From 859361a228258edf4821d9f5635825033eca78e8 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Thu, 2 Aug 2012 14:05:59 -0600 Subject: NVMe: Free cmdid on nvme_submit_bio error nvme_map_bio() is called after the cmdid is allocated, so we have to free the cmdid before returning from nvme_submit_bio() if nvme_map_bio() returned an error. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 931769e..954a610 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -237,7 +237,8 @@ static void *free_cmdid(struct nvme_queue *nvmeq, int cmdid, *fn = special_completion; return CMD_CTX_INVALID; } - *fn = info[cmdid].fn; + if (fn) + *fn = info[cmdid].fn; ctx = info[cmdid].ctx; info[cmdid].fn = special_completion; info[cmdid].ctx = CMD_CTX_COMPLETED; @@ -589,7 +590,7 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns, result = nvme_map_bio(nvmeq->q_dmadev, iod, bio, dma_dir, psegs); if (result < 0) - goto free_iod; + goto free_cmdid; length = result; cmnd->rw.command_id = cmdid; @@ -609,6 +610,8 @@ static int nvme_submit_bio_queue(struct nvme_queue *nvmeq, struct nvme_ns *ns, return 0; + free_cmdid: + free_cmdid(nvmeq, cmdid, NULL); free_iod: nvme_free_iod(nvmeq->dev, iod); nomem: -- cgit v1.1 From 3295874b6074d749516d6decd43afad7bf6e38ff Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Mon, 20 Aug 2012 14:57:49 -0600 Subject: NVMe: End queued bio requests when freeing queue If the queue has bios queued on it when it is freed, bio_endio() must be called for them first. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 954a610..af88635 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -909,6 +909,10 @@ static void nvme_free_queue(struct nvme_dev *dev, int qid) spin_lock_irq(&nvmeq->q_lock); nvme_cancel_ios(nvmeq, false); + while (bio_list_peek(&nvmeq->sq_cong)) { + struct bio *bio = bio_list_pop(&nvmeq->sq_cong); + bio_endio(bio, -EIO); + } spin_unlock_irq(&nvmeq->q_lock); irq_set_affinity_hint(vector, NULL); -- cgit v1.1 From f4f117f64baf8840d22266d518227b2a186d294b Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Fri, 21 Sep 2012 10:49:05 -0600 Subject: NVMe: Set result from user admin command The ioctl data structure includes space for the 'result' of the admin command to be returned; it just wasn't filled in. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index af88635..47c8604 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -1237,12 +1237,17 @@ static int nvme_user_admin_cmd(struct nvme_dev *dev, if (length != cmd.data_len) status = -ENOMEM; else - status = nvme_submit_admin_cmd(dev, &c, NULL); + status = nvme_submit_admin_cmd(dev, &c, &cmd.result); if (cmd.data_len) { nvme_unmap_user_pages(dev, cmd.opcode & 1, iod); nvme_free_iod(dev, iod); } + + if (!status && copy_to_user(&ucmd->result, &cmd.result, + sizeof(cmd.result))) + status = -EFAULT; + return status; } -- cgit v1.1 From 08df1e05657fc6712e520e7c09cc6c86160ceb35 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Fri, 21 Sep 2012 10:52:13 -0600 Subject: NVMe: Add result to nvme_get_features nvme_get_features() was not returning the result. Add a parameter to return the result in (similar to nvme_set_features()) and change all callers. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 47c8604..c1d5444 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -838,8 +838,8 @@ static int nvme_identify(struct nvme_dev *dev, unsigned nsid, unsigned cns, return nvme_submit_admin_cmd(dev, &c, NULL); } -static int nvme_get_features(struct nvme_dev *dev, unsigned fid, - unsigned nsid, dma_addr_t dma_addr) +static int nvme_get_features(struct nvme_dev *dev, unsigned fid, unsigned nsid, + dma_addr_t dma_addr, u32 *result) { struct nvme_command c; @@ -849,7 +849,7 @@ static int nvme_get_features(struct nvme_dev *dev, unsigned fid, c.features.prp1 = cpu_to_le64(dma_addr); c.features.fid = cpu_to_le32(fid); - return nvme_submit_admin_cmd(dev, &c, NULL); + return nvme_submit_admin_cmd(dev, &c, result); } static int nvme_set_features(struct nvme_dev *dev, unsigned fid, @@ -1535,7 +1535,7 @@ static int __devinit nvme_dev_add(struct nvme_dev *dev) continue; res = nvme_get_features(dev, NVME_FEAT_LBA_RANGE, i, - dma_addr + 4096); + dma_addr + 4096, NULL); if (res) continue; -- cgit v1.1 From 6ecec74520d8a357726e6c12f99080dbe7b347dd Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Wed, 26 Sep 2012 12:49:27 -0600 Subject: NVMe: Define SMART log This data structure is defined in the NVMe specification. It's not used by the kernel, but is available for use by userspace software. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 1 + include/linux/nvme.h | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index c1d5444..270805c 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -135,6 +135,7 @@ static inline void _nvme_check_size(void) BUILD_BUG_ON(sizeof(struct nvme_id_ctrl) != 4096); BUILD_BUG_ON(sizeof(struct nvme_id_ns) != 4096); BUILD_BUG_ON(sizeof(struct nvme_lba_range_type) != 64); + BUILD_BUG_ON(sizeof(struct nvme_smart_log) != 512); } typedef void (*nvme_completion_fn)(struct nvme_dev *, void *, diff --git a/include/linux/nvme.h b/include/linux/nvme.h index c25ccca..4fa3b0b 100644 --- a/include/linux/nvme.h +++ b/include/linux/nvme.h @@ -137,6 +137,34 @@ enum { NVME_LBAF_RP_DEGRADED = 3, }; +struct nvme_smart_log { + __u8 critical_warning; + __u8 temperature[2]; + __u8 avail_spare; + __u8 spare_thresh; + __u8 percent_used; + __u8 rsvd6[26]; + __u8 data_units_read[16]; + __u8 data_units_written[16]; + __u8 host_reads[16]; + __u8 host_writes[16]; + __u8 ctrl_busy_time[16]; + __u8 power_cycles[16]; + __u8 power_on_hours[16]; + __u8 unsafe_shutdowns[16]; + __u8 media_errors[16]; + __u8 num_err_log_entries[16]; + __u8 rsvd192[320]; +}; + +enum { + NVME_SMART_CRIT_SPARE = 1 << 0, + NVME_SMART_CRIT_TEMPERATURE = 1 << 1, + NVME_SMART_CRIT_RELIABILITY = 1 << 2, + NVME_SMART_CRIT_MEDIA = 1 << 3, + NVME_SMART_CRIT_VOLATILE_MEMORY = 1 << 4, +}; + struct nvme_lba_range_type { __u8 type; __u8 attributes; -- cgit v1.1 From 2b1960341576bf51c01b12fefeb1cc53820923e7 Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Tue, 6 Nov 2012 11:59:23 -0700 Subject: NVMe: Initialize iod nents to 0 For commands that do not map a scatter list, we need to initilaize the iod's number of sg entries (nents) to 0 and not unmap in this case. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 270805c..993c014 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -337,6 +337,7 @@ nvme_alloc_iod(unsigned nseg, unsigned nbytes, gfp_t gfp) iod->offset = offsetof(struct nvme_iod, sg[nseg]); iod->npages = -1; iod->length = nbytes; + iod->nents = 0; } return iod; @@ -377,7 +378,8 @@ static void bio_completion(struct nvme_dev *dev, void *ctx, struct bio *bio = iod->private; u16 status = le16_to_cpup(&cqe->status) >> 1; - dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents, + if (iod->nents) + dma_unmap_sg(&dev->pci_dev->dev, iod->sg, iod->nents, bio_data_dir(bio) ? DMA_TO_DEVICE : DMA_FROM_DEVICE); nvme_free_iod(dev, iod); if (status) { -- cgit v1.1 From 79461681692a337442c6a5cf44deba120a57186a Mon Sep 17 00:00:00 2001 From: Matthew Wilcox Date: Sat, 10 Nov 2012 08:54:53 -0500 Subject: MAINTAINERS: Add entry for the NVMe driver Signed-off-by: Matthew Wilcox --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 59203e7..d0bf225 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5160,6 +5160,14 @@ S: Maintained F: drivers/video/riva/ F: drivers/video/nvidia/ +NVM EXPRESS DRIVER +M: Matthew Wilcox +L: linux-nvme@lists.infradead.org +T: git git://git.infradead.org/users/willy/linux-nvme.git +S: Supported +F: drivers/block/nvme.c +F: include/linux/nvme.h + OMAP SUPPORT M: Tony Lindgren L: linux-omap@vger.kernel.org -- cgit v1.1 From 17b14ca25e9cd6c5cd7605941f6120e405a84f8b Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Mon, 19 Nov 2012 15:37:46 +0100 Subject: netfilter: ipset: Fix range bug in hash:ip,port,net Due to the missing ininitalization at adding/deleting entries, when a plain_ip,port,net element was the object, multiple elements were added/deleted instead. The bug came from the missing dangling default initialization. The error-prone default initialization is corrected in all hash:* types. --- net/netfilter/ipset/ip_set_hash_ip.c | 4 ++-- net/netfilter/ipset/ip_set_hash_ipport.c | 7 +++---- net/netfilter/ipset/ip_set_hash_ipportip.c | 7 +++---- net/netfilter/ipset/ip_set_hash_ipportnet.c | 7 +++++-- 4 files changed, 13 insertions(+), 12 deletions(-) diff --git a/net/netfilter/ipset/ip_set_hash_ip.c b/net/netfilter/ipset/ip_set_hash_ip.c index ec3dba5..5c0b785 100644 --- a/net/netfilter/ipset/ip_set_hash_ip.c +++ b/net/netfilter/ipset/ip_set_hash_ip.c @@ -173,6 +173,7 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[], return adtfn(set, &nip, timeout, flags); } + ip_to = ip; if (tb[IPSET_ATTR_IP_TO]) { ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); if (ret) @@ -185,8 +186,7 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[], if (!cidr || cidr > 32) return -IPSET_ERR_INVALID_CIDR; ip_set_mask_from_to(ip, ip_to, cidr); - } else - ip_to = ip; + } hosts = h->netmask == 32 ? 1 : 2 << (32 - h->netmask - 1); diff --git a/net/netfilter/ipset/ip_set_hash_ipport.c b/net/netfilter/ipset/ip_set_hash_ipport.c index 0171f75..6283351 100644 --- a/net/netfilter/ipset/ip_set_hash_ipport.c +++ b/net/netfilter/ipset/ip_set_hash_ipport.c @@ -162,7 +162,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[], const struct ip_set_hash *h = set->data; ipset_adtfn adtfn = set->variant->adt[adt]; struct hash_ipport4_elem data = { }; - u32 ip, ip_to = 0, p = 0, port, port_to; + u32 ip, ip_to, p = 0, port, port_to; u32 timeout = h->timeout; bool with_ports = false; int ret; @@ -210,7 +210,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[], return ip_set_eexist(ret, flags) ? 0 : ret; } - ip = ntohl(data.ip); + ip_to = ip = ntohl(data.ip); if (tb[IPSET_ATTR_IP_TO]) { ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); if (ret) @@ -223,8 +223,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[], if (!cidr || cidr > 32) return -IPSET_ERR_INVALID_CIDR; ip_set_mask_from_to(ip, ip_to, cidr); - } else - ip_to = ip; + } port_to = port = ntohs(data.port); if (with_ports && tb[IPSET_ATTR_PORT_TO]) { diff --git a/net/netfilter/ipset/ip_set_hash_ipportip.c b/net/netfilter/ipset/ip_set_hash_ipportip.c index 6344ef5..6a21271 100644 --- a/net/netfilter/ipset/ip_set_hash_ipportip.c +++ b/net/netfilter/ipset/ip_set_hash_ipportip.c @@ -166,7 +166,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[], const struct ip_set_hash *h = set->data; ipset_adtfn adtfn = set->variant->adt[adt]; struct hash_ipportip4_elem data = { }; - u32 ip, ip_to = 0, p = 0, port, port_to; + u32 ip, ip_to, p = 0, port, port_to; u32 timeout = h->timeout; bool with_ports = false; int ret; @@ -218,7 +218,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[], return ip_set_eexist(ret, flags) ? 0 : ret; } - ip = ntohl(data.ip); + ip_to = ip = ntohl(data.ip); if (tb[IPSET_ATTR_IP_TO]) { ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); if (ret) @@ -231,8 +231,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[], if (!cidr || cidr > 32) return -IPSET_ERR_INVALID_CIDR; ip_set_mask_from_to(ip, ip_to, cidr); - } else - ip_to = ip; + } port_to = port = ntohs(data.port); if (with_ports && tb[IPSET_ATTR_PORT_TO]) { diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c index cb71f9a..2d5cd4e 100644 --- a/net/netfilter/ipset/ip_set_hash_ipportnet.c +++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c @@ -215,8 +215,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[], const struct ip_set_hash *h = set->data; ipset_adtfn adtfn = set->variant->adt[adt]; struct hash_ipportnet4_elem data = { .cidr = HOST_MASK - 1 }; - u32 ip, ip_to = 0, p = 0, port, port_to; - u32 ip2_from = 0, ip2_to, ip2_last, ip2; + u32 ip, ip_to, p = 0, port, port_to; + u32 ip2_from, ip2_to, ip2_last, ip2; u32 timeout = h->timeout; bool with_ports = false; u8 cidr; @@ -286,6 +286,7 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[], return ip_set_eexist(ret, flags) ? 0 : ret; } + ip_to = ip; if (tb[IPSET_ATTR_IP_TO]) { ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to); if (ret) @@ -306,6 +307,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[], if (port > port_to) swap(port, port_to); } + + ip2_to = ip2_from; if (tb[IPSET_ATTR_IP2_TO]) { ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to); if (ret) -- cgit v1.1 From fa5199648e273a5e3e80aca41c1eb53700438dc1 Mon Sep 17 00:00:00 2001 From: Simon Que Date: Thu, 17 Jan 2013 11:18:20 -0800 Subject: eCryptfs: initialize payload_len in keystore.c This is meant to remove a compiler warning. It should not make any functional change. payload_len should be initialized when it is passed to write_tag_64_packet() as a pointer. If that call fails, this function should return early, and payload_len won't be used. Signed-off-by: Simon Que Signed-off-by: Tyler Hicks --- fs/ecryptfs/keystore.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 2333203..6154cde 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -1150,7 +1150,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok, struct ecryptfs_message *msg = NULL; char *auth_tok_sig; char *payload; - size_t payload_len; + size_t payload_len = 0; int rc; rc = ecryptfs_get_auth_tok_sig(&auth_tok_sig, auth_tok); -- cgit v1.1 From bbcb03e3ce8c76a4ecf0ea7d365f9f0e913fc329 Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Thu, 17 Jan 2013 11:36:10 -0800 Subject: eCryptfs: Fix -Wunused-but-set-variable warnings These two variables are no longer used and can be removed. Fixes warnings when building with W=1. Signed-off-by: Tyler Hicks --- fs/ecryptfs/dentry.c | 2 -- fs/ecryptfs/file.c | 2 -- 2 files changed, 4 deletions(-) diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c index 1b5d9af..bf12ba5 100644 --- a/fs/ecryptfs/dentry.c +++ b/fs/ecryptfs/dentry.c @@ -45,14 +45,12 @@ static int ecryptfs_d_revalidate(struct dentry *dentry, unsigned int flags) { struct dentry *lower_dentry; - struct vfsmount *lower_mnt; int rc = 1; if (flags & LOOKUP_RCU) return -ECHILD; lower_dentry = ecryptfs_dentry_to_lower(dentry); - lower_mnt = ecryptfs_dentry_to_lower_mnt(dentry); if (!lower_dentry->d_op || !lower_dentry->d_op->d_revalidate) goto out; rc = lower_dentry->d_op->d_revalidate(lower_dentry, flags); diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c index d45ba45..bfa52d2 100644 --- a/fs/ecryptfs/file.c +++ b/fs/ecryptfs/file.c @@ -199,7 +199,6 @@ static int ecryptfs_open(struct inode *inode, struct file *file) struct dentry *ecryptfs_dentry = file->f_path.dentry; /* Private value of ecryptfs_dentry allocated in * ecryptfs_lookup() */ - struct dentry *lower_dentry; struct ecryptfs_file_info *file_info; mount_crypt_stat = &ecryptfs_superblock_to_private( @@ -222,7 +221,6 @@ static int ecryptfs_open(struct inode *inode, struct file *file) rc = -ENOMEM; goto out; } - lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry); crypt_stat = &ecryptfs_inode_to_private(inode)->crypt_stat; mutex_lock(&crypt_stat->cs_mutex); if (!(crypt_stat->flags & ECRYPTFS_POLICY_APPLIED)) { -- cgit v1.1 From 111d61a25ec11c1837ac0fd81bf4b845d3327fb7 Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Thu, 17 Jan 2013 12:19:35 -0800 Subject: eCryptfs: Fix -Wmissing-prototypes warnings Mark two inode operation fuctions as static. Fixes warnings when building with W=1. Signed-off-by: Tyler Hicks --- fs/ecryptfs/inode.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c index cc7709e7..ddd961b 100644 --- a/fs/ecryptfs/inode.c +++ b/fs/ecryptfs/inode.c @@ -999,8 +999,8 @@ out: return rc; } -int ecryptfs_getattr_link(struct vfsmount *mnt, struct dentry *dentry, - struct kstat *stat) +static int ecryptfs_getattr_link(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) { struct ecryptfs_mount_crypt_stat *mount_crypt_stat; int rc = 0; @@ -1021,8 +1021,8 @@ int ecryptfs_getattr_link(struct vfsmount *mnt, struct dentry *dentry, return rc; } -int ecryptfs_getattr(struct vfsmount *mnt, struct dentry *dentry, - struct kstat *stat) +static int ecryptfs_getattr(struct vfsmount *mnt, struct dentry *dentry, + struct kstat *stat) { struct kstat lower_stat; int rc; -- cgit v1.1 From a07c48ad5be5cbf32a2741f10e6fbf4bbfcaa362 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 26 Jan 2013 10:48:42 +0300 Subject: eCryptfs: remove unneeded checks in virt_to_scatterlist() This is always called with a valid "sg" pointer. My static checker complains because the call to sg_init_table() dereferences "sg" before we reach the checks. Signed-off-by: Dan Carpenter Signed-off-by: Tyler Hicks --- fs/ecryptfs/crypto.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c index a7b0c2d..d5c25db 100644 --- a/fs/ecryptfs/crypto.c +++ b/fs/ecryptfs/crypto.c @@ -301,17 +301,14 @@ int virt_to_scatterlist(const void *addr, int size, struct scatterlist *sg, while (size > 0 && i < sg_size) { pg = virt_to_page(addr); offset = offset_in_page(addr); - if (sg) - sg_set_page(&sg[i], pg, 0, offset); + sg_set_page(&sg[i], pg, 0, offset); remainder_of_page = PAGE_CACHE_SIZE - offset; if (size >= remainder_of_page) { - if (sg) - sg[i].length = remainder_of_page; + sg[i].length = remainder_of_page; addr += remainder_of_page; size -= remainder_of_page; } else { - if (sg) - sg[i].length = size; + sg[i].length = size; addr += size; size = 0; } -- cgit v1.1 From 3a46741804a4226cd837d1246eed95d4161f7159 Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Tue, 12 Feb 2013 10:56:54 -0700 Subject: eCryptfs: decrypt_pki_encrypted_session_key(): remove kfree() redundant null check smatch analysis: fs/ecryptfs/keystore.c:1206 decrypt_pki_encrypted_session_key() info: redundant null check on msg calling kfree() Cc: Dustin Kirkland Cc: ecryptfs@vger.kernel.org Signed-off-by: Tim Gardner Signed-off-by: Tyler Hicks --- fs/ecryptfs/keystore.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 6154cde..5aceff2 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -1202,8 +1202,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok, crypt_stat->key_size); } out: - if (msg) - kfree(msg); + kfree(msg); return rc; } -- cgit v1.1 From 1101d58669a92ed9c9f4c7281404fb1e067a1e28 Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Tue, 12 Feb 2013 11:03:49 -0700 Subject: ecryptfs: ecryptfs_msg_ctx_alloc_to_free(): remove kfree() redundant null check smatch analysis: fs/ecryptfs/messaging.c:101 ecryptfs_msg_ctx_alloc_to_free() info: redundant null check on msg_ctx->msg calling kfree() Cc: Dustin Kirkland Cc: ecryptfs@vger.kernel.org Signed-off-by: Tim Gardner Signed-off-by: Tyler Hicks --- fs/ecryptfs/messaging.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c index 5fa2471..d5c7297 100644 --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -97,8 +97,7 @@ static void ecryptfs_msg_ctx_free_to_alloc(struct ecryptfs_msg_ctx *msg_ctx) void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx) { list_move(&(msg_ctx->node), &ecryptfs_msg_ctx_free_list); - if (msg_ctx->msg) - kfree(msg_ctx->msg); + kfree(msg_ctx->msg); msg_ctx->msg = NULL; msg_ctx->state = ECRYPTFS_MSG_CTX_STATE_FREE; } -- cgit v1.1 From 3f63c340a72f2872a9362245cb2e03f3d2bb73a6 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Tue, 19 Feb 2013 11:54:16 -0500 Subject: Bluetooth: Add support for atheros 04ca:3004 device to ath3k Yet another version of the atheros bluetooth chipset T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04ca ProdID=3004 Rev=00.01 S: Manufacturer=Atheros Communications S: Product=Bluetooth USB Host Controller S: SerialNumber=Alaska Day 2006 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb This resolves https://bugzilla.redhat.com/show_bug.cgi?id=844750 Reported-by: niktr@mail.ru Signed-off-by: Josh Boyer Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 33c9a44..b9908dd 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -76,6 +76,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x0CF3, 0x3004) }, { USB_DEVICE(0x0CF3, 0x311D) }, { USB_DEVICE(0x13d3, 0x3375) }, + { USB_DEVICE(0x04CA, 0x3004) }, { USB_DEVICE(0x04CA, 0x3005) }, { USB_DEVICE(0x04CA, 0x3006) }, { USB_DEVICE(0x04CA, 0x3008) }, @@ -108,6 +109,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 7e351e3..59cde8e 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -134,6 +134,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 }, -- cgit v1.1 From bbfa57c0f2243a7c31fd248d22e9861a2802cad5 Mon Sep 17 00:00:00 2001 From: Sebastian Riemer Date: Thu, 21 Feb 2013 13:28:09 +1100 Subject: md: protect against crash upon fsync on ro array If an fsync occurs on a read-only array, we need to send a completion for the IO and may not increment the active IO count. Otherwise, we hit a bug trace and can't stop the MD array anymore. By advice of Christoph Hellwig we return success upon a flush request but we return -EROFS for other writes. We detect flush requests by checking if the bio has zero sectors. This patch is suitable to any -stable kernel to which it applies. Cc: Christoph Hellwig Cc: Ben Hutchings Cc: NeilBrown Cc: stable@vger.kernel.org Signed-off-by: Sebastian Riemer Reported-by: Ben Hutchings Acked-by: Paul Menzel Signed-off-by: NeilBrown --- drivers/md/md.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/md/md.c b/drivers/md/md.c index 3db3d1b..1e634a6 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -307,6 +307,10 @@ static void md_make_request(struct request_queue *q, struct bio *bio) bio_io_error(bio); return; } + if (mddev->ro == 1 && unlikely(rw == WRITE)) { + bio_endio(bio, bio_sectors(bio) == 0 ? 0 : -EROFS); + return; + } smp_rmb(); /* Ensure implications of 'active' are visible */ rcu_read_lock(); if (mddev->suspended) { -- cgit v1.1 From cf1c4a094f46ace5bf00078e2db73491ddf018fe Mon Sep 17 00:00:00 2001 From: Josh Hunt Date: Tue, 19 Feb 2013 11:35:59 -0800 Subject: netfilter: ipset: timeout values corrupted on set resize If a resize is triggered on a set with timeouts enabled, the timeout values will get corrupted when copying them to the new set. This occured b/c the wrong timeout value is supplied to type_pf_elem_tadd(). This also adds simple debug statement similar to the one in type_pf_resize(). Signed-off-by: Josh Hunt Signed-off-by: Jozsef Kadlecsik --- include/linux/netfilter/ipset/ip_set_ahash.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/netfilter/ipset/ip_set_ahash.h b/include/linux/netfilter/ipset/ip_set_ahash.h index ef9acd3..01d25e6 100644 --- a/include/linux/netfilter/ipset/ip_set_ahash.h +++ b/include/linux/netfilter/ipset/ip_set_ahash.h @@ -854,6 +854,8 @@ type_pf_tresize(struct ip_set *set, bool retried) retry: ret = 0; htable_bits++; + pr_debug("attempt to resize set %s from %u to %u, t %p\n", + set->name, orig->htable_bits, htable_bits, orig); if (!htable_bits) { /* In case we have plenty of memory :-) */ pr_warning("Cannot increase the hashsize of set %s further\n", @@ -873,7 +875,7 @@ retry: data = ahash_tdata(n, j); m = hbucket(t, HKEY(data, h->initval, htable_bits)); ret = type_pf_elem_tadd(m, data, AHASH_MAX(h), 0, - type_pf_data_timeout(data)); + ip_set_timeout_get(type_pf_data_timeout(data))); if (ret < 0) { read_unlock_bh(&set->lock); ahash_destroy(t); -- cgit v1.1 From dd82088dab3646ed28e4aa43d1a5b5d5ffc2afba Mon Sep 17 00:00:00 2001 From: Jozsef Kadlecsik Date: Thu, 21 Feb 2013 11:12:40 +0100 Subject: netfilter: ipset: "Directory not empty" error message When an entry flagged with "nomatch" was tested by ipset, it returned the error message "Kernel error received: Directory not empty" instead of " is NOT in set " (reported by John Brendler). The internal error code was not properly transformed before returning to userspace, fixed. Signed-off-by: Jozsef Kadlecsik --- net/netfilter/ipset/ip_set_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c index 6d6d8f2..38ca630 100644 --- a/net/netfilter/ipset/ip_set_core.c +++ b/net/netfilter/ipset/ip_set_core.c @@ -1470,7 +1470,8 @@ ip_set_utest(struct sock *ctnl, struct sk_buff *skb, if (ret == -EAGAIN) ret = 1; - return ret < 0 ? ret : ret > 0 ? 0 : -IPSET_ERR_EXIST; + return (ret < 0 && ret != -ENOTEMPTY) ? ret : + ret > 0 ? 0 : -IPSET_ERR_EXIST; } /* Get headed data of a set */ -- cgit v1.1 From e5ab012c3271990e8457055c25cafddc1ae8aa6b Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Wed, 20 Feb 2013 16:15:36 +0100 Subject: nohz: Make tick_nohz_irq_exit() irq safe As it stands, irq_exit() may or may not be called with irqs disabled, depending on __ARCH_IRQ_EXIT_IRQS_DISABLED that the arch can define. It makes tick_nohz_irq_exit() unsafe. For example two interrupts can race in tick_nohz_stop_sched_tick(): the inner most one computes the expiring time on top of the timer list, then it's interrupted right before reprogramming the clock. The new interrupt enqueues a new timer list timer, it reprogram the clock to take it into account and it exits. The CPUs resumes the inner most interrupt and performs the clock reprogramming without considering the new timer list timer. This regression has been introduced by: 280f06774afedf849f0b34248ed6aff57d0f6908 ("nohz: Separate out irq exit and idle loop dyntick logic") Let's fix it right now with the appropriate protections. A saner long term solution will be to remove __ARCH_IRQ_EXIT_IRQS_DISABLED and mandate that irq_exit() is called with interrupts disabled. Signed-off-by: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Linus Torvalds Cc: #v3.2+ Link: http://lkml.kernel.org/r/1361373336-11337-1-git-send-email-fweisbec@gmail.com Signed-off-by: Thomas Gleixner --- kernel/time/tick-sched.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 314b9ee..520592a 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -565,14 +565,19 @@ void tick_nohz_idle_enter(void) */ void tick_nohz_irq_exit(void) { + unsigned long flags; struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched); if (!ts->inidle) return; - /* Cancel the timer because CPU already waken up from the C-states*/ + local_irq_save(flags); + + /* Cancel the timer because CPU already waken up from the C-states */ menu_hrtimer_cancel(); __tick_nohz_idle_enter(ts); + + local_irq_restore(flags); } /** -- cgit v1.1 From 74eed0163d0def3fce27228d9ccf3d36e207b286 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 20 Feb 2013 22:00:48 +0100 Subject: irq: Ensure irq_exit() code runs with interrupts disabled We had already a few problems with code called from irq_exit() when interrupted from a nesting interrupt. This can happen on architectures which do not define __ARCH_IRQ_EXIT_IRQS_DISABLED. __ARCH_IRQ_EXIT_IRQS_DISABLED should go away and we want to make it mandatory to call irq_exit() with interrupts disabled. As a temporary protection disable interrupts for those architectures which do not define __ARCH_IRQ_EXIT_IRQS_DISABLED and add a WARN_ONCE when an architecture which defines __ARCH_IRQ_EXIT_IRQS_DISABLED calls irq_exit() with interrupts enabled. Signed-off-by: Thomas Gleixner Cc: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Linus Torvalds Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1302202155320.22263@ionos --- kernel/softirq.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/kernel/softirq.c b/kernel/softirq.c index f5cc25f..f2a9346 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -341,6 +341,14 @@ static inline void invoke_softirq(void) */ void irq_exit(void) { +#ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED + unsigned long flags; + + local_irq_save(flags); +#else + WARN_ON_ONCE(!irqs_disabled()); +#endif + account_irq_exit_time(current); trace_hardirq_exit(); sub_preempt_count(IRQ_EXIT_OFFSET); @@ -354,6 +362,9 @@ void irq_exit(void) #endif rcu_irq_exit(); sched_preempt_enable_no_resched(); +#ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED + local_irq_restore(flags); +#endif } /* -- cgit v1.1 From facd8b80c67a3cf64a467c4a2ac5fb31f2e6745b Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 21 Feb 2013 18:17:42 +0100 Subject: irq: Sanitize invoke_softirq With the irq protection in irq_exit, we can remove the #ifdeffery and the bh_disable/enable dance in invoke_softirq() Signed-off-by: Thomas Gleixner Cc: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Linus Torvalds Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1302202155320.22263@ionos --- kernel/softirq.c | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index f2a9346..24a921b 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -322,18 +322,10 @@ void irq_enter(void) static inline void invoke_softirq(void) { - if (!force_irqthreads) { -#ifdef __ARCH_IRQ_EXIT_IRQS_DISABLED + if (!force_irqthreads) __do_softirq(); -#else - do_softirq(); -#endif - } else { - __local_bh_disable((unsigned long)__builtin_return_address(0), - SOFTIRQ_OFFSET); + else wakeup_softirqd(); - __local_bh_enable(SOFTIRQ_OFFSET); - } } /* -- cgit v1.1 From af7bdbafe3812af406ce07631effd2b96aae2dba Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 21 Feb 2013 18:21:30 +0100 Subject: Revert "nohz: Make tick_nohz_irq_exit() irq safe" This reverts commit 351429b2e62b6545bb10c756686393f29ba268a1. The extra local_irq_save() is not longer needed as the call site now always calls with interrupts disabled. Signed-off-by: Thomas Gleixner Cc: Frederic Weisbecker Cc: Peter Zijlstra Cc: Ingo Molnar Cc: Paul E. McKenney Cc: Linus Torvalds --- kernel/time/tick-sched.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 520592a..314b9ee 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -565,19 +565,14 @@ void tick_nohz_idle_enter(void) */ void tick_nohz_irq_exit(void) { - unsigned long flags; struct tick_sched *ts = &__get_cpu_var(tick_cpu_sched); if (!ts->inidle) return; - local_irq_save(flags); - - /* Cancel the timer because CPU already waken up from the C-states */ + /* Cancel the timer because CPU already waken up from the C-states*/ menu_hrtimer_cancel(); __tick_nohz_idle_enter(ts); - - local_irq_restore(flags); } /** -- cgit v1.1 From 4d4c4e24cf48400a24d33feffc7cca4f4e8cabe1 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 22 Feb 2013 00:05:07 +0100 Subject: irq: Remove IRQ_EXIT_OFFSET workaround The IRQ_EXIT_OFFSET trick was used to make sure the irq doesn't get preempted after we substract the HARDIRQ_OFFSET until we are entirely done with any code in irq_exit(). This workaround was necessary because some archs may call irq_exit() with irqs enabled and there is still some code in the end of this function that is not covered by the HARDIRQ_OFFSET but want to stay non-preemptible. Now that irq are always disabled in irq_exit(), the whole code is guaranteed not to be preempted. We can thus remove this hack. Signed-off-by: Frederic Weisbecker Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Paul E. McKenney --- include/linux/hardirq.h | 2 -- kernel/softirq.c | 3 +-- 2 files changed, 1 insertion(+), 4 deletions(-) diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h index 29eb805..c1d6555 100644 --- a/include/linux/hardirq.h +++ b/include/linux/hardirq.h @@ -118,10 +118,8 @@ #ifdef CONFIG_PREEMPT_COUNT # define preemptible() (preempt_count() == 0 && !irqs_disabled()) -# define IRQ_EXIT_OFFSET (HARDIRQ_OFFSET-1) #else # define preemptible() 0 -# define IRQ_EXIT_OFFSET HARDIRQ_OFFSET #endif #if defined(CONFIG_SMP) || defined(CONFIG_GENERIC_HARDIRQS) diff --git a/kernel/softirq.c b/kernel/softirq.c index 24a921b..f42ff97 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -343,7 +343,7 @@ void irq_exit(void) account_irq_exit_time(current); trace_hardirq_exit(); - sub_preempt_count(IRQ_EXIT_OFFSET); + sub_preempt_count(HARDIRQ_OFFSET); if (!in_interrupt() && local_softirq_pending()) invoke_softirq(); @@ -353,7 +353,6 @@ void irq_exit(void) tick_nohz_irq_exit(); #endif rcu_irq_exit(); - sched_preempt_enable_no_resched(); #ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED local_irq_restore(flags); #endif -- cgit v1.1 From 81bb5d31fbf3893a8e041c649dea704dd11d5272 Mon Sep 17 00:00:00 2001 From: Kamal Mostafa Date: Thu, 21 Feb 2013 11:55:05 -0800 Subject: Input: cypress_ps2 - fix trackpadi found in Dell XPS12 Avoid firmware glitch in Cypress PS/2 Trackpad firmware version 11 (as observed in Dell XPS12) which prevents driver from recognizing the trackpad. BugLink: http://launchpad.net/bugs/1103594 Signed-off-by: Kamal Mostafa Cc: Dudley Du Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/cypress_ps2.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c index 1673dc6..f51765f 100644 --- a/drivers/input/mouse/cypress_ps2.c +++ b/drivers/input/mouse/cypress_ps2.c @@ -236,6 +236,13 @@ static int cypress_read_fw_version(struct psmouse *psmouse) cytp->fw_version = param[2] & FW_VERSION_MASX; cytp->tp_metrics_supported = (param[2] & TP_METRICS_MASK) ? 1 : 0; + /* + * Trackpad fw_version 11 (in Dell XPS12) yields a bogus response to + * CYTP_CMD_READ_TP_METRICS so do not try to use it. LP: #1103594. + */ + if (cytp->fw_version >= 11) + cytp->tp_metrics_supported = 0; + psmouse_dbg(psmouse, "cytp->fw_version = %d\n", cytp->fw_version); psmouse_dbg(psmouse, "cytp->tp_metrics_supported = %d\n", cytp->tp_metrics_supported); @@ -258,6 +265,9 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse) cytp->tp_res_x = cytp->tp_max_abs_x / cytp->tp_width; cytp->tp_res_y = cytp->tp_max_abs_y / cytp->tp_high; + if (!cytp->tp_metrics_supported) + return 0; + memset(param, 0, sizeof(param)); if (cypress_send_ext_cmd(psmouse, CYTP_CMD_READ_TP_METRICS, param) == 0) { /* Update trackpad parameters. */ @@ -315,18 +325,15 @@ static int cypress_read_tp_metrics(struct psmouse *psmouse) static int cypress_query_hardware(struct psmouse *psmouse) { - struct cytp_data *cytp = psmouse->private; int ret; ret = cypress_read_fw_version(psmouse); if (ret) return ret; - if (cytp->tp_metrics_supported) { - ret = cypress_read_tp_metrics(psmouse); - if (ret) - return ret; - } + ret = cypress_read_tp_metrics(psmouse); + if (ret) + return ret; return 0; } -- cgit v1.1 From d18e53fce2f6e42bfb8ac157547dd3f804385749 Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Thu, 21 Feb 2013 22:58:20 -0800 Subject: Input: ALPS - remove unused argument to alps_enter_command_mode() Now that alps_identify() explicitly issues an EC report using alps_rpt_cmd(), we no longer need to look at the magic numbers returned by alps_enter_command_mode(). Signed-off-by: Kevin Cernekee Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 7b99fc7..9c97531 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -994,8 +994,7 @@ static int alps_rpt_cmd(struct psmouse *psmouse, int init_command, return 0; } -static int alps_enter_command_mode(struct psmouse *psmouse, - unsigned char *resp) +static int alps_enter_command_mode(struct psmouse *psmouse) { unsigned char param[4]; @@ -1009,9 +1008,6 @@ static int alps_enter_command_mode(struct psmouse *psmouse, "unknown response while entering command mode\n"); return -1; } - - if (resp) - *resp = param[2]; return 0; } @@ -1176,7 +1172,7 @@ static int alps_passthrough_mode_v3(struct psmouse *psmouse, { int reg_val, ret = -1; - if (alps_enter_command_mode(psmouse, NULL)) + if (alps_enter_command_mode(psmouse)) return -1; reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x0008); @@ -1216,7 +1212,7 @@ static int alps_probe_trackstick_v3(struct psmouse *psmouse, int reg_base) { int ret = -EIO, reg_val; - if (alps_enter_command_mode(psmouse, NULL)) + if (alps_enter_command_mode(psmouse)) goto error; reg_val = alps_command_mode_read_reg(psmouse, reg_base + 0x08); @@ -1279,7 +1275,7 @@ static int alps_setup_trackstick_v3(struct psmouse *psmouse, int reg_base) * supported by this driver. If bit 1 isn't set the packet * format is different. */ - if (alps_enter_command_mode(psmouse, NULL) || + if (alps_enter_command_mode(psmouse) || alps_command_mode_write_reg(psmouse, reg_base + 0x08, 0x82) || alps_exit_command_mode(psmouse)) @@ -1306,7 +1302,7 @@ static int alps_hw_init_v3(struct psmouse *psmouse) alps_setup_trackstick_v3(psmouse, ALPS_REG_BASE_PINNACLE) == -EIO) goto error; - if (alps_enter_command_mode(psmouse, NULL) || + if (alps_enter_command_mode(psmouse) || alps_absolute_mode_v3(psmouse)) { psmouse_err(psmouse, "Failed to enter absolute mode\n"); goto error; @@ -1381,7 +1377,7 @@ static int alps_hw_init_rushmore_v3(struct psmouse *psmouse) priv->flags &= ~ALPS_DUALPOINT; } - if (alps_enter_command_mode(psmouse, NULL) || + if (alps_enter_command_mode(psmouse) || alps_command_mode_read_reg(psmouse, 0xc2d9) == -1 || alps_command_mode_write_reg(psmouse, 0xc2cb, 0x00)) goto error; @@ -1431,7 +1427,7 @@ static int alps_hw_init_v4(struct psmouse *psmouse) struct ps2dev *ps2dev = &psmouse->ps2dev; unsigned char param[4]; - if (alps_enter_command_mode(psmouse, NULL)) + if (alps_enter_command_mode(psmouse)) goto error; if (alps_absolute_mode_v4(psmouse)) { -- cgit v1.1 From 75af9e56c1e309a4132d15120d7061656609b84e Mon Sep 17 00:00:00 2001 From: Dave Turvene Date: Thu, 21 Feb 2013 22:58:28 -0800 Subject: Input: ALPS - add "Dolphin V1" touchpad support These touchpads use a different protocol; they have been seen on Dell N5110, Dell 17R SE, and others. The official ALPS driver identifies them by looking for an exact match on the E7 report: 73 03 50. Dolphin V1 returns an EC report of 73 01 xx (02 and 0d have been seen); Dolphin V2 returns an EC report of 73 02 xx (02 has been seen). Dolphin V2 probably needs a different initialization sequence and/or report parser, so it is left for a future commit. Signed-off-by: Dave Turvene Signed-off-by: Kevin Cernekee Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/alps.c | 67 ++++++++++++++++++++++++++++++++++++++++++++-- drivers/input/mouse/alps.h | 1 + 2 files changed, 66 insertions(+), 2 deletions(-) diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c index 9c97531..0238e0e 100644 --- a/drivers/input/mouse/alps.c +++ b/drivers/input/mouse/alps.c @@ -490,6 +490,29 @@ static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p) f->y_map |= (p[5] & 0x20) << 6; } +static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p) +{ + f->first_mp = !!(p[0] & 0x02); + f->is_mp = !!(p[0] & 0x20); + + f->fingers = ((p[0] & 0x6) >> 1 | + (p[0] & 0x10) >> 2); + f->x_map = ((p[2] & 0x60) >> 5) | + ((p[4] & 0x7f) << 2) | + ((p[5] & 0x7f) << 9) | + ((p[3] & 0x07) << 16) | + ((p[3] & 0x70) << 15) | + ((p[0] & 0x01) << 22); + f->y_map = (p[1] & 0x7f) | + ((p[2] & 0x1f) << 7); + + f->x = ((p[1] & 0x7f) | ((p[4] & 0x0f) << 7)); + f->y = ((p[2] & 0x7f) | ((p[4] & 0xf0) << 3)); + f->z = (p[0] & 4) ? 0 : p[5] & 0x7f; + + alps_decode_buttons_v3(f, p); +} + static void alps_process_touchpad_packet_v3(struct psmouse *psmouse) { struct alps_data *priv = psmouse->private; @@ -874,7 +897,8 @@ static psmouse_ret_t alps_process_byte(struct psmouse *psmouse) } /* Bytes 2 - pktsize should have 0 in the highest bit */ - if (psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && + if (priv->proto_version != ALPS_PROTO_V5 && + psmouse->pktcnt >= 2 && psmouse->pktcnt <= psmouse->pktsize && (psmouse->packet[psmouse->pktcnt - 1] & 0x80)) { psmouse_dbg(psmouse, "refusing packet[%i] = %x\n", psmouse->pktcnt - 1, @@ -1003,7 +1027,8 @@ static int alps_enter_command_mode(struct psmouse *psmouse) return -1; } - if (param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) { + if ((param[0] != 0x88 || (param[1] != 0x07 && param[1] != 0x08)) && + param[0] != 0x73) { psmouse_dbg(psmouse, "unknown response while entering command mode\n"); return -1; @@ -1495,6 +1520,23 @@ error: return -1; } +static int alps_hw_init_dolphin_v1(struct psmouse *psmouse) +{ + struct ps2dev *ps2dev = &psmouse->ps2dev; + unsigned char param[2]; + + /* This is dolphin "v1" as empirically defined by florin9doi */ + param[0] = 0x64; + param[1] = 0x28; + + if (ps2_command(ps2dev, NULL, PSMOUSE_CMD_SETSTREAM) || + ps2_command(ps2dev, ¶m[0], PSMOUSE_CMD_SETRATE) || + ps2_command(ps2dev, ¶m[1], PSMOUSE_CMD_SETRATE)) + return -1; + + return 0; +} + static void alps_set_defaults(struct alps_data *priv) { priv->byte0 = 0x8f; @@ -1528,6 +1570,21 @@ static void alps_set_defaults(struct alps_data *priv) priv->nibble_commands = alps_v4_nibble_commands; priv->addr_command = PSMOUSE_CMD_DISABLE; break; + case ALPS_PROTO_V5: + priv->hw_init = alps_hw_init_dolphin_v1; + priv->process_packet = alps_process_packet_v3; + priv->decode_fields = alps_decode_dolphin; + priv->set_abs_params = alps_set_abs_params_mt; + priv->nibble_commands = alps_v3_nibble_commands; + priv->addr_command = PSMOUSE_CMD_RESET_WRAP; + priv->byte0 = 0xc8; + priv->mask0 = 0xc8; + priv->flags = 0; + priv->x_max = 1360; + priv->y_max = 660; + priv->x_bits = 23; + priv->y_bits = 12; + break; } } @@ -1588,6 +1645,12 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv) if (alps_match_table(psmouse, priv, e7, ec) == 0) { return 0; + } else if (e7[0] == 0x73 && e7[1] == 0x03 && e7[2] == 0x50 && + ec[0] == 0x73 && ec[1] == 0x01) { + priv->proto_version = ALPS_PROTO_V5; + alps_set_defaults(priv); + + return 0; } else if (ec[0] == 0x88 && ec[1] == 0x08) { priv->proto_version = ALPS_PROTO_V3; alps_set_defaults(priv); diff --git a/drivers/input/mouse/alps.h b/drivers/input/mouse/alps.h index 9704805..eee5985 100644 --- a/drivers/input/mouse/alps.h +++ b/drivers/input/mouse/alps.h @@ -16,6 +16,7 @@ #define ALPS_PROTO_V2 2 #define ALPS_PROTO_V3 3 #define ALPS_PROTO_V4 4 +#define ALPS_PROTO_V5 5 /** * struct alps_model_info - touchpad ID table -- cgit v1.1 From 734907e82d21a75a514b80164185427a832a00c0 Mon Sep 17 00:00:00 2001 From: Rich Lane Date: Fri, 8 Feb 2013 09:30:23 -0800 Subject: openvswitch: Fix ovs_vport_cmd_del return value on success If the pointer does not represent an error then the PTR_ERR macro may still return a nonzero value. The fix is the same as in ovs_vport_cmd_set. Signed-off-by: Rich Lane Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index f996db3..5e275b9 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -1772,6 +1772,7 @@ static int ovs_vport_cmd_del(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(reply)) goto exit_unlock; + err = 0; ovs_dp_detach_port(vport); genl_notify(reply, genl_info_net(info), info->snd_portid, -- cgit v1.1 From cb7c5bdffb727a3d4dea5247d9d1d52238b01d90 Mon Sep 17 00:00:00 2001 From: Rich Lane Date: Fri, 8 Feb 2013 13:18:01 -0800 Subject: openvswitch: Fix ovs_vport_cmd_new return value on success If the pointer does not represent an error then the PTR_ERR macro may still return a nonzero value. Signed-off-by: Rich Lane Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 5e275b9..a2cd3e6 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -1691,6 +1691,7 @@ static int ovs_vport_cmd_new(struct sk_buff *skb, struct genl_info *info) if (IS_ERR(vport)) goto exit_unlock; + err = 0; reply = ovs_vport_cmd_build_info(vport, info->snd_portid, info->snd_seq, OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) { -- cgit v1.1 From a15ff76c955d17cf58313097e4a24124da022b1d Mon Sep 17 00:00:00 2001 From: Rich Lane Date: Fri, 15 Feb 2013 11:07:43 -0800 Subject: openvswitch: Call genlmsg_end in queue_userspace_packet Without genlmsg_end the upcall message ends (according to nlmsg_len) after the struct ovs_header. Signed-off-by: Rich Lane Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index a2cd3e6..cae1062 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -395,6 +395,7 @@ static int queue_userspace_packet(struct net *net, int dp_ifindex, skb_copy_and_csum_dev(skb, nla_data(nla)); + genlmsg_end(user_skb, upcall); err = genlmsg_unicast(net, user_skb, upcall_info->portid); out: -- cgit v1.1 From 17b682a04841233f827073b327c6533e478dfcd4 Mon Sep 17 00:00:00 2001 From: Rich Lane Date: Tue, 19 Feb 2013 11:10:30 -0800 Subject: openvswitch: Fix parsing invalid LLC/SNAP ethertypes Before this patch, if an LLC/SNAP packet with OUI 00:00:00 had an ethertype less than 1536 the flow key given to userspace in the upcall would contain the invalid ethertype (for example, 3). If userspace attempted to insert a kernel flow for this key it would be rejected by ovs_flow_from_nlattrs. This patch allows OVS to pass the OFTest pktact.DirectBadLlcPackets. Signed-off-by: Rich Lane Signed-off-by: Jesse Gross --- net/openvswitch/flow.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index c3294ce..0c98d40 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -484,7 +484,11 @@ static __be16 parse_ethertype(struct sk_buff *skb) return htons(ETH_P_802_2); __skb_pull(skb, sizeof(struct llc_snap_hdr)); - return llc->ethertype; + + if (ntohs(llc->ethertype) >= 1536) + return llc->ethertype; + + return htons(ETH_P_802_2); } static int parse_icmpv6(struct sk_buff *skb, struct sw_flow_key *key, -- cgit v1.1 From 7b024082b2b279af58e24ebd46e81777723d58da Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Fri, 22 Feb 2013 17:32:26 +0800 Subject: openvswitch: fix the calculation of checksum for vlan header In vlan_insert_tag(), we insert a 4-byte VLAN header _after_ mac header: memmove(skb->data, skb->data + VLAN_HLEN, 2 * ETH_ALEN); ... veth->h_vlan_proto = htons(ETH_P_8021Q); ... veth->h_vlan_TCI = htons(vlan_tci); so after it, we should recompute the checksum to include these 4 bytes. skb->data still points to the mac header, therefore VLAN header is at (2 * ETH_ALEN = 12) bytes after it, not (ETH_HLEN = 14) bytes. This can also be observed via tcpdump: 0x0000: ffff ffff ffff 5254 005d 6f6e 8100 000a 0x0010: 0806 0001 0800 0604 0001 5254 005d 6f6e 0x0020: c0a8 026e 0000 0000 0000 c0a8 0282 Similar for __pop_vlan_tci(), the vlan header we remove is the one overwritten in: memmove(skb->data + VLAN_HLEN, skb->data, 2 * ETH_ALEN); Therefore the VLAN_HLEN = 4 bytes after 2 * ETH_ALEN is the part we want to sub from checksum. Cc: David S. Miller Cc: Jesse Gross Signed-off-by: Cong Wang Signed-off-by: Jesse Gross --- net/openvswitch/actions.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c index ac2defe..d4d5363 100644 --- a/net/openvswitch/actions.c +++ b/net/openvswitch/actions.c @@ -58,7 +58,7 @@ static int __pop_vlan_tci(struct sk_buff *skb, __be16 *current_tci) if (skb->ip_summed == CHECKSUM_COMPLETE) skb->csum = csum_sub(skb->csum, csum_partial(skb->data - + ETH_HLEN, VLAN_HLEN, 0)); + + (2 * ETH_ALEN), VLAN_HLEN, 0)); vhdr = (struct vlan_hdr *)(skb->data + ETH_HLEN); *current_tci = vhdr->h_vlan_TCI; @@ -115,7 +115,7 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla if (skb->ip_summed == CHECKSUM_COMPLETE) skb->csum = csum_add(skb->csum, csum_partial(skb->data - + ETH_HLEN, VLAN_HLEN, 0)); + + (2 * ETH_ALEN), VLAN_HLEN, 0)); } __vlan_hwaccel_put_tag(skb, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT); -- cgit v1.1 From d176ca2a48ff2b5d7becfacdcbd1d72c73bd22d1 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Fri, 22 Feb 2013 19:41:26 +0800 Subject: openvswitch: remove some useless comments These comments are useless in upstream kernel. Cc: David S. Miller Cc: Jesse Gross Signed-off-by: Cong Wang Signed-off-by: Jesse Gross --- net/openvswitch/vport-netdev.c | 3 +-- net/openvswitch/vport.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c index 670cbc3..2130d61 100644 --- a/net/openvswitch/vport-netdev.c +++ b/net/openvswitch/vport-netdev.c @@ -43,8 +43,7 @@ static void netdev_port_receive(struct vport *vport, struct sk_buff *skb) /* Make our own copy of the packet. Otherwise we will mangle the * packet for anyone who came before us (e.g. tcpdump via AF_PACKET). - * (No one comes after us, since we tell handle_bridge() that we took - * the packet.) */ + */ skb = skb_share_check(skb, GFP_ATOMIC); if (unlikely(!skb)) return; diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c index 70af0be..6255e48 100644 --- a/net/openvswitch/vport.c +++ b/net/openvswitch/vport.c @@ -326,8 +326,7 @@ int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb) * @skb: skb that was received * * Must be called with rcu_read_lock. The packet cannot be shared and - * skb->data should point to the Ethernet header. The caller must have already - * called compute_ip_summed() to initialize the checksumming fields. + * skb->data should point to the Ethernet header. */ void ovs_vport_receive(struct vport *vport, struct sk_buff *skb) { -- cgit v1.1 From 171fb58da00277b099d5a1c5e114fa57b77c4f90 Mon Sep 17 00:00:00 2001 From: dave turvene Date: Sat, 23 Feb 2013 20:06:34 -0800 Subject: Input: ALPS - update documentation for recent touchpad driver mods Updated documentation for the new ALPS touchpad support submitted in two patchsets by Kevin Cernekee. My understanding is the most recent patchset '"Dolphin V2" touchpad support' may still need some work but Future work on the ALPS driver should not impact these documentation changes. See https://bugs.launchpad.net/ubuntu/+source/linux/+bug/606238 Signed-off-by: David Turvene Acked-by: Kevin Cernekee Signed-off-by: Dmitry Torokhov --- Documentation/input/alps.txt | 67 +++++++++++++++++++++++++++++++++++++++----- 1 file changed, 60 insertions(+), 7 deletions(-) diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt index ae8ba9a..9b1084c 100644 --- a/Documentation/input/alps.txt +++ b/Documentation/input/alps.txt @@ -3,10 +3,26 @@ ALPS Touchpad Protocol Introduction ------------ - -Currently the ALPS touchpad driver supports four protocol versions in use by -ALPS touchpads, called versions 1, 2, 3, and 4. Information about the various -protocol versions is contained in the following sections. +Currently the ALPS touchpad driver supports five protocol versions in use by +ALPS touchpads, called versions 1, 2, 3, 4 and 5. + +Since roughly mid-2010 several new ALPS touchpads have been released and +integrated into a variety of laptops and netbooks. These new touchpads +have enough behavior differences that the alps_model_data definition +table, describing the properties of the different versions, is no longer +adequate. The design choices were to re-define the alps_model_data +table, with the risk of regression testing existing devices, or isolate +the new devices outside of the alps_model_data table. The latter design +choice was made. The new touchpad signatures are named: "Rushmore", +"Pinnacle", and "Dolphin", which you will see in the alps.c code. +For the purposes of this document, this group of ALPS touchpads will +generically be called "new ALPS touchpads". + +We experimented with probing the ACPI interface _HID (Hardware ID)/_CID +(Compatibility ID) definition as a way to uniquely identify the +different ALPS variants but there did not appear to be a 1:1 mapping. +In fact, it appeared to be an m:n mapping between the _HID and actual +hardware type. Detection --------- @@ -20,9 +36,13 @@ If the E6 report is successful, the touchpad model is identified using the "E7 report" sequence: E8-E7-E7-E7-E9. The response is the model signature and is matched against known models in the alps_model_data_array. -With protocol versions 3 and 4, the E7 report model signature is always -73-02-64. To differentiate between these versions, the response from the -"Enter Command Mode" sequence must be inspected as described below. +For older touchpads supporting protocol versions 3 and 4, the E7 report +model signature is always 73-02-64. To differentiate between these +versions, the response from the "Enter Command Mode" sequence must be +inspected as described below. + +The new ALPS touchpads have an E7 signature of 73-03-50 or 73-03-0A but +seem to be better differentiated by the EC Command Mode response. Command Mode ------------ @@ -47,6 +67,14 @@ address of the register being read, and the third contains the value of the register. Registers are written by writing the value one nibble at a time using the same encoding used for addresses. +For the new ALPS touchpads, the EC command is used to enter command +mode. The response in the new ALPS touchpads is significantly different, +and more important in determining the behavior. This code has been +separated from the original alps_model_data table and put in the +alps_identify function. For example, there seem to be two hardware init +sequences for the "Dolphin" touchpads as determined by the second byte +of the EC response. + Packet Format ------------- @@ -187,3 +215,28 @@ There are several things worth noting here. well. So far no v4 devices with tracksticks have been encountered. + +ALPS Absolute Mode - Protocol Version 5 +--------------------------------------- +This is basically Protocol Version 3 but with different logic for packet +decode. It uses the same alps_process_touchpad_packet_v3 call with a +specialized decode_fields function pointer to correctly interpret the +packets. This appears to only be used by the Dolphin devices. + +For single-touch, the 6-byte packet format is: + + byte 0: 1 1 0 0 1 0 0 0 + byte 1: 0 x6 x5 x4 x3 x2 x1 x0 + byte 2: 0 y6 y5 y4 y3 y2 y1 y0 + byte 3: 0 M R L 1 m r l + byte 4: y10 y9 y8 y7 x10 x9 x8 x7 + byte 5: 0 z6 z5 z4 z3 z2 z1 z0 + +For mt, the format is: + + byte 0: 1 1 1 n3 1 n2 n1 x24 + byte 1: 1 y7 y6 y5 y4 y3 y2 y1 + byte 2: ? x2 x1 y12 y11 y10 y9 y8 + byte 3: 0 x23 x22 x21 x20 x19 x18 x17 + byte 4: 0 x9 x8 x7 x6 x5 x4 x3 + byte 5: 0 x16 x15 x14 x13 x12 x11 x10 -- cgit v1.1 From 1b91731d23a3dd8e8d7e3ee21b8c6d6d4cde62c1 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 22 Feb 2013 12:55:01 +0100 Subject: mac80211: fix tim_lock locking The ieee80211_beacon_add_tim() function might be called by drivers with BHs enabled, which causes a potential deadlock if TX happens at the same time and attempts to lock the tim_lock as well. Use spin_lock_bh to fix it. Signed-off-by: Johannes Berg --- net/mac80211/tx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 5b9602b..5800c7a 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2360,9 +2360,9 @@ static int ieee80211_beacon_add_tim(struct ieee80211_sub_if_data *sdata, if (local->tim_in_locked_section) { __ieee80211_beacon_add_tim(sdata, ps, skb); } else { - spin_lock(&local->tim_lock); + spin_lock_bh(&local->tim_lock); __ieee80211_beacon_add_tim(sdata, ps, skb); - spin_unlock(&local->tim_lock); + spin_unlock_bh(&local->tim_lock); } return 0; -- cgit v1.1 From 1c33a0594583059afc983b5ad3c3352849cd5205 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 18 Feb 2013 23:44:38 +0100 Subject: nl80211: remove radar information The wiphy information is getting very close to being too much for a typical netlink dump message and adding the radar attributes to channels and interface combinations can push it over the limit, which means userspace gets no information whatsoever. Therefore, remove these again for now, no driver actually supports radar detection anyway and a modified userspace is required as well. We're working on a solution that will allow userspace to request splitting the information across multiple netlink messages, which will allow us to add this back. Cc: Simon Wunderlich Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 35545cc..cf4c794 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -554,16 +554,9 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, if ((chan->flags & IEEE80211_CHAN_NO_IBSS) && nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IBSS)) goto nla_put_failure; - if (chan->flags & IEEE80211_CHAN_RADAR) { - u32 time = elapsed_jiffies_msecs(chan->dfs_state_entered); - if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) - goto nla_put_failure; - if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, - chan->dfs_state)) - goto nla_put_failure; - if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, time)) - goto nla_put_failure; - } + if ((chan->flags & IEEE80211_CHAN_RADAR) && + nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) + goto nla_put_failure; if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) goto nla_put_failure; @@ -900,9 +893,6 @@ static int nl80211_put_iface_combinations(struct wiphy *wiphy, nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, c->max_interfaces)) goto nla_put_failure; - if (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, - c->radar_detect_widths)) - goto nla_put_failure; nla_nest_end(msg, nl_combi); } -- cgit v1.1 From 162589f7b162b916ac377753c086e3ba76a9f33d Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 20 Feb 2013 00:56:27 +0100 Subject: nl80211: remove TCP WoWLAN information Just like the radar information, the TCP WoWLAN capability data can increase the wiphy information and make it too big. Remove the TCP WoWLAN information; no driver supports it and new userspace tools will be required as well. Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 45 --------------------------------------------- 1 file changed, 45 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index cf4c794..e652d05 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -904,48 +904,6 @@ nla_put_failure: return -ENOBUFS; } -#ifdef CONFIG_PM -static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, - struct sk_buff *msg) -{ - const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan.tcp; - struct nlattr *nl_tcp; - - if (!tcp) - return 0; - - nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); - if (!nl_tcp) - return -ENOBUFS; - - if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, - tcp->data_payload_max)) - return -ENOBUFS; - - if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, - tcp->data_payload_max)) - return -ENOBUFS; - - if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) - return -ENOBUFS; - - if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, - sizeof(*tcp->tok), tcp->tok)) - return -ENOBUFS; - - if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, - tcp->data_interval_max)) - return -ENOBUFS; - - if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, - tcp->wake_payload_max)) - return -ENOBUFS; - - nla_nest_end(msg, nl_tcp); - return 0; -} -#endif - static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flags, struct cfg80211_registered_device *dev) { @@ -1320,9 +1278,6 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flag goto nla_put_failure; } - if (nl80211_send_wowlan_tcp_caps(dev, msg)) - goto nla_put_failure; - nla_nest_end(msg, nl_wowlan); } #endif -- cgit v1.1 From 163df6cf292a1024277f500038fc0ed493635673 Mon Sep 17 00:00:00 2001 From: Chun-Yeow Yeoh Date: Tue, 19 Feb 2013 10:04:50 +0800 Subject: mac80211: fix the problem of forwarding from DS to DS in Mesh Unicast frame with unknown forwarding information always trigger the path discovery assuming destination is always located inside the MBSS. This patch allows the forwarding to look for mesh gate if path discovery inside the MBSS has failed. Reported-by: Cedric Voncken Signed-off-by: Chun-Yeow Yeoh Signed-off-by: Johannes Berg --- net/mac80211/tx.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 5800c7a..bb05a0f 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1844,9 +1844,24 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb, } if (!is_multicast_ether_addr(skb->data)) { + struct sta_info *next_hop; + bool mpp_lookup = true; + mpath = mesh_path_lookup(sdata, skb->data); - if (!mpath) + if (mpath) { + mpp_lookup = false; + next_hop = rcu_dereference(mpath->next_hop); + if (!next_hop || + !(mpath->flags & (MESH_PATH_ACTIVE | + MESH_PATH_RESOLVING))) + mpp_lookup = true; + } + + if (mpp_lookup) mppath = mpp_path_lookup(sdata, skb->data); + + if (mppath && mpath) + mesh_path_del(mpath->sdata, mpath->dst); } /* -- cgit v1.1 From c8dc9c654794a765ca61baed07f84ed8aaa7ca8c Mon Sep 17 00:00:00 2001 From: Joe Lawrence Date: Thu, 21 Feb 2013 13:28:09 +1100 Subject: md: raid1,10: Handle REQ_WRITE_SAME flag in write bios Set mddev queue's max_write_same_sectors to its chunk_sector value (before disk_stack_limits merges the underlying disk limits.) With that in place, be sure to handle writes coming down from the block layer that have the REQ_WRITE_SAME flag set. That flag needs to be copied into any newly cloned write bio. Signed-off-by: Joe Lawrence Acked-by: "Martin K. Petersen" Signed-off-by: NeilBrown --- drivers/md/raid1.c | 7 ++++++- drivers/md/raid10.c | 9 +++++++-- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index d5bddfc..6e5d5a5 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1000,6 +1000,7 @@ static void make_request(struct mddev *mddev, struct bio * bio) const unsigned long do_flush_fua = (bio->bi_rw & (REQ_FLUSH | REQ_FUA)); const unsigned long do_discard = (bio->bi_rw & (REQ_DISCARD | REQ_SECURE)); + const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME); struct md_rdev *blocked_rdev; struct blk_plug_cb *cb; struct raid1_plug_cb *plug = NULL; @@ -1301,7 +1302,8 @@ read_again: conf->mirrors[i].rdev->data_offset); mbio->bi_bdev = conf->mirrors[i].rdev->bdev; mbio->bi_end_io = raid1_end_write_request; - mbio->bi_rw = WRITE | do_flush_fua | do_sync | do_discard; + mbio->bi_rw = + WRITE | do_flush_fua | do_sync | do_discard | do_same; mbio->bi_private = r1_bio; atomic_inc(&r1_bio->remaining); @@ -2818,6 +2820,9 @@ static int run(struct mddev *mddev) if (IS_ERR(conf)) return PTR_ERR(conf); + if (mddev->queue) + blk_queue_max_write_same_sectors(mddev->queue, + mddev->chunk_sectors); rdev_for_each(rdev, mddev) { if (!mddev->gendisk) continue; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 64d4824..1a74c12 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1105,6 +1105,7 @@ static void make_request(struct mddev *mddev, struct bio * bio) const unsigned long do_fua = (bio->bi_rw & REQ_FUA); const unsigned long do_discard = (bio->bi_rw & (REQ_DISCARD | REQ_SECURE)); + const unsigned long do_same = (bio->bi_rw & REQ_WRITE_SAME); unsigned long flags; struct md_rdev *blocked_rdev; struct blk_plug_cb *cb; @@ -1460,7 +1461,8 @@ retry_write: rdev)); mbio->bi_bdev = rdev->bdev; mbio->bi_end_io = raid10_end_write_request; - mbio->bi_rw = WRITE | do_sync | do_fua | do_discard; + mbio->bi_rw = + WRITE | do_sync | do_fua | do_discard | do_same; mbio->bi_private = r10_bio; atomic_inc(&r10_bio->remaining); @@ -1502,7 +1504,8 @@ retry_write: r10_bio, rdev)); mbio->bi_bdev = rdev->bdev; mbio->bi_end_io = raid10_end_write_request; - mbio->bi_rw = WRITE | do_sync | do_fua | do_discard; + mbio->bi_rw = + WRITE | do_sync | do_fua | do_discard | do_same; mbio->bi_private = r10_bio; atomic_inc(&r10_bio->remaining); @@ -3569,6 +3572,8 @@ static int run(struct mddev *mddev) if (mddev->queue) { blk_queue_max_discard_sectors(mddev->queue, mddev->chunk_sectors); + blk_queue_max_write_same_sectors(mddev->queue, + mddev->chunk_sectors); blk_queue_io_min(mddev->queue, chunk_size); if (conf->geo.raid_disks % conf->geo.near_copies) blk_queue_io_opt(mddev->queue, chunk_size * conf->geo.raid_disks); -- cgit v1.1 From 4c0ca26bd260dddf3b9781758cb5e2df3f74d4a3 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 21 Feb 2013 13:28:09 +1100 Subject: MD RAID10: Minor non-functional code changes Changes include assigning 'addr' from 's' instead of 'sector' to be consistent with the way the code does it just a few lines later and using '%=' vs a conditional and subtraction. Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/raid10.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 1a74c12..de174ad 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -552,14 +552,13 @@ static void __raid10_find_phys(struct geom *geo, struct r10bio *r10bio) for (n = 0; n < geo->near_copies; n++) { int d = dev; sector_t s = sector; - r10bio->devs[slot].addr = sector; r10bio->devs[slot].devnum = d; + r10bio->devs[slot].addr = s; slot++; for (f = 1; f < geo->far_copies; f++) { d += geo->near_copies; - if (d >= geo->raid_disks) - d -= geo->raid_disks; + d %= geo->raid_disks; s += geo->stride; r10bio->devs[slot].devnum = d; r10bio->devs[slot].addr = s; -- cgit v1.1 From 475901aff15841fb0a81e7546517407779a9b061 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 21 Feb 2013 13:28:10 +1100 Subject: MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 1) The MD RAID10 'far' and 'offset' algorithms make copies of entire stripe widths - copying them to a different location on the same devices after shifting the stripe. An example layout of each follows below: "far" algorithm dev1 dev2 dev3 dev4 dev5 dev6 ==== ==== ==== ==== ==== ==== A B C D E F G H I J K L ... F A B C D E --> Copy of stripe0, but shifted by 1 L G H I J K ... "offset" algorithm dev1 dev2 dev3 dev4 dev5 dev6 ==== ==== ==== ==== ==== ==== A B C D E F F A B C D E --> Copy of stripe0, but shifted by 1 G H I J K L L G H I J K ... Redundancy for these algorithms is gained by shifting the copied stripes one device to the right. This patch proposes that array be divided into sets of adjacent devices and when the stripe copies are shifted, they wrap on set boundaries rather than the array size boundary. That is, for the purposes of shifting, the copies are confined to their sets within the array. The sets are 'near_copies * far_copies' in size. The above "far" algorithm example would change to: "far" algorithm dev1 dev2 dev3 dev4 dev5 dev6 ==== ==== ==== ==== ==== ==== A B C D E F G H I J K L ... B A D C F E --> Copy of stripe0, shifted 1, 2-dev sets H G J I L K Dev sets are 1-2, 3-4, 5-6 ... This has the affect of improving the redundancy of the array. We can always sustain at least one failure, but sometimes more than one can be handled. In the first examples, the pairs of devices that CANNOT fail together are: (1,2) (2,3) (3,4) (4,5) (5,6) (1, 6) [40% of possible pairs] In the example where the copies are confined to sets, the pairs of devices that cannot fail together are: (1,2) (3,4) (5,6) [20% of possible pairs] We cannot simply replace the old algorithms, so the 17th bit of the 'layout' variable is used to indicate whether we use the old or new method of computing the shift. (This is similar to the way the 16th bit indicates whether the "far" algorithm or the "offset" algorithm is being used.) This patch only handles the cases where the number of total raid disks is a multiple of 'far_copies'. A follow-on patch addresses the condition where this is not true. Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/raid10.c | 58 ++++++++++++++++++++++++++++++++++++----------------- drivers/md/raid10.h | 5 +++++ 2 files changed, 45 insertions(+), 18 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index de174ad..70b58b4 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -38,21 +38,36 @@ * near_copies (stored in low byte of layout) * far_copies (stored in second byte of layout) * far_offset (stored in bit 16 of layout ) + * use_far_sets (stored in bit 17 of layout ) * - * The data to be stored is divided into chunks using chunksize. - * Each device is divided into far_copies sections. - * In each section, chunks are laid out in a style similar to raid0, but - * near_copies copies of each chunk is stored (each on a different drive). - * The starting device for each section is offset near_copies from the starting - * device of the previous section. - * Thus they are (near_copies*far_copies) of each chunk, and each is on a different - * drive. - * near_copies and far_copies must be at least one, and their product is at most - * raid_disks. + * The data to be stored is divided into chunks using chunksize. Each device + * is divided into far_copies sections. In each section, chunks are laid out + * in a style similar to raid0, but near_copies copies of each chunk is stored + * (each on a different drive). The starting device for each section is offset + * near_copies from the starting device of the previous section. Thus there + * are (near_copies * far_copies) of each chunk, and each is on a different + * drive. near_copies and far_copies must be at least one, and their product + * is at most raid_disks. * * If far_offset is true, then the far_copies are handled a bit differently. - * The copies are still in different stripes, but instead of be very far apart - * on disk, there are adjacent stripes. + * The copies are still in different stripes, but instead of being very far + * apart on disk, there are adjacent stripes. + * + * The far and offset algorithms are handled slightly differently if + * 'use_far_sets' is true. In this case, the array's devices are grouped into + * sets that are (near_copies * far_copies) in size. The far copied stripes + * are still shifted by 'near_copies' devices, but this shifting stays confined + * to the set rather than the entire array. This is done to improve the number + * of device combinations that can fail without causing the array to fail. + * Example 'far' algorithm w/o 'use_far_sets' (each letter represents a chunk + * on a device): + * A B C D A B C D E + * ... ... + * D A B C E A B C D + * Example 'far' algorithm w/ 'use_far_sets' enabled (sets illustrated w/ []'s): + * [A B] [C D] [A B] [C D E] + * |...| |...| |...| | ... | + * [B A] [D C] [B A] [E C D] */ /* @@ -551,14 +566,18 @@ static void __raid10_find_phys(struct geom *geo, struct r10bio *r10bio) /* and calculate all the others */ for (n = 0; n < geo->near_copies; n++) { int d = dev; + int set; sector_t s = sector; r10bio->devs[slot].devnum = d; r10bio->devs[slot].addr = s; slot++; for (f = 1; f < geo->far_copies; f++) { + set = d / geo->far_set_size; d += geo->near_copies; - d %= geo->raid_disks; + d %= geo->far_set_size; + d += geo->far_set_size * set; + s += geo->stride; r10bio->devs[slot].devnum = d; r10bio->devs[slot].addr = s; @@ -594,6 +613,8 @@ static sector_t raid10_find_virt(struct r10conf *conf, sector_t sector, int dev) * or recovery, so reshape isn't happening */ struct geom *geo = &conf->geo; + int far_set_start = (dev / geo->far_set_size) * geo->far_set_size; + int far_set_size = geo->far_set_size; offset = sector & geo->chunk_mask; if (geo->far_offset) { @@ -601,13 +622,13 @@ static sector_t raid10_find_virt(struct r10conf *conf, sector_t sector, int dev) chunk = sector >> geo->chunk_shift; fc = sector_div(chunk, geo->far_copies); dev -= fc * geo->near_copies; - if (dev < 0) - dev += geo->raid_disks; + if (dev < far_set_start) + dev += far_set_size; } else { while (sector >= geo->stride) { sector -= geo->stride; - if (dev < geo->near_copies) - dev += geo->raid_disks - geo->near_copies; + if (dev < (geo->near_copies + far_set_start)) + dev += far_set_size - geo->near_copies; else dev -= geo->near_copies; } @@ -3438,7 +3459,7 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new) disks = mddev->raid_disks + mddev->delta_disks; break; } - if (layout >> 17) + if (layout >> 18) return -1; if (chunk < (PAGE_SIZE >> 9) || !is_power_of_2(chunk)) @@ -3450,6 +3471,7 @@ static int setup_geo(struct geom *geo, struct mddev *mddev, enum geo_type new) geo->near_copies = nc; geo->far_copies = fc; geo->far_offset = fo; + geo->far_set_size = (layout & (1<<17)) ? disks / fc : disks; geo->chunk_mask = chunk - 1; geo->chunk_shift = ffz(~chunk); return nc*fc; diff --git a/drivers/md/raid10.h b/drivers/md/raid10.h index 1054cf6..157d69e 100644 --- a/drivers/md/raid10.h +++ b/drivers/md/raid10.h @@ -33,6 +33,11 @@ struct r10conf { * far_offset, in which case it is * 1 stripe. */ + int far_set_size; /* The number of devices in a set, + * where a 'set' are devices that + * contain far/offset copies of + * each other. + */ int chunk_shift; /* shift from chunks to sectors */ sector_t chunk_mask; } prev, geo; -- cgit v1.1 From 9a3152ab024867100f2f50d124b998d05fb1c3f6 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 21 Feb 2013 13:28:10 +1100 Subject: MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 2) MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 2) This patch addresses raid arrays that have a number of devices that cannot be evenly divided by 'far_copies'. (E.g. 5 devices, far_copies = 2) This case must be handled differently because it causes that last set to be of a different size than the rest of the sets. We must compute a new modulo for this last set so that copied chunks are properly wrapped around. Example use_far_sets=1, far_copies=2, near_copies=1, devices=5: "far" algorithm dev1 dev2 dev3 dev4 dev5 ==== ==== ==== ==== ==== [ A B ] [ C D E ] [ G H ] [ I J K ] ... [ B A ] [ E C D ] --> nominal set of 2 and last set of 3 [ H G ] [ K I J ] []'s show far/offset sets Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/raid10.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 70b58b4..61ed150 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -550,6 +550,13 @@ static void __raid10_find_phys(struct geom *geo, struct r10bio *r10bio) sector_t stripe; int dev; int slot = 0; + int last_far_set_start, last_far_set_size; + + last_far_set_start = (geo->raid_disks / geo->far_set_size) - 1; + last_far_set_start *= geo->far_set_size; + + last_far_set_size = geo->far_set_size; + last_far_set_size += (geo->raid_disks % geo->far_set_size); /* now calculate first sector/dev */ chunk = r10bio->sector >> geo->chunk_shift; @@ -575,9 +582,16 @@ static void __raid10_find_phys(struct geom *geo, struct r10bio *r10bio) for (f = 1; f < geo->far_copies; f++) { set = d / geo->far_set_size; d += geo->near_copies; - d %= geo->far_set_size; - d += geo->far_set_size * set; + if ((geo->raid_disks % geo->far_set_size) && + (d > last_far_set_start)) { + d -= last_far_set_start; + d %= last_far_set_size; + d += last_far_set_start; + } else { + d %= geo->far_set_size; + d += geo->far_set_size * set; + } s += geo->stride; r10bio->devs[slot].devnum = d; r10bio->devs[slot].addr = s; @@ -615,6 +629,18 @@ static sector_t raid10_find_virt(struct r10conf *conf, sector_t sector, int dev) struct geom *geo = &conf->geo; int far_set_start = (dev / geo->far_set_size) * geo->far_set_size; int far_set_size = geo->far_set_size; + int last_far_set_start; + + if (geo->raid_disks % geo->far_set_size) { + last_far_set_start = (geo->raid_disks / geo->far_set_size) - 1; + last_far_set_start *= geo->far_set_size; + + if (dev >= last_far_set_start) { + far_set_size = geo->far_set_size; + far_set_size += (geo->raid_disks % geo->far_set_size); + far_set_start = last_far_set_start; + } + } offset = sector & geo->chunk_mask; if (geo->far_offset) { -- cgit v1.1 From fe5d2f4a15967bbe907e7b3e31e49dae7af7cc6b Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 21 Feb 2013 13:28:10 +1100 Subject: DM RAID: Add support for MD's RAID10 "far" and "offset" algorithms DM RAID: Add support for MD's RAID10 "far" and "offset" algorithms Until now, dm-raid.c only supported the "near" algorthm of MD's RAID10 implementation. This patch adds support for the "far" and "offset" algorithms, but only with the improved redundancy that is brought with the introduction of the 'use_far_sets' bit, which shifts copied stripes according to smaller sets vs the entire array. That is, the 17th bit of the 'layout' variable that defines the RAID10 implementation will always be set. (More information on how the 'layout' variable selects the RAID10 algorithm can be found in the opening comments of drivers/md/raid10.c.) Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- Documentation/device-mapper/dm-raid.txt | 44 ++++++++++-- drivers/md/dm-raid.c | 123 ++++++++++++++++++++++++++------ 2 files changed, 140 insertions(+), 27 deletions(-) diff --git a/Documentation/device-mapper/dm-raid.txt b/Documentation/device-mapper/dm-raid.txt index 56fb62b..b428556 100644 --- a/Documentation/device-mapper/dm-raid.txt +++ b/Documentation/device-mapper/dm-raid.txt @@ -30,6 +30,7 @@ The target is named "raid" and it accepts the following parameters: raid10 Various RAID10 inspired algorithms chosen by additional params - RAID10: Striped Mirrors (aka 'Striping on top of mirrors') - RAID1E: Integrated Adjacent Stripe Mirroring + - RAID1E: Integrated Offset Stripe Mirroring - and other similar RAID10 variants Reference: Chapter 4 of @@ -64,15 +65,15 @@ The target is named "raid" and it accepts the following parameters: synchronisation state for each region. [raid10_copies <# copies>] - [raid10_format near] + [raid10_format ] These two options are used to alter the default layout of a RAID10 configuration. The number of copies is can be - specified, but the default is 2. There are other variations - to how the copies are laid down - the default and only current - option is "near". Near copies are what most people think of - with respect to mirroring. If these options are left - unspecified, or 'raid10_copies 2' and/or 'raid10_format near' - are given, then the layouts for 2, 3 and 4 devices are: + specified, but the default is 2. There are also three + variations to how the copies are laid down - the default + is "near". Near copies are what most people think of with + respect to mirroring. If these options are left unspecified, + or 'raid10_copies 2' and/or 'raid10_format near' are given, + then the layouts for 2, 3 and 4 devices are: 2 drives 3 drives 4 drives -------- ---------- -------------- A1 A1 A1 A1 A2 A1 A1 A2 A2 @@ -85,6 +86,33 @@ The target is named "raid" and it accepts the following parameters: 3-device layout is what might be called a 'RAID1E - Integrated Adjacent Stripe Mirroring'. + If 'raid10_copies 2' and 'raid10_format far', then the layouts + for 2, 3 and 4 devices are: + 2 drives 3 drives 4 drives + -------- -------------- -------------------- + A1 A2 A1 A2 A3 A1 A2 A3 A4 + A3 A4 A4 A5 A6 A5 A6 A7 A8 + A5 A6 A7 A8 A9 A9 A10 A11 A12 + .. .. .. .. .. .. .. .. .. + A2 A1 A3 A1 A2 A2 A1 A4 A3 + A4 A3 A6 A4 A5 A6 A5 A8 A7 + A6 A5 A9 A7 A8 A10 A9 A12 A11 + .. .. .. .. .. .. .. .. .. + + If 'raid10_copies 2' and 'raid10_format offset', then the + layouts for 2, 3 and 4 devices are: + 2 drives 3 drives 4 drives + -------- ------------ ----------------- + A1 A2 A1 A2 A3 A1 A2 A3 A4 + A2 A1 A3 A1 A2 A2 A1 A4 A3 + A3 A4 A4 A5 A6 A5 A6 A7 A8 + A4 A3 A6 A4 A5 A6 A5 A8 A7 + A5 A6 A7 A8 A9 A9 A10 A11 A12 + A6 A5 A9 A7 A8 A10 A9 A12 A11 + .. .. .. .. .. .. .. .. .. + Here we see layouts closely akin to 'RAID1E - Integrated + Offset Stripe Mirroring'. + <#raid_devs>: The number of devices composing the array. Each device consists of two entries. The first is the device containing the metadata (if any); the second is the one containing the @@ -142,3 +170,5 @@ Version History 1.3.0 Added support for RAID 10 1.3.1 Allow device replacement/rebuild for RAID 10 1.3.2 Fix/improve redundancy checking for RAID10 +1.4.0 Non-functional change. Removes arg from mapping function. +1.4.1 Add RAID10 "far" and "offset" algorithm support. diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 9e58dbd..22fd559 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -91,15 +91,44 @@ static struct raid_type { {"raid6_nc", "RAID6 (N continue)", 2, 4, 6, ALGORITHM_ROTATING_N_CONTINUE} }; +static char *raid10_md_layout_to_format(int layout) +{ + /* + * Bit 16 and 17 stand for "offset" and "use_far_sets" + * Refer to MD's raid10.c for details + */ + if ((layout & 0x10000) && (layout & 0x20000)) + return "offset"; + + if ((layout & 0xFF) > 1) + return "near"; + + return "far"; +} + static unsigned raid10_md_layout_to_copies(int layout) { - return layout & 0xFF; + if ((layout & 0xFF) > 1) + return layout & 0xFF; + return (layout >> 8) & 0xFF; } static int raid10_format_to_md_layout(char *format, unsigned copies) { - /* 1 "far" copy, and 'copies' "near" copies */ - return (1 << 8) | (copies & 0xFF); + unsigned n = 1, f = 1; + + if (!strcmp("near", format)) + n = copies; + else + f = copies; + + if (!strcmp("offset", format)) + return 0x30000 | (f << 8) | n; + + if (!strcmp("far", format)) + return 0x20000 | (f << 8) | n; + + return (f << 8) | n; } static struct raid_type *get_raid_type(char *name) @@ -352,6 +381,7 @@ static int validate_raid_redundancy(struct raid_set *rs) { unsigned i, rebuild_cnt = 0; unsigned rebuilds_per_group, copies, d; + unsigned group_size, last_group_start; for (i = 0; i < rs->md.raid_disks; i++) if (!test_bit(In_sync, &rs->dev[i].rdev.flags) || @@ -379,9 +409,6 @@ static int validate_raid_redundancy(struct raid_set *rs) * as long as the failed devices occur in different mirror * groups (i.e. different stripes). * - * Right now, we only allow for "near" copies. When other - * formats are added, we will have to check those too. - * * When checking "near" format, make sure no adjacent devices * have failed beyond what can be handled. In addition to the * simple case where the number of devices is a multiple of the @@ -391,14 +418,41 @@ static int validate_raid_redundancy(struct raid_set *rs) * A A B B C * C D D E E */ - for (i = 0; i < rs->md.raid_disks * copies; i++) { - if (!(i % copies)) + if (!strcmp("near", raid10_md_layout_to_format(rs->md.layout))) { + for (i = 0; i < rs->md.raid_disks * copies; i++) { + if (!(i % copies)) + rebuilds_per_group = 0; + d = i % rs->md.raid_disks; + if ((!rs->dev[d].rdev.sb_page || + !test_bit(In_sync, &rs->dev[d].rdev.flags)) && + (++rebuilds_per_group >= copies)) + goto too_many; + } + break; + } + + /* + * When checking "far" and "offset" formats, we need to ensure + * that the device that holds its copy is not also dead or + * being rebuilt. (Note that "far" and "offset" formats only + * support two copies right now. These formats also only ever + * use the 'use_far_sets' variant.) + * + * This check is somewhat complicated by the need to account + * for arrays that are not a multiple of (far) copies. This + * results in the need to treat the last (potentially larger) + * set differently. + */ + group_size = (rs->md.raid_disks / copies); + last_group_start = (rs->md.raid_disks / group_size) - 1; + last_group_start *= group_size; + for (i = 0; i < rs->md.raid_disks; i++) { + if (!(i % copies) && !(i > last_group_start)) rebuilds_per_group = 0; - d = i % rs->md.raid_disks; - if ((!rs->dev[d].rdev.sb_page || - !test_bit(In_sync, &rs->dev[d].rdev.flags)) && + if ((!rs->dev[i].rdev.sb_page || + !test_bit(In_sync, &rs->dev[i].rdev.flags)) && (++rebuilds_per_group >= copies)) - goto too_many; + goto too_many; } break; default: @@ -433,7 +487,7 @@ too_many: * * RAID10-only options: * [raid10_copies <# copies>] Number of copies. (Default: 2) - * [raid10_format ] Layout algorithm. (Default: near) + * [raid10_format ] Layout algorithm. (Default: near) */ static int parse_raid_params(struct raid_set *rs, char **argv, unsigned num_raid_params) @@ -520,7 +574,9 @@ static int parse_raid_params(struct raid_set *rs, char **argv, rs->ti->error = "'raid10_format' is an invalid parameter for this RAID type"; return -EINVAL; } - if (strcmp("near", argv[i])) { + if (strcmp("near", argv[i]) && + strcmp("far", argv[i]) && + strcmp("offset", argv[i])) { rs->ti->error = "Invalid 'raid10_format' value given"; return -EINVAL; } @@ -644,6 +700,15 @@ static int parse_raid_params(struct raid_set *rs, char **argv, return -EINVAL; } + /* + * If the format is not "near", we only support + * two copies at the moment. + */ + if (strcmp("near", raid10_format) && (raid10_copies > 2)) { + rs->ti->error = "Too many copies for given RAID10 format."; + return -EINVAL; + } + /* (Len * #mirrors) / #devices */ sectors_per_dev = rs->ti->len * raid10_copies; sector_div(sectors_per_dev, rs->md.raid_disks); @@ -854,17 +919,30 @@ static int super_init_validation(struct mddev *mddev, struct md_rdev *rdev) /* * Reshaping is not currently allowed */ - if ((le32_to_cpu(sb->level) != mddev->level) || - (le32_to_cpu(sb->layout) != mddev->layout) || - (le32_to_cpu(sb->stripe_sectors) != mddev->chunk_sectors)) { - DMERR("Reshaping arrays not yet supported."); + if (le32_to_cpu(sb->level) != mddev->level) { + DMERR("Reshaping arrays not yet supported. (RAID level change)"); + return -EINVAL; + } + if (le32_to_cpu(sb->layout) != mddev->layout) { + DMERR("Reshaping arrays not yet supported. (RAID layout change)"); + DMERR(" 0x%X vs 0x%X", le32_to_cpu(sb->layout), mddev->layout); + DMERR(" Old layout: %s w/ %d copies", + raid10_md_layout_to_format(le32_to_cpu(sb->layout)), + raid10_md_layout_to_copies(le32_to_cpu(sb->layout))); + DMERR(" New layout: %s w/ %d copies", + raid10_md_layout_to_format(mddev->layout), + raid10_md_layout_to_copies(mddev->layout)); + return -EINVAL; + } + if (le32_to_cpu(sb->stripe_sectors) != mddev->chunk_sectors) { + DMERR("Reshaping arrays not yet supported. (stripe sectors change)"); return -EINVAL; } /* We can only change the number of devices in RAID1 right now */ if ((rs->raid_type->level != 1) && (le32_to_cpu(sb->num_devices) != mddev->raid_disks)) { - DMERR("Reshaping arrays not yet supported."); + DMERR("Reshaping arrays not yet supported. (device count change)"); return -EINVAL; } @@ -1329,7 +1407,8 @@ static int raid_status(struct dm_target *ti, status_type_t type, raid10_md_layout_to_copies(rs->md.layout)); if (rs->print_flags & DMPF_RAID10_FORMAT) - DMEMIT(" raid10_format near"); + DMEMIT(" raid10_format %s", + raid10_md_layout_to_format(rs->md.layout)); DMEMIT(" %d", rs->md.raid_disks); for (i = 0; i < rs->md.raid_disks; i++) { @@ -1420,6 +1499,10 @@ static struct target_type raid_target = { static int __init dm_raid_init(void) { + DMINFO("Loading target version %u.%u.%u", + raid_target.version[0], + raid_target.version[1], + raid_target.version[2]); return dm_register_target(&raid_target); } -- cgit v1.1 From a64685399181780998281fe07309a94b25dd24c3 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 21 Feb 2013 14:33:17 +1100 Subject: md: fix two bugs when attempting to resize RAID0 array. You cannot resize a RAID0 array (in terms of making the devices bigger), but the code doesn't entirely stop you. So: disable setting of the available size on each device for RAID0 and Linear devices. This must not change as doing so can change the effective layout of data. Make sure that the size that raid0_size() reports is accurate, but rounding devices sizes to chunk sizes. As the device sizes cannot change now, this isn't so important, but it is best to be safe. Without this change: mdadm --grow /dev/md0 -z max mdadm --grow /dev/md0 -Z max then read to the end of the array can cause a BUG in a RAID0 array. These bugs have been present ever since it became possible to resize any device, which is a long time. So the fix is suitable for any -stable kerenl. Cc: stable@vger.kernel.org Signed-off-by: NeilBrown --- drivers/md/md.c | 3 +++ drivers/md/raid0.c | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 1e634a6..f363135 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2998,6 +2998,9 @@ rdev_size_store(struct md_rdev *rdev, const char *buf, size_t len) } else if (!sectors) sectors = (i_size_read(rdev->bdev->bd_inode) >> 9) - rdev->data_offset; + if (!my_mddev->pers->resize) + /* Cannot change size for RAID0 or Linear etc */ + return -EINVAL; } if (sectors < my_mddev->dev_sectors) return -EINVAL; /* component must fit device */ diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 24b3597..15c8d35 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -411,7 +411,8 @@ static sector_t raid0_size(struct mddev *mddev, sector_t sectors, int raid_disks "%s does not support generic reshape\n", __func__); rdev_for_each(rdev, mddev) - array_sectors += rdev->sectors; + array_sectors += (rdev->sectors & + ~(sector_t)(mddev->chunk_sectors-1)); return array_sectors; } -- cgit v1.1 From 58ebb34c49fcfcaa029e4b1c1453d92583900f9a Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 21 Feb 2013 15:36:38 +1100 Subject: md: raid0: fix error return from create_stripe_zones. Create_stripe_zones returns an error slightly differently to raid0_run and to raid0_takeover_*. The error returned used by the second was wrong and an error would result in mddev->private being set to NULL and sooner or later a crash. So never return NULL, return ERR_PTR(err), not NULL from create_stripe_zones. This bug has been present since 2.6.35 so the fix is suitable for any kernel since then. Cc: stable@vger.kernel.org Signed-off-by: NeilBrown --- drivers/md/raid0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index 15c8d35..d9babda 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -289,7 +289,7 @@ abort: kfree(conf->strip_zone); kfree(conf->devlist); kfree(conf); - *private_conf = NULL; + *private_conf = ERR_PTR(err); return err; } -- cgit v1.1 From f96c9f305c24a0d4a075e2c75aa6b417aa238687 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 21 Feb 2013 15:50:07 +1100 Subject: md/raid0: improve error message when converting RAID4-with-spares to RAID0 Mentioning "bad disk number -1" exposes irrelevant internal detail. Just say they are inactive and must be removed. Signed-off-by: NeilBrown --- drivers/md/raid0.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c index d9babda..0505452 100644 --- a/drivers/md/raid0.c +++ b/drivers/md/raid0.c @@ -175,7 +175,13 @@ static int create_strip_zones(struct mddev *mddev, struct r0conf **private_conf) rdev1->new_raid_disk = j; } - if (j < 0 || j >= mddev->raid_disks) { + if (j < 0) { + printk(KERN_ERR + "md/raid0:%s: remove inactive devices before converting to RAID0\n", + mdname(mddev)); + goto abort; + } + if (j >= mddev->raid_disks) { printk(KERN_ERR "md/raid0:%s: bad disk number %d - " "aborting!\n", mdname(mddev), j); goto abort; -- cgit v1.1 From ee0b0244030434cdda26777bfb98962447e080cd Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 25 Feb 2013 12:38:29 +1100 Subject: md/raid1,raid10: fix deadlock with freeze_array() When raid1/raid10 needs to fix a read error, it first drains all pending requests by calling freeze_array(). This calls flush_pending_writes() if it needs to sleep, but some writes may be pending in a per-process plug rather than in the per-array request queue. When raid1{,0}_unplug() moves the request from the per-process plug to the per-array request queue (from which flush_pending_writes() can flush them), it needs to wake up freeze_array(), or freeze_array() will never flush them and so it will block forever. So add the requires wake_up() calls. This bug was introduced by commit f54a9d0e59c4bea3db733921ca9147612a6f292c for raid1 and a similar commit for RAID10, and so has been present since linux-3.6. As the bug causes a deadlock I believe this fix is suitable for -stable. Cc: stable@vger.kernel.org (3.6.y 3.7.y 3.8.y) Reported-by: Tregaron Bayly Tested-by: Tregaron Bayly Signed-off-by: NeilBrown --- drivers/md/raid1.c | 1 + drivers/md/raid10.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index 6e5d5a5..fd86b37 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -967,6 +967,7 @@ static void raid1_unplug(struct blk_plug_cb *cb, bool from_schedule) bio_list_merge(&conf->pending_bio_list, &plug->pending); conf->pending_count += plug->pending_cnt; spin_unlock_irq(&conf->device_lock); + wake_up(&conf->wait_barrier); md_wakeup_thread(mddev->thread); kfree(plug); return; diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 61ed150..77b562d 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1119,6 +1119,7 @@ static void raid10_unplug(struct blk_plug_cb *cb, bool from_schedule) bio_list_merge(&conf->pending_bio_list, &plug->pending); conf->pending_count += plug->pending_cnt; spin_unlock_irq(&conf->device_lock); + wake_up(&conf->wait_barrier); md_wakeup_thread(mddev->thread); kfree(plug); return; -- cgit v1.1 From 3a68f19d7afb80f548d016effbc6ed52643a8085 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 20 Dec 2012 18:48:20 +0000 Subject: sfc: Properly sync RX DMA buffer when it is not the last in the page We may currently allocate two RX DMA buffers to a page, and only unmap the page when the second is completed. We do not sync the first RX buffer to be completed; this can result in packet loss or corruption if the last RX buffer completed in a NAPI poll is the first in a page and is not DMA-coherent. (In the middle of a NAPI poll, we will handle the following RX completion and unmap the page *before* looking at the content of the first buffer.) Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/rx.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c index d780a0d..a575491 100644 --- a/drivers/net/ethernet/sfc/rx.c +++ b/drivers/net/ethernet/sfc/rx.c @@ -236,7 +236,8 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) } static void efx_unmap_rx_buffer(struct efx_nic *efx, - struct efx_rx_buffer *rx_buf) + struct efx_rx_buffer *rx_buf, + unsigned int used_len) { if ((rx_buf->flags & EFX_RX_BUF_PAGE) && rx_buf->u.page) { struct efx_rx_page_state *state; @@ -247,6 +248,10 @@ static void efx_unmap_rx_buffer(struct efx_nic *efx, state->dma_addr, efx_rx_buf_size(efx), DMA_FROM_DEVICE); + } else if (used_len) { + dma_sync_single_for_cpu(&efx->pci_dev->dev, + rx_buf->dma_addr, used_len, + DMA_FROM_DEVICE); } } else if (!(rx_buf->flags & EFX_RX_BUF_PAGE) && rx_buf->u.skb) { dma_unmap_single(&efx->pci_dev->dev, rx_buf->dma_addr, @@ -269,7 +274,7 @@ static void efx_free_rx_buffer(struct efx_nic *efx, static void efx_fini_rx_buffer(struct efx_rx_queue *rx_queue, struct efx_rx_buffer *rx_buf) { - efx_unmap_rx_buffer(rx_queue->efx, rx_buf); + efx_unmap_rx_buffer(rx_queue->efx, rx_buf, 0); efx_free_rx_buffer(rx_queue->efx, rx_buf); } @@ -535,10 +540,10 @@ void efx_rx_packet(struct efx_rx_queue *rx_queue, unsigned int index, goto out; } - /* Release card resources - assumes all RX buffers consumed in-order - * per RX queue + /* Release and/or sync DMA mapping - assumes all RX buffers + * consumed in-order per RX queue */ - efx_unmap_rx_buffer(efx, rx_buf); + efx_unmap_rx_buffer(efx, rx_buf, len); /* Prefetch nice and early so data will (hopefully) be in cache by * the time we look at it. -- cgit v1.1 From b590ace09d51cd39744e0f7662c5e4a0d1b5d952 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Thu, 10 Jan 2013 23:51:54 +0000 Subject: sfc: Fix efx_rx_buf_offset() in the presence of swiotlb We assume that the mapping between DMA and virtual addresses is done on whole pages, so we can find the page offset of an RX buffer using the lower bits of the DMA address. However, swiotlb maps in units of 2K, breaking this assumption. Add an explicit page_offset field to struct efx_rx_buffer. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/net_driver.h | 4 +++- drivers/net/ethernet/sfc/rx.c | 10 +++++----- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 2d756c1..0a90abd 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -210,6 +210,7 @@ struct efx_tx_queue { * Will be %NULL if the buffer slot is currently free. * @page: The associated page buffer. Valif iff @flags & %EFX_RX_BUF_PAGE. * Will be %NULL if the buffer slot is currently free. + * @page_offset: Offset within page. Valid iff @flags & %EFX_RX_BUF_PAGE. * @len: Buffer length, in bytes. * @flags: Flags for buffer and packet state. */ @@ -219,7 +220,8 @@ struct efx_rx_buffer { struct sk_buff *skb; struct page *page; } u; - unsigned int len; + u16 page_offset; + u16 len; u16 flags; }; #define EFX_RX_BUF_PAGE 0x0001 diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c index a575491..879ff58 100644 --- a/drivers/net/ethernet/sfc/rx.c +++ b/drivers/net/ethernet/sfc/rx.c @@ -90,11 +90,7 @@ static unsigned int rx_refill_threshold; static inline unsigned int efx_rx_buf_offset(struct efx_nic *efx, struct efx_rx_buffer *buf) { - /* Offset is always within one page, so we don't need to consider - * the page order. - */ - return ((unsigned int) buf->dma_addr & (PAGE_SIZE - 1)) + - efx->type->rx_buffer_hash_size; + return buf->page_offset + efx->type->rx_buffer_hash_size; } static inline unsigned int efx_rx_buf_size(struct efx_nic *efx) { @@ -187,6 +183,7 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) struct efx_nic *efx = rx_queue->efx; struct efx_rx_buffer *rx_buf; struct page *page; + unsigned int page_offset; struct efx_rx_page_state *state; dma_addr_t dma_addr; unsigned index, count; @@ -211,12 +208,14 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) state->dma_addr = dma_addr; dma_addr += sizeof(struct efx_rx_page_state); + page_offset = sizeof(struct efx_rx_page_state); split: index = rx_queue->added_count & rx_queue->ptr_mask; rx_buf = efx_rx_buffer(rx_queue, index); rx_buf->dma_addr = dma_addr + EFX_PAGE_IP_ALIGN; rx_buf->u.page = page; + rx_buf->page_offset = page_offset; rx_buf->len = efx->rx_buffer_len - EFX_PAGE_IP_ALIGN; rx_buf->flags = EFX_RX_BUF_PAGE; ++rx_queue->added_count; @@ -227,6 +226,7 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) /* Use the second half of the page */ get_page(page); dma_addr += (PAGE_SIZE >> 1); + page_offset += (PAGE_SIZE >> 1); ++count; goto split; } -- cgit v1.1 From 29c69a4882641285a854d6d03ca5adbba68c0034 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Mon, 28 Jan 2013 19:01:06 +0000 Subject: sfc: Detach net device when stopping queues for reconfiguration We must only ever stop TX queues when they are full or the net device is not 'ready' so far as the net core, and specifically the watchdog, is concerned. Otherwise, the watchdog may fire *immediately* if no packets have been added to the queue in the last 5 seconds. The device is ready if all the following are true: (a) It has a qdisc (b) It is marked present (c) It is running (d) The link is reported up (a) and (c) are normally true, and must not be changed by a driver. (d) is under our control, but fake link changes may disturb userland. This leaves (b). We already mark the device absent during reset and self-test, but we need to do the same during MTU changes and ring reallocation. We don't need to do this when the device is brought down because then (c) is already false. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/efx.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index bf57b3c..0bc0099 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -779,6 +779,7 @@ efx_realloc_channels(struct efx_nic *efx, u32 rxq_entries, u32 txq_entries) tx_queue->txd.entries); } + efx_device_detach_sync(efx); efx_stop_all(efx); efx_stop_interrupts(efx, true); @@ -832,6 +833,7 @@ out: efx_start_interrupts(efx, true); efx_start_all(efx); + netif_device_attach(efx->net_dev); return rc; rollback: @@ -1641,8 +1643,12 @@ static void efx_stop_all(struct efx_nic *efx) /* Flush efx_mac_work(), refill_workqueue, monitor_work */ efx_flush_all(efx); - /* Stop the kernel transmit interface late, so the watchdog - * timer isn't ticking over the flush */ + /* Stop the kernel transmit interface. This is only valid if + * the device is stopped or detached; otherwise the watchdog + * may fire immediately. + */ + WARN_ON(netif_running(efx->net_dev) && + netif_device_present(efx->net_dev)); netif_tx_disable(efx->net_dev); efx_stop_datapath(efx); @@ -1963,16 +1969,18 @@ static int efx_change_mtu(struct net_device *net_dev, int new_mtu) if (new_mtu > EFX_MAX_MTU) return -EINVAL; - efx_stop_all(efx); - netif_dbg(efx, drv, efx->net_dev, "changing MTU to %d\n", new_mtu); + efx_device_detach_sync(efx); + efx_stop_all(efx); + mutex_lock(&efx->mac_lock); net_dev->mtu = new_mtu; efx->type->reconfigure_mac(efx); mutex_unlock(&efx->mac_lock); efx_start_all(efx); + netif_device_attach(efx->net_dev); return 0; } -- cgit v1.1 From a7679ed5a0e92c87eeef33ae463e39a843561836 Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Mon, 25 Feb 2013 14:58:05 -0600 Subject: mac80211: Ensure off-channel frames don't get queued Commit 6c17b77b67587b9f9e3070fb89fe98cef3187131 (mac80211: Fix tx queue handling during scans) contains a bug that causes off-channel frames to get queued when they should be handed down to the driver for transmit. Prevent this from happening. Reported-by: Fabio Rossi Signed-off-by: Seth Forshee Signed-off-by: Johannes Berg --- net/mac80211/tx.c | 56 ++++++++++++++++++++++++++++++------------------------- 1 file changed, 31 insertions(+), 25 deletions(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index bb05a0f..c592a41 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1231,34 +1231,40 @@ static bool ieee80211_tx_frags(struct ieee80211_local *local, if (local->queue_stop_reasons[q] || (!txpending && !skb_queue_empty(&local->pending[q]))) { if (unlikely(info->flags & - IEEE80211_TX_INTFL_OFFCHAN_TX_OK && - local->queue_stop_reasons[q] & - ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL))) { + IEEE80211_TX_INTFL_OFFCHAN_TX_OK)) { + if (local->queue_stop_reasons[q] & + ~BIT(IEEE80211_QUEUE_STOP_REASON_OFFCHANNEL)) { + /* + * Drop off-channel frames if queues + * are stopped for any reason other + * than off-channel operation. Never + * queue them. + */ + spin_unlock_irqrestore( + &local->queue_stop_reason_lock, + flags); + ieee80211_purge_tx_queue(&local->hw, + skbs); + return true; + } + } else { + /* - * Drop off-channel frames if queues are stopped - * for any reason other than off-channel - * operation. Never queue them. + * Since queue is stopped, queue up frames for + * later transmission from the tx-pending + * tasklet when the queue is woken again. */ - spin_unlock_irqrestore( - &local->queue_stop_reason_lock, flags); - ieee80211_purge_tx_queue(&local->hw, skbs); - return true; + if (txpending) + skb_queue_splice_init(skbs, + &local->pending[q]); + else + skb_queue_splice_tail_init(skbs, + &local->pending[q]); + + spin_unlock_irqrestore(&local->queue_stop_reason_lock, + flags); + return false; } - - /* - * Since queue is stopped, queue up frames for later - * transmission from the tx-pending tasklet when the - * queue is woken again. - */ - if (txpending) - skb_queue_splice_init(skbs, &local->pending[q]); - else - skb_queue_splice_tail_init(skbs, - &local->pending[q]); - - spin_unlock_irqrestore(&local->queue_stop_reason_lock, - flags); - return false; } spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags); -- cgit v1.1 From b759f4ddcafb6414056cf3e49f2ab12359101c2e Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 23 Feb 2013 18:40:57 +0100 Subject: mac80211: fix idle handling in monitor mode When the driver does not want a monitor mode VIF, no channel context is allocated for it. This causes ieee80211_recalc_idle to put the hardware into idle mode if only a monitor mode is active, breaking injection. Fix this by checking local->monitors in addition to active channel contexts. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg --- net/mac80211/iface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 2c059e5..640afab 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -107,7 +107,7 @@ void ieee80211_recalc_idle(struct ieee80211_local *local) lockdep_assert_held(&local->mtx); - active = !list_empty(&local->chanctx_list); + active = !list_empty(&local->chanctx_list) || local->monitors; if (!local->ops->remain_on_channel) { list_for_each_entry(roc, &local->roc_list, list) { -- cgit v1.1 From cb601ffa326bc5c74a6ecd8e72ae9631e5f12f75 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 23 Feb 2013 19:02:14 +0100 Subject: mac80211: fix monitor mode channel reporting When not using channel contexts with only monitor mode interfaces being active, report local->monitor_chandef to userspace. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 09d96a8..808f5fc 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3285,13 +3285,19 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy, struct cfg80211_chan_def *chandef) { struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_chanctx_conf *chanctx_conf; int ret = -ENODATA; rcu_read_lock(); - chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (chanctx_conf) { - *chandef = chanctx_conf->def; + if (local->use_chanctx) { + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (chanctx_conf) { + *chandef = chanctx_conf->def; + ret = 0; + } + } else if (local->open_count == local->monitors) { + *chandef = local->monitor_chandef; ret = 0; } rcu_read_unlock(); -- cgit v1.1 From 8a964f44e01ad3bbc208c3e80d931ba91b9ea786 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 25 Feb 2013 16:01:34 +0100 Subject: iwlwifi: always copy first 16 bytes of commands The FH hardware will always write back to the scratch field in commands, even host commands not just TX commands, which can overwrite parts of the command. This is problematic if the command is re-used (with IWL_HCMD_DFL_NOCOPY) and can cause calibration issues. Address this problem by always putting at least the first 16 bytes into the buffer we also use for the command header and therefore make the DMA engine write back into this. For commands that are smaller than 16 bytes also always map enough memory for the DMA engine to write back to. Cc: stable@vger.kernel.org Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/iwl-devtrace.h | 10 ++-- drivers/net/wireless/iwlwifi/pcie/internal.h | 9 ++++ drivers/net/wireless/iwlwifi/pcie/tx.c | 75 +++++++++++++++++++++------- 3 files changed, 71 insertions(+), 23 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h index 9a0f45e..10f0179 100644 --- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h +++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h @@ -349,25 +349,23 @@ TRACE_EVENT(iwlwifi_dev_rx_data, TRACE_EVENT(iwlwifi_dev_hcmd, TP_PROTO(const struct device *dev, struct iwl_host_cmd *cmd, u16 total_size, - const void *hdr, size_t hdr_len), - TP_ARGS(dev, cmd, total_size, hdr, hdr_len), + struct iwl_cmd_header *hdr), + TP_ARGS(dev, cmd, total_size, hdr), TP_STRUCT__entry( DEV_ENTRY __dynamic_array(u8, hcmd, total_size) __field(u32, flags) ), TP_fast_assign( - int i, offset = hdr_len; + int i, offset = sizeof(*hdr); DEV_ASSIGN; __entry->flags = cmd->flags; - memcpy(__get_dynamic_array(hcmd), hdr, hdr_len); + memcpy(__get_dynamic_array(hcmd), hdr, sizeof(*hdr)); for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { if (!cmd->len[i]) continue; - if (!(cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY)) - continue; memcpy((u8 *)__get_dynamic_array(hcmd) + offset, cmd->data[i], cmd->len[i]); offset += cmd->len[i]; diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h index aa2a39a..3d62e80 100644 --- a/drivers/net/wireless/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/iwlwifi/pcie/internal.h @@ -182,6 +182,15 @@ struct iwl_queue { #define TFD_TX_CMD_SLOTS 256 #define TFD_CMD_SLOTS 32 +/* + * The FH will write back to the first TB only, so we need + * to copy some data into the buffer regardless of whether + * it should be mapped or not. This indicates how much to + * copy, even for HCMDs it must be big enough to fit the + * DRAM scratch from the TX cmd, at least 16 bytes. + */ +#define IWL_HCMD_MIN_COPY_SIZE 16 + struct iwl_pcie_txq_entry { struct iwl_device_cmd *cmd; struct iwl_device_cmd *copy_cmd; diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 8e9e321..8b625a7 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -1152,10 +1152,12 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, void *dup_buf = NULL; dma_addr_t phys_addr; int idx; - u16 copy_size, cmd_size; + u16 copy_size, cmd_size, dma_size; bool had_nocopy = false; int i; u32 cmd_pos; + const u8 *cmddata[IWL_MAX_CMD_TFDS]; + u16 cmdlen[IWL_MAX_CMD_TFDS]; copy_size = sizeof(out_cmd->hdr); cmd_size = sizeof(out_cmd->hdr); @@ -1164,8 +1166,23 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, BUILD_BUG_ON(IWL_MAX_CMD_TFDS > IWL_NUM_OF_TBS - 1); for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { + cmddata[i] = cmd->data[i]; + cmdlen[i] = cmd->len[i]; + if (!cmd->len[i]) continue; + + /* need at least IWL_HCMD_MIN_COPY_SIZE copied */ + if (copy_size < IWL_HCMD_MIN_COPY_SIZE) { + int copy = IWL_HCMD_MIN_COPY_SIZE - copy_size; + + if (copy > cmdlen[i]) + copy = cmdlen[i]; + cmdlen[i] -= copy; + cmddata[i] += copy; + copy_size += copy; + } + if (cmd->dataflags[i] & IWL_HCMD_DFL_NOCOPY) { had_nocopy = true; if (WARN_ON(cmd->dataflags[i] & IWL_HCMD_DFL_DUP)) { @@ -1185,7 +1202,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, goto free_dup_buf; } - dup_buf = kmemdup(cmd->data[i], cmd->len[i], + dup_buf = kmemdup(cmddata[i], cmdlen[i], GFP_ATOMIC); if (!dup_buf) return -ENOMEM; @@ -1195,7 +1212,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, idx = -EINVAL; goto free_dup_buf; } - copy_size += cmd->len[i]; + copy_size += cmdlen[i]; } cmd_size += cmd->len[i]; } @@ -1242,14 +1259,31 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, /* and copy the data that needs to be copied */ cmd_pos = offsetof(struct iwl_device_cmd, payload); + copy_size = sizeof(out_cmd->hdr); for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { - if (!cmd->len[i]) + int copy = 0; + + if (!cmd->len) continue; - if (cmd->dataflags[i] & (IWL_HCMD_DFL_NOCOPY | - IWL_HCMD_DFL_DUP)) - break; - memcpy((u8 *)out_cmd + cmd_pos, cmd->data[i], cmd->len[i]); - cmd_pos += cmd->len[i]; + + /* need at least IWL_HCMD_MIN_COPY_SIZE copied */ + if (copy_size < IWL_HCMD_MIN_COPY_SIZE) { + copy = IWL_HCMD_MIN_COPY_SIZE - copy_size; + + if (copy > cmd->len[i]) + copy = cmd->len[i]; + } + + /* copy everything if not nocopy/dup */ + if (!(cmd->dataflags[i] & (IWL_HCMD_DFL_NOCOPY | + IWL_HCMD_DFL_DUP))) + copy = cmd->len[i]; + + if (copy) { + memcpy((u8 *)out_cmd + cmd_pos, cmd->data[i], copy); + cmd_pos += copy; + copy_size += copy; + } } WARN_ON_ONCE(txq->entries[idx].copy_cmd); @@ -1275,7 +1309,14 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), cmd_size, q->write_ptr, idx, trans_pcie->cmd_queue); - phys_addr = dma_map_single(trans->dev, &out_cmd->hdr, copy_size, + /* + * If the entire command is smaller than IWL_HCMD_MIN_COPY_SIZE, we must + * still map at least that many bytes for the hardware to write back to. + * We have enough space, so that's not a problem. + */ + dma_size = max_t(u16, copy_size, IWL_HCMD_MIN_COPY_SIZE); + + phys_addr = dma_map_single(trans->dev, &out_cmd->hdr, dma_size, DMA_BIDIRECTIONAL); if (unlikely(dma_mapping_error(trans->dev, phys_addr))) { idx = -ENOMEM; @@ -1283,14 +1324,15 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, } dma_unmap_addr_set(out_meta, mapping, phys_addr); - dma_unmap_len_set(out_meta, len, copy_size); + dma_unmap_len_set(out_meta, len, dma_size); iwl_pcie_txq_build_tfd(trans, txq, phys_addr, copy_size, 1); + /* map the remaining (adjusted) nocopy/dup fragments */ for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { - const void *data = cmd->data[i]; + const void *data = cmddata[i]; - if (!cmd->len[i]) + if (!cmdlen[i]) continue; if (!(cmd->dataflags[i] & (IWL_HCMD_DFL_NOCOPY | IWL_HCMD_DFL_DUP))) @@ -1298,7 +1340,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, if (cmd->dataflags[i] & IWL_HCMD_DFL_DUP) data = dup_buf; phys_addr = dma_map_single(trans->dev, (void *)data, - cmd->len[i], DMA_BIDIRECTIONAL); + cmdlen[i], DMA_BIDIRECTIONAL); if (dma_mapping_error(trans->dev, phys_addr)) { iwl_pcie_tfd_unmap(trans, out_meta, &txq->tfds[q->write_ptr], @@ -1307,7 +1349,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, goto out; } - iwl_pcie_txq_build_tfd(trans, txq, phys_addr, cmd->len[i], 0); + iwl_pcie_txq_build_tfd(trans, txq, phys_addr, cmdlen[i], 0); } out_meta->flags = cmd->flags; @@ -1317,8 +1359,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, txq->need_update = 1; - trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, - &out_cmd->hdr, copy_size); + trace_iwlwifi_dev_hcmd(trans->dev, cmd, cmd_size, &out_cmd->hdr); /* start timer if queue currently empty */ if (q->read_ptr == q->write_ptr && trans_pcie->wd_timeout) -- cgit v1.1 From 38a12b5b029dec6e6dad1b5d3269b4c356c44c0e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 22 Feb 2013 14:07:56 +0100 Subject: iwlwifi: mvm: fix AP/GO mode station removal When stations are removed while packets are in the queue, we drain the queues first, and then remove the stations. If this happens in AP mode while the interface is removed the MAC context might be removed from the firmware before we removed the station(s), resulting in a SYSASSERT 3421. This is because we remove the MAC context from the FW in stop_ap(), but only flush the station drain work later in remove_interface(). Refactor the code a bit to have a common MAC context removal preparation first to solve this. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/mac80211.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/iwlwifi/mvm/mac80211.c index e8264e1..7e169b0 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/iwlwifi/mvm/mac80211.c @@ -557,11 +557,9 @@ static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw, return ret; } -static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, - struct ieee80211_vif *vif) +static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm, + struct ieee80211_vif *vif) { - struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); - struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); u32 tfd_msk = 0, ac; for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) @@ -594,12 +592,21 @@ static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, */ flush_work(&mvm->sta_drained_wk); } +} + +static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + + iwl_mvm_prepare_mac_removal(mvm, vif); mutex_lock(&mvm->mutex); /* * For AP/GO interface, the tear down of the resources allocated to the - * interface should be handled as part of the bss_info_changed flow. + * interface is be handled as part of the stop_ap flow. */ if (vif->type == NL80211_IFTYPE_AP) { iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta); @@ -763,6 +770,8 @@ static void iwl_mvm_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif) struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + iwl_mvm_prepare_mac_removal(mvm, vif); + mutex_lock(&mvm->mutex); mvmvif->ap_active = false; -- cgit v1.1 From 46c498c2cdee5efe44f617bcd4f388179be36115 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Tue, 26 Feb 2013 18:44:33 +0100 Subject: stop_machine: Mark per cpu stopper enabled early commit 14e568e78 (stop_machine: Use smpboot threads) introduced the following regression: Before this commit the stopper enabled bit was set in the online notifier. CPU0 CPU1 cpu_up cpu online hotplug_notifier(ONLINE) stopper(CPU1)->enabled = true; ... stop_machine() The conversion to smpboot threads moved the enablement to the wakeup path of the parked thread. The majority of users seem to have the following working order: CPU0 CPU1 cpu_up cpu online unpark_threads() wakeup(stopper[CPU1]) .... stopper thread runs stopper(CPU1)->enabled = true; stop_machine() But Konrad and Sander have observed: CPU0 CPU1 cpu_up cpu online unpark_threads() wakeup(stopper[CPU1]) .... stop_machine() stopper thread runs stopper(CPU1)->enabled = true; Now the stop machinery kicks CPU0 into the stop loop, where it gets stuck forever because the queue code saw stopper(CPU1)->enabled == false, so CPU0 waits for CPU1 to enter stomp_machine, but the CPU1 stopper work got discarded due to enabled == false. Add a pre_unpark function to the smpboot thread descriptor and call it before waking the thread. This fixes the problem at hand, but the stop_machine code should be more robust. The stopper->enabled flag smells fishy at best. Thanks to Konrad for going through a loop of debug patches and providing the information to decode this issue. Reported-and-tested-by: Konrad Rzeszutek Wilk Reported-and-tested-by: Sander Eikelenboom Cc: Srivatsa S. Bhat Cc: Rusty Russell Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1302261843240.22263@ionos Signed-off-by: Thomas Gleixner --- include/linux/smpboot.h | 4 ++++ kernel/smpboot.c | 2 ++ kernel/stop_machine.c | 2 +- 3 files changed, 7 insertions(+), 1 deletion(-) diff --git a/include/linux/smpboot.h b/include/linux/smpboot.h index c65dee0..13e9296 100644 --- a/include/linux/smpboot.h +++ b/include/linux/smpboot.h @@ -24,6 +24,9 @@ struct smpboot_thread_data; * parked (cpu offline) * @unpark: Optional unpark function, called when the thread is * unparked (cpu online) + * @pre_unpark: Optional unpark function, called before the thread is + * unparked (cpu online). This is not guaranteed to be + * called on the target cpu of the thread. Careful! * @selfparking: Thread is not parked by the park function. * @thread_comm: The base name of the thread */ @@ -37,6 +40,7 @@ struct smp_hotplug_thread { void (*cleanup)(unsigned int cpu, bool online); void (*park)(unsigned int cpu); void (*unpark)(unsigned int cpu); + void (*pre_unpark)(unsigned int cpu); bool selfparking; const char *thread_comm; }; diff --git a/kernel/smpboot.c b/kernel/smpboot.c index d4abac2..8eaed9a 100644 --- a/kernel/smpboot.c +++ b/kernel/smpboot.c @@ -209,6 +209,8 @@ static void smpboot_unpark_thread(struct smp_hotplug_thread *ht, unsigned int cp { struct task_struct *tsk = *per_cpu_ptr(ht->store, cpu); + if (ht->pre_unpark) + ht->pre_unpark(cpu); kthread_unpark(tsk); } diff --git a/kernel/stop_machine.c b/kernel/stop_machine.c index 95d178c..c09f295 100644 --- a/kernel/stop_machine.c +++ b/kernel/stop_machine.c @@ -336,7 +336,7 @@ static struct smp_hotplug_thread cpu_stop_threads = { .create = cpu_stop_create, .setup = cpu_stop_unpark, .park = cpu_stop_park, - .unpark = cpu_stop_unpark, + .pre_unpark = cpu_stop_unpark, .selfparking = true, }; -- cgit v1.1 From 9b5bd5a4917eeb5eca00d1842a74186cfc8dd1c6 Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Wed, 20 Feb 2013 09:41:08 -0800 Subject: mac80211: stop timers before canceling work items Re-order the quiesce code so that timers are always stopped before work-items are flushed. This was not the problem I saw, but I think it may still be more correct. Signed-off-by: Ben Greear Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 9f6464f..6044c6d 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3503,6 +3503,14 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; /* + * Stop timers before deleting work items, as timers + * could race and re-add the work-items. They will be + * re-established on connection. + */ + del_timer_sync(&ifmgd->conn_mon_timer); + del_timer_sync(&ifmgd->bcn_mon_timer); + + /* * we need to use atomic bitops for the running bits * only because both timers might fire at the same * time -- the code here is properly synchronised. @@ -3516,13 +3524,9 @@ void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) if (del_timer_sync(&ifmgd->timer)) set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); - cancel_work_sync(&ifmgd->chswitch_work); if (del_timer_sync(&ifmgd->chswitch_timer)) set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); - - /* these will just be re-established on connection */ - del_timer_sync(&ifmgd->conn_mon_timer); - del_timer_sync(&ifmgd->bcn_mon_timer); + cancel_work_sync(&ifmgd->chswitch_work); } void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) -- cgit v1.1 From 499218595a2e8296b7492af32fcca141b7b8184a Mon Sep 17 00:00:00 2001 From: Ben Greear Date: Wed, 20 Feb 2013 09:41:09 -0800 Subject: mac80211: Fix crash due to un-canceled work-items Some mlme work structs are not cancelled on disassociation nor interface deletion, which leads to them running after the memory has been freed There is not a clean way to cancel these in the disassociation logic because they must be canceled outside of the ifmgd->mtx lock, so just cancel them in mgd_stop logic that tears down the station. This fixes the crashes we see in 3.7.9+. The crash stack trace itself isn't so helpful, but this warning gives more useful info: WARNING: at /home/greearb/git/linux-3.7.dev.y/lib/debugobjects.c:261 debug_print_object+0x7c/0x8d() ODEBUG: free active (active state 0) object type: work_struct hint: ieee80211_sta_monitor_work+0x0/0x14 [mac80211] Modules linked in: [...] Pid: 14743, comm: iw Tainted: G C O 3.7.9+ #11 Call Trace: [] warn_slowpath_common+0x80/0x98 [] warn_slowpath_fmt+0x41/0x43 [] debug_print_object+0x7c/0x8d [] debug_check_no_obj_freed+0x95/0x1c3 [] slab_free_hook+0x70/0x79 [] kfree+0x62/0xb7 [] netdev_release+0x39/0x3e [] device_release+0x52/0x8a [] kobject_release+0x121/0x158 [] kobject_put+0x4c/0x50 [] netdev_run_todo+0x25c/0x27e Cc: stable@vger.kernel.org Signed-off-by: Ben Greear Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 6044c6d..b756d29 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -4319,6 +4319,17 @@ void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; + /* + * Make sure some work items will not run after this, + * they will not do anything but might not have been + * cancelled when disconnecting. + */ + cancel_work_sync(&ifmgd->monitor_work); + cancel_work_sync(&ifmgd->beacon_connection_loss_work); + cancel_work_sync(&ifmgd->request_smps_work); + cancel_work_sync(&ifmgd->csa_connection_drop_work); + cancel_work_sync(&ifmgd->chswitch_work); + mutex_lock(&ifmgd->mtx); if (ifmgd->assoc_data) ieee80211_destroy_assoc_data(sdata, false); -- cgit v1.1 From 0237c11044b3670adcbe80cd6dd721285347f497 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 26 Feb 2013 04:06:20 +0000 Subject: drivers: net: ethernet: cpsw: consider number of slaves in interation Make cpsw_add_default_vlan() look at the actual number of slaves for its iteration, so boards with less than 2 slaves don't ooops at boot. Signed-off-by: Daniel Mack Cc: Mugunthan V N Cc: David S. Miller Acked-by: Mugunthan V N Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 7e93df6..01ffbc4 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -731,7 +731,7 @@ static inline void cpsw_add_default_vlan(struct cpsw_priv *priv) writel(vlan, &priv->host_port_regs->port_vlan); - for (i = 0; i < 2; i++) + for (i = 0; i < priv->data.slaves; i++) slave_write(priv->slaves + i, vlan, reg); cpsw_ale_add_vlan(priv->ale, vlan, ALE_ALL_PORTS << port, -- cgit v1.1 From 6c8c4e4c24b9f6cee3d356a51e4a7f2af787a49b Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Mon, 25 Feb 2013 22:26:15 +0000 Subject: bond: check if slave count is 0 in case when deciding to take slave's mac in bond_enslave(), check slave_cnt before actually using slave address. introduced by: commit 409cc1f8a41 (bond: have random dev address by default instead of zeroes) Reported-by: Greg Rose Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 11d01d6..7bd068a 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1629,7 +1629,7 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) /* If this is the first slave, then we need to set the master's hardware * address to be the same as the slave's. */ - if (bond->dev_addr_from_first) + if (bond->slave_cnt == 0 && bond->dev_addr_from_first) bond_set_dev_addr(bond->dev, slave_dev); new_slave = kzalloc(sizeof(struct slave), GFP_KERNEL); -- cgit v1.1 From 114a6f8b52163c0232fbcd7f3808ff04dc61a9b5 Mon Sep 17 00:00:00 2001 From: Marina Makienko Date: Mon, 25 Feb 2013 22:26:50 +0000 Subject: isdn: hisax: add missing usb_free_urb Add missing usb_free_urb() on failure path in st5481_setup_usb(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Marina Makienko Signed-off-by: David S. Miller --- drivers/isdn/hisax/st5481_usb.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/isdn/hisax/st5481_usb.c b/drivers/isdn/hisax/st5481_usb.c index 017c67e..ead0a4f 100644 --- a/drivers/isdn/hisax/st5481_usb.c +++ b/drivers/isdn/hisax/st5481_usb.c @@ -294,13 +294,13 @@ int st5481_setup_usb(struct st5481_adapter *adapter) // Allocate URBs and buffers for interrupt endpoint urb = usb_alloc_urb(0, GFP_KERNEL); if (!urb) { - return -ENOMEM; + goto err1; } intr->urb = urb; buf = kmalloc(INT_PKT_SIZE, GFP_KERNEL); if (!buf) { - return -ENOMEM; + goto err2; } endpoint = &altsetting->endpoint[EP_INT-1]; @@ -313,6 +313,14 @@ int st5481_setup_usb(struct st5481_adapter *adapter) endpoint->desc.bInterval); return 0; +err2: + usb_free_urb(intr->urb); + intr->urb = NULL; +err1: + usb_free_urb(ctrl->urb); + ctrl->urb = NULL; + + return -ENOMEM; } /* -- cgit v1.1 From f444eb10d537c776ce82fbcd07733d75f45346f1 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 26 Feb 2013 12:04:18 +0100 Subject: iwlwifi: fix wakeup status query and packet reporting The wakeup packet in the status response is padded out to a multiple of 4 bytes by the firmware for transfer to the host, take that into account when checking the length of the command. Also, the reported wakeup packet includes the FCS but the userspace API doesn't, so remove that. If it is a data packet it is reported as an 802.3 packet but I forgot to take into account and remove the encryption head/tail, fix all of that as well. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/d3.c | 104 ++++++++++++++++++++++++--------- drivers/net/wireless/iwlwifi/mvm/mvm.h | 4 ++ 2 files changed, 81 insertions(+), 27 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/d3.c b/drivers/net/wireless/iwlwifi/mvm/d3.c index c64d864..994c8c2 100644 --- a/drivers/net/wireless/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/iwlwifi/mvm/d3.c @@ -61,6 +61,7 @@ * *****************************************************************************/ +#include #include #include #include "iwl-modparams.h" @@ -192,6 +193,11 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, sizeof(wkc), &wkc); data->error = ret != 0; + mvm->ptk_ivlen = key->iv_len; + mvm->ptk_icvlen = key->icv_len; + mvm->gtk_ivlen = key->iv_len; + mvm->gtk_icvlen = key->icv_len; + /* don't upload key again */ goto out_unlock; } @@ -304,9 +310,13 @@ static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, */ if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { key->hw_key_idx = 0; + mvm->ptk_ivlen = key->iv_len; + mvm->ptk_icvlen = key->icv_len; } else { data->gtk_key_idx++; key->hw_key_idx = data->gtk_key_idx; + mvm->gtk_ivlen = key->iv_len; + mvm->gtk_icvlen = key->icv_len; } ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); @@ -649,6 +659,11 @@ int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) /* We reprogram keys and shouldn't allocate new key indices */ memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); + mvm->ptk_ivlen = 0; + mvm->ptk_icvlen = 0; + mvm->ptk_ivlen = 0; + mvm->ptk_icvlen = 0; + /* * The D3 firmware still hardcodes the AP station ID for the * BSS we're associated with as 0. As a result, we have to move @@ -783,7 +798,6 @@ static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, struct iwl_wowlan_status *status; u32 reasons; int ret, len; - bool pkt8023 = false; struct sk_buff *pkt = NULL; iwl_trans_read_mem_bytes(mvm->trans, base, @@ -824,7 +838,8 @@ static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, status = (void *)cmd.resp_pkt->data; if (len - sizeof(struct iwl_cmd_header) != - sizeof(*status) + le32_to_cpu(status->wake_packet_bufsize)) { + sizeof(*status) + + ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4)) { IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); goto out; } @@ -836,61 +851,96 @@ static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, goto report; } - if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) wakeup.magic_pkt = true; - pkt8023 = true; - } - if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) wakeup.pattern_idx = le16_to_cpu(status->pattern_number); - pkt8023 = true; - } if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) wakeup.disconnect = true; - if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) wakeup.gtk_rekey_failure = true; - pkt8023 = true; - } - if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) wakeup.rfkill_release = true; - pkt8023 = true; - } - if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) wakeup.eap_identity_req = true; - pkt8023 = true; - } - if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) { + if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) wakeup.four_way_handshake = true; - pkt8023 = true; - } if (status->wake_packet_bufsize) { - u32 pktsize = le32_to_cpu(status->wake_packet_bufsize); - u32 pktlen = le32_to_cpu(status->wake_packet_length); + int pktsize = le32_to_cpu(status->wake_packet_bufsize); + int pktlen = le32_to_cpu(status->wake_packet_length); + const u8 *pktdata = status->wake_packet; + struct ieee80211_hdr *hdr = (void *)pktdata; + int truncated = pktlen - pktsize; + + /* this would be a firmware bug */ + if (WARN_ON_ONCE(truncated < 0)) + truncated = 0; + + if (ieee80211_is_data(hdr->frame_control)) { + int hdrlen = ieee80211_hdrlen(hdr->frame_control); + int ivlen = 0, icvlen = 4; /* also FCS */ - if (pkt8023) { pkt = alloc_skb(pktsize, GFP_KERNEL); if (!pkt) goto report; - memcpy(skb_put(pkt, pktsize), status->wake_packet, - pktsize); + + memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); + pktdata += hdrlen; + pktsize -= hdrlen; + + if (ieee80211_has_protected(hdr->frame_control)) { + if (is_multicast_ether_addr(hdr->addr1)) { + ivlen = mvm->gtk_ivlen; + icvlen += mvm->gtk_icvlen; + } else { + ivlen = mvm->ptk_ivlen; + icvlen += mvm->ptk_icvlen; + } + } + + /* if truncated, FCS/ICV is (partially) gone */ + if (truncated >= icvlen) { + icvlen = 0; + truncated -= icvlen; + } else { + icvlen -= truncated; + truncated = 0; + } + + pktsize -= ivlen + icvlen; + pktdata += ivlen; + + memcpy(skb_put(pkt, pktsize), pktdata, pktsize); + if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) goto report; wakeup.packet = pkt->data; wakeup.packet_present_len = pkt->len; - wakeup.packet_len = pkt->len - (pktlen - pktsize); + wakeup.packet_len = pkt->len - truncated; wakeup.packet_80211 = false; } else { + int fcslen = 4; + + if (truncated >= 4) { + truncated -= 4; + fcslen = 0; + } else { + fcslen -= truncated; + truncated = 0; + } + pktsize -= fcslen; wakeup.packet = status->wake_packet; wakeup.packet_present_len = pktsize; - wakeup.packet_len = pktlen; + wakeup.packet_len = pktlen - truncated; wakeup.packet_80211 = true; } } diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 4e339cc..537711b 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -327,6 +327,10 @@ struct iwl_mvm { struct led_classdev led; struct ieee80211_vif *p2p_device_vif; + +#ifdef CONFIG_PM_SLEEP + int gtk_ivlen, gtk_icvlen, ptk_ivlen, ptk_icvlen; +#endif }; /* Extract MVM priv from op_mode and _hw */ -- cgit v1.1 From e477598351a40769f5b46ccea78479a1aad6f161 Mon Sep 17 00:00:00 2001 From: Dor Shaish Date: Tue, 12 Feb 2013 09:49:00 +0200 Subject: iwlwifi: mvm: Remove testing of static PIC in PhyDB The PIC was supposed to be a small signature appended to the PhyDB data, but the signature isn't really static and thus attempting to check it just causes the warnings spuriously so remove them. Signed-off-by: Dor Shaish Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/iwl-phy-db.c | 16 ---------------- 1 file changed, 16 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-phy-db.c b/drivers/net/wireless/iwlwifi/iwl-phy-db.c index 14fc8d3..3392011 100644 --- a/drivers/net/wireless/iwlwifi/iwl-phy-db.c +++ b/drivers/net/wireless/iwlwifi/iwl-phy-db.c @@ -136,12 +136,6 @@ struct iwl_calib_res_notif_phy_db { u8 data[]; } __packed; -#define IWL_PHY_DB_STATIC_PIC cpu_to_le32(0x21436587) -static inline void iwl_phy_db_test_pic(__le32 pic) -{ - WARN_ON(IWL_PHY_DB_STATIC_PIC != pic); -} - struct iwl_phy_db *iwl_phy_db_init(struct iwl_trans *trans) { struct iwl_phy_db *phy_db = kzalloc(sizeof(struct iwl_phy_db), @@ -260,11 +254,6 @@ int iwl_phy_db_set_section(struct iwl_phy_db *phy_db, struct iwl_rx_packet *pkt, (size - CHANNEL_NUM_SIZE) / phy_db->channel_num; } - /* Test PIC */ - if (type != IWL_PHY_DB_CFG) - iwl_phy_db_test_pic(*(((__le32 *)phy_db_notif->data) + - (size / sizeof(__le32)) - 1)); - IWL_DEBUG_INFO(phy_db->trans, "%s(%d): [PHYDB]SET: Type %d , Size: %d\n", __func__, __LINE__, type, size); @@ -372,11 +361,6 @@ int iwl_phy_db_get_section_data(struct iwl_phy_db *phy_db, *size = entry->size; } - /* Test PIC */ - if (type != IWL_PHY_DB_CFG) - iwl_phy_db_test_pic(*(((__le32 *)*data) + - (*size / sizeof(__le32)) - 1)); - IWL_DEBUG_INFO(phy_db->trans, "%s(%d): [PHYDB] GET: Type %d , Size: %d\n", __func__, __LINE__, type, *size); -- cgit v1.1 From d0ae708d1acd4bf6ad5b9937d9da44d16ca18f13 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 27 Feb 2013 15:08:28 +0100 Subject: nl80211: remove channel width and extended capa advertising This is another case of data increasing the size of the wiphy information significantly with a new feature, for now remove this as well. Signed-off-by: Johannes Berg --- net/wireless/core.c | 3 +-- net/wireless/nl80211.c | 21 --------------------- 2 files changed, 1 insertion(+), 23 deletions(-) diff --git a/net/wireless/core.c b/net/wireless/core.c index 33b75b9..9220021 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -367,8 +367,7 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) rdev->wiphy.rts_threshold = (u32) -1; rdev->wiphy.coverage_class = 0; - rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH | - NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; + rdev->wiphy.features = NL80211_FEATURE_SCAN_FLUSH; return &rdev->wiphy; } diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index e652d05..7a7b621 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -557,18 +557,6 @@ static int nl80211_msg_put_channel(struct sk_buff *msg, if ((chan->flags & IEEE80211_CHAN_RADAR) && nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) goto nla_put_failure; - if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && - nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) - goto nla_put_failure; - if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && - nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) - goto nla_put_failure; - if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && - nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) - goto nla_put_failure; - if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && - nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) - goto nla_put_failure; if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, DBM_TO_MBM(chan->max_power))) @@ -1310,15 +1298,6 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flag dev->wiphy.max_acl_mac_addrs)) goto nla_put_failure; - if (dev->wiphy.extended_capabilities && - (nla_put(msg, NL80211_ATTR_EXT_CAPA, - dev->wiphy.extended_capabilities_len, - dev->wiphy.extended_capabilities) || - nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, - dev->wiphy.extended_capabilities_len, - dev->wiphy.extended_capabilities_mask))) - goto nla_put_failure; - return genlmsg_end(msg, hdr); nla_put_failure: -- cgit v1.1 From e70ab977991964a5a7ad1182799451d067e62669 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 25 Feb 2013 21:32:25 +0000 Subject: proc connector: reject unprivileged listener bumps While PROC_CN_MCAST_LISTEN/IGNORE is entirely advisory, it was possible for an unprivileged user to turn off notifications for all listeners by sending PROC_CN_MCAST_IGNORE. Instead, require the same privileges as required for a multicast bind. Signed-off-by: Kees Cook Cc: Evgeniy Polyakov Cc: Matt Helsley Cc: stable@vger.kernel.org Acked-by: Evgeniy Polyakov Acked-by: Matt Helsley Signed-off-by: David S. Miller --- drivers/connector/cn_proc.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/connector/cn_proc.c b/drivers/connector/cn_proc.c index fce2000..1110478 100644 --- a/drivers/connector/cn_proc.c +++ b/drivers/connector/cn_proc.c @@ -313,6 +313,12 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg, (task_active_pid_ns(current) != &init_pid_ns)) return; + /* Can only change if privileged. */ + if (!capable(CAP_NET_ADMIN)) { + err = EPERM; + goto out; + } + mc_op = (enum proc_cn_mcast_op *)msg->data; switch (*mc_op) { case PROC_CN_MCAST_LISTEN: @@ -325,6 +331,8 @@ static void cn_proc_mcast_ctl(struct cn_msg *msg, err = EINVAL; break; } + +out: cn_proc_ack(err, msg->seq, msg->ack); } -- cgit v1.1 From 90c7881ecee1f08e0a49172cf61371cf2509ee4a Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 26 Feb 2013 19:15:02 +0000 Subject: irda: small read beyond end of array in debug code charset comes from skb->data. It's a number in the 0-255 range. If we have debugging turned on then this could cause a read beyond the end of the array. Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- net/irda/iriap.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/irda/iriap.c b/net/irda/iriap.c index e71e85b..29340a9 100644 --- a/net/irda/iriap.c +++ b/net/irda/iriap.c @@ -495,8 +495,11 @@ static void iriap_getvaluebyclass_confirm(struct iriap_cb *self, /* case CS_ISO_8859_9: */ /* case CS_UNICODE: */ default: - IRDA_DEBUG(0, "%s(), charset %s, not supported\n", - __func__, ias_charset_types[charset]); + IRDA_DEBUG(0, "%s(), charset [%d] %s, not supported\n", + __func__, charset, + charset < ARRAY_SIZE(ias_charset_types) ? + ias_charset_types[charset] : + "(unknown)"); /* Aborting, close connection! */ iriap_disconnect_request(self); -- cgit v1.1 From e2593fcde1d906b26b81b38755749f7427f3439f Mon Sep 17 00:00:00 2001 From: Dmitry Kravkov Date: Wed, 27 Feb 2013 00:04:59 +0000 Subject: bnx2x: fix UDP checksum for 57710/57711. Since commit 86564c3f "bnx2x: Remove many sparse warnings" UDP csum offload is broken for 57710/57711. Fix return value. Signed-off-by: Dmitry Kravkov CC: Ariel Elior CC: Yuval Mintz Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index ecac04a3..a923bc4 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -3142,7 +3142,7 @@ static inline __le16 bnx2x_csum_fix(unsigned char *t_header, u16 csum, s8 fix) tsum = ~csum_fold(csum_add((__force __wsum) csum, csum_partial(t_header, -fix, 0))); - return bswab16(csum); + return bswab16(tsum); } static inline u32 bnx2x_xmit_type(struct bnx2x *bp, struct sk_buff *skb) -- cgit v1.1 From 1f84eab4ad73bcb7d779cba65291fe62909e373f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Wed, 27 Feb 2013 03:08:58 +0000 Subject: net: cdc_ncm: tag Huawei devices (e.g. E5331) with FLAG_WWAN MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Tag all Huawei NCM devices as WWAN modems, as we don't know of any which are not. This is necessary for userspace clients to know that the device requires further setup on e.g. an AT-capable serial ports before connectivity is available. Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_ncm.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 4a8c25a..61b74a2 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -1213,6 +1213,14 @@ static const struct usb_device_id cdc_devs[] = { .driver_info = (unsigned long) &wwan_info, }, + /* tag Huawei devices as wwan */ + { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, + USB_CLASS_COMM, + USB_CDC_SUBCLASS_NCM, + USB_CDC_PROTO_NONE), + .driver_info = (unsigned long)&wwan_info, + }, + /* Huawei NCM devices disguised as vendor specific */ { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x16), .driver_info = (unsigned long)&wwan_info, -- cgit v1.1 From 45af3fb4a018ef84bf1c9f2dfbd887a41242e77f Mon Sep 17 00:00:00 2001 From: Glen Turner Date: Wed, 27 Feb 2013 04:32:36 +0000 Subject: usb/net/asix_devices: Add USBNET HG20F9 ethernet dongle This USB ethernet adapter was purchased in anodyne packaging from the computer store adjacent to linux.conf.au 2013 in Canberra (Australia). A web search shows other recent purchasers in Lancaster (UK) and Seattle (USA). Just like an emergent virus, our age of e-commerce and airmail allows underdocumented hardware to spread around the world instantly using the vector of ridiculously low prices. Paige Thompson, infected via eBay, discovered that the HG20F9 is a copy of the Asix 88772B; many viruses copy the RNA of other viruses. See Paige's work at . This patch uses her discovery to update the restructured Asix driver in the current kernel. Just as some viruses inhabit seemingly-healthy cells, the HG20F9 uses the Vendor ID 0x066b assigned to Linksys Inc. For the present there is no clash of Product ID 0x20f9. Signed-off-by: Glen Turner Signed-off-by: David S. Miller --- drivers/net/usb/asix_devices.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c index 2205dbc..7097534 100644 --- a/drivers/net/usb/asix_devices.c +++ b/drivers/net/usb/asix_devices.c @@ -924,6 +924,29 @@ static const struct driver_info ax88178_info = { .tx_fixup = asix_tx_fixup, }; +/* + * USBLINK 20F9 "USB 2.0 LAN" USB ethernet adapter, typically found in + * no-name packaging. + * USB device strings are: + * 1: Manufacturer: USBLINK + * 2: Product: HG20F9 USB2.0 + * 3: Serial: 000003 + * Appears to be compatible with Asix 88772B. + */ +static const struct driver_info hg20f9_info = { + .description = "HG20F9 USB 2.0 Ethernet", + .bind = ax88772_bind, + .unbind = ax88772_unbind, + .status = asix_status, + .link_reset = ax88772_link_reset, + .reset = ax88772_reset, + .flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR | + FLAG_MULTI_PACKET, + .rx_fixup = asix_rx_fixup_common, + .tx_fixup = asix_tx_fixup, + .data = FLAG_EEPROM_MAC, +}; + extern const struct driver_info ax88172a_info; static const struct usb_device_id products [] = { @@ -1063,6 +1086,14 @@ static const struct usb_device_id products [] = { /* ASIX 88172a demo board */ USB_DEVICE(0x0b95, 0x172a), .driver_info = (unsigned long) &ax88172a_info, +}, { + /* + * USBLINK HG20F9 "USB 2.0 LAN" + * Appears to have gazumped Linksys's manufacturer ID but + * doesn't (yet) conflict with any known Linksys product. + */ + USB_DEVICE(0x066b, 0x20f9), + .driver_info = (unsigned long) &hg20f9_info, }, { }, // END }; -- cgit v1.1 From a3d63cadbad97671d740a9698acc2c95d1ca6e79 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 22 Feb 2013 21:09:17 +0100 Subject: ath9k: fix RSSI dummy marker value RSSI is being stored internally as s8 in several places. The indication of an unset RSSI value, ATH_RSSI_DUMMY_MARKER, was supposed to have been set to 127, but ended up being set to 0x127 because of a code cleanup mistake. This could lead to invalid signal strength values in a few places. Signed-off-by: Felix Fietkau Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/common.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h index 5f845be..050ca4a 100644 --- a/drivers/net/wireless/ath/ath9k/common.h +++ b/drivers/net/wireless/ath/ath9k/common.h @@ -27,7 +27,7 @@ #define WME_MAX_BA WME_BA_BMP_SIZE #define ATH_TID_MAX_BUFS (2 * WME_MAX_BA) -#define ATH_RSSI_DUMMY_MARKER 0x127 +#define ATH_RSSI_DUMMY_MARKER 127 #define ATH_RSSI_LPF_LEN 10 #define RSSI_LPF_THRESHOLD -20 #define ATH_RSSI_EP_MULTIPLIER (1<<7) -- cgit v1.1 From 838f427955dcfd16858b0108ce29029da0d56a4e Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 22 Feb 2013 21:37:25 +0100 Subject: ath9k_htc: fix signal strength handling issues The ath9k commit 2ef167557c0a26c88162ecffb017bfcc51eb7b29 (ath9k: fix signal strength reporting issues) fixed an issue where the reported per-frame signal strength reported to mac80211 was being overwritten with an internal average. The same issue is also present in ath9k_htc. In addition to preventing the driver from overwriting the value, this commit also ensures that the internal average (which is used for ANI) only tracks beacons of the AP that we're connected to. Signed-off-by: Felix Fietkau Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/htc.h | 1 + drivers/net/wireless/ath/ath9k/htc_drv_txrx.c | 18 +++++++++++------- 2 files changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h index 96bfb180..d3b099d 100644 --- a/drivers/net/wireless/ath/ath9k/htc.h +++ b/drivers/net/wireless/ath/ath9k/htc.h @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c index b6a5a08..8788621 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_txrx.c @@ -1067,15 +1067,19 @@ static bool ath9k_rx_prepare(struct ath9k_htc_priv *priv, last_rssi = priv->rx.last_rssi; - if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER)) - rxbuf->rxstatus.rs_rssi = ATH_EP_RND(last_rssi, - ATH_RSSI_EP_MULTIPLIER); + if (ieee80211_is_beacon(hdr->frame_control) && + !is_zero_ether_addr(common->curbssid) && + ether_addr_equal(hdr->addr3, common->curbssid)) { + s8 rssi = rxbuf->rxstatus.rs_rssi; - if (rxbuf->rxstatus.rs_rssi < 0) - rxbuf->rxstatus.rs_rssi = 0; + if (likely(last_rssi != ATH_RSSI_DUMMY_MARKER)) + rssi = ATH_EP_RND(last_rssi, ATH_RSSI_EP_MULTIPLIER); - if (ieee80211_is_beacon(fc)) - priv->ah->stats.avgbrssi = rxbuf->rxstatus.rs_rssi; + if (rssi < 0) + rssi = 0; + + priv->ah->stats.avgbrssi = rssi; + } rx_status->mactime = be64_to_cpu(rxbuf->rxstatus.rs_tstamp); rx_status->band = hw->conf.channel->band; -- cgit v1.1 From f45dd363bee071a62e32398a0ae4a0214b8029eb Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 23 Feb 2013 23:30:22 +0100 Subject: bcma: init spin lock This spin lock was not initialized. Signed-off-by: Hauke Mehrtens Signed-off-by: John W. Linville --- drivers/bcma/driver_pci_host.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/bcma/driver_pci_host.c b/drivers/bcma/driver_pci_host.c index 221f8bb..25de387 100644 --- a/drivers/bcma/driver_pci_host.c +++ b/drivers/bcma/driver_pci_host.c @@ -405,6 +405,8 @@ void __devinit bcma_core_pci_hostmode_init(struct bcma_drv_pci *pc) return; } + spin_lock_init(&pc_host->cfgspace_lock); + pc->host_controller = pc_host; pc_host->pci_controller.io_resource = &pc_host->io_resource; pc_host->pci_controller.mem_resource = &pc_host->mem_resource; -- cgit v1.1 From 3412f2f086ea7531378fabe756bd4a1109994ae6 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 25 Feb 2013 20:51:07 +0100 Subject: ath9k_hw: improve reset reliability after errors On many different chips, important aspects of the MAC state are not fully cleared by a warm reset. This can show up as tx/rx hangs, those annoying "DMA failed to stop in 10 ms..." messages or other quirks. On AR933x, the chip can occasionally get stuck in a way that only a driver unload/reload or a reboot would bring it back to life. With this patch, a full reset is issued when bringing the chip out of FULL-SLEEP state (after idle), or if either Rx or Tx was not shut down properly. This makes the DMA related error messages disappear completely in my tests on AR933x, and the chip does not get stuck anymore. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/hw.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 42cf3c7..7b485e4 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1463,7 +1463,9 @@ static bool ath9k_hw_chip_reset(struct ath_hw *ah, reset_type = ATH9K_RESET_POWER_ON; else reset_type = ATH9K_RESET_COLD; - } + } else if (ah->chip_fullsleep || REG_READ(ah, AR_Q_TXE) || + (REG_READ(ah, AR_CR) & AR_CR_RXE)) + reset_type = ATH9K_RESET_COLD; if (!ath9k_hw_set_reset_reg(ah, reset_type)) return false; -- cgit v1.1 From 3e7a4ff7c5b6423ddb644df9c41b8b6d2fb79d30 Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Mon, 25 Feb 2013 16:01:34 -0800 Subject: mwifiex: correct sleep delay counter Maximum delay for waking up card is 50 ms. Because of typo in counter, this delay goes to 500ms. This patch fixes the bug. Cc: # 3.2+ Signed-off-by: Avinash Patil Signed-off-by: Amitkumar Karwar Signed-off-by: Yogesh Ashok Powar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/pcie.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 35c7972..5c395e2 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -302,7 +302,7 @@ static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) i++; usleep_range(10, 20); /* 50ms max wait */ - if (i == 50000) + if (i == 5000) break; } -- cgit v1.1 From 6ef9e2f6d12ce9e2120916804d2ddd46b954a70b Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Tue, 26 Feb 2013 16:09:55 +0100 Subject: rt2x00: error in configurations with mesh support disabled If CONFIG_MAC80211_MESH is not set, cfg80211 will now allow advertising interface combinations with NL80211_IFTYPE_MESH_POINT present. Add appropriate ifdefs to avoid running into errors. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau Acked-by: Gertjan van Wingerde Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00dev.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00dev.c b/drivers/net/wireless/rt2x00/rt2x00dev.c index 1031db6..189744d 100644 --- a/drivers/net/wireless/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/rt2x00/rt2x00dev.c @@ -1236,8 +1236,10 @@ static inline void rt2x00lib_set_if_combinations(struct rt2x00_dev *rt2x00dev) */ if_limit = &rt2x00dev->if_limits_ap; if_limit->max = rt2x00dev->ops->max_ap_intf; - if_limit->types = BIT(NL80211_IFTYPE_AP) | - BIT(NL80211_IFTYPE_MESH_POINT); + if_limit->types = BIT(NL80211_IFTYPE_AP); +#ifdef CONFIG_MAC80211_MESH + if_limit->types |= BIT(NL80211_IFTYPE_MESH_POINT); +#endif /* * Build up AP interface combinations structure. @@ -1309,7 +1311,9 @@ int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev) rt2x00dev->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP) | +#ifdef CONFIG_MAC80211_MESH BIT(NL80211_IFTYPE_MESH_POINT) | +#endif BIT(NL80211_IFTYPE_WDS); rt2x00dev->hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN; -- cgit v1.1 From 466026989f112e0546ca39ab00a759af82dbe83a Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Tue, 26 Feb 2013 12:58:35 -0800 Subject: libertas: fix crash for SD8688 For SD8688, FUNC_INIT command is queued before fw_ready flag is set. This causes the following crash as lbs_thread blocks any command if fw_ready is not set. [ 209.338953] [] (__schedule+0x610/0x764) from [] (__lbs_cmd+0xb8/0x130 [libertas]) [ 209.348340] [] (__lbs_cmd+0xb8/0x130 [libertas]) from [] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio]) [ 209.360136] [] (if_sdio_finish_power_on+0xec/0x1b0 [libertas_sdio]) from [] (if_sdio_power_on+0x18c/0x20c [libertas_sdio]) [ 209.373052] [] (if_sdio_power_on+0x18c/0x20c [libertas_sdio]) from [] (if_sdio_probe+0x200/0x31c [libertas_sdio]) [ 209.385316] [] (if_sdio_probe+0x200/0x31c [libertas_sdio]) from [] (sdio_bus_probe+0x94/0xfc [mmc_core]) [ 209.396748] [] (sdio_bus_probe+0x94/0xfc [mmc_core]) from [] (driver_probe_device+0x12c/0x348) [ 209.407214] [] (driver_probe_device+0x12c/0x348) from [] (__driver_attach+0x78/0x9c) [ 209.416798] [] (__driver_attach+0x78/0x9c) from [] (bus_for_each_dev+0x50/0x88) [ 209.425946] [] (bus_for_each_dev+0x50/0x88) from [] (bus_add_driver+0x108/0x268) [ 209.435180] [] (bus_add_driver+0x108/0x268) from [] (driver_register+0xa4/0x134) [ 209.444426] [] (driver_register+0xa4/0x134) from [] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) [ 209.455339] [] (if_sdio_init_module+0x1c/0x3c [libertas_sdio]) from [] (do_one_initcall+0x98/0x174) [ 209.466236] [] (do_one_initcall+0x98/0x174) from [] (load_module+0x1c5c/0x1f80) [ 209.475390] [] (load_module+0x1c5c/0x1f80) from [] (sys_init_module+0x104/0x128) [ 209.484632] [] (sys_init_module+0x104/0x128) from [] (ret_fast_syscall+0x0/0x38) Fix it by setting fw_ready flag prior to queuing FUNC_INIT command. Cc: # 3.5+ Reported-by: Lubomir Rintel Tested-by: Lubomir Rintel Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/if_sdio.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c index 739309e..4557833 100644 --- a/drivers/net/wireless/libertas/if_sdio.c +++ b/drivers/net/wireless/libertas/if_sdio.c @@ -825,6 +825,11 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card) sdio_release_host(func); + /* Set fw_ready before queuing any commands so that + * lbs_thread won't block from sending them to firmware. + */ + priv->fw_ready = 1; + /* * FUNC_INIT is required for SD8688 WLAN/BT multiple functions */ @@ -839,7 +844,6 @@ static void if_sdio_finish_power_on(struct if_sdio_card *card) netdev_alert(priv->dev, "CMD_FUNC_INIT cmd failed\n"); } - priv->fw_ready = 1; wake_up(&card->pwron_waitq); if (!card->started) { -- cgit v1.1 From 1111eae90fb64a9d9ed133e410712f1e34fdce4a Mon Sep 17 00:00:00 2001 From: Tyler Hicks Date: Wed, 27 Feb 2013 11:37:48 -0800 Subject: eCryptfs: Fix redundant error check on ecryptfs_find_daemon_by_euid() It is sufficient to check the return code of ecryptfs_find_daemon_by_euid(). If it returns 0, it always sets the daemon pointer to point to a valid ecryptfs_daemon. Signed-off-by: Tyler Hicks Reported-by: Kees Cook --- fs/ecryptfs/messaging.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ecryptfs/messaging.c b/fs/ecryptfs/messaging.c index d5c7297..474051b 100644 --- a/fs/ecryptfs/messaging.c +++ b/fs/ecryptfs/messaging.c @@ -283,7 +283,7 @@ ecryptfs_send_message_locked(char *data, int data_len, u8 msg_type, int rc; rc = ecryptfs_find_daemon_by_euid(&daemon); - if (rc || !daemon) { + if (rc) { rc = -ENOTCONN; goto out; } -- cgit v1.1 From 726bc6b092da4c093eb74d13c07184b18c1af0f1 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 27 Feb 2013 10:57:31 +0000 Subject: net/sctp: Validate parameter size for SCTP_GET_ASSOC_STATS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Building sctp may fail with: In function ‘copy_from_user’, inlined from ‘sctp_getsockopt_assoc_stats’ at net/sctp/socket.c:5656:20: arch/x86/include/asm/uaccess_32.h:211:26: error: call to ‘copy_from_user_overflow’ declared with attribute error: copy_from_user() buffer size is not provably correct if built with W=1 due to a missing parameter size validation before the call to copy_from_user. Signed-off-by: Guenter Roeck Acked-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/socket.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/sctp/socket.c b/net/sctp/socket.c index cedd9bf..9ef5c73 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -5653,6 +5653,9 @@ static int sctp_getsockopt_assoc_stats(struct sock *sk, int len, if (len < sizeof(sctp_assoc_t)) return -EINVAL; + /* Allow the struct to grow and fill in as much as possible */ + len = min_t(size_t, len, sizeof(sas)); + if (copy_from_user(&sas, optval, len)) return -EFAULT; @@ -5686,9 +5689,6 @@ static int sctp_getsockopt_assoc_stats(struct sock *sk, int len, /* Mark beginning of a new observation period */ asoc->stats.max_obs_rto = asoc->rto_min; - /* Allow the struct to grow and fill in as much as possible */ - len = min_t(size_t, len, sizeof(sas)); - if (put_user(len, optlen)) return -EFAULT; -- cgit v1.1 From 51acbcec6c42b24482bac18e42befc822524535d Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 28 Feb 2013 09:08:34 +1100 Subject: md: remove CONFIG_MULTICORE_RAID456 This doesn't seem to actually help and we have an alternate multi-threading approach waiting in the wings, so just get rid of this config option and associated code. As a bonus, we remove one use of CONFIG_EXPERIMENTAL Cc: Dan Williams Cc: Kees Cook Signed-off-by: NeilBrown --- drivers/md/Kconfig | 11 ----------- drivers/md/raid5.c | 38 +------------------------------------- 2 files changed, 1 insertion(+), 48 deletions(-) diff --git a/drivers/md/Kconfig b/drivers/md/Kconfig index 91a02ee..9a10313 100644 --- a/drivers/md/Kconfig +++ b/drivers/md/Kconfig @@ -154,17 +154,6 @@ config MD_RAID456 If unsure, say Y. -config MULTICORE_RAID456 - bool "RAID-4/RAID-5/RAID-6 Multicore processing (EXPERIMENTAL)" - depends on MD_RAID456 - depends on SMP - depends on EXPERIMENTAL - ---help--- - Enable the raid456 module to dispatch per-stripe raid operations to a - thread pool. - - If unsure, say N. - config MD_MULTIPATH tristate "Multipath I/O support" depends on BLK_DEV_MD diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 19d77a0..35031c8 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -1406,7 +1406,7 @@ static void ops_run_check_pq(struct stripe_head *sh, struct raid5_percpu *percpu &sh->ops.zero_sum_result, percpu->spare_page, &submit); } -static void __raid_run_ops(struct stripe_head *sh, unsigned long ops_request) +static void raid_run_ops(struct stripe_head *sh, unsigned long ops_request) { int overlap_clear = 0, i, disks = sh->disks; struct dma_async_tx_descriptor *tx = NULL; @@ -1471,36 +1471,6 @@ static void __raid_run_ops(struct stripe_head *sh, unsigned long ops_request) put_cpu(); } -#ifdef CONFIG_MULTICORE_RAID456 -static void async_run_ops(void *param, async_cookie_t cookie) -{ - struct stripe_head *sh = param; - unsigned long ops_request = sh->ops.request; - - clear_bit_unlock(STRIPE_OPS_REQ_PENDING, &sh->state); - wake_up(&sh->ops.wait_for_ops); - - __raid_run_ops(sh, ops_request); - release_stripe(sh); -} - -static void raid_run_ops(struct stripe_head *sh, unsigned long ops_request) -{ - /* since handle_stripe can be called outside of raid5d context - * we need to ensure sh->ops.request is de-staged before another - * request arrives - */ - wait_event(sh->ops.wait_for_ops, - !test_and_set_bit_lock(STRIPE_OPS_REQ_PENDING, &sh->state)); - sh->ops.request = ops_request; - - atomic_inc(&sh->count); - async_schedule(async_run_ops, sh); -} -#else -#define raid_run_ops __raid_run_ops -#endif - static int grow_one_stripe(struct r5conf *conf) { struct stripe_head *sh; @@ -1509,9 +1479,6 @@ static int grow_one_stripe(struct r5conf *conf) return 0; sh->raid_conf = conf; - #ifdef CONFIG_MULTICORE_RAID456 - init_waitqueue_head(&sh->ops.wait_for_ops); - #endif spin_lock_init(&sh->stripe_lock); @@ -1630,9 +1597,6 @@ static int resize_stripes(struct r5conf *conf, int newsize) break; nsh->raid_conf = conf; - #ifdef CONFIG_MULTICORE_RAID456 - init_waitqueue_head(&nsh->ops.wait_for_ops); - #endif spin_lock_init(&nsh->stripe_lock); list_add(&nsh->lru, &newstripes); -- cgit v1.1 From f3378b48705154b9089affb2d2e939622aea68f1 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 28 Feb 2013 11:59:03 +1100 Subject: md: expedite metadata update when switching read-auto -> active If something has failed while the array was read-auto, then when we switch to 'active' we need to update the metadata. This will happen anyway but it is good to expedite it, and also to ensure any failed device has been released by the underlying device before we try to action the ioctl which caused us to switch to 'active' mode. Reported-by: Joe Lawrence Signed-off-by: NeilBrown --- drivers/md/md.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index f363135..fcb878f 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -6532,7 +6532,17 @@ static int md_ioctl(struct block_device *bdev, fmode_t mode, mddev->ro = 0; sysfs_notify_dirent_safe(mddev->sysfs_state); set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); - md_wakeup_thread(mddev->thread); + /* mddev_unlock will wake thread */ + /* If a device failed while we were read-only, we + * need to make sure the metadata is updated now. + */ + if (test_bit(MD_CHANGE_DEVS, &mddev->flags)) { + mddev_unlock(mddev); + wait_event(mddev->sb_wait, + !test_bit(MD_CHANGE_DEVS, &mddev->flags) && + !test_bit(MD_CHANGE_PENDING, &mddev->flags)); + mddev_lock(mddev); + } } else { err = -EROFS; goto abort_unlock; -- cgit v1.1 From db05021d49a994ee40a9735d9c3cb0060c9babb8 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 27 Feb 2013 21:48:09 -0500 Subject: ftrace: Update the kconfig for DYNAMIC_FTRACE The prompt to enable DYNAMIC_FTRACE (the ability to nop and enable function tracing at run time) had a confusing statement: "enable/disable ftrace tracepoints dynamically" This was written before tracepoints were added to the kernel, but now that tracepoints have been added, this is very confusing and has confused people enough to give wrong information during presentations. Not only that, I looked at the help text, and it still references that dreaded daemon that use to wake up once a second to update the nop locations and brick NICs, that hasn't been around for over five years. Time to bring the text up to the current decade. Cc: stable@vger.kernel.org Reported-by: Ezequiel Garcia Signed-off-by: Steven Rostedt --- kernel/trace/Kconfig | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 3656756..b516a8e 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -429,24 +429,28 @@ config PROBE_EVENTS def_bool n config DYNAMIC_FTRACE - bool "enable/disable ftrace tracepoints dynamically" + bool "enable/disable function tracing dynamically" depends on FUNCTION_TRACER depends on HAVE_DYNAMIC_FTRACE default y help - This option will modify all the calls to ftrace dynamically - (will patch them out of the binary image and replace them - with a No-Op instruction) as they are called. A table is - created to dynamically enable them again. + This option will modify all the calls to function tracing + dynamically (will patch them out of the binary image and + replace them with a No-Op instruction) on boot up. During + compile time, a table is made of all the locations that ftrace + can function trace, and this table is linked into the kernel + image. When this is enabled, functions can be individually + enabled, and the functions not enabled will not affect + performance of the system. + + See the files in /sys/kernel/debug/tracing: + available_filter_functions + set_ftrace_filter + set_ftrace_notrace This way a CONFIG_FUNCTION_TRACER kernel is slightly larger, but otherwise has native performance as long as no tracing is active. - The changes to the code are done by a kernel thread that - wakes up once a second and checks to see if any ftrace calls - were made. If so, it runs stop_machine (stops all CPUS) - and modifies the code to jump over the call to ftrace. - config DYNAMIC_FTRACE_WITH_REGS def_bool y depends on DYNAMIC_FTRACE -- cgit v1.1 From feda30271e5455394c57e35eba66db88d1b15077 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 28 Feb 2013 09:59:22 +0100 Subject: mac80211: really fix monitor mode channel reporting After Felix's patch it was still broken in case you used more than just a single monitor interface. Fix it better now. Reported-by: Sujith Manoharan Tested-by: Sujith Manoharan Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 808f5fc..fb30681 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -3290,14 +3290,19 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy, int ret = -ENODATA; rcu_read_lock(); - if (local->use_chanctx) { - chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); - if (chanctx_conf) { - *chandef = chanctx_conf->def; - ret = 0; - } - } else if (local->open_count == local->monitors) { - *chandef = local->monitor_chandef; + chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf); + if (chanctx_conf) { + *chandef = chanctx_conf->def; + ret = 0; + } else if (local->open_count > 0 && + local->open_count == local->monitors && + sdata->vif.type == NL80211_IFTYPE_MONITOR) { + if (local->use_chanctx) + *chandef = local->monitor_chandef; + else + cfg80211_chandef_create(chandef, + local->_oper_channel, + local->_oper_channel_type); ret = 0; } rcu_read_unlock(); -- cgit v1.1 From 98891754ea9453de4db9111c91b20122ca330101 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 26 Feb 2013 11:28:19 +0100 Subject: iwlwifi: don't map complete commands bidirectionally The reason we mapped them bidirectionally was that not doing so had caused IOMMU exceptions, due to the fact that the HW writes back into the command. Now that the first part of the command including the write-back part is always in the first buffer, we don't need to map the remaining buffer(s) bidi and can get rid of the special-casing for commands. This is a requisite patch for another one to fix DMA mapping. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/pcie/tx.c | 33 +++++++++++---------------------- 1 file changed, 11 insertions(+), 22 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 8b625a7..975492f 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -367,8 +367,8 @@ static inline u8 iwl_pcie_tfd_get_num_tbs(struct iwl_tfd *tfd) } static void iwl_pcie_tfd_unmap(struct iwl_trans *trans, - struct iwl_cmd_meta *meta, struct iwl_tfd *tfd, - enum dma_data_direction dma_dir) + struct iwl_cmd_meta *meta, + struct iwl_tfd *tfd) { int i; int num_tbs; @@ -392,7 +392,8 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans, /* Unmap chunks, if any. */ for (i = 1; i < num_tbs; i++) dma_unmap_single(trans->dev, iwl_pcie_tfd_tb_get_addr(tfd, i), - iwl_pcie_tfd_tb_get_len(tfd, i), dma_dir); + iwl_pcie_tfd_tb_get_len(tfd, i), + DMA_TO_DEVICE); tfd->num_tbs = 0; } @@ -406,8 +407,7 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans, * Does NOT advance any TFD circular buffer read/write indexes * Does NOT free the TFD itself (which is within circular buffer) */ -static void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq, - enum dma_data_direction dma_dir) +static void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq) { struct iwl_tfd *tfd_tmp = txq->tfds; @@ -418,8 +418,7 @@ static void iwl_pcie_txq_free_tfd(struct iwl_trans *trans, struct iwl_txq *txq, lockdep_assert_held(&txq->lock); /* We have only q->n_window txq->entries, but we use q->n_bd tfds */ - iwl_pcie_tfd_unmap(trans, &txq->entries[idx].meta, &tfd_tmp[rd_ptr], - dma_dir); + iwl_pcie_tfd_unmap(trans, &txq->entries[idx].meta, &tfd_tmp[rd_ptr]); /* free SKB */ if (txq->entries) { @@ -565,22 +564,13 @@ static void iwl_pcie_txq_unmap(struct iwl_trans *trans, int txq_id) struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); struct iwl_txq *txq = &trans_pcie->txq[txq_id]; struct iwl_queue *q = &txq->q; - enum dma_data_direction dma_dir; if (!q->n_bd) return; - /* In the command queue, all the TBs are mapped as BIDI - * so unmap them as such. - */ - if (txq_id == trans_pcie->cmd_queue) - dma_dir = DMA_BIDIRECTIONAL; - else - dma_dir = DMA_TO_DEVICE; - spin_lock_bh(&txq->lock); while (q->write_ptr != q->read_ptr) { - iwl_pcie_txq_free_tfd(trans, txq, dma_dir); + iwl_pcie_txq_free_tfd(trans, txq); q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd); } spin_unlock_bh(&txq->lock); @@ -962,7 +952,7 @@ void iwl_trans_pcie_reclaim(struct iwl_trans *trans, int txq_id, int ssn, iwl_pcie_txq_inval_byte_cnt_tbl(trans, txq); - iwl_pcie_txq_free_tfd(trans, txq, DMA_TO_DEVICE); + iwl_pcie_txq_free_tfd(trans, txq); } iwl_pcie_txq_progress(trans_pcie, txq); @@ -1340,11 +1330,10 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, if (cmd->dataflags[i] & IWL_HCMD_DFL_DUP) data = dup_buf; phys_addr = dma_map_single(trans->dev, (void *)data, - cmdlen[i], DMA_BIDIRECTIONAL); + cmdlen[i], DMA_TO_DEVICE); if (dma_mapping_error(trans->dev, phys_addr)) { iwl_pcie_tfd_unmap(trans, out_meta, - &txq->tfds[q->write_ptr], - DMA_BIDIRECTIONAL); + &txq->tfds[q->write_ptr]); idx = -ENOMEM; goto out; } @@ -1418,7 +1407,7 @@ void iwl_pcie_hcmd_complete(struct iwl_trans *trans, cmd = txq->entries[cmd_index].cmd; meta = &txq->entries[cmd_index].meta; - iwl_pcie_tfd_unmap(trans, meta, &txq->tfds[index], DMA_BIDIRECTIONAL); + iwl_pcie_tfd_unmap(trans, meta, &txq->tfds[index]); /* Input error checking is done when commands are added to queue. */ if (meta->flags & CMD_WANT_SKB) { -- cgit v1.1 From 1afbfb6041fb8f639e742620ad933c347e14ba2c Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 26 Feb 2013 11:32:26 +0100 Subject: iwlwifi: rename IWL_MAX_CMD_TFDS to IWL_MAX_CMD_TBS_PER_TFD The IWL_MAX_CMD_TFDS name for this constant is wrong, the constant really indicates how many TBs we can use in the driver for a single command TFD, rename the constant and also add a comment explaining it. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/iwl-devtrace.h | 2 +- drivers/net/wireless/iwlwifi/iwl-trans.h | 12 ++++++++---- drivers/net/wireless/iwlwifi/pcie/tx.c | 12 ++++++------ 3 files changed, 15 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-devtrace.h b/drivers/net/wireless/iwlwifi/iwl-devtrace.h index 10f0179..81aa91f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-devtrace.h +++ b/drivers/net/wireless/iwlwifi/iwl-devtrace.h @@ -363,7 +363,7 @@ TRACE_EVENT(iwlwifi_dev_hcmd, __entry->flags = cmd->flags; memcpy(__get_dynamic_array(hcmd), hdr, sizeof(*hdr)); - for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { + for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { if (!cmd->len[i]) continue; memcpy((u8 *)__get_dynamic_array(hcmd) + offset, diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 8c7bec6..058947f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -217,7 +217,11 @@ struct iwl_device_cmd { #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd)) -#define IWL_MAX_CMD_TFDS 2 +/* + * number of transfer buffers (fragments) per transmit frame descriptor; + * this is just the driver's idea, the hardware supports 20 + */ +#define IWL_MAX_CMD_TBS_PER_TFD 2 /** * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command @@ -254,15 +258,15 @@ enum iwl_hcmd_dataflag { * @id: id of the host command */ struct iwl_host_cmd { - const void *data[IWL_MAX_CMD_TFDS]; + const void *data[IWL_MAX_CMD_TBS_PER_TFD]; struct iwl_rx_packet *resp_pkt; unsigned long _rx_page_addr; u32 _rx_page_order; int handler_status; u32 flags; - u16 len[IWL_MAX_CMD_TFDS]; - u8 dataflags[IWL_MAX_CMD_TFDS]; + u16 len[IWL_MAX_CMD_TBS_PER_TFD]; + u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD]; u8 id; }; diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 975492f..ff80a7e 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -1146,16 +1146,16 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, bool had_nocopy = false; int i; u32 cmd_pos; - const u8 *cmddata[IWL_MAX_CMD_TFDS]; - u16 cmdlen[IWL_MAX_CMD_TFDS]; + const u8 *cmddata[IWL_MAX_CMD_TBS_PER_TFD]; + u16 cmdlen[IWL_MAX_CMD_TBS_PER_TFD]; copy_size = sizeof(out_cmd->hdr); cmd_size = sizeof(out_cmd->hdr); /* need one for the header if the first is NOCOPY */ - BUILD_BUG_ON(IWL_MAX_CMD_TFDS > IWL_NUM_OF_TBS - 1); + BUILD_BUG_ON(IWL_MAX_CMD_TBS_PER_TFD > IWL_NUM_OF_TBS - 1); - for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { + for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { cmddata[i] = cmd->data[i]; cmdlen[i] = cmd->len[i]; @@ -1250,7 +1250,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, /* and copy the data that needs to be copied */ cmd_pos = offsetof(struct iwl_device_cmd, payload); copy_size = sizeof(out_cmd->hdr); - for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { + for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { int copy = 0; if (!cmd->len) @@ -1319,7 +1319,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, iwl_pcie_txq_build_tfd(trans, txq, phys_addr, copy_size, 1); /* map the remaining (adjusted) nocopy/dup fragments */ - for (i = 0; i < IWL_MAX_CMD_TFDS; i++) { + for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { const void *data = cmddata[i]; if (!cmdlen[i]) -- cgit v1.1 From aed7d9ac1836defe033b561f4306e39014ac56fd Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Wed, 20 Feb 2013 11:33:00 +0200 Subject: iwlwifi: disable 8K A-MSDU by default Supporting 8K A-MSDU means that we need to allocate order 1 pages for every Rx packet. Even when there is no traffic. This adds stress on the memory manager. The handling of compound pages is also less trivial for the memory manager and not using them will make the allocation code run faster although I didn't really measure. Eric also pointed out that having huge buffers with little data in them is not very nice towards the TCP stack since the truesize of the skb is huge. This doesn't allow TCP to have a big Rx window. See https://patchwork.kernel.org/patch/2167711/ for details. Note that very few vendors will actually send A-MSDU. Disable this feature by default. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/iwl-drv.c | 3 +-- drivers/net/wireless/iwlwifi/iwl-modparams.h | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-drv.c b/drivers/net/wireless/iwlwifi/iwl-drv.c index 6f228bb..fbfd2d1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-drv.c +++ b/drivers/net/wireless/iwlwifi/iwl-drv.c @@ -1102,7 +1102,6 @@ void iwl_drv_stop(struct iwl_drv *drv) /* shared module parameters */ struct iwl_mod_params iwlwifi_mod_params = { - .amsdu_size_8K = 1, .restart_fw = 1, .plcp_check = true, .bt_coex_active = true, @@ -1207,7 +1206,7 @@ MODULE_PARM_DESC(11n_disable, "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX"); module_param_named(amsdu_size_8K, iwlwifi_mod_params.amsdu_size_8K, int, S_IRUGO); -MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size"); +MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size (default 0)"); module_param_named(fw_restart, iwlwifi_mod_params.restart_fw, int, S_IRUGO); MODULE_PARM_DESC(fw_restart, "restart firmware in case of error"); diff --git a/drivers/net/wireless/iwlwifi/iwl-modparams.h b/drivers/net/wireless/iwlwifi/iwl-modparams.h index e5e3a79..2c2a729 100644 --- a/drivers/net/wireless/iwlwifi/iwl-modparams.h +++ b/drivers/net/wireless/iwlwifi/iwl-modparams.h @@ -91,7 +91,7 @@ enum iwl_power_level { * @sw_crypto: using hardware encryption, default = 0 * @disable_11n: disable 11n capabilities, default = 0, * use IWL_DISABLE_HT_* constants - * @amsdu_size_8K: enable 8K amsdu size, default = 1 + * @amsdu_size_8K: enable 8K amsdu size, default = 0 * @restart_fw: restart firmware, default = 1 * @plcp_check: enable plcp health check, default = true * @wd_disable: enable stuck queue check, default = 0 -- cgit v1.1 From 38c0f334b359953f010e9b921e0b55278d3918f7 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 27 Feb 2013 13:18:50 +0100 Subject: iwlwifi: use coherent DMA memory for command header Recently in commit 8a964f44e01ad3bbc208c3e80d931ba91b9ea786 ("iwlwifi: always copy first 16 bytes of commands") we fixed the problem that the hardware writes back to the command and that could overwrite parts of the data that was still needed and would thus be corrupted. Investigating this problem more closely we found that this write-back isn't really ordered very well with respect to other DMA traffic. Therefore, it sometimes happened that the write-back occurred after unmapping the command again which is clearly an issue and could corrupt the next allocation that goes to that spot, or (better) cause IOMMU faults. To fix this, allocate coherent memory for the first 16 bytes of each command, containing the write-back part, and use it for all queues. All the dynamic DMA mappings only need to be TO_DEVICE then. This ensures that even when the write-back happens "too late" it can't hit memory that has been freed or a mapping that doesn't exist any more. Since now the actual command is no longer modified, we can also remove CMD_WANT_HCMD and get rid of the DMA sync that was necessary to update the scratch pointer. Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/dvm/sta.c | 2 +- drivers/net/wireless/iwlwifi/iwl-trans.h | 8 +- drivers/net/wireless/iwlwifi/pcie/internal.h | 34 +++-- drivers/net/wireless/iwlwifi/pcie/rx.c | 14 +- drivers/net/wireless/iwlwifi/pcie/tx.c | 221 +++++++++++++-------------- 5 files changed, 137 insertions(+), 142 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/dvm/sta.c b/drivers/net/wireless/iwlwifi/dvm/sta.c index 94ef338..b775769 100644 --- a/drivers/net/wireless/iwlwifi/dvm/sta.c +++ b/drivers/net/wireless/iwlwifi/dvm/sta.c @@ -151,7 +151,7 @@ int iwl_send_add_sta(struct iwl_priv *priv, sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); if (!(flags & CMD_ASYNC)) { - cmd.flags |= CMD_WANT_SKB | CMD_WANT_HCMD; + cmd.flags |= CMD_WANT_SKB; might_sleep(); } diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 058947f..0cac2b7 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -186,19 +186,13 @@ struct iwl_rx_packet { * @CMD_ASYNC: Return right away and don't want for the response * @CMD_WANT_SKB: valid only with CMD_SYNC. The caller needs the buffer of the * response. The caller needs to call iwl_free_resp when done. - * @CMD_WANT_HCMD: The caller needs to get the HCMD that was sent in the - * response handler. Chunks flagged by %IWL_HCMD_DFL_NOCOPY won't be - * copied. The pointer passed to the response handler is in the transport - * ownership and don't need to be freed by the op_mode. This also means - * that the pointer is invalidated after the op_mode's handler returns. * @CMD_ON_DEMAND: This command is sent by the test mode pipe. */ enum CMD_MODE { CMD_SYNC = 0, CMD_ASYNC = BIT(0), CMD_WANT_SKB = BIT(1), - CMD_WANT_HCMD = BIT(2), - CMD_ON_DEMAND = BIT(3), + CMD_ON_DEMAND = BIT(2), }; #define DEF_CMD_PAYLOAD_SIZE 320 diff --git a/drivers/net/wireless/iwlwifi/pcie/internal.h b/drivers/net/wireless/iwlwifi/pcie/internal.h index 3d62e80..148843e 100644 --- a/drivers/net/wireless/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/iwlwifi/pcie/internal.h @@ -137,10 +137,6 @@ static inline int iwl_queue_dec_wrap(int index, int n_bd) struct iwl_cmd_meta { /* only for SYNC commands, iff the reply skb is wanted */ struct iwl_host_cmd *source; - - DEFINE_DMA_UNMAP_ADDR(mapping); - DEFINE_DMA_UNMAP_LEN(len); - u32 flags; }; @@ -185,25 +181,36 @@ struct iwl_queue { /* * The FH will write back to the first TB only, so we need * to copy some data into the buffer regardless of whether - * it should be mapped or not. This indicates how much to - * copy, even for HCMDs it must be big enough to fit the - * DRAM scratch from the TX cmd, at least 16 bytes. + * it should be mapped or not. This indicates how big the + * first TB must be to include the scratch buffer. Since + * the scratch is 4 bytes at offset 12, it's 16 now. If we + * make it bigger then allocations will be bigger and copy + * slower, so that's probably not useful. */ -#define IWL_HCMD_MIN_COPY_SIZE 16 +#define IWL_HCMD_SCRATCHBUF_SIZE 16 struct iwl_pcie_txq_entry { struct iwl_device_cmd *cmd; - struct iwl_device_cmd *copy_cmd; struct sk_buff *skb; /* buffer to free after command completes */ const void *free_buf; struct iwl_cmd_meta meta; }; +struct iwl_pcie_txq_scratch_buf { + struct iwl_cmd_header hdr; + u8 buf[8]; + __le32 scratch; +}; + /** * struct iwl_txq - Tx Queue for DMA * @q: generic Rx/Tx queue descriptor * @tfds: transmit frame descriptors (DMA memory) + * @scratchbufs: start of command headers, including scratch buffers, for + * the writeback -- this is DMA memory and an array holding one buffer + * for each command on the queue + * @scratchbufs_dma: DMA address for the scratchbufs start * @entries: transmit entries (driver state) * @lock: queue lock * @stuck_timer: timer that fires if queue gets stuck @@ -217,6 +224,8 @@ struct iwl_pcie_txq_entry { struct iwl_txq { struct iwl_queue q; struct iwl_tfd *tfds; + struct iwl_pcie_txq_scratch_buf *scratchbufs; + dma_addr_t scratchbufs_dma; struct iwl_pcie_txq_entry *entries; spinlock_t lock; struct timer_list stuck_timer; @@ -225,6 +234,13 @@ struct iwl_txq { u8 active; }; +static inline dma_addr_t +iwl_pcie_get_scratchbuf_dma(struct iwl_txq *txq, int idx) +{ + return txq->scratchbufs_dma + + sizeof(struct iwl_pcie_txq_scratch_buf) * idx; +} + /** * struct iwl_trans_pcie - PCIe transport specific data * @rxq: all the RX queue data diff --git a/drivers/net/wireless/iwlwifi/pcie/rx.c b/drivers/net/wireless/iwlwifi/pcie/rx.c index b0ae06d..567e67a 100644 --- a/drivers/net/wireless/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/iwlwifi/pcie/rx.c @@ -637,22 +637,14 @@ static void iwl_pcie_rx_handle_rb(struct iwl_trans *trans, index = SEQ_TO_INDEX(sequence); cmd_index = get_cmd_index(&txq->q, index); - if (reclaim) { - struct iwl_pcie_txq_entry *ent; - ent = &txq->entries[cmd_index]; - cmd = ent->copy_cmd; - WARN_ON_ONCE(!cmd && ent->meta.flags & CMD_WANT_HCMD); - } else { + if (reclaim) + cmd = txq->entries[cmd_index].cmd; + else cmd = NULL; - } err = iwl_op_mode_rx(trans->op_mode, &rxcb, cmd); if (reclaim) { - /* The original command isn't needed any more */ - kfree(txq->entries[cmd_index].copy_cmd); - txq->entries[cmd_index].copy_cmd = NULL; - /* nor is the duplicated part of the command */ kfree(txq->entries[cmd_index].free_buf); txq->entries[cmd_index].free_buf = NULL; } diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index ff80a7e..8595c16 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -191,12 +191,9 @@ static void iwl_pcie_txq_stuck_timer(unsigned long data) } for (i = q->read_ptr; i != q->write_ptr; - i = iwl_queue_inc_wrap(i, q->n_bd)) { - struct iwl_tx_cmd *tx_cmd = - (struct iwl_tx_cmd *)txq->entries[i].cmd->payload; + i = iwl_queue_inc_wrap(i, q->n_bd)) IWL_ERR(trans, "scratch %d = 0x%08x\n", i, - get_unaligned_le32(&tx_cmd->scratch)); - } + le32_to_cpu(txq->scratchbufs[i].scratch)); iwl_op_mode_nic_error(trans->op_mode); } @@ -382,14 +379,8 @@ static void iwl_pcie_tfd_unmap(struct iwl_trans *trans, return; } - /* Unmap tx_cmd */ - if (num_tbs) - dma_unmap_single(trans->dev, - dma_unmap_addr(meta, mapping), - dma_unmap_len(meta, len), - DMA_BIDIRECTIONAL); + /* first TB is never freed - it's the scratchbuf data */ - /* Unmap chunks, if any. */ for (i = 1; i < num_tbs; i++) dma_unmap_single(trans->dev, iwl_pcie_tfd_tb_get_addr(tfd, i), iwl_pcie_tfd_tb_get_len(tfd, i), @@ -478,6 +469,7 @@ static int iwl_pcie_txq_alloc(struct iwl_trans *trans, { struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); size_t tfd_sz = sizeof(struct iwl_tfd) * TFD_QUEUE_SIZE_MAX; + size_t scratchbuf_sz; int i; if (WARN_ON(txq->entries || txq->tfds)) @@ -513,9 +505,25 @@ static int iwl_pcie_txq_alloc(struct iwl_trans *trans, IWL_ERR(trans, "dma_alloc_coherent(%zd) failed\n", tfd_sz); goto error; } + + BUILD_BUG_ON(IWL_HCMD_SCRATCHBUF_SIZE != sizeof(*txq->scratchbufs)); + BUILD_BUG_ON(offsetof(struct iwl_pcie_txq_scratch_buf, scratch) != + sizeof(struct iwl_cmd_header) + + offsetof(struct iwl_tx_cmd, scratch)); + + scratchbuf_sz = sizeof(*txq->scratchbufs) * slots_num; + + txq->scratchbufs = dma_alloc_coherent(trans->dev, scratchbuf_sz, + &txq->scratchbufs_dma, + GFP_KERNEL); + if (!txq->scratchbufs) + goto err_free_tfds; + txq->q.id = txq_id; return 0; +err_free_tfds: + dma_free_coherent(trans->dev, tfd_sz, txq->tfds, txq->q.dma_addr); error: if (txq->entries && txq_id == trans_pcie->cmd_queue) for (i = 0; i < slots_num; i++) @@ -600,7 +608,6 @@ static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id) if (txq_id == trans_pcie->cmd_queue) for (i = 0; i < txq->q.n_window; i++) { kfree(txq->entries[i].cmd); - kfree(txq->entries[i].copy_cmd); kfree(txq->entries[i].free_buf); } @@ -609,6 +616,10 @@ static void iwl_pcie_txq_free(struct iwl_trans *trans, int txq_id) dma_free_coherent(dev, sizeof(struct iwl_tfd) * txq->q.n_bd, txq->tfds, txq->q.dma_addr); txq->q.dma_addr = 0; + + dma_free_coherent(dev, + sizeof(*txq->scratchbufs) * txq->q.n_window, + txq->scratchbufs, txq->scratchbufs_dma); } kfree(txq->entries); @@ -1142,7 +1153,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, void *dup_buf = NULL; dma_addr_t phys_addr; int idx; - u16 copy_size, cmd_size, dma_size; + u16 copy_size, cmd_size, scratch_size; bool had_nocopy = false; int i; u32 cmd_pos; @@ -1162,9 +1173,9 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, if (!cmd->len[i]) continue; - /* need at least IWL_HCMD_MIN_COPY_SIZE copied */ - if (copy_size < IWL_HCMD_MIN_COPY_SIZE) { - int copy = IWL_HCMD_MIN_COPY_SIZE - copy_size; + /* need at least IWL_HCMD_SCRATCHBUF_SIZE copied */ + if (copy_size < IWL_HCMD_SCRATCHBUF_SIZE) { + int copy = IWL_HCMD_SCRATCHBUF_SIZE - copy_size; if (copy > cmdlen[i]) copy = cmdlen[i]; @@ -1256,9 +1267,9 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, if (!cmd->len) continue; - /* need at least IWL_HCMD_MIN_COPY_SIZE copied */ - if (copy_size < IWL_HCMD_MIN_COPY_SIZE) { - copy = IWL_HCMD_MIN_COPY_SIZE - copy_size; + /* need at least IWL_HCMD_SCRATCHBUF_SIZE copied */ + if (copy_size < IWL_HCMD_SCRATCHBUF_SIZE) { + copy = IWL_HCMD_SCRATCHBUF_SIZE - copy_size; if (copy > cmd->len[i]) copy = cmd->len[i]; @@ -1276,48 +1287,36 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, } } - WARN_ON_ONCE(txq->entries[idx].copy_cmd); - - /* - * since out_cmd will be the source address of the FH, it will write - * the retry count there. So when the user needs to receivce the HCMD - * that corresponds to the response in the response handler, it needs - * to set CMD_WANT_HCMD. - */ - if (cmd->flags & CMD_WANT_HCMD) { - txq->entries[idx].copy_cmd = - kmemdup(out_cmd, cmd_pos, GFP_ATOMIC); - if (unlikely(!txq->entries[idx].copy_cmd)) { - idx = -ENOMEM; - goto out; - } - } - IWL_DEBUG_HC(trans, "Sending command %s (#%x), seq: 0x%04X, %d bytes at %d[%d]:%d\n", get_cmd_string(trans_pcie, out_cmd->hdr.cmd), out_cmd->hdr.cmd, le16_to_cpu(out_cmd->hdr.sequence), cmd_size, q->write_ptr, idx, trans_pcie->cmd_queue); - /* - * If the entire command is smaller than IWL_HCMD_MIN_COPY_SIZE, we must - * still map at least that many bytes for the hardware to write back to. - * We have enough space, so that's not a problem. - */ - dma_size = max_t(u16, copy_size, IWL_HCMD_MIN_COPY_SIZE); + /* start the TFD with the scratchbuf */ + scratch_size = min_t(int, copy_size, IWL_HCMD_SCRATCHBUF_SIZE); + memcpy(&txq->scratchbufs[q->write_ptr], &out_cmd->hdr, scratch_size); + iwl_pcie_txq_build_tfd(trans, txq, + iwl_pcie_get_scratchbuf_dma(txq, q->write_ptr), + scratch_size, 1); + + /* map first command fragment, if any remains */ + if (copy_size > scratch_size) { + phys_addr = dma_map_single(trans->dev, + ((u8 *)&out_cmd->hdr) + scratch_size, + copy_size - scratch_size, + DMA_TO_DEVICE); + if (dma_mapping_error(trans->dev, phys_addr)) { + iwl_pcie_tfd_unmap(trans, out_meta, + &txq->tfds[q->write_ptr]); + idx = -ENOMEM; + goto out; + } - phys_addr = dma_map_single(trans->dev, &out_cmd->hdr, dma_size, - DMA_BIDIRECTIONAL); - if (unlikely(dma_mapping_error(trans->dev, phys_addr))) { - idx = -ENOMEM; - goto out; + iwl_pcie_txq_build_tfd(trans, txq, phys_addr, + copy_size - scratch_size, 0); } - dma_unmap_addr_set(out_meta, mapping, phys_addr); - dma_unmap_len_set(out_meta, len, dma_size); - - iwl_pcie_txq_build_tfd(trans, txq, phys_addr, copy_size, 1); - /* map the remaining (adjusted) nocopy/dup fragments */ for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { const void *data = cmddata[i]; @@ -1586,10 +1585,9 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, struct iwl_cmd_meta *out_meta; struct iwl_txq *txq; struct iwl_queue *q; - dma_addr_t phys_addr = 0; - dma_addr_t txcmd_phys; - dma_addr_t scratch_phys; - u16 len, firstlen, secondlen; + dma_addr_t tb0_phys, tb1_phys, scratch_phys; + void *tb1_addr; + u16 len, tb1_len, tb2_len; u8 wait_write_ptr = 0; __le16 fc = hdr->frame_control; u8 hdr_len = ieee80211_hdrlen(fc); @@ -1627,85 +1625,80 @@ int iwl_trans_pcie_tx(struct iwl_trans *trans, struct sk_buff *skb, cpu_to_le16((u16)(QUEUE_TO_SEQ(txq_id) | INDEX_TO_SEQ(q->write_ptr))); + tb0_phys = iwl_pcie_get_scratchbuf_dma(txq, q->write_ptr); + scratch_phys = tb0_phys + sizeof(struct iwl_cmd_header) + + offsetof(struct iwl_tx_cmd, scratch); + + tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys); + tx_cmd->dram_msb_ptr = iwl_get_dma_hi_addr(scratch_phys); + /* Set up first empty entry in queue's array of Tx/cmd buffers */ out_meta = &txq->entries[q->write_ptr].meta; /* - * Use the first empty entry in this queue's command buffer array - * to contain the Tx command and MAC header concatenated together - * (payload data will be in another buffer). - * Size of this varies, due to varying MAC header length. - * If end is not dword aligned, we'll have 2 extra bytes at the end - * of the MAC header (device reads on dword boundaries). - * We'll tell device about this padding later. + * The second TB (tb1) points to the remainder of the TX command + * and the 802.11 header - dword aligned size + * (This calculation modifies the TX command, so do it before the + * setup of the first TB) */ - len = sizeof(struct iwl_tx_cmd) + - sizeof(struct iwl_cmd_header) + hdr_len; - firstlen = (len + 3) & ~3; + len = sizeof(struct iwl_tx_cmd) + sizeof(struct iwl_cmd_header) + + hdr_len - IWL_HCMD_SCRATCHBUF_SIZE; + tb1_len = (len + 3) & ~3; /* Tell NIC about any 2-byte padding after MAC header */ - if (firstlen != len) + if (tb1_len != len) tx_cmd->tx_flags |= TX_CMD_FLG_MH_PAD_MSK; - /* Physical address of this Tx command's header (not MAC header!), - * within command buffer array. */ - txcmd_phys = dma_map_single(trans->dev, - &dev_cmd->hdr, firstlen, - DMA_BIDIRECTIONAL); - if (unlikely(dma_mapping_error(trans->dev, txcmd_phys))) - goto out_err; - dma_unmap_addr_set(out_meta, mapping, txcmd_phys); - dma_unmap_len_set(out_meta, len, firstlen); + /* The first TB points to the scratchbuf data - min_copy bytes */ + memcpy(&txq->scratchbufs[q->write_ptr], &dev_cmd->hdr, + IWL_HCMD_SCRATCHBUF_SIZE); + iwl_pcie_txq_build_tfd(trans, txq, tb0_phys, + IWL_HCMD_SCRATCHBUF_SIZE, 1); - if (!ieee80211_has_morefrags(fc)) { - txq->need_update = 1; - } else { - wait_write_ptr = 1; - txq->need_update = 0; - } + /* there must be data left over for TB1 or this code must be changed */ + BUILD_BUG_ON(sizeof(struct iwl_tx_cmd) < IWL_HCMD_SCRATCHBUF_SIZE); + + /* map the data for TB1 */ + tb1_addr = ((u8 *)&dev_cmd->hdr) + IWL_HCMD_SCRATCHBUF_SIZE; + tb1_phys = dma_map_single(trans->dev, tb1_addr, tb1_len, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(trans->dev, tb1_phys))) + goto out_err; + iwl_pcie_txq_build_tfd(trans, txq, tb1_phys, tb1_len, 0); - /* Set up TFD's 2nd entry to point directly to remainder of skb, - * if any (802.11 null frames have no payload). */ - secondlen = skb->len - hdr_len; - if (secondlen > 0) { - phys_addr = dma_map_single(trans->dev, skb->data + hdr_len, - secondlen, DMA_TO_DEVICE); - if (unlikely(dma_mapping_error(trans->dev, phys_addr))) { - dma_unmap_single(trans->dev, - dma_unmap_addr(out_meta, mapping), - dma_unmap_len(out_meta, len), - DMA_BIDIRECTIONAL); + /* + * Set up TFD's third entry to point directly to remainder + * of skb, if any (802.11 null frames have no payload). + */ + tb2_len = skb->len - hdr_len; + if (tb2_len > 0) { + dma_addr_t tb2_phys = dma_map_single(trans->dev, + skb->data + hdr_len, + tb2_len, DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(trans->dev, tb2_phys))) { + iwl_pcie_tfd_unmap(trans, out_meta, + &txq->tfds[q->write_ptr]); goto out_err; } + iwl_pcie_txq_build_tfd(trans, txq, tb2_phys, tb2_len, 0); } - /* Attach buffers to TFD */ - iwl_pcie_txq_build_tfd(trans, txq, txcmd_phys, firstlen, 1); - if (secondlen > 0) - iwl_pcie_txq_build_tfd(trans, txq, phys_addr, secondlen, 0); - - scratch_phys = txcmd_phys + sizeof(struct iwl_cmd_header) + - offsetof(struct iwl_tx_cmd, scratch); - - /* take back ownership of DMA buffer to enable update */ - dma_sync_single_for_cpu(trans->dev, txcmd_phys, firstlen, - DMA_BIDIRECTIONAL); - tx_cmd->dram_lsb_ptr = cpu_to_le32(scratch_phys); - tx_cmd->dram_msb_ptr = iwl_get_dma_hi_addr(scratch_phys); - /* Set up entry for this TFD in Tx byte-count array */ iwl_pcie_txq_update_byte_cnt_tbl(trans, txq, le16_to_cpu(tx_cmd->len)); - dma_sync_single_for_device(trans->dev, txcmd_phys, firstlen, - DMA_BIDIRECTIONAL); - trace_iwlwifi_dev_tx(trans->dev, skb, &txq->tfds[txq->q.write_ptr], sizeof(struct iwl_tfd), - &dev_cmd->hdr, firstlen, - skb->data + hdr_len, secondlen); + &dev_cmd->hdr, IWL_HCMD_SCRATCHBUF_SIZE + tb1_len, + skb->data + hdr_len, tb2_len); trace_iwlwifi_dev_tx_data(trans->dev, skb, - skb->data + hdr_len, secondlen); + skb->data + hdr_len, tb2_len); + + if (!ieee80211_has_morefrags(fc)) { + txq->need_update = 1; + } else { + wait_write_ptr = 1; + txq->need_update = 0; + } /* start timer if queue currently empty */ if (txq->need_update && q->read_ptr == q->write_ptr && -- cgit v1.1 From 4cd5d1115c2f752ca94a0eb461b36d88fb37ed1e Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Thu, 28 Feb 2013 20:00:43 +0100 Subject: irq: Don't re-enable interrupts at the end of irq_exit Commit 74eed0163d0def3fce27228d9ccf3d36e207b286 "irq: Ensure irq_exit() code runs with interrupts disabled" restore interrupts flags in the end of irq_exit() for archs that don't define __ARCH_IRQ_EXIT_IRQS_DISABLED. However always returning from irq_exit() with interrupts disabled should not be a problem for these archs. Prior to this commit this was already happening anytime we processed pending softirqs anyway. Suggested-by: Linus Torvalds Signed-off-by: Frederic Weisbecker Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Paul E. McKenney --- kernel/softirq.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/kernel/softirq.c b/kernel/softirq.c index f42ff97..dce38fa 100644 --- a/kernel/softirq.c +++ b/kernel/softirq.c @@ -334,9 +334,7 @@ static inline void invoke_softirq(void) void irq_exit(void) { #ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED - unsigned long flags; - - local_irq_save(flags); + local_irq_disable(); #else WARN_ON_ONCE(!irqs_disabled()); #endif @@ -353,9 +351,6 @@ void irq_exit(void) tick_nohz_irq_exit(); #endif rcu_irq_exit(); -#ifndef __ARCH_IRQ_EXIT_IRQS_DISABLED - local_irq_restore(flags); -#endif } /* -- cgit v1.1 From 70fc69bc5a54d9776ace7c99d46eb533f8fb6e89 Mon Sep 17 00:00:00 2001 From: "Lee A. Roberts" Date: Thu, 28 Feb 2013 04:37:27 +0000 Subject: sctp: fix association hangs due to off-by-one errors in sctp_tsnmap_grow() In sctp_tsnmap_mark(), correct off-by-one error when calculating size value for sctp_tsnmap_grow(). In sctp_tsnmap_grow(), correct off-by-one error when copying and resizing the tsnmap. If max_tsn_seen is in the LSB of the word, this bit can be lost, causing the corresponding packet to be transmitted again and to be entered as a duplicate into the SCTP reassembly/ordering queues. Change parameter name from "gap" (zero-based index) to "size" (one-based) to enhance code readability. Signed-off-by: Lee A. Roberts Acked-by: Vlad Yasevich Acked-by: Neil Horman --- net/sctp/tsnmap.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/net/sctp/tsnmap.c b/net/sctp/tsnmap.c index 5f25e0c..396c451 100644 --- a/net/sctp/tsnmap.c +++ b/net/sctp/tsnmap.c @@ -51,7 +51,7 @@ static void sctp_tsnmap_update(struct sctp_tsnmap *map); static void sctp_tsnmap_find_gap_ack(unsigned long *map, __u16 off, __u16 len, __u16 *start, __u16 *end); -static int sctp_tsnmap_grow(struct sctp_tsnmap *map, u16 gap); +static int sctp_tsnmap_grow(struct sctp_tsnmap *map, u16 size); /* Initialize a block of memory as a tsnmap. */ struct sctp_tsnmap *sctp_tsnmap_init(struct sctp_tsnmap *map, __u16 len, @@ -124,7 +124,7 @@ int sctp_tsnmap_mark(struct sctp_tsnmap *map, __u32 tsn, gap = tsn - map->base_tsn; - if (gap >= map->len && !sctp_tsnmap_grow(map, gap)) + if (gap >= map->len && !sctp_tsnmap_grow(map, gap + 1)) return -ENOMEM; if (!sctp_tsnmap_has_gap(map) && gap == 0) { @@ -360,23 +360,24 @@ __u16 sctp_tsnmap_num_gabs(struct sctp_tsnmap *map, return ngaps; } -static int sctp_tsnmap_grow(struct sctp_tsnmap *map, u16 gap) +static int sctp_tsnmap_grow(struct sctp_tsnmap *map, u16 size) { unsigned long *new; unsigned long inc; u16 len; - if (gap >= SCTP_TSN_MAP_SIZE) + if (size > SCTP_TSN_MAP_SIZE) return 0; - inc = ALIGN((gap - map->len),BITS_PER_LONG) + SCTP_TSN_MAP_INCREMENT; + inc = ALIGN((size - map->len), BITS_PER_LONG) + SCTP_TSN_MAP_INCREMENT; len = min_t(u16, map->len + inc, SCTP_TSN_MAP_SIZE); new = kzalloc(len>>3, GFP_ATOMIC); if (!new) return 0; - bitmap_copy(new, map->tsn_map, map->max_tsn_seen - map->base_tsn); + bitmap_copy(new, map->tsn_map, + map->max_tsn_seen - map->cumulative_tsn_ack_point); kfree(map->tsn_map); map->tsn_map = new; map->len = len; -- cgit v1.1 From e67f85ecd83de66d4f25f2e0f90bb0d01a52ddd8 Mon Sep 17 00:00:00 2001 From: "Lee A. Roberts" Date: Thu, 28 Feb 2013 04:37:28 +0000 Subject: sctp: fix association hangs due to reneging packets below the cumulative TSN ACK point In sctp_ulpq_renege_list(), do not renege packets below the cumulative TSN ACK point. Signed-off-by: Lee A. Roberts Acked-by: Vlad Yasevich Acked-by: Neil Horman --- net/sctp/ulpqueue.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c index ada1746..63afddc 100644 --- a/net/sctp/ulpqueue.c +++ b/net/sctp/ulpqueue.c @@ -969,11 +969,16 @@ static __u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq, tsnmap = &ulpq->asoc->peer.tsn_map; - while ((skb = __skb_dequeue_tail(list)) != NULL) { - freed += skb_headlen(skb); + while ((skb = skb_peek_tail(list)) != NULL) { event = sctp_skb2event(skb); tsn = event->tsn; + /* Don't renege below the Cumulative TSN ACK Point. */ + if (TSN_lte(tsn, sctp_tsnmap_get_ctsn(tsnmap))) + break; + + __skb_unlink(skb, list); + freed += skb_headlen(skb); sctp_ulpevent_free(event); sctp_tsnmap_renege(tsnmap, tsn); if (freed >= needed) -- cgit v1.1 From 95ac7b859f508b1b3e6adf7dce307864e4384a69 Mon Sep 17 00:00:00 2001 From: "Lee A. Roberts" Date: Thu, 28 Feb 2013 04:37:29 +0000 Subject: sctp: fix association hangs due to errors when reneging events from the ordering queue In sctp_ulpq_renege_list(), events being reneged from the ordering queue may correspond to multiple TSNs. Identify all affected packets; sum freed space and renege from the tsnmap. Signed-off-by: Lee A. Roberts Acked-by: Vlad Yasevich Acked-by: Neil Horman --- net/sctp/ulpqueue.c | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c index 63afddc..f221fbb 100644 --- a/net/sctp/ulpqueue.c +++ b/net/sctp/ulpqueue.c @@ -962,8 +962,8 @@ static __u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq, struct sk_buff_head *list, __u16 needed) { __u16 freed = 0; - __u32 tsn; - struct sk_buff *skb; + __u32 tsn, last_tsn; + struct sk_buff *skb, *flist, *last; struct sctp_ulpevent *event; struct sctp_tsnmap *tsnmap; @@ -977,10 +977,28 @@ static __u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq, if (TSN_lte(tsn, sctp_tsnmap_get_ctsn(tsnmap))) break; - __skb_unlink(skb, list); + /* Events in ordering queue may have multiple fragments + * corresponding to additional TSNs. Sum the total + * freed space; find the last TSN. + */ freed += skb_headlen(skb); + flist = skb_shinfo(skb)->frag_list; + for (last = flist; flist; flist = flist->next) { + last = flist; + freed += skb_headlen(last); + } + if (last) + last_tsn = sctp_skb2event(last)->tsn; + else + last_tsn = tsn; + + /* Unlink the event, then renege all applicable TSNs. */ + __skb_unlink(skb, list); sctp_ulpevent_free(event); - sctp_tsnmap_renege(tsnmap, tsn); + while (TSN_lte(tsn, last_tsn)) { + sctp_tsnmap_renege(tsnmap, tsn); + tsn++; + } if (freed >= needed) return freed; } -- cgit v1.1 From d003b41b801124b96337973b01eada6a83673d23 Mon Sep 17 00:00:00 2001 From: "Lee A. Roberts" Date: Thu, 28 Feb 2013 04:37:30 +0000 Subject: sctp: fix association hangs due to partial delivery errors In sctp_ulpq_tail_data(), use return values 0,1 to indicate whether a complete event (with MSG_EOR set) was delivered. A return value of -ENOMEM continues to indicate an out-of-memory condition was encountered. In sctp_ulpq_retrieve_partial() and sctp_ulpq_retrieve_first(), correct message reassembly logic for SCTP partial delivery. Change logic to ensure that as much data as possible is sent with the initial partial delivery and that following partial deliveries contain all available data. In sctp_ulpq_partial_delivery(), attempt partial delivery only if the data on the head of the reassembly queue is at or before the cumulative TSN ACK point. In sctp_ulpq_renege(), use the modified return values from sctp_ulpq_tail_data() to choose whether to attempt partial delivery or to attempt to drain the reassembly queue as a means to reduce memory pressure. Remove call to sctp_tsnmap_mark(), as this is handled correctly in call to sctp_ulpq_tail_data(). Signed-off-by: Lee A. Roberts Acked-by: Vlad Yasevich Acked-by: Neil Horman --- net/sctp/ulpqueue.c | 54 ++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 43 insertions(+), 11 deletions(-) diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c index f221fbb..0fd5b3d 100644 --- a/net/sctp/ulpqueue.c +++ b/net/sctp/ulpqueue.c @@ -106,6 +106,7 @@ int sctp_ulpq_tail_data(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk, { struct sk_buff_head temp; struct sctp_ulpevent *event; + int event_eor = 0; /* Create an event from the incoming chunk. */ event = sctp_ulpevent_make_rcvmsg(chunk->asoc, chunk, gfp); @@ -127,10 +128,12 @@ int sctp_ulpq_tail_data(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk, /* Send event to the ULP. 'event' is the sctp_ulpevent for * very first SKB on the 'temp' list. */ - if (event) + if (event) { + event_eor = (event->msg_flags & MSG_EOR) ? 1 : 0; sctp_ulpq_tail_event(ulpq, event); + } - return 0; + return event_eor; } /* Add a new event for propagation to the ULP. */ @@ -540,14 +543,19 @@ static struct sctp_ulpevent *sctp_ulpq_retrieve_partial(struct sctp_ulpq *ulpq) ctsn = cevent->tsn; switch (cevent->msg_flags & SCTP_DATA_FRAG_MASK) { + case SCTP_DATA_FIRST_FRAG: + if (!first_frag) + return NULL; + goto done; case SCTP_DATA_MIDDLE_FRAG: if (!first_frag) { first_frag = pos; next_tsn = ctsn + 1; last_frag = pos; - } else if (next_tsn == ctsn) + } else if (next_tsn == ctsn) { next_tsn++; - else + last_frag = pos; + } else goto done; break; case SCTP_DATA_LAST_FRAG: @@ -651,6 +659,14 @@ static struct sctp_ulpevent *sctp_ulpq_retrieve_first(struct sctp_ulpq *ulpq) } else goto done; break; + + case SCTP_DATA_LAST_FRAG: + if (!first_frag) + return NULL; + else + goto done; + break; + default: return NULL; } @@ -1025,16 +1041,28 @@ void sctp_ulpq_partial_delivery(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event; struct sctp_association *asoc; struct sctp_sock *sp; + __u32 ctsn; + struct sk_buff *skb; asoc = ulpq->asoc; sp = sctp_sk(asoc->base.sk); /* If the association is already in Partial Delivery mode - * we have noting to do. + * we have nothing to do. */ if (ulpq->pd_mode) return; + /* Data must be at or below the Cumulative TSN ACK Point to + * start partial delivery. + */ + skb = skb_peek(&asoc->ulpq.reasm); + if (skb != NULL) { + ctsn = sctp_skb2event(skb)->tsn; + if (!TSN_lte(ctsn, sctp_tsnmap_get_ctsn(&asoc->peer.tsn_map))) + return; + } + /* If the user enabled fragment interleave socket option, * multiple associations can enter partial delivery. * Otherwise, we can only enter partial delivery if the @@ -1077,12 +1105,16 @@ void sctp_ulpq_renege(struct sctp_ulpq *ulpq, struct sctp_chunk *chunk, } /* If able to free enough room, accept this chunk. */ if (chunk && (freed >= needed)) { - __u32 tsn; - tsn = ntohl(chunk->subh.data_hdr->tsn); - sctp_tsnmap_mark(&asoc->peer.tsn_map, tsn, chunk->transport); - sctp_ulpq_tail_data(ulpq, chunk, gfp); - - sctp_ulpq_partial_delivery(ulpq, gfp); + int retval; + retval = sctp_ulpq_tail_data(ulpq, chunk, gfp); + /* + * Enter partial delivery if chunk has not been + * delivered; otherwise, drain the reassembly queue. + */ + if (retval <= 0) + sctp_ulpq_partial_delivery(ulpq, gfp); + else if (retval == 1) + sctp_ulpq_reasm_drain(ulpq); } sk_mem_reclaim(asoc->base.sk); -- cgit v1.1 From 79ffef1fe213851f44bfccf037170a140e929f85 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 27 Feb 2013 07:05:03 +0000 Subject: tcp: avoid wakeups for pure ACK TCP prequeue mechanism purpose is to let incoming packets being processed by the thread currently blocked in tcp_recvmsg(), instead of behalf of the softirq handler, to better adapt flow control on receiver host capacity to schedule the consumer. But in typical request/answer workloads, we send request, then block to receive the answer. And before the actual answer, TCP stack receives the ACK packets acknowledging the request. Processing pure ACK on behalf of the thread blocked in tcp_recvmsg() is a waste of resources, as thread has to immediately sleep again because it got no payload. This patch avoids the extra context switches and scheduler overhead. Before patch : a:~# echo 0 >/proc/sys/net/ipv4/tcp_low_latency a:~# perf stat ./super_netperf 300 -t TCP_RR -l 10 -H 7.7.7.84 -- -r 8k,8k 231676 Performance counter stats for './super_netperf 300 -t TCP_RR -l 10 -H 7.7.7.84 -- -r 8k,8k': 116251.501765 task-clock # 11.369 CPUs utilized 5,025,463 context-switches # 0.043 M/sec 1,074,511 CPU-migrations # 0.009 M/sec 216,923 page-faults # 0.002 M/sec 311,636,972,396 cycles # 2.681 GHz 260,507,138,069 stalled-cycles-frontend # 83.59% frontend cycles idle 155,590,092,840 stalled-cycles-backend # 49.93% backend cycles idle 100,101,255,411 instructions # 0.32 insns per cycle # 2.60 stalled cycles per insn 16,535,930,999 branches # 142.243 M/sec 646,483,591 branch-misses # 3.91% of all branches 10.225482774 seconds time elapsed After patch : a:~# echo 0 >/proc/sys/net/ipv4/tcp_low_latency a:~# perf stat ./super_netperf 300 -t TCP_RR -l 10 -H 7.7.7.84 -- -r 8k,8k 233297 Performance counter stats for './super_netperf 300 -t TCP_RR -l 10 -H 7.7.7.84 -- -r 8k,8k': 91084.870855 task-clock # 8.887 CPUs utilized 2,485,916 context-switches # 0.027 M/sec 815,520 CPU-migrations # 0.009 M/sec 216,932 page-faults # 0.002 M/sec 245,195,022,629 cycles # 2.692 GHz 202,635,777,041 stalled-cycles-frontend # 82.64% frontend cycles idle 124,280,372,407 stalled-cycles-backend # 50.69% backend cycles idle 83,457,289,618 instructions # 0.34 insns per cycle # 2.43 stalled cycles per insn 13,431,472,361 branches # 147.461 M/sec 504,470,665 branch-misses # 3.76% of all branches 10.249594448 seconds time elapsed Signed-off-by: Eric Dumazet Cc: Neal Cardwell Cc: Tom Herbert Cc: Yuchung Cheng Cc: Andi Kleen Signed-off-by: David S. Miller --- include/net/tcp.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/net/tcp.h b/include/net/tcp.h index 23f2e98..cf0694d 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -1045,6 +1045,10 @@ static inline bool tcp_prequeue(struct sock *sk, struct sk_buff *skb) if (sysctl_tcp_low_latency || !tp->ucopy.task) return false; + if (skb->len <= tcp_hdrlen(skb) && + skb_queue_len(&tp->ucopy.prequeue) == 0) + return false; + __skb_queue_tail(&tp->ucopy.prequeue, skb); tp->ucopy.memory += skb->truesize; if (tp->ucopy.memory > sk->sk_rcvbuf) { -- cgit v1.1 From faf1e7857a1b87cd8baf48c3e962142e21ad417c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?fran=C3=A7ois=20romieu?= Date: Wed, 27 Feb 2013 13:01:57 +0000 Subject: r8169: honor jumbo settings when chipset is requested to start. Some hardware start settings implicitely assume an usual 1500 bytes mtu that can't be guaranteed because changes of mtu may be requested both before and after the hardware is started. Reported-by: Tomi Orava Signed-off-by: Francois Romieu Cc: Hayes Wang Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 8900398..28fb50a 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -4765,8 +4765,10 @@ static void rtl_hw_start_8168bb(struct rtl8169_private *tp) RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK); - rtl_tx_performance_tweak(pdev, - (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN); + if (tp->dev->mtu <= ETH_DATA_LEN) { + rtl_tx_performance_tweak(pdev, (0x5 << MAX_READ_REQUEST_SHIFT) | + PCI_EXP_DEVCTL_NOSNOOP_EN); + } } static void rtl_hw_start_8168bef(struct rtl8169_private *tp) @@ -4789,7 +4791,8 @@ static void __rtl_hw_start_8168cp(struct rtl8169_private *tp) RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); rtl_disable_clock_request(pdev); @@ -4822,7 +4825,8 @@ static void rtl_hw_start_8168cp_2(struct rtl8169_private *tp) RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK); } @@ -4841,7 +4845,8 @@ static void rtl_hw_start_8168cp_3(struct rtl8169_private *tp) RTL_W8(MaxTxPacketSize, TxPacketMax); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK); } @@ -4901,7 +4906,8 @@ static void rtl_hw_start_8168d(struct rtl8169_private *tp) RTL_W8(MaxTxPacketSize, TxPacketMax); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK); } @@ -4913,7 +4919,8 @@ static void rtl_hw_start_8168dp(struct rtl8169_private *tp) rtl_csi_access_enable_1(tp); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); RTL_W8(MaxTxPacketSize, TxPacketMax); @@ -4972,7 +4979,8 @@ static void rtl_hw_start_8168e_1(struct rtl8169_private *tp) rtl_ephy_init(tp, e_info_8168e_1, ARRAY_SIZE(e_info_8168e_1)); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); RTL_W8(MaxTxPacketSize, TxPacketMax); @@ -4998,7 +5006,8 @@ static void rtl_hw_start_8168e_2(struct rtl8169_private *tp) rtl_ephy_init(tp, e_info_8168e_2, ARRAY_SIZE(e_info_8168e_2)); - rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); + if (tp->dev->mtu <= ETH_DATA_LEN) + rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT); rtl_eri_write(tp, 0xc0, ERIAR_MASK_0011, 0x0000, ERIAR_EXGMAC); rtl_eri_write(tp, 0xb8, ERIAR_MASK_0011, 0x0000, ERIAR_EXGMAC); -- cgit v1.1 From 8ce7684533013d0a0dfbd627ed0430ecb0c82213 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Wed, 27 Feb 2013 13:06:44 +0000 Subject: bnx2x: Fix port identification for the 84834 Fix the "ethtool -p" for boards with BCM84834, by using LED4 of the PHY to toggle the link LED while keeping interrupt disabled to avoid NIG attentions, and at the end restore NIG to previous state. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 60 ++++++++++++++++++++++++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h | 3 +- 2 files changed, 62 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 1663e0b..4719ab1 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -10422,6 +10422,28 @@ static void bnx2x_848xx_set_link_led(struct bnx2x_phy *phy, MDIO_PMA_DEVAD, MDIO_PMA_REG_8481_LED1_MASK, 0x0); + if (phy->type == + PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84834) { + /* Disable MI_INT interrupt before setting LED4 + * source to constant off. + */ + if (REG_RD(bp, NIG_REG_MASK_INTERRUPT_PORT0 + + params->port*4) & + NIG_MASK_MI_INT) { + params->link_flags |= + LINK_FLAGS_INT_DISABLED; + + bnx2x_bits_dis( + bp, + NIG_REG_MASK_INTERRUPT_PORT0 + + params->port*4, + NIG_MASK_MI_INT); + } + bnx2x_cl45_write(bp, phy, + MDIO_PMA_DEVAD, + MDIO_PMA_REG_8481_SIGNAL_MASK, + 0x0); + } } break; case LED_MODE_ON: @@ -10468,6 +10490,28 @@ static void bnx2x_848xx_set_link_led(struct bnx2x_phy *phy, MDIO_PMA_DEVAD, MDIO_PMA_REG_8481_LED1_MASK, 0x20); + if (phy->type == + PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84834) { + /* Disable MI_INT interrupt before setting LED4 + * source to constant on. + */ + if (REG_RD(bp, NIG_REG_MASK_INTERRUPT_PORT0 + + params->port*4) & + NIG_MASK_MI_INT) { + params->link_flags |= + LINK_FLAGS_INT_DISABLED; + + bnx2x_bits_dis( + bp, + NIG_REG_MASK_INTERRUPT_PORT0 + + params->port*4, + NIG_MASK_MI_INT); + } + bnx2x_cl45_write(bp, phy, + MDIO_PMA_DEVAD, + MDIO_PMA_REG_8481_SIGNAL_MASK, + 0x20); + } } break; @@ -10532,6 +10576,22 @@ static void bnx2x_848xx_set_link_led(struct bnx2x_phy *phy, MDIO_PMA_DEVAD, MDIO_PMA_REG_8481_LINK_SIGNAL, val); + if (phy->type == + PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM84834) { + /* Restore LED4 source to external link, + * and re-enable interrupts. + */ + bnx2x_cl45_write(bp, phy, + MDIO_PMA_DEVAD, + MDIO_PMA_REG_8481_SIGNAL_MASK, + 0x40); + if (params->link_flags & + LINK_FLAGS_INT_DISABLED) { + bnx2x_link_int_enable(params); + params->link_flags &= + ~LINK_FLAGS_INT_DISABLED; + } + } } break; } diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h index d25c7d7..be5c195 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h @@ -307,7 +307,8 @@ struct link_params { struct bnx2x *bp; u16 req_fc_auto_adv; /* Should be set to TX / BOTH when req_flow_ctrl is set to AUTO */ - u16 rsrv1; + u16 link_flags; +#define LINK_FLAGS_INT_DISABLED (1<<0) u32 lfa_base; }; -- cgit v1.1 From be94bea753a4d5ac0982df07aaeaf0cb1f7554dd Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Wed, 27 Feb 2013 13:06:45 +0000 Subject: bnx2x: Fix KR2 link Fix KR2 link down problem after reboot when link speed is reconfigured via ethtool. Since 1G/10G support link speed were missing by default, 1G/10G link speed were not advertised. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c | 6 ++++++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c index 9a674b1..edfa67a 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c @@ -281,6 +281,8 @@ static int bnx2x_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) cmd->lp_advertising |= ADVERTISED_2500baseX_Full; if (status & LINK_STATUS_LINK_PARTNER_10GXFD_CAPABLE) cmd->lp_advertising |= ADVERTISED_10000baseT_Full; + if (status & LINK_STATUS_LINK_PARTNER_20GXFD_CAPABLE) + cmd->lp_advertising |= ADVERTISED_20000baseKR2_Full; } cmd->maxtxpkt = 0; @@ -463,6 +465,10 @@ static int bnx2x_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) ADVERTISED_10000baseKR_Full)) bp->link_params.speed_cap_mask[cfg_idx] |= PORT_HW_CFG_SPEED_CAPABILITY_D0_10G; + + if (cmd->advertising & ADVERTISED_20000baseKR2_Full) + bp->link_params.speed_cap_mask[cfg_idx] |= + PORT_HW_CFG_SPEED_CAPABILITY_D0_20G; } } else { /* forced speed */ /* advertise the requested speed and duplex if supported */ diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 4719ab1..bf69c53 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -11851,6 +11851,8 @@ static int bnx2x_populate_int_phy(struct bnx2x *bp, u32 shmem_base, u8 port, phy->media_type = ETH_PHY_KR; phy->flags |= FLAGS_WC_DUAL_MODE; phy->supported &= (SUPPORTED_20000baseKR2_Full | + SUPPORTED_10000baseT_Full | + SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE | SUPPORTED_Pause | -- cgit v1.1 From d521de04a73abb5e662c12eafa8c839aaaa6ae4f Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Wed, 27 Feb 2013 13:06:46 +0000 Subject: bnx2x: Fix KR2 work-around condition Fix condition typo for running KR2 work-around though it doesn't have real effect since the typo bits matched by chance. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index bf69c53..31c5787 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -13499,7 +13499,7 @@ void bnx2x_period_func(struct link_params *params, struct link_vars *vars) struct bnx2x_phy *phy = ¶ms->phy[INT_PHY]; bnx2x_set_aer_mmd(params, phy); if ((phy->supported & SUPPORTED_20000baseKR2_Full) && - (phy->speed_cap_mask & SPEED_20000)) + (phy->speed_cap_mask & PORT_HW_CFG_SPEED_CAPABILITY_D0_20G)) bnx2x_check_kr2_wa(params, vars, phy); bnx2x_check_over_curr(params, vars); if (vars->rx_tx_asic_rst) -- cgit v1.1 From b2a431915d19893f047e0dd149d0c1b9d2a0b960 Mon Sep 17 00:00:00 2001 From: Petr Malat Date: Thu, 28 Feb 2013 01:01:52 +0000 Subject: phy: Fix phy_device_free memory leak Fix memory leak in phy_device_free() for the case when phy_device* returned by phy_device_create() is not registered in the system. Bug description: phy_device_create() sets name of kobject using dev_set_name(), which allocates memory using kvasprintf(), but this memory isn't freed if the underlying device isn't registered properly, because kobject_cleanup() is not called in that case. This can happen (and actually is happening on our machines) if phy_device_register(), called by mdiobus_scan(), fails. Patch description: Embedded struct device is initialized in phy_device_create() and it counterpart phy_device_free() just drops one reference to the device, which leads to proper deinitialization including releasing the kobject name memory. Signed-off-by: Petr Malat Signed-off-by: David S. Miller --- drivers/net/phy/phy_device.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 9930f99..3657b4a 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -44,13 +44,13 @@ MODULE_LICENSE("GPL"); void phy_device_free(struct phy_device *phydev) { - kfree(phydev); + put_device(&phydev->dev); } EXPORT_SYMBOL(phy_device_free); static void phy_device_release(struct device *dev) { - phy_device_free(to_phy_device(dev)); + kfree(to_phy_device(dev)); } static struct phy_driver genphy_driver; @@ -201,6 +201,8 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id, there's no driver _already_ loaded. */ request_module(MDIO_MODULE_PREFIX MDIO_ID_FMT, MDIO_ID_ARGS(phy_id)); + device_initialize(&dev->dev); + return dev; } EXPORT_SYMBOL(phy_device_create); @@ -363,9 +365,9 @@ int phy_device_register(struct phy_device *phydev) /* Run all of the fixups for this PHY */ phy_scan_fixups(phydev); - err = device_register(&phydev->dev); + err = device_add(&phydev->dev); if (err) { - pr_err("phy %d failed to register\n", phydev->addr); + pr_err("PHY %d failed to add\n", phydev->addr); goto out; } -- cgit v1.1 From 02e711276d444343656c25b91b42996c62726712 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Thu, 28 Feb 2013 07:16:54 +0000 Subject: bgmac: omit the fcs Do not include the frame check sequence when adding the skb to netif_receive_skb(). This causes problems when this interface was bridged to a wifi ap and a big package should be forwarded from this Ethernet driver through a bride to the wifi client. Signed-off-by: Hauke Mehrtens Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bgmac.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index bf985c0..bce30e7 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -301,12 +301,16 @@ static int bgmac_dma_rx_read(struct bgmac *bgmac, struct bgmac_dma_ring *ring, bgmac_err(bgmac, "Found poisoned packet at slot %d, DMA issue!\n", ring->start); } else { + /* Omit CRC. */ + len -= ETH_FCS_LEN; + new_skb = netdev_alloc_skb_ip_align(bgmac->net_dev, len); if (new_skb) { skb_put(new_skb, len); skb_copy_from_linear_data_offset(skb, BGMAC_RX_FRAME_OFFSET, new_skb->data, len); + skb_checksum_none_assert(skb); new_skb->protocol = eth_type_trans(new_skb, bgmac->net_dev); netif_receive_skb(new_skb); -- cgit v1.1 From 32fcafbcd1c9f6c7013016a22a5369b4acb93577 Mon Sep 17 00:00:00 2001 From: Vlastimil Kosar Date: Thu, 28 Feb 2013 08:45:22 +0000 Subject: net/phy: micrel: Disable asymmetric pause for KSZ9021 Phyter KSZ9021 has hardware bug. If asymmetric pause is enabled, then it is necessary to disconnect and then reconnect the ethernet cable to get the phyter working. The solution is to disable the asymmetric pause. Signed-off-by: Vlastimil Kosar Signed-off-by: David S. Miller --- drivers/net/phy/micrel.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 2993444..abf7b61 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -257,8 +257,7 @@ static struct phy_driver ksphy_driver[] = { .phy_id = PHY_ID_KSZ9021, .phy_id_mask = 0x000ffffe, .name = "Micrel KSZ9021 Gigabit PHY", - .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause - | SUPPORTED_Asym_Pause), + .features = (PHY_GBIT_FEATURES | SUPPORTED_Pause), .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = kszphy_config_init, .config_aneg = genphy_config_aneg, -- cgit v1.1 From 4ceb73ae5a09416e040bce8bcfa7218dc5149ad8 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Sun, 24 Feb 2013 19:26:25 -0800 Subject: regulator: db8500-prcmu - remove incorrect __exit markup Even if bus is not hot-pluggable, the devices can be unbound from the driver via sysfs, so we should not be using __exit annotations on remove() methods. The only exception is drivers registered with platform_driver_probe() which specifically disables sysfs bind/unbind attributes. Signed-off-by: Dmitry Torokhov Signed-off-by: Mark Brown --- drivers/regulator/db8500-prcmu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/regulator/db8500-prcmu.c b/drivers/regulator/db8500-prcmu.c index 219d162..a53c11a 100644 --- a/drivers/regulator/db8500-prcmu.c +++ b/drivers/regulator/db8500-prcmu.c @@ -528,7 +528,7 @@ static int db8500_regulator_probe(struct platform_device *pdev) return 0; } -static int __exit db8500_regulator_remove(struct platform_device *pdev) +static int db8500_regulator_remove(struct platform_device *pdev) { int i; @@ -553,7 +553,7 @@ static struct platform_driver db8500_regulator_driver = { .owner = THIS_MODULE, }, .probe = db8500_regulator_probe, - .remove = __exit_p(db8500_regulator_remove), + .remove = db8500_regulator_remove, }; static int __init db8500_regulator_init(void) -- cgit v1.1 From 5838b032fd69ae47565ddc50062decf9055e1628 Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Thu, 28 Feb 2013 18:12:47 -0600 Subject: regulator: core: update kernel documentation for regulator_desc commit df367931 (regulator: core: Provide regmap get/set bypass operations) introduced regulator_[gs]et_bypass_regmap However structure documentation for regulator_desc needs an update. ./scripts/kernel-doc include/linux/regulator/driver.h >/dev/null generates: Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_reg' Warning(include/linux/regulator/driver.h:233): No description found for parameter 'bypass_mask' Cc: Liam Girdwood Cc: Mark Brown Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Mark Brown --- include/linux/regulator/driver.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 23070fd..7df93f5 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -199,6 +199,8 @@ enum regulator_type { * output when using regulator_set_voltage_sel_regmap * @enable_reg: Register for control when using regmap enable/disable ops * @enable_mask: Mask for control when using regmap enable/disable ops + * @bypass_reg: Register for control when using regmap set_bypass + * @bypass_mask: Mask for control when using regmap set_bypass * * @enable_time: Time taken for initial enable of regulator (in uS). */ -- cgit v1.1 From 9345dfb8495aa17ce7c575e1a96e5ad64def0b3d Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Thu, 28 Feb 2013 18:44:54 -0600 Subject: regulator: core: fix documentation error in regulator_allow_bypass commit f59c8f9f (regulator: core: Support bypass mode) has a short documentation error around the regulator_allow_bypass parameter 'enable' which is documented as 'allow'. This generates kernel-doc warning as follows: ./scripts/kernel-doc drivers/regulator/core.c >/dev/null Warning(drivers/regulator/core.c:2841): No description found for parameter 'enable' Warning(drivers/regulator/core.c:2841): Excess function parameter 'allow' description in 'regulator_allow_bypass' Cc: Liam Girdwood Cc: Mark Brown Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Mark Brown --- drivers/regulator/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index da9782b..154bc8f 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2830,7 +2830,7 @@ EXPORT_SYMBOL_GPL(regulator_get_bypass_regmap); * regulator_allow_bypass - allow the regulator to go into bypass mode * * @regulator: Regulator to configure - * @allow: enable or disable bypass mode + * @enable: enable or disable bypass mode * * Allow the regulator to go into bypass mode if all other consumers * for the regulator also enable bypass mode and the machine -- cgit v1.1 From 283189d3be56aa6db6f192bb255df68493cd79ac Mon Sep 17 00:00:00 2001 From: Li Fei Date: Thu, 28 Feb 2013 15:37:11 +0800 Subject: regmap: irq: call pm_runtime_put in pm_runtime_get_sync failed case Even in failed case of pm_runtime_get_sync, the usage_count is incremented. In order to keep the usage_count with correct value and runtime power management to behave correctly, call pm_runtime_put(_sync) in such case. Signed-off-by Liu Chuansheng Signed-off-by: Li Fei Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-irq.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index 4706c63..020ea2b 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -184,6 +184,7 @@ static irqreturn_t regmap_irq_thread(int irq, void *d) if (ret < 0) { dev_err(map->dev, "IRQ thread failed to resume: %d\n", ret); + pm_runtime_put(map->dev); return IRQ_NONE; } } -- cgit v1.1 From a7dddf2757d09ba38683b359a721dc2efe85cd24 Mon Sep 17 00:00:00 2001 From: Graeme Gregory Date: Sat, 23 Feb 2013 16:35:40 +0000 Subject: regulator: palmas: fix number of SMPS voltages Number of voltages for SMPS regulators was off by one. Signed-off-by: Graeme Gregory Signed-off-by: Ian Lartey Acked-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/regulator/palmas-regulator.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/regulator/palmas-regulator.c b/drivers/regulator/palmas-regulator.c index cde13bb..39cf146 100644 --- a/drivers/regulator/palmas-regulator.c +++ b/drivers/regulator/palmas-regulator.c @@ -4,6 +4,7 @@ * Copyright 2011-2012 Texas Instruments Inc. * * Author: Graeme Gregory + * Author: Ian Lartey * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the @@ -156,7 +157,7 @@ static const struct regs_info palmas_regs_info[] = { * * So they are basically (maxV-minV)/stepV */ -#define PALMAS_SMPS_NUM_VOLTAGES 116 +#define PALMAS_SMPS_NUM_VOLTAGES 117 #define PALMAS_SMPS10_NUM_VOLTAGES 2 #define PALMAS_LDO_NUM_VOLTAGES 50 -- cgit v1.1 From 6949fbe5b2d7b73dfeddeb470a56385ca36b4827 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 16 Feb 2013 10:09:54 +0800 Subject: regulator: twl: Convert twl4030ldo_ops to get_voltage_sel This fixes an inconsistent behavior between list_voltage() and get_voltage() because current implementation of get_voltage() does not check the case IS_UNSUP() is true. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- drivers/regulator/twl-regulator.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c index 74508cc..f705d25 100644 --- a/drivers/regulator/twl-regulator.c +++ b/drivers/regulator/twl-regulator.c @@ -471,24 +471,23 @@ twl4030ldo_set_voltage_sel(struct regulator_dev *rdev, unsigned selector) selector); } -static int twl4030ldo_get_voltage(struct regulator_dev *rdev) +static int twl4030ldo_get_voltage_sel(struct regulator_dev *rdev) { struct twlreg_info *info = rdev_get_drvdata(rdev); - int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, - VREG_VOLTAGE); + int vsel = twlreg_read(info, TWL_MODULE_PM_RECEIVER, VREG_VOLTAGE); if (vsel < 0) return vsel; vsel &= info->table_len - 1; - return LDO_MV(info->table[vsel]) * 1000; + return vsel; } static struct regulator_ops twl4030ldo_ops = { .list_voltage = twl4030ldo_list_voltage, .set_voltage_sel = twl4030ldo_set_voltage_sel, - .get_voltage = twl4030ldo_get_voltage, + .get_voltage_sel = twl4030ldo_get_voltage_sel, .enable = twl4030reg_enable, .disable = twl4030reg_disable, -- cgit v1.1 From b3df026ea230b233f5a4ebc7400033f7326fad12 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 26 Feb 2013 23:35:46 +0000 Subject: ASoC: wm8960: Correct register 0 and 1 defaults Signed-off-by: Mark Brown --- sound/soc/codecs/wm8960.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 9bb9273..4cb49eb 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -53,8 +53,8 @@ * using 2 wire for device control, so we cache them instead. */ static const struct reg_default wm8960_reg_defaults[] = { - { 0x0, 0x0097 }, - { 0x1, 0x0097 }, + { 0x0, 0x00a7 }, + { 0x1, 0x00a7 }, { 0x2, 0x0000 }, { 0x3, 0x0000 }, { 0x4, 0x0000 }, -- cgit v1.1 From 44426de4d87682870b35a649b76586177113f5e7 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 26 Feb 2013 23:36:48 +0000 Subject: ASoC: wm8960: Fix ADC power bits Signed-off-by: Mark Brown --- sound/soc/codecs/wm8960.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 4cb49eb..a64b934 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -323,8 +323,8 @@ SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0, SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0, wm8960_rin, ARRAY_SIZE(wm8960_rin)), -SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0), -SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0), +SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0), +SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0), SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0), SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0), -- cgit v1.1 From c9b5669031a72026e41c4a7a094ac1efa4ef0ef5 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Fri, 15 Feb 2013 10:37:26 +0000 Subject: ASoC: wm5102: Correct OUT2 volume and switch names Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm5102.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index ab69c83..deb1097 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -755,7 +755,7 @@ SOC_SINGLE("SPKDAT1 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_5L, SOC_DOUBLE_R("HPOUT1 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_1L, ARIZONA_DAC_DIGITAL_VOLUME_1R, ARIZONA_OUT1L_MUTE_SHIFT, 1, 1), -SOC_DOUBLE_R("OUT2 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_2L, +SOC_DOUBLE_R("HPOUT2 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_2L, ARIZONA_DAC_DIGITAL_VOLUME_2R, ARIZONA_OUT2L_MUTE_SHIFT, 1, 1), SOC_SINGLE("EPOUT Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_3L, ARIZONA_OUT3L_MUTE_SHIFT, 1, 1), @@ -767,7 +767,7 @@ SOC_DOUBLE_R("SPKDAT1 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_5L, SOC_DOUBLE_R_TLV("HPOUT1 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_1L, ARIZONA_DAC_DIGITAL_VOLUME_1R, ARIZONA_OUT1L_VOL_SHIFT, 0xbf, 0, digital_tlv), -SOC_DOUBLE_R_TLV("OUT2 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_2L, +SOC_DOUBLE_R_TLV("HPOUT2 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_2L, ARIZONA_DAC_DIGITAL_VOLUME_2R, ARIZONA_OUT2L_VOL_SHIFT, 0xbf, 0, digital_tlv), SOC_SINGLE_TLV("EPOUT Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_3L, -- cgit v1.1 From 5752ec93f3a120f0d4088565989eaea27db7a0d8 Mon Sep 17 00:00:00 2001 From: Charles Keepax Date: Fri, 15 Feb 2013 10:37:27 +0000 Subject: ASoC: wm5110: Correct OUT2/3 volume and switch names Signed-off-by: Charles Keepax Signed-off-by: Mark Brown --- sound/soc/codecs/wm5110.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index a163132..1a97263 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -213,9 +213,9 @@ ARIZONA_MIXER_CONTROLS("SPKDAT2R", ARIZONA_OUT6RMIX_INPUT_1_SOURCE), SOC_SINGLE("HPOUT1 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_1L, ARIZONA_OUT1_OSR_SHIFT, 1, 0), -SOC_SINGLE("OUT2 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_2L, +SOC_SINGLE("HPOUT2 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_2L, ARIZONA_OUT2_OSR_SHIFT, 1, 0), -SOC_SINGLE("OUT3 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_3L, +SOC_SINGLE("HPOUT3 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_3L, ARIZONA_OUT3_OSR_SHIFT, 1, 0), SOC_SINGLE("Speaker High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_4L, ARIZONA_OUT4_OSR_SHIFT, 1, 0), @@ -226,9 +226,9 @@ SOC_SINGLE("SPKDAT2 High Performance Switch", ARIZONA_OUTPUT_PATH_CONFIG_6L, SOC_DOUBLE_R("HPOUT1 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_1L, ARIZONA_DAC_DIGITAL_VOLUME_1R, ARIZONA_OUT1L_MUTE_SHIFT, 1, 1), -SOC_DOUBLE_R("OUT2 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_2L, +SOC_DOUBLE_R("HPOUT2 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_2L, ARIZONA_DAC_DIGITAL_VOLUME_2R, ARIZONA_OUT2L_MUTE_SHIFT, 1, 1), -SOC_DOUBLE_R("OUT3 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_3L, +SOC_DOUBLE_R("HPOUT3 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_3L, ARIZONA_DAC_DIGITAL_VOLUME_3R, ARIZONA_OUT3L_MUTE_SHIFT, 1, 1), SOC_DOUBLE_R("Speaker Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_4L, ARIZONA_DAC_DIGITAL_VOLUME_4R, ARIZONA_OUT4L_MUTE_SHIFT, 1, 1), @@ -240,10 +240,10 @@ SOC_DOUBLE_R("SPKDAT2 Digital Switch", ARIZONA_DAC_DIGITAL_VOLUME_6L, SOC_DOUBLE_R_TLV("HPOUT1 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_1L, ARIZONA_DAC_DIGITAL_VOLUME_1R, ARIZONA_OUT1L_VOL_SHIFT, 0xbf, 0, digital_tlv), -SOC_DOUBLE_R_TLV("OUT2 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_2L, +SOC_DOUBLE_R_TLV("HPOUT2 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_2L, ARIZONA_DAC_DIGITAL_VOLUME_2R, ARIZONA_OUT2L_VOL_SHIFT, 0xbf, 0, digital_tlv), -SOC_DOUBLE_R_TLV("OUT3 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_3L, +SOC_DOUBLE_R_TLV("HPOUT3 Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_3L, ARIZONA_DAC_DIGITAL_VOLUME_3R, ARIZONA_OUT3L_VOL_SHIFT, 0xbf, 0, digital_tlv), SOC_DOUBLE_R_TLV("Speaker Digital Volume", ARIZONA_DAC_DIGITAL_VOLUME_4L, @@ -260,11 +260,11 @@ SOC_DOUBLE_R_RANGE_TLV("HPOUT1 Volume", ARIZONA_OUTPUT_PATH_CONFIG_1L, ARIZONA_OUTPUT_PATH_CONFIG_1R, ARIZONA_OUT1L_PGA_VOL_SHIFT, 0x34, 0x40, 0, ana_tlv), -SOC_DOUBLE_R_RANGE_TLV("OUT2 Volume", ARIZONA_OUTPUT_PATH_CONFIG_2L, +SOC_DOUBLE_R_RANGE_TLV("HPOUT2 Volume", ARIZONA_OUTPUT_PATH_CONFIG_2L, ARIZONA_OUTPUT_PATH_CONFIG_2R, ARIZONA_OUT2L_PGA_VOL_SHIFT, 0x34, 0x40, 0, ana_tlv), -SOC_DOUBLE_R_RANGE_TLV("OUT3 Volume", ARIZONA_OUTPUT_PATH_CONFIG_3L, +SOC_DOUBLE_R_RANGE_TLV("HPOUT3 Volume", ARIZONA_OUTPUT_PATH_CONFIG_3L, ARIZONA_OUTPUT_PATH_CONFIG_3R, ARIZONA_OUT3L_PGA_VOL_SHIFT, 0x34, 0x40, 0, ana_tlv), -- cgit v1.1 From fbe31057fafebdc2811a7101b8b4a0460f5417d1 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Fri, 1 Mar 2013 12:24:05 +0100 Subject: regulator: fixed regulator_bulk_enable unwinding code Unwinding code disables all successfully enabled regulators. Error is logged for every failed regulator. Signed-off-by: Andrzej Hajda Signed-off-by: Kyungmin Park Signed-off-by: Mark Brown --- drivers/regulator/core.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index da9782b..4a7790c 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -3057,9 +3057,13 @@ int regulator_bulk_enable(int num_consumers, return 0; err: - pr_err("Failed to enable %s: %d\n", consumers[i].supply, ret); - while (--i >= 0) - regulator_disable(consumers[i].consumer); + for (i = 0; i < num_consumers; i++) { + if (consumers[i].ret < 0) + pr_err("Failed to enable %s: %d\n", consumers[i].supply, + consumers[i].ret); + else + regulator_disable(consumers[i].consumer); + } return ret; } -- cgit v1.1 From a72d9002f80bffd7e4c7d60e5a9caa0cddffe894 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 28 Feb 2013 10:34:23 +0800 Subject: xen/xen-blkback: preq.dev is used without initialized If call xen_vbd_translate failed, the preq.dev will be not initialized. Use blkif->vbd.pdevice instead (still better to print relative info). Note that before commit 01c681d4c70d64cb72142a2823f27c4146a02e63 (xen/blkback: Don't trust the handle from the frontend.) the value bogus, as it was the guest provided value from req->u.rw.handle rather than the actual device. Signed-off-by: Chen Gang Acked-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index de1f319..6d1cc3d 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -904,7 +904,8 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif, pr_debug(DRV_PFX "access denied: %s of [%llu,%llu] on dev=%04x\n", operation == READ ? "read" : "write", preq.sector_number, - preq.sector_number + preq.nr_sects, preq.dev); + preq.sector_number + preq.nr_sects, + blkif->vbd.pdevice); goto fail_response; } -- cgit v1.1 From 645e77def93f1dd0e211c7244fbe152dac8a7100 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 1 Mar 2013 14:03:49 +0100 Subject: nl80211: increase wiphy dump size dynamically Given a device with many channels capabilities the wiphy information can still overflow even though its size in 3.9 was reduced to 3.8 levels. For new userspace and kernel 3.10 we're going to implement a new "split dump" protocol that can use multiple messages per wiphy. For now though, add a workaround to be able to send more information to userspace. Since generic netlink doesn't have a way to set the minimum dump size globally, and we wouldn't really want to set it globally anyway, increase the size only when needed, as described in the comments. As userspace might not be prepared for large buffers, we can only use 4k. Also increase the size for the get_wiphy command. Signed-off-by: Johannes Berg --- net/wireless/nl80211.c | 30 +++++++++++++++++++++++++----- 1 file changed, 25 insertions(+), 5 deletions(-) diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 7a7b621..d44ab21 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -1307,7 +1307,7 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 portid, u32 seq, int flag static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) { - int idx = 0; + int idx = 0, ret; int start = cb->args[0]; struct cfg80211_registered_device *dev; @@ -1317,9 +1317,29 @@ static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) continue; if (++idx <= start) continue; - if (nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, NLM_F_MULTI, - dev) < 0) { + ret = nl80211_send_wiphy(skb, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, NLM_F_MULTI, + dev); + if (ret < 0) { + /* + * If sending the wiphy data didn't fit (ENOBUFS or + * EMSGSIZE returned), this SKB is still empty (so + * it's not too big because another wiphy dataset is + * already in the skb) and we've not tried to adjust + * the dump allocation yet ... then adjust the alloc + * size to be bigger, and return 1 but with the empty + * skb. This results in an empty message being RX'ed + * in userspace, but that is ignored. + * + * We can then retry with the larger buffer. + */ + if ((ret == -ENOBUFS || ret == -EMSGSIZE) && + !skb->len && + cb->min_dump_alloc < 4096) { + cb->min_dump_alloc = 4096; + mutex_unlock(&cfg80211_mutex); + return 1; + } idx--; break; } @@ -1336,7 +1356,7 @@ static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) struct sk_buff *msg; struct cfg80211_registered_device *dev = info->user_ptr[0]; - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + msg = nlmsg_new(4096, GFP_KERNEL); if (!msg) return -ENOMEM; -- cgit v1.1 From 7cbf9d017dbb5e3276de7d527925d42d4c11e732 Mon Sep 17 00:00:00 2001 From: Marco Porsch Date: Fri, 1 Mar 2013 16:01:18 +0100 Subject: mac80211: fix oops on mesh PS broadcast forwarding Introduced with de74a1d9032f4d37ea453ad2a647e1aff4cd2591 "mac80211: fix WPA with VLAN on AP side with ps-sta". Apparently overwrites the sdata pointer with non-valid data in the case of mesh. Fix this by checking for IFTYPE_AP_VLAN. Signed-off-by: Marco Porsch Signed-off-by: Johannes Berg --- net/mac80211/tx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index c592a41..0d74f24 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -2755,7 +2755,8 @@ ieee80211_get_buffered_bc(struct ieee80211_hw *hw, cpu_to_le16(IEEE80211_FCTL_MOREDATA); } - sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev); + if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN) + sdata = IEEE80211_DEV_TO_SUB_IF(skb->dev); if (!ieee80211_tx_prepare(sdata, &tx, skb)) break; dev_kfree_skb_any(skb); -- cgit v1.1 From 24af717c35189f7a83c34e637256ccb7295a617b Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 1 Mar 2013 17:33:18 +0100 Subject: mac80211: fix VHT MCS calculation The VHT MCSes we advertise to the AP were supposed to be restricted to the AP, but due to a bug in the logic mac80211 will advertise rates to the AP that aren't even supported by the local device. To fix this skip any adjustment if the NSS isn't supported at all. Signed-off-by: Johannes Berg --- net/mac80211/mlme.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index b756d29..1415774 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -647,6 +647,9 @@ static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata, our_mcs = (le16_to_cpu(vht_cap.vht_mcs.rx_mcs_map) & mask) >> shift; + if (our_mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED) + continue; + switch (ap_mcs) { default: if (our_mcs <= ap_mcs) -- cgit v1.1 From 8b82547e33e85fc24d4d172a93c796de1fefa81a Mon Sep 17 00:00:00 2001 From: Guillaume Nault Date: Fri, 1 Mar 2013 05:02:02 +0000 Subject: l2tp: Restore socket refcount when sendmsg succeeds The sendmsg() syscall handler for PPPoL2TP doesn't decrease the socket reference counter after successful transmissions. Any successful sendmsg() call from userspace will then increase the reference counter forever, thus preventing the kernel's session and tunnel data from being freed later on. The problem only happens when writing directly on L2TP sockets. PPP sockets attached to L2TP are unaffected as the PPP subsystem uses pppol2tp_xmit() which symmetrically increase/decrease reference counters. This patch adds the missing call to sock_put() before returning from pppol2tp_sendmsg(). Signed-off-by: Guillaume Nault Signed-off-by: David S. Miller --- net/l2tp/l2tp_ppp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 3f4e3af..6a53371 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -355,6 +355,7 @@ static int pppol2tp_sendmsg(struct kiocb *iocb, struct socket *sock, struct msgh l2tp_xmit_skb(session, skb, session->hdr_len); sock_put(ps->tunnel_sock); + sock_put(sk); return error; -- cgit v1.1 From d8c6f4b9b7848bca8babfc0ae43a50c8ab22fbb9 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 1 Mar 2013 07:44:08 +0000 Subject: ipv[4|6]: correct dropwatch false positive in local_deliver_finish I had a report recently of a user trying to use dropwatch to localise some frame loss, and they were getting false positives. Turned out they were using a user space SCTP stack that used raw sockets to grab frames. When we don't have a registered protocol for a given packet, we record it as a drop, even if a raw socket receieves the frame. We should only record the drop in the event a raw socket doesnt exist to receive the frames Tested by the reported successfully Signed-off-by: Neil Horman Reported-by: William Reich Tested-by: William Reich CC: "David S. Miller" CC: William Reich CC: eric.dumazet@gmail.com Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/ip_input.c | 6 ++++-- net/ipv6/ip6_input.c | 6 ++++-- 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index 87abd3e..2bdf802 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -228,9 +228,11 @@ static int ip_local_deliver_finish(struct sk_buff *skb) icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PROT_UNREACH, 0); } - } else + kfree_skb(skb); + } else { IP_INC_STATS_BH(net, IPSTATS_MIB_INDELIVERS); - kfree_skb(skb); + consume_skb(skb); + } } } out: diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index 5b10414..b1876e5 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -241,9 +241,11 @@ resubmit: icmpv6_send(skb, ICMPV6_PARAMPROB, ICMPV6_UNK_NEXTHDR, nhoff); } - } else + kfree_skb(skb); + } else { IP6_INC_STATS_BH(net, idev, IPSTATS_MIB_INDELIVERS); - kfree_skb(skb); + consume_skb(skb); + } } rcu_read_unlock(); return 0; -- cgit v1.1 From 81ce0dbc119fa31af21d02febde1cf923022d4d6 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 28 Feb 2013 19:27:43 +0000 Subject: sctp: use the passed in gfp flags instead GFP_KERNEL This patch doesn't change how the code works because in the current kernel gfp is always GFP_KERNEL. But gfp was obviously intended instead of GFP_KERNEL. Signed-off-by: Dan Carpenter Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/sctp/endpointola.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c index 73aad3d..9a680c0 100644 --- a/net/sctp/endpointola.c +++ b/net/sctp/endpointola.c @@ -155,7 +155,7 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep, /* SCTP-AUTH extensions*/ INIT_LIST_HEAD(&ep->endpoint_shared_keys); - null_key = sctp_auth_shkey_create(0, GFP_KERNEL); + null_key = sctp_auth_shkey_create(0, gfp); if (!null_key) goto nomem; -- cgit v1.1 From cb29529ea0030e60ef1bbbf8399a43d397a51526 Mon Sep 17 00:00:00 2001 From: Tkhai Kirill Date: Sat, 23 Feb 2013 23:01:15 +0000 Subject: sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option If a machine has X (X < 4) sunsu ports and cmdline option "console=ttySY" is passed, where X < Y <= 4, than the following panic happens: Unable to handle kernel NULL pointer dereference TPC: RPC: I7: Call Trace: [0000000000453a38] register_console+0x378/0x3e0 [0000000000576fa0] uart_add_one_port+0x2e0/0x340 [000000000057af40] su_probe+0x160/0x2e0 [00000000005b8a4c] platform_drv_probe+0xc/0x20 [00000000005b6c2c] driver_probe_device+0x12c/0x220 [00000000005b6da8] __driver_attach+0x88/0xa0 [00000000005b4df4] bus_for_each_dev+0x54/0xa0 [00000000005b5a54] bus_add_driver+0x154/0x260 [00000000005b7190] driver_register+0x50/0x180 [00000000006d250c] sunsu_init+0x18c/0x1e0 [00000000006c2668] do_one_initcall+0xe8/0x160 [00000000006c282c] kernel_init_freeable+0x12c/0x1e0 [0000000000603764] kernel_init+0x4/0x100 [0000000000405f64] ret_from_syscall+0x1c/0x2c [0000000000000000] (null) 1)Fix the panic; 2)Increment registered port number every successful probe. Signed-off-by: Kirill Tkhai CC: David Miller Signed-off-by: David S. Miller --- drivers/tty/serial/sunsu.c | 21 +++++++++------------ 1 file changed, 9 insertions(+), 12 deletions(-) diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c index e343d66..451687c 100644 --- a/drivers/tty/serial/sunsu.c +++ b/drivers/tty/serial/sunsu.c @@ -968,6 +968,7 @@ static struct uart_ops sunsu_pops = { #define UART_NR 4 static struct uart_sunsu_port sunsu_ports[UART_NR]; +static int nr_inst; /* Number of already registered ports */ #ifdef CONFIG_SERIO @@ -1337,13 +1338,8 @@ static int __init sunsu_console_setup(struct console *co, char *options) printk("Console: ttyS%d (SU)\n", (sunsu_reg.minor - 64) + co->index); - /* - * Check whether an invalid uart number has been specified, and - * if so, search for the first available port that does have - * console support. - */ - if (co->index >= UART_NR) - co->index = 0; + if (co->index > nr_inst) + return -ENODEV; port = &sunsu_ports[co->index].port; /* @@ -1408,7 +1404,6 @@ static enum su_type su_get_type(struct device_node *dp) static int su_probe(struct platform_device *op) { - static int inst; struct device_node *dp = op->dev.of_node; struct uart_sunsu_port *up; struct resource *rp; @@ -1418,16 +1413,16 @@ static int su_probe(struct platform_device *op) type = su_get_type(dp); if (type == SU_PORT_PORT) { - if (inst >= UART_NR) + if (nr_inst >= UART_NR) return -EINVAL; - up = &sunsu_ports[inst]; + up = &sunsu_ports[nr_inst]; } else { up = kzalloc(sizeof(*up), GFP_KERNEL); if (!up) return -ENOMEM; } - up->port.line = inst; + up->port.line = nr_inst; spin_lock_init(&up->port.lock); @@ -1461,6 +1456,8 @@ static int su_probe(struct platform_device *op) } dev_set_drvdata(&op->dev, up); + nr_inst++; + return 0; } @@ -1488,7 +1485,7 @@ static int su_probe(struct platform_device *op) dev_set_drvdata(&op->dev, up); - inst++; + nr_inst++; return 0; -- cgit v1.1 From bcabdef12da49878789464ad7239e97d83ea5ef5 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Fri, 15 Feb 2013 14:46:14 +0900 Subject: gpiolib: check descriptors validity before use Some functions dereferenced their GPIO descriptor argument without checking its validity first, potentially leading to an oops when given an invalid argument. This patch also makes gpio_get_value() more resilient when given an invalid GPIO, returning 0 instead of silently crashing. Signed-off-by: Alexandre Courbot Cc: Ryan Mallon Signed-off-by: Grant Likely --- drivers/gpio/gpiolib.c | 112 ++++++++++++++++++++++++++++--------------------- 1 file changed, 65 insertions(+), 47 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index fff9786..1a8a7a8 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -174,7 +174,7 @@ static int gpio_ensure_requested(struct gpio_desc *desc) /* caller holds gpio_lock *OR* gpio is marked as requested */ static struct gpio_chip *gpiod_to_chip(struct gpio_desc *desc) { - return desc->chip; + return desc ? desc->chip : NULL; } struct gpio_chip *gpio_to_chip(unsigned gpio) @@ -654,6 +654,11 @@ static ssize_t export_store(struct class *class, goto done; desc = gpio_to_desc(gpio); + /* reject invalid GPIOs */ + if (!desc) { + pr_warn("%s: invalid GPIO %ld\n", __func__, gpio); + return -EINVAL; + } /* No extra locking here; FLAG_SYSFS just signifies that the * request and export were done by on behalf of userspace, so @@ -690,12 +695,14 @@ static ssize_t unexport_store(struct class *class, if (status < 0) goto done; - status = -EINVAL; - desc = gpio_to_desc(gpio); /* reject bogus commands (gpio_unexport ignores them) */ - if (!desc) - goto done; + if (!desc) { + pr_warn("%s: invalid GPIO %ld\n", __func__, gpio); + return -EINVAL; + } + + status = -EINVAL; /* No extra locking here; FLAG_SYSFS just signifies that the * request and export were done by on behalf of userspace, so @@ -846,8 +853,10 @@ static int gpiod_export_link(struct device *dev, const char *name, { int status = -EINVAL; - if (!desc) - goto done; + if (!desc) { + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; + } mutex_lock(&sysfs_lock); @@ -865,7 +874,6 @@ static int gpiod_export_link(struct device *dev, const char *name, mutex_unlock(&sysfs_lock); -done: if (status) pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc), status); @@ -896,8 +904,10 @@ static int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value) struct device *dev = NULL; int status = -EINVAL; - if (!desc) - goto done; + if (!desc) { + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; + } mutex_lock(&sysfs_lock); @@ -914,7 +924,6 @@ static int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value) unlock: mutex_unlock(&sysfs_lock); -done: if (status) pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc), status); @@ -940,8 +949,8 @@ static void gpiod_unexport(struct gpio_desc *desc) struct device *dev = NULL; if (!desc) { - status = -EINVAL; - goto done; + pr_warn("%s: invalid GPIO\n", __func__); + return; } mutex_lock(&sysfs_lock); @@ -962,7 +971,7 @@ static void gpiod_unexport(struct gpio_desc *desc) device_unregister(dev); put_device(dev); } -done: + if (status) pr_debug("%s: gpio%d status %d\n", __func__, desc_to_gpio(desc), status); @@ -1384,12 +1393,13 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) int status = -EPROBE_DEFER; unsigned long flags; - spin_lock_irqsave(&gpio_lock, flags); - if (!desc) { - status = -EINVAL; - goto done; + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; } + + spin_lock_irqsave(&gpio_lock, flags); + chip = desc->chip; if (chip == NULL) goto done; @@ -1432,8 +1442,7 @@ static int gpiod_request(struct gpio_desc *desc, const char *label) done: if (status) pr_debug("_gpio_request: gpio-%d (%s) status %d\n", - desc ? desc_to_gpio(desc) : -1, - label ? : "?", status); + desc_to_gpio(desc), label ? : "?", status); spin_unlock_irqrestore(&gpio_lock, flags); return status; } @@ -1616,10 +1625,13 @@ static int gpiod_direction_input(struct gpio_desc *desc) int status = -EINVAL; int offset; + if (!desc) { + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; + } + spin_lock_irqsave(&gpio_lock, flags); - if (!desc) - goto fail; chip = desc->chip; if (!chip || !chip->get || !chip->direction_input) goto fail; @@ -1655,13 +1667,9 @@ lose: return status; fail: spin_unlock_irqrestore(&gpio_lock, flags); - if (status) { - int gpio = -1; - if (desc) - gpio = desc_to_gpio(desc); - pr_debug("%s: gpio-%d status %d\n", - __func__, gpio, status); - } + if (status) + pr_debug("%s: gpio-%d status %d\n", __func__, + desc_to_gpio(desc), status); return status; } @@ -1678,6 +1686,11 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value) int status = -EINVAL; int offset; + if (!desc) { + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; + } + /* Open drain pin should not be driven to 1 */ if (value && test_bit(FLAG_OPEN_DRAIN, &desc->flags)) return gpiod_direction_input(desc); @@ -1688,8 +1701,6 @@ static int gpiod_direction_output(struct gpio_desc *desc, int value) spin_lock_irqsave(&gpio_lock, flags); - if (!desc) - goto fail; chip = desc->chip; if (!chip || !chip->set || !chip->direction_output) goto fail; @@ -1725,13 +1736,9 @@ lose: return status; fail: spin_unlock_irqrestore(&gpio_lock, flags); - if (status) { - int gpio = -1; - if (desc) - gpio = desc_to_gpio(desc); - pr_debug("%s: gpio-%d status %d\n", - __func__, gpio, status); - } + if (status) + pr_debug("%s: gpio-%d status %d\n", __func__, + desc_to_gpio(desc), status); return status; } @@ -1753,10 +1760,13 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) int status = -EINVAL; int offset; + if (!desc) { + pr_warn("%s: invalid GPIO\n", __func__); + return -EINVAL; + } + spin_lock_irqsave(&gpio_lock, flags); - if (!desc) - goto fail; chip = desc->chip; if (!chip || !chip->set || !chip->set_debounce) goto fail; @@ -1776,13 +1786,9 @@ static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce) fail: spin_unlock_irqrestore(&gpio_lock, flags); - if (status) { - int gpio = -1; - if (desc) - gpio = desc_to_gpio(desc); - pr_debug("%s: gpio-%d status %d\n", - __func__, gpio, status); - } + if (status) + pr_debug("%s: gpio-%d status %d\n", __func__, + desc_to_gpio(desc), status); return status; } @@ -1830,6 +1836,8 @@ static int gpiod_get_value(struct gpio_desc *desc) int value; int offset; + if (!desc) + return 0; chip = desc->chip; offset = gpio_chip_hwgpio(desc); /* Should be using gpio_get_value_cansleep() */ @@ -1912,6 +1920,8 @@ static void gpiod_set_value(struct gpio_desc *desc, int value) { struct gpio_chip *chip; + if (!desc) + return; chip = desc->chip; /* Should be using gpio_set_value_cansleep() */ WARN_ON(chip->can_sleep); @@ -1940,6 +1950,8 @@ EXPORT_SYMBOL_GPL(__gpio_set_value); */ static int gpiod_cansleep(struct gpio_desc *desc) { + if (!desc) + return 0; /* only call this on GPIOs that are valid! */ return desc->chip->can_sleep; } @@ -1964,6 +1976,8 @@ static int gpiod_to_irq(struct gpio_desc *desc) struct gpio_chip *chip; int offset; + if (!desc) + return -EINVAL; chip = desc->chip; offset = gpio_chip_hwgpio(desc); return chip->to_irq ? chip->to_irq(chip, offset) : -ENXIO; @@ -1987,6 +2001,8 @@ static int gpiod_get_value_cansleep(struct gpio_desc *desc) int offset; might_sleep_if(extra_checks); + if (!desc) + return 0; chip = desc->chip; offset = gpio_chip_hwgpio(desc); value = chip->get ? chip->get(chip, offset) : 0; @@ -2005,6 +2021,8 @@ static void gpiod_set_value_cansleep(struct gpio_desc *desc, int value) struct gpio_chip *chip; might_sleep_if(extra_checks); + if (!desc) + return; chip = desc->chip; trace_gpio_value(desc_to_gpio(desc), 0, value); if (test_bit(FLAG_OPEN_DRAIN, &desc->flags)) -- cgit v1.1 From def634338d3ffb32fbe9b0a2d70cc24ef909cd4f Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Fri, 15 Feb 2013 14:46:15 +0900 Subject: gpiolib: use const parameters when possible Constify descriptor parameter of gpiod_* functions for those that should obviously not modify it. This includes value or direction get, cansleep, and IRQ number query. Signed-off-by: Alexandre Courbot Signed-off-by: Grant Likely --- drivers/gpio/gpiolib.c | 29 ++++++++++++++++------------- 1 file changed, 16 insertions(+), 13 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 1a8a7a8..a33bfc2 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -88,13 +88,14 @@ static int gpiod_request(struct gpio_desc *desc, const char *label); static void gpiod_free(struct gpio_desc *desc); static int gpiod_direction_input(struct gpio_desc *desc); static int gpiod_direction_output(struct gpio_desc *desc, int value); +static int gpiod_get_direction(const struct gpio_desc *desc); static int gpiod_set_debounce(struct gpio_desc *desc, unsigned debounce); -static int gpiod_get_value_cansleep(struct gpio_desc *desc); +static int gpiod_get_value_cansleep(const struct gpio_desc *desc); static void gpiod_set_value_cansleep(struct gpio_desc *desc, int value); -static int gpiod_get_value(struct gpio_desc *desc); +static int gpiod_get_value(const struct gpio_desc *desc); static void gpiod_set_value(struct gpio_desc *desc, int value); -static int gpiod_cansleep(struct gpio_desc *desc); -static int gpiod_to_irq(struct gpio_desc *desc); +static int gpiod_cansleep(const struct gpio_desc *desc); +static int gpiod_to_irq(const struct gpio_desc *desc); static int gpiod_export(struct gpio_desc *desc, bool direction_may_change); static int gpiod_export_link(struct device *dev, const char *name, struct gpio_desc *desc); @@ -172,7 +173,7 @@ static int gpio_ensure_requested(struct gpio_desc *desc) } /* caller holds gpio_lock *OR* gpio is marked as requested */ -static struct gpio_chip *gpiod_to_chip(struct gpio_desc *desc) +static struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) { return desc ? desc->chip : NULL; } @@ -207,7 +208,7 @@ static int gpiochip_find_base(int ngpio) } /* caller ensures gpio is valid and requested, chip->get_direction may sleep */ -static int gpiod_get_direction(struct gpio_desc *desc) +static int gpiod_get_direction(const struct gpio_desc *desc) { struct gpio_chip *chip; unsigned offset; @@ -223,11 +224,13 @@ static int gpiod_get_direction(struct gpio_desc *desc) if (status > 0) { /* GPIOF_DIR_IN, or other positive */ status = 1; - clear_bit(FLAG_IS_OUT, &desc->flags); + /* FLAG_IS_OUT is just a cache of the result of get_direction(), + * so it does not affect constness per se */ + clear_bit(FLAG_IS_OUT, &((struct gpio_desc *)desc)->flags); } if (status == 0) { /* GPIOF_DIR_OUT */ - set_bit(FLAG_IS_OUT, &desc->flags); + set_bit(FLAG_IS_OUT, &((struct gpio_desc *)desc)->flags); } return status; } @@ -263,7 +266,7 @@ static DEFINE_MUTEX(sysfs_lock); static ssize_t gpio_direction_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct gpio_desc *desc = dev_get_drvdata(dev); + const struct gpio_desc *desc = dev_get_drvdata(dev); ssize_t status; mutex_lock(&sysfs_lock); @@ -1830,7 +1833,7 @@ EXPORT_SYMBOL_GPL(gpio_set_debounce); * It returns the zero or nonzero value provided by the associated * gpio_chip.get() method; or zero if no such method is provided. */ -static int gpiod_get_value(struct gpio_desc *desc) +static int gpiod_get_value(const struct gpio_desc *desc) { struct gpio_chip *chip; int value; @@ -1948,7 +1951,7 @@ EXPORT_SYMBOL_GPL(__gpio_set_value); * This is used directly or indirectly to implement gpio_cansleep(). It * returns nonzero if access reading or writing the GPIO value can sleep. */ -static int gpiod_cansleep(struct gpio_desc *desc) +static int gpiod_cansleep(const struct gpio_desc *desc) { if (!desc) return 0; @@ -1971,7 +1974,7 @@ EXPORT_SYMBOL_GPL(__gpio_cansleep); * It returns the number of the IRQ signaled by this (input) GPIO, * or a negative errno. */ -static int gpiod_to_irq(struct gpio_desc *desc) +static int gpiod_to_irq(const struct gpio_desc *desc) { struct gpio_chip *chip; int offset; @@ -1994,7 +1997,7 @@ EXPORT_SYMBOL_GPL(__gpio_to_irq); * Common examples include ones connected to I2C or SPI chips. */ -static int gpiod_get_value_cansleep(struct gpio_desc *desc) +static int gpiod_get_value_cansleep(const struct gpio_desc *desc) { struct gpio_chip *chip; int value; -- cgit v1.1 From 24d7628fe8b10bb3770a11ddf71719613832a298 Mon Sep 17 00:00:00 2001 From: Alexandre Courbot Date: Fri, 15 Feb 2013 14:46:16 +0900 Subject: gpiolib: move comment to right function This comment applies to gpio_to_chip(), not gpiod_to_chip(). Signed-off-by: Alexandre Courbot Signed-off-by: Grant Likely --- drivers/gpio/gpiolib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a33bfc2..c2534d6 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -172,12 +172,12 @@ static int gpio_ensure_requested(struct gpio_desc *desc) return 0; } -/* caller holds gpio_lock *OR* gpio is marked as requested */ static struct gpio_chip *gpiod_to_chip(const struct gpio_desc *desc) { return desc ? desc->chip : NULL; } +/* caller holds gpio_lock *OR* gpio is marked as requested */ struct gpio_chip *gpio_to_chip(unsigned gpio) { return gpiod_to_chip(gpio_to_desc(gpio)); -- cgit v1.1 From e97f9b5277afeabb54892ebc6f68500098467ba1 Mon Sep 17 00:00:00 2001 From: Mika Westerberg Date: Wed, 27 Feb 2013 17:25:15 +0200 Subject: gpio/gpio-ich: fix ichx_gpio_check_available() return what callers expect ichx_gpio_check_available() returns either 0 or -ENXIO depending on whether the given GPIO is available or not. However, callers of this function treat the return value as boolean: ... if (!ichx_gpio_check_available(gpio, nr)) return -ENXIO; which erroneusly fails when the GPIO is available and not vice versa. Fix this by making the function return boolean as expected by the callers. Signed-off-by: Mika Westerberg Signed-off-by: Grant Likely --- drivers/gpio/gpio-ich.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c index 6f2306d..f9dbd50 100644 --- a/drivers/gpio/gpio-ich.c +++ b/drivers/gpio/gpio-ich.c @@ -128,9 +128,9 @@ static int ichx_read_bit(int reg, unsigned nr) return data & (1 << bit) ? 1 : 0; } -static int ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) +static bool ichx_gpio_check_available(struct gpio_chip *gpio, unsigned nr) { - return (ichx_priv.use_gpio & (1 << (nr / 32))) ? 0 : -ENXIO; + return ichx_priv.use_gpio & (1 << (nr / 32)); } static int ichx_gpio_direction_input(struct gpio_chip *gpio, unsigned nr) -- cgit v1.1 From a26302628ad164980493ab7768a05a7f3a8d8842 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 1 Mar 2013 13:07:00 +0000 Subject: iio:ad5064: Fix address of the second channel for ad5065/ad5045/ad5025 The ad5065, ad5045, ad5025 use address '3' for the second channel, so they need their own channel spec. Note that ad5064_sync_powerdown_mode() also needs to be slightly updated since it was relying on the fact that chan->address always equaled chan->channel. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5064.c | 49 ++++++++++++++++++++++++++++-------------------- 1 file changed, 29 insertions(+), 20 deletions(-) diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index 2fe1d4e..7b77708 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -27,7 +27,6 @@ #define AD5064_ADDR(x) ((x) << 20) #define AD5064_CMD(x) ((x) << 24) -#define AD5064_ADDR_DAC(chan) (chan) #define AD5064_ADDR_ALL_DAC 0xF #define AD5064_CMD_WRITE_INPUT_N 0x0 @@ -131,15 +130,15 @@ static int ad5064_write(struct ad5064_state *st, unsigned int cmd, } static int ad5064_sync_powerdown_mode(struct ad5064_state *st, - unsigned int channel) + const struct iio_chan_spec *chan) { unsigned int val; int ret; - val = (0x1 << channel); + val = (0x1 << chan->address); - if (st->pwr_down[channel]) - val |= st->pwr_down_mode[channel] << 8; + if (st->pwr_down[chan->channel]) + val |= st->pwr_down_mode[chan->channel] << 8; ret = ad5064_write(st, AD5064_CMD_POWERDOWN_DAC, 0, val, 0); @@ -169,7 +168,7 @@ static int ad5064_set_powerdown_mode(struct iio_dev *indio_dev, mutex_lock(&indio_dev->mlock); st->pwr_down_mode[chan->channel] = mode + 1; - ret = ad5064_sync_powerdown_mode(st, chan->channel); + ret = ad5064_sync_powerdown_mode(st, chan); mutex_unlock(&indio_dev->mlock); return ret; @@ -205,7 +204,7 @@ static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev, mutex_lock(&indio_dev->mlock); st->pwr_down[chan->channel] = pwr_down; - ret = ad5064_sync_powerdown_mode(st, chan->channel); + ret = ad5064_sync_powerdown_mode(st, chan); mutex_unlock(&indio_dev->mlock); return ret ? ret : len; } @@ -292,34 +291,44 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = { { }, }; -#define AD5064_CHANNEL(chan, bits) { \ +#define AD5064_CHANNEL(chan, addr, bits) { \ .type = IIO_VOLTAGE, \ .indexed = 1, \ .output = 1, \ .channel = (chan), \ .info_mask = IIO_CHAN_INFO_RAW_SEPARATE_BIT | \ IIO_CHAN_INFO_SCALE_SEPARATE_BIT, \ - .address = AD5064_ADDR_DAC(chan), \ + .address = addr, \ .scan_type = IIO_ST('u', (bits), 16, 20 - (bits)), \ .ext_info = ad5064_ext_info, \ } #define DECLARE_AD5064_CHANNELS(name, bits) \ const struct iio_chan_spec name[] = { \ - AD5064_CHANNEL(0, bits), \ - AD5064_CHANNEL(1, bits), \ - AD5064_CHANNEL(2, bits), \ - AD5064_CHANNEL(3, bits), \ - AD5064_CHANNEL(4, bits), \ - AD5064_CHANNEL(5, bits), \ - AD5064_CHANNEL(6, bits), \ - AD5064_CHANNEL(7, bits), \ + AD5064_CHANNEL(0, 0, bits), \ + AD5064_CHANNEL(1, 1, bits), \ + AD5064_CHANNEL(2, 2, bits), \ + AD5064_CHANNEL(3, 3, bits), \ + AD5064_CHANNEL(4, 4, bits), \ + AD5064_CHANNEL(5, 5, bits), \ + AD5064_CHANNEL(6, 6, bits), \ + AD5064_CHANNEL(7, 7, bits), \ +} + +#define DECLARE_AD5065_CHANNELS(name, bits) \ +const struct iio_chan_spec name[] = { \ + AD5064_CHANNEL(0, 0, bits), \ + AD5064_CHANNEL(1, 3, bits), \ } static DECLARE_AD5064_CHANNELS(ad5024_channels, 12); static DECLARE_AD5064_CHANNELS(ad5044_channels, 14); static DECLARE_AD5064_CHANNELS(ad5064_channels, 16); +static DECLARE_AD5065_CHANNELS(ad5025_channels, 12); +static DECLARE_AD5065_CHANNELS(ad5045_channels, 14); +static DECLARE_AD5065_CHANNELS(ad5065_channels, 16); + static const struct ad5064_chip_info ad5064_chip_info_tbl[] = { [ID_AD5024] = { .shared_vref = false, @@ -328,7 +337,7 @@ static const struct ad5064_chip_info ad5064_chip_info_tbl[] = { }, [ID_AD5025] = { .shared_vref = false, - .channels = ad5024_channels, + .channels = ad5025_channels, .num_channels = 2, }, [ID_AD5044] = { @@ -338,7 +347,7 @@ static const struct ad5064_chip_info ad5064_chip_info_tbl[] = { }, [ID_AD5045] = { .shared_vref = false, - .channels = ad5044_channels, + .channels = ad5045_channels, .num_channels = 2, }, [ID_AD5064] = { @@ -353,7 +362,7 @@ static const struct ad5064_chip_info ad5064_chip_info_tbl[] = { }, [ID_AD5065] = { .shared_vref = false, - .channels = ad5064_channels, + .channels = ad5065_channels, .num_channels = 2, }, [ID_AD5628_1] = { -- cgit v1.1 From c5ef717a774b326a6708e2e14ddf9957b619d5c4 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 1 Mar 2013 13:07:00 +0000 Subject: iio:ad5064: Fix off by one in DAC value range check The DAC value range check allows values one larger than the maximum value, which effectively results in setting the DAC value to 0. This patch fixes the issue. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5064.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index 7b77708..f724a54 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -257,7 +257,7 @@ static int ad5064_write_raw(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_RAW: - if (val > (1 << chan->scan_type.realbits) || val < 0) + if (val >= (1 << chan->scan_type.realbits) || val < 0) return -EINVAL; mutex_lock(&indio_dev->mlock); -- cgit v1.1 From f77ae9d8fd4b8ed984f33e996c62f2dfd9f73b37 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Fri, 1 Mar 2013 13:07:00 +0000 Subject: iio:ad5064: Initialize register cache correctly Initialize the register cache to the proper mid-scale value based on the resolution of the device. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- drivers/iio/dac/ad5064.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index f724a54..74f2d52 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -438,6 +438,7 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type, { struct iio_dev *indio_dev; struct ad5064_state *st; + unsigned int midscale; unsigned int i; int ret; @@ -474,11 +475,6 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type, goto error_free_reg; } - for (i = 0; i < st->chip_info->num_channels; ++i) { - st->pwr_down_mode[i] = AD5064_LDAC_PWRDN_1K; - st->dac_cache[i] = 0x8000; - } - indio_dev->dev.parent = dev; indio_dev->name = name; indio_dev->info = &ad5064_info; @@ -486,6 +482,13 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type, indio_dev->channels = st->chip_info->channels; indio_dev->num_channels = st->chip_info->num_channels; + midscale = (1 << indio_dev->channels[0].scan_type.realbits) / 2; + + for (i = 0; i < st->chip_info->num_channels; ++i) { + st->pwr_down_mode[i] = AD5064_LDAC_PWRDN_1K; + st->dac_cache[i] = midscale; + } + ret = iio_device_register(indio_dev); if (ret) goto error_disable_reg; -- cgit v1.1 From da0d4ef27ca1407e64b2ac9e75d2ca60bb83b618 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 1 Mar 2013 15:21:00 +0000 Subject: iio/imu: inv_mpu6050 depends on IIO_BUFFER MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix: drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c: In function ‘inv_mpu6050_read_fifo’: drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c:176:3: error: implicit declaration of function ‘iio_push_to_buffers’ [-Werror=implicit-function-declaration] Signed-off-by: Guenter Roeck Signed-off-by: Jonathan Cameron --- drivers/iio/imu/inv_mpu6050/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig index b5cfa3a..361b232 100644 --- a/drivers/iio/imu/inv_mpu6050/Kconfig +++ b/drivers/iio/imu/inv_mpu6050/Kconfig @@ -5,6 +5,7 @@ config INV_MPU6050_IIO tristate "Invensense MPU6050 devices" depends on I2C && SYSFS + select IIO_BUFFER select IIO_TRIGGERED_BUFFER help This driver supports the Invensense MPU6050 devices. -- cgit v1.1 From 5a4d729139b4e94f670288a3505657311f95c886 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 1 Mar 2013 15:57:00 +0000 Subject: iio: Fix build error seen if IIO_TRIGGER is defined but IIO_BUFFER is not MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If CONFIG_IIO_TRIGGER is defined but CONFIG_IIO_BUFFER is not, the following build error is seen. drivers/iio/common/st_sensors/st_sensors_trigger.c:21:5: error: redefinition of ‘st_sensors_allocate_trigger’ In file included from drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0: include/linux/iio/common/st_sensors.h:239:19: note: previous definition of ‘st_sensors_allocate_trigger’ was here drivers/iio/common/st_sensors/st_sensors_trigger.c:65:6: error: redefinition of ‘st_sensors_deallocate_trigger’ In file included from drivers/iio/common/st_sensors/st_sensors_trigger.c:18:0: include/linux/iio/common/st_sensors.h:244:20: note: previous definition of ‘st_sensors_deallocate_trigger’ was here This occurs because st_sensors_deallocate_trigger is built if CONFIG_IIO_TRIGGER is defined, but the dummy function is compiled if CONFIG_IIO_BUFFER is defined. Signed-off-by: Guenter Roeck Acked-by: Denis Ciocca Signed-off-by: Jonathan Cameron --- include/linux/iio/common/st_sensors.h | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h index 1f86a97..8bd12be 100644 --- a/include/linux/iio/common/st_sensors.h +++ b/include/linux/iio/common/st_sensors.h @@ -227,14 +227,17 @@ struct st_sensor_data { }; #ifdef CONFIG_IIO_BUFFER +irqreturn_t st_sensors_trigger_handler(int irq, void *p); + +int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); +#endif + +#ifdef CONFIG_IIO_TRIGGER int st_sensors_allocate_trigger(struct iio_dev *indio_dev, const struct iio_trigger_ops *trigger_ops); void st_sensors_deallocate_trigger(struct iio_dev *indio_dev); -irqreturn_t st_sensors_trigger_handler(int irq, void *p); - -int st_sensors_get_buffer_element(struct iio_dev *indio_dev, u8 *buf); #else static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev, const struct iio_trigger_ops *trigger_ops) -- cgit v1.1 From 801d929ca7d935ee199fd61d8ef914f51e892270 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sat, 2 Mar 2013 19:05:47 +0100 Subject: mac80211: another fix for idle handling in monitor mode When setting a monitor interface up or down, the idle state needs to be recalculated, otherwise the hardware will just stay in its previous idle state. Signed-off-by: Felix Fietkau Signed-off-by: Johannes Berg --- net/mac80211/iface.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 640afab..baaa860 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -541,6 +541,9 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up) ieee80211_adjust_monitor_flags(sdata, 1); ieee80211_configure_filter(local); + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); netif_carrier_on(dev); break; @@ -812,6 +815,9 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, ieee80211_adjust_monitor_flags(sdata, -1); ieee80211_configure_filter(local); + mutex_lock(&local->mtx); + ieee80211_recalc_idle(local); + mutex_unlock(&local->mtx); break; case NL80211_IFTYPE_P2P_DEVICE: /* relies on synchronize_rcu() below */ -- cgit v1.1 From f9caed59f801f77a2844ab04d2dea8df33ac862b Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Mon, 18 Feb 2013 21:51:07 +0000 Subject: netfilter: nf_ct_helper: Fix logging for dropped packets Update nf_ct_helper_log to emit args along with the format. Signed-off-by: Joe Perches Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_helper.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c index 013cdf6..bb4188f 100644 --- a/net/netfilter/nf_conntrack_helper.c +++ b/net/netfilter/nf_conntrack_helper.c @@ -341,6 +341,13 @@ void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct, { const struct nf_conn_help *help; const struct nf_conntrack_helper *helper; + struct va_format vaf; + va_list args; + + va_start(args, fmt); + + vaf.fmt = fmt; + vaf.va = &args; /* Called from the helper function, this call never fails */ help = nfct_help(ct); @@ -349,7 +356,9 @@ void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct, helper = rcu_dereference(help->helper); nf_log_packet(nf_ct_l3num(ct), 0, skb, NULL, NULL, NULL, - "nf_ct_%s: dropping packet: %s ", helper->name, fmt); + "nf_ct_%s: dropping packet: %pV ", helper->name, &vaf); + + va_end(args); } EXPORT_SYMBOL_GPL(nf_ct_helper_log); -- cgit v1.1 From a29564289973a519dae0d8936d2e4c414416e2e0 Mon Sep 17 00:00:00 2001 From: Daniel Hellstrom Date: Thu, 28 Feb 2013 04:31:55 +0000 Subject: sparc,leon: fix GRPCI2 device0 PCI config space access bus=0 slot=0 (device0) was used internally by the PCI host driver to access the PCI host controller itself, however that had the effect that PCI device0 was never accessible, which is wrong when the motherboard has connected PCI AD16 signal to a slot. A special case for accessing the PCI host controller itself is added with this patch, by setting bus to TGT. Signed-off-by: Daniel Hellstrom Signed-off-by: David S. Miller --- arch/sparc/kernel/leon_pci_grpci2.c | 41 +++++++++++++++++++++++-------------- 1 file changed, 26 insertions(+), 15 deletions(-) diff --git a/arch/sparc/kernel/leon_pci_grpci2.c b/arch/sparc/kernel/leon_pci_grpci2.c index fc43208..4d14871 100644 --- a/arch/sparc/kernel/leon_pci_grpci2.c +++ b/arch/sparc/kernel/leon_pci_grpci2.c @@ -186,6 +186,8 @@ struct grpci2_cap_first { #define CAP9_IOMAP_OFS 0x20 #define CAP9_BARSIZE_OFS 0x24 +#define TGT 256 + struct grpci2_priv { struct leon_pci_info info; /* must be on top of this structure */ struct grpci2_regs *regs; @@ -237,8 +239,12 @@ static int grpci2_cfg_r32(struct grpci2_priv *priv, unsigned int bus, if (where & 0x3) return -EINVAL; - if (bus == 0 && PCI_SLOT(devfn) != 0) - devfn += (0x8 * 6); + if (bus == 0) { + devfn += (0x8 * 6); /* start at AD16=Device0 */ + } else if (bus == TGT) { + bus = 0; + devfn = 0; /* special case: bridge controller itself */ + } /* Select bus */ spin_lock_irqsave(&grpci2_dev_lock, flags); @@ -303,8 +309,12 @@ static int grpci2_cfg_w32(struct grpci2_priv *priv, unsigned int bus, if (where & 0x3) return -EINVAL; - if (bus == 0 && PCI_SLOT(devfn) != 0) - devfn += (0x8 * 6); + if (bus == 0) { + devfn += (0x8 * 6); /* start at AD16=Device0 */ + } else if (bus == TGT) { + bus = 0; + devfn = 0; /* special case: bridge controller itself */ + } /* Select bus */ spin_lock_irqsave(&grpci2_dev_lock, flags); @@ -368,7 +378,7 @@ static int grpci2_read_config(struct pci_bus *bus, unsigned int devfn, unsigned int busno = bus->number; int ret; - if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0)) { + if (PCI_SLOT(devfn) > 15 || busno > 255) { *val = ~0; return 0; } @@ -406,7 +416,7 @@ static int grpci2_write_config(struct pci_bus *bus, unsigned int devfn, struct grpci2_priv *priv = grpci2priv; unsigned int busno = bus->number; - if (PCI_SLOT(devfn) > 15 || (PCI_SLOT(devfn) == 0 && busno == 0)) + if (PCI_SLOT(devfn) > 15 || busno > 255) return 0; #ifdef GRPCI2_DEBUG_CFGACCESS @@ -578,15 +588,15 @@ void grpci2_hw_init(struct grpci2_priv *priv) REGSTORE(regs->ahbmst_map[i], priv->pci_area); /* Get the GRPCI2 Host PCI ID */ - grpci2_cfg_r32(priv, 0, 0, PCI_VENDOR_ID, &priv->pciid); + grpci2_cfg_r32(priv, TGT, 0, PCI_VENDOR_ID, &priv->pciid); /* Get address to first (always defined) capability structure */ - grpci2_cfg_r8(priv, 0, 0, PCI_CAPABILITY_LIST, &capptr); + grpci2_cfg_r8(priv, TGT, 0, PCI_CAPABILITY_LIST, &capptr); /* Enable/Disable Byte twisting */ - grpci2_cfg_r32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, &io_map); + grpci2_cfg_r32(priv, TGT, 0, capptr+CAP9_IOMAP_OFS, &io_map); io_map = (io_map & ~0x1) | (priv->bt_enabled ? 1 : 0); - grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_IOMAP_OFS, io_map); + grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_IOMAP_OFS, io_map); /* Setup the Host's PCI Target BARs for other peripherals to access, * and do DMA to the host's memory. The target BARs can be sized and @@ -617,17 +627,18 @@ void grpci2_hw_init(struct grpci2_priv *priv) pciadr = 0; } } - grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BARSIZE_OFS+i*4, bar_sz); - grpci2_cfg_w32(priv, 0, 0, PCI_BASE_ADDRESS_0+i*4, pciadr); - grpci2_cfg_w32(priv, 0, 0, capptr+CAP9_BAR_OFS+i*4, ahbadr); + grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_BARSIZE_OFS+i*4, + bar_sz); + grpci2_cfg_w32(priv, TGT, 0, PCI_BASE_ADDRESS_0+i*4, pciadr); + grpci2_cfg_w32(priv, TGT, 0, capptr+CAP9_BAR_OFS+i*4, ahbadr); printk(KERN_INFO " TGT BAR[%d]: 0x%08x (PCI)-> 0x%08x\n", i, pciadr, ahbadr); } /* set as bus master and enable pci memory responses */ - grpci2_cfg_r32(priv, 0, 0, PCI_COMMAND, &data); + grpci2_cfg_r32(priv, TGT, 0, PCI_COMMAND, &data); data |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); - grpci2_cfg_w32(priv, 0, 0, PCI_COMMAND, data); + grpci2_cfg_w32(priv, TGT, 0, PCI_COMMAND, data); /* Enable Error respone (CPU-TRAP) on illegal memory access. */ REGSTORE(regs->ctrl, CTRL_ER | CTRL_PE); -- cgit v1.1 From e2ca90c276e1fc410d7cd3c1a4eee245ec902a20 Mon Sep 17 00:00:00 2001 From: Freddy Xin Date: Sat, 2 Mar 2013 00:41:11 +0000 Subject: ax88179_178a: ASIX AX88179_178A USB 3.0/2.0 to gigabit ethernet adapter driver This is a resubmission. Added kfree() in ax88179_get_eeprom to prevent memory leakage. Modified "__le16 rxctl" to "u16 rxctl" in "struct ax88179_data" and removed pointless casts. Removed asix_init and asix_exit functions and added "module_usb_driver(ax88179_178a_driver)". Fixed endianness issue on big endian systems and verified this driver on iBook G4. Removed steps that change net->features in ax88179_set_features function. Added "const" to ethtool_ops structure and fixed the coding style of AX88179_BULKIN_SIZE array. Fixed the issue that the default MTU is not 1500. Added ax88179_change_mtu function and enabled the hardware jumbo frame function to support an MTU higher than 1500. Fixed indentation and empty line coding style errors. The _nopm version usb functions were added to access register in suspend and resume functions. Serveral variables allocted dynamically were removed and replaced by stack variables. ax88179_get_eeprom were modified from asix_get_eeprom in asix_common. This patch adds a driver for ASIX's AX88179 family of USB 3.0/2.0 to gigabit ethernet adapters. It's based on the AX88xxx driver but the usb commands used to access registers for AX88179 are completely different. This driver had been verified on x86 system with AX88179/AX88178A and Sitcomm LN-032 USB dongles. Signed-off-by: Freddy Xin Signed-off-by: David S. Miller --- drivers/net/usb/Kconfig | 18 + drivers/net/usb/Makefile | 1 + drivers/net/usb/ax88179_178a.c | 1448 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 1467 insertions(+) create mode 100644 drivers/net/usb/ax88179_178a.c diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index da92ed3..3b6e9b8 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -156,6 +156,24 @@ config USB_NET_AX8817X This driver creates an interface named "ethX", where X depends on what other networking devices you have in use. +config USB_NET_AX88179_178A + tristate "ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet" + depends on USB_USBNET + select CRC32 + select PHYLIB + default y + help + This option adds support for ASIX AX88179 based USB 3.0/2.0 + to Gigabit Ethernet adapters. + + This driver should work with at least the following devices: + * ASIX AX88179 + * ASIX AX88178A + * Sitcomm LN-032 + + This driver creates an interface named "ethX", where X depends on + what other networking devices you have in use. + config USB_NET_CDCETHER tristate "CDC Ethernet support (smart devices such as cable modems)" depends on USB_USBNET diff --git a/drivers/net/usb/Makefile b/drivers/net/usb/Makefile index 4786913..119b06c 100644 --- a/drivers/net/usb/Makefile +++ b/drivers/net/usb/Makefile @@ -9,6 +9,7 @@ obj-$(CONFIG_USB_RTL8150) += rtl8150.o obj-$(CONFIG_USB_HSO) += hso.o obj-$(CONFIG_USB_NET_AX8817X) += asix.o asix-y := asix_devices.o asix_common.o ax88172a.o +obj-$(CONFIG_USB_NET_AX88179_178A) += ax88179_178a.o obj-$(CONFIG_USB_NET_CDCETHER) += cdc_ether.o obj-$(CONFIG_USB_NET_CDC_EEM) += cdc_eem.o obj-$(CONFIG_USB_NET_DM9601) += dm9601.o diff --git a/drivers/net/usb/ax88179_178a.c b/drivers/net/usb/ax88179_178a.c new file mode 100644 index 0000000..71c27d8 --- /dev/null +++ b/drivers/net/usb/ax88179_178a.c @@ -0,0 +1,1448 @@ +/* + * ASIX AX88179/178A USB 3.0/2.0 to Gigabit Ethernet Devices + * + * Copyright (C) 2011-2013 ASIX + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include +#include +#include +#include +#include +#include + +#define AX88179_PHY_ID 0x03 +#define AX_EEPROM_LEN 0x100 +#define AX88179_EEPROM_MAGIC 0x17900b95 +#define AX_MCAST_FLTSIZE 8 +#define AX_MAX_MCAST 64 +#define AX_INT_PPLS_LINK ((u32)BIT(16)) +#define AX_RXHDR_L4_TYPE_MASK 0x1c +#define AX_RXHDR_L4_TYPE_UDP 4 +#define AX_RXHDR_L4_TYPE_TCP 16 +#define AX_RXHDR_L3CSUM_ERR 2 +#define AX_RXHDR_L4CSUM_ERR 1 +#define AX_RXHDR_CRC_ERR ((u32)BIT(31)) +#define AX_RXHDR_DROP_ERR ((u32)BIT(30)) +#define AX_ACCESS_MAC 0x01 +#define AX_ACCESS_PHY 0x02 +#define AX_ACCESS_EEPROM 0x04 +#define AX_ACCESS_EFUS 0x05 +#define AX_PAUSE_WATERLVL_HIGH 0x54 +#define AX_PAUSE_WATERLVL_LOW 0x55 + +#define PHYSICAL_LINK_STATUS 0x02 + #define AX_USB_SS 0x04 + #define AX_USB_HS 0x02 + +#define GENERAL_STATUS 0x03 +/* Check AX88179 version. UA1:Bit2 = 0, UA2:Bit2 = 1 */ + #define AX_SECLD 0x04 + +#define AX_SROM_ADDR 0x07 +#define AX_SROM_CMD 0x0a + #define EEP_RD 0x04 + #define EEP_BUSY 0x10 + +#define AX_SROM_DATA_LOW 0x08 +#define AX_SROM_DATA_HIGH 0x09 + +#define AX_RX_CTL 0x0b + #define AX_RX_CTL_DROPCRCERR 0x0100 + #define AX_RX_CTL_IPE 0x0200 + #define AX_RX_CTL_START 0x0080 + #define AX_RX_CTL_AP 0x0020 + #define AX_RX_CTL_AM 0x0010 + #define AX_RX_CTL_AB 0x0008 + #define AX_RX_CTL_AMALL 0x0002 + #define AX_RX_CTL_PRO 0x0001 + #define AX_RX_CTL_STOP 0x0000 + +#define AX_NODE_ID 0x10 +#define AX_MULFLTARY 0x16 + +#define AX_MEDIUM_STATUS_MODE 0x22 + #define AX_MEDIUM_GIGAMODE 0x01 + #define AX_MEDIUM_FULL_DUPLEX 0x02 + #define AX_MEDIUM_ALWAYS_ONE 0x04 + #define AX_MEDIUM_EN_125MHZ 0x08 + #define AX_MEDIUM_RXFLOW_CTRLEN 0x10 + #define AX_MEDIUM_TXFLOW_CTRLEN 0x20 + #define AX_MEDIUM_RECEIVE_EN 0x100 + #define AX_MEDIUM_PS 0x200 + #define AX_MEDIUM_JUMBO_EN 0x8040 + +#define AX_MONITOR_MOD 0x24 + #define AX_MONITOR_MODE_RWLC 0x02 + #define AX_MONITOR_MODE_RWMP 0x04 + #define AX_MONITOR_MODE_PMEPOL 0x20 + #define AX_MONITOR_MODE_PMETYPE 0x40 + +#define AX_GPIO_CTRL 0x25 + #define AX_GPIO_CTRL_GPIO3EN 0x80 + #define AX_GPIO_CTRL_GPIO2EN 0x40 + #define AX_GPIO_CTRL_GPIO1EN 0x20 + +#define AX_PHYPWR_RSTCTL 0x26 + #define AX_PHYPWR_RSTCTL_BZ 0x0010 + #define AX_PHYPWR_RSTCTL_IPRL 0x0020 + #define AX_PHYPWR_RSTCTL_AT 0x1000 + +#define AX_RX_BULKIN_QCTRL 0x2e +#define AX_CLK_SELECT 0x33 + #define AX_CLK_SELECT_BCS 0x01 + #define AX_CLK_SELECT_ACS 0x02 + #define AX_CLK_SELECT_ULR 0x08 + +#define AX_RXCOE_CTL 0x34 + #define AX_RXCOE_IP 0x01 + #define AX_RXCOE_TCP 0x02 + #define AX_RXCOE_UDP 0x04 + #define AX_RXCOE_TCPV6 0x20 + #define AX_RXCOE_UDPV6 0x40 + +#define AX_TXCOE_CTL 0x35 + #define AX_TXCOE_IP 0x01 + #define AX_TXCOE_TCP 0x02 + #define AX_TXCOE_UDP 0x04 + #define AX_TXCOE_TCPV6 0x20 + #define AX_TXCOE_UDPV6 0x40 + +#define AX_LEDCTRL 0x73 + +#define GMII_PHY_PHYSR 0x11 + #define GMII_PHY_PHYSR_SMASK 0xc000 + #define GMII_PHY_PHYSR_GIGA 0x8000 + #define GMII_PHY_PHYSR_100 0x4000 + #define GMII_PHY_PHYSR_FULL 0x2000 + #define GMII_PHY_PHYSR_LINK 0x400 + +#define GMII_LED_ACT 0x1a + #define GMII_LED_ACTIVE_MASK 0xff8f + #define GMII_LED0_ACTIVE BIT(4) + #define GMII_LED1_ACTIVE BIT(5) + #define GMII_LED2_ACTIVE BIT(6) + +#define GMII_LED_LINK 0x1c + #define GMII_LED_LINK_MASK 0xf888 + #define GMII_LED0_LINK_10 BIT(0) + #define GMII_LED0_LINK_100 BIT(1) + #define GMII_LED0_LINK_1000 BIT(2) + #define GMII_LED1_LINK_10 BIT(4) + #define GMII_LED1_LINK_100 BIT(5) + #define GMII_LED1_LINK_1000 BIT(6) + #define GMII_LED2_LINK_10 BIT(8) + #define GMII_LED2_LINK_100 BIT(9) + #define GMII_LED2_LINK_1000 BIT(10) + #define LED0_ACTIVE BIT(0) + #define LED0_LINK_10 BIT(1) + #define LED0_LINK_100 BIT(2) + #define LED0_LINK_1000 BIT(3) + #define LED0_FD BIT(4) + #define LED0_USB3_MASK 0x001f + #define LED1_ACTIVE BIT(5) + #define LED1_LINK_10 BIT(6) + #define LED1_LINK_100 BIT(7) + #define LED1_LINK_1000 BIT(8) + #define LED1_FD BIT(9) + #define LED1_USB3_MASK 0x03e0 + #define LED2_ACTIVE BIT(10) + #define LED2_LINK_1000 BIT(13) + #define LED2_LINK_100 BIT(12) + #define LED2_LINK_10 BIT(11) + #define LED2_FD BIT(14) + #define LED_VALID BIT(15) + #define LED2_USB3_MASK 0x7c00 + +#define GMII_PHYPAGE 0x1e +#define GMII_PHY_PAGE_SELECT 0x1f + #define GMII_PHY_PGSEL_EXT 0x0007 + #define GMII_PHY_PGSEL_PAGE0 0x0000 + +struct ax88179_data { + u16 rxctl; + u16 reserved; +}; + +struct ax88179_int_data { + __le32 intdata1; + __le32 intdata2; +}; + +static const struct { + unsigned char ctrl, timer_l, timer_h, size, ifg; +} AX88179_BULKIN_SIZE[] = { + {7, 0x4f, 0, 0x12, 0xff}, + {7, 0x20, 3, 0x16, 0xff}, + {7, 0xae, 7, 0x18, 0xff}, + {7, 0xcc, 0x4c, 0x18, 8}, +}; + +static int __ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data, int in_pm) +{ + int ret; + int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16); + + BUG_ON(!dev); + + if (!in_pm) + fn = usbnet_read_cmd; + else + fn = usbnet_read_cmd_nopm; + + ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, data, size); + + if (unlikely(ret < 0)) + netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n", + index, ret); + + return ret; +} + +static int __ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data, int in_pm) +{ + int ret; + int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16); + + BUG_ON(!dev); + + if (!in_pm) + fn = usbnet_write_cmd; + else + fn = usbnet_write_cmd_nopm; + + ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, data, size); + + if (unlikely(ret < 0)) + netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n", + index, ret); + + return ret; +} + +static void ax88179_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, + u16 index, u16 size, void *data) +{ + u16 buf; + + if (2 == size) { + buf = *((u16 *)data); + cpu_to_le16s(&buf); + usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_DEVICE, value, index, &buf, + size); + } else { + usbnet_write_cmd_async(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_DEVICE, value, index, data, + size); + } +} + +static int ax88179_read_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, + u16 index, u16 size, void *data) +{ + int ret; + + if (2 == size) { + u16 buf; + ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 1); + le16_to_cpus(&buf); + *((u16 *)data) = buf; + } else if (4 == size) { + u32 buf; + ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 1); + le32_to_cpus(&buf); + *((u32 *)data) = buf; + } else { + ret = __ax88179_read_cmd(dev, cmd, value, index, size, data, 1); + } + + return ret; +} + +static int ax88179_write_cmd_nopm(struct usbnet *dev, u8 cmd, u16 value, + u16 index, u16 size, void *data) +{ + int ret; + + if (2 == size) { + u16 buf; + buf = *((u16 *)data); + cpu_to_le16s(&buf); + ret = __ax88179_write_cmd(dev, cmd, value, index, + size, &buf, 1); + } else { + ret = __ax88179_write_cmd(dev, cmd, value, index, + size, data, 1); + } + + return ret; +} + +static int ax88179_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data) +{ + int ret; + + if (2 == size) { + u16 buf; + ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0); + le16_to_cpus(&buf); + *((u16 *)data) = buf; + } else if (4 == size) { + u32 buf; + ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0); + le32_to_cpus(&buf); + *((u32 *)data) = buf; + } else { + ret = __ax88179_read_cmd(dev, cmd, value, index, size, data, 0); + } + + return ret; +} + +static int ax88179_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index, + u16 size, void *data) +{ + int ret; + + if (2 == size) { + u16 buf; + buf = *((u16 *)data); + cpu_to_le16s(&buf); + ret = __ax88179_write_cmd(dev, cmd, value, index, + size, &buf, 0); + } else { + ret = __ax88179_write_cmd(dev, cmd, value, index, + size, data, 0); + } + + return ret; +} + +static void ax88179_status(struct usbnet *dev, struct urb *urb) +{ + struct ax88179_int_data *event; + u32 link; + + if (urb->actual_length < 8) + return; + + event = urb->transfer_buffer; + le32_to_cpus((void *)&event->intdata1); + + link = (((__force u32)event->intdata1) & AX_INT_PPLS_LINK) >> 16; + + if (netif_carrier_ok(dev->net) != link) { + if (link) + usbnet_defer_kevent(dev, EVENT_LINK_RESET); + else + netif_carrier_off(dev->net); + + netdev_info(dev->net, "ax88179 - Link status is: %d\n", link); + } +} + +static int ax88179_mdio_read(struct net_device *netdev, int phy_id, int loc) +{ + struct usbnet *dev = netdev_priv(netdev); + u16 res; + + ax88179_read_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res); + return res; +} + +static void ax88179_mdio_write(struct net_device *netdev, int phy_id, int loc, + int val) +{ + struct usbnet *dev = netdev_priv(netdev); + u16 res = (u16) val; + + ax88179_write_cmd(dev, AX_ACCESS_PHY, phy_id, (__u16)loc, 2, &res); +} + +static int ax88179_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct usbnet *dev = usb_get_intfdata(intf); + u16 tmp16; + u8 tmp8; + + usbnet_suspend(intf, message); + + /* Disable RX path */ + ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + tmp16 &= ~AX_MEDIUM_RECEIVE_EN; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + + /* Force bulk-in zero length */ + ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, + 2, 2, &tmp16); + + tmp16 |= AX_PHYPWR_RSTCTL_BZ | AX_PHYPWR_RSTCTL_IPRL; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, + 2, 2, &tmp16); + + /* change clock */ + tmp8 = 0; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8); + + /* Configure RX control register => stop operation */ + tmp16 = AX_RX_CTL_STOP; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16); + + return 0; +} + +/* This function is used to enable the autodetach function. */ +/* This function is determined by offset 0x43 of EEPROM */ +static int ax88179_auto_detach(struct usbnet *dev, int in_pm) +{ + u16 tmp16; + u8 tmp8; + int (*fnr)(struct usbnet *, u8, u16, u16, u16, void *); + int (*fnw)(struct usbnet *, u8, u16, u16, u16, void *); + + if (!in_pm) { + fnr = ax88179_read_cmd; + fnw = ax88179_write_cmd; + } else { + fnr = ax88179_read_cmd_nopm; + fnw = ax88179_write_cmd_nopm; + } + + if (fnr(dev, AX_ACCESS_EEPROM, 0x43, 1, 2, &tmp16) < 0) + return 0; + + if ((tmp16 == 0xFFFF) || (!(tmp16 & 0x0100))) + return 0; + + /* Enable Auto Detach bit */ + tmp8 = 0; + fnr(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8); + tmp8 |= AX_CLK_SELECT_ULR; + fnw(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8); + + fnr(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16); + tmp16 |= AX_PHYPWR_RSTCTL_AT; + fnw(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16); + + return 0; +} + +static int ax88179_resume(struct usb_interface *intf) +{ + struct usbnet *dev = usb_get_intfdata(intf); + u16 tmp16; + u8 tmp8; + + netif_carrier_off(dev->net); + + /* Power up ethernet PHY */ + tmp16 = 0; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, + 2, 2, &tmp16); + udelay(1000); + + tmp16 = AX_PHYPWR_RSTCTL_IPRL; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, + 2, 2, &tmp16); + msleep(200); + + /* Ethernet PHY Auto Detach*/ + ax88179_auto_detach(dev, 1); + + /* Enable clock */ + ax88179_read_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8); + tmp8 |= AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8); + msleep(100); + + /* Configure RX control register => start operation */ + tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START | + AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB; + ax88179_write_cmd_nopm(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16); + + return usbnet_resume(intf); +} + +static void +ax88179_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + u8 opt; + + if (ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, + 1, 1, &opt) < 0) { + wolinfo->supported = 0; + wolinfo->wolopts = 0; + return; + } + + wolinfo->supported = WAKE_PHY | WAKE_MAGIC; + wolinfo->wolopts = 0; + if (opt & AX_MONITOR_MODE_RWLC) + wolinfo->wolopts |= WAKE_PHY; + if (opt & AX_MONITOR_MODE_RWMP) + wolinfo->wolopts |= WAKE_MAGIC; +} + +static int +ax88179_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo) +{ + struct usbnet *dev = netdev_priv(net); + u8 opt = 0; + + if (wolinfo->wolopts & WAKE_PHY) + opt |= AX_MONITOR_MODE_RWLC; + if (wolinfo->wolopts & WAKE_MAGIC) + opt |= AX_MONITOR_MODE_RWMP; + + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, + 1, 1, &opt) < 0) + return -EINVAL; + + return 0; +} + +static int ax88179_get_eeprom_len(struct net_device *net) +{ + return AX_EEPROM_LEN; +} + +static int +ax88179_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom, + u8 *data) +{ + struct usbnet *dev = netdev_priv(net); + u16 *eeprom_buff; + int first_word, last_word; + int i, ret; + + if (eeprom->len == 0) + return -EINVAL; + + eeprom->magic = AX88179_EEPROM_MAGIC; + + first_word = eeprom->offset >> 1; + last_word = (eeprom->offset + eeprom->len - 1) >> 1; + eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1), + GFP_KERNEL); + if (!eeprom_buff) + return -ENOMEM; + + /* ax88179/178A returns 2 bytes from eeprom on read */ + for (i = first_word; i <= last_word; i++) { + ret = __ax88179_read_cmd(dev, AX_ACCESS_EEPROM, i, 1, 2, + &eeprom_buff[i - first_word], + 0); + if (ret < 0) { + kfree(eeprom_buff); + return -EIO; + } + } + + memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len); + kfree(eeprom_buff); + return 0; +} + +static int ax88179_get_settings(struct net_device *net, struct ethtool_cmd *cmd) +{ + struct usbnet *dev = netdev_priv(net); + return mii_ethtool_gset(&dev->mii, cmd); +} + +static int ax88179_set_settings(struct net_device *net, struct ethtool_cmd *cmd) +{ + struct usbnet *dev = netdev_priv(net); + return mii_ethtool_sset(&dev->mii, cmd); +} + + +static int ax88179_ioctl(struct net_device *net, struct ifreq *rq, int cmd) +{ + struct usbnet *dev = netdev_priv(net); + return generic_mii_ioctl(&dev->mii, if_mii(rq), cmd, NULL); +} + +static const struct ethtool_ops ax88179_ethtool_ops = { + .get_link = ethtool_op_get_link, + .get_msglevel = usbnet_get_msglevel, + .set_msglevel = usbnet_set_msglevel, + .get_wol = ax88179_get_wol, + .set_wol = ax88179_set_wol, + .get_eeprom_len = ax88179_get_eeprom_len, + .get_eeprom = ax88179_get_eeprom, + .get_settings = ax88179_get_settings, + .set_settings = ax88179_set_settings, + .nway_reset = usbnet_nway_reset, +}; + +static void ax88179_set_multicast(struct net_device *net) +{ + struct usbnet *dev = netdev_priv(net); + struct ax88179_data *data = (struct ax88179_data *)dev->data; + u8 *m_filter = ((u8 *)dev->data) + 12; + + data->rxctl = (AX_RX_CTL_START | AX_RX_CTL_AB | AX_RX_CTL_IPE); + + if (net->flags & IFF_PROMISC) { + data->rxctl |= AX_RX_CTL_PRO; + } else if (net->flags & IFF_ALLMULTI || + netdev_mc_count(net) > AX_MAX_MCAST) { + data->rxctl |= AX_RX_CTL_AMALL; + } else if (netdev_mc_empty(net)) { + /* just broadcast and directed */ + } else { + /* We use the 20 byte dev->data for our 8 byte filter buffer + * to avoid allocating memory that is tricky to free later + */ + u32 crc_bits; + struct netdev_hw_addr *ha; + + memset(m_filter, 0, AX_MCAST_FLTSIZE); + + netdev_for_each_mc_addr(ha, net) { + crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26; + *(m_filter + (crc_bits >> 3)) |= (1 << (crc_bits & 7)); + } + + ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_MULFLTARY, + AX_MCAST_FLTSIZE, AX_MCAST_FLTSIZE, + m_filter); + + data->rxctl |= AX_RX_CTL_AM; + } + + ax88179_write_cmd_async(dev, AX_ACCESS_MAC, AX_RX_CTL, + 2, 2, &data->rxctl); +} + +static int +ax88179_set_features(struct net_device *net, netdev_features_t features) +{ + u8 tmp; + struct usbnet *dev = netdev_priv(net); + netdev_features_t changed = net->features ^ features; + + if (changed & NETIF_F_IP_CSUM) { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp); + tmp ^= AX_TXCOE_TCP | AX_TXCOE_UDP; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp); + } + + if (changed & NETIF_F_IPV6_CSUM) { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp); + tmp ^= AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, &tmp); + } + + if (changed & NETIF_F_RXCSUM) { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp); + tmp ^= AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP | + AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, &tmp); + } + + return 0; +} + +static int ax88179_change_mtu(struct net_device *net, int new_mtu) +{ + struct usbnet *dev = netdev_priv(net); + u16 tmp16; + + if (new_mtu <= 0 || new_mtu > 4088) + return -EINVAL; + + net->mtu = new_mtu; + dev->hard_mtu = net->mtu + net->hard_header_len; + + if (net->mtu > 1500) { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + tmp16 |= AX_MEDIUM_JUMBO_EN; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + } else { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + tmp16 &= ~AX_MEDIUM_JUMBO_EN; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + } + + return 0; +} + +static int ax88179_set_mac_addr(struct net_device *net, void *p) +{ + struct usbnet *dev = netdev_priv(net); + struct sockaddr *addr = p; + + if (netif_running(net)) + return -EBUSY; + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(net->dev_addr, addr->sa_data, ETH_ALEN); + + /* Set the MAC address */ + return ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, + ETH_ALEN, net->dev_addr); +} + +static const struct net_device_ops ax88179_netdev_ops = { + .ndo_open = usbnet_open, + .ndo_stop = usbnet_stop, + .ndo_start_xmit = usbnet_start_xmit, + .ndo_tx_timeout = usbnet_tx_timeout, + .ndo_change_mtu = ax88179_change_mtu, + .ndo_set_mac_address = ax88179_set_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_do_ioctl = ax88179_ioctl, + .ndo_set_rx_mode = ax88179_set_multicast, + .ndo_set_features = ax88179_set_features, +}; + +static int ax88179_check_eeprom(struct usbnet *dev) +{ + u8 i, buf, eeprom[20]; + u16 csum, delay = HZ / 10; + unsigned long jtimeout; + + /* Read EEPROM content */ + for (i = 0; i < 6; i++) { + buf = i; + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR, + 1, 1, &buf) < 0) + return -EINVAL; + + buf = EEP_RD; + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD, + 1, 1, &buf) < 0) + return -EINVAL; + + jtimeout = jiffies + delay; + do { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD, + 1, 1, &buf); + + if (time_after(jiffies, jtimeout)) + return -EINVAL; + + } while (buf & EEP_BUSY); + + __ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW, + 2, 2, &eeprom[i * 2], 0); + + if ((i == 0) && (eeprom[0] == 0xFF)) + return -EINVAL; + } + + csum = eeprom[6] + eeprom[7] + eeprom[8] + eeprom[9]; + csum = (csum >> 8) + (csum & 0xff); + if ((csum + eeprom[10]) != 0xff) + return -EINVAL; + + return 0; +} + +static int ax88179_check_efuse(struct usbnet *dev, u16 *ledmode) +{ + u8 i; + u8 efuse[64]; + u16 csum = 0; + + if (ax88179_read_cmd(dev, AX_ACCESS_EFUS, 0, 64, 64, efuse) < 0) + return -EINVAL; + + if (*efuse == 0xFF) + return -EINVAL; + + for (i = 0; i < 64; i++) + csum = csum + efuse[i]; + + while (csum > 255) + csum = (csum & 0x00FF) + ((csum >> 8) & 0x00FF); + + if (csum != 0xFF) + return -EINVAL; + + *ledmode = (efuse[51] << 8) | efuse[52]; + + return 0; +} + +static int ax88179_convert_old_led(struct usbnet *dev, u16 *ledvalue) +{ + u16 led; + + /* Loaded the old eFuse LED Mode */ + if (ax88179_read_cmd(dev, AX_ACCESS_EEPROM, 0x3C, 1, 2, &led) < 0) + return -EINVAL; + + led >>= 8; + switch (led) { + case 0xFF: + led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 | + LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 | + LED2_LINK_100 | LED2_LINK_1000 | LED_VALID; + break; + case 0xFE: + led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | LED_VALID; + break; + case 0xFD: + led = LED0_ACTIVE | LED1_LINK_1000 | LED2_LINK_100 | + LED2_LINK_10 | LED_VALID; + break; + case 0xFC: + led = LED0_ACTIVE | LED1_ACTIVE | LED1_LINK_1000 | LED2_ACTIVE | + LED2_LINK_100 | LED2_LINK_10 | LED_VALID; + break; + default: + led = LED0_ACTIVE | LED1_LINK_10 | LED1_LINK_100 | + LED1_LINK_1000 | LED2_ACTIVE | LED2_LINK_10 | + LED2_LINK_100 | LED2_LINK_1000 | LED_VALID; + break; + } + + *ledvalue = led; + + return 0; +} + +static int ax88179_led_setting(struct usbnet *dev) +{ + u8 ledfd, value = 0; + u16 tmp, ledact, ledlink, ledvalue = 0, delay = HZ / 10; + unsigned long jtimeout; + + /* Check AX88179 version. UA1 or UA2*/ + ax88179_read_cmd(dev, AX_ACCESS_MAC, GENERAL_STATUS, 1, 1, &value); + + if (!(value & AX_SECLD)) { /* UA1 */ + value = AX_GPIO_CTRL_GPIO3EN | AX_GPIO_CTRL_GPIO2EN | + AX_GPIO_CTRL_GPIO1EN; + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_GPIO_CTRL, + 1, 1, &value) < 0) + return -EINVAL; + } + + /* Check EEPROM */ + if (!ax88179_check_eeprom(dev)) { + value = 0x42; + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_ADDR, + 1, 1, &value) < 0) + return -EINVAL; + + value = EEP_RD; + if (ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD, + 1, 1, &value) < 0) + return -EINVAL; + + jtimeout = jiffies + delay; + do { + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_CMD, + 1, 1, &value); + + if (time_after(jiffies, jtimeout)) + return -EINVAL; + + } while (value & EEP_BUSY); + + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_HIGH, + 1, 1, &value); + ledvalue = (value << 8); + + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_SROM_DATA_LOW, + 1, 1, &value); + ledvalue |= value; + + /* load internal ROM for defaule setting */ + if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0)) + ax88179_convert_old_led(dev, &ledvalue); + + } else if (!ax88179_check_efuse(dev, &ledvalue)) { + if ((ledvalue == 0xFFFF) || ((ledvalue & LED_VALID) == 0)) + ax88179_convert_old_led(dev, &ledvalue); + } else { + ax88179_convert_old_led(dev, &ledvalue); + } + + tmp = GMII_PHY_PGSEL_EXT; + ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_PHY_PAGE_SELECT, 2, &tmp); + + tmp = 0x2c; + ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_PHYPAGE, 2, &tmp); + + ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_LED_ACT, 2, &ledact); + + ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_LED_LINK, 2, &ledlink); + + ledact &= GMII_LED_ACTIVE_MASK; + ledlink &= GMII_LED_LINK_MASK; + + if (ledvalue & LED0_ACTIVE) + ledact |= GMII_LED0_ACTIVE; + + if (ledvalue & LED1_ACTIVE) + ledact |= GMII_LED1_ACTIVE; + + if (ledvalue & LED2_ACTIVE) + ledact |= GMII_LED2_ACTIVE; + + if (ledvalue & LED0_LINK_10) + ledlink |= GMII_LED0_LINK_10; + + if (ledvalue & LED1_LINK_10) + ledlink |= GMII_LED1_LINK_10; + + if (ledvalue & LED2_LINK_10) + ledlink |= GMII_LED2_LINK_10; + + if (ledvalue & LED0_LINK_100) + ledlink |= GMII_LED0_LINK_100; + + if (ledvalue & LED1_LINK_100) + ledlink |= GMII_LED1_LINK_100; + + if (ledvalue & LED2_LINK_100) + ledlink |= GMII_LED2_LINK_100; + + if (ledvalue & LED0_LINK_1000) + ledlink |= GMII_LED0_LINK_1000; + + if (ledvalue & LED1_LINK_1000) + ledlink |= GMII_LED1_LINK_1000; + + if (ledvalue & LED2_LINK_1000) + ledlink |= GMII_LED2_LINK_1000; + + tmp = ledact; + ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_LED_ACT, 2, &tmp); + + tmp = ledlink; + ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_LED_LINK, 2, &tmp); + + tmp = GMII_PHY_PGSEL_PAGE0; + ax88179_write_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_PHY_PAGE_SELECT, 2, &tmp); + + /* LED full duplex setting */ + ledfd = 0; + if (ledvalue & LED0_FD) + ledfd |= 0x01; + else if ((ledvalue & LED0_USB3_MASK) == 0) + ledfd |= 0x02; + + if (ledvalue & LED1_FD) + ledfd |= 0x04; + else if ((ledvalue & LED1_USB3_MASK) == 0) + ledfd |= 0x08; + + if (ledvalue & LED2_FD) + ledfd |= 0x10; + else if ((ledvalue & LED2_USB3_MASK) == 0) + ledfd |= 0x20; + + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_LEDCTRL, 1, 1, &ledfd); + + return 0; +} + +static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf) +{ + u8 buf[5]; + u16 *tmp16; + u8 *tmp; + struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data; + + usbnet_get_endpoints(dev, intf); + + tmp16 = (u16 *)buf; + tmp = (u8 *)buf; + + memset(ax179_data, 0, sizeof(*ax179_data)); + + /* Power up ethernet PHY */ + *tmp16 = 0; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16); + *tmp16 = AX_PHYPWR_RSTCTL_IPRL; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16); + msleep(200); + + *tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp); + msleep(100); + + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, + ETH_ALEN, dev->net->dev_addr); + memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN); + + /* RX bulk configuration */ + memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5); + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp); + + dev->rx_urb_size = 1024 * 20; + + *tmp = 0x34; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp); + + *tmp = 0x52; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH, + 1, 1, tmp); + + dev->net->netdev_ops = &ax88179_netdev_ops; + dev->net->ethtool_ops = &ax88179_ethtool_ops; + dev->net->needed_headroom = 8; + + /* Initialize MII structure */ + dev->mii.dev = dev->net; + dev->mii.mdio_read = ax88179_mdio_read; + dev->mii.mdio_write = ax88179_mdio_write; + dev->mii.phy_id_mask = 0xff; + dev->mii.reg_num_mask = 0xff; + dev->mii.phy_id = 0x03; + dev->mii.supports_gmii = 1; + + dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO; + + dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO; + + /* Enable checksum offload */ + *tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP | + AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp); + + *tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP | + AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp); + + /* Configure RX control register => start operation */ + *tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START | + AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16); + + *tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL | + AX_MONITOR_MODE_RWMP; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp); + + /* Configure default medium type => giga */ + *tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN | + AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_ALWAYS_ONE | + AX_MEDIUM_FULL_DUPLEX | AX_MEDIUM_GIGAMODE; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, tmp16); + + ax88179_led_setting(dev); + + /* Restart autoneg */ + mii_nway_restart(&dev->mii); + + netif_carrier_off(dev->net); + + return 0; +} + +static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf) +{ + u16 tmp16; + + /* Configure RX control register => stop operation */ + tmp16 = AX_RX_CTL_STOP; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16); + + tmp16 = 0; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp16); + + /* Power down ethernet PHY */ + tmp16 = 0; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, &tmp16); +} + +static void +ax88179_rx_checksum(struct sk_buff *skb, u32 *pkt_hdr) +{ + skb->ip_summed = CHECKSUM_NONE; + + /* checksum error bit is set */ + if ((*pkt_hdr & AX_RXHDR_L3CSUM_ERR) || + (*pkt_hdr & AX_RXHDR_L4CSUM_ERR)) + return; + + /* It must be a TCP or UDP packet with a valid checksum */ + if (((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_TCP) || + ((*pkt_hdr & AX_RXHDR_L4_TYPE_MASK) == AX_RXHDR_L4_TYPE_UDP)) + skb->ip_summed = CHECKSUM_UNNECESSARY; +} + +static int ax88179_rx_fixup(struct usbnet *dev, struct sk_buff *skb) +{ + struct sk_buff *ax_skb; + int pkt_cnt; + u32 rx_hdr; + u16 hdr_off; + u32 *pkt_hdr; + + skb_trim(skb, skb->len - 4); + memcpy(&rx_hdr, skb_tail_pointer(skb), 4); + le32_to_cpus(&rx_hdr); + + pkt_cnt = (u16)rx_hdr; + hdr_off = (u16)(rx_hdr >> 16); + pkt_hdr = (u32 *)(skb->data + hdr_off); + + while (pkt_cnt--) { + u16 pkt_len; + + le32_to_cpus(pkt_hdr); + pkt_len = (*pkt_hdr >> 16) & 0x1fff; + + /* Check CRC or runt packet */ + if ((*pkt_hdr & AX_RXHDR_CRC_ERR) || + (*pkt_hdr & AX_RXHDR_DROP_ERR)) { + skb_pull(skb, (pkt_len + 7) & 0xFFF8); + pkt_hdr++; + continue; + } + + if (pkt_cnt == 0) { + /* Skip IP alignment psudo header */ + skb_pull(skb, 2); + skb->len = pkt_len; + skb_set_tail_pointer(skb, pkt_len); + skb->truesize = pkt_len + sizeof(struct sk_buff); + ax88179_rx_checksum(skb, pkt_hdr); + return 1; + } + + ax_skb = skb_clone(skb, GFP_ATOMIC); + if (ax_skb) { + ax_skb->len = pkt_len; + ax_skb->data = skb->data + 2; + skb_set_tail_pointer(ax_skb, pkt_len); + ax_skb->truesize = pkt_len + sizeof(struct sk_buff); + ax88179_rx_checksum(ax_skb, pkt_hdr); + usbnet_skb_return(dev, ax_skb); + } else { + return 0; + } + + skb_pull(skb, (pkt_len + 7) & 0xFFF8); + pkt_hdr++; + } + return 1; +} + +static struct sk_buff * +ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) +{ + u32 tx_hdr1, tx_hdr2; + int frame_size = dev->maxpacket; + int mss = skb_shinfo(skb)->gso_size; + int headroom; + int tailroom; + + tx_hdr1 = skb->len; + tx_hdr2 = mss; + if (((skb->len + 8) % frame_size) == 0) + tx_hdr2 |= 0x80008000; /* Enable padding */ + + skb_linearize(skb); + headroom = skb_headroom(skb); + tailroom = skb_tailroom(skb); + + if (!skb_header_cloned(skb) && + !skb_cloned(skb) && + (headroom + tailroom) >= 8) { + if (headroom < 8) { + skb->data = memmove(skb->head + 8, skb->data, skb->len); + skb_set_tail_pointer(skb, skb->len); + } + } else { + struct sk_buff *skb2; + + skb2 = skb_copy_expand(skb, 8, 0, flags); + dev_kfree_skb_any(skb); + skb = skb2; + if (!skb) + return NULL; + } + + skb_push(skb, 4); + cpu_to_le32s(&tx_hdr2); + skb_copy_to_linear_data(skb, &tx_hdr2, 4); + + skb_push(skb, 4); + cpu_to_le32s(&tx_hdr1); + skb_copy_to_linear_data(skb, &tx_hdr1, 4); + + return skb; +} + +static int ax88179_link_reset(struct usbnet *dev) +{ + struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data; + u8 tmp[5], link_sts; + u16 mode, tmp16, delay = HZ / 10; + u32 tmp32 = 0x40000000; + unsigned long jtimeout; + + jtimeout = jiffies + delay; + while (tmp32 & 0x40000000) { + mode = 0; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode); + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, + &ax179_data->rxctl); + + /*link up, check the usb device control TX FIFO full or empty*/ + ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32); + + if (time_after(jiffies, jtimeout)) + return 0; + } + + mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN | + AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_ALWAYS_ONE; + + ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS, + 1, 1, &link_sts); + + ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID, + GMII_PHY_PHYSR, 2, &tmp16); + + if (!(tmp16 & GMII_PHY_PHYSR_LINK)) { + return 0; + } else if (GMII_PHY_PHYSR_GIGA == (tmp16 & GMII_PHY_PHYSR_SMASK)) { + mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ; + if (dev->net->mtu > 1500) + mode |= AX_MEDIUM_JUMBO_EN; + + if (link_sts & AX_USB_SS) + memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5); + else if (link_sts & AX_USB_HS) + memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5); + else + memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5); + } else if (GMII_PHY_PHYSR_100 == (tmp16 & GMII_PHY_PHYSR_SMASK)) { + mode |= AX_MEDIUM_PS; + + if (link_sts & (AX_USB_SS | AX_USB_HS)) + memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5); + else + memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5); + } else { + memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5); + } + + /* RX bulk configuration */ + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp); + + dev->rx_urb_size = (1024 * (tmp[3] + 2)); + + if (tmp16 & GMII_PHY_PHYSR_FULL) + mode |= AX_MEDIUM_FULL_DUPLEX; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &mode); + + netif_carrier_on(dev->net); + + return 0; +} + +static int ax88179_reset(struct usbnet *dev) +{ + u8 buf[5]; + u16 *tmp16; + u8 *tmp; + + tmp16 = (u16 *)buf; + tmp = (u8 *)buf; + + /* Power up ethernet PHY */ + *tmp16 = 0; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16); + + *tmp16 = AX_PHYPWR_RSTCTL_IPRL; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL, 2, 2, tmp16); + msleep(200); + + *tmp = AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp); + msleep(100); + + /* Ethernet PHY Auto Detach*/ + ax88179_auto_detach(dev, 0); + + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN, ETH_ALEN, + dev->net->dev_addr); + memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN); + + /* RX bulk configuration */ + memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5); + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp); + + dev->rx_urb_size = 1024 * 20; + + *tmp = 0x34; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_LOW, 1, 1, tmp); + + *tmp = 0x52; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH, + 1, 1, tmp); + + dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO; + + dev->net->hw_features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | + NETIF_F_RXCSUM | NETIF_F_SG | NETIF_F_TSO; + + /* Enable checksum offload */ + *tmp = AX_RXCOE_IP | AX_RXCOE_TCP | AX_RXCOE_UDP | + AX_RXCOE_TCPV6 | AX_RXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RXCOE_CTL, 1, 1, tmp); + + *tmp = AX_TXCOE_IP | AX_TXCOE_TCP | AX_TXCOE_UDP | + AX_TXCOE_TCPV6 | AX_TXCOE_UDPV6; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_TXCOE_CTL, 1, 1, tmp); + + /* Configure RX control register => start operation */ + *tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START | + AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, tmp16); + + *tmp = AX_MONITOR_MODE_PMETYPE | AX_MONITOR_MODE_PMEPOL | + AX_MONITOR_MODE_RWMP; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MONITOR_MOD, 1, 1, tmp); + + /* Configure default medium type => giga */ + *tmp16 = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN | + AX_MEDIUM_RXFLOW_CTRLEN | AX_MEDIUM_ALWAYS_ONE | + AX_MEDIUM_FULL_DUPLEX | AX_MEDIUM_GIGAMODE; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, tmp16); + + ax88179_led_setting(dev); + + /* Restart autoneg */ + mii_nway_restart(&dev->mii); + + netif_carrier_off(dev->net); + + return 0; +} + +static int ax88179_stop(struct usbnet *dev) +{ + u16 tmp16; + + ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + tmp16 &= ~AX_MEDIUM_RECEIVE_EN; + ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE, + 2, 2, &tmp16); + + return 0; +} + +static const struct driver_info ax88179_info = { + .description = "ASIX AX88179 USB 3.0 Gigibit Ethernet", + .bind = ax88179_bind, + .unbind = ax88179_unbind, + .status = ax88179_status, + .link_reset = ax88179_link_reset, + .reset = ax88179_reset, + .stop = ax88179_stop, + .flags = FLAG_ETHER | FLAG_FRAMING_AX, + .rx_fixup = ax88179_rx_fixup, + .tx_fixup = ax88179_tx_fixup, +}; + +static const struct driver_info ax88178a_info = { + .description = "ASIX AX88178A USB 2.0 Gigibit Ethernet", + .bind = ax88179_bind, + .unbind = ax88179_unbind, + .status = ax88179_status, + .link_reset = ax88179_link_reset, + .reset = ax88179_reset, + .stop = ax88179_stop, + .flags = FLAG_ETHER | FLAG_FRAMING_AX, + .rx_fixup = ax88179_rx_fixup, + .tx_fixup = ax88179_tx_fixup, +}; + +static const struct driver_info sitecom_info = { + .description = "Sitecom USB 3.0 to Gigabit Adapter", + .bind = ax88179_bind, + .unbind = ax88179_unbind, + .status = ax88179_status, + .link_reset = ax88179_link_reset, + .reset = ax88179_reset, + .stop = ax88179_stop, + .flags = FLAG_ETHER | FLAG_FRAMING_AX, + .rx_fixup = ax88179_rx_fixup, + .tx_fixup = ax88179_tx_fixup, +}; + +static const struct usb_device_id products[] = { +{ + /* ASIX AX88179 10/100/1000 */ + USB_DEVICE(0x0b95, 0x1790), + .driver_info = (unsigned long)&ax88179_info, +}, { + /* ASIX AX88178A 10/100/1000 */ + USB_DEVICE(0x0b95, 0x178a), + .driver_info = (unsigned long)&ax88178a_info, +}, { + /* Sitecom USB 3.0 to Gigabit Adapter */ + USB_DEVICE(0x0df6, 0x0072), + .driver_info = (unsigned long) &sitecom_info, +}, + { }, +}; +MODULE_DEVICE_TABLE(usb, products); + +static struct usb_driver ax88179_178a_driver = { + .name = "ax88179_178a", + .id_table = products, + .probe = usbnet_probe, + .suspend = ax88179_suspend, + .resume = ax88179_resume, + .disconnect = usbnet_disconnect, + .supports_autosuspend = 1, + .disable_hub_initiated_lpm = 1, +}; + +module_usb_driver(ax88179_178a_driver); + +MODULE_DESCRIPTION("ASIX AX88179/178A based USB 3.0/2.0 Gigabit Ethernet Devices"); +MODULE_LICENSE("GPL"); -- cgit v1.1 From d6e89c0b7660bd725a0948126f9db1a327f48d76 Mon Sep 17 00:00:00 2001 From: Silviu-Mihai Popescu Date: Sat, 2 Mar 2013 09:45:19 +0000 Subject: caif_dev: fix sparse warnings for caif_flow_cb This fixed the following sparse warning: net/caif/caif_dev.c:121:6: warning: symbol 'caif_flow_cb' was not declared. Should it be static? Signed-off-by: Silviu-Mihai Popescu Signed-off-by: David S. Miller --- net/caif/caif_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c index 1ae1d9c..21760f0 100644 --- a/net/caif/caif_dev.c +++ b/net/caif/caif_dev.c @@ -118,7 +118,7 @@ static struct caif_device_entry *caif_get(struct net_device *dev) return NULL; } -void caif_flow_cb(struct sk_buff *skb) +static void caif_flow_cb(struct sk_buff *skb) { struct caif_device_entry *caifd; void (*dtor)(struct sk_buff *skb) = NULL; -- cgit v1.1 From 15516f123a849084c6bb8dec40f2acb2ce69d639 Mon Sep 17 00:00:00 2001 From: Cesar Eduardo Barros Date: Sat, 2 Mar 2013 15:53:39 +0000 Subject: MAINTAINERS: remove 3c505 This driver was removed by commit 0e245db (drivers/net: delete the 3Com 3c505/3c507 intel i825xx support). Cc: Paul Gortmaker Cc: Philip Blundell Cc: netdev@vger.kernel.org Signed-off-by: Cesar Eduardo Barros Signed-off-by: David S. Miller --- MAINTAINERS | 6 ------ 1 file changed, 6 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 1e5c3a4..86db49e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -113,12 +113,6 @@ Maintainers List (try to look for most precise areas first) ----------------------------------- -3C505 NETWORK DRIVER -M: Philip Blundell -L: netdev@vger.kernel.org -S: Maintained -F: drivers/net/ethernet/i825xx/3c505* - 3C59X NETWORK DRIVER M: Steffen Klassert L: netdev@vger.kernel.org -- cgit v1.1 From 6b8a12bab337702c804deba9a1860ac042f69002 Mon Sep 17 00:00:00 2001 From: Cesar Eduardo Barros Date: Sat, 2 Mar 2013 15:53:43 +0000 Subject: MAINTAINERS: remove drivers/net/wan/cycx* This driver was removed by commit 6fcdf4f (wanrouter: delete now orphaned header content, files/drivers). Cc: Paul Gortmaker Cc: Arnaldo Carvalho de Melo Cc: netdev@vger.kernel.org Signed-off-by: Cesar Eduardo Barros Signed-off-by: David S. Miller --- MAINTAINERS | 6 ------ 1 file changed, 6 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 86db49e..7ca15c5 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2353,12 +2353,6 @@ W: http://www.arm.linux.org.uk/ S: Maintained F: drivers/video/cyber2000fb.* -CYCLADES 2X SYNC CARD DRIVER -M: Arnaldo Carvalho de Melo -W: http://oops.ghostprotocols.net:81/blog -S: Maintained -F: drivers/net/wan/cycx* - CYCLADES ASYNC MUX DRIVER W: http://www.cyclades.com/ S: Orphan -- cgit v1.1 From b711c12113620081708c6ccd43768b5a2501e2ab Mon Sep 17 00:00:00 2001 From: Cesar Eduardo Barros Date: Sat, 2 Mar 2013 15:53:45 +0000 Subject: MAINTAINERS: remove eexpress This driver was removed by commit f84932d (drivers/net: delete ISA intel eexpress and eepro i825xx drivers). Cc: Paul Gortmaker Cc: Philip Blundell Cc: netdev@vger.kernel.org Signed-off-by: Cesar Eduardo Barros Signed-off-by: David S. Miller --- MAINTAINERS | 6 ------ 1 file changed, 6 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 7ca15c5..f79abf0 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3046,12 +3046,6 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/kristoffer/linux-hpc.git F: drivers/video/s1d13xxxfb.c F: include/video/s1d13xxxfb.h -ETHEREXPRESS-16 NETWORK DRIVER -M: Philip Blundell -L: netdev@vger.kernel.org -S: Maintained -F: drivers/net/ethernet/i825xx/eexpress.* - ETHERNET BRIDGE M: Stephen Hemminger L: bridge@lists.linux-foundation.org -- cgit v1.1 From 51cd02d43c0bc7f55c84f50de23c08554db56ce1 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 3 Mar 2013 16:20:50 +0800 Subject: ASoC: wm8350: Use jiffies rather than msecs in schedule_delayed_work() The delay parameter of schedule_delayed_work() is number of jiffies to wait rather than miliseconds. Before commit 6d3c26bcb "ASoC: Use delayed work to debounce WM8350 jack IRQs", the debounce time is 200 miliseconds in wm8350_hp_jack_handler(). So I think this is a bug when convert to use delayed work. Signed-off-by: Axel Lin Signed-off-by: Mark Brown --- sound/soc/codecs/wm8350.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c index fb92fb4..1db957d 100644 --- a/sound/soc/codecs/wm8350.c +++ b/sound/soc/codecs/wm8350.c @@ -1303,7 +1303,7 @@ static irqreturn_t wm8350_hpl_jack_handler(int irq, void *data) if (device_may_wakeup(wm8350->dev)) pm_wakeup_event(wm8350->dev, 250); - schedule_delayed_work(&priv->hpl.work, 200); + schedule_delayed_work(&priv->hpl.work, msecs_to_jiffies(200)); return IRQ_HANDLED; } @@ -1320,7 +1320,7 @@ static irqreturn_t wm8350_hpr_jack_handler(int irq, void *data) if (device_may_wakeup(wm8350->dev)) pm_wakeup_event(wm8350->dev, 250); - schedule_delayed_work(&priv->hpr.work, 200); + schedule_delayed_work(&priv->hpr.work, msecs_to_jiffies(200)); return IRQ_HANDLED; } -- cgit v1.1 From f3e227df8235fc0bf8ba08304aa135066ec9b9b0 Mon Sep 17 00:00:00 2001 From: Syam Sidhardhan Date: Mon, 25 Feb 2013 04:05:38 +0530 Subject: drm/i915: Fix missing variable initilization Need to initialize the variable wait to false. Signed-off-by: Syam Sidhardhan Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ddi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 816c45c..24debd6 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1391,8 +1391,8 @@ void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder) struct intel_dp *intel_dp = &intel_dig_port->dp; struct drm_i915_private *dev_priv = encoder->dev->dev_private; enum port port = intel_dig_port->port; - bool wait; uint32_t val; + bool wait = false; if (I915_READ(DP_TP_CTL(port)) & DP_TP_CTL_ENABLE) { val = I915_READ(DDI_BUF_CTL(port)); -- cgit v1.1 From b18ac466956c7e7b5abf7a2d6adf8c626267d0ae Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Mon, 18 Feb 2013 19:00:24 -0300 Subject: drm/i915: wait_event_timeout's timeout is in jiffies So use msecs_to_jiffies(10) to make the timeout the same as in the "!has_aux_irq" case. This patch was initially written by Daniel Vetter and posted on pastebin a few weeks ago. I'm just bringing it to the mailing list. Signed-off-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 7b8bfe8..50cd7ac 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -353,7 +353,8 @@ intel_dp_aux_wait_done(struct intel_dp *intel_dp, bool has_aux_irq) #define C (((status = I915_READ_NOTRACE(ch_ctl)) & DP_AUX_CH_CTL_SEND_BUSY) == 0) if (has_aux_irq) - done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, 10); + done = wait_event_timeout(dev_priv->gmbus_wait_queue, C, + msecs_to_jiffies(10)); else done = wait_for_atomic(C, 10) == 0; if (!done) -- cgit v1.1 From 4a35f83b2b7c6aae3fc0d1c4554fdc99dc33ad07 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Fri, 22 Feb 2013 16:53:38 +0200 Subject: drm/i915: Don't clobber crtc->fb when queue_flip fails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Restore crtc->fb to the old framebuffer if queue_flip fails. While at it, kill the pointless intel_fb temp variable. v2: Update crtc->fb before queue_flip and restore it back after a failure. Cc: stable@vger.kernel.org Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson Reported-and-Tested-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0ff10b3..09659ff 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7264,8 +7264,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, { struct drm_device *dev = crtc->dev; struct drm_i915_private *dev_priv = dev->dev_private; - struct intel_framebuffer *intel_fb; - struct drm_i915_gem_object *obj; + struct drm_framebuffer *old_fb = crtc->fb; + struct drm_i915_gem_object *obj = to_intel_framebuffer(fb)->obj; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); struct intel_unpin_work *work; unsigned long flags; @@ -7290,8 +7290,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, work->event = event; work->crtc = crtc; - intel_fb = to_intel_framebuffer(crtc->fb); - work->old_fb_obj = intel_fb->obj; + work->old_fb_obj = to_intel_framebuffer(old_fb)->obj; INIT_WORK(&work->work, intel_unpin_work_fn); ret = drm_vblank_get(dev, intel_crtc->pipe); @@ -7311,9 +7310,6 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, intel_crtc->unpin_work = work; spin_unlock_irqrestore(&dev->event_lock, flags); - intel_fb = to_intel_framebuffer(fb); - obj = intel_fb->obj; - if (atomic_read(&intel_crtc->unpin_work_count) >= 2) flush_workqueue(dev_priv->wq); @@ -7348,6 +7344,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc, cleanup_pending: atomic_dec(&intel_crtc->unpin_work_count); + crtc->fb = old_fb; drm_gem_object_unreference(&work->old_fb_obj->base); drm_gem_object_unreference(&obj->base); mutex_unlock(&dev->struct_mutex); -- cgit v1.1 From 86c268ed0f9b3b4d51d81dd8fcec533a164414d1 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Fri, 1 Mar 2013 17:00:50 -0800 Subject: drm/i915: Fix Haswell/CRW PCI IDs. The second digit was off by one, which meant we accidentally treated GT(n) as GT(n-1). This also meant no support for GT1 at all. Cc: stable@kernel.org Signed-off-by: Kenneth Graunke Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index c5b8c81..2c5ee96 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -379,15 +379,15 @@ static const struct pci_device_id pciidlist[] = { /* aka */ INTEL_VGA_DEVICE(0x0A06, &intel_haswell_m_info), /* ULT GT1 mobile */ INTEL_VGA_DEVICE(0x0A16, &intel_haswell_m_info), /* ULT GT2 mobile */ INTEL_VGA_DEVICE(0x0A26, &intel_haswell_m_info), /* ULT GT2 mobile */ - INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT1 desktop */ + INTEL_VGA_DEVICE(0x0D02, &intel_haswell_d_info), /* CRW GT1 desktop */ + INTEL_VGA_DEVICE(0x0D12, &intel_haswell_d_info), /* CRW GT2 desktop */ INTEL_VGA_DEVICE(0x0D22, &intel_haswell_d_info), /* CRW GT2 desktop */ - INTEL_VGA_DEVICE(0x0D32, &intel_haswell_d_info), /* CRW GT2 desktop */ - INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT1 server */ + INTEL_VGA_DEVICE(0x0D0A, &intel_haswell_d_info), /* CRW GT1 server */ + INTEL_VGA_DEVICE(0x0D1A, &intel_haswell_d_info), /* CRW GT2 server */ INTEL_VGA_DEVICE(0x0D2A, &intel_haswell_d_info), /* CRW GT2 server */ - INTEL_VGA_DEVICE(0x0D3A, &intel_haswell_d_info), /* CRW GT2 server */ - INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT1 mobile */ + INTEL_VGA_DEVICE(0x0D06, &intel_haswell_m_info), /* CRW GT1 mobile */ + INTEL_VGA_DEVICE(0x0D16, &intel_haswell_m_info), /* CRW GT2 mobile */ INTEL_VGA_DEVICE(0x0D26, &intel_haswell_m_info), /* CRW GT2 mobile */ - INTEL_VGA_DEVICE(0x0D36, &intel_haswell_m_info), /* CRW GT2 mobile */ INTEL_VGA_DEVICE(0x0f30, &intel_valleyview_m_info), INTEL_VGA_DEVICE(0x0157, &intel_valleyview_m_info), INTEL_VGA_DEVICE(0x0155, &intel_valleyview_d_info), -- cgit v1.1 From 30a1b5ef0c953a7ba82169c46f92f52fa11ee15e Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 8 Feb 2013 23:02:33 +0100 Subject: ARM: 7642/1: netx: bump IRQ offset to 64 The Netx IRQs offset from zero, which is illegal, since Linux IRQ 0 is NO_IRQ. Acked-by: Sascha Hauer Reviewed-by: Jamie Iles Signed-off-by: Linus Walleij Signed-off-by: Russell King --- arch/arm/mach-netx/generic.c | 2 +- arch/arm/mach-netx/include/mach/irqs.h | 64 +++++++++++++++++----------------- 2 files changed, 33 insertions(+), 33 deletions(-) diff --git a/arch/arm/mach-netx/generic.c b/arch/arm/mach-netx/generic.c index 27c2cb7..1504b68 100644 --- a/arch/arm/mach-netx/generic.c +++ b/arch/arm/mach-netx/generic.c @@ -168,7 +168,7 @@ void __init netx_init_irq(void) { int irq; - vic_init(io_p2v(NETX_PA_VIC), 0, ~0, 0); + vic_init(io_p2v(NETX_PA_VIC), NETX_IRQ_VIC_START, ~0, 0); for (irq = NETX_IRQ_HIF_CHAINED(0); irq <= NETX_IRQ_HIF_LAST; irq++) { irq_set_chip_and_handler(irq, &netx_hif_chip, diff --git a/arch/arm/mach-netx/include/mach/irqs.h b/arch/arm/mach-netx/include/mach/irqs.h index 6ce914d..8f74a84 100644 --- a/arch/arm/mach-netx/include/mach/irqs.h +++ b/arch/arm/mach-netx/include/mach/irqs.h @@ -17,42 +17,42 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#define NETX_IRQ_VIC_START 0 -#define NETX_IRQ_SOFTINT 0 -#define NETX_IRQ_TIMER0 1 -#define NETX_IRQ_TIMER1 2 -#define NETX_IRQ_TIMER2 3 -#define NETX_IRQ_SYSTIME_NS 4 -#define NETX_IRQ_SYSTIME_S 5 -#define NETX_IRQ_GPIO_15 6 -#define NETX_IRQ_WATCHDOG 7 -#define NETX_IRQ_UART0 8 -#define NETX_IRQ_UART1 9 -#define NETX_IRQ_UART2 10 -#define NETX_IRQ_USB 11 -#define NETX_IRQ_SPI 12 -#define NETX_IRQ_I2C 13 -#define NETX_IRQ_LCD 14 -#define NETX_IRQ_HIF 15 -#define NETX_IRQ_GPIO_0_14 16 -#define NETX_IRQ_XPEC0 17 -#define NETX_IRQ_XPEC1 18 -#define NETX_IRQ_XPEC2 19 -#define NETX_IRQ_XPEC3 20 -#define NETX_IRQ_XPEC(no) (17 + (no)) -#define NETX_IRQ_MSYNC0 21 -#define NETX_IRQ_MSYNC1 22 -#define NETX_IRQ_MSYNC2 23 -#define NETX_IRQ_MSYNC3 24 -#define NETX_IRQ_IRQ_PHY 25 -#define NETX_IRQ_ISO_AREA 26 +#define NETX_IRQ_VIC_START 64 +#define NETX_IRQ_SOFTINT (NETX_IRQ_VIC_START + 0) +#define NETX_IRQ_TIMER0 (NETX_IRQ_VIC_START + 1) +#define NETX_IRQ_TIMER1 (NETX_IRQ_VIC_START + 2) +#define NETX_IRQ_TIMER2 (NETX_IRQ_VIC_START + 3) +#define NETX_IRQ_SYSTIME_NS (NETX_IRQ_VIC_START + 4) +#define NETX_IRQ_SYSTIME_S (NETX_IRQ_VIC_START + 5) +#define NETX_IRQ_GPIO_15 (NETX_IRQ_VIC_START + 6) +#define NETX_IRQ_WATCHDOG (NETX_IRQ_VIC_START + 7) +#define NETX_IRQ_UART0 (NETX_IRQ_VIC_START + 8) +#define NETX_IRQ_UART1 (NETX_IRQ_VIC_START + 9) +#define NETX_IRQ_UART2 (NETX_IRQ_VIC_START + 10) +#define NETX_IRQ_USB (NETX_IRQ_VIC_START + 11) +#define NETX_IRQ_SPI (NETX_IRQ_VIC_START + 12) +#define NETX_IRQ_I2C (NETX_IRQ_VIC_START + 13) +#define NETX_IRQ_LCD (NETX_IRQ_VIC_START + 14) +#define NETX_IRQ_HIF (NETX_IRQ_VIC_START + 15) +#define NETX_IRQ_GPIO_0_14 (NETX_IRQ_VIC_START + 16) +#define NETX_IRQ_XPEC0 (NETX_IRQ_VIC_START + 17) +#define NETX_IRQ_XPEC1 (NETX_IRQ_VIC_START + 18) +#define NETX_IRQ_XPEC2 (NETX_IRQ_VIC_START + 19) +#define NETX_IRQ_XPEC3 (NETX_IRQ_VIC_START + 20) +#define NETX_IRQ_XPEC(no) (NETX_IRQ_VIC_START + 17 + (no)) +#define NETX_IRQ_MSYNC0 (NETX_IRQ_VIC_START + 21) +#define NETX_IRQ_MSYNC1 (NETX_IRQ_VIC_START + 22) +#define NETX_IRQ_MSYNC2 (NETX_IRQ_VIC_START + 23) +#define NETX_IRQ_MSYNC3 (NETX_IRQ_VIC_START + 24) +#define NETX_IRQ_IRQ_PHY (NETX_IRQ_VIC_START + 25) +#define NETX_IRQ_ISO_AREA (NETX_IRQ_VIC_START + 26) /* int 27 is reserved */ /* int 28 is reserved */ -#define NETX_IRQ_TIMER3 29 -#define NETX_IRQ_TIMER4 30 +#define NETX_IRQ_TIMER3 (NETX_IRQ_VIC_START + 29) +#define NETX_IRQ_TIMER4 (NETX_IRQ_VIC_START + 30) /* int 31 is reserved */ -#define NETX_IRQS 32 +#define NETX_IRQS (NETX_IRQ_VIC_START + 32) /* for multiplexed irqs on gpio 0..14 */ #define NETX_IRQ_GPIO(x) (NETX_IRQS + (x)) -- cgit v1.1 From 78305c863074f809f09a96ea97b86d0f0c1c8399 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Fri, 15 Feb 2013 13:30:58 +0100 Subject: ARM: 7652/1: mm: fix missing use of 'asid' to get asid value from mm->context.id Fix missing use of the asid macro when getting the ASID from the mm->context.id field. Signed-off-by: Ben Dooks Signed-off-by: Russell King --- arch/arm/mm/proc-v7-3level.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/proc-v7-3level.S b/arch/arm/mm/proc-v7-3level.S index 50bf1da..6ffd78c 100644 --- a/arch/arm/mm/proc-v7-3level.S +++ b/arch/arm/mm/proc-v7-3level.S @@ -48,7 +48,7 @@ ENTRY(cpu_v7_switch_mm) #ifdef CONFIG_MMU mmid r1, r1 @ get mm->context.id - and r3, r1, #0xff + asid r3, r1 mov r3, r3, lsl #(48 - 32) @ ASID mcrr p15, 0, r0, r3, c2 @ set TTB 0 isb -- cgit v1.1 From 904464b91eca8c665acea033489225af02eeb75a Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Fri, 22 Feb 2013 14:01:42 +0100 Subject: ARM: 7655/1: smp_twd: make twd_local_timer_of_register() no-op for nosmp When booting a SMP build kernel with nosmp on kernel cmdline, the following fat warning will be hit. ------------[ cut here ]------------ WARNING: at arch/arm/kernel/smp_twd.c:345 twd_local_timer_of_register+0x7c/0x90() twd_local_timer_of_register failed (-6) Modules linked in: Backtrace: [<80011f14>] (dump_backtrace+0x0/0x10c) from [<8044dd30>] (dump_stack+0x18/0x1c) r7:805e9f58 r6:805ba84c r5:80539331 r4:00000159 [<8044dd18>] (dump_stack+0x0/0x1c) from [<80020fbc>] (warn_slowpath_common+0x54/0x6c) [<80020f68>] (warn_slowpath_common+0x0/0x6c) from [<80021078>] (warn_slowpath_fmt+0x38/0x40) r9:412fc09a r8:8fffffff r7:ffffffff r6:00000001 r5:80633b8c r4:80b32da8 [<80021040>] (warn_slowpath_fmt+0x0/0x40) from [<805ba84] (twd_local_timer_of_register+0x7c/0x90) r3:fffffffa r2:8053934b [<805ba7d0>] (twd_local_timer_of_register+0x0/0x90) from [<805c0bec>] (imx6q_timer_init+0x18/0x4c) r5:80633800 r4:8053b701 [<805c0bd4>] (imx6q_timer_init+0x0/0x4c) from [<805ba4e8>] (time_init+0x28/0x38) r5:80633800 r4:805dc0f4 [<805ba4c0>] (time_init+0x0/0x38) from [<805b6854>] (start_kernel+0x1a0/0x310) [<805b66b4>] (start_kernel+0x0/0x310) from [<10008044>] (0x10008044) r8:1000406a r7:805f3f8c r6:805dc0c4 r5:805f0518 r4:10c5387d ---[ end trace 1b75b31a2719ed1c ]--- Check (!is_smp() || !setup_max_cpus) in twd_local_timer_of_register() to make it be a no-op for the conditions, thus avoid above warning. Reported-by: Dirk Behme Signed-off-by: Shawn Guo Signed-off-by: Russell King --- arch/arm/kernel/smp_twd.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index c092115..3f25650 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -22,6 +22,7 @@ #include #include +#include #include #include @@ -373,6 +374,9 @@ void __init twd_local_timer_of_register(void) struct device_node *np; int err; + if (!is_smp() || !setup_max_cpus) + return; + np = of_find_matching_node(NULL, twd_of_match); if (!np) return; -- cgit v1.1 From d61947a164760ac520cb416768afdf38c33d60e7 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:46:16 +0100 Subject: ARM: 7657/1: head: fix swapper and idmap population with LPAE and big-endian The LPAE page table format uses 64-bit descriptors, so we need to take endianness into account when populating the swapper and idmap tables during early initialisation. This patch ensures that we store the two words making up each page table entry in the correct order when running big-endian. Cc: Acked-by: Catalin Marinas Tested-by: Marc Zyngier Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/head.S | 26 ++++++++++++++++++++++---- 1 file changed, 22 insertions(+), 4 deletions(-) diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S index 486a15a..e0eb9a1 100644 --- a/arch/arm/kernel/head.S +++ b/arch/arm/kernel/head.S @@ -184,13 +184,22 @@ __create_page_tables: orr r3, r3, #3 @ PGD block type mov r6, #4 @ PTRS_PER_PGD mov r7, #1 << (55 - 32) @ L_PGD_SWAPPER -1: str r3, [r0], #4 @ set bottom PGD entry bits +1: +#ifdef CONFIG_CPU_ENDIAN_BE8 str r7, [r0], #4 @ set top PGD entry bits + str r3, [r0], #4 @ set bottom PGD entry bits +#else + str r3, [r0], #4 @ set bottom PGD entry bits + str r7, [r0], #4 @ set top PGD entry bits +#endif add r3, r3, #0x1000 @ next PMD table subs r6, r6, #1 bne 1b add r4, r4, #0x1000 @ point to the PMD tables +#ifdef CONFIG_CPU_ENDIAN_BE8 + add r4, r4, #4 @ we only write the bottom word +#endif #endif ldr r7, [r10, #PROCINFO_MM_MMUFLAGS] @ mm_mmuflags @@ -258,6 +267,11 @@ __create_page_tables: addne r6, r6, #1 << SECTION_SHIFT strne r6, [r3] +#if defined(CONFIG_LPAE) && defined(CONFIG_CPU_ENDIAN_BE8) + sub r4, r4, #4 @ Fixup page table pointer + @ for 64-bit descriptors +#endif + #ifdef CONFIG_DEBUG_LL #if !defined(CONFIG_DEBUG_ICEDCC) && !defined(CONFIG_DEBUG_SEMIHOSTING) /* @@ -276,13 +290,17 @@ __create_page_tables: orr r3, r7, r3, lsl #SECTION_SHIFT #ifdef CONFIG_ARM_LPAE mov r7, #1 << (54 - 32) @ XN +#ifdef CONFIG_CPU_ENDIAN_BE8 + str r7, [r0], #4 + str r3, [r0], #4 #else - orr r3, r3, #PMD_SECT_XN -#endif str r3, [r0], #4 -#ifdef CONFIG_ARM_LPAE str r7, [r0], #4 #endif +#else + orr r3, r3, #PMD_SECT_XN + str r3, [r0], #4 +#endif #else /* CONFIG_DEBUG_ICEDCC || CONFIG_DEBUG_SEMIHOSTING */ /* we don't need any serial debugging mappings */ -- cgit v1.1 From 37f47e3d62533c931b04cb409f2eb299e6342331 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:47:20 +0100 Subject: ARM: 7658/1: mm: fix race updating mm->context.id on ASID rollover If a thread triggers an ASID rollover, other threads of the same process must be made to wait until the mm->context.id for the shared mm_struct has been updated to new generation and associated book-keeping (e.g. TLB invalidation) has ben performed. However, there is a *tiny* window where both mm->context.id and the relevant active_asids entry are updated to the new generation, but the TLB flush has not been performed, which could allow another thread to return to userspace with a dirty TLB, potentially leading to data corruption. In reality this will never occur because one CPU would need to perform a context-switch in the time it takes another to do a couple of atomic test/set operations but we should plug the race anyway. This patch moves the active_asids update until after the potential TLB flush on context-switch. Cc: # 3.8 Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/mm/context.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 7a05111..03ba181 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -207,11 +207,11 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) if ((mm->context.id ^ atomic64_read(&asid_generation)) >> ASID_BITS) new_context(mm, cpu); - atomic64_set(&per_cpu(active_asids, cpu), mm->context.id); - cpumask_set_cpu(cpu, mm_cpumask(mm)); - if (cpumask_test_and_clear_cpu(cpu, &tlb_flush_pending)) local_flush_tlb_all(); + + atomic64_set(&per_cpu(active_asids, cpu), mm->context.id); + cpumask_set_cpu(cpu, mm_cpumask(mm)); raw_spin_unlock_irqrestore(&cpu_asid_lock, flags); switch_mm_fastpath: -- cgit v1.1 From 8a4e3a9ead7e37ce1505602b564c15da09ac039f Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:47:36 +0100 Subject: ARM: 7659/1: mm: make mm->context.id an atomic64_t variable mm->context.id is updated under asid_lock when a new ASID is allocated to an mm_struct. However, it is also read without the lock when a task is being scheduled and checking whether or not the current ASID generation is up-to-date. If two threads of the same process are being scheduled in parallel and the bottom bits of the generation in their mm->context.id match the current generation (that is, the mm_struct has not been used for ~2^24 rollovers) then the non-atomic, lockless access to mm->context.id may yield the incorrect ASID. This patch fixes this issue by making mm->context.id and atomic64_t, ensuring that the generation is always read consistently. For code that only requires access to the ASID bits (e.g. TLB flushing by mm), then the value is accessed directly, which GCC converts to an ldrb. Cc: # 3.8 Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/mmu.h | 8 ++++---- arch/arm/include/asm/mmu_context.h | 2 +- arch/arm/kernel/asm-offsets.c | 2 +- arch/arm/mm/context.c | 21 +++++++++++++-------- 4 files changed, 19 insertions(+), 14 deletions(-) diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 9f77e78..e3d5554 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -5,15 +5,15 @@ typedef struct { #ifdef CONFIG_CPU_HAS_ASID - u64 id; + atomic64_t id; #endif - unsigned int vmalloc_seq; + unsigned int vmalloc_seq; } mm_context_t; #ifdef CONFIG_CPU_HAS_ASID #define ASID_BITS 8 #define ASID_MASK ((~0ULL) << ASID_BITS) -#define ASID(mm) ((mm)->context.id & ~ASID_MASK) +#define ASID(mm) ((mm)->context.id.counter & ~ASID_MASK) #else #define ASID(mm) (0) #endif @@ -26,7 +26,7 @@ typedef struct { * modified for 2.6 by Hyok S. Choi */ typedef struct { - unsigned long end_brk; + unsigned long end_brk; } mm_context_t; #endif diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h index e1f644b..863a661 100644 --- a/arch/arm/include/asm/mmu_context.h +++ b/arch/arm/include/asm/mmu_context.h @@ -25,7 +25,7 @@ void __check_vmalloc_seq(struct mm_struct *mm); #ifdef CONFIG_CPU_HAS_ASID void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk); -#define init_new_context(tsk,mm) ({ mm->context.id = 0; }) +#define init_new_context(tsk,mm) ({ atomic64_set(&mm->context.id, 0); 0; }) #else /* !CONFIG_CPU_HAS_ASID */ diff --git a/arch/arm/kernel/asm-offsets.c b/arch/arm/kernel/asm-offsets.c index 5ce738b..923eec7 100644 --- a/arch/arm/kernel/asm-offsets.c +++ b/arch/arm/kernel/asm-offsets.c @@ -110,7 +110,7 @@ int main(void) BLANK(); #endif #ifdef CONFIG_CPU_HAS_ASID - DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id)); + DEFINE(MM_CONTEXT_ID, offsetof(struct mm_struct, context.id.counter)); BLANK(); #endif DEFINE(VMA_VM_MM, offsetof(struct vm_area_struct, vm_mm)); diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 03ba181..44d4ee5 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -152,9 +152,9 @@ static int is_reserved_asid(u64 asid) return 0; } -static void new_context(struct mm_struct *mm, unsigned int cpu) +static u64 new_context(struct mm_struct *mm, unsigned int cpu) { - u64 asid = mm->context.id; + u64 asid = atomic64_read(&mm->context.id); u64 generation = atomic64_read(&asid_generation); if (asid != 0 && is_reserved_asid(asid)) { @@ -181,13 +181,14 @@ static void new_context(struct mm_struct *mm, unsigned int cpu) cpumask_clear(mm_cpumask(mm)); } - mm->context.id = asid; + return asid; } void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) { unsigned long flags; unsigned int cpu = smp_processor_id(); + u64 asid; if (unlikely(mm->context.vmalloc_seq != init_mm.context.vmalloc_seq)) __check_vmalloc_seq(mm); @@ -198,19 +199,23 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) */ cpu_set_reserved_ttbr0(); - if (!((mm->context.id ^ atomic64_read(&asid_generation)) >> ASID_BITS) - && atomic64_xchg(&per_cpu(active_asids, cpu), mm->context.id)) + asid = atomic64_read(&mm->context.id); + if (!((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS) + && atomic64_xchg(&per_cpu(active_asids, cpu), asid)) goto switch_mm_fastpath; raw_spin_lock_irqsave(&cpu_asid_lock, flags); /* Check that our ASID belongs to the current generation. */ - if ((mm->context.id ^ atomic64_read(&asid_generation)) >> ASID_BITS) - new_context(mm, cpu); + asid = atomic64_read(&mm->context.id); + if ((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS) { + asid = new_context(mm, cpu); + atomic64_set(&mm->context.id, asid); + } if (cpumask_test_and_clear_cpu(cpu, &tlb_flush_pending)) local_flush_tlb_all(); - atomic64_set(&per_cpu(active_asids, cpu), mm->context.id); + atomic64_set(&per_cpu(active_asids, cpu), asid); cpumask_set_cpu(cpu, mm_cpumask(mm)); raw_spin_unlock_irqrestore(&cpu_asid_lock, flags); -- cgit v1.1 From 862c588f062fe9339a180cf6429e4df1855c376a Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:48:11 +0100 Subject: ARM: 7660/1: tlb: add branch predictor maintenance operations The ARM architecture requires explicit branch predictor maintenance when updating an instruction stream for a given virtual address. In reality, this isn't so much of a burden because the branch predictor is flushed during the cache maintenance required to make the new instructions visible to the I-side of the processor. However, there are still some cases where explicit flushing is required, so add a local_bp_flush_all operation to deal with this. Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/tlbflush.h | 34 ++++++++++++++++++++++++++++------ arch/arm/kernel/smp_tlb.c | 12 ++++++++++++ 2 files changed, 40 insertions(+), 6 deletions(-) diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index 6e924d3..4db8c88 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -34,10 +34,13 @@ #define TLB_V6_D_ASID (1 << 17) #define TLB_V6_I_ASID (1 << 18) +#define TLB_V6_BP (1 << 19) + /* Unified Inner Shareable TLB operations (ARMv7 MP extensions) */ -#define TLB_V7_UIS_PAGE (1 << 19) -#define TLB_V7_UIS_FULL (1 << 20) -#define TLB_V7_UIS_ASID (1 << 21) +#define TLB_V7_UIS_PAGE (1 << 20) +#define TLB_V7_UIS_FULL (1 << 21) +#define TLB_V7_UIS_ASID (1 << 22) +#define TLB_V7_UIS_BP (1 << 23) #define TLB_BARRIER (1 << 28) #define TLB_L2CLEAN_FR (1 << 29) /* Feroceon */ @@ -150,7 +153,8 @@ #define v6wbi_tlb_flags (TLB_WB | TLB_DCLEAN | TLB_BARRIER | \ TLB_V6_I_FULL | TLB_V6_D_FULL | \ TLB_V6_I_PAGE | TLB_V6_D_PAGE | \ - TLB_V6_I_ASID | TLB_V6_D_ASID) + TLB_V6_I_ASID | TLB_V6_D_ASID | \ + TLB_V6_BP) #ifdef CONFIG_CPU_TLB_V6 # define v6wbi_possible_flags v6wbi_tlb_flags @@ -166,9 +170,11 @@ #endif #define v7wbi_tlb_flags_smp (TLB_WB | TLB_DCLEAN | TLB_BARRIER | \ - TLB_V7_UIS_FULL | TLB_V7_UIS_PAGE | TLB_V7_UIS_ASID) + TLB_V7_UIS_FULL | TLB_V7_UIS_PAGE | \ + TLB_V7_UIS_ASID | TLB_V7_UIS_BP) #define v7wbi_tlb_flags_up (TLB_WB | TLB_DCLEAN | TLB_BARRIER | \ - TLB_V6_U_FULL | TLB_V6_U_PAGE | TLB_V6_U_ASID) + TLB_V6_U_FULL | TLB_V6_U_PAGE | \ + TLB_V6_U_ASID | TLB_V6_BP) #ifdef CONFIG_CPU_TLB_V7 @@ -430,6 +436,20 @@ static inline void local_flush_tlb_kernel_page(unsigned long kaddr) } } +static inline void local_flush_bp_all(void) +{ + const int zero = 0; + const unsigned int __tlb_flag = __cpu_tlb_flags; + + if (tlb_flag(TLB_V7_UIS_BP)) + asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero)); + else if (tlb_flag(TLB_V6_BP)) + asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero)); + + if (tlb_flag(TLB_BARRIER)) + isb(); +} + /* * flush_pmd_entry * @@ -480,6 +500,7 @@ static inline void clean_pmd_entry(void *pmd) #define flush_tlb_kernel_page local_flush_tlb_kernel_page #define flush_tlb_range local_flush_tlb_range #define flush_tlb_kernel_range local_flush_tlb_kernel_range +#define flush_bp_all local_flush_bp_all #else extern void flush_tlb_all(void); extern void flush_tlb_mm(struct mm_struct *mm); @@ -487,6 +508,7 @@ extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr); extern void flush_tlb_kernel_page(unsigned long kaddr); extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); extern void flush_tlb_kernel_range(unsigned long start, unsigned long end); +extern void flush_bp_all(void); #endif /* diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c index 02c5d2c..bd03005 100644 --- a/arch/arm/kernel/smp_tlb.c +++ b/arch/arm/kernel/smp_tlb.c @@ -64,6 +64,11 @@ static inline void ipi_flush_tlb_kernel_range(void *arg) local_flush_tlb_kernel_range(ta->ta_start, ta->ta_end); } +static inline void ipi_flush_bp_all(void *ignored) +{ + local_flush_bp_all(); +} + void flush_tlb_all(void) { if (tlb_ops_need_broadcast()) @@ -127,3 +132,10 @@ void flush_tlb_kernel_range(unsigned long start, unsigned long end) local_flush_tlb_kernel_range(start, end); } +void flush_bp_all(void) +{ + if (tlb_ops_need_broadcast()) + on_each_cpu(ipi_flush_bp_all, NULL, 1); + else + local_flush_bp_all(); +} -- cgit v1.1 From 89c7e4b8bbb3d4fa52df5746a8ad38e610143651 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:48:40 +0100 Subject: ARM: 7661/1: mm: perform explicit branch predictor maintenance when required The ARM ARM requires branch predictor maintenance if, for a given ASID, the instructions at a specific virtual address appear to change. From the kernel's point of view, that means: - Changing the kernel's view of memory (e.g. switching to the identity map) - ASID rollover (since ASIDs will be re-allocated to new tasks) This patch adds explicit branch predictor maintenance when either of the two conditions above are met. Reviewed-by: Catalin Marinas Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 1 + arch/arm/kernel/suspend.c | 1 + arch/arm/mm/context.c | 4 +++- arch/arm/mm/idmap.c | 1 + 4 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 1bdfd87..31644f1 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -285,6 +285,7 @@ asmlinkage void __cpuinit secondary_start_kernel(void) * switch away from it before attempting any exclusive accesses. */ cpu_switch_mm(mm->pgd, mm); + local_flush_bp_all(); enter_lazy_tlb(mm, current); local_flush_tlb_all(); diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index 358bca3..c59c97e 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c @@ -68,6 +68,7 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) ret = __cpu_suspend(arg, fn); if (ret == 0) { cpu_switch_mm(mm->pgd, mm); + local_flush_bp_all(); local_flush_tlb_all(); } diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 44d4ee5..a5a4b2bc 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -212,8 +212,10 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) atomic64_set(&mm->context.id, asid); } - if (cpumask_test_and_clear_cpu(cpu, &tlb_flush_pending)) + if (cpumask_test_and_clear_cpu(cpu, &tlb_flush_pending)) { + local_flush_bp_all(); local_flush_tlb_all(); + } atomic64_set(&per_cpu(active_asids, cpu), asid); cpumask_set_cpu(cpu, mm_cpumask(mm)); diff --git a/arch/arm/mm/idmap.c b/arch/arm/mm/idmap.c index 2dffc01..5ee505c 100644 --- a/arch/arm/mm/idmap.c +++ b/arch/arm/mm/idmap.c @@ -141,6 +141,7 @@ void setup_mm_for_reboot(void) { /* Switch to the identity mapping. */ cpu_switch_mm(idmap_pgd, &init_mm); + local_flush_bp_all(); #ifdef CONFIG_CPU_HAS_ASID /* -- cgit v1.1 From 1a8e611874da714ee7ef1e92e5160b38dc54959b Mon Sep 17 00:00:00 2001 From: Dietmar Eggemann Date: Thu, 28 Feb 2013 17:48:57 +0100 Subject: ARM: 7662/1: hw_breakpoint: reset debug logic on secondary CPUs in s2ram resume We must mask out the CPU_TASKS_FROZEN bit so that reset_ctrl_regs is also called on a secondary CPU during s2ram resume, where only the boot CPU will receive the PM_EXIT notification. Signed-off-by: Dietmar Eggemann Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/hw_breakpoint.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index 5eae53e..96093b7 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -1023,7 +1023,7 @@ out_mdbgen: static int __cpuinit dbg_reset_notify(struct notifier_block *self, unsigned long action, void *cpu) { - if (action == CPU_ONLINE) + if ((action & ~CPU_TASKS_FROZEN) == CPU_ONLINE) smp_call_function_single((int)cpu, reset_ctrl_regs, NULL, 1); return NOTIFY_OK; -- cgit v1.1 From f2fe09b055e2549de41fb107b34c60bac4a1b0cf Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 28 Feb 2013 17:49:11 +0100 Subject: ARM: 7663/1: perf: fix ARMv7 EVTYPE_MASK to include NSH bit Masked out PMXEVTYPER.NSH means that we can't enable profiling at PL2, regardless of the settings in the HDCR. This patch fixes the broken mask. Cc: Reported-by: Christoffer Dall Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/perf_event_v7.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index 8c79a9e..039cffb 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -774,7 +774,7 @@ static const unsigned armv7_a7_perf_cache_map[PERF_COUNT_HW_CACHE_MAX] /* * PMXEVTYPER: Event selection reg */ -#define ARMV7_EVTYPE_MASK 0xc00000ff /* Mask for writable bits */ +#define ARMV7_EVTYPE_MASK 0xc80000ff /* Mask for writable bits */ #define ARMV7_EVTYPE_EVENT 0xff /* Mask for EVENT bits */ /* -- cgit v1.1 From e595ede6050b1ce982d74f7084f93715bcc32359 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 28 Feb 2013 17:51:29 +0100 Subject: ARM: 7664/1: perf: remove erroneous semicolon from event initialisation Commit 9dcbf466559f ("ARM: perf: simplify __hw_perf_event_init err handling") tidied up the error handling code for perf event initialisation on ARM, but a copy-and-paste error left a dangling semicolon at the end of an if statement. This patch removes the broken semicolon, restoring the old group validation semantics. Cc: Mark Rutland Acked-by: Dirk Behme Signed-off-by: Chen Gang Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index 31e0eb3..a892067 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -400,7 +400,7 @@ __hw_perf_event_init(struct perf_event *event) } if (event->group_leader != event) { - if (validate_group(event) != 0); + if (validate_group(event) != 0) return -EINVAL; } -- cgit v1.1 From 3f7d1fe108dbaefd0c57a41753fc2c90b395f458 Mon Sep 17 00:00:00 2001 From: Cyrill Gorcunov Date: Thu, 28 Feb 2013 21:53:35 +0100 Subject: ARM: 7665/1: Wire up kcmp syscall Wire up kcmp syscall for ability to proceed checkpoint/restore procedure on ARM platform. Signed-off-by: Alexander Kartashov Signed-off-by: Cyrill Gorcunov Acked-by: Arnd Bergmann Signed-off-by: Russell King --- arch/arm/include/uapi/asm/unistd.h | 2 +- arch/arm/kernel/calls.S | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/include/uapi/asm/unistd.h b/arch/arm/include/uapi/asm/unistd.h index 4da7cde..af33b44 100644 --- a/arch/arm/include/uapi/asm/unistd.h +++ b/arch/arm/include/uapi/asm/unistd.h @@ -404,7 +404,7 @@ #define __NR_setns (__NR_SYSCALL_BASE+375) #define __NR_process_vm_readv (__NR_SYSCALL_BASE+376) #define __NR_process_vm_writev (__NR_SYSCALL_BASE+377) - /* 378 for kcmp */ +#define __NR_kcmp (__NR_SYSCALL_BASE+378) #define __NR_finit_module (__NR_SYSCALL_BASE+379) /* diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S index 0cc5761..c6ca7e3 100644 --- a/arch/arm/kernel/calls.S +++ b/arch/arm/kernel/calls.S @@ -387,7 +387,7 @@ /* 375 */ CALL(sys_setns) CALL(sys_process_vm_readv) CALL(sys_process_vm_writev) - CALL(sys_ni_syscall) /* reserved for sys_kcmp */ + CALL(sys_kcmp) CALL(sys_finit_module) #ifndef syscalls_counted .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls -- cgit v1.1 From 1a62fe8d1b26223abba31e9a81005d550822a1f8 Mon Sep 17 00:00:00 2001 From: Luis Alves Date: Thu, 14 Feb 2013 21:18:34 +0000 Subject: m68knommu: add CPU_NAME for 68000 This patch adds the correct CPU name. Without this, it just displays UNKNOWN at boot time and at '/proc/cpuinfo'. Signed-off-by: Luis Alves Signed-off-by: Greg Ungerer --- arch/m68k/kernel/setup_no.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c index 71fb299..911ba47 100644 --- a/arch/m68k/kernel/setup_no.c +++ b/arch/m68k/kernel/setup_no.c @@ -57,6 +57,9 @@ void (*mach_reset)(void); void (*mach_halt)(void); void (*mach_power_off)(void); +#ifdef CONFIG_M68000 +#define CPU_NAME "MC68000" +#endif #ifdef CONFIG_M68328 #define CPU_NAME "MC68328" #endif -- cgit v1.1 From be3f695cbe3ddd7f334a660b82ae866818ae4b10 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Sat, 16 Feb 2013 23:33:34 -0200 Subject: m68knommu: fix build when CPU is not coldfire Commit dd1cb3a7c43508c29e17836628090c0735bd3137 [merge MMU and non-MMU versions of mm/init.c] unified mm/init.c for both MMU and non-MMU m68k platforms. However, it broke when we build a non-MMU M68K Classic CPU kernel. This fix builds a section that came from the MMU version only when we are building a MMU kernel. Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: Greg Ungerer --- arch/m68k/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/m68k/mm/init.c b/arch/m68k/mm/init.c index afd8106f..519aad8 100644 --- a/arch/m68k/mm/init.c +++ b/arch/m68k/mm/init.c @@ -188,7 +188,7 @@ void __init mem_init(void) } } -#if !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE) +#if defined(CONFIG_MMU) && !defined(CONFIG_SUN3) && !defined(CONFIG_COLDFIRE) /* insert pointer tables allocated so far into the tablelist */ init_pointer_table((unsigned long)kernel_pg_dir); for (i = 0; i < PTRS_PER_PGD; i++) { -- cgit v1.1 From e97e9c98168b5357822ce4d8ed81fdb68aad3c30 Mon Sep 17 00:00:00 2001 From: Luis Alves Date: Wed, 27 Feb 2013 21:05:42 +0000 Subject: m68knommu: fix MC68328.h defines This patch fixes some broken #define's in the MC68328.h file. Most of them are whitespaces and one is an incorrect define of TCN. Signed-off-by: Luis Alves Signed-off-by: Greg Ungerer --- arch/m68k/include/asm/MC68328.h | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/m68k/include/asm/MC68328.h b/arch/m68k/include/asm/MC68328.h index a337e56..4ebf098 100644 --- a/arch/m68k/include/asm/MC68328.h +++ b/arch/m68k/include/asm/MC68328.h @@ -293,7 +293,7 @@ /* * Here go the bitmasks themselves */ -#define IMR_MSPIM (1 << SPIM _IRQ_NUM) /* Mask SPI Master interrupt */ +#define IMR_MSPIM (1 << SPIM_IRQ_NUM) /* Mask SPI Master interrupt */ #define IMR_MTMR2 (1 << TMR2_IRQ_NUM) /* Mask Timer 2 interrupt */ #define IMR_MUART (1 << UART_IRQ_NUM) /* Mask UART interrupt */ #define IMR_MWDT (1 << WDT_IRQ_NUM) /* Mask Watchdog Timer interrupt */ @@ -327,7 +327,7 @@ #define IWR_ADDR 0xfffff308 #define IWR LONG_REF(IWR_ADDR) -#define IWR_SPIM (1 << SPIM _IRQ_NUM) /* SPI Master interrupt */ +#define IWR_SPIM (1 << SPIM_IRQ_NUM) /* SPI Master interrupt */ #define IWR_TMR2 (1 << TMR2_IRQ_NUM) /* Timer 2 interrupt */ #define IWR_UART (1 << UART_IRQ_NUM) /* UART interrupt */ #define IWR_WDT (1 << WDT_IRQ_NUM) /* Watchdog Timer interrupt */ @@ -357,7 +357,7 @@ #define ISR_ADDR 0xfffff30c #define ISR LONG_REF(ISR_ADDR) -#define ISR_SPIM (1 << SPIM _IRQ_NUM) /* SPI Master interrupt */ +#define ISR_SPIM (1 << SPIM_IRQ_NUM) /* SPI Master interrupt */ #define ISR_TMR2 (1 << TMR2_IRQ_NUM) /* Timer 2 interrupt */ #define ISR_UART (1 << UART_IRQ_NUM) /* UART interrupt */ #define ISR_WDT (1 << WDT_IRQ_NUM) /* Watchdog Timer interrupt */ @@ -391,7 +391,7 @@ #define IPR_ADDR 0xfffff310 #define IPR LONG_REF(IPR_ADDR) -#define IPR_SPIM (1 << SPIM _IRQ_NUM) /* SPI Master interrupt */ +#define IPR_SPIM (1 << SPIM_IRQ_NUM) /* SPI Master interrupt */ #define IPR_TMR2 (1 << TMR2_IRQ_NUM) /* Timer 2 interrupt */ #define IPR_UART (1 << UART_IRQ_NUM) /* UART interrupt */ #define IPR_WDT (1 << WDT_IRQ_NUM) /* Watchdog Timer interrupt */ @@ -757,7 +757,7 @@ /* 'EZ328-compatible definitions */ #define TCN_ADDR TCN1_ADDR -#define TCN TCN +#define TCN TCN1 /* * Timer Unit 1 and 2 Status Registers -- cgit v1.1 From b4e6153704dda5bef78dd59324205b5e61829499 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 18 Feb 2013 23:11:30 -0500 Subject: ARM: mach-imx: move early resume code out of the .data section Building the kernel with allyesconfig fails because the i.mx early resume code located in the .data section is unable to fixup the bl relocation as the branch target gets too far away. The idea of having code in the .data section allows for easy access to nearby data using relative addressing while the MMU is off. However it is probably best to move the code back to the .text section where it belongs and fixup the data access instead. This solves the bl reloc issue (at least until this becomes a general problem) and simplifies the code as well. Signed-off-by: Nicolas Pitre Signed-off-by: Shawn Guo --- arch/arm/mach-imx/headsmp.S | 18 +++++++++--------- arch/arm/mach-imx/pm-imx6q.c | 15 --------------- 2 files changed, 9 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-imx/headsmp.S b/arch/arm/mach-imx/headsmp.S index 921fc15..a58c8b0 100644 --- a/arch/arm/mach-imx/headsmp.S +++ b/arch/arm/mach-imx/headsmp.S @@ -26,16 +26,16 @@ ENDPROC(v7_secondary_startup) #ifdef CONFIG_PM /* - * The following code is located into the .data section. This is to - * allow phys_l2x0_saved_regs to be accessed with a relative load - * as we are running on physical address here. + * The following code must assume it is running from physical address + * where absolute virtual addresses to the data section have to be + * turned into relative ones. */ - .data - .align #ifdef CONFIG_CACHE_L2X0 .macro pl310_resume - ldr r2, phys_l2x0_saved_regs + adr r0, l2x0_saved_regs_offset + ldr r2, [r0] + add r2, r2, r0 ldr r0, [r2, #L2X0_R_PHY_BASE] @ get physical base of l2x0 ldr r1, [r2, #L2X0_R_AUX_CTRL] @ get aux_ctrl value str r1, [r0, #L2X0_AUX_CTRL] @ restore aux_ctrl @@ -43,9 +43,9 @@ ENDPROC(v7_secondary_startup) str r1, [r0, #L2X0_CTRL] @ re-enable L2 .endm - .globl phys_l2x0_saved_regs -phys_l2x0_saved_regs: - .long 0 +l2x0_saved_regs_offset: + .word l2x0_saved_regs - . + #else .macro pl310_resume .endm diff --git a/arch/arm/mach-imx/pm-imx6q.c b/arch/arm/mach-imx/pm-imx6q.c index ee42d20..5faba7a 100644 --- a/arch/arm/mach-imx/pm-imx6q.c +++ b/arch/arm/mach-imx/pm-imx6q.c @@ -22,8 +22,6 @@ #include "common.h" #include "hardware.h" -extern unsigned long phys_l2x0_saved_regs; - static int imx6q_suspend_finish(unsigned long val) { cpu_do_idle(); @@ -57,18 +55,5 @@ static const struct platform_suspend_ops imx6q_pm_ops = { void __init imx6q_pm_init(void) { - /* - * The l2x0 core code provides an infrastucture to save and restore - * l2x0 registers across suspend/resume cycle. But because imx6q - * retains L2 content during suspend and needs to resume L2 before - * MMU is enabled, it can only utilize register saving support and - * have to take care of restoring on its own. So we save physical - * address of the data structure used by l2x0 core to save registers, - * and later restore the necessary ones in imx6q resume entry. - */ -#ifdef CONFIG_CACHE_L2X0 - phys_l2x0_saved_regs = __pa(&l2x0_saved_regs); -#endif - suspend_set_ops(&imx6q_pm_ops); } -- cgit v1.1 From 0545c798e9bb7fe29606681653c20d68e47f4840 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Tue, 19 Feb 2013 15:25:47 +0800 Subject: ARM: dts: imx53-mba53: fix fsl,pins for disp1-grp1 According to fsl,imx53-pinctrl.txt, the pin number of DISP1_DAT_21 should be 545, while 543 is IPU_CSI0_D_3. Along with the change, one duplication of DISP1_DAT_0 in disp1-grp1 is removed. Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx53-mba53.dts | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/imx53-mba53.dts b/arch/arm/boot/dts/imx53-mba53.dts index e54fffd..468c0a1 100644 --- a/arch/arm/boot/dts/imx53-mba53.dts +++ b/arch/arm/boot/dts/imx53-mba53.dts @@ -42,10 +42,9 @@ fsl,pins = <689 0x10000 /* DISP1_DRDY */ 482 0x10000 /* DISP1_HSYNC */ 489 0x10000 /* DISP1_VSYNC */ - 684 0x10000 /* DISP1_DAT_0 */ 515 0x10000 /* DISP1_DAT_22 */ 523 0x10000 /* DISP1_DAT_23 */ - 543 0x10000 /* DISP1_DAT_21 */ + 545 0x10000 /* DISP1_DAT_21 */ 553 0x10000 /* DISP1_DAT_20 */ 558 0x10000 /* DISP1_DAT_19 */ 564 0x10000 /* DISP1_DAT_18 */ -- cgit v1.1 From 65b5f42e2a9eb9c8383fb67698bf8c27657f8c14 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 20 Feb 2013 16:47:44 +1000 Subject: drm/nve0/graph: some random reg moved on kepler Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/engine/graph/nve0.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/engine/graph/nve0.c b/drivers/gpu/drm/nouveau/core/engine/graph/nve0.c index 61cec0f..4857f91 100644 --- a/drivers/gpu/drm/nouveau/core/engine/graph/nve0.c +++ b/drivers/gpu/drm/nouveau/core/engine/graph/nve0.c @@ -350,7 +350,7 @@ nve0_graph_init_gpc_0(struct nvc0_graph_priv *priv) nv_wr32(priv, GPC_UNIT(gpc, 0x0918), magicgpc918); } - nv_wr32(priv, GPC_BCAST(0x1bd4), magicgpc918); + nv_wr32(priv, GPC_BCAST(0x3fd4), magicgpc918); nv_wr32(priv, GPC_BCAST(0x08ac), nv_rd32(priv, 0x100800)); } -- cgit v1.1 From 650e1203c11354ba84d69ba445abc0efcfe3890a Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Tue, 26 Feb 2013 02:33:11 +0100 Subject: drm/nouveau: Disable AGP on PowerPC again. Signed-off-by: Francisco Jerez Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_agp.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nouveau_agp.c b/drivers/gpu/drm/nouveau/nouveau_agp.c index d28430c..6e7a55f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_agp.c +++ b/drivers/gpu/drm/nouveau/nouveau_agp.c @@ -47,6 +47,18 @@ nouveau_agp_enabled(struct nouveau_drm *drm) if (drm->agp.stat == UNKNOWN) { if (!nouveau_agpmode) return false; +#ifdef __powerpc__ + /* Disable AGP by default on all PowerPC machines for + * now -- At least some UniNorth-2 AGP bridges are + * known to be broken: DMA from the host to the card + * works just fine, but writeback from the card to the + * host goes straight to memory untranslated bypassing + * the GATT somehow, making them quite painful to deal + * with... + */ + if (nouveau_agpmode == -1) + return false; +#endif return true; } -- cgit v1.1 From f6853faa85793bf23b46787e4039824d275453c2 Mon Sep 17 00:00:00 2001 From: Francisco Jerez Date: Tue, 26 Feb 2013 02:33:12 +0100 Subject: drm/nouveau: Fix typo in init_idx_addr_latched(). Fixes script-based modesetting on some LVDS panels. Signed-off-by: Francisco Jerez Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/bios/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/init.c b/drivers/gpu/drm/nouveau/core/subdev/bios/init.c index 2cc1e6a..9c41b58 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bios/init.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/init.c @@ -869,7 +869,7 @@ init_idx_addr_latched(struct nvbios_init *init) init->offset += 2; init_wr32(init, dreg, idata); - init_mask(init, creg, ~mask, data | idata); + init_mask(init, creg, ~mask, data | iaddr); } } -- cgit v1.1 From 67f9718b084ea7100cefa39b02863fcb14102f8c Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 26 Feb 2013 12:02:54 +1000 Subject: drm/nv84: fix regression in page flipping Need to emit the semaphore ctxdma before trying to use the semaphore operations. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index a6237c9..e26caf6 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -512,11 +512,11 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, /* synchronise with the rendering channel, if necessary */ if (likely(chan)) { - ret = RING_SPACE(chan, 10); - if (ret) - return ret; - if (nv_mclass(chan->object) < NV84_CHANNEL_IND_CLASS) { + ret = RING_SPACE(chan, 8); + if (ret) + return ret; + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 2); OUT_RING (chan, NvEvoSema0 + nv_crtc->index); OUT_RING (chan, sync->sem.offset); @@ -525,13 +525,17 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, BEGIN_NV04(chan, 0, NV11_SUBCHAN_SEMAPHORE_OFFSET, 2); OUT_RING (chan, sync->sem.offset ^ 0x10); OUT_RING (chan, 0x74b1e000); - BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); - OUT_RING (chan, NvSema); } else if (nv_mclass(chan->object) < NVC0_CHANNEL_IND_CLASS) { u64 offset = nv84_fence_crtc(chan, nv_crtc->index); offset += sync->sem.offset; + ret = RING_SPACE(chan, 12); + if (ret) + return ret; + + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); + OUT_RING (chan, chan->vram); BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); OUT_RING (chan, upper_32_bits(offset)); OUT_RING (chan, lower_32_bits(offset)); @@ -546,6 +550,10 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, u64 offset = nv84_fence_crtc(chan, nv_crtc->index); offset += sync->sem.offset; + ret = RING_SPACE(chan, 10); + if (ret) + return ret; + BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); OUT_RING (chan, upper_32_bits(offset)); OUT_RING (chan, lower_32_bits(offset)); -- cgit v1.1 From 42bed34c364786b3757f9d788d8ed39120e8f1b5 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 27 Feb 2013 09:52:47 +1000 Subject: drm/nouveau/i2c: drop parent refcount when creating ports Fixes issue where i2c subdev never gets destroyed due to its subobjects holding references. This will mean the i2c subdev refcount goes negative during its destruction, but this isn't an issue in practice. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/i2c/base.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c index a114a0e..2e98e8a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/i2c/base.c @@ -142,6 +142,7 @@ nouveau_i2c_port_create_(struct nouveau_object *parent, /* drop port's i2c subdev refcount, i2c handles this itself */ if (ret == 0) { list_add_tail(&port->head, &i2c->ports); + atomic_dec(&parent->refcount); atomic_dec(&engine->refcount); } -- cgit v1.1 From 9f9bdaaf07dee47f73a160e6e4c64f67ee26c1d7 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Sat, 2 Mar 2013 13:21:31 +1000 Subject: drm/nv50-: prevent some races between modesetting and page flipping nexuiz-glx + gnome-shell is able to trigger this a lot of the time. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 189 ++++++++++++++++++--------------- 1 file changed, 106 insertions(+), 83 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index e26caf6..87a5a56 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -55,9 +55,9 @@ /* offsets in shared sync bo of various structures */ #define EVO_SYNC(c, o) ((c) * 0x0100 + (o)) -#define EVO_MAST_NTFY EVO_SYNC( 0, 0x00) -#define EVO_FLIP_SEM0(c) EVO_SYNC((c), 0x00) -#define EVO_FLIP_SEM1(c) EVO_SYNC((c), 0x10) +#define EVO_MAST_NTFY EVO_SYNC( 0, 0x00) +#define EVO_FLIP_SEM0(c) EVO_SYNC((c) + 1, 0x00) +#define EVO_FLIP_SEM1(c) EVO_SYNC((c) + 1, 0x10) #define EVO_CORE_HANDLE (0xd1500000) #define EVO_CHAN_HANDLE(t,i) (0xd15c0000 | (((t) & 0x00ff) << 8) | (i)) @@ -341,10 +341,8 @@ struct nv50_curs { struct nv50_sync { struct nv50_dmac base; - struct { - u32 offset; - u16 value; - } sem; + u32 addr; + u32 data; }; struct nv50_ovly { @@ -471,13 +469,33 @@ nv50_display_crtc_sema(struct drm_device *dev, int crtc) return nv50_disp(dev)->sync; } +struct nv50_display_flip { + struct nv50_disp *disp; + struct nv50_sync *chan; +}; + +static bool +nv50_display_flip_wait(void *data) +{ + struct nv50_display_flip *flip = data; + if (nouveau_bo_rd32(flip->disp->sync, flip->chan->addr / 4) == + flip->chan->data); + return true; + usleep_range(1, 2); + return false; +} + void nv50_display_flip_stop(struct drm_crtc *crtc) { - struct nv50_sync *sync = nv50_sync(crtc); + struct nouveau_device *device = nouveau_dev(crtc->dev); + struct nv50_display_flip flip = { + .disp = nv50_disp(crtc->dev), + .chan = nv50_sync(crtc), + }; u32 *push; - push = evo_wait(sync, 8); + push = evo_wait(flip.chan, 8); if (push) { evo_mthd(push, 0x0084, 1); evo_data(push, 0x00000000); @@ -487,8 +505,10 @@ nv50_display_flip_stop(struct drm_crtc *crtc) evo_data(push, 0x00000000); evo_mthd(push, 0x0080, 1); evo_data(push, 0x00000000); - evo_kick(push, sync); + evo_kick(push, flip.chan); } + + nv_wait_cb(device, nv50_display_flip_wait, &flip); } int @@ -496,11 +516,10 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, struct nouveau_channel *chan, u32 swap_interval) { struct nouveau_framebuffer *nv_fb = nouveau_framebuffer(fb); - struct nv50_disp *disp = nv50_disp(crtc->dev); struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); struct nv50_sync *sync = nv50_sync(crtc); + int head = nv_crtc->index, ret; u32 *push; - int ret; swap_interval <<= 4; if (swap_interval == 0) @@ -510,66 +529,64 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, if (unlikely(push == NULL)) return -EBUSY; - /* synchronise with the rendering channel, if necessary */ - if (likely(chan)) { - if (nv_mclass(chan->object) < NV84_CHANNEL_IND_CLASS) { - ret = RING_SPACE(chan, 8); - if (ret) - return ret; - - BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 2); - OUT_RING (chan, NvEvoSema0 + nv_crtc->index); - OUT_RING (chan, sync->sem.offset); - BEGIN_NV04(chan, 0, NV11_SUBCHAN_SEMAPHORE_RELEASE, 1); - OUT_RING (chan, 0xf00d0000 | sync->sem.value); - BEGIN_NV04(chan, 0, NV11_SUBCHAN_SEMAPHORE_OFFSET, 2); - OUT_RING (chan, sync->sem.offset ^ 0x10); - OUT_RING (chan, 0x74b1e000); - } else - if (nv_mclass(chan->object) < NVC0_CHANNEL_IND_CLASS) { - u64 offset = nv84_fence_crtc(chan, nv_crtc->index); - offset += sync->sem.offset; - - ret = RING_SPACE(chan, 12); - if (ret) - return ret; - - BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); - OUT_RING (chan, chan->vram); - BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); - OUT_RING (chan, upper_32_bits(offset)); - OUT_RING (chan, lower_32_bits(offset)); - OUT_RING (chan, 0xf00d0000 | sync->sem.value); - OUT_RING (chan, 0x00000002); - BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); - OUT_RING (chan, upper_32_bits(offset)); - OUT_RING (chan, lower_32_bits(offset ^ 0x10)); - OUT_RING (chan, 0x74b1e000); - OUT_RING (chan, 0x00000001); - } else { - u64 offset = nv84_fence_crtc(chan, nv_crtc->index); - offset += sync->sem.offset; - - ret = RING_SPACE(chan, 10); - if (ret) - return ret; - - BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); - OUT_RING (chan, upper_32_bits(offset)); - OUT_RING (chan, lower_32_bits(offset)); - OUT_RING (chan, 0xf00d0000 | sync->sem.value); - OUT_RING (chan, 0x00001002); - BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); - OUT_RING (chan, upper_32_bits(offset)); - OUT_RING (chan, lower_32_bits(offset ^ 0x10)); - OUT_RING (chan, 0x74b1e000); - OUT_RING (chan, 0x00001001); - } + if (chan && nv_mclass(chan->object) < NV84_CHANNEL_IND_CLASS) { + ret = RING_SPACE(chan, 8); + if (ret) + return ret; + + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 2); + OUT_RING (chan, NvEvoSema0 + head); + OUT_RING (chan, sync->addr ^ 0x10); + BEGIN_NV04(chan, 0, NV11_SUBCHAN_SEMAPHORE_RELEASE, 1); + OUT_RING (chan, sync->data + 1); + BEGIN_NV04(chan, 0, NV11_SUBCHAN_SEMAPHORE_OFFSET, 2); + OUT_RING (chan, sync->addr); + OUT_RING (chan, sync->data); + } else + if (chan && nv_mclass(chan->object) < NVC0_CHANNEL_IND_CLASS) { + u64 addr = nv84_fence_crtc(chan, head) + sync->addr; + ret = RING_SPACE(chan, 12); + if (ret) + return ret; + + BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 1); + OUT_RING (chan, chan->vram); + BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr ^ 0x10)); + OUT_RING (chan, lower_32_bits(addr ^ 0x10)); + OUT_RING (chan, sync->data + 1); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG); + BEGIN_NV04(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr)); + OUT_RING (chan, lower_32_bits(addr)); + OUT_RING (chan, sync->data); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL); + } else + if (chan) { + u64 addr = nv84_fence_crtc(chan, head) + sync->addr; + ret = RING_SPACE(chan, 10); + if (ret) + return ret; + + BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr ^ 0x10)); + OUT_RING (chan, lower_32_bits(addr ^ 0x10)); + OUT_RING (chan, sync->data + 1); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_WRITE_LONG | + NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD); + BEGIN_NVC0(chan, 0, NV84_SUBCHAN_SEMAPHORE_ADDRESS_HIGH, 4); + OUT_RING (chan, upper_32_bits(addr)); + OUT_RING (chan, lower_32_bits(addr)); + OUT_RING (chan, sync->data); + OUT_RING (chan, NV84_SUBCHAN_SEMAPHORE_TRIGGER_ACQUIRE_EQUAL | + NVC0_SUBCHAN_SEMAPHORE_TRIGGER_YIELD); + } + if (chan) { + sync->addr ^= 0x10; + sync->data++; FIRE_RING (chan); } else { - nouveau_bo_wr32(disp->sync, sync->sem.offset / 4, - 0xf00d0000 | sync->sem.value); evo_sync(crtc->dev); } @@ -583,9 +600,9 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, evo_data(push, 0x40000000); } evo_mthd(push, 0x0088, 4); - evo_data(push, sync->sem.offset); - evo_data(push, 0xf00d0000 | sync->sem.value); - evo_data(push, 0x74b1e000); + evo_data(push, sync->addr); + evo_data(push, sync->data++); + evo_data(push, sync->data); evo_data(push, NvEvoSync); evo_mthd(push, 0x00a0, 2); evo_data(push, 0x00000000); @@ -613,9 +630,6 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, evo_mthd(push, 0x0080, 1); evo_data(push, 0x00000000); evo_kick(push, sync); - - sync->sem.offset ^= 0x10; - sync->sem.value++; return 0; } @@ -1387,7 +1401,8 @@ nv50_crtc_create(struct drm_device *dev, struct nouveau_object *core, int index) if (ret) goto out; - head->sync.sem.offset = EVO_SYNC(1 + index, 0x00); + head->sync.addr = EVO_FLIP_SEM0(index); + head->sync.data = 0x00000000; /* allocate overlay resources */ ret = nv50_pioc_create(disp->core, NV50_DISP_OIMM_CLASS, index, @@ -2120,15 +2135,23 @@ nv50_display_fini(struct drm_device *dev) int nv50_display_init(struct drm_device *dev) { - u32 *push = evo_wait(nv50_mast(dev), 32); - if (push) { - evo_mthd(push, 0x0088, 1); - evo_data(push, NvEvoSync); - evo_kick(push, nv50_mast(dev)); - return 0; + struct nv50_disp *disp = nv50_disp(dev); + struct drm_crtc *crtc; + u32 *push; + + push = evo_wait(nv50_mast(dev), 32); + if (!push) + return -EBUSY; + + list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { + struct nv50_sync *sync = nv50_sync(crtc); + nouveau_bo_wr32(disp->sync, sync->addr / 4, sync->data); } - return -EBUSY; + evo_mthd(push, 0x0088, 1); + evo_data(push, NvEvoSync); + evo_kick(push, nv50_mast(dev)); + return 0; } void -- cgit v1.1 From f6c49da98dd6eacb85034d21d16e1428e03e190f Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 27 Feb 2013 14:03:58 -0300 Subject: ARM: mxs_defconfig: Make USB host functional again commit 09f6ffde2e (USB: EHCI: fix build error by making ChipIdea host a normal EHCI driver) introduced CONFIG_USB_EHCI_HCD as a dependency for USB_CHIPIDEA_HOST. Select CONFIG_USB_EHCI_HCD, so that USB host can be functional again. Cc: # 3.8 Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/configs/mxs_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/mxs_defconfig b/arch/arm/configs/mxs_defconfig index fbbc5bb..6a99e30 100644 --- a/arch/arm/configs/mxs_defconfig +++ b/arch/arm/configs/mxs_defconfig @@ -116,6 +116,7 @@ CONFIG_SND_SOC=y CONFIG_SND_MXS_SOC=y CONFIG_SND_SOC_MXS_SGTL5000=y CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y CONFIG_USB_CHIPIDEA=y CONFIG_USB_CHIPIDEA_HOST=y CONFIG_USB_STORAGE=y -- cgit v1.1 From bb39cdc52f4278614579c1041155a7b182f47e75 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 11 Feb 2013 12:01:46 -0200 Subject: ARM: mxs: mm: Fix sparse warning Include header to fix the following sparse warnings: arch/arm/mach-mxs/mm.c:43:13: warning: symbol 'mx23_map_io' was not declared. Should it be static? arch/arm/mach-mxs/mm.c:48:13: warning: symbol 'mx28_map_io' was not declared. Should it be static? Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/mm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mxs/mm.c b/arch/arm/mach-mxs/mm.c index a4294aa..e63b7d8 100644 --- a/arch/arm/mach-mxs/mm.c +++ b/arch/arm/mach-mxs/mm.c @@ -18,6 +18,7 @@ #include #include +#include /* * Define the MX23 memory map. -- cgit v1.1 From f26b016e7aeeebe793eb03e609baac80e1b02947 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 11 Feb 2013 12:01:47 -0200 Subject: ARM: mxs: icoll: Fix sparse warning Fix the following sparse warning: arch/arm/mach-mxs/icoll.c:103:13: warning: symbol 'icoll_of_init' was not declared. Should it be static? Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/icoll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-mxs/icoll.c b/arch/arm/mach-mxs/icoll.c index 8fb23af..e26eeba 100644 --- a/arch/arm/mach-mxs/icoll.c +++ b/arch/arm/mach-mxs/icoll.c @@ -100,7 +100,7 @@ static struct irq_domain_ops icoll_irq_domain_ops = { .xlate = irq_domain_xlate_onecell, }; -void __init icoll_of_init(struct device_node *np, +static void __init icoll_of_init(struct device_node *np, struct device_node *interrupt_parent) { /* -- cgit v1.1 From 95381f38c0ed85be732553bf56f613ce701d411b Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Mon, 11 Feb 2013 12:01:48 -0200 Subject: ARM: mxs: ocotp: Fix sparse warning Include header to fix the following sparse warning: arch/arm/mach-mxs/ocotp.c:33:11: warning: symbol 'mxs_get_ocotp' was not declared. Should it be static? Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/ocotp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mxs/ocotp.c b/arch/arm/mach-mxs/ocotp.c index 54add60..1dff467 100644 --- a/arch/arm/mach-mxs/ocotp.c +++ b/arch/arm/mach-mxs/ocotp.c @@ -19,6 +19,7 @@ #include /* for cpu_relax() */ #include +#include #define OCOTP_WORD_OFFSET 0x20 #define OCOTP_WORD_COUNT 0x20 -- cgit v1.1 From ba0e3427b03c3d1550239779eca5c1c5a53a2152 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 2 Mar 2013 19:14:03 -0800 Subject: userns: Stop oopsing in key_change_session_keyring Dave Jones writes: > Just hit this on Linus' current tree. > > [ 89.621770] BUG: unable to handle kernel NULL pointer dereference at 00000000000000c8 > [ 89.623111] IP: [] commit_creds+0x250/0x2f0 > [ 89.624062] PGD 122bfd067 PUD 122bfe067 PMD 0 > [ 89.624901] Oops: 0000 [#1] PREEMPT SMP > [ 89.625678] Modules linked in: caif_socket caif netrom bridge hidp 8021q garp stp mrp rose llc2 af_rxrpc phonet af_key binfmt_misc bnep l2tp_ppp can_bcm l2tp_core pppoe pppox can_raw scsi_transport_iscsi ppp_generic slhc nfnetlink can ipt_ULOG ax25 decnet irda nfc rds x25 crc_ccitt appletalk atm ipx p8023 psnap p8022 llc lockd sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_conntrack nf_conntrack ip6table_filter ip6_tables btusb bluetooth snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_pcm vhost_net snd_page_alloc snd_timer tun macvtap usb_debug snd rfkill microcode macvlan edac_core pcspkr serio_raw kvm_amd soundcore kvm r8169 mii > [ 89.637846] CPU 2 > [ 89.638175] Pid: 782, comm: trinity-main Not tainted 3.8.0+ #63 Gigabyte Technology Co., Ltd. GA-MA78GM-S2H/GA-MA78GM-S2H > [ 89.639850] RIP: 0010:[] [] commit_creds+0x250/0x2f0 > [ 89.641161] RSP: 0018:ffff880115657eb8 EFLAGS: 00010207 > [ 89.641984] RAX: 00000000000003e8 RBX: ffff88012688b000 RCX: 0000000000000000 > [ 89.643069] RDX: 0000000000000000 RSI: ffffffff81c32960 RDI: ffff880105839600 > [ 89.644167] RBP: ffff880115657ed8 R08: 0000000000000000 R09: 0000000000000000 > [ 89.645254] R10: 0000000000000001 R11: 0000000000000246 R12: ffff880105839600 > [ 89.646340] R13: ffff88011beea490 R14: ffff88011beea490 R15: 0000000000000000 > [ 89.647431] FS: 00007f3ac063b740(0000) GS:ffff88012b200000(0000) knlGS:0000000000000000 > [ 89.648660] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 89.649548] CR2: 00000000000000c8 CR3: 0000000122bfc000 CR4: 00000000000007e0 > [ 89.650635] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 89.651723] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > [ 89.652812] Process trinity-main (pid: 782, threadinfo ffff880115656000, task ffff88011beea490) > [ 89.654128] Stack: > [ 89.654433] 0000000000000000 ffff8801058396a0 ffff880105839600 ffff88011beeaa78 > [ 89.655769] ffff880115657ef8 ffffffff812c7d9b ffffffff82079be0 0000000000000000 > [ 89.657073] ffff880115657f28 ffffffff8106c665 0000000000000002 ffff880115657f58 > [ 89.658399] Call Trace: > [ 89.658822] [] key_change_session_keyring+0xfb/0x140 > [ 89.659845] [] task_work_run+0xa5/0xd0 > [ 89.660698] [] do_notify_resume+0x71/0xb0 > [ 89.661581] [] int_signal+0x12/0x17 > [ 89.662385] Code: 24 90 00 00 00 48 8b b3 90 00 00 00 49 8b 4c 24 40 48 39 f2 75 08 e9 83 00 00 00 48 89 ca 48 81 fa 60 29 c3 81 0f 84 41 fe ff ff <48> 8b 8a c8 00 00 00 48 39 ce 75 e4 3b 82 d0 00 00 00 0f 84 4b > [ 89.667778] RIP [] commit_creds+0x250/0x2f0 > [ 89.668733] RSP > [ 89.669301] CR2: 00000000000000c8 > > My fastest trinity induced oops yet! > > > Appears to be.. > > if ((set_ns == subset_ns->parent) && > 850: 48 8b 8a c8 00 00 00 mov 0xc8(%rdx),%rcx > > from the inlined cred_cap_issubset By historical accident we have been reading trying to set new->user_ns from new->user_ns. Which is totally silly as new->user_ns is NULL (as is every other field in new except session_keyring at that point). The intent is clearly to copy all of the fields from old to new so copy old->user_ns into into new->user_ns. Cc: stable@vger.kernel.org Reported-by: Dave Jones Tested-by: Dave Jones Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- security/keys/process_keys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c index 58dfe08..a571fad 100644 --- a/security/keys/process_keys.c +++ b/security/keys/process_keys.c @@ -839,7 +839,7 @@ void key_change_session_keyring(struct callback_head *twork) new-> sgid = old-> sgid; new->fsgid = old->fsgid; new->user = get_uid(old->user); - new->user_ns = get_user_ns(new->user_ns); + new->user_ns = get_user_ns(old->user_ns); new->group_info = get_group_info(old->group_info); new->securebits = old->securebits; -- cgit v1.1 From 7f78e0351394052e1a6293e175825eb5c7869507 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 2 Mar 2013 19:39:14 -0800 Subject: fs: Limit sys_mount to only request filesystem modules. Modify the request_module to prefix the file system type with "fs-" and add aliases to all of the filesystems that can be built as modules to match. A common practice is to build all of the kernel code and leave code that is not commonly needed as modules, with the result that many users are exposed to any bug anywhere in the kernel. Looking for filesystems with a fs- prefix limits the pool of possible modules that can be loaded by mount to just filesystems trivially making things safer with no real cost. Using aliases means user space can control the policy of which filesystem modules are auto-loaded by editing /etc/modprobe.d/*.conf with blacklist and alias directives. Allowing simple, safe, well understood work-arounds to known problematic software. This also addresses a rare but unfortunate problem where the filesystem name is not the same as it's module name and module auto-loading would not work. While writing this patch I saw a handful of such cases. The most significant being autofs that lives in the module autofs4. This is relevant to user namespaces because we can reach the request module in get_fs_type() without having any special permissions, and people get uncomfortable when a user specified string (in this case the filesystem type) goes all of the way to request_module. After having looked at this issue I don't think there is any particular reason to perform any filtering or permission checks beyond making it clear in the module request that we want a filesystem module. The common pattern in the kernel is to call request_module() without regards to the users permissions. In general all a filesystem module does once loaded is call register_filesystem() and go to sleep. Which means there is not much attack surface exposed by loading a filesytem module unless the filesystem is mounted. In a user namespace filesystems are not mounted unless .fs_flags = FS_USERNS_MOUNT, which most filesystems do not set today. Acked-by: Serge Hallyn Acked-by: Kees Cook Reported-by: Kees Cook Signed-off-by: "Eric W. Biederman" --- arch/ia64/kernel/perfmon.c | 1 + arch/powerpc/platforms/cell/spufs/inode.c | 1 + arch/s390/hypfs/inode.c | 1 + drivers/firmware/efivars.c | 1 + drivers/infiniband/hw/ipath/ipath_fs.c | 1 + drivers/infiniband/hw/qib/qib_fs.c | 1 + drivers/misc/ibmasm/ibmasmfs.c | 1 + drivers/mtd/mtdchar.c | 1 + drivers/oprofile/oprofilefs.c | 1 + drivers/staging/ccg/f_fs.c | 1 + drivers/usb/gadget/f_fs.c | 1 + drivers/usb/gadget/inode.c | 1 + drivers/xen/xenfs/super.c | 1 + fs/9p/vfs_super.c | 1 + fs/adfs/super.c | 1 + fs/affs/super.c | 1 + fs/afs/super.c | 1 + fs/autofs4/init.c | 1 + fs/befs/linuxvfs.c | 1 + fs/bfs/inode.c | 1 + fs/binfmt_misc.c | 1 + fs/btrfs/super.c | 1 + fs/ceph/super.c | 1 + fs/coda/inode.c | 1 + fs/configfs/mount.c | 1 + fs/cramfs/inode.c | 1 + fs/debugfs/inode.c | 1 + fs/devpts/inode.c | 1 + fs/ecryptfs/main.c | 1 + fs/efs/super.c | 1 + fs/exofs/super.c | 1 + fs/ext2/super.c | 1 + fs/ext3/super.c | 1 + fs/ext4/super.c | 5 +++-- fs/f2fs/super.c | 1 + fs/fat/namei_msdos.c | 1 + fs/fat/namei_vfat.c | 1 + fs/filesystems.c | 2 +- fs/freevxfs/vxfs_super.c | 2 +- fs/fuse/control.c | 1 + fs/fuse/inode.c | 2 ++ fs/gfs2/ops_fstype.c | 4 +++- fs/hfs/super.c | 1 + fs/hfsplus/super.c | 1 + fs/hppfs/hppfs.c | 1 + fs/hugetlbfs/inode.c | 1 + fs/isofs/inode.c | 3 +-- fs/jffs2/super.c | 1 + fs/jfs/super.c | 1 + fs/logfs/super.c | 1 + fs/minix/inode.c | 1 + fs/ncpfs/inode.c | 1 + fs/nfs/super.c | 3 ++- fs/nfsd/nfsctl.c | 1 + fs/nilfs2/super.c | 1 + fs/ntfs/super.c | 1 + fs/ocfs2/dlmfs/dlmfs.c | 1 + fs/omfs/inode.c | 1 + fs/openpromfs/inode.c | 1 + fs/qnx4/inode.c | 1 + fs/qnx6/inode.c | 1 + fs/reiserfs/super.c | 1 + fs/romfs/super.c | 1 + fs/sysv/super.c | 3 ++- fs/ubifs/super.c | 1 + fs/ufs/super.c | 1 + fs/xfs/xfs_super.c | 1 + include/linux/fs.h | 2 ++ net/sunrpc/rpc_pipe.c | 4 +--- 69 files changed, 77 insertions(+), 12 deletions(-) diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 433f5e8..2eda284 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -619,6 +619,7 @@ static struct file_system_type pfm_fs_type = { .mount = pfmfs_mount, .kill_sb = kill_anon_super, }; +MODULE_ALIAS_FS("pfmfs"); DEFINE_PER_CPU(unsigned long, pfm_syst_info); DEFINE_PER_CPU(struct task_struct *, pmu_owner); diff --git a/arch/powerpc/platforms/cell/spufs/inode.c b/arch/powerpc/platforms/cell/spufs/inode.c index 863184b..3f3bb4c 100644 --- a/arch/powerpc/platforms/cell/spufs/inode.c +++ b/arch/powerpc/platforms/cell/spufs/inode.c @@ -749,6 +749,7 @@ static struct file_system_type spufs_type = { .mount = spufs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("spufs"); static int __init spufs_init(void) { diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c index 8538015..5f7d7ba 100644 --- a/arch/s390/hypfs/inode.c +++ b/arch/s390/hypfs/inode.c @@ -456,6 +456,7 @@ static struct file_system_type hypfs_type = { .mount = hypfs_mount, .kill_sb = hypfs_kill_super }; +MODULE_ALIAS_FS("s390_hypfs"); static const struct super_operations hypfs_s_ops = { .statfs = simple_statfs, diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 7320bf8..3edade0 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -1234,6 +1234,7 @@ static struct file_system_type efivarfs_type = { .mount = efivarfs_mount, .kill_sb = efivarfs_kill_sb, }; +MODULE_ALIAS_FS("efivarfs"); /* * Handle negative dentry. diff --git a/drivers/infiniband/hw/ipath/ipath_fs.c b/drivers/infiniband/hw/ipath/ipath_fs.c index a479375..e0c404b 100644 --- a/drivers/infiniband/hw/ipath/ipath_fs.c +++ b/drivers/infiniband/hw/ipath/ipath_fs.c @@ -410,6 +410,7 @@ static struct file_system_type ipathfs_fs_type = { .mount = ipathfs_mount, .kill_sb = ipathfs_kill_super, }; +MODULE_ALIAS_FS("ipathfs"); int __init ipath_init_ipathfs(void) { diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c index 644bd6f..f247fc6e 100644 --- a/drivers/infiniband/hw/qib/qib_fs.c +++ b/drivers/infiniband/hw/qib/qib_fs.c @@ -604,6 +604,7 @@ static struct file_system_type qibfs_fs_type = { .mount = qibfs_mount, .kill_sb = qibfs_kill_super, }; +MODULE_ALIAS_FS("ipathfs"); int __init qib_init_qibfs(void) { diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c index 6673e57..ce5b756 100644 --- a/drivers/misc/ibmasm/ibmasmfs.c +++ b/drivers/misc/ibmasm/ibmasmfs.c @@ -110,6 +110,7 @@ static struct file_system_type ibmasmfs_type = { .mount = ibmasmfs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("ibmasmfs"); static int ibmasmfs_fill_super (struct super_block *sb, void *data, int silent) { diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 82c0616..92ab30a 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1238,6 +1238,7 @@ static struct file_system_type mtd_inodefs_type = { .mount = mtd_inodefs_mount, .kill_sb = kill_anon_super, }; +MODULE_ALIAS_FS("mtd_inodefs"); static int __init init_mtdchar(void) { diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c index 445ffda..7c12d9c 100644 --- a/drivers/oprofile/oprofilefs.c +++ b/drivers/oprofile/oprofilefs.c @@ -276,6 +276,7 @@ static struct file_system_type oprofilefs_type = { .mount = oprofilefs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("oprofilefs"); int __init oprofilefs_register(void) diff --git a/drivers/staging/ccg/f_fs.c b/drivers/staging/ccg/f_fs.c index 8adc79d..f6373da 100644 --- a/drivers/staging/ccg/f_fs.c +++ b/drivers/staging/ccg/f_fs.c @@ -1223,6 +1223,7 @@ static struct file_system_type ffs_fs_type = { .mount = ffs_fs_mount, .kill_sb = ffs_fs_kill_sb, }; +MODULE_ALIAS_FS("functionfs"); /* Driver's main init/cleanup functions *************************************/ diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 38388d7..c377ff8 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1235,6 +1235,7 @@ static struct file_system_type ffs_fs_type = { .mount = ffs_fs_mount, .kill_sb = ffs_fs_kill_sb, }; +MODULE_ALIAS_FS("functionfs"); /* Driver's main init/cleanup functions *************************************/ diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index 8ac840f..e2b2e9c 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -2105,6 +2105,7 @@ static struct file_system_type gadgetfs_type = { .mount = gadgetfs_mount, .kill_sb = gadgetfs_kill_sb, }; +MODULE_ALIAS_FS("gadgetfs"); /*----------------------------------------------------------------------*/ diff --git a/drivers/xen/xenfs/super.c b/drivers/xen/xenfs/super.c index ec0abb6..7167987 100644 --- a/drivers/xen/xenfs/super.c +++ b/drivers/xen/xenfs/super.c @@ -75,6 +75,7 @@ static struct file_system_type xenfs_type = { .mount = xenfs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("xenfs"); static int __init xenfs_init(void) { diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 91dad63..2756dcd 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -365,3 +365,4 @@ struct file_system_type v9fs_fs_type = { .owner = THIS_MODULE, .fs_flags = FS_RENAME_DOES_D_MOVE, }; +MODULE_ALIAS_FS("9p"); diff --git a/fs/adfs/super.c b/fs/adfs/super.c index d571229..0ff4bae 100644 --- a/fs/adfs/super.c +++ b/fs/adfs/super.c @@ -524,6 +524,7 @@ static struct file_system_type adfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("adfs"); static int __init init_adfs_fs(void) { diff --git a/fs/affs/super.c b/fs/affs/super.c index b84dc73..45161a8 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -622,6 +622,7 @@ static struct file_system_type affs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("affs"); static int __init init_affs_fs(void) { diff --git a/fs/afs/super.c b/fs/afs/super.c index 7c31ec3..c486155 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -45,6 +45,7 @@ struct file_system_type afs_fs_type = { .kill_sb = afs_kill_super, .fs_flags = 0, }; +MODULE_ALIAS_FS("afs"); static const struct super_operations afs_super_ops = { .statfs = afs_statfs, diff --git a/fs/autofs4/init.c b/fs/autofs4/init.c index cddc74b..b3db517 100644 --- a/fs/autofs4/init.c +++ b/fs/autofs4/init.c @@ -26,6 +26,7 @@ static struct file_system_type autofs_fs_type = { .mount = autofs_mount, .kill_sb = autofs4_kill_sb, }; +MODULE_ALIAS_FS("autofs"); static int __init init_autofs4_fs(void) { diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index c8f4e25..8615ee8 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -951,6 +951,7 @@ static struct file_system_type befs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("befs"); static int __init init_befs_fs(void) diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 737aaa3..5e376bb 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -473,6 +473,7 @@ static struct file_system_type bfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("bfs"); static int __init init_bfs_fs(void) { diff --git a/fs/binfmt_misc.c b/fs/binfmt_misc.c index fecbbf3..751df5e 100644 --- a/fs/binfmt_misc.c +++ b/fs/binfmt_misc.c @@ -720,6 +720,7 @@ static struct file_system_type bm_fs_type = { .mount = bm_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("binfmt_misc"); static int __init init_misc_binfmt(void) { diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 68a29a1..f6b8859 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1558,6 +1558,7 @@ static struct file_system_type btrfs_fs_type = { .kill_sb = btrfs_kill_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("btrfs"); /* * used by btrfsctl to scan devices when no FS is mounted diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 9fe17c6c..6ddc0bc 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -952,6 +952,7 @@ static struct file_system_type ceph_fs_type = { .kill_sb = ceph_kill_sb, .fs_flags = FS_RENAME_DOES_D_MOVE, }; +MODULE_ALIAS_FS("ceph"); #define _STRINGIFY(x) #x #define STRINGIFY(x) _STRINGIFY(x) diff --git a/fs/coda/inode.c b/fs/coda/inode.c index dada9d0..4dcc0d8 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -329,4 +329,5 @@ struct file_system_type coda_fs_type = { .kill_sb = kill_anon_super, .fs_flags = FS_BINARY_MOUNTDATA, }; +MODULE_ALIAS_FS("coda"); diff --git a/fs/configfs/mount.c b/fs/configfs/mount.c index aee0a7e..7f26c3c 100644 --- a/fs/configfs/mount.c +++ b/fs/configfs/mount.c @@ -114,6 +114,7 @@ static struct file_system_type configfs_fs_type = { .mount = configfs_do_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("configfs"); struct dentry *configfs_pin_fs(void) { diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index 3ceb9ec..35b1c7b 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -573,6 +573,7 @@ static struct file_system_type cramfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("cramfs"); static int __init init_cramfs_fs(void) { diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c index 0c4f80b..4888cb3 100644 --- a/fs/debugfs/inode.c +++ b/fs/debugfs/inode.c @@ -299,6 +299,7 @@ static struct file_system_type debug_fs_type = { .mount = debug_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("debugfs"); static struct dentry *__create_file(const char *name, umode_t mode, struct dentry *parent, void *data, diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index 073d30b..79b6629 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -510,6 +510,7 @@ static struct file_system_type devpts_fs_type = { .fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT, #endif }; +MODULE_ALIAS_FS("devpts"); /* * The normal naming convention is simply /dev/pts/; this conforms diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c index 4e0886c..e924cf4 100644 --- a/fs/ecryptfs/main.c +++ b/fs/ecryptfs/main.c @@ -629,6 +629,7 @@ static struct file_system_type ecryptfs_fs_type = { .kill_sb = ecryptfs_kill_block_super, .fs_flags = 0 }; +MODULE_ALIAS_FS("ecryptfs"); /** * inode_info_init_once diff --git a/fs/efs/super.c b/fs/efs/super.c index 2002431..c6f57a7 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -33,6 +33,7 @@ static struct file_system_type efs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("efs"); static struct pt_types sgi_pt_types[] = { {0x00, "SGI vh"}, diff --git a/fs/exofs/super.c b/fs/exofs/super.c index 5e59280..9d97633 100644 --- a/fs/exofs/super.c +++ b/fs/exofs/super.c @@ -1010,6 +1010,7 @@ static struct file_system_type exofs_type = { .mount = exofs_mount, .kill_sb = generic_shutdown_super, }; +MODULE_ALIAS_FS("exofs"); static int __init init_exofs(void) { diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 7f68c81..2885349 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1536,6 +1536,7 @@ static struct file_system_type ext2_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ext2"); static int __init init_ext2_fs(void) { diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 5546ca2..1d6e2ed 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -3068,6 +3068,7 @@ static struct file_system_type ext3_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ext3"); static int __init init_ext3_fs(void) { diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 5e6c878..34e8552 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -90,6 +90,7 @@ static struct file_system_type ext2_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ext2"); #define IS_EXT2_SB(sb) ((sb)->s_bdev->bd_holder == &ext2_fs_type) #else #define IS_EXT2_SB(sb) (0) @@ -104,6 +105,7 @@ static struct file_system_type ext3_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ext3"); #define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type) #else #define IS_EXT3_SB(sb) (0) @@ -5152,7 +5154,6 @@ static inline int ext2_feature_set_ok(struct super_block *sb) return 0; return 1; } -MODULE_ALIAS("ext2"); #else static inline void register_as_ext2(void) { } static inline void unregister_as_ext2(void) { } @@ -5185,7 +5186,6 @@ static inline int ext3_feature_set_ok(struct super_block *sb) return 0; return 1; } -MODULE_ALIAS("ext3"); #else static inline void register_as_ext3(void) { } static inline void unregister_as_ext3(void) { } @@ -5199,6 +5199,7 @@ static struct file_system_type ext4_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ext4"); static int __init ext4_init_feat_adverts(void) { diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 8c11764..fea6e58 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -687,6 +687,7 @@ static struct file_system_type f2fs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("f2fs"); static int __init init_inodecache(void) { diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c index e2cfda9..081b759 100644 --- a/fs/fat/namei_msdos.c +++ b/fs/fat/namei_msdos.c @@ -668,6 +668,7 @@ static struct file_system_type msdos_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("msdos"); static int __init init_msdos_fs(void) { diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c index ac959d6..2da9520 100644 --- a/fs/fat/namei_vfat.c +++ b/fs/fat/namei_vfat.c @@ -1073,6 +1073,7 @@ static struct file_system_type vfat_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("vfat"); static int __init init_vfat_fs(void) { diff --git a/fs/filesystems.c b/fs/filesystems.c index da165f6..92567d9 100644 --- a/fs/filesystems.c +++ b/fs/filesystems.c @@ -273,7 +273,7 @@ struct file_system_type *get_fs_type(const char *name) int len = dot ? dot - name : strlen(name); fs = __get_fs_type(name, len); - if (!fs && (request_module("%.*s", len, name) == 0)) + if (!fs && (request_module("fs-%.*s", len, name) == 0)) fs = __get_fs_type(name, len); if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) { diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index fed2c8a..4550743 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -52,7 +52,6 @@ MODULE_AUTHOR("Christoph Hellwig"); MODULE_DESCRIPTION("Veritas Filesystem (VxFS) driver"); MODULE_LICENSE("Dual BSD/GPL"); -MODULE_ALIAS("vxfs"); /* makes mount -t vxfs autoload the module */ static void vxfs_put_super(struct super_block *); @@ -258,6 +257,7 @@ static struct file_system_type vxfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("vxfs"); /* makes mount -t vxfs autoload the module */ static int __init vxfs_init(void) diff --git a/fs/fuse/control.c b/fs/fuse/control.c index b7978b9f..a0b0855 100644 --- a/fs/fuse/control.c +++ b/fs/fuse/control.c @@ -341,6 +341,7 @@ static struct file_system_type fuse_ctl_fs_type = { .mount = fuse_ctl_mount, .kill_sb = fuse_ctl_kill_sb, }; +MODULE_ALIAS_FS("fusectl"); int __init fuse_ctl_init(void) { diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index df00993..137185c 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -1117,6 +1117,7 @@ static struct file_system_type fuse_fs_type = { .mount = fuse_mount, .kill_sb = fuse_kill_sb_anon, }; +MODULE_ALIAS_FS("fuse"); #ifdef CONFIG_BLOCK static struct dentry *fuse_mount_blk(struct file_system_type *fs_type, @@ -1146,6 +1147,7 @@ static struct file_system_type fuseblk_fs_type = { .kill_sb = fuse_kill_sb_blk, .fs_flags = FS_REQUIRES_DEV | FS_HAS_SUBTYPE, }; +MODULE_ALIAS_FS("fuseblk"); static inline int register_fuseblk(void) { diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 1b612be..60ede2a 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -20,6 +20,7 @@ #include #include #include +#include #include "gfs2.h" #include "incore.h" @@ -1425,6 +1426,7 @@ struct file_system_type gfs2_fs_type = { .kill_sb = gfs2_kill_sb, .owner = THIS_MODULE, }; +MODULE_ALIAS_FS("gfs2"); struct file_system_type gfs2meta_fs_type = { .name = "gfs2meta", @@ -1432,4 +1434,4 @@ struct file_system_type gfs2meta_fs_type = { .mount = gfs2_mount_meta, .owner = THIS_MODULE, }; - +MODULE_ALIAS_FS("gfs2meta"); diff --git a/fs/hfs/super.c b/fs/hfs/super.c index e93ddaa..bbaaa8a 100644 --- a/fs/hfs/super.c +++ b/fs/hfs/super.c @@ -466,6 +466,7 @@ static struct file_system_type hfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("hfs"); static void hfs_init_once(void *p) { diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c index 974c26f..7b87284 100644 --- a/fs/hfsplus/super.c +++ b/fs/hfsplus/super.c @@ -654,6 +654,7 @@ static struct file_system_type hfsplus_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("hfsplus"); static void hfsplus_init_once(void *p) { diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c index 74f5570..126d3c2 100644 --- a/fs/hppfs/hppfs.c +++ b/fs/hppfs/hppfs.c @@ -748,6 +748,7 @@ static struct file_system_type hppfs_type = { .kill_sb = kill_anon_super, .fs_flags = 0, }; +MODULE_ALIAS_FS("hppfs"); static int __init init_hppfs(void) { diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 7f94e0c..84e3d85 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -896,6 +896,7 @@ static struct file_system_type hugetlbfs_fs_type = { .mount = hugetlbfs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("hugetlbfs"); static struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE]; diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 67ce52507..a67f16e 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -1556,6 +1556,7 @@ static struct file_system_type iso9660_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("iso9660"); static int __init init_iso9660_fs(void) { @@ -1593,5 +1594,3 @@ static void __exit exit_iso9660_fs(void) module_init(init_iso9660_fs) module_exit(exit_iso9660_fs) MODULE_LICENSE("GPL"); -/* Actual filesystem name is iso9660, as requested in filesystems.c */ -MODULE_ALIAS("iso9660"); diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c index d3d8799..0defb1c 100644 --- a/fs/jffs2/super.c +++ b/fs/jffs2/super.c @@ -356,6 +356,7 @@ static struct file_system_type jffs2_fs_type = { .mount = jffs2_mount, .kill_sb = jffs2_kill_sb, }; +MODULE_ALIAS_FS("jffs2"); static int __init init_jffs2_fs(void) { diff --git a/fs/jfs/super.c b/fs/jfs/super.c index 060ba63..2003e83 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -833,6 +833,7 @@ static struct file_system_type jfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("jfs"); static void init_once(void *foo) { diff --git a/fs/logfs/super.c b/fs/logfs/super.c index 345c24b..5436029 100644 --- a/fs/logfs/super.c +++ b/fs/logfs/super.c @@ -608,6 +608,7 @@ static struct file_system_type logfs_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("logfs"); static int __init logfs_init(void) { diff --git a/fs/minix/inode.c b/fs/minix/inode.c index 99541cc..df12249 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -660,6 +660,7 @@ static struct file_system_type minix_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("minix"); static int __init init_minix_fs(void) { diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c index 7dafd6899..26910c8 100644 --- a/fs/ncpfs/inode.c +++ b/fs/ncpfs/inode.c @@ -1051,6 +1051,7 @@ static struct file_system_type ncp_fs_type = { .kill_sb = kill_anon_super, .fs_flags = FS_BINARY_MOUNTDATA, }; +MODULE_ALIAS_FS("ncpfs"); static int __init init_ncp_fs(void) { diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 17b32b7..95cdcb2 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -294,6 +294,7 @@ struct file_system_type nfs_fs_type = { .kill_sb = nfs_kill_super, .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA, }; +MODULE_ALIAS_FS("nfs"); EXPORT_SYMBOL_GPL(nfs_fs_type); struct file_system_type nfs_xdev_fs_type = { @@ -333,6 +334,7 @@ struct file_system_type nfs4_fs_type = { .kill_sb = nfs_kill_super, .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA, }; +MODULE_ALIAS_FS("nfs4"); EXPORT_SYMBOL_GPL(nfs4_fs_type); static int __init register_nfs4_fs(void) @@ -2717,6 +2719,5 @@ module_param(send_implementation_id, ushort, 0644); MODULE_PARM_DESC(send_implementation_id, "Send implementation ID with NFSv4.1 exchange_id"); MODULE_PARM_DESC(nfs4_unique_id, "nfs_client_id4 uniquifier string"); -MODULE_ALIAS("nfs4"); #endif /* CONFIG_NFS_V4 */ diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 13a21c8..f33455b 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -1090,6 +1090,7 @@ static struct file_system_type nfsd_fs_type = { .mount = nfsd_mount, .kill_sb = nfsd_umount, }; +MODULE_ALIAS_FS("nfsd"); #ifdef CONFIG_PROC_FS static int create_proc_exports_entry(void) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 3c991dc..c7d1f9f 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -1361,6 +1361,7 @@ struct file_system_type nilfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("nilfs2"); static void nilfs_inode_init_once(void *obj) { diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c index 4a8289f8..82650d5 100644 --- a/fs/ntfs/super.c +++ b/fs/ntfs/super.c @@ -3079,6 +3079,7 @@ static struct file_system_type ntfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ntfs"); /* Stable names for the slab caches. */ static const char ntfs_index_ctx_cache_name[] = "ntfs_index_ctx_cache"; diff --git a/fs/ocfs2/dlmfs/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c index 4c5fc8d..12bafb7 100644 --- a/fs/ocfs2/dlmfs/dlmfs.c +++ b/fs/ocfs2/dlmfs/dlmfs.c @@ -640,6 +640,7 @@ static struct file_system_type dlmfs_fs_type = { .mount = dlmfs_mount, .kill_sb = kill_litter_super, }; +MODULE_ALIAS_FS("ocfs2_dlmfs"); static int __init init_dlmfs_fs(void) { diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index 25d715c..d8b0afd 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -572,6 +572,7 @@ static struct file_system_type omfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("omfs"); static int __init init_omfs_fs(void) { diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c index ae47fa7..75885ff 100644 --- a/fs/openpromfs/inode.c +++ b/fs/openpromfs/inode.c @@ -432,6 +432,7 @@ static struct file_system_type openprom_fs_type = { .mount = openprom_mount, .kill_sb = kill_anon_super, }; +MODULE_ALIAS_FS("openpromfs"); static void op_inode_init_once(void *data) { diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 43098bb..2e8caa6 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -412,6 +412,7 @@ static struct file_system_type qnx4_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("qnx4"); static int __init init_qnx4_fs(void) { diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c index 57199a5..8d941ed 100644 --- a/fs/qnx6/inode.c +++ b/fs/qnx6/inode.c @@ -672,6 +672,7 @@ static struct file_system_type qnx6_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("qnx6"); static int __init init_qnx6_fs(void) { diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 418bdc3..194113b 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2434,6 +2434,7 @@ struct file_system_type reiserfs_fs_type = { .kill_sb = reiserfs_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("reiserfs"); MODULE_DESCRIPTION("ReiserFS journaled filesystem"); MODULE_AUTHOR("Hans Reiser "); diff --git a/fs/romfs/super.c b/fs/romfs/super.c index 7e8d3a8..15cbc41e 100644 --- a/fs/romfs/super.c +++ b/fs/romfs/super.c @@ -599,6 +599,7 @@ static struct file_system_type romfs_fs_type = { .kill_sb = romfs_kill_sb, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("romfs"); /* * inode storage initialiser diff --git a/fs/sysv/super.c b/fs/sysv/super.c index a38e87b..a39938b 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -545,6 +545,7 @@ static struct file_system_type sysv_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("sysv"); static struct file_system_type v7_fs_type = { .owner = THIS_MODULE, @@ -553,6 +554,7 @@ static struct file_system_type v7_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("v7"); static int __init init_sysv_fs(void) { @@ -586,5 +588,4 @@ static void __exit exit_sysv_fs(void) module_init(init_sysv_fs) module_exit(exit_sysv_fs) -MODULE_ALIAS("v7"); MODULE_LICENSE("GPL"); diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index ddc0f6a..ac838b8 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -2174,6 +2174,7 @@ static struct file_system_type ubifs_fs_type = { .mount = ubifs_mount, .kill_sb = kill_ubifs_super, }; +MODULE_ALIAS_FS("ubifs"); /* * Inode slab cache constructor. diff --git a/fs/ufs/super.c b/fs/ufs/super.c index dc8e3a8..329f2f5 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -1500,6 +1500,7 @@ static struct file_system_type ufs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("ufs"); static int __init init_ufs_fs(void) { diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index c407121..ea341ce 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1561,6 +1561,7 @@ static struct file_system_type xfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("xfs"); STATIC int __init xfs_init_zones(void) diff --git a/include/linux/fs.h b/include/linux/fs.h index 74a907b..2c28271 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1825,6 +1825,8 @@ struct file_system_type { struct lock_class_key i_mutex_dir_key; }; +#define MODULE_ALIAS_FS(NAME) MODULE_ALIAS("fs-" NAME) + extern struct dentry *mount_ns(struct file_system_type *fs_type, int flags, void *data, int (*fill_super)(struct super_block *, void *, int)); extern struct dentry *mount_bdev(struct file_system_type *fs_type, diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 7b9b402..a0f48a5 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -1174,6 +1174,7 @@ static struct file_system_type rpc_pipe_fs_type = { .mount = rpc_mount, .kill_sb = rpc_kill_sb, }; +MODULE_ALIAS_FS("rpc_pipefs"); static void init_once(void *foo) @@ -1218,6 +1219,3 @@ void unregister_rpc_pipefs(void) kmem_cache_destroy(rpc_inode_cachep); unregister_filesystem(&rpc_pipe_fs_type); } - -/* Make 'mount -t rpc_pipefs ...' autoload this module. */ -MODULE_ALIAS("rpc_pipefs"); -- cgit v1.1 From 0371a1c5ae7d0543b3f948e47b2029987608acc2 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 4 Mar 2013 11:51:45 +1000 Subject: m68knommu: fix misnamed GPIO pin definition for ColdFire 528x CPU MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Compiling for a ColdFire 528x CPU will result in: arch/m68k/platform/coldfire/m528x.c: In function ‘m528x_uarts_init’: arch/m68k/platform/coldfire/m528x.c:72: error: ‘MCF5282_GPIO_PUAPAR’ undeclared (first use in this function) arch/m68k/platform/coldfire/m528x.c:72: error: (Each undeclared identifier is reported only once arch/m68k/platform/coldfire/m528x.c:72: error: for each function it appears in.) The MCF5282_GPIO_PUAPAR definition changed names in the ColdFire definitions cleanup. It is now MCFGPIO_PUAPAR, so change it. Not sure how this one got missed, 2 lines below it is the correct use of this definition. Signed-off-by: Greg Ungerer --- arch/m68k/platform/coldfire/m528x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/m68k/platform/coldfire/m528x.c b/arch/m68k/platform/coldfire/m528x.c index 83b7dad..b03a9d2 100644 --- a/arch/m68k/platform/coldfire/m528x.c +++ b/arch/m68k/platform/coldfire/m528x.c @@ -69,7 +69,7 @@ static void __init m528x_uarts_init(void) u8 port; /* make sure PUAPAR is set for UART0 and UART1 */ - port = readb(MCF5282_GPIO_PUAPAR); + port = readb(MCFGPIO_PUAPAR); port |= 0x03 | (0x03 << 2); writeb(port, MCFGPIO_PUAPAR); } -- cgit v1.1 From 357b66fdc8ad4cea6e6336956a70742f961f0a4d Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 4 Mar 2013 00:34:34 -0500 Subject: ext4: ext4_split_extent should take care of extent zeroout When ext4_split_extent_at() ends up doing zeroout & conversion to initialized instead of split & conversion, ext4_split_extent() gets confused and can wrongly mark the extent back as uninitialized resulting in end IO code getting confused from large unwritten extents and may result in data loss. The example of problematic behavior is: lblk len lblk len ext4_split_extent() (ex=[1000,30,uninit], map=[1010,10]) ext4_split_extent_at() (split [1000,30,uninit] at 1020) ext4_ext_insert_extent() -> ENOSPC ext4_ext_zeroout() -> extent [1000,30] is now initialized ext4_split_extent_at() (split [1000,30,init] at 1010, MARK_UNINIT1 | MARK_UNINIT2) -> extent is split and parts marked as uninitialized Fix the problem by rechecking extent type after the first ext4_split_extent_at() returns. None of split_flags can not be applied to initialized extent so this patch also add BUG_ON to prevent similar issues in future. TESTCASE: https://github.com/dmonakhov/xfstests/commit/b8a55eb5ce28c6ff29e620ab090902fcd5833597 Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara --- fs/ext4/extents.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 372b2cbe..bef194a 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2943,6 +2943,10 @@ static int ext4_split_extent_at(handle_t *handle, newblock = split - ee_block + ext4_ext_pblock(ex); BUG_ON(split < ee_block || split >= (ee_block + ee_len)); + BUG_ON(!ext4_ext_is_uninitialized(ex) && + split_flag & (EXT4_EXT_MAY_ZEROOUT | + EXT4_EXT_MARK_UNINIT1 | + EXT4_EXT_MARK_UNINIT2)); err = ext4_ext_get_access(handle, inode, path + depth); if (err) @@ -3061,19 +3065,26 @@ static int ext4_split_extent(handle_t *handle, if (err) goto out; } - + /* + * Update path is required because previous ext4_split_extent_at() may + * result in split of original leaf or extent zeroout. + */ ext4_ext_drop_refs(path); path = ext4_ext_find_extent(inode, map->m_lblk, path); if (IS_ERR(path)) return PTR_ERR(path); + depth = ext_depth(inode); + ex = path[depth].p_ext; + uninitialized = ext4_ext_is_uninitialized(ex); + split_flag1 = 0; if (map->m_lblk >= ee_block) { - split_flag1 = split_flag & (EXT4_EXT_MAY_ZEROOUT | - EXT4_EXT_DATA_VALID2); - if (uninitialized) + split_flag1 = split_flag & EXT4_EXT_DATA_VALID2; + if (uninitialized) { split_flag1 |= EXT4_EXT_MARK_UNINIT1; - if (split_flag & EXT4_EXT_MARK_UNINIT2) - split_flag1 |= EXT4_EXT_MARK_UNINIT2; + split_flag1 |= split_flag & (EXT4_EXT_MAY_ZEROOUT | + EXT4_EXT_MARK_UNINIT2); + } err = ext4_split_extent_at(handle, inode, path, map->m_lblk, split_flag1, flags); if (err) -- cgit v1.1 From ec22ba8edb507395c95fbc617eea26a6b2d98797 Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 4 Mar 2013 00:36:06 -0500 Subject: ext4: disable merging of uninitialized extents Derived from Jan's patch:http://permalink.gmane.org/gmane.comp.file-systems.ext4/36470 Merging of uninitialized extents creates all sorts of interesting race possibilities when writeback / DIO races with fallocate. Thus ext4_convert_unwritten_extents_endio() has to deal with a case where extent to be converted needs to be split out first. That isn't nice for two reasons: 1) It may need allocation of extent tree block so ENOSPC is possible. 2) It complicates end_io handling code So we disable merging of uninitialized extents which allows us to simplify the code. Extents will get merged after they are converted to initialized ones. Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara --- fs/ext4/extents.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index bef194a..60818ed 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -1584,10 +1584,12 @@ ext4_can_extents_be_merged(struct inode *inode, struct ext4_extent *ex1, unsigned short ext1_ee_len, ext2_ee_len, max_len; /* - * Make sure that either both extents are uninitialized, or - * both are _not_. + * Make sure that both extents are initialized. We don't merge + * uninitialized extents so that we can be sure that end_io code has + * the extent that was written properly split out and conversion to + * initialized is trivial. */ - if (ext4_ext_is_uninitialized(ex1) ^ ext4_ext_is_uninitialized(ex2)) + if (ext4_ext_is_uninitialized(ex1) || ext4_ext_is_uninitialized(ex2)) return 0; if (ext4_ext_is_uninitialized(ex1)) -- cgit v1.1 From ff95ec22cd7faa0d8b58dcc4207f21502df7b00b Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 4 Mar 2013 00:41:05 -0500 Subject: ext4: add warning to ext4_convert_unwritten_extents_endio Splitting extents inside endio is a bad thing, but unfortunately it is still possible. In fact we are pretty close to the moment when all related issues will be fixed. Let's warn developer if it still the case. Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara --- fs/ext4/extents.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 60818ed..265cb0e 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3387,8 +3387,19 @@ static int ext4_convert_unwritten_extents_endio(handle_t *handle, "block %llu, max_blocks %u\n", inode->i_ino, (unsigned long long)ee_block, ee_len); - /* If extent is larger than requested then split is required */ + /* If extent is larger than requested it is a clear sign that we still + * have some extent state machine issues left. So extent_split is still + * required. + * TODO: Once all related issues will be fixed this situation should be + * illegal. + */ if (ee_block != map->m_lblk || ee_len > map->m_len) { +#ifdef EXT4_DEBUG + ext4_warning("Inode (%ld) finished: extent logical block %llu," + " len %u; IO logical block %llu, len %u\n", + inode->i_ino, (unsigned long long)ee_block, ee_len, + (unsigned long long)map->m_lblk, map->m_len); +#endif err = ext4_split_unwritten_extents(handle, inode, map, path, EXT4_GET_BLOCKS_CONVERT); if (err < 0) -- cgit v1.1 From de99fcce1da7933a90198b80a2e896754ea3bdc8 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 4 Mar 2013 00:43:32 -0500 Subject: ext4: remove unnecessary wait for extent conversion in ext4_fallocate() Now that we don't merge uninitialized extents anymore, ext4_fallocate() is free to operate on the inode while there are still some extent conversions pending - it won't disturb them in any way. Reviewed-by: Zheng Liu Reviewed-by: Dmitry Monakhov Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 265cb0e..25c86aa 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4392,8 +4392,6 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) if (len <= EXT_UNINIT_MAX_LEN << blkbits) flags |= EXT4_GET_BLOCKS_NO_NORMALIZE; - /* Prevent race condition between unwritten */ - ext4_flush_unwritten_io(inode); retry: while (ret >= 0 && ret < max_blocks) { map.m_lblk = map.m_lblk + ret; -- cgit v1.1 From e3333e572f29109740b48302035a59f9db0fa8e9 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 20 Feb 2013 20:58:42 -0800 Subject: hwmon: Update my e-mail address in driver documentation Most of the hwmon driver documentation still listed my old invalid e-mail address. Fix it. Signed-off-by: Guenter Roeck Acked-by: Jean Delvare --- Documentation/hwmon/adm1275 | 2 +- Documentation/hwmon/jc42 | 2 +- Documentation/hwmon/lineage-pem | 2 +- Documentation/hwmon/lm25066 | 2 +- Documentation/hwmon/ltc2978 | 2 +- Documentation/hwmon/ltc4261 | 2 +- Documentation/hwmon/max16064 | 2 +- Documentation/hwmon/max16065 | 2 +- Documentation/hwmon/max34440 | 2 +- Documentation/hwmon/max8688 | 2 +- Documentation/hwmon/pmbus | 2 +- Documentation/hwmon/smm665 | 2 +- Documentation/hwmon/ucd9000 | 2 +- Documentation/hwmon/ucd9200 | 2 +- Documentation/hwmon/zl6100 | 2 +- 15 files changed, 15 insertions(+), 15 deletions(-) diff --git a/Documentation/hwmon/adm1275 b/Documentation/hwmon/adm1275 index 2cfa256..15b4a20 100644 --- a/Documentation/hwmon/adm1275 +++ b/Documentation/hwmon/adm1275 @@ -15,7 +15,7 @@ Supported chips: Addresses scanned: - Datasheet: www.analog.com/static/imported-files/data_sheets/ADM1276.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/jc42 b/Documentation/hwmon/jc42 index 1650771..868d74d 100644 --- a/Documentation/hwmon/jc42 +++ b/Documentation/hwmon/jc42 @@ -49,7 +49,7 @@ Supported chips: Addresses scanned: I2C 0x18 - 0x1f Author: - Guenter Roeck + Guenter Roeck Description diff --git a/Documentation/hwmon/lineage-pem b/Documentation/hwmon/lineage-pem index 2ba5ed1..83b2ddc 100644 --- a/Documentation/hwmon/lineage-pem +++ b/Documentation/hwmon/lineage-pem @@ -8,7 +8,7 @@ Supported devices: Documentation: http://www.lineagepower.com/oem/pdf/CPLI2C.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/lm25066 b/Documentation/hwmon/lm25066 index a21db81..26025e4 100644 --- a/Documentation/hwmon/lm25066 +++ b/Documentation/hwmon/lm25066 @@ -19,7 +19,7 @@ Supported chips: Datasheet: http://www.national.com/pf/LM/LM5066.html -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 index c365f9b..1642348 100644 --- a/Documentation/hwmon/ltc2978 +++ b/Documentation/hwmon/ltc2978 @@ -11,7 +11,7 @@ Supported chips: Addresses scanned: - Datasheet: http://cds.linear.com/docs/Datasheet/3880f.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/ltc4261 b/Documentation/hwmon/ltc4261 index eba2e2c..9378a75 100644 --- a/Documentation/hwmon/ltc4261 +++ b/Documentation/hwmon/ltc4261 @@ -8,7 +8,7 @@ Supported chips: Datasheet: http://cds.linear.com/docs/Datasheet/42612fb.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/max16064 b/Documentation/hwmon/max16064 index f8b4780..d59cc78 100644 --- a/Documentation/hwmon/max16064 +++ b/Documentation/hwmon/max16064 @@ -7,7 +7,7 @@ Supported chips: Addresses scanned: - Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX16064.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/max16065 b/Documentation/hwmon/max16065 index c11f64a..208a29e 100644 --- a/Documentation/hwmon/max16065 +++ b/Documentation/hwmon/max16065 @@ -24,7 +24,7 @@ Supported chips: http://datasheets.maxim-ic.com/en/ds/MAX16070-MAX16071.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440 index 47651ff..37cbf47 100644 --- a/Documentation/hwmon/max34440 +++ b/Documentation/hwmon/max34440 @@ -27,7 +27,7 @@ Supported chips: Addresses scanned: - Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX34461.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/max8688 b/Documentation/hwmon/max8688 index fe84987..e780786 100644 --- a/Documentation/hwmon/max8688 +++ b/Documentation/hwmon/max8688 @@ -7,7 +7,7 @@ Supported chips: Addresses scanned: - Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX8688.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/pmbus b/Documentation/hwmon/pmbus index 3d3a0f9..cf756ed 100644 --- a/Documentation/hwmon/pmbus +++ b/Documentation/hwmon/pmbus @@ -34,7 +34,7 @@ Supported chips: Addresses scanned: - Datasheet: n.a. -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/smm665 b/Documentation/hwmon/smm665 index 59e3161..a341eee 100644 --- a/Documentation/hwmon/smm665 +++ b/Documentation/hwmon/smm665 @@ -29,7 +29,7 @@ Supported chips: http://www.summitmicro.com/prod_select/summary/SMM766/SMM766_2086.pdf http://www.summitmicro.com/prod_select/summary/SMM766B/SMM766B_2122.pdf -Author: Guenter Roeck +Author: Guenter Roeck Module Parameters diff --git a/Documentation/hwmon/ucd9000 b/Documentation/hwmon/ucd9000 index 0df5f27..805e33e 100644 --- a/Documentation/hwmon/ucd9000 +++ b/Documentation/hwmon/ucd9000 @@ -11,7 +11,7 @@ Supported chips: http://focus.ti.com/lit/ds/symlink/ucd9090.pdf http://focus.ti.com/lit/ds/symlink/ucd90910.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/ucd9200 b/Documentation/hwmon/ucd9200 index fd7d07b..1e8060e 100644 --- a/Documentation/hwmon/ucd9200 +++ b/Documentation/hwmon/ucd9200 @@ -15,7 +15,7 @@ Supported chips: http://focus.ti.com/lit/ds/symlink/ucd9246.pdf http://focus.ti.com/lit/ds/symlink/ucd9248.pdf -Author: Guenter Roeck +Author: Guenter Roeck Description diff --git a/Documentation/hwmon/zl6100 b/Documentation/hwmon/zl6100 index 3d924b6..756b57c 100644 --- a/Documentation/hwmon/zl6100 +++ b/Documentation/hwmon/zl6100 @@ -54,7 +54,7 @@ http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146401 http://archive.ericsson.net/service/internet/picov/get?DocNo=28701-EN/LZT146256 -Author: Guenter Roeck +Author: Guenter Roeck Description -- cgit v1.1 From 6d21a416562c2532f45cbcd40f47653f61d45533 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 27 Jan 2013 09:36:36 -0800 Subject: hwmon: (pmbus/ltc2978) Update datasheet links Links to datasheets are no longer valid. Provide links to product information instead (which provides links to the datasheets and is hopefully more persistent). Signed-off-by: Guenter Roeck Acked-by: Jean Delvare --- Documentation/hwmon/ltc2978 | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978 index 1642348..e4d75c6 100644 --- a/Documentation/hwmon/ltc2978 +++ b/Documentation/hwmon/ltc2978 @@ -5,11 +5,11 @@ Supported chips: * Linear Technology LTC2978 Prefix: 'ltc2978' Addresses scanned: - - Datasheet: http://cds.linear.com/docs/Datasheet/2978fa.pdf + Datasheet: http://www.linear.com/product/ltc2978 * Linear Technology LTC3880 Prefix: 'ltc3880' Addresses scanned: - - Datasheet: http://cds.linear.com/docs/Datasheet/3880f.pdf + Datasheet: http://www.linear.com/product/ltc3880 Author: Guenter Roeck -- cgit v1.1 From dbd712c2272764a536e29ad6841dba74989a39d9 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 21 Feb 2013 09:33:25 -0800 Subject: hwmon: (pmbus/ltc2978) Fix peak attribute handling Peak attributes were not initialized and cleared correctly. Also, temp2_max is only supported on page 0 and thus does not need to be an array. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.2+ Acked-by: Jean Delvare --- drivers/hwmon/pmbus/ltc2978.c | 28 +++++++++++++++------------- 1 file changed, 15 insertions(+), 13 deletions(-) diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 9652a2c..cc29a7e 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -62,7 +62,7 @@ struct ltc2978_data { int temp_min, temp_max; int vout_min[8], vout_max[8]; int iout_max[2]; - int temp2_max[2]; + int temp2_max; struct pmbus_driver_info info; }; @@ -204,10 +204,9 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg) ret = pmbus_read_word_data(client, page, LTC3880_MFR_TEMPERATURE2_PEAK); if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->temp2_max[page])) - data->temp2_max[page] = ret; - ret = data->temp2_max[page]; + if (lin11_to_val(ret) > lin11_to_val(data->temp2_max)) + data->temp2_max = ret; + ret = data->temp2_max; } break; case PMBUS_VIRT_READ_VIN_MIN: @@ -248,11 +247,11 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, switch (reg) { case PMBUS_VIRT_RESET_IOUT_HISTORY: - data->iout_max[page] = 0x7fff; + data->iout_max[page] = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_TEMP2_HISTORY: - data->temp2_max[page] = 0x7fff; + data->temp2_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: @@ -262,12 +261,12 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, break; case PMBUS_VIRT_RESET_VIN_HISTORY: data->vin_min = 0x7bff; - data->vin_max = 0; + data->vin_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; case PMBUS_VIRT_RESET_TEMP_HISTORY: data->temp_min = 0x7bff; - data->temp_max = 0x7fff; + data->temp_max = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; default: @@ -321,10 +320,11 @@ static int ltc2978_probe(struct i2c_client *client, info = &data->info; info->write_word_data = ltc2978_write_word_data; - data->vout_min[0] = 0xffff; data->vin_min = 0x7bff; + data->vin_max = 0x7c00; data->temp_min = 0x7bff; - data->temp_max = 0x7fff; + data->temp_max = 0x7c00; + data->temp2_max = 0x7c00; switch (id->driver_data) { case ltc2978: @@ -336,7 +336,6 @@ static int ltc2978_probe(struct i2c_client *client, for (i = 1; i < 8; i++) { info->func[i] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT; - data->vout_min[i] = 0xffff; } break; case ltc3880: @@ -352,11 +351,14 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; - data->vout_min[1] = 0xffff; + data->iout_max[0] = 0x7c00; + data->iout_max[1] = 0x7c00; break; default: return -ENODEV; } + for (i = 0; i < info->pages; i++) + data->vout_min[i] = 0xffff; return pmbus_do_probe(client, id, info); } -- cgit v1.1 From f366fccd0809f13ba20d64cae3c83f7338c88af7 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 21 Feb 2013 10:49:40 -0800 Subject: hwmon: (pmbus/ltc2978) Use detected chip ID to select supported functionality We read the chip ID from the chip, use it to determine if the chip ID provided to the driver is correct, and report it if wrong. We should also use the correct chip ID to select supported functionality. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.2+ Acked-by: Jean Delvare --- drivers/hwmon/pmbus/ltc2978.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index cc29a7e..a58de38 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -326,7 +326,7 @@ static int ltc2978_probe(struct i2c_client *client, data->temp_max = 0x7c00; data->temp2_max = 0x7c00; - switch (id->driver_data) { + switch (data->id) { case ltc2978: info->read_word_data = ltc2978_read_word_data; info->pages = 8; -- cgit v1.1 From ab302bb0b87fe01f3110c1c5d5a6fca439d27c6b Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Thu, 28 Feb 2013 13:05:13 +0100 Subject: hwmon: (adt7410) Document ADT7420 support The adt7410 driver supports the ADT7420, but its documentation file makes no mention of that. Add this refrence, and a brief a description of the differences between the ADT7410 and the ADT7420. Signed-off-by: Jean Delvare Cc: Lars-Peter Clausen Cc: Hartmut Knaack Cc: Guenter Roeck Signed-off-by: Guenter Roeck --- Documentation/hwmon/adt7410 | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/Documentation/hwmon/adt7410 b/Documentation/hwmon/adt7410 index 9600400..58150c4 100644 --- a/Documentation/hwmon/adt7410 +++ b/Documentation/hwmon/adt7410 @@ -4,9 +4,14 @@ Kernel driver adt7410 Supported chips: * Analog Devices ADT7410 Prefix: 'adt7410' - Addresses scanned: I2C 0x48 - 0x4B + Addresses scanned: None Datasheet: Publicly available at the Analog Devices website http://www.analog.com/static/imported-files/data_sheets/ADT7410.pdf + * Analog Devices ADT7420 + Prefix: 'adt7420' + Addresses scanned: None + Datasheet: Publicly available at the Analog Devices website + http://www.analog.com/static/imported-files/data_sheets/ADT7420.pdf Author: Hartmut Knaack @@ -27,6 +32,10 @@ value per second or even justget one sample on demand for power saving. Besides, it can completely power down its ADC, if power management is required. +The ADT7420 is register compatible, the only differences being the package, +a slightly narrower operating temperature range (-40°C to +150°C), and a +better accuracy (0.25°C instead of 0.50°C.) + Configuration Notes ------------------- -- cgit v1.1 From 3e78080f81481aa8340374d5a37ae033c1cf4272 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 2 Mar 2013 15:33:30 +0800 Subject: hwmon: (sht15) Check return value of regulator_enable() Not having power is a pretty serious error so check that we are able to enable the supply and error out if we can't. Signed-off-by: Mark Brown Cc: stable@vger.kernel.org #3.8+; 3.0+ will need manual backport Signed-off-by: Guenter Roeck --- drivers/hwmon/sht15.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c index bfe326e..2507f90 100644 --- a/drivers/hwmon/sht15.c +++ b/drivers/hwmon/sht15.c @@ -965,7 +965,13 @@ static int sht15_probe(struct platform_device *pdev) if (voltage) data->supply_uv = voltage; - regulator_enable(data->reg); + ret = regulator_enable(data->reg); + if (ret != 0) { + dev_err(&pdev->dev, + "failed to enable regulator: %d\n", ret); + return ret; + } + /* * Setup a notifier block to update this if another device * causes the voltage to change -- cgit v1.1 From 6ca470d7b5e7639b7925b3202e796282703b6d5d Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 4 Mar 2013 00:50:47 -0500 Subject: ext4: invalidate extent status tree during extent migration mext_replace_branches() will change inode's extents layout so we have to drop corresponding cache. TESTCASE: 301'th xfstest was not yet accepted to official xfstest's branch and can be found here: https://github.com/dmonakhov/xfstests/commit/7b7efeee30a41109201e2040034e71db9b66ddc0 Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara --- fs/ext4/move_extent.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index d78c33e..c1f15b2 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -666,6 +666,14 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode, int replaced_count = 0; int dext_alen; + *err = ext4_es_remove_extent(orig_inode, from, count); + if (*err) + goto out; + + *err = ext4_es_remove_extent(donor_inode, from, count); + if (*err) + goto out; + /* Get the original extent for the block "orig_off" */ *err = get_ext_path(orig_inode, orig_off, &orig_path); if (*err) -- cgit v1.1 From d9b4330adec006c2e8907bdcacd9dcc0e8874d18 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 8 Feb 2013 15:14:16 +0200 Subject: usb: dwc3: core: don't forget to free coherent memory commit 3921426 (usb: dwc3: core: move event buffer allocation out of dwc3_core_init()) introduced a memory leak of the coherent memory we use as event buffers on dwc3 driver. If the driver is compiled as a dynamically loadable module and use constantly loads and unloads the driver, we will continue to leak the coherent memory allocated during ->probe() because dwc3_free_event_buffers() is never called during ->remove(). Cc: # v3.7 v3.8 Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 9999094..ffa6b00 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -583,6 +583,7 @@ static int dwc3_remove(struct platform_device *pdev) break; } + dwc3_free_event_buffers(dwc); dwc3_core_exit(dwc); return 0; -- cgit v1.1 From 2c2dc89cc5d68ca161d50011cdcbf8aa830b9498 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 11 Feb 2013 10:31:15 +0200 Subject: usb: dwc3: omap: fix a typo on of_device_id s/matach/match No functional changes Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-omap.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 22f337f..90171f7 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -465,20 +465,20 @@ static int dwc3_omap_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id of_dwc3_matach[] = { +static const struct of_device_id of_dwc3_match[] = { { "ti,dwc3", }, { }, }; -MODULE_DEVICE_TABLE(of, of_dwc3_matach); +MODULE_DEVICE_TABLE(of, of_dwc3_match); static struct platform_driver dwc3_omap_driver = { .probe = dwc3_omap_probe, .remove = dwc3_omap_remove, .driver = { .name = "omap-dwc3", - .of_match_table = of_dwc3_matach, + .of_match_table = of_dwc3_match, }, }; -- cgit v1.1 From d82f3e3cd88053836a2dd928b5545873cbdcf7da Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 12 Feb 2013 10:48:55 +0200 Subject: usb: dwc3: glue layers shouldn't know about the core IP remove inclusion of "core.h" from all glue layers as they don't need to know details about the core IP. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/dwc3-exynos.c | 2 -- drivers/usb/dwc3/dwc3-omap.c | 2 -- drivers/usb/dwc3/dwc3-pci.c | 2 -- 3 files changed, 6 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index b50da53..b082bec 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -23,8 +23,6 @@ #include #include -#include "core.h" - struct dwc3_exynos { struct platform_device *dwc3; struct platform_device *usb2_phy; diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 90171f7..afa05e3 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -54,8 +54,6 @@ #include #include -#include "core.h" - /* * All these registers belong to OMAP's Wrapper around the * DesignWare USB3 Core. diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c index 7d70f44..e8d7768 100644 --- a/drivers/usb/dwc3/dwc3-pci.c +++ b/drivers/usb/dwc3/dwc3-pci.c @@ -45,8 +45,6 @@ #include #include -#include "core.h" - /* FIXME define these in */ #define PCI_VENDOR_ID_SYNOPSYS 0x16c3 #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3 0xabcd -- cgit v1.1 From e5b29b25f8f88ece53579fa87580bb2973815977 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 15 Feb 2013 10:45:42 +0200 Subject: usb: dwc3: gadget: remove unnecessary code the params variables on dwc3_gadget_conndone_interrupt() is only memset() to zero but never used in that function, so we can safely drop the variable and memset() call. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index a04342f..82e160e 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2159,7 +2159,6 @@ static void dwc3_gadget_phy_suspend(struct dwc3 *dwc, u8 speed) static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) { - struct dwc3_gadget_ep_cmd_params params; struct dwc3_ep *dep; int ret; u32 reg; @@ -2167,8 +2166,6 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) dev_vdbg(dwc->dev, "%s\n", __func__); - memset(¶ms, 0x00, sizeof(params)); - reg = dwc3_readl(dwc->regs, DWC3_DSTS); speed = reg & DWC3_DSTS_CONNECTSPD; dwc->speed = speed; -- cgit v1.1 From 2b7dc3b1a6cd23cb75ada8505fa80687acd4fa04 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 24 Jan 2013 17:34:32 +0200 Subject: usb: chipidea: register debugging sysfs on our device Don't register anything non-generic under the gadget's device as we don't really *own* it. Signed-off-by: Felipe Balbi --- drivers/usb/chipidea/udc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 2f45bba..f64fbea 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1767,7 +1767,7 @@ static int udc_start(struct ci13xxx *ci) goto put_transceiver; } - retval = dbg_create_files(&ci->gadget.dev); + retval = dbg_create_files(ci->dev); if (retval) goto unreg_device; @@ -1796,7 +1796,7 @@ remove_trans: dev_err(dev, "error = %i\n", retval); remove_dbg: - dbg_remove_files(&ci->gadget.dev); + dbg_remove_files(ci->dev); unreg_device: device_unregister(&ci->gadget.dev); put_transceiver: @@ -1836,7 +1836,7 @@ static void udc_stop(struct ci13xxx *ci) if (ci->global_phy) usb_put_phy(ci->transceiver); } - dbg_remove_files(&ci->gadget.dev); + dbg_remove_files(ci->dev); device_unregister(&ci->gadget.dev); /* my kobject is dynamic, I swear! */ memset(&ci->gadget, 0, sizeof(ci->gadget)); -- cgit v1.1 From fe2a4297b40c0ccee0e2276b06fb0afe1fc63da4 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 25 Feb 2013 08:49:05 +0200 Subject: usb: gadget: pxa27x: fix gadget->dev registration Whenever ->udc_start() gets called, gadget driver has already being bound to the udc controller, which means that gadget->dev had to be already initialized and added to driver model. This patch fixes pxa27x mistake. Tested-by: Robert Jarzmik Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa27x_udc.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index f7d2579..2fc8676 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -1814,11 +1814,6 @@ static int pxa27x_udc_start(struct usb_gadget *g, udc->gadget.dev.driver = &driver->driver; dplus_pullup(udc, 1); - retval = device_add(&udc->gadget.dev); - if (retval) { - dev_err(udc->dev, "device_add error %d\n", retval); - goto fail; - } if (!IS_ERR_OR_NULL(udc->transceiver)) { retval = otg_set_peripheral(udc->transceiver->otg, &udc->gadget); @@ -1876,7 +1871,6 @@ static int pxa27x_udc_stop(struct usb_gadget *g, udc->driver = NULL; - device_del(&udc->gadget.dev); if (!IS_ERR_OR_NULL(udc->transceiver)) return otg_set_peripheral(udc->transceiver->otg, NULL); @@ -2480,13 +2474,24 @@ static int __init pxa_udc_probe(struct platform_device *pdev) driver_name, udc->irq, retval); goto err_irq; } + + retval = device_add(&udc->gadget.dev); + if (retval) { + dev_err(udc->dev, "device_add error %d\n", retval); + goto err_dev_add; + } + retval = usb_add_gadget_udc(&pdev->dev, &udc->gadget); if (retval) goto err_add_udc; pxa_init_debugfs(udc); + return 0; + err_add_udc: + device_unregister(&udc->gadget.dev); +err_dev_add: free_irq(udc->irq, udc); err_irq: iounmap(udc->regs); @@ -2507,6 +2512,7 @@ static int __exit pxa_udc_remove(struct platform_device *_dev) int gpio = udc->mach->gpio_pullup; usb_del_gadget_udc(&udc->gadget); + device_del(&udc->gadget.dev); usb_gadget_unregister_driver(udc->driver); free_irq(udc->irq, udc); pxa_cleanup_debugfs(udc); -- cgit v1.1 From 56aa45adcc5b793369e535a4b7177f1c7314b577 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Wed, 6 Feb 2013 14:20:34 +0530 Subject: usb: gadget: make usb functions to load before gadget driver The current ordering in makefile makes gadget drivers be loaded before usb functions which causes usb_get_function_instance() to fail when gadget modules are statically linked to the kernel binary. Changed the ordering here so that USB functions are loaded before gadget drivers. Note that this is only a temporary solution and a more robust fix is needed in the long run. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/gadget/Makefile | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index 97a13c3..82fb225 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -35,6 +35,12 @@ mv_udc-y := mv_udc_core.o obj-$(CONFIG_USB_FUSB300) += fusb300_udc.o obj-$(CONFIG_USB_MV_U3D) += mv_u3d_core.o +# USB Functions +obj-$(CONFIG_USB_F_ACM) += f_acm.o +f_ss_lb-y := f_loopback.o f_sourcesink.o +obj-$(CONFIG_USB_F_SS_LB) += f_ss_lb.o +obj-$(CONFIG_USB_U_SERIAL) += u_serial.o + # # USB gadget drivers # @@ -74,9 +80,3 @@ obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o obj-$(CONFIG_USB_G_NCM) += g_ncm.o obj-$(CONFIG_USB_G_ACM_MS) += g_acm_ms.o obj-$(CONFIG_USB_GADGET_TARGET) += tcm_usb_gadget.o - -# USB Functions -obj-$(CONFIG_USB_F_ACM) += f_acm.o -f_ss_lb-y := f_loopback.o f_sourcesink.o -obj-$(CONFIG_USB_F_SS_LB) += f_ss_lb.o -obj-$(CONFIG_USB_U_SERIAL) += u_serial.o -- cgit v1.1 From 7597a49b1e984bfb9930f832af963de1120d30e4 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 25 Feb 2013 21:11:50 +0200 Subject: usb: gadget: s3c2410: fix gadget->dev registration Whenever ->udc_start() gets called, gadget driver has already being bound to the udc controller, which means that gadget->dev had to be already initialized and added to driver model. This patch fixes s3c2410 mistake. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c2410_udc.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index fc07b43..9404858 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1669,7 +1669,6 @@ static int s3c2410_udc_start(struct usb_gadget *g, struct usb_gadget_driver *driver) { struct s3c2410_udc *udc = to_s3c2410(g) - int retval; dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name); @@ -1677,22 +1676,10 @@ static int s3c2410_udc_start(struct usb_gadget *g, udc->driver = driver; udc->gadget.dev.driver = &driver->driver; - /* Bind the driver */ - retval = device_add(&udc->gadget.dev); - if (retval) { - dev_err(&udc->gadget.dev, "Error in device_add() : %d\n", retval); - goto register_error; - } - /* Enable udc */ s3c2410_udc_enable(udc); return 0; - -register_error: - udc->driver = NULL; - udc->gadget.dev.driver = NULL; - return retval; } static int s3c2410_udc_stop(struct usb_gadget *g, @@ -1700,7 +1687,6 @@ static int s3c2410_udc_stop(struct usb_gadget *g, { struct s3c2410_udc *udc = to_s3c2410(g); - device_del(&udc->gadget.dev); udc->driver = NULL; /* Disable udc */ @@ -1842,6 +1828,13 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc->gadget.dev.parent = &pdev->dev; udc->gadget.dev.dma_mask = pdev->dev.dma_mask; + /* Bind the driver */ + retval = device_add(&udc->gadget.dev); + if (retval) { + dev_err(&udc->gadget.dev, "Error in device_add() : %d\n", retval); + goto err_device_add; + } + the_controller = udc; platform_set_drvdata(pdev, udc); @@ -1930,6 +1923,8 @@ err_gpio_claim: err_int: free_irq(IRQ_USBD, udc); err_map: + device_unregister(&udc->gadget.dev); +err_device_add: iounmap(base_addr); err_mem: release_mem_region(rsrc_start, rsrc_len); @@ -1947,10 +1942,11 @@ static int s3c2410_udc_remove(struct platform_device *pdev) dev_dbg(&pdev->dev, "%s()\n", __func__); - usb_del_gadget_udc(&udc->gadget); if (udc->driver) return -EBUSY; + usb_del_gadget_udc(&udc->gadget); + device_unregister(&udc->gadget.dev); debugfs_remove(udc->regs_info); if (udc_info && !udc_info->udc_command && -- cgit v1.1 From 9992a9979fd463903e1a34b68d609441f36bafd4 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 25 Feb 2013 21:15:41 +0200 Subject: usb: gadget: pxa25x: fix gadget->dev registration Whenever ->udc_start() gets called, gadget driver has already being bound to the udc controller, which means that gadget->dev had to be already initialized and added to driver model. This patch fixes pxa25x mistake. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa25x_udc.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 2bbcdce..9aa9dd5 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -1266,13 +1266,6 @@ static int pxa25x_udc_start(struct usb_gadget *g, dev->gadget.dev.driver = &driver->driver; dev->pullup = 1; - retval = device_add (&dev->gadget.dev); - if (retval) { - dev->driver = NULL; - dev->gadget.dev.driver = NULL; - return retval; - } - /* ... then enable host detection and ep0; and we're ready * for set_configuration as well as eventual disconnect. */ @@ -1331,7 +1324,6 @@ static int pxa25x_udc_stop(struct usb_gadget*g, dev->gadget.dev.driver = NULL; dev->driver = NULL; - device_del (&dev->gadget.dev); dump_state(dev); return 0; @@ -2146,6 +2138,13 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) dev->gadget.dev.parent = &pdev->dev; dev->gadget.dev.dma_mask = pdev->dev.dma_mask; + retval = device_add(&dev->gadget.dev); + if (retval) { + dev->driver = NULL; + dev->gadget.dev.driver = NULL; + goto err_device_add; + } + the_controller = dev; platform_set_drvdata(pdev, dev); @@ -2196,6 +2195,8 @@ lubbock_fail0: free_irq(irq, dev); #endif err_irq1: + device_unregister(&dev->gadget.dev); + err_device_add: if (gpio_is_valid(dev->mach->gpio_pullup)) gpio_free(dev->mach->gpio_pullup); err_gpio_pullup: @@ -2217,10 +2218,11 @@ static int __exit pxa25x_udc_remove(struct platform_device *pdev) { struct pxa25x_udc *dev = platform_get_drvdata(pdev); - usb_del_gadget_udc(&dev->gadget); if (dev->driver) return -EBUSY; + usb_del_gadget_udc(&dev->gadget); + device_unregister(&dev->gadget.dev); dev->pullup = 0; pullup(dev); -- cgit v1.1 From bc530a72726d54357ea3a10e82761f203201e5b2 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 25 Feb 2013 21:17:59 +0200 Subject: usb: gadget: imx_udc: fix gadget->dev registration Whenever ->udc_start() gets called, gadget driver has already being bound to the udc controller, which means that gadget->dev had to be already initialized and added to driver model. This patch fixes imx_udc mistake. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/imx_udc.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c index 8efd7555..5bd930d 100644 --- a/drivers/usb/gadget/imx_udc.c +++ b/drivers/usb/gadget/imx_udc.c @@ -1334,27 +1334,18 @@ static int imx_udc_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { struct imx_udc_struct *imx_usb; - int retval; imx_usb = container_of(gadget, struct imx_udc_struct, gadget); /* first hook up the driver ... */ imx_usb->driver = driver; imx_usb->gadget.dev.driver = &driver->driver; - retval = device_add(&imx_usb->gadget.dev); - if (retval) - goto fail; - D_INI(imx_usb->dev, "<%s> registered gadget driver '%s'\n", __func__, driver->driver.name); imx_udc_enable(imx_usb); return 0; -fail: - imx_usb->driver = NULL; - imx_usb->gadget.dev.driver = NULL; - return retval; } static int imx_udc_stop(struct usb_gadget *gadget, @@ -1370,8 +1361,6 @@ static int imx_udc_stop(struct usb_gadget *gadget, imx_usb->gadget.dev.driver = NULL; imx_usb->driver = NULL; - device_del(&imx_usb->gadget.dev); - D_INI(imx_usb->dev, "<%s> unregistered gadget driver '%s'\n", __func__, driver->driver.name); @@ -1477,6 +1466,10 @@ static int __init imx_udc_probe(struct platform_device *pdev) imx_usb->gadget.dev.parent = &pdev->dev; imx_usb->gadget.dev.dma_mask = pdev->dev.dma_mask; + ret = device_add(&imx_usb->gadget.dev); + if (retval) + goto fail4; + platform_set_drvdata(pdev, imx_usb); usb_init_data(imx_usb); @@ -1488,9 +1481,11 @@ static int __init imx_udc_probe(struct platform_device *pdev) ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget); if (ret) - goto fail4; + goto fail5; return 0; +fail5: + device_unregister(&imx_usb->gadget.dev); fail4: for (i = 0; i < IMX_USB_NB_EP + 1; i++) free_irq(imx_usb->usbd_int[i], imx_usb); @@ -1514,6 +1509,7 @@ static int __exit imx_udc_remove(struct platform_device *pdev) int i; usb_del_gadget_udc(&imx_usb->gadget); + device_unregister(&imx_usb->gadget.dev); imx_udc_disable(imx_usb); del_timer(&imx_usb->timer); -- cgit v1.1 From 4ea34de7615c1208a08bce3ff75c234cca03c654 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 25 Feb 2013 21:25:04 +0200 Subject: usb: gadget: s3c2410: fix build breakage add missing semicolon to fix compile breakage. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c2410_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 9404858..08f8965 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1668,7 +1668,7 @@ static void s3c2410_udc_enable(struct s3c2410_udc *dev) static int s3c2410_udc_start(struct usb_gadget *g, struct usb_gadget_driver *driver) { - struct s3c2410_udc *udc = to_s3c2410(g) + struct s3c2410_udc *udc = to_s3c2410(g); dprintk(DEBUG_NORMAL, "%s() '%s'\n", __func__, driver->driver.name); -- cgit v1.1 From a10840c9acbeca7aada3543823fdb59909342d96 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Thu, 31 Jan 2013 13:30:40 +0100 Subject: usb: musb: correct Kconfig in order to avoid non compilable selection Currently it is possible to have: USB_MUSB_OMAP2PLUS=m TWL4030_USB=y which would result compile time error due to missing symbols. With this change USB_MUSB_OMAP2PLUS and TWL4030_USB will be in sync. Reported-by: Vincent Stehle Signed-off-by: Peter Ujfalusi Signed-off-by: Felipe Balbi --- drivers/usb/musb/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 45b19e2..2f7d84a 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -9,8 +9,6 @@ config USB_MUSB_HDRC depends on USB && USB_GADGET select NOP_USB_XCEIV if (ARCH_DAVINCI || MACH_OMAP3EVM || BLACKFIN) select NOP_USB_XCEIV if (SOC_TI81XX || SOC_AM33XX) - select TWL4030_USB if MACH_OMAP_3430SDP - select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA select OMAP_CONTROL_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA select USB_OTG_UTILS help @@ -51,6 +49,8 @@ config USB_MUSB_TUSB6010 config USB_MUSB_OMAP2PLUS tristate "OMAP2430 and onwards" depends on ARCH_OMAP2PLUS + select TWL4030_USB if MACH_OMAP_3430SDP + select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA config USB_MUSB_AM35X tristate "AM35x" -- cgit v1.1 From 1dd03d8a510dae402096b194385a1373100450dc Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Wed, 27 Feb 2013 15:11:13 +0100 Subject: usb: otg: use try_module_get in all usb_get_phy functions and add missing module_put In patch "5d3c28b usb: otg: add device tree support to otg library" devm_usb_get_phy_by_phandle() was added. It uses try_module_get() to lock the phy driver in memory. The corresponding module_put() is missing in that patch. This patch adds try_module_get() to usb_get_phy() and usb_get_phy_dev(). Further the missing module_put() is added to usb_put_phy(). Tested-by: Steffen Trumtrar Reviewed-by: Kishon Vijay Abraham I Signed-off-by: Marc Kleine-Budde Signed-off-by: Michael Grzeschik Signed-off-by: Felipe Balbi --- drivers/usb/otg/otg.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/usb/otg/otg.c b/drivers/usb/otg/otg.c index e181439..2bd03d2 100644 --- a/drivers/usb/otg/otg.c +++ b/drivers/usb/otg/otg.c @@ -130,7 +130,7 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type) spin_lock_irqsave(&phy_lock, flags); phy = __usb_find_phy(&phy_list, type); - if (IS_ERR(phy)) { + if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { pr_err("unable to find transceiver of type %s\n", usb_phy_type_string(type)); goto err0; @@ -228,7 +228,7 @@ struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index) spin_lock_irqsave(&phy_lock, flags); phy = __usb_find_phy_dev(dev, &phy_bind_list, index); - if (IS_ERR(phy)) { + if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) { pr_err("unable to find transceiver\n"); goto err0; } @@ -301,8 +301,12 @@ EXPORT_SYMBOL(devm_usb_put_phy); */ void usb_put_phy(struct usb_phy *x) { - if (x) + if (x) { + struct module *owner = x->dev->driver->owner; + put_device(x->dev); + module_put(owner); + } } EXPORT_SYMBOL(usb_put_phy); -- cgit v1.1 From 290502bee239062499297916bb7d21d205e99d62 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Thu, 28 Feb 2013 00:39:37 -0800 Subject: eCryptfs: allow userspace messaging to be disabled When the userspace messaging (for the less common case of userspace key wrap/unwrap via ecryptfsd) is not needed, allow eCryptfs to build with it removed. This saves on kernel code size and reduces potential attack surface by removing the /dev/ecryptfs node. Signed-off-by: Kees Cook Signed-off-by: Tyler Hicks --- fs/ecryptfs/Kconfig | 8 ++++++++ fs/ecryptfs/Makefile | 7 +++++-- fs/ecryptfs/ecryptfs_kernel.h | 40 ++++++++++++++++++++++++++++++++++++++-- fs/ecryptfs/keystore.c | 4 ++-- include/linux/ecryptfs.h | 12 ++---------- 5 files changed, 55 insertions(+), 16 deletions(-) diff --git a/fs/ecryptfs/Kconfig b/fs/ecryptfs/Kconfig index cc16562..1f63120 100644 --- a/fs/ecryptfs/Kconfig +++ b/fs/ecryptfs/Kconfig @@ -12,3 +12,11 @@ config ECRYPT_FS To compile this file system support as a module, choose M here: the module will be called ecryptfs. + +config ECRYPT_FS_MESSAGING + bool "Enable notifications for userspace key wrap/unwrap" + depends on ECRYPT_FS + help + Enables the /dev/ecryptfs entry for use by ecryptfsd. This allows + for userspace to wrap/unwrap file encryption keys by other + backends, like OpenSSL. diff --git a/fs/ecryptfs/Makefile b/fs/ecryptfs/Makefile index 2cc9ee4..49678a6 100644 --- a/fs/ecryptfs/Makefile +++ b/fs/ecryptfs/Makefile @@ -1,7 +1,10 @@ # -# Makefile for the Linux 2.6 eCryptfs +# Makefile for the Linux eCryptfs # obj-$(CONFIG_ECRYPT_FS) += ecryptfs.o -ecryptfs-objs := dentry.o file.o inode.o main.o super.o mmap.o read_write.o crypto.o keystore.o messaging.o miscdev.o kthread.o debug.o +ecryptfs-y := dentry.o file.o inode.o main.o super.o mmap.o read_write.o \ + crypto.o keystore.o kthread.o debug.o + +ecryptfs-$(CONFIG_ECRYPT_FS_MESSAGING) += messaging.o miscdev.o diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h index cfb4b9f..a9df69e 100644 --- a/fs/ecryptfs/ecryptfs_kernel.h +++ b/fs/ecryptfs/ecryptfs_kernel.h @@ -172,6 +172,19 @@ ecryptfs_get_key_payload_data(struct key *key) #define ECRYPTFS_FNEK_ENCRYPTED_FILENAME_PREFIX_SIZE 24 #define ECRYPTFS_ENCRYPTED_DENTRY_NAME_LEN (18 + 1 + 4 + 1 + 32) +#ifdef CONFIG_ECRYPT_FS_MESSAGING +# define ECRYPTFS_VERSIONING_MASK_MESSAGING (ECRYPTFS_VERSIONING_DEVMISC \ + | ECRYPTFS_VERSIONING_PUBKEY) +#else +# define ECRYPTFS_VERSIONING_MASK_MESSAGING 0 +#endif + +#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \ + | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \ + | ECRYPTFS_VERSIONING_XATTR \ + | ECRYPTFS_VERSIONING_MULTKEY \ + | ECRYPTFS_VERSIONING_MASK_MESSAGING \ + | ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION) struct ecryptfs_key_sig { struct list_head crypt_stat_list; char keysig[ECRYPTFS_SIG_SIZE_HEX + 1]; @@ -399,7 +412,9 @@ struct ecryptfs_daemon { struct hlist_node euid_chain; }; +#ifdef CONFIG_ECRYPT_FS_MESSAGING extern struct mutex ecryptfs_daemon_hash_mux; +#endif static inline size_t ecryptfs_lower_header_size(struct ecryptfs_crypt_stat *crypt_stat) @@ -604,6 +619,7 @@ int ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value, size_t size, int flags); int ecryptfs_read_xattr_region(char *page_virt, struct inode *ecryptfs_inode); +#ifdef CONFIG_ECRYPT_FS_MESSAGING int ecryptfs_process_response(struct ecryptfs_daemon *daemon, struct ecryptfs_message *msg, u32 seq); int ecryptfs_send_message(char *data, int data_len, @@ -612,6 +628,24 @@ int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx, struct ecryptfs_message **emsg); int ecryptfs_init_messaging(void); void ecryptfs_release_messaging(void); +#else +static inline int ecryptfs_init_messaging(void) +{ + return 0; +} +static inline void ecryptfs_release_messaging(void) +{ } +static inline int ecryptfs_send_message(char *data, int data_len, + struct ecryptfs_msg_ctx **msg_ctx) +{ + return -ENOTCONN; +} +static inline int ecryptfs_wait_for_response(struct ecryptfs_msg_ctx *msg_ctx, + struct ecryptfs_message **emsg) +{ + return -ENOMSG; +} +#endif void ecryptfs_write_header_metadata(char *virt, @@ -649,12 +683,11 @@ int ecryptfs_read_lower_page_segment(struct page *page_for_ecryptfs, size_t offset_in_page, size_t size, struct inode *ecryptfs_inode); struct page *ecryptfs_get_locked_page(struct inode *inode, loff_t index); -int ecryptfs_exorcise_daemon(struct ecryptfs_daemon *daemon); -int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon); int ecryptfs_parse_packet_length(unsigned char *data, size_t *size, size_t *length_size); int ecryptfs_write_packet_length(char *dest, size_t size, size_t *packet_size_length); +#ifdef CONFIG_ECRYPT_FS_MESSAGING int ecryptfs_init_ecryptfs_miscdev(void); void ecryptfs_destroy_ecryptfs_miscdev(void); int ecryptfs_send_miscdev(char *data, size_t data_size, @@ -663,6 +696,9 @@ int ecryptfs_send_miscdev(char *data, size_t data_size, void ecryptfs_msg_ctx_alloc_to_free(struct ecryptfs_msg_ctx *msg_ctx); int ecryptfs_spawn_daemon(struct ecryptfs_daemon **daemon, struct file *file); +int ecryptfs_exorcise_daemon(struct ecryptfs_daemon *daemon); +int ecryptfs_find_daemon_by_euid(struct ecryptfs_daemon **daemon); +#endif int ecryptfs_init_kthread(void); void ecryptfs_destroy_kthread(void); int ecryptfs_privileged_open(struct file **lower_file, diff --git a/fs/ecryptfs/keystore.c b/fs/ecryptfs/keystore.c index 5aceff2..7d52806 100644 --- a/fs/ecryptfs/keystore.c +++ b/fs/ecryptfs/keystore.c @@ -1168,7 +1168,7 @@ decrypt_pki_encrypted_session_key(struct ecryptfs_auth_tok *auth_tok, rc = ecryptfs_send_message(payload, payload_len, &msg_ctx); if (rc) { ecryptfs_printk(KERN_ERR, "Error sending message to " - "ecryptfsd\n"); + "ecryptfsd: %d\n", rc); goto out; } rc = ecryptfs_wait_for_response(msg_ctx, &msg); @@ -1988,7 +1988,7 @@ pki_encrypt_session_key(struct key *auth_tok_key, rc = ecryptfs_send_message(payload, payload_len, &msg_ctx); if (rc) { ecryptfs_printk(KERN_ERR, "Error sending message to " - "ecryptfsd\n"); + "ecryptfsd: %d\n", rc); goto out; } rc = ecryptfs_wait_for_response(msg_ctx, &msg); diff --git a/include/linux/ecryptfs.h b/include/linux/ecryptfs.h index 2224a8c..8d5ab99 100644 --- a/include/linux/ecryptfs.h +++ b/include/linux/ecryptfs.h @@ -6,9 +6,8 @@ #define ECRYPTFS_VERSION_MINOR 0x04 #define ECRYPTFS_SUPPORTED_FILE_VERSION 0x03 /* These flags indicate which features are supported by the kernel - * module; userspace tools such as the mount helper read - * ECRYPTFS_VERSIONING_MASK from a sysfs handle in order to determine - * how to behave. */ + * module; userspace tools such as the mount helper read the feature + * bits from a sysfs handle in order to determine how to behave. */ #define ECRYPTFS_VERSIONING_PASSPHRASE 0x00000001 #define ECRYPTFS_VERSIONING_PUBKEY 0x00000002 #define ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH 0x00000004 @@ -19,13 +18,6 @@ #define ECRYPTFS_VERSIONING_HMAC 0x00000080 #define ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION 0x00000100 #define ECRYPTFS_VERSIONING_GCM 0x00000200 -#define ECRYPTFS_VERSIONING_MASK (ECRYPTFS_VERSIONING_PASSPHRASE \ - | ECRYPTFS_VERSIONING_PLAINTEXT_PASSTHROUGH \ - | ECRYPTFS_VERSIONING_PUBKEY \ - | ECRYPTFS_VERSIONING_XATTR \ - | ECRYPTFS_VERSIONING_MULTKEY \ - | ECRYPTFS_VERSIONING_DEVMISC \ - | ECRYPTFS_VERSIONING_FILENAME_ENCRYPTION) #define ECRYPTFS_MAX_PASSWORD_LENGTH 64 #define ECRYPTFS_MAX_PASSPHRASE_BYTES ECRYPTFS_MAX_PASSWORD_LENGTH #define ECRYPTFS_SALT_SIZE 8 -- cgit v1.1 From 34dcfb8479ab3c3669561eb9279284cb0eda2572 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 27 Feb 2013 22:30:24 +0100 Subject: TTY: disable debugging warning We added a warning to flush_to_ldisc to report cases when it is called with a NULL tty. It was for debugging purposes and it lead to a patchset from Peter Hurley. The patchset however did not make it to 3.9, so disable the warning now to not disturb people. We can re-add it when the series is in and we are hunting for another bugs. Reported-by: David Miller Cc: stable # 3.8 Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/tty/tty_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c index bb11993..578aa75 100644 --- a/drivers/tty/tty_buffer.c +++ b/drivers/tty/tty_buffer.c @@ -425,7 +425,7 @@ static void flush_to_ldisc(struct work_struct *work) struct tty_ldisc *disc; tty = port->itty; - if (WARN_RATELIMIT(tty == NULL, "tty is NULL\n")) + if (tty == NULL) return; disc = tty_ldisc_ref(tty); -- cgit v1.1 From 0010aeed7bfdc8d1048e524d285a69c11e0ac336 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Tue, 26 Feb 2013 11:34:34 +0000 Subject: metag: remove SET_PERSONALITY() Commit e72837e3e7bae3f182c4ac63c9424e86f1158dd0 ("default SET_PERSONALITY() in linux/elf.h"). The above commit moved the common definition of SET_PERSONALITY() in a bunch of the arch headers to linux/elf.h. Metag shares that common definition so remove it from arch/metag/include/asm/elf.h too. Signed-off-by: James Hogan --- arch/metag/include/asm/elf.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/metag/include/asm/elf.h b/arch/metag/include/asm/elf.h index d63b9d0..d2baf69 100644 --- a/arch/metag/include/asm/elf.h +++ b/arch/metag/include/asm/elf.h @@ -100,9 +100,6 @@ typedef unsigned long elf_fpregset_t; #define ELF_PLATFORM (NULL) -#define SET_PERSONALITY(ex) \ - set_personality(PER_LINUX | (current->personality & (~PER_MASK))) - #define STACK_RND_MASK (0) #ifdef CONFIG_METAG_USER_TCM -- cgit v1.1 From 40f09f3cd69a356b4245794e46439674336413fb Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Mon, 4 Mar 2013 10:12:35 +0900 Subject: metag: Inhibit NUMA balancing. The metag NUMA implementation follows the SH model, using different nodes for memories with different latencies. As such, we ensure that automated balancing between nodes is inhibited, by way of the new ARCH_WANT_VARIABLE_LOCALITY. Signed-off-by: Paul Mundt Signed-off-by: James Hogan --- arch/metag/mm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/metag/mm/Kconfig b/arch/metag/mm/Kconfig index cd7f2f2..975f2f4 100644 --- a/arch/metag/mm/Kconfig +++ b/arch/metag/mm/Kconfig @@ -40,6 +40,7 @@ endchoice config NUMA bool "Non Uniform Memory Access (NUMA) Support" + select ARCH_WANT_NUMA_VARIABLE_LOCALITY help Some Meta systems have MMU-mappable on-chip memories with lower latencies than main memory. This enables support for -- cgit v1.1 From a40070410329fb704aedf9451732ffb92a3fe39f Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 14:05:41 +0530 Subject: usb: phy: samsung: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Reviewed-by: Thierry Reding Signed-off-by: Sachin Kamat Signed-off-by: Felipe Balbi --- drivers/usb/phy/samsung-usbphy.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/usb/phy/samsung-usbphy.c b/drivers/usb/phy/samsung-usbphy.c index 6ea5537..967101e 100644 --- a/drivers/usb/phy/samsung-usbphy.c +++ b/drivers/usb/phy/samsung-usbphy.c @@ -787,11 +787,9 @@ static int samsung_usbphy_probe(struct platform_device *pdev) return -ENODEV; } - phy_base = devm_request_and_ioremap(dev, phy_mem); - if (!phy_base) { - dev_err(dev, "%s: register mapping failed\n", __func__); - return -ENXIO; - } + phy_base = devm_ioremap_resource(dev, phy_mem); + if (IS_ERR(phy_base)) + return PTR_ERR(phy_base); sphy = devm_kzalloc(dev, sizeof(*sphy), GFP_KERNEL); if (!sphy) -- cgit v1.1 From 862421da0d82a3c35aa89e040a533f76d24c62c4 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 14:05:42 +0530 Subject: usb: phy: omap-usb3: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Reviewed-by: Thierry Reding Signed-off-by: Sachin Kamat Cc: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/phy/omap-usb3.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/usb/phy/omap-usb3.c b/drivers/usb/phy/omap-usb3.c index fadc0c2..a6e60b1 100644 --- a/drivers/usb/phy/omap-usb3.c +++ b/drivers/usb/phy/omap-usb3.c @@ -212,11 +212,9 @@ static int omap_usb3_probe(struct platform_device *pdev) } res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll_ctrl"); - phy->pll_ctrl_base = devm_request_and_ioremap(&pdev->dev, res); - if (!phy->pll_ctrl_base) { - dev_err(&pdev->dev, "ioremap of pll_ctrl failed\n"); - return -ENOMEM; - } + phy->pll_ctrl_base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(phy->pll_ctrl_base)) + return PTR_ERR(phy->pll_ctrl_base); phy->dev = &pdev->dev; -- cgit v1.1 From 57ae575b8a51fd98c9b0066c6c030d5ccce3d77d Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 14:05:43 +0530 Subject: usb: phy: omap-control-usb: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Reviewed-by: Thierry Reding Signed-off-by: Sachin Kamat Cc: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/phy/omap-control-usb.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/drivers/usb/phy/omap-control-usb.c b/drivers/usb/phy/omap-control-usb.c index 5323b71..1419ced 100644 --- a/drivers/usb/phy/omap-control-usb.c +++ b/drivers/usb/phy/omap-control-usb.c @@ -219,32 +219,26 @@ static int omap_control_usb_probe(struct platform_device *pdev) res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "control_dev_conf"); - control_usb->dev_conf = devm_request_and_ioremap(&pdev->dev, res); - if (!control_usb->dev_conf) { - dev_err(&pdev->dev, "Failed to obtain io memory\n"); - return -EADDRNOTAVAIL; - } + control_usb->dev_conf = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(control_usb->dev_conf)) + return PTR_ERR(control_usb->dev_conf); if (control_usb->type == OMAP_CTRL_DEV_TYPE1) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otghs_control"); - control_usb->otghs_control = devm_request_and_ioremap( + control_usb->otghs_control = devm_ioremap_resource( &pdev->dev, res); - if (!control_usb->otghs_control) { - dev_err(&pdev->dev, "Failed to obtain io memory\n"); - return -EADDRNOTAVAIL; - } + if (IS_ERR(control_usb->otghs_control)) + return PTR_ERR(control_usb->otghs_control); } if (control_usb->type == OMAP_CTRL_DEV_TYPE2) { res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy_power_usb"); - control_usb->phy_power = devm_request_and_ioremap( + control_usb->phy_power = devm_ioremap_resource( &pdev->dev, res); - if (!control_usb->phy_power) { - dev_dbg(&pdev->dev, "Failed to obtain io memory\n"); - return -EADDRNOTAVAIL; - } + if (IS_ERR(control_usb->phy_power)) + return PTR_ERR(control_usb->phy_power); control_usb->sys_clk = devm_clk_get(control_usb->dev, "sys_clkin"); -- cgit v1.1 From fddedd8334d8b4ac6374894d5eed237d18ce1afb Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 28 Feb 2013 07:43:12 +0300 Subject: usb: gadget: f_uac1: silence an info leak warning Smatch complains that "len" could be larger than the sizeof(value) so we could be copying garbage here. I have changed this to match how things are done in composite_setup(). The call tree looks like: composite_setup() --> f_audio_setup() --> audio_get_intf_req() composite_setup() expects the return value to be set to sizeof(value). Signed-off-by: Dan Carpenter Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_uac1.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/f_uac1.c b/drivers/usb/gadget/f_uac1.c index f570e66..fa8ea4e 100644 --- a/drivers/usb/gadget/f_uac1.c +++ b/drivers/usb/gadget/f_uac1.c @@ -418,6 +418,7 @@ static int audio_get_intf_req(struct usb_function *f, req->context = audio; req->complete = f_audio_complete; + len = min_t(size_t, sizeof(value), len); memcpy(req->buf, &value, len); return len; -- cgit v1.1 From 29240e2392786c39007df2f4162f3dc4680f3dec Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 28 Feb 2013 07:44:38 +0300 Subject: usb: gadget: u_uac1: NULL dereference on error path We should return here with an error code instead of continuing. Signed-off-by: Dan Carpenter Signed-off-by: Felipe Balbi --- drivers/usb/gadget/u_uac1.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c index e0c5e88..c7d460f 100644 --- a/drivers/usb/gadget/u_uac1.c +++ b/drivers/usb/gadget/u_uac1.c @@ -240,8 +240,11 @@ static int gaudio_open_snd_dev(struct gaudio *card) snd = &card->playback; snd->filp = filp_open(fn_play, O_WRONLY, 0); if (IS_ERR(snd->filp)) { + int ret = PTR_ERR(snd->filp); + ERROR(card, "No such PCM playback device: %s\n", fn_play); snd->filp = NULL; + return ret; } pcm_file = snd->filp->private_data; snd->substream = pcm_file->substream; -- cgit v1.1 From 715c998ff4d1106c3096bc5a48e4196663e6701a Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 28 Feb 2013 08:57:31 +0200 Subject: iwlwifi: mvm: restart the NIC of the cmd queue gets full This situation is clearly an error situation and the only way to recover is to restart the driver / fw. Signed-off-by: Emmanuel Grumbach Reviewed-by: Ilan Peer Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/ops.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/ops.c b/drivers/net/wireless/iwlwifi/mvm/ops.c index aa59adf..d0f9c1e 100644 --- a/drivers/net/wireless/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/iwlwifi/mvm/ops.c @@ -624,12 +624,8 @@ static void iwl_mvm_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb) ieee80211_free_txskb(mvm->hw, skb); } -static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) +static void iwl_mvm_nic_restart(struct iwl_mvm *mvm) { - struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); - - iwl_mvm_dump_nic_error_log(mvm); - iwl_abort_notification_waits(&mvm->notif_wait); /* @@ -663,9 +659,21 @@ static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) } } +static void iwl_mvm_nic_error(struct iwl_op_mode *op_mode) +{ + struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + + iwl_mvm_dump_nic_error_log(mvm); + + iwl_mvm_nic_restart(mvm); +} + static void iwl_mvm_cmd_queue_full(struct iwl_op_mode *op_mode) { + struct iwl_mvm *mvm = IWL_OP_MODE_GET_MVM(op_mode); + WARN_ON(1); + iwl_mvm_nic_restart(mvm); } static const struct iwl_op_mode_ops iwl_mvm_ops = { -- cgit v1.1 From e07cbb536acb249db5fd63f6884354630ae875ad Mon Sep 17 00:00:00 2001 From: Dor Shaish Date: Wed, 27 Feb 2013 23:00:27 +0200 Subject: iwlwifi: mvm: Set valid TX antennas value before calib request We must set the valid TX antennas number in the ucode before sending the phy_cfg_cmd and request for calibrations. Signed-off-by: Dor Shaish Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/fw.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c index d3d959d..e6d51a9 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/iwlwifi/mvm/fw.c @@ -446,6 +446,11 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans); WARN_ON(ret); + /* Send TX valid antennas before triggering calibrations */ + ret = iwl_send_tx_ant_cfg(mvm, mvm->nvm_data->valid_tx_ant); + if (ret) + goto error; + /* Override the calibrations from TLV and the const of fw */ iwl_set_default_calib_trigger(mvm); -- cgit v1.1 From 6221d47cf7a57eb1e2b5b51c65e2edcde369a0d4 Mon Sep 17 00:00:00 2001 From: Dor Shaish Date: Wed, 27 Feb 2013 15:55:48 +0200 Subject: iwlwifi: mvm: Take the phy_cfg from the TLV value The phy_cfg is given from the TLV value and does not have to be built by us. Signed-off-by: Dor Shaish Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/fw.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c index e6d51a9..d3c067e 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/iwlwifi/mvm/fw.c @@ -241,20 +241,6 @@ static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm, return 0; } -#define IWL_HW_REV_ID_RAINBOW 0x2 -#define IWL_PROJ_TYPE_LHP 0x5 - -static u32 iwl_mvm_build_phy_cfg(struct iwl_mvm *mvm) -{ - struct iwl_nvm_data *data = mvm->nvm_data; - /* Temp calls to static definitions, will be changed to CSR calls */ - u8 hw_rev_id = IWL_HW_REV_ID_RAINBOW; - u8 project_type = IWL_PROJ_TYPE_LHP; - - return data->radio_cfg_dash | (data->radio_cfg_step << 2) | - (hw_rev_id << 4) | ((project_type & 0x7f) << 6) | - (data->valid_tx_ant << 16) | (data->valid_rx_ant << 20); -} static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm) { @@ -262,7 +248,7 @@ static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm) enum iwl_ucode_type ucode_type = mvm->cur_ucode; /* Set parameters */ - phy_cfg_cmd.phy_cfg = cpu_to_le32(iwl_mvm_build_phy_cfg(mvm)); + phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config); phy_cfg_cmd.calib_control.event_trigger = mvm->fw->default_calib[ucode_type].event_trigger; phy_cfg_cmd.calib_control.flow_trigger = -- cgit v1.1 From de8bc6dd2d52cacaa76ea381ffdc00919b100a2c Mon Sep 17 00:00:00 2001 From: Dor Shaish Date: Wed, 27 Feb 2013 13:01:09 +0200 Subject: iwlwifi: mvm: Remove overriding calibrations for the 7000 family This fix removes the override of calibration request values sent to the FW. Due to that, the sending of default values to now implemented calibrations is removed. Signed-off-by: Dor Shaish Reviewed-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/fw.c | 114 ---------------------------------- 1 file changed, 114 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw.c b/drivers/net/wireless/iwlwifi/mvm/fw.c index d3c067e..500f818 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/iwlwifi/mvm/fw.c @@ -79,17 +79,8 @@ #define UCODE_VALID_OK cpu_to_le32(0x1) /* Default calibration values for WkP - set to INIT image w/o running */ -static const u8 wkp_calib_values_bb_filter[] = { 0xbf, 0x00, 0x5f, 0x00, 0x2f, - 0x00, 0x18, 0x00 }; -static const u8 wkp_calib_values_rx_dc[] = { 0x7f, 0x7f, 0x7f, 0x7f, 0x7f, - 0x7f, 0x7f, 0x7f }; -static const u8 wkp_calib_values_tx_lo[] = { 0x00, 0x00, 0x00, 0x00 }; -static const u8 wkp_calib_values_tx_iq[] = { 0xff, 0x00, 0xff, 0x00, 0x00, - 0x00 }; -static const u8 wkp_calib_values_rx_iq[] = { 0xff, 0x00, 0x00, 0x00 }; static const u8 wkp_calib_values_rx_iq_skew[] = { 0x00, 0x00, 0x01, 0x00 }; static const u8 wkp_calib_values_tx_iq_skew[] = { 0x01, 0x00, 0x00, 0x00 }; -static const u8 wkp_calib_values_xtal[] = { 0xd2, 0xd2 }; struct iwl_calib_default_data { u16 size; @@ -99,12 +90,7 @@ struct iwl_calib_default_data { #define CALIB_SIZE_N_DATA(_buf) {.size = sizeof(_buf), .data = &_buf} static const struct iwl_calib_default_data wkp_calib_default_data[12] = { - [5] = CALIB_SIZE_N_DATA(wkp_calib_values_rx_dc), - [6] = CALIB_SIZE_N_DATA(wkp_calib_values_bb_filter), - [7] = CALIB_SIZE_N_DATA(wkp_calib_values_tx_lo), - [8] = CALIB_SIZE_N_DATA(wkp_calib_values_tx_iq), [9] = CALIB_SIZE_N_DATA(wkp_calib_values_tx_iq_skew), - [10] = CALIB_SIZE_N_DATA(wkp_calib_values_rx_iq), [11] = CALIB_SIZE_N_DATA(wkp_calib_values_rx_iq_skew), }; @@ -261,103 +247,6 @@ static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm) sizeof(phy_cfg_cmd), &phy_cfg_cmd); } -/* Starting with the new PHY DB implementation - New calibs are enabled */ -/* Value - 0x405e7 */ -#define IWL_CALIB_DEFAULT_FLOW_INIT (IWL_CALIB_CFG_XTAL_IDX |\ - IWL_CALIB_CFG_TEMPERATURE_IDX |\ - IWL_CALIB_CFG_VOLTAGE_READ_IDX |\ - IWL_CALIB_CFG_DC_IDX |\ - IWL_CALIB_CFG_BB_FILTER_IDX |\ - IWL_CALIB_CFG_LO_LEAKAGE_IDX |\ - IWL_CALIB_CFG_TX_IQ_IDX |\ - IWL_CALIB_CFG_RX_IQ_IDX |\ - IWL_CALIB_CFG_AGC_IDX) - -#define IWL_CALIB_DEFAULT_EVENT_INIT 0x0 - -/* Value 0x41567 */ -#define IWL_CALIB_DEFAULT_FLOW_RUN (IWL_CALIB_CFG_XTAL_IDX |\ - IWL_CALIB_CFG_TEMPERATURE_IDX |\ - IWL_CALIB_CFG_VOLTAGE_READ_IDX |\ - IWL_CALIB_CFG_BB_FILTER_IDX |\ - IWL_CALIB_CFG_DC_IDX |\ - IWL_CALIB_CFG_TX_IQ_IDX |\ - IWL_CALIB_CFG_RX_IQ_IDX |\ - IWL_CALIB_CFG_SENSITIVITY_IDX |\ - IWL_CALIB_CFG_AGC_IDX) - -#define IWL_CALIB_DEFAULT_EVENT_RUN (IWL_CALIB_CFG_XTAL_IDX |\ - IWL_CALIB_CFG_TEMPERATURE_IDX |\ - IWL_CALIB_CFG_VOLTAGE_READ_IDX |\ - IWL_CALIB_CFG_TX_PWR_IDX |\ - IWL_CALIB_CFG_DC_IDX |\ - IWL_CALIB_CFG_TX_IQ_IDX |\ - IWL_CALIB_CFG_SENSITIVITY_IDX) - -/* - * Sets the calibrations trigger values that will be sent to the FW for runtime - * and init calibrations. - * The ones given in the FW TLV are not correct. - */ -static void iwl_set_default_calib_trigger(struct iwl_mvm *mvm) -{ - struct iwl_tlv_calib_ctrl default_calib; - - /* - * WkP FW TLV calib bits are wrong, overwrite them. - * This defines the dynamic calibrations which are implemented in the - * uCode both for init(flow) calculation and event driven calibs. - */ - - /* Init Image */ - default_calib.event_trigger = cpu_to_le32(IWL_CALIB_DEFAULT_EVENT_INIT); - default_calib.flow_trigger = cpu_to_le32(IWL_CALIB_DEFAULT_FLOW_INIT); - - if (default_calib.event_trigger != - mvm->fw->default_calib[IWL_UCODE_INIT].event_trigger) - IWL_ERR(mvm, - "Updating the event calib for INIT image: 0x%x -> 0x%x\n", - mvm->fw->default_calib[IWL_UCODE_INIT].event_trigger, - default_calib.event_trigger); - if (default_calib.flow_trigger != - mvm->fw->default_calib[IWL_UCODE_INIT].flow_trigger) - IWL_ERR(mvm, - "Updating the flow calib for INIT image: 0x%x -> 0x%x\n", - mvm->fw->default_calib[IWL_UCODE_INIT].flow_trigger, - default_calib.flow_trigger); - - memcpy((void *)&mvm->fw->default_calib[IWL_UCODE_INIT], - &default_calib, sizeof(struct iwl_tlv_calib_ctrl)); - IWL_ERR(mvm, - "Setting uCode init calibrations event 0x%x, trigger 0x%x\n", - default_calib.event_trigger, - default_calib.flow_trigger); - - /* Run time image */ - default_calib.event_trigger = cpu_to_le32(IWL_CALIB_DEFAULT_EVENT_RUN); - default_calib.flow_trigger = cpu_to_le32(IWL_CALIB_DEFAULT_FLOW_RUN); - - if (default_calib.event_trigger != - mvm->fw->default_calib[IWL_UCODE_REGULAR].event_trigger) - IWL_ERR(mvm, - "Updating the event calib for RT image: 0x%x -> 0x%x\n", - mvm->fw->default_calib[IWL_UCODE_REGULAR].event_trigger, - default_calib.event_trigger); - if (default_calib.flow_trigger != - mvm->fw->default_calib[IWL_UCODE_REGULAR].flow_trigger) - IWL_ERR(mvm, - "Updating the flow calib for RT image: 0x%x -> 0x%x\n", - mvm->fw->default_calib[IWL_UCODE_REGULAR].flow_trigger, - default_calib.flow_trigger); - - memcpy((void *)&mvm->fw->default_calib[IWL_UCODE_REGULAR], - &default_calib, sizeof(struct iwl_tlv_calib_ctrl)); - IWL_ERR(mvm, - "Setting uCode runtime calibs event 0x%x, trigger 0x%x\n", - default_calib.event_trigger, - default_calib.flow_trigger); -} - static int iwl_set_default_calibrations(struct iwl_mvm *mvm) { u8 cmd_raw[16]; /* holds the variable size commands */ @@ -437,9 +326,6 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm) if (ret) goto error; - /* Override the calibrations from TLV and the const of fw */ - iwl_set_default_calib_trigger(mvm); - /* WkP doesn't have all calibrations, need to set default values */ if (mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000) { ret = iwl_set_default_calibrations(mvm); -- cgit v1.1 From f9aa8dd33714f17c7229ad89309406a1ccb3cd3f Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Mon, 4 Mar 2013 09:11:08 +0200 Subject: iwlwifi: mvm: ignore STOP_AGG when restarting Since the device is being restarted, all the Rx / Tx Block Ack sessions are been wiped out by the driver. So ignore the requests from mac80211 that stops Tx agg while reconfiguring the device. Note that stopping a non-existing Rx BA session is harmless, so just honor mac80211's request. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/sta.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/wireless/iwlwifi/mvm/sta.c b/drivers/net/wireless/iwlwifi/mvm/sta.c index 861a7f9..274f44e 100644 --- a/drivers/net/wireless/iwlwifi/mvm/sta.c +++ b/drivers/net/wireless/iwlwifi/mvm/sta.c @@ -770,6 +770,16 @@ int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif, u16 txq_id; int err; + + /* + * If mac80211 is cleaning its state, then say that we finished since + * our state has been cleared anyway. + */ + if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) { + ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); + return 0; + } + spin_lock_bh(&mvmsta->lock); txq_id = tid_data->txq_id; -- cgit v1.1 From 8101a7f0656bf11c385d6e14f52313b19f017e70 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 28 Feb 2013 11:54:28 +0200 Subject: iwlwifi: mvm: update the rssi calculation Make the rssi more accurate by taking in count per-chain AGC values. Without this, the RSSI reports inaccurate values. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/fw-api.h | 18 ++++++++------- drivers/net/wireless/iwlwifi/mvm/mvm.h | 3 ++- drivers/net/wireless/iwlwifi/mvm/rx.c | 37 +++++++++++++++++++------------ 3 files changed, 35 insertions(+), 23 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/iwlwifi/mvm/fw-api.h index 23eebda..2adb61f 100644 --- a/drivers/net/wireless/iwlwifi/mvm/fw-api.h +++ b/drivers/net/wireless/iwlwifi/mvm/fw-api.h @@ -762,18 +762,20 @@ struct iwl_phy_context_cmd { #define IWL_RX_INFO_PHY_CNT 8 #define IWL_RX_INFO_AGC_IDX 1 #define IWL_RX_INFO_RSSI_AB_IDX 2 -#define IWL_RX_INFO_RSSI_C_IDX 3 -#define IWL_OFDM_AGC_DB_MSK 0xfe00 -#define IWL_OFDM_AGC_DB_POS 9 +#define IWL_OFDM_AGC_A_MSK 0x0000007f +#define IWL_OFDM_AGC_A_POS 0 +#define IWL_OFDM_AGC_B_MSK 0x00003f80 +#define IWL_OFDM_AGC_B_POS 7 +#define IWL_OFDM_AGC_CODE_MSK 0x3fe00000 +#define IWL_OFDM_AGC_CODE_POS 20 #define IWL_OFDM_RSSI_INBAND_A_MSK 0x00ff -#define IWL_OFDM_RSSI_ALLBAND_A_MSK 0xff00 #define IWL_OFDM_RSSI_A_POS 0 +#define IWL_OFDM_RSSI_ALLBAND_A_MSK 0xff00 +#define IWL_OFDM_RSSI_ALLBAND_A_POS 8 #define IWL_OFDM_RSSI_INBAND_B_MSK 0xff0000 -#define IWL_OFDM_RSSI_ALLBAND_B_MSK 0xff000000 #define IWL_OFDM_RSSI_B_POS 16 -#define IWL_OFDM_RSSI_INBAND_C_MSK 0x00ff -#define IWL_OFDM_RSSI_ALLBAND_C_MSK 0xff00 -#define IWL_OFDM_RSSI_C_POS 0 +#define IWL_OFDM_RSSI_ALLBAND_B_MSK 0xff000000 +#define IWL_OFDM_RSSI_ALLBAND_B_POS 24 /** * struct iwl_rx_phy_info - phy info diff --git a/drivers/net/wireless/iwlwifi/mvm/mvm.h b/drivers/net/wireless/iwlwifi/mvm/mvm.h index 537711b..bdae700 100644 --- a/drivers/net/wireless/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/iwlwifi/mvm/mvm.h @@ -80,7 +80,8 @@ #define IWL_INVALID_MAC80211_QUEUE 0xff #define IWL_MVM_MAX_ADDRESSES 2 -#define IWL_RSSI_OFFSET 44 +/* RSSI offset for WkP */ +#define IWL_RSSI_OFFSET 50 enum iwl_mvm_tx_fifo { IWL_MVM_TX_FIFO_BK = 0, diff --git a/drivers/net/wireless/iwlwifi/mvm/rx.c b/drivers/net/wireless/iwlwifi/mvm/rx.c index 3f40ab0..b0b190d 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/iwlwifi/mvm/rx.c @@ -131,33 +131,42 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, static int iwl_mvm_calc_rssi(struct iwl_mvm *mvm, struct iwl_rx_phy_info *phy_info) { - u32 rssi_a, rssi_b, rssi_c, max_rssi, agc_db; + int rssi_a, rssi_b, rssi_a_dbm, rssi_b_dbm, max_rssi_dbm; + int rssi_all_band_a, rssi_all_band_b; + u32 agc_a, agc_b, max_agc; u32 val; - /* Find max rssi among 3 possible receivers. + /* Find max rssi among 2 possible receivers. * These values are measured by the Digital Signal Processor (DSP). * They should stay fairly constant even as the signal strength varies, * if the radio's Automatic Gain Control (AGC) is working right. * AGC value (see below) will provide the "interesting" info. */ + val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_AGC_IDX]); + agc_a = (val & IWL_OFDM_AGC_A_MSK) >> IWL_OFDM_AGC_A_POS; + agc_b = (val & IWL_OFDM_AGC_B_MSK) >> IWL_OFDM_AGC_B_POS; + max_agc = max_t(u32, agc_a, agc_b); + val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_RSSI_AB_IDX]); rssi_a = (val & IWL_OFDM_RSSI_INBAND_A_MSK) >> IWL_OFDM_RSSI_A_POS; rssi_b = (val & IWL_OFDM_RSSI_INBAND_B_MSK) >> IWL_OFDM_RSSI_B_POS; - val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_RSSI_C_IDX]); - rssi_c = (val & IWL_OFDM_RSSI_INBAND_C_MSK) >> IWL_OFDM_RSSI_C_POS; - - val = le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_AGC_IDX]); - agc_db = (val & IWL_OFDM_AGC_DB_MSK) >> IWL_OFDM_AGC_DB_POS; + rssi_all_band_a = (val & IWL_OFDM_RSSI_ALLBAND_A_MSK) >> + IWL_OFDM_RSSI_ALLBAND_A_POS; + rssi_all_band_b = (val & IWL_OFDM_RSSI_ALLBAND_B_MSK) >> + IWL_OFDM_RSSI_ALLBAND_B_POS; - max_rssi = max_t(u32, rssi_a, rssi_b); - max_rssi = max_t(u32, max_rssi, rssi_c); + /* + * dBm = rssi dB - agc dB - constant. + * Higher AGC (higher radio gain) means lower signal. + */ + rssi_a_dbm = rssi_a - IWL_RSSI_OFFSET - agc_a; + rssi_b_dbm = rssi_b - IWL_RSSI_OFFSET - agc_b; + max_rssi_dbm = max_t(int, rssi_a_dbm, rssi_b_dbm); - IWL_DEBUG_STATS(mvm, "Rssi In A %d B %d C %d Max %d AGC dB %d\n", - rssi_a, rssi_b, rssi_c, max_rssi, agc_db); + IWL_DEBUG_STATS(mvm, "Rssi In A %d B %d Max %d AGCA %d AGCB %d\n", + rssi_a_dbm, rssi_b_dbm, max_rssi_dbm, agc_a, agc_b); - /* dBm = max_rssi dB - agc dB - constant. - * Higher AGC (higher radio gain) means lower signal. */ - return max_rssi - agc_db - IWL_RSSI_OFFSET; + return max_rssi_dbm; } /* -- cgit v1.1 From 2470b36e84a2e680d7a7e3809cbceae5bfae3606 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Sun, 3 Mar 2013 14:35:03 +0200 Subject: iwlwifi: mvm: don't warn on normal BAR sending This flow happens when we get a failed single Tx response on an AMPDU queue. In this case, the frame won't be sent any more. So we need to move the window on the recipient side. This is done by a BAR. Now if we are in the following case: 10, 12 and 13 are ACKed and 11 isn't. 10 11 12 13. V X V V Then, 11 will be sent 16 times as an MPDU (as oppsed to A-MPDU). If this failed, we are entering the flow described above. So we need to send a BAR with ssn = 12. But in this case, the scheduler will tell us to free frames up to 13 (included). So, it is perfectly possible to get a failed single Tx response on an AMPDU queue that makes the scheduler's ssn jump by more than 1 single packet. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/mvm/tx.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/mvm/tx.c b/drivers/net/wireless/iwlwifi/mvm/tx.c index 6b67ce3..6645efe 100644 --- a/drivers/net/wireless/iwlwifi/mvm/tx.c +++ b/drivers/net/wireless/iwlwifi/mvm/tx.c @@ -607,12 +607,8 @@ static void iwl_mvm_rx_tx_cmd_single(struct iwl_mvm *mvm, /* Single frame failure in an AMPDU queue => send BAR */ if (txq_id >= IWL_FIRST_AMPDU_QUEUE && - !(info->flags & IEEE80211_TX_STAT_ACK)) { - /* there must be only one skb in the skb_list */ - WARN_ON_ONCE(skb_freed > 1 || - !skb_queue_empty(&skbs)); + !(info->flags & IEEE80211_TX_STAT_ACK)) info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK; - } /* W/A FW bug: seq_ctl is wrong when the queue is flushed */ if (status == TX_STATUS_FAIL_FIFO_FLUSHED) { -- cgit v1.1 From 091930a2e612a02debe8694b41f96e33fe45bba2 Mon Sep 17 00:00:00 2001 From: Mark Langsdorf Date: Thu, 28 Feb 2013 18:29:19 +0000 Subject: mailbox, pl320-ipc: remove __init from probe function Avoids a section mismatch. Signed-off-by: Mark Langsdorf Signed-off-by: Rafael J. Wysocki --- drivers/mailbox/pl320-ipc.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mailbox/pl320-ipc.c b/drivers/mailbox/pl320-ipc.c index c45b3ae..d873cba 100644 --- a/drivers/mailbox/pl320-ipc.c +++ b/drivers/mailbox/pl320-ipc.c @@ -138,8 +138,7 @@ int pl320_ipc_unregister_notifier(struct notifier_block *nb) } EXPORT_SYMBOL_GPL(pl320_ipc_unregister_notifier); -static int __init pl320_probe(struct amba_device *adev, - const struct amba_id *id) +static int pl320_probe(struct amba_device *adev, const struct amba_id *id) { int ret; -- cgit v1.1 From e5dde92cb2befb108ae8cfe8db68a954c164d77c Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 28 Feb 2013 05:38:00 +0000 Subject: cpufreq: Fix a typo in comment Fix a typo in a comment in cpufreq_governor.h. [rjw: Changelog] Signed-off-by: Namhyung Kim Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_governor.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index d2ac911..46bde01 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -64,7 +64,7 @@ static void *get_cpu_dbs_info_s(int cpu) \ * dbs: used as a shortform for demand based switching It helps to keep variable * names smaller, simpler * cdbs: common dbs - * on_*: On-demand governor + * od_*: On-demand governor * cs_*: Conservative governor */ -- cgit v1.1 From 4b87581036849723242cadaa161e9b01234ef9ae Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Tue, 26 Feb 2013 23:53:02 +0000 Subject: PM / OPP: improve introductory documentation Make Operating Performance Points (OPP) library introductory chapter a little more reader-friendly. Split the chapter into two sections, highlight the definition with an example and minor rewording to be verbose. Reported-by: Linus Torvalds Signed-off-by: Nishanth Menon Reviewed-by: Randy Dunlap Signed-off-by: Rafael J. Wysocki --- Documentation/power/opp.txt | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/Documentation/power/opp.txt b/Documentation/power/opp.txt index 3035d00..425c51d 100644 --- a/Documentation/power/opp.txt +++ b/Documentation/power/opp.txt @@ -1,6 +1,5 @@ -*=============* -* OPP Library * -*=============* +Operating Performance Points (OPP) Library +========================================== (C) 2009-2010 Nishanth Menon , Texas Instruments Incorporated @@ -16,15 +15,31 @@ Contents 1. Introduction =============== +1.1 What is an Operating Performance Point (OPP)? + Complex SoCs of today consists of a multiple sub-modules working in conjunction. In an operational system executing varied use cases, not all modules in the SoC need to function at their highest performing frequency all the time. To facilitate this, sub-modules in a SoC are grouped into domains, allowing some -domains to run at lower voltage and frequency while other domains are loaded -more. The set of discrete tuples consisting of frequency and voltage pairs that +domains to run at lower voltage and frequency while other domains run at +voltage/frequency pairs that are higher. + +The set of discrete tuples consisting of frequency and voltage pairs that the device will support per domain are called Operating Performance Points or OPPs. +As an example: +Let us consider an MPU device which supports the following: +{300MHz at minimum voltage of 1V}, {800MHz at minimum voltage of 1.2V}, +{1GHz at minimum voltage of 1.3V} + +We can represent these as three OPPs as the following {Hz, uV} tuples: +{300000000, 1000000} +{800000000, 1200000} +{1000000000, 1300000} + +1.2 Operating Performance Points Library + OPP library provides a set of helper functions to organize and query the OPP information. The library is located in drivers/base/power/opp.c and the header is located in include/linux/opp.h. OPP library can be enabled by enabling -- cgit v1.1 From f5f43dcfff3a3c7f7de4a0cfca0106a0ccd58bd7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Emilio=20L=C3=B3pez?= Date: Mon, 25 Feb 2013 11:07:45 +0000 Subject: cpufreq: highbank: do not initialize array with a loop MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As uninitialized array members will be initialized to zero, we can avoid using a for loop by setting a value to it. Signed-off-by: Emilio López Acked-by: Viresh Kumar Acked-By: Mark Langsdorf Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/highbank-cpufreq.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/drivers/cpufreq/highbank-cpufreq.c b/drivers/cpufreq/highbank-cpufreq.c index 66e3a71..b61b5a3 100644 --- a/drivers/cpufreq/highbank-cpufreq.c +++ b/drivers/cpufreq/highbank-cpufreq.c @@ -28,13 +28,7 @@ static int hb_voltage_change(unsigned int freq) { - int i; - u32 msg[HB_CPUFREQ_IPC_LEN]; - - msg[0] = HB_CPUFREQ_CHANGE_NOTE; - msg[1] = freq / 1000000; - for (i = 2; i < HB_CPUFREQ_IPC_LEN; i++) - msg[i] = 0; + u32 msg[HB_CPUFREQ_IPC_LEN] = {HB_CPUFREQ_CHANGE_NOTE, freq / 1000000}; return pl320_ipc_transmit(msg); } -- cgit v1.1 From b81ea1b5ac4d3c6a628158b736dd4a98c46c29d9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 3 Mar 2013 22:48:14 +0100 Subject: PM / QoS: Fix concurrency issues and memory leaks in device PM QoS The current device PM QoS code assumes that certain functions will never be called in parallel with each other (for example, it is assumed that dev_pm_qos_expose_flags() won't be called in parallel with dev_pm_qos_hide_flags() for the same device and analogously for the latency limit), which may be overly optimistic. Moreover, dev_pm_qos_expose_flags() and dev_pm_qos_expose_latency_limit() leak memory in error code paths (req needs to be freed on errors) and __dev_pm_qos_drop_user_request() forgets to free the request. To fix the above issues put more things under the device PM QoS mutex to make them mutually exclusive and add the missing freeing of memory. Signed-off-by: Rafael J. Wysocki --- drivers/base/power/qos.c | 129 ++++++++++++++++++++++++++++++++--------------- 1 file changed, 87 insertions(+), 42 deletions(-) diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 3d4d1f8..2159d62 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -344,6 +344,13 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 curr_value; int ret = 0; + if (!req) /*guard against callers passing in null */ + return -EINVAL; + + if (WARN(!dev_pm_qos_request_active(req), + "%s() called for unknown object\n", __func__)) + return -EINVAL; + if (!req->dev->power.qos) return -ENODEV; @@ -386,6 +393,17 @@ int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value) { int ret; + mutex_lock(&dev_pm_qos_mtx); + ret = __dev_pm_qos_update_request(req, new_value); + mutex_unlock(&dev_pm_qos_mtx); + return ret; +} +EXPORT_SYMBOL_GPL(dev_pm_qos_update_request); + +static int __dev_pm_qos_remove_request(struct dev_pm_qos_request *req) +{ + int ret = 0; + if (!req) /*guard against callers passing in null */ return -EINVAL; @@ -393,13 +411,15 @@ int dev_pm_qos_update_request(struct dev_pm_qos_request *req, s32 new_value) "%s() called for unknown object\n", __func__)) return -EINVAL; - mutex_lock(&dev_pm_qos_mtx); - ret = __dev_pm_qos_update_request(req, new_value); - mutex_unlock(&dev_pm_qos_mtx); - + if (req->dev->power.qos) { + ret = apply_constraint(req, PM_QOS_REMOVE_REQ, + PM_QOS_DEFAULT_VALUE); + memset(req, 0, sizeof(*req)); + } else { + ret = -ENODEV; + } return ret; } -EXPORT_SYMBOL_GPL(dev_pm_qos_update_request); /** * dev_pm_qos_remove_request - modifies an existing qos request @@ -418,26 +438,10 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_update_request); */ int dev_pm_qos_remove_request(struct dev_pm_qos_request *req) { - int ret = 0; - - if (!req) /*guard against callers passing in null */ - return -EINVAL; - - if (WARN(!dev_pm_qos_request_active(req), - "%s() called for unknown object\n", __func__)) - return -EINVAL; + int ret; mutex_lock(&dev_pm_qos_mtx); - - if (req->dev->power.qos) { - ret = apply_constraint(req, PM_QOS_REMOVE_REQ, - PM_QOS_DEFAULT_VALUE); - memset(req, 0, sizeof(*req)); - } else { - /* Return if the device has been removed */ - ret = -ENODEV; - } - + ret = __dev_pm_qos_remove_request(req); mutex_unlock(&dev_pm_qos_mtx); return ret; } @@ -563,16 +567,20 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_add_ancestor_request); static void __dev_pm_qos_drop_user_request(struct device *dev, enum dev_pm_qos_req_type type) { + struct dev_pm_qos_request *req = NULL; + switch(type) { case DEV_PM_QOS_LATENCY: - dev_pm_qos_remove_request(dev->power.qos->latency_req); + req = dev->power.qos->latency_req; dev->power.qos->latency_req = NULL; break; case DEV_PM_QOS_FLAGS: - dev_pm_qos_remove_request(dev->power.qos->flags_req); + req = dev->power.qos->flags_req; dev->power.qos->flags_req = NULL; break; } + __dev_pm_qos_remove_request(req); + kfree(req); } /** @@ -588,22 +596,36 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (!device_is_registered(dev) || value < 0) return -EINVAL; - if (dev->power.qos && dev->power.qos->latency_req) - return -EEXIST; - req = kzalloc(sizeof(*req), GFP_KERNEL); if (!req) return -ENOMEM; ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_LATENCY, value); - if (ret < 0) + if (ret < 0) { + kfree(req); return ret; + } + + mutex_lock(&dev_pm_qos_mtx); + + if (!dev->power.qos) + ret = -ENODEV; + else if (dev->power.qos->latency_req) + ret = -EEXIST; + + if (ret < 0) { + __dev_pm_qos_remove_request(req); + kfree(req); + goto out; + } dev->power.qos->latency_req = req; ret = pm_qos_sysfs_add_latency(dev); if (ret) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + out: + mutex_unlock(&dev_pm_qos_mtx); return ret; } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); @@ -614,10 +636,14 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); */ void dev_pm_qos_hide_latency_limit(struct device *dev) { + mutex_lock(&dev_pm_qos_mtx); + if (dev->power.qos && dev->power.qos->latency_req) { pm_qos_sysfs_remove_latency(dev); __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); } + + mutex_unlock(&dev_pm_qos_mtx); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_limit); @@ -634,24 +660,37 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) if (!device_is_registered(dev)) return -EINVAL; - if (dev->power.qos && dev->power.qos->flags_req) - return -EEXIST; - req = kzalloc(sizeof(*req), GFP_KERNEL); if (!req) return -ENOMEM; - pm_runtime_get_sync(dev); ret = dev_pm_qos_add_request(dev, req, DEV_PM_QOS_FLAGS, val); - if (ret < 0) - goto fail; + if (ret < 0) { + kfree(req); + return ret; + } + + pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_mtx); + + if (!dev->power.qos) + ret = -ENODEV; + else if (dev->power.qos->flags_req) + ret = -EEXIST; + + if (ret < 0) { + __dev_pm_qos_remove_request(req); + kfree(req); + goto out; + } dev->power.qos->flags_req = req; ret = pm_qos_sysfs_add_flags(dev); if (ret) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); -fail: + out: + mutex_unlock(&dev_pm_qos_mtx); pm_runtime_put(dev); return ret; } @@ -663,12 +702,16 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_flags); */ void dev_pm_qos_hide_flags(struct device *dev) { + pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_mtx); + if (dev->power.qos && dev->power.qos->flags_req) { pm_qos_sysfs_remove_flags(dev); - pm_runtime_get_sync(dev); __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); - pm_runtime_put(dev); } + + mutex_unlock(&dev_pm_qos_mtx); + pm_runtime_put(dev); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_flags); @@ -683,12 +726,14 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set) s32 value; int ret; - if (!dev->power.qos || !dev->power.qos->flags_req) - return -EINVAL; - pm_runtime_get_sync(dev); mutex_lock(&dev_pm_qos_mtx); + if (!dev->power.qos || !dev->power.qos->flags_req) { + ret = -EINVAL; + goto out; + } + value = dev_pm_qos_requested_flags(dev); if (set) value |= mask; @@ -697,9 +742,9 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set) ret = __dev_pm_qos_update_request(dev->power.qos->flags_req, value); + out: mutex_unlock(&dev_pm_qos_mtx); pm_runtime_put(dev); - return ret; } #endif /* CONFIG_PM_RUNTIME */ -- cgit v1.1 From 37530f2bda039774bd65aea14cc1d1dd26a82b9e Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 4 Mar 2013 14:22:57 +0100 Subject: PM / QoS: Remove device PM QoS sysfs attributes at the right place Device PM QoS sysfs attributes, if present during device removal, are removed from within device_pm_remove(), which is too late, since dpm_sysfs_remove() has already removed the whole attribute group they belonged to. However, moving the removal of those attributes to dpm_sysfs_remove() alone is not sufficient, because in theory they still can be re-added right after being removed by it (the device's driver is still bound to it at that point). For this reason, move the entire desctruction of device PM QoS constraints to dpm_sysfs_remove() and make it prevent any new constraints from being added after it has run. Also, move the initialization of the power.qos field in struct device to device_pm_init_common() and drop the no longer needed dev_pm_qos_constraints_init(). Reported-by: Sasha Levin Signed-off-by: Rafael J. Wysocki --- drivers/base/power/main.c | 2 - drivers/base/power/power.h | 8 +-- drivers/base/power/qos.c | 120 ++++++++++++++++++++------------------------- drivers/base/power/sysfs.c | 1 + 4 files changed, 55 insertions(+), 76 deletions(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 2b7f77d..15beb50 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -99,7 +99,6 @@ void device_pm_add(struct device *dev) dev_warn(dev, "parent %s should not be sleeping\n", dev_name(dev->parent)); list_add_tail(&dev->power.entry, &dpm_list); - dev_pm_qos_constraints_init(dev); mutex_unlock(&dpm_list_mtx); } @@ -113,7 +112,6 @@ void device_pm_remove(struct device *dev) dev->bus ? dev->bus->name : "No Bus", dev_name(dev)); complete_all(&dev->power.completion); mutex_lock(&dpm_list_mtx); - dev_pm_qos_constraints_destroy(dev); list_del_init(&dev->power.entry); mutex_unlock(&dpm_list_mtx); device_wakeup_disable(dev); diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index b16686a..cfc3226 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -4,7 +4,7 @@ static inline void device_pm_init_common(struct device *dev) { if (!dev->power.early_init) { spin_lock_init(&dev->power.lock); - dev->power.power_state = PMSG_INVALID; + dev->power.qos = NULL; dev->power.early_init = true; } } @@ -56,14 +56,10 @@ extern void device_pm_move_last(struct device *); static inline void device_pm_sleep_init(struct device *dev) {} -static inline void device_pm_add(struct device *dev) -{ - dev_pm_qos_constraints_init(dev); -} +static inline void device_pm_add(struct device *dev) {} static inline void device_pm_remove(struct device *dev) { - dev_pm_qos_constraints_destroy(dev); pm_runtime_remove(dev); } diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 2159d62..5f74587e 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -41,6 +41,7 @@ #include #include #include +#include #include "power.h" @@ -61,7 +62,7 @@ enum pm_qos_flags_status __dev_pm_qos_flags(struct device *dev, s32 mask) struct pm_qos_flags *pqf; s32 val; - if (!qos) + if (IS_ERR_OR_NULL(qos)) return PM_QOS_FLAGS_UNDEFINED; pqf = &qos->flags; @@ -101,7 +102,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_flags); */ s32 __dev_pm_qos_read_value(struct device *dev) { - return dev->power.qos ? pm_qos_read_value(&dev->power.qos->latency) : 0; + return IS_ERR_OR_NULL(dev->power.qos) ? + 0 : pm_qos_read_value(&dev->power.qos->latency); } /** @@ -198,20 +200,8 @@ static int dev_pm_qos_constraints_allocate(struct device *dev) return 0; } -/** - * dev_pm_qos_constraints_init - Initalize device's PM QoS constraints pointer. - * @dev: target device - * - * Called from the device PM subsystem during device insertion under - * device_pm_lock(). - */ -void dev_pm_qos_constraints_init(struct device *dev) -{ - mutex_lock(&dev_pm_qos_mtx); - dev->power.qos = NULL; - dev->power.power_state = PMSG_ON; - mutex_unlock(&dev_pm_qos_mtx); -} +static void __dev_pm_qos_hide_latency_limit(struct device *dev); +static void __dev_pm_qos_hide_flags(struct device *dev); /** * dev_pm_qos_constraints_destroy @@ -226,16 +216,15 @@ void dev_pm_qos_constraints_destroy(struct device *dev) struct pm_qos_constraints *c; struct pm_qos_flags *f; + mutex_lock(&dev_pm_qos_mtx); + /* * If the device's PM QoS resume latency limit or PM QoS flags have been * exposed to user space, they have to be hidden at this point. */ - dev_pm_qos_hide_latency_limit(dev); - dev_pm_qos_hide_flags(dev); - - mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_hide_latency_limit(dev); + __dev_pm_qos_hide_flags(dev); - dev->power.power_state = PMSG_INVALID; qos = dev->power.qos; if (!qos) goto out; @@ -257,7 +246,7 @@ void dev_pm_qos_constraints_destroy(struct device *dev) } spin_lock_irq(&dev->power.lock); - dev->power.qos = NULL; + dev->power.qos = ERR_PTR(-ENODEV); spin_unlock_irq(&dev->power.lock); kfree(c->notifiers); @@ -301,32 +290,19 @@ int dev_pm_qos_add_request(struct device *dev, struct dev_pm_qos_request *req, "%s() called for already added request\n", __func__)) return -EINVAL; - req->dev = dev; - mutex_lock(&dev_pm_qos_mtx); - if (!dev->power.qos) { - if (dev->power.power_state.event == PM_EVENT_INVALID) { - /* The device has been removed from the system. */ - req->dev = NULL; - ret = -ENODEV; - goto out; - } else { - /* - * Allocate the constraints data on the first call to - * add_request, i.e. only if the data is not already - * allocated and if the device has not been removed. - */ - ret = dev_pm_qos_constraints_allocate(dev); - } - } + if (IS_ERR(dev->power.qos)) + ret = -ENODEV; + else if (!dev->power.qos) + ret = dev_pm_qos_constraints_allocate(dev); if (!ret) { + req->dev = dev; req->type = type; ret = apply_constraint(req, PM_QOS_ADD_REQ, value); } - out: mutex_unlock(&dev_pm_qos_mtx); return ret; @@ -351,7 +327,7 @@ static int __dev_pm_qos_update_request(struct dev_pm_qos_request *req, "%s() called for unknown object\n", __func__)) return -EINVAL; - if (!req->dev->power.qos) + if (IS_ERR_OR_NULL(req->dev->power.qos)) return -ENODEV; switch(req->type) { @@ -402,7 +378,7 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_update_request); static int __dev_pm_qos_remove_request(struct dev_pm_qos_request *req) { - int ret = 0; + int ret; if (!req) /*guard against callers passing in null */ return -EINVAL; @@ -411,13 +387,11 @@ static int __dev_pm_qos_remove_request(struct dev_pm_qos_request *req) "%s() called for unknown object\n", __func__)) return -EINVAL; - if (req->dev->power.qos) { - ret = apply_constraint(req, PM_QOS_REMOVE_REQ, - PM_QOS_DEFAULT_VALUE); - memset(req, 0, sizeof(*req)); - } else { - ret = -ENODEV; - } + if (IS_ERR_OR_NULL(req->dev->power.qos)) + return -ENODEV; + + ret = apply_constraint(req, PM_QOS_REMOVE_REQ, PM_QOS_DEFAULT_VALUE); + memset(req, 0, sizeof(*req)); return ret; } @@ -466,9 +440,10 @@ int dev_pm_qos_add_notifier(struct device *dev, struct notifier_block *notifier) mutex_lock(&dev_pm_qos_mtx); - if (!dev->power.qos) - ret = dev->power.power_state.event != PM_EVENT_INVALID ? - dev_pm_qos_constraints_allocate(dev) : -ENODEV; + if (IS_ERR(dev->power.qos)) + ret = -ENODEV; + else if (!dev->power.qos) + ret = dev_pm_qos_constraints_allocate(dev); if (!ret) ret = blocking_notifier_chain_register( @@ -497,7 +472,7 @@ int dev_pm_qos_remove_notifier(struct device *dev, mutex_lock(&dev_pm_qos_mtx); /* Silently return if the constraints object is not present. */ - if (dev->power.qos) + if (!IS_ERR_OR_NULL(dev->power.qos)) retval = blocking_notifier_chain_unregister( dev->power.qos->latency.notifiers, notifier); @@ -608,7 +583,7 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) mutex_lock(&dev_pm_qos_mtx); - if (!dev->power.qos) + if (IS_ERR_OR_NULL(dev->power.qos)) ret = -ENODEV; else if (dev->power.qos->latency_req) ret = -EEXIST; @@ -630,6 +605,14 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); +static void __dev_pm_qos_hide_latency_limit(struct device *dev) +{ + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) { + pm_qos_sysfs_remove_latency(dev); + __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + } +} + /** * dev_pm_qos_hide_latency_limit - Hide PM QoS latency limit from user space. * @dev: Device whose PM QoS latency limit is to be hidden from user space. @@ -637,12 +620,7 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); void dev_pm_qos_hide_latency_limit(struct device *dev) { mutex_lock(&dev_pm_qos_mtx); - - if (dev->power.qos && dev->power.qos->latency_req) { - pm_qos_sysfs_remove_latency(dev); - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); - } - + __dev_pm_qos_hide_latency_limit(dev); mutex_unlock(&dev_pm_qos_mtx); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_limit); @@ -673,7 +651,7 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) pm_runtime_get_sync(dev); mutex_lock(&dev_pm_qos_mtx); - if (!dev->power.qos) + if (IS_ERR_OR_NULL(dev->power.qos)) ret = -ENODEV; else if (dev->power.qos->flags_req) ret = -EEXIST; @@ -696,6 +674,14 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_flags); +static void __dev_pm_qos_hide_flags(struct device *dev) +{ + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) { + pm_qos_sysfs_remove_flags(dev); + __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); + } +} + /** * dev_pm_qos_hide_flags - Hide PM QoS flags of a device from user space. * @dev: Device whose PM QoS flags are to be hidden from user space. @@ -704,12 +690,7 @@ void dev_pm_qos_hide_flags(struct device *dev) { pm_runtime_get_sync(dev); mutex_lock(&dev_pm_qos_mtx); - - if (dev->power.qos && dev->power.qos->flags_req) { - pm_qos_sysfs_remove_flags(dev); - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); - } - + __dev_pm_qos_hide_flags(dev); mutex_unlock(&dev_pm_qos_mtx); pm_runtime_put(dev); } @@ -729,7 +710,7 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set) pm_runtime_get_sync(dev); mutex_lock(&dev_pm_qos_mtx); - if (!dev->power.qos || !dev->power.qos->flags_req) { + if (IS_ERR_OR_NULL(dev->power.qos) || !dev->power.qos->flags_req) { ret = -EINVAL; goto out; } @@ -747,4 +728,7 @@ int dev_pm_qos_update_flags(struct device *dev, s32 mask, bool set) pm_runtime_put(dev); return ret; } +#else /* !CONFIG_PM_RUNTIME */ +static void __dev_pm_qos_hide_latency_limit(struct device *dev) {} +static void __dev_pm_qos_hide_flags(struct device *dev) {} #endif /* CONFIG_PM_RUNTIME */ diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index 50d16e3..a53ebd2 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -708,6 +708,7 @@ void rpm_sysfs_remove(struct device *dev) void dpm_sysfs_remove(struct device *dev) { + dev_pm_qos_constraints_destroy(dev); rpm_sysfs_remove(dev); sysfs_unmerge_group(&dev->kobj, &pm_wakeup_attr_group); sysfs_remove_group(&dev->kobj, &pm_attr_group); -- cgit v1.1 From ed4cf5b23f9d21c441e5c8feead86f2e4a436923 Mon Sep 17 00:00:00 2001 From: Joe Perches Date: Fri, 22 Feb 2013 07:37:36 +0000 Subject: ACPI / Sleep: Avoid interleaved message on errors Got this dmesg log on an Acer Aspire 725. [ 0.256351] ACPI: (supports S0ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S1_] (20130117/hwxface-568) [ 0.256373] ACPI Exception: AE_NOT_FOUND, While evaluating Sleep State [\_S2_] (20130117/hwxface-568) [ 0.256391] S3 S4 S5) Avoid this interleaving error messages. Signed-off-by: Joe Perches Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sleep.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 6d3a06a..2421303 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -599,7 +599,6 @@ static void acpi_sleep_suspend_setup(void) status = acpi_get_sleep_type_data(i, &type_a, &type_b); if (ACPI_SUCCESS(status)) { sleep_states[i] = 1; - pr_cont(" S%d", i); } } @@ -742,7 +741,6 @@ static void acpi_sleep_hibernate_setup(void) hibernation_set_ops(old_suspend_ordering ? &acpi_hibernation_ops_old : &acpi_hibernation_ops); sleep_states[ACPI_STATE_S4] = 1; - pr_cont(KERN_CONT " S4"); if (nosigcheck) return; @@ -788,6 +786,9 @@ int __init acpi_sleep_init(void) { acpi_status status; u8 type_a, type_b; + char supported[ACPI_S_STATE_COUNT * 3 + 1]; + char *pos = supported; + int i; if (acpi_disabled) return 0; @@ -795,7 +796,6 @@ int __init acpi_sleep_init(void) acpi_sleep_dmi_check(); sleep_states[ACPI_STATE_S0] = 1; - pr_info(PREFIX "(supports S0"); acpi_sleep_suspend_setup(); acpi_sleep_hibernate_setup(); @@ -803,11 +803,17 @@ int __init acpi_sleep_init(void) status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b); if (ACPI_SUCCESS(status)) { sleep_states[ACPI_STATE_S5] = 1; - pr_cont(" S5"); pm_power_off_prepare = acpi_power_off_prepare; pm_power_off = acpi_power_off; } - pr_cont(")\n"); + + supported[0] = 0; + for (i = 0; i < ACPI_S_STATE_COUNT; i++) { + if (sleep_states[i]) + pos += sprintf(pos, " S%d", i); + } + pr_info(PREFIX "(supports%s)\n", supported); + /* * Register the tts_notifier to reboot notifier list so that the _TTS * object can also be evaluated when the system enters S5. -- cgit v1.1 From 5273a258373a84bbbcbccabb356de5b68e2b8931 Mon Sep 17 00:00:00 2001 From: Syam Sidhardhan Date: Sun, 24 Feb 2013 23:12:53 +0000 Subject: ACPI / processor: Remove redundant NULL check before kfree kfree() on a NULL pointer is a no-op, so remove a redundant NULL pointer check in map_mat_entry(). [rjw: Changelog] Signed-off-by: Syam Sidhardhan Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index eff7222..164d495 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -158,8 +158,7 @@ static int map_mat_entry(acpi_handle handle, int type, u32 acpi_id) } exit: - if (buffer.pointer) - kfree(buffer.pointer); + kfree(buffer.pointer); return apic_id; } -- cgit v1.1 From 9b27516fcd7ab7dc416edf418446c24c61729938 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Wed, 27 Feb 2013 04:27:30 +0000 Subject: ACPI / porocessor: Beautify code, pr->id is u32 which is never < 0 pr->id is u32 which never < 0, so remove the redundant pr->id < 0 check from acpi_processor_add(). [rjw: Changelog] Signed-off-by: Chen Gang Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c index df34bd0..bec717f 100644 --- a/drivers/acpi/processor_driver.c +++ b/drivers/acpi/processor_driver.c @@ -559,7 +559,7 @@ static int __cpuinit acpi_processor_add(struct acpi_device *device) return 0; #endif - BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0)); + BUG_ON(pr->id >= nr_cpu_ids); /* * Buggy BIOS check -- cgit v1.1 From 53540098b23c3884b4a0b4f220b9d977bc496af3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 3 Mar 2013 22:35:20 +0100 Subject: ACPI / glue: Add .match() callback to struct acpi_bus_type USB uses the .find_bridge() callback from struct acpi_bus_type incorrectly, because as a result of the way it is used by USB every device in the system that doesn't have a bus type or parent is passed to usb_acpi_find_device() for inspection. What USB actually needs, though, is to call usb_acpi_find_device() for USB ports that don't have a bus type defined, but have usb_port_device_type as their device type, as well as for USB devices. To fix that replace the struct bus_type pointer in struct acpi_bus_type used for matching devices to specific subsystems with a .match() callback to be used for this purpose and update the users of struct acpi_bus_type, including USB, accordingly. Define the .match() callback routine for USB, usb_acpi_bus_match(), in such a way that it will cover both USB devices and USB ports and remove the now redundant .find_bridge() callback pointer from usb_acpi_bus. Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman Acked-by: Yinghai Lu Acked-by: Jeff Garzik --- drivers/acpi/glue.c | 39 +++++++++++++-------------------------- drivers/ata/libata-acpi.c | 1 + drivers/pci/pci-acpi.c | 8 +++++++- drivers/pnp/pnpacpi/core.c | 8 +++++++- drivers/scsi/scsi_lib.c | 7 ++++++- drivers/usb/core/usb-acpi.c | 9 +++++++-- include/acpi/acpi_bus.h | 3 ++- 7 files changed, 43 insertions(+), 32 deletions(-) diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index ef6f155..b94d147 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -36,12 +36,11 @@ int register_acpi_bus_type(struct acpi_bus_type *type) { if (acpi_disabled) return -ENODEV; - if (type && type->bus && type->find_device) { + if (type && type->match && type->find_device) { down_write(&bus_type_sem); list_add_tail(&type->list, &bus_type_list); up_write(&bus_type_sem); - printk(KERN_INFO PREFIX "bus type %s registered\n", - type->bus->name); + printk(KERN_INFO PREFIX "bus type %s registered\n", type->name); return 0; } return -ENODEV; @@ -56,24 +55,21 @@ int unregister_acpi_bus_type(struct acpi_bus_type *type) down_write(&bus_type_sem); list_del_init(&type->list); up_write(&bus_type_sem); - printk(KERN_INFO PREFIX "ACPI bus type %s unregistered\n", - type->bus->name); + printk(KERN_INFO PREFIX "bus type %s unregistered\n", + type->name); return 0; } return -ENODEV; } EXPORT_SYMBOL_GPL(unregister_acpi_bus_type); -static struct acpi_bus_type *acpi_get_bus_type(struct bus_type *type) +static struct acpi_bus_type *acpi_get_bus_type(struct device *dev) { struct acpi_bus_type *tmp, *ret = NULL; - if (!type) - return NULL; - down_read(&bus_type_sem); list_for_each_entry(tmp, &bus_type_list, list) { - if (tmp->bus == type) { + if (tmp->match(dev)) { ret = tmp; break; } @@ -261,26 +257,17 @@ err: static int acpi_platform_notify(struct device *dev) { - struct acpi_bus_type *type; + struct acpi_bus_type *type = acpi_get_bus_type(dev); acpi_handle handle; int ret; ret = acpi_bind_one(dev, NULL); - if (ret && (!dev->bus || !dev->parent)) { - /* bridge devices genernally haven't bus or parent */ - ret = acpi_find_bridge_device(dev, &handle); - if (!ret) { - ret = acpi_bind_one(dev, handle); - if (ret) - goto out; - } - } - - type = acpi_get_bus_type(dev->bus); if (ret) { - if (!type || !type->find_device) { - DBG("No ACPI bus support for %s\n", dev_name(dev)); - ret = -EINVAL; + if (!type) { + ret = acpi_find_bridge_device(dev, &handle); + if (!ret) + ret = acpi_bind_one(dev, handle); + goto out; } @@ -316,7 +303,7 @@ static int acpi_platform_notify_remove(struct device *dev) { struct acpi_bus_type *type; - type = acpi_get_bus_type(dev->bus); + type = acpi_get_bus_type(dev); if (type && type->cleanup) type->cleanup(dev); diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 0ea1018..c832a5c 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -1150,6 +1150,7 @@ static int ata_acpi_find_dummy(struct device *dev, acpi_handle *handle) } static struct acpi_bus_type ata_acpi_bus = { + .name = "ATA", .find_bridge = ata_acpi_find_dummy, .find_device = ata_acpi_find_device, }; diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 39c937f..dee5ddd 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -331,8 +331,14 @@ static void pci_acpi_cleanup(struct device *dev) } } +static bool pci_acpi_bus_match(struct device *dev) +{ + return dev->bus == &pci_bus_type; +} + static struct acpi_bus_type acpi_pci_bus = { - .bus = &pci_bus_type, + .name = "PCI", + .match = pci_acpi_bus_match, .find_device = acpi_pci_find_device, .setup = pci_acpi_setup, .cleanup = pci_acpi_cleanup, diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index 8813fc0..55cd459 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -353,8 +353,14 @@ static int __init acpi_pnp_find_device(struct device *dev, acpi_handle * handle) /* complete initialization of a PNPACPI device includes having * pnpdev->dev.archdata.acpi_handle point to its ACPI sibling. */ +static bool acpi_pnp_bus_match(struct device *dev) +{ + return dev->bus == &pnp_bus_type; +} + static struct acpi_bus_type __initdata acpi_pnp_bus = { - .bus = &pnp_bus_type, + .name = "PNP", + .match = acpi_pnp_bus_match, .find_device = acpi_pnp_find_device, }; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 765398c..c31187d 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -71,9 +71,14 @@ struct kmem_cache *scsi_sdb_cache; #ifdef CONFIG_ACPI #include +static bool acpi_scsi_bus_match(struct device *dev) +{ + return dev->bus == &scsi_bus_type; +} + int scsi_register_acpi_bus_type(struct acpi_bus_type *bus) { - bus->bus = &scsi_bus_type; + bus->match = acpi_scsi_bus_match; return register_acpi_bus_type(bus); } EXPORT_SYMBOL_GPL(scsi_register_acpi_bus_type); diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index cef4252..b6f4bad 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -210,9 +210,14 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle) return 0; } +static bool usb_acpi_bus_match(struct device *dev) +{ + return is_usb_device(dev) || is_usb_port(dev); +} + static struct acpi_bus_type usb_acpi_bus = { - .bus = &usb_bus_type, - .find_bridge = usb_acpi_find_device, + .name = "USB", + .match = usb_acpi_bus_match, .find_device = usb_acpi_find_device, }; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e65278f..c751d7d 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -437,7 +437,8 @@ void acpi_remove_dir(struct acpi_device *); */ struct acpi_bus_type { struct list_head list; - struct bus_type *bus; + const char *name; + bool (*match)(struct device *dev); /* For general devices under the bus */ int (*find_device) (struct device *, acpi_handle *); /* For bridges, such as PCI root bridge, IDE controller */ -- cgit v1.1 From 924144818cf0edc5d9d70d3a44e7cbbf4544796c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sun, 3 Mar 2013 22:35:44 +0100 Subject: ACPI / glue: Drop .find_bridge() callback from struct acpi_bus_type After PCI and USB have stopped using the .find_bridge() callback in struct acpi_bus_type, the only remaining user of it is SATA, but SATA only pretends to be a user, because it points that callback to a stub always returning -ENODEV. For this reason, drop the SATA's dummy .find_bridge() callback and remove .find_bridge(), which is not used any more, from struct acpi_bus_type entirely. Signed-off-by: Rafael J. Wysocki Acked-by: Yinghai Lu Acked-by: Jeff Garzik --- drivers/acpi/glue.c | 26 +------------------------- drivers/ata/libata-acpi.c | 6 ------ include/acpi/acpi_bus.h | 3 --- 3 files changed, 1 insertion(+), 34 deletions(-) diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index b94d147..40a84cc 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -78,22 +78,6 @@ static struct acpi_bus_type *acpi_get_bus_type(struct device *dev) return ret; } -static int acpi_find_bridge_device(struct device *dev, acpi_handle * handle) -{ - struct acpi_bus_type *tmp; - int ret = -ENODEV; - - down_read(&bus_type_sem); - list_for_each_entry(tmp, &bus_type_list, list) { - if (tmp->find_bridge && !tmp->find_bridge(dev, handle)) { - ret = 0; - break; - } - } - up_read(&bus_type_sem); - return ret; -} - static acpi_status do_acpi_find_child(acpi_handle handle, u32 lvl_not_used, void *addr_p, void **ret_p) { @@ -262,15 +246,7 @@ static int acpi_platform_notify(struct device *dev) int ret; ret = acpi_bind_one(dev, NULL); - if (ret) { - if (!type) { - ret = acpi_find_bridge_device(dev, &handle); - if (!ret) - ret = acpi_bind_one(dev, handle); - - goto out; - } - + if (ret && type) { ret = type->find_device(dev, &handle); if (ret) { DBG("Unable to get handle for %s\n", dev_name(dev)); diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index c832a5c..beea311 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -1144,14 +1144,8 @@ static int ata_acpi_find_device(struct device *dev, acpi_handle *handle) return -ENODEV; } -static int ata_acpi_find_dummy(struct device *dev, acpi_handle *handle) -{ - return -ENODEV; -} - static struct acpi_bus_type ata_acpi_bus = { .name = "ATA", - .find_bridge = ata_acpi_find_dummy, .find_device = ata_acpi_find_device, }; diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index c751d7d..22ba56e 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -439,10 +439,7 @@ struct acpi_bus_type { struct list_head list; const char *name; bool (*match)(struct device *dev); - /* For general devices under the bus */ int (*find_device) (struct device *, acpi_handle *); - /* For bridges, such as PCI root bridge, IDE controller */ - int (*find_bridge) (struct device *, acpi_handle *); void (*setup)(struct device *); void (*cleanup)(struct device *); }; -- cgit v1.1 From ed018fa4dfc3d26da56b9ee7dc75e9d39a39a02b Mon Sep 17 00:00:00 2001 From: Gao feng Date: Mon, 4 Mar 2013 00:29:12 +0000 Subject: netfilter: xt_AUDIT: only generate audit log when audit enabled We should stop generting audit log if audit is disabled. Signed-off-by: Gao feng Acked-by: Thomas Graf Signed-off-by: Pablo Neira Ayuso --- net/netfilter/xt_AUDIT.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/netfilter/xt_AUDIT.c b/net/netfilter/xt_AUDIT.c index ba92824..3228d7f 100644 --- a/net/netfilter/xt_AUDIT.c +++ b/net/netfilter/xt_AUDIT.c @@ -124,6 +124,9 @@ audit_tg(struct sk_buff *skb, const struct xt_action_param *par) const struct xt_audit_info *info = par->targinfo; struct audit_buffer *ab; + if (audit_enabled == 0) + goto errout; + ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_NETFILTER_PKT); if (ab == NULL) goto errout; -- cgit v1.1 From 9df9e7832391cf699abbf39fc8d95d7e78297462 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 4 Mar 2013 02:45:41 +0000 Subject: netfilter: nfnetlink: silence warning if CONFIG_PROVE_RCU isn't set MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since commit c14b78e7decd0d1d5add6a4604feb8609fe920a9 ("netfilter: nfnetlink: add mutex per subsystem") building nefnetlink.o without CONFIG_PROVE_RCU set, triggers this GCC warning: net/netfilter/nfnetlink.c:65:22: warning: ‘nfnl_get_lock’ defined but not used [-Wunused-function] The cause of that warning is, in short, that rcu_lockdep_assert() compiles away if CONFIG_PROVE_RCU is not set. Silence this warning by open coding nfnl_get_lock() in the sole place it was called, which allows to remove that function. Signed-off-by: Paul Bolle Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nfnetlink.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/net/netfilter/nfnetlink.c b/net/netfilter/nfnetlink.c index d578ec2..0b1b32c 100644 --- a/net/netfilter/nfnetlink.c +++ b/net/netfilter/nfnetlink.c @@ -62,11 +62,6 @@ void nfnl_unlock(__u8 subsys_id) } EXPORT_SYMBOL_GPL(nfnl_unlock); -static struct mutex *nfnl_get_lock(__u8 subsys_id) -{ - return &table[subsys_id].mutex; -} - int nfnetlink_subsys_register(const struct nfnetlink_subsystem *n) { nfnl_lock(n->subsys_id); @@ -199,7 +194,7 @@ replay: rcu_read_unlock(); nfnl_lock(subsys_id); if (rcu_dereference_protected(table[subsys_id].subsys, - lockdep_is_held(nfnl_get_lock(subsys_id))) != ss || + lockdep_is_held(&table[subsys_id].mutex)) != ss || nfnetlink_find_client(type, ss) != nc) err = -EAGAIN; else if (nc->call) -- cgit v1.1 From 85c50a5899b23f4f893b0898b286023157b98376 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 4 Mar 2013 15:19:18 +0300 Subject: ALSA: seq: seq_oss_event: missing range checks The "dev" variable could be out of bounds. Calling snd_seq_oss_synth_is_valid() checks that it is is a valid device which has been opened. We check this inside set_note_event() so this function can't succeed without a valid "dev". But we need to do the check earlier to prevent invalid dereferences and memory corruption. One call tree where "dev" could be out of bounds is: -> snd_seq_oss_oob_user() -> snd_seq_oss_process_event() -> extended_event() -> note_on_event() Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai --- sound/core/seq/oss/seq_oss_event.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/sound/core/seq/oss/seq_oss_event.c b/sound/core/seq/oss/seq_oss_event.c index 066f5f3..c390886 100644 --- a/sound/core/seq/oss/seq_oss_event.c +++ b/sound/core/seq/oss/seq_oss_event.c @@ -285,7 +285,12 @@ local_event(struct seq_oss_devinfo *dp, union evrec *q, struct snd_seq_event *ev static int note_on_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, struct snd_seq_event *ev) { - struct seq_oss_synthinfo *info = &dp->synths[dev]; + struct seq_oss_synthinfo *info; + + if (!snd_seq_oss_synth_is_valid(dp, dev)) + return -ENXIO; + + info = &dp->synths[dev]; switch (info->arg.event_passing) { case SNDRV_SEQ_OSS_PROCESS_EVENTS: if (! info->ch || ch < 0 || ch >= info->nr_voices) { @@ -340,7 +345,12 @@ note_on_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, st static int note_off_event(struct seq_oss_devinfo *dp, int dev, int ch, int note, int vel, struct snd_seq_event *ev) { - struct seq_oss_synthinfo *info = &dp->synths[dev]; + struct seq_oss_synthinfo *info; + + if (!snd_seq_oss_synth_is_valid(dp, dev)) + return -ENXIO; + + info = &dp->synths[dev]; switch (info->arg.event_passing) { case SNDRV_SEQ_OSS_PROCESS_EVENTS: if (! info->ch || ch < 0 || ch >= info->nr_voices) { -- cgit v1.1 From 5a114b98661e3aaa0ac085eb931584dce3b0ef9b Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Mon, 4 Mar 2013 11:19:09 -0500 Subject: tile: work around bug in the generic sys_llseek sys_llseek should specify the high and low 32-bit seek values as "unsigned int" but instead it specifies "unsigned long". Since compat syscall arguments are always sign-extended on tile, this means that a seek value of 0xffffffff will be incorrectly interpreted as a value of -1ULL. To avoid the risk of breaking binary compatibility on architectures that already use sys_llseek this way, we follow the same path as MIPS and provide a wrapper override. Signed-off-by: Chris Metcalf Cc: stable@kernel.org [v3.6 onwards] --- arch/tile/include/asm/compat.h | 3 +++ arch/tile/kernel/compat.c | 13 +++++++++++++ 2 files changed, 16 insertions(+) diff --git a/arch/tile/include/asm/compat.h b/arch/tile/include/asm/compat.h index 001d418..78f1f2d 100644 --- a/arch/tile/include/asm/compat.h +++ b/arch/tile/include/asm/compat.h @@ -288,6 +288,9 @@ long compat_sys_sync_file_range2(int fd, unsigned int flags, long compat_sys_fallocate(int fd, int mode, u32 offset_lo, u32 offset_hi, u32 len_lo, u32 len_hi); +long compat_sys_llseek(unsigned int fd, unsigned int offset_high, + unsigned int offset_low, loff_t __user * result, + unsigned int origin); /* Assembly trampoline to avoid clobbering r0. */ long _compat_sys_rt_sigreturn(void); diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c index 7f72401..69034e2 100644 --- a/arch/tile/kernel/compat.c +++ b/arch/tile/kernel/compat.c @@ -76,6 +76,18 @@ long compat_sys_fallocate(int fd, int mode, ((loff_t)len_hi << 32) | len_lo); } +/* + * Avoid bug in generic sys_llseek() that specifies offset_high and + * offset_low as "unsigned long", thus making it possible to pass + * a sign-extended high 32 bits in offset_low. + */ +long compat_sys_llseek(unsigned int fd, unsigned int offset_high, + unsigned int offset_low, loff_t __user * result, + unsigned int origin) +{ + return sys_llseek(fd, offset_high, offset_low, result, origin); +} + /* Provide the compat syscall number to call mapping. */ #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), @@ -83,6 +95,7 @@ long compat_sys_fallocate(int fd, int mode, /* See comments in sys.c */ #define compat_sys_fadvise64_64 sys32_fadvise64_64 #define compat_sys_readahead sys32_readahead +#define sys_llseek compat_sys_llseek /* Call the assembly trampolines where necessary. */ #define compat_sys_rt_sigreturn _compat_sys_rt_sigreturn -- cgit v1.1 From 61bc95c1fbbb6a08b55bbe161fdf1ea5493fc595 Mon Sep 17 00:00:00 2001 From: Egbert Eich Date: Mon, 4 Mar 2013 09:24:38 -0500 Subject: DRM/i915: On G45 enable cursor plane briefly after enabling the display plane. On G45 some low res modes (800x600 and 1024x768) produce a blank screen when the display plane is enabled with with cursor plane off. Experiments showed that this issue occurred when the following conditions were met: a. a previous mode had the cursor plane enabled (Xserver). b. this mode or the previous one was using self refresh. (Thus the problem was only seen with low res modes). The screens lit up as soon as the cursor plane got enabled. Therefore the blank screen occurred only in console mode, not when running an Xserver. It also seemed to be necessary to disable self refresh while briefly enabling the cursor plane. Signed-off-by: Egbert Eich Bugzilla: https://bugs.freedesktop.org/attachment.cgi?bugid=61457 Acked-by: Chris Wilson [danvet: drop spurious whitespace change.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 09659ff..0a02e04 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3604,6 +3604,30 @@ static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable) */ } +/** + * i9xx_fixup_plane - ugly workaround for G45 to fire up the hardware + * cursor plane briefly if not already running after enabling the display + * plane. + * This workaround avoids occasional blank screens when self refresh is + * enabled. + */ +static void +g4x_fixup_plane(struct drm_i915_private *dev_priv, enum pipe pipe) +{ + u32 cntl = I915_READ(CURCNTR(pipe)); + + if ((cntl & CURSOR_MODE) == 0) { + u32 fw_bcl_self = I915_READ(FW_BLC_SELF); + + I915_WRITE(FW_BLC_SELF, fw_bcl_self & ~FW_BLC_SELF_EN); + I915_WRITE(CURCNTR(pipe), CURSOR_MODE_64_ARGB_AX); + intel_wait_for_vblank(dev_priv->dev, pipe); + I915_WRITE(CURCNTR(pipe), cntl); + I915_WRITE(CURBASE(pipe), I915_READ(CURBASE(pipe))); + I915_WRITE(FW_BLC_SELF, fw_bcl_self); + } +} + static void i9xx_crtc_enable(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; @@ -3629,6 +3653,8 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc) intel_enable_pipe(dev_priv, pipe, false); intel_enable_plane(dev_priv, plane, pipe); + if (IS_G4X(dev)) + g4x_fixup_plane(dev_priv, pipe); intel_crtc_load_lut(crtc); intel_update_fbc(dev); -- cgit v1.1 From b980955236922ae6106774511c5c05003d3ad225 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 4 Mar 2013 11:59:12 -0500 Subject: random: fix locking dependency with the tasklist_lock Commit 6133705494bb introduced a circular lock dependency because posix_cpu_timers_exit() is called by release_task(), which is holding a writer lock on tasklist_lock, and this can cause a deadlock since kill_fasync() gets called with nonblocking_pool.lock taken. There's no reason why kill_fasync() needs to be taken while the random pool is locked, so move it out to fix this locking dependency. Signed-off-by: "Theodore Ts'o" Reported-by: Russ Dill Cc: stable@kernel.org --- drivers/char/random.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/char/random.c b/drivers/char/random.c index 85e81ec..57d4b15 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -852,6 +852,7 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, int reserved) { unsigned long flags; + int wakeup_write = 0; /* Hold lock while accounting */ spin_lock_irqsave(&r->lock, flags); @@ -873,10 +874,8 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, else r->entropy_count = reserved; - if (r->entropy_count < random_write_wakeup_thresh) { - wake_up_interruptible(&random_write_wait); - kill_fasync(&fasync, SIGIO, POLL_OUT); - } + if (r->entropy_count < random_write_wakeup_thresh) + wakeup_write = 1; } DEBUG_ENT("debiting %zu entropy credits from %s%s\n", @@ -884,6 +883,11 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, spin_unlock_irqrestore(&r->lock, flags); + if (wakeup_write) { + wake_up_interruptible(&random_write_wait); + kill_fasync(&fasync, SIGIO, POLL_OUT); + } + return nbytes; } -- cgit v1.1 From 87c319a2c3c2efd397281089b9cdce3050febeff Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Mon, 4 Mar 2013 13:37:32 -0500 Subject: tile: properly use COMPAT_SYSCALL_DEFINEx This was pointed out by Al Viro. Using the correct wrappers properly does sign extension as necessary on syscall arguments. Signed-off-by: Chris Metcalf --- arch/tile/kernel/compat.c | 35 +++++++++++++++++++---------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/arch/tile/kernel/compat.c b/arch/tile/kernel/compat.c index 69034e2..6ea4cdb 100644 --- a/arch/tile/kernel/compat.c +++ b/arch/tile/kernel/compat.c @@ -32,45 +32,48 @@ * adapt the usual convention. */ -long compat_sys_truncate64(char __user *filename, u32 dummy, u32 low, u32 high) +COMPAT_SYSCALL_DEFINE4(truncate64, char __user *, filename, u32, dummy, + u32, low, u32, high) { return sys_truncate(filename, ((loff_t)high << 32) | low); } -long compat_sys_ftruncate64(unsigned int fd, u32 dummy, u32 low, u32 high) +COMPAT_SYSCALL_DEFINE4(ftruncate64, unsigned int, fd, u32, dummy, + u32, low, u32, high) { return sys_ftruncate(fd, ((loff_t)high << 32) | low); } -long compat_sys_pread64(unsigned int fd, char __user *ubuf, size_t count, - u32 dummy, u32 low, u32 high) +COMPAT_SYSCALL_DEFINE6(pread64, unsigned int, fd, char __user *, ubuf, + size_t, count, u32, dummy, u32, low, u32, high) { return sys_pread64(fd, ubuf, count, ((loff_t)high << 32) | low); } -long compat_sys_pwrite64(unsigned int fd, char __user *ubuf, size_t count, - u32 dummy, u32 low, u32 high) +COMPAT_SYSCALL_DEFINE6(pwrite64, unsigned int, fd, char __user *, ubuf, + size_t, count, u32, dummy, u32, low, u32, high) { return sys_pwrite64(fd, ubuf, count, ((loff_t)high << 32) | low); } -long compat_sys_lookup_dcookie(u32 low, u32 high, char __user *buf, size_t len) +COMPAT_SYSCALL_DEFINE4(lookup_dcookie, u32, low, u32, high, + char __user *, buf, size_t, len) { return sys_lookup_dcookie(((loff_t)high << 32) | low, buf, len); } -long compat_sys_sync_file_range2(int fd, unsigned int flags, - u32 offset_lo, u32 offset_hi, - u32 nbytes_lo, u32 nbytes_hi) +COMPAT_SYSCALL_DEFINE6(sync_file_range2, int, fd, unsigned int, flags, + u32, offset_lo, u32, offset_hi, + u32, nbytes_lo, u32, nbytes_hi) { return sys_sync_file_range(fd, ((loff_t)offset_hi << 32) | offset_lo, ((loff_t)nbytes_hi << 32) | nbytes_lo, flags); } -long compat_sys_fallocate(int fd, int mode, - u32 offset_lo, u32 offset_hi, - u32 len_lo, u32 len_hi) +COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode, + u32, offset_lo, u32, offset_hi, + u32, len_lo, u32, len_hi) { return sys_fallocate(fd, mode, ((loff_t)offset_hi << 32) | offset_lo, ((loff_t)len_hi << 32) | len_lo); @@ -81,9 +84,9 @@ long compat_sys_fallocate(int fd, int mode, * offset_low as "unsigned long", thus making it possible to pass * a sign-extended high 32 bits in offset_low. */ -long compat_sys_llseek(unsigned int fd, unsigned int offset_high, - unsigned int offset_low, loff_t __user * result, - unsigned int origin) +COMPAT_SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned int, offset_high, + unsigned int, offset_low, loff_t __user *, result, + unsigned int, origin) { return sys_llseek(fd, offset_high, offset_low, result, origin); } -- cgit v1.1 From ece6b0a2b25652d684a7ced4ae680a863af041e0 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Sun, 3 Mar 2013 16:18:11 +0000 Subject: rds: limit the size allocated by rds_message_alloc() Dave Jones reported the following bug: "When fed mangled socket data, rds will trust what userspace gives it, and tries to allocate enormous amounts of memory larger than what kmalloc can satisfy." WARNING: at mm/page_alloc.c:2393 __alloc_pages_nodemask+0xa0d/0xbe0() Hardware name: GA-MA78GM-S2H Modules linked in: vmw_vsock_vmci_transport vmw_vmci vsock fuse bnep dlci bridge 8021q garp stp mrp binfmt_misc l2tp_ppp l2tp_core rfcomm s Pid: 24652, comm: trinity-child2 Not tainted 3.8.0+ #65 Call Trace: [] warn_slowpath_common+0x75/0xa0 [] warn_slowpath_null+0x1a/0x20 [] __alloc_pages_nodemask+0xa0d/0xbe0 [] ? native_sched_clock+0x26/0x90 [] ? trace_hardirqs_off_caller+0x28/0xc0 [] ? trace_hardirqs_off+0xd/0x10 [] alloc_pages_current+0xb8/0x180 [] __get_free_pages+0x2a/0x80 [] kmalloc_order_trace+0x3e/0x1a0 [] __kmalloc+0x2f5/0x3a0 [] ? local_bh_enable_ip+0x7c/0xf0 [] rds_message_alloc+0x23/0xb0 [rds] [] rds_sendmsg+0x2b1/0x990 [rds] [] ? trace_hardirqs_off+0xd/0x10 [] sock_sendmsg+0xb0/0xe0 [] ? get_lock_stats+0x22/0x70 [] ? put_lock_stats.isra.23+0xe/0x40 [] sys_sendto+0x130/0x180 [] ? trace_hardirqs_on+0xd/0x10 [] ? _raw_spin_unlock_irq+0x3b/0x60 [] ? sysret_check+0x1b/0x56 [] ? trace_hardirqs_on_caller+0x115/0x1a0 [] ? trace_hardirqs_on_thunk+0x3a/0x3f [] system_call_fastpath+0x16/0x1b ---[ end trace eed6ae990d018c8b ]--- Reported-by: Dave Jones Cc: Dave Jones Cc: David S. Miller Cc: Venkat Venkatsubra Signed-off-by: Cong Wang Acked-by: Venkat Venkatsubra Signed-off-by: David S. Miller --- net/rds/message.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/rds/message.c b/net/rds/message.c index f0a4658..aff589c 100644 --- a/net/rds/message.c +++ b/net/rds/message.c @@ -197,6 +197,9 @@ struct rds_message *rds_message_alloc(unsigned int extra_len, gfp_t gfp) { struct rds_message *rm; + if (extra_len > KMALLOC_MAX_SIZE - sizeof(struct rds_message)) + return NULL; + rm = kzalloc(sizeof(struct rds_message) + extra_len, gfp); if (!rm) goto out; -- cgit v1.1 From 3f736868b47687d1336fe88185560b22bb92021e Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Sun, 3 Mar 2013 16:28:27 +0000 Subject: sctp: use KMALLOC_MAX_SIZE instead of its own MAX_KMALLOC_SIZE Don't definite its own MAX_KMALLOC_SIZE, use the one defined in mm. Cc: Vlad Yasevich Cc: Sridhar Samudrala Cc: Neil Horman Cc: David S. Miller Signed-off-by: Cong Wang Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/sctp/ssnmap.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/net/sctp/ssnmap.c b/net/sctp/ssnmap.c index 442ad4e..825ea94 100644 --- a/net/sctp/ssnmap.c +++ b/net/sctp/ssnmap.c @@ -41,8 +41,6 @@ #include #include -#define MAX_KMALLOC_SIZE 131072 - static struct sctp_ssnmap *sctp_ssnmap_init(struct sctp_ssnmap *map, __u16 in, __u16 out); @@ -65,7 +63,7 @@ struct sctp_ssnmap *sctp_ssnmap_new(__u16 in, __u16 out, int size; size = sctp_ssnmap_size(in, out); - if (size <= MAX_KMALLOC_SIZE) + if (size <= KMALLOC_MAX_SIZE) retval = kmalloc(size, gfp); else retval = (struct sctp_ssnmap *) @@ -82,7 +80,7 @@ struct sctp_ssnmap *sctp_ssnmap_new(__u16 in, __u16 out, return retval; fail_map: - if (size <= MAX_KMALLOC_SIZE) + if (size <= KMALLOC_MAX_SIZE) kfree(retval); else free_pages((unsigned long)retval, get_order(size)); @@ -124,7 +122,7 @@ void sctp_ssnmap_free(struct sctp_ssnmap *map) int size; size = sctp_ssnmap_size(map->in.len, map->out.len); - if (size <= MAX_KMALLOC_SIZE) + if (size <= KMALLOC_MAX_SIZE) kfree(map); else free_pages((unsigned long)map, get_order(size)); -- cgit v1.1 From de5fb0a053482d89262c3284b67884cd2c621adc Mon Sep 17 00:00:00 2001 From: Frank Li Date: Sun, 3 Mar 2013 17:34:25 +0000 Subject: net: fec: put tx to napi poll function to fix dead lock up stack ndo_start_xmit already hold lock. fec_enet_start_xmit needn't spin lock. stat_xmit just update fep->cur_tx fec_enet_tx just update fep->dirty_tx Reserve a empty bdb to check full or empty cur_tx == dirty_tx means full cur_tx == dirty_tx +1 means empty So needn't is_full variable. Fix spin lock deadlock ================================= [ INFO: inconsistent lock state ] 3.8.0-rc5+ #107 Not tainted --------------------------------- inconsistent {HARDIRQ-ON-W} -> {IN-HARDIRQ-W} usage. ptp4l/615 [HC1[1]:SC0[0]:HE0:SE1] takes: (&(&list->lock)->rlock#3){?.-...}, at: [<8042c3c4>] skb_queue_tail+0x20/0x50 {HARDIRQ-ON-W} state was registered at: [<80067250>] mark_lock+0x154/0x4e8 [<800676f4>] mark_irqflags+0x110/0x1a4 [<80069208>] __lock_acquire+0x494/0x9c0 [<80069ce8>] lock_acquire+0x90/0xa4 [<80527ad0>] _raw_spin_lock_bh+0x44/0x54 [<804877e0>] first_packet_length+0x38/0x1f0 [<804879e4>] udp_poll+0x4c/0x5c [<804231f8>] sock_poll+0x24/0x28 [<800d27f0>] do_poll.isra.10+0x120/0x254 [<800d36e4>] do_sys_poll+0x15c/0x1e8 [<800d3828>] sys_poll+0x60/0xc8 [<8000e780>] ret_fast_syscall+0x0/0x3c *** DEADLOCK *** 1 lock held by ptp4l/615: #0: (&(&fep->hw_lock)->rlock){-.-...}, at: [<80355f9c>] fec_enet_tx+0x24/0x268 stack backtrace: Backtrace: [<800121e0>] (dump_backtrace+0x0/0x10c) from [<80516210>] (dump_stack+0x18/0x1c) r6:8063b1fc r5:bf38b2f8 r4:bf38b000 r3:bf38b000 [<805161f8>] (dump_stack+0x0/0x1c) from [<805189d0>] (print_usage_bug.part.34+0x164/0x1a4) [<8051886c>] (print_usage_bug.part.34+0x0/0x1a4) from [<80518a88>] (print_usage_bug+0x78/0x88) r8:80065664 r7:bf38b2f8 r6:00000002 r5:00000000 r4:bf38b000 [<80518a10>] (print_usage_bug+0x0/0x88) from [<80518b58>] (mark_lock_irq+0xc0/0x270) r7:bf38b000 r6:00000002 r5:bf38b2f8 r4:00000000 [<80518a98>] (mark_lock_irq+0x0/0x270) from [<80067270>] (mark_lock+0x174/0x4e8) [<800670fc>] (mark_lock+0x0/0x4e8) from [<80067744>] (mark_irqflags+0x160/0x1a4) [<800675e4>] (mark_irqflags+0x0/0x1a4) from [<80069208>] (__lock_acquire+0x494/0x9c0) r5:00000002 r4:bf38b2f8 [<80068d74>] (__lock_acquire+0x0/0x9c0) from [<80069ce8>] (lock_acquire+0x90/0xa4) [<80069c58>] (lock_acquire+0x0/0xa4) from [<805278d8>] (_raw_spin_lock_irqsave+0x4c/0x60) [<8052788c>] (_raw_spin_lock_irqsave+0x0/0x60) from [<8042c3c4>] (skb_queue_tail+0x20/0x50) r6:bfbb2180 r5:bf1d0190 r4:bf1d0184 [<8042c3a4>] (skb_queue_tail+0x0/0x50) from [<8042c4cc>] (sock_queue_err_skb+0xd8/0x188) r6:00000056 r5:bfbb2180 r4:bf1d0000 r3:00000000 [<8042c3f4>] (sock_queue_err_skb+0x0/0x188) from [<8042d15c>] (skb_tstamp_tx+0x70/0xa0) r6:bf0dddb0 r5:bf1d0000 r4:bfbb2180 r3:00000004 [<8042d0ec>] (skb_tstamp_tx+0x0/0xa0) from [<803561d0>] (fec_enet_tx+0x258/0x268) r6:c089d260 r5:00001c00 r4:bfbd0000 [<80355f78>] (fec_enet_tx+0x0/0x268) from [<803562cc>] (fec_enet_interrupt+0xec/0xf8) [<803561e0>] (fec_enet_interrupt+0x0/0xf8) from [<8007d5b0>] (handle_irq_event_percpu+0x54/0x1a0) [<8007d55c>] (handle_irq_event_percpu+0x0/0x1a0) from [<8007d740>] (handle_irq_event+0x44/0x64) [<8007d6fc>] (handle_irq_event+0x0/0x64) from [<80080690>] (handle_fasteoi_irq+0xc4/0x15c) r6:bf0dc000 r5:bf811290 r4:bf811240 r3:00000000 [<800805cc>] (handle_fasteoi_irq+0x0/0x15c) from [<8007ceec>] (generic_handle_irq+0x28/0x38) r5:807130c8 r4:00000096 [<8007cec4>] (generic_handle_irq+0x0/0x38) from [<8000f16c>] (handle_IRQ+0x54/0xb4) r4:8071d280 r3:00000180 [<8000f118>] (handle_IRQ+0x0/0xb4) from [<80008544>] (gic_handle_irq+0x30/0x64) r8:8000e924 r7:f4000100 r6:bf0ddef8 r5:8071c974 r4:f400010c r3:00000000 [<80008514>] (gic_handle_irq+0x0/0x64) from [<8000e2e4>] (__irq_svc+0x44/0x5c) Exception stack(0xbf0ddef8 to 0xbf0ddf40) Signed-off-by: Frank Li Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.c | 85 +++++++++++++++++------------------- drivers/net/ethernet/freescale/fec.h | 3 -- 2 files changed, 41 insertions(+), 47 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index fccc3bf..069a155 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -246,14 +246,13 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) struct bufdesc *bdp; void *bufaddr; unsigned short status; - unsigned long flags; + unsigned int index; if (!fep->link) { /* Link is down or autonegotiation is in progress. */ return NETDEV_TX_BUSY; } - spin_lock_irqsave(&fep->hw_lock, flags); /* Fill in a Tx ring entry */ bdp = fep->cur_tx; @@ -264,7 +263,6 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) * This should not happen, since ndev->tbusy should be set. */ printk("%s: tx queue full!.\n", ndev->name); - spin_unlock_irqrestore(&fep->hw_lock, flags); return NETDEV_TX_BUSY; } @@ -280,13 +278,13 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) * 4-byte boundaries. Use bounce buffers to copy data * and get it aligned. Ugh. */ + if (fep->bufdesc_ex) + index = (struct bufdesc_ex *)bdp - + (struct bufdesc_ex *)fep->tx_bd_base; + else + index = bdp - fep->tx_bd_base; + if (((unsigned long) bufaddr) & FEC_ALIGNMENT) { - unsigned int index; - if (fep->bufdesc_ex) - index = (struct bufdesc_ex *)bdp - - (struct bufdesc_ex *)fep->tx_bd_base; - else - index = bdp - fep->tx_bd_base; memcpy(fep->tx_bounce[index], skb->data, skb->len); bufaddr = fep->tx_bounce[index]; } @@ -300,10 +298,7 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) swap_buffer(bufaddr, skb->len); /* Save skb pointer */ - fep->tx_skbuff[fep->skb_cur] = skb; - - ndev->stats.tx_bytes += skb->len; - fep->skb_cur = (fep->skb_cur+1) & TX_RING_MOD_MASK; + fep->tx_skbuff[index] = skb; /* Push the data cache so the CPM does not get stale memory * data. @@ -331,26 +326,22 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) ebdp->cbd_esc = BD_ENET_TX_INT; } } - /* Trigger transmission start */ - writel(0, fep->hwp + FEC_X_DES_ACTIVE); - /* If this was the last BD in the ring, start at the beginning again. */ if (status & BD_ENET_TX_WRAP) bdp = fep->tx_bd_base; else bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); - if (bdp == fep->dirty_tx) { - fep->tx_full = 1; + fep->cur_tx = bdp; + + if (fep->cur_tx == fep->dirty_tx) netif_stop_queue(ndev); - } - fep->cur_tx = bdp; + /* Trigger transmission start */ + writel(0, fep->hwp + FEC_X_DES_ACTIVE); skb_tx_timestamp(skb); - spin_unlock_irqrestore(&fep->hw_lock, flags); - return NETDEV_TX_OK; } @@ -406,11 +397,8 @@ fec_restart(struct net_device *ndev, int duplex) writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE, fep->hwp + FEC_X_DES_START); - fep->dirty_tx = fep->cur_tx = fep->tx_bd_base; fep->cur_rx = fep->rx_bd_base; - /* Reset SKB transmit buffers. */ - fep->skb_cur = fep->skb_dirty = 0; for (i = 0; i <= TX_RING_MOD_MASK; i++) { if (fep->tx_skbuff[i]) { dev_kfree_skb_any(fep->tx_skbuff[i]); @@ -573,20 +561,35 @@ fec_enet_tx(struct net_device *ndev) struct bufdesc *bdp; unsigned short status; struct sk_buff *skb; + int index = 0; fep = netdev_priv(ndev); - spin_lock(&fep->hw_lock); bdp = fep->dirty_tx; + /* get next bdp of dirty_tx */ + if (bdp->cbd_sc & BD_ENET_TX_WRAP) + bdp = fep->tx_bd_base; + else + bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); + while (((status = bdp->cbd_sc) & BD_ENET_TX_READY) == 0) { - if (bdp == fep->cur_tx && fep->tx_full == 0) + + /* current queue is empty */ + if (bdp == fep->cur_tx) break; + if (fep->bufdesc_ex) + index = (struct bufdesc_ex *)bdp - + (struct bufdesc_ex *)fep->tx_bd_base; + else + index = bdp - fep->tx_bd_base; + dma_unmap_single(&fep->pdev->dev, bdp->cbd_bufaddr, FEC_ENET_TX_FRSIZE, DMA_TO_DEVICE); bdp->cbd_bufaddr = 0; - skb = fep->tx_skbuff[fep->skb_dirty]; + skb = fep->tx_skbuff[index]; + /* Check for errors. */ if (status & (BD_ENET_TX_HB | BD_ENET_TX_LC | BD_ENET_TX_RL | BD_ENET_TX_UN | @@ -631,8 +634,9 @@ fec_enet_tx(struct net_device *ndev) /* Free the sk buffer associated with this last transmit */ dev_kfree_skb_any(skb); - fep->tx_skbuff[fep->skb_dirty] = NULL; - fep->skb_dirty = (fep->skb_dirty + 1) & TX_RING_MOD_MASK; + fep->tx_skbuff[index] = NULL; + + fep->dirty_tx = bdp; /* Update pointer to next buffer descriptor to be transmitted */ if (status & BD_ENET_TX_WRAP) @@ -642,14 +646,12 @@ fec_enet_tx(struct net_device *ndev) /* Since we have freed up a buffer, the ring is no longer full */ - if (fep->tx_full) { - fep->tx_full = 0; + if (fep->dirty_tx != fep->cur_tx) { if (netif_queue_stopped(ndev)) netif_wake_queue(ndev); } } - fep->dirty_tx = bdp; - spin_unlock(&fep->hw_lock); + return; } @@ -816,7 +818,7 @@ fec_enet_interrupt(int irq, void *dev_id) int_events = readl(fep->hwp + FEC_IEVENT); writel(int_events, fep->hwp + FEC_IEVENT); - if (int_events & FEC_ENET_RXF) { + if (int_events & (FEC_ENET_RXF | FEC_ENET_TXF)) { ret = IRQ_HANDLED; /* Disable the RX interrupt */ @@ -827,15 +829,6 @@ fec_enet_interrupt(int irq, void *dev_id) } } - /* Transmit OK, or non-fatal error. Update the buffer - * descriptors. FEC handles all errors, we just discover - * them as part of the transmit process. - */ - if (int_events & FEC_ENET_TXF) { - ret = IRQ_HANDLED; - fec_enet_tx(ndev); - } - if (int_events & FEC_ENET_MII) { ret = IRQ_HANDLED; complete(&fep->mdio_done); @@ -851,6 +844,8 @@ static int fec_enet_rx_napi(struct napi_struct *napi, int budget) int pkts = fec_enet_rx(ndev, budget); struct fec_enet_private *fep = netdev_priv(ndev); + fec_enet_tx(ndev); + if (pkts < budget) { napi_complete(napi); writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK); @@ -1646,6 +1641,7 @@ static int fec_enet_init(struct net_device *ndev) /* ...and the same for transmit */ bdp = fep->tx_bd_base; + fep->cur_tx = bdp; for (i = 0; i < TX_RING_SIZE; i++) { /* Initialize the BD for every fragment in the page. */ @@ -1657,6 +1653,7 @@ static int fec_enet_init(struct net_device *ndev) /* Set the last buffer to wrap */ bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex); bdp->cbd_sc |= BD_SC_WRAP; + fep->dirty_tx = bdp; fec_restart(ndev, 0); diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index 01579b8..c0f63be 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -214,8 +214,6 @@ struct fec_enet_private { unsigned char *tx_bounce[TX_RING_SIZE]; struct sk_buff *tx_skbuff[TX_RING_SIZE]; struct sk_buff *rx_skbuff[RX_RING_SIZE]; - ushort skb_cur; - ushort skb_dirty; /* CPM dual port RAM relative addresses */ dma_addr_t bd_dma; @@ -227,7 +225,6 @@ struct fec_enet_private { /* The ring entries to be free()ed */ struct bufdesc *dirty_tx; - uint tx_full; /* hold while accessing the HW like ringbuffer for tx/rx but not MAC */ spinlock_t hw_lock; -- cgit v1.1 From 3e8b0ac3e41e3c882222a5522d5df7212438ab51 Mon Sep 17 00:00:00 2001 From: Lorenzo Colitti Date: Sun, 3 Mar 2013 20:46:46 +0000 Subject: net: ipv6: Don't purge default router if accept_ra=2 Setting net.ipv6.conf..accept_ra=2 causes the kernel to accept RAs even when forwarding is enabled. However, enabling forwarding purges all default routes on the system, breaking connectivity until the next RA is received. Fix this by not purging default routes on interfaces that have accept_ra=2. Signed-off-by: Lorenzo Colitti Acked-by: YOSHIFUJI Hideaki Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/route.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 9282665..e5fe004 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -1915,7 +1915,8 @@ void rt6_purge_dflt_routers(struct net *net) restart: read_lock_bh(&table->tb6_lock); for (rt = table->tb6_root.leaf; rt; rt = rt->dst.rt6_next) { - if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) { + if (rt->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF) && + (!rt->rt6i_idev || rt->rt6i_idev->cnf.accept_ra != 2)) { dst_hold(&rt->dst); read_unlock_bh(&table->tb6_lock); ip6_del_rt(rt); -- cgit v1.1 From acac8406cd523a3afbd6c6db31e9f763644bf6ba Mon Sep 17 00:00:00 2001 From: Frank Li Date: Sun, 3 Mar 2013 20:52:38 +0000 Subject: net: fec: fix build error in no MXC platform MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit build error cause by Commit ff43da86c69d76a726ffe7d1666148960dc1d108 ("NET: FEC: dynamtic check DMA desc buff type") drivers/net/ethernet/freescale/fec.c: In function ‘fec_enet_get_nextdesc’: drivers/net/ethernet/freescale/fec.c:215:18: error: invalid use of undefined type ‘struct bufdesc_ex’ drivers/net/ethernet/freescale/fec.c: In function ‘fec_enet_get_prevdesc’: drivers/net/ethernet/freescale/fec.c:224:18: error: invalid use of undefined type ‘struct bufdesc_ex’ drivers/net/ethernet/freescale/fec.c: In function ‘fec_enet_start_xmit’: drivers/net/ethernet/freescale/fec.c:286:37: error: arithmetic on pointer to an incomplete type drivers/net/ethernet/freescale/fec.c:287:13: error: arithmetic on pointer to an incomplete type drivers/net/ethernet/freescale/fec.c:324:7: error: dereferencing pointer to incomplete type etc.... Signed-off-by: Frank Li Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.h | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index c0f63be..f539007 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -97,6 +97,13 @@ struct bufdesc { unsigned short cbd_sc; /* Control and status info */ unsigned long cbd_bufaddr; /* Buffer address */ }; +#else +struct bufdesc { + unsigned short cbd_sc; /* Control and status info */ + unsigned short cbd_datlen; /* Data length */ + unsigned long cbd_bufaddr; /* Buffer address */ +}; +#endif struct bufdesc_ex { struct bufdesc desc; @@ -107,14 +114,6 @@ struct bufdesc_ex { unsigned short res0[4]; }; -#else -struct bufdesc { - unsigned short cbd_sc; /* Control and status info */ - unsigned short cbd_datlen; /* Data length */ - unsigned long cbd_bufaddr; /* Buffer address */ -}; -#endif - /* * The following definitions courtesy of commproc.h, which where * Copyright (c) 1997 Dan Malek (dmalek@jlc.net). -- cgit v1.1 From 7dac1b514a00817ddb43704068c14ffd8b8fba19 Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Sun, 3 Mar 2013 20:57:18 +0000 Subject: rds: simplify a warning message Cc: David S. Miller Cc: Venkat Venkatsubra Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- net/rds/message.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/net/rds/message.c b/net/rds/message.c index aff589c..aba232f 100644 --- a/net/rds/message.c +++ b/net/rds/message.c @@ -82,10 +82,7 @@ static void rds_message_purge(struct rds_message *rm) void rds_message_put(struct rds_message *rm) { rdsdebug("put rm %p ref %d\n", rm, atomic_read(&rm->m_refcount)); - if (atomic_read(&rm->m_refcount) == 0) { -printk(KERN_CRIT "danger refcount zero on %p\n", rm); -WARN_ON(1); - } + WARN(!atomic_read(&rm->m_refcount), "danger refcount zero on %p\n", rm); if (atomic_dec_and_test(&rm->m_refcount)) { BUG_ON(!list_empty(&rm->m_sock_item)); BUG_ON(!list_empty(&rm->m_conn_item)); -- cgit v1.1 From d2123be0e55101742dacd6dae60cdd0f1e2ef302 Mon Sep 17 00:00:00 2001 From: Silviu-Mihai Popescu Date: Sun, 3 Mar 2013 21:09:31 +0000 Subject: CAIF: fix sparse warning for caif_usb This fixes the following sparse warning: net/caif/caif_usb.c:84:16: warning: symbol 'cfusbl_create' was not declared. Should it be static? Signed-off-by: Silviu-Mihai Popescu Signed-off-by: David S. Miller --- net/caif/caif_usb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/caif/caif_usb.c b/net/caif/caif_usb.c index 3ebc8cb..ef8ebaa 100644 --- a/net/caif/caif_usb.c +++ b/net/caif/caif_usb.c @@ -81,8 +81,8 @@ static void cfusbl_ctrlcmd(struct cflayer *layr, enum caif_ctrlcmd ctrl, layr->up->ctrlcmd(layr->up, ctrl, layr->id); } -struct cflayer *cfusbl_create(int phyid, u8 ethaddr[ETH_ALEN], - u8 braddr[ETH_ALEN]) +static struct cflayer *cfusbl_create(int phyid, u8 ethaddr[ETH_ALEN], + u8 braddr[ETH_ALEN]) { struct cfusbl *this = kmalloc(sizeof(struct cfusbl), GFP_ATOMIC); -- cgit v1.1 From aab2b4bf224ef8358d262f95b568b8ad0cecf0a0 Mon Sep 17 00:00:00 2001 From: Neal Cardwell Date: Mon, 4 Mar 2013 06:23:05 +0000 Subject: tcp: fix double-counted receiver RTT when leaving receiver fast path We should not update ts_recent and call tcp_rcv_rtt_measure_ts() both before and after going to step5. That wastes CPU and double-counts the receiver-side RTT sample. Signed-off-by: Neal Cardwell Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index a759e19..0d9bdac 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -5485,6 +5485,9 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb, if (tcp_checksum_complete_user(sk, skb)) goto csum_error; + if ((int)skb->truesize > sk->sk_forward_alloc) + goto step5; + /* Predicted packet is in window by definition. * seq == rcv_nxt and rcv_wup <= rcv_nxt. * Hence, check seq<=rcv_wup reduces to: @@ -5496,9 +5499,6 @@ int tcp_rcv_established(struct sock *sk, struct sk_buff *skb, tcp_rcv_rtt_measure_ts(sk, skb); - if ((int)skb->truesize > sk->sk_forward_alloc) - goto step5; - NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPHPHITS); /* Bulk data transfer: receiver */ -- cgit v1.1 From 0adcbaf78f6267baf4eecc201107d8f8ff3b200c Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 11 Feb 2013 14:46:00 -0800 Subject: ARM: OMAP1: Fix build related to kgdb.h no longer including serial_8250.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Commit 16559ae4 (kgdb: remove #include from kgdb.h) had a side effect of breaking omap1_defconfig build as some headers were included indirectly: arch/arm/mach-omap1/board-h2.c:249: error: ‘INT_KEYBOARD’ undeclared here (not in a function) ... This worked earlier as linux/serial_8250.h included linux/serial_core.h, via linux/serial_8250.h from linux/kgdb.h. Fix this by including the necessary headers directly. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/common.h | 2 ++ drivers/video/omap/lcd_ams_delta.c | 1 + drivers/video/omap/lcd_osk.c | 3 +++ 3 files changed, 6 insertions(+) diff --git a/arch/arm/mach-omap1/common.h b/arch/arm/mach-omap1/common.h index fb18831..14f7e99 100644 --- a/arch/arm/mach-omap1/common.h +++ b/arch/arm/mach-omap1/common.h @@ -31,6 +31,8 @@ #include +#include + #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850) void omap7xx_map_io(void); #else diff --git a/drivers/video/omap/lcd_ams_delta.c b/drivers/video/omap/lcd_ams_delta.c index ed4cad8..4a5f2cd 100644 --- a/drivers/video/omap/lcd_ams_delta.c +++ b/drivers/video/omap/lcd_ams_delta.c @@ -27,6 +27,7 @@ #include #include +#include #include #include "omapfb.h" diff --git a/drivers/video/omap/lcd_osk.c b/drivers/video/omap/lcd_osk.c index 3aa62da..7fbe04b 100644 --- a/drivers/video/omap/lcd_osk.c +++ b/drivers/video/omap/lcd_osk.c @@ -24,7 +24,10 @@ #include #include + +#include #include + #include "omapfb.h" static int osk_panel_init(struct lcd_panel *panel, struct omapfb_device *fbdev) -- cgit v1.1 From 31d9adca82ce65e5c99d045b5fd917c702b6fce3 Mon Sep 17 00:00:00 2001 From: Jon Hunter Date: Mon, 18 Feb 2013 07:57:39 -0600 Subject: ARM: OMAP2+: Fix broken gpmc support Commit 6797b4fe (ARM: OMAP2+: Prevent potential crash if GPMC probe fails) added code to ensure that GPMC chip-selects could not be requested until the device probe was successful. The chip-selects should have been unreserved at the end of the probe function, but the code to unreserve them appears to have ended up in the gpmc_calc_timings() function and hence, this is causing problems requesting chip-selects. Fix this merge error by unreserving the chip-selects at the end of the probe, but before we call the gpmc child probe functions (for device-tree) which request a chip-select. Signed-off-by: Jon Hunter Tested-by: Ezequiel Garcia Tested-by: Philip Avinash Tested-by: Grazvydas Ignotas [tony@atomide.com: updated description to add breaking commit id] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/gpmc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c index e4b16c8..410e1ba 100644 --- a/arch/arm/mach-omap2/gpmc.c +++ b/arch/arm/mach-omap2/gpmc.c @@ -1122,9 +1122,6 @@ int gpmc_calc_timings(struct gpmc_timings *gpmc_t, /* TODO: remove, see function definition */ gpmc_convert_ps_to_ns(gpmc_t); - /* Now the GPMC is initialised, unreserve the chip-selects */ - gpmc_cs_map = 0; - return 0; } @@ -1383,6 +1380,9 @@ static int gpmc_probe(struct platform_device *pdev) if (IS_ERR_VALUE(gpmc_setup_irq())) dev_warn(gpmc_dev, "gpmc_setup_irq failed\n"); + /* Now the GPMC is initialised, unreserve the chip-selects */ + gpmc_cs_map = 0; + rc = gpmc_probe_dt(pdev); if (rc < 0) { clk_disable_unprepare(gpmc_l3_clk); -- cgit v1.1 From 990fa4f537092551464a86928c1a056788183101 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Tue, 19 Feb 2013 18:28:31 +0530 Subject: ARM: OMAP3: board-generic: Add missing omap3_init_late The .init_late callback for OMAP3 has been missing for DT builds, which causes a lot of late PM initializations to be missed in turn. Signed-off-by: Rajendra Nayak Acked-by: Santosh Shilimkar Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-generic.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 0274ff7..e54a480 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -102,6 +102,7 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)") .init_irq = omap_intc_of_init, .handle_irq = omap3_intc_handle_irq, .init_machine = omap_generic_init, + .init_late = omap3_init_late, .init_time = omap3_sync32k_timer_init, .dt_compat = omap3_boards_compat, .restart = omap3xxx_restart, @@ -119,6 +120,7 @@ DT_MACHINE_START(OMAP3_GP_DT, "Generic OMAP3-GP (Flattened Device Tree)") .init_irq = omap_intc_of_init, .handle_irq = omap3_intc_handle_irq, .init_machine = omap_generic_init, + .init_late = omap3_init_late, .init_time = omap3_secure_sync32k_timer_init, .dt_compat = omap3_gp_boards_compat, .restart = omap3xxx_restart, -- cgit v1.1 From 8a6201b9ea71b521557d25e356eef640176899df Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Mon, 4 Mar 2013 10:28:21 -0800 Subject: ARM: OMAP2+: Fix unmet direct dependencies for zoom for 8250 serial We should not select drivers from kconfig as they should by default be optional. Otherwise we'll be chasing broken dependencies forever: warning: (MACH_OMAP_ZOOM2 && MACH_OMAP_ZOOM3 && MWAVE) selects SERIAL_8250 which has unmet direct dependencies (TTY && HAS_IOMEM && GENERIC_HARDIRQS) Fix the issue by removing the selects for zoom and add them to omap2plus_defconfig. Reported-by: Russell King Signed-off-by: Tony Lindgren --- arch/arm/configs/omap2plus_defconfig | 2 ++ arch/arm/mach-omap2/Kconfig | 6 ------ 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig index b16bae2..bd07864 100644 --- a/arch/arm/configs/omap2plus_defconfig +++ b/arch/arm/configs/omap2plus_defconfig @@ -126,6 +126,8 @@ CONFIG_INPUT_MISC=y CONFIG_INPUT_TWL4030_PWRBUTTON=y CONFIG_VT_HW_CONSOLE_BINDING=y # CONFIG_LEGACY_PTYS is not set +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y CONFIG_SERIAL_8250_NR_UARTS=32 CONFIG_SERIAL_8250_EXTENDED=y CONFIG_SERIAL_8250_MANY_PORTS=y diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig index 49ac3df..8111cd9 100644 --- a/arch/arm/mach-omap2/Kconfig +++ b/arch/arm/mach-omap2/Kconfig @@ -311,9 +311,6 @@ config MACH_OMAP_ZOOM2 default y select OMAP_PACKAGE_CBB select REGULATOR_FIXED_VOLTAGE if REGULATOR - select SERIAL_8250 - select SERIAL_8250_CONSOLE - select SERIAL_CORE_CONSOLE config MACH_OMAP_ZOOM3 bool "OMAP3630 Zoom3 board" @@ -321,9 +318,6 @@ config MACH_OMAP_ZOOM3 default y select OMAP_PACKAGE_CBP select REGULATOR_FIXED_VOLTAGE if REGULATOR - select SERIAL_8250 - select SERIAL_8250_CONSOLE - select SERIAL_CORE_CONSOLE config MACH_CM_T35 bool "CompuLab CM-T35/CM-T3730 modules" -- cgit v1.1 From 0fa26ce9f3fbaf517f752283f5b7efc5cbb51916 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 19 Feb 2013 12:24:23 +0200 Subject: ARM: OMAP2+: mux: fix debugfs file permission OMAP's debugfs interface creates one file for each signal in the mux table, such file provides a read method but didn't provide read permission. Fix it. Signed-off-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/mux.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 6a217c9..03fa4f4 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -739,8 +739,9 @@ static void __init omap_mux_dbg_create_entry( list_for_each_entry(e, &partition->muxmodes, node) { struct omap_mux *m = &e->mux; - (void)debugfs_create_file(m->muxnames[0], S_IWUSR, mux_dbg_dir, - m, &omap_mux_dbg_signal_fops); + (void)debugfs_create_file(m->muxnames[0], S_IWUSR | S_IRUGO, + mux_dbg_dir, m, + &omap_mux_dbg_signal_fops); } } -- cgit v1.1 From 39bb356ee60581c3d28d6a636e5f221006d95f0c Mon Sep 17 00:00:00 2001 From: Ruslan Bilovol Date: Sun, 3 Feb 2013 02:15:10 +0200 Subject: ARM: OMAP2+: mux: correct wrong error messages This is needed because the omap_mux_get_by_name() function calls the _omap_mux_get_by_name subfunction for each mux partition until needed mux is not found. As a result, we get messages like "Could not find signal XXX" for each partition where this mux name does not exist. This patch fixes wrong error message in the _omap_mux_get_by_name() function moving it to the omap_mux_get_by_name() one and as result reduces noise in the kernel log. My kernel log without this patch: [...] [ 0.221801] omap_mux_init: Add partition: #2: wkup, flags: 3 [ 0.222045] _omap_mux_get_by_name: Could not find signal fref_clk0_out.sys_drm_msecure [ 0.222137] _omap_mux_get_by_name: Could not find signal sys_nirq [ 0.222167] _omap_mux_get_by_name: Could not find signal sys_nirq [ 0.225006] _omap_mux_get_by_name: Could not find signal uart1_rx.uart1_rx [ 0.225006] _omap_mux_get_by_name: Could not find signal uart1_rx.uart1_rx [ 0.270111] _omap_mux_get_by_name: Could not find signal fref_clk4_out.fref_clk4_out [ 0.273406] twl: not initialized [...] My kernel log with this patch: [...] [ 0.221771] omap_mux_init: Add partition: #2: wkup, flags: 3 [ 0.222106] omap_mux_get_by_name: Could not find signal sys_nirq [ 0.224945] omap_mux_get_by_name: Could not find signal uart1_rx.uart1_rx [ 0.274536] twl: not initialized [...] Signed-off-by: Ruslan Bilovol Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/mux.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 03fa4f4..f82cf87 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -211,8 +211,6 @@ static int __init _omap_mux_get_by_name(struct omap_mux_partition *partition, return -EINVAL; } - pr_err("%s: Could not find signal %s\n", __func__, muxname); - return -ENODEV; } @@ -234,6 +232,8 @@ int __init omap_mux_get_by_name(const char *muxname, return mux_mode; } + pr_err("%s: Could not find signal %s\n", __func__, muxname); + return -ENODEV; } -- cgit v1.1 From 08913c2d2445da9f17a32186418e61baa4ae85b6 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 8 Feb 2013 20:41:45 +0530 Subject: ARM: OMAP2+: Remove duplicate omap4430_init_late() declaration Commit bbd707ac {ARM: omap2: use machine specific hook for late init} accidentally added two declarations for omap4430_init_late(). Remove the duplicate declaration. Cc: Shawn Guo Signed-off-by: Santosh Shilimkar Reviewed-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/common.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h index 0a6b9c7..40f4a03 100644 --- a/arch/arm/mach-omap2/common.h +++ b/arch/arm/mach-omap2/common.h @@ -108,7 +108,6 @@ void omap35xx_init_late(void); void omap3630_init_late(void); void am35xx_init_late(void); void ti81xx_init_late(void); -void omap4430_init_late(void); int omap2_common_pm_late_init(void); #if defined(CONFIG_SOC_OMAP2420) || defined(CONFIG_SOC_OMAP2430) -- cgit v1.1 From 9bf7a4890518186238d2579be16ecc5190a707c0 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 1 Mar 2013 13:35:47 -0500 Subject: Btrfs: use set_nlink if our i_nlink is 0 We need to inc the nlink of deleted entries when running replay so we can do the unlink on the fs_root and get everything cleaned up and then have the orphan cleanup do the right thing. The problem is inc_nlink complains about this, even thought it still does the right thing. So use set_nlink() if our i_nlink is 0 to keep users from seeing the warnings during log replay. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/tree-log.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index c7ef569..451fad9 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -1382,7 +1382,10 @@ static noinline int link_to_fixup_dir(struct btrfs_trans_handle *trans, btrfs_release_path(path); if (ret == 0) { - btrfs_inc_nlink(inode); + if (!inode->i_nlink) + set_nlink(inode, 1); + else + btrfs_inc_nlink(inode); ret = btrfs_update_inode(trans, root, inode); } else if (ret == -EEXIST) { ret = 0; -- cgit v1.1 From aec8030a8745221c8658f2033b22c98528897b13 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Mon, 4 Mar 2013 09:44:29 +0000 Subject: Btrfs: fix wrong handle at error path of create_snapshot() when the commit fails There are several bugs at error path of create_snapshot() when the transaction commitment failed. - access the freed transaction handler. At the end of the transaction commitment, the transaction handler was freed, so we should not access it after the transaction commitment. - we were not aware of the error which happened during the snapshot creation if we submitted a async transaction commitment. - pending snapshot access vs pending snapshot free. when something wrong happened after we submitted a async transaction commitment, the transaction committer would cleanup the pending snapshots and free them. But the snapshot creators were not aware of it, they would access the freed pending snapshots. This patch fixes the above problems by: - remove the dangerous code that accessed the freed handler - assign ->error if the error happens during the snapshot creation - the transaction committer doesn't free the pending snapshots, just assigns the error number and evicts them before we unblock the transaction. Reported-by: Dan Carpenter Signed-off-by: Miao Xie Signed-off-by: Josef Bacik --- fs/btrfs/disk-io.c | 16 ++++++-------- fs/btrfs/ioctl.c | 6 +----- fs/btrfs/transaction.c | 58 ++++++++++++++++++++++++++++---------------------- 3 files changed, 41 insertions(+), 39 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 02369a3..7d84651 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -62,7 +62,7 @@ static void btrfs_destroy_ordered_operations(struct btrfs_transaction *t, static void btrfs_destroy_ordered_extents(struct btrfs_root *root); static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans, struct btrfs_root *root); -static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t); +static void btrfs_evict_pending_snapshots(struct btrfs_transaction *t); static void btrfs_destroy_delalloc_inodes(struct btrfs_root *root); static int btrfs_destroy_marked_extents(struct btrfs_root *root, struct extent_io_tree *dirty_pages, @@ -3687,7 +3687,7 @@ int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans, return ret; } -static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t) +static void btrfs_evict_pending_snapshots(struct btrfs_transaction *t) { struct btrfs_pending_snapshot *snapshot; struct list_head splice; @@ -3700,10 +3700,8 @@ static void btrfs_destroy_pending_snapshots(struct btrfs_transaction *t) snapshot = list_entry(splice.next, struct btrfs_pending_snapshot, list); - + snapshot->error = -ECANCELED; list_del_init(&snapshot->list); - - kfree(snapshot); } } @@ -3840,6 +3838,8 @@ void btrfs_cleanup_one_transaction(struct btrfs_transaction *cur_trans, cur_trans->blocked = 1; wake_up(&root->fs_info->transaction_blocked_wait); + btrfs_evict_pending_snapshots(cur_trans); + cur_trans->blocked = 0; wake_up(&root->fs_info->transaction_wait); @@ -3849,8 +3849,6 @@ void btrfs_cleanup_one_transaction(struct btrfs_transaction *cur_trans, btrfs_destroy_delayed_inodes(root); btrfs_assert_delayed_root_empty(root); - btrfs_destroy_pending_snapshots(cur_trans); - btrfs_destroy_marked_extents(root, &cur_trans->dirty_pages, EXTENT_DIRTY); btrfs_destroy_pinned_extent(root, @@ -3894,6 +3892,8 @@ int btrfs_cleanup_transaction(struct btrfs_root *root) if (waitqueue_active(&root->fs_info->transaction_blocked_wait)) wake_up(&root->fs_info->transaction_blocked_wait); + btrfs_evict_pending_snapshots(t); + t->blocked = 0; smp_mb(); if (waitqueue_active(&root->fs_info->transaction_wait)) @@ -3907,8 +3907,6 @@ int btrfs_cleanup_transaction(struct btrfs_root *root) btrfs_destroy_delayed_inodes(root); btrfs_assert_delayed_root_empty(root); - btrfs_destroy_pending_snapshots(t); - btrfs_destroy_delalloc_inodes(root); spin_lock(&root->fs_info->trans_lock); diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index b908960..94c0e42 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -596,12 +596,8 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, ret = btrfs_commit_transaction(trans, root->fs_info->extent_root); } - if (ret) { - /* cleanup_transaction has freed this for us */ - if (trans->aborted) - pending_snapshot = NULL; + if (ret) goto fail; - } ret = pending_snapshot->error; if (ret) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index f11c2e0..d8fce6f 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1053,7 +1053,12 @@ int btrfs_defrag_root(struct btrfs_root *root) /* * new snapshots need to be created at a very specific time in the - * transaction commit. This does the actual creation + * transaction commit. This does the actual creation. + * + * Note: + * If the error which may affect the commitment of the current transaction + * happens, we should return the error number. If the error which just affect + * the creation of the pending snapshots, just return 0. */ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info, @@ -1072,7 +1077,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, struct extent_buffer *tmp; struct extent_buffer *old; struct timespec cur_time = CURRENT_TIME; - int ret; + int ret = 0; u64 to_reserve = 0; u64 index = 0; u64 objectid; @@ -1081,40 +1086,36 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, path = btrfs_alloc_path(); if (!path) { - ret = pending->error = -ENOMEM; - return ret; + pending->error = -ENOMEM; + return 0; } new_root_item = kmalloc(sizeof(*new_root_item), GFP_NOFS); if (!new_root_item) { - ret = pending->error = -ENOMEM; + pending->error = -ENOMEM; goto root_item_alloc_fail; } - ret = btrfs_find_free_objectid(tree_root, &objectid); - if (ret) { - pending->error = ret; + pending->error = btrfs_find_free_objectid(tree_root, &objectid); + if (pending->error) goto no_free_objectid; - } btrfs_reloc_pre_snapshot(trans, pending, &to_reserve); if (to_reserve > 0) { - ret = btrfs_block_rsv_add(root, &pending->block_rsv, - to_reserve, - BTRFS_RESERVE_NO_FLUSH); - if (ret) { - pending->error = ret; + pending->error = btrfs_block_rsv_add(root, + &pending->block_rsv, + to_reserve, + BTRFS_RESERVE_NO_FLUSH); + if (pending->error) goto no_free_objectid; - } } - ret = btrfs_qgroup_inherit(trans, fs_info, root->root_key.objectid, - objectid, pending->inherit); - if (ret) { - pending->error = ret; + pending->error = btrfs_qgroup_inherit(trans, fs_info, + root->root_key.objectid, + objectid, pending->inherit); + if (pending->error) goto no_free_objectid; - } key.objectid = objectid; key.offset = (u64)-1; @@ -1142,7 +1143,7 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, dentry->d_name.len, 0); if (dir_item != NULL && !IS_ERR(dir_item)) { pending->error = -EEXIST; - goto fail; + goto dir_item_existed; } else if (IS_ERR(dir_item)) { ret = PTR_ERR(dir_item); btrfs_abort_transaction(trans, root, ret); @@ -1273,6 +1274,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans, if (ret) btrfs_abort_transaction(trans, root, ret); fail: + pending->error = ret; +dir_item_existed: trans->block_rsv = rsv; trans->bytes_reserved = 0; no_free_objectid: @@ -1288,12 +1291,17 @@ root_item_alloc_fail: static noinline int create_pending_snapshots(struct btrfs_trans_handle *trans, struct btrfs_fs_info *fs_info) { - struct btrfs_pending_snapshot *pending; + struct btrfs_pending_snapshot *pending, *next; struct list_head *head = &trans->transaction->pending_snapshots; + int ret = 0; - list_for_each_entry(pending, head, list) - create_pending_snapshot(trans, fs_info, pending); - return 0; + list_for_each_entry_safe(pending, next, head, list) { + list_del(&pending->list); + ret = create_pending_snapshot(trans, fs_info, pending); + if (ret) + break; + } + return ret; } static void update_super_roots(struct btrfs_root *root) -- cgit v1.1 From 00d71c9c17b1fd28fa54f323a29a0e23c6d3de40 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Mon, 4 Mar 2013 09:45:06 +0000 Subject: Btrfs: fix unclosed transaction handler when the async transaction commitment fails If the async transaction commitment failed, we need close the current transaction handler, or the current transaction will be blocked to commit because of this orphan handler. We fix the problem by doing sync transaction commitment, that is to invoke btrfs_commit_transaction(). Signed-off-by: Miao Xie Signed-off-by: Josef Bacik --- fs/btrfs/ioctl.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 94c0e42..3fdfabc 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -527,6 +527,8 @@ fail: if (async_transid) { *async_transid = trans->transid; err = btrfs_commit_transaction_async(trans, root, 1); + if (err) + err = btrfs_commit_transaction(trans, root); } else { err = btrfs_commit_transaction(trans, root); } @@ -592,6 +594,8 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, *async_transid = trans->transid; ret = btrfs_commit_transaction_async(trans, root->fs_info->extent_root, 1); + if (ret) + ret = btrfs_commit_transaction(trans, root); } else { ret = btrfs_commit_transaction(trans, root->fs_info->extent_root); -- cgit v1.1 From 8f71f3e0e4fb5a2445fb93d3057a33aefc4aa30d Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:36 +0000 Subject: Btrfs: check for NULL pointer in updating reloc roots Add a check for NULL pointer to avoid invalid reference. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index ba5a321..16e0c6f 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1269,6 +1269,8 @@ static int __update_reloc_root(struct btrfs_root *root, int del) } spin_unlock(&rc->reloc_root_tree.lock); + if (!node) + return 0; BUG_ON((struct btrfs_root *)node->data != root); if (!del) { -- cgit v1.1 From aca1bba6f9bc550a33312b28e98b3de5ddb3bb15 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:37 +0000 Subject: Btrfs: build up error handling for merge_reloc_roots We first use btrfs_std_error hook to replace with BUG_ON, and we also need to cleanup what is left, including reloc roots rbtree and reloc roots list. Here we use a helper function to cleanup both rbtree and list, and since this function can also be used in the balance recover path, we also make the change as well to keep code simple. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 47 +++++++++++++++++++++++++++++++++++------------ 1 file changed, 35 insertions(+), 12 deletions(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 16e0c6f..0f001c1 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -2240,13 +2240,28 @@ again: } static noinline_for_stack +void free_reloc_roots(struct list_head *list) +{ + struct btrfs_root *reloc_root; + + while (!list_empty(list)) { + reloc_root = list_entry(list->next, struct btrfs_root, + root_list); + __update_reloc_root(reloc_root, 1); + free_extent_buffer(reloc_root->node); + free_extent_buffer(reloc_root->commit_root); + kfree(reloc_root); + } +} + +static noinline_for_stack int merge_reloc_roots(struct reloc_control *rc) { struct btrfs_root *root; struct btrfs_root *reloc_root; LIST_HEAD(reloc_roots); int found = 0; - int ret; + int ret = 0; again: root = rc->extent_root; @@ -2272,20 +2287,33 @@ again: BUG_ON(root->reloc_root != reloc_root); ret = merge_reloc_root(rc, root); - BUG_ON(ret); + if (ret) + goto out; } else { list_del_init(&reloc_root->root_list); } ret = btrfs_drop_snapshot(reloc_root, rc->block_rsv, 0, 1); - BUG_ON(ret < 0); + if (ret < 0) { + if (list_empty(&reloc_root->root_list)) + list_add_tail(&reloc_root->root_list, + &reloc_roots); + goto out; + } } if (found) { found = 0; goto again; } +out: + if (ret) { + btrfs_std_error(root->fs_info, ret); + if (!list_empty(&reloc_roots)) + free_reloc_roots(&reloc_roots); + } + BUG_ON(!RB_EMPTY_ROOT(&rc->reloc_root_tree.rb_root)); - return 0; + return ret; } static void free_block_list(struct rb_root *blocks) @@ -4266,14 +4294,9 @@ int btrfs_recover_relocation(struct btrfs_root *root) out_free: kfree(rc); out: - while (!list_empty(&reloc_roots)) { - reloc_root = list_entry(reloc_roots.next, - struct btrfs_root, root_list); - list_del(&reloc_root->root_list); - free_extent_buffer(reloc_root->node); - free_extent_buffer(reloc_root->commit_root); - kfree(reloc_root); - } + if (!list_empty(&reloc_roots)) + free_reloc_roots(&reloc_roots); + btrfs_free_path(path); if (err == 0) { -- cgit v1.1 From e1a1267054ea9dcafd01636e52d441f809efad5e Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:38 +0000 Subject: Btrfs: free all recorded tree blocks on error We've missed the 'free blocks' part on ENOMEM error. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 0f001c1..7d1654c 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -2848,8 +2848,10 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans, int err = 0; path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; + if (!path) { + err = -ENOMEM; + goto out_path; + } rb_node = rb_first(blocks); while (rb_node) { @@ -2888,10 +2890,11 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans, rb_node = rb_next(rb_node); } out: - free_block_list(blocks); err = finish_pending_nodes(trans, rc, path, err); btrfs_free_path(path); +out_path: + free_block_list(blocks); return err; } -- cgit v1.1 From 288189471d7e12fb22c37870e151833f438deea8 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:39 +0000 Subject: Btrfs: do not BUG_ON in prepare_to_reloc We can bail out from here gracefully instead of a cold BUG_ON. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 7d1654c..9d13786 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3731,7 +3731,15 @@ int prepare_to_relocate(struct reloc_control *rc) set_reloc_control(rc); trans = btrfs_join_transaction(rc->extent_root); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + unset_reloc_control(rc); + /* + * extent tree is not a ref_cow tree and has no reloc_root to + * cleanup. And callers are responsible to free the above + * block rsv. + */ + return PTR_ERR(trans); + } btrfs_commit_transaction(trans, rc->extent_root); return 0; } -- cgit v1.1 From 0f788c58194e4ccc5b3ab23f872c5e18542335e4 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:40 +0000 Subject: Btrfs: do not BUG_ON on aborted situation Btrfs balance can easily hit BUG_ON in these places, but we want to it bail out gracefully after we force the whole filesystem to readonly. So we use btrfs_std_error hook in place of BUG_ON. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/relocation.c | 6 +++++- fs/btrfs/volumes.c | 9 +++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 9d13786..3ebe8797 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3771,7 +3771,11 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc) while (1) { progress++; trans = btrfs_start_transaction(rc->extent_root, 0); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + err = PTR_ERR(trans); + trans = NULL; + break; + } restart: if (update_backref_cache(trans, &rc->backref_cache)) { btrfs_end_transaction(trans, rc->extent_root); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 35bb2d4..9ff454d 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2379,7 +2379,11 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, return ret; trans = btrfs_start_transaction(root, 0); - BUG_ON(IS_ERR(trans)); + if (IS_ERR(trans)) { + ret = PTR_ERR(trans); + btrfs_std_error(root->fs_info, ret); + return ret; + } lock_chunks(root); @@ -3050,7 +3054,8 @@ static void __cancel_balance(struct btrfs_fs_info *fs_info) unset_balance_control(fs_info); ret = del_balance_item(fs_info->tree_root); - BUG_ON(ret); + if (ret) + btrfs_std_error(fs_info, ret); atomic_set(&fs_info->mutually_exclusive_operation_running, 0); } -- cgit v1.1 From 66b6135b7cf741f6f44ba938b27583ea3b83bd12 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 4 Mar 2013 16:25:41 +0000 Subject: Btrfs: avoid deadlock on transaction waiting list Only let one trans handle to wait for other handles, otherwise we will get ABBA issues. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik --- fs/btrfs/transaction.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index d8fce6f..fedede1 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -1457,6 +1457,13 @@ static void cleanup_transaction(struct btrfs_trans_handle *trans, btrfs_abort_transaction(trans, root, err); spin_lock(&root->fs_info->trans_lock); + + if (list_empty(&cur_trans->list)) { + spin_unlock(&root->fs_info->trans_lock); + btrfs_end_transaction(trans, root); + return; + } + list_del_init(&cur_trans->list); if (cur_trans == root->fs_info->running_transaction) { root->fs_info->trans_no_join = 1; -- cgit v1.1 From 9b53157aac7366cea413ee29b629f83225829e87 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Mon, 4 Mar 2013 17:28:38 +0000 Subject: Btrfs: allow running defrag in parallel to administrative tasks Commit 5ac00add added a testnset mutex and code that disallows running administrative tasks in parallel. It is prevented that the device add/delete/balance/replace/resize operations are started in parallel. By mistake, the defragmentation operation was included in the check for mutually exclusiveness as well. This is fixed with this commit. Signed-off-by: Stefan Behrens Signed-off-by: Josef Bacik --- fs/btrfs/ioctl.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 3fdfabc..898c572 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2245,13 +2245,6 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp) if (ret) return ret; - if (atomic_xchg(&root->fs_info->mutually_exclusive_operation_running, - 1)) { - pr_info("btrfs: dev add/delete/balance/replace/resize operation in progress\n"); - mnt_drop_write_file(file); - return -EINVAL; - } - if (btrfs_root_readonly(root)) { ret = -EROFS; goto out; @@ -2306,7 +2299,6 @@ static int btrfs_ioctl_defrag(struct file *file, void __user *argp) ret = -EINVAL; } out: - atomic_set(&root->fs_info->mutually_exclusive_operation_running, 0); mnt_drop_write_file(file); return ret; } -- cgit v1.1 From 79e7654cae5a6d6cee333f0366023ecc3ff8abe0 Mon Sep 17 00:00:00 2001 From: Andrew Brownfield Date: Thu, 21 Feb 2013 14:01:50 -0500 Subject: ata_piix: Add MODULE_PARM_DESC to prefer_ms_hyperv In reference to the commit cd006086fa5d91414d8ff9ff2b78fbb593878e3c "ata_piix: defer disks to the Hyper-V drivers by default", this trivial patch adds a description to prefer_ms_hyperv. [rvrbovsk@redhat.com: MODULE_PARM_DESC() string formatting modified] Signed-off-by: Andrew Brownfield Signed-off-by: Radomir Vrbovsky Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index d2ba439..ffdd32d 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -1547,6 +1547,10 @@ static bool piix_broken_system_poweroff(struct pci_dev *pdev) static int prefer_ms_hyperv = 1; module_param(prefer_ms_hyperv, int, 0); +MODULE_PARM_DESC(prefer_ms_hyperv, + "Prefer Hyper-V paravirtualization drivers instead of ATA, " + "0 - Use ATA drivers, " + "1 (Default) - Use the paravirtualization drivers."); static void piix_ignore_devices_quirk(struct ata_host *host) { -- cgit v1.1 From efda332cb66d78d6fdf6f98e7b067480f43624f2 Mon Sep 17 00:00:00 2001 From: James Ralston Date: Thu, 21 Feb 2013 11:08:51 -0800 Subject: ahci: Add Device IDs for Intel Wellsburg PCH This patch adds the RAID-mode SATA Device IDs for the Intel Wellsburg PCH Signed-off-by: James Ralston Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index a99112c..6a67b07 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -281,6 +281,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { { PCI_VDEVICE(INTEL, 0x1f37), board_ahci }, /* Avoton RAID */ { PCI_VDEVICE(INTEL, 0x1f3e), board_ahci }, /* Avoton RAID */ { PCI_VDEVICE(INTEL, 0x1f3f), board_ahci }, /* Avoton RAID */ + { PCI_VDEVICE(INTEL, 0x2823), board_ahci }, /* Wellsburg RAID */ + { PCI_VDEVICE(INTEL, 0x2827), board_ahci }, /* Wellsburg RAID */ { PCI_VDEVICE(INTEL, 0x8d02), board_ahci }, /* Wellsburg AHCI */ { PCI_VDEVICE(INTEL, 0x8d04), board_ahci }, /* Wellsburg RAID */ { PCI_VDEVICE(INTEL, 0x8d06), board_ahci }, /* Wellsburg RAID */ -- cgit v1.1 From c99cc9a2f19c29108ddb2e1ceb6f3baa536357d2 Mon Sep 17 00:00:00 2001 From: Syam Sidhardhan Date: Mon, 25 Feb 2013 04:44:07 +0530 Subject: sata_fsl: Remove redundant NULL check before kfree kfree on NULL pointer is a no-op. Signed-off-by: Syam Sidhardhan Signed-off-by: Jeff Garzik --- drivers/ata/sata_fsl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/ata/sata_fsl.c b/drivers/ata/sata_fsl.c index 124b2c1..608f82f 100644 --- a/drivers/ata/sata_fsl.c +++ b/drivers/ata/sata_fsl.c @@ -1511,8 +1511,7 @@ error_exit_with_cleanup: if (hcr_base) iounmap(hcr_base); - if (host_priv) - kfree(host_priv); + kfree(host_priv); return retval; } -- cgit v1.1 From dfd573644ce4ba1c9fbd625512bcfccf8c5ce7ff Mon Sep 17 00:00:00 2001 From: Sander Eikelenboom Date: Fri, 1 Mar 2013 12:16:42 +0100 Subject: libata-acpi.c: fix copy and paste mistake in ata_acpi_register_power_resource Fix a copy and paste mistake introduced in: commit bc9b6407bd6df3ab7189e5622816bbc11ae9d2d8 "ACPI / PM: Rework the handling of devices depending on power resources" Signed-off-by: Sander Eikelenboom Signed-off-by: Jeff Garzik --- drivers/ata/libata-acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 0ea1018..cb3eab6d 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -1027,7 +1027,7 @@ static void ata_acpi_register_power_resource(struct ata_device *dev) handle = ata_dev_acpi_handle(dev); if (handle) - acpi_dev_pm_remove_dependent(handle, &sdev->sdev_gendev); + acpi_dev_pm_add_dependent(handle, &sdev->sdev_gendev); } static void ata_acpi_unregister_power_resource(struct ata_device *dev) -- cgit v1.1 From e189551bf74f098bde39cb8fb72a722bb7286f99 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Sat, 2 Mar 2013 13:00:37 +0800 Subject: [libata] Avoid specialized TLA's in ZPODD's Kconfig ODD is not a common TLA for non-ATA people so they will get confused by its meaning when they are configuring the kernel. This patch fixed this problem by using ODD only after stating what it is. Signed-off-by: Aaron Lu Signed-off-by: Jeff Garzik --- drivers/ata/Kconfig | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 3e751b7..a5a3ebc 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -59,15 +59,16 @@ config ATA_ACPI option libata.noacpi=1 config SATA_ZPODD - bool "SATA Zero Power ODD Support" + bool "SATA Zero Power Optical Disc Drive (ZPODD) support" depends on ATA_ACPI default n help - This option adds support for SATA ZPODD. It requires both - ODD and the platform support, and if enabled, will automatically - power on/off the ODD when certain condition is satisfied. This - does not impact user's experience of the ODD, only power is saved - when ODD is not in use(i.e. no disc inside). + This option adds support for SATA Zero Power Optical Disc + Drive (ZPODD). It requires both the ODD and the platform + support, and if enabled, will automatically power on/off the + ODD when certain condition is satisfied. This does not impact + end user's experience of the ODD, only power is saved when + the ODD is not in use (i.e. no disc inside). If unsure, say N. -- cgit v1.1 From b186affe0c9d39e4d3152cd34bffea8fe1fa17f4 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Mon, 4 Mar 2013 17:34:42 +0900 Subject: pata_samsung_cf: use module_platform_driver_probe() This patch uses module_platform_driver_probe() macro which makes the code smaller and simpler. Signed-off-by: Jingoo Han Signed-off-by: Jeff Garzik --- drivers/ata/pata_samsung_cf.c | 13 +------------ 1 file changed, 1 insertion(+), 12 deletions(-) diff --git a/drivers/ata/pata_samsung_cf.c b/drivers/ata/pata_samsung_cf.c index 70b0e01..6ef27e9 100644 --- a/drivers/ata/pata_samsung_cf.c +++ b/drivers/ata/pata_samsung_cf.c @@ -661,18 +661,7 @@ static struct platform_driver pata_s3c_driver = { }, }; -static int __init pata_s3c_init(void) -{ - return platform_driver_probe(&pata_s3c_driver, pata_s3c_probe); -} - -static void __exit pata_s3c_exit(void) -{ - platform_driver_unregister(&pata_s3c_driver); -} - -module_init(pata_s3c_init); -module_exit(pata_s3c_exit); +module_platform_driver_probe(pata_s3c_driver, pata_s3c_probe); MODULE_AUTHOR("Abhilash Kesavan, "); MODULE_DESCRIPTION("low-level driver for Samsung PATA controller"); -- cgit v1.1 From f7f154f1246ccc5a0a7e9ce50932627d60a0c878 Mon Sep 17 00:00:00 2001 From: Rusty Russell Date: Tue, 5 Mar 2013 10:07:08 +1030 Subject: hw_random: make buffer usable in scatterlist. virtio_rng feeds the randomness buffer handed by the core directly into the scatterlist, since commit bb347d98079a547e80bd4722dee1de61e4dca0e8. However, if CONFIG_HW_RANDOM=m, the static buffer isn't a linear address (at least on most archs). We could fix this in virtio_rng, but it's actually far easier to just do it in the core as virtio_rng would have to allocate a buffer every time (it doesn't know how much the core will want to read). Reported-by: Aurelien Jarno Tested-by: Aurelien Jarno Signed-off-by: Rusty Russell Cc: stable@kernel.org --- drivers/char/hw_random/core.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 1bafb40..69ae597 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -40,6 +40,7 @@ #include #include #include +#include #include @@ -52,8 +53,12 @@ static struct hwrng *current_rng; static LIST_HEAD(rng_list); static DEFINE_MUTEX(rng_mutex); static int data_avail; -static u8 rng_buffer[SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES] - __cacheline_aligned; +static u8 *rng_buffer; + +static size_t rng_buffer_size(void) +{ + return SMP_CACHE_BYTES < 32 ? 32 : SMP_CACHE_BYTES; +} static inline int hwrng_init(struct hwrng *rng) { @@ -116,7 +121,7 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf, if (!data_avail) { bytes_read = rng_get_data(current_rng, rng_buffer, - sizeof(rng_buffer), + rng_buffer_size(), !(filp->f_flags & O_NONBLOCK)); if (bytes_read < 0) { err = bytes_read; @@ -307,6 +312,14 @@ int hwrng_register(struct hwrng *rng) mutex_lock(&rng_mutex); + /* kmalloc makes this safe for virt_to_page() in virtio_rng.c */ + err = -ENOMEM; + if (!rng_buffer) { + rng_buffer = kmalloc(rng_buffer_size(), GFP_KERNEL); + if (!rng_buffer) + goto out_unlock; + } + /* Must not register two RNGs with the same name. */ err = -EEXIST; list_for_each_entry(tmp, &rng_list, list) { -- cgit v1.1 From 6402c796d3b4205d3d7296157956c5100a05d7d6 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 1 Mar 2013 10:50:08 -0500 Subject: USB: EHCI: work around silicon bug in Intel's EHCI controllers This patch (as1660) works around a hardware problem present in some (if not all) Intel EHCI controllers. After a QH has been unlinked from the async schedule and the corresponding IAA interrupt has occurred, the controller is not supposed access the QH and its qTDs. There certainly shouldn't be any more DMA writes to those structures. Nevertheless, Intel's controllers have been observed to perform a final writeback to the QH's overlay region and to the most recent qTD. For more information and a test program to determine whether this problem is present in a particular controller, see http://marc.info/?l=linux-usb&m=135492071812265&w=2 http://marc.info/?l=linux-usb&m=136182570800963&w=2 This patch works around the problem by always waiting for two IAA cycles when unlinking an async QH. The extra IAA delay gives the controller time to perform its final writeback. Surprisingly enough, the effects of this silicon bug have gone undetected until quite recently. More through luck than anything else, it hasn't caused any apparent problems. However, it does interact badly with the path that follows this one, so it needs to be addressed. This is the first part of a fix for the regression reported at: https://bugs.launchpad.net/bugs/1088733 Signed-off-by: Alan Stern Tested-by: Stephen Thirlwall CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 6 ++---- drivers/usb/host/ehci-q.c | 18 ++++++++++++++---- 2 files changed, 16 insertions(+), 8 deletions(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index b416a3f..5726cb1 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -748,11 +748,9 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) /* guard against (alleged) silicon errata */ if (cmd & CMD_IAAD) ehci_dbg(ehci, "IAA with IAAD still set?\n"); - if (ehci->async_iaa) { + if (ehci->async_iaa) COUNT(ehci->stats.iaa); - end_unlink_async(ehci); - } else - ehci_dbg(ehci, "IAA with nothing unlinked?\n"); + end_unlink_async(ehci); } /* remote wakeup [4.3.1] */ diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index fd252f0..7bf2b4e 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -1170,7 +1170,7 @@ static void single_unlink_async(struct ehci_hcd *ehci, struct ehci_qh *qh) struct ehci_qh *prev; /* Add to the end of the list of QHs waiting for the next IAAD */ - qh->qh_state = QH_STATE_UNLINK; + qh->qh_state = QH_STATE_UNLINK_WAIT; if (ehci->async_unlink) ehci->async_unlink_last->unlink_next = qh; else @@ -1213,9 +1213,19 @@ static void start_iaa_cycle(struct ehci_hcd *ehci, bool nested) /* Do only the first waiting QH (nVidia bug?) */ qh = ehci->async_unlink; - ehci->async_iaa = qh; - ehci->async_unlink = qh->unlink_next; - qh->unlink_next = NULL; + + /* + * Intel (?) bug: The HC can write back the overlay region + * even after the IAA interrupt occurs. In self-defense, + * always go through two IAA cycles for each QH. + */ + if (qh->qh_state == QH_STATE_UNLINK_WAIT) { + qh->qh_state = QH_STATE_UNLINK; + } else { + ehci->async_iaa = qh; + ehci->async_unlink = qh->unlink_next; + qh->unlink_next = NULL; + } /* Make sure the unlinks are all visible to the hardware */ wmb(); -- cgit v1.1 From feca7746d5d9e84b105a613b7f3b6ad00d327372 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 1 Mar 2013 10:51:15 -0500 Subject: USB: EHCI: don't check DMA values in QH overlays This patch (as1661) fixes a rather obscure bug in ehci-hcd. In a couple of places, the driver compares the DMA address stored in a QH's overlay region with the address of a particular qTD, in order to see whether that qTD is the one currently being processed by the hardware. (If it is then the status in the QH's overlay region is more up-to-date than the status in the qTD, and if it isn't then the overlay's value needs to be adjusted when the QH is added back to the active schedule.) However, DMA address in the overlay region isn't always valid. It sometimes will contain a stale value, which may happen by coincidence to be equal to a qTD's DMA address. Instead of checking the DMA address, we should check whether the overlay region is active and valid. The patch tests the ACTIVE bit in the overlay, and clears this bit when the overlay becomes invalid (which happens when the currently-executing URB is unlinked). This is the second part of a fix for the regression reported at: https://bugs.launchpad.net/bugs/1088733 Signed-off-by: Alan Stern Reported-by: Joseph Salisbury Reported-and-tested-by: Stephen Thirlwall CC: Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-q.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 7bf2b4e..5464665 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -135,7 +135,7 @@ qh_refresh (struct ehci_hcd *ehci, struct ehci_qh *qh) * qtd is updated in qh_completions(). Update the QH * overlay here. */ - if (cpu_to_hc32(ehci, qtd->qtd_dma) == qh->hw->hw_current) { + if (qh->hw->hw_token & ACTIVE_BIT(ehci)) { qh->hw->hw_qtd_next = qtd->hw_next; qtd = NULL; } @@ -449,11 +449,19 @@ qh_completions (struct ehci_hcd *ehci, struct ehci_qh *qh) else if (last_status == -EINPROGRESS && !urb->unlinked) continue; - /* qh unlinked; token in overlay may be most current */ - if (state == QH_STATE_IDLE - && cpu_to_hc32(ehci, qtd->qtd_dma) - == hw->hw_current) { + /* + * If this was the active qtd when the qh was unlinked + * and the overlay's token is active, then the overlay + * hasn't been written back to the qtd yet so use its + * token instead of the qtd's. After the qtd is + * processed and removed, the overlay won't be valid + * any more. + */ + if (state == QH_STATE_IDLE && + qh->qtd_list.next == &qtd->qtd_list && + (hw->hw_token & ACTIVE_BIT(ehci))) { token = hc32_to_cpu(ehci, hw->hw_token); + hw->hw_token &= ~ACTIVE_BIT(ehci); /* An unlink may leave an incomplete * async transaction in the TT buffer. -- cgit v1.1 From 91bdf0d0c48c9254fb73037bfb8ee1777093225b Mon Sep 17 00:00:00 2001 From: Javi Merino Date: Tue, 19 Feb 2013 13:52:22 +0000 Subject: irqchip: fix typo when moving gic_raise_softirq() In b1cffebf (ARM: GIC: remove direct use of gic_raise_softirq) gic_raise_softirq() was moved inside arch/arm/common/gic.c but in the process it reverted by mistake a change to that function made by 384a290 (ARM: gic: use a private mapping for CPU target interfaces). This breaks multicluster systems on ARM. This patch fixes the typo. Signed-off-by: Javi Merino Acked-by: Rob Herring Signed-off-by: Olof Johansson --- drivers/irqchip/irq-gic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 644d724..a32e0d5 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -648,7 +648,7 @@ void gic_raise_softirq(const struct cpumask *mask, unsigned int irq) /* Convert our logical CPU mask into a physical one. */ for_each_cpu(cpu, mask) - map |= 1 << cpu_logical_map(cpu); + map |= gic_cpu_map[cpu]; /* * Ensure that stores to Normal memory are visible to the -- cgit v1.1 From 2837a1d4161caec7dffefa03505b87f056c1f5bb Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Thu, 21 Feb 2013 22:42:38 -0700 Subject: ARM: bcm2835: fix I2C module clock rate BCM2835-ARM-Peripherals.pdf states that the I2C module's input clock is nominally 150MHz, and that value is currently reflected in bcm2835.dtsi. However, practical measurements show that the rate is actually 250MHz, and this agrees with various downstream kernels. Switch the I2C clock's frequency to 250MHz so that the generated bus clock rate is accurate. Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson --- arch/arm/boot/dts/bcm2835.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi index 4bf2a87..7e0481e 100644 --- a/arch/arm/boot/dts/bcm2835.dtsi +++ b/arch/arm/boot/dts/bcm2835.dtsi @@ -105,7 +105,7 @@ compatible = "fixed-clock"; reg = <1>; #clock-cells = <0>; - clock-frequency = <150000000>; + clock-frequency = <250000000>; }; }; }; -- cgit v1.1 From 9e25fe6b339f5d66cc4d1f3723d5246bf727586d Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Tue, 22 Jan 2013 15:27:29 -0600 Subject: ARM: dts: remove generated .dtb files on clean commit 5f300acd8ae9f3d4585154370012ffc5c665330f (ARM: 7152/1: distclean: Remove generated .dtb files) ensured that dtbs were cleaned up when they were in arch/arm/boot. However, with the following commit: commit 499cd8298628eeabf0eb5eb6525d4faa0eec80d8 (ARM: dt: change .dtb build rules to build in dts directory) make clean now leaves dtbs in arch/arm/boot/dts/ untouched. Include dts directory so that clean-files rule from arch/arm/boot/dts/Makefile is invoked when make clean is done. Cc: Dirk Behme CC: Grant Likely Signed-off-by: Nishanth Menon Signed-off-by: Olof Johansson --- arch/arm/boot/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile index 71768b8..84aa2ca 100644 --- a/arch/arm/boot/Makefile +++ b/arch/arm/boot/Makefile @@ -115,4 +115,4 @@ i: $(CONFIG_SHELL) $(srctree)/$(src)/install.sh $(KERNELRELEASE) \ $(obj)/Image System.map "$(INSTALL_PATH)" -subdir- := bootp compressed +subdir- := bootp compressed dts -- cgit v1.1 From ed3ced371146f0993f0e4f315720449d78dc7032 Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 1 Mar 2013 11:32:24 -0700 Subject: ARM: Tegra: Add clock entry for smp_twd clock As DT support for clocks and smp_twd is enabled, add clock entry for smp_twd clock to DT. This fixes the following error while booting the kernel: smp_twd: clock not found -2 Signed-off-by: Prashant Gaikwad [swarren: include kernel log spew that this fixes] Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson --- arch/arm/boot/dts/tegra20.dtsi | 1 + arch/arm/boot/dts/tegra30.dtsi | 1 + 2 files changed, 2 insertions(+) diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index 9a42893..48d00a0 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -118,6 +118,7 @@ compatible = "arm,cortex-a9-twd-timer"; reg = <0x50040600 0x20>; interrupts = <1 13 0x304>; + clocks = <&tegra_car 132>; }; intc: interrupt-controller { diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index 767803e..9d87a3f 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -119,6 +119,7 @@ compatible = "arm,cortex-a9-twd-timer"; reg = <0x50040600 0x20>; interrupts = <1 13 0xf04>; + clocks = <&tegra_car 214>; }; intc: interrupt-controller { -- cgit v1.1 From 984b839337da1eb7b4a4fb50e24cf28c2b473862 Mon Sep 17 00:00:00 2001 From: Prashant Gaikwad Date: Fri, 1 Mar 2013 11:32:25 -0700 Subject: clk: Tegra: Remove duplicate smp_twd clock Remove duplicate smp_twd clocks as these clocks are accessed using DT now. Signed-off-by: Prashant Gaikwad Signed-off-by: Stephen Warren Signed-off-by: Olof Johansson --- drivers/clk/tegra/clk-tegra20.c | 1 - drivers/clk/tegra/clk-tegra30.c | 1 - 2 files changed, 2 deletions(-) diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c index 143ce1f..1e2de73 100644 --- a/drivers/clk/tegra/clk-tegra20.c +++ b/drivers/clk/tegra/clk-tegra20.c @@ -1292,7 +1292,6 @@ static struct tegra_clk_duplicate tegra_clk_duplicates[] = { TEGRA_CLK_DUPLICATE(usbd, "tegra-ehci.0", NULL), TEGRA_CLK_DUPLICATE(usbd, "tegra-otg", NULL), TEGRA_CLK_DUPLICATE(cclk, NULL, "cpu"), - TEGRA_CLK_DUPLICATE(twd, "smp_twd", NULL), TEGRA_CLK_DUPLICATE(clk_max, NULL, NULL), /* Must be the last entry */ }; diff --git a/drivers/clk/tegra/clk-tegra30.c b/drivers/clk/tegra/clk-tegra30.c index 32c61cb..ba6f51b 100644 --- a/drivers/clk/tegra/clk-tegra30.c +++ b/drivers/clk/tegra/clk-tegra30.c @@ -1931,7 +1931,6 @@ static struct tegra_clk_duplicate tegra_clk_duplicates[] = { TEGRA_CLK_DUPLICATE(cml1, "tegra_sata_cml", NULL), TEGRA_CLK_DUPLICATE(cml0, "tegra_pcie", "cml"), TEGRA_CLK_DUPLICATE(pciex, "tegra_pcie", "pciex"), - TEGRA_CLK_DUPLICATE(twd, "smp_twd", NULL), TEGRA_CLK_DUPLICATE(vcp, "nvavp", "vcp"), TEGRA_CLK_DUPLICATE(clk_max, NULL, NULL), /* MUST be the last entry */ }; -- cgit v1.1 From b83e831a3c2d358fea4bf8fa13f387405f2880b6 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 5 Mar 2013 11:08:47 +0900 Subject: ARM: S5PV210: Fix PL330 DMA controller clkdev entries Since the DMA controller clocks are managed at amba bus level, the PL330 device clocks handling has been removed from the driver in commit 7c71b8eb("DMA: PL330: Remove redundant runtime_suspend/ resume functions") However, this left the S5PV210 platform with only clkdev entries linking "apb_pclk" clock conn_id to a dummy clock, rather than to corresponding platform PL330 DMAC clock. As a result the DMA controller is now attempted to be used on S5PV210 with the clock disabled and the driver fails with an error: dma-pl330 dma-pl330.0: PERIPH_ID 0x0, PCELL_ID 0x0 ! dma-pl330: probe of dma-pl330.0 failed with error -22 dma-pl330 dma-pl330.1: PERIPH_ID 0x0, PCELL_ID 0x0 ! dma-pl330: probe of dma-pl330.1 failed with error -22 Fix this by adding "apb_pclk" clkdev entries for the Peripheral DMA controllers 0/1 and removing the dummy apb_pclk clock. Reported-by: Lonsn Tested-by: Lonsn Cc: Inderpal Singh Cc: Boojin Kim Signed-off-by: Sylwester Nawrocki Cc: # v3.7+ Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv210/clock.c | 36 ++++++++++++++++++------------------ 1 file changed, 18 insertions(+), 18 deletions(-) diff --git a/arch/arm/mach-s5pv210/clock.c b/arch/arm/mach-s5pv210/clock.c index fcdf52d..f051f53 100644 --- a/arch/arm/mach-s5pv210/clock.c +++ b/arch/arm/mach-s5pv210/clock.c @@ -214,11 +214,6 @@ static struct clk clk_pcmcdclk2 = { .name = "pcmcdclk", }; -static struct clk dummy_apb_pclk = { - .name = "apb_pclk", - .id = -1, -}; - static struct clk *clkset_vpllsrc_list[] = { [0] = &clk_fin_vpll, [1] = &clk_sclk_hdmi27m, @@ -305,18 +300,6 @@ static struct clk_ops clk_fout_apll_ops = { static struct clk init_clocks_off[] = { { - .name = "dma", - .devname = "dma-pl330.0", - .parent = &clk_hclk_psys.clk, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 3), - }, { - .name = "dma", - .devname = "dma-pl330.1", - .parent = &clk_hclk_psys.clk, - .enable = s5pv210_clk_ip0_ctrl, - .ctrlbit = (1 << 4), - }, { .name = "rot", .parent = &clk_hclk_dsys.clk, .enable = s5pv210_clk_ip0_ctrl, @@ -573,6 +556,20 @@ static struct clk clk_hsmmc3 = { .ctrlbit = (1<<19), }; +static struct clk clk_pdma0 = { + .name = "pdma0", + .parent = &clk_hclk_psys.clk, + .enable = s5pv210_clk_ip0_ctrl, + .ctrlbit = (1 << 3), +}; + +static struct clk clk_pdma1 = { + .name = "pdma1", + .parent = &clk_hclk_psys.clk, + .enable = s5pv210_clk_ip0_ctrl, + .ctrlbit = (1 << 4), +}; + static struct clk *clkset_uart_list[] = { [6] = &clk_mout_mpll.clk, [7] = &clk_mout_epll.clk, @@ -1075,6 +1072,8 @@ static struct clk *clk_cdev[] = { &clk_hsmmc1, &clk_hsmmc2, &clk_hsmmc3, + &clk_pdma0, + &clk_pdma1, }; /* Clock initialisation code */ @@ -1333,6 +1332,8 @@ static struct clk_lookup s5pv210_clk_lookup[] = { CLKDEV_INIT(NULL, "spi_busclk0", &clk_p), CLKDEV_INIT("s5pv210-spi.0", "spi_busclk1", &clk_sclk_spi0.clk), CLKDEV_INIT("s5pv210-spi.1", "spi_busclk1", &clk_sclk_spi1.clk), + CLKDEV_INIT("dma-pl330.0", "apb_pclk", &clk_pdma0), + CLKDEV_INIT("dma-pl330.1", "apb_pclk", &clk_pdma1), }; void __init s5pv210_register_clocks(void) @@ -1361,6 +1362,5 @@ void __init s5pv210_register_clocks(void) for (ptr = 0; ptr < ARRAY_SIZE(clk_cdev); ptr++) s3c_disable_clocks(clk_cdev[ptr], 1); - s3c24xx_register_clock(&dummy_apb_pclk); s3c_pwmclk_init(); } -- cgit v1.1 From 0af18c5cc9403999bb189f825b816f7fc80fc0ee Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 4 Mar 2013 17:10:20 -0700 Subject: ASoC: tegra: fix I2S bit count mask This register field is 11 bits wide, not 15 bits wide. Given the way this value is currently, used, this patch has no practical effect. However, it's still best if the value is correct. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown --- sound/soc/tegra/tegra20_i2s.h | 2 +- sound/soc/tegra/tegra30_i2s.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/tegra/tegra20_i2s.h b/sound/soc/tegra/tegra20_i2s.h index c27069d..7299587 100644 --- a/sound/soc/tegra/tegra20_i2s.h +++ b/sound/soc/tegra/tegra20_i2s.h @@ -121,7 +121,7 @@ #define TEGRA20_I2S_TIMING_NON_SYM_ENABLE (1 << 12) #define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0 -#define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff +#define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7ff #define TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA20_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT) /* Fields in TEGRA20_I2S_FIFO_SCR */ diff --git a/sound/soc/tegra/tegra30_i2s.h b/sound/soc/tegra/tegra30_i2s.h index 34dc47b..a294d94 100644 --- a/sound/soc/tegra/tegra30_i2s.h +++ b/sound/soc/tegra/tegra30_i2s.h @@ -110,7 +110,7 @@ #define TEGRA30_I2S_TIMING_NON_SYM_ENABLE (1 << 12) #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0 -#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7fff +#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7ff #define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT) /* Fields in TEGRA30_I2S_OFFSET */ -- cgit v1.1 From 27777890d0fae55d14ef18791fc7994faf1bc867 Mon Sep 17 00:00:00 2001 From: Tony Breeds Date: Mon, 25 Feb 2013 16:20:05 +0000 Subject: powerpc: Fix compile of sha1-powerpc-asm.S on 32-bit When building with CRYPTO_SHA1_PPC enabled we fail with: powerpc/crypto/sha1-powerpc-asm.S: Assembler messages: powerpc/crypto/sha1-powerpc-asm.S:116: Error: can't resolve `0' {*ABS* section} - `STACKFRAMESIZE' {*UND* section} powerpc/crypto/sha1-powerpc-asm.S:116: Error: expression too complex powerpc/crypto/sha1-powerpc-asm.S:178: Error: unsupported relocation against STACKFRAMESIZE Use INT_FRAME_SIZE instead of STACKFRAMESIZE. Signed-off-by: Tony Breeds Tested-by: Christian Kujau Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/crypto/sha1-powerpc-asm.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/crypto/sha1-powerpc-asm.S b/arch/powerpc/crypto/sha1-powerpc-asm.S index a5f8264..125e165 100644 --- a/arch/powerpc/crypto/sha1-powerpc-asm.S +++ b/arch/powerpc/crypto/sha1-powerpc-asm.S @@ -113,7 +113,7 @@ STEPUP4((t)+16, fn) _GLOBAL(powerpc_sha_transform) - PPC_STLU r1,-STACKFRAMESIZE(r1) + PPC_STLU r1,-INT_FRAME_SIZE(r1) SAVE_8GPRS(14, r1) SAVE_10GPRS(22, r1) @@ -175,5 +175,5 @@ _GLOBAL(powerpc_sha_transform) REST_8GPRS(14, r1) REST_10GPRS(22, r1) - addi r1,r1,STACKFRAMESIZE + addi r1,r1,INT_FRAME_SIZE blr -- cgit v1.1 From 6b6680c4ea3952af8ae76915cbca41245147741b Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 25 Feb 2013 16:51:49 +0000 Subject: powerpc/pseries/hvcserver: Fix strncpy buffer limit in location code the dest buf len is 80 (HVCS_CLC_LENGTH + 1). the src buf len is PAGE_SIZE. if src buf string len is more than 80, it will cause issue. Signed-off-by: Chen Gang Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/hvcserver.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/pseries/hvcserver.c b/arch/powerpc/platforms/pseries/hvcserver.c index fcf4b4c..4557e91 100644 --- a/arch/powerpc/platforms/pseries/hvcserver.c +++ b/arch/powerpc/platforms/pseries/hvcserver.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -188,9 +189,9 @@ int hvcs_get_partner_info(uint32_t unit_address, struct list_head *head, = (unsigned int)last_p_partition_ID; /* copy the Null-term char too */ - strncpy(&next_partner_info->location_code[0], + strlcpy(&next_partner_info->location_code[0], (char *)&pi_buff[2], - strlen((char *)&pi_buff[2]) + 1); + sizeof(next_partner_info->location_code)); list_add_tail(&(next_partner_info->node), head); next_partner_info = NULL; -- cgit v1.1 From 9276dfd27897a0b29d8b5814f39a1f82f56b6b6b Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 25 Feb 2013 17:43:25 +0000 Subject: drivers/tty/hvc: Use strlcpy instead of strncpy when strlen pi->location_code is larger than HVCS_CLC_LENGTH + 1, original implementation can not let hvcsd->p_location_code NUL terminated. so need fix it (also can simplify the code) Signed-off-by: Chen Gang Signed-off-by: Benjamin Herrenschmidt --- drivers/tty/hvc/hvcs.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c index 1956593..81e939e 100644 --- a/drivers/tty/hvc/hvcs.c +++ b/drivers/tty/hvc/hvcs.c @@ -881,17 +881,12 @@ static struct vio_driver hvcs_vio_driver = { /* Only called from hvcs_get_pi please */ static void hvcs_set_pi(struct hvcs_partner_info *pi, struct hvcs_struct *hvcsd) { - int clclength; - hvcsd->p_unit_address = pi->unit_address; hvcsd->p_partition_ID = pi->partition_ID; - clclength = strlen(&pi->location_code[0]); - if (clclength > HVCS_CLC_LENGTH) - clclength = HVCS_CLC_LENGTH; /* copy the null-term char too */ - strncpy(&hvcsd->p_location_code[0], - &pi->location_code[0], clclength + 1); + strlcpy(&hvcsd->p_location_code[0], + &pi->location_code[0], sizeof(hvcsd->p_location_code)); } /* -- cgit v1.1 From 6a404806dfceba9b154015705a9e647fa7749fd8 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Wed, 27 Feb 2013 10:45:52 +0000 Subject: powerpc: Avoid link stack corruption in MMU on syscall entry path Currently we use the link register to branch up high in the early MMU on syscall entry path. Unfortunately, this trashes the link stack as the address we are going to is not associated with the earlier mflr. This patch simply converts us to used the count register (volatile over syscalls anyway) instead. This is much better at predicting in this scenario and doesn't trash link stack causing a bunch of additional branch mispredicts later. Benchmarking this on POWER8 saves a bunch of cycles on Anton's null syscall benchmark here: http://ozlabs.org/~anton/junkcode/null_syscall.c Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/exceptions-64s.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index a8a5361..87ef8f5 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -74,13 +74,13 @@ END_FTR_SECTION_IFSET(CPU_FTR_REAL_LE) \ mflr r10 ; \ ld r12,PACAKBASE(r13) ; \ LOAD_HANDLER(r12, system_call_entry_direct) ; \ - mtlr r12 ; \ + mtctr r12 ; \ mfspr r12,SPRN_SRR1 ; \ /* Re-use of r13... No spare regs to do this */ \ li r13,MSR_RI ; \ mtmsrd r13,1 ; \ GET_PACA(r13) ; /* get r13 back */ \ - blr ; + bctr ; #else /* We can branch directly */ #define SYSCALL_PSERIES_2_DIRECT \ -- cgit v1.1 From a74f350b5ce6d8dd1847aa1191ea177fff025567 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Sat, 2 Mar 2013 04:06:30 +0000 Subject: powerpc: Remove unused BITOP_LE_SWIZZLE macro The BITOP_LE_SWIZZLE macro was used in the little-endian bitops functions for powerpc. But these functions were converted to generic bitops and the BITOP_LE_SWIZZLE is not used anymore. Signed-off-by: Akinobu Mita Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/bitops.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index ef918a2..08bd299 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -52,8 +52,6 @@ #define smp_mb__before_clear_bit() smp_mb() #define smp_mb__after_clear_bit() smp_mb() -#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7) - /* Macro for generating the ***_bits() functions */ #define DEFINE_BITOP(fn, op, prefix, postfix) \ static __inline__ void fn(unsigned long mask, \ -- cgit v1.1 From 8170a83f15eeca9a84ff895f1a89b58918425a3f Mon Sep 17 00:00:00 2001 From: Tony Breeds Date: Mon, 4 Mar 2013 15:57:30 +0000 Subject: powerpc: Wireup the kcmp syscall to sys_ni Since kmp takes 2 unsigned long args there should be a compat wrapper. Since one isn't provided I think it's safer just to hook this up to not implemented. If we need it later we can do it properly then. Signed-off-by: Tony Breeds Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/systbl.h | 1 + arch/powerpc/include/asm/unistd.h | 2 +- arch/powerpc/include/uapi/asm/unistd.h | 1 + 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h index 535b6d8..ebbec52 100644 --- a/arch/powerpc/include/asm/systbl.h +++ b/arch/powerpc/include/asm/systbl.h @@ -358,3 +358,4 @@ SYSCALL_SPU(setns) COMPAT_SYS(process_vm_readv) COMPAT_SYS(process_vm_writev) SYSCALL(finit_module) +SYSCALL(ni_syscall) /* sys_kcmp */ diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h index f25b5c4..1487f0f 100644 --- a/arch/powerpc/include/asm/unistd.h +++ b/arch/powerpc/include/asm/unistd.h @@ -12,7 +12,7 @@ #include -#define __NR_syscalls 354 +#define __NR_syscalls 355 #define __NR__exit __NR_exit #define NR_syscalls __NR_syscalls diff --git a/arch/powerpc/include/uapi/asm/unistd.h b/arch/powerpc/include/uapi/asm/unistd.h index 8c478c6..74cb4d7 100644 --- a/arch/powerpc/include/uapi/asm/unistd.h +++ b/arch/powerpc/include/uapi/asm/unistd.h @@ -376,6 +376,7 @@ #define __NR_process_vm_readv 351 #define __NR_process_vm_writev 352 #define __NR_finit_module 353 +#define __NR_kcmp 354 #endif /* _UAPI_ASM_POWERPC_UNISTD_H_ */ -- cgit v1.1 From 57d231678ace658b3a73a0d144cfebbd4257bc0e Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Mon, 4 Mar 2013 19:45:50 +0000 Subject: powerpc: Fix setting FSCR for HV=0 and on secondary CPUs Currently we only set the FSCR (Facility Status and Control Register) when HV=1 but this feature is available when HV=0 also. This patch sets FSCR when HV=0. Also, we currently only set the FSCR on the master CPU. This patch also sets the FSCR on secondary CPUs. Signed-off-by: Michael Neuling cc: Ian Munsie Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/cpu_setup_power.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index d29facb..bb2d203 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -48,6 +48,7 @@ _GLOBAL(__restore_cpu_power7) _GLOBAL(__setup_cpu_power8) mflr r11 + bl __init_FSCR bl __init_hvmode_206 mtlr r11 beqlr @@ -56,13 +57,13 @@ _GLOBAL(__setup_cpu_power8) mfspr r3,SPRN_LPCR oris r3, r3, LPCR_AIL_3@h bl __init_LPCR - bl __init_FSCR bl __init_TLB mtlr r11 blr _GLOBAL(__restore_cpu_power8) mflr r11 + bl __init_FSCR mfmsr r3 rldicl. r0,r3,4,63 beqlr -- cgit v1.1 From fa759e9b0984748cf626aac59bca60bdab42c644 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Mon, 4 Mar 2013 19:45:51 +0000 Subject: powerpc: Add DSCR FSCR register bit definition This sets the DSCR (Data Stream Control Register) in the FSCR (Facility Status & Control Register). Also harmonise TAR (Target Address Register) FSCR bit definition too. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/reg.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index e665861..c9c67fc 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -266,7 +266,8 @@ #define SPRN_HSRR0 0x13A /* Hypervisor Save/Restore 0 */ #define SPRN_HSRR1 0x13B /* Hypervisor Save/Restore 1 */ #define SPRN_FSCR 0x099 /* Facility Status & Control Register */ -#define FSCR_TAR (1<<8) /* Enable Target Adress Register */ +#define FSCR_TAR (1 << (63-55)) /* Enable Target Address Register */ +#define FSCR_DSCR (1 << (63-61)) /* Enable Data Stream Control Register */ #define SPRN_TAR 0x32f /* Target Address Register */ #define SPRN_LPCR 0x13E /* LPAR Control Register */ #define LPCR_VPM0 (1ul << (63-0)) -- cgit v1.1 From 54c9b2253d34e8998e4bff9ac2d7a3ba0b861d52 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Mon, 4 Mar 2013 19:45:52 +0000 Subject: powerpc: Set DSCR bit in FSCR setup We support DSCR (Data Stream Control Register) so we should make sure we set it in the FSCR (Facility Status & Control Register) incase some firmwares don't set it. If we don't set this, we'll take a facility unavailable exception when using the DSCR. Signed-off-by: Michael Neuling Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/cpu_setup_power.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index bb2d203..ea847ab 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -116,7 +116,7 @@ __init_LPCR: __init_FSCR: mfspr r3,SPRN_FSCR - ori r3,r3,FSCR_TAR + ori r3,r3,FSCR_TAR|FSCR_DSCR mtspr SPRN_FSCR,r3 blr -- cgit v1.1 From e08f626b33eb636dbf38b21618ab32b7fd8e1ec4 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Wed, 20 Feb 2013 03:06:34 +0000 Subject: e1000e: workaround DMA unit hang on I218 At 1000Mbps link speed, one of the MAC's internal clocks can be stopped for up to 4us when entering K1 (a power mode of the MAC-PHY interconnect). If the MAC is waiting for completion indications for 2 DMA write requests into Host memory (e.g. descriptor writeback or Rx packet writing) and the indications occur while the clock is stopped, both indications will be missed by the MAC causing the MAC to wait for the completion indications and be unable to generate further DMA write requests. This results in an apparent hardware hang. Work-around the issue by disabling the de-assertion of the clock request when 1000Mbps link is acquired (K1 must be disabled while doing this). Signed-off-by: Bruce Allan Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 71 ++++++++++++++++++++++++++++- drivers/net/ethernet/intel/e1000e/ich8lan.h | 2 + drivers/net/ethernet/intel/e1000e/regs.h | 1 + 3 files changed, 73 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index dff7bff..121a865 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -782,6 +782,59 @@ release: } /** + * e1000_k1_workaround_lpt_lp - K1 workaround on Lynxpoint-LP + * @hw: pointer to the HW structure + * @link: link up bool flag + * + * When K1 is enabled for 1Gbps, the MAC can miss 2 DMA completion indications + * preventing further DMA write requests. Workaround the issue by disabling + * the de-assertion of the clock request when in 1Gpbs mode. + **/ +static s32 e1000_k1_workaround_lpt_lp(struct e1000_hw *hw, bool link) +{ + u32 fextnvm6 = er32(FEXTNVM6); + s32 ret_val = 0; + + if (link && (er32(STATUS) & E1000_STATUS_SPEED_1000)) { + u16 kmrn_reg; + + ret_val = hw->phy.ops.acquire(hw); + if (ret_val) + return ret_val; + + ret_val = + e1000e_read_kmrn_reg_locked(hw, E1000_KMRNCTRLSTA_K1_CONFIG, + &kmrn_reg); + if (ret_val) + goto release; + + ret_val = + e1000e_write_kmrn_reg_locked(hw, + E1000_KMRNCTRLSTA_K1_CONFIG, + kmrn_reg & + ~E1000_KMRNCTRLSTA_K1_ENABLE); + if (ret_val) + goto release; + + usleep_range(10, 20); + + ew32(FEXTNVM6, fextnvm6 | E1000_FEXTNVM6_REQ_PLL_CLK); + + ret_val = + e1000e_write_kmrn_reg_locked(hw, + E1000_KMRNCTRLSTA_K1_CONFIG, + kmrn_reg); +release: + hw->phy.ops.release(hw); + } else { + /* clear FEXTNVM6 bit 8 on link down or 10/100 */ + ew32(FEXTNVM6, fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK); + } + + return ret_val; +} + +/** * e1000_check_for_copper_link_ich8lan - Check for link (Copper) * @hw: pointer to the HW structure * @@ -818,6 +871,14 @@ static s32 e1000_check_for_copper_link_ich8lan(struct e1000_hw *hw) return ret_val; } + /* Work-around I218 hang issue */ + if ((hw->adapter->pdev->device == E1000_DEV_ID_PCH_LPTLP_I218_LM) || + (hw->adapter->pdev->device == E1000_DEV_ID_PCH_LPTLP_I218_V)) { + ret_val = e1000_k1_workaround_lpt_lp(hw, link); + if (ret_val) + return ret_val; + } + /* Clear link partner's EEE ability */ hw->dev_spec.ich8lan.eee_lp_ability = 0; @@ -3954,8 +4015,16 @@ void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw) phy_ctrl = er32(PHY_CTRL); phy_ctrl |= E1000_PHY_CTRL_GBE_DISABLE; + if (hw->phy.type == e1000_phy_i217) { - u16 phy_reg; + u16 phy_reg, device_id = hw->adapter->pdev->device; + + if ((device_id == E1000_DEV_ID_PCH_LPTLP_I218_LM) || + (device_id == E1000_DEV_ID_PCH_LPTLP_I218_V)) { + u32 fextnvm6 = er32(FEXTNVM6); + + ew32(FEXTNVM6, fextnvm6 & ~E1000_FEXTNVM6_REQ_PLL_CLK); + } ret_val = hw->phy.ops.acquire(hw); if (ret_val) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.h b/drivers/net/ethernet/intel/e1000e/ich8lan.h index b6d3174..8bf4655 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.h +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.h @@ -92,6 +92,8 @@ #define E1000_FEXTNVM4_BEACON_DURATION_8USEC 0x7 #define E1000_FEXTNVM4_BEACON_DURATION_16USEC 0x3 +#define E1000_FEXTNVM6_REQ_PLL_CLK 0x00000100 + #define PCIE_ICH8_SNOOP_ALL PCIE_NO_SNOOP_ALL #define E1000_ICH_RAR_ENTRIES 7 diff --git a/drivers/net/ethernet/intel/e1000e/regs.h b/drivers/net/ethernet/intel/e1000e/regs.h index 794fe14..a7e6a3e 100644 --- a/drivers/net/ethernet/intel/e1000e/regs.h +++ b/drivers/net/ethernet/intel/e1000e/regs.h @@ -42,6 +42,7 @@ #define E1000_FEXTNVM 0x00028 /* Future Extended NVM - RW */ #define E1000_FEXTNVM3 0x0003C /* Future Extended NVM 3 - RW */ #define E1000_FEXTNVM4 0x00024 /* Future Extended NVM 4 - RW */ +#define E1000_FEXTNVM6 0x00010 /* Future Extended NVM 6 - RW */ #define E1000_FEXTNVM7 0x000E4 /* Future Extended NVM 7 - RW */ #define E1000_FCT 0x00030 /* Flow Control Type - RW */ #define E1000_VET 0x00038 /* VLAN Ether Type - RW */ -- cgit v1.1 From 0920a48719f1ceefc909387a64f97563848c7854 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?St=C3=A9phane=20Marchesin?= Date: Tue, 29 Jan 2013 19:41:59 -0800 Subject: drm/i915: Increase the RC6p threshold. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This increases GEN6_RC6p_THRESHOLD from 100000 to 150000. For some reason this avoids the gen6_gt_check_fifodbg.isra warnings and associated GPU lockups, which makes my ivy bridge machine stable. Signed-off-by: Stéphane Marchesin Acked-by: Jesse Barnes Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 61fee7f..a1794c6 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -2574,7 +2574,7 @@ static void gen6_enable_rps(struct drm_device *dev) I915_WRITE(GEN6_RC_SLEEP, 0); I915_WRITE(GEN6_RC1e_THRESHOLD, 1000); I915_WRITE(GEN6_RC6_THRESHOLD, 50000); - I915_WRITE(GEN6_RC6p_THRESHOLD, 100000); + I915_WRITE(GEN6_RC6p_THRESHOLD, 150000); I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */ /* Check if we are enabling RC6 */ -- cgit v1.1 From e4f7dbb17e797d922d72567f37de3735722034ba Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Thu, 21 Feb 2013 03:08:50 +0000 Subject: igb: Drop BUILD_BUG_ON check from igb_build_rx_buffer On s390 the igb driver was throwing a build error due to the fact that a frame built using build_skb would be larger than 2K. Since this is not likely to change at any point in the future we are better off just dropping the check since we already had a check in igb_set_rx_buffer_len that will just disable the usage of build_skb anyway. Signed-off-by: Alexander Duyck Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index ed79a1c..4d53a17 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -6227,13 +6227,6 @@ static struct sk_buff *igb_build_rx_buffer(struct igb_ring *rx_ring, /* If we spanned a buffer we have a huge mess so test for it */ BUG_ON(unlikely(!igb_test_staterr(rx_desc, E1000_RXD_STAT_EOP))); - /* Guarantee this function can be used by verifying buffer sizes */ - BUILD_BUG_ON(SKB_WITH_OVERHEAD(IGB_RX_BUFSZ) < (NET_SKB_PAD + - NET_IP_ALIGN + - IGB_TS_HDR_LEN + - ETH_FRAME_LEN + - ETH_FCS_LEN)); - rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; page = rx_buffer->page; prefetchw(page); -- cgit v1.1 From ed65bdd8c0086d69948e6380dba0cc279a6906de Mon Sep 17 00:00:00 2001 From: Carolyn Wyborny Date: Wed, 6 Feb 2013 03:35:27 +0000 Subject: igb: Fix link setup for I210 devices This patch changes the setup copper link function to use a switch statement for the PHY id's available for the given PHY types. It also adds a case for the I210 PHY id, so the appropriate setup link function is called for it. Signed-off-by: Carolyn Wyborny Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/e1000_82575.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c index 84e7e09..b64542a 100644 --- a/drivers/net/ethernet/intel/igb/e1000_82575.c +++ b/drivers/net/ethernet/intel/igb/e1000_82575.c @@ -1361,11 +1361,16 @@ static s32 igb_setup_copper_link_82575(struct e1000_hw *hw) switch (hw->phy.type) { case e1000_phy_i210: case e1000_phy_m88: - if (hw->phy.id == I347AT4_E_PHY_ID || - hw->phy.id == M88E1112_E_PHY_ID) + switch (hw->phy.id) { + case I347AT4_E_PHY_ID: + case M88E1112_E_PHY_ID: + case I210_I_PHY_ID: ret_val = igb_copper_link_setup_m88_gen2(hw); - else + break; + default: ret_val = igb_copper_link_setup_m88(hw); + break; + } break; case e1000_phy_igp_3: ret_val = igb_copper_link_setup_igp(hw); -- cgit v1.1 From 6551fbdfd8b85d1ab5822ac98abb4fb449bcfae0 Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Thu, 28 Feb 2013 16:28:41 +0100 Subject: s390: critical section cleanup vs. machine checks The current machine check code uses the registers stored by the machine in the lowcore at __LC_GPREGS_SAVE_AREA as the registers of the interrupted context. The registers 0-7 of a user process can get clobbered if a machine checks interrupts the execution of a critical section in entry[64].S. The reason is that the critical section cleanup code may need to modify the PSW and the registers for the previous context to get to the end of a critical section. If registers 0-7 have to be replaced the relevant copy will be in the registers, which invalidates the copy in the lowcore. The machine check handler needs to explicitly store registers 0-7 to the stack. Cc: stable@vger.kernel.org Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/entry.S | 3 ++- arch/s390/kernel/entry64.S | 5 +++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index 5502285..94feff7 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -636,7 +636,8 @@ ENTRY(mcck_int_handler) UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER mcck_skip: SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT - mvc __PT_R0(64,%r11),__LC_GPREGS_SAVE_AREA + stm %r0,%r7,__PT_R0(%r11) + mvc __PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32 stm %r8,%r9,__PT_PSW(%r11) xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15) l %r1,BASED(.Ldo_machine_check) diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 9c837c1..2e6d60c 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -678,8 +678,9 @@ ENTRY(mcck_int_handler) UPDATE_VTIME %r14,__LC_MCCK_ENTER_TIMER LAST_BREAK %r14 mcck_skip: - lghi %r14,__LC_GPREGS_SAVE_AREA - mvc __PT_R0(128,%r11),0(%r14) + lghi %r14,__LC_GPREGS_SAVE_AREA+64 + stmg %r0,%r7,__PT_R0(%r11) + mvc __PT_R8(64,%r11),0(%r14) stmg %r8,%r9,__PT_PSW(%r11) xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15) lgr %r2,%r11 # pass pointer to pt_regs -- cgit v1.1 From a7bb1ae749e8051434e54936dcefd37ef1cfa753 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Thu, 28 Feb 2013 11:16:26 +0100 Subject: s390/mm: fix vmemmap size calculation The size of the vmemmap must be a multiple of PAGES_PER_SECTION, since the common code always initializes the vmemmap in such pieces. So we must round up in order to not have a too small vmemmap. Fixes an IPL crash on 31 bit with more than 1920MB. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/setup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index a5360de..2926885 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -571,6 +571,8 @@ static void __init setup_memory_end(void) /* Split remaining virtual space between 1:1 mapping & vmemmap array */ tmp = VMALLOC_START / (PAGE_SIZE + sizeof(struct page)); + /* vmemmap contains a multiple of PAGES_PER_SECTION struct pages */ + tmp = SECTION_ALIGN_UP(tmp); tmp = VMALLOC_START - tmp * sizeof(struct page); tmp &= ~((vmax >> 11) - 1); /* align to page table level */ tmp = min(tmp, 1UL << MAX_PHYSMEM_BITS); -- cgit v1.1 From 15239099d7a7a9ecdc1ccb5b187ae4cda5488ff9 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Tue, 5 Mar 2013 09:50:58 +0100 Subject: drm/i915: enable irqs earlier when resuming We need it to restore the ilk rc6 context, since the gpu wait no requires interrupts. But in general having interrupts around should help in code sanity, since more and more stuff is interrupt driven. This regression has been introduced in commit 3e9605018ab3e333d51cc90fccfde2031886763b Author: Chris Wilson Date: Tue Nov 27 16:22:54 2012 +0000 drm/i915: Rearrange code to only have a single method for waiting upon the ring Like in the driver load code we need to make sure that hotplug interrupts don't cause havoc with our modeset state, hence block them with the existing infrastructure. Again we ignore races where we might loose hotplug interrupts ... Note that the driver load part of the regression has already been fixed in commit 52d7ecedac3f96fb562cb482c139015372728638 Author: Daniel Vetter Date: Sat Dec 1 21:03:22 2012 +0100 drm/i915: reorder setup sequence to have irqs for output setup v2: Add a note to the commit message about which patch fixed the driver load part of the regression. Stable kernels need to backport both patches. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=54691 Cc: stable@vger.kernel.org (for 3.8 only, plese backport 52d7ecedac3f96fb5 first) Cc: Chris Wilson Cc: Mika Kuoppala Reported-and-Tested-by: Ilya Tumaykin Reviewed-by: Chris wilson (v1) Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 2c5ee96..0a8eceb 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -495,6 +495,7 @@ static int i915_drm_freeze(struct drm_device *dev) intel_modeset_disable(dev); drm_irq_uninstall(dev); + dev_priv->enable_hotplug_processing = false; } i915_save_state(dev); @@ -568,10 +569,20 @@ static int __i915_drm_thaw(struct drm_device *dev) error = i915_gem_init_hw(dev); mutex_unlock(&dev->struct_mutex); + /* We need working interrupts for modeset enabling ... */ + drm_irq_install(dev); + intel_modeset_init_hw(dev); intel_modeset_setup_hw_state(dev, false); - drm_irq_install(dev); + + /* + * ... but also need to make sure that hotplug processing + * doesn't cause havoc. Like in the driver load code we don't + * bother with the tiny race here where we might loose hotplug + * notifications. + * */ intel_hpd_init(dev); + dev_priv->enable_hotplug_processing = true; } intel_opregion_init(dev); -- cgit v1.1 From f6a70a07079518280022286a1dceb797d12e1edf Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Mon, 4 Mar 2013 14:14:11 +0100 Subject: s390/mm: fix flush_tlb_kernel_range() Our flush_tlb_kernel_range() implementation calls __tlb_flush_mm() with &init_mm as argument. __tlb_flush_mm() however will only flush tlbs for the passed in mm if its mm_cpumask is not empty. For the init_mm however its mm_cpumask has never any bits set. Which in turn means that our flush_tlb_kernel_range() implementation doesn't work at all. This can be easily verified with a vmalloc/vfree loop which allocates a page, writes to it and then frees the page again. A crash will follow almost instantly. To fix this remove the cpumask_empty() check in __tlb_flush_mm() since there shouldn't be too many mms with a zero mm_cpumask, besides the init_mm of course. Cc: stable@vger.kernel.org Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/tlbflush.h | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h index 1d8fe2b..6b32af3 100644 --- a/arch/s390/include/asm/tlbflush.h +++ b/arch/s390/include/asm/tlbflush.h @@ -74,8 +74,6 @@ static inline void __tlb_flush_idte(unsigned long asce) static inline void __tlb_flush_mm(struct mm_struct * mm) { - if (unlikely(cpumask_empty(mm_cpumask(mm)))) - return; /* * If the machine has IDTE we prefer to do a per mm flush * on all cpus instead of doing a local flush if the mm -- cgit v1.1 From 603e86fa39cd48edba5ee8a4d19637bd41e2a8bf Mon Sep 17 00:00:00 2001 From: Carolyn Wyborny Date: Wed, 20 Feb 2013 07:40:55 +0000 Subject: igb: Fix for lockdep issue in igb_get_i2c_client This patch fixes a lockdep warning in igb_get_i2c_client by refactoring the initialization and usage of the i2c_client completely. There is no on the fly allocation of the single client needed today. Signed-off-by: Carolyn Wyborny Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb.h | 2 +- drivers/net/ethernet/intel/igb/igb_hwmon.c | 14 ++++++ drivers/net/ethernet/intel/igb/igb_main.c | 69 +----------------------------- 3 files changed, 17 insertions(+), 68 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index d27edbc..2515140 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -447,7 +447,7 @@ struct igb_adapter { #endif struct i2c_algo_bit_data i2c_algo; struct i2c_adapter i2c_adap; - struct igb_i2c_client_list *i2c_clients; + struct i2c_client *i2c_client; }; #define IGB_FLAG_HAS_MSI (1 << 0) diff --git a/drivers/net/ethernet/intel/igb/igb_hwmon.c b/drivers/net/ethernet/intel/igb/igb_hwmon.c index 0a9b073..4623502 100644 --- a/drivers/net/ethernet/intel/igb/igb_hwmon.c +++ b/drivers/net/ethernet/intel/igb/igb_hwmon.c @@ -39,6 +39,10 @@ #include #ifdef CONFIG_IGB_HWMON +struct i2c_board_info i350_sensor_info = { + I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)), +}; + /* hwmon callback functions */ static ssize_t igb_hwmon_show_location(struct device *dev, struct device_attribute *attr, @@ -188,6 +192,7 @@ int igb_sysfs_init(struct igb_adapter *adapter) unsigned int i; int n_attrs; int rc = 0; + struct i2c_client *client = NULL; /* If this method isn't defined we don't support thermals */ if (adapter->hw.mac.ops.init_thermal_sensor_thresh == NULL) @@ -198,6 +203,15 @@ int igb_sysfs_init(struct igb_adapter *adapter) if (rc) goto exit; + /* init i2c_client */ + client = i2c_new_device(&adapter->i2c_adap, &i350_sensor_info); + if (client == NULL) { + dev_info(&adapter->pdev->dev, + "Failed to create new i2c device..\n"); + goto exit; + } + adapter->i2c_client = client; + /* Allocation space for max attributes * max num sensors * values (loc, temp, max, caution) */ diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 4d53a17..4dbd629 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -1923,10 +1923,6 @@ void igb_set_fw_version(struct igb_adapter *adapter) return; } -static const struct i2c_board_info i350_sensor_info = { - I2C_BOARD_INFO("i350bb", 0Xf8), -}; - /* igb_init_i2c - Init I2C interface * @adapter: pointer to adapter structure * @@ -7717,67 +7713,6 @@ static void igb_init_dmac(struct igb_adapter *adapter, u32 pba) } } -static DEFINE_SPINLOCK(i2c_clients_lock); - -/* igb_get_i2c_client - returns matching client - * in adapters's client list. - * @adapter: adapter struct - * @dev_addr: device address of i2c needed. - */ -static struct i2c_client * -igb_get_i2c_client(struct igb_adapter *adapter, u8 dev_addr) -{ - ulong flags; - struct igb_i2c_client_list *client_list; - struct i2c_client *client = NULL; - struct i2c_board_info client_info = { - I2C_BOARD_INFO("igb", 0x00), - }; - - spin_lock_irqsave(&i2c_clients_lock, flags); - client_list = adapter->i2c_clients; - - /* See if we already have an i2c_client */ - while (client_list) { - if (client_list->client->addr == (dev_addr >> 1)) { - client = client_list->client; - goto exit; - } else { - client_list = client_list->next; - } - } - - /* no client_list found, create a new one */ - client_list = kzalloc(sizeof(*client_list), GFP_ATOMIC); - if (client_list == NULL) - goto exit; - - /* dev_addr passed to us is left-shifted by 1 bit - * i2c_new_device call expects it to be flush to the right. - */ - client_info.addr = dev_addr >> 1; - client_info.platform_data = adapter; - client_list->client = i2c_new_device(&adapter->i2c_adap, &client_info); - if (client_list->client == NULL) { - dev_info(&adapter->pdev->dev, - "Failed to create new i2c device..\n"); - goto err_no_client; - } - - /* insert new client at head of list */ - client_list->next = adapter->i2c_clients; - adapter->i2c_clients = client_list; - - client = client_list->client; - goto exit; - -err_no_client: - kfree(client_list); -exit: - spin_unlock_irqrestore(&i2c_clients_lock, flags); - return client; -} - /* igb_read_i2c_byte - Reads 8 bit word over I2C * @hw: pointer to hardware structure * @byte_offset: byte offset to read @@ -7791,7 +7726,7 @@ s32 igb_read_i2c_byte(struct e1000_hw *hw, u8 byte_offset, u8 dev_addr, u8 *data) { struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); - struct i2c_client *this_client = igb_get_i2c_client(adapter, dev_addr); + struct i2c_client *this_client = adapter->i2c_client; s32 status; u16 swfw_mask = 0; @@ -7828,7 +7763,7 @@ s32 igb_write_i2c_byte(struct e1000_hw *hw, u8 byte_offset, u8 dev_addr, u8 data) { struct igb_adapter *adapter = container_of(hw, struct igb_adapter, hw); - struct i2c_client *this_client = igb_get_i2c_client(adapter, dev_addr); + struct i2c_client *this_client = adapter->i2c_client; s32 status; u16 swfw_mask = E1000_SWFW_PHY0_SM; -- cgit v1.1 From fbe2d3616cee37418d832b30130811888c5aaf34 Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Thu, 21 Feb 2013 21:44:17 -0800 Subject: EDAC: Make sysfs functions static Fixes lots of sparse warnings here. Signed-off-by: Stephen Hemminger Signed-off-by: Borislav Petkov --- drivers/edac/edac_mc_sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 4f4b613..0cbf670 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -143,7 +143,7 @@ static const char *edac_caps[] = { * and the per-dimm/per-rank one */ #define DEVICE_ATTR_LEGACY(_name, _mode, _show, _store) \ - struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store) + static struct device_attribute dev_attr_legacy_##_name = __ATTR(_name, _mode, _show, _store) struct dev_ch_attribute { struct device_attribute attr; -- cgit v1.1 From 43febb27dcdaf9a15e2f362a6d09b0f191c4dcea Mon Sep 17 00:00:00 2001 From: Nishanth Menon Date: Mon, 4 Mar 2013 16:52:38 -0600 Subject: usb: gadget: composite: fix kernel-doc warnings A few trivial fixes for composite driver: Warning(include/linux/usb/composite.h:165): No description found for parameter 'fs_descriptors' Warning(include/linux/usb/composite.h:165): Excess struct/union/enum/typedef member 'descriptors' description in 'usb_function' Warning(include/linux/usb/composite.h:321): No description found for parameter 'gadget_driver' Warning(drivers/usb/gadget/composite.c:1777): Excess function parameter 'bind' description in 'usb_composite_probe' Cc: Greg Kroah-Hartman Cc: Jiri Kosina Cc: linux-usb@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Nishanth Menon Signed-off-by: Felipe Balbi --- drivers/usb/gadget/composite.c | 5 +---- include/linux/usb/composite.h | 3 ++- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c index 7c821de..c0d62b2 100644 --- a/drivers/usb/gadget/composite.c +++ b/drivers/usb/gadget/composite.c @@ -1757,10 +1757,7 @@ static const struct usb_gadget_driver composite_driver_template = { /** * usb_composite_probe() - register a composite driver * @driver: the driver to register - * @bind: the callback used to allocate resources that are shared across the - * whole device, such as string IDs, and add its configurations using - * @usb_add_config(). This may fail by returning a negative errno - * value; it should return zero on successful initialization. + * * Context: single threaded during gadget setup * * This function is used to register drivers using the composite driver diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 3c671c1..8860594 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -60,7 +60,7 @@ struct usb_configuration; * @name: For diagnostics, identifies the function. * @strings: tables of strings, keyed by identifiers assigned during bind() * and by language IDs provided in control requests - * @descriptors: Table of full (or low) speed descriptors, using interface and + * @fs_descriptors: Table of full (or low) speed descriptors, using interface and * string identifiers assigned during @bind(). If this pointer is null, * the function will not be available at full speed (or at low speed). * @hs_descriptors: Table of high speed descriptors, using interface and @@ -290,6 +290,7 @@ enum { * after function notifications * @resume: Notifies configuration when the host restarts USB traffic, * before function notifications + * @gadget_driver: Gadget driver controlling this driver * * Devices default to reporting self powered operation. Devices which rely * on bus powered operation should report this in their @bind method. -- cgit v1.1 From 341a71c790529140fc5f8833f893324f6b5261cc Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 5 Mar 2013 13:18:49 +0200 Subject: usb: musb: remove all 'select' from Kconfig those are quite unnecessary, the only thing we need to be careful about is USB_OTG_UTILS which get properly selected by PHY drivers. For now, MUSB will select only USB_OTG_UTILS until we add stubs for the cases when PHY layer isn't enabled. Signed-off-by: Felipe Balbi --- drivers/usb/musb/Kconfig | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 2f7d84a..05e5143 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -7,9 +7,6 @@ config USB_MUSB_HDRC tristate 'Inventra Highspeed Dual Role Controller (TI, ADI, ...)' depends on USB && USB_GADGET - select NOP_USB_XCEIV if (ARCH_DAVINCI || MACH_OMAP3EVM || BLACKFIN) - select NOP_USB_XCEIV if (SOC_TI81XX || SOC_AM33XX) - select OMAP_CONTROL_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA select USB_OTG_UTILS help Say Y here if your system has a dual role high speed USB @@ -49,8 +46,6 @@ config USB_MUSB_TUSB6010 config USB_MUSB_OMAP2PLUS tristate "OMAP2430 and onwards" depends on ARCH_OMAP2PLUS - select TWL4030_USB if MACH_OMAP_3430SDP - select TWL6030_USB if MACH_OMAP_4430SDP || MACH_OMAP4_PANDA config USB_MUSB_AM35X tristate "AM35x" -- cgit v1.1 From e574d5708156585ee506b7f914ed4a55a319d294 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 5 Mar 2013 13:25:36 +0200 Subject: usb: musb: fix compile warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When running 100 randconfig iterations, I found the following warning: drivers/usb/musb/musb_core.c: In function ‘musb_init_controller’: drivers/usb/musb/musb_core.c:1981:1: warning: label ‘fail5’ defined \ but not used [-Wunused-label] this patch fixes it by removing the unnecessary ifdef CONFIG_SYSFS. Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 60b41cc..13382e0 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1968,11 +1968,9 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) if (status < 0) goto fail4; -#ifdef CONFIG_SYSFS status = sysfs_create_group(&musb->controller->kobj, &musb_attr_group); if (status) goto fail5; -#endif pm_runtime_put(musb->controller); -- cgit v1.1 From f8c4b0e73b636fe06e8283f29905c2e60ed66fa1 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 5 Mar 2013 13:04:23 +0200 Subject: usb: musb: omap2430: fix omap_musb_mailbox glue check again Commit 80ab72e1 (usb: musb: omap2430: fix the readiness check in omap_musb_mailbox) made the check incorrect, as we will lose the glue/link status during the normal built-in probe order (twl4030_usb is probed after musb omap2430, but before musb core is ready). As a result, if you boot with USB cable on and load g_ether, the connection does not work as the code thinks the cable is off and the phy gets powered down immediately. This is a major regression in 3.9-rc1. So the proper check should be: exit if _glue is NULL, but if it's initialized we memorize the status, and then check if the musb core is ready. Signed-off-by: Aaro Koskinen Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 1762354..2a39c11 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -237,9 +237,13 @@ void omap_musb_mailbox(enum omap_musb_vbus_id_status status) { struct omap2430_glue *glue = _glue; - if (glue && glue_to_musb(glue)) { - glue->status = status; - } else { + if (!glue) { + pr_err("%s: musb core is not yet initialized\n", __func__); + return; + } + glue->status = status; + + if (!glue_to_musb(glue)) { pr_err("%s: musb core is not yet ready\n", __func__); return; } -- cgit v1.1 From 4b58ed11c681c0779c330f1aa5307b594943b683 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 5 Mar 2013 13:04:24 +0200 Subject: usb: musb: omap2430: fix sparse warning Fix the following sparse warning: drivers/usb/musb/omap2430.c:54:33: warning: symbol '_glue' was not \ declared. Should it be static? Signed-off-by: Aaro Koskinen Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 2a39c11..1a42a45 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -51,7 +51,7 @@ struct omap2430_glue { }; #define glue_to_musb(g) platform_get_drvdata(g->musb) -struct omap2430_glue *_glue; +static struct omap2430_glue *_glue; static struct timer_list musb_idle_timer; -- cgit v1.1 From c4619bc6fa5149a6ab39be845a39142b6a996ea5 Mon Sep 17 00:00:00 2001 From: Sam Ravnborg Date: Mon, 4 Mar 2013 21:36:24 +0100 Subject: kbuild: fix make headers_check with make 3.80 Commit 10b63956 ("UAPI: Plumb the UAPI Kbuilds into the user header installation and checking") introduced a dependency of make 3.81 due to use of $(or ...) We do not want to lift the requirement to gmake 3.81 just yet... Included are a straightforward conversion to $(if ...) Bisected-and-tested-by: Tetsuo Handa Cc: David Howells Signed-off-by: Sam Ravnborg Cc: [v3.7+] Signed-off-by: Michal Marek --- scripts/Makefile.headersinst | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst index 25f216a..477d137 100644 --- a/scripts/Makefile.headersinst +++ b/scripts/Makefile.headersinst @@ -14,7 +14,7 @@ kbuild-file := $(srctree)/$(obj)/Kbuild include $(kbuild-file) # called may set destination dir (when installing to asm/) -_dst := $(or $(destination-y),$(dst),$(obj)) +_dst := $(if $(destination-y),$(destination-y),$(if $(dst),$(dst),$(obj))) old-kbuild-file := $(srctree)/$(subst uapi/,,$(obj))/Kbuild ifneq ($(wildcard $(old-kbuild-file)),) @@ -48,13 +48,14 @@ all-files := $(header-y) $(genhdr-y) $(wrapper-files) output-files := $(addprefix $(installdir)/, $(all-files)) input-files := $(foreach hdr, $(header-y), \ - $(or \ + $(if $(wildcard $(srcdir)/$(hdr)), \ $(wildcard $(srcdir)/$(hdr)), \ - $(wildcard $(oldsrcdir)/$(hdr)), \ - $(error Missing UAPI file $(srcdir)/$(hdr)) \ + $(if $(wildcard $(oldsrcdir)/$(hdr)), \ + $(wildcard $(oldsrcdir)/$(hdr)), \ + $(error Missing UAPI file $(srcdir)/$(hdr))) \ )) \ $(foreach hdr, $(genhdr-y), \ - $(or \ + $(if $(wildcard $(gendir)/$(hdr)), \ $(wildcard $(gendir)/$(hdr)), \ $(error Missing generated UAPI file $(gendir)/$(hdr)) \ )) -- cgit v1.1 From 2069d483b39a603a5f3428a19d3b4ac89aa97f48 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 5 Mar 2013 15:43:39 +0100 Subject: ALSA: vmaster: Fix slave change notification When a value of a vmaster slave control is changed, the ctl change notification is sometimes ignored. This happens when the master control overrides, e.g. when the corresponding master control is muted. The reason is that slave_put() returns the value of the actual slave put callback, and it doesn't reflect the virtual slave value change. This patch fixes the function just to return 1 whenever a slave value is changed. Cc: Signed-off-by: Takashi Iwai --- sound/core/vmaster.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 8575861..0097f36 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -213,7 +213,10 @@ static int slave_put(struct snd_kcontrol *kcontrol, } if (!changed) return 0; - return slave_put_val(slave, ucontrol); + err = slave_put_val(slave, ucontrol); + if (err < 0) + return err; + return 1; } static int slave_tlv_cmd(struct snd_kcontrol *kcontrol, -- cgit v1.1 From b0ad0995e92fdf6b25056da76c906c51bb06d6a5 Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Tue, 5 Mar 2013 13:09:40 +0200 Subject: ARM: OMAP: RX-51: add missing USB phy binding Commit 51482be9 (ARM: OMAP: USB: Add phy binding information) forgot to add phy binding for RX-51, and as a result USB does not work anymore on 3.9-rc1. Add the missing binding. Signed-off-by: Aaro Koskinen Reviewed-by: Kishon Vijay Abraham I Acked-by: Felipe Balbi Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-rx51.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-omap2/board-rx51.c b/arch/arm/mach-omap2/board-rx51.c index f7c4616..d2ea68e 100644 --- a/arch/arm/mach-omap2/board-rx51.c +++ b/arch/arm/mach-omap2/board-rx51.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -98,6 +99,7 @@ static void __init rx51_init(void) sdrc_params = nokia_get_sdram_timings(); omap_sdrc_init(sdrc_params, sdrc_params); + usb_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb"); usb_musb_init(&musb_board_data); rx51_peripherals_init(); -- cgit v1.1 From 154ea2893002618bc3f9a1e2d8186c65490968b1 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Tue, 5 Mar 2013 11:11:26 -0500 Subject: Btrfs: enforce min_bytes parameter during extent allocation Commit 24542bf7ea5e4fdfdb5157ff544c093fa4dcb536 changed preallocation of extents to cap the max size we try to allocate. It's a valid change, but the extent reservation code is also used by balance, and that can't tolerate a smaller extent being allocated. __btrfs_prealloc_file_range already has a min_size parameter, which is used by relocation to request a specific extent size. This commit adds an extra check to enforce that minimum extent size. Signed-off-by: Chris Mason Reported-by: Stefan Behrens --- fs/btrfs/inode.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index ecd9c4c..13ab4de 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8502,6 +8502,7 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, struct btrfs_key ins; u64 cur_offset = start; u64 i_size; + u64 cur_bytes; int ret = 0; bool own_trans = true; @@ -8516,8 +8517,9 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode, } } - ret = btrfs_reserve_extent(trans, root, - min(num_bytes, 256ULL * 1024 * 1024), + cur_bytes = min(num_bytes, 256ULL * 1024 * 1024); + cur_bytes = max(cur_bytes, min_size); + ret = btrfs_reserve_extent(trans, root, cur_bytes, min_size, 0, *alloc_hint, &ins, 1); if (ret) { if (own_trans) -- cgit v1.1 From 852afe99fc1c2d2b1376e49f128a3b929e811f2d Mon Sep 17 00:00:00 2001 From: Denis CIOCCA Date: Tue, 26 Feb 2013 10:43:00 +0000 Subject: iio:common:st_sensors fixed all warning messages about uninitialized variables Signed-off-by: Denis Ciocca Reported-by: Fengguang Wu Signed-off-by: Jonathan Cameron --- drivers/iio/common/st_sensors/st_sensors_core.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index 0198324..bd33473 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -62,7 +62,7 @@ st_sensors_match_odr_error: int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr) { int err; - struct st_sensor_odr_avl odr_out; + struct st_sensor_odr_avl odr_out = {0, 0}; struct st_sensor_data *sdata = iio_priv(indio_dev); err = st_sensors_match_odr(sdata->sensor, odr, &odr_out); @@ -114,7 +114,7 @@ st_sensors_match_odr_error: static int st_sensors_set_fullscale(struct iio_dev *indio_dev, unsigned int fs) { - int err, i; + int err, i = 0; struct st_sensor_data *sdata = iio_priv(indio_dev); err = st_sensors_match_fs(sdata->sensor, fs, &i); @@ -139,14 +139,13 @@ st_accel_set_fullscale_error: int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable) { - bool found; u8 tmp_value; int err = -EINVAL; - struct st_sensor_odr_avl odr_out; + bool found = false; + struct st_sensor_odr_avl odr_out = {0, 0}; struct st_sensor_data *sdata = iio_priv(indio_dev); if (enable) { - found = false; tmp_value = sdata->sensor->pw.value_on; if ((sdata->sensor->odr.addr == sdata->sensor->pw.addr) && (sdata->sensor->odr.mask == sdata->sensor->pw.mask)) { -- cgit v1.1 From 44498aea293b37af1d463acd9658cdce1ecdf427 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 22 Feb 2013 17:05:28 -0300 Subject: drm/i915: also disable south interrupts when handling them From the docs: "IIR can queue up to two interrupt events. When the IIR is cleared, it will set itself again after one clock if a second event was stored." "Only the rising edge of the PCH Display interrupt will cause the North Display IIR (DEIIR) PCH Display Interrupt even bit to be set, so all PCH Display Interrupts, including back to back interrupts, must be cleared before a new PCH Display interrupt can cause DEIIR to be set". The current code works fine because we don't get many interrupts, but if we enable the PCH FIFO underrun interrupts we'll start getting so many interrupts that at some point new PCH interrupts won't cause DEIIR to be set. The initial implementation I tried was to turn the code that checks SDEIIR into a loop, but we can still get interrupts even after the loop is done (and before the irq handler finishes), so we have to either disable the interrupts or mask them. In the end I concluded that just disabling the PCH interrupts is enough, you don't even need the loop, so this is what this patch implements. I've tested it and it passes the 2 "PCH FIFO underrun interrupt storms" I can reproduce: the "ironlake_crtc_disable" case and the "wrong watermarks" case. In other words, here's how to reproduce the problem fixed by this patch: 1 - Enable PCH FIFO underrun interrupts (SERR_INT on SNB+) 2 - Boot the machine 3 - While booting we'll get tons of PCH FIFO underrun interrupts 4 - Plug a new monitor 5 - Run xrandr, notice it won't detect the new monitor 6 - Read SDEIIR and notice it's not 0 while DEIIR is 0 Q: Can't we just clear DEIIR before SDEIIR? A: It doesn't work. SDEIIR has to be completely cleared (including the interrupts stored on its back queue) before it can flip DEIIR's bit to 1 again, and even while you're clearing it you'll be getting more and more interrupts. Q: Why does it work by just disabling+enabling the south interrupts? A: Because when we re-enable them, if there's something on the SDEIIR register (maybe an interrupt stored on the queue), the re-enabling will make DEIIR's bit flip to 1, and since we'll already have interrupts enabled we'll get another interrupt, then run our irq handler again to process the "back" interrupts. v2: Even bigger commit message, added code comments. Note that this fixes missed dp aux irqs which have been reported for 3.9-rc1. This regression has been introduced by switching to irq-driven dp aux transactions with commit 9ee32fea5fe810ec06af3a15e4c65478de56d4f5 Author: Daniel Vetter Date: Sat Dec 1 13:53:48 2012 +0100 drm/i915: irq-drive the dp aux communication References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18588.html References: https://lkml.org/lkml/2013/2/26/769 Tested-by: Imre Deak Reported-by: Sedat Dilek Reported-by: Linus Torvalds Signed-off-by: Paulo Zanoni [danvet: Pimp commit message with references for the dp aux irq timeout regression this fixes.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 2cd97d1..3c7bb04 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -701,7 +701,7 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) { struct drm_device *dev = (struct drm_device *) arg; drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; - u32 de_iir, gt_iir, de_ier, pm_iir; + u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier; irqreturn_t ret = IRQ_NONE; int i; @@ -711,6 +711,15 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) de_ier = I915_READ(DEIER); I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); + /* Disable south interrupts. We'll only write to SDEIIR once, so further + * interrupts will will be stored on its back queue, and then we'll be + * able to process them after we restore SDEIER (as soon as we restore + * it, we'll get an interrupt if SDEIIR still has something to process + * due to its back queue). */ + sde_ier = I915_READ(SDEIER); + I915_WRITE(SDEIER, 0); + POSTING_READ(SDEIER); + gt_iir = I915_READ(GTIIR); if (gt_iir) { snb_gt_irq_handler(dev, dev_priv, gt_iir); @@ -759,6 +768,8 @@ static irqreturn_t ivybridge_irq_handler(int irq, void *arg) I915_WRITE(DEIER, de_ier); POSTING_READ(DEIER); + I915_WRITE(SDEIER, sde_ier); + POSTING_READ(SDEIER); return ret; } @@ -778,7 +789,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) struct drm_device *dev = (struct drm_device *) arg; drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; int ret = IRQ_NONE; - u32 de_iir, gt_iir, de_ier, pm_iir; + u32 de_iir, gt_iir, de_ier, pm_iir, sde_ier; atomic_inc(&dev_priv->irq_received); @@ -787,6 +798,15 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) I915_WRITE(DEIER, de_ier & ~DE_MASTER_IRQ_CONTROL); POSTING_READ(DEIER); + /* Disable south interrupts. We'll only write to SDEIIR once, so further + * interrupts will will be stored on its back queue, and then we'll be + * able to process them after we restore SDEIER (as soon as we restore + * it, we'll get an interrupt if SDEIIR still has something to process + * due to its back queue). */ + sde_ier = I915_READ(SDEIER); + I915_WRITE(SDEIER, 0); + POSTING_READ(SDEIER); + de_iir = I915_READ(DEIIR); gt_iir = I915_READ(GTIIR); pm_iir = I915_READ(GEN6_PMIIR); @@ -849,6 +869,8 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) done: I915_WRITE(DEIER, de_ier); POSTING_READ(DEIER); + I915_WRITE(SDEIER, sde_ier); + POSTING_READ(SDEIER); return ret; } -- cgit v1.1 From 51c66cf9695f389126119e4cd7a50b832648f11e Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 5 Mar 2013 10:13:39 +0100 Subject: ARM: SPEAr13xx: Fix typo "ARCH_HAVE_CPUFREQ" Do what commit f12a500e4adcc0961803e54b5ed1e74275d399f1 ("ARM: SPEAr13xx: Enable CONFIG_ARCH_HAS_CPUFREQ") wanted to do. Signed-off-by: Paul Bolle Acked-by: Viresh Kumar Signed-off-by: Arnd Bergmann --- arch/arm/plat-spear/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/plat-spear/Kconfig b/arch/arm/plat-spear/Kconfig index 739d016..8a08c31 100644 --- a/arch/arm/plat-spear/Kconfig +++ b/arch/arm/plat-spear/Kconfig @@ -10,7 +10,7 @@ choice config ARCH_SPEAR13XX bool "ST SPEAr13xx with Device Tree" - select ARCH_HAVE_CPUFREQ + select ARCH_HAS_CPUFREQ select ARM_GIC select CPU_V7 select GPIO_SPEAR_SPICS -- cgit v1.1 From 576cfb404c9cab728e9462ea713f3422679d5cf7 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Mon, 4 Mar 2013 21:16:16 +0100 Subject: x86, smpboot: Remove unused variable The cpuinfo_x86 ptr is unused now. Drop it. Got obsolete by 69fb3676df33 ("x86 idle: remove mwait_idle() and "idle=mwait" cmdline param") removing its only user. [ hpa: fixes gcc warning ] Signed-off-by: Borislav Petkov Link: http://lkml.kernel.org/r/1362428180-8865-2-git-send-email-bp@alien8.de Cc: Len Brown Signed-off-by: H. Peter Anvin --- arch/x86/kernel/smpboot.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index a6ceaed..9f190a2 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -1365,9 +1365,8 @@ static inline void mwait_play_dead(void) unsigned int eax, ebx, ecx, edx; unsigned int highest_cstate = 0; unsigned int highest_subcstate = 0; - int i; void *mwait_ptr; - struct cpuinfo_x86 *c = __this_cpu_ptr(&cpu_info); + int i; if (!this_cpu_has(X86_FEATURE_MWAIT)) return; -- cgit v1.1 From ef9240f482e691e13a2d27208f60d1f1f5503545 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 5 Mar 2013 18:30:50 +0100 Subject: m68k: drop "select EMAC_INC" Somehow this select statement managed to squeeze itself between commit 0e152d80507b75c00aac60f2ffc586360687cd52 ("m68k: reorganize Kconfig options to improve mmu/non-mmu selections") and commit 95e82747d6e2abc513bfae416e6009968985d05b ("m68k: drop unused Kconfig symbols"). Whatever happened, there is no Kconfig symbol named EMAC_INC. The select statement for that symbol is a nop. Drop it. Signed-off-by: Paul Bolle Signed-off-by: Greg Ungerer --- arch/m68k/Kconfig.machine | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/m68k/Kconfig.machine b/arch/m68k/Kconfig.machine index 7cdf6b0..7240584 100644 --- a/arch/m68k/Kconfig.machine +++ b/arch/m68k/Kconfig.machine @@ -310,7 +310,6 @@ config COBRA5282 config SOM5282EM bool "EMAC.Inc SOM5282EM board support" depends on M528x - select EMAC_INC help Support for the EMAC.Inc SOM5282EM module. -- cgit v1.1 From 82968b7e8d6150fcea0b48488f7bf6fb25e7b099 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 5 Mar 2013 22:59:35 +0800 Subject: ASoC: wm5102: Apply a SYSCLK patch for later revs Evaluation has identified some performance improvements to the device. Signed-off-by: Mark Brown --- sound/soc/codecs/wm5102.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index deb1097..cef288c 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -573,6 +573,13 @@ static const struct reg_default wm5102_sysclk_reva_patch[] = { { 0x025e, 0x0112 }, }; +static const struct reg_default wm5102_sysclk_revb_patch[] = { + { 0x3081, 0x08FE }, + { 0x3083, 0x00ED }, + { 0x30C1, 0x08FE }, + { 0x30C3, 0x00ED }, +}; + static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { @@ -587,6 +594,10 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w, patch = wm5102_sysclk_reva_patch; patch_size = ARRAY_SIZE(wm5102_sysclk_reva_patch); break; + default: + patch = wm5102_sysclk_revb_patch; + patch_size = ARRAY_SIZE(wm5102_sysclk_revb_patch); + break; } switch (event) { -- cgit v1.1 From a4ed2e737cb73e4405a3649f8aef7619b99fecae Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 5 Mar 2013 06:09:04 +0000 Subject: net/irda: Fix port open counts Saving the port count bump is unsafe. If the tty is hung up while this open was blocking, the port count is zeroed. Explicitly check if the tty was hung up while blocking, and correct the port count if not. Signed-off-by: Peter Hurley Signed-off-by: David S. Miller --- net/irda/ircomm/ircomm_tty.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index 9a5fd3c..1721dc7 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -280,7 +280,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, struct tty_port *port = &self->port; DECLARE_WAITQUEUE(wait, current); int retval; - int do_clocal = 0, extra_count = 0; + int do_clocal = 0; unsigned long flags; IRDA_DEBUG(2, "%s()\n", __func__ ); @@ -315,10 +315,8 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, __FILE__, __LINE__, tty->driver->name, port->count); spin_lock_irqsave(&port->lock, flags); - if (!tty_hung_up_p(filp)) { - extra_count = 1; + if (!tty_hung_up_p(filp)) port->count--; - } spin_unlock_irqrestore(&port->lock, flags); port->blocked_open++; @@ -361,12 +359,10 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, __set_current_state(TASK_RUNNING); remove_wait_queue(&port->open_wait, &wait); - if (extra_count) { - /* ++ is not atomic, so this should be protected - Jean II */ - spin_lock_irqsave(&port->lock, flags); + spin_lock_irqsave(&port->lock, flags); + if (!tty_hung_up_p(filp)) port->count++; - spin_unlock_irqrestore(&port->lock, flags); - } + spin_unlock_irqrestore(&port->lock, flags); port->blocked_open--; IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n", -- cgit v1.1 From 2f7c069b96ed7b1f6236f2fa7b0bc06f4f54f2d9 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 5 Mar 2013 06:09:05 +0000 Subject: net/irda: Hold port lock while bumping blocked_open Although tty_lock() already protects concurrent update to blocked_open, that fails to meet the separation-of-concerns between tty_port and tty. Signed-off-by: Peter Hurley Signed-off-by: David S. Miller --- net/irda/ircomm/ircomm_tty.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index 1721dc7..d282bbe 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -317,8 +317,8 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, spin_lock_irqsave(&port->lock, flags); if (!tty_hung_up_p(filp)) port->count--; - spin_unlock_irqrestore(&port->lock, flags); port->blocked_open++; + spin_unlock_irqrestore(&port->lock, flags); while (1) { if (tty->termios.c_cflag & CBAUD) @@ -362,8 +362,8 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, spin_lock_irqsave(&port->lock, flags); if (!tty_hung_up_p(filp)) port->count++; - spin_unlock_irqrestore(&port->lock, flags); port->blocked_open--; + spin_unlock_irqrestore(&port->lock, flags); IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n", __FILE__, __LINE__, tty->driver->name, port->count); -- cgit v1.1 From 0b176ce3a7cbfa92eceddf3896f1a504877d974a Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 5 Mar 2013 06:09:06 +0000 Subject: net/irda: Use barrier to set task state Without a memory and compiler barrier, the task state change can migrate relative to the condition testing in a blocking loop. However, the task state change must be visible across all cpus prior to testing those conditions. Failing to do this can result in the familiar 'lost wakeup' and this task will hang until killed. Signed-off-by: Peter Hurley Signed-off-by: David S. Miller --- net/irda/ircomm/ircomm_tty.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index d282bbe..522543d 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -324,7 +324,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, if (tty->termios.c_cflag & CBAUD) tty_port_raise_dtr_rts(port); - current->state = TASK_INTERRUPTIBLE; + set_current_state(TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || !test_bit(ASYNCB_INITIALIZED, &port->flags)) { -- cgit v1.1 From f74861ca87264e594e0134e8ac14db06be77fe6f Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Tue, 5 Mar 2013 06:09:07 +0000 Subject: net/irda: Raise dtr in non-blocking open DTR/RTS need to be raised, regardless of the open() mode, but not if the port has already shutdown. Signed-off-by: Peter Hurley Signed-off-by: David S. Miller --- net/irda/ircomm/ircomm_tty.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c index 522543d..362ba47 100644 --- a/net/irda/ircomm/ircomm_tty.c +++ b/net/irda/ircomm/ircomm_tty.c @@ -289,8 +289,15 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self, * If non-blocking mode is set, or the port is not enabled, * then make the check up front and then exit. */ - if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){ - /* nonblock mode is set or port is not enabled */ + if (test_bit(TTY_IO_ERROR, &tty->flags)) { + port->flags |= ASYNC_NORMAL_ACTIVE; + return 0; + } + + if (filp->f_flags & O_NONBLOCK) { + /* nonblock mode is set */ + if (tty->termios.c_cflag & CBAUD) + tty_port_raise_dtr_rts(port); port->flags |= ASYNC_NORMAL_ACTIVE; IRDA_DEBUG(1, "%s(), O_NONBLOCK requested!\n", __func__ ); return 0; -- cgit v1.1 From 9b99b7e90bf5cd9a88823c49574ba80d92a98262 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:04:57 +0000 Subject: pkt_sched: sch_qfq: properly cap timestamps in charge_actual_service QFQ+ schedules the active aggregates in a group using a bucket list (one list per group). The bucket in which each aggregate is inserted depends on the aggregate's timestamps, and the number of buckets in a group is enough to accomodate the possible (range of) values of the timestamps of all the aggregates in the group. For this property to hold, timestamps must however be computed correctly. One necessary condition for computing timestamps correctly is that the number of bits dequeued for each aggregate, while the aggregate is in service, does not exceed the maximum budget budgetmax assigned to the aggregate. For each aggregate, budgetmax is proportional to the number of classes in the aggregate. If the number of classes of the aggregate is decreased through qfq_change_class(), then budgetmax is decreased automatically as well. Problems may occur if the aggregate is in service when budgetmax is decreased, because the current remaining budget of the aggregate and/or the service already received by the aggregate may happen to be larger than the new value of budgetmax. In this case, when the aggregate is eventually deselected and its timestamps are updated, the aggregate may happen to have received an amount of service larger than budgetmax. This may cause the aggregate to be assigned a higher virtual finish time than the maximum acceptable value for the last bucket in the bucket list of the group. This fix introduces a cap that addresses this issue. Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index e9a77f6..489edd9 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -298,6 +298,10 @@ static void qfq_update_agg(struct qfq_sched *q, struct qfq_aggregate *agg, new_num_classes == q->max_agg_classes - 1) /* agg no more full */ hlist_add_head(&agg->nonfull_next, &q->nonfull_aggs); + /* The next assignment may let + * agg->initial_budget > agg->budgetmax + * hold, we will take it into account in charge_actual_service(). + */ agg->budgetmax = new_num_classes * agg->lmax; new_agg_weight = agg->class_weight * new_num_classes; agg->inv_w = ONE_FP/new_agg_weight; @@ -988,8 +992,13 @@ static inline struct sk_buff *qfq_peek_skb(struct qfq_aggregate *agg, /* Update F according to the actual service received by the aggregate. */ static inline void charge_actual_service(struct qfq_aggregate *agg) { - /* compute the service received by the aggregate */ - u32 service_received = agg->initial_budget - agg->budget; + /* Compute the service received by the aggregate, taking into + * account that, after decreasing the number of classes in + * agg, it may happen that + * agg->initial_budget - agg->budget > agg->bugdetmax + */ + u32 service_received = min(agg->budgetmax, + agg->initial_budget - agg->budget); agg->F = agg->S + (u64)service_received * agg->inv_w; } -- cgit v1.1 From 624b85fb96206879c8146abdba071222bbd25259 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:04:58 +0000 Subject: pkt_sched: sch_qfq: fix the update of eligible-group sets Between two invocations of make_eligible, the system virtual time may happen to grow enough that, in its binary representation, a bit with higher order than 31 flips. This happens especially with TSO/GSO. Before this fix, the mask used in make_eligible was computed as (1UL< 31. The fix just replaces 1UL with 1ULL. Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index 489edd9..39d85cc 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -821,7 +821,7 @@ static void qfq_make_eligible(struct qfq_sched *q) unsigned long old_vslot = q->oldV >> q->min_slot_shift; if (vslot != old_vslot) { - unsigned long mask = (1UL << fls(vslot ^ old_vslot)) - 1; + unsigned long mask = (1ULL << fls(vslot ^ old_vslot)) - 1; qfq_move_groups(q, mask, IR, ER); qfq_move_groups(q, mask, IB, EB); } -- cgit v1.1 From 2f3b89a1fe0823fceb544856c9eeb036a75ff091 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:04:59 +0000 Subject: pkt_sched: sch_qfq: serve activated aggregates immediately if the scheduler is empty If no aggregate is in service, then the function qfq_dequeue() does not dequeue any packet. For this reason, to guarantee QFQ+ to be work conserving, a just-activated aggregate must be set as in service immediately if it happens to be the only active aggregate. This is done by the function qfq_enqueue(). Unfortunately, the function qfq_add_to_agg(), used to add a class to an aggregate, does not perform this important additional operation. In particular, if: 1) qfq_add_to_agg() is invoked to complete the move of a class from a source aggregate, becoming, for this move, inactive, to a destination aggregate, becoming instead active, and 2) the destination aggregate becomes the only active aggregate, then this aggregate is not however set as in service. QFQ+ remains then in a non-work-conserving state until a new invocation of qfq_enqueue() recovers the situation. This fix solves the problem by moving the logic for setting an aggregate as in service directly into the function qfq_activate_agg(). Hence, from whatever point qfq_activate_aggregate() is invoked, QFQ+ remains work conserving. Since the more-complex logic of this new version of activate_aggregate() is not necessary, in qfq_dequeue(), to reschedule an aggregate that finishes its budget, then the aggregate is now rescheduled by invoking directly the functions needed. Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 36 ++++++++++++++++++++++-------------- 1 file changed, 22 insertions(+), 14 deletions(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index 39d85cc..8c5172c 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -1003,6 +1003,12 @@ static inline void charge_actual_service(struct qfq_aggregate *agg) agg->F = agg->S + (u64)service_received * agg->inv_w; } +static inline void qfq_update_agg_ts(struct qfq_sched *q, + struct qfq_aggregate *agg, + enum update_reason reason); + +static void qfq_schedule_agg(struct qfq_sched *q, struct qfq_aggregate *agg); + static struct sk_buff *qfq_dequeue(struct Qdisc *sch) { struct qfq_sched *q = qdisc_priv(sch); @@ -1030,7 +1036,7 @@ static struct sk_buff *qfq_dequeue(struct Qdisc *sch) in_serv_agg->initial_budget = in_serv_agg->budget = in_serv_agg->budgetmax; - if (!list_empty(&in_serv_agg->active)) + if (!list_empty(&in_serv_agg->active)) { /* * Still active: reschedule for * service. Possible optimization: if no other @@ -1041,8 +1047,9 @@ static struct sk_buff *qfq_dequeue(struct Qdisc *sch) * handle it, we would need to maintain an * extra num_active_aggs field. */ - qfq_activate_agg(q, in_serv_agg, requeue); - else if (sch->q.qlen == 0) { /* no aggregate to serve */ + qfq_update_agg_ts(q, in_serv_agg, requeue); + qfq_schedule_agg(q, in_serv_agg); + } else if (sch->q.qlen == 0) { /* no aggregate to serve */ q->in_serv_agg = NULL; return NULL; } @@ -1226,17 +1233,11 @@ static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch) cl->deficit = agg->lmax; list_add_tail(&cl->alist, &agg->active); - if (list_first_entry(&agg->active, struct qfq_class, alist) != cl) - return err; /* aggregate was not empty, nothing else to do */ - - /* recharge budget */ - agg->initial_budget = agg->budget = agg->budgetmax; + if (list_first_entry(&agg->active, struct qfq_class, alist) != cl || + q->in_serv_agg == agg) + return err; /* non-empty or in service, nothing else to do */ - qfq_update_agg_ts(q, agg, enqueue); - if (q->in_serv_agg == NULL) - q->in_serv_agg = agg; - else if (agg != q->in_serv_agg) - qfq_schedule_agg(q, agg); + qfq_activate_agg(q, agg, enqueue); return err; } @@ -1293,8 +1294,15 @@ skip_update: static void qfq_activate_agg(struct qfq_sched *q, struct qfq_aggregate *agg, enum update_reason reason) { + agg->initial_budget = agg->budget = agg->budgetmax; /* recharge budg. */ + qfq_update_agg_ts(q, agg, reason); - qfq_schedule_agg(q, agg); + if (q->in_serv_agg == NULL) { /* no aggr. in service or scheduled */ + q->in_serv_agg = agg; /* start serving this aggregate */ + /* update V: to be in service, agg must be eligible */ + q->oldV = q->V = agg->S; + } else if (agg != q->in_serv_agg) + qfq_schedule_agg(q, agg); } static void qfq_slot_remove(struct qfq_sched *q, struct qfq_group *grp, -- cgit v1.1 From a0143efa96671dc51dab9bba776a66f9bfa1757f Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:05:00 +0000 Subject: pkt_sched: sch_qfq: prevent budget from wrapping around after a dequeue Aggregate budgets are computed so as to guarantee that, after an aggregate has been selected for service, that aggregate has enough budget to serve at least one maximum-size packet for the classes it contains. For this reason, after a new aggregate has been selected for service, its next packet is immediately dequeued, without any further control. The maximum packet size for a class, lmax, can be changed through qfq_change_class(). In case the user sets lmax to a lower value than the the size of some of the still-to-arrive packets, QFQ+ will automatically push up lmax as it enqueues these packets. This automatic push up is likely to happen with TSO/GSO. In any case, if lmax is assigned a lower value than the size of some of the packets already enqueued for the class, then the following problem may occur: the size of the next packet to dequeue for the class may happen to be larger than lmax, after the aggregate to which the class belongs has been just selected for service. In this case, even the budget of the aggregate, which is an unsigned value, may be lower than the size of the next packet to dequeue. After dequeueing this packet and subtracting its size from the budget, the latter would wrap around. This fix prevents the budget from wrapping around after any packet dequeue. Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index 8c5172c..c34af93 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -1068,7 +1068,15 @@ static struct sk_buff *qfq_dequeue(struct Qdisc *sch) qdisc_bstats_update(sch, skb); agg_dequeue(in_serv_agg, cl, len); - in_serv_agg->budget -= len; + /* If lmax is lowered, through qfq_change_class, for a class + * owning pending packets with larger size than the new value + * of lmax, then the following condition may hold. + */ + if (unlikely(in_serv_agg->budget < len)) + in_serv_agg->budget = 0; + else + in_serv_agg->budget -= len; + q->V += (u64)len * IWSUM; pr_debug("qfq dequeue: len %u F %lld now %lld\n", len, (unsigned long long) in_serv_agg->F, -- cgit v1.1 From 40dd2d546198e7bbb8d3fe718957b158caa3fe52 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:05:01 +0000 Subject: pkt_sched: sch_qfq: do not allow virtual time to jump if an aggregate is in service By definition of (the algorithm of) QFQ+, the system virtual time must be pushed up only if there is no 'eligible' aggregate, i.e. no aggregate that would have started to be served also in the ideal system emulated by QFQ+. QFQ+ serves only eligible aggregates, hence the aggregate currently in service is eligible. As a consequence, to decide whether there is no eligible aggregate, QFQ+ must also check whether there is no aggregate in service. Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index c34af93..6b7ce80 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -1279,7 +1279,8 @@ static void qfq_schedule_agg(struct qfq_sched *q, struct qfq_aggregate *agg) /* group was surely ineligible, remove */ __clear_bit(grp->index, &q->bitmaps[IR]); __clear_bit(grp->index, &q->bitmaps[IB]); - } else if (!q->bitmaps[ER] && qfq_gt(roundedS, q->V)) + } else if (!q->bitmaps[ER] && qfq_gt(roundedS, q->V) && + q->in_serv_agg == NULL) q->V = roundedS; grp->S = roundedS; -- cgit v1.1 From 76e4cb0d3a583900f844f1704b19b7e8c5df8837 Mon Sep 17 00:00:00 2001 From: Paolo Valente Date: Tue, 5 Mar 2013 08:05:02 +0000 Subject: pkt_sched: sch_qfq: remove a useless invocation of qfq_update_eligible QFQ+ can select for service only 'eligible' aggregates, i.e., aggregates that would have started to be served also in the emulated ideal system. As a consequence, for QFQ+ to be work conserving, at least one of the active aggregates must be eligible when it is time to choose the next aggregate to serve. The set of eligible aggregates is updated through the function qfq_update_eligible(), which does guarantee that, after its invocation, at least one of the active aggregates is eligible. Because of this property, this function is invoked in qfq_deactivate_agg() to guarantee that at least one of the active aggregates is still eligible after an aggregate has been deactivated. In particular, the critical case is when there are other active aggregates, but the aggregate being deactivated happens to be the only one eligible. However, this precaution is not needed for QFQ+ to be work conserving, because update_eligible() is always invoked also at the beginning of qfq_choose_next_agg(). This patch removes the additional invocation of update_eligible() in qfq_deactivate_agg(). Signed-off-by: Paolo Valente Reviewed-by: Fabio Checconi Signed-off-by: David S. Miller --- net/sched/sch_qfq.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c index 6b7ce80..d51852b 100644 --- a/net/sched/sch_qfq.c +++ b/net/sched/sch_qfq.c @@ -1383,8 +1383,6 @@ static void qfq_deactivate_agg(struct qfq_sched *q, struct qfq_aggregate *agg) __set_bit(grp->index, &q->bitmaps[s]); } } - - qfq_update_eligible(q); } static void qfq_qlen_notify(struct Qdisc *sch, unsigned long arg) -- cgit v1.1 From 88c4c066c6b4db26dc4909ee94e6bf377e8e8e81 Mon Sep 17 00:00:00 2001 From: Zang MingJie Date: Mon, 4 Mar 2013 06:07:34 +0000 Subject: reset nf before xmit vxlan encapsulated packet We should reset nf settings bond to the skb as ipip/ipgre do. If not, the conntrack/nat info bond to the origin packet may continually redirect the packet to vxlan interface causing a routing loop. this is the scenario: VETP VXLAN Gateway /----\ /---------------\ | | | | | vx+--+vx --NAT-> eth0+--> Internet | | | | \----/ \---------------/ when there are any packet coming from internet to the vetp, there will be lots of garbage packets coming out the gateway's vxlan interface, but none actually sent to the physical interface, because they are redirected back to the vxlan interface in the postrouting chain of NAT rule, and dmesg complains: Mar 1 21:52:53 debian kernel: [ 8802.997699] Dead loop on virtual device vxlan0, fix it urgently! Mar 1 21:52:54 debian kernel: [ 8804.004907] Dead loop on virtual device vxlan0, fix it urgently! Mar 1 21:52:55 debian kernel: [ 8805.012189] Dead loop on virtual device vxlan0, fix it urgently! Mar 1 21:52:56 debian kernel: [ 8806.020593] Dead loop on virtual device vxlan0, fix it urgently! the patch should fix the problem Signed-off-by: Zang MingJie Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index f10e58a..c3e3d29 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -961,6 +961,8 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev) iph->ttl = ttl ? : ip4_dst_hoplimit(&rt->dst); tunnel_ip_select_ident(skb, old_iph, &rt->dst); + nf_reset(skb); + vxlan_set_owner(dev, skb); /* See iptunnel_xmit() */ -- cgit v1.1 From 691b3b7e1329141acf1e5ed44d8b468cea065fe3 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 4 Mar 2013 12:32:43 +0000 Subject: net: fix new kernel-doc warnings in net core Fix new kernel-doc warnings in net/core/dev.c: Warning(net/core/dev.c:4788): No description found for parameter 'new_carrier' Warning(net/core/dev.c:4788): Excess function parameter 'new_carries' description in 'dev_change_carrier' Signed-off-by: Randy Dunlap Signed-off-by: David S. Miller --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index a06a7a5..5ca8734 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4780,7 +4780,7 @@ EXPORT_SYMBOL(dev_set_mac_address); /** * dev_change_carrier - Change device carrier * @dev: device - * @new_carries: new value + * @new_carrier: new value * * Change device carrier */ -- cgit v1.1 From d1f41b67ff7735193bc8b418b98ac99a448833e2 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 5 Mar 2013 07:15:13 +0000 Subject: net: reduce net_rx_action() latency to 2 HZ We should use time_after_eq() to get maximum latency of two ticks, instead of three. Bug added in commit 24f8b2385 (net: increase receive packet quantum) Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index 5ca8734..8f152f9 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -4103,7 +4103,7 @@ static void net_rx_action(struct softirq_action *h) * Allow this to run for 2 jiffies since which will allow * an average latency of 1.5/HZ. */ - if (unlikely(budget <= 0 || time_after(jiffies, time_limit))) + if (unlikely(budget <= 0 || time_after_eq(jiffies, time_limit))) goto softnet_break; local_irq_enable(); -- cgit v1.1 From fa2b04f4502d74659e4e4b1294c6d88e08ece032 Mon Sep 17 00:00:00 2001 From: David Ward Date: Tue, 5 Mar 2013 17:06:32 +0000 Subject: net/ipv4: Timestamp option cannot overflow with prespecified addresses When a router forwards a packet that contains the IPv4 timestamp option, if there is no space left in the option for the router to add its own timestamp, then the router increments the Overflow value in the option. However, if the addresses of the routers are prespecified in the option, then the overflow condition cannot happen: the option is structured so that each prespecified router has a place to write its timestamp. Other routers do not add a timestamp, so there will never be a lack of space. This fix ensures that the Overflow value in the IPv4 timestamp option is not incremented when the addresses of the routers are prespecified, even if the Pointer value is greater than the Length value. Signed-off-by: David Ward Signed-off-by: David S. Miller --- net/ipv4/ip_options.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c index f6289bf..310a364 100644 --- a/net/ipv4/ip_options.c +++ b/net/ipv4/ip_options.c @@ -423,7 +423,7 @@ int ip_options_compile(struct net *net, put_unaligned_be32(midtime, timeptr); opt->is_changed = 1; } - } else { + } else if ((optptr[3]&0xF) != IPOPT_TS_PRESPEC) { unsigned int overflow = optptr[3]>>4; if (overflow == 15) { pp_ptr = optptr + 3; -- cgit v1.1 From 66d29cbc59433ba538922a9e958495156b31b83b Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Sun, 3 Mar 2013 21:48:46 +0000 Subject: benet: Wait f/w POST until timeout While PCI card faces EEH errors, reset (usually hot reset) is expected to recover from the EEH errors. After EEH core finishes the reset, the driver callback (be_eeh_reset) is called and wait the firmware to complete POST successfully. The original code would return with error once detecting failure during POST stage. That seems not enough. The patch forces the driver (be_eeh_reset) to wait the firmware completes POST until timeout, instead of returning error upon detection POST failure immediately. Also, it would improve the reliability of the EEH funtionality of the driver. Signed-off-by: Gavin Shan Acked-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be_cmds.c | 27 ++++++++++----------------- 1 file changed, 10 insertions(+), 17 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index 071aea7..813407f6 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -473,7 +473,7 @@ static int be_mbox_notify_wait(struct be_adapter *adapter) return 0; } -static int be_POST_stage_get(struct be_adapter *adapter, u16 *stage) +static void be_POST_stage_get(struct be_adapter *adapter, u16 *stage) { u32 sem; u32 reg = skyhawk_chip(adapter) ? SLIPORT_SEMAPHORE_OFFSET_SH : @@ -481,11 +481,6 @@ static int be_POST_stage_get(struct be_adapter *adapter, u16 *stage) pci_read_config_dword(adapter->pdev, reg, &sem); *stage = sem & POST_STAGE_MASK; - - if ((sem >> POST_ERR_SHIFT) & POST_ERR_MASK) - return -1; - else - return 0; } int lancer_wait_ready(struct be_adapter *adapter) @@ -579,19 +574,17 @@ int be_fw_wait_ready(struct be_adapter *adapter) } do { - status = be_POST_stage_get(adapter, &stage); - if (status) { - dev_err(dev, "POST error; stage=0x%x\n", stage); - return -1; - } else if (stage != POST_STAGE_ARMFW_RDY) { - if (msleep_interruptible(2000)) { - dev_err(dev, "Waiting for POST aborted\n"); - return -EINTR; - } - timeout += 2; - } else { + be_POST_stage_get(adapter, &stage); + if (stage == POST_STAGE_ARMFW_RDY) return 0; + + dev_info(dev, "Waiting for POST, %ds elapsed\n", + timeout); + if (msleep_interruptible(2000)) { + dev_err(dev, "Waiting for POST aborted\n"); + return -EINTR; } + timeout += 2; } while (timeout < 60); dev_err(dev, "POST timeout; stage=0x%x\n", stage); -- cgit v1.1 From 4ecccd9edd5eb4dd185486e6e593c671484691bc Mon Sep 17 00:00:00 2001 From: "Li, Zhen-Hua" Date: Wed, 6 Mar 2013 10:43:17 +0800 Subject: iommu, x86: Add DMA remap fault reason The number of DMA fault reasons in intel's document are from 1 to 0xD, but in dmar.c fault reason 0xD is not printed out. In this document: "Intel Virtualization Technology for Directed I/O Architecture Specification" http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Direct_IO.pdf Chapter 4. Support For Device-IOTLBs Table 6. Unsuccessful Translated Requests There is fault reason for 0xD not listed in kernel: Present context-entry used to process translation request specifies blocking of Translation Requests (Translation Type (T) field value not equal to 01b). This patch adds reason 0xD as well. Signed-off-by: Li, Zhen-Hua Cc: Joerg Roedel Cc: Donald Dutile Cc: Suresh Siddha Cc: Hannes Reinecke Link: http://lkml.kernel.org/r/1362537797-6034-1-git-send-email-zhen-hual@hp.com Signed-off-by: Ingo Molnar --- drivers/iommu/dmar.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index dc7e478..e5cdaf8 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1083,6 +1083,7 @@ static const char *dma_remap_fault_reasons[] = "non-zero reserved fields in RTP", "non-zero reserved fields in CTP", "non-zero reserved fields in PTE", + "PCE for translation request specifies blocking", }; static const char *irq_remap_fault_reasons[] = -- cgit v1.1 From 60222c0c2b4d813c72296b55f07d46b19ef83e44 Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Tue, 5 Mar 2013 19:09:37 +0100 Subject: drm/i915: Fix incorrect definition of ADPA HSYNC and VSYNC bits MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Disable bits for ADPA HSYNC and VSYNC where mixed up resulting in suspend becoming standby and vice versa. Fixed by swapping their bit position. Reported-by: Ville Syrjälä Signed-off-by: Patrik Jakobsson Reviewed-by: Eric Anholt Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 527b664..848992f 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -1613,9 +1613,9 @@ #define ADPA_CRT_HOTPLUG_FORCE_TRIGGER (1<<16) #define ADPA_USE_VGA_HVPOLARITY (1<<15) #define ADPA_SETS_HVPOLARITY 0 -#define ADPA_VSYNC_CNTL_DISABLE (1<<11) +#define ADPA_VSYNC_CNTL_DISABLE (1<<10) #define ADPA_VSYNC_CNTL_ENABLE 0 -#define ADPA_HSYNC_CNTL_DISABLE (1<<10) +#define ADPA_HSYNC_CNTL_DISABLE (1<<11) #define ADPA_HSYNC_CNTL_ENABLE 0 #define ADPA_VSYNC_ACTIVE_HIGH (1<<4) #define ADPA_VSYNC_ACTIVE_LOW 0 -- cgit v1.1 From 68d929862e29a8b52a7f2f2f86a0600423b093cd Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Sat, 2 Mar 2013 19:40:17 -0500 Subject: efi: be more paranoid about available space when creating variables UEFI variables are typically stored in flash. For various reasons, avaiable space is typically not reclaimed immediately upon the deletion of a variable - instead, the system will garbage collect during initialisation after a reboot. Some systems appear to handle this garbage collection extremely poorly, failing if more than 50% of the system flash is in use. This can result in the machine refusing to boot. The safest thing to do for the moment is to forbid writes if they'd end up using more than half of the storage space. We can make this more finegrained later if we come up with a method for identifying the broken machines. Signed-off-by: Matthew Garrett Cc: Josh Boyer Cc: Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 106 +++++++++++++++++++++++++++++++++------------ 1 file changed, 79 insertions(+), 27 deletions(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 7320bf8..0d50497 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -426,6 +426,44 @@ get_var_data(struct efivars *efivars, struct efi_variable *var) return status; } +static efi_status_t +check_var_size_locked(struct efivars *efivars, u32 attributes, + unsigned long size) +{ + u64 storage_size, remaining_size, max_size; + efi_status_t status; + const struct efivar_operations *fops = efivars->ops; + + if (!efivars->ops->query_variable_info) + return EFI_UNSUPPORTED; + + status = fops->query_variable_info(attributes, &storage_size, + &remaining_size, &max_size); + + if (status != EFI_SUCCESS) + return status; + + if (!storage_size || size > remaining_size || size > max_size || + (remaining_size - size) < (storage_size / 2)) + return EFI_OUT_OF_RESOURCES; + + return status; +} + + +static efi_status_t +check_var_size(struct efivars *efivars, u32 attributes, unsigned long size) +{ + efi_status_t status; + unsigned long flags; + + spin_lock_irqsave(&efivars->lock, flags); + status = check_var_size_locked(efivars, attributes, size); + spin_unlock_irqrestore(&efivars->lock, flags); + + return status; +} + static ssize_t efivar_guid_read(struct efivar_entry *entry, char *buf) { @@ -547,11 +585,16 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count) } spin_lock_irq(&efivars->lock); - status = efivars->ops->set_variable(new_var->VariableName, - &new_var->VendorGuid, - new_var->Attributes, - new_var->DataSize, - new_var->Data); + + status = check_var_size_locked(efivars, new_var->Attributes, + new_var->DataSize + utf16_strsize(new_var->VariableName, 1024)); + + if (status == EFI_SUCCESS || status == EFI_UNSUPPORTED) + status = efivars->ops->set_variable(new_var->VariableName, + &new_var->VendorGuid, + new_var->Attributes, + new_var->DataSize, + new_var->Data); spin_unlock_irq(&efivars->lock); @@ -702,8 +745,7 @@ static ssize_t efivarfs_file_write(struct file *file, u32 attributes; struct inode *inode = file->f_mapping->host; unsigned long datasize = count - sizeof(attributes); - unsigned long newdatasize; - u64 storage_size, remaining_size, max_size; + unsigned long newdatasize, varsize; ssize_t bytes = 0; if (count < sizeof(attributes)) @@ -722,28 +764,18 @@ static ssize_t efivarfs_file_write(struct file *file, * amounts of memory. Pick a default size of 64K if * QueryVariableInfo() isn't supported by the firmware. */ - spin_lock_irq(&efivars->lock); - if (!efivars->ops->query_variable_info) - status = EFI_UNSUPPORTED; - else { - const struct efivar_operations *fops = efivars->ops; - status = fops->query_variable_info(attributes, &storage_size, - &remaining_size, &max_size); - } - - spin_unlock_irq(&efivars->lock); + varsize = datasize + utf16_strsize(var->var.VariableName, 1024); + status = check_var_size(efivars, attributes, varsize); if (status != EFI_SUCCESS) { if (status != EFI_UNSUPPORTED) return efi_status_to_err(status); - remaining_size = 65536; + if (datasize > 65536) + return -ENOSPC; } - if (datasize > remaining_size) - return -ENOSPC; - data = kmalloc(datasize, GFP_KERNEL); if (!data) return -ENOMEM; @@ -765,6 +797,19 @@ static ssize_t efivarfs_file_write(struct file *file, */ spin_lock_irq(&efivars->lock); + /* + * Ensure that the available space hasn't shrunk below the safe level + */ + + status = check_var_size_locked(efivars, attributes, varsize); + + if (status != EFI_SUCCESS && status != EFI_UNSUPPORTED) { + spin_unlock_irq(&efivars->lock); + kfree(data); + + return efi_status_to_err(status); + } + status = efivars->ops->set_variable(var->var.VariableName, &var->var.VendorGuid, attributes, datasize, @@ -1345,7 +1390,6 @@ static int efi_pstore_write(enum pstore_type_id type, efi_guid_t vendor = LINUX_EFI_CRASH_GUID; struct efivars *efivars = psi->data; int i, ret = 0; - u64 storage_space, remaining_space, max_variable_size; efi_status_t status = EFI_NOT_FOUND; unsigned long flags; @@ -1365,11 +1409,11 @@ static int efi_pstore_write(enum pstore_type_id type, * size: a size of logging data * DUMP_NAME_LEN * 2: a maximum size of variable name */ - status = efivars->ops->query_variable_info(PSTORE_EFI_ATTRIBUTES, - &storage_space, - &remaining_space, - &max_variable_size); - if (status || remaining_space < size + DUMP_NAME_LEN * 2) { + + status = check_var_size_locked(efivars, PSTORE_EFI_ATTRIBUTES, + size + DUMP_NAME_LEN * 2); + + if (status) { spin_unlock_irqrestore(&efivars->lock, flags); *id = part; return -ENOSPC; @@ -1544,6 +1588,14 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj, return -EINVAL; } + status = check_var_size_locked(efivars, new_var->Attributes, + new_var->DataSize + utf16_strsize(new_var->VariableName, 1024)); + + if (status && status != EFI_UNSUPPORTED) { + spin_unlock_irq(&efivars->lock); + return efi_status_to_err(status); + } + /* now *really* create the variable via EFI */ status = efivars->ops->set_variable(new_var->VariableName, &new_var->VendorGuid, -- cgit v1.1 From 123abd76edf56c02a76b46d3d673897177ef067b Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Tue, 5 Mar 2013 07:40:16 +0000 Subject: efivars: efivarfs_valid_name() should handle pstore syntax Stricter validation was introduced with commit da27a24383b2b ("efivarfs: guid part of filenames are case-insensitive") and commit 47f531e8ba3b ("efivarfs: Validate filenames much more aggressively"), which is necessary for the guid portion of efivarfs filenames, but we don't need to be so strict with the first part, the variable name. The UEFI specification doesn't impose any constraints on variable names other than they be a NULL-terminated string. The above commits caused a regression that resulted in users seeing the following message, $ sudo mount -v /sys/firmware/efi/efivars mount: Cannot allocate memory whenever pstore EFI variables were present in the variable store, since their variable names failed to pass the following check, /* GUID should be right after the first '-' */ if (s - 1 != strchr(str, '-')) as a typical pstore filename is of the form, dump-type0-10-1-. The fix is trivial since the guid portion of the filename is GUID_LEN bytes, we can use (len - GUID_LEN) to ensure the '-' character is where we expect it to be. (The bogus ENOMEM error value will be fixed in a separate patch.) Reported-by: Joseph Yasi Tested-by: Joseph Yasi Reported-by: Lingzhu Xiang Cc: Josh Boyer Cc: Jeremy Kerr Cc: Matthew Garrett Cc: # v3.8 Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 4 +- tools/testing/selftests/efivarfs/efivarfs.sh | 59 ++++++++++++++++++++++++++++ 2 files changed, 61 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 0d50497..1b9a6e1 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -974,8 +974,8 @@ static bool efivarfs_valid_name(const char *str, int len) if (len < GUID_LEN + 2) return false; - /* GUID should be right after the first '-' */ - if (s - 1 != strchr(str, '-')) + /* GUID must be preceded by a '-' */ + if (*(s - 1) != '-') return false; /* diff --git a/tools/testing/selftests/efivarfs/efivarfs.sh b/tools/testing/selftests/efivarfs/efivarfs.sh index 880cdd5..77edcdc 100644 --- a/tools/testing/selftests/efivarfs/efivarfs.sh +++ b/tools/testing/selftests/efivarfs/efivarfs.sh @@ -125,6 +125,63 @@ test_open_unlink() ./open-unlink $file } +# test that we can create a range of filenames +test_valid_filenames() +{ + local attrs='\x07\x00\x00\x00' + local ret=0 + + local file_list="abc dump-type0-11-1-1362436005 1234 -" + for f in $file_list; do + local file=$efivarfs_mount/$f-$test_guid + + printf "$attrs\x00" > $file + + if [ ! -e $file ]; then + echo "$file could not be created" >&2 + ret=1 + else + rm $file + fi + done + + exit $ret +} + +test_invalid_filenames() +{ + local attrs='\x07\x00\x00\x00' + local ret=0 + + local file_list=" + -1234-1234-1234-123456789abc + foo + foo-bar + -foo- + foo-barbazba-foob-foob-foob-foobarbazfoo + foo------------------------------------- + -12345678-1234-1234-1234-123456789abc + a-12345678=1234-1234-1234-123456789abc + a-12345678-1234=1234-1234-123456789abc + a-12345678-1234-1234=1234-123456789abc + a-12345678-1234-1234-1234=123456789abc + 1112345678-1234-1234-1234-123456789abc" + + for f in $file_list; do + local file=$efivarfs_mount/$f + + printf "$attrs\x00" 2>/dev/null > $file + + if [ -e $file ]; then + echo "Creating $file should have failed" >&2 + rm $file + ret=1 + fi + done + + exit $ret +} + check_prereqs rc=0 @@ -135,5 +192,7 @@ run_test test_create_read run_test test_delete run_test test_zero_size_delete run_test test_open_unlink +run_test test_valid_filenames +run_test test_invalid_filenames exit $rc -- cgit v1.1 From feff5dc4f98330d8152b521acc2e18c16712e6c8 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Tue, 5 Mar 2013 12:46:30 +0000 Subject: efivarfs: return accurate error code in efivarfs_fill_super() Joseph was hitting a failure case when mounting efivarfs which resulted in an incorrect error message, $ sudo mount -v /sys/firmware/efi/efivars mount: Cannot allocate memory triggered when efivarfs_valid_name() returned -EINVAL. Make sure we pass accurate return values up the stack if efivarfs_fill_super() fails to build inodes for EFI variables. Reported-by: Joseph Yasi Reported-by: Lingzhu Xiang Cc: Josh Boyer Cc: Jeremy Kerr Cc: Matthew Garrett Cc: # v3.8 Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 1b9a6e1..bea32d1 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -1163,15 +1163,22 @@ static struct dentry_operations efivarfs_d_ops = { static struct dentry *efivarfs_alloc_dentry(struct dentry *parent, char *name) { + struct dentry *d; struct qstr q; + int err; q.name = name; q.len = strlen(name); - if (efivarfs_d_hash(NULL, NULL, &q)) - return NULL; + err = efivarfs_d_hash(NULL, NULL, &q); + if (err) + return ERR_PTR(err); + + d = d_alloc(parent, &q); + if (d) + return d; - return d_alloc(parent, &q); + return ERR_PTR(-ENOMEM); } static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) @@ -1181,6 +1188,7 @@ static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) struct efivar_entry *entry, *n; struct efivars *efivars = &__efivars; char *name; + int err = -ENOMEM; efivarfs_sb = sb; @@ -1231,8 +1239,10 @@ static int efivarfs_fill_super(struct super_block *sb, void *data, int silent) goto fail_name; dentry = efivarfs_alloc_dentry(root, name); - if (!dentry) + if (IS_ERR(dentry)) { + err = PTR_ERR(dentry); goto fail_inode; + } /* copied by the above to local storage in the dentry. */ kfree(name); @@ -1259,7 +1269,7 @@ fail_inode: fail_name: kfree(name); fail: - return -ENOMEM; + return err; } static struct dentry *efivarfs_mount(struct file_system_type *fs_type, -- cgit v1.1 From bdc5c1812cea6efe1aaefb3131fcba28cd0b2b68 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 5 Mar 2013 13:14:19 -0500 Subject: xen/pciback: Don't disable a PCI device that is already disabled. While shuting down a HVM guest with pci devices passed through we get this: pciback 0000:04:00.0: restoring config space at offset 0x4 (was 0x100000, writing 0x100002) ------------[ cut here ]------------ WARNING: at drivers/pci/pci.c:1397 pci_disable_device+0x88/0xa0() Hardware name: MS-7640 Device pciback disabling already-disabled device Modules linked in: Pid: 53, comm: xenwatch Not tainted 3.9.0-rc1-20130304a+ #1 Call Trace: [] warn_slowpath_common+0x7a/0xc0 [] warn_slowpath_fmt+0x41/0x50 [] pci_disable_device+0x88/0xa0 [] xen_pcibk_reset_device+0x37/0xd0 [] ? pcistub_put_pci_dev+0x6f/0x120 [] pcistub_put_pci_dev+0x8d/0x120 [] __xen_pcibk_release_devices+0x59/0xa0 This fixes the bug. CC: stable@vger.kernel.org Reported-and-Tested-by: Sander Eikelenboom Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xen-pciback/pciback_ops.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c index 37c1f82..b98cf0c 100644 --- a/drivers/xen/xen-pciback/pciback_ops.c +++ b/drivers/xen/xen-pciback/pciback_ops.c @@ -113,7 +113,8 @@ void xen_pcibk_reset_device(struct pci_dev *dev) if (dev->msi_enabled) pci_disable_msi(dev); #endif - pci_disable_device(dev); + if (pci_is_enabled(dev)) + pci_disable_device(dev); pci_write_config_word(dev, PCI_COMMAND, 0); -- cgit v1.1 From c705c78c0d0835a4aa5d0d9a3422e3218462030c Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 5 Mar 2013 13:42:54 -0500 Subject: acpi: Export the acpi_processor_get_performance_info The git commit d5aaffa9dd531c978c6f3fea06a2972653bd7fc8 (cpufreq: handle cpufreq being disabled for all exported function) tightens the cpufreq API by returning errors when disable_cpufreq() had been called. The problem we are hitting is that the module xen-acpi-processor which uses the ACPI's functions: acpi_processor_register_performance, acpi_processor_preregister_performance, and acpi_processor_notify_smm fails at acpi_processor_register_performance with -22. Note that earlier during bootup in arch/x86/xen/setup.c there is also an call to cpufreq's API: disable_cpufreq(). This is b/c we want the Linux kernel to parse the ACPI data, but leave the cpufreq decisions to the hypervisor. In v3.9 all the checks that d5aaffa9dd531c978c6f3fea06a2972653bd7fc8 added are now hit and the calls to cpufreq_register_notifier will now fail. This means that acpi_processor_ppc_init ends up printing: "Warning: Processor Platform Limit not supported" and the acpi_processor_ppc_status is not set. The repercussions of that is that the call to acpi_processor_register_performance fails right away at: if (!(acpi_processor_ppc_status & PPC_REGISTERED)) and we don't progress any further on parsing and extracting the _P* objects. The only reason the Xen code called that function was b/c it was exported and the only way to gather the P-states. But we can also just make acpi_processor_get_performance_info be exported and not use acpi_processor_register_performance. This patch does so. Acked-by: Rafael J. Wysocki Signed-off-by: Konrad Rzeszutek Wilk --- drivers/acpi/processor_perflib.c | 4 ++-- drivers/xen/xen-acpi-processor.c | 8 ++++---- include/acpi/processor.h | 3 +++ 3 files changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 53e7ac9..e854582 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -465,7 +465,7 @@ static int acpi_processor_get_performance_states(struct acpi_processor *pr) return result; } -static int acpi_processor_get_performance_info(struct acpi_processor *pr) +int acpi_processor_get_performance_info(struct acpi_processor *pr) { int result = 0; acpi_status status = AE_OK; @@ -509,7 +509,7 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr) #endif return result; } - +EXPORT_SYMBOL_GPL(acpi_processor_get_performance_info); int acpi_processor_notify_smm(struct module *calling_module) { acpi_status status; diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c index 316df65..f3278a6 100644 --- a/drivers/xen/xen-acpi-processor.c +++ b/drivers/xen/xen-acpi-processor.c @@ -500,16 +500,16 @@ static int __init xen_acpi_processor_init(void) (void)acpi_processor_preregister_performance(acpi_perf_data); for_each_possible_cpu(i) { + struct acpi_processor *pr; struct acpi_processor_performance *perf; + pr = per_cpu(processors, i); perf = per_cpu_ptr(acpi_perf_data, i); - rc = acpi_processor_register_performance(perf, i); + pr->performance = perf; + rc = acpi_processor_get_performance_info(pr); if (rc) goto err_out; } - rc = acpi_processor_notify_smm(THIS_MODULE); - if (rc) - goto err_unregister; for_each_possible_cpu(i) { struct acpi_processor *_pr; diff --git a/include/acpi/processor.h b/include/acpi/processor.h index 555d033..b327b5a 100644 --- a/include/acpi/processor.h +++ b/include/acpi/processor.h @@ -235,6 +235,9 @@ extern void acpi_processor_unregister_performance(struct if a _PPC object exists, rmmod is disallowed then */ int acpi_processor_notify_smm(struct module *calling_module); +/* parsing the _P* objects. */ +extern int acpi_processor_get_performance_info(struct acpi_processor *pr); + /* for communication between multiple parts of the processor kernel module */ DECLARE_PER_CPU(struct acpi_processor *, processors); extern struct acpi_processor_errata errata; -- cgit v1.1 From 3c34ae11fac3b30629581d0bfaf80f58e82cfbfb Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Mon, 4 Mar 2013 08:44:01 -0500 Subject: nfsd: fix krb5 handling of anonymous principals krb5 mounts started failing as of 683428fae8c73d7d7da0fa2e0b6beb4d8df4e808 "sunrpc: Update svcgss xdr handle to rpsec_contect cache". The problem is that mounts are usually done with some host principal which isn't normally mapped to any user, in which case svcgssd passes down uid -1, which the kernel is then expected to map to the export-specific anonymous uid or gid. The new uid_valid/gid_valid checks were therefore causing that downcall to fail. (Note the regression may not have been seen with older userspace that tended to map unknown principals to an anonymous id on their own rather than leaving it to the kernel.) Reviewed-by: "Eric W. Biederman" Signed-off-by: J. Bruce Fields --- net/sunrpc/auth_gss/svcauth_gss.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/auth_gss/svcauth_gss.c b/net/sunrpc/auth_gss/svcauth_gss.c index f7d34e7..5ead605 100644 --- a/net/sunrpc/auth_gss/svcauth_gss.c +++ b/net/sunrpc/auth_gss/svcauth_gss.c @@ -447,17 +447,21 @@ static int rsc_parse(struct cache_detail *cd, else { int N, i; + /* + * NOTE: we skip uid_valid()/gid_valid() checks here: + * instead, * -1 id's are later mapped to the + * (export-specific) anonymous id by nfsd_setuser. + * + * (But supplementary gid's get no such special + * treatment so are checked for validity here.) + */ /* uid */ rsci.cred.cr_uid = make_kuid(&init_user_ns, id); - if (!uid_valid(rsci.cred.cr_uid)) - goto out; /* gid */ if (get_int(&mesg, &id)) goto out; rsci.cred.cr_gid = make_kgid(&init_user_ns, id); - if (!gid_valid(rsci.cred.cr_gid)) - goto out; /* number of additional gid's */ if (get_int(&mesg, &N)) -- cgit v1.1 From f40ebd6bcbbd0d30591f42dc16be52b5086a366b Mon Sep 17 00:00:00 2001 From: Patrik Jakobsson Date: Tue, 5 Mar 2013 14:24:48 +0100 Subject: drm/i915: Turn off hsync and vsync on ADPA when disabling crt According to PRM we need to disable hsync and vsync even though ADPA is disabled. The previous code did infact do the opposite so we fix it. Signed-off-by: Patrik Jakobsson Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=56359 Tested-by: max Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_crt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index cfc9687..da1f176 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -88,7 +88,7 @@ static void intel_disable_crt(struct intel_encoder *encoder) u32 temp; temp = I915_READ(crt->adpa_reg); - temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE); + temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE; temp &= ~ADPA_DAC_ENABLE; I915_WRITE(crt->adpa_reg, temp); } -- cgit v1.1 From 35205b211c8d17a8a0b5e8926cb7c73e9a7ef1ad Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 5 Mar 2013 01:03:47 +0000 Subject: sfc: Disable soft interrupt handling during efx_device_detach_sync() efx_device_detach_sync() locks all TX queues before marking the device detached and thus disabling further TX scheduling. But it can still be interrupted by TX completions which then result in TX scheduling in soft interrupt context. This will deadlock when it tries to acquire a TX queue lock that efx_device_detach_sync() already acquired. To avoid deadlock, we must use netif_tx_{,un}lock_bh(). Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/efx.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h index 50247df..d2f790d 100644 --- a/drivers/net/ethernet/sfc/efx.h +++ b/drivers/net/ethernet/sfc/efx.h @@ -171,9 +171,9 @@ static inline void efx_device_detach_sync(struct efx_nic *efx) * TX scheduler is stopped when we're done and before * netif_device_present() becomes false. */ - netif_tx_lock(dev); + netif_tx_lock_bh(dev); netif_device_detach(dev); - netif_tx_unlock(dev); + netif_tx_unlock_bh(dev); } #endif /* EFX_EFX_H */ -- cgit v1.1 From c73e787a8db9117d59b5180baf83203a42ecadca Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Tue, 5 Mar 2013 17:49:39 +0000 Subject: sfc: Correct efx_rx_buffer::page_offset when EFX_PAGE_IP_ALIGN != 0 RX DMA buffers start at an offset of EFX_PAGE_IP_ALIGN bytes from the start of a cache line. This offset obviously needs to be included in the virtual address, but this was missed in commit b590ace09d51 ('sfc: Fix efx_rx_buf_offset() in the presence of swiotlb') since EFX_PAGE_IP_ALIGN is equal to 0 on both x86 and powerpc. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/rx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/rx.c b/drivers/net/ethernet/sfc/rx.c index 879ff58..bb579a6 100644 --- a/drivers/net/ethernet/sfc/rx.c +++ b/drivers/net/ethernet/sfc/rx.c @@ -215,7 +215,7 @@ static int efx_init_rx_buffers_page(struct efx_rx_queue *rx_queue) rx_buf = efx_rx_buffer(rx_queue, index); rx_buf->dma_addr = dma_addr + EFX_PAGE_IP_ALIGN; rx_buf->u.page = page; - rx_buf->page_offset = page_offset; + rx_buf->page_offset = page_offset + EFX_PAGE_IP_ALIGN; rx_buf->len = efx->rx_buffer_len - EFX_PAGE_IP_ALIGN; rx_buf->flags = EFX_RX_BUF_PAGE; ++rx_queue->added_count; -- cgit v1.1 From f422d2a04fe2e661fd439c19197a162cc9a36416 Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Tue, 5 Mar 2013 19:10:26 +0000 Subject: net: docs: document multiqueue tuntap API Signed-off-by: Jason Wang Signed-off-by: David S. Miller --- Documentation/networking/tuntap.txt | 77 +++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) diff --git a/Documentation/networking/tuntap.txt b/Documentation/networking/tuntap.txt index c0aab98..949d5dc 100644 --- a/Documentation/networking/tuntap.txt +++ b/Documentation/networking/tuntap.txt @@ -105,6 +105,83 @@ Copyright (C) 1999-2000 Maxim Krasnyansky Proto [2 bytes] Raw protocol(IP, IPv6, etc) frame. + 3.3 Multiqueue tuntap interface: + + From version 3.8, Linux supports multiqueue tuntap which can uses multiple + file descriptors (queues) to parallelize packets sending or receiving. The + device allocation is the same as before, and if user wants to create multiple + queues, TUNSETIFF with the same device name must be called many times with + IFF_MULTI_QUEUE flag. + + char *dev should be the name of the device, queues is the number of queues to + be created, fds is used to store and return the file descriptors (queues) + created to the caller. Each file descriptor were served as the interface of a + queue which could be accessed by userspace. + + #include + #include + + int tun_alloc_mq(char *dev, int queues, int *fds) + { + struct ifreq ifr; + int fd, err, i; + + if (!dev) + return -1; + + memset(&ifr, 0, sizeof(ifr)); + /* Flags: IFF_TUN - TUN device (no Ethernet headers) + * IFF_TAP - TAP device + * + * IFF_NO_PI - Do not provide packet information + * IFF_MULTI_QUEUE - Create a queue of multiqueue device + */ + ifr.ifr_flags = IFF_TAP | IFF_NO_PI | IFF_MULTI_QUEUE; + strcpy(ifr.ifr_name, dev); + + for (i = 0; i < queues; i++) { + if ((fd = open("/dev/net/tun", O_RDWR)) < 0) + goto err; + err = ioctl(fd, TUNSETIFF, (void *)&ifr); + if (err) { + close(fd); + goto err; + } + fds[i] = fd; + } + + return 0; + err: + for (--i; i >= 0; i--) + close(fds[i]); + return err; + } + + A new ioctl(TUNSETQUEUE) were introduced to enable or disable a queue. When + calling it with IFF_DETACH_QUEUE flag, the queue were disabled. And when + calling it with IFF_ATTACH_QUEUE flag, the queue were enabled. The queue were + enabled by default after it was created through TUNSETIFF. + + fd is the file descriptor (queue) that we want to enable or disable, when + enable is true we enable it, otherwise we disable it + + #include + #include + + int tun_set_queue(int fd, int enable) + { + struct ifreq ifr; + + memset(&ifr, 0, sizeof(ifr)); + + if (enable) + ifr.ifr_flags = IFF_ATTACH_QUEUE; + else + ifr.ifr_flags = IFF_DETACH_QUEUE; + + return ioctl(fd, TUNSETQUEUE, (void *)&ifr); + } + Universal TUN/TAP device driver Frequently Asked Question. 1. What platforms are supported by TUN/TAP driver ? -- cgit v1.1 From c5b3ad4c67989c778e4753be4f91dc7193a04d21 Mon Sep 17 00:00:00 2001 From: Sathya Perla Date: Tue, 5 Mar 2013 22:23:20 +0000 Subject: be2net: use CSR-BAR SEMAPHORE reg for BE2/BE3 The SLIPORT_SEMAPHORE register shadowed in the config-space may not reflect the correct POST stage after an EEH reset in BE2/3; it may return FW_READY state even though FW is not ready. This causes the driver to prematurely poll the FW mailbox and fail. For BE2/3 use the CSR-BAR/0xac instead. Reported-by: Gavin Shan Signed-off-by: Sathya Perla Signed-off-by: David S. Miller --- drivers/net/ethernet/emulex/benet/be.h | 1 + drivers/net/ethernet/emulex/benet/be_cmds.c | 15 +++++++++------ drivers/net/ethernet/emulex/benet/be_hw.h | 4 ++-- drivers/net/ethernet/emulex/benet/be_main.c | 10 ++++++++++ 4 files changed, 22 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 28ceb84..29aff55 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -349,6 +349,7 @@ struct be_adapter { struct pci_dev *pdev; struct net_device *netdev; + u8 __iomem *csr; /* CSR BAR used only for BE2/3 */ u8 __iomem *db; /* Door Bell */ struct mutex mbox_lock; /* For serializing mbox cmds to BE card */ diff --git a/drivers/net/ethernet/emulex/benet/be_cmds.c b/drivers/net/ethernet/emulex/benet/be_cmds.c index 813407f6..3c9b4f1 100644 --- a/drivers/net/ethernet/emulex/benet/be_cmds.c +++ b/drivers/net/ethernet/emulex/benet/be_cmds.c @@ -473,14 +473,17 @@ static int be_mbox_notify_wait(struct be_adapter *adapter) return 0; } -static void be_POST_stage_get(struct be_adapter *adapter, u16 *stage) +static u16 be_POST_stage_get(struct be_adapter *adapter) { u32 sem; - u32 reg = skyhawk_chip(adapter) ? SLIPORT_SEMAPHORE_OFFSET_SH : - SLIPORT_SEMAPHORE_OFFSET_BE; - pci_read_config_dword(adapter->pdev, reg, &sem); - *stage = sem & POST_STAGE_MASK; + if (BEx_chip(adapter)) + sem = ioread32(adapter->csr + SLIPORT_SEMAPHORE_OFFSET_BEx); + else + pci_read_config_dword(adapter->pdev, + SLIPORT_SEMAPHORE_OFFSET_SH, &sem); + + return sem & POST_STAGE_MASK; } int lancer_wait_ready(struct be_adapter *adapter) @@ -574,7 +577,7 @@ int be_fw_wait_ready(struct be_adapter *adapter) } do { - be_POST_stage_get(adapter, &stage); + stage = be_POST_stage_get(adapter); if (stage == POST_STAGE_ARMFW_RDY) return 0; diff --git a/drivers/net/ethernet/emulex/benet/be_hw.h b/drivers/net/ethernet/emulex/benet/be_hw.h index 541d453..62dc220 100644 --- a/drivers/net/ethernet/emulex/benet/be_hw.h +++ b/drivers/net/ethernet/emulex/benet/be_hw.h @@ -32,8 +32,8 @@ #define MPU_EP_CONTROL 0 /********** MPU semphore: used for SH & BE *************/ -#define SLIPORT_SEMAPHORE_OFFSET_BE 0x7c -#define SLIPORT_SEMAPHORE_OFFSET_SH 0x94 +#define SLIPORT_SEMAPHORE_OFFSET_BEx 0xac /* CSR BAR offset */ +#define SLIPORT_SEMAPHORE_OFFSET_SH 0x94 /* PCI-CFG offset */ #define POST_STAGE_MASK 0x0000FFFF #define POST_ERR_MASK 0x1 #define POST_ERR_SHIFT 31 diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 3860888..08e54f3 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -3688,6 +3688,8 @@ static void be_netdev_init(struct net_device *netdev) static void be_unmap_pci_bars(struct be_adapter *adapter) { + if (adapter->csr) + pci_iounmap(adapter->pdev, adapter->csr); if (adapter->db) pci_iounmap(adapter->pdev, adapter->db); } @@ -3721,6 +3723,12 @@ static int be_map_pci_bars(struct be_adapter *adapter) adapter->if_type = (sli_intf & SLI_INTF_IF_TYPE_MASK) >> SLI_INTF_IF_TYPE_SHIFT; + if (BEx_chip(adapter) && be_physfn(adapter)) { + adapter->csr = pci_iomap(adapter->pdev, 2, 0); + if (adapter->csr == NULL) + return -ENOMEM; + } + addr = pci_iomap(adapter->pdev, db_bar(adapter), 0); if (addr == NULL) goto pci_map_err; @@ -4329,6 +4337,8 @@ static pci_ers_result_t be_eeh_reset(struct pci_dev *pdev) pci_restore_state(pdev); /* Check if card is ok and fw is ready */ + dev_info(&adapter->pdev->dev, + "Waiting for FW to be ready after EEH reset\n"); status = be_fw_wait_ready(adapter); if (status) return PCI_ERS_RESULT_DISCONNECT; -- cgit v1.1 From f8af75f3517a24838a36eb5797a1a3e60bf9e276 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 6 Mar 2013 11:02:37 +0000 Subject: tun: add a missing nf_reset() in tun_net_xmit() Dave reported following crash : general protection fault: 0000 [#1] SMP CPU 2 Pid: 25407, comm: qemu-kvm Not tainted 3.7.9-205.fc18.x86_64 #1 Hewlett-Packard HP Z400 Workstation/0B4Ch RIP: 0010:[] [] destroy_conntrack+0x35/0x120 [nf_conntrack] RSP: 0018:ffff880276913d78 EFLAGS: 00010206 RAX: 50626b6b7876376c RBX: ffff88026e530d68 RCX: ffff88028d158e00 RDX: ffff88026d0d5470 RSI: 0000000000000011 RDI: 0000000000000002 RBP: ffff880276913d88 R08: 0000000000000000 R09: ffff880295002900 R10: 0000000000000000 R11: 0000000000000003 R12: ffffffff81ca3b40 R13: ffffffff8151a8e0 R14: ffff880270875000 R15: 0000000000000002 FS: 00007ff3bce38a00(0000) GS:ffff88029fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007fd1430bd000 CR3: 000000027042b000 CR4: 00000000000027e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process qemu-kvm (pid: 25407, threadinfo ffff880276912000, task ffff88028c369720) Stack: ffff880156f59100 ffff880156f59100 ffff880276913d98 ffffffff815534f7 ffff880276913db8 ffffffff8151a74b ffff880270875000 ffff880156f59100 ffff880276913dd8 ffffffff8151a5a6 ffff880276913dd8 ffff88026d0d5470 Call Trace: [] nf_conntrack_destroy+0x17/0x20 [] skb_release_head_state+0x7b/0x100 [] __kfree_skb+0x16/0xa0 [] kfree_skb+0x36/0xa0 [] skb_queue_purge+0x20/0x40 [] __tun_detach+0x117/0x140 [tun] [] tun_chr_close+0x3c/0xd0 [tun] [] __fput+0xec/0x240 [] ____fput+0xe/0x10 [] task_work_run+0xa7/0xe0 [] do_notify_resume+0x71/0xb0 [] int_signal+0x12/0x17 Code: 00 00 04 48 89 e5 41 54 53 48 89 fb 4c 8b a7 e8 00 00 00 0f 85 de 00 00 00 0f b6 73 3e 0f b7 7b 2a e8 10 40 00 00 48 85 c0 74 0e <48> 8b 40 28 48 85 c0 74 05 48 89 df ff d0 48 c7 c7 08 6a 3a a0 RIP [] destroy_conntrack+0x35/0x120 [nf_conntrack] RSP This is because tun_net_xmit() needs to call nf_reset() before queuing skb into receive_queue Reported-by: Dave Jones Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/tun.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 2c6a22e..b7c457a 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -747,6 +747,8 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev) goto drop; skb_orphan(skb); + nf_reset(skb); + /* Enqueue packet */ skb_queue_tail(&tfile->socket.sk->sk_receive_queue, skb); -- cgit v1.1 From 907cc908108b16ae87b7165be992511c968159f0 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Tue, 5 Mar 2013 14:15:27 -0800 Subject: cpufreq / intel_pstate: Fix intel_pstate_init() error path If cpufreq_register_driver() fails just free memory that has been allocated and return. intel_pstate_exit() function is removed since we are built-in only now there is no reason for a module exit procedure. Reported-by: Konrad Rzeszutek Wilk Signed-off-by: Dirk Brandewie Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 39 +++++++++++---------------------------- 1 file changed, 11 insertions(+), 28 deletions(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 096fde0..46a23b6 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -747,37 +747,11 @@ static struct cpufreq_driver intel_pstate_driver = { .owner = THIS_MODULE, }; -static void intel_pstate_exit(void) -{ - int cpu; - - sysfs_remove_group(intel_pstate_kobject, - &intel_pstate_attr_group); - debugfs_remove_recursive(debugfs_parent); - - cpufreq_unregister_driver(&intel_pstate_driver); - - if (!all_cpu_data) - return; - - get_online_cpus(); - for_each_online_cpu(cpu) { - if (all_cpu_data[cpu]) { - del_timer_sync(&all_cpu_data[cpu]->timer); - kfree(all_cpu_data[cpu]); - } - } - - put_online_cpus(); - vfree(all_cpu_data); -} -module_exit(intel_pstate_exit); - static int __initdata no_load; static int __init intel_pstate_init(void) { - int rc = 0; + int cpu, rc = 0; const struct x86_cpu_id *id; if (no_load) @@ -802,7 +776,16 @@ static int __init intel_pstate_init(void) intel_pstate_sysfs_expose_params(); return rc; out: - intel_pstate_exit(); + get_online_cpus(); + for_each_online_cpu(cpu) { + if (all_cpu_data[cpu]) { + del_timer_sync(&all_cpu_data[cpu]->timer); + kfree(all_cpu_data[cpu]); + } + } + + put_online_cpus(); + vfree(all_cpu_data); return -ENODEV; } device_initcall(intel_pstate_init); -- cgit v1.1 From d3929b832833db870af72479666fa4e4d043e02e Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Tue, 5 Mar 2013 14:15:26 -0800 Subject: cpufreq / intel_pstate: Do not load on VM that does not report max P state. It seems some VMs support the P state MSRs but return zeros. Fail gracefully if we are running in this environment. References: https://bugzilla.redhat.com/show_bug.cgi?id=916833 Reported-by: Josh Boyer Signed-off-by: Dirk Brandewie Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 46a23b6..f6dd1e7 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -662,6 +662,9 @@ static int intel_pstate_set_policy(struct cpufreq_policy *policy) cpu = all_cpu_data[policy->cpu]; + if (!policy->cpuinfo.max_freq) + return -ENODEV; + intel_pstate_get_min_max(cpu, &min, &max); limits.min_perf_pct = (policy->min * 100) / policy->cpuinfo.max_freq; -- cgit v1.1 From b8083f86e8e9b23ad4d75d334c92b601947dfa91 Mon Sep 17 00:00:00 2001 From: Jonathan Austin Date: Mon, 4 Mar 2013 15:17:36 +0100 Subject: ARM: 7666/1: decompressor: add -mno-single-pic-base for building the decompressor Before jumping to (position independent) C-code from the decompressor's assembler world we set-up the C environment. This setup currently does not set r9, which for arm-none-uclinux-uclibceabi toolchains is by default expected to be the PIC offset base register (IE should point to the beginning of the GOT). Currently, therefore, in order to build working kernels that use the decompressor it is necessary to use an arm-linux-gnueabi toolchain, or similar. uClinux toolchains cause a prefetch abort to occur at the beginning of the decompress_kernel function. This patch allows uClinux toolchains to build bootable zImages by forcing the -mno-single-pic-base option, which ensures that the location of the GOT is re-derived each time it is required, and r9 becomes free for use as a general purpose register. This has a small (4% in instruction terms) advantage over the alternative of setting r9 to point to the GOT before calling into the C-world. Signed-off-by: Jonathan Austin Acked-by: Nicolas Pitre Signed-off-by: Russell King --- arch/arm/boot/compressed/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 5cad8a6..afed28e 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -120,7 +120,7 @@ ORIG_CFLAGS := $(KBUILD_CFLAGS) KBUILD_CFLAGS = $(subst -pg, , $(ORIG_CFLAGS)) endif -ccflags-y := -fpic -fno-builtin -I$(obj) +ccflags-y := -fpic -mno-single-pic-base -fno-builtin -I$(obj) asflags-y := -Wa,-march=all -DZIMAGE # Supply kernel BSS size to the decompressor via a linker symbol. -- cgit v1.1 From 44d6b1fc3e3c6a3af8e599b724972e881c81e1c9 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Tue, 5 Mar 2013 03:54:06 +0100 Subject: ARM: 7667/1: perf: Fix section mismatch on armpmu_init() WARNING: vmlinux.o(.text+0xfb80): Section mismatch in reference from the function armpmu_register() to the function .init.text:armpmu_init() The function armpmu_register() references the function __init armpmu_init(). This is often because armpmu_register lacks a __init annotation or the annotation of armpmu_init is wrong. Just drop the __init marking on armpmu_init() because armpmu_register() no longer has an __init marking. Acked-by: Will Deacon Signed-off-by: Stephen Boyd Signed-off-by: Russell King --- arch/arm/kernel/perf_event.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c index a892067..146157d 100644 --- a/arch/arm/kernel/perf_event.c +++ b/arch/arm/kernel/perf_event.c @@ -484,7 +484,7 @@ const struct dev_pm_ops armpmu_dev_pm_ops = { SET_RUNTIME_PM_OPS(armpmu_runtime_suspend, armpmu_runtime_resume, NULL) }; -static void __init armpmu_init(struct arm_pmu *armpmu) +static void armpmu_init(struct arm_pmu *armpmu) { atomic_set(&armpmu->active_events, 0); mutex_init(&armpmu->reserve_mutex); -- cgit v1.1 From 72d282dc5109e5dc0d963be020604e0cc82f7ed7 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 5 Mar 2013 19:25:55 +0000 Subject: cifs: Fix bug when checking error condition in cifs_rename_pending_delete() Fix check for error condition after setting attributes with CIFSSMBSetFileInfo(). Signed-off-by: Sachin Prabhu Reviewed-by: Jeff Layton Reviewed-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 83f2606..e7ae45c 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1023,7 +1023,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, current->tgid); /* although we would like to mark the file hidden if that fails we will still try to rename it */ - if (rc != 0) + if (!rc) cifsInode->cifsAttrs = dosattr; else dosattr = origattr; /* since not able to change them */ -- cgit v1.1 From c483a9841df1de327e01af7deb6ba349210e5f82 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 5 Mar 2013 19:25:56 +0000 Subject: cifs: Check server capability before attempting silly rename cifs_rename_pending_delete() attempts to silly rename file using CIFSSMBRenameOpenFile(). This uses the SET_FILE_INFORMATION TRANS2 command with information level set to the passthru info-level SMB_SET_FILE_RENAME_INFORMATION. We need to check to make sure that the server support passthru info-levels before attempting the silly rename or else we will fail to rename the file. Signed-off-by: Sachin Prabhu Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/inode.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index e7ae45c..0079696 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -995,6 +995,15 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, return PTR_ERR(tlink); tcon = tlink_tcon(tlink); + /* + * We cannot rename the file if the server doesn't support + * CAP_INFOLEVEL_PASSTHRU + */ + if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) { + rc = -EBUSY; + goto out; + } + rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN, DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR, &netfid, &oplock, NULL, cifs_sb->local_nls, -- cgit v1.1 From 25189643a165a5ccad48ee3c116b55905299fd3d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Thu, 21 Feb 2013 06:32:59 -0500 Subject: cifs: remove the sockopt= mount option ...as promised for 3.9. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 16 +--------------- 1 file changed, 1 insertion(+), 15 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 54125e0..991c63c 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -97,7 +97,7 @@ enum { Opt_user, Opt_pass, Opt_ip, Opt_unc, Opt_domain, Opt_srcaddr, Opt_prefixpath, - Opt_iocharset, Opt_sockopt, + Opt_iocharset, Opt_netbiosname, Opt_servern, Opt_ver, Opt_vers, Opt_sec, Opt_cache, @@ -202,7 +202,6 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_srcaddr, "srcaddr=%s" }, { Opt_prefixpath, "prefixpath=%s" }, { Opt_iocharset, "iocharset=%s" }, - { Opt_sockopt, "sockopt=%s" }, { Opt_netbiosname, "netbiosname=%s" }, { Opt_servern, "servern=%s" }, { Opt_ver, "ver=%s" }, @@ -1752,19 +1751,6 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, */ cFYI(1, "iocharset set to %s", string); break; - case Opt_sockopt: - string = match_strdup(args); - if (string == NULL) - goto out_nomem; - - if (strnicmp(string, "TCP_NODELAY", 11) == 0) { - printk(KERN_WARNING "CIFS: the " - "sockopt=TCP_NODELAY option has been " - "deprecated and will be removed " - "in 3.9\n"); - vol->sockopt_tcp_nodelay = 1; - } - break; case Opt_netbiosname: string = match_strdup(args); if (string == NULL) -- cgit v1.1 From 94e18007688a13e5da1a2f1b7f52f15cc56c9f5e Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 4 Mar 2013 15:18:25 -0500 Subject: cifs: don't try to unlock pagecache page after releasing it We had a recent fix to fix the release of pagecache pages when cifs_writev_requeue writes fail. Unfortunately, it releases the page before trying to unlock it. At that point, the page might be gone by the time the unlock comes in. Unlock the page first before checking the value of "rc", and only then end writeback and release the pages. The page lock isn't required for any of those operations so this should be safe. Reported-by: Anton Altaparmakov Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifssmb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 7353bc5..8e2e799 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1909,12 +1909,12 @@ cifs_writev_requeue(struct cifs_writedata *wdata) } while (rc == -EAGAIN); for (i = 0; i < wdata->nr_pages; i++) { + unlock_page(wdata->pages[i]); if (rc != 0) { SetPageError(wdata->pages[i]); end_page_writeback(wdata->pages[i]); page_cache_release(wdata->pages[i]); } - unlock_page(wdata->pages[i]); } mapping_set_error(inode->i_mapping, rc); -- cgit v1.1 From 0a96d4d36978c8aeebf5fce1f3041c2d60f23ac0 Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Thu, 7 Mar 2013 10:33:07 +0900 Subject: ARM: EXYNOS: Add #dma-cells for generic dma binding support for PL330 This patch adds #dma-cells property to PL330 DMA controller nodes for supporting generic dma dt bindings on samsung exynos platforms. #dma-channels and #dma-requests are not required now but added in advance. Signed-off-by: Padmavathi Venna Acked-by: Arnd Bergmann Signed-off-by: Kukjin Kim --- arch/arm/boot/dts/exynos4.dtsi | 9 +++++++++ arch/arm/boot/dts/exynos5440.dtsi | 6 ++++++ 2 files changed, 15 insertions(+) diff --git a/arch/arm/boot/dts/exynos4.dtsi b/arch/arm/boot/dts/exynos4.dtsi index e1347fc..1a62bcf 100644 --- a/arch/arm/boot/dts/exynos4.dtsi +++ b/arch/arm/boot/dts/exynos4.dtsi @@ -275,18 +275,27 @@ compatible = "arm,pl330", "arm,primecell"; reg = <0x12680000 0x1000>; interrupts = <0 35 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; pdma1: pdma@12690000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x12690000 0x1000>; interrupts = <0 36 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; mdma1: mdma@12850000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x12850000 0x1000>; interrupts = <0 34 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <1>; }; }; }; diff --git a/arch/arm/boot/dts/exynos5440.dtsi b/arch/arm/boot/dts/exynos5440.dtsi index 5f3562a..9a99755 100644 --- a/arch/arm/boot/dts/exynos5440.dtsi +++ b/arch/arm/boot/dts/exynos5440.dtsi @@ -142,12 +142,18 @@ compatible = "arm,pl330", "arm,primecell"; reg = <0x120000 0x1000>; interrupts = <0 34 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; pdma1: pdma@121B0000 { compatible = "arm,pl330", "arm,primecell"; reg = <0x121000 0x1000>; interrupts = <0 35 0>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; }; -- cgit v1.1 From 067785c40e52089993757afa28988c05f3cb2694 Mon Sep 17 00:00:00 2001 From: Pavel Shilovsky Date: Wed, 6 Mar 2013 19:38:36 +0400 Subject: CIFS: Fix missing of oplock_read value in smb30_values structure Cc: stable@vger.kernel.org Signed-off-by: Pavel Shilovsky Signed-off-by: Steve French --- fs/cifs/smb2ops.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index c9c7aa7..bceffe7 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -744,4 +744,5 @@ struct smb_version_values smb30_values = { .cap_unix = 0, .cap_nt_find = SMB2_NT_FIND, .cap_large_files = SMB2_LARGE_FILES, + .oplock_read = SMB2_OPLOCK_LEVEL_II, }; -- cgit v1.1 From 4a38a8502b0ea4ecbe86f60e0b2416771c51888d Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Tue, 5 Mar 2013 16:13:35 +0100 Subject: ARM: mxs: cfa10049: Fix fb initialisation function Commit 1fe42740 ("ARM: dts: mxs: Add the LCD to the 10049 board") seem to have been applied with some fuzzyness, and the framebuffer initialisation code for the CFA-10049 ended up in the CFA-10037 initialisation function. Signed-off-by: Maxime Ripard Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/mach-mxs.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index 0521867..3218f1f 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -402,17 +402,17 @@ static void __init cfa10049_init(void) { enable_clk_enet_out(); update_fec_mac_prop(OUI_CRYSTALFONTZ); + + mxsfb_pdata.mode_list = cfa10049_video_modes; + mxsfb_pdata.mode_count = ARRAY_SIZE(cfa10049_video_modes); + mxsfb_pdata.default_bpp = 32; + mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT; } static void __init cfa10037_init(void) { enable_clk_enet_out(); update_fec_mac_prop(OUI_CRYSTALFONTZ); - - mxsfb_pdata.mode_list = cfa10049_video_modes; - mxsfb_pdata.mode_count = ARRAY_SIZE(cfa10049_video_modes); - mxsfb_pdata.default_bpp = 32; - mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT; } static void __init apf28_init(void) -- cgit v1.1 From 3a01aa7a25274308fe813a6237f678aed901cea3 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Wed, 6 Mar 2013 01:57:55 -0700 Subject: Btrfs: fix a mismerge in btrfs_balance() Raid56 merge (merge commit e942f88) had mistakenly removed a call to __cancel_balance(), which resulted in balance not cleaning up after itself after a successful finish. (Cleanup includes switching the state, removing the balance item and releasing mut_ex_op testnset lock.) Bring it back. Reported-by: David Sterba Signed-off-by: Ilya Dryomov Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 9ff454d..6b9cff4 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3235,6 +3235,11 @@ int btrfs_balance(struct btrfs_balance_control *bctl, update_ioctl_balance_args(fs_info, 0, bargs); } + if ((ret && ret != -ECANCELED && ret != -ENOSPC) || + balance_need_close(fs_info)) { + __cancel_balance(fs_info); + } + wake_up(&fs_info->balance_wait_q); return ret; -- cgit v1.1 From ad4e1a7caf937ad395ced585ca85a7d14395dc80 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Sun, 17 Feb 2013 19:42:48 +0800 Subject: gpio: fix wrong checking condition for gpio range If index++ calculates from 0, the checking condition of "while (index++)" fails & it doesn't check any more. It doesn't follow the loop that used at here. Replace it by endless loop at here. Then it keeps parsing "gpio-ranges" property until it ends. Signed-off-by: Haojian Zhuang Reviewed-by: Linus Walleij Signed-off-by: Linus Walleij --- drivers/gpio/gpiolib-of.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index a71a54a..5150df6 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -193,7 +193,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip) if (!np) return; - do { + for (;; index++) { ret = of_parse_phandle_with_args(np, "gpio-ranges", "#gpio-range-cells", index, &pinspec); if (ret) @@ -222,8 +222,7 @@ static void of_gpiochip_add_pin_range(struct gpio_chip *chip) if (ret) break; - - } while (index++); + } } #else -- cgit v1.1 From 015221fefbc93689dd47508a66326556adf2abcd Mon Sep 17 00:00:00 2001 From: Krzysztof Mazur Date: Sun, 3 Mar 2013 00:14:42 +0100 Subject: x86: Fix 32-bit *_cpu_data initializers The commit 27be457000211a6903968dfce06d5f73f051a217 ('x86 idle: remove 32-bit-only "no-hlt" parameter, hlt_works_ok flag') removed the hlt_works_ok flag from struct cpuinfo_x86, but boot_cpu_data and new_cpu_data initializers were not changed causing setting f00f_bug flag, instead of fdiv_bug. If CONFIG_X86_F00F_BUG is not set the f00f_bug flag is never cleared. To avoid such problems in future C99-style initialization is now used. Signed-off-by: Krzysztof Mazur Acked-by: Borislav Petkov Cc: len.brown@intel.com Link: http://lkml.kernel.org/r/1362266082-2227-1-git-send-email-krzysiek@podlesie.net Signed-off-by: Ingo Molnar Signed-off-by: H. Peter Anvin --- arch/x86/kernel/setup.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 84d3285..90d8cc9 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -171,9 +171,15 @@ static struct resource bss_resource = { #ifdef CONFIG_X86_32 /* cpu data as detected by the assembly code in head.S */ -struct cpuinfo_x86 new_cpu_data __cpuinitdata = {0, 0, 0, 0, -1, 1, 0, 0, -1}; +struct cpuinfo_x86 new_cpu_data __cpuinitdata = { + .wp_works_ok = -1, + .fdiv_bug = -1, +}; /* common cpu data for all cpus */ -struct cpuinfo_x86 boot_cpu_data __read_mostly = {0, 0, 0, 0, -1, 1, 0, 0, -1}; +struct cpuinfo_x86 boot_cpu_data __read_mostly = { + .wp_works_ok = -1, + .fdiv_bug = -1, +}; EXPORT_SYMBOL(boot_cpu_data); unsigned int def_to_bigsmp; -- cgit v1.1 From 98e7a989979b185f49e86ddaed2ad6890299d9f0 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Wed, 6 Mar 2013 20:18:21 -0800 Subject: x86, mm: Make sure to find a 2M free block for the first mapped area Henrik reported that his MacAir 3.1 would not boot with | commit 8d57470d8f859635deffe3919d7d4867b488b85a | Date: Fri Nov 16 19:38:58 2012 -0800 | | x86, mm: setup page table in top-down It turns out that we do not calculate the real_end properly: We try to get 2M size with 4K alignment, and later will round down to 2M, so we will get less then 2M for first mapping, in extreme case could be only 4K only. In Henrik's system it has (1M-32K) as last usable rage is [mem 0x7f9db000-0x7fef8fff]. The problem is exposed when EFI booting have several holes and it will force mapping to use PTE instead as we only map usable areas. To fix it, just make it be 2M aligned, so we can be guaranteed to be able to use large pages to map it. Reported-by: Henrik Rydberg Bisected-by: Henrik Rydberg Tested-by: Henrik Rydberg Signed-off-by: Yinghai Lu Link: http://lkml.kernel.org/r/CAE9FiQX4nQ7_1kg5RL_vh56rmcSHXUi1ExrZX7CwED4NGMnHfg@mail.gmail.com Signed-off-by: H. Peter Anvin --- arch/x86/mm/init.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 4903a03..59b7fc4 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -410,9 +410,8 @@ void __init init_mem_mapping(void) /* the ISA range is always mapped regardless of memory holes */ init_memory_mapping(0, ISA_END_ADDRESS); - /* xen has big range in reserved near end of ram, skip it at first */ - addr = memblock_find_in_range(ISA_END_ADDRESS, end, PMD_SIZE, - PAGE_SIZE); + /* xen has big range in reserved near end of ram, skip it at first.*/ + addr = memblock_find_in_range(ISA_END_ADDRESS, end, PMD_SIZE, PMD_SIZE); real_end = addr + PMD_SIZE; /* step_size need to be small so pgt_buf from BRK could cover it */ -- cgit v1.1 From daec90e7382cbd0e73eb6861109b3da91e5ab1f3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Wed, 27 Feb 2013 15:52:56 +0100 Subject: USB: option: add Huawei E5331 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Another device using CDC ACM with vendor specific protocol to mark serial functions. Cc: stable Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index f7d339d..b6266bd 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -579,6 +579,7 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(QUANTA_VENDOR_ID, 0xea42), .driver_info = (kernel_ulong_t)&net_intf4_blacklist }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c05, USB_CLASS_COMM, 0x02, 0xff) }, + { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c1f, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, 0x1c23, USB_CLASS_COMM, 0x02, 0xff) }, { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 0xff, 0xff, 0xff), .driver_info = (kernel_ulong_t) &net_intf1_blacklist }, -- cgit v1.1 From a0f11aceee531d444f58b939e6a537ee5e2b9cc5 Mon Sep 17 00:00:00 2001 From: "Maxin B. John" Date: Thu, 21 Feb 2013 01:57:51 +0200 Subject: tools: usb: ffs-test: Fix build failure Fixes this build failure: gcc -Wall -Wextra -g -lpthread -I../include -o testusb testusb.c gcc -Wall -Wextra -g -lpthread -I../include -o ffs-test ffs-test.c In file included from ffs-test.c:41:0: ../../include/linux/usb/functionfs.h:4:39: fatal error: uapi/linux/usb/functionfs.h: No such file or directory compilation terminated. make: *** [ffs-test] Error 1 Signed-off-by: Maxin B. John Acked-by: Michal Nazarewicz Cc: stable # 3.7+ Signed-off-by: Greg Kroah-Hartman --- tools/usb/ffs-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/usb/ffs-test.c b/tools/usb/ffs-test.c index 8674b9e..fe1e66b 100644 --- a/tools/usb/ffs-test.c +++ b/tools/usb/ffs-test.c @@ -38,7 +38,7 @@ #include #include -#include "../../include/linux/usb/functionfs.h" +#include "../../include/uapi/linux/usb/functionfs.h" /******************** Little Endian Handling ********************************/ -- cgit v1.1 From fbb8c745ec20fd9e6ba9af56dabab987c765263c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Tue, 5 Mar 2013 09:58:42 +0100 Subject: USB: storage: in-kernel modeswitching is deprecated MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Acked-by: Matthew Dharm Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 72923b5..731c1d7 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -53,6 +53,14 @@ * as opposed to devices that do something strangely or wrongly. */ +/* In-kernel mode switching is deprecated. Do not add new devices to + * this list for the sole purpose of switching them to a different + * mode. Existing userspace solutions are superior. + * + * New mode switching devices should instead be added to the database + * maintained at http://www.draisberghof.de/usb_modeswitch/ + */ + #if !defined(CONFIG_USB_STORAGE_SDDR09) && \ !defined(CONFIG_USB_STORAGE_SDDR09_MODULE) #define NO_SDDR09 -- cgit v1.1 From ab4b71644a26d1ab92b987b2fd30e17c25e89f85 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Mon, 4 Mar 2013 14:19:21 +0100 Subject: USB: storage: fix Huawei mode switching regression MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 200e0d99 ("USB: storage: optimize to match the Huawei USB storage devices and support new switch command" and the followup bugfix commit cd060956 ("USB: storage: properly handle the endian issues of idProduct"). The commit effectively added a large number of Huawei devices to the deprecated usb-storage mode switching logic. Many of these devices have been in use and supported by the userspace usb_modeswitch utility for years. Forcing the switching inside the kernel causes a number of regressions as a result of ignoring existing onfigurations, and also completely takes away the ability to configure mode switching per device/system/user. Known regressions caused by this: - Some of the devices support multiple modes, using different switching commands. There are existing configurations taking advantage of this. - There is a real use case for disabling mode switching and instead mounting the exposed storage device. This becomes impossible with switching logic inside the usb-storage driver. - At least on device fail as a result of the usb-storage switching command, becoming completely unswitchable. This is possibly a firmware bug, but still a regression because the device work as expected using usb_modeswitch defaults. In-kernel mode switching was deprecated years ago with the development of the more user friendly userspace alternatives. The existing list of devices in usb-storage was only kept to prevent breaking already working systems. The long term plan is to remove the list, not to add to it. Ref: http://permalink.gmane.org/gmane.linux.usb.general/28543 Cc: Cc: stable Signed-off-by: Bjørn Mork Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/initializers.c | 76 +-------- drivers/usb/storage/initializers.h | 4 +- drivers/usb/storage/unusual_devs.h | 329 ++++++++++++++++++++++++++++++++++++- 3 files changed, 331 insertions(+), 78 deletions(-) diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c index 7ab9046..105d900 100644 --- a/drivers/usb/storage/initializers.c +++ b/drivers/usb/storage/initializers.c @@ -92,8 +92,8 @@ int usb_stor_ucr61s2b_init(struct us_data *us) return 0; } -/* This places the HUAWEI usb dongles in multi-port mode */ -static int usb_stor_huawei_feature_init(struct us_data *us) +/* This places the HUAWEI E220 devices in multi-port mode */ +int usb_stor_huawei_e220_init(struct us_data *us) { int result; @@ -104,75 +104,3 @@ static int usb_stor_huawei_feature_init(struct us_data *us) US_DEBUGP("Huawei mode set result is %d\n", result); return 0; } - -/* - * It will send a scsi switch command called rewind' to huawei dongle. - * When the dongle receives this command at the first time, - * it will reboot immediately. After rebooted, it will ignore this command. - * So it is unnecessary to read its response. - */ -static int usb_stor_huawei_scsi_init(struct us_data *us) -{ - int result = 0; - int act_len = 0; - struct bulk_cb_wrap *bcbw = (struct bulk_cb_wrap *) us->iobuf; - char rewind_cmd[] = {0x11, 0x06, 0x20, 0x00, 0x00, 0x01, 0x01, 0x00, - 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; - - bcbw->Signature = cpu_to_le32(US_BULK_CB_SIGN); - bcbw->Tag = 0; - bcbw->DataTransferLength = 0; - bcbw->Flags = bcbw->Lun = 0; - bcbw->Length = sizeof(rewind_cmd); - memset(bcbw->CDB, 0, sizeof(bcbw->CDB)); - memcpy(bcbw->CDB, rewind_cmd, sizeof(rewind_cmd)); - - result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, bcbw, - US_BULK_CB_WRAP_LEN, &act_len); - US_DEBUGP("transfer actual length=%d, result=%d\n", act_len, result); - return result; -} - -/* - * It tries to find the supported Huawei USB dongles. - * In Huawei, they assign the following product IDs - * for all of their mobile broadband dongles, - * including the new dongles in the future. - * So if the product ID is not included in this list, - * it means it is not Huawei's mobile broadband dongles. - */ -static int usb_stor_huawei_dongles_pid(struct us_data *us) -{ - struct usb_interface_descriptor *idesc; - int idProduct; - - idesc = &us->pusb_intf->cur_altsetting->desc; - idProduct = le16_to_cpu(us->pusb_dev->descriptor.idProduct); - /* The first port is CDROM, - * means the dongle in the single port mode, - * and a switch command is required to be sent. */ - if (idesc && idesc->bInterfaceNumber == 0) { - if ((idProduct == 0x1001) - || (idProduct == 0x1003) - || (idProduct == 0x1004) - || (idProduct >= 0x1401 && idProduct <= 0x1500) - || (idProduct >= 0x1505 && idProduct <= 0x1600) - || (idProduct >= 0x1c02 && idProduct <= 0x2202)) { - return 1; - } - } - return 0; -} - -int usb_stor_huawei_init(struct us_data *us) -{ - int result = 0; - - if (usb_stor_huawei_dongles_pid(us)) { - if (le16_to_cpu(us->pusb_dev->descriptor.idProduct) >= 0x1446) - result = usb_stor_huawei_scsi_init(us); - else - result = usb_stor_huawei_feature_init(us); - } - return result; -} diff --git a/drivers/usb/storage/initializers.h b/drivers/usb/storage/initializers.h index 5376d4f..529327f 100644 --- a/drivers/usb/storage/initializers.h +++ b/drivers/usb/storage/initializers.h @@ -46,5 +46,5 @@ int usb_stor_euscsi_init(struct us_data *us); * flash reader */ int usb_stor_ucr61s2b_init(struct us_data *us); -/* This places the HUAWEI usb dongles in multi-port mode */ -int usb_stor_huawei_init(struct us_data *us); +/* This places the HUAWEI E220 devices in multi-port mode */ +int usb_stor_huawei_e220_init(struct us_data *us); diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 731c1d7..da04a07 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -1535,10 +1535,335 @@ UNUSUAL_DEV( 0x1210, 0x0003, 0x0100, 0x0100, /* Reported by fangxiaozhi * This brings the HUAWEI data card devices into multi-port mode */ -UNUSUAL_VENDOR_INTF(0x12d1, 0x08, 0x06, 0x50, +UNUSUAL_DEV( 0x12d1, 0x1001, 0x0000, 0x0000, "HUAWEI MOBILE", "Mass Storage", - USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_init, + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1003, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1004, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1401, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1402, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1403, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1404, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1405, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1406, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1407, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1408, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1409, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140A, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140B, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140C, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140D, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140E, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x140F, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1410, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1411, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1412, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1413, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1414, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1415, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1416, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1417, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1418, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1419, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141A, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141B, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141C, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141D, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141E, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x141F, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1420, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1421, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1422, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1423, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1424, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1425, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1426, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1427, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1428, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1429, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142A, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142B, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142C, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142D, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142E, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x142F, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1430, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1431, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1432, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1433, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1434, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1435, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1436, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1437, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1438, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x1439, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143A, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143B, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143C, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143D, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143E, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, + 0), +UNUSUAL_DEV( 0x12d1, 0x143F, 0x0000, 0x0000, + "HUAWEI MOBILE", + "Mass Storage", + USB_SC_DEVICE, USB_PR_DEVICE, usb_stor_huawei_e220_init, 0), /* Reported by Vilius Bilinkevicius Date: Wed, 6 Mar 2013 20:23:30 -0800 Subject: x86: Don't clear efi_info even if the sentinel hits When boot_params->sentinel is set, all we really know is that some undefined set of fields in struct boot_params contain garbage. In the particular case of efi_info, however, there is a private magic for that substructure, so it is generally safe to leave it even if the bootloader is broken. kexec (for which we did the initial analysis) did not initialize this field, but of course all the EFI bootloaders do, and most EFI bootloaders are broken in this respect (and should be fixed.) Reported-by: Robin Holt Link: http://lkml.kernel.org/r/CA%2B5PVA51-FT14p4CRYKbicykugVb=PiaEycdQ57CK2km_OQuRQ@mail.gmail.com Tested-by: Josh Boyer Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/bootparam_utils.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h index 5b5e9cb..ff808ef 100644 --- a/arch/x86/include/asm/bootparam_utils.h +++ b/arch/x86/include/asm/bootparam_utils.h @@ -14,13 +14,15 @@ * analysis of kexec-tools; if other broken bootloaders initialize a * different set of fields we will need to figure out how to disambiguate. * + * Note: efi_info is commonly left uninitialized, but that field has a + * private magic, so it is better to leave it unchanged. */ static void sanitize_boot_params(struct boot_params *boot_params) { if (boot_params->sentinel) { /*fields in boot_params are not valid, clear them */ memset(&boot_params->olpc_ofw_header, 0, - (char *)&boot_params->alt_mem_k - + (char *)&boot_params->efi_info - (char *)&boot_params->olpc_ofw_header); memset(&boot_params->kbd_status, 0, (char *)&boot_params->hdr - -- cgit v1.1 From 518868c8fe70c98d4167ad62dac3ad3cf85c2def Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 5 Mar 2013 23:16:44 +0100 Subject: usb: gadget: fix omap_udc build errors 1bf0cf6040 "usb: gadget: omap_udc: convert to udc_start/udc_stop" made some trivial changes but was missing a ';' character. 8c4cc00552 "ARM: OMAP1: DMA: Moving OMAP1 DMA channel definitions to mach-omap1" added a definition for OMAP_DMA_USB_W2FC_TX0 to the driver while making the header file it was defined in unavailable for drivers, but this driver actually needs OMAP_DMA_USB_W2FC_RX0 as well. Both changes appear trivial, so let's add the missing semicolon and the macro definition. Acked-by: Felipe Balbi Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/omap_udc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index 06be85c..f8445653 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -62,6 +62,7 @@ #define DRIVER_VERSION "4 October 2004" #define OMAP_DMA_USB_W2FC_TX0 29 +#define OMAP_DMA_USB_W2FC_RX0 26 /* * The OMAP UDC needs _very_ early endpoint setup: before enabling the @@ -1310,7 +1311,7 @@ static int omap_pullup(struct usb_gadget *gadget, int is_on) } static int omap_udc_start(struct usb_gadget *g, - struct usb_gadget_driver *driver) + struct usb_gadget_driver *driver); static int omap_udc_stop(struct usb_gadget *g, struct usb_gadget_driver *driver); -- cgit v1.1 From 1941138e1c024ecb5bd797d414928d3eb94d8662 Mon Sep 17 00:00:00 2001 From: Christian Schmiedl Date: Wed, 6 Mar 2013 17:08:50 +0100 Subject: USB: added support for Cinterion's products AH6 and PLS8 add support for Cinterion's products AH6 and PLS8 by adding Product IDs and USB_DEVICE tuples. Signed-off-by: Christian Schmiedl Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/option.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c index b6266bd..558adfc 100644 --- a/drivers/usb/serial/option.c +++ b/drivers/usb/serial/option.c @@ -341,6 +341,8 @@ static void option_instat_callback(struct urb *urb); #define CINTERION_PRODUCT_EU3_E 0x0051 #define CINTERION_PRODUCT_EU3_P 0x0052 #define CINTERION_PRODUCT_PH8 0x0053 +#define CINTERION_PRODUCT_AH6 0x0055 +#define CINTERION_PRODUCT_PLS8 0x0060 /* Olivetti products */ #define OLIVETTI_VENDOR_ID 0x0b3c @@ -1261,6 +1263,8 @@ static const struct usb_device_id option_ids[] = { { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_E) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_EU3_P) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PH8) }, + { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_AH6) }, + { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_PLS8) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDM) }, { USB_DEVICE(CINTERION_VENDOR_ID, CINTERION_PRODUCT_HC28_MDMNET) }, { USB_DEVICE(SIEMENS_VENDOR_ID, CINTERION_PRODUCT_HC25_MDM) }, -- cgit v1.1 From 1c2088812f095df77f4b3224b65db79d7111a300 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 6 Mar 2013 16:00:45 +0200 Subject: usb: Makefile: fix drivers/usb/phy/ Makefile entry drivers/usb/phy/ should be compiled everytime we have CONFIG_USB_OTG_UTILS enabled. phy/ should've been part of the build process based on CONFIG_USB_OTG_UTILS, don't know where I had my head when I allowed CONFIG_USB_COMMON there. In fact commit c6156328dec52a55f90688cbfad21c83f8711d84 tried to fix a previous issue but it made things even worse. The real solution is to compile phy/ based on CONFIG_USB_OTG_UTILS which gets selected by all PHY drivers. I only triggered the error recently after accepting a patch which moved a bunch of code from otg/otg.c to phy/phy.c and running 100 randconfig cycles. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index f5ed3d7..8f5ebce 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -46,7 +46,7 @@ obj-$(CONFIG_USB_MICROTEK) += image/ obj-$(CONFIG_USB_SERIAL) += serial/ obj-$(CONFIG_USB) += misc/ -obj-$(CONFIG_USB_COMMON) += phy/ +obj-$(CONFIG_USB_OTG_UTILS) += phy/ obj-$(CONFIG_EARLY_PRINTK_DBGP) += early/ obj-$(CONFIG_USB_ATM) += atm/ -- cgit v1.1 From 5df3c35183d7963fb259eda2dbd096825861d740 Mon Sep 17 00:00:00 2001 From: Dave Tubbs Date: Wed, 27 Feb 2013 16:32:53 -0700 Subject: usb: Correction to c67x00 TD data length mask TD data length is 10 bits, correct TD_PORTLENMASK_DL. Reference Cypress Semiconductor BIOS User's Manual 1.2, page 3-10 Signed-off-by: Dave Tubbs Acked-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/c67x00/c67x00-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c index a03fbc1..aa2262f 100644 --- a/drivers/usb/c67x00/c67x00-sched.c +++ b/drivers/usb/c67x00/c67x00-sched.c @@ -100,7 +100,7 @@ struct c67x00_urb_priv { #define TD_PIDEP_OFFSET 0x04 #define TD_PIDEPMASK_PID 0xF0 #define TD_PIDEPMASK_EP 0x0F -#define TD_PORTLENMASK_DL 0x02FF +#define TD_PORTLENMASK_DL 0x03FF #define TD_PORTLENMASK_PN 0xC000 #define TD_STATUS_OFFSET 0x07 -- cgit v1.1 From b44983bb9bfa8c21fe6e85b3a32b7b458294c142 Mon Sep 17 00:00:00 2001 From: Dave Tubbs Date: Wed, 27 Feb 2013 16:32:55 -0700 Subject: usb: c67x00 RetryCnt value in c67x00 TD should be 3 RetryCnt value in c67x00 TD should be 3 (both bits set to 1). Reference Cypress Semiconductor BIOS User's Manual 1.2, page 3-14 Signed-off-by: Dave Tubbs Acked-by: Peter Korsgaard Signed-off-by: Greg Kroah-Hartman --- drivers/usb/c67x00/c67x00-sched.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/c67x00/c67x00-sched.c b/drivers/usb/c67x00/c67x00-sched.c index aa2262f..aa49162 100644 --- a/drivers/usb/c67x00/c67x00-sched.c +++ b/drivers/usb/c67x00/c67x00-sched.c @@ -590,7 +590,7 @@ static int c67x00_create_td(struct c67x00_hcd *c67x00, struct urb *urb, { struct c67x00_td *td; struct c67x00_urb_priv *urbp = urb->hcpriv; - const __u8 active_flag = 1, retry_cnt = 1; + const __u8 active_flag = 1, retry_cnt = 3; __u8 cmd = 0; int tt = 0; -- cgit v1.1 From 3c4aff6b9a183b4f24eb7b8dd6c8a92cdba3bc75 Mon Sep 17 00:00:00 2001 From: Peter Jones Date: Wed, 6 Mar 2013 13:00:23 -0500 Subject: x86, doc: Be explicit about what the x86 struct boot_params requires If the sentinel triggers, we do not want the boot loader authors to just poke it and make the error go away, we want them to actually fix the problem. This should help avoid making the incorrect change in non-compliant bootloaders. [ hpa: dropped the Documentation/x86/boot.txt hunk pending clarifications ] Signed-off-by: Peter Jones Link: http://lkml.kernel.org/r/1362592823-28967-1-git-send-email-pjones@redhat.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/bootparam_utils.h | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h index ff808ef..653668d 100644 --- a/arch/x86/include/asm/bootparam_utils.h +++ b/arch/x86/include/asm/bootparam_utils.h @@ -19,8 +19,22 @@ */ static void sanitize_boot_params(struct boot_params *boot_params) { + /* + * IMPORTANT NOTE TO BOOTLOADER AUTHORS: do not simply clear + * this field. The purpose of this field is to guarantee + * compliance with the x86 boot spec located in + * Documentation/x86/boot.txt . That spec says that the + * *whole* structure should be cleared, after which only the + * portion defined by struct setup_header (boot_params->hdr) + * should be copied in. + * + * If you're having an issue because the sentinel is set, you + * need to change the whole structure to be cleared, not this + * (or any other) individual field, or you will soon have + * problems again. + */ if (boot_params->sentinel) { - /*fields in boot_params are not valid, clear them */ + /* fields in boot_params are left uninitialized, clear them */ memset(&boot_params->olpc_ofw_header, 0, (char *)&boot_params->efi_info - (char *)&boot_params->olpc_ofw_header); -- cgit v1.1 From 25336e8ae2d2fa64c9c4cc2c9c28f641134c9fa9 Mon Sep 17 00:00:00 2001 From: Mengdong Lin Date: Thu, 7 Mar 2013 14:10:25 -0500 Subject: ALSA: hda - check NULL pointer when creating SPDIF controls If the SPDIF control array cannot be reallocated, the function will return to avoid dereferencing a NULL pointer. Signed-off-by: Mengdong Lin Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 04b5738..3dc6566 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3334,6 +3334,8 @@ int snd_hda_create_dig_out_ctls(struct hda_codec *codec, return -EBUSY; } spdif = snd_array_new(&codec->spdif_out); + if (!spdif) + return -ENOMEM; for (dig_mix = dig_mixes; dig_mix->name; dig_mix++) { kctl = snd_ctl_new1(dig_mix, codec); if (!kctl) -- cgit v1.1 From 4c7a548a70a44269266858f65c3b5fc9c3ace057 Mon Sep 17 00:00:00 2001 From: Mengdong Lin Date: Thu, 7 Mar 2013 14:11:05 -0500 Subject: ALSA: hda - check NULL pointer when creating SPDIF PCM switch If the new control cannot be created, this function will return to avoid snd_hda_ctl_add dereferencing a NULL control pointer. Signed-off-by: Mengdong Lin Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 3dc6566..97c68dd 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3433,11 +3433,16 @@ static struct snd_kcontrol_new spdif_share_sw = { int snd_hda_create_spdif_share_sw(struct hda_codec *codec, struct hda_multi_out *mout) { + struct snd_kcontrol *kctl; + if (!mout->dig_out_nid) return 0; + + kctl = snd_ctl_new1(&spdif_share_sw, mout); + if (!kctl) + return -ENOMEM; /* ATTENTION: here mout is passed as private_data, instead of codec */ - return snd_hda_ctl_add(codec, mout->dig_out_nid, - snd_ctl_new1(&spdif_share_sw, mout)); + return snd_hda_ctl_add(codec, mout->dig_out_nid, kctl); } EXPORT_SYMBOL_HDA(snd_hda_create_spdif_share_sw); -- cgit v1.1 From 3bc085a12d8f9f3e45a4ac0cc24a34abd5b20657 Mon Sep 17 00:00:00 2001 From: Xi Wang Date: Thu, 7 Mar 2013 00:13:51 -0500 Subject: ALSA: hda/ca0132 - Avoid division by zero in dspxfr_one_seg() Move the zero check `hda_frame_size_words == 0' before the modulus `buffer_size_words % hda_frame_size_words'. Also remove the redundant null check `buffer_addx == NULL'. Signed-off-by: Xi Wang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_ca0132.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c index db02c1e..eefc456 100644 --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -2298,6 +2298,11 @@ static int dspxfr_one_seg(struct hda_codec *codec, hda_frame_size_words = ((sample_rate_div == 0) ? 0 : (num_chans * sample_rate_mul / sample_rate_div)); + if (hda_frame_size_words == 0) { + snd_printdd(KERN_ERR "frmsz zero\n"); + return -EINVAL; + } + buffer_size_words = min(buffer_size_words, (unsigned int)(UC_RANGE(chip_addx, 1) ? 65536 : 32768)); @@ -2308,8 +2313,7 @@ static int dspxfr_one_seg(struct hda_codec *codec, chip_addx, hda_frame_size_words, num_chans, sample_rate_mul, sample_rate_div, buffer_size_words); - if ((buffer_addx == NULL) || (hda_frame_size_words == 0) || - (buffer_size_words < hda_frame_size_words)) { + if (buffer_size_words < hda_frame_size_words) { snd_printdd(KERN_ERR "dspxfr_one_seg:failed\n"); return -EINVAL; } -- cgit v1.1 From 84dfd0ac231f69d70e100e712ad5e5f0092ad46b Mon Sep 17 00:00:00 2001 From: Kailang Yang Date: Thu, 7 Mar 2013 09:19:38 +0100 Subject: ALSA: hda - Add support of new codec ALC233 It's compatible with ALC282. Signed-off-by: Kailang Yang Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 2d4237b..563c24d 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3163,6 +3163,7 @@ static int patch_alc269(struct hda_codec *codec) case 0x10ec0290: spec->codec_variant = ALC269_TYPE_ALC280; break; + case 0x10ec0233: case 0x10ec0282: case 0x10ec0283: spec->codec_variant = ALC269_TYPE_ALC282; @@ -3862,6 +3863,7 @@ static int patch_alc680(struct hda_codec *codec) */ static const struct hda_codec_preset snd_hda_preset_realtek[] = { { .id = 0x10ec0221, .name = "ALC221", .patch = patch_alc269 }, + { .id = 0x10ec0233, .name = "ALC233", .patch = patch_alc269 }, { .id = 0x10ec0260, .name = "ALC260", .patch = patch_alc260 }, { .id = 0x10ec0262, .name = "ALC262", .patch = patch_alc262 }, { .id = 0x10ec0267, .name = "ALC267", .patch = patch_alc268 }, -- cgit v1.1 From 8360cb5f389ebd36b708978e0f776a285a2deb5a Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 28 Feb 2013 12:07:27 +0100 Subject: s390/scm_blk: fix request number accounting If a block device driver cannot fetch all requests from the blocklayer it's in his responsibility to call the request function at a later time. Normally this would be done after the next irq for the underlying device is handled. However in situations where we have no outstanding request we have to schedule the request function for a later time. This is determined using an internal counter of requests issued to the hardware. In some cases where we give a request back to the block layer unhandled the number of queued requests was not adjusted. Fix this class of failures by adjusting queued_requests in all functions used to give a request back to the block layer. Reviewed-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- drivers/s390/block/scm_blk.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index 9978ad4..d9c7e94 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -195,14 +195,18 @@ void scm_request_requeue(struct scm_request *scmrq) scm_release_cluster(scmrq); blk_requeue_request(bdev->rq, scmrq->request); + atomic_dec(&bdev->queued_reqs); scm_request_done(scmrq); scm_ensure_queue_restart(bdev); } void scm_request_finish(struct scm_request *scmrq) { + struct scm_blk_dev *bdev = scmrq->bdev; + scm_release_cluster(scmrq); blk_end_request_all(scmrq->request, scmrq->error); + atomic_dec(&bdev->queued_reqs); scm_request_done(scmrq); } @@ -231,11 +235,13 @@ static void scm_blk_request(struct request_queue *rq) return; } if (scm_need_cluster_request(scmrq)) { + atomic_inc(&bdev->queued_reqs); blk_start_request(req); scm_initiate_cluster_request(scmrq); return; } scm_request_prepare(scmrq); + atomic_inc(&bdev->queued_reqs); blk_start_request(req); ret = scm_start_aob(scmrq->aob); @@ -244,7 +250,6 @@ static void scm_blk_request(struct request_queue *rq) scm_request_requeue(scmrq); return; } - atomic_inc(&bdev->queued_reqs); } } @@ -310,7 +315,6 @@ static void scm_blk_tasklet(struct scm_blk_dev *bdev) } scm_request_finish(scmrq); - atomic_dec(&bdev->queued_reqs); spin_lock_irqsave(&bdev->lock, flags); } spin_unlock_irqrestore(&bdev->lock, flags); -- cgit v1.1 From 93481c90200c50c7874b6a773acc87095ee3907d Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 28 Feb 2013 12:07:38 +0100 Subject: s390/scm_drv: extend notify callback Extend the notify callback of scm_driver by an event parameter to allow to distinguish between different notifications. Reviewed-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/eadm.h | 4 +++- drivers/s390/block/scm_drv.c | 16 ++++++++++------ drivers/s390/cio/scm.c | 2 +- 3 files changed, 14 insertions(+), 8 deletions(-) diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index 8d48471..a4a1ea4 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -96,11 +96,13 @@ struct scm_device { #define OP_STATE_TEMP_ERR 2 #define OP_STATE_PERM_ERR 3 +enum scm_event {SCM_CHANGE}; + struct scm_driver { struct device_driver drv; int (*probe) (struct scm_device *scmdev); int (*remove) (struct scm_device *scmdev); - void (*notify) (struct scm_device *scmdev); + void (*notify) (struct scm_device *scmdev, enum scm_event event); void (*handler) (struct scm_device *scmdev, void *data, int error); }; diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c index 9fa0a90..ff8558c 100644 --- a/drivers/s390/block/scm_drv.c +++ b/drivers/s390/block/scm_drv.c @@ -13,12 +13,16 @@ #include #include "scm_blk.h" -static void notify(struct scm_device *scmdev) +static void scm_notify(struct scm_device *scmdev, enum scm_event event) { - pr_info("%lu: The capabilities of the SCM increment changed\n", - (unsigned long) scmdev->address); - SCM_LOG(2, "State changed"); - SCM_LOG_STATE(2, scmdev); + switch (event) { + case SCM_CHANGE: + pr_info("%lu: The capabilities of the SCM increment changed\n", + (unsigned long) scmdev->address); + SCM_LOG(2, "State changed"); + SCM_LOG_STATE(2, scmdev); + break; + } } static int scm_probe(struct scm_device *scmdev) @@ -64,7 +68,7 @@ static struct scm_driver scm_drv = { .name = "scm_block", .owner = THIS_MODULE, }, - .notify = notify, + .notify = scm_notify, .probe = scm_probe, .remove = scm_remove, .handler = scm_blk_irq, diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c index bcf20f3..31ac264 100644 --- a/drivers/s390/cio/scm.c +++ b/drivers/s390/cio/scm.c @@ -211,7 +211,7 @@ static void scmdev_update(struct scm_device *scmdev, struct sale *sale) goto out; scmdrv = to_scm_drv(scmdev->dev.driver); if (changed && scmdrv->notify) - scmdrv->notify(scmdev); + scmdrv->notify(scmdev, SCM_CHANGE); out: device_unlock(&scmdev->dev); if (changed) -- cgit v1.1 From 4fa3c019640ef776e393345ed35d9ec5c51aa3c1 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 28 Feb 2013 12:07:48 +0100 Subject: s390/scm_blk: suspend writes Stop writing to scm after certain error conditions such as a concurrent firmware upgrade. Resume to normal state once scm_blk_set_available is called (due to an scm availability notification). Reviewed-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/eadm.h | 2 ++ drivers/s390/block/scm_blk.c | 61 ++++++++++++++++++++++++++++++++++++++++---- drivers/s390/block/scm_blk.h | 2 ++ 3 files changed, 60 insertions(+), 5 deletions(-) diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index a4a1ea4..78141be 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -34,6 +34,8 @@ struct arsb { u32 reserved[4]; } __packed; +#define EQC_WR_PROHIBIT 22 + struct msb { u8 fmt:4; u8 oc:4; diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index d9c7e94..5ac9c93 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -135,6 +135,11 @@ static const struct block_device_operations scm_blk_devops = { .release = scm_release, }; +static bool scm_permit_request(struct scm_blk_dev *bdev, struct request *req) +{ + return rq_data_dir(req) != WRITE || bdev->state != SCM_WR_PROHIBIT; +} + static void scm_request_prepare(struct scm_request *scmrq) { struct scm_blk_dev *bdev = scmrq->bdev; @@ -222,6 +227,10 @@ static void scm_blk_request(struct request_queue *rq) if (req->cmd_type != REQ_TYPE_FS) continue; + if (!scm_permit_request(bdev, req)) { + scm_ensure_queue_restart(bdev); + return; + } scmrq = scm_request_fetch(); if (!scmrq) { SCM_LOG(5, "no request"); @@ -285,6 +294,38 @@ void scm_blk_irq(struct scm_device *scmdev, void *data, int error) tasklet_hi_schedule(&bdev->tasklet); } +static void scm_blk_handle_error(struct scm_request *scmrq) +{ + struct scm_blk_dev *bdev = scmrq->bdev; + unsigned long flags; + + if (scmrq->error != -EIO) + goto restart; + + /* For -EIO the response block is valid. */ + switch (scmrq->aob->response.eqc) { + case EQC_WR_PROHIBIT: + spin_lock_irqsave(&bdev->lock, flags); + if (bdev->state != SCM_WR_PROHIBIT) + pr_info("%lu: Write access to the SCM increment is suspended\n", + (unsigned long) bdev->scmdev->address); + bdev->state = SCM_WR_PROHIBIT; + spin_unlock_irqrestore(&bdev->lock, flags); + goto requeue; + default: + break; + } + +restart: + if (!scm_start_aob(scmrq->aob)) + return; + +requeue: + spin_lock_irqsave(&bdev->rq_lock, flags); + scm_request_requeue(scmrq); + spin_unlock_irqrestore(&bdev->rq_lock, flags); +} + static void scm_blk_tasklet(struct scm_blk_dev *bdev) { struct scm_request *scmrq; @@ -298,11 +339,8 @@ static void scm_blk_tasklet(struct scm_blk_dev *bdev) spin_unlock_irqrestore(&bdev->lock, flags); if (scmrq->error && scmrq->retries-- > 0) { - if (scm_start_aob(scmrq->aob)) { - spin_lock_irqsave(&bdev->rq_lock, flags); - scm_request_requeue(scmrq); - spin_unlock_irqrestore(&bdev->rq_lock, flags); - } + scm_blk_handle_error(scmrq); + /* Request restarted or requeued, handle next. */ spin_lock_irqsave(&bdev->lock, flags); continue; @@ -336,6 +374,7 @@ int scm_blk_dev_setup(struct scm_blk_dev *bdev, struct scm_device *scmdev) } bdev->scmdev = scmdev; + bdev->state = SCM_OPER; spin_lock_init(&bdev->rq_lock); spin_lock_init(&bdev->lock); INIT_LIST_HEAD(&bdev->finished_requests); @@ -400,6 +439,18 @@ void scm_blk_dev_cleanup(struct scm_blk_dev *bdev) put_disk(bdev->gendisk); } +void scm_blk_set_available(struct scm_blk_dev *bdev) +{ + unsigned long flags; + + spin_lock_irqsave(&bdev->lock, flags); + if (bdev->state == SCM_WR_PROHIBIT) + pr_info("%lu: Write access to the SCM increment is restored\n", + (unsigned long) bdev->scmdev->address); + bdev->state = SCM_OPER; + spin_unlock_irqrestore(&bdev->lock, flags); +} + static int __init scm_blk_init(void) { int ret = -EINVAL; diff --git a/drivers/s390/block/scm_blk.h b/drivers/s390/block/scm_blk.h index 3c1ccf4..8b387b3 100644 --- a/drivers/s390/block/scm_blk.h +++ b/drivers/s390/block/scm_blk.h @@ -21,6 +21,7 @@ struct scm_blk_dev { spinlock_t rq_lock; /* guard the request queue */ spinlock_t lock; /* guard the rest of the blockdev */ atomic_t queued_reqs; + enum {SCM_OPER, SCM_WR_PROHIBIT} state; struct list_head finished_requests; #ifdef CONFIG_SCM_BLOCK_CLUSTER_WRITE struct list_head cluster_list; @@ -48,6 +49,7 @@ struct scm_request { int scm_blk_dev_setup(struct scm_blk_dev *, struct scm_device *); void scm_blk_dev_cleanup(struct scm_blk_dev *); +void scm_blk_set_available(struct scm_blk_dev *); void scm_blk_irq(struct scm_device *, void *, int); void scm_request_finish(struct scm_request *); -- cgit v1.1 From aebfa669d9fe77876f120d3d9a28fee240fe5a8e Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 28 Feb 2013 12:07:55 +0100 Subject: s390/scm: process availability Let the bus code process scm availability information and notify scm device drivers about the new state. Reviewed-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/eadm.h | 2 +- drivers/s390/block/scm_drv.c | 7 +++++++ drivers/s390/cio/chsc.c | 17 +++++++++++++++++ drivers/s390/cio/chsc.h | 2 ++ drivers/s390/cio/scm.c | 16 ++++++++++++++++ 5 files changed, 43 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index 78141be..dc9200c 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -98,7 +98,7 @@ struct scm_device { #define OP_STATE_TEMP_ERR 2 #define OP_STATE_PERM_ERR 3 -enum scm_event {SCM_CHANGE}; +enum scm_event {SCM_CHANGE, SCM_AVAIL}; struct scm_driver { struct device_driver drv; diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c index ff8558c..5f6180d 100644 --- a/drivers/s390/block/scm_drv.c +++ b/drivers/s390/block/scm_drv.c @@ -15,6 +15,8 @@ static void scm_notify(struct scm_device *scmdev, enum scm_event event) { + struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev); + switch (event) { case SCM_CHANGE: pr_info("%lu: The capabilities of the SCM increment changed\n", @@ -22,6 +24,11 @@ static void scm_notify(struct scm_device *scmdev, enum scm_event event) SCM_LOG(2, "State changed"); SCM_LOG_STATE(2, scmdev); break; + case SCM_AVAIL: + SCM_LOG(2, "Increment available"); + SCM_LOG_STATE(2, scmdev); + scm_blk_set_available(bdev); + break; } } diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c index 31ceef1..e16c553 100644 --- a/drivers/s390/cio/chsc.c +++ b/drivers/s390/cio/chsc.c @@ -433,6 +433,20 @@ static void chsc_process_sei_scm_change(struct chsc_sei_nt0_area *sei_area) " failed (rc=%d).\n", ret); } +static void chsc_process_sei_scm_avail(struct chsc_sei_nt0_area *sei_area) +{ + int ret; + + CIO_CRW_EVENT(4, "chsc: scm available information\n"); + if (sei_area->rs != 7) + return; + + ret = scm_process_availability_information(); + if (ret) + CIO_CRW_EVENT(0, "chsc: process availability information" + " failed (rc=%d).\n", ret); +} + static void chsc_process_sei_nt2(struct chsc_sei_nt2_area *sei_area) { switch (sei_area->cc) { @@ -468,6 +482,9 @@ static void chsc_process_sei_nt0(struct chsc_sei_nt0_area *sei_area) case 12: /* scm change notification */ chsc_process_sei_scm_change(sei_area); break; + case 14: /* scm available notification */ + chsc_process_sei_scm_avail(sei_area); + break; default: /* other stuff */ CIO_CRW_EVENT(2, "chsc: sei nt0 unhandled cc=%d\n", sei_area->cc); diff --git a/drivers/s390/cio/chsc.h b/drivers/s390/cio/chsc.h index 227e05f..349d5fc 100644 --- a/drivers/s390/cio/chsc.h +++ b/drivers/s390/cio/chsc.h @@ -156,8 +156,10 @@ int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); #ifdef CONFIG_SCM_BUS int scm_update_information(void); +int scm_process_availability_information(void); #else /* CONFIG_SCM_BUS */ static inline int scm_update_information(void) { return 0; } +static inline int scm_process_availability_information(void) { return 0; } #endif /* CONFIG_SCM_BUS */ diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c index 31ac264..46ec256 100644 --- a/drivers/s390/cio/scm.c +++ b/drivers/s390/cio/scm.c @@ -297,6 +297,22 @@ int scm_update_information(void) return ret; } +static int scm_dev_avail(struct device *dev, void *unused) +{ + struct scm_driver *scmdrv = to_scm_drv(dev->driver); + struct scm_device *scmdev = to_scm_dev(dev); + + if (dev->driver && scmdrv->notify) + scmdrv->notify(scmdev, SCM_AVAIL); + + return 0; +} + +int scm_process_availability_information(void) +{ + return bus_for_each_dev(&scm_bus_type, NULL, NULL, scm_dev_avail); +} + static int __init scm_init(void) { int ret; -- cgit v1.1 From 9141770548d529b9d32d5b08d59b65ee65afe0d4 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 7 Mar 2013 01:08:55 -0800 Subject: fs: Limit sys_mount to only request filesystem modules (Part 2). Add missing MODULE_ALIAS_FS("ocfs2") how did I miss that? Remove unnecessary MODULE_ALIAS_FS("devpts") devpts can not be modular. Signed-off-by: "Eric W. Biederman" --- fs/devpts/inode.c | 1 - fs/ocfs2/super.c | 1 + 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/devpts/inode.c b/fs/devpts/inode.c index 79b6629..073d30b 100644 --- a/fs/devpts/inode.c +++ b/fs/devpts/inode.c @@ -510,7 +510,6 @@ static struct file_system_type devpts_fs_type = { .fs_flags = FS_USERNS_MOUNT | FS_USERNS_DEV_MOUNT, #endif }; -MODULE_ALIAS_FS("devpts"); /* * The normal naming convention is simply /dev/pts/; this conforms diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index 9b6910d..01b8516 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -1266,6 +1266,7 @@ static struct file_system_type ocfs2_fs_type = { .fs_flags = FS_REQUIRES_DEV|FS_RENAME_DOES_D_MOVE, .next = NULL }; +MODULE_ALIAS_FS("ocfs2"); static int ocfs2_check_set_options(struct super_block *sb, struct mount_options *options) -- cgit v1.1 From 4e0855dff094b0d56d6b5b271e0ce7851cc1e063 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Tue, 5 Mar 2013 09:42:59 +0000 Subject: e1000e: fix pci-device enable-counter balance This patch removes redundant and unbalanced pci_disable_device() from __e1000_shutdown(). pci_clear_master() is enough, device can go into suspended state with elevated enable_cnt. Bug was introduced in commit 23606cf5d1192c2b17912cb2ef6e62f9b11de133 ("e1000e / PCI / PM: Add basic runtime PM support (rev. 4)") in v2.6.35 Cc: Bruce Allan CC: Stable Signed-off-by: Konstantin Khlebnikov Acked-by: Rafael J. Wysocki Tested-by: Borislav Petkov Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/netdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index a177b8b..1799021 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -5986,7 +5986,7 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, */ e1000e_release_hw_control(adapter); - pci_disable_device(pdev); + pci_clear_master(pdev); return 0; } -- cgit v1.1 From 66148babe728f3e00e13c56f6b0ecf325abd80da Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Tue, 5 Mar 2013 09:43:04 +0000 Subject: e1000e: fix runtime power management transitions This patch removes redundant actions from driver and fixes its interaction with actions in pci-bus runtime power management code. It removes pci_save_state() from __e1000_shutdown() for normal adapters, PCI bus callbacks pci_pm_*() will do all this for us. Now __e1000_shutdown() switches to D3-state only quad-port adapters, because they needs quirk for clearing false-positive error from downsteam pci-e port. pci_save_state() now called after clearing bus-master bit, thus __e1000_resume() and e1000_io_slot_reset() must set it back after restoring configuration space. This patch set get_link_status before calling pm_runtime_put() in e1000_open() to allow e1000_idle() get real link status and schedule first runtime suspend. This patch also enables wakeup for device if management mode is enabled (like for WoL) as result pci_prepare_to_sleep() would setup wakeup without special actions like custom 'enable_wakeup' sign. Cc: Bruce Allan Signed-off-by: Konstantin Khlebnikov Acked-by: Rafael J. Wysocki Tested-by: Borislav Petkov Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/netdev.c | 78 +++++++----------------------- 1 file changed, 18 insertions(+), 60 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 1799021..2954cc7 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -4303,6 +4303,7 @@ static int e1000_open(struct net_device *netdev) netif_start_queue(netdev); adapter->idle_check = true; + hw->mac.get_link_status = true; pm_runtime_put(&pdev->dev); /* fire a link status change interrupt to start the watchdog */ @@ -5887,8 +5888,7 @@ release: return retval; } -static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, - bool runtime) +static int __e1000_shutdown(struct pci_dev *pdev, bool runtime) { struct net_device *netdev = pci_get_drvdata(pdev); struct e1000_adapter *adapter = netdev_priv(netdev); @@ -5912,10 +5912,6 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, } e1000e_reset_interrupt_capability(adapter); - retval = pci_save_state(pdev); - if (retval) - return retval; - status = er32(STATUS); if (status & E1000_STATUS_LU) wufc &= ~E1000_WUFC_LNKC; @@ -5971,13 +5967,6 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, ew32(WUFC, 0); } - *enable_wake = !!wufc; - - /* make sure adapter isn't asleep if manageability is enabled */ - if ((adapter->flags & FLAG_MNG_PT_ENABLED) || - (hw->mac.ops.check_mng_mode(hw))) - *enable_wake = true; - if (adapter->hw.phy.type == e1000_phy_igp_3) e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); @@ -5988,26 +5977,6 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, pci_clear_master(pdev); - return 0; -} - -static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) -{ - if (sleep && wake) { - pci_prepare_to_sleep(pdev); - return; - } - - pci_wake_from_d3(pdev, wake); - pci_set_power_state(pdev, PCI_D3hot); -} - -static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, - bool wake) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct e1000_adapter *adapter = netdev_priv(netdev); - /* The pci-e switch on some quad port adapters will report a * correctable error when the MAC transitions from D0 to D3. To * prevent this we need to mask off the correctable errors on the @@ -6021,12 +5990,13 @@ static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, (devctl & ~PCI_EXP_DEVCTL_CERE)); - e1000_power_off(pdev, sleep, wake); + pci_save_state(pdev); + pci_prepare_to_sleep(pdev); pcie_capability_write_word(us_dev, PCI_EXP_DEVCTL, devctl); - } else { - e1000_power_off(pdev, sleep, wake); } + + return 0; } #ifdef CONFIG_PCIEASPM @@ -6084,9 +6054,7 @@ static int __e1000_resume(struct pci_dev *pdev) if (aspm_disable_flag) e1000e_disable_aspm(pdev, aspm_disable_flag); - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - pci_save_state(pdev); + pci_set_master(pdev); e1000e_set_interrupt_capability(adapter); if (netif_running(netdev)) { @@ -6152,14 +6120,8 @@ static int __e1000_resume(struct pci_dev *pdev) static int e1000_suspend(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); - int retval; - bool wake; - - retval = __e1000_shutdown(pdev, &wake, false); - if (!retval) - e1000_complete_shutdown(pdev, true, wake); - return retval; + return __e1000_shutdown(pdev, false); } static int e1000_resume(struct device *dev) @@ -6182,13 +6144,10 @@ static int e1000_runtime_suspend(struct device *dev) struct net_device *netdev = pci_get_drvdata(pdev); struct e1000_adapter *adapter = netdev_priv(netdev); - if (e1000e_pm_ready(adapter)) { - bool wake; - - __e1000_shutdown(pdev, &wake, true); - } + if (!e1000e_pm_ready(adapter)) + return 0; - return 0; + return __e1000_shutdown(pdev, true); } static int e1000_idle(struct device *dev) @@ -6226,12 +6185,7 @@ static int e1000_runtime_resume(struct device *dev) static void e1000_shutdown(struct pci_dev *pdev) { - bool wake = false; - - __e1000_shutdown(pdev, &wake, false); - - if (system_state == SYSTEM_POWER_OFF) - e1000_complete_shutdown(pdev, false, wake); + __e1000_shutdown(pdev, false); } #ifdef CONFIG_NET_POLL_CONTROLLER @@ -6352,9 +6306,9 @@ static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) "Cannot re-enable PCI device after reset.\n"); result = PCI_ERS_RESULT_DISCONNECT; } else { - pci_set_master(pdev); pdev->state_saved = true; pci_restore_state(pdev); + pci_set_master(pdev); pci_enable_wake(pdev, PCI_D3hot, 0); pci_enable_wake(pdev, PCI_D3cold, 0); @@ -6783,7 +6737,11 @@ static int e1000_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* initialize the wol settings based on the eeprom settings */ adapter->wol = adapter->eeprom_wol; - device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); + + /* make sure adapter isn't asleep if manageability is enabled */ + if (adapter->wol || (adapter->flags & FLAG_MNG_PT_ENABLED) || + (hw->mac.ops.check_mng_mode(hw))) + device_wakeup_enable(&pdev->dev); /* save off EEPROM version number */ e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); -- cgit v1.1 From e60b22c5b7e59db09a7c9490b1e132c7e49ae904 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Tue, 5 Mar 2013 09:43:09 +0000 Subject: e1000e: fix accessing to suspended device This patch fixes some annoying messages like 'Error reading PHY register' and 'Hardware Erorr' and saves several seconds on reboot. Cc: Bruce Allan Signed-off-by: Konstantin Khlebnikov Acked-by: Rafael J. Wysocki Tested-by: Borislav Petkov Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ethtool.c | 13 +++++++++++++ drivers/net/ethernet/intel/e1000e/netdev.c | 2 ++ 2 files changed, 15 insertions(+) diff --git a/drivers/net/ethernet/intel/e1000e/ethtool.c b/drivers/net/ethernet/intel/e1000e/ethtool.c index 2c18137..f91a8f3 100644 --- a/drivers/net/ethernet/intel/e1000e/ethtool.c +++ b/drivers/net/ethernet/intel/e1000e/ethtool.c @@ -36,6 +36,7 @@ #include #include #include +#include #include "e1000.h" @@ -2229,7 +2230,19 @@ static int e1000e_get_ts_info(struct net_device *netdev, return 0; } +static int e1000e_ethtool_begin(struct net_device *netdev) +{ + return pm_runtime_get_sync(netdev->dev.parent); +} + +static void e1000e_ethtool_complete(struct net_device *netdev) +{ + pm_runtime_put_sync(netdev->dev.parent); +} + static const struct ethtool_ops e1000_ethtool_ops = { + .begin = e1000e_ethtool_begin, + .complete = e1000e_ethtool_complete, .get_settings = e1000_get_settings, .set_settings = e1000_set_settings, .get_drvinfo = e1000_get_drvinfo, diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 2954cc7..948b86ff 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -4663,6 +4663,7 @@ static void e1000_phy_read_status(struct e1000_adapter *adapter) (adapter->hw.phy.media_type == e1000_media_type_copper)) { int ret_val; + pm_runtime_get_sync(&adapter->pdev->dev); ret_val = e1e_rphy(hw, MII_BMCR, &phy->bmcr); ret_val |= e1e_rphy(hw, MII_BMSR, &phy->bmsr); ret_val |= e1e_rphy(hw, MII_ADVERTISE, &phy->advertise); @@ -4673,6 +4674,7 @@ static void e1000_phy_read_status(struct e1000_adapter *adapter) ret_val |= e1e_rphy(hw, MII_ESTATUS, &phy->estatus); if (ret_val) e_warn("Error reading PHY register\n"); + pm_runtime_put_sync(&adapter->pdev->dev); } else { /* Do not read PHY registers if link is not up * Set values to typical power-on defaults -- cgit v1.1 From de3cb945db4d8eb3b046dc7a5ea89a893372750c Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Mon, 4 Mar 2013 17:13:31 -0500 Subject: Btrfs: improve the delayed inode throttling The delayed inode code batches up changes to the btree in hopes of doing them in bulk. As the changes build up, processes kick off worker threads and wait for them to make progress. The current code kicks off an async work queue item for each delayed node, which creates a lot of churn. It also uses a fixed 1 HZ waiting period for the throttle, which allows us to build a lot of pending work and can slow down the commit. This changes us to watch a sequence counter as it is bumped during the operations. We kick off fewer work items and have each work item do more work. Signed-off-by: Chris Mason --- fs/btrfs/delayed-inode.c | 151 ++++++++++++++++++++++++++++------------------- fs/btrfs/delayed-inode.h | 2 + 2 files changed, 92 insertions(+), 61 deletions(-) diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index 0b278b1..14fce27 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -22,8 +22,9 @@ #include "disk-io.h" #include "transaction.h" -#define BTRFS_DELAYED_WRITEBACK 400 -#define BTRFS_DELAYED_BACKGROUND 100 +#define BTRFS_DELAYED_WRITEBACK 512 +#define BTRFS_DELAYED_BACKGROUND 128 +#define BTRFS_DELAYED_BATCH 16 static struct kmem_cache *delayed_node_cache; @@ -494,6 +495,15 @@ static int __btrfs_add_delayed_deletion_item(struct btrfs_delayed_node *node, BTRFS_DELAYED_DELETION_ITEM); } +static void finish_one_item(struct btrfs_delayed_root *delayed_root) +{ + int seq = atomic_inc_return(&delayed_root->items_seq); + if ((atomic_dec_return(&delayed_root->items) < + BTRFS_DELAYED_BACKGROUND || seq % BTRFS_DELAYED_BATCH == 0) && + waitqueue_active(&delayed_root->wait)) + wake_up(&delayed_root->wait); +} + static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) { struct rb_root *root; @@ -512,10 +522,8 @@ static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item) rb_erase(&delayed_item->rb_node, root); delayed_item->delayed_node->count--; - if (atomic_dec_return(&delayed_root->items) < - BTRFS_DELAYED_BACKGROUND && - waitqueue_active(&delayed_root->wait)) - wake_up(&delayed_root->wait); + + finish_one_item(delayed_root); } static void btrfs_release_delayed_item(struct btrfs_delayed_item *item) @@ -1056,10 +1064,7 @@ static void btrfs_release_delayed_inode(struct btrfs_delayed_node *delayed_node) delayed_node->count--; delayed_root = delayed_node->root->fs_info->delayed_root; - if (atomic_dec_return(&delayed_root->items) < - BTRFS_DELAYED_BACKGROUND && - waitqueue_active(&delayed_root->wait)) - wake_up(&delayed_root->wait); + finish_one_item(delayed_root); } } @@ -1304,35 +1309,44 @@ void btrfs_remove_delayed_node(struct inode *inode) btrfs_release_delayed_node(delayed_node); } -struct btrfs_async_delayed_node { - struct btrfs_root *root; - struct btrfs_delayed_node *delayed_node; +struct btrfs_async_delayed_work { + struct btrfs_delayed_root *delayed_root; + int nr; struct btrfs_work work; }; -static void btrfs_async_run_delayed_node_done(struct btrfs_work *work) +static void btrfs_async_run_delayed_root(struct btrfs_work *work) { - struct btrfs_async_delayed_node *async_node; + struct btrfs_async_delayed_work *async_work; + struct btrfs_delayed_root *delayed_root; struct btrfs_trans_handle *trans; struct btrfs_path *path; struct btrfs_delayed_node *delayed_node = NULL; struct btrfs_root *root; struct btrfs_block_rsv *block_rsv; - int need_requeue = 0; + int total_done = 0; - async_node = container_of(work, struct btrfs_async_delayed_node, work); + async_work = container_of(work, struct btrfs_async_delayed_work, work); + delayed_root = async_work->delayed_root; path = btrfs_alloc_path(); if (!path) goto out; - path->leave_spinning = 1; - delayed_node = async_node->delayed_node; +again: + if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND / 2) + goto free_path; + + delayed_node = btrfs_first_prepared_delayed_node(delayed_root); + if (!delayed_node) + goto free_path; + + path->leave_spinning = 1; root = delayed_node->root; trans = btrfs_join_transaction(root); if (IS_ERR(trans)) - goto free_path; + goto release_path; block_rsv = trans->block_rsv; trans->block_rsv = &root->fs_info->delayed_block_rsv; @@ -1363,57 +1377,47 @@ static void btrfs_async_run_delayed_node_done(struct btrfs_work *work) * Task1 will sleep until the transaction is commited. */ mutex_lock(&delayed_node->mutex); - if (delayed_node->count) - need_requeue = 1; - else - btrfs_dequeue_delayed_node(root->fs_info->delayed_root, - delayed_node); + btrfs_dequeue_delayed_node(root->fs_info->delayed_root, delayed_node); mutex_unlock(&delayed_node->mutex); trans->block_rsv = block_rsv; btrfs_end_transaction_dmeta(trans, root); btrfs_btree_balance_dirty_nodelay(root); + +release_path: + btrfs_release_path(path); + total_done++; + + btrfs_release_prepared_delayed_node(delayed_node); + if (async_work->nr == 0 || total_done < async_work->nr) + goto again; + free_path: btrfs_free_path(path); out: - if (need_requeue) - btrfs_requeue_work(&async_node->work); - else { - btrfs_release_prepared_delayed_node(delayed_node); - kfree(async_node); - } + wake_up(&delayed_root->wait); + kfree(async_work); } + static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root, - struct btrfs_root *root, int all) + struct btrfs_root *root, int nr) { - struct btrfs_async_delayed_node *async_node; - struct btrfs_delayed_node *curr; - int count = 0; + struct btrfs_async_delayed_work *async_work; -again: - curr = btrfs_first_prepared_delayed_node(delayed_root); - if (!curr) + if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) return 0; - async_node = kmalloc(sizeof(*async_node), GFP_NOFS); - if (!async_node) { - btrfs_release_prepared_delayed_node(curr); + async_work = kmalloc(sizeof(*async_work), GFP_NOFS); + if (!async_work) return -ENOMEM; - } - - async_node->root = root; - async_node->delayed_node = curr; - - async_node->work.func = btrfs_async_run_delayed_node_done; - async_node->work.flags = 0; - btrfs_queue_worker(&root->fs_info->delayed_workers, &async_node->work); - count++; - - if (all || count < 4) - goto again; + async_work->delayed_root = delayed_root; + async_work->work.func = btrfs_async_run_delayed_root; + async_work->work.flags = 0; + async_work->nr = nr; + btrfs_queue_worker(&root->fs_info->delayed_workers, &async_work->work); return 0; } @@ -1424,30 +1428,55 @@ void btrfs_assert_delayed_root_empty(struct btrfs_root *root) WARN_ON(btrfs_first_delayed_node(delayed_root)); } +static int refs_newer(struct btrfs_delayed_root *delayed_root, + int seq, int count) +{ + int val = atomic_read(&delayed_root->items_seq); + + if (val < seq || val >= seq + count) + return 1; + return 0; +} + void btrfs_balance_delayed_items(struct btrfs_root *root) { struct btrfs_delayed_root *delayed_root; + int seq; delayed_root = btrfs_get_delayed_root(root); if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND) return; + seq = atomic_read(&delayed_root->items_seq); + if (atomic_read(&delayed_root->items) >= BTRFS_DELAYED_WRITEBACK) { int ret; - ret = btrfs_wq_run_delayed_node(delayed_root, root, 1); + DEFINE_WAIT(__wait); + + ret = btrfs_wq_run_delayed_node(delayed_root, root, 0); if (ret) return; - wait_event_interruptible_timeout( - delayed_root->wait, - (atomic_read(&delayed_root->items) < - BTRFS_DELAYED_BACKGROUND), - HZ); - return; + while (1) { + prepare_to_wait(&delayed_root->wait, &__wait, + TASK_INTERRUPTIBLE); + + if (refs_newer(delayed_root, seq, + BTRFS_DELAYED_BATCH) || + atomic_read(&delayed_root->items) < + BTRFS_DELAYED_BACKGROUND) { + break; + } + if (!signal_pending(current)) + schedule(); + else + break; + } + finish_wait(&delayed_root->wait, &__wait); } - btrfs_wq_run_delayed_node(delayed_root, root, 0); + btrfs_wq_run_delayed_node(delayed_root, root, BTRFS_DELAYED_BATCH); } /* Will return 0 or -ENOMEM */ diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h index 78b6ad0..1d5c5f7 100644 --- a/fs/btrfs/delayed-inode.h +++ b/fs/btrfs/delayed-inode.h @@ -43,6 +43,7 @@ struct btrfs_delayed_root { */ struct list_head prepare_list; atomic_t items; /* for delayed items */ + atomic_t items_seq; /* for delayed items */ int nodes; /* for delayed nodes */ wait_queue_head_t wait; }; @@ -86,6 +87,7 @@ static inline void btrfs_init_delayed_root( struct btrfs_delayed_root *delayed_root) { atomic_set(&delayed_root->items, 0); + atomic_set(&delayed_root->items_seq, 0); delayed_root->nodes = 0; spin_lock_init(&delayed_root->lock); init_waitqueue_head(&delayed_root->wait); -- cgit v1.1 From 69a4cfdd444d1fe5c24d29b3a063964ac165d2cd Mon Sep 17 00:00:00 2001 From: Sean Connor Date: Thu, 28 Feb 2013 09:20:00 -0500 Subject: ALSA: ice1712: Initialize card->private_data properly Set card->private_data in snd_ice1712_create for fixing NULL dereference in snd_ice1712_remove(). Signed-off-by: Sean Connor Cc: Signed-off-by: Takashi Iwai --- sound/pci/ice1712/ice1712.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c index 2ffdc35..806407a 100644 --- a/sound/pci/ice1712/ice1712.c +++ b/sound/pci/ice1712/ice1712.c @@ -2594,6 +2594,8 @@ static int snd_ice1712_create(struct snd_card *card, snd_ice1712_proc_init(ice); synchronize_irq(pci->irq); + card->private_data = ice; + err = pci_request_regions(pci, "ICE1712"); if (err < 0) { kfree(ice); -- cgit v1.1 From dcd9006b1b053c7b1cebe81333261d4fd492ffeb Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 5 Mar 2013 17:09:00 +0100 Subject: HID: logitech-dj: do not directly call hid_output_raw_report() during probe hid_output_raw_report() makes a direct call to usb_control_msg(). However, some USB3 boards have shown that the usb device is not ready during the .probe(). This blocks the entire usb device, and the paired mice, keyboards are not functional. The dmesg output is the following: [ 11.912287] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw0: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-2/input2 [ 11.912537] logitech-djreceiver 0003:046D:C52B.0003: logi_dj_probe:logi_dj_recv_query_paired_devices error:-32 [ 11.912636] logitech-djreceiver: probe of 0003:046D:C52B.0003 failed with error -32 Relying on the scheduled call to usbhid_submit_report() fixes the problem. related bugs: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1072082 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1039143 https://bugzilla.redhat.com/show_bug.cgi?id=840391 https://bugzilla.kernel.org/show_bug.cgi?id=49781 Reported-and-tested-by: Bob Bowles Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-logitech-dj.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/hid/hid-logitech-dj.c b/drivers/hid/hid-logitech-dj.c index 9500f2f..8758f38c 100644 --- a/drivers/hid/hid-logitech-dj.c +++ b/drivers/hid/hid-logitech-dj.c @@ -459,19 +459,25 @@ static int logi_dj_recv_send_report(struct dj_receiver_dev *djrcv_dev, struct dj_report *dj_report) { struct hid_device *hdev = djrcv_dev->hdev; - int sent_bytes; + struct hid_report *report; + struct hid_report_enum *output_report_enum; + u8 *data = (u8 *)(&dj_report->device_index); + int i; - if (!hdev->hid_output_raw_report) { - dev_err(&hdev->dev, "%s:" - "hid_output_raw_report is null\n", __func__); + output_report_enum = &hdev->report_enum[HID_OUTPUT_REPORT]; + report = output_report_enum->report_id_hash[REPORT_ID_DJ_SHORT]; + + if (!report) { + dev_err(&hdev->dev, "%s: unable to find dj report\n", __func__); return -ENODEV; } - sent_bytes = hdev->hid_output_raw_report(hdev, (u8 *) dj_report, - sizeof(struct dj_report), - HID_OUTPUT_REPORT); + for (i = 0; i < report->field[0]->report_count; i++) + report->field[0]->value[i] = data[i]; + + usbhid_submit_report(hdev, report, USB_DIR_OUT); - return (sent_bytes < 0) ? sent_bytes : 0; + return 0; } static int logi_dj_recv_query_paired_devices(struct dj_receiver_dev *djrcv_dev) -- cgit v1.1 From d8741e2e88ac9a458765a0c7b4e6542d7c038334 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 5 Mar 2013 10:25:16 -0500 Subject: tracing: Add help of snapshot feature when snapshot is empty When cat'ing the snapshot file, instead of showing an empty trace header like the trace file does, show how to use the snapshot feature. Also, this is a good place to show if the snapshot has been allocated or not. Users may want to "pre allocate" the snapshot to have a fast "swap" of the current buffer. Otherwise, a swap would be slow and might fail as it would need to allocate the snapshot buffer, and that might fail under tight memory constraints. Here's what it looked like before: # tracer: nop # # entries-in-buffer/entries-written: 0/0 #P:4 # # _-----=> irqs-off # / _----=> need-resched # | / _---=> hardirq/softirq # || / _--=> preempt-depth # ||| / delay # TASK-PID CPU# |||| TIMESTAMP FUNCTION # | | | |||| | | Here's what it looks like now: # tracer: nop # # # * Snapshot is freed * # # Snapshot commands: # echo 0 > snapshot : Clears and frees snapshot buffer # echo 1 > snapshot : Allocates snapshot buffer, if not already allocated. # Takes a snapshot of the main buffer. # echo 2 > snapshot : Clears snapshot buffer (but does not allocate) # (Doesn't have to be '2' works with any number that # is not a '0' or '1') Acked-by: Hiraku Toyooka Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index c2e2c23..9e3120b 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2400,6 +2400,27 @@ static void test_ftrace_alive(struct seq_file *m) seq_printf(m, "# MAY BE MISSING FUNCTION EVENTS\n"); } +#ifdef CONFIG_TRACER_MAX_TRACE +static void print_snapshot_help(struct seq_file *m, struct trace_iterator *iter) +{ + if (iter->trace->allocated_snapshot) + seq_printf(m, "#\n# * Snapshot is allocated *\n#\n"); + else + seq_printf(m, "#\n# * Snapshot is freed *\n#\n"); + + seq_printf(m, "# Snapshot commands:\n"); + seq_printf(m, "# echo 0 > snapshot : Clears and frees snapshot buffer\n"); + seq_printf(m, "# echo 1 > snapshot : Allocates snapshot buffer, if not already allocated.\n"); + seq_printf(m, "# Takes a snapshot of the main buffer.\n"); + seq_printf(m, "# echo 2 > snapshot : Clears snapshot buffer (but does not allocate)\n"); + seq_printf(m, "# (Doesn't have to be '2' works with any number that\n"); + seq_printf(m, "# is not a '0' or '1')\n"); +} +#else +/* Should never be called */ +static inline void print_snapshot_help(struct seq_file *m, struct trace_iterator *iter) { } +#endif + static int s_show(struct seq_file *m, void *v) { struct trace_iterator *iter = v; @@ -2411,7 +2432,9 @@ static int s_show(struct seq_file *m, void *v) seq_puts(m, "#\n"); test_ftrace_alive(m); } - if (iter->trace && iter->trace->print_header) + if (iter->snapshot && trace_empty(iter)) + print_snapshot_help(m, iter); + else if (iter->trace && iter->trace->print_header) iter->trace->print_header(m); else trace_default_header(m); -- cgit v1.1 From c9960e48543799f168c4c9486f9790fb686ce5a8 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 5 Mar 2013 10:53:02 -0500 Subject: tracing: Do not return EINVAL in snapshot when not allocated To use the tracing snapshot feature, writing a '1' into the snapshot file causes the snapshot buffer to be allocated if it has not already been allocated and dose a 'swap' with the main buffer, so that the snapshot now contains what was in the main buffer, and the main buffer now writes to what was the snapshot buffer. To free the snapshot buffer, a '0' is written into the snapshot file. To clear the snapshot buffer, any number but a '0' or '1' is written into the snapshot file. But if the file is not allocated it returns -EINVAL error code. This is rather pointless. It is better just to do nothing and return success. Acked-by: Hiraku Toyooka Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 9e3120b..1f835a8 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4167,8 +4167,6 @@ tracing_snapshot_write(struct file *filp, const char __user *ubuf, size_t cnt, default: if (current_trace->allocated_snapshot) tracing_reset_online_cpus(&max_tr); - else - ret = -EINVAL; break; } -- cgit v1.1 From 455bd4c430b0c0a361f38e8658a0d6cb469942b5 Mon Sep 17 00:00:00 2001 From: Ivan Djelic Date: Wed, 6 Mar 2013 20:09:27 +0100 Subject: ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations Recent GCC versions (e.g. GCC-4.7.2) perform optimizations based on assumptions about the implementation of memset and similar functions. The current ARM optimized memset code does not return the value of its first argument, as is usually expected from standard implementations. For instance in the following function: void debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter) { memset(waiter, MUTEX_DEBUG_INIT, sizeof(*waiter)); waiter->magic = waiter; INIT_LIST_HEAD(&waiter->list); } compiled as: 800554d0 : 800554d0: e92d4008 push {r3, lr} 800554d4: e1a00001 mov r0, r1 800554d8: e3a02010 mov r2, #16 ; 0x10 800554dc: e3a01011 mov r1, #17 ; 0x11 800554e0: eb04426e bl 80165ea0 800554e4: e1a03000 mov r3, r0 800554e8: e583000c str r0, [r3, #12] 800554ec: e5830000 str r0, [r3] 800554f0: e5830004 str r0, [r3, #4] 800554f4: e8bd8008 pop {r3, pc} GCC assumes memset returns the value of pointer 'waiter' in register r0; causing register/memory corruptions. This patch fixes the return value of the assembly version of memset. It adds a 'mov' instruction and merges an additional load+store into existing load/store instructions. For ease of review, here is a breakdown of the patch into 4 simple steps: Step 1 ====== Perform the following substitutions: ip -> r8, then r0 -> ip, and insert 'mov ip, r0' as the first statement of the function. At this point, we have a memset() implementation returning the proper result, but corrupting r8 on some paths (the ones that were using ip). Step 2 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 1: save r8: - str lr, [sp, #-4]! + stmfd sp!, {r8, lr} and restore r8 on both exit paths: - ldmeqfd sp!, {pc} @ Now <64 bytes to go. + ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go. (...) tst r2, #16 stmneia ip!, {r1, r3, r8, lr} - ldr lr, [sp], #4 + ldmfd sp!, {r8, lr} Step 3 ====== Make sure r8 is saved and restored when (! CALGN(1)+0) == 0: save r8: - stmfd sp!, {r4-r7, lr} + stmfd sp!, {r4-r8, lr} and restore r8 on both exit paths: bgt 3b - ldmeqfd sp!, {r4-r7, pc} + ldmeqfd sp!, {r4-r8, pc} (...) tst r2, #16 stmneia ip!, {r4-r7} - ldmfd sp!, {r4-r7, lr} + ldmfd sp!, {r4-r8, lr} Step 4 ====== Rewrite register list "r4-r7, r8" as "r4-r8". Signed-off-by: Ivan Djelic Reviewed-by: Nicolas Pitre Signed-off-by: Dirk Behme Signed-off-by: Russell King --- arch/arm/lib/memset.S | 85 ++++++++++++++++++++++++++------------------------- 1 file changed, 44 insertions(+), 41 deletions(-) diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S index 650d592..d912e73 100644 --- a/arch/arm/lib/memset.S +++ b/arch/arm/lib/memset.S @@ -19,9 +19,9 @@ 1: subs r2, r2, #4 @ 1 do we have enough blt 5f @ 1 bytes to align with? cmp r3, #2 @ 1 - strltb r1, [r0], #1 @ 1 - strleb r1, [r0], #1 @ 1 - strb r1, [r0], #1 @ 1 + strltb r1, [ip], #1 @ 1 + strleb r1, [ip], #1 @ 1 + strb r1, [ip], #1 @ 1 add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3)) /* * The pointer is now aligned and the length is adjusted. Try doing the @@ -29,10 +29,14 @@ */ ENTRY(memset) - ands r3, r0, #3 @ 1 unaligned? +/* + * Preserve the contents of r0 for the return value. + */ + mov ip, r0 + ands r3, ip, #3 @ 1 unaligned? bne 1b @ 1 /* - * we know that the pointer in r0 is aligned to a word boundary. + * we know that the pointer in ip is aligned to a word boundary. */ orr r1, r1, r1, lsl #8 orr r1, r1, r1, lsl #16 @@ -43,29 +47,28 @@ ENTRY(memset) #if ! CALGN(1)+0 /* - * We need an extra register for this loop - save the return address and - * use the LR + * We need 2 extra registers for this loop - use r8 and the LR */ - str lr, [sp, #-4]! - mov ip, r1 + stmfd sp!, {r8, lr} + mov r8, r1 mov lr, r1 2: subs r2, r2, #64 - stmgeia r0!, {r1, r3, ip, lr} @ 64 bytes at a time. - stmgeia r0!, {r1, r3, ip, lr} - stmgeia r0!, {r1, r3, ip, lr} - stmgeia r0!, {r1, r3, ip, lr} + stmgeia ip!, {r1, r3, r8, lr} @ 64 bytes at a time. + stmgeia ip!, {r1, r3, r8, lr} + stmgeia ip!, {r1, r3, r8, lr} + stmgeia ip!, {r1, r3, r8, lr} bgt 2b - ldmeqfd sp!, {pc} @ Now <64 bytes to go. + ldmeqfd sp!, {r8, pc} @ Now <64 bytes to go. /* * No need to correct the count; we're only testing bits from now on */ tst r2, #32 - stmneia r0!, {r1, r3, ip, lr} - stmneia r0!, {r1, r3, ip, lr} + stmneia ip!, {r1, r3, r8, lr} + stmneia ip!, {r1, r3, r8, lr} tst r2, #16 - stmneia r0!, {r1, r3, ip, lr} - ldr lr, [sp], #4 + stmneia ip!, {r1, r3, r8, lr} + ldmfd sp!, {r8, lr} #else @@ -74,54 +77,54 @@ ENTRY(memset) * whole cache lines at once. */ - stmfd sp!, {r4-r7, lr} + stmfd sp!, {r4-r8, lr} mov r4, r1 mov r5, r1 mov r6, r1 mov r7, r1 - mov ip, r1 + mov r8, r1 mov lr, r1 cmp r2, #96 - tstgt r0, #31 + tstgt ip, #31 ble 3f - and ip, r0, #31 - rsb ip, ip, #32 - sub r2, r2, ip - movs ip, ip, lsl #(32 - 4) - stmcsia r0!, {r4, r5, r6, r7} - stmmiia r0!, {r4, r5} - tst ip, #(1 << 30) - mov ip, r1 - strne r1, [r0], #4 + and r8, ip, #31 + rsb r8, r8, #32 + sub r2, r2, r8 + movs r8, r8, lsl #(32 - 4) + stmcsia ip!, {r4, r5, r6, r7} + stmmiia ip!, {r4, r5} + tst r8, #(1 << 30) + mov r8, r1 + strne r1, [ip], #4 3: subs r2, r2, #64 - stmgeia r0!, {r1, r3-r7, ip, lr} - stmgeia r0!, {r1, r3-r7, ip, lr} + stmgeia ip!, {r1, r3-r8, lr} + stmgeia ip!, {r1, r3-r8, lr} bgt 3b - ldmeqfd sp!, {r4-r7, pc} + ldmeqfd sp!, {r4-r8, pc} tst r2, #32 - stmneia r0!, {r1, r3-r7, ip, lr} + stmneia ip!, {r1, r3-r8, lr} tst r2, #16 - stmneia r0!, {r4-r7} - ldmfd sp!, {r4-r7, lr} + stmneia ip!, {r4-r7} + ldmfd sp!, {r4-r8, lr} #endif 4: tst r2, #8 - stmneia r0!, {r1, r3} + stmneia ip!, {r1, r3} tst r2, #4 - strne r1, [r0], #4 + strne r1, [ip], #4 /* * When we get here, we've got less than 4 bytes to zero. We * may have an unaligned pointer as well. */ 5: tst r2, #2 - strneb r1, [r0], #1 - strneb r1, [r0], #1 + strneb r1, [ip], #1 + strneb r1, [ip], #1 tst r2, #1 - strneb r1, [r0], #1 + strneb r1, [ip], #1 mov pc, lr ENDPROC(memset) -- cgit v1.1 From a7dc19b8652c862d5b7c4d2339bd3c428bd29c4a Mon Sep 17 00:00:00 2001 From: Mark Rutland Date: Thu, 7 Mar 2013 15:09:24 +0000 Subject: clockevents: Don't allow dummy broadcast timers Currently tick_check_broadcast_device doesn't reject clock_event_devices with CLOCK_EVT_FEAT_DUMMY, and may select them in preference to real hardware if they have a higher rating value. In this situation, the dummy timer is responsible for broadcasting to itself, and the core clockevents code may attempt to call non-existent callbacks for programming the dummy, eventually leading to a panic. This patch makes tick_check_broadcast_device always reject dummy timers, preventing this problem. Signed-off-by: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: Jon Medhurst (Tixy) Cc: stable@vger.kernel.org Signed-off-by: Thomas Gleixner --- kernel/time/tick-broadcast.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 2fb8cb8..7f32fe0 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -67,7 +67,8 @@ static void tick_broadcast_start_periodic(struct clock_event_device *bc) */ int tick_check_broadcast_device(struct clock_event_device *dev) { - if ((tick_broadcast_device.evtdev && + if ((dev->features & CLOCK_EVT_FEAT_DUMMY) || + (tick_broadcast_device.evtdev && tick_broadcast_device.evtdev->rating >= dev->rating) || (dev->features & CLOCK_EVT_FEAT_C3STOP)) return 0; -- cgit v1.1 From cc9945bf9cac03860b2f7d59882263c965c6e3af Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 26 Feb 2013 16:17:33 -0500 Subject: drm/radeon: don't set hpd, afmt interrupts when interrupts are disabled Avoids splatter if the interrupt handler is not registered due to acceleration being disabled. Signed-off-by: Alex Deucher Reviewed-by: Jerome Glisse Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_irq_kms.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_irq_kms.c b/drivers/gpu/drm/radeon/radeon_irq_kms.c index 90374dd..48f80cd 100644 --- a/drivers/gpu/drm/radeon/radeon_irq_kms.c +++ b/drivers/gpu/drm/radeon/radeon_irq_kms.c @@ -400,6 +400,9 @@ void radeon_irq_kms_enable_afmt(struct radeon_device *rdev, int block) { unsigned long irqflags; + if (!rdev->ddev->irq_enabled) + return; + spin_lock_irqsave(&rdev->irq.lock, irqflags); rdev->irq.afmt[block] = true; radeon_irq_set(rdev); @@ -419,6 +422,9 @@ void radeon_irq_kms_disable_afmt(struct radeon_device *rdev, int block) { unsigned long irqflags; + if (!rdev->ddev->irq_enabled) + return; + spin_lock_irqsave(&rdev->irq.lock, irqflags); rdev->irq.afmt[block] = false; radeon_irq_set(rdev); @@ -438,6 +444,9 @@ void radeon_irq_kms_enable_hpd(struct radeon_device *rdev, unsigned hpd_mask) unsigned long irqflags; int i; + if (!rdev->ddev->irq_enabled) + return; + spin_lock_irqsave(&rdev->irq.lock, irqflags); for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) rdev->irq.hpd[i] |= !!(hpd_mask & (1 << i)); @@ -458,6 +467,9 @@ void radeon_irq_kms_disable_hpd(struct radeon_device *rdev, unsigned hpd_mask) unsigned long irqflags; int i; + if (!rdev->ddev->irq_enabled) + return; + spin_lock_irqsave(&rdev->irq.lock, irqflags); for (i = 0; i < RADEON_MAX_HPD_PINS; ++i) rdev->irq.hpd[i] &= !(hpd_mask & (1 << i)); -- cgit v1.1 From e8fc41377f5037ff7a661ea06adc05f1daec1548 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Wed, 27 Feb 2013 12:01:58 -0500 Subject: drm/radeon: add primary dac adj quirk for R200 board vbios values are wrong leading to colors that are too bright. Use the default values instead. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_combios.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c index 3e403bd..78edadc 100644 --- a/drivers/gpu/drm/radeon/radeon_combios.c +++ b/drivers/gpu/drm/radeon/radeon_combios.c @@ -970,6 +970,15 @@ struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct found = 1; } + /* quirks */ + /* Radeon 9100 (R200) */ + if ((dev->pdev->device == 0x514D) && + (dev->pdev->subsystem_vendor == 0x174B) && + (dev->pdev->subsystem_device == 0x7149)) { + /* vbios value is bad, use the default */ + found = 0; + } + if (!found) /* fallback to defaults */ radeon_legacy_get_primary_dac_info_from_table(rdev, p_dac); -- cgit v1.1 From d808fc882928bfe3cab87dd960ca28715e461ce4 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 28 Feb 2013 10:03:08 -0500 Subject: drm/radeon: skip MC reset as it's probably not hung The MC is mostly likely busy (e.g., display requests), not hung so no need to reset it. Doing an MC reset is tricky and not particularly reliable. Fixes hangs in certain cases. Reported-by: Josh Boyer Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/evergreen.c | 6 ++++++ drivers/gpu/drm/radeon/ni.c | 6 ++++++ drivers/gpu/drm/radeon/r600.c | 6 ++++++ drivers/gpu/drm/radeon/si.c | 6 ++++++ 4 files changed, 24 insertions(+) diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c index 3c38ea4..305a657 100644 --- a/drivers/gpu/drm/radeon/evergreen.c +++ b/drivers/gpu/drm/radeon/evergreen.c @@ -2438,6 +2438,12 @@ static u32 evergreen_gpu_check_soft_reset(struct radeon_device *rdev) if (tmp & L2_BUSY) reset_mask |= RADEON_RESET_VMC; + /* Skip MC reset as it's mostly likely not hung, just busy */ + if (reset_mask & RADEON_RESET_MC) { + DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask); + reset_mask &= ~RADEON_RESET_MC; + } + return reset_mask; } diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index 7cead76..d4c633e1 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1381,6 +1381,12 @@ static u32 cayman_gpu_check_soft_reset(struct radeon_device *rdev) if (tmp & L2_BUSY) reset_mask |= RADEON_RESET_VMC; + /* Skip MC reset as it's mostly likely not hung, just busy */ + if (reset_mask & RADEON_RESET_MC) { + DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask); + reset_mask &= ~RADEON_RESET_MC; + } + return reset_mask; } diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index 6d4b561..0740db3 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -1394,6 +1394,12 @@ static u32 r600_gpu_check_soft_reset(struct radeon_device *rdev) if (r600_is_display_hung(rdev)) reset_mask |= RADEON_RESET_DISPLAY; + /* Skip MC reset as it's mostly likely not hung, just busy */ + if (reset_mask & RADEON_RESET_MC) { + DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask); + reset_mask &= ~RADEON_RESET_MC; + } + return reset_mask; } diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 80979ed..9128120 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -2284,6 +2284,12 @@ static u32 si_gpu_check_soft_reset(struct radeon_device *rdev) if (tmp & L2_BUSY) reset_mask |= RADEON_RESET_VMC; + /* Skip MC reset as it's mostly likely not hung, just busy */ + if (reset_mask & RADEON_RESET_MC) { + DRM_DEBUG("MC busy: 0x%08X, clearing.\n", reset_mask); + reset_mask &= ~RADEON_RESET_MC; + } + return reset_mask; } -- cgit v1.1 From 774c389fae5e5a78a4aa75f927ab59fa0ff8a0d2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Fri, 1 Mar 2013 13:40:31 +0100 Subject: drm/radeon: don't check mipmap alignment if MIP_ADDRESS is FMASK MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The MIP_ADDRESS state has 2 meanings. If the texture has one sample per pixel, it's a pointer to the mipmap chain. If the texture has multiple samples per pixel, it's a pointer to FMASK, a metadata buffer needed for reading compressed MSAA textures. The mipmap alignment rules do not apply to FMASK. Signed-off-by: Marek Olšák Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/evergreen_cs.c | 2 +- drivers/gpu/drm/radeon/radeon_drv.c | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/evergreen_cs.c b/drivers/gpu/drm/radeon/evergreen_cs.c index 99fb132..eb8ac31 100644 --- a/drivers/gpu/drm/radeon/evergreen_cs.c +++ b/drivers/gpu/drm/radeon/evergreen_cs.c @@ -834,7 +834,7 @@ static int evergreen_cs_track_validate_texture(struct radeon_cs_parser *p, __func__, __LINE__, toffset, surf.base_align); return -EINVAL; } - if (moffset & (surf.base_align - 1)) { + if (surf.nsamples <= 1 && moffset & (surf.base_align - 1)) { dev_warn(p->dev, "%s:%d mipmap bo base %ld not aligned with %ld\n", __func__, __LINE__, moffset, surf.base_align); return -EINVAL; diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c index 1677584..66a7f0f 100644 --- a/drivers/gpu/drm/radeon/radeon_drv.c +++ b/drivers/gpu/drm/radeon/radeon_drv.c @@ -70,9 +70,10 @@ * 2.27.0 - r600-SI: Add CS ioctl support for async DMA * 2.28.0 - r600-eg: Add MEM_WRITE packet support * 2.29.0 - R500 FP16 color clear registers + * 2.30.0 - fix for FMASK texturing */ #define KMS_DRIVER_MAJOR 2 -#define KMS_DRIVER_MINOR 29 +#define KMS_DRIVER_MINOR 30 #define KMS_DRIVER_PATCHLEVEL 0 int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags); int radeon_driver_unload_kms(struct drm_device *dev); -- cgit v1.1 From 3fb817f1cd54bedd23e8913051473d574a0f1717 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 7 Mar 2013 03:46:52 +0000 Subject: net/mlx4_core: Disable mlx4_QP_ATTACH calls from guests if the host uses flow steering Guests kernels may not correctly detect if DMFS (device-enabled flow steering) is activated by the host. If DMFS is activated, the master should return error to guests which try to use the B0-steering flow calls (mlx4_QP_ATTACH). Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 083fb48..2995687 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -2990,6 +2990,9 @@ int mlx4_QP_ATTACH_wrapper(struct mlx4_dev *dev, int slave, u8 steer_type_mask = 2; enum mlx4_steer_type type = (gid[7] & steer_type_mask) >> 1; + if (dev->caps.steering_mode != MLX4_STEERING_MODE_B0) + return -EINVAL; + qpn = vhcr->in_modifier & 0xffffff; err = get_res(dev, slave, qpn, RES_QP, &rqp); if (err) -- cgit v1.1 From 0081c8f3814a8344ca975c085d987ec6c90499ae Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 7 Mar 2013 03:46:53 +0000 Subject: net/mlx4_core: Turn off device-managed FS bit in dev-cap wrapper if DMFS is not enabled Older kernels detect DMFS (device-managed flow steering) from the HCA device capability directly, regardless of whether the capability was enabled in INIT_HCA, this is fixed by commit 7b8157bed "mlx4_core: Adjustments to Flow Steering activation logic for SR-IOV" To protect against guests running kernels without this fix, the host driver should turn off the DMFS capability bit in mlx4_QUERY_DEV_CAP_wrapper. Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/fw.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c index 50917eb..f624557 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw.c @@ -787,6 +787,14 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave, bmme_flags &= ~MLX4_BMME_FLAG_TYPE_2_WIN; MLX4_PUT(outbox->buf, bmme_flags, QUERY_DEV_CAP_BMME_FLAGS_OFFSET); + /* turn off device-managed steering capability if not enabled */ + if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) { + MLX4_GET(field, outbox->buf, + QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET); + field &= 0x7f; + MLX4_PUT(outbox->buf, field, + QUERY_DEV_CAP_FLOW_STEERING_RANGE_EN_OFFSET); + } return 0; } -- cgit v1.1 From e7dbeba85600aa2c8daf99f8f53d9ad27e88b810 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Thu, 7 Mar 2013 03:46:54 +0000 Subject: net/mlx4_core: Fix endianness bug in set_param_l The set_param_l function assumes casting a u64 pointer to a u32 pointer allows to access the lower 32bits, but it results in writing the upper 32 bits on big endian systems. The fixed function reads the upper 32 bits of the 64 argument, and or's them with the 32 bits of the 32-bit value passed to the function. Since this is now a "read-modify-write" operation, we got many "unintialized variable" warnings which needed to be fixed as well. Reported-by: Alexander Schmidt . Signed-off-by: Jack Morgenstein Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/cq.c | 2 +- drivers/net/ethernet/mellanox/mlx4/main.c | 2 +- drivers/net/ethernet/mellanox/mlx4/mlx4.h | 2 +- drivers/net/ethernet/mellanox/mlx4/mr.c | 10 +++++----- drivers/net/ethernet/mellanox/mlx4/pd.c | 2 +- drivers/net/ethernet/mellanox/mlx4/port.c | 8 ++++---- drivers/net/ethernet/mellanox/mlx4/qp.c | 8 ++++---- drivers/net/ethernet/mellanox/mlx4/srq.c | 2 +- 8 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/cq.c b/drivers/net/ethernet/mellanox/mlx4/cq.c index 7e64033..0706623 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cq.c +++ b/drivers/net/ethernet/mellanox/mlx4/cq.c @@ -226,7 +226,7 @@ void __mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn) static void mlx4_cq_free_icm(struct mlx4_dev *dev, int cqn) { - u64 in_param; + u64 in_param = 0; int err; if (mlx4_is_mfunc(dev)) { diff --git a/drivers/net/ethernet/mellanox/mlx4/main.c b/drivers/net/ethernet/mellanox/mlx4/main.c index d180bc4..16abde2 100644 --- a/drivers/net/ethernet/mellanox/mlx4/main.c +++ b/drivers/net/ethernet/mellanox/mlx4/main.c @@ -1555,7 +1555,7 @@ void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx) void mlx4_counter_free(struct mlx4_dev *dev, u32 idx) { - u64 in_param; + u64 in_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&in_param, idx); diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4.h b/drivers/net/ethernet/mellanox/mlx4/mlx4.h index cf88334..d738454 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4.h @@ -1235,7 +1235,7 @@ int mlx4_get_qp_per_mgm(struct mlx4_dev *dev); static inline void set_param_l(u64 *arg, u32 val) { - *((u32 *)arg) = val; + *arg = (*arg & 0xffffffff00000000ULL) | (u64) val; } static inline void set_param_h(u64 *arg, u32 val) diff --git a/drivers/net/ethernet/mellanox/mlx4/mr.c b/drivers/net/ethernet/mellanox/mlx4/mr.c index 602ca9b..f91719a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mr.c +++ b/drivers/net/ethernet/mellanox/mlx4/mr.c @@ -183,7 +183,7 @@ u32 __mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) static u32 mlx4_alloc_mtt_range(struct mlx4_dev *dev, int order) { - u64 in_param; + u64 in_param = 0; u64 out_param; int err; @@ -240,7 +240,7 @@ void __mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) static void mlx4_free_mtt_range(struct mlx4_dev *dev, u32 offset, int order) { - u64 in_param; + u64 in_param = 0; int err; if (mlx4_is_mfunc(dev)) { @@ -351,7 +351,7 @@ void __mlx4_mpt_release(struct mlx4_dev *dev, u32 index) static void mlx4_mpt_release(struct mlx4_dev *dev, u32 index) { - u64 in_param; + u64 in_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&in_param, index); @@ -374,7 +374,7 @@ int __mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) static int mlx4_mpt_alloc_icm(struct mlx4_dev *dev, u32 index) { - u64 param; + u64 param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(¶m, index); @@ -395,7 +395,7 @@ void __mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) static void mlx4_mpt_free_icm(struct mlx4_dev *dev, u32 index) { - u64 in_param; + u64 in_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&in_param, index); diff --git a/drivers/net/ethernet/mellanox/mlx4/pd.c b/drivers/net/ethernet/mellanox/mlx4/pd.c index 1ac8863..00f223a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/pd.c +++ b/drivers/net/ethernet/mellanox/mlx4/pd.c @@ -101,7 +101,7 @@ void __mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn) void mlx4_xrcd_free(struct mlx4_dev *dev, u32 xrcdn) { - u64 in_param; + u64 in_param = 0; int err; if (mlx4_is_mfunc(dev)) { diff --git a/drivers/net/ethernet/mellanox/mlx4/port.c b/drivers/net/ethernet/mellanox/mlx4/port.c index 719ead1..10c57c8 100644 --- a/drivers/net/ethernet/mellanox/mlx4/port.c +++ b/drivers/net/ethernet/mellanox/mlx4/port.c @@ -175,7 +175,7 @@ EXPORT_SYMBOL_GPL(__mlx4_register_mac); int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac) { - u64 out_param; + u64 out_param = 0; int err; if (mlx4_is_mfunc(dev)) { @@ -222,7 +222,7 @@ EXPORT_SYMBOL_GPL(__mlx4_unregister_mac); void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, u64 mac) { - u64 out_param; + u64 out_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&out_param, port); @@ -361,7 +361,7 @@ out: int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index) { - u64 out_param; + u64 out_param = 0; int err; if (mlx4_is_mfunc(dev)) { @@ -406,7 +406,7 @@ out: void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index) { - u64 in_param; + u64 in_param = 0; int err; if (mlx4_is_mfunc(dev)) { diff --git a/drivers/net/ethernet/mellanox/mlx4/qp.c b/drivers/net/ethernet/mellanox/mlx4/qp.c index 81e2abe..e891b05 100644 --- a/drivers/net/ethernet/mellanox/mlx4/qp.c +++ b/drivers/net/ethernet/mellanox/mlx4/qp.c @@ -222,7 +222,7 @@ int __mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base) { - u64 in_param; + u64 in_param = 0; u64 out_param; int err; @@ -255,7 +255,7 @@ void __mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt) { - u64 in_param; + u64 in_param = 0; int err; if (mlx4_is_mfunc(dev)) { @@ -319,7 +319,7 @@ err_out: static int mlx4_qp_alloc_icm(struct mlx4_dev *dev, int qpn) { - u64 param; + u64 param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(¶m, qpn); @@ -344,7 +344,7 @@ void __mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) static void mlx4_qp_free_icm(struct mlx4_dev *dev, int qpn) { - u64 in_param; + u64 in_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&in_param, qpn); diff --git a/drivers/net/ethernet/mellanox/mlx4/srq.c b/drivers/net/ethernet/mellanox/mlx4/srq.c index feda6c0..e329fe1 100644 --- a/drivers/net/ethernet/mellanox/mlx4/srq.c +++ b/drivers/net/ethernet/mellanox/mlx4/srq.c @@ -149,7 +149,7 @@ void __mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) static void mlx4_srq_free_icm(struct mlx4_dev *dev, int srqn) { - u64 in_param; + u64 in_param = 0; if (mlx4_is_mfunc(dev)) { set_param_l(&in_param, srqn); -- cgit v1.1 From bfa8ab47415a87c6c93a9e54e16f2f8cc6de79af Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Thu, 7 Mar 2013 03:46:55 +0000 Subject: net/mlx4_en: Fix race when setting the device MAC address Remove unnecessary use of workqueue for the device MAC address setting flow, and fix a race when setting MAC address which was introduced by commit c07cb4b0a "net/mlx4_en: Manage hash of MAC addresses per port" The race happened when mlx4_en_replace_mac was being executed in parallel with a successive call to ndo_set_mac_address, e.g witn an A/B/A MAC setting configuration test, the third set fails. With this change we also properly report an error if set MAC fails. Signed-off-by: Yan Burman Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 42 +++++++++++++------------- drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 1 - 2 files changed, 21 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index bb4d8d9..217e618 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -650,28 +650,10 @@ u64 mlx4_en_mac_to_u64(u8 *addr) return mac; } -static int mlx4_en_set_mac(struct net_device *dev, void *addr) +static int mlx4_en_do_set_mac(struct mlx4_en_priv *priv) { - struct mlx4_en_priv *priv = netdev_priv(dev); - struct mlx4_en_dev *mdev = priv->mdev; - struct sockaddr *saddr = addr; - - if (!is_valid_ether_addr(saddr->sa_data)) - return -EADDRNOTAVAIL; - - memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); - queue_work(mdev->workqueue, &priv->mac_task); - return 0; -} - -static void mlx4_en_do_set_mac(struct work_struct *work) -{ - struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv, - mac_task); - struct mlx4_en_dev *mdev = priv->mdev; int err = 0; - mutex_lock(&mdev->state_lock); if (priv->port_up) { /* Remove old MAC and insert the new one */ err = mlx4_en_replace_mac(priv, priv->base_qpn, @@ -683,7 +665,26 @@ static void mlx4_en_do_set_mac(struct work_struct *work) } else en_dbg(HW, priv, "Port is down while registering mac, exiting...\n"); + return err; +} + +static int mlx4_en_set_mac(struct net_device *dev, void *addr) +{ + struct mlx4_en_priv *priv = netdev_priv(dev); + struct mlx4_en_dev *mdev = priv->mdev; + struct sockaddr *saddr = addr; + int err; + + if (!is_valid_ether_addr(saddr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN); + + mutex_lock(&mdev->state_lock); + err = mlx4_en_do_set_mac(priv); mutex_unlock(&mdev->state_lock); + + return err; } static void mlx4_en_clear_list(struct net_device *dev) @@ -1348,7 +1349,7 @@ static void mlx4_en_do_get_stats(struct work_struct *work) queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY); } if (mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port]) { - queue_work(mdev->workqueue, &priv->mac_task); + mlx4_en_do_set_mac(priv); mdev->mac_removed[MLX4_MAX_PORTS + 1 - priv->port] = 0; } mutex_unlock(&mdev->state_lock); @@ -2078,7 +2079,6 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port, priv->msg_enable = MLX4_EN_MSG_LEVEL; spin_lock_init(&priv->stats_lock); INIT_WORK(&priv->rx_mode_task, mlx4_en_do_set_rx_mode); - INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac); INIT_WORK(&priv->watchdog_task, mlx4_en_restart); INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate); INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats); diff --git a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h index c313d7e..f710b7c 100644 --- a/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h +++ b/drivers/net/ethernet/mellanox/mlx4/mlx4_en.h @@ -509,7 +509,6 @@ struct mlx4_en_priv { struct mlx4_en_cq rx_cq[MAX_RX_RINGS]; struct mlx4_qp drop_qp; struct work_struct rx_mode_task; - struct work_struct mac_task; struct work_struct watchdog_task; struct work_struct linkstate_task; struct delayed_work stats_task; -- cgit v1.1 From 83a5a6cef40616d19a388f560447e99c2ca04d1e Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Thu, 7 Mar 2013 03:46:56 +0000 Subject: net/mlx4_en: Cleanup MAC resources on module unload or port stop Make sure we cleanup all MAC related resources (entries in the port MAC table and steering rules) when stopping a port or when the driver is unloaded. The leak was introduced by commit 07cb4b0a "net/mlx4_en: Manage hash of MAC addresses per port". Signed-off-by: Yan Burman Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 36 ++++++++++++++------------ 1 file changed, 20 insertions(+), 16 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 217e618..7fd0936 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -565,34 +565,38 @@ static void mlx4_en_put_qp(struct mlx4_en_priv *priv) struct mlx4_en_dev *mdev = priv->mdev; struct mlx4_dev *dev = mdev->dev; int qpn = priv->base_qpn; - u64 mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); - - en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", - priv->dev->dev_addr); - mlx4_unregister_mac(dev, priv->port, mac); + u64 mac; - if (dev->caps.steering_mode != MLX4_STEERING_MODE_A0) { + if (dev->caps.steering_mode == MLX4_STEERING_MODE_A0) { + mac = mlx4_en_mac_to_u64(priv->dev->dev_addr); + en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", + priv->dev->dev_addr); + mlx4_unregister_mac(dev, priv->port, mac); + } else { struct mlx4_mac_entry *entry; struct hlist_node *tmp; struct hlist_head *bucket; - unsigned int mac_hash; + unsigned int i; - mac_hash = priv->dev->dev_addr[MLX4_EN_MAC_HASH_IDX]; - bucket = &priv->mac_hash[mac_hash]; - hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { - if (ether_addr_equal_64bits(entry->mac, - priv->dev->dev_addr)) { - en_dbg(DRV, priv, "Releasing qp: port %d, MAC %pM, qpn %d\n", - priv->port, priv->dev->dev_addr, qpn); + for (i = 0; i < MLX4_EN_MAC_HASH_SIZE; ++i) { + bucket = &priv->mac_hash[i]; + hlist_for_each_entry_safe(entry, tmp, bucket, hlist) { + mac = mlx4_en_mac_to_u64(entry->mac); + en_dbg(DRV, priv, "Registering MAC: %pM for deleting\n", + entry->mac); mlx4_en_uc_steer_release(priv, entry->mac, qpn, entry->reg_id); - mlx4_qp_release_range(dev, qpn, 1); + mlx4_unregister_mac(dev, priv->port, mac); hlist_del_rcu(&entry->hlist); kfree_rcu(entry, rcu); - break; } } + + en_dbg(DRV, priv, "Releasing qp: port %d, qpn %d\n", + priv->port, qpn); + mlx4_qp_release_range(dev, qpn, 1); + priv->flags &= ~MLX4_EN_FLAG_FORCE_PROMISC; } } -- cgit v1.1 From a229e488ac3f904d06c20d8d3f47831db3c7a15a Mon Sep 17 00:00:00 2001 From: Amir Vadai Date: Thu, 7 Mar 2013 03:46:57 +0000 Subject: net/mlx4_en: Disable RFS when running in SRIOV mode Commit 37706996 "mlx4_en: fix allocation of CPU affinity reverse-map" fixed a bug when mlx4_dev->caps.comp_pool is larger from the device rx rings, but introduced a regression. When the mlx4_core is activating its "legacy mode" (e.g when running in SRIOV mode) w.r.t to EQs/IRQs usage, comp_pool becomes zero and we're crashing on divide by zero alloc_cpu_rmap. Fix that by enabling RFS only when running in non-legacy mode. Reported-by: Yan Burman Cc: Kleber Sacilotto de Souza Signed-off-by: Amir Vadai Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 7fd0936..995d4b6 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -1833,9 +1833,11 @@ int mlx4_en_alloc_resources(struct mlx4_en_priv *priv) } #ifdef CONFIG_RFS_ACCEL - priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); - if (!priv->dev->rx_cpu_rmap) - goto err; + if (priv->mdev->dev->caps.comp_pool) { + priv->dev->rx_cpu_rmap = alloc_irq_cpu_rmap(priv->mdev->dev->caps.comp_pool); + if (!priv->dev->rx_cpu_rmap) + goto err; + } #endif return 0; -- cgit v1.1 From e4fabf2b6e6d75752d5eede57f23ff8e9c6aa09b Mon Sep 17 00:00:00 2001 From: Bhavesh Davda Date: Wed, 6 Mar 2013 12:04:53 +0000 Subject: vmxnet3: prevent div-by-zero panic when ring resizing uninitialized dev Linux is free to call ethtool ops as soon as a netdev exists when probe finishes. However, we only allocate vmxnet3 tx/rx queues and initialize the rx_buf_per_pkt field in struct vmxnet3_adapter when the interface is opened (UP). Signed-off-by: Bhavesh Davda Signed-off-by: Shreyas N Bhatewara Signed-off-by: David S. Miller --- drivers/net/vmxnet3/vmxnet3_drv.c | 1 + drivers/net/vmxnet3/vmxnet3_ethtool.c | 6 ++++++ drivers/net/vmxnet3/vmxnet3_int.h | 4 ++-- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index 4aad350..eae7a03 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -2958,6 +2958,7 @@ vmxnet3_probe_device(struct pci_dev *pdev, adapter->num_rx_queues = num_rx_queues; adapter->num_tx_queues = num_tx_queues; + adapter->rx_buf_per_pkt = 1; size = sizeof(struct Vmxnet3_TxQueueDesc) * adapter->num_tx_queues; size += sizeof(struct Vmxnet3_RxQueueDesc) * adapter->num_rx_queues; diff --git a/drivers/net/vmxnet3/vmxnet3_ethtool.c b/drivers/net/vmxnet3/vmxnet3_ethtool.c index a0feb17..63a1243 100644 --- a/drivers/net/vmxnet3/vmxnet3_ethtool.c +++ b/drivers/net/vmxnet3/vmxnet3_ethtool.c @@ -472,6 +472,12 @@ vmxnet3_set_ringparam(struct net_device *netdev, VMXNET3_RX_RING_MAX_SIZE) return -EINVAL; + /* if adapter not yet initialized, do nothing */ + if (adapter->rx_buf_per_pkt == 0) { + netdev_err(netdev, "adapter not completely initialized, " + "ring size cannot be changed yet\n"); + return -EOPNOTSUPP; + } /* round it up to a multiple of VMXNET3_RING_SIZE_ALIGN */ new_tx_ring_size = (param->tx_pending + VMXNET3_RING_SIZE_MASK) & diff --git a/drivers/net/vmxnet3/vmxnet3_int.h b/drivers/net/vmxnet3/vmxnet3_int.h index 3198384..3541814 100644 --- a/drivers/net/vmxnet3/vmxnet3_int.h +++ b/drivers/net/vmxnet3/vmxnet3_int.h @@ -70,10 +70,10 @@ /* * Version numbers */ -#define VMXNET3_DRIVER_VERSION_STRING "1.1.29.0-k" +#define VMXNET3_DRIVER_VERSION_STRING "1.1.30.0-k" /* a 32-bit int, each byte encode a verion number in VMXNET3_DRIVER_VERSION */ -#define VMXNET3_DRIVER_VERSION_NUM 0x01011D00 +#define VMXNET3_DRIVER_VERSION_NUM 0x01011E00 #if defined(CONFIG_PCI_MSI) /* RSS only makes sense if MSI-X is supported. */ -- cgit v1.1 From 9cb6cb7ed11cd3b69c47bb414983603a6ff20b1d Mon Sep 17 00:00:00 2001 From: Zang MingJie Date: Wed, 6 Mar 2013 04:37:37 +0000 Subject: vxlan: fix oops when delete netns containing vxlan The following script will produce a kernel oops: sudo ip netns add v sudo ip netns exec v ip ad add 127.0.0.1/8 dev lo sudo ip netns exec v ip link set lo up sudo ip netns exec v ip ro add 224.0.0.0/4 dev lo sudo ip netns exec v ip li add vxlan0 type vxlan id 42 group 239.1.1.1 dev lo sudo ip netns exec v ip link set vxlan0 up sudo ip netns del v where inspect by gdb: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 107] 0xffffffffa0289e33 in ?? () (gdb) bt #0 vxlan_leave_group (dev=0xffff88001bafa000) at drivers/net/vxlan.c:533 #1 vxlan_stop (dev=0xffff88001bafa000) at drivers/net/vxlan.c:1087 #2 0xffffffff812cc498 in __dev_close_many (head=head@entry=0xffff88001f2e7dc8) at net/core/dev.c:1299 #3 0xffffffff812cd920 in dev_close_many (head=head@entry=0xffff88001f2e7dc8) at net/core/dev.c:1335 #4 0xffffffff812cef31 in rollback_registered_many (head=head@entry=0xffff88001f2e7dc8) at net/core/dev.c:4851 #5 0xffffffff812cf040 in unregister_netdevice_many (head=head@entry=0xffff88001f2e7dc8) at net/core/dev.c:5752 #6 0xffffffff812cf1ba in default_device_exit_batch (net_list=0xffff88001f2e7e18) at net/core/dev.c:6170 #7 0xffffffff812cab27 in cleanup_net (work=) at net/core/net_namespace.c:302 #8 0xffffffff810540ef in process_one_work (worker=0xffff88001ba9ed40, work=0xffffffff8167d020) at kernel/workqueue.c:2157 #9 0xffffffff810549d0 in worker_thread (__worker=__worker@entry=0xffff88001ba9ed40) at kernel/workqueue.c:2276 #10 0xffffffff8105870c in kthread (_create=0xffff88001f2e5d68) at kernel/kthread.c:168 #11 #12 0x0000000000000000 in ?? () #13 0x0000000000000000 in ?? () (gdb) fr 0 #0 vxlan_leave_group (dev=0xffff88001bafa000) at drivers/net/vxlan.c:533 533 struct sock *sk = vn->sock->sk; (gdb) l 528 static int vxlan_leave_group(struct net_device *dev) 529 { 530 struct vxlan_dev *vxlan = netdev_priv(dev); 531 struct vxlan_net *vn = net_generic(dev_net(dev), vxlan_net_id); 532 int err = 0; 533 struct sock *sk = vn->sock->sk; 534 struct ip_mreqn mreq = { 535 .imr_multiaddr.s_addr = vxlan->gaddr, 536 .imr_ifindex = vxlan->link, 537 }; (gdb) p vn->sock $4 = (struct socket *) 0x0 The kernel calls `vxlan_exit_net` when deleting the netns before shutting down vxlan interfaces. Later the removal of all vxlan interfaces, where `vn->sock` is already gone causes the oops. so we should manually shutdown all interfaces before deleting `vn->sock` as the patch does. Signed-off-by: Zang MingJie Signed-off-by: David S. Miller --- drivers/net/vxlan.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index c3e3d29..7cee7a3 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -1506,6 +1506,14 @@ static __net_init int vxlan_init_net(struct net *net) static __net_exit void vxlan_exit_net(struct net *net) { struct vxlan_net *vn = net_generic(net, vxlan_net_id); + struct vxlan_dev *vxlan; + unsigned h; + + rtnl_lock(); + for (h = 0; h < VNI_HASH_SIZE; ++h) + hlist_for_each_entry(vxlan, &vn->vni_list[h], hlist) + dev_close(vxlan->dev); + rtnl_unlock(); if (vn->sock) { sk_release_kernel(vn->sock->sk); -- cgit v1.1 From 80028ea1c0afc24d4ddeb8dd2a9992fff03616ca Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Wed, 6 Mar 2013 07:10:32 +0000 Subject: bonding: fire NETDEV_RELEASE event only on 0 slaves Currently, if we set up netconsole over bonding and release a slave, netconsole will stop logging on the whole bonding device. Change the behavior to stop the netconsole only when the last slave is released. Signed-off-by: Veaceslav Falico Acked-by: Neil Horman Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 7bd068a..8b4e96e 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1964,7 +1964,6 @@ static int __bond_release_one(struct net_device *bond_dev, } block_netpoll_tx(); - call_netdevice_notifiers(NETDEV_RELEASE, bond_dev); write_lock_bh(&bond->lock); slave = bond_get_slave_by_dev(bond, slave_dev); @@ -2066,8 +2065,10 @@ static int __bond_release_one(struct net_device *bond_dev, write_unlock_bh(&bond->lock); unblock_netpoll_tx(); - if (bond->slave_cnt == 0) + if (bond->slave_cnt == 0) { call_netdevice_notifiers(NETDEV_CHANGEADDR, bond->dev); + call_netdevice_notifiers(NETDEV_RELEASE, bond->dev); + } bond_compute_features(bond); if (!(bond_dev->features & NETIF_F_VLAN_CHALLENGED) && -- cgit v1.1 From 260055bb1f1f8b5328601816c50fd7e0dfda7dff Mon Sep 17 00:00:00 2001 From: Phil Sutter Date: Wed, 6 Mar 2013 07:49:02 +0000 Subject: mv643xx_eth: fix for disabled autoneg When autoneg has been disabled in the PHY (Marvell 88E1118 here), auto negotiation between MAC and PHY seem non-functional anymore. The only way I found to workaround this is to manually configure the MAC with the settings sent to the PHY earlier. Signed-off-by: Phil Sutter Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mv643xx_eth.c | 55 +++++++++++++++++++++++++++--- 1 file changed, 51 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c index 2914050..6562c73 100644 --- a/drivers/net/ethernet/marvell/mv643xx_eth.c +++ b/drivers/net/ethernet/marvell/mv643xx_eth.c @@ -1081,6 +1081,45 @@ static void txq_set_fixed_prio_mode(struct tx_queue *txq) /* mii management interface *************************************************/ +static void mv643xx_adjust_pscr(struct mv643xx_eth_private *mp) +{ + u32 pscr = rdlp(mp, PORT_SERIAL_CONTROL); + u32 autoneg_disable = FORCE_LINK_PASS | + DISABLE_AUTO_NEG_SPEED_GMII | + DISABLE_AUTO_NEG_FOR_FLOW_CTRL | + DISABLE_AUTO_NEG_FOR_DUPLEX; + + if (mp->phy->autoneg == AUTONEG_ENABLE) { + /* enable auto negotiation */ + pscr &= ~autoneg_disable; + goto out_write; + } + + pscr |= autoneg_disable; + + if (mp->phy->speed == SPEED_1000) { + /* force gigabit, half duplex not supported */ + pscr |= SET_GMII_SPEED_TO_1000; + pscr |= SET_FULL_DUPLEX_MODE; + goto out_write; + } + + pscr &= ~SET_GMII_SPEED_TO_1000; + + if (mp->phy->speed == SPEED_100) + pscr |= SET_MII_SPEED_TO_100; + else + pscr &= ~SET_MII_SPEED_TO_100; + + if (mp->phy->duplex == DUPLEX_FULL) + pscr |= SET_FULL_DUPLEX_MODE; + else + pscr &= ~SET_FULL_DUPLEX_MODE; + +out_write: + wrlp(mp, PORT_SERIAL_CONTROL, pscr); +} + static irqreturn_t mv643xx_eth_err_irq(int irq, void *dev_id) { struct mv643xx_eth_shared_private *msp = dev_id; @@ -1499,6 +1538,7 @@ static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { struct mv643xx_eth_private *mp = netdev_priv(dev); + int ret; if (mp->phy == NULL) return -EINVAL; @@ -1508,7 +1548,10 @@ mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) */ cmd->advertising &= ~ADVERTISED_1000baseT_Half; - return phy_ethtool_sset(mp->phy, cmd); + ret = phy_ethtool_sset(mp->phy, cmd); + if (!ret) + mv643xx_adjust_pscr(mp); + return ret; } static void mv643xx_eth_get_drvinfo(struct net_device *dev, @@ -2442,11 +2485,15 @@ static int mv643xx_eth_stop(struct net_device *dev) static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) { struct mv643xx_eth_private *mp = netdev_priv(dev); + int ret; - if (mp->phy != NULL) - return phy_mii_ioctl(mp->phy, ifr, cmd); + if (mp->phy == NULL) + return -ENOTSUPP; - return -EOPNOTSUPP; + ret = phy_mii_ioctl(mp->phy, ifr, cmd); + if (!ret) + mv643xx_adjust_pscr(mp); + return ret; } static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu) -- cgit v1.1 From 0c1233aba1e948c37f6dc7620cb7c253fcd71ce9 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Wed, 6 Mar 2013 11:45:24 +0000 Subject: netlabel: correctly list all the static label mappings When we have a large number of static label mappings that spill across the netlink message boundary we fail to properly save our state in the netlink_callback struct which causes us to repeat the same listings. This patch fixes this problem by saving the state correctly between calls to the NetLabel static label netlink "dumpit" routines. Signed-off-by: Paul Moore Signed-off-by: David S. Miller --- net/netlabel/netlabel_unlabeled.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c index 847d495..85742b7 100644 --- a/net/netlabel/netlabel_unlabeled.c +++ b/net/netlabel/netlabel_unlabeled.c @@ -1250,10 +1250,10 @@ static int netlbl_unlabel_staticlist(struct sk_buff *skb, unlabel_staticlist_return: rcu_read_unlock(); - cb->args[0] = skip_bkt; - cb->args[1] = skip_chain; - cb->args[2] = skip_addr4; - cb->args[3] = skip_addr6; + cb->args[0] = iter_bkt; + cb->args[1] = iter_chain; + cb->args[2] = iter_addr4; + cb->args[3] = iter_addr6; return skb->len; } @@ -1320,8 +1320,8 @@ static int netlbl_unlabel_staticlistdef(struct sk_buff *skb, unlabel_staticlistdef_return: rcu_read_unlock(); - cb->args[0] = skip_addr4; - cb->args[1] = skip_addr6; + cb->args[0] = iter_addr4; + cb->args[1] = iter_addr6; return skb->len; } -- cgit v1.1 From 195ca382ca253431cc02c82bca61126c8a7ae155 Mon Sep 17 00:00:00 2001 From: Sony Chacko Date: Wed, 6 Mar 2013 13:03:25 +0000 Subject: MAINTAINERS: Update qlcnic maintainers list Signed-off-by: Sony Chacko Signed-off-by: David S. Miller --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 9561658..c08411b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6412,6 +6412,8 @@ F: Documentation/networking/LICENSE.qla3xxx F: drivers/net/ethernet/qlogic/qla3xxx.* QLOGIC QLCNIC (1/10)Gb ETHERNET DRIVER +M: Rajesh Borundia +M: Shahed Shaikh M: Jitendra Kalsaria M: Sony Chacko M: linux-driver@qlogic.com -- cgit v1.1 From 60f583d56aa515b896a9d94f860f52640c1e8a75 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Thu, 7 Mar 2013 08:31:51 -0800 Subject: x86: Do not try to sync identity map for non-mapped pages kernel_map_sync_memtype() is called from a variety of contexts. The pat.c code that calls it seems to ensure that it is not called for non-ram areas by checking via pat_pagerange_is_ram(). It is important that it only be called on the actual identity map because there *IS* no map to sync for highmem pages, or for memory holes. The ioremap.c uses are not as careful as those from pat.c, and call kernel_map_sync_memtype() on PCI space which is in the middle of the kernel identity map _range_, but is not actually mapped. This patch adds a check to kernel_map_sync_memtype() which probably duplicates some of the checks already in pat.c. But, it is necessary for the ioremap.c uses and shouldn't hurt other callers. I have reproduced this bug and this patch fixes it for me and the original bug reporter: https://lkml.org/lkml/2013/2/5/396 Signed-off-by: Dave Hansen Link: http://lkml.kernel.org/r/20130307163151.D9B58C4E@kernel.stglabs.ibm.com Signed-off-by: Dave Hansen Tested-by: Tetsuo Handa Signed-off-by: H. Peter Anvin --- arch/x86/mm/pat.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 2610bd9..6574388 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -563,6 +563,13 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags) if (base > __pa(high_memory-1)) return 0; + /* + * some areas in the middle of the kernel identity range + * are not mapped, like the PCI space. + */ + if (!page_is_ram(base >> PAGE_SHIFT)) + return 0; + id_sz = (__pa(high_memory-1) <= base + size) ? __pa(high_memory) - base : size; -- cgit v1.1 From d0d79c3fd77abe39654c2e594149f1f9ef1eeb05 Mon Sep 17 00:00:00 2001 From: Junwei Zhang Date: Wed, 6 Mar 2013 20:48:47 +0000 Subject: afkey: fix a typo Signed-off-by: Martin Zhang Signed-off-by: David S. Miller --- net/key/af_key.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/net/key/af_key.c b/net/key/af_key.c index 556fdaf..8555f33 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -2201,7 +2201,7 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, const struct sadb_ XFRM_POLICY_BLOCK : XFRM_POLICY_ALLOW); xp->priority = pol->sadb_x_policy_priority; - sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1], + sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1]; xp->family = pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.saddr); if (!xp->family) { err = -EINVAL; @@ -2214,7 +2214,7 @@ static int pfkey_spdadd(struct sock *sk, struct sk_buff *skb, const struct sadb_ if (xp->selector.sport) xp->selector.sport_mask = htons(0xffff); - sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1], + sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1]; pfkey_sadb_addr2xfrm_addr(sa, &xp->selector.daddr); xp->selector.prefixlen_d = sa->sadb_address_prefixlen; @@ -2315,7 +2315,7 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, const struct sa memset(&sel, 0, sizeof(sel)); - sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1], + sa = ext_hdrs[SADB_EXT_ADDRESS_SRC-1]; sel.family = pfkey_sadb_addr2xfrm_addr(sa, &sel.saddr); sel.prefixlen_s = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); @@ -2323,7 +2323,7 @@ static int pfkey_spddelete(struct sock *sk, struct sk_buff *skb, const struct sa if (sel.sport) sel.sport_mask = htons(0xffff); - sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1], + sa = ext_hdrs[SADB_EXT_ADDRESS_DST-1]; pfkey_sadb_addr2xfrm_addr(sa, &sel.daddr); sel.prefixlen_d = sa->sadb_address_prefixlen; sel.proto = pfkey_proto_to_xfrm(sa->sadb_address_proto); -- cgit v1.1 From c10cb5fc0fc9fa605e01f715118bde5ba5a98616 Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Thu, 7 Mar 2013 02:34:33 +0000 Subject: Fix: sparse warning in inet_csk_prepare_forced_close In e337e24d66 (inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock) I introduced the function inet_csk_prepare_forced_close, which does a call to bh_unlock_sock(). This produces a sparse-warning. This patch adds the missing __releases. Signed-off-by: Christoph Paasch Signed-off-by: David S. Miller --- net/ipv4/inet_connection_sock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c index 7d1874b..786d97a 100644 --- a/net/ipv4/inet_connection_sock.c +++ b/net/ipv4/inet_connection_sock.c @@ -735,6 +735,7 @@ EXPORT_SYMBOL(inet_csk_destroy_sock); * tcp/dccp_create_openreq_child(). */ void inet_csk_prepare_forced_close(struct sock *sk) + __releases(&sk->sk_lock.slock) { /* sk_clone_lock locked the socket and set refcnt to 2 */ bh_unlock_sock(sk); -- cgit v1.1 From fbca58a2242ef2b84049365786d501ee512aefcf Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Thu, 7 Mar 2013 03:05:33 +0000 Subject: bridge: add missing vid to br_mdb_get() Obviously, vid should be considered when searching for multicast group. Cc: Vlad Yasevich Cc: Stephen Hemminger Cc: "David S. Miller" Signed-off-by: Cong Wang Acked-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/bridge/br_device.c | 2 +- net/bridge/br_input.c | 2 +- net/bridge/br_multicast.c | 3 ++- net/bridge/br_private.h | 4 ++-- 4 files changed, 6 insertions(+), 5 deletions(-) diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index d5f1d3f..314c73e 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -66,7 +66,7 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev) goto out; } - mdst = br_mdb_get(br, skb); + mdst = br_mdb_get(br, skb, vid); if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) br_multicast_deliver(mdst, skb); else diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 4803301..828e2bc 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -97,7 +97,7 @@ int br_handle_frame_finish(struct sk_buff *skb) if (is_broadcast_ether_addr(dest)) skb2 = skb; else if (is_multicast_ether_addr(dest)) { - mdst = br_mdb_get(br, skb); + mdst = br_mdb_get(br, skb, vid); if (mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) { if ((mdst && mdst->mglist) || br_multicast_is_router(br)) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 10e6fce..923fbea 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -132,7 +132,7 @@ static struct net_bridge_mdb_entry *br_mdb_ip6_get( #endif struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, - struct sk_buff *skb) + struct sk_buff *skb, u16 vid) { struct net_bridge_mdb_htable *mdb = rcu_dereference(br->mdb); struct br_ip ip; @@ -144,6 +144,7 @@ struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, return NULL; ip.proto = skb->protocol; + ip.vid = vid; switch (skb->protocol) { case htons(ETH_P_IP): diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 6d314c4..3cbf5be 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -442,7 +442,7 @@ extern int br_multicast_rcv(struct net_bridge *br, struct net_bridge_port *port, struct sk_buff *skb); extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, - struct sk_buff *skb); + struct sk_buff *skb, u16 vid); extern void br_multicast_add_port(struct net_bridge_port *port); extern void br_multicast_del_port(struct net_bridge_port *port); extern void br_multicast_enable_port(struct net_bridge_port *port); @@ -504,7 +504,7 @@ static inline int br_multicast_rcv(struct net_bridge *br, } static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, - struct sk_buff *skb) + struct sk_buff *skb, u16 vid) { return NULL; } -- cgit v1.1 From ba81276b1a5e3cf0674cb0e6d9525e5ae0c98695 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 7 Mar 2013 07:59:25 +0000 Subject: team: unsyc the devices addresses when port is removed When a team port is removed, unsync all devices addresses that may have been synched to the port devices. CC: Jiri Pirko Signed-off-by: Vlad Yasevich Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- drivers/net/team/team.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c index 05c5efe..bf34192 100644 --- a/drivers/net/team/team.c +++ b/drivers/net/team/team.c @@ -1138,6 +1138,8 @@ static int team_port_del(struct team *team, struct net_device *port_dev) netdev_upper_dev_unlink(port_dev, dev); team_port_disable_netpoll(port); vlan_vids_del_by_dev(port_dev, dev); + dev_uc_unsync(port_dev, dev); + dev_mc_unsync(port_dev, dev); dev_close(port_dev); team_port_leave(team, port); -- cgit v1.1 From 87ab7f6f2874f1115817e394a7ed2dea1c72549e Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 7 Mar 2013 10:21:48 +0000 Subject: macvlan: Set IFF_UNICAST_FLT flag to prevent unnecessary promisc mode. Macvlan already supports hw address filters. Set the IFF_UNICAST_FLT so that it doesn't needlesly enter PROMISC mode when macvlans are stacked. Signed-of-by: Vlad Yasevich Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index 417b2af..73abbc1 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -660,6 +660,7 @@ void macvlan_common_setup(struct net_device *dev) ether_setup(dev); dev->priv_flags &= ~(IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING); + dev->priv_flags |= IFF_UNICAST_FLT; dev->netdev_ops = &macvlan_netdev_ops; dev->destructor = free_netdev; dev->header_ops = &macvlan_hard_header_ops, -- cgit v1.1 From cc59487a05b1aae6987b4a5d56603ed3e603f82e Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Tue, 26 Feb 2013 10:54:22 -0500 Subject: drm/mgag200: 'fbdev_list' in 'struct mga_fbdev' is not used Signed-off-by: Christopher Harvey Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_drv.h | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/mgag200/mgag200_drv.h b/drivers/gpu/drm/mgag200/mgag200_drv.h index 5ea5033..4d932c4 100644 --- a/drivers/gpu/drm/mgag200/mgag200_drv.h +++ b/drivers/gpu/drm/mgag200/mgag200_drv.h @@ -112,7 +112,6 @@ struct mga_framebuffer { struct mga_fbdev { struct drm_fb_helper helper; struct mga_framebuffer mfb; - struct list_head fbdev_list; void *sysram; int size; struct ttm_bo_kmap_obj mapping; -- cgit v1.1 From 0ba53171583f86bbcbba951fe172982f7fc3761c Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Tue, 26 Feb 2013 10:55:44 -0500 Subject: drm/mgag200: Reject modes that are too big for VRAM A monitor or a user could request a resolution greater than the available VRAM for the backing framebuffer. This change checks the required framebuffer size against the max VRAM size and rejects modes if they are too big. This change can also remove a mode request passed in via the video= parameter. Signed-off-by: Christopher Harvey Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_mode.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index d3d99a2..a274b99 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1406,6 +1406,14 @@ static int mga_vga_get_modes(struct drm_connector *connector) static int mga_vga_mode_valid(struct drm_connector *connector, struct drm_display_mode *mode) { + struct drm_device *dev = connector->dev; + struct mga_device *mdev = (struct mga_device*)dev->dev_private; + struct mga_fbdev *mfbdev = mdev->mfbdev; + struct drm_fb_helper *fb_helper = &mfbdev->helper; + struct drm_fb_helper_connector *fb_helper_conn = NULL; + int bpp = 32; + int i = 0; + /* FIXME: Add bandwidth and g200se limitations */ if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 || @@ -1415,6 +1423,25 @@ static int mga_vga_mode_valid(struct drm_connector *connector, return MODE_BAD; } + /* Validate the mode input by the user */ + for (i = 0; i < fb_helper->connector_count; i++) { + if (fb_helper->connector_info[i]->connector == connector) { + /* Found the helper for this connector */ + fb_helper_conn = fb_helper->connector_info[i]; + if (fb_helper_conn->cmdline_mode.specified) { + if (fb_helper_conn->cmdline_mode.bpp_specified) { + bpp = fb_helper_conn->cmdline_mode.bpp; + } + } + } + } + + if ((mode->hdisplay * mode->vdisplay * (bpp/8)) > mdev->mc.vram_size) { + if (fb_helper_conn) + fb_helper_conn->cmdline_mode.specified = false; + return MODE_BAD; + } + return MODE_OK; } -- cgit v1.1 From ce495960ff33f96362cf81f0eb7c52d1a89f64be Mon Sep 17 00:00:00 2001 From: Julia Lemire Date: Thu, 7 Mar 2013 10:41:03 -0500 Subject: drm/mgag200: Bug fix: Renesas board now selects native resolution. Renesas boards were consistently defaulting to the 1024x768 resolution, regardless of the native resolution of the monitor plugged in. It was determined that the EDID of the monitor was not being read. Since the DAC is a shared line, in order to read from or write to it we must take control of the DAC clock. This can be done by setting the proper register to one. This bug fix sets the register MGA1064_GEN_IO_CTL2 to one. The DAC control line can be used to determine whether or not a new monitor has been plugged in. But since the hotplug feature is not one we will support, it has been decided to simply leave the register set to one. Signed-off-by: Julia Lemire Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_i2c.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mgag200/mgag200_i2c.c b/drivers/gpu/drm/mgag200/mgag200_i2c.c index 5a88ec5..d3dcf54 100644 --- a/drivers/gpu/drm/mgag200/mgag200_i2c.c +++ b/drivers/gpu/drm/mgag200/mgag200_i2c.c @@ -92,6 +92,7 @@ struct mga_i2c_chan *mgag200_i2c_create(struct drm_device *dev) int ret; int data, clock; + WREG_DAC(MGA1064_GEN_IO_CTL2, 1); WREG_DAC(MGA1064_GEN_IO_DATA, 0xff); WREG_DAC(MGA1064_GEN_IO_CTL, 0); -- cgit v1.1 From 13bcf01b33e6e19a7fe7ff396f9ed02803e225ec Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Thu, 7 Mar 2013 10:42:25 -0500 Subject: drm: Documentation typo fixes Signed-off-by: Christopher Harvey Signed-off-by: Dave Airlie --- include/drm/drm_crtc.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index 8839b3a..e3e0d651 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -443,12 +443,12 @@ struct drm_crtc { * @dpms: set power state (see drm_crtc_funcs above) * @save: save connector state * @restore: restore connector state - * @reset: reset connector after state has been invalidate (e.g. resume) + * @reset: reset connector after state has been invalidated (e.g. resume) * @detect: is this connector active? * @fill_modes: fill mode list for this connector - * @set_property: property for this connector may need update + * @set_property: property for this connector may need an update * @destroy: make object go away - * @force: notify the driver the connector is forced on + * @force: notify the driver that the connector is forced on * * Each CRTC may have one or more connectors attached to it. The functions * below allow the core DRM code to control connectors, enumerate available modes, -- cgit v1.1 From 36c1813bb453dd078e49bc5b3c1bf7d13535d9ff Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 5 Mar 2013 22:07:36 +0100 Subject: drm/tegra: drop "select DRM_HDMI" Commit ac24c2204a76e5b42aa103bf963ae0eda1b827f3 ("drm/tegra: Use generic HDMI infoframe helpers") added "select DRM_HDMI" to the DRM_TEGRA Kconfig entry. But there is no Kconfig symbol named DRM_HDMI. The select statement for that symbol is a nop. Drop it. What was needed to use HDMI functionality was to select HDMI (which this entry already did through depending on DRM) and to include linux/hdmi.h (which this commit also did). Signed-off-by: Paul Bolle Acked-by: Thierry Reding Signed-off-by: Dave Airlie --- drivers/gpu/drm/tegra/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/tegra/Kconfig b/drivers/gpu/drm/tegra/Kconfig index c92955d..be1daf7 100644 --- a/drivers/gpu/drm/tegra/Kconfig +++ b/drivers/gpu/drm/tegra/Kconfig @@ -4,7 +4,6 @@ config DRM_TEGRA select DRM_KMS_HELPER select DRM_GEM_CMA_HELPER select DRM_KMS_CMA_HELPER - select DRM_HDMI select FB_CFB_FILLRECT select FB_CFB_COPYAREA select FB_CFB_IMAGEBLIT -- cgit v1.1 From e84e7a56a3aa2963db506299e29a5f3f09377f9b Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Fri, 8 Mar 2013 11:30:18 +1100 Subject: virtio: rng: disallow multiple device registrations, fixes crashes The code currently only supports one virtio-rng device at a time. Invoking guests with multiple devices causes the guest to blow up. Check if we've already registered and initialised the driver. Also cleanup in case of registration errors or hot-unplug so that a new device can be used. Reported-by: Peter Krempa Reported-by: Signed-off-by: Amit Shah Signed-off-by: Rusty Russell Cc: stable@kernel.org --- drivers/char/hw_random/virtio-rng.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index 10fd71c..6bf4d47 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -92,14 +92,22 @@ static int probe_common(struct virtio_device *vdev) { int err; + if (vq) { + /* We only support one device for now */ + return -EBUSY; + } /* We expect a single virtqueue. */ vq = virtio_find_single_vq(vdev, random_recv_done, "input"); - if (IS_ERR(vq)) - return PTR_ERR(vq); + if (IS_ERR(vq)) { + err = PTR_ERR(vq); + vq = NULL; + return err; + } err = hwrng_register(&virtio_hwrng); if (err) { vdev->config->del_vqs(vdev); + vq = NULL; return err; } @@ -112,6 +120,7 @@ static void remove_common(struct virtio_device *vdev) busy = false; hwrng_unregister(&virtio_hwrng); vdev->config->del_vqs(vdev); + vq = NULL; } static int virtrng_probe(struct virtio_device *vdev) -- cgit v1.1 From 5f3347e6e75768985a088d959c49fb66263087b6 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Thu, 7 Mar 2013 13:27:33 +0000 Subject: bnx2x: Fix intermittent long KR2 link up time When a KR2 device is connected to a KR link-partner, sometimes it requires disabling KR2 for the link to come up. To get a KR2 link up later, in case no base pages are seen, the KR2 is restored. The problem was that some link partners cleared their advertised BP/NP after around two seconds, causing the driver to disable/enable KR2 link all the time. The fix was to wait at least 5 seconds before checking KR2 recovery. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 11 +++++++++++ drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h | 3 ++- 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 31c5787..00ac493 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -12527,6 +12527,7 @@ int bnx2x_phy_init(struct link_params *params, struct link_vars *vars) vars->flow_ctrl = BNX2X_FLOW_CTRL_NONE; vars->mac_type = MAC_TYPE_NONE; vars->phy_flags = 0; + vars->check_kr2_recovery_cnt = 0; /* Driver opens NIG-BRB filters */ bnx2x_set_rx_filter(params, 1); /* Check if link flap can be avoided */ @@ -13411,6 +13412,7 @@ static void bnx2x_disable_kr2(struct link_params *params, vars->link_attr_sync &= ~LINK_ATTR_SYNC_KR2_ENABLE; bnx2x_update_link_attr(params, vars->link_attr_sync); + vars->check_kr2_recovery_cnt = CHECK_KR2_RECOVERY_CNT; /* Restart AN on leading lane */ bnx2x_warpcore_restart_AN_KR(phy, params); } @@ -13439,6 +13441,15 @@ static void bnx2x_check_kr2_wa(struct link_params *params, return; } + /* Once KR2 was disabled, wait 5 seconds before checking KR2 recovery + * since some switches tend to reinit the AN process and clear the + * advertised BP/NP after ~2 seconds causing the KR2 to be disabled + * and recovered many times + */ + if (vars->check_kr2_recovery_cnt > 0) { + vars->check_kr2_recovery_cnt--; + return; + } lane = bnx2x_get_warpcore_lane(phy, params); CL22_WR_OVER_CL45(bp, phy, MDIO_REG_BANK_AER_BLOCK, MDIO_AER_BLOCK_AER_REG, lane); diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h index be5c195..f92fcf7 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h @@ -342,7 +342,8 @@ struct link_vars { u32 link_status; u32 eee_status; u8 fault_detected; - u8 rsrv1; + u8 check_kr2_recovery_cnt; +#define CHECK_KR2_RECOVERY_CNT 5 u16 periodic_flags; #define PERIODIC_FLAGS_LINK_EVENT 0x0001 -- cgit v1.1 From d9169323308a63fdd967920b9c63a00394ae7c85 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Thu, 7 Mar 2013 13:27:34 +0000 Subject: bnx2x: Fix SFP+ misconfiguration in iSCSI boot scenario Fix a problem in which iSCSI-boot installation fails when switching SFP+ boot port and moving the SFP+ module prior to boot. The SFP+ insertion triggers an interrupt which configures the SFP+ module wrongly before interface is loaded. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 6 +++++- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h | 1 + 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 00ac493..77ebae0 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -8647,7 +8647,9 @@ void bnx2x_handle_module_detect_int(struct link_params *params) MDIO_WC_DEVAD, MDIO_WC_REG_DIGITAL5_MISC6, &rx_tx_in_reset); - if (!rx_tx_in_reset) { + if ((!rx_tx_in_reset) && + (params->link_flags & + PHY_INITIALIZED)) { bnx2x_warpcore_reset_lane(bp, phy, 1); bnx2x_warpcore_config_sfi(phy, params); bnx2x_warpcore_reset_lane(bp, phy, 0); @@ -12528,6 +12530,7 @@ int bnx2x_phy_init(struct link_params *params, struct link_vars *vars) vars->mac_type = MAC_TYPE_NONE; vars->phy_flags = 0; vars->check_kr2_recovery_cnt = 0; + params->link_flags = PHY_INITIALIZED; /* Driver opens NIG-BRB filters */ bnx2x_set_rx_filter(params, 1); /* Check if link flap can be avoided */ @@ -12692,6 +12695,7 @@ int bnx2x_lfa_reset(struct link_params *params, struct bnx2x *bp = params->bp; vars->link_up = 0; vars->phy_flags = 0; + params->link_flags &= ~PHY_INITIALIZED; if (!params->lfa_base) return bnx2x_link_reset(params, vars, 1); /* diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h index f92fcf7..56c2aae 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.h @@ -309,6 +309,7 @@ struct link_params { req_flow_ctrl is set to AUTO */ u16 link_flags; #define LINK_FLAGS_INT_DISABLED (1<<0) +#define PHY_INITIALIZED (1<<1) u32 lfa_base; }; -- cgit v1.1 From 2e85d67690cf3ea3f074a6e872f675226883fe7f Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 7 Mar 2013 17:19:32 +0000 Subject: net/rds: zero last byte for strncpy for NUL terminated string, need be always sure '\0' in the end. additional info: strncpy will pads with zeroes to the end of the given buffer. should initialise every bit of memory that is going to be copied to userland Signed-off-by: Chen Gang Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- net/rds/stats.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/rds/stats.c b/net/rds/stats.c index 7be790d..73be187 100644 --- a/net/rds/stats.c +++ b/net/rds/stats.c @@ -87,6 +87,7 @@ void rds_stats_info_copy(struct rds_info_iterator *iter, for (i = 0; i < nr; i++) { BUG_ON(strlen(names[i]) >= sizeof(ctr.name)); strncpy(ctr.name, names[i], sizeof(ctr.name) - 1); + ctr.name[sizeof(ctr.name) - 1] = '\0'; ctr.value = values[i]; rds_info_copy(iter, &ctr, sizeof(ctr)); -- cgit v1.1 From f39479363e0361c8bb4397481c01a7c3a1a3c8ac Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Thu, 7 Mar 2013 18:25:41 +0000 Subject: drivers/isdn: checkng length to be sure not memory overflow sizeof (cmd.parm.cmsg.para) is 50 (MAX_CAPI_PARA_LEN). sizeof (cmd.parm) is 80+, but less than 100. strlen(msg) may be more than 80+ (Modem-Commandbuffer, less than 255). isdn_tty_send_msg is called by isdn_tty_parse_at the relative parameter is m->mdmcmd (atemu *m) the relative command may be "+M..." so need check the length to be sure not memory overflow. cmd.parm is a union, and need keep original valid buffer length no touch Signed-off-by: Chen Gang Signed-off-by: David S. Miller --- drivers/isdn/i4l/isdn_tty.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index d8a7d83..ebaebdf 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -902,7 +902,9 @@ isdn_tty_send_msg(modem_info *info, atemu *m, char *msg) int j; int l; - l = strlen(msg); + l = min(strlen(msg), sizeof(cmd.parm) - sizeof(cmd.parm.cmsg) + + sizeof(cmd.parm.cmsg.para) - 2); + if (!l) { isdn_tty_modem_result(RESULT_ERROR, info); return; -- cgit v1.1 From c390b0363d6cc201db93de69b5e88f482322d821 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 8 Mar 2013 09:42:50 +0200 Subject: usb: dwc3: ep0: fix sparc64 build drivers/usb/dwc3/ep0.c: In function `__dwc3_ep0_do_control_data': drivers/usb/dwc3/ep0.c:905: error: `typeof' applied to a bit-field Looks like a gcc-3.4.5/sparc64 bug. Cc: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index d7da073..1d139ca 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -891,7 +891,8 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, DWC3_TRBCTL_CONTROL_DATA); } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) && (dep->number == 0)) { - u32 transfer_size; + u32 transfer_size; + u32 maxpacket; ret = usb_gadget_map_request(&dwc->gadget, &req->request, dep->number); @@ -902,8 +903,8 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE); - transfer_size = roundup(req->request.length, - (u32) dep->endpoint.maxpacket); + maxpacket = dep->endpoint.maxpacket; + transfer_size = roundup(req->request.length, maxpacket); dwc->ep0_bounced = true; -- cgit v1.1 From 1abccd7419de9829bcdf9ab1f81d5f6cf74d55d3 Mon Sep 17 00:00:00 2001 From: Hiraku Toyooka Date: Fri, 8 Mar 2013 16:32:25 +0900 Subject: tracing: update documentation of snapshot utility Now, "snapshot" file returns success on a reset of snapshot buffer even if the buffer wasn't allocated, instead of returning EINVAL. This patch updates snapshot desctiption according to the change. Link: http://lkml.kernel.org/r/51399409.4090207@hitachi.com Signed-off-by: Hiraku Toyooka Signed-off-by: Steven Rostedt --- Documentation/trace/ftrace.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt index 53d6a3c..a372304 100644 --- a/Documentation/trace/ftrace.txt +++ b/Documentation/trace/ftrace.txt @@ -1873,7 +1873,7 @@ feature: status\input | 0 | 1 | else | --------------+------------+------------+------------+ - not allocated |(do nothing)| alloc+swap | EINVAL | + not allocated |(do nothing)| alloc+swap |(do nothing)| --------------+------------+------------+------------+ allocated | free | swap | clear | --------------+------------+------------+------------+ -- cgit v1.1 From 5ca1088f10d6179a610067ebedc56edc7d98b986 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 7 Mar 2013 09:02:38 +0100 Subject: Revert "mtd: bcm47xxpart: improve probing of nvram partition" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit be3781b71ac03723b552dc156931620634ef1b22. Some CFE bootloaders have NVRAM at offset 0x1000. With that patch we were detecting such a bootloaders as a standard NVRAM partition. Changing anything in this pseudo-NVRAM resulted in corrupted bootloader and bricked device! Signed-off-by: Rafał Miłecki Signed-off-by: David Woodhouse --- drivers/mtd/bcm47xxpart.c | 22 +++++++++------------- 1 file changed, 9 insertions(+), 13 deletions(-) diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 63feb75..4552afb 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -19,6 +19,12 @@ /* 10 parts were found on sflash on Netgear WNDR4500 */ #define BCM47XXPART_MAX_PARTS 12 +/* + * Amount of bytes we read when analyzing each block of flash memory. + * Set it big enough to allow detecting partition and reading important data. + */ +#define BCM47XXPART_BYTES_TO_READ 0x404 + /* Magics */ #define BOARD_DATA_MAGIC 0x5246504D /* MPFR */ #define POT_MAGIC1 0x54544f50 /* POTT */ @@ -57,17 +63,14 @@ static int bcm47xxpart_parse(struct mtd_info *master, struct trx_header *trx; int trx_part = -1; int last_trx_part = -1; - int max_bytes_to_read = 0x8004; if (blocksize <= 0x10000) blocksize = 0x10000; - if (blocksize == 0x20000) - max_bytes_to_read = 0x18004; /* Alloc */ parts = kzalloc(sizeof(struct mtd_partition) * BCM47XXPART_MAX_PARTS, GFP_KERNEL); - buf = kzalloc(max_bytes_to_read, GFP_KERNEL); + buf = kzalloc(BCM47XXPART_BYTES_TO_READ, GFP_KERNEL); /* Parse block by block looking for magics */ for (offset = 0; offset <= master->size - blocksize; @@ -82,7 +85,7 @@ static int bcm47xxpart_parse(struct mtd_info *master, } /* Read beginning of the block */ - if (mtd_read(master, offset, max_bytes_to_read, + if (mtd_read(master, offset, BCM47XXPART_BYTES_TO_READ, &bytes_read, (uint8_t *)buf) < 0) { pr_err("mtd_read error while parsing (offset: 0x%X)!\n", offset); @@ -97,16 +100,9 @@ static int bcm47xxpart_parse(struct mtd_info *master, } /* Standard NVRAM */ - if (buf[0x000 / 4] == NVRAM_HEADER || - buf[0x1000 / 4] == NVRAM_HEADER || - buf[0x8000 / 4] == NVRAM_HEADER || - (blocksize == 0x20000 && ( - buf[0x10000 / 4] == NVRAM_HEADER || - buf[0x11000 / 4] == NVRAM_HEADER || - buf[0x18000 / 4] == NVRAM_HEADER))) { + if (buf[0x000 / 4] == NVRAM_HEADER) { bcm47xxpart_add_part(&parts[curr_part++], "nvram", offset, 0); - offset = rounddown(offset, blocksize); continue; } -- cgit v1.1 From 91d542f4dcc231749c36114ed8e26bb27d4521e4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 7 Mar 2013 09:02:39 +0100 Subject: mtd: bcm47xxpart: look for NVRAM at the end of device MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit NVRAM is always placed at the end of device and it does not have to start at the beginning of a block, so check few possible offsets. Signed-off-by: Rafał Miłecki Signed-off-by: David Woodhouse --- drivers/mtd/bcm47xxpart.c | 32 +++++++++++++++++++++++++------- 1 file changed, 25 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/bcm47xxpart.c b/drivers/mtd/bcm47xxpart.c index 4552afb..9279a91 100644 --- a/drivers/mtd/bcm47xxpart.c +++ b/drivers/mtd/bcm47xxpart.c @@ -63,6 +63,7 @@ static int bcm47xxpart_parse(struct mtd_info *master, struct trx_header *trx; int trx_part = -1; int last_trx_part = -1; + int possible_nvram_sizes[] = { 0x8000, 0xF000, 0x10000, }; if (blocksize <= 0x10000) blocksize = 0x10000; @@ -99,13 +100,6 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } - /* Standard NVRAM */ - if (buf[0x000 / 4] == NVRAM_HEADER) { - bcm47xxpart_add_part(&parts[curr_part++], "nvram", - offset, 0); - continue; - } - /* * board_data starts with board_id which differs across boards, * but we can use 'MPFR' (hopefully) magic at 0x100 @@ -174,6 +168,30 @@ static int bcm47xxpart_parse(struct mtd_info *master, continue; } } + + /* Look for NVRAM at the end of the last block. */ + for (i = 0; i < ARRAY_SIZE(possible_nvram_sizes); i++) { + if (curr_part > BCM47XXPART_MAX_PARTS) { + pr_warn("Reached maximum number of partitions, scanning stopped!\n"); + break; + } + + offset = master->size - possible_nvram_sizes[i]; + if (mtd_read(master, offset, 0x4, &bytes_read, + (uint8_t *)buf) < 0) { + pr_err("mtd_read error while reading at offset 0x%X!\n", + offset); + continue; + } + + /* Standard NVRAM */ + if (buf[0] == NVRAM_HEADER) { + bcm47xxpart_add_part(&parts[curr_part++], "nvram", + master->size - blocksize, 0); + break; + } + } + kfree(buf); /* -- cgit v1.1 From b141e811a0763bb107af4cd99d456193ccdb8053 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Thu, 21 Feb 2013 11:04:45 +0100 Subject: NFC: llcp: Decrease socket ack log when accepting a connection This is really difficult to test with real NFC devices, but without this fix an LLCP server will eventually refuse new connections. Signed-off-by: Samuel Ortiz --- net/nfc/llcp/sock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c index 5332751..5c7cdf3f 100644 --- a/net/nfc/llcp/sock.c +++ b/net/nfc/llcp/sock.c @@ -278,6 +278,8 @@ struct sock *nfc_llcp_accept_dequeue(struct sock *parent, pr_debug("Returning sk state %d\n", sk->sk_state); + sk_acceptq_removed(parent); + return sk; } -- cgit v1.1 From 3536da06db0baa675f32de608c0a4c0f5ef0e9ff Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Thu, 21 Feb 2013 15:40:04 +0100 Subject: NFC: llcp: Clean local timers and works when removing a device Whenever an adapter is removed we must clean all the local structures, especially the timers and scheduled work. Otherwise those asynchronous threads will eventually try to access the freed nfc_dev pointer if an LLCP link is up. Signed-off-by: Samuel Ortiz --- net/nfc/llcp/llcp.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c index 7f8266d..77e1d97 100644 --- a/net/nfc/llcp/llcp.c +++ b/net/nfc/llcp/llcp.c @@ -142,20 +142,25 @@ struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) return local; } -static void local_release(struct kref *ref) +static void local_cleanup(struct nfc_llcp_local *local, bool listen) { - struct nfc_llcp_local *local; - - local = container_of(ref, struct nfc_llcp_local, ref); - - list_del(&local->list); - nfc_llcp_socket_release(local, false); + nfc_llcp_socket_release(local, listen); del_timer_sync(&local->link_timer); skb_queue_purge(&local->tx_queue); cancel_work_sync(&local->tx_work); cancel_work_sync(&local->rx_work); cancel_work_sync(&local->timeout_work); kfree_skb(local->rx_pending); +} + +static void local_release(struct kref *ref) +{ + struct nfc_llcp_local *local; + + local = container_of(ref, struct nfc_llcp_local, ref); + + list_del(&local->list); + local_cleanup(local, false); kfree(local); } @@ -1427,6 +1432,8 @@ void nfc_llcp_unregister_device(struct nfc_dev *dev) return; } + local_cleanup(local, false); + nfc_llcp_local_put(local); } -- cgit v1.1 From 44e9ac45754a182e8121bf137368452365d4cc4b Mon Sep 17 00:00:00 2001 From: Simon Horman Date: Wed, 13 Feb 2013 09:45:50 +0000 Subject: ARM: shmobile: marzen: Include mmc/host.h mmc/host.h provides MMC_CAP_SD_HIGHSPEED which is used in board-marzen.c This resolves a build problem observed when compiling with "mmc: tmio: remove unused and deprecated symbols" applied. Acked-by: Guennadi Liakhovetski Signed-off-by: Simon Horman --- arch/arm/mach-shmobile/board-marzen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-shmobile/board-marzen.c b/arch/arm/mach-shmobile/board-marzen.c index cdcb799..fec49eb 100644 --- a/arch/arm/mach-shmobile/board-marzen.c +++ b/arch/arm/mach-shmobile/board-marzen.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #include #include -- cgit v1.1 From a6a8fe950e1b8596bb06f2c89c3a1a4bf2011ba9 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Fri, 8 Mar 2013 09:45:39 -0500 Subject: netlabel: fix build problems when CONFIG_IPV6=n My last patch to solve a problem where the static/fallback labels were not fully displayed resulted in build problems when IPv6 was disabled. This patch resolves the IPv6 build problems; sorry for the screw-up. Please queue for -stable or simply merge with the previous patch. Reported-by: Kbuild Test Robot Signed-off-by: Paul Moore Signed-off-by: David S. Miller --- net/netlabel/netlabel_unlabeled.c | 15 +++++---------- 1 file changed, 5 insertions(+), 10 deletions(-) diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c index 85742b7..8a6c6ea 100644 --- a/net/netlabel/netlabel_unlabeled.c +++ b/net/netlabel/netlabel_unlabeled.c @@ -1189,8 +1189,6 @@ static int netlbl_unlabel_staticlist(struct sk_buff *skb, struct netlbl_unlhsh_walk_arg cb_arg; u32 skip_bkt = cb->args[0]; u32 skip_chain = cb->args[1]; - u32 skip_addr4 = cb->args[2]; - u32 skip_addr6 = cb->args[3]; u32 iter_bkt; u32 iter_chain = 0, iter_addr4 = 0, iter_addr6 = 0; struct netlbl_unlhsh_iface *iface; @@ -1215,7 +1213,7 @@ static int netlbl_unlabel_staticlist(struct sk_buff *skb, continue; netlbl_af4list_foreach_rcu(addr4, &iface->addr4_list) { - if (iter_addr4++ < skip_addr4) + if (iter_addr4++ < cb->args[2]) continue; if (netlbl_unlabel_staticlist_gen( NLBL_UNLABEL_C_STATICLIST, @@ -1231,7 +1229,7 @@ static int netlbl_unlabel_staticlist(struct sk_buff *skb, #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_rcu(addr6, &iface->addr6_list) { - if (iter_addr6++ < skip_addr6) + if (iter_addr6++ < cb->args[3]) continue; if (netlbl_unlabel_staticlist_gen( NLBL_UNLABEL_C_STATICLIST, @@ -1273,12 +1271,9 @@ static int netlbl_unlabel_staticlistdef(struct sk_buff *skb, { struct netlbl_unlhsh_walk_arg cb_arg; struct netlbl_unlhsh_iface *iface; - u32 skip_addr4 = cb->args[0]; - u32 skip_addr6 = cb->args[1]; - u32 iter_addr4 = 0; + u32 iter_addr4 = 0, iter_addr6 = 0; struct netlbl_af4list *addr4; #if IS_ENABLED(CONFIG_IPV6) - u32 iter_addr6 = 0; struct netlbl_af6list *addr6; #endif @@ -1292,7 +1287,7 @@ static int netlbl_unlabel_staticlistdef(struct sk_buff *skb, goto unlabel_staticlistdef_return; netlbl_af4list_foreach_rcu(addr4, &iface->addr4_list) { - if (iter_addr4++ < skip_addr4) + if (iter_addr4++ < cb->args[0]) continue; if (netlbl_unlabel_staticlist_gen(NLBL_UNLABEL_C_STATICLISTDEF, iface, @@ -1305,7 +1300,7 @@ static int netlbl_unlabel_staticlistdef(struct sk_buff *skb, } #if IS_ENABLED(CONFIG_IPV6) netlbl_af6list_foreach_rcu(addr6, &iface->addr6_list) { - if (iter_addr6++ < skip_addr6) + if (iter_addr6++ < cb->args[1]) continue; if (netlbl_unlabel_staticlist_gen(NLBL_UNLABEL_C_STATICLISTDEF, iface, -- cgit v1.1 From e6a3a4bb856a6fba551b43376c80f45836132710 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Thu, 21 Feb 2013 16:33:30 +0100 Subject: NFC: llcp: Clean raw sockets from nfc_llcp_socket_release Signed-off-by: Samuel Ortiz --- net/nfc/llcp/llcp.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c index 77e1d97..8a35423 100644 --- a/net/nfc/llcp/llcp.c +++ b/net/nfc/llcp/llcp.c @@ -133,6 +133,35 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) } write_unlock(&local->sockets.lock); + + /* + * If we want to keep the listening sockets alive, + * we don't touch the RAW ones. + */ + if (listen == true) + return; + + write_lock(&local->raw_sockets.lock); + + sk_for_each_safe(sk, tmp, &local->raw_sockets.head) { + llcp_sock = nfc_llcp_sock(sk); + + bh_lock_sock(sk); + + nfc_llcp_socket_purge(llcp_sock); + + sk->sk_state = LLCP_CLOSED; + + sk->sk_state_change(sk); + + bh_unlock_sock(sk); + + sock_orphan(sk); + + sk_del_node_init(sk); + } + + write_unlock(&local->raw_sockets.lock); } struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) -- cgit v1.1 From 3bbc0ceb7ac2bf694d31362eea2c71a680e5deeb Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Thu, 21 Feb 2013 17:01:06 +0100 Subject: NFC: llcp: Report error to pending sockets when a device is removed Signed-off-by: Samuel Ortiz --- net/nfc/llcp/llcp.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/net/nfc/llcp/llcp.c b/net/nfc/llcp/llcp.c index 8a35423..b530afa 100644 --- a/net/nfc/llcp/llcp.c +++ b/net/nfc/llcp/llcp.c @@ -68,7 +68,8 @@ static void nfc_llcp_socket_purge(struct nfc_llcp_sock *sock) } } -static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) +static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen, + int err) { struct sock *sk; struct hlist_node *tmp; @@ -100,7 +101,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) nfc_llcp_accept_unlink(accept_sk); + if (err) + accept_sk->sk_err = err; accept_sk->sk_state = LLCP_CLOSED; + accept_sk->sk_state_change(sk); bh_unlock_sock(accept_sk); @@ -123,7 +127,10 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) continue; } + if (err) + sk->sk_err = err; sk->sk_state = LLCP_CLOSED; + sk->sk_state_change(sk); bh_unlock_sock(sk); @@ -150,8 +157,9 @@ static void nfc_llcp_socket_release(struct nfc_llcp_local *local, bool listen) nfc_llcp_socket_purge(llcp_sock); + if (err) + sk->sk_err = err; sk->sk_state = LLCP_CLOSED; - sk->sk_state_change(sk); bh_unlock_sock(sk); @@ -173,7 +181,7 @@ struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local) static void local_cleanup(struct nfc_llcp_local *local, bool listen) { - nfc_llcp_socket_release(local, listen); + nfc_llcp_socket_release(local, listen, ENXIO); del_timer_sync(&local->link_timer); skb_queue_purge(&local->tx_queue); cancel_work_sync(&local->tx_work); @@ -1382,7 +1390,7 @@ void nfc_llcp_mac_is_down(struct nfc_dev *dev) return; /* Close and purge all existing sockets */ - nfc_llcp_socket_release(local, true); + nfc_llcp_socket_release(local, true, 0); } void nfc_llcp_mac_is_up(struct nfc_dev *dev, u32 target_idx, -- cgit v1.1 From 7b54c165a0c012edbaeaa73c5c87cb73721eb580 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 8 Mar 2013 09:03:07 -0800 Subject: vfs: don't BUG_ON() if following a /proc fd pseudo-symlink results in a symlink It's "normal" - it can happen if the file descriptor you followed was opened with O_NOFOLLOW. Reported-by: Dave Jones Cc: Al Viro Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- fs/namei.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/namei.c b/fs/namei.c index 961bc12..57ae9c8 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -689,8 +689,6 @@ void nd_jump_link(struct nameidata *nd, struct path *path) nd->path = *path; nd->inode = nd->path.dentry->d_inode; nd->flags |= LOOKUP_JUMPED; - - BUG_ON(nd->inode->i_op->follow_link); } static inline void put_link(struct nameidata *nd, struct path *link, void *cookie) -- cgit v1.1 From 3bc1b1add7a8484cc4a261c3e128dbe1528ce01f Mon Sep 17 00:00:00 2001 From: Cristian Bercaru Date: Fri, 8 Mar 2013 07:03:38 +0000 Subject: bridging: fix rx_handlers return code The frames for which rx_handlers return RX_HANDLER_CONSUMED are no longer counted as dropped. They are counted as successfully received by 'netif_receive_skb'. This allows network interface drivers to correctly update their RX-OK and RX-DRP counters based on the result of 'netif_receive_skb'. Signed-off-by: Cristian Bercaru Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/dev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/dev.c b/net/core/dev.c index 8f152f9..dffbef7 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -3444,6 +3444,7 @@ ncls: } switch (rx_handler(&skb)) { case RX_HANDLER_CONSUMED: + ret = NET_RX_SUCCESS; goto unlock; case RX_HANDLER_ANOTHER: goto another_round; -- cgit v1.1 From ddf64354af4a702ee0b85d0a285ba74c7278a460 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Fri, 8 Mar 2013 02:07:23 +0000 Subject: ipv6: stop multicast forwarding to process interface scoped addresses v2: a) used struct ipv6_addr_props v3: a) reverted changes for ipv6_addr_props v4: a) do not use __ipv6_addr_needs_scope_id Cc: YOSHIFUJI Hideaki Signed-off-by: Hannes Frederic Sowa Acked-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ipv6/ip6_input.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index b1876e5..e33fe0a 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -281,7 +281,8 @@ int ip6_mc_input(struct sk_buff *skb) * IPv6 multicast router mode is now supported ;) */ if (dev_net(skb->dev)->ipv6.devconf_all->mc_forwarding && - !(ipv6_addr_type(&hdr->daddr) & IPV6_ADDR_LINKLOCAL) && + !(ipv6_addr_type(&hdr->daddr) & + (IPV6_ADDR_LOOPBACK|IPV6_ADDR_LINKLOCAL)) && likely(!(IP6CB(skb)->flags & IP6SKB_FORWARDED))) { /* * Okay, we try to forward - split and duplicate -- cgit v1.1 From 84421b99cedc3443e76d2a594f3c815d5cb9a8e1 Mon Sep 17 00:00:00 2001 From: Nithin Sujir Date: Fri, 8 Mar 2013 08:01:24 +0000 Subject: tg3: Update link_up flag for phylib devices Commit f4a46d1f46a8fece34edd2023e054072b02e110d introduced a bug where the ifconfig stats would remain 0 for phylib devices. This is due to tp->link_up flag never becoming true causing tg3_periodic_fetch_stats() to return. The link_up flag was being updated in tg3_test_and_report_link_chg() after setting up the phy. This function however, is not called for phylib devices since the driver does not do the phy setup. This patch moves the link_up flag update into the common tg3_link_report() function that gets called for phylib devices as well for non phylib devices when the link state changes. To avoid updating link_up twice, we replace tg3_carrier_...() calls that are followed by tg3_link_report(), with netif_carrier_...(). We can then remove the unused tg3_carrier_on() function. CC: Reported-by: OGAWA Hirofumi Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index fdb9b56..93729f9 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -1869,6 +1869,8 @@ static void tg3_link_report(struct tg3 *tp) tg3_ump_link_report(tp); } + + tp->link_up = netif_carrier_ok(tp->dev); } static u16 tg3_advert_flowctrl_1000X(u8 flow_ctrl) @@ -2522,12 +2524,6 @@ static int tg3_phy_reset_5703_4_5(struct tg3 *tp) return err; } -static void tg3_carrier_on(struct tg3 *tp) -{ - netif_carrier_on(tp->dev); - tp->link_up = true; -} - static void tg3_carrier_off(struct tg3 *tp) { netif_carrier_off(tp->dev); @@ -2553,7 +2549,7 @@ static int tg3_phy_reset(struct tg3 *tp) return -EBUSY; if (netif_running(tp->dev) && tp->link_up) { - tg3_carrier_off(tp); + netif_carrier_off(tp->dev); tg3_link_report(tp); } @@ -4262,9 +4258,9 @@ static bool tg3_test_and_report_link_chg(struct tg3 *tp, int curr_link_up) { if (curr_link_up != tp->link_up) { if (curr_link_up) { - tg3_carrier_on(tp); + netif_carrier_on(tp->dev); } else { - tg3_carrier_off(tp); + netif_carrier_off(tp->dev); if (tp->phy_flags & TG3_PHYFLG_MII_SERDES) tp->phy_flags &= ~TG3_PHYFLG_PARALLEL_DETECT; } -- cgit v1.1 From 5f0fabf84d7b52f979dcbafa3d3c530c60d9a92c Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Thu, 7 Mar 2013 20:00:16 -0800 Subject: mwifiex: fix potential out-of-boundary access to ibss rate table smatch found this error: CHECK drivers/net/wireless/mwifiex/join.c drivers/net/wireless/mwifiex/join.c:1121 mwifiex_cmd_802_11_ad_hoc_join() error: testing array offset 'i' after use. Cc: # 3.0+ Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/join.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/mwifiex/join.c b/drivers/net/wireless/mwifiex/join.c index 246aa62..2fe0ceb 100644 --- a/drivers/net/wireless/mwifiex/join.c +++ b/drivers/net/wireless/mwifiex/join.c @@ -1117,10 +1117,9 @@ mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv, adhoc_join->bss_descriptor.bssid, adhoc_join->bss_descriptor.ssid); - for (i = 0; bss_desc->supported_rates[i] && - i < MWIFIEX_SUPPORTED_RATES; - i++) - ; + for (i = 0; i < MWIFIEX_SUPPORTED_RATES && + bss_desc->supported_rates[i]; i++) + ; rates_size = i; /* Copy Data Rates from the Rates recorded in scan response */ -- cgit v1.1 From 664899786cb49cb52f620e06ac19c0be524a7cfa Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 27 Feb 2013 14:10:30 -0600 Subject: rtlwifi: rtl8192cu: Fix schedule while atomic bug splat When run at debug 3 or higher, rtl8192cu reports a BUG as follows: BUG: scheduling while atomic: kworker/u:0/5281/0x00000002 INFO: lockdep is turned off. Modules linked in: rtl8192cu rtl8192c_common rtlwifi fuse af_packet bnep bluetooth b43 mac80211 cfg80211 ipv6 snd_hda_codec_conexant kvm_amd k vm snd_hda_intel snd_hda_codec bcma rng_core snd_pcm ssb mmc_core snd_seq snd_timer snd_seq_device snd i2c_nforce2 sr_mod pcmcia forcedeth i2c_core soundcore cdrom sg serio_raw k8temp hwmon joydev ac battery pcmcia_core snd_page_alloc video button wmi autofs4 ext4 mbcache jbd2 crc16 thermal processor scsi_dh_alua scsi_dh_hp_sw scsi_dh_rdac scsi_dh_emc scsi_dh ata_generic pata_acpi pata_amd [last unloaded: rtlwifi] Pid: 5281, comm: kworker/u:0 Tainted: G W 3.8.0-wl+ #119 Call Trace: [] __schedule_bug+0x62/0x70 [] __schedule+0x730/0xa30 [] ? usb_hcd_link_urb_to_ep+0x19/0xa0 [] schedule+0x24/0x70 [] schedule_timeout+0x18c/0x2f0 [] ? wait_for_common+0x40/0x180 [] ? ehci_urb_enqueue+0xf1/0xee0 [] ? trace_hardirqs_on+0xd/0x10 [] wait_for_common+0xe5/0x180 [] ? try_to_wake_up+0x2d0/0x2d0 [] wait_for_completion_timeout+0xe/0x10 [] usb_start_wait_urb+0x8c/0x100 [] usb_control_msg+0xd9/0x130 [] _usb_read_sync+0xcd/0x140 [rtlwifi] [] _usb_read32_sync+0xe/0x10 [rtlwifi] [] rtl92cu_update_hal_rate_table+0x1a5/0x1f0 [rtl8192cu] The cause is a synchronous read from routine rtl92cu_update_hal_rate_table(). The resulting output is not critical, thus the debug statement is deleted. Reported-by: Jussi Kivilinna Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192cu/hw.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c index b1ccff4..3c6e18c 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c @@ -2058,8 +2058,6 @@ void rtl92cu_update_hal_rate_table(struct ieee80211_hw *hw, (shortgi_rate << 4) | (shortgi_rate); } rtl_write_dword(rtlpriv, REG_ARFR0 + ratr_index * 4, ratr_value); - RT_TRACE(rtlpriv, COMP_RATR, DBG_DMESG, "%x\n", - rtl_read_dword(rtlpriv, REG_ARFR0)); } void rtl92cu_update_hal_rate_mask(struct ieee80211_hw *hw, u8 rssi_level) -- cgit v1.1 From 93fff4ce19f9978cc1c59db42760717477939249 Mon Sep 17 00:00:00 2001 From: Jason Cooper Date: Tue, 29 Jan 2013 20:36:43 +0000 Subject: ARM: kirkwood: of_serial: fix clock gating by removing clock-frequency When DT support for kirkwood was first introduced, there was no clock infrastructure. As a result, we had to manually pass the clock-frequency to the driver from the device node. Unfortunately, on kirkwood, with minimal config or all module configs, clock-frequency breaks booting because of_serial doesn't consume the gate_clk when clock-frequency is defined. The end result on kirkwood is that runit gets gated, and then the boot fails when the kernel tries to write to the serial port. Fix the issue by removing the clock-frequency parameter from all kirkwood dts files. Booted on dreamplug without earlyprintk and successfully logged in via ttyS0. Reported-by: Simon Baatz Tested-by: Simon Baatz Cc: Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood-dns320.dts | 2 -- arch/arm/boot/dts/kirkwood-dns325.dts | 1 - arch/arm/boot/dts/kirkwood-dockstar.dts | 1 - arch/arm/boot/dts/kirkwood-dreamplug.dts | 1 - arch/arm/boot/dts/kirkwood-goflexnet.dts | 1 - arch/arm/boot/dts/kirkwood-ib62x0.dts | 1 - arch/arm/boot/dts/kirkwood-iconnect.dts | 1 - arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts | 1 - arch/arm/boot/dts/kirkwood-km_kirkwood.dts | 1 - arch/arm/boot/dts/kirkwood-lschlv2.dts | 1 - arch/arm/boot/dts/kirkwood-lsxhl.dts | 1 - arch/arm/boot/dts/kirkwood-mplcec4.dts | 1 - arch/arm/boot/dts/kirkwood-ns2-common.dtsi | 1 - arch/arm/boot/dts/kirkwood-nsa310.dts | 1 - arch/arm/boot/dts/kirkwood-openblocks_a6.dts | 2 -- arch/arm/boot/dts/kirkwood-topkick.dts | 1 - arch/arm/boot/dts/kirkwood.dtsi | 2 -- 17 files changed, 20 deletions(-) diff --git a/arch/arm/boot/dts/kirkwood-dns320.dts b/arch/arm/boot/dts/kirkwood-dns320.dts index 5bb0bf3..c9c44b2 100644 --- a/arch/arm/boot/dts/kirkwood-dns320.dts +++ b/arch/arm/boot/dts/kirkwood-dns320.dts @@ -42,12 +42,10 @@ ocp@f1000000 { serial@12000 { - clock-frequency = <166666667>; status = "okay"; }; serial@12100 { - clock-frequency = <166666667>; status = "okay"; }; }; diff --git a/arch/arm/boot/dts/kirkwood-dns325.dts b/arch/arm/boot/dts/kirkwood-dns325.dts index d430713..e4e4930 100644 --- a/arch/arm/boot/dts/kirkwood-dns325.dts +++ b/arch/arm/boot/dts/kirkwood-dns325.dts @@ -50,7 +50,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "okay"; }; }; diff --git a/arch/arm/boot/dts/kirkwood-dockstar.dts b/arch/arm/boot/dts/kirkwood-dockstar.dts index 2e3dd34..0196cf6 100644 --- a/arch/arm/boot/dts/kirkwood-dockstar.dts +++ b/arch/arm/boot/dts/kirkwood-dockstar.dts @@ -37,7 +37,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-dreamplug.dts b/arch/arm/boot/dts/kirkwood-dreamplug.dts index ef2d8c7..289e51d8 100644 --- a/arch/arm/boot/dts/kirkwood-dreamplug.dts +++ b/arch/arm/boot/dts/kirkwood-dreamplug.dts @@ -38,7 +38,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-goflexnet.dts b/arch/arm/boot/dts/kirkwood-goflexnet.dts index 1b133e0..bd83b8f 100644 --- a/arch/arm/boot/dts/kirkwood-goflexnet.dts +++ b/arch/arm/boot/dts/kirkwood-goflexnet.dts @@ -73,7 +73,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-ib62x0.dts b/arch/arm/boot/dts/kirkwood-ib62x0.dts index 71902da..5335b1a 100644 --- a/arch/arm/boot/dts/kirkwood-ib62x0.dts +++ b/arch/arm/boot/dts/kirkwood-ib62x0.dts @@ -51,7 +51,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "okay"; }; diff --git a/arch/arm/boot/dts/kirkwood-iconnect.dts b/arch/arm/boot/dts/kirkwood-iconnect.dts index 504f16b..12ccf74 100644 --- a/arch/arm/boot/dts/kirkwood-iconnect.dts +++ b/arch/arm/boot/dts/kirkwood-iconnect.dts @@ -78,7 +78,6 @@ }; }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts b/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts index 6cae459..93c3afb 100644 --- a/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts +++ b/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts @@ -115,7 +115,6 @@ }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-km_kirkwood.dts b/arch/arm/boot/dts/kirkwood-km_kirkwood.dts index 8db3123..5bbd054 100644 --- a/arch/arm/boot/dts/kirkwood-km_kirkwood.dts +++ b/arch/arm/boot/dts/kirkwood-km_kirkwood.dts @@ -34,7 +34,6 @@ }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-lschlv2.dts b/arch/arm/boot/dts/kirkwood-lschlv2.dts index 9510c9e..9f55d95 100644 --- a/arch/arm/boot/dts/kirkwood-lschlv2.dts +++ b/arch/arm/boot/dts/kirkwood-lschlv2.dts @@ -13,7 +13,6 @@ ocp@f1000000 { serial@12000 { - clock-frequency = <166666667>; status = "okay"; }; }; diff --git a/arch/arm/boot/dts/kirkwood-lsxhl.dts b/arch/arm/boot/dts/kirkwood-lsxhl.dts index 739019c..5c84c11 100644 --- a/arch/arm/boot/dts/kirkwood-lsxhl.dts +++ b/arch/arm/boot/dts/kirkwood-lsxhl.dts @@ -13,7 +13,6 @@ ocp@f1000000 { serial@12000 { - clock-frequency = <200000000>; status = "okay"; }; }; diff --git a/arch/arm/boot/dts/kirkwood-mplcec4.dts b/arch/arm/boot/dts/kirkwood-mplcec4.dts index 662dfd8..7588241 100644 --- a/arch/arm/boot/dts/kirkwood-mplcec4.dts +++ b/arch/arm/boot/dts/kirkwood-mplcec4.dts @@ -90,7 +90,6 @@ }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi index e8e7ece..6affd92 100644 --- a/arch/arm/boot/dts/kirkwood-ns2-common.dtsi +++ b/arch/arm/boot/dts/kirkwood-ns2-common.dtsi @@ -23,7 +23,6 @@ }; serial@12000 { - clock-frequency = <166666667>; status = "okay"; }; diff --git a/arch/arm/boot/dts/kirkwood-nsa310.dts b/arch/arm/boot/dts/kirkwood-nsa310.dts index 3a178cf..a7412b9 100644 --- a/arch/arm/boot/dts/kirkwood-nsa310.dts +++ b/arch/arm/boot/dts/kirkwood-nsa310.dts @@ -117,7 +117,6 @@ }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-openblocks_a6.dts b/arch/arm/boot/dts/kirkwood-openblocks_a6.dts index ede7fe0d..d27f724 100644 --- a/arch/arm/boot/dts/kirkwood-openblocks_a6.dts +++ b/arch/arm/boot/dts/kirkwood-openblocks_a6.dts @@ -18,12 +18,10 @@ ocp@f1000000 { serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; serial@12100 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood-topkick.dts b/arch/arm/boot/dts/kirkwood-topkick.dts index 842ff95..66eb45b 100644 --- a/arch/arm/boot/dts/kirkwood-topkick.dts +++ b/arch/arm/boot/dts/kirkwood-topkick.dts @@ -108,7 +108,6 @@ }; serial@12000 { - clock-frequency = <200000000>; status = "ok"; }; diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index 2c738d9..19709fb 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -57,7 +57,6 @@ reg-shift = <2>; interrupts = <33>; clocks = <&gate_clk 7>; - /* set clock-frequency in board dts */ status = "disabled"; }; @@ -67,7 +66,6 @@ reg-shift = <2>; interrupts = <34>; clocks = <&gate_clk 7>; - /* set clock-frequency in board dts */ status = "disabled"; }; -- cgit v1.1 From 7bf5b408b419fc849578e6e9fbd221bf43638eb6 Mon Sep 17 00:00:00 2001 From: Sebastian Hesselbarth Date: Wed, 30 Jan 2013 21:29:58 +0100 Subject: ARM: kirkwood: fix to retain gbe MAC addresses for DT kernels The ethernet controller used on kirkwood looses its MAC address register contents when the corresponding clock is gated. As soon as mv643xx_eth is built as module, the clock gets gated and when loading the module, the MAC address is gone. Proper DT support for the mv643xx_eth driver is expected soon, so we add a workaround to always enable ge0/ge1 clocks on kirkwood. This workaround is also already used on non-DT kirkwood kernels. Reported-by: Simon Baatz Signed-off-by: Sebastian Hesselbarth Tested-by: Simon Baatz Cc: Signed-off-by: Jason Cooper --- arch/arm/mach-kirkwood/board-dt.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 2e73e9d..d367aa6 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -41,16 +41,12 @@ static void __init kirkwood_legacy_clk_init(void) struct device_node *np = of_find_compatible_node( NULL, NULL, "marvell,kirkwood-gating-clock"); - struct of_phandle_args clkspec; + struct clk *clk; clkspec.np = np; clkspec.args_count = 1; - clkspec.args[0] = CGC_BIT_GE0; - orion_clkdev_add(NULL, "mv643xx_eth_port.0", - of_clk_get_from_provider(&clkspec)); - clkspec.args[0] = CGC_BIT_PEX0; orion_clkdev_add("0", "pcie", of_clk_get_from_provider(&clkspec)); @@ -59,9 +55,24 @@ static void __init kirkwood_legacy_clk_init(void) orion_clkdev_add("1", "pcie", of_clk_get_from_provider(&clkspec)); - clkspec.args[0] = CGC_BIT_GE1; - orion_clkdev_add(NULL, "mv643xx_eth_port.1", + clkspec.args[0] = CGC_BIT_SDIO; + orion_clkdev_add(NULL, "mvsdio", of_clk_get_from_provider(&clkspec)); + + /* + * The ethernet interfaces forget the MAC address assigned by + * u-boot if the clocks are turned off. Until proper DT support + * is available we always enable them for now. + */ + clkspec.args[0] = CGC_BIT_GE0; + clk = of_clk_get_from_provider(&clkspec); + orion_clkdev_add(NULL, "mv643xx_eth_port.0", clk); + clk_prepare_enable(clk); + + clkspec.args[0] = CGC_BIT_GE1; + clk = of_clk_get_from_provider(&clkspec); + orion_clkdev_add(NULL, "mv643xx_eth_port.1", clk); + clk_prepare_enable(clk); } static void __init kirkwood_of_clk_init(void) -- cgit v1.1 From de88747f514a4e0cca416a8871de2302f4f77790 Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sun, 3 Feb 2013 11:34:26 +0100 Subject: gpio: mvebu: Add clk support to prevent lockup The kirkwood SoC GPIO cores use the runit clock. Add code to clk_prepare_enable() runit, otherwise there is a danger of locking up the SoC by accessing the GPIO registers when runit clock is not ticking. Reported-by: Simon Baatz Signed-off-by: Andrew Lunn Tested-by: Simon Baatz Acked-by: Linus Walleij Cc: Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 2 ++ drivers/gpio/gpio-mvebu.c | 7 +++++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index 19709fb..cf8e892 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -38,6 +38,7 @@ interrupt-controller; #interrupt-cells = <2>; interrupts = <35>, <36>, <37>, <38>; + clocks = <&gate_clk 7>; }; gpio1: gpio@10140 { @@ -49,6 +50,7 @@ interrupt-controller; #interrupt-cells = <2>; interrupts = <39>, <40>, <41>; + clocks = <&gate_clk 7>; }; serial@12000 { diff --git a/drivers/gpio/gpio-mvebu.c b/drivers/gpio/gpio-mvebu.c index 7472182..61a6fde 100644 --- a/drivers/gpio/gpio-mvebu.c +++ b/drivers/gpio/gpio-mvebu.c @@ -42,6 +42,7 @@ #include #include #include +#include #include /* @@ -496,6 +497,7 @@ static int mvebu_gpio_probe(struct platform_device *pdev) struct resource *res; struct irq_chip_generic *gc; struct irq_chip_type *ct; + struct clk *clk; unsigned int ngpios; int soc_variant; int i, cpu, id; @@ -529,6 +531,11 @@ static int mvebu_gpio_probe(struct platform_device *pdev) return id; } + clk = devm_clk_get(&pdev->dev, NULL); + /* Not all SoCs require a clock.*/ + if (!IS_ERR(clk)) + clk_prepare_enable(clk); + mvchip->soc_variant = soc_variant; mvchip->chip.label = dev_name(&pdev->dev); mvchip->chip.dev = &pdev->dev; -- cgit v1.1 From 89c58c198b252f2bc20657fdd72a2aea788c435c Mon Sep 17 00:00:00 2001 From: Andrew Lunn Date: Sun, 3 Feb 2013 12:32:06 +0100 Subject: rtc: rtc-mv: Add support for clk to avoid lockups The Marvell RTC on Kirkwood makes use of the runit clock. Ensure the driver clk_prepare_enable() this clock, otherwise there is a danger the SoC will lockup when accessing RTC registers with the clock disabled. Reported-by: Simon Baatz Signed-off-by: Andrew Lunn Tested-by: Simon Baatz Cc: Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood.dtsi | 1 + drivers/rtc/rtc-mv.c | 28 ++++++++++++++++++++++++---- 2 files changed, 25 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/kirkwood.dtsi b/arch/arm/boot/dts/kirkwood.dtsi index cf8e892..fada7e6 100644 --- a/arch/arm/boot/dts/kirkwood.dtsi +++ b/arch/arm/boot/dts/kirkwood.dtsi @@ -75,6 +75,7 @@ compatible = "marvell,kirkwood-rtc", "marvell,orion-rtc"; reg = <0x10300 0x20>; interrupts = <53>; + clocks = <&gate_clk 7>; }; spi@10600 { diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c index 57233c8..8f87fec 100644 --- a/drivers/rtc/rtc-mv.c +++ b/drivers/rtc/rtc-mv.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -41,6 +42,7 @@ struct rtc_plat_data { struct rtc_device *rtc; void __iomem *ioaddr; int irq; + struct clk *clk; }; static int mv_rtc_set_time(struct device *dev, struct rtc_time *tm) @@ -221,6 +223,7 @@ static int mv_rtc_probe(struct platform_device *pdev) struct rtc_plat_data *pdata; resource_size_t size; u32 rtc_time; + int ret = 0; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) @@ -239,11 +242,17 @@ static int mv_rtc_probe(struct platform_device *pdev) if (!pdata->ioaddr) return -ENOMEM; + pdata->clk = devm_clk_get(&pdev->dev, NULL); + /* Not all SoCs require a clock.*/ + if (!IS_ERR(pdata->clk)) + clk_prepare_enable(pdata->clk); + /* make sure the 24 hours mode is enabled */ rtc_time = readl(pdata->ioaddr + RTC_TIME_REG_OFFS); if (rtc_time & RTC_HOURS_12H_MODE) { dev_err(&pdev->dev, "24 Hours mode not supported.\n"); - return -EINVAL; + ret = -EINVAL; + goto out; } /* make sure it is actually functional */ @@ -252,7 +261,8 @@ static int mv_rtc_probe(struct platform_device *pdev) rtc_time = readl(pdata->ioaddr + RTC_TIME_REG_OFFS); if (rtc_time == 0x01000000) { dev_err(&pdev->dev, "internal RTC not ticking\n"); - return -ENODEV; + ret = -ENODEV; + goto out; } } @@ -268,8 +278,10 @@ static int mv_rtc_probe(struct platform_device *pdev) } else pdata->rtc = rtc_device_register(pdev->name, &pdev->dev, &mv_rtc_ops, THIS_MODULE); - if (IS_ERR(pdata->rtc)) - return PTR_ERR(pdata->rtc); + if (IS_ERR(pdata->rtc)) { + ret = PTR_ERR(pdata->rtc); + goto out; + } if (pdata->irq >= 0) { writel(0, pdata->ioaddr + RTC_ALARM_INTERRUPT_MASK_REG_OFFS); @@ -282,6 +294,11 @@ static int mv_rtc_probe(struct platform_device *pdev) } return 0; +out: + if (!IS_ERR(pdata->clk)) + clk_disable_unprepare(pdata->clk); + + return ret; } static int __exit mv_rtc_remove(struct platform_device *pdev) @@ -292,6 +309,9 @@ static int __exit mv_rtc_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); rtc_device_unregister(pdata->rtc); + if (!IS_ERR(pdata->clk)) + clk_disable_unprepare(pdata->clk); + return 0; } -- cgit v1.1 From f3ae1ae901d05b26d42e7f9cb3b2fb45ee478511 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 5 Mar 2013 21:17:17 +0100 Subject: ARM: dove: drop "select COMMON_CLK_DOVE" Commit 5b03df9ace680d7cdd34a69dfd85ca5f74159d18 ("ARM: dove: switch to DT clock providers") added "select COMMON_CLK_DOVE" to Marvell Dove's Kconfig entry. But there's no Kconfig symbol COMMON_CLK_DOVE, which makes this select statement a nop. It's probably a leftover of some experimental code that never hit mainline. Drop it. Signed-off-by: Paul Bolle Signed-off-by: Jason Cooper --- arch/arm/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5b71469..0c990b7 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -556,7 +556,6 @@ config ARCH_IXP4XX config ARCH_DOVE bool "Marvell Dove" select ARCH_REQUIRE_GPIOLIB - select COMMON_CLK_DOVE select CPU_V7 select GENERIC_CLOCKEVENTS select MIGHT_HAVE_PCI -- cgit v1.1 From e822f75d848e29a034da7d238a9d5325cff1e9fe Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 5 Mar 2013 10:55:04 +0100 Subject: arm: mvebu: enable the USB ports on Armada 370 Reference Design board This patch modifies the Armada 370 Reference Design DTS file to enable support for the two USB ports found on this board. Signed-off-by: Florian Fainelli Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-rd.dts | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm/boot/dts/armada-370-rd.dts b/arch/arm/boot/dts/armada-370-rd.dts index f8e4855..070bba4 100644 --- a/arch/arm/boot/dts/armada-370-rd.dts +++ b/arch/arm/boot/dts/armada-370-rd.dts @@ -64,5 +64,13 @@ status = "okay"; /* No CD or WP GPIOs */ }; + + usb@d0050000 { + status = "okay"; + }; + + usb@d0051000 { + status = "okay"; + }; }; }; -- cgit v1.1 From 85c0c13dcdbb2d7cb375e6ace711e3655dd7a4dd Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Fri, 8 Mar 2013 12:13:17 +0100 Subject: ARM: Dove: add RTC device node MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The commit: 48be9ac ARM: Dove: split legacy and DT setup removed the RTC initialization. This patch re-enables the RTC via the DT. Signed-off-by: Jean-François Moine Signed-off-by: Jason Cooper --- arch/arm/boot/dts/dove.dtsi | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/boot/dts/dove.dtsi b/arch/arm/boot/dts/dove.dtsi index 67dbe20..f7509ca 100644 --- a/arch/arm/boot/dts/dove.dtsi +++ b/arch/arm/boot/dts/dove.dtsi @@ -197,6 +197,11 @@ status = "disabled"; }; + rtc@d8500 { + compatible = "marvell,orion-rtc"; + reg = <0xd8500 0x20>; + }; + crypto: crypto@30000 { compatible = "marvell,orion-crypto"; reg = <0x30000 0x10000>, -- cgit v1.1 From e366154f70c54dee3665d1c0f780007e514412f3 Mon Sep 17 00:00:00 2001 From: Heikki Krogerus Date: Wed, 6 Mar 2013 11:23:33 +0100 Subject: arm: mvebu: Reduce reg-io-width with UARTs Setting the reg-io-width to 1 byte represents more accurate description of the HW. This will fix an issue where UART driver causes kernel panic during bootup. Gregory CLEMENT traced the issue to autoconfig() in 8250.c, where the existence of FIFO is checked from UART_IIR register. The register is now read as 32-bit value as the reg-io-width is set to 4-bytes. The retuned value seems to contain bogus data for bits 31:8, causing the issue. Signed-off-by: Heikki Krogerus Cc: Gregory CLEMENT Cc: Masami Hiramatsu Tested-by: Gregory CLEMENT Acked-by: Gregory CLEMENT Tested-by: Masami Hiramatsu Tested-by: Thomas Petazzoni Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-xp.dtsi | 4 ++-- arch/arm/boot/dts/armada-xp.dtsi | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi index 6f1acc7..99afca4 100644 --- a/arch/arm/boot/dts/armada-370-xp.dtsi +++ b/arch/arm/boot/dts/armada-370-xp.dtsi @@ -54,7 +54,7 @@ reg = <0xd0012000 0x100>; reg-shift = <2>; interrupts = <41>; - reg-io-width = <4>; + reg-io-width = <1>; status = "disabled"; }; serial@d0012100 { @@ -62,7 +62,7 @@ reg = <0xd0012100 0x100>; reg-shift = <2>; interrupts = <42>; - reg-io-width = <4>; + reg-io-width = <1>; status = "disabled"; }; diff --git a/arch/arm/boot/dts/armada-xp.dtsi b/arch/arm/boot/dts/armada-xp.dtsi index 1443949..ca00d83 100644 --- a/arch/arm/boot/dts/armada-xp.dtsi +++ b/arch/arm/boot/dts/armada-xp.dtsi @@ -46,7 +46,7 @@ reg = <0xd0012200 0x100>; reg-shift = <2>; interrupts = <43>; - reg-io-width = <4>; + reg-io-width = <1>; status = "disabled"; }; serial@d0012300 { @@ -54,7 +54,7 @@ reg = <0xd0012300 0x100>; reg-shift = <2>; interrupts = <44>; - reg-io-width = <4>; + reg-io-width = <1>; status = "disabled"; }; -- cgit v1.1 From 217bef3d37a9180bebd1953dffb6f9a3c77c557f Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 6 Mar 2013 11:23:34 +0100 Subject: arm: plat-orion: fix address decoding when > 4GB is used During the system initialization, the orion_setup_cpu_mbus_target() function reads the SDRAM address decoding registers to find out how many chip-selects of SDRAM have been enabled, and builds a small array with one entry per chip-select. This array is then used by device drivers (XOR, Ethernet, etc.) to configure their own address decoding windows to the SDRAM. However, devices can only access the first 32 bits of the physical memory. Even though LPAE is not supported for now, some Marvell boards are now showing up with 8 GB of RAM, configured using two SDRAM address decoding windows: the first covering the first 4 GB, the second covering the last 4 GB. The array built by orion_setup_cpu_mbus_target() has therefore two entries, and device drivers try to set up two address decoding windows to the SDRAM. However, in the device registers for the address decoding, the base address is only 32 bits, so those two windows overlap each other, and the devices do not work at all. This patch makes sure that the array built by orion_setup_cpu_mbus_target() only contains the SDRAM decoding windows that correspond to the first 4 GB of the memory. To do that, it ignores the SDRAM decoding windows for which the 4 low-order bits are not zero (the 4 low-order bits of the base register are used to store bits 32:35 of the base address, so they actually indicate whether the base address is above 4 GB). This patch allows the newly introduced armada-xp-gp board to properly operate when it is mounted with more than 4 GB of RAM. Without that, all devices doing DMA (for example XOR and Ethernet) do not work at all. Signed-off-by: Thomas Petazzoni Tested-by: Ezequiel Garcia Signed-off-by: Jason Cooper --- arch/arm/plat-orion/addr-map.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/plat-orion/addr-map.c b/arch/arm/plat-orion/addr-map.c index febe386..807ac8e 100644 --- a/arch/arm/plat-orion/addr-map.c +++ b/arch/arm/plat-orion/addr-map.c @@ -157,9 +157,12 @@ void __init orion_setup_cpu_mbus_target(const struct orion_addr_map_cfg *cfg, u32 size = readl(ddr_window_cpu_base + DDR_SIZE_CS_OFF(i)); /* - * Chip select enabled? + * We only take care of entries for which the chip + * select is enabled, and that don't have high base + * address bits set (devices can only access the first + * 32 bits of the memory). */ - if (size & 1) { + if ((size & 1) && !(base & 0xF)) { struct mbus_dram_window *w; w = &orion_mbus_dram_info.cs[cs++]; -- cgit v1.1 From 1b72b78fda0433a7e115bc2d78603fde65fae0e7 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 6 Mar 2013 11:23:35 +0100 Subject: arm: mvebu: fix address-cells in mpic DT node There is no need to have a #address-cells property in the MPIC Device Tree node, and more than that, having it confuses the of_irq_map_raw() logic, which will be used by the Marvell PCIe driver. Signed-off-by: Thomas Petazzoni Signed-off-by: Jason Cooper --- arch/arm/boot/dts/armada-370-xp.dtsi | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/boot/dts/armada-370-xp.dtsi b/arch/arm/boot/dts/armada-370-xp.dtsi index 99afca4..5b70820 100644 --- a/arch/arm/boot/dts/armada-370-xp.dtsi +++ b/arch/arm/boot/dts/armada-370-xp.dtsi @@ -31,7 +31,6 @@ mpic: interrupt-controller@d0020000 { compatible = "marvell,mpic"; #interrupt-cells = <1>; - #address-cells = <1>; #size-cells = <1>; interrupt-controller; }; -- cgit v1.1 From b2d57222b0f0963258a47da0ea7f0ec451c64712 Mon Sep 17 00:00:00 2001 From: Thomas Petazzoni Date: Wed, 6 Mar 2013 11:23:36 +0100 Subject: arm: mach-orion5x: fix typo in compatible string of a .dts file The orion5x-lacie-ethernet-disk-mini-v2.dts file was using "marvell-orion5x-88f5182" as a compatible string, while it should have been "marvell,orion5x-88f5182". Signed-off-by: Thomas Petazzoni Signed-off-by: Jason Cooper --- arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts index 5a3a58b..0077fc8 100644 --- a/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts +++ b/arch/arm/boot/dts/orion5x-lacie-ethernet-disk-mini-v2.dts @@ -11,7 +11,7 @@ / { model = "LaCie Ethernet Disk mini V2"; - compatible = "lacie,ethernet-disk-mini-v2", "marvell-orion5x-88f5182", "marvell,orion5x"; + compatible = "lacie,ethernet-disk-mini-v2", "marvell,orion5x-88f5182", "marvell,orion5x"; memory { reg = <0x00000000 0x4000000>; /* 64 MB */ -- cgit v1.1 From e1082f45f1e2bbf6e25f6b614fc6616ebf709d19 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 8 Mar 2013 12:43:26 -0800 Subject: ipc: fix potential oops when src msg > 4k w/ MSG_COPY If the src msg is > 4k, then dest->next points to the next allocated segment; resetting it just prior to dereferencing is bad. Signed-off-by: Peter Hurley Acked-by: Stanislav Kinsbursky Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msgutil.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/ipc/msgutil.c b/ipc/msgutil.c index ebfcbfa..5df8e4b 100644 --- a/ipc/msgutil.c +++ b/ipc/msgutil.c @@ -117,9 +117,6 @@ struct msg_msg *copy_msg(struct msg_msg *src, struct msg_msg *dst) if (alen > DATALEN_MSG) alen = DATALEN_MSG; - dst->next = NULL; - dst->security = NULL; - memcpy(dst + 1, src + 1, alen); len -= alen; -- cgit v1.1 From 88b9e456b1649722673ffa147914299799dc9041 Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Fri, 8 Mar 2013 12:43:27 -0800 Subject: ipc: don't allocate a copy larger than max When MSG_COPY is set, a duplicate message must be allocated for the copy before locking the queue. However, the copy could not be larger than was sent which is limited to msg_ctlmax. Signed-off-by: Peter Hurley Acked-by: Stanislav Kinsbursky Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/msg.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/ipc/msg.c b/ipc/msg.c index 950572f..31cd1bf 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -820,15 +820,17 @@ long do_msgrcv(int msqid, void __user *buf, size_t bufsz, long msgtyp, struct msg_msg *copy = NULL; unsigned long copy_number = 0; + ns = current->nsproxy->ipc_ns; + if (msqid < 0 || (long) bufsz < 0) return -EINVAL; if (msgflg & MSG_COPY) { - copy = prepare_copy(buf, bufsz, msgflg, &msgtyp, ©_number); + copy = prepare_copy(buf, min_t(size_t, bufsz, ns->msg_ctlmax), + msgflg, &msgtyp, ©_number); if (IS_ERR(copy)) return PTR_ERR(copy); } mode = convert_mode(&msgtyp, msgflg); - ns = current->nsproxy->ipc_ns; msq = msg_lock_check(ns, msqid); if (IS_ERR(msq)) { -- cgit v1.1 From 5ca3957510b9fc2a14d3647db518014842f9a2b4 Mon Sep 17 00:00:00 2001 From: Hillf Danton Date: Fri, 8 Mar 2013 12:43:28 -0800 Subject: mm/mempolicy.c: fix wrong sp_node insertion n->end is accessed in sp_insert(). Thus it should be update before calling sp_insert(). This mistake may make kernel panic. Signed-off-by: Hillf Danton Signed-off-by: KOSAKI Motohiro Cc: Sasha Levin Cc: Hugh Dickins Cc: Mel Gorman Cc: Dave Jones Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempolicy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 31d2663..868d08f 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2391,8 +2391,8 @@ restart: *mpol_new = *n->policy; atomic_set(&mpol_new->refcnt, 1); sp_node_init(n_new, n->end, end, mpol_new); - sp_insert(sp, n_new); n->end = start; + sp_insert(sp, n_new); n_new = NULL; mpol_new = NULL; break; -- cgit v1.1 From 7880639c3e4fde5953ff243ee52204ddc5af641b Mon Sep 17 00:00:00 2001 From: KOSAKI Motohiro Date: Fri, 8 Mar 2013 12:43:29 -0800 Subject: mm/mempolicy.c: fix sp_node_init() argument ordering Currently, n_new is wrongly initialized. start and end parameter are inverted. Let's fix it. Signed-off-by: KOSAKI Motohiro Cc: Hillf Danton Cc: Sasha Levin Cc: Hugh Dickins Cc: Mel Gorman Cc: Dave Jones Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempolicy.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 868d08f..7431001 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2390,7 +2390,7 @@ restart: *mpol_new = *n->policy; atomic_set(&mpol_new->refcnt, 1); - sp_node_init(n_new, n->end, end, mpol_new); + sp_node_init(n_new, end, n->end, mpol_new); n->end = start; sp_insert(sp, n_new); n_new = NULL; -- cgit v1.1 From 2e1c9b2867656ff9a469d23e1dfe90cf77ec0c72 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 8 Mar 2013 12:43:30 -0800 Subject: idr: remove WARN_ON_ONCE() on negative IDs idr_find(), idr_remove() and idr_replace() used to silently ignore the sign bit and perform lookup with the rest of the bits. The weird behavior has been changed such that negative IDs are treated as invalid. As the behavior change was subtle, WARN_ON_ONCE() was added in the hope of determining who's calling idr functions with negative IDs so that they can be examined for problems. Up until now, all two reported cases are ID number coming directly from userland and getting fed into idr_find() and the warnings seem to cause more problems than being helpful. Drop the WARN_ON_ONCE()s. Signed-off-by: Tejun Heo Reported-by: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/lib/idr.c b/lib/idr.c index 73f4d53..00739aa 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -569,8 +569,7 @@ void idr_remove(struct idr *idp, int id) struct idr_layer *p; struct idr_layer *to_free; - /* see comment in idr_find_slowpath() */ - if (WARN_ON_ONCE(id < 0)) + if (id < 0) return; sub_remove(idp, (idp->layers - 1) * IDR_BITS, id); @@ -667,15 +666,7 @@ void *idr_find_slowpath(struct idr *idp, int id) int n; struct idr_layer *p; - /* - * If @id is negative, idr_find() used to ignore the sign bit and - * performed lookup with the rest of bits, which is weird and can - * lead to very obscure bugs. We're now returning NULL for all - * negative IDs but just in case somebody was depending on the sign - * bit being ignored, let's trigger WARN_ON_ONCE() so that they can - * be detected and fixed. WARN_ON_ONCE() can later be removed. - */ - if (WARN_ON_ONCE(id < 0)) + if (id < 0) return NULL; p = rcu_dereference_raw(idp->top); @@ -824,8 +815,7 @@ void *idr_replace(struct idr *idp, void *ptr, int id) int n; struct idr_layer *p, *old_p; - /* see comment in idr_find_slowpath() */ - if (WARN_ON_ONCE(id < 0)) + if (id < 0) return ERR_PTR(-EINVAL); p = idp->top; -- cgit v1.1 From dc893e19b5800d7743fb58235877bfa9091805ff Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 8 Mar 2013 12:43:31 -0800 Subject: Revert parts of "hlist: drop the node parameter from iterators" Commit b67bfe0d42ca ("hlist: drop the node parameter from iterators") did a lot of nice changes but also contains two small hunks that seem to have slipped in accidentally and have no apparent connection to the intent of the patch. This reverts the two extraneous changes. Signed-off-by: Arnd Bergmann Cc: Peter Senna Tschudin Cc: Paul E. McKenney Cc: Sasha Levin Cc: Thomas Gleixner Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/smpboot.c | 2 +- net/9p/trans_virtio.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/smpboot.c b/kernel/smpboot.c index 25d3d8b..8eaed9a 100644 --- a/kernel/smpboot.c +++ b/kernel/smpboot.c @@ -131,7 +131,7 @@ static int smpboot_thread_fn(void *data) continue; } - //BUG_ON(td->cpu != smp_processor_id()); + BUG_ON(td->cpu != smp_processor_id()); /* Check for state change setup */ switch (td->status) { diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 74dea37..de2e950 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -655,7 +655,7 @@ static struct p9_trans_module p9_virtio_trans = { .create = p9_virtio_create, .close = p9_virtio_close, .request = p9_virtio_request, - //.zc_request = p9_virtio_zc_request, + .zc_request = p9_virtio_zc_request, .cancel = p9_virtio_cancel, /* * We leave one entry for input and one entry for response -- cgit v1.1 From a40e7cf8f06b4e322ba902e4e9f6a6b0c2daa907 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 8 Mar 2013 12:43:32 -0800 Subject: dmi_scan: fix missing check for _DMI_ signature in smbios_present() Commit 9f9c9cbb6057 ("drivers/firmware/dmi_scan.c: fetch dmi version from SMBIOS if it exists") hoisted the check for "_DMI_" into dmi_scan_machine(), which means that we don't bother to check for "_DMI_" at offset 16 in an SMBIOS entry. smbios_present() may also call dmi_present() for an address where we found "_SM_", if it failed further validation. Check for "_DMI_" in smbios_present() before calling dmi_present(). [akpm@linux-foundation.org: fix build] Signed-off-by: Ben Hutchings Reported-by: Tim McGrath Tested-by: Tim Mcgrath Cc: Zhenzhong Duan Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/firmware/dmi_scan.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index 982f1f5..4cd392d 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -442,7 +442,6 @@ static int __init dmi_present(const char __iomem *p) static int __init smbios_present(const char __iomem *p) { u8 buf[32]; - int offset = 0; memcpy_fromio(buf, p, 32); if ((buf[5] < 32) && dmi_checksum(buf, buf[5])) { @@ -461,9 +460,9 @@ static int __init smbios_present(const char __iomem *p) dmi_ver = 0x0206; break; } - offset = 16; + return memcmp(p + 16, "_DMI_", 5) || dmi_present(p + 16); } - return dmi_present(buf + offset); + return 1; } void __init dmi_scan_machine(void) -- cgit v1.1 From d8fc16a825eb7780db71268a8502fb3e6af95753 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 8 Mar 2013 12:43:34 -0800 Subject: ksm: fix m68k build: only NUMA needs pfn_to_nid A CONFIG_DISCONTIGMEM=y m68k config gave mm/ksm.c: In function `get_kpfn_nid': mm/ksm.c:492: error: implicit declaration of function `pfn_to_nid' linux/mmzone.h declares it for CONFIG_SPARSEMEM and CONFIG_FLATMEM, but expects the arch's asm/mmzone.h to declare it for CONFIG_DISCONTIGMEM (see arch/mips/include/asm/mmzone.h for example). Or perhaps it is only expected when CONFIG_NUMA=y: too much of a maze, and m68k got away without it so far, so fix the build in mm/ksm.c. Signed-off-by: Hugh Dickins Reported-by: Geert Uytterhoeven Cc: Petr Holasek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/ksm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/ksm.c b/mm/ksm.c index 85bfd4c..b6afe0c 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -489,7 +489,7 @@ out: page = NULL; */ static inline int get_kpfn_nid(unsigned long kpfn) { - return ksm_merge_across_nodes ? 0 : pfn_to_nid(kpfn); + return ksm_merge_across_nodes ? 0 : NUMA(pfn_to_nid(kpfn)); } static void remove_node_from_stable_tree(struct stable_node *stable_node) -- cgit v1.1 From 755727b7fb1e0ebe46824159107749cf635d43b1 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Fri, 8 Mar 2013 12:43:35 -0800 Subject: Randy has moved Update email address and CREDITS info. xenotime.net is defunct. Signed-off-by: Randy Dunlap Cc: Harry Wei Cc: Keiichi KII Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- CREDITS | 6 +++--- Documentation/SubmittingPatches | 3 +-- Documentation/printk-formats.txt | 2 +- 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/CREDITS b/CREDITS index 948e0fb..78163cb 100644 --- a/CREDITS +++ b/CREDITS @@ -953,11 +953,11 @@ S: Blacksburg, Virginia 24061 S: USA N: Randy Dunlap -E: rdunlap@xenotime.net -W: http://www.xenotime.net/linux/linux.html -W: http://www.linux-usb.org +E: rdunlap@infradead.org +W: http://www.infradead.org/~rdunlap/ D: Linux-USB subsystem, USB core/UHCI/printer/storage drivers D: x86 SMP, ACPI, bootflag hacking +D: documentation, builds S: (ask for current address) S: USA diff --git a/Documentation/SubmittingPatches b/Documentation/SubmittingPatches index c379a2a..aa0c1e6 100644 --- a/Documentation/SubmittingPatches +++ b/Documentation/SubmittingPatches @@ -60,8 +60,7 @@ own source tree. For example: "dontdiff" is a list of files which are generated by the kernel during the build process, and should be ignored in any diff(1)-generated patch. The "dontdiff" file is included in the kernel tree in -2.6.12 and later. For earlier kernel versions, you can get it -from . +2.6.12 and later. Make sure your patch does not include any extra files which do not belong in a patch submission. Make sure to review your patch -after- diff --git a/Documentation/printk-formats.txt b/Documentation/printk-formats.txt index e8a6aa4..6e95356 100644 --- a/Documentation/printk-formats.txt +++ b/Documentation/printk-formats.txt @@ -170,5 +170,5 @@ Reminder: sizeof() result is of type size_t. Thank you for your cooperation and attention. -By Randy Dunlap and +By Randy Dunlap and Andrew Murray -- cgit v1.1 From 15cf17d26e08ee95c2e392a3a71f55d32e99e971 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Fri, 8 Mar 2013 12:43:36 -0800 Subject: memcg: initialize kmem-cache destroying work earlier Fix a warning from lockdep caused by calling cancel_work_sync() for uninitialized struct work. This path has been triggered by destructon kmem-cache hierarchy via destroying its root kmem-cache. cache ffff88003c072d80 obj ffff88003b410000 cache ffff88003c072d80 obj ffff88003b924000 cache ffff88003c20bd40 INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 2825, comm: insmod Tainted: G O 3.9.0-rc1-next-20130307+ #611 Call Trace: __lock_acquire+0x16a2/0x1cb0 lock_acquire+0x8a/0x120 flush_work+0x38/0x2a0 __cancel_work_timer+0x89/0xf0 cancel_work_sync+0xb/0x10 kmem_cache_destroy_memcg_children+0x81/0xb0 kmem_cache_destroy+0xf/0xe0 init_module+0xcb/0x1000 [kmem_test] do_one_initcall+0x11a/0x170 load_module+0x19b0/0x2320 SyS_init_module+0xc6/0xf0 system_call_fastpath+0x16/0x1b Example module to demonstrate: #include #include #include #include int __init mod_init(void) { int size = 256; struct kmem_cache *cache; void *obj; struct page *page; cache = kmem_cache_create("kmem_cache_test", size, size, 0, NULL); if (!cache) return -ENOMEM; printk("cache %p\n", cache); obj = kmem_cache_alloc(cache, GFP_KERNEL); if (obj) { page = virt_to_head_page(obj); printk("obj %p cache %p\n", obj, page->slab_cache); kmem_cache_free(cache, obj); } flush_scheduled_work(); obj = kmem_cache_alloc(cache, GFP_KERNEL); if (obj) { page = virt_to_head_page(obj); printk("obj %p cache %p\n", obj, page->slab_cache); kmem_cache_free(cache, obj); } kmem_cache_destroy(cache); return -EBUSY; } module_init(mod_init); MODULE_LICENSE("GPL"); Signed-off-by: Konstantin Khlebnikov Cc: Glauber Costa Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 53b8201..2b55222 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3012,6 +3012,8 @@ void memcg_update_array_size(int num) memcg_limited_groups_array_size = memcg_caches_array_size(num); } +static void kmem_cache_destroy_work_func(struct work_struct *w); + int memcg_update_cache_size(struct kmem_cache *s, int num_groups) { struct memcg_cache_params *cur_params = s->memcg_params; @@ -3031,6 +3033,8 @@ int memcg_update_cache_size(struct kmem_cache *s, int num_groups) return -ENOMEM; } + INIT_WORK(&s->memcg_params->destroy, + kmem_cache_destroy_work_func); s->memcg_params->is_root_cache = true; /* @@ -3078,6 +3082,8 @@ int memcg_register_cache(struct mem_cgroup *memcg, struct kmem_cache *s, if (!s->memcg_params) return -ENOMEM; + INIT_WORK(&s->memcg_params->destroy, + kmem_cache_destroy_work_func); if (memcg) { s->memcg_params->memcg = memcg; s->memcg_params->root_cache = root_cache; @@ -3358,8 +3364,6 @@ static void mem_cgroup_destroy_all_caches(struct mem_cgroup *memcg) list_for_each_entry(params, &memcg->memcg_slab_caches, list) { cachep = memcg_params_to_cache(params); cachep->memcg_params->dead = true; - INIT_WORK(&cachep->memcg_params->destroy, - kmem_cache_destroy_work_func); schedule_work(&cachep->memcg_params->destroy); } mutex_unlock(&memcg->slab_caches_mutex); -- cgit v1.1 From c3d6b628395fe6ec3442a83ddf02334c54867d43 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 8 Mar 2013 12:43:37 -0800 Subject: alpha: boot: fix build breakage introduced by system.h disintegration Commit ec2212088c42 ("Disintegrate asm/system.h for Alpha") removed the system.h include from boot/head.S, which puts the PAL_* asm constants out of scope. Include so we can get building again. Signed-off-by: Will Deacon Cc: David Rusling Cc: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/boot/head.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/alpha/boot/head.S b/arch/alpha/boot/head.S index b06812b..8efb266 100644 --- a/arch/alpha/boot/head.S +++ b/arch/alpha/boot/head.S @@ -4,6 +4,7 @@ * initial bootloader stuff.. */ +#include .set noreorder .globl __start -- cgit v1.1 From eb2834285cf172856cd12f66892fc7467935ebed Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Fri, 8 Mar 2013 15:18:28 -0800 Subject: workqueue: fix possible pool stall bug in wq_unbind_fn() Since multiple pools per cpu have been introduced, wq_unbind_fn() has a subtle bug which may theoretically stall work item processing. The problem is two-fold. * wq_unbind_fn() depends on the worker executing wq_unbind_fn() itself to start unbound chain execution, which works fine when there was only single pool. With multiple pools, only the pool which is running wq_unbind_fn() - the highpri one - is guaranteed to have such kick-off. The other pool could stall when its busy workers block. * The current code is setting WORKER_UNBIND / POOL_DISASSOCIATED of the two pools in succession without initiating work execution inbetween. Because setting the flags requires grabbing assoc_mutex which is held while new workers are created, this could lead to stalls if a pool's manager is waiting for the previous pool's work items to release memory. This is almost purely theoretical tho. Update wq_unbind_fn() such that it sets WORKER_UNBIND / POOL_DISASSOCIATED, goes over schedule() and explicitly kicks off execution for a pool and then moves on to the next one. tj: Updated comments and description. Signed-off-by: Lai Jiangshan Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org --- kernel/workqueue.c | 44 +++++++++++++++++++++++++------------------- 1 file changed, 25 insertions(+), 19 deletions(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 81f2457..604801b 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -3446,28 +3446,34 @@ static void wq_unbind_fn(struct work_struct *work) spin_unlock_irq(&pool->lock); mutex_unlock(&pool->assoc_mutex); - } - /* - * Call schedule() so that we cross rq->lock and thus can guarantee - * sched callbacks see the %WORKER_UNBOUND flag. This is necessary - * as scheduler callbacks may be invoked from other cpus. - */ - schedule(); + /* + * Call schedule() so that we cross rq->lock and thus can + * guarantee sched callbacks see the %WORKER_UNBOUND flag. + * This is necessary as scheduler callbacks may be invoked + * from other cpus. + */ + schedule(); - /* - * Sched callbacks are disabled now. Zap nr_running. After this, - * nr_running stays zero and need_more_worker() and keep_working() - * are always true as long as the worklist is not empty. Pools on - * @cpu now behave as unbound (in terms of concurrency management) - * pools which are served by workers tied to the CPU. - * - * On return from this function, the current worker would trigger - * unbound chain execution of pending work items if other workers - * didn't already. - */ - for_each_std_worker_pool(pool, cpu) + /* + * Sched callbacks are disabled now. Zap nr_running. + * After this, nr_running stays zero and need_more_worker() + * and keep_working() are always true as long as the + * worklist is not empty. This pool now behaves as an + * unbound (in terms of concurrency management) pool which + * are served by workers tied to the pool. + */ atomic_set(&pool->nr_running, 0); + + /* + * With concurrency management just turned off, a busy + * worker blocking could lead to lengthy stalls. Kick off + * unbound chain execution of currently pending work items. + */ + spin_lock_irq(&pool->lock); + wake_up_worker(pool); + spin_unlock_irq(&pool->lock); + } } /* -- cgit v1.1 From 22dfab7fd7fd5a8a2c5556ca0a8fd35fc959abc8 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz Date: Thu, 7 Mar 2013 19:43:33 -0800 Subject: Input: atmel_mxt_ts - Support for touchpad variant This same driver can be used by atmel based touchscreens and touchpads (buttonpads). Platform data may specify a device is a touchpad using the is_tp flag. This will cause the driver to perform some touchpad specific initializations, such as: * register input device name "Atmel maXTouch Touchpad" instead of Touchscreen. * register BTN_LEFT & BTN_TOOL_* event types. * register axis resolution (as a fixed constant, for now) * register BUTTONPAD property * process GPIO buttons using reportid T19 Input event GPIO mapping is done by the platform data key_map array. key_map[x] should contain the KEY or BTN code to send when processing GPIOx from T19. To specify a GPIO as not an input source, populate with KEY_RESERVED, or 0. Signed-off-by: Daniel Kurtz Signed-off-by: Benson Leung Signed-off-by: Nick Dyer Tested-by: Olof Johansson Signed-off-by: Linus Torvalds --- drivers/input/touchscreen/atmel_mxt_ts.c | 64 +++++++++++++++++++++++++++++++- include/linux/i2c/atmel_mxt_ts.h | 5 +++ 2 files changed, 67 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index d04f810..8ed279c 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -181,6 +181,12 @@ #define MXT_FWRESET_TIME 175 /* msec */ +/* MXT_SPT_GPIOPWM_T19 field */ +#define MXT_GPIO0_MASK 0x04 +#define MXT_GPIO1_MASK 0x08 +#define MXT_GPIO2_MASK 0x10 +#define MXT_GPIO3_MASK 0x20 + /* Command to unlock bootloader */ #define MXT_UNLOCK_CMD_MSB 0xaa #define MXT_UNLOCK_CMD_LSB 0xdc @@ -212,6 +218,8 @@ /* Touchscreen absolute values */ #define MXT_MAX_AREA 0xff +#define MXT_PIXELS_PER_MM 20 + struct mxt_info { u8 family_id; u8 variant_id; @@ -243,6 +251,8 @@ struct mxt_data { const struct mxt_platform_data *pdata; struct mxt_object *object_table; struct mxt_info info; + bool is_tp; + unsigned int irq; unsigned int max_x; unsigned int max_y; @@ -251,6 +261,7 @@ struct mxt_data { u8 T6_reportid; u8 T9_reportid_min; u8 T9_reportid_max; + u8 T19_reportid; }; static bool mxt_object_readable(unsigned int type) @@ -502,6 +513,21 @@ static int mxt_write_object(struct mxt_data *data, return mxt_write_reg(data->client, reg + offset, val); } +static void mxt_input_button(struct mxt_data *data, struct mxt_message *message) +{ + struct input_dev *input = data->input_dev; + bool button; + int i; + + /* Active-low switch */ + for (i = 0; i < MXT_NUM_GPIO; i++) { + if (data->pdata->key_map[i] == KEY_RESERVED) + continue; + button = !(message->message[0] & MXT_GPIO0_MASK << i); + input_report_key(input, data->pdata->key_map[i], button); + } +} + static void mxt_input_touchevent(struct mxt_data *data, struct mxt_message *message, int id) { @@ -585,6 +611,9 @@ static irqreturn_t mxt_interrupt(int irq, void *dev_id) int id = reportid - data->T9_reportid_min; mxt_input_touchevent(data, &message, id); update_input = true; + } else if (message.reportid == data->T19_reportid) { + mxt_input_button(data, &message); + update_input = true; } else { mxt_dump_message(dev, &message); } @@ -764,6 +793,9 @@ static int mxt_get_object_table(struct mxt_data *data) data->T9_reportid_min = min_id; data->T9_reportid_max = max_id; break; + case MXT_SPT_GPIOPWM_T19: + data->T19_reportid = min_id; + break; } } @@ -777,7 +809,7 @@ static void mxt_free_object_table(struct mxt_data *data) data->T6_reportid = 0; data->T9_reportid_min = 0; data->T9_reportid_max = 0; - + data->T19_reportid = 0; } static int mxt_initialize(struct mxt_data *data) @@ -1115,9 +1147,13 @@ static int mxt_probe(struct i2c_client *client, goto err_free_mem; } - input_dev->name = "Atmel maXTouch Touchscreen"; + data->is_tp = pdata && pdata->is_tp; + + input_dev->name = (data->is_tp) ? "Atmel maXTouch Touchpad" : + "Atmel maXTouch Touchscreen"; snprintf(data->phys, sizeof(data->phys), "i2c-%u-%04x/input0", client->adapter->nr, client->addr); + input_dev->phys = data->phys; input_dev->id.bustype = BUS_I2C; @@ -1140,6 +1176,29 @@ static int mxt_probe(struct i2c_client *client, __set_bit(EV_KEY, input_dev->evbit); __set_bit(BTN_TOUCH, input_dev->keybit); + if (data->is_tp) { + int i; + __set_bit(INPUT_PROP_POINTER, input_dev->propbit); + __set_bit(INPUT_PROP_BUTTONPAD, input_dev->propbit); + + for (i = 0; i < MXT_NUM_GPIO; i++) + if (pdata->key_map[i] != KEY_RESERVED) + __set_bit(pdata->key_map[i], input_dev->keybit); + + __set_bit(BTN_TOOL_FINGER, input_dev->keybit); + __set_bit(BTN_TOOL_DOUBLETAP, input_dev->keybit); + __set_bit(BTN_TOOL_TRIPLETAP, input_dev->keybit); + __set_bit(BTN_TOOL_QUADTAP, input_dev->keybit); + __set_bit(BTN_TOOL_QUINTTAP, input_dev->keybit); + + input_abs_set_res(input_dev, ABS_X, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_Y, MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_X, + MXT_PIXELS_PER_MM); + input_abs_set_res(input_dev, ABS_MT_POSITION_Y, + MXT_PIXELS_PER_MM); + } + /* For single touch */ input_set_abs_params(input_dev, ABS_X, 0, data->max_x, 0, 0); @@ -1258,6 +1317,7 @@ static SIMPLE_DEV_PM_OPS(mxt_pm_ops, mxt_suspend, mxt_resume); static const struct i2c_device_id mxt_id[] = { { "qt602240_ts", 0 }, { "atmel_mxt_ts", 0 }, + { "atmel_mxt_tp", 0 }, { "mXT224", 0 }, { } }; diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index f027f7a..99e379b 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -15,6 +15,9 @@ #include +/* For key_map array */ +#define MXT_NUM_GPIO 4 + /* Orient */ #define MXT_NORMAL 0x0 #define MXT_DIAGONAL 0x1 @@ -39,6 +42,8 @@ struct mxt_platform_data { unsigned int voltage; unsigned char orient; unsigned long irqflags; + bool is_tp; + const unsigned int key_map[MXT_NUM_GPIO]; }; #endif /* __LINUX_ATMEL_MXT_TS_H */ -- cgit v1.1 From 2ef392042debb86003e3e1d756960a2e53930b60 Mon Sep 17 00:00:00 2001 From: Benson Leung Date: Thu, 7 Mar 2013 19:43:34 -0800 Subject: Platform: x86: chromeos_laptop : Add basic platform data for atmel devices Add basic platform data to get the current upstream driver working with the 224s touchpad and 1664s touchscreen. We will be using NULL config so we will use the settings from the devices' NVRAMs. Signed-off-by: Benson Leung Tested-by: Olof Johansson Signed-off-by: Linus Torvalds --- drivers/platform/x86/chromeos_laptop.c | 41 ++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/chromeos_laptop.c b/drivers/platform/x86/chromeos_laptop.c index 93d6680..3e5b4497 100644 --- a/drivers/platform/x86/chromeos_laptop.c +++ b/drivers/platform/x86/chromeos_laptop.c @@ -23,6 +23,9 @@ #include #include +#include +#include +#include #include #define ATMEL_TP_I2C_ADDR 0x4b @@ -67,15 +70,49 @@ static struct i2c_board_info __initdata tsl2563_als_device = { I2C_BOARD_INFO("tsl2563", TAOS_ALS_I2C_ADDR), }; +static struct mxt_platform_data atmel_224s_tp_platform_data = { + .x_line = 18, + .y_line = 12, + .x_size = 102*20, + .y_size = 68*20, + .blen = 0x80, /* Gain setting is in upper 4 bits */ + .threshold = 0x32, + .voltage = 0, /* 3.3V */ + .orient = MXT_VERTICAL_FLIP, + .irqflags = IRQF_TRIGGER_FALLING, + .is_tp = true, + .key_map = { KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + BTN_LEFT }, + .config = NULL, + .config_length = 0, +}; + static struct i2c_board_info __initdata atmel_224s_tp_device = { I2C_BOARD_INFO("atmel_mxt_tp", ATMEL_TP_I2C_ADDR), - .platform_data = NULL, + .platform_data = &atmel_224s_tp_platform_data, .flags = I2C_CLIENT_WAKE, }; +static struct mxt_platform_data atmel_1664s_platform_data = { + .x_line = 32, + .y_line = 50, + .x_size = 1700, + .y_size = 2560, + .blen = 0x89, /* Gain setting is in upper 4 bits */ + .threshold = 0x28, + .voltage = 0, /* 3.3V */ + .orient = MXT_ROTATED_90_COUNTER, + .irqflags = IRQF_TRIGGER_FALLING, + .is_tp = false, + .config = NULL, + .config_length = 0, +}; + static struct i2c_board_info __initdata atmel_1664s_device = { I2C_BOARD_INFO("atmel_mxt_ts", ATMEL_TS_I2C_ADDR), - .platform_data = NULL, + .platform_data = &atmel_1664s_platform_data, .flags = I2C_CLIENT_WAKE, }; -- cgit v1.1 From db04dc679bcc780ad6907943afe24a30de974a1b Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 9 Mar 2013 00:14:45 -0800 Subject: proc: Use nd_jump_link in proc_ns_follow_link Update proc_ns_follow_link to use nd_jump_link instead of just manually updating nd.path.dentry. This fixes the BUG_ON(nd->inode != parent->d_inode) reported by Dave Jones and reproduced trivially with mkdir /proc/self/ns/uts/a. Sigh it looks like the VFS change to require use of nd_jump_link happend while proc_ns_follow_link was baking and since the common case of proc_ns_follow_link continued to work without problems the need for making this change was overlooked. Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" --- fs/proc/namespaces.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/fs/proc/namespaces.c b/fs/proc/namespaces.c index b7a4719..66b51c0 100644 --- a/fs/proc/namespaces.c +++ b/fs/proc/namespaces.c @@ -118,7 +118,7 @@ static void *proc_ns_follow_link(struct dentry *dentry, struct nameidata *nd) struct super_block *sb = inode->i_sb; struct proc_inode *ei = PROC_I(inode); struct task_struct *task; - struct dentry *ns_dentry; + struct path ns_path; void *error = ERR_PTR(-EACCES); task = get_proc_task(inode); @@ -128,14 +128,14 @@ static void *proc_ns_follow_link(struct dentry *dentry, struct nameidata *nd) if (!ptrace_may_access(task, PTRACE_MODE_READ)) goto out_put_task; - ns_dentry = proc_ns_get_dentry(sb, task, ei->ns_ops); - if (IS_ERR(ns_dentry)) { - error = ERR_CAST(ns_dentry); + ns_path.dentry = proc_ns_get_dentry(sb, task, ei->ns_ops); + if (IS_ERR(ns_path.dentry)) { + error = ERR_CAST(ns_path.dentry); goto out_put_task; } - dput(nd->path.dentry); - nd->path.dentry = ns_dentry; + ns_path.mnt = mntget(nd->path.mnt); + nd_jump_link(nd, &ns_path); error = NULL; out_put_task: -- cgit v1.1 From 6659a20a76e0213ad84c33ad35024278811ed010 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 7 Mar 2013 13:50:16 +0530 Subject: ARC: MAINTAINERS update for ARC * Remove the non-functional mailing list placeholder * Add entries for arc_uart/Documentation Signed-off-by: Vineet Gupta --- MAINTAINERS | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index e95b1e9..8e2ced4 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7696,9 +7696,10 @@ F: include/linux/swiotlb.h SYNOPSYS ARC ARCHITECTURE M: Vineet Gupta -L: linux-snps-arc@vger.kernel.org S: Supported F: arch/arc/ +F: Documentation/devicetree/bindings/arc/ +F: drivers/tty/serial/arc-uart.c SYSV FILESYSTEM M: Christoph Hellwig -- cgit v1.1 From 190b1ecf257be308f0053c371fa7afa1ba5f4932 Mon Sep 17 00:00:00 2001 From: "J. Bruce Fields" Date: Fri, 8 Mar 2013 13:13:08 -0500 Subject: sunrpc: don't attempt to cancel unitialized work As of dc107402ae06286a9ed33c32daf3f35514a7cb8d "SUNRPC: make AF_LOCAL connect synchronous", we no longer initialize connect_worker in the AF_LOCAL case, resulting in warnings like: WARNING: at lib/debugobjects.c:261 debug_print_object+0x8c/0xb0() Hardware name: Bochs ODEBUG: assert_init not available (active state 0) object type: timer_list hint: stub_timer+0x0/0x20 Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi nfsd auth_rpcgss nfs_acl lockd sunrpc Pid: 4816, comm: nfsd Tainted: G W 3.8.0-rc2-00049-gdc10740 #801 Call Trace: [] ? free_obj_work+0x60/0xa0 [] warn_slowpath_common+0x7f/0xc0 [] warn_slowpath_fmt+0x46/0x50 [] debug_print_object+0x8c/0xb0 [] ? timer_debug_hint+0x10/0x10 [] debug_object_assert_init+0xe3/0x120 [] del_timer+0x2b/0x80 [] ? mark_held_locks+0x86/0x110 [] try_to_grab_pending+0xd9/0x150 [] __cancel_work_timer+0x27/0xc0 [] cancel_delayed_work_sync+0x13/0x20 [] xs_destroy+0x27/0x80 [sunrpc] [] xprt_destroy+0x78/0xa0 [sunrpc] [] xprt_put+0x21/0x30 [sunrpc] [] rpc_free_client+0x10f/0x1a0 [sunrpc] [] ? rpc_free_client+0x33/0x1a0 [sunrpc] [] rpc_release_client+0x6e/0xb0 [sunrpc] [] rpc_shutdown_client+0xfd/0x1b0 [sunrpc] [] rpcb_put_local+0x106/0x130 [sunrpc] ... Acked-by: "Myklebust, Trond" Signed-off-by: J. Bruce Fields --- net/sunrpc/xprtsock.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index c1d8476..3d02130 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -849,6 +849,14 @@ static void xs_tcp_close(struct rpc_xprt *xprt) xs_tcp_shutdown(xprt); } +static void xs_local_destroy(struct rpc_xprt *xprt) +{ + xs_close(xprt); + xs_free_peer_addresses(xprt); + xprt_free(xprt); + module_put(THIS_MODULE); +} + /** * xs_destroy - prepare to shutdown a transport * @xprt: doomed transport @@ -862,10 +870,7 @@ static void xs_destroy(struct rpc_xprt *xprt) cancel_delayed_work_sync(&transport->connect_worker); - xs_close(xprt); - xs_free_peer_addresses(xprt); - xprt_free(xprt); - module_put(THIS_MODULE); + xs_local_destroy(xprt); } static inline struct rpc_xprt *xprt_from_sock(struct sock *sk) @@ -2482,7 +2487,7 @@ static struct rpc_xprt_ops xs_local_ops = { .send_request = xs_local_send_request, .set_retrans_timeout = xprt_set_retrans_timeout_def, .close = xs_close, - .destroy = xs_destroy, + .destroy = xs_local_destroy, .print_stats = xs_local_print_stats, }; -- cgit v1.1 From e2f1a3bd8cdc046ece133a9e9ee6bd94727225b1 Mon Sep 17 00:00:00 2001 From: Nikola Pajkovsky Date: Tue, 26 Feb 2013 16:12:05 +0100 Subject: amd_iommu_init: remove __init from amd_iommu_erratum_746_workaround commit 318fe78 ("IOMMU, AMD Family15h Model10-1Fh erratum 746 Workaround") added amd_iommu_erratum_746_workaround and it's marked as __init, which is wrong WARNING: drivers/iommu/built-in.o(.text+0x639c): Section mismatch in reference from the function iommu_init_pci() to the function .init.text:amd_iommu_erratum_746_workaround() The function iommu_init_pci() references the function __init amd_iommu_erratum_746_workaround(). This is often because iommu_init_pci lacks a __init annotation or the annotation of amd_iommu_erratum_746_workaround is wrong. Signed-off-by: Nikola Pajkovsky Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu_init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index b6ecddb..e3c2d74 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -980,7 +980,7 @@ static void __init free_iommu_all(void) * BIOS should disable L2B micellaneous clock gating by setting * L2_L2B_CK_GATE_CONTROL[CKGateL2BMiscDisable](D0F2xF4_x90[2]) = 1b */ -static void __init amd_iommu_erratum_746_workaround(struct amd_iommu *iommu) +static void amd_iommu_erratum_746_workaround(struct amd_iommu *iommu) { u32 value; -- cgit v1.1 From ae1915892b4774655a5dc01039ce94efdff4b3fc Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 5 Mar 2013 23:16:48 +0100 Subject: iommu: OMAP: build only on OMAP2+ The OMAP IOMMU driver intentionally fails to build on OMAP1 platforms, so we should not allow enabling it there. Signed-off-by: Arnd Bergmann Cc: Joerg Roedel Cc: iommu@lists.linux-foundation.org Cc: Ohad Ben-Cohen Cc: Tony Lindgren Cc: Omar Ramirez Luna Acked-by: Tony Lindgren Signed-off-by: Joerg Roedel --- drivers/iommu/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 5c514d07..c332fb9 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -130,7 +130,7 @@ config IRQ_REMAP # OMAP IOMMU support config OMAP_IOMMU bool "OMAP IOMMU Support" - depends on ARCH_OMAP + depends on ARCH_OMAP2PLUS select IOMMU_API config OMAP_IOVMM -- cgit v1.1 From 8343bce195da8bb4d5a652ee085474a5cc62983f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 9 Mar 2013 10:31:01 -0800 Subject: Atmel MXT touchscreen: increase reset timeouts There is a more complete atmel patch-series out by Nick Dyer that fixes this and other things, but in the meantime this is the minimal thing to get the touchscreen going on (at least my) Pixel Chromebook. Not that I want my dirty fingers near that beautiful screen, but it seems that a non-initialized touchscreen will also end up being a constant wakeup source, so you have to disable it to go to sleep. And it's easier to just fix the initialization sequence. Signed-off-by: Linus Torvalds --- drivers/input/touchscreen/atmel_mxt_ts.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 8ed279c..59aa240 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -176,8 +176,8 @@ /* Define for MXT_GEN_COMMAND_T6 */ #define MXT_BOOT_VALUE 0xa5 #define MXT_BACKUP_VALUE 0x55 -#define MXT_BACKUP_TIME 25 /* msec */ -#define MXT_RESET_TIME 65 /* msec */ +#define MXT_BACKUP_TIME 50 /* msec */ +#define MXT_RESET_TIME 200 /* msec */ #define MXT_FWRESET_TIME 175 /* msec */ -- cgit v1.1 From 586948372189d33ceca9d89fb0c791ef4d53d8ad Mon Sep 17 00:00:00 2001 From: Stephan Frank Date: Thu, 7 Mar 2013 14:08:50 -0800 Subject: Input: wacom - add support for 0x10d It is a Wacom device found in Fujitsu Lifebook T902. Signed-off-by: Stephan Frank Acked-by: Ping Cheng Signed-off-by: Dmitry Torokhov --- drivers/input/tablet/wacom_wac.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/input/tablet/wacom_wac.c b/drivers/input/tablet/wacom_wac.c index 41b6fbf..1daa979 100644 --- a/drivers/input/tablet/wacom_wac.c +++ b/drivers/input/tablet/wacom_wac.c @@ -2017,6 +2017,9 @@ static const struct wacom_features wacom_features_0x100 = static const struct wacom_features wacom_features_0x101 = { "Wacom ISDv4 101", WACOM_PKGLEN_MTTPC, 26202, 16325, 255, 0, MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; +static const struct wacom_features wacom_features_0x10D = + { "Wacom ISDv4 10D", WACOM_PKGLEN_MTTPC, 26202, 16325, 255, + 0, MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; static const struct wacom_features wacom_features_0x4001 = { "Wacom ISDv4 4001", WACOM_PKGLEN_MTTPC, 26202, 16325, 255, 0, MTTPC, WACOM_INTUOS_RES, WACOM_INTUOS_RES }; @@ -2201,6 +2204,7 @@ const struct usb_device_id wacom_ids[] = { { USB_DEVICE_WACOM(0xEF) }, { USB_DEVICE_WACOM(0x100) }, { USB_DEVICE_WACOM(0x101) }, + { USB_DEVICE_WACOM(0x10D) }, { USB_DEVICE_WACOM(0x4001) }, { USB_DEVICE_WACOM(0x47) }, { USB_DEVICE_WACOM(0xF4) }, -- cgit v1.1 From c085c49920b2f900ba716b4ca1c1a55ece9872cc Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sat, 9 Mar 2013 05:52:19 +0000 Subject: bridge: fix mdb info leaks The bridging code discloses heap and stack bytes via the RTM_GETMDB netlink interface and via the notify messages send to group RTNLGRP_MDB afer a successful add/del. Fix both cases by initializing all unset members/padding bytes with memset(0). Cc: Stephen Hemminger Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/bridge/br_mdb.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 9f97b85..ee79f3f 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -80,6 +80,7 @@ static int br_mdb_fill_info(struct sk_buff *skb, struct netlink_callback *cb, port = p->port; if (port) { struct br_mdb_entry e; + memset(&e, 0, sizeof(e)); e.ifindex = port->dev->ifindex; e.state = p->state; if (p->addr.proto == htons(ETH_P_IP)) @@ -136,6 +137,7 @@ static int br_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb) break; bpm = nlmsg_data(nlh); + memset(bpm, 0, sizeof(*bpm)); bpm->ifindex = dev->ifindex; if (br_mdb_fill_info(skb, cb, dev) < 0) goto out; @@ -171,6 +173,7 @@ static int nlmsg_populate_mdb_fill(struct sk_buff *skb, return -EMSGSIZE; bpm = nlmsg_data(nlh); + memset(bpm, 0, sizeof(*bpm)); bpm->family = AF_BRIDGE; bpm->ifindex = dev->ifindex; nest = nla_nest_start(skb, MDBA_MDB); @@ -228,6 +231,7 @@ void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, { struct br_mdb_entry entry; + memset(&entry, 0, sizeof(entry)); entry.ifindex = port->dev->ifindex; entry.addr.proto = group->proto; entry.addr.u.ip4 = group->u.ip4; -- cgit v1.1 From 84d73cd3fb142bf1298a8c13fd4ca50fd2432372 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sat, 9 Mar 2013 05:52:20 +0000 Subject: rtnl: fix info leak on RTM_GETLINK request for VF devices Initialize the mac address buffer with 0 as the driver specific function will probably not fill the whole buffer. In fact, all in-kernel drivers fill only ETH_ALEN of the MAX_ADDR_LEN bytes, i.e. 6 of the 32 possible bytes. Therefore we currently leak 26 bytes of stack memory to userland via the netlink interface. Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index b376410..a585d45 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -979,6 +979,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, * report anything. */ ivi.spoofchk = -1; + memset(ivi.mac, 0, sizeof(ivi.mac)); if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) break; vf_mac.vf = -- cgit v1.1 From 29cd8ae0e1a39e239a3a7b67da1986add1199fc0 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sat, 9 Mar 2013 05:52:21 +0000 Subject: dcbnl: fix various netlink info leaks The dcb netlink interface leaks stack memory in various places: * perm_addr[] buffer is only filled at max with 12 of the 32 bytes but copied completely, * no in-kernel driver fills all fields of an IEEE 802.1Qaz subcommand, so we're leaking up to 58 bytes for ieee_ets structs, up to 136 bytes for ieee_pfc structs, etc., * the same is true for CEE -- no in-kernel driver fills the whole struct, Prevent all of the above stack info leaks by properly initializing the buffers/structures involved. Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/dcb/dcbnl.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/net/dcb/dcbnl.c b/net/dcb/dcbnl.c index 1b588e2..21291f1 100644 --- a/net/dcb/dcbnl.c +++ b/net/dcb/dcbnl.c @@ -284,6 +284,7 @@ static int dcbnl_getperm_hwaddr(struct net_device *netdev, struct nlmsghdr *nlh, if (!netdev->dcbnl_ops->getpermhwaddr) return -EOPNOTSUPP; + memset(perm_addr, 0, sizeof(perm_addr)); netdev->dcbnl_ops->getpermhwaddr(netdev, perm_addr); return nla_put(skb, DCB_ATTR_PERM_HWADDR, sizeof(perm_addr), perm_addr); @@ -1042,6 +1043,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) if (ops->ieee_getets) { struct ieee_ets ets; + memset(&ets, 0, sizeof(ets)); err = ops->ieee_getets(netdev, &ets); if (!err && nla_put(skb, DCB_ATTR_IEEE_ETS, sizeof(ets), &ets)) @@ -1050,6 +1052,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) if (ops->ieee_getmaxrate) { struct ieee_maxrate maxrate; + memset(&maxrate, 0, sizeof(maxrate)); err = ops->ieee_getmaxrate(netdev, &maxrate); if (!err) { err = nla_put(skb, DCB_ATTR_IEEE_MAXRATE, @@ -1061,6 +1064,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) if (ops->ieee_getpfc) { struct ieee_pfc pfc; + memset(&pfc, 0, sizeof(pfc)); err = ops->ieee_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_IEEE_PFC, sizeof(pfc), &pfc)) @@ -1094,6 +1098,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) /* get peer info if available */ if (ops->ieee_peer_getets) { struct ieee_ets ets; + memset(&ets, 0, sizeof(ets)); err = ops->ieee_peer_getets(netdev, &ets); if (!err && nla_put(skb, DCB_ATTR_IEEE_PEER_ETS, sizeof(ets), &ets)) @@ -1102,6 +1107,7 @@ static int dcbnl_ieee_fill(struct sk_buff *skb, struct net_device *netdev) if (ops->ieee_peer_getpfc) { struct ieee_pfc pfc; + memset(&pfc, 0, sizeof(pfc)); err = ops->ieee_peer_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_IEEE_PEER_PFC, sizeof(pfc), &pfc)) @@ -1280,6 +1286,7 @@ static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) /* peer info if available */ if (ops->cee_peer_getpg) { struct cee_pg pg; + memset(&pg, 0, sizeof(pg)); err = ops->cee_peer_getpg(netdev, &pg); if (!err && nla_put(skb, DCB_ATTR_CEE_PEER_PG, sizeof(pg), &pg)) @@ -1288,6 +1295,7 @@ static int dcbnl_cee_fill(struct sk_buff *skb, struct net_device *netdev) if (ops->cee_peer_getpfc) { struct cee_pfc pfc; + memset(&pfc, 0, sizeof(pfc)); err = ops->cee_peer_getpfc(netdev, &pfc); if (!err && nla_put(skb, DCB_ATTR_CEE_PEER_PFC, sizeof(pfc), &pfc)) -- cgit v1.1 From fef4c86e59a76f2ec1a77d5732f40752700bd5dd Mon Sep 17 00:00:00 2001 From: David Oostdyk Date: Fri, 8 Mar 2013 08:28:15 +0000 Subject: rrunner.c: fix possible memory leak in rr_init_one() In the event that register_netdev() failed, the rrpriv->evt_ring allocation would have not been freed. Signed-off-by: David Oostdyk Signed-off-by: David S. Miller --- drivers/net/hippi/rrunner.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/hippi/rrunner.c b/drivers/net/hippi/rrunner.c index e5b19b0..3c4d627 100644 --- a/drivers/net/hippi/rrunner.c +++ b/drivers/net/hippi/rrunner.c @@ -202,6 +202,9 @@ static int rr_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) return 0; out: + if (rrpriv->evt_ring) + pci_free_consistent(pdev, EVT_RING_SIZE, rrpriv->evt_ring, + rrpriv->evt_ring_dma); if (rrpriv->rx_ring) pci_free_consistent(pdev, RX_TOTAL_SIZE, rrpriv->rx_ring, rrpriv->rx_ring_dma); -- cgit v1.1 From 9026c4927254f5bea695cc3ef2e255280e6a3011 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?YOSHIFUJI=20Hideaki=20/=20=E5=90=89=E8=97=A4=E8=8B=B1?= =?UTF-8?q?=E6=98=8E?= Date: Sat, 9 Mar 2013 09:11:57 +0000 Subject: 6lowpan: Fix endianness issue in is_addr_link_local(). Signed-off-by: YOSHIFUJI Hideaki Signed-off-by: David S. Miller --- net/ieee802154/6lowpan.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ieee802154/6lowpan.h b/net/ieee802154/6lowpan.h index 8c2251f..bba5f83 100644 --- a/net/ieee802154/6lowpan.h +++ b/net/ieee802154/6lowpan.h @@ -84,7 +84,7 @@ (memcmp(addr1, addr2, length >> 3) == 0) /* local link, i.e. FE80::/10 */ -#define is_addr_link_local(a) (((a)->s6_addr16[0]) == 0x80FE) +#define is_addr_link_local(a) (((a)->s6_addr16[0]) == htons(0xFE80)) /* * check whether we can compress the IID to 16 bits, -- cgit v1.1 From 94f54f5336aac6801f2a14dcb12467e41b35456a Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 5 Mar 2013 22:26:06 +1000 Subject: drm/nv50: encoder creation failure doesn't mean full init failure It's meant as a notification only, not a fatal error. Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 87a5a56..2db5799 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -2276,6 +2276,7 @@ nv50_display_create(struct drm_device *dev) NV_WARN(drm, "failed to create encoder %d/%d/%d: %d\n", dcbe->location, dcbe->type, ffs(dcbe->or) - 1, ret); + ret = 0; } } -- cgit v1.1 From c8f28f89566321842afb81d3ddd79d611e3587ce Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Tue, 5 Mar 2013 14:59:26 +0100 Subject: drm/nouveau: fix regression in vblanking nv50_vblank_enable/disable got switched from NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_0 (4) << head to 1 << head, which is wrong. 4 << head is the correct value. Fixes regression with vblanking since 1d7c71a3e2f77 "drm/nouveau/disp: port vblank handling to event interface" Signed-off-by: Maarten Lankhorst Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/engine/disp/nv50.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c index 5fa1326..02e369f 100644 --- a/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c +++ b/drivers/gpu/drm/nouveau/core/engine/disp/nv50.c @@ -544,13 +544,13 @@ nv50_disp_curs_ofuncs = { static void nv50_disp_base_vblank_enable(struct nouveau_event *event, int head) { - nv_mask(event->priv, 0x61002c, (1 << head), (1 << head)); + nv_mask(event->priv, 0x61002c, (4 << head), (4 << head)); } static void nv50_disp_base_vblank_disable(struct nouveau_event *event, int head) { - nv_mask(event->priv, 0x61002c, (1 << head), (0 << head)); + nv_mask(event->priv, 0x61002c, (4 << head), 0); } static int -- cgit v1.1 From 2b77c1c01b556045c451f034389932efb5b71c58 Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Sun, 3 Mar 2013 18:58:45 +0100 Subject: drm/nouveau: idle channel before releasing notify object Unmapping it while it's still in use (e.g. by M2MF) can lead to page faults and a lot of TRAP_M2MF spam in dmesg. Signed-off-by: Marcin Slusarz Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_abi16.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c index 4124192..3b6dc88 100644 --- a/drivers/gpu/drm/nouveau/nouveau_abi16.c +++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c @@ -116,6 +116,11 @@ nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16, { struct nouveau_abi16_ntfy *ntfy, *temp; + /* wait for all activity to stop before releasing notify object, which + * may be still in use */ + if (chan->chan && chan->ntfy) + nouveau_channel_idle(chan->chan); + /* cleanup notifier state */ list_for_each_entry_safe(ntfy, temp, &chan->notifiers, head) { nouveau_abi16_ntfy_fini(chan, ntfy); -- cgit v1.1 From c1b90df22595441d3a0ae86bd7c3bcc32787950a Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Sun, 3 Mar 2013 13:32:00 +0100 Subject: drm/nv50: use correct tiling methods for m2mf buffer moves Currently used only on original nv50, nvaa and nvac. Signed-off-by: Marcin Slusarz Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bo.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 11ca821..7ff1071 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -801,7 +801,7 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo, stride = 16 * 4; height = amount / stride; - if (new_mem->mem_type == TTM_PL_VRAM && + if (old_mem->mem_type == TTM_PL_VRAM && nouveau_bo_tile_layout(nvbo)) { ret = RING_SPACE(chan, 8); if (ret) @@ -823,7 +823,7 @@ nv50_bo_move_m2mf(struct nouveau_channel *chan, struct ttm_buffer_object *bo, BEGIN_NV04(chan, NvSubCopy, 0x0200, 1); OUT_RING (chan, 1); } - if (old_mem->mem_type == TTM_PL_VRAM && + if (new_mem->mem_type == TTM_PL_VRAM && nouveau_bo_tile_layout(nvbo)) { ret = RING_SPACE(chan, 8); if (ret) -- cgit v1.1 From f6161aa153581da4a3867a2d1a7caf4be19b6ec9 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 10 Mar 2013 16:54:19 -0700 Subject: Linux 3.9-rc2 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 5bd9f770..a05ea42 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 9 SUBLEVEL = 0 -EXTRAVERSION = -rc1 +EXTRAVERSION = -rc2 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v1.1 From bd384364c1185ecb01f3b8242c915ccb5921c60d Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Sun, 10 Mar 2013 20:48:59 -0400 Subject: ext4: avoid a potential overflow in ext4_es_can_be_merged() Check the length of an extent to avoid a potential overflow in ext4_es_can_be_merged(). Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" Cc: Dmitry Monakhov --- fs/ext4/extents_status.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 95796a1..37f9a2d 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -333,17 +333,27 @@ static void ext4_es_free_extent(struct inode *inode, struct extent_status *es) static int ext4_es_can_be_merged(struct extent_status *es1, struct extent_status *es2) { - if (es1->es_lblk + es1->es_len != es2->es_lblk) + if (ext4_es_status(es1) != ext4_es_status(es2)) return 0; - if (ext4_es_status(es1) != ext4_es_status(es2)) + if (((__u64) es1->es_len) + es2->es_len > 0xFFFFFFFFULL) return 0; - if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) && - (ext4_es_pblock(es1) + es1->es_len != ext4_es_pblock(es2))) + if (((__u64) es1->es_lblk) + es1->es_len != es2->es_lblk) return 0; - return 1; + if ((ext4_es_is_written(es1) || ext4_es_is_unwritten(es1)) && + (ext4_es_pblock(es1) + es1->es_len == ext4_es_pblock(es2))) + return 1; + + if (ext4_es_is_hole(es1)) + return 1; + + /* we need to check delayed extent is without unwritten status */ + if (ext4_es_is_delayed(es1) && !ext4_es_is_unwritten(es1)) + return 1; + + return 0; } static struct extent_status * -- cgit v1.1 From 921f266bc6bfe6ebb599c559f10443af314c19ec Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Sun, 10 Mar 2013 21:01:03 -0400 Subject: ext4: add self-testing infrastructure to do a sanity check This commit adds a self-testing infrastructure like extent tree does to do a sanity check for extent status tree. After status tree is as a extent cache, we'd better to make sure that it caches right result. After applied this commit, we will get a lot of messages when we run xfstests as below. ... kernel: ES len assertation failed for inode: 230 retval 1 != map->m_len 3 in ext4_map_blocks (allocation) ... kernel: ES cache assertation failed for inode: 230 es_cached ex [974/2/4781/20] != found ex [974/1/4781/1000] ... kernel: ES insert assertation failed for inode: 635 ex_status [0/45/21388/w] != es_status [44/1/21432/u] ... Signed-off-by: Dmitry Monakhov Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents_status.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++ fs/ext4/extents_status.h | 6 ++ fs/ext4/inode.c | 96 ++++++++++++++++++++++++++ 3 files changed, 277 insertions(+) diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 37f9a2d..d2a8cb7 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -399,6 +399,179 @@ ext4_es_try_to_merge_right(struct inode *inode, struct extent_status *es) return es; } +#ifdef ES_AGGRESSIVE_TEST +static void ext4_es_insert_extent_ext_check(struct inode *inode, + struct extent_status *es) +{ + struct ext4_ext_path *path = NULL; + struct ext4_extent *ex; + ext4_lblk_t ee_block; + ext4_fsblk_t ee_start; + unsigned short ee_len; + int depth, ee_status, es_status; + + path = ext4_ext_find_extent(inode, es->es_lblk, NULL); + if (IS_ERR(path)) + return; + + depth = ext_depth(inode); + ex = path[depth].p_ext; + + if (ex) { + + ee_block = le32_to_cpu(ex->ee_block); + ee_start = ext4_ext_pblock(ex); + ee_len = ext4_ext_get_actual_len(ex); + + ee_status = ext4_ext_is_uninitialized(ex) ? 1 : 0; + es_status = ext4_es_is_unwritten(es) ? 1 : 0; + + /* + * Make sure ex and es are not overlap when we try to insert + * a delayed/hole extent. + */ + if (!ext4_es_is_written(es) && !ext4_es_is_unwritten(es)) { + if (in_range(es->es_lblk, ee_block, ee_len)) { + pr_warn("ES insert assertation failed for " + "inode: %lu we can find an extent " + "at block [%d/%d/%llu/%c], but we " + "want to add an delayed/hole extent " + "[%d/%d/%llu/%llx]\n", + inode->i_ino, ee_block, ee_len, + ee_start, ee_status ? 'u' : 'w', + es->es_lblk, es->es_len, + ext4_es_pblock(es), ext4_es_status(es)); + } + goto out; + } + + /* + * We don't check ee_block == es->es_lblk, etc. because es + * might be a part of whole extent, vice versa. + */ + if (es->es_lblk < ee_block || + ext4_es_pblock(es) != ee_start + es->es_lblk - ee_block) { + pr_warn("ES insert assertation failed for inode: %lu " + "ex_status [%d/%d/%llu/%c] != " + "es_status [%d/%d/%llu/%c]\n", inode->i_ino, + ee_block, ee_len, ee_start, + ee_status ? 'u' : 'w', es->es_lblk, es->es_len, + ext4_es_pblock(es), es_status ? 'u' : 'w'); + goto out; + } + + if (ee_status ^ es_status) { + pr_warn("ES insert assertation failed for inode: %lu " + "ex_status [%d/%d/%llu/%c] != " + "es_status [%d/%d/%llu/%c]\n", inode->i_ino, + ee_block, ee_len, ee_start, + ee_status ? 'u' : 'w', es->es_lblk, es->es_len, + ext4_es_pblock(es), es_status ? 'u' : 'w'); + } + } else { + /* + * We can't find an extent on disk. So we need to make sure + * that we don't want to add an written/unwritten extent. + */ + if (!ext4_es_is_delayed(es) && !ext4_es_is_hole(es)) { + pr_warn("ES insert assertation failed for inode: %lu " + "can't find an extent at block %d but we want " + "to add an written/unwritten extent " + "[%d/%d/%llu/%llx]\n", inode->i_ino, + es->es_lblk, es->es_lblk, es->es_len, + ext4_es_pblock(es), ext4_es_status(es)); + } + } +out: + if (path) { + ext4_ext_drop_refs(path); + kfree(path); + } +} + +static void ext4_es_insert_extent_ind_check(struct inode *inode, + struct extent_status *es) +{ + struct ext4_map_blocks map; + int retval; + + /* + * Here we call ext4_ind_map_blocks to lookup a block mapping because + * 'Indirect' structure is defined in indirect.c. So we couldn't + * access direct/indirect tree from outside. It is too dirty to define + * this function in indirect.c file. + */ + + map.m_lblk = es->es_lblk; + map.m_len = es->es_len; + + retval = ext4_ind_map_blocks(NULL, inode, &map, 0); + if (retval > 0) { + if (ext4_es_is_delayed(es) || ext4_es_is_hole(es)) { + /* + * We want to add a delayed/hole extent but this + * block has been allocated. + */ + pr_warn("ES insert assertation failed for inode: %lu " + "We can find blocks but we want to add a " + "delayed/hole extent [%d/%d/%llu/%llx]\n", + inode->i_ino, es->es_lblk, es->es_len, + ext4_es_pblock(es), ext4_es_status(es)); + return; + } else if (ext4_es_is_written(es)) { + if (retval != es->es_len) { + pr_warn("ES insert assertation failed for " + "inode: %lu retval %d != es_len %d\n", + inode->i_ino, retval, es->es_len); + return; + } + if (map.m_pblk != ext4_es_pblock(es)) { + pr_warn("ES insert assertation failed for " + "inode: %lu m_pblk %llu != " + "es_pblk %llu\n", + inode->i_ino, map.m_pblk, + ext4_es_pblock(es)); + return; + } + } else { + /* + * We don't need to check unwritten extent because + * indirect-based file doesn't have it. + */ + BUG_ON(1); + } + } else if (retval == 0) { + if (ext4_es_is_written(es)) { + pr_warn("ES insert assertation failed for inode: %lu " + "We can't find the block but we want to add " + "an written extent [%d/%d/%llu/%llx]\n", + inode->i_ino, es->es_lblk, es->es_len, + ext4_es_pblock(es), ext4_es_status(es)); + return; + } + } +} + +static inline void ext4_es_insert_extent_check(struct inode *inode, + struct extent_status *es) +{ + /* + * We don't need to worry about the race condition because + * caller takes i_data_sem locking. + */ + BUG_ON(!rwsem_is_locked(&EXT4_I(inode)->i_data_sem)); + if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) + ext4_es_insert_extent_ext_check(inode, es); + else + ext4_es_insert_extent_ind_check(inode, es); +} +#else +static inline void ext4_es_insert_extent_check(struct inode *inode, + struct extent_status *es) +{ +} +#endif + static int __es_insert_extent(struct inode *inode, struct extent_status *newes) { struct ext4_es_tree *tree = &EXT4_I(inode)->i_es_tree; @@ -481,6 +654,8 @@ int ext4_es_insert_extent(struct inode *inode, ext4_lblk_t lblk, ext4_es_store_status(&newes, status); trace_ext4_es_insert_extent(inode, &newes); + ext4_es_insert_extent_check(inode, &newes); + write_lock(&EXT4_I(inode)->i_es_lock); err = __es_remove_extent(inode, lblk, end); if (err != 0) diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h index f190dfe..56140ad 100644 --- a/fs/ext4/extents_status.h +++ b/fs/ext4/extents_status.h @@ -21,6 +21,12 @@ #endif /* + * With ES_AGGRESSIVE_TEST defined, the result of es caching will be + * checked with old map_block's result. + */ +#define ES_AGGRESSIVE_TEST__ + +/* * These flags live in the high bits of extent_status.es_pblk */ #define EXTENT_STATUS_WRITTEN (1ULL << 63) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 95a0c62..3186a43 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -482,6 +482,58 @@ static pgoff_t ext4_num_dirty_pages(struct inode *inode, pgoff_t idx, return num; } +#ifdef ES_AGGRESSIVE_TEST +static void ext4_map_blocks_es_recheck(handle_t *handle, + struct inode *inode, + struct ext4_map_blocks *es_map, + struct ext4_map_blocks *map, + int flags) +{ + int retval; + + map->m_flags = 0; + /* + * There is a race window that the result is not the same. + * e.g. xfstests #223 when dioread_nolock enables. The reason + * is that we lookup a block mapping in extent status tree with + * out taking i_data_sem. So at the time the unwritten extent + * could be converted. + */ + if (!(flags & EXT4_GET_BLOCKS_NO_LOCK)) + down_read((&EXT4_I(inode)->i_data_sem)); + if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) { + retval = ext4_ext_map_blocks(handle, inode, map, flags & + EXT4_GET_BLOCKS_KEEP_SIZE); + } else { + retval = ext4_ind_map_blocks(handle, inode, map, flags & + EXT4_GET_BLOCKS_KEEP_SIZE); + } + if (!(flags & EXT4_GET_BLOCKS_NO_LOCK)) + up_read((&EXT4_I(inode)->i_data_sem)); + /* + * Clear EXT4_MAP_FROM_CLUSTER and EXT4_MAP_BOUNDARY flag + * because it shouldn't be marked in es_map->m_flags. + */ + map->m_flags &= ~(EXT4_MAP_FROM_CLUSTER | EXT4_MAP_BOUNDARY); + + /* + * We don't check m_len because extent will be collpased in status + * tree. So the m_len might not equal. + */ + if (es_map->m_lblk != map->m_lblk || + es_map->m_flags != map->m_flags || + es_map->m_pblk != map->m_pblk) { + printk("ES cache assertation failed for inode: %lu " + "es_cached ex [%d/%d/%llu/%x] != " + "found ex [%d/%d/%llu/%x] retval %d flags %x\n", + inode->i_ino, es_map->m_lblk, es_map->m_len, + es_map->m_pblk, es_map->m_flags, map->m_lblk, + map->m_len, map->m_pblk, map->m_flags, + retval, flags); + } +} +#endif /* ES_AGGRESSIVE_TEST */ + /* * The ext4_map_blocks() function tries to look up the requested blocks, * and returns if the blocks are already mapped. @@ -509,6 +561,11 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, { struct extent_status es; int retval; +#ifdef ES_AGGRESSIVE_TEST + struct ext4_map_blocks orig_map; + + memcpy(&orig_map, map, sizeof(*map)); +#endif map->m_flags = 0; ext_debug("ext4_map_blocks(): inode %lu, flag %d, max_blocks %u," @@ -531,6 +588,10 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, } else { BUG_ON(1); } +#ifdef ES_AGGRESSIVE_TEST + ext4_map_blocks_es_recheck(handle, inode, map, + &orig_map, flags); +#endif goto found; } @@ -551,6 +612,15 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode, int ret; unsigned long long status; +#ifdef ES_AGGRESSIVE_TEST + if (retval != map->m_len) { + printk("ES len assertation failed for inode: %lu " + "retval %d != map->m_len %d " + "in %s (lookup)\n", inode->i_ino, retval, + map->m_len, __func__); + } +#endif + status = map->m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN; if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) && @@ -643,6 +713,15 @@ found: int ret; unsigned long long status; +#ifdef ES_AGGRESSIVE_TEST + if (retval != map->m_len) { + printk("ES len assertation failed for inode: %lu " + "retval %d != map->m_len %d " + "in %s (allocation)\n", inode->i_ino, retval, + map->m_len, __func__); + } +#endif + status = map->m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN; if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) && @@ -1768,6 +1847,11 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock, struct extent_status es; int retval; sector_t invalid_block = ~((sector_t) 0xffff); +#ifdef ES_AGGRESSIVE_TEST + struct ext4_map_blocks orig_map; + + memcpy(&orig_map, map, sizeof(*map)); +#endif if (invalid_block < ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es)) invalid_block = ~0; @@ -1809,6 +1893,9 @@ static int ext4_da_map_blocks(struct inode *inode, sector_t iblock, else BUG_ON(1); +#ifdef ES_AGGRESSIVE_TEST + ext4_map_blocks_es_recheck(NULL, inode, map, &orig_map, 0); +#endif return retval; } @@ -1873,6 +1960,15 @@ add_delayed: int ret; unsigned long long status; +#ifdef ES_AGGRESSIVE_TEST + if (retval != map->m_len) { + printk("ES len assertation failed for inode: %lu " + "retval %d != map->m_len %d " + "in %s (lookup)\n", inode->i_ino, retval, + map->m_len, __func__); + } +#endif + status = map->m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN; ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len, -- cgit v1.1 From cdee78433c138c2f2018a6884673739af2634787 Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Sun, 10 Mar 2013 21:08:52 -0400 Subject: ext4: fix wrong m_len value after unwritten extent conversion The ext4_ext_handle_uninitialized_extents() function was assuming the return value of ext4_ext_map_blocks() is equal to map->m_len. This incorrect assumption was harmless until we started use status tree as a extent cache because we need to update status tree according to 'm_len' value. Meanwhile this commit marks EXT4_MAP_MAPPED flag after unwritten extent conversion. It shouldn't cause a bug because we update status tree according to checking EXT4_MAP_UNWRITTEN flag. But it should be fixed. After applied this commit, the following error message from self-testing infrastructure disappears. ... kernel: ES len assertation failed for inode: 230 retval 1 != map->m_len 3 in ext4_map_blocks (allocation) ... Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" Cc: Dmitry Monakhov --- fs/ext4/extents.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 25c86aa..110e85a 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3650,6 +3650,10 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode, path, map->m_len); } else err = ret; + map->m_flags |= EXT4_MAP_MAPPED; + if (allocated > map->m_len) + allocated = map->m_len; + map->m_len = allocated; goto out2; } /* buffered IO case */ -- cgit v1.1 From adb2355104b2109e06ba5276485d187d023b2fd2 Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Sun, 10 Mar 2013 21:13:05 -0400 Subject: ext4: update extent status tree after an extent is zeroed out When we try to split an extent, this extent could be zeroed out and mark as initialized. But we don't know this in ext4_map_blocks because it only returns a length of allocated extent. Meanwhile we will mark this extent as uninitialized because we only check m_flags. This commit update extent status tree when we try to split an unwritten extent. We don't need to worry about the status of this extent because we always mark it as initialized. Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" Cc: Dmitry Monakhov --- fs/ext4/extents.c | 35 +++++++++++++++++++++++++++++++---- fs/ext4/extents_status.c | 17 +++++++++++++++++ fs/ext4/extents_status.h | 3 +++ fs/ext4/inode.c | 10 ++++++++++ 4 files changed, 61 insertions(+), 4 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 110e85a..7e37018 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2925,7 +2925,7 @@ static int ext4_split_extent_at(handle_t *handle, { ext4_fsblk_t newblock; ext4_lblk_t ee_block; - struct ext4_extent *ex, newex, orig_ex; + struct ext4_extent *ex, newex, orig_ex, zero_ex; struct ext4_extent *ex2 = NULL; unsigned int ee_len, depth; int err = 0; @@ -2996,12 +2996,26 @@ static int ext4_split_extent_at(handle_t *handle, err = ext4_ext_insert_extent(handle, inode, path, &newex, flags); if (err == -ENOSPC && (EXT4_EXT_MAY_ZEROOUT & split_flag)) { if (split_flag & (EXT4_EXT_DATA_VALID1|EXT4_EXT_DATA_VALID2)) { - if (split_flag & EXT4_EXT_DATA_VALID1) + if (split_flag & EXT4_EXT_DATA_VALID1) { err = ext4_ext_zeroout(inode, ex2); - else + zero_ex.ee_block = ex2->ee_block; + zero_ex.ee_len = ext4_ext_get_actual_len(ex2); + ext4_ext_store_pblock(&zero_ex, + ext4_ext_pblock(ex2)); + } else { err = ext4_ext_zeroout(inode, ex); - } else + zero_ex.ee_block = ex->ee_block; + zero_ex.ee_len = ext4_ext_get_actual_len(ex); + ext4_ext_store_pblock(&zero_ex, + ext4_ext_pblock(ex)); + } + } else { err = ext4_ext_zeroout(inode, &orig_ex); + zero_ex.ee_block = orig_ex.ee_block; + zero_ex.ee_len = ext4_ext_get_actual_len(&orig_ex); + ext4_ext_store_pblock(&zero_ex, + ext4_ext_pblock(&orig_ex)); + } if (err) goto fix_extent_len; @@ -3009,6 +3023,12 @@ static int ext4_split_extent_at(handle_t *handle, ex->ee_len = cpu_to_le16(ee_len); ext4_ext_try_to_merge(handle, inode, path, ex); err = ext4_ext_dirty(handle, inode, path + path->p_depth); + if (err) + goto fix_extent_len; + + /* update extent status tree */ + err = ext4_es_zeroout(inode, &zero_ex); + goto out; } else if (err) goto fix_extent_len; @@ -3150,6 +3170,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, ee_block = le32_to_cpu(ex->ee_block); ee_len = ext4_ext_get_actual_len(ex); allocated = ee_len - (map->m_lblk - ee_block); + zero_ex.ee_len = 0; trace_ext4_ext_convert_to_initialized_enter(inode, map, ex); @@ -3247,6 +3268,9 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, err = ext4_ext_zeroout(inode, ex); if (err) goto out; + zero_ex.ee_block = ex->ee_block; + zero_ex.ee_len = ext4_ext_get_actual_len(ex); + ext4_ext_store_pblock(&zero_ex, ext4_ext_pblock(ex)); err = ext4_ext_get_access(handle, inode, path + depth); if (err) @@ -3305,6 +3329,9 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, err = allocated; out: + /* If we have gotten a failure, don't zero out status tree */ + if (!err) + err = ext4_es_zeroout(inode, &zero_ex); return err ? err : allocated; } diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index d2a8cb7..fe3337a 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -854,6 +854,23 @@ int ext4_es_remove_extent(struct inode *inode, ext4_lblk_t lblk, return err; } +int ext4_es_zeroout(struct inode *inode, struct ext4_extent *ex) +{ + ext4_lblk_t ee_block; + ext4_fsblk_t ee_pblock; + unsigned int ee_len; + + ee_block = le32_to_cpu(ex->ee_block); + ee_len = ext4_ext_get_actual_len(ex); + ee_pblock = ext4_ext_pblock(ex); + + if (ee_len == 0) + return 0; + + return ext4_es_insert_extent(inode, ee_block, ee_len, ee_pblock, + EXTENT_STATUS_WRITTEN); +} + static int ext4_es_shrink(struct shrinker *shrink, struct shrink_control *sc) { struct ext4_sb_info *sbi = container_of(shrink, diff --git a/fs/ext4/extents_status.h b/fs/ext4/extents_status.h index 56140ad..d8e2d4d 100644 --- a/fs/ext4/extents_status.h +++ b/fs/ext4/extents_status.h @@ -39,6 +39,8 @@ EXTENT_STATUS_DELAYED | \ EXTENT_STATUS_HOLE) +struct ext4_extent; + struct extent_status { struct rb_node rb_node; ext4_lblk_t es_lblk; /* first logical block extent covers */ @@ -64,6 +66,7 @@ extern void ext4_es_find_delayed_extent(struct inode *inode, ext4_lblk_t lblk, struct extent_status *es); extern int ext4_es_lookup_extent(struct inode *inode, ext4_lblk_t lblk, struct extent_status *es); +extern int ext4_es_zeroout(struct inode *inode, struct ext4_extent *ex); static inline int ext4_es_is_written(struct extent_status *es) { diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 3186a43..4f1d54a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -722,6 +722,15 @@ found: } #endif + /* + * If the extent has been zeroed out, we don't need to update + * extent status tree. + */ + if ((flags & EXT4_GET_BLOCKS_PRE_IO) && + ext4_es_lookup_extent(inode, map->m_lblk, &es)) { + if (ext4_es_is_written(&es)) + goto has_zeroout; + } status = map->m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN; if (!(flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) && @@ -734,6 +743,7 @@ found: retval = ret; } +has_zeroout: up_write((&EXT4_I(inode)->i_data_sem)); if (retval > 0 && map->m_flags & EXT4_MAP_MAPPED) { int ret = check_block_validity(inode, map); -- cgit v1.1 From 3a2256702e47f68f921dfad41b1764d05c572329 Mon Sep 17 00:00:00 2001 From: Zheng Liu Date: Sun, 10 Mar 2013 21:20:23 -0400 Subject: ext4: fix the wrong number of the allocated blocks in ext4_split_extent() This commit fixes a wrong return value of the number of the allocated blocks in ext4_split_extent. When the length of blocks we want to allocate is greater than the length of the current extent, we return a wrong number. Let's see what happens in the following case when we call ext4_split_extent(). map: [48, 72] ex: [32, 64, u] 'ex' will be split into two parts: ex1: [32, 47, u] ex2: [48, 64, w] 'map->m_len' is returned from this function, and the value is 24. But the real length is 16. So it should be fixed. Meanwhile in this commit we use right length of the allocated blocks when get_reserved_cluster_alloc in ext4_ext_handle_uninitialized_extents is called. Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" Cc: Dmitry Monakhov Cc: stable@vger.kernel.org --- fs/ext4/extents.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 7e37018..69df02f 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3067,6 +3067,7 @@ static int ext4_split_extent(handle_t *handle, int err = 0; int uninitialized; int split_flag1, flags1; + int allocated = map->m_len; depth = ext_depth(inode); ex = path[depth].p_ext; @@ -3086,6 +3087,8 @@ static int ext4_split_extent(handle_t *handle, map->m_lblk + map->m_len, split_flag1, flags1); if (err) goto out; + } else { + allocated = ee_len - (map->m_lblk - ee_block); } /* * Update path is required because previous ext4_split_extent_at() may @@ -3115,7 +3118,7 @@ static int ext4_split_extent(handle_t *handle, ext4_ext_show_leaf(inode, path); out: - return err ? err : map->m_len; + return err ? err : allocated; } /* @@ -3730,6 +3733,7 @@ out: allocated - map->m_len); allocated = map->m_len; } + map->m_len = allocated; /* * If we have done fallocate with the offset that is already -- cgit v1.1 From 39735019716e93914a366ac1fb2e78f91b170545 Mon Sep 17 00:00:00 2001 From: Rabin Vincent Date: Sat, 9 Mar 2013 16:17:20 -0800 Subject: Input: tc3589x-keypad - fix keymap size The keymap size used by tc3589x is too low, leading to the driver overwriting other people's memory. Fix this by making the driver use the automatically allocated keymap provided by matrix_keypad_build_keymap() instead of allocating one on its own. Signed-off-by: Rabin Vincent Signed-off-by: Dmitry Torokhov --- drivers/input/keyboard/tc3589x-keypad.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/input/keyboard/tc3589x-keypad.c b/drivers/input/keyboard/tc3589x-keypad.c index 2fb0d76..208de7cb 100644 --- a/drivers/input/keyboard/tc3589x-keypad.c +++ b/drivers/input/keyboard/tc3589x-keypad.c @@ -70,8 +70,6 @@ #define TC3589x_EVT_INT_CLR 0x2 #define TC3589x_KBD_INT_CLR 0x1 -#define TC3589x_KBD_KEYMAP_SIZE 64 - /** * struct tc_keypad - data structure used by keypad driver * @tc3589x: pointer to tc35893 @@ -88,7 +86,7 @@ struct tc_keypad { const struct tc3589x_keypad_platform_data *board; unsigned int krow; unsigned int kcol; - unsigned short keymap[TC3589x_KBD_KEYMAP_SIZE]; + unsigned short *keymap; bool keypad_stopped; }; @@ -338,12 +336,14 @@ static int tc3589x_keypad_probe(struct platform_device *pdev) error = matrix_keypad_build_keymap(plat->keymap_data, NULL, TC3589x_MAX_KPROW, TC3589x_MAX_KPCOL, - keypad->keymap, input); + NULL, input); if (error) { dev_err(&pdev->dev, "Failed to build keymap\n"); goto err_free_mem; } + keypad->keymap = input->keycode; + input_set_capability(input, EV_MSC, MSC_SCAN); if (!plat->no_autorepeat) __set_bit(EV_REP, input->evbit); -- cgit v1.1 From f94352f8db97b9a3b3c1ec45f6fef1400880168a Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 3 Mar 2013 20:19:07 -0800 Subject: Input: ads7864 - check return value of regulator enable At least print a warning if we can't power the device up. Signed-off-by: Mark Brown Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/ads7846.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 4f702b3..434c3df 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -236,7 +236,12 @@ static void __ads7846_disable(struct ads7846 *ts) /* Must be called with ts->lock held */ static void __ads7846_enable(struct ads7846 *ts) { - regulator_enable(ts->reg); + int error; + + error = regulator_enable(ts->reg); + if (error != 0) + dev_err(&ts->spi->dev, "Failed to enable supply: %d\n", error); + ads7846_restart(ts); } -- cgit v1.1 From 4b7d293c64fde133cc2b669d0d7637b8a4c6d62f Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sun, 3 Mar 2013 20:21:30 -0800 Subject: Input: mms114 - Fix regulator enable and disable paths When it uses regulators the mms114 driver checks to see if it managed to acquire regulators and ignores errors. This is not the intended usage and not great style in general. Since the driver already refuses to probe if it fails to allocate the regulators simply make the enable and disable calls unconditional and add appropriate error handling, including adding cleanup of the regulators if setup_reg() fails. Signed-off-by: Mark Brown Acked-by: Joonyoung Shim Signed-off-by: Dmitry Torokhov --- drivers/input/touchscreen/mms114.c | 34 +++++++++++++++++++++++++--------- 1 file changed, 25 insertions(+), 9 deletions(-) diff --git a/drivers/input/touchscreen/mms114.c b/drivers/input/touchscreen/mms114.c index 4a29ddf..1443532 100644 --- a/drivers/input/touchscreen/mms114.c +++ b/drivers/input/touchscreen/mms114.c @@ -314,15 +314,27 @@ static int mms114_start(struct mms114_data *data) struct i2c_client *client = data->client; int error; - if (data->core_reg) - regulator_enable(data->core_reg); - if (data->io_reg) - regulator_enable(data->io_reg); + error = regulator_enable(data->core_reg); + if (error) { + dev_err(&client->dev, "Failed to enable avdd: %d\n", error); + return error; + } + + error = regulator_enable(data->io_reg); + if (error) { + dev_err(&client->dev, "Failed to enable vdd: %d\n", error); + regulator_disable(data->core_reg); + return error; + } + mdelay(MMS114_POWERON_DELAY); error = mms114_setup_regs(data); - if (error < 0) + if (error < 0) { + regulator_disable(data->io_reg); + regulator_disable(data->core_reg); return error; + } if (data->pdata->cfg_pin) data->pdata->cfg_pin(true); @@ -335,16 +347,20 @@ static int mms114_start(struct mms114_data *data) static void mms114_stop(struct mms114_data *data) { struct i2c_client *client = data->client; + int error; disable_irq(client->irq); if (data->pdata->cfg_pin) data->pdata->cfg_pin(false); - if (data->io_reg) - regulator_disable(data->io_reg); - if (data->core_reg) - regulator_disable(data->core_reg); + error = regulator_disable(data->io_reg); + if (error) + dev_warn(&client->dev, "Failed to disable vdd: %d\n", error); + + error = regulator_disable(data->core_reg); + if (error) + dev_warn(&client->dev, "Failed to disable avdd: %d\n", error); } static int mms114_input_open(struct input_dev *dev) -- cgit v1.1 From e1c36595bedc2e1b4112f01256cb30f4d9f9ae46 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Sun, 10 Mar 2013 22:19:00 -0400 Subject: ext4: fix WARN_ON from ext4_releasepage() ext4_releasepage() warns when it is passed a page with PageChecked set. However this can correctly happen when invalidate_inode_pages2_range() invalidates pages - and we should fail the release in that case. Since the page was dirty anyway, it won't be discarded and no harm has happened but it's good to be safe. Also remove bogus page_has_buffers() check - we are guaranteed page has buffers in this function. Reported-by: Zheng Liu Tested-by: Zheng Liu Signed-off-by: "Theodore Ts'o" Signed-off-by: Jan Kara --- fs/ext4/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4f1d54a..117a9e7 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3018,8 +3018,8 @@ static int ext4_releasepage(struct page *page, gfp_t wait) trace_ext4_releasepage(page); - WARN_ON(PageChecked(page)); - if (!page_has_buffers(page)) + /* Page has dirty journalled data -> cannot release */ + if (PageChecked(page)) return 0; if (journal) return jbd2_journal_try_to_free_buffers(journal, page, wait); -- cgit v1.1 From e3d85c366089015805f175324bb1780249f44669 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sun, 10 Mar 2013 22:21:49 -0400 Subject: ext4: remove unused variable in ext4_free_blocks() Remove unused variable 'freed' in ext4_free_blocks(). Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/mballoc.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 7bb713a..75e05f3a 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4464,7 +4464,6 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode, struct buffer_head *bitmap_bh = NULL; struct super_block *sb = inode->i_sb; struct ext4_group_desc *gdp; - unsigned long freed = 0; unsigned int overflow; ext4_grpblk_t bit; struct buffer_head *gd_bh; @@ -4672,8 +4671,6 @@ do_more: ext4_mb_unload_buddy(&e4b); - freed += count; - if (!(flags & EXT4_FREE_BLOCKS_NO_QUOT_UPDATE)) dquot_free_block(inode, EXT4_C2B(sbi, count_clusters)); -- cgit v1.1 From bb8b20ed94bc69120e31399c43cb336300dea109 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sun, 10 Mar 2013 22:28:09 -0400 Subject: ext4: do not use yield() Using yield() is strongly discouraged (see sched/core.c) especially since we can just use cond_resched(). Replace all use of yield() with cond_resched(). Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/inode.c | 2 +- fs/ext4/mballoc.c | 8 ++------ 2 files changed, 3 insertions(+), 7 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 117a9e7..48fc023 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1352,7 +1352,7 @@ repeat: ei->i_da_metadata_calc_last_lblock = save_last_lblock; spin_unlock(&ei->i_block_reservation_lock); if (ext4_should_retry_alloc(inode->i_sb, &retries)) { - yield(); + cond_resched(); goto repeat; } dquot_release_reservation_block(inode, EXT4_C2B(sbi, 1)); diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 75e05f3a..8b2ea9f 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -3692,11 +3692,7 @@ repeat: if (free < needed && busy) { busy = 0; ext4_unlock_group(sb, group); - /* - * Yield the CPU here so that we don't get soft lockup - * in non preempt case. - */ - yield(); + cond_resched(); goto repeat; } @@ -4246,7 +4242,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, ext4_claim_free_clusters(sbi, ar->len, ar->flags)) { /* let others to free the space */ - yield(); + cond_resched(); ar->len = ar->len >> 1; } if (!ar->len) { -- cgit v1.1 From 395816623d4f99b77fd53d6a537906ce25a08768 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Mon, 11 Mar 2013 10:44:40 +0800 Subject: ARM: imx: pll1_sys should be an initial on clk We always boot from PLL1, so let's have pll1_sys in the clks_init_on list to have clk prepare/enable use count match the hardware status, so that drivers managing pll1_sys like cpufreq can get the use count right from the start. Reported-by: Dirk Behme Signed-off-by: Shawn Guo --- arch/arm/mach-imx/clk-imx6q.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 7b025ee..2f9ff93 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -172,7 +172,7 @@ static struct clk *clk[clk_max]; static struct clk_onecell_data clk_data; static enum mx6q_clks const clks_init_on[] __initconst = { - mmdc_ch0_axi, rom, + mmdc_ch0_axi, rom, pll1_sys, }; static struct clk_div_table clk_enet_ref_table[] = { -- cgit v1.1 From 232ec8720d4e45405e37144c67053042c6b886d3 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sun, 10 Mar 2013 22:46:30 -0400 Subject: ext4: update reserved space after the 'correction' Currently in ext4_ext_map_blocks() in delayed allocation writeback we would update the reservation and after that check whether we claimed cluster outside of the range of the allocation and if so, we'll give the block back to the reservation pool. However this also means that if the number of reserved data block dropped to zero before the correction, we would release all the metadata reservation as well, however we might still need it because the we're not done with the delayed allocation and there might be more blocks to come. This will result in error messages such as: EXT4-fs warning (device sdb): ext4_da_update_reserve_space:361: ino 12, allocated 1 with only 0 reserved metadata blocks (releasing 1 blocks with reserved 1 data blocks) This will only happen on bigalloc file system and it can be easily reproduced using fiemap-tester from xfstests like this: ./src/fiemap-tester -m DHDHDHDHD -S -p0 /mnt/test/file Or using xfstests such as 225. Fix this by doing the correction first and updating the reservation after that so that we do not accidentally decrease i_reserved_data_blocks to zero. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" --- fs/ext4/extents.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 69df02f..bd69e90 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4165,9 +4165,6 @@ got_allocated_blocks: } } else { BUG_ON(allocated_clusters < reserved_clusters); - /* We will claim quota for all newly allocated blocks.*/ - ext4_da_update_reserve_space(inode, allocated_clusters, - 1); if (reserved_clusters < allocated_clusters) { struct ext4_inode_info *ei = EXT4_I(inode); int reservation = allocated_clusters - @@ -4218,6 +4215,15 @@ got_allocated_blocks: ei->i_reserved_data_blocks += reservation; spin_unlock(&ei->i_block_reservation_lock); } + /* + * We will claim quota for all newly allocated blocks. + * We're updating the reserved space *after* the + * correction above so we do not accidentally free + * all the metadata reservation because we might + * actually need it later on. + */ + ext4_da_update_reserve_space(inode, allocated_clusters, + 1); } } -- cgit v1.1 From 386ad67c9ac043890121c066186883d1640348a4 Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Sun, 10 Mar 2013 22:50:00 -0400 Subject: ext4: reserve metadata block for every delayed write Currently we only reserve space (data+metadata) in delayed allocation if we're allocating from new cluster (which is always in non-bigalloc file system) which is ok for data blocks, because we reserve the whole cluster. However we have to reserve metadata for every delayed block we're going to write because every block could potentially require metedata block when we need to grow the extent tree. Signed-off-by: Lukas Czerner --- fs/ext4/inode.c | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 61 insertions(+), 2 deletions(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 48fc023..65bbc93 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1305,6 +1305,55 @@ static int ext4_journalled_write_end(struct file *file, } /* + * Reserve a metadata for a single block located at lblock + */ +static int ext4_da_reserve_metadata(struct inode *inode, ext4_lblk_t lblock) +{ + int retries = 0; + struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb); + struct ext4_inode_info *ei = EXT4_I(inode); + unsigned int md_needed; + ext4_lblk_t save_last_lblock; + int save_len; + + /* + * recalculate the amount of metadata blocks to reserve + * in order to allocate nrblocks + * worse case is one extent per block + */ +repeat: + spin_lock(&ei->i_block_reservation_lock); + /* + * ext4_calc_metadata_amount() has side effects, which we have + * to be prepared undo if we fail to claim space. + */ + save_len = ei->i_da_metadata_calc_len; + save_last_lblock = ei->i_da_metadata_calc_last_lblock; + md_needed = EXT4_NUM_B2C(sbi, + ext4_calc_metadata_amount(inode, lblock)); + trace_ext4_da_reserve_space(inode, md_needed); + + /* + * We do still charge estimated metadata to the sb though; + * we cannot afford to run out of free blocks. + */ + if (ext4_claim_free_clusters(sbi, md_needed, 0)) { + ei->i_da_metadata_calc_len = save_len; + ei->i_da_metadata_calc_last_lblock = save_last_lblock; + spin_unlock(&ei->i_block_reservation_lock); + if (ext4_should_retry_alloc(inode->i_sb, &retries)) { + cond_resched(); + goto repeat; + } + return -ENOSPC; + } + ei->i_reserved_meta_blocks += md_needed; + spin_unlock(&ei->i_block_reservation_lock); + + return 0; /* success */ +} + +/* * Reserve a single cluster located at lblock */ static int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock) @@ -1940,8 +1989,11 @@ add_delayed: * XXX: __block_prepare_write() unmaps passed block, * is it OK? */ - /* If the block was allocated from previously allocated cluster, - * then we dont need to reserve it again. */ + /* + * If the block was allocated from previously allocated cluster, + * then we don't need to reserve it again. However we still need + * to reserve metadata for every block we're going to write. + */ if (!(map->m_flags & EXT4_MAP_FROM_CLUSTER)) { ret = ext4_da_reserve_space(inode, iblock); if (ret) { @@ -1949,6 +2001,13 @@ add_delayed: retval = ret; goto out_unlock; } + } else { + ret = ext4_da_reserve_metadata(inode, iblock); + if (ret) { + /* not enough space to reserve */ + retval = ret; + goto out_unlock; + } } ret = ext4_es_insert_extent(inode, map->m_lblk, map->m_len, -- cgit v1.1 From 66efdc71d95887b652a742a5dae51fa834d71465 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 8 Mar 2013 18:11:17 +0100 Subject: ALSA: seq: Fix missing error handling in snd_seq_timer_open() snd_seq_timer_open() didn't catch the whole error path but let through if the timer id is a slave. This may lead to Oops by accessing the uninitialized pointer. BUG: unable to handle kernel NULL pointer dereference at 00000000000002ae IP: [] snd_seq_timer_open+0xe7/0x130 PGD 785cd067 PUD 76964067 PMD 0 Oops: 0002 [#4] SMP CPU 0 Pid: 4288, comm: trinity-child7 Tainted: G D W 3.9.0-rc1+ #100 Bochs Bochs RIP: 0010:[] [] snd_seq_timer_open+0xe7/0x130 RSP: 0018:ffff88006ece7d38 EFLAGS: 00010246 RAX: 0000000000000286 RBX: ffff88007851b400 RCX: 0000000000000000 RDX: 000000000000ffff RSI: ffff88006ece7d58 RDI: ffff88006ece7d38 RBP: ffff88006ece7d98 R08: 000000000000000a R09: 000000000000fffe R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8800792c5400 R14: 0000000000e8f000 R15: 0000000000000007 FS: 00007f7aaa650700(0000) GS:ffff88007f800000(0000) GS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000000002ae CR3: 000000006efec000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process trinity-child7 (pid: 4288, threadinfo ffff88006ece6000, task ffff880076a8a290) Stack: 0000000000000286 ffffffff828f2be0 ffff88006ece7d58 ffffffff810f354d 65636e6575716573 2065756575712072 ffff8800792c0030 0000000000000000 ffff88006ece7d98 ffff8800792c5400 ffff88007851b400 ffff8800792c5520 Call Trace: [] ? trace_hardirqs_on+0xd/0x10 [] snd_seq_queue_timer_open+0x29/0x70 [] snd_seq_ioctl_set_queue_timer+0xda/0x120 [] snd_seq_do_ioctl+0x9b/0xd0 [] snd_seq_ioctl+0x10/0x20 [] do_vfs_ioctl+0x522/0x570 [] ? file_has_perm+0x83/0xa0 [] ? trace_hardirqs_on+0xd/0x10 [] sys_ioctl+0x5d/0xa0 [] ? trace_hardirqs_on_thunk+0x3a/0x3f [] system_call_fastpath+0x16/0x1b Reported-and-tested-by: Tommi Rantala Cc: Signed-off-by: Takashi Iwai --- sound/core/seq/seq_timer.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/core/seq/seq_timer.c b/sound/core/seq/seq_timer.c index 160b1bd..24d44b2 100644 --- a/sound/core/seq/seq_timer.c +++ b/sound/core/seq/seq_timer.c @@ -290,10 +290,10 @@ int snd_seq_timer_open(struct snd_seq_queue *q) tid.device = SNDRV_TIMER_GLOBAL_SYSTEM; err = snd_timer_open(&t, str, &tid, q->queue); } - if (err < 0) { - snd_printk(KERN_ERR "seq fatal error: cannot create timer (%i)\n", err); - return err; - } + } + if (err < 0) { + snd_printk(KERN_ERR "seq fatal error: cannot create timer (%i)\n", err); + return err; } t->callback = snd_seq_timer_interrupt; t->callback_data = q; -- cgit v1.1 From aaaf9cf71c43f42285f2b1a5b54c9306f3cc3150 Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 6 Feb 2013 17:23:50 +0100 Subject: drivers/i2c: remove !S390 dependency, add missing GENERIC_HARDIRQS dependencies Remove !S390 dependency from i2c Kconfig, since s390 now supports PCI, HAS_IOMEM and HAS_DMA, however we need to add a couple of GENERIC_HARDIRQS dependecies to fix compile and link errors like these: ERROR: "devm_request_threaded_irq" [drivers/i2c/i2c-smbus.ko] undefined! ERROR: "devm_request_threaded_irq" [drivers/i2c/busses/i2c-ocores.ko] undefined! Cc: Wolfram Sang Cc: Jean Delvare Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- drivers/i2c/Kconfig | 2 +- drivers/i2c/busses/Kconfig | 6 ++++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig index 46cde098..e380c6e 100644 --- a/drivers/i2c/Kconfig +++ b/drivers/i2c/Kconfig @@ -4,7 +4,6 @@ menuconfig I2C tristate "I2C support" - depends on !S390 select RT_MUTEXES ---help--- I2C (pronounce: I-squared-C) is a slow serial bus protocol used in @@ -76,6 +75,7 @@ config I2C_HELPER_AUTO config I2C_SMBUS tristate "SMBus-specific protocols" if !I2C_HELPER_AUTO + depends on GENERIC_HARDIRQS help Say Y here if you want support for SMBus extensions to the I2C specification. At the moment, the only supported extension is diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig index a3725de..adfee98 100644 --- a/drivers/i2c/busses/Kconfig +++ b/drivers/i2c/busses/Kconfig @@ -114,7 +114,7 @@ config I2C_I801 config I2C_ISCH tristate "Intel SCH SMBus 1.0" - depends on PCI + depends on PCI && GENERIC_HARDIRQS select LPC_SCH help Say Y here if you want to use SMBus controller on the Intel SCH @@ -543,6 +543,7 @@ config I2C_NUC900 config I2C_OCORES tristate "OpenCores I2C Controller" + depends on GENERIC_HARDIRQS help If you say yes to this option, support will be included for the OpenCores I2C controller. For details see @@ -777,7 +778,7 @@ config I2C_DIOLAN_U2C config I2C_PARPORT tristate "Parallel port adapter" - depends on PARPORT + depends on PARPORT && GENERIC_HARDIRQS select I2C_ALGOBIT select I2C_SMBUS help @@ -802,6 +803,7 @@ config I2C_PARPORT config I2C_PARPORT_LIGHT tristate "Parallel port adapter (light)" + depends on GENERIC_HARDIRQS select I2C_ALGOBIT select I2C_SMBUS help -- cgit v1.1 From 52319b457cd78aa891f5947cf2237dd5f6a4c52d Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Fri, 8 Mar 2013 09:29:34 +0100 Subject: s390/kdump: Do not add standby memory for kdump Standby memory that is located outside [0,OLDMEM_SIZE] is currently used by the s390 memory detection. This leads to additional memory consumption due to allocation of page structures. To fix this, we now do not add standby memory if the kernel is started in kdump mode. Signed-off-by: Michael Holzheu Signed-off-by: Martin Schwidefsky --- drivers/s390/char/sclp_cmd.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c index 30a2255..cd79838 100644 --- a/drivers/s390/char/sclp_cmd.c +++ b/drivers/s390/char/sclp_cmd.c @@ -627,6 +627,8 @@ static int __init sclp_detect_standby_memory(void) struct read_storage_sccb *sccb; int i, id, assigned, rc; + if (OLDMEM_BASE) /* No standby memory in kdump mode */ + return 0; if (!early_read_info_sccb_valid) return 0; if ((sclp_facilities & 0xe00000000000ULL) != 0xe00000000000ULL) -- cgit v1.1 From bc077320f8f6449197f4010d6774afab7bb998b2 Mon Sep 17 00:00:00 2001 From: Marco Stornelli Date: Sat, 20 Oct 2012 12:02:59 +0200 Subject: hostfs: fix a not needed double check With the commit 3be2be0a32c18b0fd6d623cda63174a332ca0de1 we removed vmtruncate, but actaully there is no need to call inode_newsize_ok() because the checks are already done in inode_change_ok() at the begin of the function. Signed-off-by: Marco Stornelli Signed-off-by: Richard Weinberger --- fs/hostfs/hostfs_kern.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index fbabb90..178b90c 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -845,15 +845,8 @@ int hostfs_setattr(struct dentry *dentry, struct iattr *attr) return err; if ((attr->ia_valid & ATTR_SIZE) && - attr->ia_size != i_size_read(inode)) { - int error; - - error = inode_newsize_ok(inode, attr->ia_size); - if (error) - return error; - + attr->ia_size != i_size_read(inode)) truncate_setsize(inode, attr->ia_size); - } setattr_copy(inode, attr); mark_inode_dirty(inode); -- cgit v1.1 From 55ea1cfab24e37a347f1beae9f0b6724cad18f6b Mon Sep 17 00:00:00 2001 From: Paul Chavent Date: Thu, 6 Dec 2012 16:25:05 +0100 Subject: net : enable tx time stamping in the vde driver. This new version moves the skb_tx_timestamp in the main uml driver. This should avoid the need to call this function in each transport (vde, slirp, tuntap, ...). It also add support for ethtool get_ts_info. Signed-off-by: Paul Chavent Acked-by: Richard Cochran Signed-off-by: Richard Weinberger --- arch/um/drivers/net_kern.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c index d8926c3..39f1862 100644 --- a/arch/um/drivers/net_kern.c +++ b/arch/um/drivers/net_kern.c @@ -218,6 +218,7 @@ static int uml_net_start_xmit(struct sk_buff *skb, struct net_device *dev) spin_lock_irqsave(&lp->lock, flags); len = (*lp->write)(lp->fd, skb, lp); + skb_tx_timestamp(skb); if (len == skb->len) { dev->stats.tx_packets++; @@ -281,6 +282,7 @@ static void uml_net_get_drvinfo(struct net_device *dev, static const struct ethtool_ops uml_net_ethtool_ops = { .get_drvinfo = uml_net_get_drvinfo, .get_link = ethtool_op_get_link, + .get_ts_info = ethtool_op_get_ts_info, }; static void uml_net_user_timer_expire(unsigned long _conn) -- cgit v1.1 From fdfa4c952844fce881df8c76de9c7180cbe913ab Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Sun, 30 Dec 2012 01:37:30 +0300 Subject: um: add missing declaration of 'getrlimit()' and friends arch/um/os-Linux/start_up.c: In function 'check_coredump_limit': arch/um/os-Linux/start_up.c:338:16: error: storage size of 'lim' isn't known arch/um/os-Linux/start_up.c:339:2: error: implicit declaration of function 'getrlimit' [-Werror=implicit-function-declaration] Signed-off-by: Sergei Trofimovich CC: Jeff Dike CC: Richard Weinberger CC: Al Viro CC: user-mode-linux-devel@lists.sourceforge.net CC: user-mode-linux-user@lists.sourceforge.net CC: linux-kernel@vger.kernel.org Signed-off-by: Richard Weinberger --- arch/um/os-Linux/start_up.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index da4b9e9..337518c 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -15,6 +15,8 @@ #include #include #include +#include +#include #include #include #include -- cgit v1.1 From 72383d43b223c410fc61d9e905690b9b9ba9d418 Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Sun, 30 Dec 2012 01:37:31 +0300 Subject: um: fix build failure due to mess-up of sig_info protorype MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/um/os-Linux/signal.c:18:8: error: conflicting types for 'sig_info' In file included from /home/slyfox/linux-2.6/arch/um/os-Linux/signal.c:12:0: arch/um/include/shared/as-layout.h:64:15: note: previous declaration of 'sig_info' was here Signed-off-by: Sergei Trofimovich CC: Jeff Dike CC: Richard Weinberger CC: "Martin Pärtel" CC: Al Viro CC: user-mode-linux-devel@lists.sourceforge.net CC: user-mode-linux-user@lists.sourceforge.net CC: linux-kernel@vger.kernel.org Signed-off-by: Richard Weinberger --- arch/um/os-Linux/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c index b1469fe..9d9f1b4 100644 --- a/arch/um/os-Linux/signal.c +++ b/arch/um/os-Linux/signal.c @@ -15,7 +15,7 @@ #include #include "internal.h" -void (*sig_info[NSIG])(int, siginfo_t *, struct uml_pt_regs *) = { +void (*sig_info[NSIG])(int, struct siginfo *, struct uml_pt_regs *) = { [SIGTRAP] = relay_signal, [SIGFPE] = relay_signal, [SIGILL] = relay_signal, -- cgit v1.1 From cc4f02486c09977ccbe3ce2276aca5608a44ca00 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 11 Mar 2013 10:03:42 +0100 Subject: um: Use tty_port_operations->destruct As we setup the SIGWINCH handler in tty_port_operations->activate it makes sense to tear down it in ->destruct. Signed-off-by: Richard Weinberger --- arch/um/drivers/line.c | 26 ++++++++++++++------------ arch/um/drivers/ssl.c | 1 - arch/um/drivers/stdio_console.c | 1 - 3 files changed, 14 insertions(+), 14 deletions(-) diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index f1b3857..232243a 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -315,8 +315,22 @@ static int line_activate(struct tty_port *port, struct tty_struct *tty) return 0; } +static void unregister_winch(struct tty_struct *tty); + +static void line_destruct(struct tty_port *port) +{ + struct tty_struct *tty = tty_port_tty_get(port); + struct line *line = tty->driver_data; + + if (line->sigio) { + unregister_winch(tty); + line->sigio = 0; + } +} + static const struct tty_port_operations line_port_ops = { .activate = line_activate, + .destruct = line_destruct, }; int line_open(struct tty_struct *tty, struct file *filp) @@ -340,18 +354,6 @@ int line_install(struct tty_driver *driver, struct tty_struct *tty, return 0; } -static void unregister_winch(struct tty_struct *tty); - -void line_cleanup(struct tty_struct *tty) -{ - struct line *line = tty->driver_data; - - if (line->sigio) { - unregister_winch(tty); - line->sigio = 0; - } -} - void line_close(struct tty_struct *tty, struct file * filp) { struct line *line = tty->driver_data; diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c index 16fdd0a..b8d14fa 100644 --- a/arch/um/drivers/ssl.c +++ b/arch/um/drivers/ssl.c @@ -105,7 +105,6 @@ static const struct tty_operations ssl_ops = { .throttle = line_throttle, .unthrottle = line_unthrottle, .install = ssl_install, - .cleanup = line_cleanup, .hangup = line_hangup, }; diff --git a/arch/um/drivers/stdio_console.c b/arch/um/drivers/stdio_console.c index 827777a..7b361f3 100644 --- a/arch/um/drivers/stdio_console.c +++ b/arch/um/drivers/stdio_console.c @@ -110,7 +110,6 @@ static const struct tty_operations console_ops = { .set_termios = line_set_termios, .throttle = line_throttle, .unthrottle = line_unthrottle, - .cleanup = line_cleanup, .hangup = line_hangup, }; -- cgit v1.1 From 2116bda6ad937d7acb6e2316fd9e65ad6ca01d42 Mon Sep 17 00:00:00 2001 From: Richard Weinberger Date: Mon, 11 Mar 2013 10:05:45 +0100 Subject: um: Use tty_port in SIGWINCH handler The tty below tty_port might get destroyed by the tty layer while we hold a reference to it. So we have to carry tty_port around... Signed-off-by: Richard Weinberger --- arch/um/drivers/chan.h | 2 +- arch/um/drivers/chan_kern.c | 4 ++-- arch/um/drivers/chan_user.c | 12 ++++++------ arch/um/drivers/chan_user.h | 6 +++--- arch/um/drivers/line.c | 16 ++++++++++------ 5 files changed, 22 insertions(+), 18 deletions(-) diff --git a/arch/um/drivers/chan.h b/arch/um/drivers/chan.h index 78f1b89..c512b03 100644 --- a/arch/um/drivers/chan.h +++ b/arch/um/drivers/chan.h @@ -37,7 +37,7 @@ extern int console_write_chan(struct chan *chan, const char *buf, extern int console_open_chan(struct line *line, struct console *co); extern void deactivate_chan(struct chan *chan, int irq); extern void reactivate_chan(struct chan *chan, int irq); -extern void chan_enable_winch(struct chan *chan, struct tty_struct *tty); +extern void chan_enable_winch(struct chan *chan, struct tty_port *port); extern int enable_chan(struct line *line); extern void close_chan(struct line *line); extern int chan_window_size(struct line *line, diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index 15c553c..80b47cb 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -122,10 +122,10 @@ static int open_chan(struct list_head *chans) return err; } -void chan_enable_winch(struct chan *chan, struct tty_struct *tty) +void chan_enable_winch(struct chan *chan, struct tty_port *port) { if (chan && chan->primary && chan->ops->winch) - register_winch(chan->fd, tty); + register_winch(chan->fd, port); } static void line_timer_cb(struct work_struct *work) diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index 9be670a..3fd7c3e 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -216,7 +216,7 @@ static int winch_thread(void *arg) } } -static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out, +static int winch_tramp(int fd, struct tty_port *port, int *fd_out, unsigned long *stack_out) { struct winch_data data; @@ -271,7 +271,7 @@ static int winch_tramp(int fd, struct tty_struct *tty, int *fd_out, return err; } -void register_winch(int fd, struct tty_struct *tty) +void register_winch(int fd, struct tty_port *port) { unsigned long stack; int pid, thread, count, thread_fd = -1; @@ -281,17 +281,17 @@ void register_winch(int fd, struct tty_struct *tty) return; pid = tcgetpgrp(fd); - if (is_skas_winch(pid, fd, tty)) { - register_winch_irq(-1, fd, -1, tty, 0); + if (is_skas_winch(pid, fd, port)) { + register_winch_irq(-1, fd, -1, port, 0); return; } if (pid == -1) { - thread = winch_tramp(fd, tty, &thread_fd, &stack); + thread = winch_tramp(fd, port, &thread_fd, &stack); if (thread < 0) return; - register_winch_irq(thread_fd, fd, thread, tty, stack); + register_winch_irq(thread_fd, fd, thread, port, stack); count = write(thread_fd, &c, sizeof(c)); if (count != sizeof(c)) diff --git a/arch/um/drivers/chan_user.h b/arch/um/drivers/chan_user.h index dc693298..03f1b56 100644 --- a/arch/um/drivers/chan_user.h +++ b/arch/um/drivers/chan_user.h @@ -38,10 +38,10 @@ extern int generic_window_size(int fd, void *unused, unsigned short *rows_out, unsigned short *cols_out); extern void generic_free(void *data); -struct tty_struct; -extern void register_winch(int fd, struct tty_struct *tty); +struct tty_port; +extern void register_winch(int fd, struct tty_port *port); extern void register_winch_irq(int fd, int tty_fd, int pid, - struct tty_struct *tty, unsigned long stack); + struct tty_port *port, unsigned long stack); #define __channel_help(fn, prefix) \ __uml_help(fn, prefix "[0-9]*=\n" \ diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 232243a..be541cf 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -305,7 +305,7 @@ static int line_activate(struct tty_port *port, struct tty_struct *tty) return ret; if (!line->sigio) { - chan_enable_winch(line->chan_out, tty); + chan_enable_winch(line->chan_out, port); line->sigio = 1; } @@ -603,7 +603,7 @@ struct winch { int fd; int tty_fd; int pid; - struct tty_struct *tty; + struct tty_port *port; unsigned long stack; struct work_struct work; }; @@ -657,7 +657,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) goto out; } } - tty = winch->tty; + tty = tty_port_tty_get(winch->port); if (tty != NULL) { line = tty->driver_data; if (line != NULL) { @@ -665,6 +665,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) &tty->winsize.ws_col); kill_pgrp(tty->pgrp, SIGWINCH, 1); } + tty_kref_put(tty); } out: if (winch->fd != -1) @@ -672,7 +673,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) return IRQ_HANDLED; } -void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty, +void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port, unsigned long stack) { struct winch *winch; @@ -687,7 +688,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty, .fd = fd, .tty_fd = tty_fd, .pid = pid, - .tty = tty, + .port = port, .stack = stack }); if (um_request_irq(WINCH_IRQ, fd, IRQ_READ, winch_interrupt, @@ -716,15 +717,18 @@ static void unregister_winch(struct tty_struct *tty) { struct list_head *ele, *next; struct winch *winch; + struct tty_struct *wtty; spin_lock(&winch_handler_lock); list_for_each_safe(ele, next, &winch_handlers) { winch = list_entry(ele, struct winch, list); - if (winch->tty == tty) { + wtty = tty_port_tty_get(winch->port); + if (wtty == tty) { free_winch(winch); break; } + tty_kref_put(wtty); } spin_unlock(&winch_handler_lock); } -- cgit v1.1 From cb16b91a449afd01b85ec4e59f30449d11c4acd7 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Thu, 7 Mar 2013 17:35:53 +0800 Subject: s390: Fix a header dependencies related build error Commit 877c685607925238e302cd3aa38788dca6c1b226 ("perf: Remove include of cgroup.h from perf_event.h") caused this build failure if PERF_EVENTS is enabled: In file included from arch/s390/include/asm/perf_event.h:9:0, from include/linux/perf_event.h:24, from kernel/events/ring_buffer.c:12: arch/s390/include/asm/cpu_mf.h: In function 'qctri': arch/s390/include/asm/cpu_mf.h:61:12: error: 'EINVAL' undeclared (first use in this function) cpu_mf.h had an implicit errno.h dependency, which was added indirectly via cgroups.h but not anymore. Add it explicitly. Reported-by: Fengguang Wu Tested-by: Fengguang Wu Signed-off-by: Li Zefan Cc: Martin Schwidefsky Cc: Heiko Carstens Link: http://lkml.kernel.org/r/51385F79.7000106@huawei.com Signed-off-by: Ingo Molnar --- arch/s390/include/asm/cpu_mf.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index 35f0020..c7c9bf6 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -12,6 +12,7 @@ #ifndef _ASM_S390_CPU_MF_H #define _ASM_S390_CPU_MF_H +#include #include #define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ -- cgit v1.1 From 66e4afc77f76653460d7eb31ec793506ada1ad33 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 11 Mar 2013 12:40:31 +0200 Subject: usb: gadget: pxa25x: fix disconnect reporting when commit 6166c24 (usb: gadget: pxa25x_udc: convert to udc_start/udc_stop) converted this driver to udc_start/udc_stop, it failed to consider the fact that stop_activity() is called from disconnect interrupt. Fix the problem so that gadget drivers know about proper disconnect sequences. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/pxa25x_udc.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 9aa9dd5..d0f3748 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -1303,6 +1303,10 @@ stop_activity(struct pxa25x_udc *dev, struct usb_gadget_driver *driver) } del_timer_sync(&dev->timer); + /* report disconnect; the driver is already quiesced */ + if (driver) + driver->disconnect(&dev->gadget); + /* re-init driver-visible data structures */ udc_reinit(dev); } -- cgit v1.1 From 76950e6e54ccfc98a25b501dbb1bc879cce1aa29 Mon Sep 17 00:00:00 2001 From: Allen Pais Date: Tue, 5 Mar 2013 23:47:59 +0000 Subject: sparc64: correctly recognize SPARC64-X chips The following patch adds support for correctly recognizing SPARC-X chips. cpu : Unknown SUN4V CPU fpu : Unknown SUN4V FPU pmu : Unknown SUN4V PMU Signed-off-by: Katayama Yoshihiro Signed-off-by: Allen Pais Signed-off-by: David S. Miller --- arch/sparc/include/asm/spitfire.h | 1 + arch/sparc/kernel/cpu.c | 6 ++++++ arch/sparc/kernel/head_64.S | 25 +++++++++++++++++++++++-- 3 files changed, 30 insertions(+), 2 deletions(-) diff --git a/arch/sparc/include/asm/spitfire.h b/arch/sparc/include/asm/spitfire.h index d06a2660..6b67e50 100644 --- a/arch/sparc/include/asm/spitfire.h +++ b/arch/sparc/include/asm/spitfire.h @@ -45,6 +45,7 @@ #define SUN4V_CHIP_NIAGARA3 0x03 #define SUN4V_CHIP_NIAGARA4 0x04 #define SUN4V_CHIP_NIAGARA5 0x05 +#define SUN4V_CHIP_SPARC64X 0x8a #define SUN4V_CHIP_UNKNOWN 0xff #ifndef __ASSEMBLY__ diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c index a6c94a2..5c51258 100644 --- a/arch/sparc/kernel/cpu.c +++ b/arch/sparc/kernel/cpu.c @@ -493,6 +493,12 @@ static void __init sun4v_cpu_probe(void) sparc_pmu_type = "niagara5"; break; + case SUN4V_CHIP_SPARC64X: + sparc_cpu_type = "SPARC64-X"; + sparc_fpu_type = "SPARC64-X integrated FPU"; + sparc_pmu_type = "sparc64-x"; + break; + default: printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n", prom_cpu_compatible); diff --git a/arch/sparc/kernel/head_64.S b/arch/sparc/kernel/head_64.S index 2feb15c..26b706a 100644 --- a/arch/sparc/kernel/head_64.S +++ b/arch/sparc/kernel/head_64.S @@ -134,6 +134,8 @@ prom_niagara_prefix: .asciz "SUNW,UltraSPARC-T" prom_sparc_prefix: .asciz "SPARC-" +prom_sparc64x_prefix: + .asciz "SPARC64-X" .align 4 prom_root_compatible: .skip 64 @@ -412,7 +414,7 @@ sun4v_chip_type: cmp %g2, 'T' be,pt %xcc, 70f cmp %g2, 'M' - bne,pn %xcc, 4f + bne,pn %xcc, 49f nop 70: ldub [%g1 + 7], %g2 @@ -425,7 +427,7 @@ sun4v_chip_type: cmp %g2, '5' be,pt %xcc, 5f mov SUN4V_CHIP_NIAGARA5, %g4 - ba,pt %xcc, 4f + ba,pt %xcc, 49f nop 91: sethi %hi(prom_cpu_compatible), %g1 @@ -439,6 +441,25 @@ sun4v_chip_type: mov SUN4V_CHIP_NIAGARA2, %g4 4: + /* Athena */ + sethi %hi(prom_cpu_compatible), %g1 + or %g1, %lo(prom_cpu_compatible), %g1 + sethi %hi(prom_sparc64x_prefix), %g7 + or %g7, %lo(prom_sparc64x_prefix), %g7 + mov 9, %g3 +41: ldub [%g7], %g2 + ldub [%g1], %g4 + cmp %g2, %g4 + bne,pn %icc, 49f + add %g7, 1, %g7 + subcc %g3, 1, %g3 + bne,pt %xcc, 41b + add %g1, 1, %g1 + mov SUN4V_CHIP_SPARC64X, %g4 + ba,pt %xcc, 5f + nop + +49: mov SUN4V_CHIP_UNKNOWN, %g4 5: sethi %hi(sun4v_chip_type), %g2 or %g2, %lo(sun4v_chip_type), %g2 -- cgit v1.1 From 0c52db7e681678f9b2a3fb96c3dd557168b4e025 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 11 Mar 2013 14:16:00 +0100 Subject: ARM: imx: fix typo "DEBUG_IMX50_IMX53_UART" Commit f8c95fe (ARM: imx: support DEBUG_LL uart port selection for all i.MX SoCs) had a typo that DEBUG_IMX50_IMX53_UART should be DEBUG_IMX53_UART. Signed-off-by: Paul Bolle Signed-off-by: Shawn Guo --- arch/arm/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index acdddda..ecfcdba 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -492,7 +492,7 @@ config DEBUG_IMX_UART_PORT DEBUG_IMX31_UART || \ DEBUG_IMX35_UART || \ DEBUG_IMX51_UART || \ - DEBUG_IMX50_IMX53_UART || \ + DEBUG_IMX53_UART || \ DEBUG_IMX6Q_UART default 1 help -- cgit v1.1 From 1540c85b176180e5e0b312dd98db7f438baf8a24 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Thu, 7 Mar 2013 16:47:23 +0530 Subject: ARC: make allyesconfig build breakages CC drivers/mmc/host/mmc_spi.o drivers/mmc/host/mmc_spi.c:118: error: redefinition of 'struct scratch' make[3]: *** [drivers/mmc/host/mmc_spi.o] Error 1 make[2]: *** [drivers/mmc/host] Error 2 make[1]: *** [drivers/mmc] Error 2 make: *** [drivers] Error 2 CC arch/arc/kernel/kgdb.o In file included from include/linux/kgdb.h:20, from arch/arc/kernel/kgdb.c:11: /home/vineetg/arc/k.org/arc-port/arch/arc/include/asm/kgdb.h:34: warning: 'struct pt_regs' declared inside parameter list /home/vineetg/arc/k.org/arc-port/arch/arc/include/asm/kgdb.h:34: warning: its scope is only this definition or declaration, which is probably not what you want arch/arc/kernel/kgdb.c:172: error: conflicting types for 'kgdb_trap' CC arch/arc/kernel/kgdb.o arch/arc/kernel/kgdb.c: In function 'pt_regs_to_gdb_regs': arch/arc/kernel/kgdb.c:62: error: dereferencing pointer to incomplete type Signed-off-by: Vineet Gupta --- arch/arc/include/asm/kgdb.h | 6 ++---- arch/arc/include/uapi/asm/ptrace.h | 4 ++-- arch/arc/kernel/kgdb.c | 1 + 3 files changed, 5 insertions(+), 6 deletions(-) diff --git a/arch/arc/include/asm/kgdb.h b/arch/arc/include/asm/kgdb.h index f3c4934..4930957 100644 --- a/arch/arc/include/asm/kgdb.h +++ b/arch/arc/include/asm/kgdb.h @@ -13,7 +13,7 @@ #ifdef CONFIG_KGDB -#include +#include /* to ensure compatibility with Linux 2.6.35, we don't implement the get/set * register API yet */ @@ -53,9 +53,7 @@ enum arc700_linux_regnums { }; #else -static inline void kgdb_trap(struct pt_regs *regs, int param) -{ -} +#define kgdb_trap(regs, param) #endif #endif /* __ARC_KGDB_H__ */ diff --git a/arch/arc/include/uapi/asm/ptrace.h b/arch/arc/include/uapi/asm/ptrace.h index 6afa4f7..30333ce 100644 --- a/arch/arc/include/uapi/asm/ptrace.h +++ b/arch/arc/include/uapi/asm/ptrace.h @@ -28,14 +28,14 @@ */ struct user_regs_struct { - struct scratch { + struct { long pad; long bta, lp_start, lp_end, lp_count; long status32, ret, blink, fp, gp; long r12, r11, r10, r9, r8, r7, r6, r5, r4, r3, r2, r1, r0; long sp; } scratch; - struct callee { + struct { long pad; long r25, r24, r23, r22, r21, r20; long r19, r18, r17, r16, r15, r14, r13; diff --git a/arch/arc/kernel/kgdb.c b/arch/arc/kernel/kgdb.c index 2888ba5..52bdc83 100644 --- a/arch/arc/kernel/kgdb.c +++ b/arch/arc/kernel/kgdb.c @@ -9,6 +9,7 @@ */ #include +#include #include #include -- cgit v1.1 From 8ff14bbc6a2083e83c6d387d025fb67ba639807c Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 6 Mar 2013 14:33:27 +0530 Subject: ARC: ABIv3: Print the correct ABI ver Signed-off-by: Vineet Gupta --- arch/arc/kernel/setup.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arc/kernel/setup.c b/arch/arc/kernel/setup.c index dc0f968..2d95ac0 100644 --- a/arch/arc/kernel/setup.c +++ b/arch/arc/kernel/setup.c @@ -232,10 +232,8 @@ char *arc_extn_mumbojumbo(int cpu_id, char *buf, int len) n += scnprintf(buf + n, len - n, "\n"); -#ifdef _ASM_GENERIC_UNISTD_H n += scnprintf(buf + n, len - n, - "OS ABI [v2]\t: asm-generic/{unistd,stat,fcntl}\n"); -#endif + "OS ABI [v3]\t: no-legacy-syscalls\n"); return buf; } -- cgit v1.1 From 180d406e4948faee6e63781f3e062f40ec7c6fc3 Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Mon, 4 Mar 2013 16:01:35 +0530 Subject: ARC: ABIv3: fork/vfork wrappers not needed in "no-legacy-syscall" ABI When switching to clone() only ABI - I missed out pruning the low level asm syscall wrappers Signed-off-by: Vineet Gupta --- arch/arc/include/asm/syscalls.h | 2 -- arch/arc/kernel/entry.S | 25 ------------------------- arch/arc/kernel/sys.c | 2 -- 3 files changed, 29 deletions(-) diff --git a/arch/arc/include/asm/syscalls.h b/arch/arc/include/asm/syscalls.h index e53a534..dd785be 100644 --- a/arch/arc/include/asm/syscalls.h +++ b/arch/arc/include/asm/syscalls.h @@ -16,8 +16,6 @@ #include int sys_clone_wrapper(int, int, int, int, int); -int sys_fork_wrapper(void); -int sys_vfork_wrapper(void); int sys_cacheflush(uint32_t, uint32_t uint32_t); int sys_arc_settls(void *); int sys_arc_gettls(void); diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index ef6800b..b9d875a 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -792,31 +792,6 @@ ARC_EXIT ret_from_fork ;################### Special Sys Call Wrappers ########################## -; TBD: call do_fork directly from here -ARC_ENTRY sys_fork_wrapper - SAVE_CALLEE_SAVED_USER - bl @sys_fork - DISCARD_CALLEE_SAVED_USER - - GET_CURR_THR_INFO_FLAGS r10 - btst r10, TIF_SYSCALL_TRACE - bnz tracesys_exit - - b ret_from_system_call -ARC_EXIT sys_fork_wrapper - -ARC_ENTRY sys_vfork_wrapper - SAVE_CALLEE_SAVED_USER - bl @sys_vfork - DISCARD_CALLEE_SAVED_USER - - GET_CURR_THR_INFO_FLAGS r10 - btst r10, TIF_SYSCALL_TRACE - bnz tracesys_exit - - b ret_from_system_call -ARC_EXIT sys_vfork_wrapper - ARC_ENTRY sys_clone_wrapper SAVE_CALLEE_SAVED_USER bl @sys_clone diff --git a/arch/arc/kernel/sys.c b/arch/arc/kernel/sys.c index f6bdd07..9d6c1ca 100644 --- a/arch/arc/kernel/sys.c +++ b/arch/arc/kernel/sys.c @@ -6,8 +6,6 @@ #include #define sys_clone sys_clone_wrapper -#define sys_fork sys_fork_wrapper -#define sys_vfork sys_vfork_wrapper #undef __SYSCALL #define __SYSCALL(nr, call) [nr] = (call), -- cgit v1.1 From 3e64fe5b21852375f2f53e7244ba697f1fee2fcf Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Mon, 11 Mar 2013 07:05:42 -0700 Subject: fs: Limit sys_mount to only request filesystem modules. (Part 3) Somehow I failed to add the MODULE_ALIAS_FS for cifs, hostfs, hpfs, squashfs, and udf despite what I thought were my careful checks :( Add them now. Signed-off-by: "Eric W. Biederman" --- fs/cifs/cifsfs.c | 1 + fs/hostfs/hostfs_kern.c | 1 + fs/hpfs/super.c | 1 + fs/squashfs/super.c | 1 + fs/udf/super.c | 1 + 5 files changed, 5 insertions(+) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 1a052c0..3cf8a15 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -777,6 +777,7 @@ struct file_system_type cifs_fs_type = { .kill_sb = cifs_kill_sb, /* .fs_flags */ }; +MODULE_ALIAS_FS("cifs"); const struct inode_operations cifs_dir_inode_ops = { .create = cifs_create, .atomic_open = cifs_atomic_open, diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c index fbabb90..e3c6d50 100644 --- a/fs/hostfs/hostfs_kern.c +++ b/fs/hostfs/hostfs_kern.c @@ -993,6 +993,7 @@ static struct file_system_type hostfs_type = { .kill_sb = hostfs_kill_sb, .fs_flags = 0, }; +MODULE_ALIAS_FS("hostfs"); static int __init init_hostfs(void) { diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index a307622..a0617e7 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -688,6 +688,7 @@ static struct file_system_type hpfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("hpfs"); static int __init init_hpfs_fs(void) { diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index 260e392..60553a9 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -489,6 +489,7 @@ static struct file_system_type squashfs_fs_type = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV }; +MODULE_ALIAS_FS("squashfs"); static const struct super_operations squashfs_super_ops = { .alloc_inode = squashfs_alloc_inode, diff --git a/fs/udf/super.c b/fs/udf/super.c index bc5b30a..9ac4057 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -118,6 +118,7 @@ static struct file_system_type udf_fstype = { .kill_sb = kill_block_super, .fs_flags = FS_REQUIRES_DEV, }; +MODULE_ALIAS_FS("udf"); static struct kmem_cache *udf_inode_cachep; -- cgit v1.1 From f0e68fc3caf677e834f7bd0f601800e686b56c98 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 22 Feb 2013 13:22:39 +0000 Subject: thermal: rcar: fix missing unlock on error in rcar_thermal_update_temp() Add the missing unlock before return from function rcar_thermal_update_temp() in the error handling case. Signed-off-by: Wei Yongjun Acked-by: Kuninori Morimoto Signed-off-by: Zhang Rui --- drivers/thermal/rcar_thermal.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 28f0919..04a5566 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -145,6 +145,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) struct device *dev = rcar_priv_to_dev(priv); int i; int ctemp, old, new; + int ret = -EINVAL; mutex_lock(&priv->lock); @@ -174,7 +175,7 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) if (!ctemp) { dev_err(dev, "thermal sensor was broken\n"); - return -EINVAL; + goto err_out_unlock; } /* @@ -192,10 +193,10 @@ static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) dev_dbg(dev, "thermal%d %d -> %d\n", priv->id, priv->ctemp, ctemp); priv->ctemp = ctemp; - + ret = 0; +err_out_unlock: mutex_unlock(&priv->lock); - - return 0; + return ret; } static int rcar_thermal_get_temp(struct thermal_zone_device *zone, -- cgit v1.1 From 6bc51b662241738ac292ffa021b345c2aa604230 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 06:45:32 +0000 Subject: Thermal: dove: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: Sachin Kamat Cc: Andrew Lunn Reviewed-by: Thierry Reding Signed-off-by: Zhang Rui --- drivers/thermal/dove_thermal.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/thermal/dove_thermal.c b/drivers/thermal/dove_thermal.c index 7b0bfa0..3078c40 100644 --- a/drivers/thermal/dove_thermal.c +++ b/drivers/thermal/dove_thermal.c @@ -143,22 +143,18 @@ static int dove_thermal_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - priv->sensor = devm_request_and_ioremap(&pdev->dev, res); - if (!priv->sensor) { - dev_err(&pdev->dev, "Failed to request_ioremap memory\n"); - return -EADDRNOTAVAIL; - } + priv->sensor = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->sensor)) + return PTR_ERR(priv->sensor); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); if (!res) { dev_err(&pdev->dev, "Failed to get platform resource\n"); return -ENODEV; } - priv->control = devm_request_and_ioremap(&pdev->dev, res); - if (!priv->control) { - dev_err(&pdev->dev, "Failed to request_ioremap memory\n"); - return -EADDRNOTAVAIL; - } + priv->control = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->control)) + return PTR_ERR(priv->control); ret = dove_init_sensor(priv); if (ret) { -- cgit v1.1 From 5095526faf38472bf04af919797a1f01a0ccb558 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 06:45:33 +0000 Subject: Thermal: rcar: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: Sachin Kamat Cc: Kuninori Morimoto Reviewed-by: Thierry Reding Signed-off-by: Zhang Rui --- drivers/thermal/rcar_thermal.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index 04a5566..ab51814 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -400,11 +400,9 @@ static int rcar_thermal_probe(struct platform_device *pdev) /* * rcar_has_irq_support() will be enabled */ - common->base = devm_request_and_ioremap(dev, res); - if (!common->base) { - dev_err(dev, "Unable to ioremap thermal register\n"); - return -ENOMEM; - } + common->base = devm_ioremap_resource(dev, res); + if (IS_ERR(common->base)) + return PTR_ERR(common->base); /* enable temperature comparation */ rcar_thermal_common_write(common, ENR, 0x00030303); @@ -423,11 +421,9 @@ static int rcar_thermal_probe(struct platform_device *pdev) return -ENOMEM; } - priv->base = devm_request_and_ioremap(dev, res); - if (!priv->base) { - dev_err(dev, "Unable to ioremap priv register\n"); - return -ENOMEM; - } + priv->base = devm_ioremap_resource(dev, res); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); priv->common = common; priv->id = i; -- cgit v1.1 From aa3b5d222da5922ab1883eba3e9d8f92ad148155 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 4 Mar 2013 06:45:34 +0000 Subject: Thermal: kirkwood: Convert to devm_ioremap_resource() Use the newly introduced devm_ioremap_resource() instead of devm_request_and_ioremap() which provides more consistent error handling. devm_ioremap_resource() provides its own error messages; so all explicit error messages can be removed from the failure code paths. Signed-off-by: Sachin Kamat Cc: Nobuhiro Iwamatsu Reviewed-by: Thierry Reding Acked-by: Nobuhiro Iwamatsu Signed-off-by: Zhang Rui --- drivers/thermal/kirkwood_thermal.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/thermal/kirkwood_thermal.c b/drivers/thermal/kirkwood_thermal.c index 65cb4f0..e5500ed 100644 --- a/drivers/thermal/kirkwood_thermal.c +++ b/drivers/thermal/kirkwood_thermal.c @@ -85,11 +85,9 @@ static int kirkwood_thermal_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - priv->sensor = devm_request_and_ioremap(&pdev->dev, res); - if (!priv->sensor) { - dev_err(&pdev->dev, "Failed to request_ioremap memory\n"); - return -EADDRNOTAVAIL; - } + priv->sensor = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->sensor)) + return PTR_ERR(priv->sensor); thermal = thermal_zone_device_register("kirkwood_thermal", 0, 0, priv, &ops, NULL, 0, 0); -- cgit v1.1 From fb84d9907f0ff0e3f7d70d55039ddf0f78d2a472 Mon Sep 17 00:00:00 2001 From: Devendra Naga Date: Mon, 4 Mar 2013 16:52:47 +0000 Subject: thermal: rcar_thermal: propagate return value of thermal_zone_device_register thermal_zone_device_register returns a value contained in the pointer itself use PTR_ERR to obtain the address and return it at the end. Signed-off-by: Devendra Naga Signed-off-by: Zhang Rui --- drivers/thermal/rcar_thermal.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index ab51814..2cc5b61 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -364,6 +364,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) struct resource *res, *irq; int mres = 0; int i; + int ret = -ENODEV; int idle = IDLE_INTERVAL; common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL); @@ -438,6 +439,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) idle); if (IS_ERR(priv->zone)) { dev_err(dev, "can't register thermal zone\n"); + ret = PTR_ERR(priv->zone); goto error_unregister; } @@ -457,7 +459,7 @@ error_unregister: rcar_thermal_for_each_priv(priv, common) thermal_zone_device_unregister(priv->zone); - return -ENODEV; + return ret; } static int rcar_thermal_remove(struct platform_device *pdev) -- cgit v1.1 From 043e4652bf3378883e7c0db38fa47fa8e2558f9c Mon Sep 17 00:00:00 2001 From: Devendra Naga Date: Mon, 4 Mar 2013 16:52:48 +0000 Subject: thermal: exynos_thermal: return a proper error code while thermal_zone_device_register fail. we are returning EINVAL while the thermal_zone_device_register function fail. instead we can use the return value from the thermal_zone_device_register by using PTR_ERR. Signed-off-by: Devendra Naga Signed-off-by: Zhang Rui --- drivers/thermal/exynos_thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thermal/exynos_thermal.c b/drivers/thermal/exynos_thermal.c index e04ebd8..46568c0 100644 --- a/drivers/thermal/exynos_thermal.c +++ b/drivers/thermal/exynos_thermal.c @@ -476,7 +476,7 @@ static int exynos_register_thermal(struct thermal_sensor_conf *sensor_conf) if (IS_ERR(th_zone->therm_dev)) { pr_err("Failed to register thermal zone device\n"); - ret = -EINVAL; + ret = PTR_ERR(th_zone->therm_dev); goto err_unregister; } th_zone->mode = THERMAL_DEVICE_ENABLED; -- cgit v1.1 From be3101c23394af59694c8a2aae6d07f5da62fea5 Mon Sep 17 00:00:00 2001 From: "Matwey V. Kornilov" Date: Sat, 9 Mar 2013 13:57:32 +0400 Subject: usb: cp210x new Vendor/Device IDs This patch adds support for the Lake Shore Cryotronics devices to the CP210x driver. These lines are ported from cp210x driver distributed by Lake Shore web site: http://www.lakeshore.com/Documents/Lake%20Shore%20cp210x-3.0.0.tar.gz and licensed under the terms of GPLv2. Moreover, I've tested this changes with Lake Shore 335 in my labs. Signed-off-by: Matwey V. Kornilov Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index edc0f0d..67088ce 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -150,6 +150,25 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x1BE3, 0x07A6) }, /* WAGO 750-923 USB Service Cable */ { USB_DEVICE(0x1E29, 0x0102) }, /* Festo CPX-USB */ { USB_DEVICE(0x1E29, 0x0501) }, /* Festo CMSP */ + { USB_DEVICE(0x1FB9, 0x0100) }, /* Lake Shore Model 121 Current Source */ + { USB_DEVICE(0x1FB9, 0x0200) }, /* Lake Shore Model 218A Temperature Monitor */ + { USB_DEVICE(0x1FB9, 0x0201) }, /* Lake Shore Model 219 Temperature Monitor */ + { USB_DEVICE(0x1FB9, 0x0202) }, /* Lake Shore Model 233 Temperature Transmitter */ + { USB_DEVICE(0x1FB9, 0x0203) }, /* Lake Shore Model 235 Temperature Transmitter */ + { USB_DEVICE(0x1FB9, 0x0300) }, /* Lake Shore Model 335 Temperature Controller */ + { USB_DEVICE(0x1FB9, 0x0301) }, /* Lake Shore Model 336 Temperature Controller */ + { USB_DEVICE(0x1FB9, 0x0302) }, /* Lake Shore Model 350 Temperature Controller */ + { USB_DEVICE(0x1FB9, 0x0303) }, /* Lake Shore Model 371 AC Bridge */ + { USB_DEVICE(0x1FB9, 0x0400) }, /* Lake Shore Model 411 Handheld Gaussmeter */ + { USB_DEVICE(0x1FB9, 0x0401) }, /* Lake Shore Model 425 Gaussmeter */ + { USB_DEVICE(0x1FB9, 0x0402) }, /* Lake Shore Model 455A Gaussmeter */ + { USB_DEVICE(0x1FB9, 0x0403) }, /* Lake Shore Model 475A Gaussmeter */ + { USB_DEVICE(0x1FB9, 0x0404) }, /* Lake Shore Model 465 Three Axis Gaussmeter */ + { USB_DEVICE(0x1FB9, 0x0600) }, /* Lake Shore Model 625A Superconducting MPS */ + { USB_DEVICE(0x1FB9, 0x0601) }, /* Lake Shore Model 642A Magnet Power Supply */ + { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */ + { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */ + { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */ { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */ { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */ { USB_DEVICE(0x3195, 0xF281) }, /* Link Instruments MSO-28 */ -- cgit v1.1 From 6987a6dabfc40222ef767f67b57212fe3a0225fb Mon Sep 17 00:00:00 2001 From: Malcolm Priestley Date: Mon, 18 Feb 2013 19:54:18 +0000 Subject: staging: vt6656: Fix oops on resume from suspend. Remove usb_put_dev from vt6656_suspend and usb_get_dev from vt6566_resume. These are not normally in suspend/resume functions. Signed-off-by: Malcolm Priestley Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/main_usb.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c index d5f53e1..a5063a6 100644 --- a/drivers/staging/vt6656/main_usb.c +++ b/drivers/staging/vt6656/main_usb.c @@ -669,8 +669,6 @@ static int vt6656_suspend(struct usb_interface *intf, pm_message_t message) if (device->flags & DEVICE_FLAGS_OPENED) device_close(device->dev); - usb_put_dev(interface_to_usbdev(intf)); - return 0; } @@ -681,8 +679,6 @@ static int vt6656_resume(struct usb_interface *intf) if (!device || !device->dev) return -ENODEV; - usb_get_dev(interface_to_usbdev(intf)); - if (!(device->flags & DEVICE_FLAGS_OPENED)) device_open(device->dev); -- cgit v1.1 From d49c3d61cfdb33165d2760817ec9601d277575d4 Mon Sep 17 00:00:00 2001 From: Kumar Amit Mehta Date: Fri, 22 Feb 2013 10:07:03 -0800 Subject: staging: comedi: drivers: usbdux.c: fix DMA buffers on stack fix for instances of DMA buffer on stack(being passed to usb_control_msg) for the USB-DUX-D Board driver. Signed-off-by: Kumar Amit Mehta Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/usbdux.c | 31 +++++++++++++++++++------------ 1 file changed, 19 insertions(+), 12 deletions(-) diff --git a/drivers/staging/comedi/drivers/usbdux.c b/drivers/staging/comedi/drivers/usbdux.c index 1a0062a..6aac1f6 100644 --- a/drivers/staging/comedi/drivers/usbdux.c +++ b/drivers/staging/comedi/drivers/usbdux.c @@ -730,10 +730,14 @@ static void usbduxsub_ao_IsocIrq(struct urb *urb) static int usbduxsub_start(struct usbduxsub *usbduxsub) { int errcode = 0; - uint8_t local_transfer_buffer[16]; + uint8_t *local_transfer_buffer; + + local_transfer_buffer = kmalloc(1, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to zero */ - local_transfer_buffer[0] = 0; + *local_transfer_buffer = 0; errcode = usb_control_msg(usbduxsub->usbdev, /* create a pipe for a control transfer */ usb_sndctrlpipe(usbduxsub->usbdev, 0), @@ -751,22 +755,25 @@ static int usbduxsub_start(struct usbduxsub *usbduxsub) 1, /* Timeout */ BULK_TIMEOUT); - if (errcode < 0) { + if (errcode < 0) dev_err(&usbduxsub->interface->dev, "comedi_: control msg failed (start)\n"); - return errcode; - } - return 0; + + kfree(local_transfer_buffer); + return errcode; } static int usbduxsub_stop(struct usbduxsub *usbduxsub) { int errcode = 0; + uint8_t *local_transfer_buffer; - uint8_t local_transfer_buffer[16]; + local_transfer_buffer = kmalloc(1, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to one */ - local_transfer_buffer[0] = 1; + *local_transfer_buffer = 1; errcode = usb_control_msg(usbduxsub->usbdev, usb_sndctrlpipe(usbduxsub->usbdev, 0), /* bRequest, "Firmware" */ @@ -781,12 +788,12 @@ static int usbduxsub_stop(struct usbduxsub *usbduxsub) 1, /* Timeout */ BULK_TIMEOUT); - if (errcode < 0) { + if (errcode < 0) dev_err(&usbduxsub->interface->dev, "comedi_: control msg failed (stop)\n"); - return errcode; - } - return 0; + + kfree(local_transfer_buffer); + return errcode; } static int usbduxsub_upload(struct usbduxsub *usbduxsub, -- cgit v1.1 From 161f440c8d915181b34f5a64f52a543beca6b1e9 Mon Sep 17 00:00:00 2001 From: Kumar Amit Mehta Date: Fri, 22 Feb 2013 10:07:30 -0800 Subject: staging: comedi: drivers: usbduxfast.c: fix for DMA buffers on stack fix for instances of DMA buffer on stack(being passed to usb_control_msg) for the USB-DUXfast Board driver. Signed-off-by: Kumar Amit Mehta Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/usbduxfast.c | 30 +++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/drivers/staging/comedi/drivers/usbduxfast.c b/drivers/staging/comedi/drivers/usbduxfast.c index 4bf5dd0..1ba0e3d 100644 --- a/drivers/staging/comedi/drivers/usbduxfast.c +++ b/drivers/staging/comedi/drivers/usbduxfast.c @@ -436,10 +436,14 @@ static void usbduxfastsub_ai_Irq(struct urb *urb) static int usbduxfastsub_start(struct usbduxfastsub_s *udfs) { int ret; - unsigned char local_transfer_buffer[16]; + unsigned char *local_transfer_buffer; + + local_transfer_buffer = kmalloc(1, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to zero */ - local_transfer_buffer[0] = 0; + *local_transfer_buffer = 0; /* bRequest, "Firmware" */ ret = usb_control_msg(udfs->usbdev, usb_sndctrlpipe(udfs->usbdev, 0), USBDUXFASTSUB_FIRMWARE, @@ -450,22 +454,25 @@ static int usbduxfastsub_start(struct usbduxfastsub_s *udfs) local_transfer_buffer, 1, /* Length */ EZTIMEOUT); /* Timeout */ - if (ret < 0) { + if (ret < 0) dev_err(&udfs->interface->dev, "control msg failed (start)\n"); - return ret; - } - return 0; + kfree(local_transfer_buffer); + return ret; } static int usbduxfastsub_stop(struct usbduxfastsub_s *udfs) { int ret; - unsigned char local_transfer_buffer[16]; + unsigned char *local_transfer_buffer; + + local_transfer_buffer = kmalloc(1, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to one */ - local_transfer_buffer[0] = 1; + *local_transfer_buffer = 1; /* bRequest, "Firmware" */ ret = usb_control_msg(udfs->usbdev, usb_sndctrlpipe(udfs->usbdev, 0), USBDUXFASTSUB_FIRMWARE, @@ -474,13 +481,12 @@ static int usbduxfastsub_stop(struct usbduxfastsub_s *udfs) 0x0000, /* Index */ local_transfer_buffer, 1, /* Length */ EZTIMEOUT); /* Timeout */ - if (ret < 0) { + if (ret < 0) dev_err(&udfs->interface->dev, "control msg failed (stop)\n"); - return ret; - } - return 0; + kfree(local_transfer_buffer); + return ret; } static int usbduxfastsub_upload(struct usbduxfastsub_s *udfs, -- cgit v1.1 From 47b1be5c0f4ed4991f3d956dbd7ba69cb5bc521f Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Wed, 20 Feb 2013 10:57:01 +0800 Subject: staging: imx/drm: request irq only after adding the crtc If the bootloader already enabled the display, the interrupt handler will be called as soon as it is registered. If the CRTC is not already added at this time, the call to imx_drm_handle_vblank will result in a NULL pointer dereference. The patch fixes a kernel panic [1], which has been on linux-next since Jan 8 [2]. [1] http://thread.gmane.org/gmane.linux.ports.arm.kernel/218858 [2] http://thread.gmane.org/gmane.linux.ports.arm.kernel/208192 Signed-off-by: Philipp Zabel Tested-by: Shawn Guo Signed-off-by: Greg Kroah-Hartman --- drivers/staging/imx-drm/ipuv3-crtc.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/drivers/staging/imx-drm/ipuv3-crtc.c b/drivers/staging/imx-drm/ipuv3-crtc.c index 4b3a019..b028b0d 100644 --- a/drivers/staging/imx-drm/ipuv3-crtc.c +++ b/drivers/staging/imx-drm/ipuv3-crtc.c @@ -483,17 +483,6 @@ static int ipu_get_resources(struct ipu_crtc *ipu_crtc, goto err_out; } - ipu_crtc->irq = ipu_idmac_channel_irq(ipu, ipu_crtc->ipu_ch, - IPU_IRQ_EOF); - ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, 0, - "imx_drm", ipu_crtc); - if (ret < 0) { - dev_err(ipu_crtc->dev, "irq request failed with %d.\n", ret); - goto err_out; - } - - disable_irq(ipu_crtc->irq); - return 0; err_out: ipu_put_resources(ipu_crtc); @@ -504,6 +493,7 @@ err_out: static int ipu_crtc_init(struct ipu_crtc *ipu_crtc, struct ipu_client_platformdata *pdata) { + struct ipu_soc *ipu = dev_get_drvdata(ipu_crtc->dev->parent); int ret; ret = ipu_get_resources(ipu_crtc, pdata); @@ -522,6 +512,17 @@ static int ipu_crtc_init(struct ipu_crtc *ipu_crtc, goto err_put_resources; } + ipu_crtc->irq = ipu_idmac_channel_irq(ipu, ipu_crtc->ipu_ch, + IPU_IRQ_EOF); + ret = devm_request_irq(ipu_crtc->dev, ipu_crtc->irq, ipu_irq_handler, 0, + "imx_drm", ipu_crtc); + if (ret < 0) { + dev_err(ipu_crtc->dev, "irq request failed with %d.\n", ret); + goto err_put_resources; + } + + disable_irq(ipu_crtc->irq); + return 0; err_put_resources: -- cgit v1.1 From b5ae11463a67a5e468dd67482ab2308994da9b2b Mon Sep 17 00:00:00 2001 From: Kumar Amit Mehta Date: Thu, 21 Feb 2013 22:07:08 -0800 Subject: staging: comedi: drivers: usbduxsigma.c: fix DMA buffers on stack This patch fixes an instance of DMA buffer on stack(being passed to usb_control_msg)for the USB-DUXsigma Board driver. Found using smatch. Signed-off-by: Kumar Amit Mehta Reviewed-by: Dan Carpenter Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/usbduxsigma.c | 27 +++++++++++++++++---------- 1 file changed, 17 insertions(+), 10 deletions(-) diff --git a/drivers/staging/comedi/drivers/usbduxsigma.c b/drivers/staging/comedi/drivers/usbduxsigma.c index d066351..a728c8f 100644 --- a/drivers/staging/comedi/drivers/usbduxsigma.c +++ b/drivers/staging/comedi/drivers/usbduxsigma.c @@ -681,7 +681,11 @@ static void usbduxsub_ao_IsocIrq(struct urb *urb) static int usbduxsub_start(struct usbduxsub *usbduxsub) { int errcode = 0; - uint8_t local_transfer_buffer[16]; + uint8_t *local_transfer_buffer; + + local_transfer_buffer = kmalloc(16, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to zero */ local_transfer_buffer[0] = 0; @@ -702,19 +706,22 @@ static int usbduxsub_start(struct usbduxsub *usbduxsub) 1, /* Timeout */ BULK_TIMEOUT); - if (errcode < 0) { + if (errcode < 0) dev_err(&usbduxsub->interface->dev, "comedi_: control msg failed (start)\n"); - return errcode; - } - return 0; + + kfree(local_transfer_buffer); + return errcode; } static int usbduxsub_stop(struct usbduxsub *usbduxsub) { int errcode = 0; + uint8_t *local_transfer_buffer; - uint8_t local_transfer_buffer[16]; + local_transfer_buffer = kmalloc(16, GFP_KERNEL); + if (!local_transfer_buffer) + return -ENOMEM; /* 7f92 to one */ local_transfer_buffer[0] = 1; @@ -732,12 +739,12 @@ static int usbduxsub_stop(struct usbduxsub *usbduxsub) 1, /* Timeout */ BULK_TIMEOUT); - if (errcode < 0) { + if (errcode < 0) dev_err(&usbduxsub->interface->dev, "comedi_: control msg failed (stop)\n"); - return errcode; - } - return 0; + + kfree(local_transfer_buffer); + return errcode; } static int usbduxsub_upload(struct usbduxsub *usbduxsub, -- cgit v1.1 From aa1e1234826e21197f818ca0abf519775ad4eb5c Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Mon, 4 Mar 2013 20:42:00 +0100 Subject: staging/vt6656: Fix too large integer constant warning on 32-bit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit drivers/staging/vt6656/card.c: In function ‘CARDqGetNextTBTT’: drivers/staging/vt6656/card.c:793: warning: integer constant is too large for ‘unsigned long’ type Commit c7b7cad0d8df823ea063c86a54316bbcbfa04a7c ("staging/vt6656: Fix sparse warning constant 0xffffffff00000000U is so big it is unsigned long") changed the constant to "0xffffffff00000000UL", but that only works on 64-bit. Change it "0xffffffff00000000ULL" to fix it for 32-bit, too. Signed-off-by: Geert Uytterhoeven Reviewed-by: Peter Huewe Signed-off-by: Greg Kroah-Hartman --- drivers/staging/vt6656/card.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/vt6656/card.c b/drivers/staging/vt6656/card.c index 22918a1..d2479b7 100644 --- a/drivers/staging/vt6656/card.c +++ b/drivers/staging/vt6656/card.c @@ -790,7 +790,7 @@ u64 CARDqGetNextTBTT(u64 qwTSF, WORD wBeaconInterval) if ((~uLowNextTBTT) < uLowRemain) qwTSF = ((qwTSF >> 32) + 1) << 32; - qwTSF = (qwTSF & 0xffffffff00000000UL) | + qwTSF = (qwTSF & 0xffffffff00000000ULL) | (u64)(uLowNextTBTT + uLowRemain); return (qwTSF); -- cgit v1.1 From 564c526a1bed5e42b5cd52cfe1752c4296ef17a6 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Tue, 5 Mar 2013 13:13:44 +0000 Subject: staging: comedi: dt9812: use CR_CHAN() for channel number As pointed out by Dan Carpenper in , the dt9812 comedi driver's use of the `chanspec` member of `struct comedi_insn` as a channel number is incorrect. Change it to use `CR_CHAN(insn->chanspec)` as the channel number (where `insn` is a pointer to the `struct comedi_insn` being processed). Reported-by: Dan Carpenter Cc: stable # 3.8 onwards Cc: Anders Blomdell Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/dt9812.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/staging/comedi/drivers/dt9812.c b/drivers/staging/comedi/drivers/dt9812.c index 192cf08..57b4519 100644 --- a/drivers/staging/comedi/drivers/dt9812.c +++ b/drivers/staging/comedi/drivers/dt9812.c @@ -947,12 +947,13 @@ static int dt9812_di_rinsn(struct comedi_device *dev, unsigned int *data) { struct comedi_dt9812 *devpriv = dev->private; + unsigned int channel = CR_CHAN(insn->chanspec); int n; u8 bits = 0; dt9812_digital_in(devpriv->slot, &bits); for (n = 0; n < insn->n; n++) - data[n] = ((1 << insn->chanspec) & bits) != 0; + data[n] = ((1 << channel) & bits) != 0; return n; } @@ -961,12 +962,13 @@ static int dt9812_do_winsn(struct comedi_device *dev, unsigned int *data) { struct comedi_dt9812 *devpriv = dev->private; + unsigned int channel = CR_CHAN(insn->chanspec); int n; u8 bits = 0; dt9812_digital_out_shadow(devpriv->slot, &bits); for (n = 0; n < insn->n; n++) { - u8 mask = 1 << insn->chanspec; + u8 mask = 1 << channel; bits &= ~mask; if (data[n]) @@ -981,13 +983,13 @@ static int dt9812_ai_rinsn(struct comedi_device *dev, unsigned int *data) { struct comedi_dt9812 *devpriv = dev->private; + unsigned int channel = CR_CHAN(insn->chanspec); int n; for (n = 0; n < insn->n; n++) { u16 value = 0; - dt9812_analog_in(devpriv->slot, insn->chanspec, &value, - DT9812_GAIN_1); + dt9812_analog_in(devpriv->slot, channel, &value, DT9812_GAIN_1); data[n] = value; } return n; @@ -998,12 +1000,13 @@ static int dt9812_ao_rinsn(struct comedi_device *dev, unsigned int *data) { struct comedi_dt9812 *devpriv = dev->private; + unsigned int channel = CR_CHAN(insn->chanspec); int n; u16 value; for (n = 0; n < insn->n; n++) { value = 0; - dt9812_analog_out_shadow(devpriv->slot, insn->chanspec, &value); + dt9812_analog_out_shadow(devpriv->slot, channel, &value); data[n] = value; } return n; @@ -1014,10 +1017,11 @@ static int dt9812_ao_winsn(struct comedi_device *dev, unsigned int *data) { struct comedi_dt9812 *devpriv = dev->private; + unsigned int channel = CR_CHAN(insn->chanspec); int n; for (n = 0; n < insn->n; n++) - dt9812_analog_out(devpriv->slot, insn->chanspec, data[n]); + dt9812_analog_out(devpriv->slot, channel, data[n]); return n; } -- cgit v1.1 From ad56edad089b56300fd13bb9eeb7d0424d978239 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Mon, 11 Mar 2013 13:24:56 -0400 Subject: jbd2: fix use after free in jbd2_journal_dirty_metadata() jbd2_journal_dirty_metadata() didn't get a reference to journal_head it was working with. This is OK in most of the cases since the journal head should be attached to a transaction but in rare occasions when we are journalling data, __ext4_journalled_writepage() can race with jbd2_journal_invalidatepage() stripping buffers from a page and thus journal head can be freed under hands of jbd2_journal_dirty_metadata(). Fix the problem by getting own journal head reference in jbd2_journal_dirty_metadata() (and also in jbd2_journal_set_triggers() which can possibly have the same issue). Reported-by: Zheng Liu Signed-off-by: Jan Kara Signed-off-by: "Theodore Ts'o" Cc: stable@vger.kernel.org --- fs/jbd2/transaction.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c index d6ee5ae..325bc01 100644 --- a/fs/jbd2/transaction.c +++ b/fs/jbd2/transaction.c @@ -1065,9 +1065,12 @@ out: void jbd2_journal_set_triggers(struct buffer_head *bh, struct jbd2_buffer_trigger_type *type) { - struct journal_head *jh = bh2jh(bh); + struct journal_head *jh = jbd2_journal_grab_journal_head(bh); + if (WARN_ON(!jh)) + return; jh->b_triggers = type; + jbd2_journal_put_journal_head(jh); } void jbd2_buffer_frozen_trigger(struct journal_head *jh, void *mapped_data, @@ -1119,17 +1122,18 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) { transaction_t *transaction = handle->h_transaction; journal_t *journal = transaction->t_journal; - struct journal_head *jh = bh2jh(bh); + struct journal_head *jh; int ret = 0; - jbd_debug(5, "journal_head %p\n", jh); - JBUFFER_TRACE(jh, "entry"); if (is_handle_aborted(handle)) goto out; - if (!buffer_jbd(bh)) { + jh = jbd2_journal_grab_journal_head(bh); + if (!jh) { ret = -EUCLEAN; goto out; } + jbd_debug(5, "journal_head %p\n", jh); + JBUFFER_TRACE(jh, "entry"); jbd_lock_bh_state(bh); @@ -1220,6 +1224,7 @@ int jbd2_journal_dirty_metadata(handle_t *handle, struct buffer_head *bh) spin_unlock(&journal->j_list_lock); out_unlock_bh: jbd_unlock_bh_state(bh); + jbd2_journal_put_journal_head(jh); out: JBUFFER_TRACE(jh, "exit"); WARN_ON(ret); /* All errors are bugs, so dump the stack */ -- cgit v1.1 From 85323a991d40681023822e86ca95f38a75262026 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Thu, 7 Mar 2013 07:17:25 +0000 Subject: xen: arm: mandate EABI and use generic atomic operations. Rob Herring has observed that c81611c4e96f "xen: event channel arrays are xen_ulong_t and not unsigned long" introduced a compile failure when building without CONFIG_AEABI: /tmp/ccJaIZOW.s: Assembler messages: /tmp/ccJaIZOW.s:831: Error: even register required -- `ldrexd r5,r6,[r4]' Will Deacon pointed out that this is because OABI does not require even base registers for 64-bit values. We can avoid this by simply using the existing atomic64_xchg operation and the same containerof trick as used by the cmpxchg macros. However since this code is used on memory which is shared with the hypervisor we require proper atomic instructions and cannot use the generic atomic64 callbacks (which are based on spinlocks), therefore add a dependency on !GENERIC_ATOMIC64. Since we already depend on !CPU_V6 there isn't much downside to this. While thinking about this we also observed that OABI has different struct alignment requirements to EABI, which is a problem for hypercall argument structs which are shared with the hypervisor and which must be in EABI layout. Since I don't expect people to want to run OABI kernels on Xen depend on CONFIG_AEABI explicitly too (although it also happens to be enforced by the !GENERIC_ATOMIC64 requirement too). Signed-off-by: Ian Campbell Cc: Will Deacon Cc: Rob Herring Acked-by: Stefano Stabellini Cc: Konrad Rzeszutek Wilk Signed-off-by: Konrad Rzeszutek Wilk --- arch/arm/Kconfig | 3 ++- arch/arm/include/asm/xen/events.h | 25 ++++--------------------- 2 files changed, 6 insertions(+), 22 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index a955d89..caf0099 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1866,8 +1866,9 @@ config XEN_DOM0 config XEN bool "Xen guest support on ARM (EXPERIMENTAL)" - depends on ARM && OF + depends on ARM && AEABI && OF depends on CPU_V7 && !CPU_V6 + depends on !GENERIC_ATOMIC64 help Say Y if you want to run Linux in a Virtual Machine on Xen on ARM. diff --git a/arch/arm/include/asm/xen/events.h b/arch/arm/include/asm/xen/events.h index 5c27696..8b1f37b 100644 --- a/arch/arm/include/asm/xen/events.h +++ b/arch/arm/include/asm/xen/events.h @@ -2,6 +2,7 @@ #define _ASM_ARM_XEN_EVENTS_H #include +#include enum ipi_vector { XEN_PLACEHOLDER_VECTOR, @@ -15,26 +16,8 @@ static inline int xen_irqs_disabled(struct pt_regs *regs) return raw_irqs_disabled_flags(regs->ARM_cpsr); } -/* - * We cannot use xchg because it does not support 8-byte - * values. However it is safe to use {ldr,dtd}exd directly because all - * platforms which Xen can run on support those instructions. - */ -static inline xen_ulong_t xchg_xen_ulong(xen_ulong_t *ptr, xen_ulong_t val) -{ - xen_ulong_t oldval; - unsigned int tmp; - - wmb(); - asm volatile("@ xchg_xen_ulong\n" - "1: ldrexd %0, %H0, [%3]\n" - " strexd %1, %2, %H2, [%3]\n" - " teq %1, #0\n" - " bne 1b" - : "=&r" (oldval), "=&r" (tmp) - : "r" (val), "r" (ptr) - : "memory", "cc"); - return oldval; -} +#define xchg_xen_ulong(ptr, val) atomic64_xchg(container_of((ptr), \ + atomic64_t, \ + counter), (val)) #endif /* _ASM_ARM_XEN_EVENTS_H */ -- cgit v1.1 From d2e0bca377dc0f85acd19df465122f361a6c9e99 Mon Sep 17 00:00:00 2001 From: Liu Jinsong Date: Tue, 12 Mar 2013 06:42:16 +0800 Subject: xen/acpi: remove redundant acpi/acpi_drivers.h include It's redundant since linux/acpi.h has include it when CONFIG_ACPI enabled, and when CONFIG_ACPI disabled it will trigger compiling warning In file included from drivers/xen/xen-stub.c:28:0: include/acpi/acpi_drivers.h:103:31: warning: 'struct acpi_device' declared inside parameter list [enabled by default] include/acpi/acpi_drivers.h:103:31: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] include/acpi/acpi_drivers.h:107:43: warning: 'struct acpi_pci_root' declared inside parameter list [enabled by default] Reported-by: Wu Fengguang Signed-off-by: Liu Jinsong Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xen-stub.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/xen/xen-stub.c b/drivers/xen/xen-stub.c index d85e411..bbef194 100644 --- a/drivers/xen/xen-stub.c +++ b/drivers/xen/xen-stub.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #ifdef CONFIG_ACPI -- cgit v1.1 From 0e367ae46503cfe7791460c8ba8434a5d60b2bd5 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 7 Mar 2013 17:32:01 +0000 Subject: xen/blkback: correctly respond to unknown, non-native requests If the frontend is using a non-native protocol (e.g., a 64-bit frontend with a 32-bit backend) and it sent an unrecognized request, the request was not translated and the response would have the incorrect ID. This may cause the frontend driver to behave incorrectly or crash. Since the ID field in the request is always in the same place, regardless of the request type we can get the correct ID and make a valid response (which will report BLKIF_RSP_EOPNOTSUPP). This bug affected 64-bit SLES 11 guests when using a 32-bit backend. This guest does a BLKIF_OP_RESERVED_1 (BLKIF_OP_PACKET in the SLES source) and would crash in blkif_int() as the ID in the response would be invalid. Signed-off-by: David Vrabel Cc: stable@vger.kernel.org Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 31 +++++++++++++++++++++++++++---- drivers/block/xen-blkback/common.h | 25 +++++++++++++++++++++++++ include/xen/interface/io/blkif.h | 10 ++++++++++ 3 files changed, 62 insertions(+), 4 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 6d1cc3d..1a0faf6 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -679,6 +679,16 @@ static int dispatch_discard_io(struct xen_blkif *blkif, return err; } +static int dispatch_other_io(struct xen_blkif *blkif, + struct blkif_request *req, + struct pending_req *pending_req) +{ + free_req(pending_req); + make_response(blkif, req->u.other.id, req->operation, + BLKIF_RSP_EOPNOTSUPP); + return -EIO; +} + static void xen_blk_drain_io(struct xen_blkif *blkif) { atomic_set(&blkif->drain, 1); @@ -800,17 +810,30 @@ __do_block_io_op(struct xen_blkif *blkif) /* Apply all sanity checks to /private copy/ of request. */ barrier(); - if (unlikely(req.operation == BLKIF_OP_DISCARD)) { + + switch (req.operation) { + case BLKIF_OP_READ: + case BLKIF_OP_WRITE: + case BLKIF_OP_WRITE_BARRIER: + case BLKIF_OP_FLUSH_DISKCACHE: + if (dispatch_rw_block_io(blkif, &req, pending_req)) + goto done; + break; + case BLKIF_OP_DISCARD: free_req(pending_req); if (dispatch_discard_io(blkif, &req)) - break; - } else if (dispatch_rw_block_io(blkif, &req, pending_req)) + goto done; + break; + default: + if (dispatch_other_io(blkif, &req, pending_req)) + goto done; break; + } /* Yield point for this unbounded loop. */ cond_resched(); } - +done: return more_to_do; } diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index 6072390..195278a 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -77,11 +77,18 @@ struct blkif_x86_32_request_discard { uint64_t nr_sectors; } __attribute__((__packed__)); +struct blkif_x86_32_request_other { + uint8_t _pad1; + blkif_vdev_t _pad2; + uint64_t id; /* private guest value, echoed in resp */ +} __attribute__((__packed__)); + struct blkif_x86_32_request { uint8_t operation; /* BLKIF_OP_??? */ union { struct blkif_x86_32_request_rw rw; struct blkif_x86_32_request_discard discard; + struct blkif_x86_32_request_other other; } u; } __attribute__((__packed__)); @@ -113,11 +120,19 @@ struct blkif_x86_64_request_discard { uint64_t nr_sectors; } __attribute__((__packed__)); +struct blkif_x86_64_request_other { + uint8_t _pad1; + blkif_vdev_t _pad2; + uint32_t _pad3; /* offsetof(blkif_..,u.discard.id)==8 */ + uint64_t id; /* private guest value, echoed in resp */ +} __attribute__((__packed__)); + struct blkif_x86_64_request { uint8_t operation; /* BLKIF_OP_??? */ union { struct blkif_x86_64_request_rw rw; struct blkif_x86_64_request_discard discard; + struct blkif_x86_64_request_other other; } u; } __attribute__((__packed__)); @@ -278,6 +293,11 @@ static inline void blkif_get_x86_32_req(struct blkif_request *dst, dst->u.discard.nr_sectors = src->u.discard.nr_sectors; break; default: + /* + * Don't know how to translate this op. Only get the + * ID so failure can be reported to the frontend. + */ + dst->u.other.id = src->u.other.id; break; } } @@ -309,6 +329,11 @@ static inline void blkif_get_x86_64_req(struct blkif_request *dst, dst->u.discard.nr_sectors = src->u.discard.nr_sectors; break; default: + /* + * Don't know how to translate this op. Only get the + * ID so failure can be reported to the frontend. + */ + dst->u.other.id = src->u.other.id; break; } } diff --git a/include/xen/interface/io/blkif.h b/include/xen/interface/io/blkif.h index 01c3d62..ffd4652 100644 --- a/include/xen/interface/io/blkif.h +++ b/include/xen/interface/io/blkif.h @@ -138,11 +138,21 @@ struct blkif_request_discard { uint8_t _pad3; } __attribute__((__packed__)); +struct blkif_request_other { + uint8_t _pad1; + blkif_vdev_t _pad2; /* only for read/write requests */ +#ifdef CONFIG_X86_64 + uint32_t _pad3; /* offsetof(blkif_req..,u.other.id)==8*/ +#endif + uint64_t id; /* private guest value, echoed in resp */ +} __attribute__((__packed__)); + struct blkif_request { uint8_t operation; /* BLKIF_OP_??? */ union { struct blkif_request_rw rw; struct blkif_request_discard discard; + struct blkif_request_other other; } u; } __attribute__((__packed__)); -- cgit v1.1 From 986cacbd26abe5d498be922cd6632f1ec376c271 Mon Sep 17 00:00:00 2001 From: Zoltan Kiss Date: Mon, 11 Mar 2013 16:15:50 +0000 Subject: xen/blkback: Change statistics counter types to unsigned These values shouldn't be negative, but after an overflow their value can turn into negative, if they are signed. xentop can show bogus values in this case. Signed-off-by: Zoltan Kiss Reported-by: Ichiro Ogino Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 4 ++-- drivers/block/xen-blkback/common.h | 14 +++++++------- drivers/block/xen-blkback/xenbus.c | 14 +++++++------- 3 files changed, 16 insertions(+), 16 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 1a0faf6..eaccc22 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -381,8 +381,8 @@ irqreturn_t xen_blkif_be_int(int irq, void *dev_id) static void print_stats(struct xen_blkif *blkif) { - pr_info("xen-blkback (%s): oo %3d | rd %4d | wr %4d | f %4d" - " | ds %4d\n", + pr_info("xen-blkback (%s): oo %3llu | rd %4llu | wr %4llu | f %4llu" + " | ds %4llu\n", current->comm, blkif->st_oo_req, blkif->st_rd_req, blkif->st_wr_req, blkif->st_f_req, blkif->st_ds_req); diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index 195278a..da78346 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -223,13 +223,13 @@ struct xen_blkif { /* statistics */ unsigned long st_print; - int st_rd_req; - int st_wr_req; - int st_oo_req; - int st_f_req; - int st_ds_req; - int st_rd_sect; - int st_wr_sect; + unsigned long long st_rd_req; + unsigned long long st_wr_req; + unsigned long long st_oo_req; + unsigned long long st_f_req; + unsigned long long st_ds_req; + unsigned long long st_rd_sect; + unsigned long long st_wr_sect; wait_queue_head_t waiting_to_free; }; diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index 5e237f6..8bfd1bc 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -230,13 +230,13 @@ int __init xen_blkif_interface_init(void) } \ static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) -VBD_SHOW(oo_req, "%d\n", be->blkif->st_oo_req); -VBD_SHOW(rd_req, "%d\n", be->blkif->st_rd_req); -VBD_SHOW(wr_req, "%d\n", be->blkif->st_wr_req); -VBD_SHOW(f_req, "%d\n", be->blkif->st_f_req); -VBD_SHOW(ds_req, "%d\n", be->blkif->st_ds_req); -VBD_SHOW(rd_sect, "%d\n", be->blkif->st_rd_sect); -VBD_SHOW(wr_sect, "%d\n", be->blkif->st_wr_sect); +VBD_SHOW(oo_req, "%llu\n", be->blkif->st_oo_req); +VBD_SHOW(rd_req, "%llu\n", be->blkif->st_rd_req); +VBD_SHOW(wr_req, "%llu\n", be->blkif->st_wr_req); +VBD_SHOW(f_req, "%llu\n", be->blkif->st_f_req); +VBD_SHOW(ds_req, "%llu\n", be->blkif->st_ds_req); +VBD_SHOW(rd_sect, "%llu\n", be->blkif->st_rd_sect); +VBD_SHOW(wr_sect, "%llu\n", be->blkif->st_wr_sect); static struct attribute *xen_vbdstat_attrs[] = { &dev_attr_oo_req.attr, -- cgit v1.1 From fd5014ad5c80a75713b13a95eb717cc697dda5d5 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 11 Mar 2013 20:01:08 +0200 Subject: usb: musb: core: fix possible build error with randconfig when making commit e574d57 (usb: musb: fix compile warning) I forgot to git add this part of the patch which ended up introducing a possible build error. Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_core.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 13382e0..daec6e0 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1624,8 +1624,6 @@ EXPORT_SYMBOL_GPL(musb_dma_completion); /*-------------------------------------------------------------------------*/ -#ifdef CONFIG_SYSFS - static ssize_t musb_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -1742,8 +1740,6 @@ static const struct attribute_group musb_attr_group = { .attrs = musb_attributes, }; -#endif /* sysfs */ - /* Only used to provide driver mode change events */ static void musb_irq_work(struct work_struct *data) { -- cgit v1.1 From 2d90e63603ac235aecd7d20e234616e0682c8b1f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 19 Feb 2013 09:47:09 -0600 Subject: qcaux: add Franklin U600 4 ports; AT/PPP is standard CDC-ACM. The other three (added by this patch) are QCDM/DIAG, possibly GPS, and unknown. Signed-off-by: Dan Williams Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcaux.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/qcaux.c b/drivers/usb/serial/qcaux.c index 9b1b96f..31f81c3 100644 --- a/drivers/usb/serial/qcaux.c +++ b/drivers/usb/serial/qcaux.c @@ -69,6 +69,7 @@ static struct usb_device_id id_table[] = { { USB_VENDOR_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, 0xff, 0xfd, 0xff) }, /* NMEA */ { USB_VENDOR_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, 0xff, 0xfe, 0xff) }, /* WMC */ { USB_VENDOR_AND_INTERFACE_INFO(UTSTARCOM_VENDOR_ID, 0xff, 0xff, 0xff) }, /* DIAG */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1fac, 0x0151, 0xff, 0xff, 0xff) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); -- cgit v1.1 From f37912039eb04979f269de0a7dc1a601702df51a Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Mon, 25 Feb 2013 12:27:46 -0600 Subject: block: IBM RamSan 70/80 trivial changes. This patch includes trivial changes that were recommended by different members of the Linux Community. Changes include: o Removing the redundant wmb(). o Formatting o Various other little things. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/config.c | 6 ++---- drivers/block/rsxx/core.c | 4 ++-- drivers/block/rsxx/cregs.c | 13 +++---------- drivers/block/rsxx/dma.c | 12 ------------ drivers/block/rsxx/rsxx.h | 6 ++++-- 5 files changed, 11 insertions(+), 30 deletions(-) diff --git a/drivers/block/rsxx/config.c b/drivers/block/rsxx/config.c index a295e7e..0d8cb18 100644 --- a/drivers/block/rsxx/config.c +++ b/drivers/block/rsxx/config.c @@ -29,10 +29,8 @@ #include "rsxx_priv.h" #include "rsxx_cfg.h" -static void initialize_config(void *config) +static void initialize_config(struct rsxx_card_cfg *cfg) { - struct rsxx_card_cfg *cfg = config; - cfg->hdr.version = RSXX_CFG_VERSION; cfg->data.block_size = RSXX_HW_BLK_SIZE; @@ -181,7 +179,7 @@ int rsxx_load_config(struct rsxx_cardinfo *card) } else { dev_info(CARD_TO_DEV(card), "Initializing card configuration.\n"); - initialize_config(card); + initialize_config(&card->config); st = rsxx_save_config(card); if (st) return st; diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index e516248..edbae10 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -161,9 +161,9 @@ static irqreturn_t rsxx_isr(int irq, void *pdata) } /*----------------- Card Event Handler -------------------*/ -static char *rsxx_card_state_to_str(unsigned int state) +static const char * const rsxx_card_state_to_str(unsigned int state) { - static char *state_strings[] = { + static const char * const state_strings[] = { "Unknown", "Shutdown", "Starting", "Formatting", "Uninitialized", "Good", "Shutting Down", "Fault", "Read Only Fault", "dStroying" diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 80bbe63..2241564 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -126,13 +126,6 @@ static void creg_issue_cmd(struct rsxx_cardinfo *card, struct creg_cmd *cmd) cmd->buf, cmd->stream); } - /* - * Data copy must complete before initiating the command. This is - * needed for weakly ordered processors (i.e. PowerPC), so that all - * neccessary registers are written before we kick the hardware. - */ - wmb(); - /* Setting the valid bit will kick off the command. */ iowrite32(cmd->op, card->regmap + CREG_CMD); } @@ -399,12 +392,12 @@ static int __issue_creg_rw(struct rsxx_cardinfo *card, return st; /* - * This timeout is neccessary for unresponsive hardware. The additional + * This timeout is necessary for unresponsive hardware. The additional * 20 seconds to used to guarantee that each cregs requests has time to * complete. */ - timeout = msecs_to_jiffies((CREG_TIMEOUT_MSEC * - card->creg_ctrl.q_depth) + 20000); + timeout = msecs_to_jiffies(CREG_TIMEOUT_MSEC * + card->creg_ctrl.q_depth + 20000); /* * The creg interface is guaranteed to complete. It has a timeout diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index 63176e6..7c3a57b 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -432,16 +432,6 @@ static void rsxx_issue_dmas(struct work_struct *work) /* Let HW know we've queued commands. */ if (cmds_pending) { - /* - * We must guarantee that the CPU writes to 'ctrl->cmd.buf' - * (which is in PCI-consistent system-memory) from the loop - * above make it into the coherency domain before the - * following PIO "trigger" updating the cmd.idx. A WMB is - * sufficient. We need not explicitly CPU cache-flush since - * the memory is a PCI-consistent (ie; coherent) mapping. - */ - wmb(); - atomic_add(cmds_pending, &ctrl->stats.hw_q_depth); mod_timer(&ctrl->activity_timer, jiffies + DMA_ACTIVITY_TIMEOUT); @@ -798,8 +788,6 @@ static int rsxx_dma_ctrl_init(struct pci_dev *dev, iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX); iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX); - wmb(); - return 0; } diff --git a/drivers/block/rsxx/rsxx.h b/drivers/block/rsxx/rsxx.h index 2e50b65..24ba364 100644 --- a/drivers/block/rsxx/rsxx.h +++ b/drivers/block/rsxx/rsxx.h @@ -27,15 +27,17 @@ /*----------------- IOCTL Definitions -------------------*/ +#define RSXX_MAX_DATA 8 + struct rsxx_reg_access { __u32 addr; __u32 cnt; __u32 stat; __u32 stream; - __u32 data[8]; + __u32 data[RSXX_MAX_DATA]; }; -#define RSXX_MAX_REG_CNT (8 * (sizeof(__u32))) +#define RSXX_MAX_REG_CNT (RSXX_MAX_DATA * (sizeof(__u32))) #define RSXX_IOC_MAGIC 'r' -- cgit v1.1 From 03ac03a8971bd7e9f8c8b20a309b61beaf154d60 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Mon, 25 Feb 2013 12:31:31 -0600 Subject: block: IBM RamSan 70/80 fixes inconsistent locking. This patch includes changes to the cregs locking scheme. Before, inconsistant locking would occur because of misuse of spin_lock, spin_lock_bh, and counter parts. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/cregs.c | 44 ++++++++++++++++++-------------------------- 1 file changed, 18 insertions(+), 26 deletions(-) diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 2241564..0539a25 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -99,22 +99,6 @@ static void copy_from_creg_data(struct rsxx_cardinfo *card, } } -static struct creg_cmd *pop_active_cmd(struct rsxx_cardinfo *card) -{ - struct creg_cmd *cmd; - - /* - * Spin lock is needed because this can be called in atomic/interrupt - * context. - */ - spin_lock_bh(&card->creg_ctrl.lock); - cmd = card->creg_ctrl.active_cmd; - card->creg_ctrl.active_cmd = NULL; - spin_unlock_bh(&card->creg_ctrl.lock); - - return cmd; -} - static void creg_issue_cmd(struct rsxx_cardinfo *card, struct creg_cmd *cmd) { iowrite32(cmd->addr, card->regmap + CREG_ADD); @@ -189,11 +173,11 @@ static int creg_queue_cmd(struct rsxx_cardinfo *card, cmd->cb_private = cb_private; cmd->status = 0; - spin_lock(&card->creg_ctrl.lock); + spin_lock_bh(&card->creg_ctrl.lock); list_add_tail(&cmd->list, &card->creg_ctrl.queue); card->creg_ctrl.q_depth++; creg_kick_queue(card); - spin_unlock(&card->creg_ctrl.lock); + spin_unlock_bh(&card->creg_ctrl.lock); return 0; } @@ -203,7 +187,11 @@ static void creg_cmd_timed_out(unsigned long data) struct rsxx_cardinfo *card = (struct rsxx_cardinfo *) data; struct creg_cmd *cmd; - cmd = pop_active_cmd(card); + spin_lock(&card->creg_ctrl.lock); + cmd = card->creg_ctrl.active_cmd; + card->creg_ctrl.active_cmd = NULL; + spin_unlock(&card->creg_ctrl.lock); + if (cmd == NULL) { card->creg_ctrl.creg_stats.creg_timeout++; dev_warn(CARD_TO_DEV(card), @@ -240,7 +228,11 @@ static void creg_cmd_done(struct work_struct *work) if (del_timer_sync(&card->creg_ctrl.cmd_timer) == 0) card->creg_ctrl.creg_stats.failed_cancel_timer++; - cmd = pop_active_cmd(card); + spin_lock_bh(&card->creg_ctrl.lock); + cmd = card->creg_ctrl.active_cmd; + card->creg_ctrl.active_cmd = NULL; + spin_unlock_bh(&card->creg_ctrl.lock); + if (cmd == NULL) { dev_err(CARD_TO_DEV(card), "Spurious creg interrupt!\n"); @@ -289,10 +281,10 @@ creg_done: kmem_cache_free(creg_cmd_pool, cmd); - spin_lock(&card->creg_ctrl.lock); + spin_lock_bh(&card->creg_ctrl.lock); card->creg_ctrl.active = 0; creg_kick_queue(card); - spin_unlock(&card->creg_ctrl.lock); + spin_unlock_bh(&card->creg_ctrl.lock); } static void creg_reset(struct rsxx_cardinfo *card) @@ -317,7 +309,7 @@ static void creg_reset(struct rsxx_cardinfo *card) "Resetting creg interface for recovery\n"); /* Cancel outstanding commands */ - spin_lock(&card->creg_ctrl.lock); + spin_lock_bh(&card->creg_ctrl.lock); list_for_each_entry_safe(cmd, tmp, &card->creg_ctrl.queue, list) { list_del(&cmd->list); card->creg_ctrl.q_depth--; @@ -338,7 +330,7 @@ static void creg_reset(struct rsxx_cardinfo *card) card->creg_ctrl.active = 0; } - spin_unlock(&card->creg_ctrl.lock); + spin_unlock_bh(&card->creg_ctrl.lock); card->creg_ctrl.reset = 0; spin_lock_irqsave(&card->irq_lock, flags); @@ -705,7 +697,7 @@ void rsxx_creg_destroy(struct rsxx_cardinfo *card) int cnt = 0; /* Cancel outstanding commands */ - spin_lock(&card->creg_ctrl.lock); + spin_lock_bh(&card->creg_ctrl.lock); list_for_each_entry_safe(cmd, tmp, &card->creg_ctrl.queue, list) { list_del(&cmd->list); if (cmd->cb) @@ -730,7 +722,7 @@ void rsxx_creg_destroy(struct rsxx_cardinfo *card) "Canceled active creg command\n"); kmem_cache_free(creg_cmd_pool, cmd); } - spin_unlock(&card->creg_ctrl.lock); + spin_unlock_bh(&card->creg_ctrl.lock); cancel_work_sync(&card->creg_ctrl.done_work); } -- cgit v1.1 From 9bb3c4469e317919b0fde8c0e0a3ebe7bd2cf167 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Wed, 27 Feb 2013 09:24:59 -0600 Subject: block: IBM RamSan 70/80 branding changes. This patch includes changing the hardware branding name from IBM RamSan to IBM FlashSystem. v2 Changes include: o Removing the unnecessary IBM Vendor ID #define v1 Changes include: o Changed all references of RamSan to FlashSystem. o Changed the vendor/device IDs for the product. o Changed driver version number. o Updated the MAINTAINERS file. o Various other little things. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- MAINTAINERS | 12 ++++++------ drivers/block/Kconfig | 4 ++-- drivers/block/rsxx/Makefile | 2 +- drivers/block/rsxx/config.c | 2 +- drivers/block/rsxx/core.c | 10 ++++------ drivers/block/rsxx/dma.c | 2 +- drivers/block/rsxx/rsxx_cfg.h | 2 +- drivers/block/rsxx/rsxx_priv.h | 9 +++------ 8 files changed, 19 insertions(+), 24 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 9561658..a00f0ea 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3242,6 +3242,12 @@ F: Documentation/firmware_class/ F: drivers/base/firmware*.c F: include/linux/firmware.h +FLASHSYSTEM DRIVER (IBM FlashSystem 70/80 PCI SSD Flash Card) +M: Joshua Morris +M: Philip Kelleher +S: Maintained +F: drivers/block/rsxx/ + FLOPPY DRIVER M: Jiri Kosina T: git git://git.kernel.org/pub/scm/linux/kernel/git/jikos/floppy.git @@ -6516,12 +6522,6 @@ S: Maintained F: Documentation/blockdev/ramdisk.txt F: drivers/block/brd.c -RAMSAM DRIVER (IBM RamSan 70/80 PCI SSD Flash Card) -M: Joshua Morris -M: Philip Kelleher -S: Maintained -F: drivers/block/rsxx/ - RANDOM NUMBER DRIVER M: Theodore Ts'o" S: Maintained diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig index 5dc0dae..b81ddfe 100644 --- a/drivers/block/Kconfig +++ b/drivers/block/Kconfig @@ -532,11 +532,11 @@ config BLK_DEV_RBD If unsure, say N. config BLK_DEV_RSXX - tristate "RamSam PCIe Flash SSD Device Driver" + tristate "IBM FlashSystem 70/80 PCIe SSD Device Driver" depends on PCI help Device driver for IBM's high speed PCIe SSD - storage devices: RamSan-70 and RamSan-80. + storage devices: FlashSystem-70 and FlashSystem-80. To compile this driver as a module, choose M here: the module will be called rsxx. diff --git a/drivers/block/rsxx/Makefile b/drivers/block/rsxx/Makefile index f35cd0b..b1c53c0 100644 --- a/drivers/block/rsxx/Makefile +++ b/drivers/block/rsxx/Makefile @@ -1,2 +1,2 @@ obj-$(CONFIG_BLK_DEV_RSXX) += rsxx.o -rsxx-y := config.o core.o cregs.o dev.o dma.o +rsxx-objs := config.o core.o cregs.o dev.o dma.o diff --git a/drivers/block/rsxx/config.c b/drivers/block/rsxx/config.c index 0d8cb18..10cd530 100644 --- a/drivers/block/rsxx/config.c +++ b/drivers/block/rsxx/config.c @@ -35,7 +35,7 @@ static void initialize_config(struct rsxx_card_cfg *cfg) cfg->data.block_size = RSXX_HW_BLK_SIZE; cfg->data.stripe_size = RSXX_HW_BLK_SIZE; - cfg->data.vendor_id = RSXX_VENDOR_ID_TMS_IBM; + cfg->data.vendor_id = RSXX_VENDOR_ID_IBM; cfg->data.cache_order = (-1); cfg->data.intr_coal.mode = RSXX_INTR_COAL_DISABLED; cfg->data.intr_coal.count = 0; diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index edbae10..b82ee7b 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -39,8 +39,8 @@ #define NO_LEGACY 0 -MODULE_DESCRIPTION("IBM RamSan PCIe Flash SSD Device Driver"); -MODULE_AUTHOR("IBM "); +MODULE_DESCRIPTION("IBM FlashSystem 70/80 PCIe SSD Device Driver"); +MODULE_AUTHOR("Joshua Morris/Philip Kelleher, IBM"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRIVER_VERSION); @@ -593,10 +593,8 @@ static void rsxx_pci_shutdown(struct pci_dev *dev) } static DEFINE_PCI_DEVICE_TABLE(rsxx_pci_ids) = { - {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS70_FLASH)}, - {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS70D_FLASH)}, - {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS80_FLASH)}, - {PCI_DEVICE(PCI_VENDOR_ID_TMS_IBM, PCI_DEVICE_ID_RS81_FLASH)}, + {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS70_FLASH)}, + {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS80_FLASH)}, {0,}, }; diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index 7c3a57b..efd75b55a 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -28,7 +28,7 @@ struct rsxx_dma { struct list_head list; u8 cmd; - unsigned int laddr; /* Logical address on the ramsan */ + unsigned int laddr; /* Logical address */ struct { u32 off; u32 cnt; diff --git a/drivers/block/rsxx/rsxx_cfg.h b/drivers/block/rsxx/rsxx_cfg.h index c025fe5..f384c94 100644 --- a/drivers/block/rsxx/rsxx_cfg.h +++ b/drivers/block/rsxx/rsxx_cfg.h @@ -58,7 +58,7 @@ struct rsxx_card_cfg { }; /* Vendor ID Values */ -#define RSXX_VENDOR_ID_TMS_IBM 0 +#define RSXX_VENDOR_ID_IBM 0 #define RSXX_VENDOR_ID_DSI 1 #define RSXX_VENDOR_COUNT 2 diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h index a1ac907..f5a95f7 100644 --- a/drivers/block/rsxx/rsxx_priv.h +++ b/drivers/block/rsxx/rsxx_priv.h @@ -45,16 +45,13 @@ struct proc_cmd; -#define PCI_VENDOR_ID_TMS_IBM 0x15B6 -#define PCI_DEVICE_ID_RS70_FLASH 0x0019 -#define PCI_DEVICE_ID_RS70D_FLASH 0x001A -#define PCI_DEVICE_ID_RS80_FLASH 0x001C -#define PCI_DEVICE_ID_RS81_FLASH 0x001E +#define PCI_DEVICE_ID_FS70_FLASH 0x04A9 +#define PCI_DEVICE_ID_FS80_FLASH 0x04AA #define RS70_PCI_REV_SUPPORTED 4 #define DRIVER_NAME "rsxx" -#define DRIVER_VERSION "3.7" +#define DRIVER_VERSION "4.0" /* Block size is 4096 */ #define RSXX_HW_BLK_SHIFT 12 -- cgit v1.1 From 1ebfd109822ea35b71aee4efe9ddc2e1b9ac0ed7 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Mon, 25 Feb 2013 13:09:40 -0600 Subject: block: IBM RamSan 70/80 error message bug fix. This patch includes a simple change to the rsxx_pci_remove function that caused error messages because traffic was halted too early. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/core.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index b82ee7b..cbbdff1 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -538,9 +538,6 @@ static void rsxx_pci_remove(struct pci_dev *dev) rsxx_disable_ier_and_isr(card, CR_INTR_EVENT); spin_unlock_irqrestore(&card->irq_lock, flags); - /* Prevent work_structs from re-queuing themselves. */ - card->halt = 1; - cancel_work_sync(&card->event_work); rsxx_destroy_dev(card); @@ -549,6 +546,10 @@ static void rsxx_pci_remove(struct pci_dev *dev) spin_lock_irqsave(&card->irq_lock, flags); rsxx_disable_ier_and_isr(card, CR_INTR_ALL); spin_unlock_irqrestore(&card->irq_lock, flags); + + /* Prevent work_structs from re-queuing themselves. */ + card->halt = 1; + free_irq(dev->irq, card); if (!force_legacy) -- cgit v1.1 From 2a6ad871a10ce915a300d8f227168ad4c34936ec Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Sun, 3 Feb 2013 12:24:48 +0100 Subject: ARM: multiplatform: Sort the max gpio numbers. When building a multiplatform kernel, we could end up with a smaller number of GPIOs than the one required by the platform the kernel was running on. Sort the max GPIO number by descending order so that we always take the highest number required. Signed-off-by: Maxime Ripard Signed-off-by: Arnd Bergmann --- arch/arm/Kconfig | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 5b71469..c7e0274 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1657,13 +1657,16 @@ config LOCAL_TIMERS accounting to be spread across the timer interval, preventing a "thundering herd" at every timer tick. +# The GPIO number here must be sorted by descending number. In case of +# a multiplatform kernel, we just want the highest value required by the +# selected platforms. config ARCH_NR_GPIO int default 1024 if ARCH_SHMOBILE || ARCH_TEGRA - default 355 if ARCH_U8500 - default 264 if MACH_H4700 default 512 if SOC_OMAP5 + default 355 if ARCH_U8500 default 288 if ARCH_VT8500 || ARCH_SUNXI + default 264 if MACH_H4700 default 0 help Maximum number of GPIOs in the system. -- cgit v1.1 From 0d8abbfd96e6ebd0b97e0f740614cc5e62d94d84 Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Mon, 4 Mar 2013 11:04:28 +0530 Subject: Arm: socfpga: pl330: Add #dma-cells for generic dma binding support This patch adds #dma-cells property to PL330 DMA controller nodes for supporting generic dma dt bindings on SOCFPGA platform. #dma-channels and #dma-requests are not required now but added in advance. Signed-off-by: Padmavathi Venna Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/socfpga.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/boot/dts/socfpga.dtsi b/arch/arm/boot/dts/socfpga.dtsi index 936d230..7e8769b 100644 --- a/arch/arm/boot/dts/socfpga.dtsi +++ b/arch/arm/boot/dts/socfpga.dtsi @@ -75,6 +75,9 @@ compatible = "arm,pl330", "arm,primecell"; reg = <0xffe01000 0x1000>; interrupts = <0 180 4>; + #dma-cells = <1>; + #dma-channels = <8>; + #dma-requests = <32>; }; }; -- cgit v1.1 From 94a32d10f47b637ae24b78b1ddc7ef0e8396fda4 Mon Sep 17 00:00:00 2001 From: Sunguk Lee Date: Tue, 12 Mar 2013 04:41:58 +0900 Subject: Bluetooth: Device 0cf3:3008 should map AR 3012 T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0cf3 ProdID=3008 Rev= 0.01 S: Manufacturer=Atheros Communications S: Product=Bluetooth USB Host Controller S: SerialNumber=Alaska Day 2006 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms Signed-off-by: Sunguk Lee Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index b9908dd..3095d2e 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -74,6 +74,7 @@ static struct usb_device_id ath3k_table[] = { /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0CF3, 0x3004) }, + { USB_DEVICE(0x0CF3, 0x3008) }, { USB_DEVICE(0x0CF3, 0x311D) }, { USB_DEVICE(0x13d3, 0x3375) }, { USB_DEVICE(0x04CA, 0x3004) }, @@ -107,6 +108,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { /* Atheros AR3012 with sflash firmware*/ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 59cde8e..e547851 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -132,6 +132,7 @@ static struct usb_device_id blacklist_table[] = { /* Atheros 3012 with sflash firmware */ { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, -- cgit v1.1 From 68ac8bfb6aa4ce1a146b5a291f03fc2dd6d17cf2 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 27 Feb 2013 14:43:09 -0500 Subject: quota: add missing use of dq_data_lock in __dquot_initialize The bulk of __dquot_initialize runs under the dqptr_sem which protects the inode->i_dquot pointers. It doesn't protect the dereferenced contents, though. Those are protected by the dq_data_lock, which is missing around the dquot_resv_space call. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara --- fs/quota/dquot.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index 05ae3c9..3e64169 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -1439,8 +1439,11 @@ static void __dquot_initialize(struct inode *inode, int type) * did a write before quota was turned on */ rsv = inode_get_rsv_space(inode); - if (unlikely(rsv)) + if (unlikely(rsv)) { + spin_lock(&dq_data_lock); dquot_resv_space(inode->i_dquot[cnt], rsv); + spin_unlock(&dq_data_lock); + } } } out_err: -- cgit v1.1 From 8d0c2d10dd72c5292eda7a06231056a4c972e4cc Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Sat, 9 Mar 2013 15:28:44 +0100 Subject: ext3: Fix format string issues ext3_msg() takes the printk prefix as the second parameter and the format string as the third parameter. Two callers of ext3_msg omit the prefix and pass the format string as the second parameter and the first parameter to the format string as the third parameter. In both cases this string comes from an arbitrary source. Which means the string may contain format string characters, which will lead to undefined and potentially harmful behavior. The issue was introduced in commit 4cf46b67eb("ext3: Unify log messages in ext3") and is fixed by this patch. CC: stable@vger.kernel.org Signed-off-by: Lars-Peter Clausen Signed-off-by: Jan Kara --- fs/ext3/super.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/ext3/super.c b/fs/ext3/super.c index 1d6e2ed..fb5120a 100644 --- a/fs/ext3/super.c +++ b/fs/ext3/super.c @@ -353,7 +353,7 @@ static struct block_device *ext3_blkdev_get(dev_t dev, struct super_block *sb) return bdev; fail: - ext3_msg(sb, "error: failed to open journal device %s: %ld", + ext3_msg(sb, KERN_ERR, "error: failed to open journal device %s: %ld", __bdevname(dev, b), PTR_ERR(bdev)); return NULL; @@ -887,7 +887,7 @@ static ext3_fsblk_t get_sb_block(void **data, struct super_block *sb) /*todo: use simple_strtoll with >32bit ext3 */ sb_block = simple_strtoul(options, &options, 0); if (*options && *options != ',') { - ext3_msg(sb, "error: invalid sb specification: %s", + ext3_msg(sb, KERN_ERR, "error: invalid sb specification: %s", (char *) *data); return 1; } -- cgit v1.1 From af591ad896ef75585752ac2eab4fba9437f23322 Mon Sep 17 00:00:00 2001 From: Ionut-Gabriel Radu Date: Sun, 10 Mar 2013 15:06:23 +0200 Subject: reiserfs: Use kstrdup instead of kmalloc/strcpy Signed-off-by: Ionut-Gabriel Radu Signed-off-by: Jan Kara --- fs/reiserfs/super.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index 194113b..f8a23c3 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -1147,8 +1147,7 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin "on filesystem root."); return 0; } - qf_names[qtype] = - kmalloc(strlen(arg) + 1, GFP_KERNEL); + qf_names[qtype] = kstrdup(arg, GFP_KERNEL); if (!qf_names[qtype]) { reiserfs_warning(s, "reiserfs-2502", "not enough memory " @@ -1156,7 +1155,6 @@ static int reiserfs_parse_options(struct super_block *s, char *options, /* strin "quotafile name."); return 0; } - strcpy(qf_names[qtype], arg); if (qtype == USRQUOTA) *mount_options |= 1 << REISERFS_USRQUOTA; else -- cgit v1.1 From d6c0dd6b0c196979fa7b34c1d99432fcb1b7e1df Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Wed, 6 Mar 2013 14:57:03 -0800 Subject: libceph: fix decoding of pgids In 4f6a7e5ee1393ec4b243b39dac9f36992d161540 we effectively dropped support for the legacy encoding for the OSDMap and incremental. However, we didn't fix the decoding for the pgid. Signed-off-by: Sage Weil Reviewed-by: Yehuda Sadeh --- net/ceph/osdmap.c | 42 +++++++++++++++++++++++++++++------------- 1 file changed, 29 insertions(+), 13 deletions(-) diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c index 69bc4bf..4543b9a 100644 --- a/net/ceph/osdmap.c +++ b/net/ceph/osdmap.c @@ -654,6 +654,24 @@ static int osdmap_set_max_osd(struct ceph_osdmap *map, int max) return 0; } +static int __decode_pgid(void **p, void *end, struct ceph_pg *pg) +{ + u8 v; + + ceph_decode_need(p, end, 1+8+4+4, bad); + v = ceph_decode_8(p); + if (v != 1) + goto bad; + pg->pool = ceph_decode_64(p); + pg->seed = ceph_decode_32(p); + *p += 4; /* skip preferred */ + return 0; + +bad: + dout("error decoding pgid\n"); + return -EINVAL; +} + /* * decode a full map. */ @@ -745,13 +763,12 @@ struct ceph_osdmap *osdmap_decode(void **p, void *end) for (i = 0; i < len; i++) { int n, j; struct ceph_pg pgid; - struct ceph_pg_v1 pgid_v1; struct ceph_pg_mapping *pg; - ceph_decode_need(p, end, sizeof(u32) + sizeof(u64), bad); - ceph_decode_copy(p, &pgid_v1, sizeof(pgid_v1)); - pgid.pool = le32_to_cpu(pgid_v1.pool); - pgid.seed = le16_to_cpu(pgid_v1.ps); + err = __decode_pgid(p, end, &pgid); + if (err) + goto bad; + ceph_decode_need(p, end, sizeof(u32), bad); n = ceph_decode_32(p); err = -EINVAL; if (n > (UINT_MAX - sizeof(*pg)) / sizeof(u32)) @@ -818,8 +835,8 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, u16 version; ceph_decode_16_safe(p, end, version, bad); - if (version > 6) { - pr_warning("got unknown v %d > %d of inc osdmap\n", version, 6); + if (version != 6) { + pr_warning("got unknown v %d != 6 of inc osdmap\n", version); goto bad; } @@ -963,15 +980,14 @@ struct ceph_osdmap *osdmap_apply_incremental(void **p, void *end, while (len--) { struct ceph_pg_mapping *pg; int j; - struct ceph_pg_v1 pgid_v1; struct ceph_pg pgid; u32 pglen; - ceph_decode_need(p, end, sizeof(u64) + sizeof(u32), bad); - ceph_decode_copy(p, &pgid_v1, sizeof(pgid_v1)); - pgid.pool = le32_to_cpu(pgid_v1.pool); - pgid.seed = le16_to_cpu(pgid_v1.ps); - pglen = ceph_decode_32(p); + err = __decode_pgid(p, end, &pgid); + if (err) + goto bad; + ceph_decode_need(p, end, sizeof(u32), bad); + pglen = ceph_decode_32(p); if (pglen) { ceph_decode_need(p, end, pglen*sizeof(u32), bad); -- cgit v1.1 From b47506d91259c29b9c75c404737eb6525556f9b4 Mon Sep 17 00:00:00 2001 From: Marek Lindner Date: Mon, 4 Mar 2013 10:39:49 +0800 Subject: batman-adv: verify tt len does not exceed packet len batadv_iv_ogm_process() accesses the packet using the tt_num_changes attribute regardless of the real packet len (assuming the length check was done before). Therefore a length check is needed to avoid reading random memory. Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/bat_iv_ogm.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index a0b253e..a5bb0a76 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -1288,7 +1288,8 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff; /* unpack the aggregated packets and process them one by one */ - do { + while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len, + batadv_ogm_packet->tt_num_changes)) { tt_buff = packet_buff + buff_pos + BATADV_OGM_HLEN; batadv_iv_ogm_process(ethhdr, batadv_ogm_packet, tt_buff, @@ -1299,8 +1300,7 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, packet_pos = packet_buff + buff_pos; batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos; - } while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len, - batadv_ogm_packet->tt_num_changes)); + } kfree_skb(skb); return NET_RX_SUCCESS; -- cgit v1.1 From 90ba983f6889e65a3b506b30dc606aa9d1d46cd2 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Mon, 11 Mar 2013 23:39:59 -0400 Subject: ext4: use atomic64_t for the per-flexbg free_clusters count A user who was using a 8TB+ file system and with a very large flexbg size (> 65536) could cause the atomic_t used in the struct flex_groups to overflow. This was detected by PaX security patchset: http://forums.grsecurity.net/viewtopic.php?f=3&t=3289&p=12551#p12551 This bug was introduced in commit 9f24e4208f7e, so it's been around since 2.6.30. :-( Fix this by using an atomic64_t for struct orlav_stats's free_clusters. Signed-off-by: "Theodore Ts'o" Reviewed-by: Lukas Czerner Cc: stable@vger.kernel.org --- fs/ext4/ext4.h | 6 +++--- fs/ext4/ialloc.c | 4 ++-- fs/ext4/mballoc.c | 12 ++++++------ fs/ext4/resize.c | 4 ++-- fs/ext4/super.c | 4 ++-- 5 files changed, 15 insertions(+), 15 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 4a01ba3..167ff56 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -335,9 +335,9 @@ struct ext4_group_desc */ struct flex_groups { - atomic_t free_inodes; - atomic_t free_clusters; - atomic_t used_dirs; + atomic64_t free_clusters; + atomic_t free_inodes; + atomic_t used_dirs; }; #define EXT4_BG_INODE_UNINIT 0x0001 /* Inode table/bitmap not in use */ diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index 32fd2b9..6c5bb8d 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -324,8 +324,8 @@ error_return: } struct orlov_stats { + __u64 free_clusters; __u32 free_inodes; - __u32 free_clusters; __u32 used_dirs; }; @@ -342,7 +342,7 @@ static void get_orlov_stats(struct super_block *sb, ext4_group_t g, if (flex_size > 1) { stats->free_inodes = atomic_read(&flex_group[g].free_inodes); - stats->free_clusters = atomic_read(&flex_group[g].free_clusters); + stats->free_clusters = atomic64_read(&flex_group[g].free_clusters); stats->used_dirs = atomic_read(&flex_group[g].used_dirs); return; } diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 8b2ea9f..ee6614bd 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2804,8 +2804,8 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac, if (sbi->s_log_groups_per_flex) { ext4_group_t flex_group = ext4_flex_group(sbi, ac->ac_b_ex.fe_group); - atomic_sub(ac->ac_b_ex.fe_len, - &sbi->s_flex_groups[flex_group].free_clusters); + atomic64_sub(ac->ac_b_ex.fe_len, + &sbi->s_flex_groups[flex_group].free_clusters); } err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh); @@ -4661,8 +4661,8 @@ do_more: if (sbi->s_log_groups_per_flex) { ext4_group_t flex_group = ext4_flex_group(sbi, block_group); - atomic_add(count_clusters, - &sbi->s_flex_groups[flex_group].free_clusters); + atomic64_add(count_clusters, + &sbi->s_flex_groups[flex_group].free_clusters); } ext4_mb_unload_buddy(&e4b); @@ -4804,8 +4804,8 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb, if (sbi->s_log_groups_per_flex) { ext4_group_t flex_group = ext4_flex_group(sbi, block_group); - atomic_add(EXT4_NUM_B2C(sbi, blocks_freed), - &sbi->s_flex_groups[flex_group].free_clusters); + atomic64_add(EXT4_NUM_B2C(sbi, blocks_freed), + &sbi->s_flex_groups[flex_group].free_clusters); } ext4_mb_unload_buddy(&e4b); diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index b2c8ee5..c169477 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -1360,8 +1360,8 @@ static void ext4_update_super(struct super_block *sb, sbi->s_log_groups_per_flex) { ext4_group_t flex_group; flex_group = ext4_flex_group(sbi, group_data[0].group); - atomic_add(EXT4_NUM_B2C(sbi, free_blocks), - &sbi->s_flex_groups[flex_group].free_clusters); + atomic64_add(EXT4_NUM_B2C(sbi, free_blocks), + &sbi->s_flex_groups[flex_group].free_clusters); atomic_add(EXT4_INODES_PER_GROUP(sb) * flex_gd->count, &sbi->s_flex_groups[flex_group].free_inodes); } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 9379b7f..d1ee6a8 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1923,8 +1923,8 @@ static int ext4_fill_flex_info(struct super_block *sb) flex_group = ext4_flex_group(sbi, i); atomic_add(ext4_free_inodes_count(sb, gdp), &sbi->s_flex_groups[flex_group].free_inodes); - atomic_add(ext4_free_group_clusters(sb, gdp), - &sbi->s_flex_groups[flex_group].free_clusters); + atomic64_add(ext4_free_group_clusters(sb, gdp), + &sbi->s_flex_groups[flex_group].free_clusters); atomic_add(ext4_used_dirs_count(sb, gdp), &sbi->s_flex_groups[flex_group].used_dirs); } -- cgit v1.1 From 0da9dfdd2cd9889201bc6f6f43580c99165cd087 Mon Sep 17 00:00:00 2001 From: David Howells Date: Tue, 12 Mar 2013 16:44:31 +1100 Subject: keys: fix race with concurrent install_user_keyrings() This fixes CVE-2013-1792. There is a race in install_user_keyrings() that can cause a NULL pointer dereference when called concurrently for the same user if the uid and uid-session keyrings are not yet created. It might be possible for an unprivileged user to trigger this by calling keyctl() from userspace in parallel immediately after logging in. Assume that we have two threads both executing lookup_user_key(), both looking for KEY_SPEC_USER_SESSION_KEYRING. THREAD A THREAD B =============================== =============================== ==>call install_user_keyrings(); if (!cred->user->session_keyring) ==>call install_user_keyrings() ... user->uid_keyring = uid_keyring; if (user->uid_keyring) return 0; <== key = cred->user->session_keyring [== NULL] user->session_keyring = session_keyring; atomic_inc(&key->usage); [oops] At the point thread A dereferences cred->user->session_keyring, thread B hasn't updated user->session_keyring yet, but thread A assumes it is populated because install_user_keyrings() returned ok. The race window is really small but can be exploited if, for example, thread B is interrupted or preempted after initializing uid_keyring, but before doing setting session_keyring. This couldn't be reproduced on a stock kernel. However, after placing systemtap probe on 'user->session_keyring = session_keyring;' that introduced some delay, the kernel could be crashed reliably. Fix this by checking both pointers before deciding whether to return. Alternatively, the test could be done away with entirely as it is checked inside the mutex - but since the mutex is global, that may not be the best way. Signed-off-by: David Howells Reported-by: Mateusz Guzik Cc: Signed-off-by: Andrew Morton Signed-off-by: James Morris --- security/keys/process_keys.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c index a571fad..42defae 100644 --- a/security/keys/process_keys.c +++ b/security/keys/process_keys.c @@ -57,7 +57,7 @@ int install_user_keyrings(void) kenter("%p{%u}", user, uid); - if (user->uid_keyring) { + if (user->uid_keyring && user->session_keyring) { kleave(" = 0 [exist]"); return 0; } -- cgit v1.1 From 2e9b9a3c243b1bc1fc9d1e84fcbc32568467bf8e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 12 Mar 2013 00:16:40 +0800 Subject: ALSA: asihpi - fix potential NULL pointer dereference The dereference should be moved below the NULL test. Signed-off-by: Wei Yongjun Signed-off-by: Takashi Iwai --- sound/pci/asihpi/asihpi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c index 3536b07..0aabfed 100644 --- a/sound/pci/asihpi/asihpi.c +++ b/sound/pci/asihpi/asihpi.c @@ -2549,7 +2549,7 @@ static int snd_asihpi_sampleclock_add(struct snd_card_asihpi *asihpi, static int snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi) { - struct snd_card *card = asihpi->card; + struct snd_card *card; unsigned int idx = 0; unsigned int subindex = 0; int err; @@ -2557,6 +2557,7 @@ static int snd_card_asihpi_mixer_new(struct snd_card_asihpi *asihpi) if (snd_BUG_ON(!asihpi)) return -EINVAL; + card = asihpi->card; strcpy(card->mixername, "Asihpi Mixer"); err = -- cgit v1.1 From 281a6ac0f54052c81bbee156914459ba5a08f924 Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Mon, 11 Mar 2013 20:15:34 +0100 Subject: ALSA: usb-audio: add a workaround for the NuForce UDH-100 The NuForce UDH-100 numbers its interfaces incorrectly, which makes the interface associations come out wrong, which results in the driver erroring out with the message "Audio class v2 interfaces need an interface association". Work around this by searching for the interface association descriptor also in some other place where it might have ended up. Reported-and-tested-by: Dave Helstroom Signed-off-by: Clemens Ladisch Signed-off-by: Takashi Iwai --- sound/usb/card.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/sound/usb/card.c b/sound/usb/card.c index 803953a..2da8ad7 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -244,6 +244,21 @@ static int snd_usb_create_streams(struct snd_usb_audio *chip, int ctrlif) usb_ifnum_to_if(dev, ctrlif)->intf_assoc; if (!assoc) { + /* + * Firmware writers cannot count to three. So to find + * the IAD on the NuForce UDH-100, also check the next + * interface. + */ + struct usb_interface *iface = + usb_ifnum_to_if(dev, ctrlif + 1); + if (iface && + iface->intf_assoc && + iface->intf_assoc->bFunctionClass == USB_CLASS_AUDIO && + iface->intf_assoc->bFunctionProtocol == UAC_VERSION_2) + assoc = iface->intf_assoc; + } + + if (!assoc) { snd_printk(KERN_ERR "Audio class v2 interfaces need an interface association\n"); return -EINVAL; } -- cgit v1.1 From 26bacba15ea849b61ae58d30a560b1f28a16d3a2 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Wed, 27 Feb 2013 15:19:24 +0200 Subject: mfd: omap-usb-host: Actually update hostconfig The helper functions omap_usbhs_rev1_hostconfig() and omap_usbhs_rev2_hostconfig() don't write into the hostconfig register. Make sure that we write the return value into the hostconfig register. Signed-off-by: Roger Quadros Signed-off-by: Samuel Ortiz --- drivers/mfd/omap-usb-host.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 6b5edf6..4febc5c 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -460,15 +460,15 @@ static void omap_usbhs_init(struct device *dev) switch (omap->usbhs_rev) { case OMAP_USBHS_REV1: - omap_usbhs_rev1_hostconfig(omap, reg); + reg = omap_usbhs_rev1_hostconfig(omap, reg); break; case OMAP_USBHS_REV2: - omap_usbhs_rev2_hostconfig(omap, reg); + reg = omap_usbhs_rev2_hostconfig(omap, reg); break; default: /* newer revisions */ - omap_usbhs_rev2_hostconfig(omap, reg); + reg = omap_usbhs_rev2_hostconfig(omap, reg); break; } -- cgit v1.1 From 5c854aaecea0cd7da95ce2170ff305f8273d552d Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 19 Feb 2013 23:20:33 +0800 Subject: mfd: Make AB8500_CORE select POWER_SUPPLY to fix build error This patch fixes below build error when CONFIG_POWER_SUPPLY is not set. drivers/built-in.o: In function `ab8500_power_off': drivers/mfd/ab8500-sysctrl.c:37: undefined reference to `power_supply_get_by_name' drivers/mfd/ab8500-sysctrl.c:53: undefined reference to `power_supply_get_by_name' make: *** [vmlinux] Error 1 Signed-off-by: Axel Lin Acked-by: Lee Jones Signed-off-by: Samuel Ortiz --- drivers/mfd/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 671f5b1..c346941 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -858,6 +858,7 @@ config EZX_PCAP config AB8500_CORE bool "ST-Ericsson AB8500 Mixed Signal Power Management chip" depends on GENERIC_HARDIRQS && ABX500_CORE && MFD_DB8500_PRCMU + select POWER_SUPPLY select MFD_CORE select IRQ_DOMAIN help -- cgit v1.1 From df545d1cd01aab3ba3f687d5423e6c3687b069d8 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 1 Mar 2013 20:13:46 +0530 Subject: mfd: palmas: Provide irq flags through DT/platform data Currently driver sets the irq type to IRQF_TRIGGER_LOW which is causing interrupt registration failure in ARM based SoCs as: [ 0.208479] genirq: Setting trigger mode 8 for irq 118 failed (gic_set_type+0x0/0xf0) [ 0.208513] dummy 0-0059: Failed to request IRQ 118: -22 Provide the irq flags through platform data if device is registered through board file or get the irq type from DT node property in place of hardcoding the irq flag in driver to support multiple platforms. Also configure the device to generate the interrupt signal according to flag type. Signed-off-by: Laxman Dewangan Signed-off-by: Samuel Ortiz --- drivers/mfd/palmas.c | 36 +++++++++++++++++++++++++++++++++--- include/linux/mfd/palmas.h | 1 + 2 files changed, 34 insertions(+), 3 deletions(-) diff --git a/drivers/mfd/palmas.c b/drivers/mfd/palmas.c index bbdbc50..73bf76d 100644 --- a/drivers/mfd/palmas.c +++ b/drivers/mfd/palmas.c @@ -257,9 +257,24 @@ static struct regmap_irq_chip palmas_irq_chip = { PALMAS_INT1_MASK), }; -static void palmas_dt_to_pdata(struct device_node *node, +static int palmas_set_pdata_irq_flag(struct i2c_client *i2c, struct palmas_platform_data *pdata) { + struct irq_data *irq_data = irq_get_irq_data(i2c->irq); + if (!irq_data) { + dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq); + return -EINVAL; + } + + pdata->irq_flags = irqd_get_trigger_type(irq_data); + dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags); + return 0; +} + +static void palmas_dt_to_pdata(struct i2c_client *i2c, + struct palmas_platform_data *pdata) +{ + struct device_node *node = i2c->dev.of_node; int ret; u32 prop; @@ -283,6 +298,8 @@ static void palmas_dt_to_pdata(struct device_node *node, pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK | PALMAS_POWER_CTRL_ENABLE1_MASK | PALMAS_POWER_CTRL_ENABLE2_MASK; + if (i2c->irq) + palmas_set_pdata_irq_flag(i2c, pdata); } static int palmas_i2c_probe(struct i2c_client *i2c, @@ -304,7 +321,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c, if (!pdata) return -ENOMEM; - palmas_dt_to_pdata(node, pdata); + palmas_dt_to_pdata(i2c, pdata); } if (!pdata) @@ -344,6 +361,19 @@ static int palmas_i2c_probe(struct i2c_client *i2c, } } + /* Change interrupt line output polarity */ + if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH) + reg = PALMAS_POLARITY_CTRL_INT_POLARITY; + else + reg = 0; + ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE, + PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY, + reg); + if (ret < 0) { + dev_err(palmas->dev, "POLARITY_CTRL updat failed: %d\n", ret); + goto err; + } + /* Change IRQ into clear on read mode for efficiency */ slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE); addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL); @@ -352,7 +382,7 @@ static int palmas_i2c_probe(struct i2c_client *i2c, regmap_write(palmas->regmap[slave], addr, reg); ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq, - IRQF_ONESHOT | IRQF_TRIGGER_LOW, 0, &palmas_irq_chip, + IRQF_ONESHOT | pdata->irq_flags, 0, &palmas_irq_chip, &palmas->irq_data); if (ret < 0) goto err; diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h index a4d13d7..3bbda22 100644 --- a/include/linux/mfd/palmas.h +++ b/include/linux/mfd/palmas.h @@ -221,6 +221,7 @@ struct palmas_clk_platform_data { }; struct palmas_platform_data { + int irq_flags; int gpio_base; /* bit value to be loaded to the POWER_CTRL register */ -- cgit v1.1 From 80e4e6716e43500c5c7d4ff4f73fc1b56f024083 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 2 Mar 2013 15:25:50 +0800 Subject: mfd: tps65912: Declare and use tps65912_irq_exit() Clean up interrupts on exit, silencing a sparse warning caused by tps65912_irq_exit() being defined but not prototyped as we go. Signed-off-by: Mark Brown Signed-off-by: Samuel Ortiz --- drivers/mfd/tps65912-core.c | 1 + include/linux/mfd/tps65912.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/mfd/tps65912-core.c b/drivers/mfd/tps65912-core.c index 4658b5b..aeb8e40 100644 --- a/drivers/mfd/tps65912-core.c +++ b/drivers/mfd/tps65912-core.c @@ -169,6 +169,7 @@ err: void tps65912_device_exit(struct tps65912 *tps65912) { mfd_remove_devices(tps65912->dev); + tps65912_irq_exit(tps65912); kfree(tps65912); } diff --git a/include/linux/mfd/tps65912.h b/include/linux/mfd/tps65912.h index aaceab4..6d30903 100644 --- a/include/linux/mfd/tps65912.h +++ b/include/linux/mfd/tps65912.h @@ -323,5 +323,6 @@ int tps65912_device_init(struct tps65912 *tps65912); void tps65912_device_exit(struct tps65912 *tps65912); int tps65912_irq_init(struct tps65912 *tps65912, int irq, struct tps65912_platform_data *pdata); +int tps65912_irq_exit(struct tps65912 *tps65912); #endif /* __LINUX_MFD_TPS65912_H */ -- cgit v1.1 From 6049bcefada077c5d3aec59f093701df711ad235 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 2 Mar 2013 15:30:35 +0800 Subject: mfd: twl4030-audio: Fix argument type for twl4030_audio_disable_resource() Looks like the conversion to enum was missed for the definition of this function, the declaration has been updated. Signed-off-by: Mark Brown Acked-by: Peter Ujfalusi Signed-off-by: Samuel Ortiz --- drivers/mfd/twl4030-audio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/twl4030-audio.c b/drivers/mfd/twl4030-audio.c index e16edca..d2ab222 100644 --- a/drivers/mfd/twl4030-audio.c +++ b/drivers/mfd/twl4030-audio.c @@ -118,7 +118,7 @@ EXPORT_SYMBOL_GPL(twl4030_audio_enable_resource); * Disable the resource. * The function returns with error or the content of the register */ -int twl4030_audio_disable_resource(unsigned id) +int twl4030_audio_disable_resource(enum twl4030_audio_res id) { struct twl4030_audio *audio = platform_get_drvdata(twl4030_audio_dev); int val; -- cgit v1.1 From fd860195a4f9d661754345bd06a3adb30d12d882 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 8 Mar 2013 10:47:21 +0800 Subject: mfd: wm831x: Don't forward declare enum wm831x_auxadc We can't forward declare enums. Signed-off-by: Andrew Morton Signed-off-by: Samuel Ortiz --- include/linux/mfd/wm831x/auxadc.h | 2 ++ include/linux/mfd/wm831x/core.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/mfd/wm831x/auxadc.h b/include/linux/mfd/wm831x/auxadc.h index b132067..867aa23 100644 --- a/include/linux/mfd/wm831x/auxadc.h +++ b/include/linux/mfd/wm831x/auxadc.h @@ -15,6 +15,8 @@ #ifndef __MFD_WM831X_AUXADC_H__ #define __MFD_WM831X_AUXADC_H__ +struct wm831x; + /* * R16429 (0x402D) - AuxADC Data */ diff --git a/include/linux/mfd/wm831x/core.h b/include/linux/mfd/wm831x/core.h index 4a3b83a..76c2264 100644 --- a/include/linux/mfd/wm831x/core.h +++ b/include/linux/mfd/wm831x/core.h @@ -20,6 +20,7 @@ #include #include #include +#include /* * Register values. @@ -355,7 +356,6 @@ enum wm831x_parent { }; struct wm831x; -enum wm831x_auxadc; typedef int (*wm831x_auxadc_read_fn)(struct wm831x *wm831x, enum wm831x_auxadc input); -- cgit v1.1 From 54fc4037ac449acf96ab88c3e65633c997df8a84 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sat, 9 Mar 2013 17:46:45 +0800 Subject: mfd: ab8500-gpadc: Complain if we fail to enable vtvout LDO Since commit c8801a8e "regulator: core: Mark all get and enable calls as __must_check", we must check return value of regulator_enable() to silence below build warning. CC drivers/mfd/ab8500-gpadc.o drivers/mfd/ab8500-gpadc.c: In function 'ab8500_gpadc_runtime_resume': drivers/mfd/ab8500-gpadc.c:598:18: warning: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Wunused-result] drivers/mfd/ab8500-gpadc.c: In function 'ab8500_gpadc_probe': drivers/mfd/ab8500-gpadc.c:655:18: warning: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Wunused-result] Also convert to devm_regulator_get(), this fixes a missing regulator_put() call in ab8500_gpadc_remove(). Signed-off-by: Axel Lin Signed-off-by: Samuel Ortiz --- drivers/mfd/ab8500-gpadc.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c index b1f3561..5f341a5 100644 --- a/drivers/mfd/ab8500-gpadc.c +++ b/drivers/mfd/ab8500-gpadc.c @@ -594,9 +594,12 @@ static int ab8500_gpadc_runtime_suspend(struct device *dev) static int ab8500_gpadc_runtime_resume(struct device *dev) { struct ab8500_gpadc *gpadc = dev_get_drvdata(dev); + int ret; - regulator_enable(gpadc->regu); - return 0; + ret = regulator_enable(gpadc->regu); + if (ret) + dev_err(dev, "Failed to enable vtvout LDO: %d\n", ret); + return ret; } static int ab8500_gpadc_runtime_idle(struct device *dev) @@ -643,7 +646,7 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) } /* VTVout LDO used to power up ab8500-GPADC */ - gpadc->regu = regulator_get(&pdev->dev, "vddadc"); + gpadc->regu = devm_regulator_get(&pdev->dev, "vddadc"); if (IS_ERR(gpadc->regu)) { ret = PTR_ERR(gpadc->regu); dev_err(gpadc->dev, "failed to get vtvout LDO\n"); @@ -652,7 +655,11 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, gpadc); - regulator_enable(gpadc->regu); + ret = regulator_enable(gpadc->regu); + if (ret) { + dev_err(gpadc->dev, "Failed to enable vtvout LDO: %d\n", ret); + goto fail_enable; + } pm_runtime_set_autosuspend_delay(gpadc->dev, GPADC_AUDOSUSPEND_DELAY); pm_runtime_use_autosuspend(gpadc->dev); @@ -663,6 +670,8 @@ static int ab8500_gpadc_probe(struct platform_device *pdev) list_add_tail(&gpadc->node, &ab8500_gpadc_list); dev_dbg(gpadc->dev, "probe success\n"); return 0; + +fail_enable: fail_irq: free_irq(gpadc->irq, gpadc); fail: -- cgit v1.1 From d52701d39e3765ad5087da1a6e8bbcaaf04bcd9c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Tue, 12 Mar 2013 09:39:01 +0100 Subject: mfd: ab8500: Kill "reg" property from binding The ab8500 device is a child of the prcmu device, which is a memory mapped bus device, whose children are addressable using physical memory addresses, not using mailboxes, so a mailbox number in the ab8500 node cannot be parsed by DT. Nothing uses this number, since it was only introduced as part of the failed attempt to clean up prcmu mailbox handling, and we can simply remove it. Signed-off-by: Arnd Bergmann Signed-off-by: Samuel Ortiz --- Documentation/devicetree/bindings/mfd/ab8500.txt | 6 +----- arch/arm/boot/dts/dbx5x0.dtsi | 3 +-- arch/arm/boot/dts/href.dtsi | 2 +- arch/arm/boot/dts/hrefv60plus.dts | 2 +- arch/arm/boot/dts/snowball.dts | 2 +- 5 files changed, 5 insertions(+), 10 deletions(-) diff --git a/Documentation/devicetree/bindings/mfd/ab8500.txt b/Documentation/devicetree/bindings/mfd/ab8500.txt index 13b707b..c3a14e0 100644 --- a/Documentation/devicetree/bindings/mfd/ab8500.txt +++ b/Documentation/devicetree/bindings/mfd/ab8500.txt @@ -13,9 +13,6 @@ Required parent device properties: 4 = active high level-sensitive 8 = active low level-sensitive -Optional parent device properties: -- reg : contains the PRCMU mailbox address for the AB8500 i2c port - The AB8500 consists of a large and varied group of sub-devices: Device IRQ Names Supply Names Description @@ -86,9 +83,8 @@ Non-standard child device properties: - stericsson,amic2-bias-vamic1 : Analoge Mic wishes to use a non-standard Vamic - stericsson,earpeice-cmv : Earpeice voltage (only: 950 | 1100 | 1270 | 1580) -ab8500@5 { +ab8500 { compatible = "stericsson,ab8500"; - reg = <5>; /* mailbox 5 is i2c */ interrupts = <0 40 0x4>; interrupt-controller; #interrupt-cells = <2>; diff --git a/arch/arm/boot/dts/dbx5x0.dtsi b/arch/arm/boot/dts/dbx5x0.dtsi index 69140ba..9de9309 100644 --- a/arch/arm/boot/dts/dbx5x0.dtsi +++ b/arch/arm/boot/dts/dbx5x0.dtsi @@ -319,9 +319,8 @@ }; }; - ab8500@5 { + ab8500 { compatible = "stericsson,ab8500"; - reg = <5>; /* mailbox 5 is i2c */ interrupt-parent = <&intc>; interrupts = <0 40 0x4>; interrupt-controller; diff --git a/arch/arm/boot/dts/href.dtsi b/arch/arm/boot/dts/href.dtsi index 592fb9d..379128e 100644 --- a/arch/arm/boot/dts/href.dtsi +++ b/arch/arm/boot/dts/href.dtsi @@ -221,7 +221,7 @@ }; }; - ab8500@5 { + ab8500 { ab8500-regulators { ab8500_ldo_aux1_reg: ab8500_ldo_aux1 { regulator-name = "V-DISPLAY"; diff --git a/arch/arm/boot/dts/hrefv60plus.dts b/arch/arm/boot/dts/hrefv60plus.dts index 55f4191..2b587a7 100644 --- a/arch/arm/boot/dts/hrefv60plus.dts +++ b/arch/arm/boot/dts/hrefv60plus.dts @@ -158,7 +158,7 @@ }; }; - ab8500@5 { + ab8500 { ab8500-regulators { ab8500_ldo_aux1_reg: ab8500_ldo_aux1 { regulator-name = "V-DISPLAY"; diff --git a/arch/arm/boot/dts/snowball.dts b/arch/arm/boot/dts/snowball.dts index 27f31a5..d3ec32f 100644 --- a/arch/arm/boot/dts/snowball.dts +++ b/arch/arm/boot/dts/snowball.dts @@ -298,7 +298,7 @@ }; }; - ab8500@5 { + ab8500 { ab8500-regulators { ab8500_ldo_aux1_reg: ab8500_ldo_aux1 { regulator-name = "V-DISPLAY"; -- cgit v1.1 From 47ce9c4821fa41ef72c1004e1a362d08334cd717 Mon Sep 17 00:00:00 2001 From: Santosh Rastapur Date: Fri, 8 Mar 2013 03:35:29 +0000 Subject: cxgb4: Allow for backward compatibility with new VPD scheme. New scheme calls for 3rd party VPD at offset 0x0 and Chelsio VPD at offset 0x400 of the function. If no 3rd party VPD is present, then a copy of Chelsio's VPD will be at offset 0x0 to keep in line with PCI spec which requires the VPD to be present at offset 0x0. Signed-off-by: Santosh Rastapur Signed-off-by: Vipul Pandya Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c index 4ce6203..8049268 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c @@ -497,8 +497,9 @@ int t4_memory_write(struct adapter *adap, int mtype, u32 addr, u32 len, } #define EEPROM_STAT_ADDR 0x7bfc -#define VPD_BASE 0 #define VPD_LEN 512 +#define VPD_BASE 0x400 +#define VPD_BASE_OLD 0 /** * t4_seeprom_wp - enable/disable EEPROM write protection @@ -524,7 +525,7 @@ int t4_seeprom_wp(struct adapter *adapter, bool enable) int get_vpd_params(struct adapter *adapter, struct vpd_params *p) { u32 cclk_param, cclk_val; - int i, ret; + int i, ret, addr; int ec, sn; u8 *vpd, csum; unsigned int vpdr_len, kw_offset, id_len; @@ -533,7 +534,12 @@ int get_vpd_params(struct adapter *adapter, struct vpd_params *p) if (!vpd) return -ENOMEM; - ret = pci_read_vpd(adapter->pdev, VPD_BASE, VPD_LEN, vpd); + ret = pci_read_vpd(adapter->pdev, VPD_BASE, sizeof(u32), vpd); + if (ret < 0) + goto out; + addr = *vpd == 0x82 ? VPD_BASE : VPD_BASE_OLD; + + ret = pci_read_vpd(adapter->pdev, addr, VPD_LEN, vpd); if (ret < 0) goto out; -- cgit v1.1 From 4660c7f498c07c43173142ea95145e9dac5a6d14 Mon Sep 17 00:00:00 2001 From: David Ward Date: Mon, 11 Mar 2013 10:43:39 +0000 Subject: net/ipv4: Ensure that location of timestamp option is stored This is needed in order to detect if the timestamp option appears more than once in a packet, to remove the option if the packet is fragmented, etc. My previous change neglected to store the option location when the router addresses were prespecified and Pointer > Length. But now the option location is also stored when Flag is an unrecognized value, to ensure these option handling behaviors are still performed. Signed-off-by: David Ward Signed-off-by: David S. Miller --- net/ipv4/ip_options.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c index 310a364..ec72645 100644 --- a/net/ipv4/ip_options.c +++ b/net/ipv4/ip_options.c @@ -370,7 +370,6 @@ int ip_options_compile(struct net *net, } switch (optptr[3]&0xF) { case IPOPT_TS_TSONLY: - opt->ts = optptr - iph; if (skb) timeptr = &optptr[optptr[2]-1]; opt->ts_needtime = 1; @@ -381,7 +380,6 @@ int ip_options_compile(struct net *net, pp_ptr = optptr + 2; goto error; } - opt->ts = optptr - iph; if (rt) { spec_dst_fill(&spec_dst, skb); memcpy(&optptr[optptr[2]-1], &spec_dst, 4); @@ -396,7 +394,6 @@ int ip_options_compile(struct net *net, pp_ptr = optptr + 2; goto error; } - opt->ts = optptr - iph; { __be32 addr; memcpy(&addr, &optptr[optptr[2]-1], 4); @@ -429,12 +426,12 @@ int ip_options_compile(struct net *net, pp_ptr = optptr + 3; goto error; } - opt->ts = optptr - iph; if (skb) { optptr[3] = (optptr[3]&0xF)|((overflow+1)<<4); opt->is_changed = 1; } } + opt->ts = optptr - iph; break; case IPOPT_RA: if (optlen < 4) { -- cgit v1.1 From 3da889b616164bde76a37350cf28e0d17a94e979 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 11 Mar 2013 13:52:17 +0000 Subject: bridge: reserve space for IFLA_BRPORT_FAST_LEAVE The bridge multicast fast leave feature was added sufficient space was not reserved in the netlink message. This means the flag may be lost in netlink events and results of queries. Found by observation while looking up some netlink stuff for discussion with Vlad. Problem introduced by commit c2d3babfafbb9f6629cfb47139758e59a5eb0d80 Author: David S. Miller Date: Wed Dec 5 16:24:45 2012 -0500 bridge: implement multicast fast leave Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 27aa3ee..db12a0f 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -29,6 +29,7 @@ static inline size_t br_port_info_size(void) + nla_total_size(1) /* IFLA_BRPORT_MODE */ + nla_total_size(1) /* IFLA_BRPORT_GUARD */ + nla_total_size(1) /* IFLA_BRPORT_PROTECT */ + + nla_total_size(1) /* IFLA_BRPORT_FAST_LEAVE */ + 0; } -- cgit v1.1 From 27f423fe120df3a7488dd750b4e0508f03c325b6 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 2 Mar 2013 00:10:30 +0100 Subject: ARM: spear3xx: Use correct pl080 header file The definitions have move around recently, causing build errors in spear3xx for all configurations: spear3xx.c:47:5: error: 'PL080_BSIZE_16' undeclared here (not in a function) spear3xx.c:47:23: error: 'PL080_CONTROL_SB_SIZE_SHIFT' undeclared here (not in a function) spear3xx.c:48:22: error: 'PL080_CONTROL_DB_SIZE_SHIFT' undeclared here (not in a function) Signed-off-by: Arnd Bergmann Cc: Alessandro Rubini Cc: Viresh Kumar --- arch/arm/mach-spear3xx/spear3xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-spear3xx/spear3xx.c b/arch/arm/mach-spear3xx/spear3xx.c index f9d754f..d2b3937 100644 --- a/arch/arm/mach-spear3xx/spear3xx.c +++ b/arch/arm/mach-spear3xx/spear3xx.c @@ -14,7 +14,7 @@ #define pr_fmt(fmt) "SPEAr3xx: " fmt #include -#include +#include #include #include #include -- cgit v1.1 From 3f315bef23075ea8a98a6fe4221a83b83456d970 Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Mon, 11 Mar 2013 00:21:48 +0000 Subject: netconsole: don't call __netpoll_cleanup() while atomic __netpoll_cleanup() is called in netconsole_netdev_event() while holding a spinlock. Release/acquire the spinlock before/after it and restart the loop. Also, disable the netconsole completely, because we won't have chance after the restart of the loop, and might end up in a situation where nt->enabled == 1 and nt->np.dev == NULL. Signed-off-by: Veaceslav Falico Acked-by: Neil Horman Signed-off-by: David S. Miller --- drivers/net/netconsole.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/drivers/net/netconsole.c b/drivers/net/netconsole.c index 37add21..59ac143 100644 --- a/drivers/net/netconsole.c +++ b/drivers/net/netconsole.c @@ -666,6 +666,7 @@ static int netconsole_netdev_event(struct notifier_block *this, goto done; spin_lock_irqsave(&target_list_lock, flags); +restart: list_for_each_entry(nt, &target_list, list) { netconsole_target_get(nt); if (nt->np.dev == dev) { @@ -678,15 +679,17 @@ static int netconsole_netdev_event(struct notifier_block *this, case NETDEV_UNREGISTER: /* * rtnl_lock already held + * we might sleep in __netpoll_cleanup() */ - if (nt->np.dev) { - __netpoll_cleanup(&nt->np); - dev_put(nt->np.dev); - nt->np.dev = NULL; - } + spin_unlock_irqrestore(&target_list_lock, flags); + __netpoll_cleanup(&nt->np); + spin_lock_irqsave(&target_list_lock, flags); + dev_put(nt->np.dev); + nt->np.dev = NULL; nt->enabled = 0; stopped = true; - break; + netconsole_target_put(nt); + goto restart; } } netconsole_target_put(nt); -- cgit v1.1 From 069552777a121eb39da29de4bc0383483dbe1f7e Mon Sep 17 00:00:00 2001 From: Matt Porter Date: Tue, 5 Mar 2013 10:58:22 -0500 Subject: ARM: davinci: edma: fix dmaengine induced null pointer dereference on da830 This adds additional error checking to the private edma api implementation to catch the case where the edma_alloc_slot() has an invalid controller parameter. The edma dmaengine wrapper driver relies on this condition being handled in order to avoid setting up a second edma dmaengine instance on DA830. Verfied using a DA850 with the second EDMA controller platform instance removed to simulate a DA830 which only has a single EDMA controller. Reported-by: Tomas Novotny Signed-off-by: Matt Porter Cc: stable@vger.kernel.org # v3.7.x+ Tested-by: Tomas Novotny Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/dma.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c index a685e97..45b7c71 100644 --- a/arch/arm/mach-davinci/dma.c +++ b/arch/arm/mach-davinci/dma.c @@ -743,6 +743,9 @@ EXPORT_SYMBOL(edma_free_channel); */ int edma_alloc_slot(unsigned ctlr, int slot) { + if (!edma_cc[ctlr]) + return -EINVAL; + if (slot >= 0) slot = EDMA_CHAN_SLOT(slot); -- cgit v1.1 From 418df63adac56841ef6b0f1fcf435bc64d4ed177 Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Tue, 12 Mar 2013 13:00:42 +0100 Subject: ARM: 7670/1: fix the memset fix Commit 455bd4c430b0 ("ARM: 7668/1: fix memset-related crashes caused by recent GCC (4.7.2) optimizations") attempted to fix a compliance issue with the memset return value. However the memset itself became broken by that patch for misaligned pointers. This fixes the above by branching over the entry code from the misaligned fixup code to avoid reloading the original pointer. Also, because the function entry alignment is wrong in the Thumb mode compilation, that fixup code is moved to the end. While at it, the entry instructions are slightly reworked to help dual issue pipelines. Signed-off-by: Nicolas Pitre Tested-by: Alexander Holler Signed-off-by: Russell King --- arch/arm/lib/memset.S | 33 +++++++++++++-------------------- 1 file changed, 13 insertions(+), 20 deletions(-) diff --git a/arch/arm/lib/memset.S b/arch/arm/lib/memset.S index d912e73..94b0650 100644 --- a/arch/arm/lib/memset.S +++ b/arch/arm/lib/memset.S @@ -14,31 +14,15 @@ .text .align 5 - .word 0 - -1: subs r2, r2, #4 @ 1 do we have enough - blt 5f @ 1 bytes to align with? - cmp r3, #2 @ 1 - strltb r1, [ip], #1 @ 1 - strleb r1, [ip], #1 @ 1 - strb r1, [ip], #1 @ 1 - add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3)) -/* - * The pointer is now aligned and the length is adjusted. Try doing the - * memset again. - */ ENTRY(memset) -/* - * Preserve the contents of r0 for the return value. - */ - mov ip, r0 - ands r3, ip, #3 @ 1 unaligned? - bne 1b @ 1 + ands r3, r0, #3 @ 1 unaligned? + mov ip, r0 @ preserve r0 as return value + bne 6f @ 1 /* * we know that the pointer in ip is aligned to a word boundary. */ - orr r1, r1, r1, lsl #8 +1: orr r1, r1, r1, lsl #8 orr r1, r1, r1, lsl #16 mov r3, r1 cmp r2, #16 @@ -127,4 +111,13 @@ ENTRY(memset) tst r2, #1 strneb r1, [ip], #1 mov pc, lr + +6: subs r2, r2, #4 @ 1 do we have enough + blt 5b @ 1 bytes to align with? + cmp r3, #2 @ 1 + strltb r1, [ip], #1 @ 1 + strleb r1, [ip], #1 @ 1 + strb r1, [ip], #1 @ 1 + add r2, r2, r3 @ 1 (r2 = r2 - (4 - r3)) + b 1b ENDPROC(memset) -- cgit v1.1 From a930d8790552658140d7d0d2e316af4f0d76a512 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 12 Mar 2013 02:59:49 +0000 Subject: vfs: fix pipe counter breakage If you open a pipe for neither read nor write, the pipe code will not add any usage counters to the pipe, causing the 'struct pipe_inode_info" to be potentially released early. That doesn't normally matter, since you cannot actually use the pipe, but the pipe release code - particularly fasync handling - still expects the actual pipe infrastructure to all be there. And rather than adding NULL pointer checks, let's just disallow this case, the same way we already do for the named pipe ("fifo") case. This is ancient going back to pre-2.4 days, and until trinity, nobody naver noticed. Reported-by: Dave Jones Signed-off-by: Linus Torvalds --- fs/pipe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/pipe.c b/fs/pipe.c index 64a494c..2234f3f 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -863,6 +863,9 @@ pipe_rdwr_open(struct inode *inode, struct file *filp) { int ret = -ENOENT; + if (!(filp->f_mode & (FMODE_READ|FMODE_WRITE))) + return -EINVAL; + mutex_lock(&inode->i_mutex); if (inode->i_pipe) { -- cgit v1.1 From 45549a68a592dd1daed72aaf4df2295931b93138 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Sun, 10 Mar 2013 10:15:54 +0800 Subject: ARM:net: an issue for k which is u32, never < 0 k is u32 which never < 0, need type cast, or cause issue. Signed-off-by: Chen Gang Acked-by: Russell King Acked-by: Mircea Gherzan Signed-off-by: David S. Miller --- arch/arm/net/bpf_jit_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/net/bpf_jit_32.c b/arch/arm/net/bpf_jit_32.c index 6828ef6..a0bd8a7 100644 --- a/arch/arm/net/bpf_jit_32.c +++ b/arch/arm/net/bpf_jit_32.c @@ -576,7 +576,7 @@ load_ind: /* x = ((*(frame + k)) & 0xf) << 2; */ ctx->seen |= SEEN_X | SEEN_DATA | SEEN_CALL; /* the interpreter should deal with the negative K */ - if (k < 0) + if ((int)k < 0) return -1; /* offset in r1: we might have to take the slow path */ emit_mov_i(r_off, k, ctx); -- cgit v1.1 From b5f82b1044daef74059f454353a2ee97acbbe620 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 12 Mar 2013 16:47:30 +0100 Subject: ALSA: hda - Fix snd_hda_get_num_raw_conns() to return a correct value In the connection list expansion in hda_codec.c and hda_proc.c, the value returned from snd_hda_get_num_raw_conns() is used as the array size to store the connection list. However, the function returns simply a raw value of the AC_PAR_CONNLIST_LEN parameter, and the widget list with ranges isn't considered there. Thus it may return a smaller size than the actual list, which results in -ENOSPC in snd_hda_get_raw_conections(). This patch fixes the bug by parsing the connection list correctly also for snd_hda_get_num_raw_conns(). Reported-and-tested-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 97c68dd..a9ebcf9 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -494,7 +494,7 @@ static unsigned int get_num_conns(struct hda_codec *codec, hda_nid_t nid) int snd_hda_get_num_raw_conns(struct hda_codec *codec, hda_nid_t nid) { - return get_num_conns(codec, nid) & AC_CLIST_LENGTH; + return snd_hda_get_raw_connections(codec, nid, NULL, 0); } /** @@ -517,9 +517,6 @@ int snd_hda_get_raw_connections(struct hda_codec *codec, hda_nid_t nid, hda_nid_t prev_nid; int null_count = 0; - if (snd_BUG_ON(!conn_list || max_conns <= 0)) - return -EINVAL; - parm = get_num_conns(codec, nid); if (!parm) return 0; @@ -545,7 +542,8 @@ int snd_hda_get_raw_connections(struct hda_codec *codec, hda_nid_t nid, AC_VERB_GET_CONNECT_LIST, 0); if (parm == -1 && codec->bus->rirb_error) return -EIO; - conn_list[0] = parm & mask; + if (conn_list) + conn_list[0] = parm & mask; return 1; } @@ -580,14 +578,20 @@ int snd_hda_get_raw_connections(struct hda_codec *codec, hda_nid_t nid, continue; } for (n = prev_nid + 1; n <= val; n++) { + if (conn_list) { + if (conns >= max_conns) + return -ENOSPC; + conn_list[conns] = n; + } + conns++; + } + } else { + if (conn_list) { if (conns >= max_conns) return -ENOSPC; - conn_list[conns++] = n; + conn_list[conns] = val; } - } else { - if (conns >= max_conns) - return -ENOSPC; - conn_list[conns++] = val; + conns++; } prev_nid = val; } -- cgit v1.1 From c80a8512ee3a8e1f7c3704140ea55f21dc6bd651 Mon Sep 17 00:00:00 2001 From: Li RongQing Date: Mon, 11 Mar 2013 20:30:44 +0000 Subject: net/core: move vlan_depth out of while loop in skb_network_protocol() [ Bug added added in commit 05e8ef4ab2d8087d (net: factor out skb_mac_gso_segment() from skb_gso_segment() ) ] move vlan_depth out of while loop, or else vlan_depth always is ETH_HLEN, can not be increased, and lead to infinite loop when frame has two vlan headers. Signed-off-by: Li RongQing Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index dffbef7..d540ced 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -2219,9 +2219,9 @@ struct sk_buff *skb_mac_gso_segment(struct sk_buff *skb, struct sk_buff *segs = ERR_PTR(-EPROTONOSUPPORT); struct packet_offload *ptype; __be16 type = skb->protocol; + int vlan_depth = ETH_HLEN; while (type == htons(ETH_P_8021Q)) { - int vlan_depth = ETH_HLEN; struct vlan_hdr *vh; if (unlikely(!pskb_may_pull(skb, vlan_depth + VLAN_HLEN))) -- cgit v1.1 From 09081e5b47f6842669bb645e015deedf191244f4 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Sat, 9 Mar 2013 12:43:54 +0100 Subject: tty: serial: mpc5xxx: fix PSC clock name bug mpc512x platform clock code names PSC clocks as "pscX_mclk" but the driver tries to get "pscX_clk" clock and this results in errors like: mpc52xx-psc-uart 80011700.psc: Failed to get PSC clock entry! The problem appears when opening ttyPSC devices other than the system's serial console. Since getting and enabling the PSC clock fails, uart port startup doesn't succeed and tty flag TTY_IO_ERROR remains set causing further errors in tty ioctls, i.e. 'strace stty -F /dev/ttyPSC1' shows: open("/dev/ttyPSC1", O_RDONLY|O_NONBLOCK|O_LARGEFILE) = 3 dup2(3, 0) = 0 close(3) = 0 fcntl64(0, F_GETFL) = 0x10800 (flags O_RDONLY|O_NONBLOCK|O_LARGEFILE) fcntl64(0, F_SETFL, O_RDONLY|O_LARGEFILE) = 0 ioctl(0, TCGETS, 0xbff89038) = -1 EIO (Input/output error) Only request PSC clock names that the platform actually provides. Signed-off-by: Anatolij Gustschin Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/mpc52xx_uart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/mpc52xx_uart.c b/drivers/tty/serial/mpc52xx_uart.c index c0e1fad..018bad9 100644 --- a/drivers/tty/serial/mpc52xx_uart.c +++ b/drivers/tty/serial/mpc52xx_uart.c @@ -550,7 +550,7 @@ static int mpc512x_psc_clock(struct uart_port *port, int enable) return 0; psc_num = (port->mapbase & 0xf00) >> 8; - snprintf(clk_name, sizeof(clk_name), "psc%d_clk", psc_num); + snprintf(clk_name, sizeof(clk_name), "psc%d_mclk", psc_num); psc_clk = clk_get(port->dev, clk_name); if (IS_ERR(psc_clk)) { dev_err(port->dev, "Failed to get PSC clock entry!\n"); -- cgit v1.1 From 5771a8051d5ebaac0651a957885f55b5f6221a02 Mon Sep 17 00:00:00 2001 From: Tony Prisk Date: Sat, 9 Mar 2013 18:44:37 +1300 Subject: tty: serial: vt8500: Unneccessary duplicated clock code removed Remove the extra code left over when the serial driver was changed to require a clock. There is no fallback to 24Mhz as a clock is now required. Also remove a second call to of_clk_get which is unnecessary. Signed-off-by: Tony Prisk Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/vt8500_serial.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c index a3f9dd5..705240e 100644 --- a/drivers/tty/serial/vt8500_serial.c +++ b/drivers/tty/serial/vt8500_serial.c @@ -611,14 +611,7 @@ static int vt8500_serial_probe(struct platform_device *pdev) vt8500_port->uart.dev = &pdev->dev; vt8500_port->uart.flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF; - vt8500_port->clk = of_clk_get(pdev->dev.of_node, 0); - if (!IS_ERR(vt8500_port->clk)) { - vt8500_port->uart.uartclk = clk_get_rate(vt8500_port->clk); - } else { - /* use the default of 24Mhz if not specified and warn */ - pr_warn("%s: serial clock source not specified\n", __func__); - vt8500_port->uart.uartclk = 24000000; - } + vt8500_port->uart.uartclk = clk_get_rate(vt8500_port->clk); snprintf(vt8500_port->name, sizeof(vt8500_port->name), "VT8500 UART%d", pdev->id); -- cgit v1.1 From e06c93cacb82dd147266fd1bdb2d0a0bd45ff2c1 Mon Sep 17 00:00:00 2001 From: Ley Foon Tan Date: Thu, 7 Mar 2013 10:28:37 +0800 Subject: tty/serial: Add support for Altera serial port Add support for Altera 8250/16550 compatible serial port. Signed-off-by: Ley Foon Tan Cc: stable Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/tty/serial/of-serial.txt | 3 +++ drivers/tty/serial/8250/8250.c | 23 +++++++++++++++++++++- drivers/tty/serial/of_serial.c | 6 ++++++ include/uapi/linux/serial_core.h | 5 ++++- 4 files changed, 35 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt index 1e1145c..8f01cb1 100644 --- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt +++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt @@ -11,6 +11,9 @@ Required properties: - "nvidia,tegra20-uart" - "nxp,lpc3220-uart" - "ibm,qpace-nwp-serial" + - "altr,16550-FIFO32" + - "altr,16550-FIFO64" + - "altr,16550-FIFO128" - "serial" if the port type is unknown. - reg : offset and length of the register set for the device. - interrupts : should contain uart interrupt. diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 0efc815..661096d 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -301,7 +301,28 @@ static const struct serial8250_config uart_config[] = { }, [PORT_8250_CIR] = { .name = "CIR port" - } + }, + [PORT_ALTR_16550_F32] = { + .name = "Altera 16550 FIFO32", + .fifo_size = 32, + .tx_loadsz = 32, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_ALTR_16550_F64] = { + .name = "Altera 16550 FIFO64", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_ALTR_16550_F128] = { + .name = "Altera 16550 FIFO128", + .fifo_size = 128, + .tx_loadsz = 128, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, }; /* Uart divisor latch read */ diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c index d587460..b025d54 100644 --- a/drivers/tty/serial/of_serial.c +++ b/drivers/tty/serial/of_serial.c @@ -241,6 +241,12 @@ static struct of_device_id of_platform_serial_table[] = { { .compatible = "ns16850", .data = (void *)PORT_16850, }, { .compatible = "nvidia,tegra20-uart", .data = (void *)PORT_TEGRA, }, { .compatible = "nxp,lpc3220-uart", .data = (void *)PORT_LPC3220, }, + { .compatible = "altr,16550-FIFO32", + .data = (void *)PORT_ALTR_16550_F32, }, + { .compatible = "altr,16550-FIFO64", + .data = (void *)PORT_ALTR_16550_F64, }, + { .compatible = "altr,16550-FIFO128", + .data = (void *)PORT_ALTR_16550_F128, }, #ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL { .compatible = "ibm,qpace-nwp-serial", .data = (void *)PORT_NWPSERIAL, }, diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h index b6a23a4..74c2bf7 100644 --- a/include/uapi/linux/serial_core.h +++ b/include/uapi/linux/serial_core.h @@ -51,7 +51,10 @@ #define PORT_8250_CIR 23 /* CIR infrared port, has its own driver */ #define PORT_XR17V35X 24 /* Exar XR17V35x UARTs */ #define PORT_BRCM_TRUMANAGE 25 -#define PORT_MAX_8250 25 /* max port ID */ +#define PORT_ALTR_16550_F32 26 /* Altera 16550 UART with 32 FIFOs */ +#define PORT_ALTR_16550_F64 27 /* Altera 16550 UART with 64 FIFOs */ +#define PORT_ALTR_16550_F128 28 /* Altera 16550 UART with 128 FIFOs */ +#define PORT_MAX_8250 28 /* max port ID */ /* * ARM specific type numbers. These are not currently guaranteed -- cgit v1.1 From d13402a4a944e72612a9ec5c9190e35717c02a9d Mon Sep 17 00:00:00 2001 From: Scott Ashcroft Date: Sun, 3 Mar 2013 21:35:06 +0000 Subject: Fix 4 port and add support for 8 port 'Unknown' PCI serial port cards I've managed to find an 8 port version of the card 4 port card which was discussed here: http://marc.info/?l=linux-serial&m=120760744205314&w=2 Looking back at that thread there were two issues in the original patch. 1) The I/O ports for the UARTs are within BAR2 not BAR0. This can been seen in the original post. 2) A serial quirk isn't needed as these cards have no memory in BAR0 which makes pci_plx9050_init just return. This patch fixes the 4 port support to use BAR2, removes the bogus quirk and adds support for the 8 port card. $ lspci -vvv -n -s 00:08.0 00:08.0 0780: 10b5:9050 (rev 01) Subsystem: 10b5:1588 Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Kernel driver in use: serial $ dmesg | grep 0000:00:08.0: [ 0.083320] pci 0000:00:08.0: [10b5:9050] type 0 class 0x000780 [ 0.083355] pci 0000:00:08.0: reg 14: [io 0xff00-0xff7f] [ 0.083369] pci 0000:00:08.0: reg 18: [io 0xfe00-0xfe3f] [ 0.083382] pci 0000:00:08.0: reg 1c: [io 0xfd00-0xfd07] [ 0.083460] pci 0000:00:08.0: PME# supported from D0 D3hot [ 1.212867] 0000:00:08.0: ttyS4 at I/O 0xfe00 (irq = 17) is a 16550A [ 1.233073] 0000:00:08.0: ttyS5 at I/O 0xfe08 (irq = 17) is a 16550A [ 1.253270] 0000:00:08.0: ttyS6 at I/O 0xfe10 (irq = 17) is a 16550A [ 1.273468] 0000:00:08.0: ttyS7 at I/O 0xfe18 (irq = 17) is a 16550A [ 1.293666] 0000:00:08.0: ttyS8 at I/O 0xfe20 (irq = 17) is a 16550A [ 1.313863] 0000:00:08.0: ttyS9 at I/O 0xfe28 (irq = 17) is a 16550A [ 1.334061] 0000:00:08.0: ttyS10 at I/O 0xfe30 (irq = 17) is a 16550A [ 1.354258] 0000:00:08.0: ttyS11 at I/O 0xfe38 (irq = 17) is a 16550A Signed-off-by: Scott Ashcroft Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pci.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 791c5a7..85c6bf9 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1571,6 +1571,7 @@ pci_wch_ch353_setup(struct serial_private *priv, /* Unknown vendors/cards - this should not be in linux/pci_ids.h */ #define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584 +#define PCI_SUBDEVICE_ID_UNKNOWN_0x1588 0x1588 /* * Master list of serial port init/setup/exit quirks. @@ -1852,15 +1853,6 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { }, { .vendor = PCI_VENDOR_ID_PLX, - .device = PCI_DEVICE_ID_PLX_9050, - .subvendor = PCI_VENDOR_ID_PLX, - .subdevice = PCI_SUBDEVICE_ID_UNKNOWN_0x1584, - .init = pci_plx9050_init, - .setup = pci_default_setup, - .exit = pci_plx9050_exit, - }, - { - .vendor = PCI_VENDOR_ID_PLX, .device = PCI_DEVICE_ID_PLX_ROMULUS, .subvendor = PCI_VENDOR_ID_PLX, .subdevice = PCI_DEVICE_ID_PLX_ROMULUS, @@ -3733,7 +3725,12 @@ static struct pci_device_id serial_pci_tbl[] = { { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_VENDOR_ID_PLX, PCI_SUBDEVICE_ID_UNKNOWN_0x1584, 0, 0, - pbn_b0_4_115200 }, + pbn_b2_4_115200 }, + /* Unknown card - subdevice 0x1588 */ + { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, + PCI_VENDOR_ID_PLX, + PCI_SUBDEVICE_ID_UNKNOWN_0x1588, 0, 0, + pbn_b2_8_115200 }, { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, PCI_SUBVENDOR_ID_KEYSPAN, PCI_SUBDEVICE_ID_KEYSPAN_SX2, 0, 0, -- cgit v1.1 From 8d2f8cd424ca0b99001f3ff4f5db87c4e525f366 Mon Sep 17 00:00:00 2001 From: Wang YanQing Date: Fri, 1 Mar 2013 11:47:20 +0800 Subject: serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller 01:08.0 Communication controller: NetMos Technology PCI 9835 Multi-I/O Controller (rev 01) Subsystem: Device [1000:0012] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pci.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index 85c6bf9..aa76825 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -4788,6 +4788,10 @@ static struct pci_device_id serial_pci_tbl[] = { PCI_VENDOR_ID_IBM, 0x0299, 0, 0, pbn_b0_bt_2_115200 }, + { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9835, + 0x1000, 0x0012, + 0, 0, pbn_b0_bt_2_115200 }, + { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9901, 0xA000, 0x1000, 0, 0, pbn_b0_1_115200 }, -- cgit v1.1 From 064256feab4f94d2dc894b181e2f82769966f6c7 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Sun, 24 Feb 2013 14:08:39 +0100 Subject: serial: bcm63xx_uart: fix compilation after "TTY: switch tty_insert_flip_char" 92a19f9cec9a80ad93c06e115822deb729e2c6ad introduced a local variable with the same name as the argument to bcm_uart_do_rx, breaking compilation. Fix this by renaming the new variable and its uses where expected. Signed-off-by: Jonas Gorski Acked-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/bcm63xx_uart.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/tty/serial/bcm63xx_uart.c b/drivers/tty/serial/bcm63xx_uart.c index 719594e..52a3ecd 100644 --- a/drivers/tty/serial/bcm63xx_uart.c +++ b/drivers/tty/serial/bcm63xx_uart.c @@ -235,7 +235,7 @@ static const char *bcm_uart_type(struct uart_port *port) */ static void bcm_uart_do_rx(struct uart_port *port) { - struct tty_port *port = &port->state->port; + struct tty_port *tty_port = &port->state->port; unsigned int max_count; /* limit number of char read in interrupt, should not be @@ -260,7 +260,7 @@ static void bcm_uart_do_rx(struct uart_port *port) bcm_uart_writel(port, val, UART_CTL_REG); port->icount.overrun++; - tty_insert_flip_char(port, 0, TTY_OVERRUN); + tty_insert_flip_char(tty_port, 0, TTY_OVERRUN); } if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY))) @@ -299,11 +299,11 @@ static void bcm_uart_do_rx(struct uart_port *port) if ((cstat & port->ignore_status_mask) == 0) - tty_insert_flip_char(port, c, flag); + tty_insert_flip_char(tty_port, c, flag); } while (--max_count); - tty_flip_buffer_push(port); + tty_flip_buffer_push(tty_port); } /* -- cgit v1.1 From 77e372a3d82e5e4878ce1962207edd766773cc76 Mon Sep 17 00:00:00 2001 From: Sean Young Date: Fri, 22 Feb 2013 16:27:19 +0000 Subject: tty/8250_pnp: serial port detection regression since v3.7 The InsydeH2O BIOS (version dated 09/12/2011) has the following in its pnp resouces for its serial ports: $ cat /sys/bus/pnp/devices/00:0b/resources state = active io disabled irq disabled We do not check if the resources are disabled, and create a bogus ttyS* device. Since commit 835d844d1a28e (8250_pnp: do pnp probe before legacy probe) we get a bogus ttyS0, which prevents the legacy probe from detecting it. Note, the BIOS can also be upgraded, fixing this problem, but for people who can't do that, this fix is needed. Reported-by: Vincent Deffontaines Tested-by: Vincent Deffontaines Signed-off-by: Sean Young Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pnp.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c index 35d9ab9..b3455a9 100644 --- a/drivers/tty/serial/8250/8250_pnp.c +++ b/drivers/tty/serial/8250/8250_pnp.c @@ -429,6 +429,7 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) { struct uart_8250_port uart; int ret, line, flags = dev_id->driver_data; + struct resource *res = NULL; if (flags & UNKNOWN_DEV) { ret = serial_pnp_guess_board(dev); @@ -439,11 +440,12 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id) memset(&uart, 0, sizeof(uart)); if (pnp_irq_valid(dev, 0)) uart.port.irq = pnp_irq(dev, 0); - if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) { - uart.port.iobase = pnp_port_start(dev, 2); - uart.port.iotype = UPIO_PORT; - } else if (pnp_port_valid(dev, 0)) { - uart.port.iobase = pnp_port_start(dev, 0); + if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) + res = pnp_get_resource(dev, IORESOURCE_IO, 2); + else if (pnp_port_valid(dev, 0)) + res = pnp_get_resource(dev, IORESOURCE_IO, 0); + if (pnp_resource_enabled(res)) { + uart.port.iobase = res->start; uart.port.iotype = UPIO_PORT; } else if (pnp_mem_valid(dev, 0)) { uart.port.mapbase = pnp_mem_start(dev, 0); -- cgit v1.1 From 827aa0d36d486f359808c8fb931cf7a71011a09d Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Sat, 9 Mar 2013 23:16:44 +0100 Subject: tty: serial: fix typo "ARCH_S5P6450" This could have been either ARCH_S5P64X0 or CPU_S5P6450. Looking at commit 2555e663b367b8d555e76023f4de3f6338c28d6c ("ARM: S5P64X0: Add UART serial support for S5P6450") - which added this typo - makes clear this should be CPU_S5P6450. Signed-off-by: Paul Bolle Acked-by: Kukjin Kim Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index cf9210d..40ddbe4 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -218,7 +218,7 @@ config SERIAL_SAMSUNG_UARTS_4 config SERIAL_SAMSUNG_UARTS int depends on PLAT_SAMSUNG - default 6 if ARCH_S5P6450 + default 6 if CPU_S5P6450 default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 default 3 help -- cgit v1.1 From f2b8dfd9e480c3db3bad0c25c590a5d11b31f4ef Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Sun, 10 Mar 2013 10:33:40 -0400 Subject: serial: 8250: Keep 8250. module options functional after driver rename With commit 835d844d1 (8250_pnp: do pnp probe before legacy probe), the 8250 driver was renamed to 8250_core. This means any existing usage of the 8259. module parameters or as a kernel command line switch is now broken, as the 8250_core driver doesn't parse options belonging to something called "8250". To solve this, we redefine the module options in a dummy function using a redefined MODULE_PARAM_PREFX when built into the kernel. In the case where we're building as a module, we provide an alias to the old 8250 name. The dummy function prevents compiler errors due to global variable redefinitions that happen as part of the module_param_ macro expansions. Signed-off-by: Josh Boyer Acked-by: Jiri Slaby Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 661096d..cf6a538 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -3417,3 +3417,32 @@ module_param_array(probe_rsa, ulong, &probe_rsa_count, 0444); MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA"); #endif MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR); + +#ifndef MODULE +/* This module was renamed to 8250_core in 3.7. Keep the old "8250" name + * working as well for the module options so we don't break people. We + * need to keep the names identical and the convenient macros will happily + * refuse to let us do that by failing the build with redefinition errors + * of global variables. So we stick them inside a dummy function to avoid + * those conflicts. The options still get parsed, and the redefined + * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive. + * + * This is hacky. I'm sorry. + */ +static void __used s8250_options(void) +{ +#undef MODULE_PARAM_PREFIX +#define MODULE_PARAM_PREFIX "8250." + + module_param_cb(share_irqs, ¶m_ops_uint, &share_irqs, 0644); + module_param_cb(nr_uarts, ¶m_ops_uint, &nr_uarts, 0644); + module_param_cb(skip_txen_test, ¶m_ops_uint, &skip_txen_test, 0644); +#ifdef CONFIG_SERIAL_8250_RSA + __module_param_call(MODULE_PARAM_PREFIX, probe_rsa, + ¶m_array_ops, .arr = &__param_arr_probe_rsa, + 0444, -1); +#endif +} +#else +MODULE_ALIAS("8250"); +#endif -- cgit v1.1 From c51d41a1dd8f23a06a4ed651ebb9617de7f59368 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 12 Mar 2013 10:10:32 +0100 Subject: tty: serial: fix typo "SERIAL_S3C2412" The Kconfig symbol SERIAL_S3C2412 got removed in commit da121506eb03ee5daea55404709110b798bd61d9 ("serial: samsung: merge probe() function from all SoC specific extensions"). But it also added a last reference to that symbol. The commit and the tree make clear that CPU_S3C2412 should have been used instead. Signed-off-by: Paul Bolle Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 40ddbe4..7e7006f 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -211,7 +211,7 @@ config SERIAL_SAMSUNG config SERIAL_SAMSUNG_UARTS_4 bool depends on PLAT_SAMSUNG - default y if !(CPU_S3C2410 || SERIAL_S3C2412 || CPU_S3C2440 || CPU_S3C2442) + default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) help Internal node for the common case of 4 Samsung compatible UARTs -- cgit v1.1 From a57e82a18779ab8a5e5a1f5841cef937cf578913 Mon Sep 17 00:00:00 2001 From: Steve Conklin Date: Thu, 7 Mar 2013 17:19:33 -0600 Subject: usb: serial: Add Rigblaster Advantage to device table The Rigblaster Advantage is an amateur radio interface sold by West Mountain Radio. It contains a cp210x serial interface but the device ID is not in the driver. Signed-off-by: Steve Conklin Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 67088ce..4747d1c 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -85,6 +85,7 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x10C4, 0x813F) }, /* Tams Master Easy Control */ { USB_DEVICE(0x10C4, 0x814A) }, /* West Mountain Radio RIGblaster P&P */ { USB_DEVICE(0x10C4, 0x814B) }, /* West Mountain Radio RIGtalk */ + { USB_DEVICE(0x2405, 0x0003) }, /* West Mountain Radio RIGblaster Advantage */ { USB_DEVICE(0x10C4, 0x8156) }, /* B&G H3000 link cable */ { USB_DEVICE(0x10C4, 0x815E) }, /* Helicomm IP-Link 1220-DVM */ { USB_DEVICE(0x10C4, 0x815F) }, /* Timewave HamLinkUSB */ -- cgit v1.1 From 2721e72dd10f71a3ba90f59781becf02638aa0d9 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 12 Mar 2013 11:32:32 -0400 Subject: tracing: Fix race in snapshot swapping Although the swap is wrapped with a spin_lock, the assignment of the temp buffer used to swap is not within that lock. It needs to be moved into that lock, otherwise two swaps happening on two different CPUs, can end up using the wrong temp buffer to assign in the swap. Luckily, all current callers of the swap function appear to have their own locks. But in case something is added that allows two different callers to call the swap, then there's a chance that this race can trigger and corrupt the buffers. New code is coming soon that will allow for this race to trigger. I've Cc'd stable, so this bug will not show up if someone backports one of the changes that can trigger this bug. Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1f835a8..53df283 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -704,7 +704,7 @@ __update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu) void update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu) { - struct ring_buffer *buf = tr->buffer; + struct ring_buffer *buf; if (trace_stop_count) return; @@ -719,6 +719,7 @@ update_max_tr(struct trace_array *tr, struct task_struct *tsk, int cpu) arch_spin_lock(&ftrace_max_lock); + buf = tr->buffer; tr->buffer = max_tr.buffer; max_tr.buffer = buf; -- cgit v1.1 From 4f42f80a8f08d4c3f52c4267361241885d5dee3a Mon Sep 17 00:00:00 2001 From: Lukas Czerner Date: Tue, 12 Mar 2013 12:40:04 -0400 Subject: ext4: use s_extent_max_zeroout_kb value as number of kb Currently when converting extent to initialized, we have to decide whether to zeroout part/all of the uninitialized extent in order to avoid extent tree growing rapidly. The decision is made by comparing the size of the extent with the configurable value s_extent_max_zeroout_kb which is in kibibytes units. However when converting it to number of blocks we currently use it as it was in bytes. This is obviously bug and it will result in ext4 _never_ zeroout extents, but rather always split and convert parts to initialized while leaving the rest uninitialized in default setting. Fix this by using s_extent_max_zeroout_kb as kibibytes. Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" Cc: stable@vger.kernel.org --- fs/ext4/extents.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index bd69e90..e2bb929 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -3264,7 +3264,7 @@ static int ext4_ext_convert_to_initialized(handle_t *handle, if (EXT4_EXT_MAY_ZEROOUT & split_flag) max_zeroout = sbi->s_extent_max_zeroout_kb >> - inode->i_sb->s_blocksize_bits; + (inode->i_sb->s_blocksize_bits - 10); /* If extent is less than s_max_zeroout_kb, zeroout directly */ if (max_zeroout && (ee_len <= max_zeroout)) { -- cgit v1.1 From fae8563b25f73dc584a07bcda7a82750ff4f7672 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Wed, 27 Feb 2013 16:50:38 +0000 Subject: sfc: Only use TX push if a single descriptor is to be written Using TX push when notifying the NIC of multiple new descriptors in the ring will very occasionally cause the TX DMA engine to re-use an old descriptor. This can result in a duplicated or partly duplicated packet (new headers with old data), or an IOMMU page fault. This does not happen when the pushed descriptor is the only one written. TX push also provides little latency benefit when a packet requires more than one descriptor. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/nic.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c index 0ad790c..eaa8e87 100644 --- a/drivers/net/ethernet/sfc/nic.c +++ b/drivers/net/ethernet/sfc/nic.c @@ -376,7 +376,8 @@ efx_may_push_tx_desc(struct efx_tx_queue *tx_queue, unsigned int write_count) return false; tx_queue->empty_read_count = 0; - return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0; + return ((empty_read_count ^ write_count) & ~EFX_EMPTY_COUNT_VALID) == 0 + && tx_queue->write_count - write_count == 1; } /* For each entry inserted into the software descriptor ring, create a -- cgit v1.1 From 8aec0f5d4137532de14e6554fd5dd201ff3a3c49 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Mon, 25 Feb 2013 10:20:36 -0500 Subject: Fix: compat_rw_copy_check_uvector() misuse in aio, readv, writev, and security keys Looking at mm/process_vm_access.c:process_vm_rw() and comparing it to compat_process_vm_rw() shows that the compatibility code requires an explicit "access_ok()" check before calling compat_rw_copy_check_uvector(). The same difference seems to appear when we compare fs/read_write.c:do_readv_writev() to fs/compat.c:compat_do_readv_writev(). This subtle difference between the compat and non-compat requirements should probably be debated, as it seems to be error-prone. In fact, there are two others sites that use this function in the Linux kernel, and they both seem to get it wrong: Now shifting our attention to fs/aio.c, we see that aio_setup_iocb() also ends up calling compat_rw_copy_check_uvector() through aio_setup_vectored_rw(). Unfortunately, the access_ok() check appears to be missing. Same situation for security/keys/compat.c:compat_keyctl_instantiate_key_iov(). I propose that we add the access_ok() check directly into compat_rw_copy_check_uvector(), so callers don't have to worry about it, and it therefore makes the compat call code similar to its non-compat counterpart. Place the access_ok() check in the same location where copy_from_user() can trigger a -EFAULT error in the non-compat code, so the ABI behaviors are alike on both compat and non-compat. While we are here, fix compat_do_readv_writev() so it checks for compat_rw_copy_check_uvector() negative return values. And also, fix a memory leak in compat_keyctl_instantiate_key_iov() error handling. Acked-by: Linus Torvalds Acked-by: Al Viro Signed-off-by: Mathieu Desnoyers Signed-off-by: Linus Torvalds --- fs/compat.c | 15 +++++++-------- mm/process_vm_access.c | 8 -------- security/keys/compat.c | 4 ++-- 3 files changed, 9 insertions(+), 18 deletions(-) diff --git a/fs/compat.c b/fs/compat.c index fe40fde..d487985 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -558,6 +558,10 @@ ssize_t compat_rw_copy_check_uvector(int type, } *ret_pointer = iov; + ret = -EFAULT; + if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector))) + goto out; + /* * Single unix specification: * We should -EINVAL if an element length is not >= 0 and fitting an @@ -1080,17 +1084,12 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, if (!file->f_op) goto out; - ret = -EFAULT; - if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector))) - goto out; - - tot_len = compat_rw_copy_check_uvector(type, uvector, nr_segs, + ret = compat_rw_copy_check_uvector(type, uvector, nr_segs, UIO_FASTIOV, iovstack, &iov); - if (tot_len == 0) { - ret = 0; + if (ret <= 0) goto out; - } + tot_len = ret; ret = rw_verify_area(type, file, pos, tot_len); if (ret < 0) goto out; diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c index 926b466..fd26d04 100644 --- a/mm/process_vm_access.c +++ b/mm/process_vm_access.c @@ -429,12 +429,6 @@ compat_process_vm_rw(compat_pid_t pid, if (flags != 0) return -EINVAL; - if (!access_ok(VERIFY_READ, lvec, liovcnt * sizeof(*lvec))) - goto out; - - if (!access_ok(VERIFY_READ, rvec, riovcnt * sizeof(*rvec))) - goto out; - if (vm_write) rc = compat_rw_copy_check_uvector(WRITE, lvec, liovcnt, UIO_FASTIOV, iovstack_l, @@ -459,8 +453,6 @@ free_iovecs: kfree(iov_r); if (iov_l != iovstack_l) kfree(iov_l); - -out: return rc; } diff --git a/security/keys/compat.c b/security/keys/compat.c index 1c26176..d65fa7f 100644 --- a/security/keys/compat.c +++ b/security/keys/compat.c @@ -40,12 +40,12 @@ static long compat_keyctl_instantiate_key_iov( ARRAY_SIZE(iovstack), iovstack, &iov); if (ret < 0) - return ret; + goto err; if (ret == 0) goto no_payload_free; ret = keyctl_instantiate_key_common(id, iov, ioc, ret, ringid); - +err: if (iov != iovstack) kfree(iov); return ret; -- cgit v1.1 From 4febd95a8a85dd38b1a71fcf9726e19c7fd20039 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 7 Mar 2013 15:48:16 +1100 Subject: Select VIRT_TO_BUS directly where needed In commit 887cbce0adea ("arch Kconfig: centralise ARCH_NO_VIRT_TO_BUS") I introduced the config sybmol HAVE_VIRT_TO_BUS and selected that where needed. I am not sure what I was thinking. Instead, just directly select VIRT_TO_BUS where it is needed. Signed-off-by: Stephen Rothwell Signed-off-by: Linus Torvalds --- arch/Kconfig | 7 ------- arch/alpha/Kconfig | 2 +- arch/arm/Kconfig | 2 +- arch/avr32/Kconfig | 2 +- arch/blackfin/Kconfig | 2 +- arch/cris/Kconfig | 2 +- arch/frv/Kconfig | 2 +- arch/h8300/Kconfig | 2 +- arch/ia64/Kconfig | 2 +- arch/m32r/Kconfig | 2 +- arch/m68k/Kconfig | 2 +- arch/microblaze/Kconfig | 2 +- arch/mips/Kconfig | 2 +- arch/mn10300/Kconfig | 2 +- arch/openrisc/Kconfig | 2 +- arch/parisc/Kconfig | 2 +- arch/powerpc/Kconfig | 2 +- arch/s390/Kconfig | 2 +- arch/score/Kconfig | 2 +- arch/tile/Kconfig | 2 +- arch/unicore32/Kconfig | 2 +- arch/x86/Kconfig | 2 +- arch/xtensa/Kconfig | 2 +- mm/Kconfig | 8 ++++++-- 24 files changed, 28 insertions(+), 31 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index 5a1779c..1455579 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -319,13 +319,6 @@ config ARCH_WANT_OLD_COMPAT_IPC select ARCH_WANT_COMPAT_IPC_PARSE_VERSION bool -config HAVE_VIRT_TO_BUS - bool - help - An architecture should select this if it implements the - deprecated interface virt_to_bus(). All new architectures - should probably not select this. - config HAVE_ARCH_SECCOMP_FILTER bool help diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 5833aa4..8a33ba0 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -9,7 +9,7 @@ config ALPHA select HAVE_PERF_EVENTS select HAVE_DMA_ATTRS select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_PROBE select AUTO_IRQ_AFFINITY if SMP select GENERIC_IRQ_SHOW diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9c87fd8..a98070f 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -49,7 +49,7 @@ config ARM select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select KTIME_SCALAR select PERF_USE_VMALLOC select RTC_LIB diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig index 9b89257..c1a868d 100644 --- a/arch/avr32/Kconfig +++ b/arch/avr32/Kconfig @@ -7,7 +7,7 @@ config AVR32 select HAVE_OPROFILE select HAVE_KPROBES select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_ATOMIC64 select HARDIRQS_SW_RESEND diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index 600494c..c3f2e0b 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -33,7 +33,7 @@ config BLACKFIN select ARCH_HAVE_CUSTOM_GPIO_H select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_UID16 - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select HAVE_GENERIC_HARDIRQS select GENERIC_ATOMIC64 diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig index bb0ac66..06dd026 100644 --- a/arch/cris/Kconfig +++ b/arch/cris/Kconfig @@ -43,7 +43,7 @@ config CRIS select GENERIC_ATOMIC64 select HAVE_GENERIC_HARDIRQS select HAVE_UID16 - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW select GENERIC_IOMAP diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index 12369b1..2ce731f 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -6,7 +6,7 @@ config FRV select HAVE_PERF_EVENTS select HAVE_UID16 select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_SHOW select HAVE_DEBUG_BUGVERBOSE select ARCH_HAVE_NMI_SAFE_CMPXCHG diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig index ae8551e..79250de 100644 --- a/arch/h8300/Kconfig +++ b/arch/h8300/Kconfig @@ -5,7 +5,7 @@ config H8300 select HAVE_GENERIC_HARDIRQS select GENERIC_ATOMIC64 select HAVE_UID16 - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_WANT_IPC_PARSE_VERSION select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 33f3fdc..9a02f71 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -26,7 +26,7 @@ config IA64 select HAVE_MEMBLOCK select HAVE_MEMBLOCK_NODE_MAP select HAVE_VIRT_CPU_ACCOUNTING - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_DISCARD_MEMBLOCK select GENERIC_IRQ_PROBE select GENERIC_PENDING_IRQ if SMP diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig index 9262381..bcd17b2 100644 --- a/arch/m32r/Kconfig +++ b/arch/m32r/Kconfig @@ -10,7 +10,7 @@ config M32R select ARCH_WANT_IPC_PARSE_VERSION select HAVE_DEBUG_BUGVERBOSE select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select GENERIC_ATOMIC64 diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig index 0e708c7..6de8133 100644 --- a/arch/m68k/Kconfig +++ b/arch/m68k/Kconfig @@ -8,7 +8,7 @@ config M68K select GENERIC_IRQ_SHOW select GENERIC_ATOMIC64 select HAVE_UID16 - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_HAVE_NMI_SAFE_CMPXCHG if RMW_INSNS select GENERIC_CPU_DEVICES select GENERIC_STRNCPY_FROM_USER if MMU diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 7843d11..1323fa2 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -19,7 +19,7 @@ config MICROBLAZE select HAVE_DEBUG_KMEMLEAK select IRQ_DOMAIN select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW select GENERIC_PCI_IOMAP diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index ae9c716..cd2e21f 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -38,7 +38,7 @@ config MIPS select GENERIC_CLOCKEVENTS select GENERIC_CMOS_UPDATE select HAVE_MOD_ARCH_SPECIFIC - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select MODULES_USE_ELF_REL if MODULES select MODULES_USE_ELF_RELA if MODULES && 64BIT select CLONE_BACKWARDS diff --git a/arch/mn10300/Kconfig b/arch/mn10300/Kconfig index b06c736..428da17 100644 --- a/arch/mn10300/Kconfig +++ b/arch/mn10300/Kconfig @@ -8,7 +8,7 @@ config MN10300 select HAVE_ARCH_KGDB select GENERIC_ATOMIC64 select HAVE_NMI_WATCHDOG if MN10300_WD_TIMER - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA select OLD_SIGSUSPEND3 diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 014a648..9862d20 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -12,7 +12,7 @@ config OPENRISC select ARCH_WANT_OPTIONAL_GPIOLIB select HAVE_ARCH_TRACEHOOK select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_CHIP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index a9ff712..0339181 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -21,7 +21,7 @@ config PARISC select GENERIC_STRNCPY_FROM_USER select SYSCTL_ARCH_UNALIGN_ALLOW select HAVE_MOD_ARCH_SPECIFIC - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select MODULES_USE_ELF_RELA select CLONE_BACKWARDS select TTY # Needed for pdc_cons.c diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b89d7eb..8082151 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -98,7 +98,7 @@ config PPC select HAVE_FUNCTION_GRAPH_TRACER select SYSCTL_EXCEPTION_TRACE select ARCH_WANT_OPTIONAL_GPIOLIB - select HAVE_VIRT_TO_BUS if !PPC64 + select VIRT_TO_BUS if !PPC64 select HAVE_IDE select HAVE_IOREMAP_PROT select HAVE_EFFICIENT_UNALIGNED_ACCESS diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 4b50537..eb8fb62 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -134,7 +134,7 @@ config S390 select HAVE_SYSCALL_WRAPPERS select HAVE_UID16 if 32BIT select HAVE_VIRT_CPU_ACCOUNTING - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select INIT_ALL_POSSIBLE select KTIME_SCALAR if 32BIT select MODULES_USE_ELF_RELA diff --git a/arch/score/Kconfig b/arch/score/Kconfig index e569aa1..c8def8b 100644 --- a/arch/score/Kconfig +++ b/arch/score/Kconfig @@ -12,7 +12,7 @@ config SCORE select GENERIC_CPU_DEVICES select GENERIC_CLOCKEVENTS select HAVE_MOD_ARCH_SPECIFIC - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select MODULES_USE_ELF_REL select CLONE_BACKWARDS diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig index ff496ab..25877ae 100644 --- a/arch/tile/Kconfig +++ b/arch/tile/Kconfig @@ -17,7 +17,7 @@ config TILE select GENERIC_IRQ_SHOW select HAVE_DEBUG_BUGVERBOSE select HAVE_SYSCALL_WRAPPERS if TILEGX - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select SYS_HYPERVISOR select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_CLOCKEVENTS diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig index dc50b15..2943e3a 100644 --- a/arch/unicore32/Kconfig +++ b/arch/unicore32/Kconfig @@ -9,7 +9,7 @@ config UNICORE32 select GENERIC_ATOMIC64 select HAVE_KERNEL_LZO select HAVE_KERNEL_LZMA - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select ARCH_HAVE_CUSTOM_GPIO_H select GENERIC_FIND_FIRST_BIT select GENERIC_IRQ_PROBE diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index a4f24f5..70c0f3d 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -112,7 +112,7 @@ config X86 select GENERIC_STRNLEN_USER select HAVE_CONTEXT_TRACKING if X86_64 select HAVE_IRQ_TIME_ACCOUNTING - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select MODULES_USE_ELF_REL if X86_32 select MODULES_USE_ELF_RELA if X86_64 select CLONE_BACKWARDS if X86_32 diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig index 35876ff..b09de49 100644 --- a/arch/xtensa/Kconfig +++ b/arch/xtensa/Kconfig @@ -9,7 +9,7 @@ config XTENSA select HAVE_IDE select GENERIC_ATOMIC64 select HAVE_GENERIC_HARDIRQS - select HAVE_VIRT_TO_BUS + select VIRT_TO_BUS select GENERIC_IRQ_SHOW select GENERIC_CPU_DEVICES select MODULES_USE_ELF_RELA diff --git a/mm/Kconfig b/mm/Kconfig index ae55c1e..3bea74f 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -286,8 +286,12 @@ config NR_QUICK default "1" config VIRT_TO_BUS - def_bool y - depends on HAVE_VIRT_TO_BUS + bool + help + An architecture should select this if it implements the + deprecated interface virt_to_bus(). All new architectures + should probably not select this. + config MMU_NOTIFIER bool -- cgit v1.1 From e89ab51ffd3e9d2ddfb997546af7c9e0baab6d2f Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 8 Mar 2013 08:13:09 -0800 Subject: MAINTAINERS: Add maintainer for MAX6697, INA209, and INA2XX drivers I actively maintain those drivers and have hardware available to test changes, so add me as explicit maintainer. Signed-off-by: Guenter Roeck Acked-by: Jean Delvare --- MAINTAINERS | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 9561658..1a5aca7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4005,6 +4005,22 @@ M: Stanislaw Gruszka S: Maintained F: drivers/usb/atm/ueagle-atm.c +INA209 HARDWARE MONITOR DRIVER +M: Guenter Roeck +L: lm-sensors@lm-sensors.org +S: Maintained +F: Documentation/hwmon/ina209 +F: Documentation/devicetree/bindings/i2c/ina209.txt +F: drivers/hwmon/ina209.c + +INA2XX HARDWARE MONITOR DRIVER +M: Guenter Roeck +L: lm-sensors@lm-sensors.org +S: Maintained +F: Documentation/hwmon/ina2xx +F: drivers/hwmon/ina2xx.c +F: include/linux/platform_data/ina2xx.h + INDUSTRY PACK SUBSYSTEM (IPACK) M: Samuel Iglesias Gonsalvez M: Jens Taprogge @@ -5098,6 +5114,15 @@ S: Maintained F: Documentation/hwmon/max6650 F: drivers/hwmon/max6650.c +MAX6697 HARDWARE MONITOR DRIVER +M: Guenter Roeck +L: lm-sensors@lm-sensors.org +S: Maintained +F: Documentation/hwmon/max6697 +F: Documentation/devicetree/bindings/i2c/max6697.txt +F: drivers/hwmon/max6697.c +F: include/linux/platform_data/max6697.h + MAXIRADIO FM RADIO RECEIVER DRIVER M: Hans Verkuil L: linux-media@vger.kernel.org -- cgit v1.1 From 13938117a57f88a22f0df9722a5db7271fda85cd Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 13 Mar 2013 09:49:06 +1100 Subject: powerpc: Fix STAB initialization Commit f5339277eb8d3aed37f12a27988366f68ab68930 accidentally removed more than just iSeries bits and took out the call to stab_initialize() thus breaking support for POWER3 processors. Put it back. (Yes, nobody noticed until now ...) Signed-off-by: Benjamin Herrenschmidt CC: [v3.4+] --- arch/powerpc/mm/hash_utils_64.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 1b6e127..6ec6c19 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -759,6 +759,8 @@ void __init early_init_mmu(void) /* Initialize stab / SLB management */ if (mmu_has_feature(MMU_FTR_SLB)) slb_initialize(); + else + stab_initialize(get_paca()->stab_real); } #ifdef CONFIG_SMP -- cgit v1.1 From d63ac5f6cf31c8a83170a9509b350c1489a7262b Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 13 Mar 2013 09:55:02 +1100 Subject: powerpc: Fix cputable entry for 970MP rev 1.0 Commit 44ae3ab3358e962039c36ad4ae461ae9fb29596c forgot to update the entry for the 970MP rev 1.0 processor when moving some CPU features bits to the MMU feature bit mask. This breaks booting on some rare G5 models using that chip revision. Reported-by: Phileas Fogg Signed-off-by: Benjamin Herrenschmidt CC: [v3.0+] --- arch/powerpc/kernel/cputable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 75a3d71..19599ef 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -275,7 +275,7 @@ static struct cpu_spec __initdata cpu_specs[] = { .cpu_features = CPU_FTRS_PPC970, .cpu_user_features = COMMON_USER_POWER4 | PPC_FEATURE_HAS_ALTIVEC_COMP, - .mmu_features = MMU_FTR_HPTE_TABLE, + .mmu_features = MMU_FTRS_PPC970, .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, -- cgit v1.1 From ff2d7587c7b2a1b46abc7618f45b8cc3476d8716 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 11 Mar 2013 13:44:55 +0000 Subject: powerpc: Remove last traces of POWER4_ONLY The Kconfig symbol POWER4_ONLY got removed in commit 694caf0255dcab506d1e174c96a65ab65d96e108 ("powerpc: Remove CONFIG_POWER4_ONLY"). Remove its last traces. Signed-off-by: Paul Bolle Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/Kconfig.cputype | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index cea2f09..18e3b76 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -124,9 +124,8 @@ config 6xx select PPC_HAVE_PMU_SUPPORT config POWER3 - bool depends on PPC64 && PPC_BOOK3S - default y if !POWER4_ONLY + def_bool y config POWER4 depends on PPC64 && PPC_BOOK3S @@ -145,8 +144,7 @@ config TUNE_CELL but somewhat slower on other machines. This option only changes the scheduling of instructions, not the selection of instructions itself, so the resulting kernel will keep running on all other - machines. When building a kernel that is supposed to run only - on Cell, you should also select the POWER4_ONLY option. + machines. # this is temp to handle compat with arch=ppc config 8xx -- cgit v1.1 From 1674400aaee5b466c595a8fc310488263ce888c7 Mon Sep 17 00:00:00 2001 From: Anton Blanchard Date: Tue, 12 Mar 2013 01:51:51 +0000 Subject: powerpc: Fix -mcmodel=medium breakage in prom_init.c Commit 5ac47f7a6efb (powerpc: Relocate prom_init.c on 64bit) made prom_init.c position independent by manually relocating its entries in the TOC. We get the address of the TOC entries with the __prom_init_toc_start linker symbol. If __prom_init_toc_start ends up as an entry in the TOC then we need to add an offset to get the current address. This is the case for older toolchains. On the other hand, if we have a newer toolchain that supports -mcmodel=medium then __prom_init_toc_start will be created by a relative offset from r2 (the TOC pointer). Since r2 has already been relocated, nothing more needs to be done. Adding an offset in this case is wrong and Aaro Koskinen and Alexander Graf have noticed noticed G5 and OpenBIOS breakage. Alan Modra suggested we just use r2 to get at the TOC which is simpler and works with both old and new toolchains. Reported-by: Alexander Graf Signed-off-by: Anton Blanchard Tested-by: Aaro Koskinen Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/prom_init.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 7f7fb7f..13f8d16 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -2832,11 +2832,13 @@ static void unreloc_toc(void) { } #else -static void __reloc_toc(void *tocstart, unsigned long offset, - unsigned long nr_entries) +static void __reloc_toc(unsigned long offset, unsigned long nr_entries) { unsigned long i; - unsigned long *toc_entry = (unsigned long *)tocstart; + unsigned long *toc_entry; + + /* Get the start of the TOC by using r2 directly. */ + asm volatile("addi %0,2,-0x8000" : "=b" (toc_entry)); for (i = 0; i < nr_entries; i++) { *toc_entry = *toc_entry + offset; @@ -2850,8 +2852,7 @@ static void reloc_toc(void) unsigned long nr_entries = (__prom_init_toc_end - __prom_init_toc_start) / sizeof(long); - /* Need to add offset to get at __prom_init_toc_start */ - __reloc_toc(__prom_init_toc_start + offset, offset, nr_entries); + __reloc_toc(offset, nr_entries); mb(); } @@ -2864,8 +2865,7 @@ static void unreloc_toc(void) mb(); - /* __prom_init_toc_start has been relocated, no need to add offset */ - __reloc_toc(__prom_init_toc_start, -offset, nr_entries); + __reloc_toc(-offset, nr_entries); } #endif #endif -- cgit v1.1 From 2d798a3f20ae992b0b69a2b68c04ada397c32ed4 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 12 Mar 2013 20:21:34 +0100 Subject: ARM: w1-gpio: fix erroneous gpio requests Fix regression introduced by commit d2323cf773 ("onewire: w1-gpio: add ext_pullup_enable pin in platform data") which added a gpio entry to the platform data, but did not add the required initialisers to the board files using it. Consequently, the driver would request gpio 0 at probe, which could break other uses of the corresponding pin. On AT91 requesting gpio 0 changes the pin muxing for PIOA0, which, for instance, breaks SPI0 on at91sam9g20. Cc: stable Signed-off-by: Johan Hovold Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Greg Kroah-Hartman --- arch/arm/mach-at91/board-foxg20.c | 1 + arch/arm/mach-at91/board-stamp9g20.c | 1 + arch/arm/mach-ixp4xx/vulcan-setup.c | 1 + arch/arm/mach-pxa/raumfeld.c | 1 + 4 files changed, 4 insertions(+) diff --git a/arch/arm/mach-at91/board-foxg20.c b/arch/arm/mach-at91/board-foxg20.c index 2ea7059..c20a870 100644 --- a/arch/arm/mach-at91/board-foxg20.c +++ b/arch/arm/mach-at91/board-foxg20.c @@ -176,6 +176,7 @@ static struct w1_gpio_platform_data w1_gpio_pdata = { /* If you choose to use a pin other than PB16 it needs to be 3.3V */ .pin = AT91_PIN_PB16, .is_open_drain = 1, + .ext_pullup_enable_pin = -EINVAL, }; static struct platform_device w1_device = { diff --git a/arch/arm/mach-at91/board-stamp9g20.c b/arch/arm/mach-at91/board-stamp9g20.c index a033b8d..869cbec 100644 --- a/arch/arm/mach-at91/board-stamp9g20.c +++ b/arch/arm/mach-at91/board-stamp9g20.c @@ -188,6 +188,7 @@ static struct spi_board_info portuxg20_spi_devices[] = { static struct w1_gpio_platform_data w1_gpio_pdata = { .pin = AT91_PIN_PA29, .is_open_drain = 1, + .ext_pullup_enable_pin = -EINVAL, }; static struct platform_device w1_device = { diff --git a/arch/arm/mach-ixp4xx/vulcan-setup.c b/arch/arm/mach-ixp4xx/vulcan-setup.c index d42730a..d599e35 100644 --- a/arch/arm/mach-ixp4xx/vulcan-setup.c +++ b/arch/arm/mach-ixp4xx/vulcan-setup.c @@ -163,6 +163,7 @@ static struct platform_device vulcan_max6369 = { static struct w1_gpio_platform_data vulcan_w1_gpio_pdata = { .pin = 14, + .ext_pullup_enable_pin = -EINVAL, }; static struct platform_device vulcan_w1_gpio = { diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c index af41888..969b0ba 100644 --- a/arch/arm/mach-pxa/raumfeld.c +++ b/arch/arm/mach-pxa/raumfeld.c @@ -505,6 +505,7 @@ static struct w1_gpio_platform_data w1_gpio_platform_data = { .pin = GPIO_ONE_WIRE, .is_open_drain = 0, .enable_external_pullup = w1_enable_external_pullup, + .ext_pullup_enable_pin = -EINVAL, }; struct platform_device raumfeld_w1_gpio_device = { -- cgit v1.1 From 01230551e7c2fb9a1c2519b356d703851049cbe0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 8 Mar 2013 11:07:59 +0100 Subject: w1-gpio: remove erroneous __exit and __exit_p() Commit 8a1861d997 ("w1-gpio: Simplify & get rid of defines") changed (apparently unknowingly) the driver to a hotpluggable platform-device driver but did not not update the section markers for probe and remove (to __devinit/exit, which have since been removed). A later commit fixed the section mismatch for probe, but left remove marked with __exit. Signed-off-by: Johan Hovold Cc: stable # 3.8 Signed-off-by: Greg Kroah-Hartman --- drivers/w1/masters/w1-gpio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index d39dfa4..012817a 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -158,7 +158,7 @@ static int w1_gpio_probe(struct platform_device *pdev) return err; } -static int __exit w1_gpio_remove(struct platform_device *pdev) +static int w1_gpio_remove(struct platform_device *pdev) { struct w1_bus_master *master = platform_get_drvdata(pdev); struct w1_gpio_platform_data *pdata = pdev->dev.platform_data; @@ -210,7 +210,7 @@ static struct platform_driver w1_gpio_driver = { .of_match_table = of_match_ptr(w1_gpio_dt_ids), }, .probe = w1_gpio_probe, - .remove = __exit_p(w1_gpio_remove), + .remove = w1_gpio_remove, .suspend = w1_gpio_suspend, .resume = w1_gpio_resume, }; -- cgit v1.1 From 34ccd8738e34180af34544d2bdd053e60e44a224 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 8 Mar 2013 11:08:00 +0100 Subject: w1-gpio: fix unused variable warning Commit 8a1861d997 ("w1-gpio: Simplify & get rid of defines") removed the compile guards from the device-tree id table, thereby generating a warning when building without device-tree support. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/w1/masters/w1-gpio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/w1/masters/w1-gpio.c b/drivers/w1/masters/w1-gpio.c index 012817a..46d9701 100644 --- a/drivers/w1/masters/w1-gpio.c +++ b/drivers/w1/masters/w1-gpio.c @@ -47,11 +47,13 @@ static u8 w1_gpio_read_bit(void *data) return gpio_get_value(pdata->pin) ? 1 : 0; } +#if defined(CONFIG_OF) static struct of_device_id w1_gpio_dt_ids[] = { { .compatible = "w1-gpio" }, {} }; MODULE_DEVICE_TABLE(of, w1_gpio_dt_ids); +#endif static int w1_gpio_probe_dt(struct platform_device *pdev) { -- cgit v1.1 From 9d1817cab2f030f6af360e961cc69bb1da8ad765 Mon Sep 17 00:00:00 2001 From: Marcin Jurkowski Date: Sat, 2 Mar 2013 14:50:15 +0100 Subject: w1: fix oops when w1_search is called from netlink connector On Sat, Mar 02, 2013 at 10:45:10AM +0100, Sven Geggus wrote: > This is the bad commit I found doing git bisect: > 04f482faf50535229a5a5c8d629cf963899f857c is the first bad commit > commit 04f482faf50535229a5a5c8d629cf963899f857c > Author: Patrick McHardy > Date: Mon Mar 28 08:39:36 2011 +0000 Good job. I was too lazy to bisect for bad commit;) Reading the code I found problematic kthread_should_stop call from netlink connector which causes the oops. After applying a patch, I've been testing owfs+w1 setup for nearly two days and it seems to work very reliable (no hangs, no memleaks etc). More detailed description and possible fix is given below: Function w1_search can be called from either kthread or netlink callback. While the former works fine, the latter causes oops due to kthread_should_stop invocation. This patch adds a check if w1_search is serving netlink command, skipping kthread_should_stop invocation if so. Signed-off-by: Marcin Jurkowski Acked-by: Evgeniy Polyakov Cc: Josh Boyer Tested-by: Sven Geggus Signed-off-by: Greg Kroah-Hartman Cc: stable # 3.0+ --- drivers/w1/w1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index 7994d933..7ce277d2b 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -924,7 +924,8 @@ void w1_search(struct w1_master *dev, u8 search_type, w1_slave_found_callback cb tmp64 = (triplet_ret >> 2); rn |= (tmp64 << i); - if (kthread_should_stop()) { + /* ensure we're called from kthread and not by netlink callback */ + if (!dev->priv && kthread_should_stop()) { mutex_unlock(&dev->bus_mutex); dev_dbg(&dev->dev, "Abort w1_search\n"); return; -- cgit v1.1 From 3d374d09f16f64ab4d71704cbe621514d36cd0b1 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 6 Mar 2013 12:35:31 -0800 Subject: final removal of CONFIG_EXPERIMENTAL Remove "config EXPERIMENTAL" itself, now that every "depends on" it has been removed from the tree. Signed-off-by: Kees Cook Signed-off-by: Greg Kroah-Hartman --- init/Kconfig | 4 ---- 1 file changed, 4 deletions(-) diff --git a/init/Kconfig b/init/Kconfig index 22616cd..5341d72 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -28,10 +28,6 @@ config BUILDTIME_EXTABLE_SORT menu "General setup" -config EXPERIMENTAL - bool - default y - config BROKEN bool -- cgit v1.1 From c0f5ecee4e741667b2493c742b60b6218d40b3aa Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Tue, 12 Mar 2013 14:52:42 +0100 Subject: USB: cdc-wdm: fix buffer overflow The buffer for responses must not overflow. If this would happen, set a flag, drop the data and return an error after user space has read all remaining data. Signed-off-by: Oliver Neukum CC: stable@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 5f0cb41..122d056 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -56,6 +56,7 @@ MODULE_DEVICE_TABLE (usb, wdm_ids); #define WDM_RESPONDING 7 #define WDM_SUSPENDING 8 #define WDM_RESETTING 9 +#define WDM_OVERFLOW 10 #define WDM_MAX 16 @@ -155,6 +156,7 @@ static void wdm_in_callback(struct urb *urb) { struct wdm_device *desc = urb->context; int status = urb->status; + int length = urb->actual_length; spin_lock(&desc->iuspin); clear_bit(WDM_RESPONDING, &desc->flags); @@ -185,9 +187,17 @@ static void wdm_in_callback(struct urb *urb) } desc->rerr = status; - desc->reslength = urb->actual_length; - memmove(desc->ubuf + desc->length, desc->inbuf, desc->reslength); - desc->length += desc->reslength; + if (length + desc->length > desc->wMaxCommand) { + /* The buffer would overflow */ + set_bit(WDM_OVERFLOW, &desc->flags); + } else { + /* we may already be in overflow */ + if (!test_bit(WDM_OVERFLOW, &desc->flags)) { + memmove(desc->ubuf + desc->length, desc->inbuf, length); + desc->length += length; + desc->reslength = length; + } + } skip_error: wake_up(&desc->wait); @@ -435,6 +445,11 @@ retry: rv = -ENODEV; goto err; } + if (test_bit(WDM_OVERFLOW, &desc->flags)) { + clear_bit(WDM_OVERFLOW, &desc->flags); + rv = -ENOBUFS; + goto err; + } i++; if (file->f_flags & O_NONBLOCK) { if (!test_bit(WDM_READ, &desc->flags)) { @@ -478,6 +493,7 @@ retry: spin_unlock_irq(&desc->iuspin); goto retry; } + if (!desc->reslength) { /* zero length read */ dev_dbg(&desc->intf->dev, "%s: zero length - clearing WDM_READ\n", __func__); clear_bit(WDM_READ, &desc->flags); @@ -1004,6 +1020,7 @@ static int wdm_post_reset(struct usb_interface *intf) struct wdm_device *desc = wdm_find_device(intf); int rv; + clear_bit(WDM_OVERFLOW, &desc->flags); clear_bit(WDM_RESETTING, &desc->flags); rv = recover_from_urb_loss(desc); mutex_unlock(&desc->wlock); -- cgit v1.1 From fa7614ddd6c2368b8cd54cc67ab4b767af0a2a50 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 12 Mar 2013 18:27:41 -0700 Subject: fs: Readd the fs module aliases. I had assumed that the only use of module aliases for filesystems prior to "fs: Limit sys_mount to only request filesystem modules." was in request_module. It turns out I was wrong. At least mkinitcpio in Arch linux uses these aliases. So readd the preexising aliases, to keep from breaking userspace. Userspace eventually will have to follow and use the same aliases the kernel does. So at some point we may be delete these aliases without problems. However that day is not today. Signed-off-by: "Eric W. Biederman" --- fs/ext4/super.c | 2 ++ fs/freevxfs/vxfs_super.c | 1 + fs/isofs/inode.c | 1 + fs/nfs/super.c | 1 + fs/sysv/super.c | 1 + net/sunrpc/rpc_pipe.c | 1 + 6 files changed, 7 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 34e8552..b3818b4 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -91,6 +91,7 @@ static struct file_system_type ext2_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("ext2"); +MODULE_ALIAS("ext2"); #define IS_EXT2_SB(sb) ((sb)->s_bdev->bd_holder == &ext2_fs_type) #else #define IS_EXT2_SB(sb) (0) @@ -106,6 +107,7 @@ static struct file_system_type ext3_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("ext3"); +MODULE_ALIAS("ext3"); #define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type) #else #define IS_EXT3_SB(sb) (0) diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index 4550743..e37eb27 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -258,6 +258,7 @@ static struct file_system_type vxfs_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("vxfs"); /* makes mount -t vxfs autoload the module */ +MODULE_ALIAS("vxfs"); static int __init vxfs_init(void) diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index a67f16e..d9b8aeb 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -1557,6 +1557,7 @@ static struct file_system_type iso9660_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("iso9660"); +MODULE_ALIAS("iso9660"); static int __init init_iso9660_fs(void) { diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 95cdcb2..2f8a29d 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -335,6 +335,7 @@ struct file_system_type nfs4_fs_type = { .fs_flags = FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA, }; MODULE_ALIAS_FS("nfs4"); +MODULE_ALIAS("nfs4"); EXPORT_SYMBOL_GPL(nfs4_fs_type); static int __init register_nfs4_fs(void) diff --git a/fs/sysv/super.c b/fs/sysv/super.c index a39938b..d0c6a00 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -555,6 +555,7 @@ static struct file_system_type v7_fs_type = { .fs_flags = FS_REQUIRES_DEV, }; MODULE_ALIAS_FS("v7"); +MODULE_ALIAS("v7"); static int __init init_sysv_fs(void) { diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index a0f48a5..a9129f8 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -1175,6 +1175,7 @@ static struct file_system_type rpc_pipe_fs_type = { .kill_sb = rpc_kill_sb, }; MODULE_ALIAS_FS("rpc_pipefs"); +MODULE_ALIAS("rpc_pipefs"); static void init_once(void *foo) -- cgit v1.1 From 5857f70c8a62377c2304d8ad27e579881728fc5a Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 4 Mar 2013 14:32:54 -0800 Subject: idr: fix new kernel-doc warnings Fix new kernel-doc warnings in idr: Warning(include/linux/idr.h:113): No description found for parameter 'idr' Warning(include/linux/idr.h:113): Excess function parameter 'idp' description in 'idr_find' Warning(lib/idr.c:232): Excess function parameter 'id' description in 'sub_alloc' Warning(lib/idr.c:232): Excess function parameter 'id' description in 'sub_alloc' Signed-off-by: Randy Dunlap Acked-by: Tejun Heo Signed-off-by: Linus Torvalds --- include/linux/idr.h | 2 +- lib/idr.c | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) diff --git a/include/linux/idr.h b/include/linux/idr.h index a6f38b5..8c1f81f 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -99,7 +99,7 @@ static inline void idr_preload_end(void) /** * idr_find - return pointer for given id - * @idp: idr handle + * @idr: idr handle * @id: lookup key * * Return the pointer given the id it has been registered with. A %NULL diff --git a/lib/idr.c b/lib/idr.c index 00739aa..4f82a28 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -214,7 +214,6 @@ EXPORT_SYMBOL(idr_pre_get); * sub_alloc - try to allocate an id without growing the tree depth * @idp: idr handle * @starting_id: id to start search at - * @id: pointer to the allocated handle * @pa: idr_layer[MAX_IDR_LEVEL] used as backtrack buffer * @gfp_mask: allocation mask for idr_layer_alloc() * @layer_idr: optional idr passed to idr_layer_alloc() -- cgit v1.1 From 20f22ab42e9c832bde6e9a7ed04cdc73ec737e5b Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 4 Mar 2013 14:32:59 -0800 Subject: signals: fix new kernel-doc warnings Fix new kernel-doc warnings in kernel/signal.c: Warning(kernel/signal.c:2689): No description found for parameter 'uset' Warning(kernel/signal.c:2689): Excess function parameter 'set' description in 'sys_rt_sigpending' Signed-off-by: Randy Dunlap Cc: Alexander Viro Signed-off-by: Linus Torvalds --- kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/signal.c b/kernel/signal.c index 2ec870a..d63c79e 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -2682,7 +2682,7 @@ static int do_sigpending(void *set, unsigned long sigsetsize) /** * sys_rt_sigpending - examine a pending signal that has been raised * while blocked - * @set: stores pending signals + * @uset: stores pending signals * @sigsetsize: size of sigset_t type or larger */ SYSCALL_DEFINE2(rt_sigpending, sigset_t __user *, uset, size_t, sigsetsize) -- cgit v1.1 From 6c23cbbd5056b155401b0a2b5567d530e6c750c4 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 5 Mar 2013 10:00:24 -0800 Subject: futex: fix kernel-doc notation and spello Fix kernel-doc warning in futex.c and convert 'Returns' to the new Return: kernel-doc notation format. Warning(kernel/futex.c:2286): Excess function parameter 'clockrt' description in 'futex_wait_requeue_pi' Fix one spello. Signed-off-by: Randy Dunlap Signed-off-by: Linus Torvalds --- kernel/futex.c | 46 +++++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 23 deletions(-) diff --git a/kernel/futex.c b/kernel/futex.c index f0090a9..b26dcfc 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -223,7 +223,8 @@ static void drop_futex_key_refs(union futex_key *key) * @rw: mapping needs to be read/write (values: VERIFY_READ, * VERIFY_WRITE) * - * Returns a negative error code or 0 + * Return: a negative error code or 0 + * * The key words are stored in *key on success. * * For shared mappings, it's (page->index, file_inode(vma->vm_file), @@ -705,9 +706,9 @@ lookup_pi_state(u32 uval, struct futex_hash_bucket *hb, * be "current" except in the case of requeue pi. * @set_waiters: force setting the FUTEX_WAITERS bit (1) or not (0) * - * Returns: - * 0 - ready to wait - * 1 - acquired the lock + * Return: + * 0 - ready to wait; + * 1 - acquired the lock; * <0 - error * * The hb->lock and futex_key refs shall be held by the caller. @@ -1191,9 +1192,9 @@ void requeue_pi_wake_futex(struct futex_q *q, union futex_key *key, * then direct futex_lock_pi_atomic() to force setting the FUTEX_WAITERS bit. * hb1 and hb2 must be held by the caller. * - * Returns: - * 0 - failed to acquire the lock atomicly - * 1 - acquired the lock + * Return: + * 0 - failed to acquire the lock atomically; + * 1 - acquired the lock; * <0 - error */ static int futex_proxy_trylock_atomic(u32 __user *pifutex, @@ -1254,8 +1255,8 @@ static int futex_proxy_trylock_atomic(u32 __user *pifutex, * Requeue waiters on uaddr1 to uaddr2. In the requeue_pi case, try to acquire * uaddr2 atomically on behalf of the top waiter. * - * Returns: - * >=0 - on success, the number of tasks requeued or woken + * Return: + * >=0 - on success, the number of tasks requeued or woken; * <0 - on error */ static int futex_requeue(u32 __user *uaddr1, unsigned int flags, @@ -1536,8 +1537,8 @@ static inline void queue_me(struct futex_q *q, struct futex_hash_bucket *hb) * The q->lock_ptr must not be held by the caller. A call to unqueue_me() must * be paired with exactly one earlier call to queue_me(). * - * Returns: - * 1 - if the futex_q was still queued (and we removed unqueued it) + * Return: + * 1 - if the futex_q was still queued (and we removed unqueued it); * 0 - if the futex_q was already removed by the waking thread */ static int unqueue_me(struct futex_q *q) @@ -1707,9 +1708,9 @@ static long futex_wait_restart(struct restart_block *restart); * the pi_state owner as well as handle race conditions that may allow us to * acquire the lock. Must be called with the hb lock held. * - * Returns: - * 1 - success, lock taken - * 0 - success, lock not taken + * Return: + * 1 - success, lock taken; + * 0 - success, lock not taken; * <0 - on error (-EFAULT) */ static int fixup_owner(u32 __user *uaddr, struct futex_q *q, int locked) @@ -1824,8 +1825,8 @@ static void futex_wait_queue_me(struct futex_hash_bucket *hb, struct futex_q *q, * Return with the hb lock held and a q.key reference on success, and unlocked * with no q.key reference on failure. * - * Returns: - * 0 - uaddr contains val and hb has been locked + * Return: + * 0 - uaddr contains val and hb has been locked; * <1 - -EFAULT or -EWOULDBLOCK (uaddr does not contain val) and hb is unlocked */ static int futex_wait_setup(u32 __user *uaddr, u32 val, unsigned int flags, @@ -2203,9 +2204,9 @@ pi_faulted: * the wakeup and return the appropriate error code to the caller. Must be * called with the hb lock held. * - * Returns - * 0 - no early wakeup detected - * <0 - -ETIMEDOUT or -ERESTARTNOINTR + * Return: + * 0 = no early wakeup detected; + * <0 = -ETIMEDOUT or -ERESTARTNOINTR */ static inline int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb, @@ -2247,7 +2248,6 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb, * @val: the expected value of uaddr * @abs_time: absolute timeout * @bitset: 32 bit wakeup bitset set by userspace, defaults to all - * @clockrt: whether to use CLOCK_REALTIME (1) or CLOCK_MONOTONIC (0) * @uaddr2: the pi futex we will take prior to returning to user-space * * The caller will wait on uaddr and will be requeued by futex_requeue() to @@ -2258,7 +2258,7 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb, * there was a need to. * * We call schedule in futex_wait_queue_me() when we enqueue and return there - * via the following: + * via the following-- * 1) wakeup on uaddr2 after an atomic lock acquisition by futex_requeue() * 2) wakeup on uaddr2 after a requeue * 3) signal @@ -2276,8 +2276,8 @@ int handle_early_requeue_pi_wakeup(struct futex_hash_bucket *hb, * * If 4 or 7, we cleanup and return with -ETIMEDOUT. * - * Returns: - * 0 - On success + * Return: + * 0 - On success; * <0 - On error */ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags, -- cgit v1.1 From d4cb776f33c7343e805dc3d6dd71a80eff9f66f1 Mon Sep 17 00:00:00 2001 From: Jonas Bonn Date: Thu, 28 Feb 2013 06:55:22 +0100 Subject: openrisc: require gpiolib The recent move to GPIO descriptors breaks the OpenRISC build. Requiring gpiolib resolves this; using gpiolib exclusively is also the recommended way forward for all arches by the developers working on these GPIO changes. The non-gpiolib implementation for OpenRISC never worked anyway... Signed-off-by: Jonas Bonn --- arch/openrisc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 9862d20..804051a 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -9,7 +9,7 @@ config OPENRISC select OF_EARLY_FLATTREE select IRQ_DOMAIN select HAVE_MEMBLOCK - select ARCH_WANT_OPTIONAL_GPIOLIB + select ARCH_REQUIRE_GPIOLIB select HAVE_ARCH_TRACEHOOK select HAVE_GENERIC_HARDIRQS select VIRT_TO_BUS -- cgit v1.1 From 00c30e0681bf5563c8670c0ab419886f56626430 Mon Sep 17 00:00:00 2001 From: Jonas Bonn Date: Thu, 28 Feb 2013 06:37:05 +0100 Subject: asm-generic: move cmpxchg*_local defs to cmpxchg.h asm/cmpxchg.h can be included on its own and needs to be self-consistent. The definitions for the cmpxchg*_local macros, as such, need to be part of this file. This fixes a build issue on OpenRISC since the system.h smashing patch 96f951edb1f1bdbbc99b0cd458f9808bb83d58ae that introdued the direct inclusion asm/cmpxchg.h into linux/llist.h. CC: David Howells Signed-off-by: Jonas Bonn Acked-by: Arnd Bergmann --- include/asm-generic/atomic.h | 6 ------ include/asm-generic/cmpxchg.h | 10 ++++++++++ 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h index 1ced641..33bd2de 100644 --- a/include/asm-generic/atomic.h +++ b/include/asm-generic/atomic.h @@ -136,12 +136,6 @@ static inline void atomic_dec(atomic_t *v) #define atomic_xchg(ptr, v) (xchg(&(ptr)->counter, (v))) #define atomic_cmpxchg(v, old, new) (cmpxchg(&((v)->counter), (old), (new))) -#define cmpxchg_local(ptr, o, n) \ - ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ - (unsigned long)(n), sizeof(*(ptr)))) - -#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) - static inline int __atomic_add_unless(atomic_t *v, int a, int u) { int c, old; diff --git a/include/asm-generic/cmpxchg.h b/include/asm-generic/cmpxchg.h index 1488302..811fb1e 100644 --- a/include/asm-generic/cmpxchg.h +++ b/include/asm-generic/cmpxchg.h @@ -92,6 +92,16 @@ unsigned long __xchg(unsigned long x, volatile void *ptr, int size) */ #include +#ifndef cmpxchg_local +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ + (unsigned long)(n), sizeof(*(ptr)))) +#endif + +#ifndef cmpxchg64_local +#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n)) +#endif + #define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n)) #define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n)) -- cgit v1.1 From 6af609515d788bd4c94116344f00601b058f75a6 Mon Sep 17 00:00:00 2001 From: Jonas Bonn Date: Mon, 4 Mar 2013 06:28:14 +0100 Subject: openrisc: remove HAVE_VIRT_TO_BUS The OpenRISC arch doesn't actually have the virt_to_bus methods Signed-off-by: Jonas Bonn --- arch/openrisc/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 804051a..9ab3bf2 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -12,7 +12,6 @@ config OPENRISC select ARCH_REQUIRE_GPIOLIB select HAVE_ARCH_TRACEHOOK select HAVE_GENERIC_HARDIRQS - select VIRT_TO_BUS select GENERIC_IRQ_CHIP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW -- cgit v1.1 From 810d601f07ce2481ff776e049c0733ded2abbcc1 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 18 Feb 2013 10:15:03 +0900 Subject: extcon: max8997: Check the pointer of platform data to protect null pointer error This patch check the pointer of platform data to protect kernel panic when platform data is not used and code clean. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- drivers/extcon/extcon-max8997.c | 56 +++++++++++++++++++++++++---------------- 1 file changed, 34 insertions(+), 22 deletions(-) diff --git a/drivers/extcon/extcon-max8997.c b/drivers/extcon/extcon-max8997.c index e636d95..69641bc 100644 --- a/drivers/extcon/extcon-max8997.c +++ b/drivers/extcon/extcon-max8997.c @@ -712,29 +712,45 @@ static int max8997_muic_probe(struct platform_device *pdev) goto err_irq; } - /* Initialize registers according to platform data */ if (pdata->muic_pdata) { - struct max8997_muic_platform_data *mdata = info->muic_pdata; - - for (i = 0; i < mdata->num_init_data; i++) { - max8997_write_reg(info->muic, mdata->init_data[i].addr, - mdata->init_data[i].data); + struct max8997_muic_platform_data *muic_pdata + = pdata->muic_pdata; + + /* Initialize registers according to platform data */ + for (i = 0; i < muic_pdata->num_init_data; i++) { + max8997_write_reg(info->muic, + muic_pdata->init_data[i].addr, + muic_pdata->init_data[i].data); } - } - /* - * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB - * h/w path of COMP2/COMN1 on CONTROL1 register. - */ - if (pdata->muic_pdata->path_uart) - info->path_uart = pdata->muic_pdata->path_uart; - else - info->path_uart = CONTROL1_SW_UART; + /* + * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB + * h/w path of COMP2/COMN1 on CONTROL1 register. + */ + if (muic_pdata->path_uart) + info->path_uart = muic_pdata->path_uart; + else + info->path_uart = CONTROL1_SW_UART; - if (pdata->muic_pdata->path_usb) - info->path_usb = pdata->muic_pdata->path_usb; - else + if (muic_pdata->path_usb) + info->path_usb = muic_pdata->path_usb; + else + info->path_usb = CONTROL1_SW_USB; + + /* + * Default delay time for detecting cable state + * after certain time. + */ + if (muic_pdata->detcable_delay_ms) + delay_jiffies = + msecs_to_jiffies(muic_pdata->detcable_delay_ms); + else + delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); + } else { + info->path_uart = CONTROL1_SW_UART; info->path_usb = CONTROL1_SW_USB; + delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); + } /* Set initial path for UART */ max8997_muic_set_path(info, info->path_uart, true); @@ -751,10 +767,6 @@ static int max8997_muic_probe(struct platform_device *pdev) * driver should notify cable state to upper layer. */ INIT_DELAYED_WORK(&info->wq_detcable, max8997_muic_detect_cable_wq); - if (pdata->muic_pdata->detcable_delay_ms) - delay_jiffies = msecs_to_jiffies(pdata->muic_pdata->detcable_delay_ms); - else - delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); schedule_delayed_work(&info->wq_detcable, delay_jiffies); return 0; -- cgit v1.1 From 190d7cfc8632c10bfbfe756f882b6d9cfddfdf6a Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Mon, 18 Feb 2013 10:03:32 +0900 Subject: extcon: max77693: Fix bug of wrong pointer when platform data is not used This patch fix wrong pointer of platform data. If each machine set platform data for h/w path or delay time of workqueue, this driver happen kernel panic related to null pointer. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- drivers/extcon/extcon-max77693.c | 90 +++++++++++++++++++++++----------------- 1 file changed, 52 insertions(+), 38 deletions(-) diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c index b70e381..fea1062 100644 --- a/drivers/extcon/extcon-max77693.c +++ b/drivers/extcon/extcon-max77693.c @@ -1045,7 +1045,6 @@ static int max77693_muic_probe(struct platform_device *pdev) { struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); - struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; struct max77693_muic_info *info; int delay_jiffies; int ret; @@ -1145,44 +1144,63 @@ static int max77693_muic_probe(struct platform_device *pdev) goto err_irq; } - /* Initialize MUIC register by using platform data */ - for (i = 0 ; i < muic_pdata->num_init_data ; i++) { - enum max77693_irq_source irq_src = MAX77693_IRQ_GROUP_NR; - - max77693_write_reg(info->max77693->regmap_muic, - muic_pdata->init_data[i].addr, - muic_pdata->init_data[i].data); - - switch (muic_pdata->init_data[i].addr) { - case MAX77693_MUIC_REG_INTMASK1: - irq_src = MUIC_INT1; - break; - case MAX77693_MUIC_REG_INTMASK2: - irq_src = MUIC_INT2; - break; - case MAX77693_MUIC_REG_INTMASK3: - irq_src = MUIC_INT3; - break; + if (pdata->muic_data) { + struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; + + /* Initialize MUIC register by using platform data */ + for (i = 0 ; i < muic_pdata->num_init_data ; i++) { + enum max77693_irq_source irq_src + = MAX77693_IRQ_GROUP_NR; + + max77693_write_reg(info->max77693->regmap_muic, + muic_pdata->init_data[i].addr, + muic_pdata->init_data[i].data); + + switch (muic_pdata->init_data[i].addr) { + case MAX77693_MUIC_REG_INTMASK1: + irq_src = MUIC_INT1; + break; + case MAX77693_MUIC_REG_INTMASK2: + irq_src = MUIC_INT2; + break; + case MAX77693_MUIC_REG_INTMASK3: + irq_src = MUIC_INT3; + break; + } + + if (irq_src < MAX77693_IRQ_GROUP_NR) + info->max77693->irq_masks_cur[irq_src] + = muic_pdata->init_data[i].data; } - if (irq_src < MAX77693_IRQ_GROUP_NR) - info->max77693->irq_masks_cur[irq_src] - = muic_pdata->init_data[i].data; - } + /* + * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB + * h/w path of COMP2/COMN1 on CONTROL1 register. + */ + if (muic_pdata->path_uart) + info->path_uart = muic_pdata->path_uart; + else + info->path_uart = CONTROL1_SW_UART; - /* - * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB - * h/w path of COMP2/COMN1 on CONTROL1 register. - */ - if (muic_pdata->path_uart) - info->path_uart = muic_pdata->path_uart; - else - info->path_uart = CONTROL1_SW_UART; + if (muic_pdata->path_usb) + info->path_usb = muic_pdata->path_usb; + else + info->path_usb = CONTROL1_SW_USB; - if (muic_pdata->path_usb) - info->path_usb = muic_pdata->path_usb; - else + /* + * Default delay time for detecting cable state + * after certain time. + */ + if (muic_pdata->detcable_delay_ms) + delay_jiffies = + msecs_to_jiffies(muic_pdata->detcable_delay_ms); + else + delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); + } else { info->path_usb = CONTROL1_SW_USB; + info->path_uart = CONTROL1_SW_UART; + delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); + } /* Set initial path for UART */ max77693_muic_set_path(info, info->path_uart, true); @@ -1208,10 +1226,6 @@ static int max77693_muic_probe(struct platform_device *pdev) * driver should notify cable state to upper layer. */ INIT_DELAYED_WORK(&info->wq_detcable, max77693_muic_detect_cable_wq); - if (muic_pdata->detcable_delay_ms) - delay_jiffies = msecs_to_jiffies(muic_pdata->detcable_delay_ms); - else - delay_jiffies = msecs_to_jiffies(DELAY_MS_DEFAULT); schedule_delayed_work(&info->wq_detcable, delay_jiffies); return ret; -- cgit v1.1 From 0ec83bd2460ed6aed0e7f29f9e0633b054621c02 Mon Sep 17 00:00:00 2001 From: Chanwoo Choi Date: Wed, 13 Mar 2013 17:38:57 +0900 Subject: extcon: max77693: Initialize register of MUIC device to bring up it without platform data This patch set default value of MUIC register to bring up MUIC device. If user don't set some initial value for MUIC device through platform data, extcon-max77693 driver use 'default_init_data' to bring up base operation of MAX77693 MUIC device. Signed-off-by: Chanwoo Choi Signed-off-by: Myungjoo Ham --- drivers/extcon/extcon-max77693.c | 93 ++++++++++++++++++++++++++---------- include/linux/mfd/max77693-private.h | 23 +++++++++ 2 files changed, 91 insertions(+), 25 deletions(-) diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c index fea1062..8f3c947 100644 --- a/drivers/extcon/extcon-max77693.c +++ b/drivers/extcon/extcon-max77693.c @@ -32,6 +32,38 @@ #define DEV_NAME "max77693-muic" #define DELAY_MS_DEFAULT 20000 /* unit: millisecond */ +/* + * Default value of MAX77693 register to bring up MUIC device. + * If user don't set some initial value for MUIC device through platform data, + * extcon-max77693 driver use 'default_init_data' to bring up base operation + * of MAX77693 MUIC device. + */ +struct max77693_reg_data default_init_data[] = { + { + /* STATUS2 - [3]ChgDetRun */ + .addr = MAX77693_MUIC_REG_STATUS2, + .data = STATUS2_CHGDETRUN_MASK, + }, { + /* INTMASK1 - Unmask [3]ADC1KM,[0]ADCM */ + .addr = MAX77693_MUIC_REG_INTMASK1, + .data = INTMASK1_ADC1K_MASK + | INTMASK1_ADC_MASK, + }, { + /* INTMASK2 - Unmask [0]ChgTypM */ + .addr = MAX77693_MUIC_REG_INTMASK2, + .data = INTMASK2_CHGTYP_MASK, + }, { + /* INTMASK3 - Mask all of interrupts */ + .addr = MAX77693_MUIC_REG_INTMASK3, + .data = 0x0, + }, { + /* CDETCTRL2 */ + .addr = MAX77693_MUIC_REG_CDETCTRL2, + .data = CDETCTRL2_VIDRMEN_MASK + | CDETCTRL2_DXOVPEN_MASK, + }, +}; + enum max77693_muic_adc_debounce_time { ADC_DEBOUNCE_TIME_5MS = 0, ADC_DEBOUNCE_TIME_10MS, @@ -1046,6 +1078,8 @@ static int max77693_muic_probe(struct platform_device *pdev) struct max77693_dev *max77693 = dev_get_drvdata(pdev->dev.parent); struct max77693_platform_data *pdata = dev_get_platdata(max77693->dev); struct max77693_muic_info *info; + struct max77693_reg_data *init_data; + int num_init_data; int delay_jiffies; int ret; int i; @@ -1144,35 +1178,44 @@ static int max77693_muic_probe(struct platform_device *pdev) goto err_irq; } + + /* Initialize MUIC register by using platform data or default data */ if (pdata->muic_data) { - struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; + init_data = pdata->muic_data->init_data; + num_init_data = pdata->muic_data->num_init_data; + } else { + init_data = default_init_data; + num_init_data = ARRAY_SIZE(default_init_data); + } + + for (i = 0 ; i < num_init_data ; i++) { + enum max77693_irq_source irq_src + = MAX77693_IRQ_GROUP_NR; - /* Initialize MUIC register by using platform data */ - for (i = 0 ; i < muic_pdata->num_init_data ; i++) { - enum max77693_irq_source irq_src - = MAX77693_IRQ_GROUP_NR; - - max77693_write_reg(info->max77693->regmap_muic, - muic_pdata->init_data[i].addr, - muic_pdata->init_data[i].data); - - switch (muic_pdata->init_data[i].addr) { - case MAX77693_MUIC_REG_INTMASK1: - irq_src = MUIC_INT1; - break; - case MAX77693_MUIC_REG_INTMASK2: - irq_src = MUIC_INT2; - break; - case MAX77693_MUIC_REG_INTMASK3: - irq_src = MUIC_INT3; - break; - } - - if (irq_src < MAX77693_IRQ_GROUP_NR) - info->max77693->irq_masks_cur[irq_src] - = muic_pdata->init_data[i].data; + max77693_write_reg(info->max77693->regmap_muic, + init_data[i].addr, + init_data[i].data); + + switch (init_data[i].addr) { + case MAX77693_MUIC_REG_INTMASK1: + irq_src = MUIC_INT1; + break; + case MAX77693_MUIC_REG_INTMASK2: + irq_src = MUIC_INT2; + break; + case MAX77693_MUIC_REG_INTMASK3: + irq_src = MUIC_INT3; + break; } + if (irq_src < MAX77693_IRQ_GROUP_NR) + info->max77693->irq_masks_cur[irq_src] + = init_data[i].data; + } + + if (pdata->muic_data) { + struct max77693_muic_platform_data *muic_pdata = pdata->muic_data; + /* * Default usb/uart path whether UART/USB or AUX_UART/AUX_USB * h/w path of COMP2/COMN1 on CONTROL1 register. diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h index 5b18ecd..1aa4f13 100644 --- a/include/linux/mfd/max77693-private.h +++ b/include/linux/mfd/max77693-private.h @@ -106,6 +106,29 @@ enum max77693_muic_reg { MAX77693_MUIC_REG_END, }; +/* MAX77693 INTMASK1~2 Register */ +#define INTMASK1_ADC1K_SHIFT 3 +#define INTMASK1_ADCERR_SHIFT 2 +#define INTMASK1_ADCLOW_SHIFT 1 +#define INTMASK1_ADC_SHIFT 0 +#define INTMASK1_ADC1K_MASK (1 << INTMASK1_ADC1K_SHIFT) +#define INTMASK1_ADCERR_MASK (1 << INTMASK1_ADCERR_SHIFT) +#define INTMASK1_ADCLOW_MASK (1 << INTMASK1_ADCLOW_SHIFT) +#define INTMASK1_ADC_MASK (1 << INTMASK1_ADC_SHIFT) + +#define INTMASK2_VIDRM_SHIFT 5 +#define INTMASK2_VBVOLT_SHIFT 4 +#define INTMASK2_DXOVP_SHIFT 3 +#define INTMASK2_DCDTMR_SHIFT 2 +#define INTMASK2_CHGDETRUN_SHIFT 1 +#define INTMASK2_CHGTYP_SHIFT 0 +#define INTMASK2_VIDRM_MASK (1 << INTMASK2_VIDRM_SHIFT) +#define INTMASK2_VBVOLT_MASK (1 << INTMASK2_VBVOLT_SHIFT) +#define INTMASK2_DXOVP_MASK (1 << INTMASK2_DXOVP_SHIFT) +#define INTMASK2_DCDTMR_MASK (1 << INTMASK2_DCDTMR_SHIFT) +#define INTMASK2_CHGDETRUN_MASK (1 << INTMASK2_CHGDETRUN_SHIFT) +#define INTMASK2_CHGTYP_MASK (1 << INTMASK2_CHGTYP_SHIFT) + /* MAX77693 MUIC - STATUS1~3 Register */ #define STATUS1_ADC_SHIFT (0) #define STATUS1_ADCLOW_SHIFT (5) -- cgit v1.1 From d35162f89b8f00537d7b240b76d2d0e8b8d29aa0 Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 12 Mar 2013 06:31:19 +0000 Subject: net: ethernet: cpsw: fix usage of cpdma_check_free_tx_desc() Commit fae50823d0 ("net: ethernet: davinci_cpdma: Add boundary for rx and tx descriptors") introduced a function to check the current allocation state of tx packets. The return value is taken into account to stop the netqork queue on the adapter in case there are no free slots. However, cpdma_check_free_tx_desc() returns 'true' if there is room in the bitmap, not 'false', so the usage of the function is wrong. Signed-off-by: Daniel Mack Cc: Mugunthan V N Reported-by: Sven Neumann Reported-by: Andreas Fenkart Tested-by: Mugunthan V N Acked-by: Mugunthan V N Tested-by: Andreas Fenkart Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 01ffbc4..75c4855 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -905,7 +905,7 @@ static netdev_tx_t cpsw_ndo_start_xmit(struct sk_buff *skb, /* If there is no more tx desc left free then we need to * tell the kernel to stop sending us tx frames. */ - if (unlikely(cpdma_check_free_tx_desc(priv->txch))) + if (unlikely(!cpdma_check_free_tx_desc(priv->txch))) netif_stop_queue(ndev); return NETDEV_TX_OK; -- cgit v1.1 From 876254ae2758d50dcb08c7bd00caf6a806571178 Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Tue, 12 Mar 2013 06:31:32 +0000 Subject: bonding: don't call update_speed_duplex() under spinlocks bond_update_speed_duplex() might sleep while calling underlying slave's routines. Move it out of atomic context in bond_enslave() and remove it from bond_miimon_commit() - it was introduced by commit 546add79, however when the slave interfaces go up/change state it's their responsibility to fire NETDEV_UP/NETDEV_CHANGE events so that bonding can properly update their speed. I've tested it on all combinations of ifup/ifdown, autoneg/speed/duplex changes, remote-controlled and local, on (not) MII-based cards. All changes are visible. Signed-off-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 8b4e96e..6bbd90e 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1746,6 +1746,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) bond_compute_features(bond); + bond_update_speed_duplex(new_slave); + read_lock(&bond->lock); new_slave->last_arp_rx = jiffies - @@ -1798,8 +1800,6 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev) new_slave->link == BOND_LINK_DOWN ? "DOWN" : (new_slave->link == BOND_LINK_UP ? "UP" : "BACK")); - bond_update_speed_duplex(new_slave); - if (USES_PRIMARY(bond->params.mode) && bond->params.primary[0]) { /* if there is a primary slave, remember it */ if (strcmp(bond->params.primary, new_slave->dev->name) == 0) { @@ -2374,8 +2374,6 @@ static void bond_miimon_commit(struct bonding *bond) bond_set_backup_slave(slave); } - bond_update_speed_duplex(slave); - pr_info("%s: link status definitely up for interface %s, %u Mbps %s duplex.\n", bond->dev->name, slave->dev->name, slave->speed, slave->duplex ? "full" : "half"); -- cgit v1.1 From f04feec2501774fe20fc7c77b5a16b9e23b36f95 Mon Sep 17 00:00:00 2001 From: Richard Genoud Date: Mon, 11 Mar 2013 15:12:39 +0100 Subject: ARM: at91: dt: at91sam9x5: correct NAND pins comments Comments on NAND pins where inverted. Signed-off-by: Richard Genoud Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index aa98e64..9b5d048 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -238,8 +238,8 @@ nand { pinctrl_nand: nand-0 { atmel,pins = - <3 4 0x0 0x1 /* PD5 gpio RDY pin pull_up */ - 3 5 0x0 0x1>; /* PD4 gpio enable pin pull_up */ + <3 4 0x0 0x1 /* PD4 gpio Chip Enable pin pull_up */ + 3 5 0x0 0x1>; /* PD5 gpio RDY/BUSY pin pull_up */ }; }; -- cgit v1.1 From 7f06472f1c3281abceea36059f94e099bfe4698f Mon Sep 17 00:00:00 2001 From: Richard Genoud Date: Mon, 11 Mar 2013 15:12:40 +0100 Subject: ARM: at91: dt: at91sam9x5: complete NAND pinctrl There was only chip enable and readdy/busy pins for the nand controller. This add the rest of the pins. pinctrl_nand_16bits contains the specific muxes for 16 bits NANDs. Signed-off-by: Richard Genoud Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/at91sam9x5.dtsi | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index 9b5d048..a98c0d5 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -238,8 +238,32 @@ nand { pinctrl_nand: nand-0 { atmel,pins = - <3 4 0x0 0x1 /* PD4 gpio Chip Enable pin pull_up */ - 3 5 0x0 0x1>; /* PD5 gpio RDY/BUSY pin pull_up */ + <3 0 0x1 0x0 /* PD0 periph A Read Enable */ + 3 1 0x1 0x0 /* PD1 periph A Write Enable */ + 3 2 0x1 0x0 /* PD2 periph A Address Latch Enable */ + 3 3 0x1 0x0 /* PD3 periph A Command Latch Enable */ + 3 4 0x0 0x1 /* PD4 gpio Chip Enable pin pull_up */ + 3 5 0x0 0x1 /* PD5 gpio RDY/BUSY pin pull_up */ + 3 6 0x1 0x0 /* PD6 periph A Data bit 0 */ + 3 7 0x1 0x0 /* PD7 periph A Data bit 1 */ + 3 8 0x1 0x0 /* PD8 periph A Data bit 2 */ + 3 9 0x1 0x0 /* PD9 periph A Data bit 3 */ + 3 10 0x1 0x0 /* PD10 periph A Data bit 4 */ + 3 11 0x1 0x0 /* PD11 periph A Data bit 5 */ + 3 12 0x1 0x0 /* PD12 periph A Data bit 6 */ + 3 13 0x1 0x0>; /* PD13 periph A Data bit 7 */ + }; + + pinctrl_nand_16bits: nand_16bits-0 { + atmel,pins = + <3 14 0x1 0x0 /* PD14 periph A Data bit 8 */ + 3 15 0x1 0x0 /* PD15 periph A Data bit 9 */ + 3 16 0x1 0x0 /* PD16 periph A Data bit 10 */ + 3 17 0x1 0x0 /* PD17 periph A Data bit 11 */ + 3 18 0x1 0x0 /* PD18 periph A Data bit 12 */ + 3 19 0x1 0x0 /* PD19 periph A Data bit 13 */ + 3 20 0x1 0x0 /* PD20 periph A Data bit 14 */ + 3 21 0x1 0x0>; /* PD21 periph A Data bit 15 */ }; }; -- cgit v1.1 From a79eac7165ed62114e6ca197195aa5060a54f137 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 5 Feb 2013 14:35:11 +0100 Subject: atmel_lcdfb: fix 16-bpp modes on older SOCs Fix regression introduced by commit 787f9fd23283 ("atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes") which broke 16-bpp modes for older SOCs which use IBGR:555 (msb is intensity) rather than BGR:565. Use SOC-type to determine the pixel layout. Tested on at91sam9263 and at91sam9g45. Cc: Acked-by: Peter Korsgaard Signed-off-by: Johan Hovold Signed-off-by: Nicolas Ferre --- drivers/video/atmel_lcdfb.c | 22 +++++++++++++++------- include/video/atmel_lcdc.h | 1 + 2 files changed, 16 insertions(+), 7 deletions(-) diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c index 12cf5f3..025428e 100644 --- a/drivers/video/atmel_lcdfb.c +++ b/drivers/video/atmel_lcdfb.c @@ -422,17 +422,22 @@ static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var, = var->bits_per_pixel; break; case 16: + /* Older SOCs use IBGR:555 rather than BGR:565. */ + if (sinfo->have_intensity_bit) + var->green.length = 5; + else + var->green.length = 6; + if (sinfo->lcd_wiring_mode == ATMEL_LCDC_WIRING_RGB) { - /* RGB:565 mode */ - var->red.offset = 11; + /* RGB:5X5 mode */ + var->red.offset = var->green.length + 5; var->blue.offset = 0; } else { - /* BGR:565 mode */ + /* BGR:5X5 mode */ var->red.offset = 0; - var->blue.offset = 11; + var->blue.offset = var->green.length + 5; } var->green.offset = 5; - var->green.length = 6; var->red.length = var->blue.length = 5; break; case 32: @@ -679,8 +684,7 @@ static int atmel_lcdfb_setcolreg(unsigned int regno, unsigned int red, case FB_VISUAL_PSEUDOCOLOR: if (regno < 256) { - if (cpu_is_at91sam9261() || cpu_is_at91sam9263() - || cpu_is_at91sam9rl()) { + if (sinfo->have_intensity_bit) { /* old style I+BGR:555 */ val = ((red >> 11) & 0x001f); val |= ((green >> 6) & 0x03e0); @@ -870,6 +874,10 @@ static int __init atmel_lcdfb_probe(struct platform_device *pdev) } sinfo->info = info; sinfo->pdev = pdev; + if (cpu_is_at91sam9261() || cpu_is_at91sam9263() || + cpu_is_at91sam9rl()) { + sinfo->have_intensity_bit = true; + } strcpy(info->fix.id, sinfo->pdev->name); info->flags = ATMEL_LCDFB_FBINFO_DEFAULT; diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h index 28447f1..5f0e234 100644 --- a/include/video/atmel_lcdc.h +++ b/include/video/atmel_lcdc.h @@ -62,6 +62,7 @@ struct atmel_lcdfb_info { void (*atmel_lcdfb_power_control)(int on); struct fb_monspecs *default_monspecs; u32 pseudo_palette[16]; + bool have_intensity_bit; }; #define ATMEL_LCDC_DMABADDR1 0x00 -- cgit v1.1 From 67cf9c0a00bd88443adb7d6c3efa8b18d03f97c5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 13 Mar 2013 10:56:13 +0100 Subject: ARM: at91: fix LCD-wiring mode Fix regression introduced by commit 787f9fd23283 ("atmel_lcdfb: support 16bit BGR:565 mode, remove unsupported 15bit modes") which broke 16-bpp modes for older SOCs which use IBGR:555 (msb is intensity) rather than BGR:565. The above commit removes the RGB:555-wiring hack by removing the no longer used ATMEL_LCDC_WIRING_RGB555 define. Acked-by: Peter Korsgaard Signed-off-by: Johan Hovold Signed-off-by: Nicolas Ferre --- include/video/atmel_lcdc.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/video/atmel_lcdc.h b/include/video/atmel_lcdc.h index 5f0e234..8deb226 100644 --- a/include/video/atmel_lcdc.h +++ b/include/video/atmel_lcdc.h @@ -30,7 +30,6 @@ */ #define ATMEL_LCDC_WIRING_BGR 0 #define ATMEL_LCDC_WIRING_RGB 1 -#define ATMEL_LCDC_WIRING_RGB555 2 /* LCD Controller info data structure, stored in device platform_data */ -- cgit v1.1 From 7c6cdead7cc9a99650d15497aae47d7472217eb1 Mon Sep 17 00:00:00 2001 From: Nithin Sujir Date: Tue, 12 Mar 2013 15:32:48 +0000 Subject: tg3: 5715 does not link up when autoneg off Commit d13ba512cbba7de5d55d7a3b2aae7d83c8921457 ("tg3: Remove SPEED_UNKNOWN checks") cleaned up the autoneg advertisement by removing some dead code. One effect of this change was that the advertisement register would not be updated if autoneg is turned off. This exposed a bug on the 5715 device w.r.t linking. The 5715 defaults to advertise only 10Mb Full duplex. But with autoneg disabled, it needs the configured speed enabled in the advertisement register to link up. This patch adds the work around to advertise all speeds on the 5715 when autoneg is disabled. Reported-by: Marcin Miotk Reviewed-by: Benjamin Li Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 93729f9..67d2663 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -4130,6 +4130,14 @@ static void tg3_phy_copper_begin(struct tg3 *tp) tp->link_config.active_speed = tp->link_config.speed; tp->link_config.active_duplex = tp->link_config.duplex; + if (tg3_asic_rev(tp) == ASIC_REV_5714) { + /* With autoneg disabled, 5715 only links up when the + * advertisement register has the configured speed + * enabled. + */ + tg3_writephy(tp, MII_ADVERTISE, ADVERTISE_ALL); + } + bmcr = 0; switch (tp->link_config.speed) { default: -- cgit v1.1 From f2815633504b442ca0b0605c16bf3d88a3a0fcea Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Tue, 12 Mar 2013 15:53:23 +0000 Subject: sctp: Use correct sideffect command in duplicate cookie handling When SCTP is done processing a duplicate cookie chunk, it tries to delete a newly created association. For that, it has to set the right association for the side-effect processing to work. However, when it uses the SCTP_CMD_NEW_ASOC command, that performs more work then really needed (like hashing the associationa and assigning it an id) and there is no point to do that only to delete the association as a next step. In fact, it also creates an impossible condition where an association may be found by the getsockopt() call, and that association is empty. This causes a crash in some sctp getsockopts. The solution is rather simple. We simply use SCTP_CMD_SET_ASOC command that doesn't have all the overhead and does exactly what we need. Reported-by: Karl Heiss Tested-by: Karl Heiss CC: Neil Horman Signed-off-by: Vlad Yasevich Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/sctp/sm_statefuns.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 5131fcf..de1a013 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -2082,7 +2082,7 @@ sctp_disposition_t sctp_sf_do_5_2_4_dupcook(struct net *net, } /* Delete the tempory new association. */ - sctp_add_cmd_sf(commands, SCTP_CMD_NEW_ASOC, SCTP_ASOC(new_asoc)); + sctp_add_cmd_sf(commands, SCTP_CMD_SET_ASOC, SCTP_ASOC(new_asoc)); sctp_add_cmd_sf(commands, SCTP_CMD_DELETE_TCB, SCTP_NULL()); /* Restore association pointer to provide SCTP command interpeter -- cgit v1.1 From 2317f449af30073cfa6ec8352e4a65a89e357bdd Mon Sep 17 00:00:00 2001 From: Xufeng Zhang Date: Thu, 7 Mar 2013 21:39:37 +0000 Subject: sctp: don't break the loop while meeting the active_path so as to find the matched transport sctp_assoc_lookup_tsn() function searchs which transport a certain TSN was sent on, if not found in the active_path transport, then go search all the other transports in the peer's transport_addr_list, however, we should continue to the next entry rather than break the loop when meet the active_path transport. Signed-off-by: Xufeng Zhang Acked-by: Neil Horman Acked-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/sctp/associola.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/sctp/associola.c b/net/sctp/associola.c index 43cd0dd..d2709e2 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -1079,7 +1079,7 @@ struct sctp_transport *sctp_assoc_lookup_tsn(struct sctp_association *asoc, transports) { if (transport == active) - break; + continue; list_for_each_entry(chunk, &transport->transmitted, transmitted_list) { if (key == chunk->subh.data_hdr->tsn) { -- cgit v1.1 From c288d2969627be7ffc90904ac8c6aae0295fbf9f Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Wed, 13 Mar 2013 12:57:08 +0100 Subject: ext2: Fix BUG_ON in evict() on inode deletion Commit 8e3dffc6 introduced a regression where deleting inode with large extended attributes leads to triggering BUG_ON(inode->i_state != (I_FREEING | I_CLEAR)) in fs/inode.c:evict(). That happens because freeing of xattr block dirtied the inode and it happened after clear_inode() has been called. Fix the issue by moving removal of xattr block into ext2_evict_inode() before clear_inode() call close to a place where data blocks are truncated. That is also more logical place and removes surprising requirement that ext2_free_blocks() mustn't dirty the inode. Reported-by: Tyler Hicks Signed-off-by: Jan Kara --- fs/ext2/ialloc.c | 1 - fs/ext2/inode.c | 2 ++ 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c index 8f370e01..7cadd82 100644 --- a/fs/ext2/ialloc.c +++ b/fs/ext2/ialloc.c @@ -118,7 +118,6 @@ void ext2_free_inode (struct inode * inode) * as writing the quota to disk may need the lock as well. */ /* Quota is already initialized in iput() */ - ext2_xattr_delete_inode(inode); dquot_free_inode(inode); dquot_drop(inode); diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index c3881e5..fe60cc1 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -34,6 +34,7 @@ #include "ext2.h" #include "acl.h" #include "xip.h" +#include "xattr.h" static int __ext2_write_inode(struct inode *inode, int do_sync); @@ -88,6 +89,7 @@ void ext2_evict_inode(struct inode * inode) inode->i_size = 0; if (inode->i_blocks) ext2_truncate_blocks(inode, 0); + ext2_xattr_delete_inode(inode); } invalidate_inode_buffers(inode); -- cgit v1.1 From 5b9e12dbf92b441b37136ea71dac59f05f2673a9 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Wed, 13 Mar 2013 00:24:15 +0000 Subject: ipv4: fix definition of FIB_TABLE_HASHSZ a long time ago by the commit commit 93456b6d7753def8760b423ac6b986eb9d5a4a95 Author: Denis V. Lunev Date: Thu Jan 10 03:23:38 2008 -0800 [IPV4]: Unify access to the routing tables. the defenition of FIB_HASH_TABLE size has obtained wrong dependency: it should depend upon CONFIG_IP_MULTIPLE_TABLES (as was in the original code) but it was depended from CONFIG_IP_ROUTE_MULTIPATH This patch returns the situation to the original state. The problem was spotted by Tingwei Liu. Signed-off-by: Denis V. Lunev CC: Tingwei Liu CC: Alexey Kuznetsov Signed-off-by: David S. Miller --- include/net/ip_fib.h | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h index 9497be1..e49db91 100644 --- a/include/net/ip_fib.h +++ b/include/net/ip_fib.h @@ -152,18 +152,16 @@ struct fib_result_nl { }; #ifdef CONFIG_IP_ROUTE_MULTIPATH - #define FIB_RES_NH(res) ((res).fi->fib_nh[(res).nh_sel]) - -#define FIB_TABLE_HASHSZ 2 - #else /* CONFIG_IP_ROUTE_MULTIPATH */ - #define FIB_RES_NH(res) ((res).fi->fib_nh[0]) +#endif /* CONFIG_IP_ROUTE_MULTIPATH */ +#ifdef CONFIG_IP_MULTIPLE_TABLES #define FIB_TABLE_HASHSZ 256 - -#endif /* CONFIG_IP_ROUTE_MULTIPATH */ +#else +#define FIB_TABLE_HASHSZ 2 +#endif extern __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh); -- cgit v1.1 From b701f16dd490d3f346724050f17d60beda094998 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Wed, 13 Mar 2013 02:25:17 +0000 Subject: net: qmi_wwan: set correct altsetting for Gobi 1K devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit bd877e4 ("net: qmi_wwan: use a single bind function for all device types") made Gobi 1K devices fail probing. Using the number of endpoints in the default altsetting to decide whether the function use one or two interfaces is wrong. Other altsettings may provide more endpoints. With Gobi 1K devices, USB interface #3's altsetting is 0 by default, but altsetting 0 only provides one interrupt endpoint and is not sufficent for QMI. Altsetting 1 provides all 3 endpoints required for qmi_wwan and works with QMI. Gobi 1K layout for intf#3 is: Interface Descriptor: 255/255/255 bInterfaceNumber 3 bAlternateSetting 0 Endpoint Descriptor: Interrupt IN Interface Descriptor: 255/255/255 bInterfaceNumber 3 bAlternateSetting 1 Endpoint Descriptor: Interrupt IN Endpoint Descriptor: Bulk IN Endpoint Descriptor: Bulk OUT Prior to commit bd877e4, we would call usbnet_get_endpoints before giving up finding enough endpoints. Removing the early endpoint number test and the strict functional descriptor requirement allow qmi_wwan_bind to continue until usbnet_get_endpoints has made the final attempt to collect endpoints. This restores the behaviour from before commit bd877e4 without losing the added benefit of using a single bind function. The driver has always required a CDC Union functional descriptor for two-interface functions. Using the existence of this descriptor to detect two-interface functions is the logically correct method. Reported-by: Dan Williams Signed-off-by: Bjørn Mork Tested-by: Dan Williams Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 49 +++++++++++++++------------------------------- 1 file changed, 16 insertions(+), 33 deletions(-) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index efb5c7c..968d5d5 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -139,16 +139,9 @@ static int qmi_wwan_bind(struct usbnet *dev, struct usb_interface *intf) BUILD_BUG_ON((sizeof(((struct usbnet *)0)->data) < sizeof(struct qmi_wwan_state))); - /* control and data is shared? */ - if (intf->cur_altsetting->desc.bNumEndpoints == 3) { - info->control = intf; - info->data = intf; - goto shared; - } - - /* else require a single interrupt status endpoint on control intf */ - if (intf->cur_altsetting->desc.bNumEndpoints != 1) - goto err; + /* set up initial state */ + info->control = intf; + info->data = intf; /* and a number of CDC descriptors */ while (len > 3) { @@ -207,25 +200,14 @@ next_desc: buf += h->bLength; } - /* did we find all the required ones? */ - if (!(found & (1 << USB_CDC_HEADER_TYPE)) || - !(found & (1 << USB_CDC_UNION_TYPE))) { - dev_err(&intf->dev, "CDC functional descriptors missing\n"); - goto err; - } - - /* verify CDC Union */ - if (desc->bInterfaceNumber != cdc_union->bMasterInterface0) { - dev_err(&intf->dev, "bogus CDC Union: master=%u\n", cdc_union->bMasterInterface0); - goto err; - } - - /* need to save these for unbind */ - info->control = intf; - info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0); - if (!info->data) { - dev_err(&intf->dev, "bogus CDC Union: slave=%u\n", cdc_union->bSlaveInterface0); - goto err; + /* Use separate control and data interfaces if we found a CDC Union */ + if (cdc_union) { + info->data = usb_ifnum_to_if(dev->udev, cdc_union->bSlaveInterface0); + if (desc->bInterfaceNumber != cdc_union->bMasterInterface0 || !info->data) { + dev_err(&intf->dev, "bogus CDC Union: master=%u, slave=%u\n", + cdc_union->bMasterInterface0, cdc_union->bSlaveInterface0); + goto err; + } } /* errors aren't fatal - we can live with the dynamic address */ @@ -235,11 +217,12 @@ next_desc: } /* claim data interface and set it up */ - status = usb_driver_claim_interface(driver, info->data, dev); - if (status < 0) - goto err; + if (info->control != info->data) { + status = usb_driver_claim_interface(driver, info->data, dev); + if (status < 0) + goto err; + } -shared: status = qmi_wwan_register_subdriver(dev); if (status < 0 && info->control != info->data) { usb_set_intfdata(info->data, NULL); -- cgit v1.1 From 3f8bc5e4da29c7e05edeca6b475abb4fb01a5a13 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 13 Mar 2013 09:58:18 -0500 Subject: qcserial: bind to DM/DIAG port on Gobi 1K devices Turns out we just need altsetting 1 and then we can talk to it. Signed-off-by: Dan Williams Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/qcserial.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/qcserial.c b/drivers/usb/serial/qcserial.c index 2466254..59b32b7 100644 --- a/drivers/usb/serial/qcserial.c +++ b/drivers/usb/serial/qcserial.c @@ -197,12 +197,15 @@ static int qcprobe(struct usb_serial *serial, const struct usb_device_id *id) if (is_gobi1k) { /* Gobi 1K USB layout: - * 0: serial port (doesn't respond) + * 0: DM/DIAG (use libqcdm from ModemManager for communication) * 1: serial port (doesn't respond) * 2: AT-capable modem port * 3: QMI/net */ - if (ifnum == 2) + if (ifnum == 0) { + dev_dbg(dev, "Gobi 1K DM/DIAG interface found\n"); + altsetting = 1; + } else if (ifnum == 2) dev_dbg(dev, "Modem port found\n"); else altsetting = -1; -- cgit v1.1 From 6a40cdd5440d7b61a349bc04e85eed4fa7c24a3c Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Tue, 5 Mar 2013 14:58:53 +0800 Subject: pinctrl: abx500: Fix checking if pin use AlternateFunction register It's pointless to check "af.alt_bit1 == UNUSED" twice. This looks like a copy-paste bug, I think what we want is to check if *both* af.alt_bit1 and af.alt_bit2 are UNUSED. Signed-off-by: Axel Lin Acked-by: Patrice Chotard Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-abx500.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinctrl-abx500.c b/drivers/pinctrl/pinctrl-abx500.c index caecdd3..c542a97 100644 --- a/drivers/pinctrl/pinctrl-abx500.c +++ b/drivers/pinctrl/pinctrl-abx500.c @@ -422,7 +422,7 @@ static u8 abx500_get_mode(struct pinctrl_dev *pctldev, struct gpio_chip *chip, } /* check if pin use AlternateFunction register */ - if ((af.alt_bit1 == UNUSED) && (af.alt_bit1 == UNUSED)) + if ((af.alt_bit1 == UNUSED) && (af.alt_bit2 == UNUSED)) return mode; /* * if pin GPIOSEL bit is set and pin supports alternate function, -- cgit v1.1 From 53ded8191e81507da0786ac45152eebb68d25d0c Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 13 Mar 2013 03:18:18 +0100 Subject: pinctrl: Print the correct information in debugfs pinconf-state file A bad copy&paste resulted in the debugfs pinconf-state file printing the pin name instead of the state name. Fix it. Signed-off-by: Laurent Pinchart Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c index ac8d382..d611ecf 100644 --- a/drivers/pinctrl/pinconf.c +++ b/drivers/pinctrl/pinconf.c @@ -622,7 +622,7 @@ static const struct file_operations pinconf_dbg_pinname_fops = { static int pinconf_dbg_state_print(struct seq_file *s, void *d) { if (strlen(dbg_state_name)) - seq_printf(s, "%s\n", dbg_pinname); + seq_printf(s, "%s\n", dbg_state_name); else seq_printf(s, "No pin state set\n"); return 0; -- cgit v1.1 From 5818a46a999ad9546e68e8765a3ca1d9d87f9b4a Mon Sep 17 00:00:00 2001 From: John Crispin Date: Wed, 13 Mar 2013 13:20:15 +0100 Subject: rt2x00: fix rt2x00 to work with the new ralink SoC config symbols Since v3.9-rc1 the kernel has basic support for Ralink WiSoC. The config symbols are named slightly different than before. Fix the rt2x00 to match the new symbols. The commit causing this breakage is: commit ae2b5bb6570481b50a7175c64176b82da0a81836 Author: John Crispin Date: Sun Jan 20 22:05:30 2013 +0100 MIPS: ralink: adds Kbuild files Signed-off-by: John Crispin Acked-by: Gertjan van Wingerde Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/Kconfig | 4 ++-- drivers/net/wireless/rt2x00/rt2800pci.c | 14 +++++++------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig index 44d6ead..2bf4efa 100644 --- a/drivers/net/wireless/rt2x00/Kconfig +++ b/drivers/net/wireless/rt2x00/Kconfig @@ -55,10 +55,10 @@ config RT61PCI config RT2800PCI tristate "Ralink rt27xx/rt28xx/rt30xx (PCI/PCIe/PCMCIA) support" - depends on PCI || RALINK_RT288X || RALINK_RT305X + depends on PCI || SOC_RT288X || SOC_RT305X select RT2800_LIB select RT2X00_LIB_PCI if PCI - select RT2X00_LIB_SOC if RALINK_RT288X || RALINK_RT305X + select RT2X00_LIB_SOC if SOC_RT288X || SOC_RT305X select RT2X00_LIB_FIRMWARE select RT2X00_LIB_CRYPTO select CRC_CCITT diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index 48a01aa..ded73da 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -89,7 +89,7 @@ static void rt2800pci_mcu_status(struct rt2x00_dev *rt2x00dev, const u8 token) rt2x00pci_register_write(rt2x00dev, H2M_MAILBOX_CID, ~0); } -#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X) +#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X) static int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev) { void __iomem *base_addr = ioremap(0x1F040000, EEPROM_SIZE); @@ -107,7 +107,7 @@ static inline int rt2800pci_read_eeprom_soc(struct rt2x00_dev *rt2x00dev) { return -ENOMEM; } -#endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT305X */ +#endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */ #ifdef CONFIG_PCI static void rt2800pci_eepromregister_read(struct eeprom_93cx6 *eeprom) @@ -1177,7 +1177,7 @@ MODULE_DEVICE_TABLE(pci, rt2800pci_device_table); #endif /* CONFIG_PCI */ MODULE_LICENSE("GPL"); -#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X) +#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X) static int rt2800soc_probe(struct platform_device *pdev) { return rt2x00soc_probe(pdev, &rt2800pci_ops); @@ -1194,7 +1194,7 @@ static struct platform_driver rt2800soc_driver = { .suspend = rt2x00soc_suspend, .resume = rt2x00soc_resume, }; -#endif /* CONFIG_RALINK_RT288X || CONFIG_RALINK_RT305X */ +#endif /* CONFIG_SOC_RT288X || CONFIG_SOC_RT305X */ #ifdef CONFIG_PCI static int rt2800pci_probe(struct pci_dev *pci_dev, @@ -1217,7 +1217,7 @@ static int __init rt2800pci_init(void) { int ret = 0; -#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X) +#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X) ret = platform_driver_register(&rt2800soc_driver); if (ret) return ret; @@ -1225,7 +1225,7 @@ static int __init rt2800pci_init(void) #ifdef CONFIG_PCI ret = pci_register_driver(&rt2800pci_driver); if (ret) { -#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X) +#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X) platform_driver_unregister(&rt2800soc_driver); #endif return ret; @@ -1240,7 +1240,7 @@ static void __exit rt2800pci_exit(void) #ifdef CONFIG_PCI pci_unregister_driver(&rt2800pci_driver); #endif -#if defined(CONFIG_RALINK_RT288X) || defined(CONFIG_RALINK_RT305X) +#if defined(CONFIG_SOC_RT288X) || defined(CONFIG_SOC_RT305X) platform_driver_unregister(&rt2800soc_driver); #endif } -- cgit v1.1 From 9437a248e7cac427c898bdb11bd1ac6844a1ead4 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Wed, 13 Mar 2013 10:28:13 -0500 Subject: rtlwifi: rtl8192cu: Fix problem that prevents reassociation The driver was failing to clear the BSSID when a disconnect happened. That prevented a reconnection. This problem is reported at https://bugzilla.redhat.com/show_bug.cgi?id=789605, https://bugzilla.redhat.com/show_bug.cgi?id=866786, https://bugzilla.redhat.com/show_bug.cgi?id=906734, and https://bugzilla.kernel.org/show_bug.cgi?id=46171. Thanks to Jussi Kivilinna for making the critical observation that led to the solution. Reported-by: Jussi Kivilinna Tested-by: Jussi Kivilinna Tested-by: Alessandro Lannocca Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/rtl8192cu/hw.c | 87 ++++++++++++----------------- 1 file changed, 35 insertions(+), 52 deletions(-) diff --git a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c index 3c6e18c..c08d0f4 100644 --- a/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c +++ b/drivers/net/wireless/rtlwifi/rtl8192cu/hw.c @@ -1377,74 +1377,57 @@ void rtl92cu_card_disable(struct ieee80211_hw *hw) void rtl92cu_set_check_bssid(struct ieee80211_hw *hw, bool check_bssid) { - /* dummy routine needed for callback from rtl_op_configure_filter() */ -} - -/*========================================================================== */ - -static void _rtl92cu_set_check_bssid(struct ieee80211_hw *hw, - enum nl80211_iftype type) -{ struct rtl_priv *rtlpriv = rtl_priv(hw); - u32 reg_rcr = rtl_read_dword(rtlpriv, REG_RCR); struct rtl_hal *rtlhal = rtl_hal(rtlpriv); - struct rtl_phy *rtlphy = &(rtlpriv->phy); - u8 filterout_non_associated_bssid = false; + u32 reg_rcr = rtl_read_dword(rtlpriv, REG_RCR); - switch (type) { - case NL80211_IFTYPE_ADHOC: - case NL80211_IFTYPE_STATION: - filterout_non_associated_bssid = true; - break; - case NL80211_IFTYPE_UNSPECIFIED: - case NL80211_IFTYPE_AP: - default: - break; - } - if (filterout_non_associated_bssid) { + if (rtlpriv->psc.rfpwr_state != ERFON) + return; + + if (check_bssid) { + u8 tmp; if (IS_NORMAL_CHIP(rtlhal->version)) { - switch (rtlphy->current_io_type) { - case IO_CMD_RESUME_DM_BY_SCAN: - reg_rcr |= (RCR_CBSSID_DATA | RCR_CBSSID_BCN); - rtlpriv->cfg->ops->set_hw_reg(hw, - HW_VAR_RCR, (u8 *)(®_rcr)); - /* enable update TSF */ - _rtl92cu_set_bcn_ctrl_reg(hw, 0, BIT(4)); - break; - case IO_CMD_PAUSE_DM_BY_SCAN: - reg_rcr &= ~(RCR_CBSSID_DATA | RCR_CBSSID_BCN); - rtlpriv->cfg->ops->set_hw_reg(hw, - HW_VAR_RCR, (u8 *)(®_rcr)); - /* disable update TSF */ - _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0); - break; - } + reg_rcr |= (RCR_CBSSID_DATA | RCR_CBSSID_BCN); + tmp = BIT(4); } else { - reg_rcr |= (RCR_CBSSID); - rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, - (u8 *)(®_rcr)); - _rtl92cu_set_bcn_ctrl_reg(hw, 0, (BIT(4)|BIT(5))); + reg_rcr |= RCR_CBSSID; + tmp = BIT(4) | BIT(5); } - } else if (filterout_non_associated_bssid == false) { + rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, + (u8 *) (®_rcr)); + _rtl92cu_set_bcn_ctrl_reg(hw, 0, tmp); + } else { + u8 tmp; if (IS_NORMAL_CHIP(rtlhal->version)) { - reg_rcr &= (~(RCR_CBSSID_DATA | RCR_CBSSID_BCN)); - rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, - (u8 *)(®_rcr)); - _rtl92cu_set_bcn_ctrl_reg(hw, BIT(4), 0); + reg_rcr &= ~(RCR_CBSSID_DATA | RCR_CBSSID_BCN); + tmp = BIT(4); } else { - reg_rcr &= (~RCR_CBSSID); - rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_RCR, - (u8 *)(®_rcr)); - _rtl92cu_set_bcn_ctrl_reg(hw, (BIT(4)|BIT(5)), 0); + reg_rcr &= ~RCR_CBSSID; + tmp = BIT(4) | BIT(5); } + reg_rcr &= (~(RCR_CBSSID_DATA | RCR_CBSSID_BCN)); + rtlpriv->cfg->ops->set_hw_reg(hw, + HW_VAR_RCR, (u8 *) (®_rcr)); + _rtl92cu_set_bcn_ctrl_reg(hw, tmp, 0); } } +/*========================================================================== */ + int rtl92cu_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type) { + struct rtl_priv *rtlpriv = rtl_priv(hw); + if (_rtl92cu_set_media_status(hw, type)) return -EOPNOTSUPP; - _rtl92cu_set_check_bssid(hw, type); + + if (rtlpriv->mac80211.link_state == MAC80211_LINKED) { + if (type != NL80211_IFTYPE_AP) + rtl92cu_set_check_bssid(hw, true); + } else { + rtl92cu_set_check_bssid(hw, false); + } + return 0; } -- cgit v1.1 From bf4d7be57ba9040347065f48a60f895a254f6e28 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Wed, 13 Mar 2013 17:13:46 +0530 Subject: pinctrl: generic: Fix compilation error The function definition of pinconf_generic_dump_config is defined under CONFIG_DEBUG_FS macro. Define the declaration too under this macro. Without this patch we get the following build error: drivers/built-in.o: In function `pcs_pinconf_config_dbg_show': drivers/pinctrl/pinctrl-single.c:726: undefined reference to `pinconf_generic_dump_config' Signed-off-by: Sachin Kamat Signed-off-by: Linus Walleij --- drivers/pinctrl/pinconf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/pinconf.h b/drivers/pinctrl/pinconf.h index e3ed8cb..bfda73d 100644 --- a/drivers/pinctrl/pinconf.h +++ b/drivers/pinctrl/pinconf.h @@ -90,7 +90,7 @@ static inline void pinconf_init_device_debugfs(struct dentry *devroot, * pin config. */ -#ifdef CONFIG_GENERIC_PINCONF +#if defined(CONFIG_GENERIC_PINCONF) && defined(CONFIG_DEBUG_FS) void pinconf_generic_dump_pin(struct pinctrl_dev *pctldev, struct seq_file *s, unsigned pin); -- cgit v1.1 From 47c78f4a70d791ff44cab3254b489605a52e3181 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Mon, 11 Mar 2013 13:08:49 +0000 Subject: cifs: map NT_STATUS_SHARING_VIOLATION to EBUSY instead of ETXTBSY NT_SHARING_VIOLATION errors are mapped to ETXTBSY which is unexpected for operations such as unlink where we can hit these errors. The patch maps the error NT_SHARING_VIOLATION to EBUSY instead. The patch also replaces all instances of ETXTBSY in cifs_rename_pending_delete() with EBUSY. Signed-off-by: Sachin Prabhu Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/inode.c | 10 ++++------ fs/cifs/netmisc.c | 2 +- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 0079696..20887bf 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1043,7 +1043,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR); if (rc != 0) { - rc = -ETXTBSY; + rc = -EBUSY; goto undo_setattr; } @@ -1062,7 +1062,7 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry, if (rc == -ENOENT) rc = 0; else if (rc != 0) { - rc = -ETXTBSY; + rc = -EBUSY; goto undo_rename; } cifsInode->delete_pending = true; @@ -1169,15 +1169,13 @@ psx_del_no_retry: cifs_drop_nlink(inode); } else if (rc == -ENOENT) { d_drop(dentry); - } else if (rc == -ETXTBSY) { + } else if (rc == -EBUSY) { if (server->ops->rename_pending_delete) { rc = server->ops->rename_pending_delete(full_path, dentry, xid); if (rc == 0) cifs_drop_nlink(inode); } - if (rc == -ETXTBSY) - rc = -EBUSY; } else if ((rc == -EACCES) && (dosattr == 0) && inode) { attrs = kzalloc(sizeof(*attrs), GFP_KERNEL); if (attrs == NULL) { @@ -1518,7 +1516,7 @@ cifs_do_rename(const unsigned int xid, struct dentry *from_dentry, * source. Note that cross directory moves do not work with * rename by filehandle to various Windows servers. */ - if (rc == 0 || rc != -ETXTBSY) + if (rc == 0 || rc != -EBUSY) goto do_rename_exit; /* open-file renames don't work across directories */ diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c index a82bc51..c0b25b2 100644 --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -62,7 +62,7 @@ static const struct smb_to_posix_error mapping_table_ERRDOS[] = { {ERRdiffdevice, -EXDEV}, {ERRnofiles, -ENOENT}, {ERRwriteprot, -EROFS}, - {ERRbadshare, -ETXTBSY}, + {ERRbadshare, -EBUSY}, {ERRlock, -EACCES}, {ERRunsup, -EINVAL}, {ERRnosuchshare, -ENXIO}, -- cgit v1.1 From 24261fc23db950951760d00c188ba63cc756b932 Mon Sep 17 00:00:00 2001 From: Mateusz Guzik Date: Fri, 8 Mar 2013 16:30:03 +0100 Subject: cifs: delay super block destruction until all cifsFileInfo objects are gone cifsFileInfo objects hold references to dentries and it is possible that these will still be around in workqueues when VFS decides to kill super block during unmount. This results in panics like this one: BUG: Dentry ffff88001f5e76c0{i=66b4a,n=1M-2} still in use (1) [unmount of cifs cifs] ------------[ cut here ]------------ kernel BUG at fs/dcache.c:943! [..] Process umount (pid: 1781, threadinfo ffff88003d6e8000, task ffff880035eeaec0) [..] Call Trace: [] shrink_dcache_for_umount+0x33/0x60 [] generic_shutdown_super+0x2c/0xe0 [] kill_anon_super+0x16/0x30 [] cifs_kill_sb+0x1a/0x30 [cifs] [] deactivate_locked_super+0x57/0x80 [] deactivate_super+0x4e/0x70 [] mntput_no_expire+0xd7/0x130 [] sys_umount+0x9c/0x3c0 [] system_call_fastpath+0x16/0x1b Fix this by making each cifsFileInfo object hold a reference to cifs super block, which implicitly keeps VFS super block around as well. Signed-off-by: Mateusz Guzik Reviewed-by: Jeff Layton Cc: Reported-and-Tested-by: Ben Greear Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 24 ++++++++++++++++++++++++ fs/cifs/cifsfs.h | 4 ++++ fs/cifs/file.c | 6 +++++- 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 1a052c0..054b90b 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -91,6 +91,30 @@ struct workqueue_struct *cifsiod_wq; __u8 cifs_client_guid[SMB2_CLIENT_GUID_SIZE]; #endif +/* + * Bumps refcount for cifs super block. + * Note that it should be only called if a referece to VFS super block is + * already held, e.g. in open-type syscalls context. Otherwise it can race with + * atomic_dec_and_test in deactivate_locked_super. + */ +void +cifs_sb_active(struct super_block *sb) +{ + struct cifs_sb_info *server = CIFS_SB(sb); + + if (atomic_inc_return(&server->active) == 1) + atomic_inc(&sb->s_active); +} + +void +cifs_sb_deactive(struct super_block *sb) +{ + struct cifs_sb_info *server = CIFS_SB(sb); + + if (atomic_dec_and_test(&server->active)) + deactivate_super(sb); +} + static int cifs_read_super(struct super_block *sb) { diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index 7163419..0e32c34 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -41,6 +41,10 @@ extern struct file_system_type cifs_fs_type; extern const struct address_space_operations cifs_addr_ops; extern const struct address_space_operations cifs_addr_ops_smallbuf; +/* Functions related to super block operations */ +extern void cifs_sb_active(struct super_block *sb); +extern void cifs_sb_deactive(struct super_block *sb); + /* Functions related to inodes */ extern const struct inode_operations cifs_dir_inode_ops; extern struct inode *cifs_root_iget(struct super_block *); diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 8c0d855..7a0dd99 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -300,6 +300,8 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, INIT_WORK(&cfile->oplock_break, cifs_oplock_break); mutex_init(&cfile->fh_mutex); + cifs_sb_active(inode->i_sb); + /* * If the server returned a read oplock and we have mandatory brlocks, * set oplock level to None. @@ -349,7 +351,8 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) struct cifs_tcon *tcon = tlink_tcon(cifs_file->tlink); struct TCP_Server_Info *server = tcon->ses->server; struct cifsInodeInfo *cifsi = CIFS_I(inode); - struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); + struct super_block *sb = inode->i_sb; + struct cifs_sb_info *cifs_sb = CIFS_SB(sb); struct cifsLockInfo *li, *tmp; struct cifs_fid fid; struct cifs_pending_open open; @@ -414,6 +417,7 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file) cifs_put_tlink(cifs_file->tlink); dput(cifs_file->dentry); + cifs_sb_deactive(sb); kfree(cifs_file); } -- cgit v1.1 From 27b351c5546008c640b3e65152f60ca74b3706f1 Mon Sep 17 00:00:00 2001 From: Bill Pemberton Date: Wed, 13 Mar 2013 09:50:15 -0400 Subject: USB: quatech2: only write to the tty if the port is open. The commit 2e124b4a390ca85325fae75764bef92f0547fa25 removed the checks that prevented qt2_process_read_urb() from trying to put chars into ttys that weren't actually opened. This resulted in 'tty is NULL' warnings from flush_to_ldisc() when the device was used. The devices use just one read urb for all ports. As a result qt2_process_read_urb() may be called with the current port set to a port number that has not been opened. Add a check if the port is open before calling tty_flip_buffer_push(). Signed-off-by: Bill Pemberton Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/quatech2.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index 00e6c9b..d643a4d 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -661,7 +661,9 @@ void qt2_process_read_urb(struct urb *urb) __func__); break; } - tty_flip_buffer_push(&port->port); + + if (port_priv->is_open) + tty_flip_buffer_push(&port->port); newport = *(ch + 3); @@ -704,7 +706,8 @@ void qt2_process_read_urb(struct urb *urb) tty_insert_flip_string(&port->port, ch, 1); } - tty_flip_buffer_push(&port->port); + if (port_priv->is_open) + tty_flip_buffer_push(&port->port); } static void qt2_write_bulk_callback(struct urb *urb) -- cgit v1.1 From 1e825efb571a87d039cb3fe7ca833a25f11c7cb9 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 26 Feb 2013 16:02:02 +1100 Subject: perf annotate: Fix build with NO_NEWT=1 Commit 18c9e5c "Make it to be able to skip unannotatable symbols" broke the build with NO_NEWT=1: CC builtin-annotate.o builtin-annotate.c: In function 'hists__find_annotations': builtin-annotate.c:161:4: error: duplicate case value builtin-annotate.c:154:4: error: previously used here make: *** [builtin-annotate.o] Error 1 This is because without NEWT support K_LEFT is #defined to -1 in utils/hist.h Fix it by shifting the K_LEFT/K_RIGHT #defines out of the likely range of error values. Signed-off-by: Michael Ellerman Cc: Feng Tang Cc: Namhyung Kim Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1361854923-1814-1-git-send-email-michael@ellerman.id.au Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/hist.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 3862468..609a115 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -208,8 +208,8 @@ static inline int script_browse(const char *script_opt __maybe_unused) return 0; } -#define K_LEFT -1 -#define K_RIGHT -2 +#define K_LEFT -1000 +#define K_RIGHT -2000 #endif #ifdef GTK2_SUPPORT -- cgit v1.1 From 5f7439e07822942f32b9e0a66f4a3cc9c3e29e67 Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Tue, 26 Feb 2013 16:02:03 +1100 Subject: perf report: Fix build with NO_NEWT=1 Commit ad0de09 "Enable the runtime switching of perf data file" broke the build with NO_NEWT=1: CC builtin-report.o builtin-report.c: In function '__cmd_report': builtin-report.c:479:15: error: 'K_SWITCH_INPUT_DATA' undeclared (first use in this function) builtin-report.c:479:15: note: each undeclared identifier is reported only once for each function it appears in builtin-report.c: In function 'cmd_report': builtin-report.c:823:13: error: 'K_SWITCH_INPUT_DATA' undeclared (first use in this function) make: *** [builtin-report.o] Error 1 Fix it by adding a dummy definition of K_SWITCH_INPUT_DATA. Signed-off-by: Michael Ellerman Cc: Feng Tang Cc: Namhyung Kim Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1361854923-1814-2-git-send-email-michael@ellerman.id.au Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/hist.h | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index 609a115..226a4ae 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -210,6 +210,7 @@ static inline int script_browse(const char *script_opt __maybe_unused) #define K_LEFT -1000 #define K_RIGHT -2000 +#define K_SWITCH_INPUT_DATA -3000 #endif #ifdef GTK2_SUPPORT -- cgit v1.1 From d2f32479e5526a1ab3b4e43910fcb279871524ce Mon Sep 17 00:00:00 2001 From: Marcin Slusarz Date: Sun, 17 Feb 2013 16:03:36 +0100 Subject: perf tools: check if -DFORTIFY_SOURCE=2 is allowed It seems gcc (4.7.2) defines _FORTIFY_SOURCE internally and becomes confused when it sees another definition in flags. For me, build failed like this: CHK glibc Makefile:548: *** No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static. Stop. and only with V=1 it printed: :0:0: error: "_FORTIFY_SOURCE" redefined [-Werror] :1:0: note: this is the location of the previous definition Signed-off-by: Marcin Slusarz Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1361113416-8662-1-git-send-email-marcin.slusarz@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index a2108ca..bb74c79 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -95,7 +95,7 @@ ifeq ("$(origin DEBUG)", "command line") PERF_DEBUG = $(DEBUG) endif ifndef PERF_DEBUG - CFLAGS_OPTIMIZE = -O6 -D_FORTIFY_SOURCE=2 + CFLAGS_OPTIMIZE = -O6 endif ifdef PARSER_DEBUG @@ -180,6 +180,12 @@ ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -Werror -Wvolatile-register-var,-W CFLAGS := $(CFLAGS) -Wvolatile-register-var endif +ifndef PERF_DEBUG + ifeq ($(call try-cc,$(SOURCE_HELLO),$(CFLAGS) -D_FORTIFY_SOURCE=2,-D_FORTIFY_SOURCE=2),y) + CFLAGS := $(CFLAGS) -D_FORTIFY_SOURCE=2 + endif +endif + ### --- END CONFIGURATION SECTION --- ifeq ($(srctree),) -- cgit v1.1 From e4dd45fe7add0de09e0e5b2b511732d9c86b6ee7 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Mon, 25 Feb 2013 10:52:48 +0100 Subject: perf record: Fix -C option Currently the -C option does not work for record command, because of the targets mismatch when synthesizing threads. Fixing this by using proper target interface for the synthesize decision. Signed-off-by: Jiri Olsa Reported-by: Oleg Nesterov Cc: Corey Ashford Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Oleg Nesterov Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1361785972-7431-2-git-send-email-jolsa@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index 774c907..f1a939e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -573,13 +573,15 @@ static int __cmd_record(struct perf_record *rec, int argc, const char **argv) perf_event__synthesize_guest_os, tool); } - if (!opts->target.system_wide) + if (perf_target__has_task(&opts->target)) err = perf_event__synthesize_thread_map(tool, evsel_list->threads, process_synthesized_event, machine); - else + else if (perf_target__has_cpu(&opts->target)) err = perf_event__synthesize_threads(tool, process_synthesized_event, machine); + else /* command specified */ + err = 0; if (err != 0) goto out_delete_session; -- cgit v1.1 From b9e8c37220c80e78289a1e87b50c09418eb59a7e Mon Sep 17 00:00:00 2001 From: Jack Mitchell Date: Fri, 8 Mar 2013 11:21:52 +0000 Subject: libtraceevent: Remove hard coded include to /usr/local/include in Makefile having /usr/local/include hardcoded into the makefile is not necessary as this is automatically included by GCC. It also infects cross-compile builds with the host systems includes. Signed-off-by: Jack Mitchell Acked-by: Namhyung Kim Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1362741712-21308-1-git-send-email-ml@communistcode.co.uk Signed-off-by: Arnaldo Carvalho de Melo --- tools/lib/traceevent/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/lib/traceevent/Makefile b/tools/lib/traceevent/Makefile index a20e320..0b0a907 100644 --- a/tools/lib/traceevent/Makefile +++ b/tools/lib/traceevent/Makefile @@ -122,7 +122,7 @@ export Q VERBOSE EVENT_PARSE_VERSION = $(EP_VERSION).$(EP_PATCHLEVEL).$(EP_EXTRAVERSION) -INCLUDES = -I. -I/usr/local/include $(CONFIG_INCLUDES) +INCLUDES = -I. $(CONFIG_INCLUDES) # Set compile option CFLAGS if not set elsewhere CFLAGS ?= -g -Wall -- cgit v1.1 From 79146a69c8bc3f28e51c5267633abc6babf47a31 Mon Sep 17 00:00:00 2001 From: Ananth N Mavinakayanahalli Date: Tue, 12 Mar 2013 14:32:17 +0530 Subject: perf probe: Fix segfault Fix segfault in perf probe due to a bug introduced by commit d8639f068 (perf tools: Stop using 'self' in strlist). Signed-off-by: Ananth N Mavinakayanahalli Acked-by: Srikar Dronamraju Cc: Srikar Dronamraju Link: http://lkml.kernel.org/r/20130312090217.GC4668@in.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/strlist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/util/strlist.c b/tools/perf/util/strlist.c index 55433aa4..eabdce0 100644 --- a/tools/perf/util/strlist.c +++ b/tools/perf/util/strlist.c @@ -143,7 +143,7 @@ struct strlist *strlist__new(bool dupstr, const char *list) slist->rblist.node_delete = strlist__node_delete; slist->dupstr = dupstr; - if (slist && strlist__parse_list(slist, list) != 0) + if (list && strlist__parse_list(slist, list) != 0) goto out_error; } -- cgit v1.1 From 3bf7b07ece6e00747602938f68c1db8001b9925f Mon Sep 17 00:00:00 2001 From: Sukadev Bhattiprolu Date: Tue, 5 Mar 2013 21:48:26 -0800 Subject: perf/POWER7: Create a sysfs format entry for Power7 events Create a sysfs entry, '/sys/bus/event_source/devices/cpu/format/event' which describes the format of the POWER7 PMU events. This code is based on corresponding code in x86. Changelog[v4]: [Michael Ellerman, Paul Mckerras] The event format is different for other POWER cpus. So move the code to POWER7-specific, power7-pmu.c Also, the POWER7 format uses bits 0-19 not 0-20. Changelog[v2]: [Jiri Osla] Use PMU_FORMAT_ATTR rather than duplicating code. Signed-off-by: Sukadev Bhattiprolu Acked-by: Paul Mackerras Tested-by: Michael Ellerman Cc: Andi Kleen Cc: Anton Blanchard Cc: Ingo Molnar Cc: Jiri Olsa Cc: Michael Ellerman Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Robert Richter Cc: Stephane Eranian Cc: benh@kernel.crashing.org Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20130306054826.GA14627@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo --- arch/powerpc/perf/power7-pmu.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/powerpc/perf/power7-pmu.c b/arch/powerpc/perf/power7-pmu.c index b554879..3c475d6 100644 --- a/arch/powerpc/perf/power7-pmu.c +++ b/arch/powerpc/perf/power7-pmu.c @@ -420,7 +420,20 @@ static struct attribute_group power7_pmu_events_group = { .attrs = power7_events_attr, }; +PMU_FORMAT_ATTR(event, "config:0-19"); + +static struct attribute *power7_pmu_format_attr[] = { + &format_attr_event.attr, + NULL, +}; + +struct attribute_group power7_pmu_format_group = { + .name = "format", + .attrs = power7_pmu_format_attr, +}; + static const struct attribute_group *power7_pmu_attr_groups[] = { + &power7_pmu_format_group, &power7_pmu_events_group, NULL, }; -- cgit v1.1 From 2563a4524febe8f4a98e717e02436d1aaf672aa2 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 11 Mar 2013 12:25:19 -0700 Subject: drm/i915: restrict kernel address leak in debugfs Masks kernel address info-leak in object dumps with the %pK suffix, so they cannot be used to target kernel memory corruption attacks if the kptr_restrict sysctl is set. Signed-off-by: Kees Cook Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index aae3148..7299ea4 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -103,7 +103,7 @@ static const char *cache_level_str(int type) static void describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj) { - seq_printf(m, "%p: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s", + seq_printf(m, "%pK: %s%s %8zdKiB %02x %02x %d %d %d%s%s%s", &obj->base, get_pin_flag(obj), get_tiling_flag(obj), -- cgit v1.1 From 3118a4f652c7b12c752f3222af0447008f9b2368 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Mon, 11 Mar 2013 17:31:45 -0700 Subject: drm/i915: bounds check execbuffer relocation count It is possible to wrap the counter used to allocate the buffer for relocation copies. This could lead to heap writing overflows. CVE-2013-0913 v3: collapse test, improve comment v2: move check into validate_exec_list Signed-off-by: Kees Cook Reported-by: Pinkie Pie Cc: stable@vger.kernel.org Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 2f2daeb..3b11ab0 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -732,6 +732,8 @@ validate_exec_list(struct drm_i915_gem_exec_object2 *exec, int count) { int i; + int relocs_total = 0; + int relocs_max = INT_MAX / sizeof(struct drm_i915_gem_relocation_entry); for (i = 0; i < count; i++) { char __user *ptr = (char __user *)(uintptr_t)exec[i].relocs_ptr; @@ -740,10 +742,13 @@ validate_exec_list(struct drm_i915_gem_exec_object2 *exec, if (exec[i].flags & __EXEC_OBJECT_UNKNOWN_FLAGS) return -EINVAL; - /* First check for malicious input causing overflow */ - if (exec[i].relocation_count > - INT_MAX / sizeof(struct drm_i915_gem_relocation_entry)) + /* First check for malicious input causing overflow in + * the worst case where we need to allocate the entire + * relocation tree as a single array. + */ + if (exec[i].relocation_count > relocs_max - relocs_total) return -EINVAL; + relocs_total += exec[i].relocation_count; length = exec[i].relocation_count * sizeof(struct drm_i915_gem_relocation_entry); -- cgit v1.1 From 740466bc89ad8bd5afcc8de220f715f62b21e365 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 13 Mar 2013 11:15:19 -0400 Subject: tracing: Fix free of probe entry by calling call_rcu_sched() Because function tracing is very invasive, and can even trace calls to rcu_read_lock(), RCU access in function tracing is done with preempt_disable_notrace(). This requires a synchronize_sched() for updates and not a synchronize_rcu(). Function probes (traceon, traceoff, etc) must be freed after a synchronize_sched() after its entry has been removed from the hash. But call_rcu() is used. Fix this by using call_rcu_sched(). Also fix the usage to use hlist_del_rcu() instead of hlist_del(). Cc: stable@vger.kernel.org Cc: Paul McKenney Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 98ca94a..e6effd0 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3108,8 +3108,8 @@ __unregister_ftrace_function_probe(char *glob, struct ftrace_probe_ops *ops, continue; } - hlist_del(&entry->node); - call_rcu(&entry->rcu, ftrace_free_entry_rcu); + hlist_del_rcu(&entry->node); + call_rcu_sched(&entry->rcu, ftrace_free_entry_rcu); } } __disable_ftrace_function_probe(); -- cgit v1.1 From e66eded8309ebf679d3d3c1f5820d1f2ca332c71 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 13 Mar 2013 11:51:49 -0700 Subject: userns: Don't allow CLONE_NEWUSER | CLONE_FS Don't allowing sharing the root directory with processes in a different user namespace. There doesn't seem to be any point, and to allow it would require the overhead of putting a user namespace reference in fs_struct (for permission checks) and incrementing that reference count on practically every call to fork. So just perform the inexpensive test of forbidding sharing fs_struct acrosss processes in different user namespaces. We already disallow other forms of threading when unsharing a user namespace so this should be no real burden in practice. This updates setns, clone, and unshare to disallow multiple user namespaces sharing an fs_struct. Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" Signed-off-by: Linus Torvalds --- kernel/fork.c | 5 ++++- kernel/user_namespace.c | 4 ++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/kernel/fork.c b/kernel/fork.c index 8d932b1..1766d32 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -1141,6 +1141,9 @@ static struct task_struct *copy_process(unsigned long clone_flags, if ((clone_flags & (CLONE_NEWNS|CLONE_FS)) == (CLONE_NEWNS|CLONE_FS)) return ERR_PTR(-EINVAL); + if ((clone_flags & (CLONE_NEWUSER|CLONE_FS)) == (CLONE_NEWUSER|CLONE_FS)) + return ERR_PTR(-EINVAL); + /* * Thread groups must share signals as well, and detached threads * can only be started up within the thread group. @@ -1807,7 +1810,7 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags) * If unsharing a user namespace must also unshare the thread. */ if (unshare_flags & CLONE_NEWUSER) - unshare_flags |= CLONE_THREAD; + unshare_flags |= CLONE_THREAD | CLONE_FS; /* * If unsharing a pid namespace must also unshare the thread. */ diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index 8b65083..b14f4d3 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -21,6 +21,7 @@ #include #include #include +#include static struct kmem_cache *user_ns_cachep __read_mostly; @@ -837,6 +838,9 @@ static int userns_install(struct nsproxy *nsproxy, void *ns) if (atomic_read(¤t->mm->mm_users) > 1) return -EINVAL; + if (current->fs->users != 1) + return -EINVAL; + if (!ns_capable(user_ns, CAP_SYS_ADMIN)) return -EPERM; -- cgit v1.1 From ebf47beb660e5580df7bee06d5cf9d37c0f22fac Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 13 Mar 2013 14:59:30 -0700 Subject: include/linux/res_counter.h needs errno.h alpha allmodconfig: In file included from mm/memcontrol.c:28: include/linux/res_counter.h: In function 'res_counter_set_limit': include/linux/res_counter.h:203: error: 'EBUSY' undeclared (first use in this function) include/linux/res_counter.h:203: error: (Each undeclared identifier is reported only once include/linux/res_counter.h:203: error: for each function it appears in.) Cc: Kamezawa Hiroyuki Cc: Glauber Costa Cc: Tejun Heo Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/res_counter.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/res_counter.h b/include/linux/res_counter.h index 5ae8456..c230994 100644 --- a/include/linux/res_counter.h +++ b/include/linux/res_counter.h @@ -14,6 +14,7 @@ */ #include +#include /* * The core object. the cgroup that wishes to account for some -- cgit v1.1 From f8749452adcddd62e3707709ec2ae4856e70a3f2 Mon Sep 17 00:00:00 2001 From: Toshi Kani Date: Wed, 13 Mar 2013 14:59:31 -0700 Subject: mm: remove_memory(): fix end_pfn setting remove_memory() calls walk_memory_range() with [start_pfn, end_pfn), where end_pfn is exclusive in this range. Therefore, end_pfn needs to be set to the next page of the end address. Signed-off-by: Toshi Kani Cc: Wen Congyang Cc: Tang Chen Cc: Kamezawa Hiroyuki Cc: KOSAKI Motohiro Cc: Jiang Liu Cc: Jianguo Wu Cc: Lai Jiangshan Cc: Wu Jianguo Cc: Yasuaki Ishimatsu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory_hotplug.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index b81a367b..9597eec 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1801,7 +1801,7 @@ int __ref remove_memory(int nid, u64 start, u64 size) int retry = 1; start_pfn = PFN_DOWN(start); - end_pfn = start_pfn + PFN_DOWN(size); + end_pfn = PFN_UP(start + size - 1); /* * When CONFIG_MEMCG is on, one memory block may be used by other -- cgit v1.1 From 2ca39528c01a933f6689cd6505ce65bd6d68a530 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 13 Mar 2013 14:59:33 -0700 Subject: signal: always clear sa_restorer on execve When the new signal handlers are set up, the location of sa_restorer is not cleared, leaking a parent process's address space location to children. This allows for a potential bypass of the parent's ASLR by examining the sa_restorer value returned when calling sigaction(). Based on what should be considered "secret" about addresses, it only matters across the exec not the fork (since the VMAs haven't changed until the exec). But since exec sets SIG_DFL and keeps sa_restorer, this is where it should be fixed. Given the few uses of sa_restorer, a "set" function was not written since this would be the only use. Instead, we use __ARCH_HAS_SA_RESTORER, as already done in other places. Example of the leak before applying this patch: $ cat /proc/$$/maps ... 7fb9f3083000-7fb9f3238000 r-xp 00000000 fd:01 404469 .../libc-2.15.so ... $ ./leak ... 7f278bc74000-7f278be29000 r-xp 00000000 fd:01 404469 .../libc-2.15.so ... 1 0 (nil) 0x7fb9f30b94a0 2 4000000 (nil) 0x7f278bcaa4a0 3 4000000 (nil) 0x7f278bcaa4a0 4 0 (nil) 0x7fb9f30b94a0 ... [akpm@linux-foundation.org: use SA_RESTORER for backportability] Signed-off-by: Kees Cook Reported-by: Emese Revfy Cc: Emese Revfy Cc: PaX Team Cc: Al Viro Cc: Oleg Nesterov Cc: "Eric W. Biederman" Cc: Serge Hallyn Cc: Julien Tinnes Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/signal.c b/kernel/signal.c index d63c79e..43b0d4a 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -485,6 +485,9 @@ flush_signal_handlers(struct task_struct *t, int force_default) if (force_default || ka->sa.sa_handler != SIG_IGN) ka->sa.sa_handler = SIG_DFL; ka->sa.sa_flags = 0; +#ifdef SA_RESTORER + ka->sa.sa_restorer = NULL; +#endif sigemptyset(&ka->sa.sa_mask); ka++; } -- cgit v1.1 From 522cff142d7d2f9230839c9e1f21a4d8bcc22a4a Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 13 Mar 2013 14:59:34 -0700 Subject: kernel/signal.c: use __ARCH_HAS_SA_RESTORER instead of SA_RESTORER __ARCH_HAS_SA_RESTORER is the preferred conditional for use in 3.9 and later kernels, per Kees. Cc: Emese Revfy Cc: Emese Revfy Cc: PaX Team Cc: Al Viro Cc: Oleg Nesterov Cc: "Eric W. Biederman" Cc: Serge Hallyn Cc: Julien Tinnes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/signal.c b/kernel/signal.c index 43b0d4a..dd72567 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -485,7 +485,7 @@ flush_signal_handlers(struct task_struct *t, int force_default) if (force_default || ka->sa.sa_handler != SIG_IGN) ka->sa.sa_handler = SIG_DFL; ka->sa.sa_flags = 0; -#ifdef SA_RESTORER +#ifdef __ARCH_HAS_SA_RESTORER ka->sa.sa_restorer = NULL; #endif sigemptyset(&ka->sa.sa_mask); -- cgit v1.1 From 801cb2d62d5f673ac671c01397956d8b77a5215b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:36 -0700 Subject: nfsd: remove unused get_new_stid() get_new_stid() is no longer used since commit 3abdb607125 ("nfsd4: simplify idr allocation"). Remove it. Signed-off-by: Tejun Heo Acked-by: J. Bruce Fields Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfsd/nfs4state.c | 31 ------------------------------- 1 file changed, 31 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 16d39c6..d91d6db 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -230,37 +230,6 @@ static void nfs4_file_put_access(struct nfs4_file *fp, int oflag) __nfs4_file_put_access(fp, oflag); } -static inline int get_new_stid(struct nfs4_stid *stid) -{ - static int min_stateid = 0; - struct idr *stateids = &stid->sc_client->cl_stateids; - int new_stid; - int error; - - error = idr_get_new_above(stateids, stid, min_stateid, &new_stid); - /* - * Note: the necessary preallocation was done in - * nfs4_alloc_stateid(). The idr code caps the number of - * preallocations that can exist at a time, but the state lock - * prevents anyone from using ours before we get here: - */ - WARN_ON_ONCE(error); - /* - * It shouldn't be a problem to reuse an opaque stateid value. - * I don't think it is for 4.1. But with 4.0 I worry that, for - * example, a stray write retransmission could be accepted by - * the server when it should have been rejected. Therefore, - * adopt a trick from the sctp code to attempt to maximize the - * amount of time until an id is reused, by ensuring they always - * "increase" (mod INT_MAX): - */ - - min_stateid = new_stid+1; - if (min_stateid == INT_MAX) - min_stateid = 0; - return new_stid; -} - static struct nfs4_stid *nfs4_alloc_stid(struct nfs4_client *cl, struct kmem_cache *slab) { -- cgit v1.1 From ebd6c70714f5eda9cd1b60d23754ffd1d62481f6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:37 -0700 Subject: nfsd: convert to idr_alloc() idr_get_new*() and friends are about to be deprecated. Convert to the new idr_alloc() interface. Only compile-tested. Signed-off-by: Tejun Heo Acked-by: J. Bruce Fields Tested-by: J. Bruce Fields Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/nfsd/nfs4state.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index d91d6db..2e27430 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -242,9 +242,8 @@ kmem_cache *slab) if (!stid) return NULL; - if (!idr_pre_get(stateids, GFP_KERNEL)) - goto out_free; - if (idr_get_new_above(stateids, stid, min_stateid, &new_id)) + new_id = idr_alloc(stateids, stid, min_stateid, 0, GFP_KERNEL); + if (new_id < 0) goto out_free; stid->sc_client = cl; stid->sc_type = 0; -- cgit v1.1 From e68035fb65dec05718d765fbea14d2e527214ff6 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:38 -0700 Subject: workqueue: convert to idr_alloc() idr_get_new*() and friends are about to be deprecated. Convert to the new idr_alloc() interface. Signed-off-by: Tejun Heo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/workqueue.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/workqueue.c b/kernel/workqueue.c index 81f2457..55fac5b 100644 --- a/kernel/workqueue.c +++ b/kernel/workqueue.c @@ -457,11 +457,12 @@ static int worker_pool_assign_id(struct worker_pool *pool) int ret; mutex_lock(&worker_pool_idr_mutex); - idr_pre_get(&worker_pool_idr, GFP_KERNEL); - ret = idr_get_new(&worker_pool_idr, pool, &pool->id); + ret = idr_alloc(&worker_pool_idr, pool, 0, 0, GFP_KERNEL); + if (ret >= 0) + pool->id = ret; mutex_unlock(&worker_pool_idr_mutex); - return ret; + return ret < 0 ? ret : 0; } /* -- cgit v1.1 From 95e1b7145ed220a2124f9566ad97f4ccecdba063 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:39 -0700 Subject: mlx4: remove leftover idr_pre_get() call Commit 6a9200603d76 ("IB/mlx4: convert to idr_alloc()") forgot to remove idr_pre_get() call in mlx4_ib_cm_paravirt_init(). It's unnecessary and idr_pre_get() will soon be deprecated. Remove it. Signed-off-by: Tejun Heo Cc: Jack Morgenstein Cc: Or Gerlitz Cc: Roland Dreier Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/infiniband/hw/mlx4/cm.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx4/cm.c b/drivers/infiniband/hw/mlx4/cm.c index e0d79b2..add98d0 100644 --- a/drivers/infiniband/hw/mlx4/cm.c +++ b/drivers/infiniband/hw/mlx4/cm.c @@ -362,7 +362,6 @@ void mlx4_ib_cm_paravirt_init(struct mlx4_ib_dev *dev) INIT_LIST_HEAD(&dev->sriov.cm_list); dev->sriov.sl_id_map = RB_ROOT; idr_init(&dev->sriov.pv_id_table); - idr_pre_get(&dev->sriov.pv_id_table, GFP_KERNEL); } /* slave = -1 ==> all slaves */ -- cgit v1.1 From a37c3010002322f40fe668162a237aa99aac42d1 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:40 -0700 Subject: zcache: convert to idr_alloc() idr_get_new*() and friends are about to be deprecated. Convert to the new idr_alloc() interface. Only compile tested. Signed-off-by: Tejun Heo Cc: Dan Magenheimer Acked-by: Greg Kroah-Hartman Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/staging/zcache/ramster/tcp.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/staging/zcache/ramster/tcp.c b/drivers/staging/zcache/ramster/tcp.c index aa2a1a7..f6e1e52 100644 --- a/drivers/staging/zcache/ramster/tcp.c +++ b/drivers/staging/zcache/ramster/tcp.c @@ -300,27 +300,22 @@ static u8 r2net_num_from_nn(struct r2net_node *nn) static int r2net_prep_nsw(struct r2net_node *nn, struct r2net_status_wait *nsw) { - int ret = 0; + int ret; - do { - if (!idr_pre_get(&nn->nn_status_idr, GFP_ATOMIC)) { - ret = -EAGAIN; - break; - } - spin_lock(&nn->nn_lock); - ret = idr_get_new(&nn->nn_status_idr, nsw, &nsw->ns_id); - if (ret == 0) - list_add_tail(&nsw->ns_node_item, - &nn->nn_status_list); - spin_unlock(&nn->nn_lock); - } while (ret == -EAGAIN); + spin_lock(&nn->nn_lock); + ret = idr_alloc(&nn->nn_status_idr, nsw, 0, 0, GFP_ATOMIC); + if (ret >= 0) { + nsw->ns_id = ret; + list_add_tail(&nsw->ns_node_item, &nn->nn_status_list); + } + spin_unlock(&nn->nn_lock); - if (ret == 0) { + if (ret >= 0) { init_waitqueue_head(&nsw->ns_wq); nsw->ns_sys_status = R2NET_ERR_NONE; nsw->ns_status = 0; + return 0; } - return ret; } -- cgit v1.1 From 8e467e855ca5ed2921f290655f96ac40d5dc571c Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:41 -0700 Subject: tidspbridge: convert to idr_alloc() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit idr_get_new*() and friends are about to be deprecated. Convert to the new idr_alloc() interface. There are some peculiarities and possible bugs in the converted functions. This patch preserves those. * drv_insert_node_res_element() returns -ENOMEM on alloc failure, -EFAULT if id space is exhausted. -EFAULT is at best misleading. * drv_proc_insert_strm_res_element() is even weirder. It returns -EFAULT if kzalloc() fails, -ENOMEM if idr preloading fails and -EPERM if id space is exhausted. What's going on here? * drv_proc_insert_strm_res_element() doesn't free *pstrm_res after failure. Only compile tested. Signed-off-by: Tejun Heo Acked-by: Greg Kroah-Hartman Cc: Víctor Manuel Jáquez Leal Cc: Rene Sapiens Cc: Armando Uribe Cc: Omar Ramirez Luna Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/staging/tidspbridge/rmgr/drv.c | 70 +++++++++++++--------------------- 1 file changed, 26 insertions(+), 44 deletions(-) diff --git a/drivers/staging/tidspbridge/rmgr/drv.c b/drivers/staging/tidspbridge/rmgr/drv.c index db1da28..be26917 100644 --- a/drivers/staging/tidspbridge/rmgr/drv.c +++ b/drivers/staging/tidspbridge/rmgr/drv.c @@ -76,37 +76,28 @@ int drv_insert_node_res_element(void *hnode, void *node_resource, struct node_res_object **node_res_obj = (struct node_res_object **)node_resource; struct process_context *ctxt = (struct process_context *)process_ctxt; - int status = 0; int retval; *node_res_obj = kzalloc(sizeof(struct node_res_object), GFP_KERNEL); - if (!*node_res_obj) { - status = -ENOMEM; - goto func_end; - } + if (!*node_res_obj) + return -ENOMEM; (*node_res_obj)->node = hnode; - retval = idr_get_new(ctxt->node_id, *node_res_obj, - &(*node_res_obj)->id); - if (retval == -EAGAIN) { - if (!idr_pre_get(ctxt->node_id, GFP_KERNEL)) { - pr_err("%s: OUT OF MEMORY\n", __func__); - status = -ENOMEM; - goto func_end; - } - - retval = idr_get_new(ctxt->node_id, *node_res_obj, - &(*node_res_obj)->id); + retval = idr_alloc(ctxt->node_id, *node_res_obj, 0, 0, GFP_KERNEL); + if (retval >= 0) { + (*node_res_obj)->id = retval; + return 0; } - if (retval) { + + kfree(*node_res_obj); + + if (retval == -ENOSPC) { pr_err("%s: FAILED, IDR is FULL\n", __func__); - status = -EFAULT; + return -EFAULT; + } else { + pr_err("%s: OUT OF MEMORY\n", __func__); + return -ENOMEM; } -func_end: - if (status) - kfree(*node_res_obj); - - return status; } /* Release all Node resources and its context @@ -201,35 +192,26 @@ int drv_proc_insert_strm_res_element(void *stream_obj, struct strm_res_object **pstrm_res = (struct strm_res_object **)strm_res; struct process_context *ctxt = (struct process_context *)process_ctxt; - int status = 0; int retval; *pstrm_res = kzalloc(sizeof(struct strm_res_object), GFP_KERNEL); - if (*pstrm_res == NULL) { - status = -EFAULT; - goto func_end; - } + if (*pstrm_res == NULL) + return -EFAULT; (*pstrm_res)->stream = stream_obj; - retval = idr_get_new(ctxt->stream_id, *pstrm_res, - &(*pstrm_res)->id); - if (retval == -EAGAIN) { - if (!idr_pre_get(ctxt->stream_id, GFP_KERNEL)) { - pr_err("%s: OUT OF MEMORY\n", __func__); - status = -ENOMEM; - goto func_end; - } - - retval = idr_get_new(ctxt->stream_id, *pstrm_res, - &(*pstrm_res)->id); + retval = idr_alloc(ctxt->stream_id, *pstrm_res, 0, 0, GFP_KERNEL); + if (retval >= 0) { + (*pstrm_res)->id = retval; + return 0; } - if (retval) { + + if (retval == -ENOSPC) { pr_err("%s: FAILED, IDR is FULL\n", __func__); - status = -EPERM; + return -EPERM; + } else { + pr_err("%s: OUT OF MEMORY\n", __func__); + return -ENOMEM; } - -func_end: - return status; } static int drv_proc_free_strm_res(int id, void *p, void *process_ctxt) -- cgit v1.1 From c8615d3716fe327c2540cf514a34b227dc9b39e8 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:42 -0700 Subject: idr: deprecate idr_pre_get() and idr_get_new[_above]() Now that all in-kernel users are converted to ues the new alloc interface, mark the old interface deprecated. We should be able to remove these in a few releases. Signed-off-by: Tejun Heo Cc: Rusty Russell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/idr.h | 66 ++++++++++++++++++++++++++++++++++++++++------------- lib/idr.c | 41 ++++----------------------------- 2 files changed, 55 insertions(+), 52 deletions(-) diff --git a/include/linux/idr.h b/include/linux/idr.h index 8c1f81f..2640c7e 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -73,8 +73,6 @@ struct idr { */ void *idr_find_slowpath(struct idr *idp, int id); -int idr_pre_get(struct idr *idp, gfp_t gfp_mask); -int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); void idr_preload(gfp_t gfp_mask); int idr_alloc(struct idr *idp, void *ptr, int start, int end, gfp_t gfp_mask); int idr_for_each(struct idr *idp, @@ -120,19 +118,6 @@ static inline void *idr_find(struct idr *idr, int id) } /** - * idr_get_new - allocate new idr entry - * @idp: idr handle - * @ptr: pointer you want associated with the id - * @id: pointer to the allocated handle - * - * Simple wrapper around idr_get_new_above() w/ @starting_id of zero. - */ -static inline int idr_get_new(struct idr *idp, void *ptr, int *id) -{ - return idr_get_new_above(idp, ptr, 0, id); -} - -/** * idr_for_each_entry - iterate over an idr's elements of a given type * @idp: idr handle * @entry: the type * to use as cursor @@ -143,7 +128,56 @@ static inline int idr_get_new(struct idr *idp, void *ptr, int *id) entry != NULL; \ ++id, entry = (typeof(entry))idr_get_next((idp), &(id))) -void __idr_remove_all(struct idr *idp); /* don't use */ +/* + * Don't use the following functions. These exist only to suppress + * deprecated warnings on EXPORT_SYMBOL()s. + */ +int __idr_pre_get(struct idr *idp, gfp_t gfp_mask); +int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id); +void __idr_remove_all(struct idr *idp); + +/** + * idr_pre_get - reserve resources for idr allocation + * @idp: idr handle + * @gfp_mask: memory allocation flags + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_pre_get(struct idr *idp, gfp_t gfp_mask) +{ + return __idr_pre_get(idp, gfp_mask); +} + +/** + * idr_get_new_above - allocate new idr entry above or equal to a start id + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @starting_id: id to start search at + * @id: pointer to the allocated handle + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_get_new_above(struct idr *idp, void *ptr, + int starting_id, int *id) +{ + return __idr_get_new_above(idp, ptr, starting_id, id); +} + +/** + * idr_get_new - allocate new idr entry + * @idp: idr handle + * @ptr: pointer you want associated with the id + * @id: pointer to the allocated handle + * + * Part of old alloc interface. This is going away. Use + * idr_preload[_end]() and idr_alloc() instead. + */ +static inline int __deprecated idr_get_new(struct idr *idp, void *ptr, int *id) +{ + return __idr_get_new_above(idp, ptr, 0, id); +} /** * idr_remove_all - remove all ids from the given idr tree diff --git a/lib/idr.c b/lib/idr.c index 4f82a28..c6fb829 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -184,20 +184,7 @@ static void idr_mark_full(struct idr_layer **pa, int id) } } -/** - * idr_pre_get - reserve resources for idr allocation - * @idp: idr handle - * @gfp_mask: memory allocation flags - * - * This function should be called prior to calling the idr_get_new* functions. - * It preallocates enough memory to satisfy the worst possible allocation. The - * caller should pass in GFP_KERNEL if possible. This of course requires that - * no spinning locks be held. - * - * If the system is REALLY out of memory this function returns %0, - * otherwise %1. - */ -int idr_pre_get(struct idr *idp, gfp_t gfp_mask) +int __idr_pre_get(struct idr *idp, gfp_t gfp_mask) { while (idp->id_free_cnt < MAX_IDR_FREE) { struct idr_layer *new; @@ -208,7 +195,7 @@ int idr_pre_get(struct idr *idp, gfp_t gfp_mask) } return 1; } -EXPORT_SYMBOL(idr_pre_get); +EXPORT_SYMBOL(__idr_pre_get); /** * sub_alloc - try to allocate an id without growing the tree depth @@ -375,25 +362,7 @@ static void idr_fill_slot(struct idr *idr, void *ptr, int id, idr_mark_full(pa, id); } -/** - * idr_get_new_above - allocate new idr entry above or equal to a start id - * @idp: idr handle - * @ptr: pointer you want associated with the id - * @starting_id: id to start search at - * @id: pointer to the allocated handle - * - * This is the allocate id function. It should be called with any - * required locks. - * - * If allocation from IDR's private freelist fails, idr_get_new_above() will - * return %-EAGAIN. The caller should retry the idr_pre_get() call to refill - * IDR's preallocation and then retry the idr_get_new_above() call. - * - * If the idr is full idr_get_new_above() will return %-ENOSPC. - * - * @id returns a value in the range @starting_id ... %0x7fffffff - */ -int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id) +int __idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id) { struct idr_layer *pa[MAX_IDR_LEVEL + 1]; int rv; @@ -406,7 +375,7 @@ int idr_get_new_above(struct idr *idp, void *ptr, int starting_id, int *id) *id = rv; return 0; } -EXPORT_SYMBOL(idr_get_new_above); +EXPORT_SYMBOL(__idr_get_new_above); /** * idr_preload - preload for idr_alloc() @@ -907,7 +876,7 @@ static void free_bitmap(struct ida *ida, struct ida_bitmap *bitmap) int ida_pre_get(struct ida *ida, gfp_t gfp_mask) { /* allocate idr_layers */ - if (!idr_pre_get(&ida->idr, gfp_mask)) + if (!__idr_pre_get(&ida->idr, gfp_mask)) return 0; /* allocate free_bitmap */ -- cgit v1.1 From 6d7825b10dbeafd60627cd04291fb10ec2b5b973 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 13 Mar 2013 14:59:43 -0700 Subject: mm/fremap.c: fix oops on error path If find_vma() fails, sys_remap_file_pages() will dereference `vma', which contains NULL. Fix it by checking the pointer. (We could alternatively check for err==0, but this seems more direct) (The vm_flags change is to squish a bogus used-uninitialised warning without adding extra code). Reported-by: Tommi Rantala Cc: Michel Lespinasse Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/fremap.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/mm/fremap.c b/mm/fremap.c index 0cd4c1148..6a8da7e 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -163,7 +163,8 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, * and that the remapped range is valid and fully within * the single existing vma. */ - if (!vma || !(vma->vm_flags & VM_SHARED)) + vm_flags = vma->vm_flags; + if (!vma || !(vm_flags & VM_SHARED)) goto out; if (!vma->vm_ops || !vma->vm_ops->remap_pages) @@ -254,7 +255,8 @@ get_write_lock: */ out: - vm_flags = vma->vm_flags; + if (vma) + vm_flags = vma->vm_flags; if (likely(!has_write_lock)) up_read(&mm->mmap_sem); else -- cgit v1.1 From 97da55fcec6e3898f50010a6847dfa64f7c085e6 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Wed, 13 Mar 2013 14:59:44 -0700 Subject: decompressors: fix typo "POWERPC" Commit 5dc49c75a26b ("decompressors: make the default XZ_DEC_* config match the selected architecture") added default y if POWERPC to lib/xz/Kconfig. But there is no Kconfig symbol POWERPC. The most general Kconfig symbol for the powerpc architecture is PPC. So let's use that. Signed-off-by: Paul Bolle Cc: Florian Fainelli Cc: Lasse Collin Cc: Benjamin Herrenschmidt Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/xz/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/xz/Kconfig b/lib/xz/Kconfig index 82a04d7..08837db 100644 --- a/lib/xz/Kconfig +++ b/lib/xz/Kconfig @@ -15,7 +15,7 @@ config XZ_DEC_X86 config XZ_DEC_POWERPC bool "PowerPC BCJ filter decoder" - default y if POWERPC + default y if PPC select XZ_DEC_BCJ config XZ_DEC_IA64 -- cgit v1.1 From 51b154ed5289682364b830858a4a1ca47fcd04e7 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 13 Mar 2013 14:59:45 -0700 Subject: UAPI: fix endianness conditionals in linux/aio_abi.h In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be compared against __BYTE_ORDER in preprocessor conditionals where these are exposed to userspace (that is they're not inside __KERNEL__ conditionals). However, in the main kernel the norm is to check for "defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and this has incorrectly leaked into the userspace headers. The definition of PADDED() in linux/aio_abi.h is wrong in this way. Note that userspace will likely interpret this and thus the order of fields in struct iocb incorrectly as the little-endian variant on big-endian machines - depending on header inclusion order. [!!!] NOTE [!!!] This patch may adversely change the userspace API. It might be better to fix the ordering of aio_key and aio_reserved1 in struct iocb. Signed-off-by: David Howells Acked-by: Benjamin LaHaise Acked-by: Jeff Moyer Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/uapi/linux/aio_abi.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/aio_abi.h b/include/uapi/linux/aio_abi.h index 86fa7a7..bb2554f 100644 --- a/include/uapi/linux/aio_abi.h +++ b/include/uapi/linux/aio_abi.h @@ -62,9 +62,9 @@ struct io_event { __s64 res2; /* secondary result */ }; -#if defined(__LITTLE_ENDIAN) +#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) #define PADDED(x,y) x, y -#elif defined(__BIG_ENDIAN) +#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) #define PADDED(x,y) y, x #else #error edit for your odd byteorder. -- cgit v1.1 From 29ba06b9ed51d49dea6c79c3c16b961d661262bd Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 13 Mar 2013 14:59:46 -0700 Subject: UAPI: fix endianness conditionals in linux/acct.h In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be compared against __BYTE_ORDER in preprocessor conditionals where these are exposed to userspace (that is they're not inside __KERNEL__ conditionals). However, in the main kernel the norm is to check for "defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and this has incorrectly leaked into the userspace headers. The definition of ACCT_BYTEORDER in linux/acct.h is wrong in this way. Note that userspace will likely interpret this incorrectly as the big-endian variant on little-endian machines - depending on header inclusion order. [!!!] NOTE [!!!] This patch may adversely change the userspace API. It might be better to fix the value of ACCT_BYTEORDER. Signed-off-by: David Howells Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/uapi/linux/acct.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/acct.h b/include/uapi/linux/acct.h index 11b6ca3..df2f9a0 100644 --- a/include/uapi/linux/acct.h +++ b/include/uapi/linux/acct.h @@ -107,10 +107,12 @@ struct acct_v3 #define ACORE 0x08 /* ... dumped core */ #define AXSIG 0x10 /* ... was killed by a signal */ -#ifdef __BIG_ENDIAN +#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) #define ACCT_BYTEORDER 0x80 /* accounting file is big endian */ -#else +#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) #define ACCT_BYTEORDER 0x00 /* accounting file is little endian */ +#else +#error unspecified endianness #endif #ifndef __KERNEL__ -- cgit v1.1 From ca044f9a9ed492f0f7e52df999c10ca6f7cfc5c0 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 13 Mar 2013 14:59:47 -0700 Subject: UAPI: fix endianness conditionals in linux/raid/md_p.h In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be compared against __BYTE_ORDER in preprocessor conditionals where these are exposed to userspace (that is they're not inside __KERNEL__ conditionals). However, in the main kernel the norm is to check for "defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and this has incorrectly leaked into the userspace headers. The definition of struct mdp_superblock_s in linux/raid/md_p.h is wrong in this way. Note that userspace will likely interpret the ordering of the fields incorrectly as the big-endian variant on a little-endian machines - depending on header inclusion order. [!!!] NOTE [!!!] This patch may adversely change the userspace API. It might be better to fix the ordering of events_hi, events_lo, cp_events_hi and cp_events_lo in struct mdp_superblock_s / typedef mdp_super_t. Signed-off-by: David Howells Acked-by: NeilBrown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/uapi/linux/raid/md_p.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h index ee75353..fe1a540 100644 --- a/include/uapi/linux/raid/md_p.h +++ b/include/uapi/linux/raid/md_p.h @@ -145,16 +145,18 @@ typedef struct mdp_superblock_s { __u32 failed_disks; /* 4 Number of failed disks */ __u32 spare_disks; /* 5 Number of spare disks */ __u32 sb_csum; /* 6 checksum of the whole superblock */ -#ifdef __BIG_ENDIAN +#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) __u32 events_hi; /* 7 high-order of superblock update count */ __u32 events_lo; /* 8 low-order of superblock update count */ __u32 cp_events_hi; /* 9 high-order of checkpoint update count */ __u32 cp_events_lo; /* 10 low-order of checkpoint update count */ -#else +#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) __u32 events_lo; /* 7 low-order of superblock update count */ __u32 events_hi; /* 8 high-order of superblock update count */ __u32 cp_events_lo; /* 9 low-order of checkpoint update count */ __u32 cp_events_hi; /* 10 high-order of checkpoint update count */ +#else +#error unspecified endianness #endif __u32 recovery_cp; /* 11 recovery checkpoint sector count */ /* There are only valid for minor_version > 90 */ -- cgit v1.1 From 415586c9e6d35ca116af714d7d0bea9c9f998ce5 Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 13 Mar 2013 14:59:48 -0700 Subject: UAPI: fix endianness conditionals in M32R's asm/stat.h In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be compared against __BYTE_ORDER in preprocessor conditionals where these are exposed to userspace (that is they're not inside __KERNEL__ conditionals). However, in the main kernel the norm is to check for "defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and this has incorrectly leaked into the userspace headers. The definition of struct stat64 in M32R's asm/stat.h is wrong in this way. Note that userspace will likely interpret the field order incorrectly as the big-endian variant on little-endian machines - depending on header inclusion order. [!!!] NOTE [!!!] This patch may adversely change the userspace API. It might be better to fix the ordering of st_blocks and __pad4 in struct stat64. Signed-off-by: David Howells Cc: Hirokazu Takata Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/m32r/include/uapi/asm/stat.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/m32r/include/uapi/asm/stat.h b/arch/m32r/include/uapi/asm/stat.h index da4518f..98470fe 100644 --- a/arch/m32r/include/uapi/asm/stat.h +++ b/arch/m32r/include/uapi/asm/stat.h @@ -63,10 +63,10 @@ struct stat64 { long long st_size; unsigned long st_blksize; -#if defined(__BIG_ENDIAN) +#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN) unsigned long __pad4; /* future possible st_blocks high bits */ unsigned long st_blocks; /* Number 512-byte blocks allocated. */ -#elif defined(__LITTLE_ENDIAN) +#elif defined(__BYTE_ORDER) ? __BYTE_ORDER == __LITTLE_ENDIAN : defined(__LITTLE_ENDIAN) unsigned long st_blocks; /* Number 512-byte blocks allocated. */ unsigned long __pad4; /* future possible st_blocks high bits */ #else -- cgit v1.1 From 59bfbcf01967d4d3370a2b8294673dd709e732cc Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Wed, 13 Mar 2013 14:59:49 -0700 Subject: idr: idr_alloc() shouldn't trigger lowmem warning when preloaded GFP_NOIO is often used for idr_alloc() inside preloaded section as the allocation mask doesn't really matter. If the idr tree needs to be expanded, idr_alloc() first tries to allocate using the specified allocation mask and if it fails falls back to the preloaded buffer. This order prevent non-preloading idr_alloc() users from taking advantage of preloading ones by using preload buffer without filling it shifting the burden of allocation to the preload users. Unfortunately, this allowed/expected-to-fail kmem_cache allocation ends up generating spurious slab lowmem warning before succeeding the request from the preload buffer. This patch makes idr_layer_alloc() add __GFP_NOWARN to the first kmem_cache attempt and try kmem_cache again w/o __GFP_NOWARN after allocation from preload_buffer fails so that lowmem warning is generated if not suppressed by the original @gfp_mask. Signed-off-by: Tejun Heo Reported-by: David Teigland Tested-by: David Teigland Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/idr.c | 38 +++++++++++++++++++++++++------------- 1 file changed, 25 insertions(+), 13 deletions(-) diff --git a/lib/idr.c b/lib/idr.c index c6fb829..322e281 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -106,8 +106,14 @@ static struct idr_layer *idr_layer_alloc(gfp_t gfp_mask, struct idr *layer_idr) if (layer_idr) return get_from_free_list(layer_idr); - /* try to allocate directly from kmem_cache */ - new = kmem_cache_zalloc(idr_layer_cache, gfp_mask); + /* + * Try to allocate directly from kmem_cache. We want to try this + * before preload buffer; otherwise, non-preloading idr_alloc() + * users will end up taking advantage of preloading ones. As the + * following is allowed to fail for preloaded cases, suppress + * warning this time. + */ + new = kmem_cache_zalloc(idr_layer_cache, gfp_mask | __GFP_NOWARN); if (new) return new; @@ -115,18 +121,24 @@ static struct idr_layer *idr_layer_alloc(gfp_t gfp_mask, struct idr *layer_idr) * Try to fetch one from the per-cpu preload buffer if in process * context. See idr_preload() for details. */ - if (in_interrupt()) - return NULL; - - preempt_disable(); - new = __this_cpu_read(idr_preload_head); - if (new) { - __this_cpu_write(idr_preload_head, new->ary[0]); - __this_cpu_dec(idr_preload_cnt); - new->ary[0] = NULL; + if (!in_interrupt()) { + preempt_disable(); + new = __this_cpu_read(idr_preload_head); + if (new) { + __this_cpu_write(idr_preload_head, new->ary[0]); + __this_cpu_dec(idr_preload_cnt); + new->ary[0] = NULL; + } + preempt_enable(); + if (new) + return new; } - preempt_enable(); - return new; + + /* + * Both failed. Try kmem_cache again w/o adding __GFP_NOWARN so + * that memory allocation failure warning is printed as intended. + */ + return kmem_cache_zalloc(idr_layer_cache, gfp_mask); } static void idr_layer_rcu_free(struct rcu_head *head) -- cgit v1.1 From 9d1400cf79afb49584b4873eb22cd5130cb341db Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 26 Feb 2013 07:46:24 +0100 Subject: ARM: DMA-mapping: add missing GFP_DMA flag for atomic buffer allocation Atomic pool should always be allocated from DMA zone if such zone is available in the system to avoid issues caused by limited dma mask of any of the devices used for making an atomic allocation. Reported-by: Krzysztof Halasa Signed-off-by: Marek Szyprowski Cc: Stable [v3.6+] --- arch/arm/mm/dma-mapping.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index c7e3759..e9db6b4 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -342,6 +342,7 @@ static int __init atomic_pool_init(void) { struct dma_pool *pool = &atomic_pool; pgprot_t prot = pgprot_dmacoherent(pgprot_kernel); + gfp_t gfp = GFP_KERNEL | GFP_DMA; unsigned long nr_pages = pool->size >> PAGE_SHIFT; unsigned long *bitmap; struct page *page; @@ -361,8 +362,8 @@ static int __init atomic_pool_init(void) ptr = __alloc_from_contiguous(NULL, pool->size, prot, &page, atomic_pool_init); else - ptr = __alloc_remap_buffer(NULL, pool->size, GFP_KERNEL, prot, - &page, atomic_pool_init); + ptr = __alloc_remap_buffer(NULL, pool->size, gfp, prot, &page, + atomic_pool_init); if (ptr) { int i; -- cgit v1.1 From 647f8d94a4e69d39e88a617846755655853c20f5 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Fri, 8 Mar 2013 16:18:21 +0100 Subject: ARM: at91: add gpio suspend/resume support when using pinctrl gpio suspend/resume and wakeup sources where not managed when using pinctrl so it was impossible to wake up the system with a gpio. Signed-off-by: Ludovic Desroches Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Linus Walleij Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/include/mach/gpio.h | 8 +++++ arch/arm/mach-at91/pm.c | 10 ++++-- drivers/pinctrl/pinctrl-at91.c | 61 +++++++++++++++++++++++++++++++++- 3 files changed, 76 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-at91/include/mach/gpio.h b/arch/arm/mach-at91/include/mach/gpio.h index eed465a..5fc2377 100644 --- a/arch/arm/mach-at91/include/mach/gpio.h +++ b/arch/arm/mach-at91/include/mach/gpio.h @@ -209,6 +209,14 @@ extern int at91_get_gpio_value(unsigned pin); extern void at91_gpio_suspend(void); extern void at91_gpio_resume(void); +#ifdef CONFIG_PINCTRL_AT91 +extern void at91_pinctrl_gpio_suspend(void); +extern void at91_pinctrl_gpio_resume(void); +#else +static inline void at91_pinctrl_gpio_suspend(void) {} +static inline void at91_pinctrl_gpio_resume(void) {} +#endif + #endif /* __ASSEMBLY__ */ #endif diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index adb6db8..73f1f25 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -201,7 +201,10 @@ extern u32 at91_slow_clock_sz; static int at91_pm_enter(suspend_state_t state) { - at91_gpio_suspend(); + if (of_have_populated_dt()) + at91_pinctrl_gpio_suspend(); + else + at91_gpio_suspend(); at91_irq_suspend(); pr_debug("AT91: PM - wake mask %08x, pm state %d\n", @@ -286,7 +289,10 @@ static int at91_pm_enter(suspend_state_t state) error: target_state = PM_SUSPEND_ON; at91_irq_resume(); - at91_gpio_resume(); + if (of_have_populated_dt()) + at91_pinctrl_gpio_resume(); + else + at91_gpio_resume(); return 0; } diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index 75933a6..efb7f10 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -1277,21 +1277,80 @@ static int alt_gpio_irq_type(struct irq_data *d, unsigned type) } #ifdef CONFIG_PM + +static u32 wakeups[MAX_GPIO_BANKS]; +static u32 backups[MAX_GPIO_BANKS]; + static int gpio_irq_set_wake(struct irq_data *d, unsigned state) { struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d); unsigned bank = at91_gpio->pioc_idx; + unsigned mask = 1 << d->hwirq; if (unlikely(bank >= MAX_GPIO_BANKS)) return -EINVAL; + if (state) + wakeups[bank] |= mask; + else + wakeups[bank] &= ~mask; + irq_set_irq_wake(at91_gpio->pioc_virq, state); return 0; } + +void at91_pinctrl_gpio_suspend(void) +{ + int i; + + for (i = 0; i < gpio_banks; i++) { + void __iomem *pio; + + if (!gpio_chips[i]) + continue; + + pio = gpio_chips[i]->regbase; + + backups[i] = __raw_readl(pio + PIO_IMR); + __raw_writel(backups[i], pio + PIO_IDR); + __raw_writel(wakeups[i], pio + PIO_IER); + + if (!wakeups[i]) { + clk_unprepare(gpio_chips[i]->clock); + clk_disable(gpio_chips[i]->clock); + } else { + printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", + 'A'+i, wakeups[i]); + } + } +} + +void at91_pinctrl_gpio_resume(void) +{ + int i; + + for (i = 0; i < gpio_banks; i++) { + void __iomem *pio; + + if (!gpio_chips[i]) + continue; + + pio = gpio_chips[i]->regbase; + + if (!wakeups[i]) { + if (clk_prepare(gpio_chips[i]->clock) == 0) + clk_enable(gpio_chips[i]->clock); + } + + __raw_writel(wakeups[i], pio + PIO_IDR); + __raw_writel(backups[i], pio + PIO_IER); + } +} + #else #define gpio_irq_set_wake NULL -#endif +#endif /* CONFIG_PM */ static struct irq_chip gpio_irqchip = { .name = "GPIO", -- cgit v1.1 From 0ed66befaae893e82c9f016238282d73ef9fd6c7 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Fri, 8 Mar 2013 16:13:57 +0100 Subject: ARM: at91: fix infinite loop in at91_irq_suspend/resume Fix an infinite loop when suspending or resuming a device with AIC5. Signed-off-by: Ludovic Desroches Acked-by: Jean-Christophe PLAGNIOL-VILLARD Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/irq.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/arch/arm/mach-at91/irq.c b/arch/arm/mach-at91/irq.c index 8e21026..e0ca591 100644 --- a/arch/arm/mach-at91/irq.c +++ b/arch/arm/mach-at91/irq.c @@ -92,23 +92,21 @@ static int at91_aic_set_wake(struct irq_data *d, unsigned value) void at91_irq_suspend(void) { - int i = 0, bit; + int bit = -1; if (has_aic5()) { /* disable enabled irqs */ - while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) { + while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) { at91_aic_write(AT91_AIC5_SSR, bit & AT91_AIC5_INTSEL_MSK); at91_aic_write(AT91_AIC5_IDCR, 1); - i = bit; } /* enable wakeup irqs */ - i = 0; - while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) { + bit = -1; + while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) { at91_aic_write(AT91_AIC5_SSR, bit & AT91_AIC5_INTSEL_MSK); at91_aic_write(AT91_AIC5_IECR, 1); - i = bit; } } else { at91_aic_write(AT91_AIC_IDCR, *backups); @@ -118,23 +116,21 @@ void at91_irq_suspend(void) void at91_irq_resume(void) { - int i = 0, bit; + int bit = -1; if (has_aic5()) { /* disable wakeup irqs */ - while ((bit = find_next_bit(wakeups, n_irqs, i)) < n_irqs) { + while ((bit = find_next_bit(wakeups, n_irqs, bit + 1)) < n_irqs) { at91_aic_write(AT91_AIC5_SSR, bit & AT91_AIC5_INTSEL_MSK); at91_aic_write(AT91_AIC5_IDCR, 1); - i = bit; } /* enable irqs disabled for suspend */ - i = 0; - while ((bit = find_next_bit(backups, n_irqs, i)) < n_irqs) { + bit = -1; + while ((bit = find_next_bit(backups, n_irqs, bit + 1)) < n_irqs) { at91_aic_write(AT91_AIC5_SSR, bit & AT91_AIC5_INTSEL_MSK); at91_aic_write(AT91_AIC5_IECR, 1); - i = bit; } } else { at91_aic_write(AT91_AIC_IDCR, *wakeups); -- cgit v1.1 From db9e51617faad3a54d10b7cb340a82688ec0232d Mon Sep 17 00:00:00 2001 From: Mikhail Kshevetskiy Date: Thu, 14 Mar 2013 10:18:29 +0100 Subject: usb: musb: da8xx: Fix build breakage due to typo Commit 032ec49f5351e9cb242b1a1c367d14415043ab95 (usb: musb: drop useless board_mode usage) introduced a typo that breaks the build. Signed-off-by: Mikhail Kshevetskiy [ Fixed commit message ] Cc: Mikhail Kshevetskiy Cc: Sergei Shtylyov Cc: Greg Kroah-Hartman Cc: stable@vger.kernel.org Signed-off-by: Michael Riesch Signed-off-by: Felipe Balbi --- drivers/usb/musb/da8xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 7c71769d..41613a2 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -327,7 +327,7 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci) u8 devctl = musb_readb(mregs, MUSB_DEVCTL); int err; - err = musb->int_usb & USB_INTR_VBUSERROR; + err = musb->int_usb & MUSB_INTR_VBUSERROR; if (err) { /* * The Mentor core doesn't debounce VBUS as needed -- cgit v1.1 From 273daf2f2ab9f42d82f017b20fcf902ec8d7cffa Mon Sep 17 00:00:00 2001 From: Bo Shen Date: Wed, 13 Mar 2013 16:54:07 +0800 Subject: usb: gadget: u_serial: fix typo which cause build warning fix typo error introduced by commit ea0e6276 (usb: gadget: add multiple definition guards) which causes the following build warning: warning: "pr_vdebug" redefined Signed-off-by: Bo Shen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/u_serial.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c index c5034d9..b369292 100644 --- a/drivers/usb/gadget/u_serial.c +++ b/drivers/usb/gadget/u_serial.c @@ -136,7 +136,7 @@ static struct portmaster { pr_debug(fmt, ##arg) #endif /* pr_vdebug */ #else -#ifndef pr_vdebig +#ifndef pr_vdebug #define pr_vdebug(fmt, arg...) \ ({ if (0) pr_debug(fmt, ##arg); }) #endif /* pr_vdebug */ -- cgit v1.1 From d1398ccfec56e54010476efd6a316427d29045a6 Mon Sep 17 00:00:00 2001 From: Vinson Lee Date: Wed, 13 Mar 2013 15:34:24 -0700 Subject: perf tools: Fix LIBNUMA build with glibc 2.12 and older. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The tokens MADV_HUGEPAGE and MADV_NOHUGEPAGE are not available with glibc 2.12 and older. Define these tokens if they are not already defined. This patch fixes these build errors with older versions of glibc. CC bench/numa.o bench/numa.c: In function ‘alloc_data’: bench/numa.c:334: error: ‘MADV_HUGEPAGE’ undeclared (first use in this function) bench/numa.c:334: error: (Each undeclared identifier is reported only once bench/numa.c:334: error: for each function it appears in.) bench/numa.c:341: error: ‘MADV_NOHUGEPAGE’ undeclared (first use in this function) make: *** [bench/numa.o] Error 1 Signed-off-by: Vinson Lee Acked-by: Ingo Molnar Cc: Ingo Molnar Cc: Irina Tirdea Cc: Paul Mackerras Cc: Pekka Enberg Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1363214064-4671-2-git-send-email-vlee@twitter.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/bench/bench.h | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/tools/perf/bench/bench.h b/tools/perf/bench/bench.h index a5223e6..0fdc852 100644 --- a/tools/perf/bench/bench.h +++ b/tools/perf/bench/bench.h @@ -1,6 +1,30 @@ #ifndef BENCH_H #define BENCH_H +/* + * The madvise transparent hugepage constants were added in glibc + * 2.13. For compatibility with older versions of glibc, define these + * tokens if they are not already defined. + * + * PA-RISC uses different madvise values from other architectures and + * needs to be special-cased. + */ +#ifdef __hppa__ +# ifndef MADV_HUGEPAGE +# define MADV_HUGEPAGE 67 +# endif +# ifndef MADV_NOHUGEPAGE +# define MADV_NOHUGEPAGE 68 +# endif +#else +# ifndef MADV_HUGEPAGE +# define MADV_HUGEPAGE 14 +# endif +# ifndef MADV_NOHUGEPAGE +# define MADV_NOHUGEPAGE 15 +# endif +#endif + extern int bench_numa(int argc, const char **argv, const char *prefix); extern int bench_sched_messaging(int argc, const char **argv, const char *prefix); extern int bench_sched_pipe(int argc, const char **argv, const char *prefix); -- cgit v1.1 From 42b84328428bfe305fcb60eb382fba60cee9071f Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Thu, 14 Mar 2013 12:52:05 +0100 Subject: ARM: i.MX25: Fix DT compilation The i.MX25 DT machine descriptor calls a non existing imx25_timer_init() function. This patch adds it to fix compilation. Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/imx25-dt.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm/mach-imx/imx25-dt.c b/arch/arm/mach-imx/imx25-dt.c index 03b65e5..8234839 100644 --- a/arch/arm/mach-imx/imx25-dt.c +++ b/arch/arm/mach-imx/imx25-dt.c @@ -27,6 +27,11 @@ static const char * const imx25_dt_board_compat[] __initconst = { NULL }; +static void __init imx25_timer_init(void) +{ + mx25_clocks_init_dt(); +} + DT_MACHINE_START(IMX25_DT, "Freescale i.MX25 (Device Tree Support)") .map_io = mx25_map_io, .init_early = imx25_init_early, -- cgit v1.1 From 5bc7c33ca93a285dcfe7b7fd64970f6314440ad1 Mon Sep 17 00:00:00 2001 From: Brian Norris Date: Wed, 13 Mar 2013 09:51:31 -0700 Subject: mtd: nand: reintroduce NAND_NO_READRDY as NAND_NEED_READRDY This partially reverts commit 1696e6bc2ae83734e64e206ac99766ea19e9a14e ("mtd: nand: kill NAND_NO_READRDY"). In that patch I overlooked a few things. The original documentation for NAND_NO_READRDY included "True for all large page devices, as they do not support autoincrement." I was conflating "not support autoincrement" with the NAND_NO_AUTOINCR option, which was in fact doing nothing. So, when I dropped NAND_NO_AUTOINCR, I concluded that I then could harmlessly drop NAND_NO_READRDY. But of course the fact the NAND_NO_AUTOINCR was doing nothing didn't mean NAND_NO_READRDY was doing nothing... So, NAND_NO_READRDY is re-introduced as NAND_NEED_READRDY and applied only to those few remaining small-page NAND which needed it in the first place. Cc: stable@kernel.org [3.5+] Reported-by: Alexander Shiyan Tested-by: Alexander Shiyan Signed-off-by: Brian Norris Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 16 +++++++++ drivers/mtd/nand/nand_ids.c | 80 +++++++++++++++++++++++--------------------- include/linux/mtd/nand.h | 7 ++++ 3 files changed, 64 insertions(+), 39 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 4321415..42c6392 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1523,6 +1523,14 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from, oobreadlen -= toread; } } + + if (chip->options & NAND_NEED_READRDY) { + /* Apply delay or wait for ready/busy pin */ + if (!chip->dev_ready) + udelay(chip->chip_delay); + else + nand_wait_ready(mtd); + } } else { memcpy(buf, chip->buffers->databuf + col, bytes); buf += bytes; @@ -1787,6 +1795,14 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, len = min(len, readlen); buf = nand_transfer_oob(chip, buf, ops, len); + if (chip->options & NAND_NEED_READRDY) { + /* Apply delay or wait for ready/busy pin */ + if (!chip->dev_ready) + udelay(chip->chip_delay); + else + nand_wait_ready(mtd); + } + readlen -= len; if (!readlen) break; diff --git a/drivers/mtd/nand/nand_ids.c b/drivers/mtd/nand/nand_ids.c index e3aa274..9c61238 100644 --- a/drivers/mtd/nand/nand_ids.c +++ b/drivers/mtd/nand/nand_ids.c @@ -22,49 +22,51 @@ * 512 512 Byte page size */ struct nand_flash_dev nand_flash_ids[] = { +#define SP_OPTIONS NAND_NEED_READRDY +#define SP_OPTIONS16 (SP_OPTIONS | NAND_BUSWIDTH_16) #ifdef CONFIG_MTD_NAND_MUSEUM_IDS - {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0}, - {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0}, - {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0}, - {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0}, - {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0}, - {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0}, - {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0}, - {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0}, - - {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0}, - {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0}, - {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16}, - {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16}, + {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, SP_OPTIONS}, + {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, SP_OPTIONS}, + {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, SP_OPTIONS}, + {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, SP_OPTIONS}, + {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, SP_OPTIONS}, + {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, SP_OPTIONS}, + {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, SP_OPTIONS}, + {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, SP_OPTIONS}, + {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, SP_OPTIONS}, + {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, SP_OPTIONS}, + + {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, SP_OPTIONS}, + {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, SP_OPTIONS}, + {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, SP_OPTIONS16}, + {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, SP_OPTIONS16}, #endif - {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0}, - {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0}, - {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0}, - {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0}, - {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0}, - {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0}, - {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0}, - {"NAND 128MiB 1,8V 8-bit", 0x39, 512, 128, 0x4000, 0}, - {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0}, - {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - {"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16}, - - {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0}, + {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, SP_OPTIONS}, + {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, SP_OPTIONS}, + {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, SP_OPTIONS16}, + {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, SP_OPTIONS16}, + + {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, SP_OPTIONS}, + {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, SP_OPTIONS}, + {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, SP_OPTIONS16}, + {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, SP_OPTIONS16}, + + {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, SP_OPTIONS}, + {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, SP_OPTIONS}, + {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, SP_OPTIONS16}, + {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, SP_OPTIONS16}, + + {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, SP_OPTIONS}, + {"NAND 128MiB 1,8V 8-bit", 0x39, 512, 128, 0x4000, SP_OPTIONS}, + {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, SP_OPTIONS}, + {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, SP_OPTIONS16}, + {"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, SP_OPTIONS16}, + {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, SP_OPTIONS16}, + {"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, SP_OPTIONS16}, + + {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, SP_OPTIONS}, /* * These are the new chips with large page size. The pagesize and the diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h index 7ccb3c5..ef52d9c 100644 --- a/include/linux/mtd/nand.h +++ b/include/linux/mtd/nand.h @@ -187,6 +187,13 @@ typedef enum { * This happens with the Renesas AG-AND chips, possibly others. */ #define BBT_AUTO_REFRESH 0x00000080 +/* + * Chip requires ready check on read (for auto-incremented sequential read). + * True only for small page devices; large page devices do not support + * autoincrement. + */ +#define NAND_NEED_READRDY 0x00000100 + /* Chip does not allow subpage writes */ #define NAND_NO_SUBPAGE_WRITE 0x00000200 -- cgit v1.1 From df069079c153d22adf6c28dcc0b1cf62bba75167 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Thu, 14 Mar 2013 16:27:18 +0800 Subject: hwmon: (lineage-pem) Add missing terminating entry for pem_[input|fan]_attributes Signed-off-by: Axel Lin Cc: stable@vger.kernel.org Acked-by: Jean Delvare Signed-off-by: Guenter Roeck --- drivers/hwmon/lineage-pem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwmon/lineage-pem.c b/drivers/hwmon/lineage-pem.c index 41df29f..ebbb9f4 100644 --- a/drivers/hwmon/lineage-pem.c +++ b/drivers/hwmon/lineage-pem.c @@ -422,6 +422,7 @@ static struct attribute *pem_input_attributes[] = { &sensor_dev_attr_in2_input.dev_attr.attr, &sensor_dev_attr_curr1_input.dev_attr.attr, &sensor_dev_attr_power1_input.dev_attr.attr, + NULL }; static const struct attribute_group pem_input_group = { @@ -432,6 +433,7 @@ static struct attribute *pem_fan_attributes[] = { &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan3_input.dev_attr.attr, + NULL }; static const struct attribute_group pem_fan_group = { -- cgit v1.1 From 6975404fb9bcc3ca41946ce0506f97db30fb8705 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Thu, 14 Mar 2013 13:30:20 +0000 Subject: hwmon: (pmbus) Fix krealloc() misuse in pmbus_add_attribute() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit If krealloc() returns NULL, it *doesn't* free the original. So any code of the form 'foo = krealloc(foo, …);' is almost certainly a bug. Signed-off-by: David Woodhouse Signed-off-by: Guenter Roeck --- drivers/hwmon/pmbus/pmbus_core.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 80eef50..9add6092 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -766,12 +766,14 @@ static ssize_t pmbus_show_label(struct device *dev, static int pmbus_add_attribute(struct pmbus_data *data, struct attribute *attr) { if (data->num_attributes >= data->max_attributes - 1) { - data->max_attributes += PMBUS_ATTR_ALLOC_SIZE; - data->group.attrs = krealloc(data->group.attrs, - sizeof(struct attribute *) * - data->max_attributes, GFP_KERNEL); - if (data->group.attrs == NULL) + int new_max_attrs = data->max_attributes + PMBUS_ATTR_ALLOC_SIZE; + void *new_attrs = krealloc(data->group.attrs, + new_max_attrs * sizeof(void *), + GFP_KERNEL); + if (!new_attrs) return -ENOMEM; + data->group.attrs = new_attrs; + data->max_attributes = new_max_attrs; } data->group.attrs[data->num_attributes++] = attr; -- cgit v1.1 From 303985f81019571db0b3a6f01fc7f03eb350657e Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Thu, 14 Mar 2013 15:28:29 +0100 Subject: ALSA: hda - Disable IDT eapd_switch if there are no internal speakers If there are no internal speakers, we should not turn the eapd switch off, because it might be necessary to keep high for Headphone. BugLink: https://bugs.launchpad.net/bugs/1155016 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_sigmatel.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 83d5335..dafe04a 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -815,6 +815,29 @@ static int find_mute_led_cfg(struct hda_codec *codec, int default_polarity) return 0; } +/* check whether a built-in speaker is included in parsed pins */ +static bool has_builtin_speaker(struct hda_codec *codec) +{ + struct sigmatel_spec *spec = codec->spec; + hda_nid_t *nid_pin; + int nids, i; + + if (spec->gen.autocfg.line_out_type == AUTO_PIN_SPEAKER_OUT) { + nid_pin = spec->gen.autocfg.line_out_pins; + nids = spec->gen.autocfg.line_outs; + } else { + nid_pin = spec->gen.autocfg.speaker_pins; + nids = spec->gen.autocfg.speaker_outs; + } + + for (i = 0; i < nids; i++) { + unsigned int def_conf = snd_hda_codec_get_pincfg(codec, nid_pin[i]); + if (snd_hda_get_input_pin_attr(def_conf) == INPUT_PIN_ATTR_INT) + return true; + } + return false; +} + /* * PC beep controls */ @@ -3890,6 +3913,12 @@ static int patch_stac92hd73xx(struct hda_codec *codec) return err; } + /* Don't GPIO-mute speakers if there are no internal speakers, because + * the GPIO might be necessary for Headphone + */ + if (spec->eapd_switch && !has_builtin_speaker(codec)) + spec->eapd_switch = 0; + codec->proc_widget_hook = stac92hd7x_proc_hook; snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PROBE); -- cgit v1.1 From 16fad69cfe4adbbfa813de516757b87bcae36d93 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 14 Mar 2013 05:40:32 +0000 Subject: tcp: fix skb_availroom() Chrome OS team reported a crash on a Pixel ChromeBook in TCP stack : https://code.google.com/p/chromium/issues/detail?id=182056 commit a21d45726acac (tcp: avoid order-1 allocations on wifi and tx path) did a poor choice adding an 'avail_size' field to skb, while what we really needed was a 'reserved_tailroom' one. It would have avoided commit 22b4a4f22da (tcp: fix retransmit of partially acked frames) and this commit. Crash occurs because skb_split() is not aware of the 'avail_size' management (and should not be aware) Signed-off-by: Eric Dumazet Reported-by: Mukesh Agrawal Signed-off-by: David S. Miller --- include/linux/skbuff.h | 7 +++++-- net/ipv4/tcp.c | 2 +- net/ipv4/tcp_output.c | 1 - 3 files changed, 6 insertions(+), 4 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 821c7f4..6f2bb86 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -500,7 +500,7 @@ struct sk_buff { union { __u32 mark; __u32 dropcount; - __u32 avail_size; + __u32 reserved_tailroom; }; sk_buff_data_t inner_transport_header; @@ -1447,7 +1447,10 @@ static inline int skb_tailroom(const struct sk_buff *skb) */ static inline int skb_availroom(const struct sk_buff *skb) { - return skb_is_nonlinear(skb) ? 0 : skb->avail_size - skb->len; + if (skb_is_nonlinear(skb)) + return 0; + + return skb->end - skb->tail - skb->reserved_tailroom; } /** diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 47e854f..e220207 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -775,7 +775,7 @@ struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp) * Make sure that we have exactly size bytes * available to the caller, no more, no less. */ - skb->avail_size = size; + skb->reserved_tailroom = skb->end - skb->tail - size; return skb; } __kfree_skb(skb); diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index e2b4461..817fbb3 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1298,7 +1298,6 @@ static void __pskb_trim_head(struct sk_buff *skb, int len) eat = min_t(int, len, skb_headlen(skb)); if (eat) { __skb_pull(skb, eat); - skb->avail_size -= eat; len -= eat; if (!len) return; -- cgit v1.1 From cca7af3889bfa343d33d5e657a38d876abd10e58 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Thu, 14 Mar 2013 03:29:40 +0000 Subject: skb: Propagate pfmemalloc on skb from head page only Hi. I'm trying to send big chunks of memory from application address space via TCP socket using vmsplice + splice like this mem = mmap(128Mb); vmsplice(pipe[1], mem); /* splice memory into pipe */ splice(pipe[0], tcp_socket); /* send it into network */ When I'm lucky and a huge page splices into the pipe and then into the socket _and_ client and server ends of the TCP connection are on the same host, communicating via lo, the whole connection gets stuck! The sending queue becomes full and app stops writing/splicing more into it, but the receiving queue remains empty, and that's why. The __skb_fill_page_desc observes a tail page of a huge page and erroneously propagates its page->pfmemalloc value onto socket (the pfmemalloc on tail pages contain garbage). Then this skb->pfmemalloc leaks through lo and due to the tcp_v4_rcv sk_filter if (skb->pfmemalloc && !sock_flag(sk, SOCK_MEMALLOC)) /* true */ return -ENOMEM goto release_and_discard; no packets reach the socket. Even TCP re-transmits are dropped by this, as skb cloning clones the pfmemalloc flag as well. That said, here's the proper page->pfmemalloc propagation onto socket: we must check the huge-page's head page only, other pages' pfmemalloc and mapping values do not contain what is expected in this place. However, I'm not sure whether this fix is _complete_, since pfmemalloc propagation via lo also oesn't look great. Both, bit propagation from page to skb and this check in sk_filter, were introduced by c48a11c7 (netvm: propagate page->pfmemalloc to skb), in v3.5 so Mel and stable@ are in Cc. Signed-off-by: Pavel Emelyanov Acked-by: Eric Dumazet Acked-by: Mel Gorman Signed-off-by: David S. Miller --- include/linux/skbuff.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 6f2bb86..441f5bf 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1288,11 +1288,13 @@ static inline void __skb_fill_page_desc(struct sk_buff *skb, int i, * do not lose pfmemalloc information as the pages would not be * allocated using __GFP_MEMALLOC. */ - if (page->pfmemalloc && !page->mapping) - skb->pfmemalloc = true; frag->page.p = page; frag->page_offset = off; skb_frag_size_set(frag, size); + + page = compound_head(page); + if (page->pfmemalloc && !page->mapping) + skb->pfmemalloc = true; } /** -- cgit v1.1 From 8c958c703ef8804093437959221951eaf0e1e664 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Thu, 21 Feb 2013 10:27:54 -0800 Subject: hwmon: (pmbus/ltc2978) Fix temperature reporting On LTC2978, only READ_TEMPERATURE is supported. It reports the internal junction temperature. This register is unpaged. On LTC3880, READ_TEMPERATURE and READ_TEMPERATURE2 are supported. READ_TEMPERATURE is paged and reports external temperatures. READ_TEMPERATURE2 is unpaged and reports the internal junction temperature. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.2+ Acked-by: Jean Delvare --- drivers/hwmon/pmbus/ltc2978.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index a58de38..6d61307 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -59,7 +59,7 @@ enum chips { ltc2978, ltc3880 }; struct ltc2978_data { enum chips id; int vin_min, vin_max; - int temp_min, temp_max; + int temp_min, temp_max[2]; int vout_min[8], vout_max[8]; int iout_max[2]; int temp2_max; @@ -113,9 +113,10 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, ret = pmbus_read_word_data(client, page, LTC2978_MFR_TEMPERATURE_PEAK); if (ret >= 0) { - if (lin11_to_val(ret) > lin11_to_val(data->temp_max)) - data->temp_max = ret; - ret = data->temp_max; + if (lin11_to_val(ret) + > lin11_to_val(data->temp_max[page])) + data->temp_max[page] = ret; + ret = data->temp_max[page]; } break; case PMBUS_VIRT_RESET_VOUT_HISTORY: @@ -266,7 +267,7 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, break; case PMBUS_VIRT_RESET_TEMP_HISTORY: data->temp_min = 0x7bff; - data->temp_max = 0x7c00; + data->temp_max[page] = 0x7c00; ret = ltc2978_clear_peaks(client, page, data->id); break; default: @@ -323,7 +324,8 @@ static int ltc2978_probe(struct i2c_client *client, data->vin_min = 0x7bff; data->vin_max = 0x7c00; data->temp_min = 0x7bff; - data->temp_max = 0x7c00; + for (i = 0; i < ARRAY_SIZE(data->temp_max); i++) + data->temp_max[i] = 0x7c00; data->temp2_max = 0x7c00; switch (data->id) { -- cgit v1.1 From eb20ff9c91ddcb2d55c1849a87d3db85af5e88a9 Mon Sep 17 00:00:00 2001 From: Vinicius Costa Gomes Date: Wed, 13 Mar 2013 19:46:20 -0300 Subject: Bluetooth: Fix not closing SCO sockets in the BT_CONNECT2 state With deferred setup for SCO, it is possible that userspace closes the socket when it is in the BT_CONNECT2 state, after the Connect Request is received but before the Accept Synchonous Connection is sent. If this happens the following crash was observed, when the connection is terminated: [ +0.000003] hci_sync_conn_complete_evt: hci0 status 0x10 [ +0.000005] sco_connect_cfm: hcon ffff88003d1bd800 bdaddr 40:98:4e:32:d7:39 status 16 [ +0.000003] sco_conn_del: hcon ffff88003d1bd800 conn ffff88003cc8e300, err 110 [ +0.000015] BUG: unable to handle kernel NULL pointer dereference at 0000000000000199 [ +0.000906] IP: [] __lock_acquire+0xed/0xe82 [ +0.000000] PGD 3d21f067 PUD 3d291067 PMD 0 [ +0.000000] Oops: 0002 [#1] SMP [ +0.000000] Modules linked in: rfcomm bnep btusb bluetooth [ +0.000000] CPU 0 [ +0.000000] Pid: 1481, comm: kworker/u:2H Not tainted 3.9.0-rc1-25019-gad82cdd #1 Bochs Bochs [ +0.000000] RIP: 0010:[] [] __lock_acquire+0xed/0xe82 [ +0.000000] RSP: 0018:ffff88003c3c19d8 EFLAGS: 00010002 [ +0.000000] RAX: 0000000000000001 RBX: 0000000000000246 RCX: 0000000000000000 [ +0.000000] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88003d1be868 [ +0.000000] RBP: ffff88003c3c1a98 R08: 0000000000000002 R09: 0000000000000000 [ +0.000000] R10: ffff88003d1be868 R11: ffff88003e20b000 R12: 0000000000000002 [ +0.000000] R13: ffff88003aaa8000 R14: 000000000000006e R15: ffff88003d1be850 [ +0.000000] FS: 0000000000000000(0000) GS:ffff88003e200000(0000) knlGS:0000000000000000 [ +0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ +0.000000] CR2: 0000000000000199 CR3: 000000003c1cb000 CR4: 00000000000006b0 [ +0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ +0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ +0.000000] Process kworker/u:2H (pid: 1481, threadinfo ffff88003c3c0000, task ffff88003aaa8000) [ +0.000000] Stack: [ +0.000000] ffffffff81b16342 0000000000000000 0000000000000000 ffff88003d1be868 [ +0.000000] ffffffff00000000 00018c0c7863e367 000000003c3c1a28 ffffffff8101efbd [ +0.000000] 0000000000000000 ffff88003e3d2400 ffff88003c3c1a38 ffffffff81007c7a [ +0.000000] Call Trace: [ +0.000000] [] ? kvm_clock_read+0x34/0x3b [ +0.000000] [] ? paravirt_sched_clock+0x9/0xd [ +0.000000] [] ? sched_clock+0x9/0xb [ +0.000000] [] ? sched_clock_local+0x12/0x75 [ +0.000000] [] lock_acquire+0x93/0xb1 [ +0.000000] [] ? spin_lock+0x9/0xb [bluetooth] [ +0.000000] [] ? lock_release_holdtime.part.22+0x4e/0x55 [ +0.000000] [] _raw_spin_lock+0x40/0x74 [ +0.000000] [] ? spin_lock+0x9/0xb [bluetooth] [ +0.000000] [] ? _raw_spin_unlock+0x23/0x36 [ +0.000000] [] spin_lock+0x9/0xb [bluetooth] [ +0.000000] [] sco_conn_del+0x76/0xbb [bluetooth] [ +0.000000] [] sco_connect_cfm+0x2da/0x2e9 [bluetooth] [ +0.000000] [] hci_proto_connect_cfm+0x38/0x65 [bluetooth] [ +0.000000] [] hci_sync_conn_complete_evt.isra.79+0x11a/0x13e [bluetooth] [ +0.000000] [] hci_event_packet+0x153b/0x239d [bluetooth] [ +0.000000] [] ? _raw_spin_unlock_irqrestore+0x48/0x5c [ +0.000000] [] hci_rx_work+0xf3/0x2e3 [bluetooth] [ +0.000000] [] process_one_work+0x1dc/0x30b [ +0.000000] [] ? process_one_work+0x172/0x30b [ +0.000000] [] ? spin_lock_irq+0x9/0xb [ +0.000000] [] worker_thread+0x123/0x1d2 [ +0.000000] [] ? manage_workers+0x240/0x240 [ +0.000000] [] kthread+0x9d/0xa5 [ +0.000000] [] ? __kthread_parkme+0x60/0x60 [ +0.000000] [] ret_from_fork+0x7c/0xb0 [ +0.000000] [] ? __kthread_parkme+0x60/0x60 [ +0.000000] Code: d7 44 89 8d 50 ff ff ff 4c 89 95 58 ff ff ff e8 44 fc ff ff 44 8b 8d 50 ff ff ff 48 85 c0 4c 8b 95 58 ff ff ff 0f 84 7a 04 00 00 ff 80 98 01 00 00 83 3d 25 41 a7 00 00 45 8b b5 e8 05 00 00 [ +0.000000] RIP [] __lock_acquire+0xed/0xe82 [ +0.000000] RSP [ +0.000000] CR2: 0000000000000199 [ +0.000000] ---[ end trace e73cd3b52352dd34 ]--- Cc: stable@vger.kernel.org [3.8] Signed-off-by: Vinicius Costa Gomes Tested-by: Frederic Dalleau Signed-off-by: Gustavo Padovan --- net/bluetooth/sco.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 57f250c..aaf1957 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -361,6 +361,7 @@ static void __sco_sock_close(struct sock *sk) sco_chan_del(sk, ECONNRESET); break; + case BT_CONNECT2: case BT_CONNECT: case BT_DISCONN: sco_chan_del(sk, ECONNRESET); -- cgit v1.1 From 69d34da2984c95b33ea21518227e1f9470f11d95 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 14 Mar 2013 13:50:56 -0400 Subject: tracing: Protect tracer flags with trace_types_lock Seems that the tracer flags have never been protected from synchronous writes. Luckily, admins don't usually modify the tracing flags via two different tasks. But if scripts were to be used to modify them, then they could get corrupted. Move the trace_types_lock that protects against tracers changing to also protect the flags being set. Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 53df283..00daf5f 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2916,6 +2916,8 @@ static int trace_set_options(char *option) cmp += 2; } + mutex_lock(&trace_types_lock); + for (i = 0; trace_options[i]; i++) { if (strcmp(cmp, trace_options[i]) == 0) { set_tracer_flags(1 << i, !neg); @@ -2924,11 +2926,10 @@ static int trace_set_options(char *option) } /* If no option could be set, test the specific tracer options */ - if (!trace_options[i]) { - mutex_lock(&trace_types_lock); + if (!trace_options[i]) ret = set_tracer_option(current_trace, cmp, neg); - mutex_unlock(&trace_types_lock); - } + + mutex_unlock(&trace_types_lock); return ret; } @@ -4781,7 +4782,10 @@ trace_options_core_write(struct file *filp, const char __user *ubuf, size_t cnt, if (val != 0 && val != 1) return -EINVAL; + + mutex_lock(&trace_types_lock); set_tracer_flags(1 << index, val); + mutex_unlock(&trace_types_lock); *ppos += cnt; -- cgit v1.1 From a09a0a705dd6c80bc96b5e6f18dc103d4e1a7d63 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 11 Mar 2013 09:20:58 +0000 Subject: Btrfs: get better concurrency for snapshot-aware defrag work Using spinning case instead of blocking will result in better concurrency overall. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 13ab4de..1f268888 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2312,6 +2312,7 @@ again: key.type = BTRFS_EXTENT_DATA_KEY; key.offset = start; + path->leave_spinning = 1; if (merge) { struct btrfs_file_extent_item *fi; u64 extent_len; @@ -2368,6 +2369,7 @@ again: btrfs_mark_buffer_dirty(leaf); inode_add_bytes(inode, len); + btrfs_release_path(path); ret = btrfs_inc_extent_ref(trans, root, new->bytenr, new->disk_len, 0, @@ -2381,6 +2383,7 @@ again: ret = 1; out_free_path: btrfs_release_path(path); + path->leave_spinning = 0; btrfs_end_transaction(trans, root); out_unlock: unlock_extent_cached(&BTRFS_I(inode)->io_tree, lock_start, lock_end, -- cgit v1.1 From d340d2475c6e394013325f83f499594628a9e558 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 11 Mar 2013 09:37:45 +0000 Subject: Btrfs: remove btrfs_try_spin_lock Remove a useless function declaration Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/locking.h | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/btrfs/locking.h b/fs/btrfs/locking.h index ca52681..b81e0e9 100644 --- a/fs/btrfs/locking.h +++ b/fs/btrfs/locking.h @@ -26,7 +26,6 @@ void btrfs_tree_lock(struct extent_buffer *eb); void btrfs_tree_unlock(struct extent_buffer *eb); -int btrfs_try_spin_lock(struct extent_buffer *eb); void btrfs_tree_read_lock(struct extent_buffer *eb); void btrfs_tree_read_unlock(struct extent_buffer *eb); -- cgit v1.1 From bc178622d40d87e75abc131007342429c9b03351 Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Sat, 9 Mar 2013 15:18:39 +0000 Subject: btrfs: use rcu_barrier() to wait for bdev puts at unmount Doing this would reliably fail with -EBUSY for me: # mount /dev/sdb2 /mnt/scratch; umount /mnt/scratch; mkfs.btrfs -f /dev/sdb2 ... unable to open /dev/sdb2: Device or resource busy because mkfs.btrfs tries to open the device O_EXCL, and somebody still has it. Using systemtap to track bdev gets & puts shows a kworker thread doing a blkdev put after mkfs attempts a get; this is left over from the unmount path: btrfs_close_devices __btrfs_close_devices call_rcu(&device->rcu, free_device); free_device INIT_WORK(&device->rcu_work, __free_device); schedule_work(&device->rcu_work); so unmount might complete before __free_device fires & does its blkdev_put. Adding an rcu_barrier() to btrfs_close_devices() causes unmount to wait until all blkdev_put()s are done, and the device is truly free once unmount completes. Cc: stable@vger.kernel.org Signed-off-by: Eric Sandeen Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6b9cff4..5989a92 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -684,6 +684,12 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices) __btrfs_close_devices(fs_devices); free_fs_devices(fs_devices); } + /* + * Wait for rcu kworkers under __btrfs_close_devices + * to finish all blkdev_puts so device is really + * free when umount is done. + */ + rcu_barrier(); return ret; } -- cgit v1.1 From 492104c866cb1b62a11393adccb477f5cd2c7768 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 8 Mar 2013 15:41:02 -0500 Subject: Btrfs: return EIO if we have extent tree corruption The callers of lookup_inline_extent_info all handle getting an error back properly, so return an error if we have corruption instead of being a jerk and panicing. Still WARN_ON() since this is kind of crucial and I've been seeing it a bit too much recently for my taste, I think we're doing something wrong somewhere. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index aaee2b7..350b9b1 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -1467,8 +1467,11 @@ int lookup_inline_extent_backref(struct btrfs_trans_handle *trans, if (ret && !insert) { err = -ENOENT; goto out; + } else if (ret) { + err = -EIO; + WARN_ON(1); + goto out; } - BUG_ON(ret); /* Corruption */ leaf = path->nodes[0]; item_size = btrfs_item_size_nr(leaf, path->slots[0]); -- cgit v1.1 From 720f1e2060138855b4a1b1e8aa642f9c7feb6750 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Wed, 6 Mar 2013 11:51:47 +0000 Subject: Btrfs: return as soon as possible when edquot happens If one of qgroup fails to reserve firstly, we should return immediately, it is unnecessary to continue check. Signed-off-by: Wang Shilong Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/qgroup.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index aee4b1c..5471e47 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1525,21 +1525,23 @@ int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes) if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) && qg->reserved + qg->rfer + num_bytes > - qg->max_rfer) + qg->max_rfer) { ret = -EDQUOT; + goto out; + } if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) && qg->reserved + qg->excl + num_bytes > - qg->max_excl) + qg->max_excl) { ret = -EDQUOT; + goto out; + } list_for_each_entry(glist, &qg->groups, next_group) { ulist_add(ulist, glist->group->qgroupid, (uintptr_t)glist->group, GFP_ATOMIC); } } - if (ret) - goto out; /* * no limits exceeded, now record the reservation into all qgroups -- cgit v1.1 From 7c2ec3f0730729f4829d01f7c19538d135f86712 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Wed, 13 Mar 2013 07:43:03 -0600 Subject: Btrfs: fix warning when creating snapshots Creating snapshot passes extent_root to commit its transaction, but it can lead to the warning of checking root for quota in the __btrfs_end_transaction() when someone else is committing the current transaction. Since we've recorded the needed root in trans_handle, just use it to get rid of the warning. Signed-off-by: Liu Bo Signed-off-by: Chris Mason --- fs/btrfs/transaction.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index fedede1..c4a1531 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -626,14 +626,13 @@ static int __btrfs_end_transaction(struct btrfs_trans_handle *trans, btrfs_trans_release_metadata(trans, root); trans->block_rsv = NULL; - /* - * the same root has to be passed to start_transaction and - * end_transaction. Subvolume quota depends on this. - */ - WARN_ON(trans->root != root); if (trans->qgroup_reserved) { - btrfs_qgroup_free(root, trans->qgroup_reserved); + /* + * the same root has to be passed here between start_transaction + * and end_transaction. Subvolume quota depends on this. + */ + btrfs_qgroup_free(trans->root, trans->qgroup_reserved); trans->qgroup_reserved = 0; } -- cgit v1.1 From f65846a1800ef8c48d1ae1973c30dae4c356a800 Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Sat, 9 Mar 2013 07:38:41 -0800 Subject: list: Fix double fetch of pointer in hlist_entry_safe() The current version of hlist_entry_safe() fetches the pointer twice, once to test for NULL and the other to compute the offset back to the enclosing structure. This is OK for normal lock-based use because in that case, the pointer cannot change. However, when the pointer is protected by RCU (as in "rcu_dereference(p)"), then the pointer can change at any time. This use case can result in the following sequence of events: 1. CPU 0 invokes hlist_entry_safe(), fetches the RCU-protected pointer as sees that it is non-NULL. 2. CPU 1 invokes hlist_del_rcu(), deleting the entry that CPU 0 just fetched a pointer to. Because this is the last entry in the list, the pointer fetched by CPU 0 is now NULL. 3. CPU 0 refetches the pointer, obtains NULL, and then gets a NULL-pointer crash. This commit therefore applies gcc's "({ })" statement expression to create a temporary variable so that the specified pointer is fetched only once, avoiding the above sequence of events. Please note that it is the caller's responsibility to use rcu_dereference() as needed. This allows RCU-protected uses to work correctly without imposing any additional overhead on the non-RCU case. Many thanks to Eric Dumazet for spotting root cause! Reported-by: CAI Qian Reported-by: Eric Dumazet Signed-off-by: Paul E. McKenney Tested-by: Li Zefan --- include/linux/list.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/list.h b/include/linux/list.h index d991cc1..6a1f8df 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -667,7 +667,9 @@ static inline void hlist_move_list(struct hlist_head *old, pos = n) #define hlist_entry_safe(ptr, type, member) \ - (ptr) ? hlist_entry(ptr, type, member) : NULL + ({ typeof(ptr) ____ptr = (ptr); \ + ____ptr ? hlist_entry(____ptr, type, member) : NULL; \ + }) /** * hlist_for_each_entry - iterate over list of given type -- cgit v1.1 From d6d1053a8bbf75e5eb6ef29ddcf87e66421763c4 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 1 Mar 2013 14:12:01 +0100 Subject: clk: vt8500: Fix "fix device clock divisor calculations" Patch 72480014b8 "Fix device clock divisor calculations" was apparently rebased incorrectly before it got upstream, causing a build error. Replacing the "prate" pointer with the local parent_rate is most likely the correct solution. Signed-off-by: Arnd Bergmann Cc: Tony Prisk Cc: Mike Turquette --- drivers/clk/clk-vt8500.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c index b5538bb..09c6331 100644 --- a/drivers/clk/clk-vt8500.c +++ b/drivers/clk/clk-vt8500.c @@ -157,7 +157,7 @@ static int vt8500_dclk_set_rate(struct clk_hw *hw, unsigned long rate, divisor = parent_rate / rate; /* If prate / rate would be decimal, incr the divisor */ - if (rate * divisor < *prate) + if (rate * divisor < parent_rate) divisor++; if (divisor == cdev->div_mask + 1) -- cgit v1.1 From 01ffe957e2f0340a13fd40a6577d029f252ad7c7 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Feb 2013 23:11:33 +0100 Subject: [media] s5p-fimc: fix s5pv210 build 56bc911 "[media] s5p-fimc: Redefine platform data structure for fimc-is" changed the bus_type member of struct fimc_source_info treewide, but got one instance wrong in mach-s5pv210, which was evidently not even build tested. This adds the missing change to get s5pv210_defconfig to build again. Applies on the Mauro's media tree. Signed-off-by: Arnd Bergmann Cc: Sylwester Nawrocki Cc: Kyungmin Park Cc: Kukjin Kim Cc: Mauro Carvalho Chehab --- arch/arm/mach-s5pv210/mach-goni.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c index 3a38f7b..e373de4 100644 --- a/arch/arm/mach-s5pv210/mach-goni.c +++ b/arch/arm/mach-s5pv210/mach-goni.c @@ -845,7 +845,7 @@ static struct fimc_source_info goni_camera_sensors[] = { .mux_id = 0, .flags = V4L2_MBUS_PCLK_SAMPLE_FALLING | V4L2_MBUS_VSYNC_ACTIVE_LOW, - .bus_type = FIMC_BUS_TYPE_ITU_601, + .fimc_bus_type = FIMC_BUS_TYPE_ITU_601, .board_info = &noon010pc30_board_info, .i2c_bus_num = 0, .clk_frequency = 16000000UL, -- cgit v1.1 From 6fdd496e07f511a94ba27e4a1433038b32d6af05 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 13 Feb 2013 17:11:09 +0100 Subject: input/joystick: use get_cycles on ARM ARM normally has an accurate clock source, so we can theoretically use analog joysticks more accurately and at the same time avoid the build warning #warning Precise timer not defined for this architecture. from the joystick driver. Now, why anybody would use that driver no ARM I have no idea, but Ben Dooks enabled it in the s3c2410_defconfig along with a bunch of other drivers, even though that platform has neither ISA nor PCI support. It still seems to be the right thing to fix this quirk. Signed-off-by: Arnd Bergmann Cc: Dmitry Torokhov Cc: Vojtech Pavlik Cc: Ben Dooks --- drivers/input/joystick/analog.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/input/joystick/analog.c b/drivers/input/joystick/analog.c index 7cd74e2..9135606 100644 --- a/drivers/input/joystick/analog.c +++ b/drivers/input/joystick/analog.c @@ -158,14 +158,10 @@ static unsigned int get_time_pit(void) #define GET_TIME(x) rdtscl(x) #define DELTA(x,y) ((y)-(x)) #define TIME_NAME "TSC" -#elif defined(__alpha__) +#elif defined(__alpha__) || defined(CONFIG_MN10300) || defined(CONFIG_ARM) || defined(CONFIG_TILE) #define GET_TIME(x) do { x = get_cycles(); } while (0) #define DELTA(x,y) ((y)-(x)) -#define TIME_NAME "PCC" -#elif defined(CONFIG_MN10300) || defined(CONFIG_TILE) -#define GET_TIME(x) do { x = get_cycles(); } while (0) -#define DELTA(x, y) ((x) - (y)) -#define TIME_NAME "TSC" +#define TIME_NAME "get_cycles" #else #define FAKE_TIME static unsigned long analog_faketime = 0; -- cgit v1.1 From a2362d24764a4e9a3187fc46b14e1d2cd0657700 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Thu, 14 Mar 2013 16:50:02 -0700 Subject: mm/fremap.c: fix possible oops on error path The vm_flags introduced in 6d7825b10dbe ("mm/fremap.c: fix oops on error path") is supposed to avoid a compiler warning about unitialized vm_flags without changing the generated code. However I am concerned that this is going to be very brittle, and fail with some compiler versions. The failure could be either of: - compiler could actually load vma->vm_flags before checking for the !vma condition, thus reintroducing the oops - compiler could optimize out the !vma check, since the pointer just got dereferenced shortly before (so the compiler knows it can't be NULL!) I propose reversing this part of the change and initializing vm_flags to 0 just to avoid the bogus uninitialized use warning. Signed-off-by: Michel Lespinasse Cc: Tommi Rantala Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/fremap.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/mm/fremap.c b/mm/fremap.c index 6a8da7e..4723ac8 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -129,7 +129,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, struct vm_area_struct *vma; int err = -EINVAL; int has_write_lock = 0; - vm_flags_t vm_flags; + vm_flags_t vm_flags = 0; if (prot) return err; @@ -163,8 +163,7 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size, * and that the remapped range is valid and fully within * the single existing vma. */ - vm_flags = vma->vm_flags; - if (!vma || !(vm_flags & VM_SHARED)) + if (!vma || !(vma->vm_flags & VM_SHARED)) goto out; if (!vma->vm_ops || !vma->vm_ops->remap_pages) -- cgit v1.1 From 80902822658aab18330569587cdb69ac1dfdcea8 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 14 Mar 2013 14:20:54 -0400 Subject: tracing: Keep overwrite in sync between regular and snapshot buffers Changing the overwrite mode for the ring buffer via the trace option only sets the normal buffer. But the snapshot buffer could swap with it, and then the snapshot would be in non overwrite mode and the normal buffer would be in overwrite mode, even though the option flag states otherwise. Keep the two buffers overwrite modes in sync. Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 00daf5f..02debab 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2895,8 +2895,12 @@ static void set_tracer_flags(unsigned int mask, int enabled) if (mask == TRACE_ITER_RECORD_CMD) trace_event_enable_cmd_record(enabled); - if (mask == TRACE_ITER_OVERWRITE) + if (mask == TRACE_ITER_OVERWRITE) { ring_buffer_change_overwrite(global_trace.buffer, enabled); +#ifdef CONFIG_TRACER_MAX_TRACE + ring_buffer_change_overwrite(max_tr.buffer, enabled); +#endif + } if (mask == TRACE_ITER_PRINTK) trace_printk_start_stop_comm(enabled); -- cgit v1.1 From 613f04a0f51e6e68ac6fe571ab79da3c0a5eb4da Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Thu, 14 Mar 2013 15:03:53 -0400 Subject: tracing: Prevent buffer overwrite disabled for latency tracers The latency tracers require the buffers to be in overwrite mode, otherwise they get screwed up. Force the buffers to stay in overwrite mode when latency tracers are enabled. Added a flag_changed() method to the tracer structure to allow the tracers to see what flags are being changed, and also be able to prevent the change from happing. Cc: stable@vger.kernel.org Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 38 ++++++++++++++++++++++++++++++++------ kernel/trace/trace.h | 6 ++++++ kernel/trace/trace_irqsoff.c | 19 ++++++++++++++----- kernel/trace/trace_sched_wakeup.c | 18 +++++++++++++----- 4 files changed, 65 insertions(+), 16 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 02debab..4f1dade 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -2881,11 +2881,25 @@ static int set_tracer_option(struct tracer *trace, char *cmp, int neg) return -EINVAL; } -static void set_tracer_flags(unsigned int mask, int enabled) +/* Some tracers require overwrite to stay enabled */ +int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set) +{ + if (tracer->enabled && (mask & TRACE_ITER_OVERWRITE) && !set) + return -1; + + return 0; +} + +int set_tracer_flag(unsigned int mask, int enabled) { /* do nothing if flag is already set */ if (!!(trace_flags & mask) == !!enabled) - return; + return 0; + + /* Give the tracer a chance to approve the change */ + if (current_trace->flag_changed) + if (current_trace->flag_changed(current_trace, mask, !!enabled)) + return -EINVAL; if (enabled) trace_flags |= mask; @@ -2904,13 +2918,15 @@ static void set_tracer_flags(unsigned int mask, int enabled) if (mask == TRACE_ITER_PRINTK) trace_printk_start_stop_comm(enabled); + + return 0; } static int trace_set_options(char *option) { char *cmp; int neg = 0; - int ret = 0; + int ret = -ENODEV; int i; cmp = strstrip(option); @@ -2924,7 +2940,7 @@ static int trace_set_options(char *option) for (i = 0; trace_options[i]; i++) { if (strcmp(cmp, trace_options[i]) == 0) { - set_tracer_flags(1 << i, !neg); + ret = set_tracer_flag(1 << i, !neg); break; } } @@ -2943,6 +2959,7 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos) { char buf[64]; + int ret; if (cnt >= sizeof(buf)) return -EINVAL; @@ -2952,7 +2969,9 @@ tracing_trace_options_write(struct file *filp, const char __user *ubuf, buf[cnt] = 0; - trace_set_options(buf); + ret = trace_set_options(buf); + if (ret < 0) + return ret; *ppos += cnt; @@ -3256,6 +3275,9 @@ static int tracing_set_tracer(const char *buf) goto out; trace_branch_disable(); + + current_trace->enabled = false; + if (current_trace->reset) current_trace->reset(tr); @@ -3300,6 +3322,7 @@ static int tracing_set_tracer(const char *buf) } current_trace = t; + current_trace->enabled = true; trace_branch_enable(tr); out: mutex_unlock(&trace_types_lock); @@ -4788,9 +4811,12 @@ trace_options_core_write(struct file *filp, const char __user *ubuf, size_t cnt, return -EINVAL; mutex_lock(&trace_types_lock); - set_tracer_flags(1 << index, val); + ret = set_tracer_flag(1 << index, val); mutex_unlock(&trace_types_lock); + if (ret < 0) + return ret; + *ppos += cnt; return cnt; diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 57d7e53..2081971 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -283,11 +283,15 @@ struct tracer { enum print_line_t (*print_line)(struct trace_iterator *iter); /* If you handled the flag setting, return 0 */ int (*set_flag)(u32 old_flags, u32 bit, int set); + /* Return 0 if OK with change, else return non-zero */ + int (*flag_changed)(struct tracer *tracer, + u32 mask, int set); struct tracer *next; struct tracer_flags *flags; bool print_max; bool use_max_tr; bool allocated_snapshot; + bool enabled; }; @@ -943,6 +947,8 @@ extern const char *__stop___trace_bprintk_fmt[]; void trace_printk_init_buffers(void); void trace_printk_start_comm(void); +int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set); +int set_tracer_flag(unsigned int mask, int enabled); #undef FTRACE_ENTRY #define FTRACE_ENTRY(call, struct_name, id, tstruct, print, filter) \ diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index 713a2ca..443b25b 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -32,7 +32,7 @@ enum { static int trace_type __read_mostly; -static int save_lat_flag; +static int save_flags; static void stop_irqsoff_tracer(struct trace_array *tr, int graph); static int start_irqsoff_tracer(struct trace_array *tr, int graph); @@ -558,8 +558,11 @@ static void stop_irqsoff_tracer(struct trace_array *tr, int graph) static void __irqsoff_tracer_init(struct trace_array *tr) { - save_lat_flag = trace_flags & TRACE_ITER_LATENCY_FMT; - trace_flags |= TRACE_ITER_LATENCY_FMT; + save_flags = trace_flags; + + /* non overwrite screws up the latency tracers */ + set_tracer_flag(TRACE_ITER_OVERWRITE, 1); + set_tracer_flag(TRACE_ITER_LATENCY_FMT, 1); tracing_max_latency = 0; irqsoff_trace = tr; @@ -573,10 +576,13 @@ static void __irqsoff_tracer_init(struct trace_array *tr) static void irqsoff_tracer_reset(struct trace_array *tr) { + int lat_flag = save_flags & TRACE_ITER_LATENCY_FMT; + int overwrite_flag = save_flags & TRACE_ITER_OVERWRITE; + stop_irqsoff_tracer(tr, is_graph()); - if (!save_lat_flag) - trace_flags &= ~TRACE_ITER_LATENCY_FMT; + set_tracer_flag(TRACE_ITER_LATENCY_FMT, lat_flag); + set_tracer_flag(TRACE_ITER_OVERWRITE, overwrite_flag); } static void irqsoff_tracer_start(struct trace_array *tr) @@ -609,6 +615,7 @@ static struct tracer irqsoff_tracer __read_mostly = .print_line = irqsoff_print_line, .flags = &tracer_flags, .set_flag = irqsoff_set_flag, + .flag_changed = trace_keep_overwrite, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_irqsoff, #endif @@ -642,6 +649,7 @@ static struct tracer preemptoff_tracer __read_mostly = .print_line = irqsoff_print_line, .flags = &tracer_flags, .set_flag = irqsoff_set_flag, + .flag_changed = trace_keep_overwrite, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_preemptoff, #endif @@ -677,6 +685,7 @@ static struct tracer preemptirqsoff_tracer __read_mostly = .print_line = irqsoff_print_line, .flags = &tracer_flags, .set_flag = irqsoff_set_flag, + .flag_changed = trace_keep_overwrite, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_preemptirqsoff, #endif diff --git a/kernel/trace/trace_sched_wakeup.c b/kernel/trace/trace_sched_wakeup.c index 75aa97f..fde652c 100644 --- a/kernel/trace/trace_sched_wakeup.c +++ b/kernel/trace/trace_sched_wakeup.c @@ -36,7 +36,7 @@ static void __wakeup_reset(struct trace_array *tr); static int wakeup_graph_entry(struct ftrace_graph_ent *trace); static void wakeup_graph_return(struct ftrace_graph_ret *trace); -static int save_lat_flag; +static int save_flags; #define TRACE_DISPLAY_GRAPH 1 @@ -540,8 +540,11 @@ static void stop_wakeup_tracer(struct trace_array *tr) static int __wakeup_tracer_init(struct trace_array *tr) { - save_lat_flag = trace_flags & TRACE_ITER_LATENCY_FMT; - trace_flags |= TRACE_ITER_LATENCY_FMT; + save_flags = trace_flags; + + /* non overwrite screws up the latency tracers */ + set_tracer_flag(TRACE_ITER_OVERWRITE, 1); + set_tracer_flag(TRACE_ITER_LATENCY_FMT, 1); tracing_max_latency = 0; wakeup_trace = tr; @@ -563,12 +566,15 @@ static int wakeup_rt_tracer_init(struct trace_array *tr) static void wakeup_tracer_reset(struct trace_array *tr) { + int lat_flag = save_flags & TRACE_ITER_LATENCY_FMT; + int overwrite_flag = save_flags & TRACE_ITER_OVERWRITE; + stop_wakeup_tracer(tr); /* make sure we put back any tasks we are tracing */ wakeup_reset(tr); - if (!save_lat_flag) - trace_flags &= ~TRACE_ITER_LATENCY_FMT; + set_tracer_flag(TRACE_ITER_LATENCY_FMT, lat_flag); + set_tracer_flag(TRACE_ITER_OVERWRITE, overwrite_flag); } static void wakeup_tracer_start(struct trace_array *tr) @@ -594,6 +600,7 @@ static struct tracer wakeup_tracer __read_mostly = .print_line = wakeup_print_line, .flags = &tracer_flags, .set_flag = wakeup_set_flag, + .flag_changed = trace_keep_overwrite, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_wakeup, #endif @@ -615,6 +622,7 @@ static struct tracer wakeup_rt_tracer __read_mostly = .print_line = wakeup_print_line, .flags = &tracer_flags, .set_flag = wakeup_set_flag, + .flag_changed = trace_keep_overwrite, #ifdef CONFIG_FTRACE_SELFTEST .selftest = trace_selftest_startup_wakeup, #endif -- cgit v1.1 From d1d28500cccc269fdbf81ba33d7328d1d2c04b2f Mon Sep 17 00:00:00 2001 From: Dylan Reid Date: Thu, 14 Mar 2013 17:27:44 -0700 Subject: ALSA: hda/ca0132 - Check if dspload_image succeeded. If dspload_image() fails, it was ignored and dspload_wait_loaded() was still called. dsp_loaded should never be set to true in this case, skip it. The check in dspload_wait_loaded() return true if the DSP is loaded or if it never started. Signed-off-by: Dylan Reid Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_ca0132.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c index eefc456..cf24b75 100644 --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -4351,12 +4351,16 @@ static bool ca0132_download_dsp_images(struct hda_codec *codec) return false; dsp_os_image = (struct dsp_image_seg *)(fw_entry->data); - dspload_image(codec, dsp_os_image, 0, 0, true, 0); + if (dspload_image(codec, dsp_os_image, 0, 0, true, 0)) { + pr_err("ca0132 dspload_image failed.\n"); + goto exit_download; + } + dsp_loaded = dspload_wait_loaded(codec); +exit_download: release_firmware(fw_entry); - return dsp_loaded; } -- cgit v1.1 From e8f1bd5d77484a1088797fd5689b1a37148a170e Mon Sep 17 00:00:00 2001 From: Dylan Reid Date: Thu, 14 Mar 2013 17:27:45 -0700 Subject: ALSA: hda/ca0132 - Check download state of DSP. Instead of using the dspload_is_loaded() function, check the dsp_state that is kept in the spec. The dspload_is_loaded() function returns true if the DSP transfer was never started. This false-positive leads to multiple second delays when ca0132_setup_efaults() times out on each write. Signed-off-by: Dylan Reid Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_ca0132.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c index cf24b75..225d1d5 100644 --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -3239,7 +3239,7 @@ static int ca0132_set_vipsource(struct hda_codec *codec, int val) struct ca0132_spec *spec = codec->spec; unsigned int tmp; - if (!dspload_is_loaded(codec)) + if (spec->dsp_state != DSP_DOWNLOADED) return 0; /* if CrystalVoice if off, vipsource should be 0 */ @@ -4267,11 +4267,12 @@ static void ca0132_refresh_widget_caps(struct hda_codec *codec) */ static void ca0132_setup_defaults(struct hda_codec *codec) { + struct ca0132_spec *spec = codec->spec; unsigned int tmp; int num_fx; int idx, i; - if (!dspload_is_loaded(codec)) + if (spec->dsp_state != DSP_DOWNLOADED) return; /* out, in effects + voicefx */ -- cgit v1.1 From b714a7106ba5423c418c25e6231116560f8a9ef8 Mon Sep 17 00:00:00 2001 From: Dylan Reid Date: Thu, 14 Mar 2013 17:27:46 -0700 Subject: ALSA: hda/ca0132 - Remove extra setting of dsp_state. spec->dsp_state is initialized to DSP_DOWNLOAD_INIT, no need to reset and check it in ca0132_download_dsp(). Signed-off-by: Dylan Reid Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_ca0132.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/sound/pci/hda/patch_ca0132.c b/sound/pci/hda/patch_ca0132.c index 225d1d5..0792b57 100644 --- a/sound/pci/hda/patch_ca0132.c +++ b/sound/pci/hda/patch_ca0132.c @@ -4372,16 +4372,13 @@ static void ca0132_download_dsp(struct hda_codec *codec) #ifndef CONFIG_SND_HDA_CODEC_CA0132_DSP return; /* NOP */ #endif - spec->dsp_state = DSP_DOWNLOAD_INIT; - if (spec->dsp_state == DSP_DOWNLOAD_INIT) { - chipio_enable_clocks(codec); - spec->dsp_state = DSP_DOWNLOADING; - if (!ca0132_download_dsp_images(codec)) - spec->dsp_state = DSP_DOWNLOAD_FAILED; - else - spec->dsp_state = DSP_DOWNLOADED; - } + chipio_enable_clocks(codec); + spec->dsp_state = DSP_DOWNLOADING; + if (!ca0132_download_dsp_images(codec)) + spec->dsp_state = DSP_DOWNLOAD_FAILED; + else + spec->dsp_state = DSP_DOWNLOADED; if (spec->dsp_state == DSP_DOWNLOADED) ca0132_set_dsp_msr(codec, true); -- cgit v1.1 From 037154105e3767324db7c34bf8f540a12cb61d70 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Mar 2013 22:56:38 +0100 Subject: mfd: twl4030-madc: Remove __exit_p annotation 4740f73fe5 "mfd: remove use of __devexit" removed the __devexit annotation on the twl4030_madc_remove function, but left an __exit_p() present on the pointer to this function. Using __exit_p was as wrong with the devexit in place as it is now, but now we get a gcc warning about an unused function. In order for the twl4030_madc_remove to work correctly in built-in code, we have to remove the __exit_p. Cc: Bill Pemberton Cc: Greg Kroah-Hartman Signed-off-by: Arnd Bergmann Signed-off-by: Samuel Ortiz --- drivers/mfd/twl4030-madc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/twl4030-madc.c b/drivers/mfd/twl4030-madc.c index 88ff9dc..942b666 100644 --- a/drivers/mfd/twl4030-madc.c +++ b/drivers/mfd/twl4030-madc.c @@ -800,7 +800,7 @@ static int twl4030_madc_remove(struct platform_device *pdev) static struct platform_driver twl4030_madc_driver = { .probe = twl4030_madc_probe, - .remove = __exit_p(twl4030_madc_remove), + .remove = twl4030_madc_remove, .driver = { .name = "twl4030_madc", .owner = THIS_MODULE, -- cgit v1.1 From 57220bc1f5924c869d8fc049e50169915ca0cb24 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Fri, 15 Mar 2013 09:14:22 +0300 Subject: sound: sequencer: cap array index in seq_chn_common_event() "chn" here is a number between 0 and 255, but ->chn_info[] only has 16 elements so there is a potential write beyond the end of the array. If the seq_mode isn't SEQ_2 then we let the individual drivers (either opl3.c or midi_synth.c) handle it. Those functions all do a bounds check on "chn" so I haven't changed anything here. The opl3.c driver has up to 18 channels and not 16. Signed-off-by: Dan Carpenter Signed-off-by: Takashi Iwai --- sound/oss/sequencer.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/oss/sequencer.c b/sound/oss/sequencer.c index 30bcfe4..4ff60a6 100644 --- a/sound/oss/sequencer.c +++ b/sound/oss/sequencer.c @@ -545,6 +545,9 @@ static void seq_chn_common_event(unsigned char *event_rec) case MIDI_PGM_CHANGE: if (seq_mode == SEQ_2) { + if (chn > 15) + break; + synth_devs[dev]->chn_info[chn].pgm_num = p1; if ((int) dev >= num_synths) synth_devs[dev]->set_instr(dev, chn, p1); @@ -596,6 +599,9 @@ static void seq_chn_common_event(unsigned char *event_rec) case MIDI_PITCH_BEND: if (seq_mode == SEQ_2) { + if (chn > 15) + break; + synth_devs[dev]->chn_info[chn].bender_value = w14; if ((int) dev < num_synths) -- cgit v1.1 From e71dc5f787f3908b8b8158103fc7d74a78a22cd1 Mon Sep 17 00:00:00 2001 From: Haojian Zhuang Date: Fri, 15 Mar 2013 16:27:53 +0800 Subject: ARM: mmp: add platform_device head file in gplugd MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/arm/mach-mmp/gplugd.c: In function ‘gplugd_init’: arch/arm/mach-mmp/gplugd.c:188:2: error: implicit declaration of function ‘platform_device_register’ [-Werror=implicit-function-declaration] cc1: some warnings being treated as errors make[1]: *** [arch/arm/mach-mmp/gplugd.o] Error 1 make: *** [arch/arm/mach-mmp] Error 2 So append platform_device.h to resolve build issue. Signed-off-by: Haojian Zhuang --- arch/arm/mach-mmp/gplugd.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-mmp/gplugd.c b/arch/arm/mach-mmp/gplugd.c index d1e2d59..f62b68d 100644 --- a/arch/arm/mach-mmp/gplugd.c +++ b/arch/arm/mach-mmp/gplugd.c @@ -9,6 +9,7 @@ */ #include +#include #include #include -- cgit v1.1 From 8dda05ccd8a227e2b56ce6b26d52b1af88437f9e Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Mon, 4 Mar 2013 15:19:19 -0800 Subject: ARM: Scorpion is a v7 architecture, not v6 Scorpion processors have always been v7 CPUs. Fix the Kconfig text to reflect this. Reported-by: Stepan Moskovchenko Signed-off-by: Stephen Boyd Signed-off-by: Arnd Bergmann --- arch/arm/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9c87fd8..ca1b6fd 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1005,12 +1005,12 @@ config ARCH_MULTI_V4_V5 bool config ARCH_MULTI_V6 - bool "ARMv6 based platforms (ARM11, Scorpion, ...)" + bool "ARMv6 based platforms (ARM11)" select ARCH_MULTI_V6_V7 select CPU_V6 config ARCH_MULTI_V7 - bool "ARMv7 based platforms (Cortex-A, PJ4, Krait)" + bool "ARMv7 based platforms (Cortex-A, PJ4, Scorpion, Krait)" default y select ARCH_MULTI_V6_V7 select ARCH_VEXPRESS -- cgit v1.1 From 0d98da5d845e0d0293055913ce65c9904b3b902a Mon Sep 17 00:00:00 2001 From: Gao feng Date: Thu, 7 Mar 2013 17:20:46 +0000 Subject: netfilter: nf_conntrack: register pernet subsystem before register L4 proto In (c296bb4 netfilter: nf_conntrack: refactor l4proto support for netns) the l4proto gre/dccp/udplite/sctp registration happened before the pernet subsystem, which is wrong. Register pernet subsystem before register L4proto since after register L4proto, init_conntrack may try to access the resources which allocated in register_pernet_subsys. Reported-by: Alexey Dobriyan Cc: Alexey Dobriyan Signed-off-by: Gao feng Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nf_conntrack_proto_dccp.c | 12 ++++++------ net/netfilter/nf_conntrack_proto_gre.c | 12 ++++++------ net/netfilter/nf_conntrack_proto_sctp.c | 12 ++++++------ net/netfilter/nf_conntrack_proto_udplite.c | 12 ++++++------ 4 files changed, 24 insertions(+), 24 deletions(-) diff --git a/net/netfilter/nf_conntrack_proto_dccp.c b/net/netfilter/nf_conntrack_proto_dccp.c index 432f957..ba65b20 100644 --- a/net/netfilter/nf_conntrack_proto_dccp.c +++ b/net/netfilter/nf_conntrack_proto_dccp.c @@ -969,6 +969,10 @@ static int __init nf_conntrack_proto_dccp_init(void) { int ret; + ret = register_pernet_subsys(&dccp_net_ops); + if (ret < 0) + goto out_pernet; + ret = nf_ct_l4proto_register(&dccp_proto4); if (ret < 0) goto out_dccp4; @@ -977,16 +981,12 @@ static int __init nf_conntrack_proto_dccp_init(void) if (ret < 0) goto out_dccp6; - ret = register_pernet_subsys(&dccp_net_ops); - if (ret < 0) - goto out_pernet; - return 0; -out_pernet: - nf_ct_l4proto_unregister(&dccp_proto6); out_dccp6: nf_ct_l4proto_unregister(&dccp_proto4); out_dccp4: + unregister_pernet_subsys(&dccp_net_ops); +out_pernet: return ret; } diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c index bd7d01d..155ce9f 100644 --- a/net/netfilter/nf_conntrack_proto_gre.c +++ b/net/netfilter/nf_conntrack_proto_gre.c @@ -420,18 +420,18 @@ static int __init nf_ct_proto_gre_init(void) { int ret; - ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4); - if (ret < 0) - goto out_gre4; - ret = register_pernet_subsys(&proto_gre_net_ops); if (ret < 0) goto out_pernet; + ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_gre4); + if (ret < 0) + goto out_gre4; + return 0; -out_pernet: - nf_ct_l4proto_unregister(&nf_conntrack_l4proto_gre4); out_gre4: + unregister_pernet_subsys(&proto_gre_net_ops); +out_pernet: return ret; } diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c index 480f616..ec83536 100644 --- a/net/netfilter/nf_conntrack_proto_sctp.c +++ b/net/netfilter/nf_conntrack_proto_sctp.c @@ -888,6 +888,10 @@ static int __init nf_conntrack_proto_sctp_init(void) { int ret; + ret = register_pernet_subsys(&sctp_net_ops); + if (ret < 0) + goto out_pernet; + ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_sctp4); if (ret < 0) goto out_sctp4; @@ -896,16 +900,12 @@ static int __init nf_conntrack_proto_sctp_init(void) if (ret < 0) goto out_sctp6; - ret = register_pernet_subsys(&sctp_net_ops); - if (ret < 0) - goto out_pernet; - return 0; -out_pernet: - nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp6); out_sctp6: nf_ct_l4proto_unregister(&nf_conntrack_l4proto_sctp4); out_sctp4: + unregister_pernet_subsys(&sctp_net_ops); +out_pernet: return ret; } diff --git a/net/netfilter/nf_conntrack_proto_udplite.c b/net/netfilter/nf_conntrack_proto_udplite.c index 1574895..ca969f6 100644 --- a/net/netfilter/nf_conntrack_proto_udplite.c +++ b/net/netfilter/nf_conntrack_proto_udplite.c @@ -371,6 +371,10 @@ static int __init nf_conntrack_proto_udplite_init(void) { int ret; + ret = register_pernet_subsys(&udplite_net_ops); + if (ret < 0) + goto out_pernet; + ret = nf_ct_l4proto_register(&nf_conntrack_l4proto_udplite4); if (ret < 0) goto out_udplite4; @@ -379,16 +383,12 @@ static int __init nf_conntrack_proto_udplite_init(void) if (ret < 0) goto out_udplite6; - ret = register_pernet_subsys(&udplite_net_ops); - if (ret < 0) - goto out_pernet; - return 0; -out_pernet: - nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite6); out_udplite6: nf_ct_l4proto_unregister(&nf_conntrack_l4proto_udplite4); out_udplite4: + unregister_pernet_subsys(&udplite_net_ops); +out_pernet: return ret; } -- cgit v1.1 From bae99f7a1d372374aaf9ed8910f3b825da995b36 Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Thu, 14 Mar 2013 06:03:18 +0000 Subject: netfilter: nfnetlink_queue: fix incorrect initialization of copy range field 2^16 = 0xffff, not 0xfffff (note the extra 'f'). Not dangerous since you adjust it to min_t(data_len, skb->len) just after on. Reported-by: Eric Dumazet Signed-off-by: Pablo Neira Ayuso --- net/netfilter/nfnetlink_queue_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c index 858fd52..1cb4854 100644 --- a/net/netfilter/nfnetlink_queue_core.c +++ b/net/netfilter/nfnetlink_queue_core.c @@ -112,7 +112,7 @@ instance_create(u_int16_t queue_num, int portid) inst->queue_num = queue_num; inst->peer_portid = portid; inst->queue_maxlen = NFQNL_QMAX_DEFAULT; - inst->copy_range = 0xfffff; + inst->copy_range = 0xffff; inst->copy_mode = NFQNL_COPY_NONE; spin_lock_init(&inst->lock); INIT_LIST_HEAD(&inst->queue_list); -- cgit v1.1 From a82783c91d5dce680dbd290ebf301a520b0e72a5 Mon Sep 17 00:00:00 2001 From: Florian Westphal Date: Mon, 11 Mar 2013 20:11:01 +0000 Subject: netfilter: ip6t_NPT: restrict to mangle table As the translation is stateless, using it in nat table doesn't work (only initial packet is translated). filter table OUTPUT works but won't re-route the packet after translation. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso --- net/ipv6/netfilter/ip6t_NPT.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv6/netfilter/ip6t_NPT.c b/net/ipv6/netfilter/ip6t_NPT.c index 83acc14..33608c6 100644 --- a/net/ipv6/netfilter/ip6t_NPT.c +++ b/net/ipv6/netfilter/ip6t_NPT.c @@ -114,6 +114,7 @@ ip6t_dnpt_tg(struct sk_buff *skb, const struct xt_action_param *par) static struct xt_target ip6t_npt_target_reg[] __read_mostly = { { .name = "SNPT", + .table = "mangle", .target = ip6t_snpt_tg, .targetsize = sizeof(struct ip6t_npt_tginfo), .checkentry = ip6t_npt_checkentry, @@ -124,6 +125,7 @@ static struct xt_target ip6t_npt_target_reg[] __read_mostly = { }, { .name = "DNPT", + .table = "mangle", .target = ip6t_dnpt_tg, .targetsize = sizeof(struct ip6t_npt_tginfo), .checkentry = ip6t_npt_checkentry, -- cgit v1.1 From d97e74976982a35168c7f131cce0d93537337a26 Mon Sep 17 00:00:00 2001 From: Lucas Stach Date: Thu, 14 Mar 2013 05:12:01 +0000 Subject: net: fec: restart the FEC when PHY speed changes Proviously we would only restart the FEC when PHY link or duplex state changed. PHY does not always bring down the link for speed changes, in which case we would not detect any change and keep FEC running. Switching link speed without restarting the FEC results in the FEC being stuck in an indefinite state, generating error conditions for every packet. Signed-off-by: Lucas Stach Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.c | 26 +++++++++++++++----------- drivers/net/ethernet/freescale/fec.h | 1 + 2 files changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 069a155..61d2e62 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -934,24 +934,28 @@ static void fec_enet_adjust_link(struct net_device *ndev) goto spin_unlock; } - /* Duplex link change */ if (phy_dev->link) { - if (fep->full_duplex != phy_dev->duplex) { - fec_restart(ndev, phy_dev->duplex); - /* prevent unnecessary second fec_restart() below */ + if (!fep->link) { fep->link = phy_dev->link; status_change = 1; } - } - /* Link on or off change */ - if (phy_dev->link != fep->link) { - fep->link = phy_dev->link; - if (phy_dev->link) + if (fep->full_duplex != phy_dev->duplex) + status_change = 1; + + if (phy_dev->speed != fep->speed) { + fep->speed = phy_dev->speed; + status_change = 1; + } + + /* if any of the above changed restart the FEC */ + if (status_change) fec_restart(ndev, phy_dev->duplex); - else + } else { + if (fep->link) { fec_stop(ndev); - status_change = 1; + status_change = 1; + } } spin_unlock: diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h index f539007..eb43729 100644 --- a/drivers/net/ethernet/freescale/fec.h +++ b/drivers/net/ethernet/freescale/fec.h @@ -240,6 +240,7 @@ struct fec_enet_private { phy_interface_t phy_interface; int link; int full_duplex; + int speed; struct completion mdio_done; int irq[FEC_IRQ_NUM]; int bufdesc_ex; -- cgit v1.1 From 3f104c38259dcb3e5443c246f0805bc04d887cc3 Mon Sep 17 00:00:00 2001 From: Georg Hofmann Date: Thu, 14 Mar 2013 06:54:09 +0000 Subject: net: fec: fix missing napi_disable call Commit dc975382d2ef36be7e78fac3717927de1a5abcd8 introduces napi support but never calls napi_disable. This will generate a kernel oops (kernel BUG at include/linux/netdevice.h:473!) every time, when ndo_stop is called followed by ndo_start. Add the missing napi_diable call. Signed-off-by: Georg Hofmann Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 61d2e62..e3f3937 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1441,6 +1441,7 @@ fec_enet_close(struct net_device *ndev) struct fec_enet_private *fep = netdev_priv(ndev); /* Don't know what to do yet. */ + napi_disable(&fep->napi); fep->opened = 0; netif_stop_queue(ndev); fec_stop(ndev); -- cgit v1.1 From 1e731cb986d564c4938bcba89ff5f4aea1d8e2fb Mon Sep 17 00:00:00 2001 From: Robert de Vries Date: Thu, 14 Mar 2013 09:29:06 +0000 Subject: smsc75xx: configuration help incorrectly mentions smsc95xx The Kconfig file help information incorrectly mentions that the SMSC LAN75xx config option is for SMSC LAN95xx devices. Signed-off-by: Robert de Vries Signed-off-by: David S. Miller --- drivers/net/usb/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/Kconfig b/drivers/net/usb/Kconfig index 3b6e9b8..7c769d8 100644 --- a/drivers/net/usb/Kconfig +++ b/drivers/net/usb/Kconfig @@ -268,7 +268,7 @@ config USB_NET_SMSC75XX select CRC16 select CRC32 help - This option adds support for SMSC LAN95XX based USB 2.0 + This option adds support for SMSC LAN75XX based USB 2.0 Gigabit Ethernet adapters. config USB_NET_SMSC95XX -- cgit v1.1 From aaa0c23cb90141309f5076ba5e3bfbd39544b985 Mon Sep 17 00:00:00 2001 From: Zhouyi Zhou Date: Thu, 14 Mar 2013 17:21:50 +0000 Subject: Fix dst_neigh_lookup/dst_neigh_lookup_skb return value handling bug When neighbour table is full, dst_neigh_lookup/dst_neigh_lookup_skb will return -ENOBUFS which is absolutely non zero, while all the code in kernel which use above functions assume failure only on zero return which will cause panic. (for example: : https://bugzilla.kernel.org/show_bug.cgi?id=54731). This patch corrects above error with smallest changes to kernel source code and also correct two return value check missing bugs in drivers/infiniband/hw/cxgb4/cm.c Tested on my x86_64 SMP machine Reported-by: Zhouyi Zhou Tested-by: Zhouyi Zhou Signed-off-by: Zhouyi Zhou Signed-off-by: David S. Miller --- drivers/infiniband/hw/cxgb4/cm.c | 12 ++++++++++++ include/net/dst.h | 6 ++++-- 2 files changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c index 565bfb1..a3fde52 100644 --- a/drivers/infiniband/hw/cxgb4/cm.c +++ b/drivers/infiniband/hw/cxgb4/cm.c @@ -1575,6 +1575,12 @@ static int c4iw_reconnect(struct c4iw_ep *ep) neigh = dst_neigh_lookup(ep->dst, &ep->com.cm_id->remote_addr.sin_addr.s_addr); + if (!neigh) { + pr_err("%s - cannot alloc neigh.\n", __func__); + err = -ENOMEM; + goto fail4; + } + /* get a l2t entry */ if (neigh->dev->flags & IFF_LOOPBACK) { PDBG("%s LOOPBACK\n", __func__); @@ -3053,6 +3059,12 @@ static int rx_pkt(struct c4iw_dev *dev, struct sk_buff *skb) dst = &rt->dst; neigh = dst_neigh_lookup_skb(dst, skb); + if (!neigh) { + pr_err("%s - failed to allocate neigh!\n", + __func__); + goto free_dst; + } + if (neigh->dev->flags & IFF_LOOPBACK) { pdev = ip_dev_find(&init_net, iph->daddr); e = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, diff --git a/include/net/dst.h b/include/net/dst.h index 853cda1..1f8fd10 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -413,13 +413,15 @@ static inline int dst_neigh_output(struct dst_entry *dst, struct neighbour *n, static inline struct neighbour *dst_neigh_lookup(const struct dst_entry *dst, const void *daddr) { - return dst->ops->neigh_lookup(dst, NULL, daddr); + struct neighbour *n = dst->ops->neigh_lookup(dst, NULL, daddr); + return IS_ERR(n) ? NULL : n; } static inline struct neighbour *dst_neigh_lookup_skb(const struct dst_entry *dst, struct sk_buff *skb) { - return dst->ops->neigh_lookup(dst, skb, NULL); + struct neighbour *n = dst->ops->neigh_lookup(dst, skb, NULL); + return IS_ERR(n) ? NULL : n; } static inline void dst_link_failure(struct sk_buff *skb) -- cgit v1.1 From 6d3073e124e1a6138b929479301d3a7ecde00f27 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 15 Mar 2013 14:23:32 +0100 Subject: ALSA: hda - Fix missing EAPD/GPIO setup for Cirrus codecs During the transition to the generic parser, the hook to the codec specific automute function was forgotten. This resulted in the silent output on some MacBooks. Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_cirrus.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index 72ebb8a..60d08f6 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -506,6 +506,8 @@ static int patch_cs420x(struct hda_codec *codec) if (!spec) return -ENOMEM; + spec->gen.automute_hook = cs_automute; + snd_hda_pick_fixup(codec, cs420x_models, cs420x_fixup_tbl, cs420x_fixups); snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PRE_PROBE); @@ -893,6 +895,8 @@ static int patch_cs4210(struct hda_codec *codec) if (!spec) return -ENOMEM; + spec->gen.automute_hook = cs_automute; + snd_hda_pick_fixup(codec, cs421x_models, cs421x_fixup_tbl, cs421x_fixups); snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PRE_PROBE); -- cgit v1.1 From 5dc2eb7da1e387e31ce54f54af580c6a6f512ca6 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 26 Feb 2013 10:55:18 +0100 Subject: ARM: i.MX35: enable MAX clock The i.MX35 has two bits per clock gate which are decoded as follows: 0b00 -> clock off 0b01 -> clock is on in run mode, off in wait/doze 0b10 -> clock is on in run/wait mode, off in doze 0b11 -> clock is always on The reset value for the MAX clock is 0b10. The MAX clock is needed by the SoC, yet unused in the Kernel, so the common clock framework will disable it during late init time. It will only disable clocks though which it detects as being turned on. This detection is made depending on the lower bit of the gate. If the reset value has been altered by the bootloader to 0b11 the clock framework will detect the clock as turned on, yet unused, hence it will turn it off and the system locks up. This patch turns the MAX clock on unconditionally making the Kernel independent of the bootloader. Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/clk-imx35.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-imx/clk-imx35.c b/arch/arm/mach-imx/clk-imx35.c index 74e3a34..e13a8fa 100644 --- a/arch/arm/mach-imx/clk-imx35.c +++ b/arch/arm/mach-imx/clk-imx35.c @@ -264,6 +264,7 @@ int __init mx35_clocks_init(void) clk_prepare_enable(clk[gpio3_gate]); clk_prepare_enable(clk[iim_gate]); clk_prepare_enable(clk[emi_gate]); + clk_prepare_enable(clk[max_gate]); /* * SCC is needed to boot via mmc after a watchdog reset. The clock code -- cgit v1.1 From 1d9d8639c063caf6efc2447f5f26aa637f844ff6 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Fri, 15 Mar 2013 14:26:07 +0100 Subject: perf,x86: fix kernel crash with PEBS/BTS after suspend/resume This patch fixes a kernel crash when using precise sampling (PEBS) after a suspend/resume. Turns out the CPU notifier code is not invoked on CPU0 (BP). Therefore, the DS_AREA (used by PEBS) is not restored properly by the kernel and keeps it power-on/resume value of 0 causing any PEBS measurement to crash when running on CPU0. The workaround is to add a hook in the actual resume code to restore the DS Area MSR value. It is invoked for all CPUS. So for all but CPU0, the DS_AREA will be restored twice but this is harmless. Reported-by: Linus Torvalds Signed-off-by: Stephane Eranian Signed-off-by: Linus Torvalds --- arch/x86/kernel/cpu/perf_event_intel_ds.c | 8 ++++++++ arch/x86/power/cpu.c | 2 ++ include/linux/perf_event.h | 2 ++ 3 files changed, 12 insertions(+) diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c index 826054a..0e9bdd3 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_ds.c +++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c @@ -729,3 +729,11 @@ void intel_ds_init(void) } } } + +void perf_restore_debug_store(void) +{ + if (!x86_pmu.bts && !x86_pmu.pebs) + return; + + init_debug_store_on_cpu(smp_processor_id()); +} diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c index 120cee1..3c68768 100644 --- a/arch/x86/power/cpu.c +++ b/arch/x86/power/cpu.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include @@ -228,6 +229,7 @@ static void __restore_processor_state(struct saved_context *ctxt) do_fpu_end(); x86_platform.restore_sched_clock_state(); mtrr_bp_restore(); + perf_restore_debug_store(); } /* Needed by apm.c */ diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index e47ee46..71caed8 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,6 +758,7 @@ extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern int __perf_event_disable(void *info); extern void perf_event_task_tick(void); +extern void perf_restore_debug_store(void); #else static inline void perf_event_task_sched_in(struct task_struct *prev, @@ -797,6 +798,7 @@ static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } +static inline void perf_restore_debug_store(void) { } #endif #define perf_output_put(handle, x) perf_output_copy((handle), &(x), sizeof(x)) -- cgit v1.1 From d66629c1325399cf080ba8b2fb086c10e5439cdd Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 15 Mar 2013 11:00:39 +0800 Subject: Bluetooth: Add support for Dell[QCA 0cf3:0036] Add support for the AR9462 chip T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0cf3 ProdID=0036 Rev= 0.02 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=01 I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms Cc: Cc: Gustavo Padovan Signed-off-by: Ming Lei Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 3095d2e..0a6ef6b 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -73,6 +73,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x03F0, 0x311D) }, /* Atheros AR3012 with sflash firmware*/ + { USB_DEVICE(0x0CF3, 0x0036) }, { USB_DEVICE(0x0CF3, 0x3004) }, { USB_DEVICE(0x0CF3, 0x3008) }, { USB_DEVICE(0x0CF3, 0x311D) }, @@ -107,6 +108,7 @@ MODULE_DEVICE_TABLE(usb, ath3k_table); static struct usb_device_id ath3k_blist_tbl[] = { /* Atheros AR3012 with sflash firmware*/ + { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e547851..11ac303 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -131,6 +131,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE }, /* Atheros 3012 with sflash firmware */ + { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, -- cgit v1.1 From f7db706b132f11c79ae1d74b2382e0926cf31644 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Thu, 14 Mar 2013 10:03:03 +0100 Subject: ARM: 7674/1: smp: Avoid dummy clockevent being preferred over real hardware clock-event With recent arm broadcast time clean-up from Mark Rutland, the dummy broadcast device is always registered with timer subsystem. And since the rating of the dummy clock event is very high, it may be preferred over a real clock event. This is a change in behavior from past and not an intended one. So reduce the rating of the dummy clock-event so that real clock-event device is selected when available. Acked-by: Thomas Gleixner Acked-by: Mark Rutland Signed-off-by: Santosh Shilimkar Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 31644f1..79078ed 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -480,7 +480,7 @@ static void __cpuinit broadcast_timer_setup(struct clock_event_device *evt) evt->features = CLOCK_EVT_FEAT_ONESHOT | CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_DUMMY; - evt->rating = 400; + evt->rating = 100; evt->mult = 1; evt->set_mode = broadcast_timer_set_mode; -- cgit v1.1 From 2c36af0e559c0a0674ad846527116df41aa5f612 Mon Sep 17 00:00:00 2001 From: Hiroshi Doyu Date: Fri, 15 Mar 2013 07:54:11 +0100 Subject: ARM: 7675/1: amba: tegra-ahb: Fix build error w/ PM_SLEEP w/o PM_RUNTIME Make this depend on CONFIG_PM. This protection is necessary to not cause any build errors with any combination of PM features especially when supporting a new SoC where each PM features are being enabled one-by-one during its depelopment. Signed-off-by: Hiroshi Doyu Signed-off-by: Russell King --- drivers/amba/tegra-ahb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/amba/tegra-ahb.c b/drivers/amba/tegra-ahb.c index 093c435..1f44e56 100644 --- a/drivers/amba/tegra-ahb.c +++ b/drivers/amba/tegra-ahb.c @@ -158,7 +158,7 @@ int tegra_ahb_enable_smmu(struct device_node *dn) EXPORT_SYMBOL(tegra_ahb_enable_smmu); #endif -#ifdef CONFIG_PM_SLEEP +#ifdef CONFIG_PM static int tegra_ahb_suspend(struct device *dev) { int i; -- cgit v1.1 From 7cb035d9e619a8d20f5d3b9791f8cb5160d19e70 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Sun, 10 Mar 2013 13:56:08 +0200 Subject: mei: add mei_stop function to stop mei device mei_stop calls mei_reset with disabling the interrupts. It will have the same effect as the open code it replaces in the mei_remove. The reset sequence on remove is required for the Lynx Point LP devices to clean the reset state. mei_stop is called from mei_pci_suspend and mei_remove functions Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/init.c | 18 ++++++++++++++++ drivers/misc/mei/mei_dev.h | 1 + drivers/misc/mei/pci-me.c | 52 +++++++--------------------------------------- 3 files changed, 26 insertions(+), 45 deletions(-) diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c index 6ec5301..3561799 100644 --- a/drivers/misc/mei/init.c +++ b/drivers/misc/mei/init.c @@ -183,6 +183,24 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled) mei_cl_all_write_clear(dev); } +void mei_stop(struct mei_device *dev) +{ + dev_dbg(&dev->pdev->dev, "stopping the device.\n"); + + mutex_lock(&dev->device_lock); + + cancel_delayed_work(&dev->timer_work); + + mei_wd_stop(dev); + + dev->dev_state = MEI_DEV_POWER_DOWN; + mei_reset(dev, 0); + + mutex_unlock(&dev->device_lock); + + flush_scheduled_work(); +} + diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h index cb80166..9787381 100644 --- a/drivers/misc/mei/mei_dev.h +++ b/drivers/misc/mei/mei_dev.h @@ -381,6 +381,7 @@ static inline unsigned long mei_secs_to_jiffies(unsigned long sec) void mei_device_init(struct mei_device *dev); void mei_reset(struct mei_device *dev, int interrupts); int mei_hw_init(struct mei_device *dev); +void mei_stop(struct mei_device *dev); /* * MEI interrupt functions prototype diff --git a/drivers/misc/mei/pci-me.c b/drivers/misc/mei/pci-me.c index b40ec06..b8b5c9c 100644 --- a/drivers/misc/mei/pci-me.c +++ b/drivers/misc/mei/pci-me.c @@ -247,44 +247,14 @@ static void mei_remove(struct pci_dev *pdev) hw = to_me_hw(dev); - mutex_lock(&dev->device_lock); - - cancel_delayed_work(&dev->timer_work); - mei_wd_stop(dev); + dev_err(&pdev->dev, "stop\n"); + mei_stop(dev); mei_pdev = NULL; - if (dev->iamthif_cl.state == MEI_FILE_CONNECTED) { - dev->iamthif_cl.state = MEI_FILE_DISCONNECTING; - mei_cl_disconnect(&dev->iamthif_cl); - } - if (dev->wd_cl.state == MEI_FILE_CONNECTED) { - dev->wd_cl.state = MEI_FILE_DISCONNECTING; - mei_cl_disconnect(&dev->wd_cl); - } - - /* Unregistering watchdog device */ mei_watchdog_unregister(dev); - /* remove entry if already in list */ - dev_dbg(&pdev->dev, "list del iamthif and wd file list.\n"); - - if (dev->open_handle_count > 0) - dev->open_handle_count--; - mei_cl_unlink(&dev->wd_cl); - - if (dev->open_handle_count > 0) - dev->open_handle_count--; - mei_cl_unlink(&dev->iamthif_cl); - - dev->iamthif_current_cb = NULL; - dev->me_clients_num = 0; - - mutex_unlock(&dev->device_lock); - - flush_scheduled_work(); - /* disable interrupts */ mei_disable_interrupts(dev); @@ -308,28 +278,20 @@ static int mei_pci_suspend(struct device *device) { struct pci_dev *pdev = to_pci_dev(device); struct mei_device *dev = pci_get_drvdata(pdev); - int err; if (!dev) return -ENODEV; - mutex_lock(&dev->device_lock); - cancel_delayed_work(&dev->timer_work); + dev_err(&pdev->dev, "suspend\n"); - /* Stop watchdog if exists */ - err = mei_wd_stop(dev); - /* Set new mei state */ - if (dev->dev_state == MEI_DEV_ENABLED || - dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) { - dev->dev_state = MEI_DEV_POWER_DOWN; - mei_reset(dev, 0); - } - mutex_unlock(&dev->device_lock); + mei_stop(dev); + + mei_disable_interrupts(dev); free_irq(pdev->irq, dev); pci_disable_msi(pdev); - return err; + return 0; } static int mei_pci_resume(struct device *device) -- cgit v1.1 From 68f8ea184bf7a552b59a38c4b0c7dc243822d2d5 Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Sun, 10 Mar 2013 13:56:07 +0200 Subject: mei: ME hardware reset needs to be synchronized This fixes failure during initialization on Lynx Point LP devices. ME driver needs to release the device from the reset only after the FW has completed its flow and indicated it by delivering an interrupt to the host. This is the correct behavior for all the ME devices yet the the previous versions are less susceptive to the implementation that ignored FW reset completion indication. We add mei_me_hw_reset_release function which is called after reset from the interrupt thread or directly from mei_reset during power down. Signed-off-by: Tomas Winkler Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/hw-me.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 45ea718..642c622 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -152,6 +152,20 @@ static void mei_me_intr_disable(struct mei_device *dev) } /** + * mei_me_hw_reset_release - release device from the reset + * + * @dev: the device structure + */ +static void mei_me_hw_reset_release(struct mei_device *dev) +{ + struct mei_me_hw *hw = to_me_hw(dev); + u32 hcsr = mei_hcsr_read(hw); + + hcsr |= H_IG; + hcsr &= ~H_RST; + mei_hcsr_set(hw, hcsr); +} +/** * mei_me_hw_reset - resets fw via mei csr register. * * @dev: the device structure @@ -169,18 +183,14 @@ static void mei_me_hw_reset(struct mei_device *dev, bool intr_enable) if (intr_enable) hcsr |= H_IE; else - hcsr &= ~H_IE; - - mei_hcsr_set(hw, hcsr); - - hcsr = mei_hcsr_read(hw) | H_IG; - hcsr &= ~H_RST; + hcsr |= ~H_IE; mei_hcsr_set(hw, hcsr); - hcsr = mei_hcsr_read(hw); + if (dev->dev_state == MEI_DEV_POWER_DOWN) + mei_me_hw_reset_release(dev); - dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", hcsr); + dev_dbg(&dev->pdev->dev, "current HCSR = 0x%08x.\n", mei_hcsr_read(hw)); } /** @@ -466,7 +476,8 @@ irqreturn_t mei_me_irq_thread_handler(int irq, void *dev_id) mutex_unlock(&dev->device_lock); return IRQ_HANDLED; } else { - dev_dbg(&dev->pdev->dev, "FW not ready.\n"); + dev_dbg(&dev->pdev->dev, "Reset Completed.\n"); + mei_me_hw_reset_release(dev); mutex_unlock(&dev->device_lock); return IRQ_HANDLED; } -- cgit v1.1 From 25e9789ddd9d14a8971f4a421d04f282719ab733 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 15 Mar 2013 12:58:20 -0600 Subject: vfio: include for kmalloc The vfio drivers call kmalloc or kzalloc, but do not include , which causes build errors on ARM. Signed-off-by: Arnd Bergmann Signed-off-by: Alex Williamson Cc: kvm@vger.kernel.org --- drivers/vfio/pci/vfio_pci_config.c | 1 + drivers/vfio/pci/vfio_pci_intrs.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_config.c b/drivers/vfio/pci/vfio_pci_config.c index 964ff22..aeb00fc 100644 --- a/drivers/vfio/pci/vfio_pci_config.c +++ b/drivers/vfio/pci/vfio_pci_config.c @@ -27,6 +27,7 @@ #include #include #include +#include #include "vfio_pci_private.h" diff --git a/drivers/vfio/pci/vfio_pci_intrs.c b/drivers/vfio/pci/vfio_pci_intrs.c index 3639371..a965091 100644 --- a/drivers/vfio/pci/vfio_pci_intrs.c +++ b/drivers/vfio/pci/vfio_pci_intrs.c @@ -22,6 +22,7 @@ #include #include #include +#include #include "vfio_pci_private.h" -- cgit v1.1 From 00eed9c814cb8f281be6f0f5d8f45025dc0a97eb Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 4 Mar 2013 17:14:43 +0100 Subject: USB: xhci: correctly enable interrupts xhci has its own interrupt enabling routine, which will try to use MSI-X/MSI if present. So the usb core shouldn't try to enable legacy interrupts; on some machines the xhci legacy IRQ setting is invalid. v3: Be careful to not break XHCI_BROKEN_MSI workaround (by trenn) Cc: Bjorn Helgaas Cc: Oliver Neukum Cc: Thomas Renninger Cc: Yinghai Lu Cc: Frederik Himpe Cc: David Haerdeman Cc: Alan Stern Acked-by: Sarah Sharp Reviewed-by: Thomas Renninger Signed-off-by: Hannes Reinecke Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd-pci.c | 23 ++++++++++++++--------- drivers/usb/host/xhci.c | 3 ++- 2 files changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 622b4a4..2b487d4 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -173,6 +173,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) struct hc_driver *driver; struct usb_hcd *hcd; int retval; + int hcd_irq = 0; if (usb_disabled()) return -ENODEV; @@ -187,15 +188,19 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) return -ENODEV; dev->current_state = PCI_D0; - /* The xHCI driver supports MSI and MSI-X, - * so don't fail if the BIOS doesn't provide a legacy IRQ. + /* + * The xHCI driver has its own irq management + * make sure irq setup is not touched for xhci in generic hcd code */ - if (!dev->irq && (driver->flags & HCD_MASK) != HCD_USB3) { - dev_err(&dev->dev, - "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", - pci_name(dev)); - retval = -ENODEV; - goto disable_pci; + if ((driver->flags & HCD_MASK) != HCD_USB3) { + if (!dev->irq) { + dev_err(&dev->dev, + "Found HC with no IRQ. Check BIOS/PCI %s setup!\n", + pci_name(dev)); + retval = -ENODEV; + goto disable_pci; + } + hcd_irq = dev->irq; } hcd = usb_create_hcd(driver, &dev->dev, pci_name(dev)); @@ -245,7 +250,7 @@ int usb_hcd_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) pci_set_master(dev); - retval = usb_add_hcd(hcd, dev->irq, IRQF_SHARED); + retval = usb_add_hcd(hcd, hcd_irq, IRQF_SHARED); if (retval != 0) goto unmap_registers; set_hs_companion(dev, hcd); diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index f1f01a8..849470b 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -350,7 +350,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd) * generate interrupts. Don't even try to enable MSI. */ if (xhci->quirks & XHCI_BROKEN_MSI) - return 0; + goto legacy_irq; /* unregister the legacy interrupt */ if (hcd->irq) @@ -371,6 +371,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd) return -EINVAL; } + legacy_irq: /* fall back to legacy interrupt*/ ret = request_irq(pdev->irq, &usb_hcd_irq, IRQF_SHARED, hcd->irq_descr, hcd); -- cgit v1.1 From 29f86e66428ee083aec106cca1748dc63d98ce23 Mon Sep 17 00:00:00 2001 From: Dmitry Artamonow Date: Sat, 9 Mar 2013 20:30:58 +0400 Subject: usb-storage: add unusual_devs entry for Samsung YP-Z3 mp3 player Device stucks on filesystem writes, unless following quirk is passed: echo 04e8:5136:m > /sys/module/usb_storage/parameters/quirks Add corresponding entry to unusual_devs.h Signed-off-by: Dmitry Artamonow Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/storage/unusual_devs.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index da04a07..179933528 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -496,6 +496,13 @@ UNUSUAL_DEV( 0x04e8, 0x5122, 0x0000, 0x9999, USB_SC_DEVICE, USB_PR_DEVICE, NULL, US_FL_MAX_SECTORS_64 | US_FL_BULK_IGNORE_TAG), +/* Added by Dmitry Artamonow */ +UNUSUAL_DEV( 0x04e8, 0x5136, 0x0000, 0x9999, + "Samsung", + "YP-Z3", + USB_SC_DEVICE, USB_PR_DEVICE, NULL, + US_FL_MAX_SECTORS_64), + /* Entry and supporting patch by Theodore Kilgore . * Device uses standards-violating 32-byte Bulk Command Block Wrappers and * reports itself as "Proprietary SCSI Bulk." Cf. device entry 0x084d:0x0011. -- cgit v1.1 From 2a40f324541ee61c22146214349c2ce9f5c30bcf Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 15 Mar 2013 14:40:26 -0400 Subject: USB: EHCI: fix regression during bus resume This patch (as1663) fixes a regression caused by commit 6e0c3339a6f19d748f16091d0a05adeb1e1f822b (USB: EHCI: unlink one async QH at a time). In order to avoid keeping multiple QHs in an unusable intermediate state, that commit changed unlink_empty_async() so that it unlinks only one empty QH at a time. However, when the EHCI root hub is suspended, _all_ async QHs need to be unlinked. ehci_bus_suspend() used to do this by calling unlink_empty_async(), but now this only unlinks one of the QHs, not all of them. The symptom is that when the root hub is resumed, USB communications don't work for some period of time. This is because ehci-hcd doesn't realize it needs to restart the async schedule; it assumes that because some QHs are already on the schedule, the schedule must be running. The easiest way to fix the problem is add a new function that unlinks all the async QHs when the root hub is suspended. This patch should be applied to all kernels that have the 6e0c3339a6f1 commit. Signed-off-by: Alan Stern Reported-and-tested-by: Adrian Bassett Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 1 + drivers/usb/host/ehci-hub.c | 2 +- drivers/usb/host/ehci-q.c | 13 +++++++++++++ 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 5726cb1..416a6dc 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -302,6 +302,7 @@ static void ehci_quiesce (struct ehci_hcd *ehci) static void end_unlink_async(struct ehci_hcd *ehci); static void unlink_empty_async(struct ehci_hcd *ehci); +static void unlink_empty_async_suspended(struct ehci_hcd *ehci); static void ehci_work(struct ehci_hcd *ehci); static void start_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh); static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh); diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c index 4d3b294..7d06e77 100644 --- a/drivers/usb/host/ehci-hub.c +++ b/drivers/usb/host/ehci-hub.c @@ -328,7 +328,7 @@ static int ehci_bus_suspend (struct usb_hcd *hcd) ehci->rh_state = EHCI_RH_SUSPENDED; end_unlink_async(ehci); - unlink_empty_async(ehci); + unlink_empty_async_suspended(ehci); ehci_handle_intr_unlinks(ehci); end_free_itds(ehci); diff --git a/drivers/usb/host/ehci-q.c b/drivers/usb/host/ehci-q.c index 5464665..23d1369 100644 --- a/drivers/usb/host/ehci-q.c +++ b/drivers/usb/host/ehci-q.c @@ -1316,6 +1316,19 @@ static void unlink_empty_async(struct ehci_hcd *ehci) } } +/* The root hub is suspended; unlink all the async QHs */ +static void unlink_empty_async_suspended(struct ehci_hcd *ehci) +{ + struct ehci_qh *qh; + + while (ehci->async->qh_next.qh) { + qh = ehci->async->qh_next.qh; + WARN_ON(!list_empty(&qh->qtd_list)); + single_unlink_async(ehci, qh); + } + start_iaa_cycle(ehci, false); +} + /* makes sure the async qh will become idle */ /* caller must own ehci->lock */ -- cgit v1.1 From 347e0899b1c75d907f01ac883ca38d37fe9bfa42 Mon Sep 17 00:00:00 2001 From: Andy King Date: Thu, 7 Mar 2013 07:29:08 -0800 Subject: VMCI: Fix process-to-process DRGAMs. When sending between processes, we always schedule a work item. Our work info struct has the message embedded in the middle, which means that we end up overwriting subsequent fields when we copy the (variable-length) message into it. Move it to the end of the struct. Acked-by: Dmitry Torokhov Signed-off-by: Andy King Signed-off-by: Greg Kroah-Hartman --- drivers/misc/vmw_vmci/vmci_datagram.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/misc/vmw_vmci/vmci_datagram.c b/drivers/misc/vmw_vmci/vmci_datagram.c index ed5c433..f3cdd90 100644 --- a/drivers/misc/vmw_vmci/vmci_datagram.c +++ b/drivers/misc/vmw_vmci/vmci_datagram.c @@ -42,9 +42,11 @@ struct datagram_entry { struct delayed_datagram_info { struct datagram_entry *entry; - struct vmci_datagram msg; struct work_struct work; bool in_dg_host_queue; + /* msg and msg_payload must be together. */ + struct vmci_datagram msg; + u8 msg_payload[]; }; /* Number of in-flight host->host datagrams */ -- cgit v1.1 From 503bded92da283b2f31d87e054c4c6d30c3c2340 Mon Sep 17 00:00:00 2001 From: Pawel Wieczorkiewicz Date: Wed, 20 Feb 2013 17:26:20 +0100 Subject: tty: atmel_serial_probe(): index of atmel_ports[] fix Index of atmel_ports[ATMEL_MAX_UART] should be smaller than ATMEL_MAX_UART. Signed-off-by: Pawel Wieczorkiewicz Acked-by: Nicolas Ferre Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/atmel_serial.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index d4a7c24..3467462 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -158,7 +158,7 @@ struct atmel_uart_port { }; static struct atmel_uart_port atmel_ports[ATMEL_MAX_UART]; -static unsigned long atmel_ports_in_use; +static DECLARE_BITMAP(atmel_ports_in_use, ATMEL_MAX_UART); #ifdef SUPPORT_SYSRQ static struct console atmel_console; @@ -1769,15 +1769,14 @@ static int atmel_serial_probe(struct platform_device *pdev) if (ret < 0) /* port id not found in platform data nor device-tree aliases: * auto-enumerate it */ - ret = find_first_zero_bit(&atmel_ports_in_use, - sizeof(atmel_ports_in_use)); + ret = find_first_zero_bit(atmel_ports_in_use, ATMEL_MAX_UART); - if (ret > ATMEL_MAX_UART) { + if (ret >= ATMEL_MAX_UART) { ret = -ENODEV; goto err; } - if (test_and_set_bit(ret, &atmel_ports_in_use)) { + if (test_and_set_bit(ret, atmel_ports_in_use)) { /* port already in use */ ret = -EBUSY; goto err; @@ -1857,7 +1856,7 @@ static int atmel_serial_remove(struct platform_device *pdev) /* "port" is allocated statically, so we shouldn't free it */ - clear_bit(port->line, &atmel_ports_in_use); + clear_bit(port->line, atmel_ports_in_use); clk_put(atmel_port->clk); -- cgit v1.1 From 8b5c913f7ee6464849570bacb6bcd9ef0eaf7dce Mon Sep 17 00:00:00 2001 From: Wang YanQing Date: Tue, 5 Mar 2013 23:16:48 +0800 Subject: serial: 8250_pci: Add WCH CH352 quirk to avoid Xscale detection The code in 8250.c for detecting ARM/XScale UARTs says: * Try writing and reading the UART_IER_UUE bit (b6). * If it works, this is probably one of the Xscale platform's * internal UARTs. If the above passes, it then goes on to: * It's an Xscale. * We'll leave the UART_IER_UUE bit set to 1 (enabled). However, the CH352 uses the UART_IER_UUE as the LOWPOWER function, so it is readable and writable. According to the datasheet: "LOWPOWER:When the bit is 1, close the internal benchmark clock of serial port to set into low-power status. So it essentially gets mis-detected as Xscale, and gets powered down in the process. The device in question where this was seen is listed by lspci as: Serial controller: Device 4348:3253 (rev 10) (prog-if 02 [16550]) Re-using the 353 quirk which just sets flags to fixed and type to 16550 is suitable for fixing the 352 as well. Signed-off-by: Wang YanQing Signed-off-by: Paul Gortmaker Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pci.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c index aa76825..26e3a97 100644 --- a/drivers/tty/serial/8250/8250_pci.c +++ b/drivers/tty/serial/8250/8250_pci.c @@ -1554,6 +1554,7 @@ pci_wch_ch353_setup(struct serial_private *priv, #define PCI_DEVICE_ID_PLX_CRONYX_OMEGA 0xc001 #define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d #define PCI_VENDOR_ID_WCH 0x4348 +#define PCI_DEVICE_ID_WCH_CH352_2S 0x3253 #define PCI_DEVICE_ID_WCH_CH353_4S 0x3453 #define PCI_DEVICE_ID_WCH_CH353_2S1PF 0x5046 #define PCI_DEVICE_ID_WCH_CH353_2S1P 0x7053 @@ -2172,6 +2173,14 @@ static struct pci_serial_quirk pci_serial_quirks[] __refdata = { .subdevice = PCI_ANY_ID, .setup = pci_wch_ch353_setup, }, + /* WCH CH352 2S card (16550 clone) */ + { + .vendor = PCI_VENDOR_ID_WCH, + .device = PCI_DEVICE_ID_WCH_CH352_2S, + .subvendor = PCI_ANY_ID, + .subdevice = PCI_ANY_ID, + .setup = pci_wch_ch353_setup, + }, /* * ASIX devices with FIFO bug */ @@ -4870,6 +4879,10 @@ static struct pci_device_id serial_pci_tbl[] = { PCI_ANY_ID, PCI_ANY_ID, 0, 0, pbn_b0_bt_2_115200 }, + { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH352_2S, + PCI_ANY_ID, PCI_ANY_ID, + 0, 0, pbn_b0_bt_2_115200 }, + /* * Commtech, Inc. Fastcom adapters */ -- cgit v1.1 From fa3daf9aa74a3ac1c87d8188a43d283d06720032 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 11 Mar 2013 15:32:26 -0400 Subject: drm/radeon: fix S/R on VM systems (cayman/TN/SI) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We weren't properly tearing down the VM sub-alloctor on suspend leading to bogus VM PTs on resume. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=60439 Reviewed-by: Christian König Tested-by: Dmitry Cherkasov Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/ni.c | 1 + drivers/gpu/drm/radeon/si.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index d4c633e1..e77c927 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -1771,6 +1771,7 @@ int cayman_resume(struct radeon_device *rdev) int cayman_suspend(struct radeon_device *rdev) { r600_audio_fini(rdev); + radeon_vm_manager_fini(rdev); cayman_cp_enable(rdev, false); cayman_dma_stop(rdev); evergreen_irq_suspend(rdev); diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index 9128120..bafbe32 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -4469,6 +4469,7 @@ int si_resume(struct radeon_device *rdev) int si_suspend(struct radeon_device *rdev) { + radeon_vm_manager_fini(rdev); si_cp_enable(rdev, false); cayman_dma_stop(rdev); si_irq_suspend(rdev); -- cgit v1.1 From 8f612b23a17dce86fef75407e698de6243cc99a1 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Mon, 11 Mar 2013 19:28:39 -0400 Subject: drm/radeon: fix backend map setup on 1 RB trinity boards Need to adjust the backend map depending on which RB is enabled. This is the trinity equivalent of: f7eb97300832f4fe5fe916c5d84cd2e25169330e May fix: https://bugs.freedesktop.org/show_bug.cgi?id=57919 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/ni.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index e77c927..a7d3de73 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -616,11 +616,22 @@ static void cayman_gpu_init(struct radeon_device *rdev) WREG32(DMA_TILING_CONFIG + DMA0_REGISTER_OFFSET, gb_addr_config); WREG32(DMA_TILING_CONFIG + DMA1_REGISTER_OFFSET, gb_addr_config); - tmp = gb_addr_config & NUM_PIPES_MASK; - tmp = r6xx_remap_render_backend(rdev, tmp, - rdev->config.cayman.max_backends_per_se * - rdev->config.cayman.max_shader_engines, - CAYMAN_MAX_BACKENDS, disabled_rb_mask); + if ((rdev->config.cayman.max_backends_per_se == 1) && + (rdev->flags & RADEON_IS_IGP)) { + if ((disabled_rb_mask & 3) == 1) { + /* RB0 disabled, RB1 enabled */ + tmp = 0x11111111; + } else { + /* RB1 disabled, RB0 enabled */ + tmp = 0x00000000; + } + } else { + tmp = gb_addr_config & NUM_PIPES_MASK; + tmp = r6xx_remap_render_backend(rdev, tmp, + rdev->config.cayman.max_backends_per_se * + rdev->config.cayman.max_shader_engines, + CAYMAN_MAX_BACKENDS, disabled_rb_mask); + } WREG32(GB_BACKEND_MAP, tmp); cgts_tcc_disable = 0xffff0000; -- cgit v1.1 From fa8d387dc3f62062a6b4afbbb2a3438094fd8584 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 12 Mar 2013 12:53:13 -0400 Subject: drm/radeon/benchmark: make sure bo blit copy exists before using it MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes a segfault on asics without a blit callback. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=62239 Reviewed-by: Michel Dänzer Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_benchmark.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c index bedda9c..a2f0c24 100644 --- a/drivers/gpu/drm/radeon/radeon_benchmark.c +++ b/drivers/gpu/drm/radeon/radeon_benchmark.c @@ -135,13 +135,15 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size, sdomain, ddomain, "dma"); } - time = radeon_benchmark_do_move(rdev, size, saddr, daddr, - RADEON_BENCHMARK_COPY_BLIT, n); - if (time < 0) - goto out_cleanup; - if (time > 0) - radeon_benchmark_log_results(n, size, time, - sdomain, ddomain, "blit"); + if (rdev->asic->copy.blit) { + time = radeon_benchmark_do_move(rdev, size, saddr, daddr, + RADEON_BENCHMARK_COPY_BLIT, n); + if (time < 0) + goto out_cleanup; + if (time > 0) + radeon_benchmark_log_results(n, size, time, + sdomain, ddomain, "blit"); + } out_cleanup: if (sobj) { -- cgit v1.1 From 271e53dcffa527c853b4f1b0cdedd10bef406a22 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Tue, 12 Mar 2013 12:55:56 -0400 Subject: drm/radeon/benchmark: allow same domains for dma copy MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove old comment and allow benchmarking moves within the same memory domain for both dma and blit methods. Reviewed-by: Michel Dänzer Signed-off-by: Alex Deucher --- drivers/gpu/drm/radeon/radeon_benchmark.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_benchmark.c b/drivers/gpu/drm/radeon/radeon_benchmark.c index a2f0c24..6e05a2e 100644 --- a/drivers/gpu/drm/radeon/radeon_benchmark.c +++ b/drivers/gpu/drm/radeon/radeon_benchmark.c @@ -122,10 +122,7 @@ static void radeon_benchmark_move(struct radeon_device *rdev, unsigned size, goto out_cleanup; } - /* r100 doesn't have dma engine so skip the test */ - /* also, VRAM-to-VRAM test doesn't make much sense for DMA */ - /* skip it as well if domains are the same */ - if ((rdev->asic->copy.dma) && (sdomain != ddomain)) { + if (rdev->asic->copy.dma) { time = radeon_benchmark_do_move(rdev, size, saddr, daddr, RADEON_BENCHMARK_COPY_DMA, n); if (time < 0) -- cgit v1.1 From e4d170633fde379f39a90f8a5e7eb619b5d1144d Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 8 Mar 2013 13:44:15 -0500 Subject: drm/radeon: add support for Richland APUs Richland APUs are a new version of the Trinity APUs with performance and power management improvements. Reviewed-by: Jerome Glisse Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/ni.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c index a7d3de73..27769e7 100644 --- a/drivers/gpu/drm/radeon/ni.c +++ b/drivers/gpu/drm/radeon/ni.c @@ -468,13 +468,19 @@ static void cayman_gpu_init(struct radeon_device *rdev) (rdev->pdev->device == 0x9907) || (rdev->pdev->device == 0x9908) || (rdev->pdev->device == 0x9909) || + (rdev->pdev->device == 0x990B) || + (rdev->pdev->device == 0x990C) || + (rdev->pdev->device == 0x990F) || (rdev->pdev->device == 0x9910) || - (rdev->pdev->device == 0x9917)) { + (rdev->pdev->device == 0x9917) || + (rdev->pdev->device == 0x9999)) { rdev->config.cayman.max_simds_per_se = 6; rdev->config.cayman.max_backends_per_se = 2; } else if ((rdev->pdev->device == 0x9903) || (rdev->pdev->device == 0x9904) || (rdev->pdev->device == 0x990A) || + (rdev->pdev->device == 0x990D) || + (rdev->pdev->device == 0x990E) || (rdev->pdev->device == 0x9913) || (rdev->pdev->device == 0x9918)) { rdev->config.cayman.max_simds_per_se = 4; @@ -483,6 +489,9 @@ static void cayman_gpu_init(struct radeon_device *rdev) (rdev->pdev->device == 0x9990) || (rdev->pdev->device == 0x9991) || (rdev->pdev->device == 0x9994) || + (rdev->pdev->device == 0x9995) || + (rdev->pdev->device == 0x9996) || + (rdev->pdev->device == 0x999A) || (rdev->pdev->device == 0x99A0)) { rdev->config.cayman.max_simds_per_se = 3; rdev->config.cayman.max_backends_per_se = 1; -- cgit v1.1 From b75bbaa038ffc426e88ea3df6c4ae11834fc3e4f Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 8 Mar 2013 13:36:54 -0500 Subject: drm/radeon: add Richland pci ids Reviewed-by: Jerome Glisse Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- include/drm/drm_pciids.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/include/drm/drm_pciids.h b/include/drm/drm_pciids.h index a386b0b..918e8fe 100644 --- a/include/drm/drm_pciids.h +++ b/include/drm/drm_pciids.h @@ -581,7 +581,11 @@ {0x1002, 0x9908, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9909, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x990A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ - {0x1002, 0x990F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x990B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x990C, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x990D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x990E, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x990F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9910, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9913, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9917, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ @@ -592,6 +596,13 @@ {0x1002, 0x9992, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9993, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x9994, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x9995, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x9996, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x9997, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x9998, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x9999, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x999A, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ + {0x1002, 0x999B, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x99A0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x99A2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_IS_MOBILITY|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ {0x1002, 0x99A4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_ARUBA|RADEON_NEW_MEMMAP|RADEON_IS_IGP}, \ -- cgit v1.1 From 3b2775942d6ccb14342f3aae55f22fbbfea8db14 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Fri, 15 Mar 2013 08:46:39 -0600 Subject: Btrfs: fix warning of free_extent_map Users report that an extent map's list is still linked when it's actually going to be freed from cache. The story is that a) when we're going to drop an extent map and may split this large one into smaller ems, and if this large one is flagged as EXTENT_FLAG_LOGGING which means that it's on the list to be logged, then the smaller ems split from it will also be flagged as EXTENT_FLAG_LOGGING, and this is _not_ expected. b) we'll keep ems from unlinking the list and freeing when they are flagged with EXTENT_FLAG_LOGGING, because the log code holds one reference. The end result is the warning, but the truth is that we set the flag EXTENT_FLAG_LOGGING only during fsync. So clear flag EXTENT_FLAG_LOGGING for extent maps split from a large one. Reported-by: Johannes Hirte Reported-by: Darrick J. Wong Signed-off-by: Liu Bo Signed-off-by: Chris Mason --- fs/btrfs/file.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 83c790d..7bdb47f 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -591,6 +591,7 @@ void btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end, } compressed = test_bit(EXTENT_FLAG_COMPRESSED, &em->flags); clear_bit(EXTENT_FLAG_PINNED, &em->flags); + clear_bit(EXTENT_FLAG_LOGGING, &flags); remove_extent_mapping(em_tree, em); if (no_splits) goto next; -- cgit v1.1 From 1eef1282549d7accdd33ee36d409b039b1f911fb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 11 Mar 2013 09:07:46 -0300 Subject: amd64_edac: Correct DIMM sizes We were filling the csrow size with a wrong value. 16a528ee3975 ("EDAC: Fix csrow size reported in sysfs") tried to address the issue. It fixed the report with the old API but not with the new one. Correct it for the new API too. Signed-off-by: Mauro Carvalho Chehab [ make it a per-csrow accounting regardless of ->channel_count ] Signed-off-by: Borislav Petkov --- drivers/edac/amd64_edac.c | 14 +++++++++----- drivers/edac/edac_mc_sysfs.c | 13 +++---------- include/linux/edac.h | 1 - 3 files changed, 12 insertions(+), 16 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 910b011..532de77 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2048,12 +2048,18 @@ static int init_csrows(struct mem_ctl_info *mci) edac_dbg(1, "MC node: %d, csrow: %d\n", pvt->mc_node_id, i); - if (row_dct0) + if (row_dct0) { nr_pages = amd64_csrow_nr_pages(pvt, 0, i); + csrow->channels[0]->dimm->nr_pages = nr_pages; + } /* K8 has only one DCT */ - if (boot_cpu_data.x86 != 0xf && row_dct1) - nr_pages += amd64_csrow_nr_pages(pvt, 1, i); + if (boot_cpu_data.x86 != 0xf && row_dct1) { + int row_dct1_pages = amd64_csrow_nr_pages(pvt, 1, i); + + csrow->channels[1]->dimm->nr_pages = row_dct1_pages; + nr_pages += row_dct1_pages; + } mtype = amd64_determine_memory_type(pvt, i); @@ -2072,9 +2078,7 @@ static int init_csrows(struct mem_ctl_info *mci) dimm = csrow->channels[j]->dimm; dimm->mtype = mtype; dimm->edac_mode = edac_mode; - dimm->nr_pages = nr_pages; } - csrow->nr_pages = nr_pages; } return empty; diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 0cbf670..4c50a47 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -180,9 +180,6 @@ static ssize_t csrow_size_show(struct device *dev, int i; u32 nr_pages = 0; - if (csrow->mci->csbased) - return sprintf(data, "%u\n", PAGES_TO_MiB(csrow->nr_pages)); - for (i = 0; i < csrow->nr_channels; i++) nr_pages += csrow->channels[i]->dimm->nr_pages; return sprintf(data, "%u\n", PAGES_TO_MiB(nr_pages)); @@ -778,14 +775,10 @@ static ssize_t mci_size_mb_show(struct device *dev, for (csrow_idx = 0; csrow_idx < mci->nr_csrows; csrow_idx++) { struct csrow_info *csrow = mci->csrows[csrow_idx]; - if (csrow->mci->csbased) { - total_pages += csrow->nr_pages; - } else { - for (j = 0; j < csrow->nr_channels; j++) { - struct dimm_info *dimm = csrow->channels[j]->dimm; + for (j = 0; j < csrow->nr_channels; j++) { + struct dimm_info *dimm = csrow->channels[j]->dimm; - total_pages += dimm->nr_pages; - } + total_pages += dimm->nr_pages; } } diff --git a/include/linux/edac.h b/include/linux/edac.h index 4fd4999..ab1ea98 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -561,7 +561,6 @@ struct csrow_info { u32 ue_count; /* Uncorrectable Errors for this csrow */ u32 ce_count; /* Correctable Errors for this csrow */ - u32 nr_pages; /* combined pages count of all channels */ struct mem_ctl_info *mci; /* the parent */ -- cgit v1.1 From 9713faecff3d071de1208b081d4943b002e9cb1c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 11 Mar 2013 09:28:48 -0300 Subject: EDAC: Merge mci.mem_is_per_rank with mci.csbased Both mci.mem_is_per_rank and mci.csbased denote the same thing: the memory controller is csrows based. Merge both fields into one. There's no need for the driver to actually fill it, as the core detects it by checking if one of the layers has the csrows type as part of the memory hierarchy: if (layers[i].type == EDAC_MC_LAYER_CHIP_SELECT) per_rank = true; Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Borislav Petkov --- drivers/edac/amd64_edac.c | 1 - drivers/edac/edac_mc.c | 6 +++--- drivers/edac/edac_mc_sysfs.c | 2 +- include/linux/edac.h | 6 ++---- 4 files changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 532de77..e1d13c4 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -2423,7 +2423,6 @@ static int amd64_init_one_instance(struct pci_dev *F2) mci->pvt_info = pvt; mci->pdev = &pvt->F2->dev; - mci->csbased = 1; setup_mci_misc_attrs(mci, fam_type); diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c index cdb81aa..27e86d9 100644 --- a/drivers/edac/edac_mc.c +++ b/drivers/edac/edac_mc.c @@ -86,7 +86,7 @@ static void edac_mc_dump_dimm(struct dimm_info *dimm, int number) edac_dimm_info_location(dimm, location, sizeof(location)); edac_dbg(4, "%s%i: %smapped as virtual row %d, chan %d\n", - dimm->mci->mem_is_per_rank ? "rank" : "dimm", + dimm->mci->csbased ? "rank" : "dimm", number, location, dimm->csrow, dimm->cschannel); edac_dbg(4, " dimm = %p\n", dimm); edac_dbg(4, " dimm->label = '%s'\n", dimm->label); @@ -341,7 +341,7 @@ struct mem_ctl_info *edac_mc_alloc(unsigned mc_num, memcpy(mci->layers, layers, sizeof(*layer) * n_layers); mci->nr_csrows = tot_csrows; mci->num_cschannel = tot_channels; - mci->mem_is_per_rank = per_rank; + mci->csbased = per_rank; /* * Alocate and fill the csrow/channels structs @@ -1235,7 +1235,7 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type, * incrementing the compat API counters */ edac_dbg(4, "%s csrows map: (%d,%d)\n", - mci->mem_is_per_rank ? "rank" : "dimm", + mci->csbased ? "rank" : "dimm", dimm->csrow, dimm->cschannel); if (row == -1) row = dimm->csrow; diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c index 4c50a47..5899a76 100644 --- a/drivers/edac/edac_mc_sysfs.c +++ b/drivers/edac/edac_mc_sysfs.c @@ -609,7 +609,7 @@ static int edac_create_dimm_object(struct mem_ctl_info *mci, device_initialize(&dimm->dev); dimm->dev.parent = &mci->dev; - if (mci->mem_is_per_rank) + if (mci->csbased) dev_set_name(&dimm->dev, "rank%d", index); else dev_set_name(&dimm->dev, "dimm%d", index); diff --git a/include/linux/edac.h b/include/linux/edac.h index ab1ea98..0b76327 100644 --- a/include/linux/edac.h +++ b/include/linux/edac.h @@ -675,11 +675,11 @@ struct mem_ctl_info { * sees memory sticks ("dimms"), and the ones that sees memory ranks. * All old memory controllers enumerate memories per rank, but most * of the recent drivers enumerate memories per DIMM, instead. - * When the memory controller is per rank, mem_is_per_rank is true. + * When the memory controller is per rank, csbased is true. */ unsigned n_layers; struct edac_mc_layer *layers; - bool mem_is_per_rank; + bool csbased; /* * DIMM info. Will eventually remove the entire csrows_info some day @@ -740,8 +740,6 @@ struct mem_ctl_info { u32 fake_inject_ue; u16 fake_inject_count; #endif - __u8 csbased : 1, /* csrow-based memory controller */ - __resv : 7; }; #endif -- cgit v1.1 From c95246c3a2ac796cfa43e76200ede59cb4a1644f Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Sat, 16 Mar 2013 08:22:25 +0100 Subject: Adding in EEH support to the IBM FlashSystem 70/80 device driver Changes in v2 include: o Fixed spelling of guarantee. o Fixed potential memory leak if slot reset fails out. o Changed list_for_each_entry_safe with list_for_each_entry. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/core.c | 203 +++++++++++++++++++++++++++++++++++++- drivers/block/rsxx/cregs.c | 59 +++++++++-- drivers/block/rsxx/dma.c | 216 ++++++++++++++++++++++++++++++----------- drivers/block/rsxx/rsxx_priv.h | 25 ++++- 4 files changed, 436 insertions(+), 67 deletions(-) diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index cbbdff1..93f2819 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include @@ -52,6 +53,13 @@ static DEFINE_IDA(rsxx_disk_ida); static DEFINE_SPINLOCK(rsxx_ida_lock); /*----------------- Interrupt Control & Handling -------------------*/ + +static void rsxx_mask_interrupts(struct rsxx_cardinfo *card) +{ + card->isr_mask = 0; + card->ier_mask = 0; +} + static void __enable_intr(unsigned int *mask, unsigned int intr) { *mask |= intr; @@ -71,7 +79,8 @@ static void __disable_intr(unsigned int *mask, unsigned int intr) */ void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr) { - if (unlikely(card->halt)) + if (unlikely(card->halt) || + unlikely(card->eeh_state)) return; __enable_intr(&card->ier_mask, intr); @@ -80,6 +89,9 @@ void rsxx_enable_ier(struct rsxx_cardinfo *card, unsigned int intr) void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr) { + if (unlikely(card->eeh_state)) + return; + __disable_intr(&card->ier_mask, intr); iowrite32(card->ier_mask, card->regmap + IER); } @@ -87,7 +99,8 @@ void rsxx_disable_ier(struct rsxx_cardinfo *card, unsigned int intr) void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card, unsigned int intr) { - if (unlikely(card->halt)) + if (unlikely(card->halt) || + unlikely(card->eeh_state)) return; __enable_intr(&card->isr_mask, intr); @@ -97,6 +110,9 @@ void rsxx_enable_ier_and_isr(struct rsxx_cardinfo *card, void rsxx_disable_ier_and_isr(struct rsxx_cardinfo *card, unsigned int intr) { + if (unlikely(card->eeh_state)) + return; + __disable_intr(&card->isr_mask, intr); __disable_intr(&card->ier_mask, intr); iowrite32(card->ier_mask, card->regmap + IER); @@ -115,6 +131,9 @@ static irqreturn_t rsxx_isr(int irq, void *pdata) do { reread_isr = 0; + if (unlikely(card->eeh_state)) + break; + isr = ioread32(card->regmap + ISR); if (isr == 0xffffffff) { /* @@ -304,6 +323,179 @@ static int card_shutdown(struct rsxx_cardinfo *card) return 0; } +static void rsxx_eeh_frozen(struct pci_dev *dev) +{ + struct rsxx_cardinfo *card = pci_get_drvdata(dev); + int i; + + dev_warn(&dev->dev, "IBM FlashSystem PCI: preparing for slot reset.\n"); + + card->eeh_state = 1; + rsxx_mask_interrupts(card); + + /* + * We need to guarantee that the write for eeh_state and masking + * interrupts does not become reordered. This will prevent a possible + * race condition with the EEH code. + */ + wmb(); + + pci_disable_device(dev); + + rsxx_eeh_save_issued_dmas(card); + + rsxx_eeh_save_issued_creg(card); + + for (i = 0; i < card->n_targets; i++) { + if (card->ctrl[i].status.buf) + pci_free_consistent(card->dev, STATUS_BUFFER_SIZE8, + card->ctrl[i].status.buf, + card->ctrl[i].status.dma_addr); + if (card->ctrl[i].cmd.buf) + pci_free_consistent(card->dev, COMMAND_BUFFER_SIZE8, + card->ctrl[i].cmd.buf, + card->ctrl[i].cmd.dma_addr); + } +} + +static void rsxx_eeh_failure(struct pci_dev *dev) +{ + struct rsxx_cardinfo *card = pci_get_drvdata(dev); + int i; + + dev_err(&dev->dev, "IBM FlashSystem PCI: disabling failed card.\n"); + + card->eeh_state = 1; + + for (i = 0; i < card->n_targets; i++) + del_timer_sync(&card->ctrl[i].activity_timer); + + rsxx_eeh_cancel_dmas(card); +} + +static int rsxx_eeh_fifo_flush_poll(struct rsxx_cardinfo *card) +{ + unsigned int status; + int iter = 0; + + /* We need to wait for the hardware to reset */ + while (iter++ < 10) { + status = ioread32(card->regmap + PCI_RECONFIG); + + if (status & RSXX_FLUSH_BUSY) { + ssleep(1); + continue; + } + + if (status & RSXX_FLUSH_TIMEOUT) + dev_warn(CARD_TO_DEV(card), "HW: flash controller timeout\n"); + return 0; + } + + /* Hardware failed resetting itself. */ + return -1; +} + +static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev, + enum pci_channel_state error) +{ + if (dev->revision < RSXX_EEH_SUPPORT) + return PCI_ERS_RESULT_NONE; + + if (error == pci_channel_io_perm_failure) { + rsxx_eeh_failure(dev); + return PCI_ERS_RESULT_DISCONNECT; + } + + rsxx_eeh_frozen(dev); + return PCI_ERS_RESULT_NEED_RESET; +} + +static pci_ers_result_t rsxx_slot_reset(struct pci_dev *dev) +{ + struct rsxx_cardinfo *card = pci_get_drvdata(dev); + unsigned long flags; + int i; + int st; + + dev_warn(&dev->dev, + "IBM FlashSystem PCI: recovering from slot reset.\n"); + + st = pci_enable_device(dev); + if (st) + goto failed_hw_setup; + + pci_set_master(dev); + + st = rsxx_eeh_fifo_flush_poll(card); + if (st) + goto failed_hw_setup; + + rsxx_dma_queue_reset(card); + + for (i = 0; i < card->n_targets; i++) { + st = rsxx_hw_buffers_init(dev, &card->ctrl[i]); + if (st) + goto failed_hw_buffers_init; + } + + if (card->config_valid) + rsxx_dma_configure(card); + + /* Clears the ISR register from spurious interrupts */ + st = ioread32(card->regmap + ISR); + + card->eeh_state = 0; + + st = rsxx_eeh_remap_dmas(card); + if (st) + goto failed_remap_dmas; + + spin_lock_irqsave(&card->irq_lock, flags); + if (card->n_targets & RSXX_MAX_TARGETS) + rsxx_enable_ier_and_isr(card, CR_INTR_ALL_G); + else + rsxx_enable_ier_and_isr(card, CR_INTR_ALL_C); + spin_unlock_irqrestore(&card->irq_lock, flags); + + rsxx_kick_creg_queue(card); + + for (i = 0; i < card->n_targets; i++) { + spin_lock(&card->ctrl[i].queue_lock); + if (list_empty(&card->ctrl[i].queue)) { + spin_unlock(&card->ctrl[i].queue_lock); + continue; + } + spin_unlock(&card->ctrl[i].queue_lock); + + queue_work(card->ctrl[i].issue_wq, + &card->ctrl[i].issue_dma_work); + } + + dev_info(&dev->dev, "IBM FlashSystem PCI: recovery complete.\n"); + + return PCI_ERS_RESULT_RECOVERED; + +failed_hw_buffers_init: +failed_remap_dmas: + for (i = 0; i < card->n_targets; i++) { + if (card->ctrl[i].status.buf) + pci_free_consistent(card->dev, + STATUS_BUFFER_SIZE8, + card->ctrl[i].status.buf, + card->ctrl[i].status.dma_addr); + if (card->ctrl[i].cmd.buf) + pci_free_consistent(card->dev, + COMMAND_BUFFER_SIZE8, + card->ctrl[i].cmd.buf, + card->ctrl[i].cmd.dma_addr); + } +failed_hw_setup: + rsxx_eeh_failure(dev); + return PCI_ERS_RESULT_DISCONNECT; + +} + /*----------------- Driver Initialization & Setup -------------------*/ /* Returns: 0 if the driver is compatible with the device -1 if the driver is NOT compatible with the device */ @@ -383,6 +575,7 @@ static int rsxx_pci_probe(struct pci_dev *dev, spin_lock_init(&card->irq_lock); card->halt = 0; + card->eeh_state = 0; spin_lock_irq(&card->irq_lock); rsxx_disable_ier_and_isr(card, CR_INTR_ALL); @@ -593,6 +786,11 @@ static void rsxx_pci_shutdown(struct pci_dev *dev) card_shutdown(card); } +static const struct pci_error_handlers rsxx_err_handler = { + .error_detected = rsxx_error_detected, + .slot_reset = rsxx_slot_reset, +}; + static DEFINE_PCI_DEVICE_TABLE(rsxx_pci_ids) = { {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS70_FLASH)}, {PCI_DEVICE(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_FS80_FLASH)}, @@ -608,6 +806,7 @@ static struct pci_driver rsxx_pci_driver = { .remove = rsxx_pci_remove, .suspend = rsxx_pci_suspend, .shutdown = rsxx_pci_shutdown, + .err_handler = &rsxx_err_handler, }; static int __init rsxx_core_init(void) diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 0539a25..4b5c020 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -58,7 +58,7 @@ static struct kmem_cache *creg_cmd_pool; #error Unknown endianess!!! Aborting... #endif -static void copy_to_creg_data(struct rsxx_cardinfo *card, +static int copy_to_creg_data(struct rsxx_cardinfo *card, int cnt8, void *buf, unsigned int stream) @@ -66,6 +66,9 @@ static void copy_to_creg_data(struct rsxx_cardinfo *card, int i = 0; u32 *data = buf; + if (unlikely(card->eeh_state)) + return -EIO; + for (i = 0; cnt8 > 0; i++, cnt8 -= 4) { /* * Firmware implementation makes it necessary to byte swap on @@ -76,10 +79,12 @@ static void copy_to_creg_data(struct rsxx_cardinfo *card, else iowrite32(data[i], card->regmap + CREG_DATA(i)); } + + return 0; } -static void copy_from_creg_data(struct rsxx_cardinfo *card, +static int copy_from_creg_data(struct rsxx_cardinfo *card, int cnt8, void *buf, unsigned int stream) @@ -87,6 +92,9 @@ static void copy_from_creg_data(struct rsxx_cardinfo *card, int i = 0; u32 *data = buf; + if (unlikely(card->eeh_state)) + return -EIO; + for (i = 0; cnt8 > 0; i++, cnt8 -= 4) { /* * Firmware implementation makes it necessary to byte swap on @@ -97,19 +105,32 @@ static void copy_from_creg_data(struct rsxx_cardinfo *card, else data[i] = ioread32(card->regmap + CREG_DATA(i)); } + + return 0; } static void creg_issue_cmd(struct rsxx_cardinfo *card, struct creg_cmd *cmd) { + int st; + + if (unlikely(card->eeh_state)) + return; + iowrite32(cmd->addr, card->regmap + CREG_ADD); iowrite32(cmd->cnt8, card->regmap + CREG_CNT); if (cmd->op == CREG_OP_WRITE) { - if (cmd->buf) - copy_to_creg_data(card, cmd->cnt8, - cmd->buf, cmd->stream); + if (cmd->buf) { + st = copy_to_creg_data(card, cmd->cnt8, + cmd->buf, cmd->stream); + if (st) + return; + } } + if (unlikely(card->eeh_state)) + return; + /* Setting the valid bit will kick off the command. */ iowrite32(cmd->op, card->regmap + CREG_CMD); } @@ -272,7 +293,7 @@ static void creg_cmd_done(struct work_struct *work) goto creg_done; } - copy_from_creg_data(card, cnt8, cmd->buf, cmd->stream); + st = copy_from_creg_data(card, cnt8, cmd->buf, cmd->stream); } creg_done: @@ -675,6 +696,32 @@ int rsxx_reg_access(struct rsxx_cardinfo *card, return 0; } +void rsxx_eeh_save_issued_creg(struct rsxx_cardinfo *card) +{ + struct creg_cmd *cmd = NULL; + + cmd = card->creg_ctrl.active_cmd; + card->creg_ctrl.active_cmd = NULL; + + if (cmd) { + del_timer_sync(&card->creg_ctrl.cmd_timer); + + spin_lock_bh(&card->creg_ctrl.lock); + list_add(&cmd->list, &card->creg_ctrl.queue); + card->creg_ctrl.q_depth++; + card->creg_ctrl.active = 0; + spin_unlock_bh(&card->creg_ctrl.lock); + } +} + +void rsxx_kick_creg_queue(struct rsxx_cardinfo *card) +{ + spin_lock_bh(&card->creg_ctrl.lock); + if (!list_empty(&card->creg_ctrl.queue)) + creg_kick_queue(card); + spin_unlock_bh(&card->creg_ctrl.lock); +} + /*------------ Initialization & Setup --------------*/ int rsxx_creg_setup(struct rsxx_cardinfo *card) { diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index efd75b55a..60d344d 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -81,9 +81,6 @@ enum rsxx_hw_status { HW_STATUS_FAULT = 0x08, }; -#define STATUS_BUFFER_SIZE8 4096 -#define COMMAND_BUFFER_SIZE8 4096 - static struct kmem_cache *rsxx_dma_pool; struct dma_tracker { @@ -122,7 +119,7 @@ static unsigned int rsxx_get_dma_tgt(struct rsxx_cardinfo *card, u64 addr8) return tgt; } -static void rsxx_dma_queue_reset(struct rsxx_cardinfo *card) +void rsxx_dma_queue_reset(struct rsxx_cardinfo *card) { /* Reset all DMA Command/Status Queues */ iowrite32(DMA_QUEUE_RESET, card->regmap + RESET); @@ -210,7 +207,8 @@ static void dma_intr_coal_auto_tune(struct rsxx_cardinfo *card) u32 q_depth = 0; u32 intr_coal; - if (card->config.data.intr_coal.mode != RSXX_INTR_COAL_AUTO_TUNE) + if (card->config.data.intr_coal.mode != RSXX_INTR_COAL_AUTO_TUNE || + unlikely(card->eeh_state)) return; for (i = 0; i < card->n_targets; i++) @@ -223,31 +221,26 @@ static void dma_intr_coal_auto_tune(struct rsxx_cardinfo *card) } /*----------------- RSXX DMA Handling -------------------*/ -static void rsxx_complete_dma(struct rsxx_cardinfo *card, +static void rsxx_complete_dma(struct rsxx_dma_ctrl *ctrl, struct rsxx_dma *dma, unsigned int status) { if (status & DMA_SW_ERR) - printk_ratelimited(KERN_ERR - "SW Error in DMA(cmd x%02x, laddr x%08x)\n", - dma->cmd, dma->laddr); + ctrl->stats.dma_sw_err++; if (status & DMA_HW_FAULT) - printk_ratelimited(KERN_ERR - "HW Fault in DMA(cmd x%02x, laddr x%08x)\n", - dma->cmd, dma->laddr); + ctrl->stats.dma_hw_fault++; if (status & DMA_CANCELLED) - printk_ratelimited(KERN_ERR - "DMA Cancelled(cmd x%02x, laddr x%08x)\n", - dma->cmd, dma->laddr); + ctrl->stats.dma_cancelled++; if (dma->dma_addr) - pci_unmap_page(card->dev, dma->dma_addr, get_dma_size(dma), + pci_unmap_page(ctrl->card->dev, dma->dma_addr, + get_dma_size(dma), dma->cmd == HW_CMD_BLK_WRITE ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); if (dma->cb) - dma->cb(card, dma->cb_data, status ? 1 : 0); + dma->cb(ctrl->card, dma->cb_data, status ? 1 : 0); kmem_cache_free(rsxx_dma_pool, dma); } @@ -330,14 +323,15 @@ static void rsxx_handle_dma_error(struct rsxx_dma_ctrl *ctrl, if (requeue_cmd) rsxx_requeue_dma(ctrl, dma); else - rsxx_complete_dma(ctrl->card, dma, status); + rsxx_complete_dma(ctrl, dma, status); } static void dma_engine_stalled(unsigned long data) { struct rsxx_dma_ctrl *ctrl = (struct rsxx_dma_ctrl *)data; - if (atomic_read(&ctrl->stats.hw_q_depth) == 0) + if (atomic_read(&ctrl->stats.hw_q_depth) == 0 || + unlikely(ctrl->card->eeh_state)) return; if (ctrl->cmd.idx != ioread32(ctrl->regmap + SW_CMD_IDX)) { @@ -369,7 +363,8 @@ static void rsxx_issue_dmas(struct work_struct *work) ctrl = container_of(work, struct rsxx_dma_ctrl, issue_dma_work); hw_cmd_buf = ctrl->cmd.buf; - if (unlikely(ctrl->card->halt)) + if (unlikely(ctrl->card->halt) || + unlikely(ctrl->card->eeh_state)) return; while (1) { @@ -397,7 +392,7 @@ static void rsxx_issue_dmas(struct work_struct *work) */ if (unlikely(ctrl->card->dma_fault)) { push_tracker(ctrl->trackers, tag); - rsxx_complete_dma(ctrl->card, dma, DMA_CANCELLED); + rsxx_complete_dma(ctrl, dma, DMA_CANCELLED); continue; } @@ -435,6 +430,12 @@ static void rsxx_issue_dmas(struct work_struct *work) atomic_add(cmds_pending, &ctrl->stats.hw_q_depth); mod_timer(&ctrl->activity_timer, jiffies + DMA_ACTIVITY_TIMEOUT); + + if (unlikely(ctrl->card->eeh_state)) { + del_timer_sync(&ctrl->activity_timer); + return; + } + iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX); } } @@ -453,7 +454,8 @@ static void rsxx_dma_done(struct work_struct *work) hw_st_buf = ctrl->status.buf; if (unlikely(ctrl->card->halt) || - unlikely(ctrl->card->dma_fault)) + unlikely(ctrl->card->dma_fault) || + unlikely(ctrl->card->eeh_state)) return; count = le16_to_cpu(hw_st_buf[ctrl->status.idx].count); @@ -498,7 +500,7 @@ static void rsxx_dma_done(struct work_struct *work) if (status) rsxx_handle_dma_error(ctrl, dma, status); else - rsxx_complete_dma(ctrl->card, dma, 0); + rsxx_complete_dma(ctrl, dma, 0); push_tracker(ctrl->trackers, tag); @@ -717,20 +719,54 @@ bvec_err: /*----------------- DMA Engine Initialization & Setup -------------------*/ +int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl) +{ + ctrl->status.buf = pci_alloc_consistent(dev, STATUS_BUFFER_SIZE8, + &ctrl->status.dma_addr); + ctrl->cmd.buf = pci_alloc_consistent(dev, COMMAND_BUFFER_SIZE8, + &ctrl->cmd.dma_addr); + if (ctrl->status.buf == NULL || ctrl->cmd.buf == NULL) + return -ENOMEM; + + memset(ctrl->status.buf, 0xac, STATUS_BUFFER_SIZE8); + iowrite32(lower_32_bits(ctrl->status.dma_addr), + ctrl->regmap + SB_ADD_LO); + iowrite32(upper_32_bits(ctrl->status.dma_addr), + ctrl->regmap + SB_ADD_HI); + + memset(ctrl->cmd.buf, 0x83, COMMAND_BUFFER_SIZE8); + iowrite32(lower_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_LO); + iowrite32(upper_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_HI); + + ctrl->status.idx = ioread32(ctrl->regmap + HW_STATUS_CNT); + if (ctrl->status.idx > RSXX_MAX_OUTSTANDING_CMDS) { + dev_crit(&dev->dev, "Failed reading status cnt x%x\n", + ctrl->status.idx); + return -EINVAL; + } + iowrite32(ctrl->status.idx, ctrl->regmap + HW_STATUS_CNT); + iowrite32(ctrl->status.idx, ctrl->regmap + SW_STATUS_CNT); + + ctrl->cmd.idx = ioread32(ctrl->regmap + HW_CMD_IDX); + if (ctrl->cmd.idx > RSXX_MAX_OUTSTANDING_CMDS) { + dev_crit(&dev->dev, "Failed reading cmd cnt x%x\n", + ctrl->status.idx); + return -EINVAL; + } + iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX); + iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX); + + return 0; +} + static int rsxx_dma_ctrl_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl) { int i; + int st; memset(&ctrl->stats, 0, sizeof(ctrl->stats)); - ctrl->status.buf = pci_alloc_consistent(dev, STATUS_BUFFER_SIZE8, - &ctrl->status.dma_addr); - ctrl->cmd.buf = pci_alloc_consistent(dev, COMMAND_BUFFER_SIZE8, - &ctrl->cmd.dma_addr); - if (ctrl->status.buf == NULL || ctrl->cmd.buf == NULL) - return -ENOMEM; - ctrl->trackers = vmalloc(DMA_TRACKER_LIST_SIZE8); if (!ctrl->trackers) return -ENOMEM; @@ -760,33 +796,9 @@ static int rsxx_dma_ctrl_init(struct pci_dev *dev, INIT_WORK(&ctrl->issue_dma_work, rsxx_issue_dmas); INIT_WORK(&ctrl->dma_done_work, rsxx_dma_done); - memset(ctrl->status.buf, 0xac, STATUS_BUFFER_SIZE8); - iowrite32(lower_32_bits(ctrl->status.dma_addr), - ctrl->regmap + SB_ADD_LO); - iowrite32(upper_32_bits(ctrl->status.dma_addr), - ctrl->regmap + SB_ADD_HI); - - memset(ctrl->cmd.buf, 0x83, COMMAND_BUFFER_SIZE8); - iowrite32(lower_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_LO); - iowrite32(upper_32_bits(ctrl->cmd.dma_addr), ctrl->regmap + CB_ADD_HI); - - ctrl->status.idx = ioread32(ctrl->regmap + HW_STATUS_CNT); - if (ctrl->status.idx > RSXX_MAX_OUTSTANDING_CMDS) { - dev_crit(&dev->dev, "Failed reading status cnt x%x\n", - ctrl->status.idx); - return -EINVAL; - } - iowrite32(ctrl->status.idx, ctrl->regmap + HW_STATUS_CNT); - iowrite32(ctrl->status.idx, ctrl->regmap + SW_STATUS_CNT); - - ctrl->cmd.idx = ioread32(ctrl->regmap + HW_CMD_IDX); - if (ctrl->cmd.idx > RSXX_MAX_OUTSTANDING_CMDS) { - dev_crit(&dev->dev, "Failed reading cmd cnt x%x\n", - ctrl->status.idx); - return -EINVAL; - } - iowrite32(ctrl->cmd.idx, ctrl->regmap + HW_CMD_IDX); - iowrite32(ctrl->cmd.idx, ctrl->regmap + SW_CMD_IDX); + st = rsxx_hw_buffers_init(dev, ctrl); + if (st) + return st; return 0; } @@ -822,7 +834,7 @@ static int rsxx_dma_stripe_setup(struct rsxx_cardinfo *card, return 0; } -static int rsxx_dma_configure(struct rsxx_cardinfo *card) +int rsxx_dma_configure(struct rsxx_cardinfo *card) { u32 intr_coal; @@ -968,6 +980,94 @@ void rsxx_dma_destroy(struct rsxx_cardinfo *card) } } +void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) +{ + int i; + int j; + int cnt; + struct rsxx_dma *dma; + struct list_head issued_dmas[card->n_targets]; + + for (i = 0; i < card->n_targets; i++) { + INIT_LIST_HEAD(&issued_dmas[i]); + cnt = 0; + for (j = 0; j < RSXX_MAX_OUTSTANDING_CMDS; j++) { + dma = get_tracker_dma(card->ctrl[i].trackers, j); + if (dma == NULL) + continue; + + if (dma->cmd == HW_CMD_BLK_WRITE) + card->ctrl[i].stats.writes_issued--; + else if (dma->cmd == HW_CMD_BLK_DISCARD) + card->ctrl[i].stats.discards_issued--; + else + card->ctrl[i].stats.reads_issued--; + + list_add_tail(&dma->list, &issued_dmas[i]); + push_tracker(card->ctrl[i].trackers, j); + cnt++; + } + + spin_lock(&card->ctrl[i].queue_lock); + list_splice(&issued_dmas[i], &card->ctrl[i].queue); + + atomic_sub(cnt, &card->ctrl[i].stats.hw_q_depth); + card->ctrl[i].stats.sw_q_depth += cnt; + card->ctrl[i].e_cnt = 0; + + list_for_each_entry(dma, &card->ctrl[i].queue, list) { + if (dma->dma_addr) + pci_unmap_page(card->dev, dma->dma_addr, + get_dma_size(dma), + dma->cmd == HW_CMD_BLK_WRITE ? + PCI_DMA_TODEVICE : + PCI_DMA_FROMDEVICE); + } + spin_unlock(&card->ctrl[i].queue_lock); + } +} + +void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card) +{ + struct rsxx_dma *dma; + struct rsxx_dma *tmp; + int i; + + for (i = 0; i < card->n_targets; i++) { + spin_lock(&card->ctrl[i].queue_lock); + list_for_each_entry_safe(dma, tmp, &card->ctrl[i].queue, list) { + list_del(&dma->list); + + rsxx_complete_dma(&card->ctrl[i], dma, DMA_CANCELLED); + } + spin_unlock(&card->ctrl[i].queue_lock); + } +} + +int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card) +{ + struct rsxx_dma *dma; + struct rsxx_dma *tmp; + int i; + + for (i = 0; i < card->n_targets; i++) { + spin_lock(&card->ctrl[i].queue_lock); + list_for_each_entry(dma, &card->ctrl[i].queue, list) { + dma->dma_addr = pci_map_page(card->dev, dma->page, + dma->pg_off, get_dma_size(dma), + dma->cmd == HW_CMD_BLK_WRITE ? + PCI_DMA_TODEVICE : + PCI_DMA_FROMDEVICE); + if (!dma->dma_addr) { + kmem_cache_free(rsxx_dma_pool, dma); + return -ENOMEM; + } + } + spin_unlock(&card->ctrl[i].queue_lock); + } + + return 0; +} int rsxx_dma_init(void) { diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h index f5a95f7..8a7ac87 100644 --- a/drivers/block/rsxx/rsxx_priv.h +++ b/drivers/block/rsxx/rsxx_priv.h @@ -64,6 +64,9 @@ struct proc_cmd; #define RSXX_MAX_OUTSTANDING_CMDS 255 #define RSXX_CS_IDX_MASK 0xff +#define STATUS_BUFFER_SIZE8 4096 +#define COMMAND_BUFFER_SIZE8 4096 + #define RSXX_MAX_TARGETS 8 struct dma_tracker_list; @@ -88,6 +91,9 @@ struct rsxx_dma_stats { u32 discards_failed; u32 done_rescheduled; u32 issue_rescheduled; + u32 dma_sw_err; + u32 dma_hw_fault; + u32 dma_cancelled; u32 sw_q_depth; /* Number of DMAs on the SW queue. */ atomic_t hw_q_depth; /* Number of DMAs queued to HW. */ }; @@ -113,6 +119,7 @@ struct rsxx_dma_ctrl { struct rsxx_cardinfo { struct pci_dev *dev; unsigned int halt; + unsigned int eeh_state; void __iomem *regmap; spinlock_t irq_lock; @@ -221,6 +228,7 @@ enum rsxx_pci_regmap { PERF_RD512_HI = 0xac, PERF_WR512_LO = 0xb0, PERF_WR512_HI = 0xb4, + PCI_RECONFIG = 0xb8, }; enum rsxx_intr { @@ -234,6 +242,8 @@ enum rsxx_intr { CR_INTR_DMA5 = 0x00000080, CR_INTR_DMA6 = 0x00000100, CR_INTR_DMA7 = 0x00000200, + CR_INTR_ALL_C = 0x0000003f, + CR_INTR_ALL_G = 0x000003ff, CR_INTR_DMA_ALL = 0x000003f5, CR_INTR_ALL = 0xffffffff, }; @@ -250,8 +260,14 @@ enum rsxx_pci_reset { DMA_QUEUE_RESET = 0x00000001, }; +enum rsxx_hw_fifo_flush { + RSXX_FLUSH_BUSY = 0x00000002, + RSXX_FLUSH_TIMEOUT = 0x00000004, +}; + enum rsxx_pci_revision { RSXX_DISCARD_SUPPORT = 2, + RSXX_EEH_SUPPORT = 3, }; enum rsxx_creg_cmd { @@ -357,11 +373,17 @@ int rsxx_dma_setup(struct rsxx_cardinfo *card); void rsxx_dma_destroy(struct rsxx_cardinfo *card); int rsxx_dma_init(void); void rsxx_dma_cleanup(void); +void rsxx_dma_queue_reset(struct rsxx_cardinfo *card); +int rsxx_dma_configure(struct rsxx_cardinfo *card); int rsxx_dma_queue_bio(struct rsxx_cardinfo *card, struct bio *bio, atomic_t *n_dmas, rsxx_dma_cb cb, void *cb_data); +int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl); +void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card); +void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card); +int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card); /***** cregs.c *****/ int rsxx_creg_write(struct rsxx_cardinfo *card, u32 addr, @@ -386,10 +408,11 @@ int rsxx_creg_setup(struct rsxx_cardinfo *card); void rsxx_creg_destroy(struct rsxx_cardinfo *card); int rsxx_creg_init(void); void rsxx_creg_cleanup(void); - int rsxx_reg_access(struct rsxx_cardinfo *card, struct rsxx_reg_access __user *ucmd, int read); +void rsxx_eeh_save_issued_creg(struct rsxx_cardinfo *card); +void rsxx_kick_creg_queue(struct rsxx_cardinfo *card); -- cgit v1.1 From 351a2c6e7d265f97799ec7f6b1dde7fc7cb4b92d Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Sat, 16 Mar 2013 10:10:48 +0100 Subject: rsxx: fix missing unlock on error return in rsxx_eeh_remap_dmas() Spotted by Fenguan Wu's super build robot. Signed-off-by: Jens Axboe --- drivers/block/rsxx/dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index 60d344d..d523e9c 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -1059,6 +1059,7 @@ int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card) PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); if (!dma->dma_addr) { + spin_unlock(&card->ctrl[i].queue_lock); kmem_cache_free(rsxx_dma_pool, dma); return -ENOMEM; } -- cgit v1.1 From 2bb78efab42cf4ee7a7184f7d2da1b7cb331b479 Mon Sep 17 00:00:00 2001 From: Michael Neuling Date: Mon, 11 Mar 2013 16:42:49 +0000 Subject: powerpc/ptrace: Fix brk.len used uninitialised With some CONFIGS it's possible that in ppc_set_hwdebug, brk.len is uninitialised before being used. It has been reported that GCC 4.2 will produce the following error in this case: arch/powerpc/kernel/ptrace.c:1479: warning: 'brk.len' is used uninitialized in this function arch/powerpc/kernel/ptrace.c:1381: note: 'brk.len' was declared here This patch corrects this. Signed-off-by: Michael Neuling Reported-by: Philippe De Muyter Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/ptrace.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index 245c1b6..f9b30c6 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -1428,6 +1428,7 @@ static long ppc_set_hwdebug(struct task_struct *child, brk.address = bp_info->addr & ~7UL; brk.type = HW_BRK_TYPE_TRANSLATE; + brk.len = 8; if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_READ) brk.type |= HW_BRK_TYPE_READ; if (bp_info->trigger_type & PPC_BREAKPOINT_TRIGGER_WRITE) -- cgit v1.1 From d812c0e1f90b7b86ff8e06b500cd8b8a03f3dbe6 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Wed, 6 Mar 2013 18:11:51 +0000 Subject: powerpc: Make sure that we alays include CONFIG_BINFMT_ELF Our kernel is not much good without BINFMT_ELF and this fixes a build warning on 64 bit allnoconfig builds: warning: (COMPAT) selects COMPAT_BINFMT_ELF which has unmet direct dependencies (COMPAT && BINFMT_ELF) Signed-off-by: Stephen Rothwell Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b89d7eb..a091c01 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -90,6 +90,7 @@ config GENERIC_GPIO config PPC bool default y + select BINFMT_ELF select OF select OF_EARLY_FLATTREE select HAVE_FTRACE_MCOUNT_RECORD -- cgit v1.1 From e39d1a471484662620651cd9520250d33843f235 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 13 Mar 2013 03:34:53 +0000 Subject: powerpc: Make VSID_BITS* dependency explicit VSID_BITS and VSID_BITS_1T depends on the context bits and user esid bits. Make the dependency explicit Acked-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt CC: [v3.8] --- arch/powerpc/include/asm/mmu-hash64.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 2fdb47a..5f8c2bd 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -381,21 +381,22 @@ extern void slb_set_size(u16 size); * hash collisions. */ +#define CONTEXT_BITS 19 +#define USER_ESID_BITS 18 +#define USER_ESID_BITS_1T 6 + /* * This should be computed such that protovosid * vsid_mulitplier * doesn't overflow 64 bits. It should also be co-prime to vsid_modulus */ #define VSID_MULTIPLIER_256M ASM_CONST(12538073) /* 24-bit prime */ -#define VSID_BITS_256M 38 +#define VSID_BITS_256M (CONTEXT_BITS + USER_ESID_BITS + 1) #define VSID_MODULUS_256M ((1UL< Date: Wed, 13 Mar 2013 03:34:54 +0000 Subject: powerpc: Update kernel VSID range This patch change the kernel VSID range so that we limit VSID_BITS to 37. This enables us to support 64TB with 65 bit VA (37+28). Without this patch we have boot hangs on platforms that only support 65 bit VA. With this patch we now have proto vsid generated as below: We first generate a 37-bit "proto-VSID". Proto-VSIDs are generated from mmu context id and effective segment id of the address. For user processes max context id is limited to ((1ul << 19) - 5) for kernel space, we use the top 4 context ids to map address as below 0x7fffc - [ 0xc000000000000000 - 0xc0003fffffffffff ] 0x7fffd - [ 0xd000000000000000 - 0xd0003fffffffffff ] 0x7fffe - [ 0xe000000000000000 - 0xe0003fffffffffff ] 0x7ffff - [ 0xf000000000000000 - 0xf0003fffffffffff ] Acked-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V Tested-by: Geoff Levand Signed-off-by: Benjamin Herrenschmidt CC: [v3.8] --- arch/powerpc/include/asm/mmu-hash64.h | 115 +++++++++++++++++----------------- arch/powerpc/kernel/exceptions-64s.S | 34 +++++++--- arch/powerpc/mm/hash_utils_64.c | 20 ++++-- arch/powerpc/mm/mmu_context_hash64.c | 11 +--- arch/powerpc/mm/slb_low.S | 50 +++++++-------- arch/powerpc/mm/tlb_hash64.c | 2 +- 6 files changed, 126 insertions(+), 106 deletions(-) diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 5f8c2bd..a32461f 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -343,17 +343,16 @@ extern void slb_set_size(u16 size); /* * VSID allocation (256MB segment) * - * We first generate a 38-bit "proto-VSID". For kernel addresses this - * is equal to the ESID | 1 << 37, for user addresses it is: - * (context << USER_ESID_BITS) | (esid & ((1U << USER_ESID_BITS) - 1) + * We first generate a 37-bit "proto-VSID". Proto-VSIDs are generated + * from mmu context id and effective segment id of the address. * - * This splits the proto-VSID into the below range - * 0 - (2^(CONTEXT_BITS + USER_ESID_BITS) - 1) : User proto-VSID range - * 2^(CONTEXT_BITS + USER_ESID_BITS) - 2^(VSID_BITS) : Kernel proto-VSID range - * - * We also have CONTEXT_BITS + USER_ESID_BITS = VSID_BITS - 1 - * That is, we assign half of the space to user processes and half - * to the kernel. + * For user processes max context id is limited to ((1ul << 19) - 5) + * for kernel space, we use the top 4 context ids to map address as below + * NOTE: each context only support 64TB now. + * 0x7fffc - [ 0xc000000000000000 - 0xc0003fffffffffff ] + * 0x7fffd - [ 0xd000000000000000 - 0xd0003fffffffffff ] + * 0x7fffe - [ 0xe000000000000000 - 0xe0003fffffffffff ] + * 0x7ffff - [ 0xf000000000000000 - 0xf0003fffffffffff ] * * The proto-VSIDs are then scrambled into real VSIDs with the * multiplicative hash: @@ -363,22 +362,19 @@ extern void slb_set_size(u16 size); * VSID_MULTIPLIER is prime, so in particular it is * co-prime to VSID_MODULUS, making this a 1:1 scrambling function. * Because the modulus is 2^n-1 we can compute it efficiently without - * a divide or extra multiply (see below). - * - * This scheme has several advantages over older methods: + * a divide or extra multiply (see below). The scramble function gives + * robust scattering in the hash table (at least based on some initial + * results). * - * - We have VSIDs allocated for every kernel address - * (i.e. everything above 0xC000000000000000), except the very top - * segment, which simplifies several things. + * We also consider VSID 0 special. We use VSID 0 for slb entries mapping + * bad address. This enables us to consolidate bad address handling in + * hash_page. * - * - We allow for USER_ESID_BITS significant bits of ESID and - * CONTEXT_BITS bits of context for user addresses. - * i.e. 64T (46 bits) of address space for up to half a million contexts. - * - * - The scramble function gives robust scattering in the hash - * table (at least based on some initial results). The previous - * method was more susceptible to pathological cases giving excessive - * hash collisions. + * We also need to avoid the last segment of the last context, because that + * would give a protovsid of 0x1fffffffff. That will result in a VSID 0 + * because of the modulo operation in vsid scramble. But the vmemmap + * (which is what uses region 0xf) will never be close to 64TB in size + * (it's 56 bytes per page of system memory). */ #define CONTEXT_BITS 19 @@ -386,15 +382,25 @@ extern void slb_set_size(u16 size); #define USER_ESID_BITS_1T 6 /* + * 256MB segment + * The proto-VSID space has 2^(CONTEX_BITS + USER_ESID_BITS) - 1 segments + * available for user + kernel mapping. The top 4 contexts are used for + * kernel mapping. Each segment contains 2^28 bytes. Each + * context maps 2^46 bytes (64TB) so we can support 2^19-1 contexts + * (19 == 37 + 28 - 46). + */ +#define MAX_USER_CONTEXT ((ASM_CONST(1) << CONTEXT_BITS) - 5) + +/* * This should be computed such that protovosid * vsid_mulitplier * doesn't overflow 64 bits. It should also be co-prime to vsid_modulus */ #define VSID_MULTIPLIER_256M ASM_CONST(12538073) /* 24-bit prime */ -#define VSID_BITS_256M (CONTEXT_BITS + USER_ESID_BITS + 1) +#define VSID_BITS_256M (CONTEXT_BITS + USER_ESID_BITS) #define VSID_MODULUS_256M ((1UL<= \ * 2^36-1, then r3+1 has the 2^36 bit set. So, if r3+1 has \ * the bit clear, r3 already has the answer we want, if it \ @@ -514,34 +521,6 @@ typedef struct { }) #endif /* 1 */ -/* - * This is only valid for addresses >= PAGE_OFFSET - * The proto-VSID space is divided into two class - * User: 0 to 2^(CONTEXT_BITS + USER_ESID_BITS) -1 - * kernel: 2^(CONTEXT_BITS + USER_ESID_BITS) to 2^(VSID_BITS) - 1 - * - * With KERNEL_START at 0xc000000000000000, the proto vsid for - * the kernel ends up with 0xc00000000 (36 bits). With 64TB - * support we need to have kernel proto-VSID in the - * [2^37 to 2^38 - 1] range due to the increased USER_ESID_BITS. - */ -static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize) -{ - unsigned long proto_vsid; - /* - * We need to make sure proto_vsid for the kernel is - * >= 2^(CONTEXT_BITS + USER_ESID_BITS[_1T]) - */ - if (ssize == MMU_SEGSIZE_256M) { - proto_vsid = ea >> SID_SHIFT; - proto_vsid |= (1UL << (CONTEXT_BITS + USER_ESID_BITS)); - return vsid_scramble(proto_vsid, 256M); - } - proto_vsid = ea >> SID_SHIFT_1T; - proto_vsid |= (1UL << (CONTEXT_BITS + USER_ESID_BITS_1T)); - return vsid_scramble(proto_vsid, 1T); -} - /* Returns the segment size indicator for a user address */ static inline int user_segment_size(unsigned long addr) { @@ -551,10 +530,15 @@ static inline int user_segment_size(unsigned long addr) return MMU_SEGSIZE_256M; } -/* This is only valid for user addresses (which are below 2^44) */ static inline unsigned long get_vsid(unsigned long context, unsigned long ea, int ssize) { + /* + * Bad address. We return VSID 0 for that + */ + if ((ea & ~REGION_MASK) >= PGTABLE_RANGE) + return 0; + if (ssize == MMU_SEGSIZE_256M) return vsid_scramble((context << USER_ESID_BITS) | (ea >> SID_SHIFT), 256M); @@ -562,6 +546,25 @@ static inline unsigned long get_vsid(unsigned long context, unsigned long ea, | (ea >> SID_SHIFT_1T), 1T); } +/* + * This is only valid for addresses >= PAGE_OFFSET + * + * For kernel space, we use the top 4 context ids to map address as below + * 0x7fffc - [ 0xc000000000000000 - 0xc0003fffffffffff ] + * 0x7fffd - [ 0xd000000000000000 - 0xd0003fffffffffff ] + * 0x7fffe - [ 0xe000000000000000 - 0xe0003fffffffffff ] + * 0x7ffff - [ 0xf000000000000000 - 0xf0003fffffffffff ] + */ +static inline unsigned long get_kernel_vsid(unsigned long ea, int ssize) +{ + unsigned long context; + + /* + * kernel take the top 4 context from the available range + */ + context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1; + return get_vsid(context, ea, ssize); +} #endif /* __ASSEMBLY__ */ #endif /* _ASM_POWERPC_MMU_HASH64_H_ */ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 87ef8f5..b112359 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1452,20 +1452,36 @@ do_ste_alloc: _GLOBAL(do_stab_bolted) stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */ std r11,PACA_EXSLB+EX_SRR0(r13) /* save SRR0 in exc. frame */ + mfspr r11,SPRN_DAR /* ea */ + /* + * check for bad kernel/user address + * (ea & ~REGION_MASK) >= PGTABLE_RANGE + */ + rldicr. r9,r11,4,(63 - 46 - 4) + li r9,0 /* VSID = 0 for bad address */ + bne- 0f + + /* + * Calculate VSID: + * This is the kernel vsid, we take the top for context from + * the range. context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1 + * Here we know that (ea >> 60) == 0xc + */ + lis r9,(MAX_USER_CONTEXT + 1)@ha + addi r9,r9,(MAX_USER_CONTEXT + 1)@l + + srdi r10,r11,SID_SHIFT + rldimi r10,r9,USER_ESID_BITS,0 /* proto vsid */ + ASM_VSID_SCRAMBLE(r10, r9, 256M) + rldic r9,r10,12,16 /* r9 = vsid << 12 */ + +0: /* Hash to the primary group */ ld r10,PACASTABVIRT(r13) - mfspr r11,SPRN_DAR - srdi r11,r11,28 + srdi r11,r11,SID_SHIFT rldimi r10,r11,7,52 /* r10 = first ste of the group */ - /* Calculate VSID */ - /* This is a kernel address, so protovsid = ESID | 1 << 37 */ - li r9,0x1 - rldimi r11,r9,(CONTEXT_BITS + USER_ESID_BITS),0 - ASM_VSID_SCRAMBLE(r11, r9, 256M) - rldic r9,r11,12,16 /* r9 = vsid << 12 */ - /* Search the primary group for a free entry */ 1: ld r11,0(r10) /* Test valid bit of the current ste */ andi. r11,r11,0x80 diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 6ec6c19..f410c3e 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -195,6 +195,11 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend, unsigned long vpn = hpt_vpn(vaddr, vsid, ssize); unsigned long tprot = prot; + /* + * If we hit a bad address return error. + */ + if (!vsid) + return -1; /* Make kernel text executable */ if (overlaps_kernel_text(vaddr, vaddr + step)) tprot &= ~HPTE_R_N; @@ -924,11 +929,6 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) DBG_LOW("hash_page(ea=%016lx, access=%lx, trap=%lx\n", ea, access, trap); - if ((ea & ~REGION_MASK) >= PGTABLE_RANGE) { - DBG_LOW(" out of pgtable range !\n"); - return 1; - } - /* Get region & vsid */ switch (REGION_ID(ea)) { case USER_REGION_ID: @@ -959,6 +959,11 @@ int hash_page(unsigned long ea, unsigned long access, unsigned long trap) } DBG_LOW(" mm=%p, mm->pgdir=%p, vsid=%016lx\n", mm, mm->pgd, vsid); + /* Bad address. */ + if (!vsid) { + DBG_LOW("Bad address!\n"); + return 1; + } /* Get pgdir */ pgdir = mm->pgd; if (pgdir == NULL) @@ -1128,6 +1133,8 @@ void hash_preload(struct mm_struct *mm, unsigned long ea, /* Get VSID */ ssize = user_segment_size(ea); vsid = get_vsid(mm->context.id, ea, ssize); + if (!vsid) + return; /* Hash doesn't like irqs */ local_irq_save(flags); @@ -1235,6 +1242,9 @@ static void kernel_map_linear_page(unsigned long vaddr, unsigned long lmi) hash = hpt_hash(vpn, PAGE_SHIFT, mmu_kernel_ssize); hpteg = ((hash & htab_hash_mask) * HPTES_PER_GROUP); + /* Don't create HPTE entries for bad address */ + if (!vsid) + return; ret = ppc_md.hpte_insert(hpteg, vpn, __pa(vaddr), mode, HPTE_V_BOLTED, mmu_linear_psize, mmu_kernel_ssize); diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_hash64.c index 40bc5b0..d1d1b92 100644 --- a/arch/powerpc/mm/mmu_context_hash64.c +++ b/arch/powerpc/mm/mmu_context_hash64.c @@ -29,15 +29,6 @@ static DEFINE_SPINLOCK(mmu_context_lock); static DEFINE_IDA(mmu_context_ida); -/* - * 256MB segment - * The proto-VSID space has 2^(CONTEX_BITS + USER_ESID_BITS) - 1 segments - * available for user mappings. Each segment contains 2^28 bytes. Each - * context maps 2^46 bytes (64TB) so we can support 2^19-1 contexts - * (19 == 37 + 28 - 46). - */ -#define MAX_CONTEXT ((1UL << CONTEXT_BITS) - 1) - int __init_new_context(void) { int index; @@ -56,7 +47,7 @@ again: else if (err) return err; - if (index > MAX_CONTEXT) { + if (index > MAX_USER_CONTEXT) { spin_lock(&mmu_context_lock); ida_remove(&mmu_context_ida, index); spin_unlock(&mmu_context_lock); diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 1a16ca2..77aafaa 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -31,10 +31,15 @@ * No other registers are examined or changed. */ _GLOBAL(slb_allocate_realmode) - /* r3 = faulting address */ + /* + * check for bad kernel/user address + * (ea & ~REGION_MASK) >= PGTABLE_RANGE + */ + rldicr. r9,r3,4,(63 - 46 - 4) + bne- 8f srdi r9,r3,60 /* get region */ - srdi r10,r3,28 /* get esid */ + srdi r10,r3,SID_SHIFT /* get esid */ cmpldi cr7,r9,0xc /* cmp PAGE_OFFSET for later use */ /* r3 = address, r10 = esid, cr7 = <> PAGE_OFFSET */ @@ -56,12 +61,14 @@ _GLOBAL(slb_allocate_realmode) */ _GLOBAL(slb_miss_kernel_load_linear) li r11,0 - li r9,0x1 /* - * for 1T we shift 12 bits more. slb_finish_load_1T will do - * the necessary adjustment + * context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1 + * r9 = region id. */ - rldimi r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0 + addis r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@ha + addi r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@l + + BEGIN_FTR_SECTION b slb_finish_load END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT) @@ -91,24 +98,19 @@ _GLOBAL(slb_miss_kernel_load_vmemmap) _GLOBAL(slb_miss_kernel_load_io) li r11,0 6: - li r9,0x1 /* - * for 1T we shift 12 bits more. slb_finish_load_1T will do - * the necessary adjustment + * context = (MAX_USER_CONTEXT) + ((ea >> 60) - 0xc) + 1 + * r9 = region id. */ - rldimi r10,r9,(CONTEXT_BITS + USER_ESID_BITS),0 + addis r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@ha + addi r9,r9,(MAX_USER_CONTEXT - 0xc + 1)@l + BEGIN_FTR_SECTION b slb_finish_load END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT) b slb_finish_load_1T -0: /* user address: proto-VSID = context << 15 | ESID. First check - * if the address is within the boundaries of the user region - */ - srdi. r9,r10,USER_ESID_BITS - bne- 8f /* invalid ea bits set */ - - +0: /* when using slices, we extract the psize off the slice bitmaps * and then we need to get the sllp encoding off the mmu_psize_defs * array. @@ -164,15 +166,13 @@ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_1T_SEGMENT) ld r9,PACACONTEXTID(r13) BEGIN_FTR_SECTION cmpldi r10,0x1000 -END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT) - rldimi r10,r9,USER_ESID_BITS,0 -BEGIN_FTR_SECTION bge slb_finish_load_1T END_MMU_FTR_SECTION_IFSET(MMU_FTR_1T_SEGMENT) b slb_finish_load 8: /* invalid EA */ li r10,0 /* BAD_VSID */ + li r9,0 /* BAD_VSID */ li r11,SLB_VSID_USER /* flags don't much matter */ b slb_finish_load @@ -221,8 +221,6 @@ _GLOBAL(slb_allocate_user) /* get context to calculate proto-VSID */ ld r9,PACACONTEXTID(r13) - rldimi r10,r9,USER_ESID_BITS,0 - /* fall through slb_finish_load */ #endif /* __DISABLED__ */ @@ -231,9 +229,10 @@ _GLOBAL(slb_allocate_user) /* * Finish loading of an SLB entry and return * - * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET + * r3 = EA, r9 = context, r10 = ESID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET */ slb_finish_load: + rldimi r10,r9,USER_ESID_BITS,0 ASM_VSID_SCRAMBLE(r10,r9,256M) /* * bits above VSID_BITS_256M need to be ignored from r10 @@ -298,10 +297,11 @@ _GLOBAL(slb_compare_rr_to_size) /* * Finish loading of a 1T SLB entry (for the kernel linear mapping) and return. * - * r3 = EA, r10 = proto-VSID, r11 = flags, clobbers r9 + * r3 = EA, r9 = context, r10 = ESID(256MB), r11 = flags, clobbers r9 */ slb_finish_load_1T: - srdi r10,r10,40-28 /* get 1T ESID */ + srdi r10,r10,(SID_SHIFT_1T - SID_SHIFT) /* get 1T ESID */ + rldimi r10,r9,USER_ESID_BITS_1T,0 ASM_VSID_SCRAMBLE(r10,r9,1T) /* * bits above VSID_BITS_1T need to be ignored from r10 diff --git a/arch/powerpc/mm/tlb_hash64.c b/arch/powerpc/mm/tlb_hash64.c index 0d82ef5..023ec8a 100644 --- a/arch/powerpc/mm/tlb_hash64.c +++ b/arch/powerpc/mm/tlb_hash64.c @@ -82,11 +82,11 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr, if (!is_kernel_addr(addr)) { ssize = user_segment_size(addr); vsid = get_vsid(mm->context.id, addr, ssize); - WARN_ON(vsid == 0); } else { vsid = get_kernel_vsid(addr, mmu_kernel_ssize); ssize = mmu_kernel_ssize; } + WARN_ON(vsid == 0); vpn = hpt_vpn(addr, vsid, ssize); rpte = __real_pte(__pte(pte), ptep); -- cgit v1.1 From af81d7878c641629f2693ae3fdaf74b4af14dfca Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 13 Mar 2013 03:34:55 +0000 Subject: powerpc: Rename USER_ESID_BITS* to ESID_BITS* Now we use ESID_BITS of kernel address to build proto vsid. So rename USER_ESIT_BITS to ESID_BITS Acked-by: Paul Mackerras Signed-off-by: Aneesh Kumar K.V Signed-off-by: Benjamin Herrenschmidt CC: [v3.8] --- arch/powerpc/include/asm/mmu-hash64.h | 16 ++++++++-------- arch/powerpc/kernel/exceptions-64s.S | 2 +- arch/powerpc/kvm/book3s_64_mmu_host.c | 4 ++-- arch/powerpc/mm/pgtable_64.c | 2 +- arch/powerpc/mm/slb_low.S | 4 ++-- 5 files changed, 14 insertions(+), 14 deletions(-) diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index a32461f..b59e06f 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -378,12 +378,12 @@ extern void slb_set_size(u16 size); */ #define CONTEXT_BITS 19 -#define USER_ESID_BITS 18 -#define USER_ESID_BITS_1T 6 +#define ESID_BITS 18 +#define ESID_BITS_1T 6 /* * 256MB segment - * The proto-VSID space has 2^(CONTEX_BITS + USER_ESID_BITS) - 1 segments + * The proto-VSID space has 2^(CONTEX_BITS + ESID_BITS) - 1 segments * available for user + kernel mapping. The top 4 contexts are used for * kernel mapping. Each segment contains 2^28 bytes. Each * context maps 2^46 bytes (64TB) so we can support 2^19-1 contexts @@ -396,15 +396,15 @@ extern void slb_set_size(u16 size); * doesn't overflow 64 bits. It should also be co-prime to vsid_modulus */ #define VSID_MULTIPLIER_256M ASM_CONST(12538073) /* 24-bit prime */ -#define VSID_BITS_256M (CONTEXT_BITS + USER_ESID_BITS) +#define VSID_BITS_256M (CONTEXT_BITS + ESID_BITS) #define VSID_MODULUS_256M ((1UL<> SID_SHIFT), 256M); - return vsid_scramble((context << USER_ESID_BITS_1T) + return vsid_scramble((context << ESID_BITS_1T) | (ea >> SID_SHIFT_1T), 1T); } diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index b112359..200afa5 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1472,7 +1472,7 @@ _GLOBAL(do_stab_bolted) addi r9,r9,(MAX_USER_CONTEXT + 1)@l srdi r10,r11,SID_SHIFT - rldimi r10,r9,USER_ESID_BITS,0 /* proto vsid */ + rldimi r10,r9,ESID_BITS,0 /* proto vsid */ ASM_VSID_SCRAMBLE(r10, r9, 256M) rldic r9,r10,12,16 /* r9 = vsid << 12 */ diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index ead58e3..5d7d29a 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -326,8 +326,8 @@ int kvmppc_mmu_init(struct kvm_vcpu *vcpu) vcpu3s->context_id[0] = err; vcpu3s->proto_vsid_max = ((vcpu3s->context_id[0] + 1) - << USER_ESID_BITS) - 1; - vcpu3s->proto_vsid_first = vcpu3s->context_id[0] << USER_ESID_BITS; + << ESID_BITS) - 1; + vcpu3s->proto_vsid_first = vcpu3s->context_id[0] << ESID_BITS; vcpu3s->proto_vsid_next = vcpu3s->proto_vsid_first; kvmppc_mmu_hpte_init(vcpu); diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index e212a27..654258f 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -61,7 +61,7 @@ #endif #ifdef CONFIG_PPC_STD_MMU_64 -#if TASK_SIZE_USER64 > (1UL << (USER_ESID_BITS + SID_SHIFT)) +#if TASK_SIZE_USER64 > (1UL << (ESID_BITS + SID_SHIFT)) #error TASK_SIZE_USER64 exceeds user VSID range #endif #endif diff --git a/arch/powerpc/mm/slb_low.S b/arch/powerpc/mm/slb_low.S index 77aafaa..17aa6df 100644 --- a/arch/powerpc/mm/slb_low.S +++ b/arch/powerpc/mm/slb_low.S @@ -232,7 +232,7 @@ _GLOBAL(slb_allocate_user) * r3 = EA, r9 = context, r10 = ESID, r11 = flags, clobbers r9, cr7 = <> PAGE_OFFSET */ slb_finish_load: - rldimi r10,r9,USER_ESID_BITS,0 + rldimi r10,r9,ESID_BITS,0 ASM_VSID_SCRAMBLE(r10,r9,256M) /* * bits above VSID_BITS_256M need to be ignored from r10 @@ -301,7 +301,7 @@ _GLOBAL(slb_compare_rr_to_size) */ slb_finish_load_1T: srdi r10,r10,(SID_SHIFT_1T - SID_SHIFT) /* get 1T ESID */ - rldimi r10,r9,USER_ESID_BITS_1T,0 + rldimi r10,r9,ESID_BITS_1T,0 ASM_VSID_SCRAMBLE(r10,r9,1T) /* * bits above VSID_BITS_1T need to be ignored from r10 -- cgit v1.1 From 8c6216d7f118a128678270824b6a1286a63863ca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Timo=20Ter=C3=A4s?= Date: Wed, 13 Mar 2013 02:37:49 +0000 Subject: Revert "ip_gre: make ipgre_tunnel_xmit() not parse network header as IP unconditionally" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 412ed94744d16806fbec3bd250fd94e71cde5a1f. The commit is wrong as tiph points to the outer IPv4 header which is installed at ipgre_header() and not the inner one which is protocol dependant. This commit broke succesfully opennhrp which use PF_PACKET socket with ETH_P_NHRP protocol. Additionally ssl_addr is set to the link-layer IPv4 address. This address is written by ipgre_header() to the skb earlier, and this is the IPv4 header tiph should point to - regardless of the inner protocol payload. Signed-off-by: Timo Teräs Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index d0ef0e6..91d66db 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -798,10 +798,7 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev if (dev->header_ops && dev->type == ARPHRD_IPGRE) { gre_hlen = 0; - if (skb->protocol == htons(ETH_P_IP)) - tiph = (const struct iphdr *)skb->data; - else - tiph = &tunnel->parms.iph; + tiph = (const struct iphdr *)skb->data; } else { gre_hlen = tunnel->hlen; tiph = &tunnel->parms.iph; -- cgit v1.1 From 9ad477a1453be32da4a6f068cc08f9353e224be2 Mon Sep 17 00:00:00 2001 From: Masanari Iida Date: Sun, 17 Mar 2013 02:57:28 +0900 Subject: ALSA: documentation: Fix typo in Documentation/sound Correct spelling typos in Documentation/sound/alsa Signed-off-by: Masanari Iida Signed-off-by: Takashi Iwai --- Documentation/sound/alsa/ALSA-Configuration.txt | 2 +- Documentation/sound/alsa/seq_oss.html | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/sound/alsa/ALSA-Configuration.txt b/Documentation/sound/alsa/ALSA-Configuration.txt index ce6581c..4499bd9 100644 --- a/Documentation/sound/alsa/ALSA-Configuration.txt +++ b/Documentation/sound/alsa/ALSA-Configuration.txt @@ -912,7 +912,7 @@ Prior to version 0.9.0rc4 options had a 'snd_' prefix. This was removed. models depending on the codec chip. The list of available models is found in HD-Audio-Models.txt - The model name "genric" is treated as a special case. When this + The model name "generic" is treated as a special case. When this model is given, the driver uses the generic codec parser without "codec-patch". It's sometimes good for testing and debugging. diff --git a/Documentation/sound/alsa/seq_oss.html b/Documentation/sound/alsa/seq_oss.html index d9776cf..9663b45 100644 --- a/Documentation/sound/alsa/seq_oss.html +++ b/Documentation/sound/alsa/seq_oss.html @@ -285,7 +285,7 @@ sample data.

7.2.4 Close Callback

The close callback is called when this device is closed by the -applicaion. If any private data was allocated in open callback, it must +application. If any private data was allocated in open callback, it must be released in the close callback. The deletion of ALSA port should be done here, too. This callback must not be NULL.

-- cgit v1.1 From a5b8db91442fce9c9713fcd656c3698f1adde1d6 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Wed, 13 Mar 2013 04:18:58 +0000 Subject: rtnetlink: Mask the rta_type when range checking Range/validity checks on rta_type in rtnetlink_rcv_msg() do not account for flags that may be set. This causes the function to return -EINVAL when flags are set on the type (for example NLA_F_NESTED). Signed-off-by: Vlad Yasevich Acked-by: Thomas Graf Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index a585d45..5fb8d7e 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -2621,7 +2621,7 @@ static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); while (RTA_OK(attr, attrlen)) { - unsigned int flavor = attr->rta_type; + unsigned int flavor = attr->rta_type & NLA_TYPE_MASK; if (flavor) { if (flavor > rta_max[sz_idx]) return -EINVAL; -- cgit v1.1 From 1e8bbe6cd02fc300c88bd48244ce61ad9c7d1776 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Thu, 14 Mar 2013 01:05:13 +0000 Subject: net: cdc_ncm, cdc_mbim: allow user to prefer NCM for backwards compatibility MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit bd329e1 ("net: cdc_ncm: do not bind to NCM compatible MBIM devices") introduced a new policy, preferring MBIM for dual NCM/MBIM functions if the cdc_mbim driver was enabled. This caused a regression for users wanting to use NCM. Devices implementing NCM backwards compatibility according to section 3.2 of the MBIM v1.0 specification allow either NCM or MBIM on a single USB function, using different altsettings. The cdc_ncm and cdc_mbim drivers will both probe such functions, and must agree on a common policy for selecting either MBIM or NCM. Until now, this policy has been set at build time based on CONFIG_USB_NET_CDC_MBIM. Use a module parameter to set the system policy at runtime, allowing the user to prefer NCM on systems with the cdc_mbim driver. Cc: Greg Suarez Cc: Alexey Orishko Reported-by: Geir Haatveit Reported-by: Tommi Kyntola Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=54791 Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_mbim.c | 11 +--------- drivers/net/usb/cdc_ncm.c | 49 +++++++++++++++++++++++++++++---------------- include/linux/usb/cdc_ncm.h | 1 + 3 files changed, 34 insertions(+), 27 deletions(-) diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c index 248d2dc..16c8429 100644 --- a/drivers/net/usb/cdc_mbim.c +++ b/drivers/net/usb/cdc_mbim.c @@ -68,18 +68,9 @@ static int cdc_mbim_bind(struct usbnet *dev, struct usb_interface *intf) struct cdc_ncm_ctx *ctx; struct usb_driver *subdriver = ERR_PTR(-ENODEV); int ret = -ENODEV; - u8 data_altsetting = CDC_NCM_DATA_ALTSETTING_NCM; + u8 data_altsetting = cdc_ncm_select_altsetting(dev, intf); struct cdc_mbim_state *info = (void *)&dev->data; - /* see if interface supports MBIM alternate setting */ - if (intf->num_altsetting == 2) { - if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) - usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_MBIM); - data_altsetting = CDC_NCM_DATA_ALTSETTING_MBIM; - } - /* Probably NCM, defer for cdc_ncm_bind */ if (!cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) goto err; diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 61b74a2..4709fa3 100644 --- a/drivers/net/usb/cdc_ncm.c +++ b/drivers/net/usb/cdc_ncm.c @@ -55,6 +55,14 @@ #define DRIVER_VERSION "14-Mar-2012" +#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM) +static bool prefer_mbim = true; +#else +static bool prefer_mbim; +#endif +module_param(prefer_mbim, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(prefer_mbim, "Prefer MBIM setting on dual NCM/MBIM functions"); + static void cdc_ncm_txpath_bh(unsigned long param); static void cdc_ncm_tx_timeout_start(struct cdc_ncm_ctx *ctx); static enum hrtimer_restart cdc_ncm_tx_timer_cb(struct hrtimer *hr_timer); @@ -550,9 +558,12 @@ void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf) } EXPORT_SYMBOL_GPL(cdc_ncm_unbind); -static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) +/* Select the MBIM altsetting iff it is preferred and available, + * returning the number of the corresponding data interface altsetting + */ +u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf) { - int ret; + struct usb_host_interface *alt; /* The MBIM spec defines a NCM compatible default altsetting, * which we may have matched: @@ -568,23 +579,27 @@ static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) * endpoint descriptors, shall be constructed according to * the rules given in section 6 (USB Device Model) of this * specification." - * - * Do not bind to such interfaces, allowing cdc_mbim to handle - * them */ -#if IS_ENABLED(CONFIG_USB_NET_CDC_MBIM) - if ((intf->num_altsetting == 2) && - !usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_MBIM)) { - if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) - return -ENODEV; - else - usb_set_interface(dev->udev, - intf->cur_altsetting->desc.bInterfaceNumber, - CDC_NCM_COMM_ALTSETTING_NCM); + if (prefer_mbim && intf->num_altsetting == 2) { + alt = usb_altnum_to_altsetting(intf, CDC_NCM_COMM_ALTSETTING_MBIM); + if (alt && cdc_ncm_comm_intf_is_mbim(alt) && + !usb_set_interface(dev->udev, + intf->cur_altsetting->desc.bInterfaceNumber, + CDC_NCM_COMM_ALTSETTING_MBIM)) + return CDC_NCM_DATA_ALTSETTING_MBIM; } -#endif + return CDC_NCM_DATA_ALTSETTING_NCM; +} +EXPORT_SYMBOL_GPL(cdc_ncm_select_altsetting); + +static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf) +{ + int ret; + + /* MBIM backwards compatible function? */ + cdc_ncm_select_altsetting(dev, intf); + if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting)) + return -ENODEV; /* NCM data altsetting is always 1 */ ret = cdc_ncm_bind_common(dev, intf, 1); diff --git a/include/linux/usb/cdc_ncm.h b/include/linux/usb/cdc_ncm.h index 3b8f9d4..cc25b70 100644 --- a/include/linux/usb/cdc_ncm.h +++ b/include/linux/usb/cdc_ncm.h @@ -127,6 +127,7 @@ struct cdc_ncm_ctx { u16 connected; }; +extern u8 cdc_ncm_select_altsetting(struct usbnet *dev, struct usb_interface *intf); extern int cdc_ncm_bind_common(struct usbnet *dev, struct usb_interface *intf, u8 data_altsetting); extern void cdc_ncm_unbind(struct usbnet *dev, struct usb_interface *intf); extern struct sk_buff *cdc_ncm_fill_tx_frame(struct cdc_ncm_ctx *ctx, struct sk_buff *skb, __le32 sign); -- cgit v1.1 From 8008f6e173c239ea9b2423a937aaf85c3157a306 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Mar 2013 11:56:41 +0000 Subject: isdn: hisax: netjet requires VIRT_TO_BUS Disabling CONFIG_VIRT_TO_BUS on ARM showed that the hisax netjet driver depends on this deprecated functionality but is not marked so in Kconfig. Rather than adding ARM to the already long list of architectures that this driver is broken on, this patch adds 'depends on VIRT_TO_BUS' and removes the dependency on !SPARC, which is also implied by that. Signed-off-by: Arnd Bergmann Cc: Karsten Keil Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- drivers/isdn/hisax/Kconfig | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/isdn/hisax/Kconfig b/drivers/isdn/hisax/Kconfig index 5313c9e..d9edcc9 100644 --- a/drivers/isdn/hisax/Kconfig +++ b/drivers/isdn/hisax/Kconfig @@ -237,7 +237,8 @@ config HISAX_MIC config HISAX_NETJET bool "NETjet card" - depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN))) + depends on PCI && (BROKEN || !(PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN))) + depends on VIRT_TO_BUS help This enables HiSax support for the NetJet from Traverse Technologies. @@ -248,7 +249,8 @@ config HISAX_NETJET config HISAX_NETJET_U bool "NETspider U card" - depends on PCI && (BROKEN || !(SPARC || PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN))) + depends on PCI && (BROKEN || !(PPC || PARISC || M68K || (MIPS && !CPU_LITTLE_ENDIAN) || FRV || (XTENSA && !CPU_LITTLE_ENDIAN))) + depends on VIRT_TO_BUS help This enables HiSax support for the Netspider U interface ISDN card from Traverse Technologies. -- cgit v1.1 From db0b82760ef84562b5c0fa880c22b4f352545554 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Mar 2013 11:56:42 +0000 Subject: ethernet/tulip: DE4x5 needs VIRT_TO_BUS The automated ARM build tests have shown that the tulip de4x5 driver uses the old-style virt_to_bus() interface on some architectures. Alpha, Sparc and PowerPC did not hit this problem, because they use a different code path, and most other architectures actually do provide VIRT_TO_BUS. Signed-off-by: Arnd Bergmann Cc: Grant Grundler Cc: netdev@vger.kernel.org Signed-off-by: David S. Miller --- drivers/net/ethernet/dec/tulip/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/dec/tulip/Kconfig b/drivers/net/ethernet/dec/tulip/Kconfig index 0c37fb2..1df33c7 100644 --- a/drivers/net/ethernet/dec/tulip/Kconfig +++ b/drivers/net/ethernet/dec/tulip/Kconfig @@ -108,6 +108,7 @@ config TULIP_DM910X config DE4X5 tristate "Generic DECchip & DIGITAL EtherWORKS PCI/EISA" depends on (PCI || EISA) + depends on VIRT_TO_BUS || ALPHA || PPC || SPARC select CRC32 ---help--- This is support for the DIGITAL series of PCI/EISA Ethernet cards. -- cgit v1.1 From 75b9b61bb8a18e75afe7b10dd55681e748fa27df Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Fri, 15 Mar 2013 04:10:16 +0000 Subject: drivers: net: ethernet: ti: davinci_emac: fix usage of cpdma_check_free_tx_desc() Fix which was done in the following commit in cpsw driver has to be taken forward to davinci emac driver as well. commit d35162f89b8f00537d7b240b76d2d0e8b8d29aa0 Author: Daniel Mack Date: Tue Mar 12 06:31:19 2013 +0000 net: ethernet: cpsw: fix usage of cpdma_check_free_tx_desc() Commit fae50823d0 ("net: ethernet: davinci_cpdma: Add boundary for rx and tx descriptors") introduced a function to check the current allocation state of tx packets. The return value is taken into account to stop the netqork queue on the adapter in case there are no free slots. However, cpdma_check_free_tx_desc() returns 'true' if there is room in the bitmap, not 'false', so the usage of the function is wrong. Reported-by: Prabhakar Lad Tested-by: Prabhakar Lad Signed-off-by: Mugunthan V N Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_emac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 52c0536..ae1b77a 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1102,7 +1102,7 @@ static int emac_dev_xmit(struct sk_buff *skb, struct net_device *ndev) /* If there is no more tx desc left free then we need to * tell the kernel to stop sending us tx frames. */ - if (unlikely(cpdma_check_free_tx_desc(priv->txchan))) + if (unlikely(!cpdma_check_free_tx_desc(priv->txchan))) netif_stop_queue(ndev); return NETDEV_TX_OK; -- cgit v1.1 From 722c6f585088a2c392b4c5d01b87a584bb8fb73f Mon Sep 17 00:00:00 2001 From: Michal Schmidt Date: Fri, 15 Mar 2013 05:27:54 +0000 Subject: bnx2x: add missing napi deletion in error path If the hardware initialization fails in bnx2x_nic_load() after adding napi objects, they would not be deleted. A subsequent attempt to unload the bnx2x module detects a corruption in the napi list. Add the missing napi deletion to the error path. Signed-off-by: Michal Schmidt Acked-by: Dmitry Kravkov Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c index a923bc4..4046f97 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c @@ -2760,6 +2760,7 @@ load_error2: bp->port.pmf = 0; load_error1: bnx2x_napi_disable(bp); + bnx2x_del_all_napi(bp); /* clear pf_load status, as it was already set */ if (IS_PF(bp)) -- cgit v1.1 From 3d84fa98aca7f05f7010022bc45acb1b50326332 Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Fri, 15 Mar 2013 06:39:12 +0000 Subject: bridge: Add support for setting BR_ROOT_BLOCK flag. Most of the support was already there. The only thing that was missing was the call to set the flag. Add this call. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index db12a0f..299fc5f 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -330,6 +330,7 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); + br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); if (tb[IFLA_BRPORT_COST]) { err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); -- cgit v1.1 From 46aa92d1ba162b4b3d6b7102440e459d4e4ee255 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Sun, 17 Mar 2013 02:46:09 +0000 Subject: vhost/net: fix heads usage of ubuf_info ubuf info allocator uses guest controlled head as an index, so a malicious guest could put the same head entry in the ring twice, and we will get two callbacks on the same value. To fix use upend_idx which is guaranteed to be unique. Reported-by: Rusty Russell Signed-off-by: Michael S. Tsirkin Cc: stable@kernel.org Signed-off-by: David S. Miller --- drivers/vhost/net.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 959b1cd..ec6fb3f 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -339,7 +339,8 @@ static void handle_tx(struct vhost_net *net) msg.msg_controllen = 0; ubufs = NULL; } else { - struct ubuf_info *ubuf = &vq->ubuf_info[head]; + struct ubuf_info *ubuf; + ubuf = vq->ubuf_info + vq->upend_idx; vq->heads[vq->upend_idx].len = VHOST_DMA_IN_PROGRESS; -- cgit v1.1 From 3b4f819d5eac94ba8fe5e8c061f6dabfe8d7b22c Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 11 Mar 2013 18:40:16 +0100 Subject: Revert "drm/i915: try to train DP even harder" This reverts commit 0d71068835e2610576d369d6d4cbf90e0f802a71. Not only that the commit introduces a bogus check (voltage_tries == 5 will never meet at the inserted code path), it brings the i915 driver into an endless dp-train loop on HP Z1 desktop machine with IVY+eDP. At least reverting this commit recovers the framebuffer (but X is still broken by other reasons...) Cc: Signed-off-by: Takashi Iwai Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 6f728e5..d46dde5 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1930,7 +1930,7 @@ intel_dp_start_link_train(struct intel_dp *intel_dp) for (i = 0; i < intel_dp->lane_count; i++) if ((intel_dp->train_set[i] & DP_TRAIN_MAX_SWING_REACHED) == 0) break; - if (i == intel_dp->lane_count && voltage_tries == 5) { + if (i == intel_dp->lane_count) { ++loop_tries; if (loop_tries == 5) { DRM_DEBUG_KMS("too many full retries, give up\n"); -- cgit v1.1 From 2a6e06b2aed6995af401dcd4feb5e79a0c7ea554 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 17 Mar 2013 15:44:43 -0700 Subject: perf,x86: fix wrmsr_on_cpu() warning on suspend/resume Commit 1d9d8639c063 ("perf,x86: fix kernel crash with PEBS/BTS after suspend/resume") fixed a crash when doing PEBS performance profiling after resuming, but in using init_debug_store_on_cpu() to restore the DS_AREA mtrr it also resulted in a new WARN_ON() triggering. init_debug_store_on_cpu() uses "wrmsr_on_cpu()", which in turn uses CPU cross-calls to do the MSR update. Which is not really valid at the early resume stage, and the warning is quite reasonable. Now, it all happens to _work_, for the simple reason that smp_call_function_single() ends up just doing the call directly on the CPU when the CPU number matches, but we really should just do the wrmsr() directly instead. This duplicates the wrmsr() logic, but hopefully we can just remove the wrmsr_on_cpu() version eventually. Reported-and-tested-by: Parag Warudkar Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- arch/x86/kernel/cpu/perf_event_intel_ds.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/perf_event_intel_ds.c b/arch/x86/kernel/cpu/perf_event_intel_ds.c index 0e9bdd3..b05a575 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_ds.c +++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c @@ -732,8 +732,10 @@ void intel_ds_init(void) void perf_restore_debug_store(void) { + struct debug_store *ds = __this_cpu_read(cpu_hw_events.ds); + if (!x86_pmu.bts && !x86_pmu.pebs) return; - init_debug_store_on_cpu(smp_processor_id()); + wrmsrl(MSR_IA32_DS_AREA, (unsigned long)ds); } -- cgit v1.1 From 6c4d3bc99b3341067775efd4d9d13cc8e655fd7c Mon Sep 17 00:00:00 2001 From: David Rientjes Date: Sun, 17 Mar 2013 15:49:10 -0700 Subject: perf,x86: fix link failure for non-Intel configs Commit 1d9d8639c063 ("perf,x86: fix kernel crash with PEBS/BTS after suspend/resume") introduces a link failure since perf_restore_debug_store() is only defined for CONFIG_CPU_SUP_INTEL: arch/x86/power/built-in.o: In function `restore_processor_state': (.text+0x45c): undefined reference to `perf_restore_debug_store' Fix it by defining the dummy function appropriately. Signed-off-by: David Rientjes Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- include/linux/perf_event.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 71caed8..1d795df 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -758,7 +758,6 @@ extern void perf_event_enable(struct perf_event *event); extern void perf_event_disable(struct perf_event *event); extern int __perf_event_disable(void *info); extern void perf_event_task_tick(void); -extern void perf_restore_debug_store(void); #else static inline void perf_event_task_sched_in(struct task_struct *prev, @@ -798,6 +797,11 @@ static inline void perf_event_enable(struct perf_event *event) { } static inline void perf_event_disable(struct perf_event *event) { } static inline int __perf_event_disable(void *info) { return -1; } static inline void perf_event_task_tick(void) { } +#endif + +#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) +extern void perf_restore_debug_store(void); +#else static inline void perf_restore_debug_store(void) { } #endif -- cgit v1.1 From a937536b868b8369b98967929045f1df54234323 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 17 Mar 2013 15:59:32 -0700 Subject: Linux 3.9-rc3 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index a05ea42..22113a7 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 9 SUBLEVEL = 0 -EXTRAVERSION = -rc2 +EXTRAVERSION = -rc3 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v1.1 From 92f28d973cce45ef5823209aab3138eb45d8b349 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 15 Mar 2013 01:03:33 -0700 Subject: scm: Require CAP_SYS_ADMIN over the current pidns to spoof pids. Don't allow spoofing pids over unix domain sockets in the corner cases where a user has created a user namespace but has not yet created a pid namespace. Cc: stable@vger.kernel.org Reported-by: Andy Lutomirski Signed-off-by: "Eric W. Biederman" --- net/core/scm.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/net/core/scm.c b/net/core/scm.c index 905dcc6..2dc6cda 100644 --- a/net/core/scm.c +++ b/net/core/scm.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -52,7 +53,8 @@ static __inline__ int scm_check_creds(struct ucred *creds) if (!uid_valid(uid) || !gid_valid(gid)) return -EINVAL; - if ((creds->pid == task_tgid_vnr(current) || nsown_capable(CAP_SYS_ADMIN)) && + if ((creds->pid == task_tgid_vnr(current) || + ns_capable(current->nsproxy->pid_ns->user_ns, CAP_SYS_ADMIN)) && ((uid_eq(uid, cred->uid) || uid_eq(uid, cred->euid) || uid_eq(uid, cred->suid)) || nsown_capable(CAP_SETUID)) && ((gid_eq(gid, cred->gid) || gid_eq(gid, cred->egid) || -- cgit v1.1 From 7ae9712c60698ae2870fd115cb3ef4449a615509 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 5 Mar 2013 10:26:30 +0100 Subject: drm/nv40/therm: improve selection between the old and the new style The condition to select between the old and new style was a thinko as rnndb orders chipsets based on their release date (or general chronologie hw-wise) and not based on their chipset number. As the nv40 family is a mess when it comes to numbers, this patch introduces a switch-based selection between the old and new style. Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c | 50 ++++++++++++++++++------ 1 file changed, 38 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c index 0f5363e..d8f4325 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c @@ -29,42 +29,68 @@ struct nv40_therm_priv { struct nouveau_therm_priv base; }; +enum nv40_sensor_style { INVALID_STYLE = -1, OLD_STYLE = 0, NEW_STYLE = 1 }; + +static enum nv40_sensor_style +nv40_sensor_style(struct nouveau_therm *therm) +{ + struct nouveau_device *device = nv_device(therm); + + switch (device->chipset) { + case 0x43: + case 0x44: + case 0x4a: + case 0x47: + return OLD_STYLE; + + case 0x46: + case 0x49: + case 0x4b: + case 0x4e: + case 0x4c: + case 0x67: + case 0x68: + case 0x63: + return NEW_STYLE; + default: + return INVALID_STYLE; + } +} + static int nv40_sensor_setup(struct nouveau_therm *therm) { - struct nouveau_device *device = nv_device(therm); + enum nv40_sensor_style style = nv40_sensor_style(therm); /* enable ADC readout and disable the ALARM threshold */ - if (device->chipset >= 0x46) { + if (style == NEW_STYLE) { nv_mask(therm, 0x15b8, 0x80000000, 0); nv_wr32(therm, 0x15b0, 0x80003fff); mdelay(10); /* wait for the temperature to stabilize */ return nv_rd32(therm, 0x15b4) & 0x3fff; - } else { + } else if (style == OLD_STYLE) { nv_wr32(therm, 0x15b0, 0xff); return nv_rd32(therm, 0x15b4) & 0xff; - } + } else + return -ENODEV; } static int nv40_temp_get(struct nouveau_therm *therm) { struct nouveau_therm_priv *priv = (void *)therm; - struct nouveau_device *device = nv_device(therm); struct nvbios_therm_sensor *sensor = &priv->bios_sensor; + enum nv40_sensor_style style = nv40_sensor_style(therm); int core_temp; - if (device->chipset >= 0x46) { + if (style == NEW_STYLE) { nv_wr32(therm, 0x15b0, 0x80003fff); core_temp = nv_rd32(therm, 0x15b4) & 0x3fff; - } else { + } else if (style == OLD_STYLE) { nv_wr32(therm, 0x15b0, 0xff); core_temp = nv_rd32(therm, 0x15b4) & 0xff; - } - - /* Setup the sensor if the temperature is 0 */ - if (core_temp == 0) - core_temp = nv40_sensor_setup(therm); + } else + return -ENODEV; if (sensor->slope_div == 0) sensor->slope_div = 1; -- cgit v1.1 From eea4eb14a0f74f806e7a458f174f880744a68bdd Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 5 Mar 2013 10:35:20 +0100 Subject: drm/nv40/therm: increase the sensor's settling delay to 20ms Based on my experience, 10ms wasn't always enough. Let's bump that to a little more. If this turns out to be insufficient-enough again, then an approach based on letting the sensor settle for several seconds before starting polling on the temperature would be better suited. This way, boot time wouldn't be impacted by those waits too much. Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c index d8f4325..0575af5 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c @@ -66,10 +66,11 @@ nv40_sensor_setup(struct nouveau_therm *therm) if (style == NEW_STYLE) { nv_mask(therm, 0x15b8, 0x80000000, 0); nv_wr32(therm, 0x15b0, 0x80003fff); - mdelay(10); /* wait for the temperature to stabilize */ + mdelay(20); /* wait for the temperature to stabilize */ return nv_rd32(therm, 0x15b4) & 0x3fff; } else if (style == OLD_STYLE) { nv_wr32(therm, 0x15b0, 0xff); + mdelay(20); /* wait for the temperature to stabilize */ return nv_rd32(therm, 0x15b4) & 0xff; } else return -ENODEV; -- cgit v1.1 From 7591782b9f30a5a8bcbba5744c85050ff6743d69 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 5 Mar 2013 10:44:12 +0100 Subject: drm/nouveau/therm: do not make assumptions on temperature In nouveau_therm_sensor_event, temperature is stored as an uint8_t even though the original interface returns an int. This change should make it more obvious when the sensor is either very-ill-calibrated or when we selected the wrong sensor style on the nv40 family. Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index b37624a..0a17b95 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -106,16 +106,16 @@ void nouveau_therm_sensor_event(struct nouveau_therm *therm, const char *thresolds[] = { "fanboost", "downclock", "critical", "shutdown" }; - uint8_t temperature = therm->temp_get(therm); + int temperature = therm->temp_get(therm); if (thrs < 0 || thrs > 3) return; if (dir == NOUVEAU_THERM_THRS_FALLING) - nv_info(therm, "temperature (%u C) went below the '%s' threshold\n", + nv_info(therm, "temperature (%i C) went below the '%s' threshold\n", temperature, thresolds[thrs]); else - nv_info(therm, "temperature (%u C) hit the '%s' threshold\n", + nv_info(therm, "temperature (%i C) hit the '%s' threshold\n", temperature, thresolds[thrs]); active = (dir == NOUVEAU_THERM_THRS_RISING); -- cgit v1.1 From c4ce9246ca4708482a9a03e76f4177e9f46a13ef Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 5 Mar 2013 10:58:59 +0100 Subject: drm/nouveau/therm: remove some confusion introduced by therm_mode The kernel message "[ PTHERM][0000:01:00.0] Thermal management: disabled" is misleading as it actually means "fan management: disabled". This patch fixes both the source and the message to improve readability. Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/include/subdev/therm.h | 2 +- drivers/gpu/drm/nouveau/core/subdev/therm/base.c | 10 +++++----- drivers/gpu/drm/nouveau/core/subdev/therm/priv.h | 2 +- drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 2 +- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/therm.h b/drivers/gpu/drm/nouveau/core/include/subdev/therm.h index 6b17b61..0b20fc0 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/therm.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/therm.h @@ -4,7 +4,7 @@ #include #include -enum nouveau_therm_mode { +enum nouveau_therm_fan_mode { NOUVEAU_THERM_CTRL_NONE = 0, NOUVEAU_THERM_CTRL_MANUAL = 1, NOUVEAU_THERM_CTRL_AUTO = 2, diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c index f794dc8..321a55b 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -134,7 +134,7 @@ nouveau_therm_alarm(struct nouveau_alarm *alarm) } int -nouveau_therm_mode(struct nouveau_therm *therm, int mode) +nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode) { struct nouveau_therm_priv *priv = (void *)therm; struct nouveau_device *device = nv_device(therm); @@ -152,7 +152,7 @@ nouveau_therm_mode(struct nouveau_therm *therm, int mode) if (priv->mode == mode) return 0; - nv_info(therm, "Thermal management: %s\n", name[mode]); + nv_info(therm, "fan management: %s\n", name[mode]); nouveau_therm_update(therm, mode); return 0; } @@ -213,7 +213,7 @@ nouveau_therm_attr_set(struct nouveau_therm *therm, priv->fan->bios.max_duty = value; return 0; case NOUVEAU_THERM_ATTR_FAN_MODE: - return nouveau_therm_mode(therm, value); + return nouveau_therm_fan_mode(therm, value); case NOUVEAU_THERM_ATTR_THRS_FAN_BOOST: priv->bios_sensor.thrs_fan_boost.temp = value; priv->sensor.program_alarms(therm); @@ -263,7 +263,7 @@ _nouveau_therm_init(struct nouveau_object *object) return ret; if (priv->suspend >= 0) - nouveau_therm_mode(therm, priv->mode); + nouveau_therm_fan_mode(therm, priv->mode); priv->sensor.program_alarms(therm); return 0; } @@ -317,7 +317,7 @@ nouveau_therm_preinit(struct nouveau_therm *therm) nouveau_therm_sensor_ctor(therm); nouveau_therm_fan_ctor(therm); - nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_NONE); + nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE); return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h index 06b9870..d8483dd 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h @@ -102,7 +102,7 @@ struct nouveau_therm_priv { struct i2c_client *ic; }; -int nouveau_therm_mode(struct nouveau_therm *therm, int mode); +int nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode); int nouveau_therm_attr_get(struct nouveau_therm *therm, enum nouveau_therm_attr_type type); int nouveau_therm_attr_set(struct nouveau_therm *therm, diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 0a17b95..441f60b 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -123,7 +123,7 @@ void nouveau_therm_sensor_event(struct nouveau_therm *therm, case NOUVEAU_THERM_THRS_FANBOOST: if (active) { nouveau_therm_fan_set(therm, true, 100); - nouveau_therm_mode(therm, NOUVEAU_THERM_CTRL_AUTO); + nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_AUTO); } break; case NOUVEAU_THERM_THRS_DOWNCLOCK: -- cgit v1.1 From 13506e2ab40ebec3be3e2fda708d40d3ba972e3e Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Tue, 5 Mar 2013 11:24:04 +0100 Subject: drm/nouveau/therm-ic: the temperature is off by sensor_constant, warn the user Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/base.c | 2 +- drivers/gpu/drm/nouveau/core/subdev/therm/ic.c | 6 ++++-- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c index 321a55b..3f8083f 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -313,8 +313,8 @@ nouveau_therm_create_(struct nouveau_object *parent, int nouveau_therm_preinit(struct nouveau_therm *therm) { - nouveau_therm_ic_ctor(therm); nouveau_therm_sensor_ctor(therm); + nouveau_therm_ic_ctor(therm); nouveau_therm_fan_ctor(therm); nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE); diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c b/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c index e24090b..8b3adec 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/ic.c @@ -32,6 +32,7 @@ probe_monitoring_device(struct nouveau_i2c_port *i2c, struct i2c_board_info *info) { struct nouveau_therm_priv *priv = (void *)nouveau_therm(i2c); + struct nvbios_therm_sensor *sensor = &priv->bios_sensor; struct i2c_client *client; request_module("%s%s", I2C_MODULE_PREFIX, info->type); @@ -46,8 +47,9 @@ probe_monitoring_device(struct nouveau_i2c_port *i2c, } nv_info(priv, - "Found an %s at address 0x%x (controlled by lm_sensors)\n", - info->type, info->addr); + "Found an %s at address 0x%x (controlled by lm_sensors, " + "temp offset %+i C)\n", + info->type, info->addr, sensor->offset_constant); priv->ic = client; return true; -- cgit v1.1 From ad40d73ef533ab0ad16b4a1ab2f7870c1f8ab954 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Thu, 14 Mar 2013 23:51:16 +0100 Subject: drm/nv40/therm: disable temperature reading if the bios misses some parameters Reported-by: Konrad Rzeszutek Wilk Tested-by: Konrad Rzeszutek Wilk Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c | 10 ++++------ drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 9 --------- 2 files changed, 4 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c index 0575af5..c526d53 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c @@ -93,12 +93,10 @@ nv40_temp_get(struct nouveau_therm *therm) } else return -ENODEV; - if (sensor->slope_div == 0) - sensor->slope_div = 1; - if (sensor->offset_den == 0) - sensor->offset_den = 1; - if (sensor->slope_mult < 1) - sensor->slope_mult = 1; + /* if the slope or the offset is unset, do no use the sensor */ + if (!sensor->slope_div || !sensor->slope_mult || + !sensor->offset_num || !sensor->offset_den) + return -ENODEV; core_temp = core_temp * sensor->slope_mult / sensor->slope_div; core_temp = core_temp + sensor->offset_num / sensor->offset_den; diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 441f60b..0d94d1a 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -34,10 +34,6 @@ nouveau_therm_temp_set_defaults(struct nouveau_therm *therm) { struct nouveau_therm_priv *priv = (void *)therm; - priv->bios_sensor.slope_mult = 1; - priv->bios_sensor.slope_div = 1; - priv->bios_sensor.offset_num = 0; - priv->bios_sensor.offset_den = 1; priv->bios_sensor.offset_constant = 0; priv->bios_sensor.thrs_fan_boost.temp = 90; @@ -60,11 +56,6 @@ nouveau_therm_temp_safety_checks(struct nouveau_therm *therm) struct nouveau_therm_priv *priv = (void *)therm; struct nvbios_therm_sensor *s = &priv->bios_sensor; - if (!priv->bios_sensor.slope_div) - priv->bios_sensor.slope_div = 1; - if (!priv->bios_sensor.offset_den) - priv->bios_sensor.offset_den = 1; - /* enforce a minimum hysteresis on thresholds */ s->thrs_fan_boost.hysteresis = max_t(u8, s->thrs_fan_boost.hysteresis, 2); s->thrs_down_clock.hysteresis = max_t(u8, s->thrs_down_clock.hysteresis, 2); -- cgit v1.1 From 76c0295c389ad9ba19b668b5974cdd90eb95788e Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Fri, 15 Mar 2013 02:09:20 +0100 Subject: drm/nv40/therm: reserve negative temperatures for errors Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c index c526d53..a70d1b7 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/nv40.c @@ -102,6 +102,10 @@ nv40_temp_get(struct nouveau_therm *therm) core_temp = core_temp + sensor->offset_num / sensor->offset_den; core_temp = core_temp + sensor->offset_constant - 8; + /* reserve negative temperatures for errors */ + if (core_temp < 0) + core_temp = 0; + return core_temp; } -- cgit v1.1 From 98ee7c7c63f16e443f51abf08e5412f8eb44ad1e Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Fri, 15 Mar 2013 00:21:07 +0100 Subject: drm/nouveau/therm: disable auto fan management if temperature is not available Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/base.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c index 3f8083f..d6a0558 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -149,6 +149,11 @@ nouveau_therm_fan_mode(struct nouveau_therm *therm, int mode) (mode != NOUVEAU_THERM_CTRL_NONE && device->card_type >= NV_C0)) return -EINVAL; + /* do not allow automatic fan management if the thermal sensor is + * not available */ + if (priv->mode == 2 && therm->temp_get(therm) < 0) + return -EINVAL; + if (priv->mode == mode) return 0; -- cgit v1.1 From bf55eb843d266ad31696f17cf1f5c237409485cf Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Fri, 15 Mar 2013 00:42:38 +0100 Subject: drm/nouveau/therm: disable temperature management if the sensor isn't readable Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 0d94d1a..2a02c9f 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -193,7 +193,7 @@ alarm_timer_callback(struct nouveau_alarm *alarm) NOUVEAU_THERM_THRS_SHUTDOWN); /* schedule the next poll in one second */ - if (list_empty(&alarm->head)) + if (therm->temp_get(therm) >= 0 && list_empty(&alarm->head)) ptimer->alarm(ptimer, 1000 * 1000 * 1000, alarm); spin_unlock_irqrestore(&priv->sensor.alarm_program_lock, flags); -- cgit v1.1 From 0b3ee3772e11da2f36c91e542545780d3ed28415 Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Fri, 15 Mar 2013 01:47:16 +0100 Subject: drm/nouveau/therm: display the availability of the internal sensor Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/subdev/therm/base.c | 1 + drivers/gpu/drm/nouveau/core/subdev/therm/priv.h | 1 + drivers/gpu/drm/nouveau/core/subdev/therm/temp.c | 11 +++++++++++ 3 files changed, 13 insertions(+) diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c index d6a0558..a00a5a7 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/base.c @@ -323,6 +323,7 @@ nouveau_therm_preinit(struct nouveau_therm *therm) nouveau_therm_fan_ctor(therm); nouveau_therm_fan_mode(therm, NOUVEAU_THERM_CTRL_NONE); + nouveau_therm_sensor_preinit(therm); return 0; } diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h index d8483dd..438d982 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/priv.h @@ -122,6 +122,7 @@ int nouveau_therm_fan_sense(struct nouveau_therm *therm); int nouveau_therm_preinit(struct nouveau_therm *); +void nouveau_therm_sensor_preinit(struct nouveau_therm *); void nouveau_therm_sensor_set_threshold_state(struct nouveau_therm *therm, enum nouveau_therm_thrs thrs, enum nouveau_therm_thrs_state st); diff --git a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c index 2a02c9f..470f6a4 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c +++ b/drivers/gpu/drm/nouveau/core/subdev/therm/temp.c @@ -216,6 +216,17 @@ nouveau_therm_program_alarms_polling(struct nouveau_therm *therm) alarm_timer_callback(&priv->sensor.therm_poll_alarm); } +void +nouveau_therm_sensor_preinit(struct nouveau_therm *therm) +{ + const char *sensor_avail = "yes"; + + if (therm->temp_get(therm) < 0) + sensor_avail = "no"; + + nv_info(therm, "internal sensor: %s\n", sensor_avail); +} + int nouveau_therm_sensor_ctor(struct nouveau_therm *therm) { -- cgit v1.1 From 804ca90f3fe35dd7c12889eaa74a44abbc4b91fd Mon Sep 17 00:00:00 2001 From: Martin Peres Date: Fri, 15 Mar 2013 00:59:55 +0100 Subject: drm/nouveau/hwmon: do not expose a buggy temperature if it is unavailable Signed-off-by: Martin Peres Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_pm.c | 44 +++++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c index bb54098..936b442 100644 --- a/drivers/gpu/drm/nouveau/nouveau_pm.c +++ b/drivers/gpu/drm/nouveau/nouveau_pm.c @@ -402,8 +402,12 @@ nouveau_hwmon_show_temp(struct device *d, struct device_attribute *a, char *buf) struct drm_device *dev = dev_get_drvdata(d); struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_therm *therm = nouveau_therm(drm->device); + int temp = therm->temp_get(therm); - return snprintf(buf, PAGE_SIZE, "%d\n", therm->temp_get(therm) * 1000); + if (temp < 0) + return temp; + + return snprintf(buf, PAGE_SIZE, "%d\n", temp * 1000); } static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, nouveau_hwmon_show_temp, NULL, 0); @@ -871,7 +875,12 @@ static SENSOR_DEVICE_ATTR(pwm1_max, S_IRUGO | S_IWUSR, nouveau_hwmon_get_pwm1_max, nouveau_hwmon_set_pwm1_max, 0); -static struct attribute *hwmon_attributes[] = { +static struct attribute *hwmon_default_attributes[] = { + &sensor_dev_attr_name.dev_attr.attr, + &sensor_dev_attr_update_rate.dev_attr.attr, + NULL +}; +static struct attribute *hwmon_temp_attributes[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_auto_point1_pwm.dev_attr.attr, &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, @@ -882,8 +891,6 @@ static struct attribute *hwmon_attributes[] = { &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, &sensor_dev_attr_temp1_emergency.dev_attr.attr, &sensor_dev_attr_temp1_emergency_hyst.dev_attr.attr, - &sensor_dev_attr_name.dev_attr.attr, - &sensor_dev_attr_update_rate.dev_attr.attr, NULL }; static struct attribute *hwmon_fan_rpm_attributes[] = { @@ -898,8 +905,11 @@ static struct attribute *hwmon_pwm_fan_attributes[] = { NULL }; -static const struct attribute_group hwmon_attrgroup = { - .attrs = hwmon_attributes, +static const struct attribute_group hwmon_default_attrgroup = { + .attrs = hwmon_default_attributes, +}; +static const struct attribute_group hwmon_temp_attrgroup = { + .attrs = hwmon_temp_attributes, }; static const struct attribute_group hwmon_fan_rpm_attrgroup = { .attrs = hwmon_fan_rpm_attributes, @@ -931,13 +941,22 @@ nouveau_hwmon_init(struct drm_device *dev) } dev_set_drvdata(hwmon_dev, dev); - /* default sysfs entries */ - ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_attrgroup); + /* set the default attributes */ + ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_default_attrgroup); if (ret) { if (ret) goto error; } + /* if the card has a working thermal sensor */ + if (therm->temp_get(therm) >= 0) { + ret = sysfs_create_group(&hwmon_dev->kobj, &hwmon_temp_attrgroup); + if (ret) { + if (ret) + goto error; + } + } + /* if the card has a pwm fan */ /*XXX: incorrect, need better detection for this, some boards have * the gpio entries for pwm fan control even when there's no @@ -979,11 +998,10 @@ nouveau_hwmon_fini(struct drm_device *dev) struct nouveau_pm *pm = nouveau_pm(dev); if (pm->hwmon) { - sysfs_remove_group(&pm->hwmon->kobj, &hwmon_attrgroup); - sysfs_remove_group(&pm->hwmon->kobj, - &hwmon_pwm_fan_attrgroup); - sysfs_remove_group(&pm->hwmon->kobj, - &hwmon_fan_rpm_attrgroup); + sysfs_remove_group(&pm->hwmon->kobj, &hwmon_default_attrgroup); + sysfs_remove_group(&pm->hwmon->kobj, &hwmon_temp_attrgroup); + sysfs_remove_group(&pm->hwmon->kobj, &hwmon_pwm_fan_attrgroup); + sysfs_remove_group(&pm->hwmon->kobj, &hwmon_fan_rpm_attrgroup); hwmon_device_unregister(pm->hwmon); } -- cgit v1.1 From 778141e3cf0bf29f91cd3cb5c314ea477b9402a7 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 18 Mar 2013 11:41:46 +0900 Subject: perf: Reset hwc->last_period on sw clock events When cpu/task clock events are initialized, their sampling frequencies are converted to have a fixed value. However it missed to update the hwc->last_period which was set to 1 for initial sampling frequency calibration. Because this hwc->last_period value is used as a period in perf_swevent_ hrtime(), every recorded sample will have an incorrected period of 1. $ perf record -e task-clock noploop 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.158 MB perf.data (~6919 samples) ] $ perf report -n --show-total-period --stdio # Samples: 4K of event 'task-clock' # Event count (approx.): 4000 # # Overhead Samples Period Command Shared Object Symbol # ........ ............ ............ ....... ............. .................. # 99.95% 3998 3998 noploop noploop [.] main 0.03% 1 1 noploop libc-2.15.so [.] init_cacheinfo 0.03% 1 1 noploop ld-2.15.so [.] open_verify Note that it doesn't affect the non-sampling event so that the perf stat still gets correct value with or without this patch. $ perf stat -e task-clock noploop 1 Performance counter stats for 'noploop 1': 1000.272525 task-clock # 1.000 CPUs utilized 1.000560605 seconds time elapsed Signed-off-by: Namhyung Kim Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1363574507-18808-1-git-send-email-namhyung@kernel.org Signed-off-by: Ingo Molnar --- kernel/events/core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index b0cd865..fa79c37 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5647,6 +5647,7 @@ static void perf_swevent_init_hrtimer(struct perf_event *event) event->attr.sample_period = NSEC_PER_SEC / freq; hwc->sample_period = event->attr.sample_period; local64_set(&hwc->period_left, hwc->sample_period); + hwc->last_period = hwc->sample_period; event->attr.freq = 0; } } -- cgit v1.1 From 06d9db7273c7bd5b07624b313faeea57a4b31056 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Fri, 15 Mar 2013 18:58:50 +0530 Subject: usb: musb: gadget: do *unmap_dma_buffer* only for valid DMA addr musb does not use DMA buffer for ep0 but it uses the same giveback function *musb_g_giveback* for all endpoints (*musb_g_ep0_giveback* calls *musb_g_giveback*). So for ep0 case request.dma will be '0' and will result in kernel OOPS if tried to *unmap_dma_buffer* for requests in ep0. Fixed it by doing *unmap_dma_buffer* only for valid DMA addr and checking that musb_ep->dma is valid when unmapping. Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_gadget.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index be18537..83edded 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -141,7 +141,9 @@ static inline void map_dma_buffer(struct musb_request *request, static inline void unmap_dma_buffer(struct musb_request *request, struct musb *musb) { - if (!is_buffer_mapped(request)) + struct musb_ep *musb_ep = request->ep; + + if (!is_buffer_mapped(request) || !musb_ep->dma) return; if (request->request.dma == DMA_ADDR_INVALID) { @@ -195,7 +197,10 @@ __acquires(ep->musb->lock) ep->busy = 1; spin_unlock(&musb->lock); - unmap_dma_buffer(req, musb); + + if (!dma_mapping_error(&musb->g.dev, request->dma)) + unmap_dma_buffer(req, musb); + if (request->status == 0) dev_dbg(musb->controller, "%s done request %p, %d/%d\n", ep->end_point.name, request, -- cgit v1.1 From d610d98b5de6860feb21539726e9af7c9094151c Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Fri, 15 Mar 2013 16:27:13 +0900 Subject: perf: Generate EXIT event only once per task context perf_event_task_event() iterates pmu list and generate events for each eligible pmu context. But if task_event has task_ctx like in EXIT it'll generate events even though the pmu doesn't have an eligible one. Fix it by moving the code to proper places. Before this patch: $ perf record -n true [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.006 MB perf.data (~248 samples) ] $ perf report -D | tail Aggregated stats: TOTAL events: 73 MMAP events: 67 COMM events: 2 EXIT events: 4 cycles stats: TOTAL events: 73 MMAP events: 67 COMM events: 2 EXIT events: 4 After this patch: $ perf report -D | tail Aggregated stats: TOTAL events: 70 MMAP events: 67 COMM events: 2 EXIT events: 1 cycles stats: TOTAL events: 70 MMAP events: 67 COMM events: 2 EXIT events: 1 Signed-off-by: Namhyung Kim Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1363332433-7637-1-git-send-email-namhyung@kernel.org Signed-off-by: Ingo Molnar --- kernel/events/core.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index fa79c37..59412d0 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4434,12 +4434,15 @@ static void perf_event_task_event(struct perf_task_event *task_event) if (ctxn < 0) goto next; ctx = rcu_dereference(current->perf_event_ctxp[ctxn]); + if (ctx) + perf_event_task_ctx(ctx, task_event); } - if (ctx) - perf_event_task_ctx(ctx, task_event); next: put_cpu_ptr(pmu->pmu_cpu_context); } + if (task_event->task_ctx) + perf_event_task_ctx(task_event->task_ctx, task_event); + rcu_read_unlock(); } -- cgit v1.1 From 31b6945a899a30f9dffa9cba8ed2e494784810a9 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Sun, 17 Mar 2013 10:23:40 +0100 Subject: ALSA: hda - Fix missing beep detach in patch_conexant.c This leaks the beep input device after module unload, which leads to Oops. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=55321 Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 941bf6c..1051a88 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -3191,11 +3191,17 @@ static int cx_auto_build_controls(struct hda_codec *codec) return 0; } +static void cx_auto_free(struct hda_codec *codec) +{ + snd_hda_detach_beep_device(codec); + snd_hda_gen_free(codec); +} + static const struct hda_codec_ops cx_auto_patch_ops = { .build_controls = cx_auto_build_controls, .build_pcms = snd_hda_gen_build_pcms, .init = snd_hda_gen_init, - .free = snd_hda_gen_free, + .free = cx_auto_free, .unsol_event = snd_hda_jack_unsol_event, #ifdef CONFIG_PM .check_power_status = snd_hda_gen_check_power_status, -- cgit v1.1 From a37b2dc52b88ccd926099d852eae1bb324bc92eb Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Sat, 2 Mar 2013 12:31:39 +0530 Subject: ARC: Remove SET_PERSONALITY (tracks cross-arch change) Tracks commit e72837e3e7b "default SET_PERSONALITY() in linux/elf.h" Signed-off-by: Vineet Gupta --- arch/arc/include/asm/elf.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arc/include/asm/elf.h b/arch/arc/include/asm/elf.h index f4c8d36..a262828 100644 --- a/arch/arc/include/asm/elf.h +++ b/arch/arc/include/asm/elf.h @@ -72,7 +72,4 @@ extern int elf_check_arch(const struct elf32_hdr *); */ #define ELF_PLATFORM (NULL) -#define SET_PERSONALITY(ex) \ - set_personality(PER_LINUX | (current->personality & (~PER_MASK))) - #endif -- cgit v1.1 From 65c10553552b487a71bf5e4676743435046fae6f Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Mar 2013 20:52:30 +0900 Subject: kprobes: Make hash_64() as always inlined Because hash_64() is called from the get_kprobe() inside int3 handler, kernel causes int3 recursion and crashes if kprobes user puts a probe on it. Usually hash_64() is inlined into caller function, but in some cases, it has instances by gcc's interprocedural constant propagation. This patch uses __always_inline instead of inline to prevent gcc from doing such things. Reported-by: Timo Juhani Lindfors Signed-off-by: Masami Hiramatsu Acked-by: Ananth N Mavinakayanahalli Cc: Pavel Emelyanov Cc: Jiri Kosina Cc: Nadia Yvette Chambers Cc: yrl.pp-manager.tt@hitachi.com Cc: David S. Miller Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20130314115230.19690.39387.stgit@mhiramat-M0-7522 Signed-off-by: Ingo Molnar --- include/linux/hash.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/hash.h b/include/linux/hash.h index 61c97ae..f09a0ae 100644 --- a/include/linux/hash.h +++ b/include/linux/hash.h @@ -15,6 +15,7 @@ */ #include +#include /* 2^31 + 2^29 - 2^25 + 2^22 - 2^19 - 2^16 + 1 */ #define GOLDEN_RATIO_PRIME_32 0x9e370001UL @@ -31,7 +32,7 @@ #error Wordsize not 32 or 64 #endif -static inline u64 hash_64(u64 val, unsigned int bits) +static __always_inline u64 hash_64(u64 val, unsigned int bits) { u64 hash = val; -- cgit v1.1 From 9a556ab998071457e79b319f2527642dd6e50617 Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 14 Mar 2013 20:52:43 +0900 Subject: kprobes/x86: Check Interrupt Flag modifier when registering probe Currently kprobes check whether the copied instruction modifies IF (interrupt flag) on each probe hit. This results not only in introducing overhead but also involving inat_get_opcode_attribute into the kprobes hot path, and it can cause an infinite recursive call (and kernel panic in the end). Actually, since the copied instruction itself can never be modified on the buffer, it is needless to analyze the instruction on every probe hit. To fix this issue, we check it only once when registering probe and store the result on ainsn->if_modifier. Reported-by: Timo Juhani Lindfors Signed-off-by: Masami Hiramatsu Acked-by: Ananth N Mavinakayanahalli Cc: yrl.pp-manager.tt@hitachi.com Cc: Steven Rostedt Cc: David S. Miller Cc: Linus Torvalds Link: http://lkml.kernel.org/r/20130314115242.19690.33573.stgit@mhiramat-M0-7522 Signed-off-by: Ingo Molnar --- arch/x86/include/asm/kprobes.h | 1 + arch/x86/kernel/kprobes/core.c | 5 ++++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h index d3ddd17..5a6d287 100644 --- a/arch/x86/include/asm/kprobes.h +++ b/arch/x86/include/asm/kprobes.h @@ -77,6 +77,7 @@ struct arch_specific_insn { * a post_handler or break_handler). */ int boostable; + bool if_modifier; }; struct arch_optimized_insn { diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c index 3f06e61..7bfe318 100644 --- a/arch/x86/kernel/kprobes/core.c +++ b/arch/x86/kernel/kprobes/core.c @@ -375,6 +375,9 @@ static void __kprobes arch_copy_kprobe(struct kprobe *p) else p->ainsn.boostable = -1; + /* Check whether the instruction modifies Interrupt Flag or not */ + p->ainsn.if_modifier = is_IF_modifier(p->ainsn.insn); + /* Also, displacement change doesn't affect the first byte */ p->opcode = p->ainsn.insn[0]; } @@ -434,7 +437,7 @@ static void __kprobes set_current_kprobe(struct kprobe *p, struct pt_regs *regs, __this_cpu_write(current_kprobe, p); kcb->kprobe_saved_flags = kcb->kprobe_old_flags = (regs->flags & (X86_EFLAGS_TF | X86_EFLAGS_IF)); - if (is_IF_modifier(p->ainsn.insn)) + if (p->ainsn.if_modifier) kcb->kprobe_saved_flags &= ~X86_EFLAGS_IF; } -- cgit v1.1 From fd4a5aef002bb57e8a35ed34d8a878034b9bde94 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Sun, 17 Mar 2013 14:49:57 +0100 Subject: perf/x86: Add SNB/SNB-EP scheduling constraints for cycle_activity event Add scheduling constraints for SNB/SNB-EP CYCLE_ACTIVITY event as defined by SDM Jan 2013 edition. The STALLS umasks are combinations with the NO_DISPATCH umask. Signed-off-by: Stephane Eranian Cc: peterz@infradead.org Cc: ak@linux.intel.com Cc: jolsa@redhat.com Link: http://lkml.kernel.org/r/20130317134957.GA8550@quad Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c index 529c893..dab7580 100644 --- a/arch/x86/kernel/cpu/perf_event_intel.c +++ b/arch/x86/kernel/cpu/perf_event_intel.c @@ -101,6 +101,10 @@ static struct event_constraint intel_snb_event_constraints[] __read_mostly = FIXED_EVENT_CONSTRAINT(0x00c0, 0), /* INST_RETIRED.ANY */ FIXED_EVENT_CONSTRAINT(0x003c, 1), /* CPU_CLK_UNHALTED.CORE */ FIXED_EVENT_CONSTRAINT(0x0300, 2), /* CPU_CLK_UNHALTED.REF */ + INTEL_UEVENT_CONSTRAINT(0x04a3, 0xf), /* CYCLE_ACTIVITY.CYCLES_NO_DISPATCH */ + INTEL_UEVENT_CONSTRAINT(0x05a3, 0xf), /* CYCLE_ACTIVITY.STALLS_L2_PENDING */ + INTEL_UEVENT_CONSTRAINT(0x02a3, 0x4), /* CYCLE_ACTIVITY.CYCLES_L1D_PENDING */ + INTEL_UEVENT_CONSTRAINT(0x06a3, 0x4), /* CYCLE_ACTIVITY.STALLS_L1D_PENDING */ INTEL_EVENT_CONSTRAINT(0x48, 0x4), /* L1D_PEND_MISS.PENDING */ INTEL_UEVENT_CONSTRAINT(0x01c0, 0x2), /* INST_RETIRED.PREC_DIST */ INTEL_EVENT_CONSTRAINT(0xcd, 0x8), /* MEM_TRANS_RETIRED.LOAD_LATENCY */ -- cgit v1.1 From a86b1a2cd2f81f74e815e07f756edd7bc5b6f034 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Mar 2013 11:00:44 +0100 Subject: ALSA: hda/cirrus - Fix the digital beep registration The argument passed to snd_hda_attach_beep_device() is a widget NID while spec->beep_amp holds the composed value for amp controls. Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index 1051a88..2a89d1ee 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -1142,7 +1142,7 @@ static int patch_cxt5045(struct hda_codec *codec) } if (spec->beep_amp) - snd_hda_attach_beep_device(codec, spec->beep_amp); + snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp)); return 0; } @@ -1921,7 +1921,7 @@ static int patch_cxt5051(struct hda_codec *codec) } if (spec->beep_amp) - snd_hda_attach_beep_device(codec, spec->beep_amp); + snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp)); return 0; } @@ -3099,7 +3099,7 @@ static int patch_cxt5066(struct hda_codec *codec) } if (spec->beep_amp) - snd_hda_attach_beep_device(codec, spec->beep_amp); + snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp)); return 0; } @@ -3397,7 +3397,7 @@ static int patch_conexant_auto(struct hda_codec *codec) codec->patch_ops = cx_auto_patch_ops; if (spec->beep_amp) - snd_hda_attach_beep_device(codec, spec->beep_amp); + snd_hda_attach_beep_device(codec, get_amp_nid_(spec->beep_amp)); /* Some laptops with Conexant chips show stalls in S3 resume, * which falls into the single-cmd mode. -- cgit v1.1 From 0d96724e298c08ba24589b4802b0a26b6a237721 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 18 Mar 2013 10:12:56 +0000 Subject: arm64: Removed unused variable in compat_setup_rt_frame() Recent clean-up of the compat signal code left an unused 'stack' variable. Signed-off-by: Catalin Marinas --- arch/arm64/kernel/signal32.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index 7f4f367..e393174 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -549,7 +549,6 @@ int compat_setup_rt_frame(int usig, struct k_sigaction *ka, siginfo_t *info, sigset_t *set, struct pt_regs *regs) { struct compat_rt_sigframe __user *frame; - compat_stack_t stack; int err = 0; frame = compat_get_sigframe(ka, regs, sizeof(*frame)); -- cgit v1.1 From 9d1a455b0ca1c2c956b4d9ab212864a8695270f1 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Mar 2013 11:25:36 +0100 Subject: drm/i915: Use the fixed pixel clock for eDP in intel_dp_set_m_n() The eDP output on HP Z1 is still broken when X is started even after fixing the infinite link-train loop. The regression was introduced in 3.6 kernel for cleaning up the mode clock handling code in intel_dp.c by the commit [71244653: drm/i915: adjusted_mode->clock in the dp mode_fix]. In the past, the clock of the reference mode was modified in intel_dp_mode_fixup() in the case of eDP fixed clock, and this clock was used for calculating in intel_dp_set_m_n(). This override was removed, thus the wrong mode clock is used for the calculation, resulting in a psychedelic smoking output in the end. This patch corrects the clock to be used in the place. v1->v2: Use intel_edp_target_clock() for checking eDP fixed clock instead of open code as in ironlake_set_m_n(). Cc: Signed-off-by: Takashi Iwai Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index d46dde5..d7d4afe 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -820,6 +820,7 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, struct intel_link_m_n m_n; int pipe = intel_crtc->pipe; enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder; + int target_clock; /* * Find the lane count in the intel_encoder private @@ -835,13 +836,22 @@ intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode, } } + target_clock = mode->clock; + for_each_encoder_on_crtc(dev, crtc, intel_encoder) { + if (intel_encoder->type == INTEL_OUTPUT_EDP) { + target_clock = intel_edp_target_clock(intel_encoder, + mode); + break; + } + } + /* * Compute the GMCH and Link ratios. The '3' here is * the number of bytes_per_pixel post-LUT, which we always * set up for 8-bits of R/G/B, or 3 bytes total. */ intel_link_compute_m_n(intel_crtc->bpp, lane_count, - mode->clock, adjusted_mode->clock, &m_n); + target_clock, adjusted_mode->clock, &m_n); if (IS_HASWELL(dev)) { I915_WRITE(PIPE_DATA_M1(cpu_transcoder), -- cgit v1.1 From 362132d228ef37c1e2d31ad5d649a7ed65efe539 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 13 Mar 2013 22:28:46 +0100 Subject: MAINTAINERS: intel-gfx is no longer subscribers-only It is though still filtered for non-subscribers, but without pissing off people with moderation queue spam. So drop the subscribers-only tag to make getmaintainers.pl tdrt. Acked-by: Dave Airlie Signed-off-by: Daniel Vetter --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 9561658..16439ee 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2629,7 +2629,7 @@ F: include/uapi/drm/ INTEL DRM DRIVERS (excluding Poulsbo, Moorestown and derivative chipsets) M: Daniel Vetter -L: intel-gfx@lists.freedesktop.org (subscribers-only) +L: intel-gfx@lists.freedesktop.org L: dri-devel@lists.freedesktop.org T: git git://people.freedesktop.org/~danvet/drm-intel S: Supported -- cgit v1.1 From a2c91547b5b1b9ae515851a85b5574f205b8e1c4 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Mon, 18 Feb 2013 18:22:14 +0000 Subject: arm64: Fix build error with !SMP The __atomic_hash is only defined when SMP is enabled but the arm64ksyms.c exports it even for the UP case. Signed-off-by: Catalin Marinas --- arch/arm64/kernel/arm64ksyms.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c index cef3925..aa3e948 100644 --- a/arch/arm64/kernel/arm64ksyms.c +++ b/arch/arm64/kernel/arm64ksyms.c @@ -40,7 +40,9 @@ EXPORT_SYMBOL(__copy_to_user); EXPORT_SYMBOL(__clear_user); /* bitops */ +#ifdef CONFIG_SMP EXPORT_SYMBOL(__atomic_hash); +#endif /* physical memory */ EXPORT_SYMBOL(memstart_addr); -- cgit v1.1 From 18931c892724cb9408811c793fe2656d11573b3a Mon Sep 17 00:00:00 2001 From: Andreas Schwab Date: Tue, 26 Feb 2013 16:55:54 +0000 Subject: arm64: fix padding computation in struct ucontext The expression to compute the padding needed to fill the uc_sigmask field to 1024 bits actually computes the padding needed for 1080 bits. Fortunately, due to the 16-byte alignment of the following field (uc_mcontext) the definition in glibc contains enough bytes of padding after uc_sigmask so that the overall offsets and size match in both definitions. Signed-off-by: Andreas Schwab Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/ucontext.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/ucontext.h b/arch/arm64/include/asm/ucontext.h index bde9607..42e04c8 100644 --- a/arch/arm64/include/asm/ucontext.h +++ b/arch/arm64/include/asm/ucontext.h @@ -22,7 +22,7 @@ struct ucontext { stack_t uc_stack; sigset_t uc_sigmask; /* glibc uses a 1024-bit sigset_t */ - __u8 __unused[(1024 - sizeof(sigset_t)) / 8]; + __u8 __unused[1024 / 8 - sizeof(sigset_t)]; /* last for future expansion */ struct sigcontext uc_mcontext; }; -- cgit v1.1 From 4502403dcf8f5c76abd4dbab8726c8e4ecb5cd34 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Sat, 16 Mar 2013 12:48:11 +0300 Subject: selinux: use GFP_ATOMIC under spin_lock The call tree here is: sk_clone_lock() <- takes bh_lock_sock(newsk); xfrm_sk_clone_policy() __xfrm_sk_clone_policy() clone_policy() <- uses GFP_ATOMIC for allocations security_xfrm_policy_clone() security_ops->xfrm_policy_clone_security() selinux_xfrm_policy_clone() Signed-off-by: Dan Carpenter Cc: stable@kernel.org Signed-off-by: James Morris --- security/selinux/xfrm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c index 48665ec..8ab2951 100644 --- a/security/selinux/xfrm.c +++ b/security/selinux/xfrm.c @@ -310,7 +310,7 @@ int selinux_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, if (old_ctx) { new_ctx = kmalloc(sizeof(*old_ctx) + old_ctx->ctx_len, - GFP_KERNEL); + GFP_ATOMIC); if (!new_ctx) return -ENOMEM; -- cgit v1.1 From b4811bacbc68f6e17d442df88f98afaa9394d4f5 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 13 Mar 2013 17:36:37 +0100 Subject: ARM: fix CONFIG_VIRT_TO_BUS handling 887cbce0 "arch Kconfig: centralise CONFIG_ARCH_NO_VIRT_TO_BUS" and 4febd95a8 "Select VIRT_TO_BUS directly where needed" from Stephen Rothwell changed globally how CONFIG_VIRT_TO_BUS is selected, while my own a5d533ee0 "ARM: disable virt_to_bus/ virt_to_bus almost everywhere" was merged at the same time and changed which platforms select it on ARM. The result of this conflict was that we again see CONFIG_VIRT_TO_BUS on all ARM systems. This patch fixes up the problem and removes CONFIG_ARCH_NO_VIRT_TO_BUS again on ARM. Signed-off-by: Arnd Bergmann Cc: Russell King Cc: Stephen Rothwell --- arch/arm/Kconfig | 7 ++----- arch/arm/mach-footbridge/Kconfig | 1 + 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ca1b6fd..6d6e77c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -49,7 +49,6 @@ config ARM select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 - select HAVE_VIRT_TO_BUS select KTIME_SCALAR select PERF_USE_VMALLOC select RTC_LIB @@ -743,6 +742,7 @@ config ARCH_RPC select NEED_MACH_IO_H select NEED_MACH_MEMORY_H select NO_IOPORT + select VIRT_TO_BUS help On the Acorn Risc-PC, Linux can support the internal IDE disk and CD-ROM interface, serial and parallel port, and the floppy drive. @@ -878,6 +878,7 @@ config ARCH_SHARK select ISA_DMA select NEED_MACH_MEMORY_H select PCI + select VIRT_TO_BUS select ZONE_DMA help Support for the StrongARM based Digital DNARD machine, also known @@ -1461,10 +1462,6 @@ config ISA_DMA bool select ISA_DMA_API -config ARCH_NO_VIRT_TO_BUS - def_bool y - depends on !ARCH_RPC && !ARCH_NETWINDER && !ARCH_SHARK - # Select ISA DMA interface config ISA_DMA_API bool diff --git a/arch/arm/mach-footbridge/Kconfig b/arch/arm/mach-footbridge/Kconfig index abda5a1..0f2111a 100644 --- a/arch/arm/mach-footbridge/Kconfig +++ b/arch/arm/mach-footbridge/Kconfig @@ -67,6 +67,7 @@ config ARCH_NETWINDER select ISA select ISA_DMA select PCI + select VIRT_TO_BUS help Say Y here if you intend to run this kernel on the Rebel.COM NetWinder. Information about this machine can be found at: -- cgit v1.1 From 3d464d9b71ef2f2b40a4bc9dcf06794fd1be9d12 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Mon, 18 Mar 2013 09:45:42 -0400 Subject: HID: usbhid: quirk for Realtek Multi-card reader This device needs to be added to the quirks list with HID_QUIRK_NO_INIT_REPORTS, otherwise it causes 10 seconds timeout during report initialization. This fixes Red Hat bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=806587 Cc: stable@vger.kernel.org Signed-off-by: Josh Boyer Signed-off-by: Jiri Kosina --- drivers/hid/hid-ids.h | 3 +++ drivers/hid/usbhid/hid-quirks.c | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 6e5c2ff..3fc5c33 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -681,6 +681,9 @@ #define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001 0x3001 #define USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008 0x3008 +#define USB_VENDOR_ID_REALTEK 0x0bda +#define USB_DEVICE_ID_REALTEK_READER 0x0152 + #define USB_VENDOR_ID_ROCCAT 0x1e7d #define USB_DEVICE_ID_ROCCAT_ARVO 0x30d4 #define USB_DEVICE_ID_ROCCAT_ISKU 0x319c diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index e0e6abf..e991d81 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -80,6 +80,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_PRODIGE, USB_DEVICE_ID_PRODIGE_CORDLESS, HID_QUIRK_NOGET }, { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3001, HID_QUIRK_NOGET }, { USB_VENDOR_ID_QUANTA, USB_DEVICE_ID_QUANTA_OPTICAL_TOUCH_3008, HID_QUIRK_NOGET }, + { USB_VENDOR_ID_REALTEK, USB_DEVICE_ID_REALTEK_READER, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_SENNHEISER, USB_DEVICE_ID_SENNHEISER_BTD500USB, HID_QUIRK_NOGET }, { USB_VENDOR_ID_SIGMATEL, USB_DEVICE_ID_SIGMATEL_STMP3780, HID_QUIRK_NOGET }, { USB_VENDOR_ID_SUN, USB_DEVICE_ID_RARITAN_KVM_DONGLE, HID_QUIRK_NOGET }, -- cgit v1.1 From 620ae90ed8ca8b6e40cb9e10279b4f5ef9f0ab81 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Mon, 18 Mar 2013 09:47:02 -0400 Subject: HID: usbhid: quirk for MSI GX680R led panel This keyboard backlight device causes a 10 second delay to boot. Add it to the quirk list with HID_QUIRK_NO_INIT_REPORTS. This fixes Red Hat bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=907221 Cc: stable@vger.kernel.org Signed-off-by: Josh Boyer Signed-off-by: Jiri Kosina --- drivers/hid/hid-ids.h | 3 +++ drivers/hid/usbhid/hid-quirks.c | 1 + 2 files changed, 4 insertions(+) diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 3fc5c33..49b88a0 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -587,6 +587,9 @@ #define USB_VENDOR_ID_MONTEREY 0x0566 #define USB_DEVICE_ID_GENIUS_KB29E 0x3004 +#define USB_VENDOR_ID_MSI 0x1770 +#define USB_DEVICE_ID_MSI_GX680R_LED_PANEL 0xff00 + #define USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR 0x0400 #define USB_DEVICE_ID_N_S_HARMONY 0xc359 diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index e991d81..476c984 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -73,6 +73,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET }, + { USB_VENDIR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS }, -- cgit v1.1 From 570637dc8eeb2faba06228d497ff40bb019bcc93 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Mon, 18 Mar 2013 15:50:10 +0100 Subject: HID: usbhid: fix build problem Fix build problem caused by typo introduced by 620ae90ed8 ("HID: usbhid: quirk for MSI GX680R led panel"). Reported-by: fengguang.wu@intel.com Signed-off-by: Jiri Kosina --- drivers/hid/usbhid/hid-quirks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/usbhid/hid-quirks.c b/drivers/hid/usbhid/hid-quirks.c index 476c984..19b8360 100644 --- a/drivers/hid/usbhid/hid-quirks.c +++ b/drivers/hid/usbhid/hid-quirks.c @@ -73,7 +73,7 @@ static const struct hid_blacklist { { USB_VENDOR_ID_FORMOSA, USB_DEVICE_ID_FORMOSA_IR_RECEIVER, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_FREESCALE, USB_DEVICE_ID_FREESCALE_MX28, HID_QUIRK_NOGET }, { USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_NOGET }, - { USB_VENDIR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, + { USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GX680R_LED_PANEL, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_NOVATEK, USB_DEVICE_ID_NOVATEK_MOUSE, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN, HID_QUIRK_NO_INIT_REPORTS }, { USB_VENDOR_ID_PIXART, USB_DEVICE_ID_PIXART_OPTICAL_TOUCH_SCREEN1, HID_QUIRK_NO_INIT_REPORTS }, -- cgit v1.1 From f8264340e694604863255cc0276491d17c402390 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 25 Feb 2013 10:56:01 -0800 Subject: USB: xhci - fix bit definitions for IMAN register According to XHCI specification (5.5.2.1) the IP is bit 0 and IE is bit 1 of IMAN register. Previously their definitions were reversed. Even though there are no ill effects being observed from the swapped definitions (because IMAN_IP is RW1C and in legacy PCI case we come in with it already set to 1 so it was clearing itself even though we were setting IMAN_IE instead of IMAN_IP), we should still correct the values. This patch should be backported to kernels as old as 2.6.36, that contain the commit 4e833c0b87a30798e67f06120cecebef6ee9644c "xhci: don't re-enable IE constantly". Signed-off-by: Dmitry Torokhov Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org --- drivers/usb/host/xhci.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index f791bd0..2c510e4 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -206,8 +206,8 @@ struct xhci_op_regs { /* bits 12:31 are reserved (and should be preserved on writes). */ /* IMAN - Interrupt Management Register */ -#define IMAN_IP (1 << 1) -#define IMAN_IE (1 << 0) +#define IMAN_IE (1 << 1) +#define IMAN_IP (1 << 0) /* USBSTS - USB status - status bitmasks */ /* HC not running - set to 1 when run/stop bit is cleared. */ -- cgit v1.1 From 0e401101db49959f5783f6ee9e676124b5a183ac Mon Sep 17 00:00:00 2001 From: Dmitry Monakhov Date: Mon, 18 Mar 2013 11:40:19 -0400 Subject: ext4: fix memory leakage in mext_check_coverage Regression was introduced by following commit 8c854473 TESTCASE (git://oss.sgi.com/xfs/cmds/xfstests.git): #while true;do ./check 301 || break ;done Also fix potential memory leakage in get_ext_path() once ext4_ext_find_extent() have failed. Signed-off-by: Dmitry Monakhov Signed-off-by: "Theodore Ts'o" --- fs/ext4/move_extent.c | 35 +++++++++++++++++++---------------- 1 file changed, 19 insertions(+), 16 deletions(-) diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index c1f15b2..bbae4ed1 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -32,16 +32,18 @@ */ static inline int get_ext_path(struct inode *inode, ext4_lblk_t lblock, - struct ext4_ext_path **path) + struct ext4_ext_path **orig_path) { int ret = 0; + struct ext4_ext_path *path; - *path = ext4_ext_find_extent(inode, lblock, *path); - if (IS_ERR(*path)) { - ret = PTR_ERR(*path); - *path = NULL; - } else if ((*path)[ext_depth(inode)].p_ext == NULL) + path = ext4_ext_find_extent(inode, lblock, *orig_path); + if (IS_ERR(path)) + ret = PTR_ERR(path); + else if (path[ext_depth(inode)].p_ext == NULL) ret = -ENODATA; + else + *orig_path = path; return ret; } @@ -611,24 +613,25 @@ mext_check_coverage(struct inode *inode, ext4_lblk_t from, ext4_lblk_t count, { struct ext4_ext_path *path = NULL; struct ext4_extent *ext; + int ret = 0; ext4_lblk_t last = from + count; while (from < last) { *err = get_ext_path(inode, from, &path); if (*err) - return 0; + goto out; ext = path[ext_depth(inode)].p_ext; - if (!ext) { - ext4_ext_drop_refs(path); - return 0; - } - if (uninit != ext4_ext_is_uninitialized(ext)) { - ext4_ext_drop_refs(path); - return 0; - } + if (uninit != ext4_ext_is_uninitialized(ext)) + goto out; from += ext4_ext_get_actual_len(ext); ext4_ext_drop_refs(path); } - return 1; + ret = 1; +out: + if (path) { + ext4_ext_drop_refs(path); + kfree(path); + } + return ret; } /** -- cgit v1.1 From 039eb75350acd1131a18a9bd12a0d4e1fb17892e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 18 Mar 2013 16:55:49 +0100 Subject: ALSA: hda - Fix yet missing GPIO/EAPD setup in cirrus driver I forgot to update spec->gpio_data in the automute hook, so it will be overridden at the init sequence, thus the machine is still silent when no headphone jack is plugged at boot time. Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_cirrus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c index 60d08f6..0d9c58f 100644 --- a/sound/pci/hda/patch_cirrus.c +++ b/sound/pci/hda/patch_cirrus.c @@ -168,10 +168,10 @@ static void cs_automute(struct hda_codec *codec) snd_hda_gen_update_outputs(codec); if (spec->gpio_eapd_hp) { - unsigned int gpio = spec->gen.hp_jack_present ? + spec->gpio_data = spec->gen.hp_jack_present ? spec->gpio_eapd_hp : spec->gpio_eapd_speaker; snd_hda_codec_write(codec, 0x01, 0, - AC_VERB_SET_GPIO_DATA, gpio); + AC_VERB_SET_GPIO_DATA, spec->gpio_data); } } -- cgit v1.1 From b009aac12cd0fe34293c68af8ac48b85be3bd858 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Maciej=20=C5=BBenczykowski?= Date: Fri, 15 Mar 2013 11:56:17 +0000 Subject: bnx2x: fix occasional statistics off-by-4GB error MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The UPDATE_QSTAT function introduced on February 15, 2012 in commit 1355b704b9ba "bnx2x: consistent statistics after internal driver reload" incorrectly fails to handle overflow during addition of the lower 32-bit field of a stat. This bug is present since 3.4-rc1 and should thus be considered a candidate for stable 3.4+ releases. Google-Bug-Id: 8374428 Signed-off-by: Maciej Żenczykowski Cc: Mintz Yuval Acked-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h index 364e37e..198f6f1 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h @@ -459,8 +459,9 @@ struct bnx2x_fw_port_stats_old { #define UPDATE_QSTAT(s, t) \ do { \ - qstats->t##_hi = qstats_old->t##_hi + le32_to_cpu(s.hi); \ qstats->t##_lo = qstats_old->t##_lo + le32_to_cpu(s.lo); \ + qstats->t##_hi = qstats_old->t##_hi + le32_to_cpu(s.hi) \ + + ((qstats->t##_lo < qstats_old->t##_lo) ? 1 : 0); \ } while (0) #define UPDATE_QSTAT_OLD(f) \ -- cgit v1.1 From ebaf5795ef57a70a042ea259448a465024e2821d Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Mon, 18 Mar 2013 23:45:11 +0800 Subject: Bluetooth: Add support for Dell[QCA 0cf3:817a] Add support for the AR9462 chip T: Bus=03 Lev=01 Prnt=01 Port=08 Cnt=01 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0cf3 ProdID=817a Rev= 0.02 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms Cc: Cc: Gustavo Padovan Signed-off-by: Ming Lei Signed-off-by: Gustavo Padovan --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 0a6ef6b..8af01c1 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -77,6 +77,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x0CF3, 0x3004) }, { USB_DEVICE(0x0CF3, 0x3008) }, { USB_DEVICE(0x0CF3, 0x311D) }, + { USB_DEVICE(0x0CF3, 0x817a) }, { USB_DEVICE(0x13d3, 0x3375) }, { USB_DEVICE(0x04CA, 0x3004) }, { USB_DEVICE(0x04CA, 0x3005) }, @@ -112,6 +113,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 11ac303..2cc5f77 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -135,6 +135,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, -- cgit v1.1 From 0d4f0608619de59fd8169dd8e72aadc28d80e715 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 18 Mar 2013 07:01:28 +0000 Subject: tcp: dont handle MTU reduction on LISTEN socket When an ICMP ICMP_FRAG_NEEDED (or ICMPV6_PKT_TOOBIG) message finds a LISTEN socket, and this socket is currently owned by the user, we set TCP_MTU_REDUCED_DEFERRED flag in listener tsq_flags. This is bad because if we clone the parent before it had a chance to clear the flag, the child inherits the tsq_flags value, and next tcp_release_cb() on the child will decrement sk_refcnt. Result is that we might free a live TCP socket, as reported by Dormando. IPv4: Attempt to release TCP socket in state 1 Fix this issue by testing sk_state against TCP_LISTEN early, so that we set TCP_MTU_REDUCED_DEFERRED on appropriate sockets (not a LISTEN one) This bug was introduced in commit 563d34d05786 (tcp: dont drop MTU reduction indications) Reported-by: dormando Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 14 +++++++------- net/ipv6/tcp_ipv6.c | 7 +++++++ 2 files changed, 14 insertions(+), 7 deletions(-) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 4a8ec45..d09203c 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -274,13 +274,6 @@ static void tcp_v4_mtu_reduced(struct sock *sk) struct inet_sock *inet = inet_sk(sk); u32 mtu = tcp_sk(sk)->mtu_info; - /* We are not interested in TCP_LISTEN and open_requests (SYN-ACKs - * send out by Linux are always <576bytes so they should go through - * unfragmented). - */ - if (sk->sk_state == TCP_LISTEN) - return; - dst = inet_csk_update_pmtu(sk, mtu); if (!dst) return; @@ -408,6 +401,13 @@ void tcp_v4_err(struct sk_buff *icmp_skb, u32 info) goto out; if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */ + /* We are not interested in TCP_LISTEN and open_requests + * (SYN-ACKs send out by Linux are always <576bytes so + * they should go through unfragmented). + */ + if (sk->sk_state == TCP_LISTEN) + goto out; + tp->mtu_info = info; if (!sock_owned_by_user(sk)) { tcp_v4_mtu_reduced(sk); diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 9b64600..f6d629f 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -389,6 +389,13 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, } if (type == ICMPV6_PKT_TOOBIG) { + /* We are not interested in TCP_LISTEN and open_requests + * (SYN-ACKs send out by Linux are always <576bytes so + * they should go through unfragmented). + */ + if (sk->sk_state == TCP_LISTEN) + goto out; + tp->mtu_info = ntohl(info); if (!sock_owned_by_user(sk)) tcp_v6_mtu_reduced(sk); -- cgit v1.1 From 83cdadd8b0559c93728d065d23ca3485fa567e54 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 22 Feb 2013 13:32:56 -0500 Subject: xfs: fix potential infinite loop in xfs_iomap_prealloc_size() If freesp == 0, we could end up in an infinite loop while squashing the preallocation. Break the loop when we've killed the prealloc entirely. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Signed-off-by: Ben Myers (cherry picked from commit e78c420bfc2608bb5f9a0b9165b1071c1e31166a) --- fs/xfs/xfs_iomap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index 912d83d..b0b0f44 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -413,7 +413,7 @@ xfs_iomap_prealloc_size( * have a large file on a small filesystem and the above * lowspace thresholds are smaller than MAXEXTLEN. */ - while (alloc_blocks >= freesp) + while (alloc_blocks && alloc_blocks >= freesp) alloc_blocks >>= 4; } -- cgit v1.1 From 66db3feb486c01349f767b98ebb10b0c3d2d021b Mon Sep 17 00:00:00 2001 From: CQ Tang Date: Mon, 18 Mar 2013 11:02:21 -0400 Subject: x86-64: Fix the failure case in copy_user_handle_tail() The increment of "to" in copy_user_handle_tail() will have incremented before a failure has been noted. This causes us to skip a byte in the failure case. Only do the increment when assured there is no failure. Signed-off-by: CQ Tang Link: http://lkml.kernel.org/r/20130318150221.8439.993.stgit@phlsvslse11.ph.intel.com Signed-off-by: Mike Marciniszyn Signed-off-by: H. Peter Anvin Cc: --- arch/x86/lib/usercopy_64.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c index 05928aa..906fea3 100644 --- a/arch/x86/lib/usercopy_64.c +++ b/arch/x86/lib/usercopy_64.c @@ -74,10 +74,10 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest) char c; unsigned zero_len; - for (; len; --len) { + for (; len; --len, to++) { if (__get_user_nocheck(c, from++, sizeof(char))) break; - if (__put_user_nocheck(c, to++, sizeof(char))) + if (__put_user_nocheck(c, to, sizeof(char))) break; } -- cgit v1.1 From 3325beed46d8d14d873e94d89ea57ee900dec942 Mon Sep 17 00:00:00 2001 From: Mark Tinguely Date: Sun, 24 Feb 2013 13:04:37 -0600 Subject: xfs: fix xfs_iomap_eof_prealloc_initial_size type Fix the return type of xfs_iomap_eof_prealloc_initial_size() to xfs_fsblock_t to reflect the fact that the return value may be an unsigned 64 bits if XFS_BIG_BLKNOS is defined. Signed-off-by: Mark Tinguely Reviewed-by: Dave Chinner Signed-off-by: Ben Myers (cherry picked from commit e8108cedb1c5d1dc359690d18ca997e97a0061d2) --- fs/xfs/xfs_iomap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index b0b0f44..5a30dd8 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -325,7 +325,7 @@ xfs_iomap_eof_want_preallocate( * rather than falling short due to things like stripe unit/width alignment of * real extents. */ -STATIC int +STATIC xfs_fsblock_t xfs_iomap_eof_prealloc_initial_size( struct xfs_mount *mp, struct xfs_inode *ip, -- cgit v1.1 From e001873853d87674dd5b3cfa2851885023616695 Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 12 Mar 2013 23:30:34 +1100 Subject: xfs: ensure we capture IO errors correctly Failed buffer readahead can leave the buffer in the cache marked with an error. Most callers that then issue a subsequent read on the buffer do not zero the b_error field out, and so we may incorectly detect an error during IO completion due to the stale error value left on the buffer. Avoid this problem by zeroing the error before IO submission. This ensures that the only IO errors that are detected those captured from are those captured from bio submission or completion. Signed-off-by: Dave Chinner Reviewed-by: Mark Tinguely Signed-off-by: Ben Myers (cherry picked from commit c163f9a1760229a95d04e37b332de7d5c1c225cd) --- fs/xfs/xfs_buf.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/fs/xfs/xfs_buf.c b/fs/xfs/xfs_buf.c index 4e8f0df..8459b5d 100644 --- a/fs/xfs/xfs_buf.c +++ b/fs/xfs/xfs_buf.c @@ -1334,6 +1334,12 @@ _xfs_buf_ioapply( int size; int i; + /* + * Make sure we capture only current IO errors rather than stale errors + * left over from previous use of the buffer (e.g. failed readahead). + */ + bp->b_error = 0; + if (bp->b_flags & XBF_WRITE) { if (bp->b_flags & XBF_SYNCIO) rw = WRITE_SYNC; -- cgit v1.1 From a517b608fa3d9b65930ef53ffe4a2f9800e10f7d Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 18 Mar 2013 10:49:07 -0400 Subject: nfsd: only unhash DRC entries that are in the hashtable It's not safe to call hlist_del() on a newly initialized hlist_node. That leads to a NULL pointer dereference. Only do that if the entry is hashed. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/nfsd/nfscache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 62c1ee1..18509bd 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -102,7 +102,8 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp) { if (rp->c_type == RC_REPLBUFF) kfree(rp->c_replvec.iov_base); - hlist_del(&rp->c_hash); + if (!hlist_unhashed(&rp->c_hash)) + hlist_del(&rp->c_hash); list_del(&rp->c_lru); --num_drc_entries; kmem_cache_free(drc_slab, rp); -- cgit v1.1 From 7f42ace3118afedbd1848a349d01a11d9ca13d41 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Thu, 14 Mar 2013 12:48:40 +0100 Subject: iwl3945: fix length of dma buffers commit bdb084b22d8aee66c87af5e9c36bd6cf7f3bccfd Author: Stanislaw Gruszka Date: Wed Feb 13 15:49:08 2013 +0100 iwlegacy: more checks for dma mapping errors broke il3945_tx_skb() dma buffer length settings, what results on firmware errors like showed below and make 3945 device non usable. iwl3945 0000:02:00.0: Microcode SW error detected. Restarting 0x82000008. iwl3945 0000:02:00.0: Loaded firmware version: 15.32.2.9 iwl3945 0000:02:00.0: Start IWL Error Log Dump: iwl3945 0000:02:00.0: Status: 0x000202E4, count: 1 iwl3945 0000:02:00.0: Desc Time asrtPC blink2 ilink1 nmiPC Line iwl3945 0000:02:00.0: SYSASSERT (0x5) 0000208934 0x008B6 0x0035E 0x00320 0x00000 267 iwl3945 0000:02:00.0: Error Reply type 0x00000001 cmd Reported-by: Zdenek Kabelac Reported-by: Krzysztof Kolasa Reported-by: Pedro Francisco Signed-off-by: Stanislaw Gruszka Signed-off-by: John W. Linville --- drivers/net/wireless/iwlegacy/3945-mac.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c index 3630a41..c353b5f 100644 --- a/drivers/net/wireless/iwlegacy/3945-mac.c +++ b/drivers/net/wireless/iwlegacy/3945-mac.c @@ -475,6 +475,7 @@ il3945_tx_skb(struct il_priv *il, dma_addr_t txcmd_phys; int txq_id = skb_get_queue_mapping(skb); u16 len, idx, hdr_len; + u16 firstlen, secondlen; u8 id; u8 unicast; u8 sta_id; @@ -589,21 +590,22 @@ il3945_tx_skb(struct il_priv *il, len = sizeof(struct il3945_tx_cmd) + sizeof(struct il_cmd_header) + hdr_len; - len = (len + 3) & ~3; + firstlen = (len + 3) & ~3; /* Physical address of this Tx command's header (not MAC header!), * within command buffer array. */ txcmd_phys = - pci_map_single(il->pci_dev, &out_cmd->hdr, len, PCI_DMA_TODEVICE); + pci_map_single(il->pci_dev, &out_cmd->hdr, firstlen, + PCI_DMA_TODEVICE); if (unlikely(pci_dma_mapping_error(il->pci_dev, txcmd_phys))) goto drop_unlock; /* Set up TFD's 2nd entry to point directly to remainder of skb, * if any (802.11 null frames have no payload). */ - len = skb->len - hdr_len; - if (len) { + secondlen = skb->len - hdr_len; + if (secondlen > 0) { phys_addr = - pci_map_single(il->pci_dev, skb->data + hdr_len, len, + pci_map_single(il->pci_dev, skb->data + hdr_len, secondlen, PCI_DMA_TODEVICE); if (unlikely(pci_dma_mapping_error(il->pci_dev, phys_addr))) goto drop_unlock; @@ -611,12 +613,12 @@ il3945_tx_skb(struct il_priv *il, /* Add buffer containing Tx command and MAC(!) header to TFD's * first entry */ - il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, len, 1, 0); + il->ops->txq_attach_buf_to_tfd(il, txq, txcmd_phys, firstlen, 1, 0); dma_unmap_addr_set(out_meta, mapping, txcmd_phys); - dma_unmap_len_set(out_meta, len, len); - if (len) - il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, len, 0, - U32_PAD(len)); + dma_unmap_len_set(out_meta, len, firstlen); + if (secondlen > 0) + il->ops->txq_attach_buf_to_tfd(il, txq, phys_addr, secondlen, 0, + U32_PAD(secondlen)); if (!ieee80211_has_morefrags(hdr->frame_control)) { txq->need_update = 1; -- cgit v1.1 From 74632d11a133b5baf6b9d622dd19d2f944d93d94 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 15 Mar 2013 14:53:31 +0100 Subject: ath9k_hw: revert chainmask to user configuration after calibration The commit 'ath9k_hw: fix calibration issues on chainmask that don't include chain 0' changed the hardware chainmask to the chip chainmask for the duration of the calibration, but the revert to user configuration in the reset path runs too early. That causes some issues with limiting the number of antennas (including spurious failure in hardware-generated packets). Fix this by reverting the chainmask after the essential parts of the calibration that need the workaround, and before NF calibration is run. Signed-off-by: Felix Fietkau Reported-by: Wojciech Dubowik Tested-by: Wojciech Dubowik Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_calib.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_calib.c b/drivers/net/wireless/ath/ath9k/ar9003_calib.c index 4cc1394..f76c3ca 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_calib.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_calib.c @@ -1023,6 +1023,7 @@ static bool ar9003_hw_init_cal(struct ath_hw *ah, AR_PHY_AGC_CONTROL_FLTR_CAL | AR_PHY_AGC_CONTROL_PKDET_CAL; + /* Use chip chainmask only for calibration */ ar9003_hw_set_chain_masks(ah, ah->caps.rx_chainmask, ah->caps.tx_chainmask); if (rtt) { @@ -1150,6 +1151,9 @@ skip_tx_iqcal: ar9003_hw_rtt_disable(ah); } + /* Revert chainmask to runtime parameters */ + ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask); + /* Initialize list pointers */ ah->cal_list = ah->cal_list_last = ah->cal_list_curr = NULL; -- cgit v1.1 From 01d4ab96d2e7fceaad204e5a8710ce34e229b8c5 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Fri, 15 Mar 2013 16:18:44 +0100 Subject: ath9k: limit tx path hang check to normal data queues The beacon and multicast-buffer queues are managed by the beacon tasklet, and the generic tx path hang check does not help in any way here. Running it on those queues anyway can introduce some race conditions leading to unnecessary chip resets. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/link.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c index ade3afb..39c84ec 100644 --- a/drivers/net/wireless/ath/ath9k/link.c +++ b/drivers/net/wireless/ath/ath9k/link.c @@ -28,21 +28,21 @@ void ath_tx_complete_poll_work(struct work_struct *work) int i; bool needreset = false; - for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) - if (ATH_TXQ_SETUP(sc, i)) { - txq = &sc->tx.txq[i]; - ath_txq_lock(sc, txq); - if (txq->axq_depth) { - if (txq->axq_tx_inprogress) { - needreset = true; - ath_txq_unlock(sc, txq); - break; - } else { - txq->axq_tx_inprogress = true; - } + for (i = 0; i < IEEE80211_NUM_ACS; i++) { + txq = sc->tx.txq_map[i]; + + ath_txq_lock(sc, txq); + if (txq->axq_depth) { + if (txq->axq_tx_inprogress) { + needreset = true; + ath_txq_unlock(sc, txq); + break; + } else { + txq->axq_tx_inprogress = true; } - ath_txq_unlock_complete(sc, txq); } + ath_txq_unlock_complete(sc, txq); + } if (needreset) { ath_dbg(ath9k_hw_common(sc->sc_ah), RESET, -- cgit v1.1 From 00d7ea11ff0783e24fe70778f3141270b561aaa1 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Fri, 15 Mar 2013 18:47:05 -0700 Subject: mwifiex: fix race when queuing commands Running the following script repeatedly on XO-4 with SD8787 produces command timeout and system lockup. insmod mwifiex_sdio.ko sleep 1 ifconfig eth0 up iwlist eth0 scan & sleep 0.5 rmmod mwifiex_sdio mwifiex_send_cmd_async() is called for sync as well as async commands. (mwifiex_send_cmd_sync() internally calls it for sync command.) "adapter->cmd_queued" gets filled inside mwifiex_send_cmd_async() routine for both types of commands. But it is used only for sync commands in mwifiex_wait_queue_complete(). This could lead to a race when two threads try to queue a sync command with another sync/async command simultaneously. Get rid of global variable and pass command node as a parameter to mwifiex_wait_queue_complete() to fix the problem. Cc: # 3.8 Reported-by: Daniel Drake Tested-by: Daniel Drake Tested-by: Marco Cesarano Signed-off-by: Amitkumar Karwar Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cmdevt.c | 5 ++--- drivers/net/wireless/mwifiex/main.h | 4 ++-- drivers/net/wireless/mwifiex/scan.c | 8 ++++---- drivers/net/wireless/mwifiex/sta_ioctl.c | 10 ++-------- 4 files changed, 10 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c index 20a6c55..2ffabdd 100644 --- a/drivers/net/wireless/mwifiex/cmdevt.c +++ b/drivers/net/wireless/mwifiex/cmdevt.c @@ -484,8 +484,6 @@ int mwifiex_send_cmd_sync(struct mwifiex_private *priv, uint16_t cmd_no, ret = mwifiex_send_cmd_async(priv, cmd_no, cmd_action, cmd_oid, data_buf); - if (!ret) - ret = mwifiex_wait_queue_complete(adapter); return ret; } @@ -588,9 +586,10 @@ int mwifiex_send_cmd_async(struct mwifiex_private *priv, uint16_t cmd_no, if (cmd_no == HostCmd_CMD_802_11_SCAN) { mwifiex_queue_scan_cmd(priv, cmd_node); } else { - adapter->cmd_queued = cmd_node; mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); queue_work(adapter->workqueue, &adapter->main_work); + if (cmd_node->wait_q_enabled) + ret = mwifiex_wait_queue_complete(adapter, cmd_node); } return ret; diff --git a/drivers/net/wireless/mwifiex/main.h b/drivers/net/wireless/mwifiex/main.h index 553adfb..7035ade 100644 --- a/drivers/net/wireless/mwifiex/main.h +++ b/drivers/net/wireless/mwifiex/main.h @@ -723,7 +723,6 @@ struct mwifiex_adapter { u16 cmd_wait_q_required; struct mwifiex_wait_queue cmd_wait_q; u8 scan_wait_q_woken; - struct cmd_ctrl_node *cmd_queued; spinlock_t queue_lock; /* lock for tx queues */ struct completion fw_load; u8 country_code[IEEE80211_COUNTRY_STRING_LEN]; @@ -1018,7 +1017,8 @@ int mwifiex_request_set_multicast_list(struct mwifiex_private *priv, struct mwifiex_multicast_list *mcast_list); int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist, struct net_device *dev); -int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter); +int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter, + struct cmd_ctrl_node *cmd_queued); int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss, struct cfg80211_ssid *req_ssid); int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type); diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c index bb60c27..d215b4d 100644 --- a/drivers/net/wireless/mwifiex/scan.c +++ b/drivers/net/wireless/mwifiex/scan.c @@ -1388,10 +1388,13 @@ int mwifiex_scan_networks(struct mwifiex_private *priv, list_del(&cmd_node->list); spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); - adapter->cmd_queued = cmd_node; mwifiex_insert_cmd_to_pending_q(adapter, cmd_node, true); queue_work(adapter->workqueue, &adapter->main_work); + + /* Perform internal scan synchronously */ + if (!priv->scan_request) + mwifiex_wait_queue_complete(adapter, cmd_node); } else { spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); @@ -1946,9 +1949,6 @@ int mwifiex_request_scan(struct mwifiex_private *priv, /* Normal scan */ ret = mwifiex_scan_networks(priv, NULL); - if (!ret) - ret = mwifiex_wait_queue_complete(priv->adapter); - up(&priv->async_sem); return ret; diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c index 9f33c92..13100f8 100644 --- a/drivers/net/wireless/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/mwifiex/sta_ioctl.c @@ -54,16 +54,10 @@ int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist, * This function waits on a cmd wait queue. It also cancels the pending * request after waking up, in case of errors. */ -int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter) +int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter, + struct cmd_ctrl_node *cmd_queued) { int status; - struct cmd_ctrl_node *cmd_queued; - - if (!adapter->cmd_queued) - return 0; - - cmd_queued = adapter->cmd_queued; - adapter->cmd_queued = NULL; dev_dbg(adapter->dev, "cmd pending\n"); atomic_inc(&adapter->cmd_pending); -- cgit v1.1 From a3e240cacc93a06bff3313e28938e980d01a2160 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Fri, 15 Mar 2013 18:47:06 -0700 Subject: mwifiex: skip pending commands after function shutdown During rmmod mwifiex_sdio processing FUNC_SHUTDOWN command is sent to firmware. Firmware expcets only FUNC_INIT once WLAN function is shut down. Any command pending in the command queue should be ignored and freed. Cc: # 3.8 Tested-by: Daniel Drake Tested-by: Marco Cesarano Signed-off-by: Bing Zhao Signed-off-by: Amitkumar Karwar Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cmdevt.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/mwifiex/cmdevt.c b/drivers/net/wireless/mwifiex/cmdevt.c index 2ffabdd..b5c8b96 100644 --- a/drivers/net/wireless/mwifiex/cmdevt.c +++ b/drivers/net/wireless/mwifiex/cmdevt.c @@ -157,6 +157,20 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv, return -1; } + cmd_code = le16_to_cpu(host_cmd->command); + cmd_size = le16_to_cpu(host_cmd->size); + + if (adapter->hw_status == MWIFIEX_HW_STATUS_RESET && + cmd_code != HostCmd_CMD_FUNC_SHUTDOWN && + cmd_code != HostCmd_CMD_FUNC_INIT) { + dev_err(adapter->dev, + "DNLD_CMD: FW in reset state, ignore cmd %#x\n", + cmd_code); + mwifiex_complete_cmd(adapter, cmd_node); + mwifiex_insert_cmd_to_free_q(adapter, cmd_node); + return -1; + } + /* Set command sequence number */ adapter->seq_num++; host_cmd->seq_num = cpu_to_le16(HostCmd_SET_SEQ_NO_BSS_INFO @@ -168,9 +182,6 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv, adapter->curr_cmd = cmd_node; spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags); - cmd_code = le16_to_cpu(host_cmd->command); - cmd_size = le16_to_cpu(host_cmd->size); - /* Adjust skb length */ if (cmd_node->cmd_skb->len > cmd_size) /* -- cgit v1.1 From 084c7189acb3f969c855536166042e27f5dd703f Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Fri, 15 Mar 2013 18:47:07 -0700 Subject: mwifiex: cancel cmd timer and free curr_cmd in shutdown process curr_cmd points to the command that is in processing or waiting for its command response from firmware. If the function shutdown happens to occur at this time we should cancel the cmd timer and put the command back to free queue. Cc: # 3.8 Tested-by: Marco Cesarano Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/init.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/mwifiex/init.c b/drivers/net/wireless/mwifiex/init.c index e38aa9b..0ff4c37 100644 --- a/drivers/net/wireless/mwifiex/init.c +++ b/drivers/net/wireless/mwifiex/init.c @@ -709,6 +709,14 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) return ret; } + /* cancel current command */ + if (adapter->curr_cmd) { + dev_warn(adapter->dev, "curr_cmd is still in processing\n"); + del_timer(&adapter->cmd_timer); + mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd); + adapter->curr_cmd = NULL; + } + /* shut down mwifiex */ dev_dbg(adapter->dev, "info: shutdown mwifiex...\n"); -- cgit v1.1 From 36ef0b473fbf43d5db23eea4616cc1d18cec245f Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Sun, 17 Mar 2013 11:54:04 +0200 Subject: rtlwifi: usb: add missing freeing of skbuff Signed-off-by: Jussi Kivilinna Acked-by: Larry Finger Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/usb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/rtlwifi/usb.c b/drivers/net/wireless/rtlwifi/usb.c index 156b527..5847d6d 100644 --- a/drivers/net/wireless/rtlwifi/usb.c +++ b/drivers/net/wireless/rtlwifi/usb.c @@ -851,6 +851,7 @@ static void _rtl_usb_transmit(struct ieee80211_hw *hw, struct sk_buff *skb, if (unlikely(!_urb)) { RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "Can't allocate urb. Drop skb!\n"); + kfree_skb(skb); return; } _rtl_submit_tx_urb(hw, _urb); -- cgit v1.1 From 882e3f8e6966109ad837cfe79e97cf3deb3ae19b Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Mon, 4 Mar 2013 14:08:06 +0100 Subject: target_core_sbc: use noop for SYNCHRONIZE_CACHE Windows does not expect SYNCHRONIZE_CACHE to be not supported, and will generate a BSOD upon shutdown when using rd_mcp backend. So better use a noop here. Signed-off-by: Hannes Reinecke Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_sbc.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/target/target_core_sbc.c b/drivers/target/target_core_sbc.c index 290230d..60d4b51 100644 --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -464,8 +464,11 @@ sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops) break; case SYNCHRONIZE_CACHE: case SYNCHRONIZE_CACHE_16: - if (!ops->execute_sync_cache) - return TCM_UNSUPPORTED_SCSI_OPCODE; + if (!ops->execute_sync_cache) { + size = 0; + cmd->execute_cmd = sbc_emulate_noop; + break; + } /* * Extract LBA and range to be flushed for emulated SYNCHRONIZE_CACHE -- cgit v1.1 From 7ac9ad11b2a5cf77a92b58ee6b672ad2fa155eb1 Mon Sep 17 00:00:00 2001 From: Andy Grover Date: Mon, 4 Mar 2013 13:52:09 -0800 Subject: target/iscsi: Fix mutual CHAP auth on big-endian arches See https://bugzilla.redhat.com/show_bug.cgi?id=916290 Used a temp var since we take its address in sg_init_one. Signed-off-by: Andy Grover Cc: Signed-off-by: Nicholas Bellinger --- drivers/target/iscsi/iscsi_target_auth.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/target/iscsi/iscsi_target_auth.c b/drivers/target/iscsi/iscsi_target_auth.c index db0cf7c..a0fc7b9 100644 --- a/drivers/target/iscsi/iscsi_target_auth.c +++ b/drivers/target/iscsi/iscsi_target_auth.c @@ -166,6 +166,7 @@ static int chap_server_compute_md5( { char *endptr; unsigned long id; + unsigned char id_as_uchar; unsigned char digest[MD5_SIGNATURE_SIZE]; unsigned char type, response[MD5_SIGNATURE_SIZE * 2 + 2]; unsigned char identifier[10], *challenge = NULL; @@ -355,7 +356,9 @@ static int chap_server_compute_md5( goto out; } - sg_init_one(&sg, &id, 1); + /* To handle both endiannesses */ + id_as_uchar = id; + sg_init_one(&sg, &id_as_uchar, 1); ret = crypto_hash_update(&desc, &sg, 1); if (ret < 0) { pr_err("crypto_hash_update() failed for id\n"); -- cgit v1.1 From 0fb889b83186e54c0cfa79516599f2267fb553fb Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 15 Mar 2013 17:19:26 +0800 Subject: target: fix possible memory leak in core_tpg_register() 'se_tpg->tpg_lun_list' is malloced in core_tpg_register() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. 'se_tpg' is malloced out of this function, and will be freed if we return error, so remove free for 'se_tpg'. Signed-off-by: Wei Yongjun Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tpg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 9169d6a..aac9d27 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -711,7 +711,8 @@ int core_tpg_register( if (se_tpg->se_tpg_type == TRANSPORT_TPG_TYPE_NORMAL) { if (core_tpg_setup_virtual_lun0(se_tpg) < 0) { - kfree(se_tpg); + array_free(se_tpg->tpg_lun_list, + TRANSPORT_MAX_LUNS_PER_TPG); return -ENOMEM; } } -- cgit v1.1 From 94877548ec95269db60b61ee56ccea4fb27bbf7c Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 18 Mar 2013 21:19:49 +0100 Subject: MAINTAINERS: Remove Mark M. Hoffman Mark M. Hoffman stopped working on the Linux kernel several years ago, so he should no longer be listed as a driver maintainer. I'm not even sure if his e-mail address still works. I can take over 3 drivers he was responsible for, the 4th one will fall down to the subsystem maintainer. Also give Mark credit for all the good work he did. Signed-off-by: Jean Delvare Cc: "Mark M. Hoffman" Acked-by: Guenter Roeck Cc: Wolfram Sang --- CREDITS | 8 ++++++++ MAINTAINERS | 17 ++--------------- 2 files changed, 10 insertions(+), 15 deletions(-) diff --git a/CREDITS b/CREDITS index 78163cb..afaa7ce 100644 --- a/CREDITS +++ b/CREDITS @@ -1510,6 +1510,14 @@ D: Natsemi ethernet D: Cobalt Networks (x86) support D: This-and-That +N: Mark M. Hoffman +E: mhoffman@lightlink.com +D: asb100, lm93 and smsc47b397 hardware monitoring drivers +D: hwmon subsystem core +D: hwmon subsystem maintainer +D: i2c-sis96x and i2c-stub SMBus drivers +S: USA + N: Dirk Hohndel E: hohndel@suse.de D: The XFree86[tm] Project diff --git a/MAINTAINERS b/MAINTAINERS index 50b4d73..fb89be1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1338,12 +1338,6 @@ S: Maintained F: drivers/platform/x86/asus*.c F: drivers/platform/x86/eeepc*.c -ASUS ASB100 HARDWARE MONITOR DRIVER -M: "Mark M. Hoffman" -L: lm-sensors@lm-sensors.org -S: Maintained -F: drivers/hwmon/asb100.c - ASYNCHRONOUS TRANSFERS/TRANSFORMS (IOAT) API M: Dan Williams W: http://sourceforge.net/projects/xscaleiop @@ -3851,7 +3845,7 @@ F: drivers/i2c/busses/i2c-ismt.c F: Documentation/i2c/busses/i2c-ismt I2C/SMBUS STUB DRIVER -M: "Mark M. Hoffman" +M: Jean Delvare L: linux-i2c@vger.kernel.org S: Maintained F: drivers/i2c/i2c-stub.c @@ -7198,13 +7192,6 @@ L: netdev@vger.kernel.org S: Maintained F: drivers/net/ethernet/sis/sis900.* -SIS 96X I2C/SMBUS DRIVER -M: "Mark M. Hoffman" -L: linux-i2c@vger.kernel.org -S: Maintained -F: Documentation/i2c/busses/i2c-sis96x -F: drivers/i2c/busses/i2c-sis96x.c - SIS FRAMEBUFFER DRIVER M: Thomas Winischhofer W: http://www.winischhofer.net/linuxsisvga.shtml @@ -7282,7 +7269,7 @@ F: Documentation/hwmon/sch5627 F: drivers/hwmon/sch5627.c SMSC47B397 HARDWARE MONITOR DRIVER -M: "Mark M. Hoffman" +M: Jean Delvare L: lm-sensors@lm-sensors.org S: Maintained F: Documentation/hwmon/smsc47b397 -- cgit v1.1 From 5a4c060114822255302d4763ad6712f9cde2372b Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 18 Mar 2013 21:19:49 +0100 Subject: hwmon: (lm75.h) Update header inclusion File lm75.h used to include for SENSORS_LIMIT() but this function is gone by now. Instead we call clamp_val() so we should include , where this function is declared. Signed-off-by: Jean Delvare Reviewed-by: Guenter Roeck --- drivers/hwmon/lm75.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/lm75.h b/drivers/hwmon/lm75.h index 668ff47..5cde94e 100644 --- a/drivers/hwmon/lm75.h +++ b/drivers/hwmon/lm75.h @@ -25,7 +25,7 @@ which contains this code, we don't worry about the wasted space. */ -#include +#include /* straight from the datasheet */ #define LM75_TEMP_MIN (-55000) -- cgit v1.1 From 25eba81b7fbbb14dde63fc85231c699fe77afc58 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Mon, 18 Mar 2013 21:19:49 +0100 Subject: hwmon: (lm75) Fix tcn75 prefix The TCN75 has its own prefix for a long time now. Signed-off-by: Jean Delvare Reviewed-by: Guenter Roeck --- Documentation/hwmon/lm75 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75 index c91a1d1..69af1c7 100644 --- a/Documentation/hwmon/lm75 +++ b/Documentation/hwmon/lm75 @@ -23,7 +23,7 @@ Supported chips: Datasheet: Publicly available at the Maxim website http://www.maxim-ic.com/ * Microchip (TelCom) TCN75 - Prefix: 'lm75' + Prefix: 'tcn75' Addresses scanned: none Datasheet: Publicly available at the Microchip website http://www.microchip.com/ -- cgit v1.1 From 0e5e098ac22dae38f957e951b70d3cf73beff0f7 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 11 Mar 2013 09:39:55 +0000 Subject: xen-blkback: fix dispatch_rw_block_io() error path Commit 7708992 ("xen/blkback: Seperate the bio allocation and the bio submission") consolidated the pendcnt updates to just a single write, neglecting the fact that the error path relied on it getting set to 1 up front (such that the decrement in __end_block_io_op() would actually drop the count to zero, triggering the necessary cleanup actions). Also remove a misleading and a stale (after said commit) comment. CC: stable@vger.kernel.org Signed-off-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index eaccc22..477a17c 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -1001,13 +1001,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif, bio->bi_end_io = end_block_io_op; } - /* - * We set it one so that the last submit_bio does not have to call - * atomic_inc. - */ atomic_set(&pending_req->pendcnt, nbio); - - /* Get a reference count for the disk queue and start sending I/O */ blk_start_plug(&plug); for (i = 0; i < nbio; i++) @@ -1035,6 +1029,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif, fail_put_bio: for (i = 0; i < nbio; i++) bio_put(biolist[i]); + atomic_set(&pending_req->pendcnt, 1); __end_block_io_op(pending_req, -EINVAL); msleep(1); /* back off a bit */ return -EIO; -- cgit v1.1 From 29d0b218c87ace1078e08bb32c2e72fc96fa3db3 Mon Sep 17 00:00:00 2001 From: Mihnea Dobrescu-Balaur Date: Mon, 11 Mar 2013 13:23:36 +0200 Subject: xen-blkfront: replace kmalloc and then memcpy with kmemdup The benefits are: * code is cleaner * kmemdup adds additional debugging info useful for tracking the real place where memory was allocated (CONFIG_DEBUG_SLAB). Signed-off-by: Mihnea Dobrescu-Balaur Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkfront.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index c3dae2e..9620644 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -1203,11 +1203,10 @@ static int blkif_recover(struct blkfront_info *info) int j; /* Stage 1: Make a safe copy of the shadow state. */ - copy = kmalloc(sizeof(info->shadow), + copy = kmemdup(info->shadow, sizeof(info->shadow), GFP_NOIO | __GFP_REPEAT | __GFP_HIGH); if (!copy) return -ENOMEM; - memcpy(copy, info->shadow, sizeof(info->shadow)); /* Stage 2: Set up free list. */ memset(&info->shadow, 0, sizeof(info->shadow)); -- cgit v1.1 From f445f11eb2cc265dd47da5b2e864df46cd6e5a82 Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Thu, 14 Mar 2013 17:13:46 -0700 Subject: KVM: allow host header to be included even for !CONFIG_KVM The new context tracking subsystem unconditionally includes kvm_host.h headers for the guest enter/exit macros. This causes a compile failure when KVM is not enabled. Fix by adding an IS_ENABLED(CONFIG_KVM) check to kvm_host so it can be included/compiled even when KVM is not enabled. Cc: Frederic Weisbecker Signed-off-by: Kevin Hilman Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index cad77fe..a942863 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1,6 +1,8 @@ #ifndef __KVM_HOST_H #define __KVM_HOST_H +#if IS_ENABLED(CONFIG_KVM) + /* * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. @@ -1055,5 +1057,8 @@ static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) } #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ +#else +static inline void __guest_enter(void) { return; } +static inline void __guest_exit(void) { return; } +#endif /* IS_ENABLED(CONFIG_KVM) */ #endif - -- cgit v1.1 From c09664bb44184b3846e8c5254db4eae4b932682a Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Mon, 18 Mar 2013 13:54:32 -0300 Subject: KVM: x86: fix deadlock in clock-in-progress request handling There is a deadlock in pvclock handling: cpu0: cpu1: kvm_gen_update_masterclock() kvm_guest_time_update() spin_lock(pvclock_gtod_sync_lock) local_irq_save(flags) spin_lock(pvclock_gtod_sync_lock) kvm_make_mclock_inprogress_request(kvm) make_all_cpus_request() smp_call_function_many() Now if smp_call_function_many() called by cpu0 tries to call function on cpu1 there will be a deadlock. Fix by moving pvclock_gtod_sync_lock protected section outside irq disabled section. Analyzed by Gleb Natapov Acked-by: Gleb Natapov Reported-and-Tested-by: Yongjie Ren Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/x86.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f71500a..f7c850b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1416,15 +1416,6 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) kernel_ns = 0; host_tsc = 0; - /* Keep irq disabled to prevent changes to the clock */ - local_irq_save(flags); - this_tsc_khz = __get_cpu_var(cpu_tsc_khz); - if (unlikely(this_tsc_khz == 0)) { - local_irq_restore(flags); - kvm_make_request(KVM_REQ_CLOCK_UPDATE, v); - return 1; - } - /* * If the host uses TSC clock, then passthrough TSC as stable * to the guest. @@ -1436,6 +1427,15 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) kernel_ns = ka->master_kernel_ns; } spin_unlock(&ka->pvclock_gtod_sync_lock); + + /* Keep irq disabled to prevent changes to the clock */ + local_irq_save(flags); + this_tsc_khz = __get_cpu_var(cpu_tsc_khz); + if (unlikely(this_tsc_khz == 0)) { + local_irq_restore(flags); + kvm_make_request(KVM_REQ_CLOCK_UPDATE, v); + return 1; + } if (!use_master_clock) { host_tsc = native_read_tsc(); kernel_ns = get_kernel_ns(); -- cgit v1.1 From ac534ff2d5508bdff1358a55d88053da729ff46b Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 15 Mar 2013 09:16:29 -0400 Subject: nfsd: fix startup order in nfsd_reply_cache_init If we end up doing "goto out_nomem" in this function, we'll call nfsd_reply_cache_shutdown. That will attempt to walk the LRU list and free entries, but that list may not be initialized yet if the server is starting up for the first time. It's also possible for the shrinker to kick in before we've initialized the LRU list. Rearrange the initialization so that the LRU list_head and cache size are initialized before doing any of the allocations that might fail. Signed-off-by: Jeff Layton Signed-off-by: J. Bruce Fields --- fs/nfsd/nfscache.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index 18509bd..ca05f6d 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -119,6 +119,10 @@ nfsd_reply_cache_free(struct svc_cacherep *rp) int nfsd_reply_cache_init(void) { + INIT_LIST_HEAD(&lru_head); + max_drc_entries = nfsd_cache_size_limit(); + num_drc_entries = 0; + register_shrinker(&nfsd_reply_cache_shrinker); drc_slab = kmem_cache_create("nfsd_drc", sizeof(struct svc_cacherep), 0, 0, NULL); @@ -129,10 +133,6 @@ int nfsd_reply_cache_init(void) if (!cache_hash) goto out_nomem; - INIT_LIST_HEAD(&lru_head); - max_drc_entries = nfsd_cache_size_limit(); - num_drc_entries = 0; - return 0; out_nomem: printk(KERN_ERR "nfsd: failed to allocate reply cache\n"); -- cgit v1.1 From 038e0af4a4fc4db9631aef39ab53e5d991b972ef Mon Sep 17 00:00:00 2001 From: Asias He Date: Fri, 15 Mar 2013 09:14:05 +0800 Subject: tcm_vhost: Add missed lock in vhost_scsi_clear_endpoint() tv_tpg->tv_tpg_vhost_count should be protected by tv_tpg->tv_tpg_mutex. Signed-off-by: Asias He Reviewed-by: Stefan Hajnoczi Reviewed-by: Paolo Bonzini Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 9951297..79d3aea 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -850,7 +850,7 @@ static int vhost_scsi_clear_endpoint( for (index = 0; index < vs->dev.nvqs; ++index) { if (!vhost_vq_access_ok(&vs->vqs[index])) { ret = -EFAULT; - goto err; + goto err_dev; } } for (i = 0; i < VHOST_SCSI_MAX_TARGET; i++) { @@ -860,10 +860,11 @@ static int vhost_scsi_clear_endpoint( if (!tv_tpg) continue; + mutex_lock(&tv_tpg->tv_tpg_mutex); tv_tport = tv_tpg->tport; if (!tv_tport) { ret = -ENODEV; - goto err; + goto err_tpg; } if (strcmp(tv_tport->tport_name, t->vhost_wwpn)) { @@ -872,16 +873,19 @@ static int vhost_scsi_clear_endpoint( tv_tport->tport_name, tv_tpg->tport_tpgt, t->vhost_wwpn, t->vhost_tpgt); ret = -EINVAL; - goto err; + goto err_tpg; } tv_tpg->tv_tpg_vhost_count--; vs->vs_tpg[target] = NULL; vs->vs_endpoint = false; + mutex_unlock(&tv_tpg->tv_tpg_mutex); } mutex_unlock(&vs->dev.mutex); return 0; -err: +err_tpg: + mutex_unlock(&tv_tpg->tv_tpg_mutex); +err_dev: mutex_unlock(&vs->dev.mutex); return ret; } -- cgit v1.1 From 72c77539fd56f5ba8dd538df9f3ce0e331fe601c Mon Sep 17 00:00:00 2001 From: Asias He Date: Fri, 15 Mar 2013 09:14:06 +0800 Subject: tcm_vhost: Flush vhost_work in vhost_scsi_flush() We also need to flush the vhost_works. It is the completion vhost_work currently. Signed-off-by: Asias He Reviewed-by: Stefan Hajnoczi Reviewed-by: Paolo Bonzini Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 79d3aea..43fb11e 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -941,6 +941,7 @@ static void vhost_scsi_flush(struct vhost_scsi *vs) for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) vhost_scsi_flush_vq(vs, i); + vhost_work_flush(&vs->dev, &vs->vs_completion_work); } static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features) -- cgit v1.1 From 27ca0391fb717eecb9b9ca29ad4b9e8d7a84aba5 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Sat, 9 Mar 2013 22:19:35 +0100 Subject: staging: zcache: fix typo "64_BIT" Signed-off-by: Paul Bolle Signed-off-by: Greg Kroah-Hartman --- drivers/staging/zcache/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig index 7358270..5c37145 100644 --- a/drivers/staging/zcache/Kconfig +++ b/drivers/staging/zcache/Kconfig @@ -15,7 +15,7 @@ config RAMSTER depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE=y depends on NET # must ensure struct page is 8-byte aligned - select HAVE_ALIGNED_STRUCT_PAGE if !64_BIT + select HAVE_ALIGNED_STRUCT_PAGE if !64BIT default n help RAMster allows RAM on other machines in a cluster to be utilized -- cgit v1.1 From e71918ea66121985f287c0c3d0efa9c4c35da7fa Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 14 Mar 2013 17:56:44 -0300 Subject: [media] ir: IR_RX51 only works on OMAP2 This driver can be enabled on OMAP1 at the moment, which breaks allyesconfig for that platform. Let's mark it OMAP2PLUS-only in Kconfig, since that is the only thing it builds on. Signed-off-by: Arnd Bergmann Acked-by: Timo Kokkonen Acked-by: Tony Lindgren Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig index 19f3563..5a79c33 100644 --- a/drivers/media/rc/Kconfig +++ b/drivers/media/rc/Kconfig @@ -291,7 +291,7 @@ config IR_TTUSBIR config IR_RX51 tristate "Nokia N900 IR transmitter diode" - depends on OMAP_DM_TIMER && LIRC && !ARCH_MULTIPLATFORM + depends on OMAP_DM_TIMER && ARCH_OMAP2PLUS && LIRC && !ARCH_MULTIPLATFORM ---help--- Say Y or M here if you want to enable support for the IR transmitter diode built in the Nokia N900 (RX51) device. -- cgit v1.1 From cf2e39429c245245db889fffdfbdf3f889a6cb22 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Sat, 9 Mar 2013 23:25:06 +0200 Subject: ipvs: fix sctp chunk length order Fix wrong but non-fatal access to chunk length. sch->length should be in network order, next chunk should be aligned to 4 bytes. Problem noticed in sparse output. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_proto_sctp.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c index ae8ec6f..cd1d729 100644 --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c @@ -906,7 +906,7 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp, sctp_chunkhdr_t _sctpch, *sch; unsigned char chunk_type; int event, next_state; - int ihl; + int ihl, cofs; #ifdef CONFIG_IP_VS_IPV6 ihl = cp->af == AF_INET ? ip_hdrlen(skb) : sizeof(struct ipv6hdr); @@ -914,8 +914,8 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp, ihl = ip_hdrlen(skb); #endif - sch = skb_header_pointer(skb, ihl + sizeof(sctp_sctphdr_t), - sizeof(_sctpch), &_sctpch); + cofs = ihl + sizeof(sctp_sctphdr_t); + sch = skb_header_pointer(skb, cofs, sizeof(_sctpch), &_sctpch); if (sch == NULL) return; @@ -933,10 +933,12 @@ set_sctp_state(struct ip_vs_proto_data *pd, struct ip_vs_conn *cp, */ if ((sch->type == SCTP_CID_COOKIE_ECHO) || (sch->type == SCTP_CID_COOKIE_ACK)) { - sch = skb_header_pointer(skb, (ihl + sizeof(sctp_sctphdr_t) + - sch->length), sizeof(_sctpch), &_sctpch); - if (sch) { - if (sch->type == SCTP_CID_ABORT) + int clen = ntohs(sch->length); + + if (clen >= sizeof(sctp_chunkhdr_t)) { + sch = skb_header_pointer(skb, cofs + ALIGN(clen, 4), + sizeof(_sctpch), &_sctpch); + if (sch && sch->type == SCTP_CID_ABORT) chunk_type = sch->type; } } -- cgit v1.1 From 9997d08806062cb7ba471ab12fa2742cfec2f413 Mon Sep 17 00:00:00 2001 From: Ben Collins Date: Mon, 18 Mar 2013 19:19:07 -0400 Subject: sgy-cts1000: Remove __dev* attributes Somehow the driver snuck in with these still in it. Signed-off-by: Ben Collins Signed-off-by: Linus Torvalds --- arch/powerpc/platforms/85xx/sgy_cts1000.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/platforms/85xx/sgy_cts1000.c b/arch/powerpc/platforms/85xx/sgy_cts1000.c index 611e92f..7179726 100644 --- a/arch/powerpc/platforms/85xx/sgy_cts1000.c +++ b/arch/powerpc/platforms/85xx/sgy_cts1000.c @@ -69,7 +69,7 @@ static irqreturn_t gpio_halt_irq(int irq, void *__data) return IRQ_HANDLED; }; -static int __devinit gpio_halt_probe(struct platform_device *pdev) +static int gpio_halt_probe(struct platform_device *pdev) { enum of_gpio_flags flags; struct device_node *node = pdev->dev.of_node; @@ -128,7 +128,7 @@ static int __devinit gpio_halt_probe(struct platform_device *pdev) return 0; } -static int __devexit gpio_halt_remove(struct platform_device *pdev) +static int gpio_halt_remove(struct platform_device *pdev) { if (halt_node) { int gpio = of_get_gpio(halt_node, 0); @@ -165,7 +165,7 @@ static struct platform_driver gpio_halt_driver = { .of_match_table = gpio_halt_match, }, .probe = gpio_halt_probe, - .remove = __devexit_p(gpio_halt_remove), + .remove = gpio_halt_remove, }; module_platform_driver(gpio_halt_driver); -- cgit v1.1 From 6a15075eced2d780fa6c5d83682410f47f2e800b Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Mon, 18 Mar 2013 19:24:02 +0100 Subject: ARM: video: mxs: Fix mxsfb misconfiguring VDCTRL0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The issue fixed by this patch manifests only then using X11 with mxsfb driver. The X11 will display either shifted image or otherwise distorted image on the LCD. The problem is that the X11 tries to reconfigure the framebuffer and along the way calls fb_ops.fb_set_par() with X11's desired configuration values. The field of particular interest is fb_info->var.sync which contains non-standard values if configured by kernel. These are either FB_SYNC_DATA_ENABLE_HIGH_ACT, FB_SYNC_DOTCLK_FAILING_ACT or both, depending on the platform configuration. Both of these values are defined in the include/linux/mxsfb.h file. The driver interprets these values and configures the LCD controller accordingly. Yet X11 only has access to the standard values for this field defined in include/uapi/linux/fb.h and thus, unlike kernel, omits these special values. This results in distorted image on the LCD. This patch moves these non-standard values into new field of the mxsfb_platform_data structure so the driver can in turn check this field instead of the video mode field for these specific portions. Moreover, this patch prefixes these values with MXSFB_SYNC_ prefix instead of FB_SYNC_ prefix to prevent confusion of subsequent users. Signed-off-by: Marek Vasut Cc: Fabio Estevam Cc: Linux ARM Cc: Linux FBDEV Cc: Lothar Waßmann Cc: Sascha Hauer Tested-by: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/mach-mxs/mach-mxs.c | 24 ++++++++++++------------ drivers/video/mxsfb.c | 7 +++++-- include/linux/mxsfb.h | 7 +++++-- 3 files changed, 22 insertions(+), 16 deletions(-) diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c index 3218f1f..e7b781d 100644 --- a/arch/arm/mach-mxs/mach-mxs.c +++ b/arch/arm/mach-mxs/mach-mxs.c @@ -41,8 +41,6 @@ static struct fb_videomode mx23evk_video_modes[] = { .lower_margin = 4, .hsync_len = 1, .vsync_len = 1, - .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT | - FB_SYNC_DOTCLK_FAILING_ACT, }, }; @@ -59,8 +57,6 @@ static struct fb_videomode mx28evk_video_modes[] = { .lower_margin = 10, .hsync_len = 10, .vsync_len = 10, - .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT | - FB_SYNC_DOTCLK_FAILING_ACT, }, }; @@ -77,7 +73,6 @@ static struct fb_videomode m28evk_video_modes[] = { .lower_margin = 45, .hsync_len = 1, .vsync_len = 1, - .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT, }, }; @@ -94,9 +89,7 @@ static struct fb_videomode apx4devkit_video_modes[] = { .lower_margin = 13, .hsync_len = 48, .vsync_len = 3, - .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT | - FB_SYNC_DATA_ENABLE_HIGH_ACT | - FB_SYNC_DOTCLK_FAILING_ACT, + .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, }, }; @@ -113,9 +106,7 @@ static struct fb_videomode apf28dev_video_modes[] = { .lower_margin = 0x15, .hsync_len = 64, .vsync_len = 4, - .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT | - FB_SYNC_DATA_ENABLE_HIGH_ACT | - FB_SYNC_DOTCLK_FAILING_ACT, + .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT, }, }; @@ -132,7 +123,6 @@ static struct fb_videomode cfa10049_video_modes[] = { .lower_margin = 2, .hsync_len = 15, .vsync_len = 15, - .sync = FB_SYNC_DATA_ENABLE_HIGH_ACT }, }; @@ -259,6 +249,8 @@ static void __init imx23_evk_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(mx23evk_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT | + MXSFB_SYNC_DOTCLK_FAILING_ACT; } static inline void enable_clk_enet_out(void) @@ -278,6 +270,8 @@ static void __init imx28_evk_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(mx28evk_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT | + MXSFB_SYNC_DOTCLK_FAILING_ACT; mxs_saif_clkmux_select(MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0); } @@ -297,6 +291,7 @@ static void __init m28evk_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(m28evk_video_modes); mxsfb_pdata.default_bpp = 16; mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT; } static void __init sc_sps1_init(void) @@ -322,6 +317,8 @@ static void __init apx4devkit_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(apx4devkit_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_24BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT | + MXSFB_SYNC_DOTCLK_FAILING_ACT; } #define ENET0_MDC__GPIO_4_0 MXS_GPIO_NR(4, 0) @@ -407,6 +404,7 @@ static void __init cfa10049_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(cfa10049_video_modes); mxsfb_pdata.default_bpp = 32; mxsfb_pdata.ld_intf_width = STMLCDIF_18BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT; } static void __init cfa10037_init(void) @@ -423,6 +421,8 @@ static void __init apf28_init(void) mxsfb_pdata.mode_count = ARRAY_SIZE(apf28dev_video_modes); mxsfb_pdata.default_bpp = 16; mxsfb_pdata.ld_intf_width = STMLCDIF_16BIT; + mxsfb_pdata.sync = MXSFB_SYNC_DATA_ENABLE_HIGH_ACT | + MXSFB_SYNC_DOTCLK_FAILING_ACT; } static void __init mxs_machine_init(void) diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index 755556c..45169cb 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -169,6 +169,7 @@ struct mxsfb_info { unsigned dotclk_delay; const struct mxsfb_devdata *devdata; int mapped; + u32 sync; }; #define mxsfb_is_v3(host) (host->devdata->ipversion == 3) @@ -456,9 +457,9 @@ static int mxsfb_set_par(struct fb_info *fb_info) vdctrl0 |= VDCTRL0_HSYNC_ACT_HIGH; if (fb_info->var.sync & FB_SYNC_VERT_HIGH_ACT) vdctrl0 |= VDCTRL0_VSYNC_ACT_HIGH; - if (fb_info->var.sync & FB_SYNC_DATA_ENABLE_HIGH_ACT) + if (host->sync & MXSFB_SYNC_DATA_ENABLE_HIGH_ACT) vdctrl0 |= VDCTRL0_ENABLE_ACT_HIGH; - if (fb_info->var.sync & FB_SYNC_DOTCLK_FAILING_ACT) + if (host->sync & MXSFB_SYNC_DOTCLK_FAILING_ACT) vdctrl0 |= VDCTRL0_DOTCLK_ACT_FAILING; writel(vdctrl0, host->base + LCDC_VDCTRL0); @@ -861,6 +862,8 @@ static int mxsfb_probe(struct platform_device *pdev) INIT_LIST_HEAD(&fb_info->modelist); + host->sync = pdata->sync; + ret = mxsfb_init_fbinfo(host); if (ret != 0) goto error_init_fb; diff --git a/include/linux/mxsfb.h b/include/linux/mxsfb.h index f14943d..f80af86 100644 --- a/include/linux/mxsfb.h +++ b/include/linux/mxsfb.h @@ -24,8 +24,8 @@ #define STMLCDIF_18BIT 2 /** pixel data bus to the display is of 18 bit width */ #define STMLCDIF_24BIT 3 /** pixel data bus to the display is of 24 bit width */ -#define FB_SYNC_DATA_ENABLE_HIGH_ACT (1 << 6) -#define FB_SYNC_DOTCLK_FAILING_ACT (1 << 7) /* failing/negtive edge sampling */ +#define MXSFB_SYNC_DATA_ENABLE_HIGH_ACT (1 << 6) +#define MXSFB_SYNC_DOTCLK_FAILING_ACT (1 << 7) /* failing/negtive edge sampling */ struct mxsfb_platform_data { struct fb_videomode *mode_list; @@ -44,6 +44,9 @@ struct mxsfb_platform_data { * allocated. If specified,fb_size must also be specified. * fb_phys must be unused by Linux. */ + u32 sync; /* sync mask, contains MXSFB specifics not + * carried in fb_info->var.sync + */ }; #endif /* __LINUX_MXSFB_H */ -- cgit v1.1 From 4fa133954e91b83cfa22947579154c6f16e1b2b4 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 19 Mar 2013 09:57:57 +1000 Subject: drm/nouveau/core: fix return value of nouveau_object_del() Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/core/core/object.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/core/object.c b/drivers/gpu/drm/nouveau/core/core/object.c index 0daab62..3b2e7b63 100644 --- a/drivers/gpu/drm/nouveau/core/core/object.c +++ b/drivers/gpu/drm/nouveau/core/core/object.c @@ -278,7 +278,6 @@ nouveau_object_del(struct nouveau_object *client, u32 _parent, u32 _handle) struct nouveau_object *parent = NULL; struct nouveau_object *namedb = NULL; struct nouveau_handle *handle = NULL; - int ret = -EINVAL; parent = nouveau_handle_ref(client, _parent); if (!parent) @@ -295,7 +294,7 @@ nouveau_object_del(struct nouveau_object *client, u32 _parent, u32 _handle) } nouveau_object_ref(NULL, &parent); - return ret; + return handle ? 0 : -EINVAL; } int -- cgit v1.1 From f60b6e7a6078ceae438a95b808be04cd98f9909a Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 19 Mar 2013 15:20:00 +1000 Subject: drm/nv50/kms: prevent lockdep false-positive in page flipping path Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 2db5799..7f0e6c3 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -524,6 +524,8 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, swap_interval <<= 4; if (swap_interval == 0) swap_interval |= 0x100; + if (chan == NULL) + evo_sync(crtc->dev); push = evo_wait(sync, 128); if (unlikely(push == NULL)) @@ -586,8 +588,6 @@ nv50_display_flip_next(struct drm_crtc *crtc, struct drm_framebuffer *fb, sync->addr ^= 0x10; sync->data++; FIRE_RING (chan); - } else { - evo_sync(crtc->dev); } /* queue the flip */ -- cgit v1.1 From 287939a3690c8da6fd3310d7593ff0448cb9447c Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 13 Mar 2013 10:52:49 +0800 Subject: ARM: imx: add dependency check for DEBUG_IMX_UART_PORT While adding i.MX DEBUG_LL selection, commit f8c95fe (ARM: imx: support DEBUG_LL uart port selection for all i.MX SoCs) leaves Kconfig symbol DEBUG_IMX_UART_PORT there without any dependency check. This results in that everyone gets the symbol in their config, which is someting undesirable. Add "depends on ARCH_MXC" for the symbol to prevent that. Reported-by: Karl Beldan Signed-off-by: Shawn Guo --- arch/arm/Kconfig.debug | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index ecfcdba..9b31f43 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -495,6 +495,7 @@ config DEBUG_IMX_UART_PORT DEBUG_IMX53_UART || \ DEBUG_IMX6Q_UART default 1 + depends on ARCH_MXC help Choose UART port on which kernel low-level debug messages should be output. -- cgit v1.1 From 2105fd550ca7dbdd490934f487852c2a399b20cf Mon Sep 17 00:00:00 2001 From: Pierrick Hascoet Date: Mon, 18 Mar 2013 17:04:45 +0100 Subject: arc: fix dma_address assignment during dma_map_sg() Signed-off-by: Pierrick Hascoet Signed-off-by: Vineet Gupta --- arch/arc/include/asm/dma-mapping.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arc/include/asm/dma-mapping.h b/arch/arc/include/asm/dma-mapping.h index 31f77ae..45b8e0c 100644 --- a/arch/arc/include/asm/dma-mapping.h +++ b/arch/arc/include/asm/dma-mapping.h @@ -126,7 +126,7 @@ dma_map_sg(struct device *dev, struct scatterlist *sg, int i; for_each_sg(sg, s, nents, i) - sg->dma_address = dma_map_page(dev, sg_page(s), s->offset, + s->dma_address = dma_map_page(dev, sg_page(s), s->offset, s->length, dir); return nents; -- cgit v1.1 From 0c12582fbcdea0cbb0dfd224e1c5f9a8428ffa18 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Sat, 9 Mar 2013 23:25:04 +0200 Subject: ipvs: add backup_only flag to avoid loops Dmitry Akindinov is reporting for a problem where SYNs are looping between the master and backup server when the backup server is used as real server in DR mode and has IPVS rules to function as director. Even when the backup function is enabled we continue to forward traffic and schedule new connections when the current master is using the backup server as real server. While this is not a problem for NAT, for DR and TUN method the backup server can not determine if a request comes from client or from director. To avoid such loops add new sysctl flag backup_only. It can be needed for DR/TUN setups that do not need backup and director function at the same time. When the backup function is enabled we stop any forwarding and pass the traffic to the local stack (real server mode). The flag disables the director function when the backup function is enabled. For setups that enable backup function for some virtual services and director function for other virtual services there should be another more complex solution to support DR/TUN mode, may be to assign per-virtual service syncid value, so that we can differentiate the requests. Reported-by: Dmitry Akindinov Tested-by: German Myzovsky Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- Documentation/networking/ipvs-sysctl.txt | 7 +++++++ include/net/ip_vs.h | 12 ++++++++++++ net/netfilter/ipvs/ip_vs_core.c | 12 ++++++++---- net/netfilter/ipvs/ip_vs_ctl.c | 7 +++++++ 4 files changed, 34 insertions(+), 4 deletions(-) diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt index f2a2488..9573d0c 100644 --- a/Documentation/networking/ipvs-sysctl.txt +++ b/Documentation/networking/ipvs-sysctl.txt @@ -15,6 +15,13 @@ amemthresh - INTEGER enabled and the variable is automatically set to 2, otherwise the strategy is disabled and the variable is set to 1. +backup_only - BOOLEAN + 0 - disabled (default) + not 0 - enabled + + If set, disable the director function while the server is + in backup mode to avoid packet loops for DR/TUN methods. + conntrack - BOOLEAN 0 - disabled (default) not 0 - enabled diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 68c69d5..fce8e6b 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -976,6 +976,7 @@ struct netns_ipvs { int sysctl_sync_retries; int sysctl_nat_icmp_send; int sysctl_pmtu_disc; + int sysctl_backup_only; /* ip_vs_lblc */ int sysctl_lblc_expiration; @@ -1067,6 +1068,12 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) return ipvs->sysctl_pmtu_disc; } +static inline int sysctl_backup_only(struct netns_ipvs *ipvs) +{ + return ipvs->sync_state & IP_VS_STATE_BACKUP && + ipvs->sysctl_backup_only; +} + #else static inline int sysctl_sync_threshold(struct netns_ipvs *ipvs) @@ -1114,6 +1121,11 @@ static inline int sysctl_pmtu_disc(struct netns_ipvs *ipvs) return 1; } +static inline int sysctl_backup_only(struct netns_ipvs *ipvs) +{ + return 0; +} + #endif /* diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 47edf5a..18b4bc5 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1577,7 +1577,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af) } /* ipvs enabled in this netns ? */ net = skb_net(skb); - if (!net_ipvs(net)->enable) + ipvs = net_ipvs(net); + if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable)) return NF_ACCEPT; ip_vs_fill_iph_skb(af, skb, &iph); @@ -1654,7 +1655,6 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af) } IP_VS_DBG_PKT(11, af, pp, skb, 0, "Incoming packet"); - ipvs = net_ipvs(net); /* Check the server status */ if (cp->dest && !(cp->dest->flags & IP_VS_DEST_F_AVAILABLE)) { /* the destination server is not available */ @@ -1815,13 +1815,15 @@ ip_vs_forward_icmp(unsigned int hooknum, struct sk_buff *skb, { int r; struct net *net; + struct netns_ipvs *ipvs; if (ip_hdr(skb)->protocol != IPPROTO_ICMP) return NF_ACCEPT; /* ipvs enabled in this netns ? */ net = skb_net(skb); - if (!net_ipvs(net)->enable) + ipvs = net_ipvs(net); + if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable)) return NF_ACCEPT; return ip_vs_in_icmp(skb, &r, hooknum); @@ -1835,6 +1837,7 @@ ip_vs_forward_icmp_v6(unsigned int hooknum, struct sk_buff *skb, { int r; struct net *net; + struct netns_ipvs *ipvs; struct ip_vs_iphdr iphdr; ip_vs_fill_iph_skb(AF_INET6, skb, &iphdr); @@ -1843,7 +1846,8 @@ ip_vs_forward_icmp_v6(unsigned int hooknum, struct sk_buff *skb, /* ipvs enabled in this netns ? */ net = skb_net(skb); - if (!net_ipvs(net)->enable) + ipvs = net_ipvs(net); + if (unlikely(sysctl_backup_only(ipvs) || !ipvs->enable)) return NF_ACCEPT; return ip_vs_in_icmp_v6(skb, &r, hooknum, &iphdr); diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index c68198b..9e2d1cc 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -1808,6 +1808,12 @@ static struct ctl_table vs_vars[] = { .mode = 0644, .proc_handler = proc_dointvec, }, + { + .procname = "backup_only", + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, #ifdef CONFIG_IP_VS_DEBUG { .procname = "debug_level", @@ -3741,6 +3747,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net) tbl[idx++].data = &ipvs->sysctl_nat_icmp_send; ipvs->sysctl_pmtu_disc = 1; tbl[idx++].data = &ipvs->sysctl_pmtu_disc; + tbl[idx++].data = &ipvs->sysctl_backup_only; ipvs->sysctl_hdr = register_net_sysctl(net, "net/ipv4/vs", tbl); -- cgit v1.1 From bf93ad72cd8cfabe66a7b3d66236a1266d357189 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Sat, 9 Mar 2013 23:25:05 +0200 Subject: ipvs: remove extra rcu lock In 3.7 we added code that uses ipv4_update_pmtu but after commit c5ae7d4192 (ipv4: must use rcu protection while calling fib_lookup) the RCU lock is not needed. Signed-off-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_core.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 18b4bc5..61f49d2 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1394,10 +1394,8 @@ ip_vs_in_icmp(struct sk_buff *skb, int *related, unsigned int hooknum) skb_reset_network_header(skb); IP_VS_DBG(12, "ICMP for IPIP %pI4->%pI4: mtu=%u\n", &ip_hdr(skb)->saddr, &ip_hdr(skb)->daddr, mtu); - rcu_read_lock(); ipv4_update_pmtu(skb, dev_net(skb->dev), mtu, 0, 0, 0, 0); - rcu_read_unlock(); /* Client uses PMTUD? */ if (!(cih->frag_off & htons(IP_DF))) goto ignore_ipip; -- cgit v1.1 From 217fd5e709f029c125a9d39de5f13387407f131a Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Mon, 18 Mar 2013 17:49:33 +0100 Subject: xen-blkback: fix foreach_grant_safe to handle empty lists MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We may use foreach_grant_safe in the future with empty lists, so make sure we can handle them. Signed-off-by: Roger Pau Monné Cc: xen-devel@lists.xen.org Cc: Konrad Rzeszutek Wilk Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 477a17c..2cf8381 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -164,7 +164,7 @@ static void make_response(struct xen_blkif *blkif, u64 id, #define foreach_grant_safe(pos, n, rbtree, node) \ for ((pos) = container_of(rb_first((rbtree)), typeof(*(pos)), node), \ - (n) = rb_next(&(pos)->node); \ + (n) = (&(pos)->node != NULL) ? rb_next(&(pos)->node) : NULL; \ &(pos)->node != NULL; \ (pos) = container_of(n, typeof(*(pos)), node), \ (n) = (&(pos)->node != NULL) ? rb_next(&(pos)->node) : NULL) -- cgit v1.1 From 82f77cf9704cd06c452019421e5aada3a0648c76 Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Mon, 18 Mar 2013 20:04:42 +0000 Subject: qeth: delay feature trace Delay tracing of the card features until the optional commands have been enabled. Signed-off-by: Stefan Raspl Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_l3_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 091ca0efa..4eb7ea3 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3348,7 +3348,6 @@ static int __qeth_l3_set_online(struct ccwgroup_device *gdev, int recovery_mode) rc = -ENODEV; goto out_remove; } - qeth_trace_features(card); if (!card->dev && qeth_l3_setup_netdev(card)) { rc = -ENODEV; @@ -3425,6 +3424,7 @@ contin: qeth_l3_set_multicast_list(card->dev); rtnl_unlock(); } + qeth_trace_features(card); /* let user_space know that device is online */ kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE); mutex_unlock(&card->conf_mutex); -- cgit v1.1 From 82e2e782a3e486e3bfcc6130f0ebc28453af9955 Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Mon, 18 Mar 2013 20:04:43 +0000 Subject: qeth: Fix invalid router settings handling Give a bad return code when specifying a router setting that is either invalid or not support on the respective device type. In addition, fall back the previous setting instead of silently switching back to 'no routing'. Signed-off-by: Stefan Raspl Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_l3_main.c | 17 +++++++++++------ drivers/s390/net/qeth_l3_sys.c | 2 ++ 2 files changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 4eb7ea3..b6da6ce 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -623,7 +623,7 @@ static int qeth_l3_send_setrouting(struct qeth_card *card, return rc; } -static void qeth_l3_correct_routing_type(struct qeth_card *card, +static int qeth_l3_correct_routing_type(struct qeth_card *card, enum qeth_routing_types *type, enum qeth_prot_versions prot) { if (card->info.type == QETH_CARD_TYPE_IQD) { @@ -632,7 +632,7 @@ static void qeth_l3_correct_routing_type(struct qeth_card *card, case PRIMARY_CONNECTOR: case SECONDARY_CONNECTOR: case MULTICAST_ROUTER: - return; + return 0; default: goto out_inval; } @@ -641,17 +641,18 @@ static void qeth_l3_correct_routing_type(struct qeth_card *card, case NO_ROUTER: case PRIMARY_ROUTER: case SECONDARY_ROUTER: - return; + return 0; case MULTICAST_ROUTER: if (qeth_is_ipafunc_supported(card, prot, IPA_OSA_MC_ROUTER)) - return; + return 0; default: goto out_inval; } } out_inval: *type = NO_ROUTER; + return -EINVAL; } int qeth_l3_setrouting_v4(struct qeth_card *card) @@ -660,8 +661,10 @@ int qeth_l3_setrouting_v4(struct qeth_card *card) QETH_CARD_TEXT(card, 3, "setrtg4"); - qeth_l3_correct_routing_type(card, &card->options.route4.type, + rc = qeth_l3_correct_routing_type(card, &card->options.route4.type, QETH_PROT_IPV4); + if (rc) + return rc; rc = qeth_l3_send_setrouting(card, card->options.route4.type, QETH_PROT_IPV4); @@ -683,8 +686,10 @@ int qeth_l3_setrouting_v6(struct qeth_card *card) if (!qeth_is_supported(card, IPA_IPV6)) return 0; - qeth_l3_correct_routing_type(card, &card->options.route6.type, + rc = qeth_l3_correct_routing_type(card, &card->options.route6.type, QETH_PROT_IPV6); + if (rc) + return rc; rc = qeth_l3_send_setrouting(card, card->options.route6.type, QETH_PROT_IPV6); diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c index ebc3794..e70af24 100644 --- a/drivers/s390/net/qeth_l3_sys.c +++ b/drivers/s390/net/qeth_l3_sys.c @@ -87,6 +87,8 @@ static ssize_t qeth_l3_dev_route_store(struct qeth_card *card, rc = qeth_l3_setrouting_v6(card); } out: + if (rc) + route->type = old_route_type; mutex_unlock(&card->conf_mutex); return rc ? rc : count; } -- cgit v1.1 From 271648b4c610eed540daaf9ff366209825757565 Mon Sep 17 00:00:00 2001 From: Frank Blaschka Date: Mon, 18 Mar 2013 20:04:44 +0000 Subject: qeth: Fix scatter-gather regression This patch fixes a scatter-gather regression introduced with commit 5640f768 net: use a per task frag allocator Now the qeth driver can cope with bigger framents and split a fragment in sub framents if required. Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core.h | 1 + drivers/s390/net/qeth_core_main.c | 45 +++++++++++++++++++++++++++++++++------ drivers/s390/net/qeth_l3_main.c | 4 +++- 3 files changed, 42 insertions(+), 8 deletions(-) diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index d87961d..8c06223 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -916,6 +916,7 @@ int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *, void *reply_param); int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int); int qeth_get_elements_no(struct qeth_card *, void *, struct sk_buff *, int); +int qeth_get_elements_for_frags(struct sk_buff *); int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *, struct sk_buff *, struct qeth_hdr *, int, int, int); int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *, diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 0d8cdff..0d73a99 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -3679,6 +3679,25 @@ int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, } EXPORT_SYMBOL_GPL(qeth_get_priority_queue); +int qeth_get_elements_for_frags(struct sk_buff *skb) +{ + int cnt, length, e, elements = 0; + struct skb_frag_struct *frag; + char *data; + + for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { + frag = &skb_shinfo(skb)->frags[cnt]; + data = (char *)page_to_phys(skb_frag_page(frag)) + + frag->page_offset; + length = frag->size; + e = PFN_UP((unsigned long)data + length - 1) - + PFN_DOWN((unsigned long)data); + elements += e; + } + return elements; +} +EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags); + int qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb, int elems) { @@ -3686,7 +3705,8 @@ int qeth_get_elements_no(struct qeth_card *card, void *hdr, int elements_needed = PFN_UP((unsigned long)skb->data + dlen - 1) - PFN_DOWN((unsigned long)skb->data); - elements_needed += skb_shinfo(skb)->nr_frags; + elements_needed += qeth_get_elements_for_frags(skb); + if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { QETH_DBF_MESSAGE(2, "Invalid size of IP packet " "(Number=%d / Length=%d). Discarded.\n", @@ -3771,12 +3791,23 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb, for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) { frag = &skb_shinfo(skb)->frags[cnt]; - buffer->element[element].addr = (char *) - page_to_phys(skb_frag_page(frag)) - + frag->page_offset; - buffer->element[element].length = frag->size; - buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG; - element++; + data = (char *)page_to_phys(skb_frag_page(frag)) + + frag->page_offset; + length = frag->size; + while (length > 0) { + length_here = PAGE_SIZE - + ((unsigned long) data % PAGE_SIZE); + if (length < length_here) + length_here = length; + + buffer->element[element].addr = data; + buffer->element[element].length = length_here; + buffer->element[element].eflags = + SBAL_EFLAGS_MIDDLE_FRAG; + length -= length_here; + data += length_here; + element++; + } } if (buffer->element[element - 1].eflags) diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index b6da6ce..8710337 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2903,7 +2903,9 @@ static inline int qeth_l3_tso_elements(struct sk_buff *skb) tcp_hdr(skb)->doff * 4; int tcpd_len = skb->len - (tcpd - (unsigned long)skb->data); int elements = PFN_UP(tcpd + tcpd_len - 1) - PFN_DOWN(tcpd); - elements += skb_shinfo(skb)->nr_frags; + + elements += qeth_get_elements_for_frags(skb); + return elements; } -- cgit v1.1 From 155b7edb51430a280f86c1e21b7be308b0d219d4 Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Mon, 18 Mar 2013 17:49:34 +0100 Subject: xen-blkfront: switch from llist to list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The git commit f84adf4921ae3115502f44ff467b04bf2f88cf04 (xen-blkfront: drop the use of llist_for_each_entry_safe) was a stop-gate to fix a GCC4.1 bug. The appropiate way is to actually use an list instead of using an llist. As such this patch replaces the usage of llist with an list. Since we always manipulate the list while holding the io_lock, there's no need for additional locking (llist used previously is safe to use concurrently without additional locking). Signed-off-by: Roger Pau Monné CC: stable@vger.kernel.org [v1: Redid the git commit description] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkfront.c | 41 ++++++++++++++++++----------------------- 1 file changed, 18 insertions(+), 23 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 9620644..97324cd1 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -44,7 +44,7 @@ #include #include #include -#include +#include #include #include @@ -68,7 +68,7 @@ enum blkif_state { struct grant { grant_ref_t gref; unsigned long pfn; - struct llist_node node; + struct list_head node; }; struct blk_shadow { @@ -105,7 +105,7 @@ struct blkfront_info struct work_struct work; struct gnttab_free_callback callback; struct blk_shadow shadow[BLK_RING_SIZE]; - struct llist_head persistent_gnts; + struct list_head persistent_gnts; unsigned int persistent_gnts_c; unsigned long shadow_free; unsigned int feature_flush; @@ -371,10 +371,11 @@ static int blkif_queue_request(struct request *req) lsect = fsect + (sg->length >> 9) - 1; if (info->persistent_gnts_c) { - BUG_ON(llist_empty(&info->persistent_gnts)); - gnt_list_entry = llist_entry( - llist_del_first(&info->persistent_gnts), - struct grant, node); + BUG_ON(list_empty(&info->persistent_gnts)); + gnt_list_entry = list_first_entry( + &info->persistent_gnts, + struct grant, node); + list_del(&gnt_list_entry->node); ref = gnt_list_entry->gref; buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn); @@ -790,9 +791,8 @@ static void blkif_restart_queue(struct work_struct *work) static void blkif_free(struct blkfront_info *info, int suspend) { - struct llist_node *all_gnts; - struct grant *persistent_gnt, *tmp; - struct llist_node *n; + struct grant *persistent_gnt; + struct grant *n; /* Prevent new requests being issued until we fix things up. */ spin_lock_irq(&info->io_lock); @@ -804,20 +804,15 @@ static void blkif_free(struct blkfront_info *info, int suspend) /* Remove all persistent grants */ if (info->persistent_gnts_c) { - all_gnts = llist_del_all(&info->persistent_gnts); - persistent_gnt = llist_entry(all_gnts, typeof(*(persistent_gnt)), node); - while (persistent_gnt) { + list_for_each_entry_safe(persistent_gnt, n, + &info->persistent_gnts, node) { + list_del(&persistent_gnt->node); gnttab_end_foreign_access(persistent_gnt->gref, 0, 0UL); __free_page(pfn_to_page(persistent_gnt->pfn)); - tmp = persistent_gnt; - n = persistent_gnt->node.next; - if (n) - persistent_gnt = llist_entry(n, typeof(*(persistent_gnt)), node); - else - persistent_gnt = NULL; - kfree(tmp); + kfree(persistent_gnt); + info->persistent_gnts_c--; } - info->persistent_gnts_c = 0; + BUG_ON(info->persistent_gnts_c != 0); } /* No more gnttab callback work. */ @@ -875,7 +870,7 @@ static void blkif_completion(struct blk_shadow *s, struct blkfront_info *info, } /* Add the persistent grant into the list of free grants */ for (i = 0; i < s->req.u.rw.nr_segments; i++) { - llist_add(&s->grants_used[i]->node, &info->persistent_gnts); + list_add(&s->grants_used[i]->node, &info->persistent_gnts); info->persistent_gnts_c++; } } @@ -1171,7 +1166,7 @@ static int blkfront_probe(struct xenbus_device *dev, spin_lock_init(&info->io_lock); info->xbdev = dev; info->vdevice = vdevice; - init_llist_head(&info->persistent_gnts); + INIT_LIST_HEAD(&info->persistent_gnts); info->persistent_gnts_c = 0; info->connected = BLKIF_STATE_DISCONNECTED; INIT_WORK(&info->work, blkif_restart_queue); -- cgit v1.1 From 5a3da1fe9561828d0ca7eca664b16ec2b9bf0055 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Fri, 15 Mar 2013 11:32:30 +0000 Subject: inet: limit length of fragment queue hash table bucket lists This patch introduces a constant limit of the fragment queue hash table bucket list lengths. Currently the limit 128 is choosen somewhat arbitrary and just ensures that we can fill up the fragment cache with empty packets up to the default ip_frag_high_thresh limits. It should just protect from list iteration eating considerable amounts of cpu. If we reach the maximum length in one hash bucket a warning is printed. This is implemented on the caller side of inet_frag_find to distinguish between the different users of inet_fragment.c. I dropped the out of memory warning in the ipv4 fragment lookup path, because we already get a warning by the slab allocator. Cc: Eric Dumazet Cc: Jesper Dangaard Brouer Signed-off-by: Hannes Frederic Sowa Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/inet_frag.h | 9 +++++++++ net/ipv4/inet_fragment.c | 20 +++++++++++++++++++- net/ipv4/ip_fragment.c | 11 ++++------- net/ipv6/netfilter/nf_conntrack_reasm.c | 12 ++++++------ net/ipv6/reassembly.c | 8 ++++++-- 5 files changed, 44 insertions(+), 16 deletions(-) diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 76c3fe5..0a1dcc2 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -43,6 +43,13 @@ struct inet_frag_queue { #define INETFRAGS_HASHSZ 64 +/* averaged: + * max_depth = default ipfrag_high_thresh / INETFRAGS_HASHSZ / + * rounded up (SKB_TRUELEN(0) + sizeof(struct ipq or + * struct frag_queue)) + */ +#define INETFRAGS_MAXDEPTH 128 + struct inet_frags { struct hlist_head hash[INETFRAGS_HASHSZ]; /* This rwlock is a global lock (seperate per IPv4, IPv6 and @@ -76,6 +83,8 @@ int inet_frag_evictor(struct netns_frags *nf, struct inet_frags *f, bool force); struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, struct inet_frags *f, void *key, unsigned int hash) __releases(&f->lock); +void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q, + const char *prefix); static inline void inet_frag_put(struct inet_frag_queue *q, struct inet_frags *f) { diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c index 245ae078a..f4fd23d 100644 --- a/net/ipv4/inet_fragment.c +++ b/net/ipv4/inet_fragment.c @@ -21,6 +21,7 @@ #include #include +#include #include static void inet_frag_secret_rebuild(unsigned long dummy) @@ -277,6 +278,7 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, __releases(&f->lock) { struct inet_frag_queue *q; + int depth = 0; hlist_for_each_entry(q, &f->hash[hash], list) { if (q->net == nf && f->match(q, key)) { @@ -284,9 +286,25 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags *nf, read_unlock(&f->lock); return q; } + depth++; } read_unlock(&f->lock); - return inet_frag_create(nf, f, key); + if (depth <= INETFRAGS_MAXDEPTH) + return inet_frag_create(nf, f, key); + else + return ERR_PTR(-ENOBUFS); } EXPORT_SYMBOL(inet_frag_find); + +void inet_frag_maybe_warn_overflow(struct inet_frag_queue *q, + const char *prefix) +{ + static const char msg[] = "inet_frag_find: Fragment hash bucket" + " list length grew over limit " __stringify(INETFRAGS_MAXDEPTH) + ". Dropping fragment.\n"; + + if (PTR_ERR(q) == -ENOBUFS) + LIMIT_NETDEBUG(KERN_WARNING "%s%s", prefix, msg); +} +EXPORT_SYMBOL(inet_frag_maybe_warn_overflow); diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index b6d30ac..a6445b8 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -292,14 +292,11 @@ static inline struct ipq *ip_find(struct net *net, struct iphdr *iph, u32 user) hash = ipqhashfn(iph->id, iph->saddr, iph->daddr, iph->protocol); q = inet_frag_find(&net->ipv4.frags, &ip4_frags, &arg, hash); - if (q == NULL) - goto out_nomem; - + if (IS_ERR_OR_NULL(q)) { + inet_frag_maybe_warn_overflow(q, pr_fmt()); + return NULL; + } return container_of(q, struct ipq, q); - -out_nomem: - LIMIT_NETDEBUG(KERN_ERR pr_fmt("ip_frag_create: no memory left !\n")); - return NULL; } /* Is the fragment too far ahead to be part of ipq? */ diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c index 54087e9..6700069 100644 --- a/net/ipv6/netfilter/nf_conntrack_reasm.c +++ b/net/ipv6/netfilter/nf_conntrack_reasm.c @@ -14,6 +14,8 @@ * 2 of the License, or (at your option) any later version. */ +#define pr_fmt(fmt) "IPv6-nf: " fmt + #include #include #include @@ -180,13 +182,11 @@ static inline struct frag_queue *fq_find(struct net *net, __be32 id, q = inet_frag_find(&net->nf_frag.frags, &nf_frags, &arg, hash); local_bh_enable(); - if (q == NULL) - goto oom; - + if (IS_ERR_OR_NULL(q)) { + inet_frag_maybe_warn_overflow(q, pr_fmt()); + return NULL; + } return container_of(q, struct frag_queue, q); - -oom: - return NULL; } diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 3c6a772..196ab93 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -26,6 +26,9 @@ * YOSHIFUJI,H. @USAGI Always remove fragment header to * calculate ICV correctly. */ + +#define pr_fmt(fmt) "IPv6: " fmt + #include #include #include @@ -185,9 +188,10 @@ fq_find(struct net *net, __be32 id, const struct in6_addr *src, const struct in6 hash = inet6_hash_frag(id, src, dst, ip6_frags.rnd); q = inet_frag_find(&net->ipv6.frags, &ip6_frags, &arg, hash); - if (q == NULL) + if (IS_ERR_OR_NULL(q)) { + inet_frag_maybe_warn_overflow(q, pr_fmt()); return NULL; - + } return container_of(q, struct frag_queue, q); } -- cgit v1.1 From 63b7743fdd4dab8a534f366479c2bf0caa0991f7 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 5 Mar 2013 20:43:42 +0000 Subject: arm64: Do not select GENERIC_HARDIRQS_NO_DEPRECATED Config option GENERIC_HARDIRQS_NO_DEPRECATED was removed in commit 78c89825649a9a5ed526c507603196f467d781a5 ("genirq: Remove the now obsolete config options and select statements"), but the select was accidentally reintroduced in commit 8c2c3df31e3b87cb5348e48776c366ebd1dc5a7a ("arm64: Build infrastructure"). Signed-off-by: Paul Bolle Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index fd70a68..9b6d19f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -9,7 +9,6 @@ config ARM64 select CLONE_BACKWARDS select COMMON_CLK select GENERIC_CLOCKEVENTS - select GENERIC_HARDIRQS_NO_DEPRECATED select GENERIC_IOMAP select GENERIC_IRQ_PROBE select GENERIC_IRQ_SHOW -- cgit v1.1 From 792072066d30372772137be9ee2f4d72d77329f9 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 19 Mar 2013 15:41:37 +0000 Subject: arm64: Kconfig.debug: Remove unused CONFIG_DEBUG_ERRORS The Kconfig entry for DEBUG_ERRORS is a verbatim copy of the former arm entry for that symbol. It got removed in v2.6.39 because it wasn't actually used anywhere. There are still no users of DEBUG_ERRORS so remove this entry too. Signed-off-by: Paul Bolle [catalin.marinas@arm.com: removed option from defconfig] Signed-off-by: Catalin Marinas --- arch/arm64/Kconfig.debug | 11 ----------- arch/arm64/configs/defconfig | 1 - 2 files changed, 12 deletions(-) diff --git a/arch/arm64/Kconfig.debug b/arch/arm64/Kconfig.debug index 5149343..1a6bfe9 100644 --- a/arch/arm64/Kconfig.debug +++ b/arch/arm64/Kconfig.debug @@ -6,17 +6,6 @@ config FRAME_POINTER bool default y -config DEBUG_ERRORS - bool "Verbose kernel error messages" - depends on DEBUG_KERNEL - help - This option controls verbose debugging information which can be - printed when the kernel detects an internal error. This debugging - information is useful to kernel hackers when tracking down problems, - but mostly meaningless to other people. It's safe to say Y unless - you are concerned with the code size or don't want to see these - messages. - config DEBUG_STACK_USAGE bool "Enable stack utilization instrumentation" depends on DEBUG_KERNEL diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig index 9212c78..09bef29 100644 --- a/arch/arm64/configs/defconfig +++ b/arch/arm64/configs/defconfig @@ -82,4 +82,3 @@ CONFIG_DEBUG_KERNEL=y CONFIG_DEBUG_INFO=y # CONFIG_FTRACE is not set CONFIG_ATOMIC64_SELFTEST=y -CONFIG_DEBUG_ERRORS=y -- cgit v1.1 From ffb1dabd1eb10c76a1e7af62f75a1aaa8d590b5a Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Mon, 18 Mar 2013 17:49:32 +0100 Subject: xen-blkback: don't store dev_bus_addr MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dev_bus_addr returned in the grant ref map operation is the mfn of the passed page, there's no need to store it in the persistent grant entry, since we can always get it provided that we have the page. This reduces the memory overhead of persistent grants in blkback. While at it, rename the 'seg[i].buf' to be 'seg[i].offset' as it makes much more sense - as we use that value in bio_add_page which as the fourth argument expects the offset. We hadn't used the physical address as part of this at all. Signed-off-by: Roger Pau Monné Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xen.org [v1: s/buf/offset/] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/blkback.c | 21 ++++++--------------- drivers/block/xen-blkback/common.h | 1 - 2 files changed, 6 insertions(+), 16 deletions(-) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 2cf8381..dd5b2fe 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -442,7 +442,7 @@ int xen_blkif_schedule(void *arg) } struct seg_buf { - unsigned long buf; + unsigned int offset; unsigned int nsec; }; /* @@ -621,30 +621,21 @@ static int xen_blkbk_map(struct blkif_request *req, * If this is a new persistent grant * save the handler */ - persistent_gnts[i]->handle = map[j].handle; - persistent_gnts[i]->dev_bus_addr = - map[j++].dev_bus_addr; + persistent_gnts[i]->handle = map[j++].handle; } pending_handle(pending_req, i) = persistent_gnts[i]->handle; if (ret) continue; - - seg[i].buf = persistent_gnts[i]->dev_bus_addr | - (req->u.rw.seg[i].first_sect << 9); } else { - pending_handle(pending_req, i) = map[j].handle; + pending_handle(pending_req, i) = map[j++].handle; bitmap_set(pending_req->unmap_seg, i, 1); - if (ret) { - j++; + if (ret) continue; - } - - seg[i].buf = map[j++].dev_bus_addr | - (req->u.rw.seg[i].first_sect << 9); } + seg[i].offset = (req->u.rw.seg[i].first_sect << 9); } return ret; } @@ -971,7 +962,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif, (bio_add_page(bio, pages[i], seg[i].nsec << 9, - seg[i].buf & ~PAGE_MASK) == 0)) { + seg[i].offset) == 0)) { bio = bio_alloc(GFP_KERNEL, nseg-i); if (unlikely(bio == NULL)) diff --git a/drivers/block/xen-blkback/common.h b/drivers/block/xen-blkback/common.h index da78346..60103e2 100644 --- a/drivers/block/xen-blkback/common.h +++ b/drivers/block/xen-blkback/common.h @@ -187,7 +187,6 @@ struct persistent_gnt { struct page *page; grant_ref_t gnt; grant_handle_t handle; - uint64_t dev_bus_addr; struct rb_node node; }; -- cgit v1.1 From 9c1e050caeb4d1250f8ceef1180a8b3d0db6c624 Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Mon, 18 Mar 2013 17:49:35 +0100 Subject: xen-blkfront: pre-allocate pages for requests MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This prevents us from having to call alloc_page while we are preparing the request. Since blkfront was calling alloc_page with a spinlock held we used GFP_ATOMIC, which can fail if we are requesting a lot of pages since it is using the emergency memory pools. Allocating all the pages at init prevents us from having to call alloc_page, thus preventing possible failures. Signed-off-by: Roger Pau Monné Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xen.org Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkfront.c | 120 ++++++++++++++++++++++++++++--------------- 1 file changed, 79 insertions(+), 41 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 97324cd1..c640433 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -165,6 +165,69 @@ static int add_id_to_freelist(struct blkfront_info *info, return 0; } +static int fill_grant_buffer(struct blkfront_info *info, int num) +{ + struct page *granted_page; + struct grant *gnt_list_entry, *n; + int i = 0; + + while(i < num) { + gnt_list_entry = kzalloc(sizeof(struct grant), GFP_NOIO); + if (!gnt_list_entry) + goto out_of_memory; + + granted_page = alloc_page(GFP_NOIO); + if (!granted_page) { + kfree(gnt_list_entry); + goto out_of_memory; + } + + gnt_list_entry->pfn = page_to_pfn(granted_page); + gnt_list_entry->gref = GRANT_INVALID_REF; + list_add(&gnt_list_entry->node, &info->persistent_gnts); + i++; + } + + return 0; + +out_of_memory: + list_for_each_entry_safe(gnt_list_entry, n, + &info->persistent_gnts, node) { + list_del(&gnt_list_entry->node); + __free_page(pfn_to_page(gnt_list_entry->pfn)); + kfree(gnt_list_entry); + i--; + } + BUG_ON(i != 0); + return -ENOMEM; +} + +static struct grant *get_grant(grant_ref_t *gref_head, + struct blkfront_info *info) +{ + struct grant *gnt_list_entry; + unsigned long buffer_mfn; + + BUG_ON(list_empty(&info->persistent_gnts)); + gnt_list_entry = list_first_entry(&info->persistent_gnts, struct grant, + node); + list_del(&gnt_list_entry->node); + + if (gnt_list_entry->gref != GRANT_INVALID_REF) { + info->persistent_gnts_c--; + return gnt_list_entry; + } + + /* Assign a gref to this page */ + gnt_list_entry->gref = gnttab_claim_grant_reference(gref_head); + BUG_ON(gnt_list_entry->gref == -ENOSPC); + buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn); + gnttab_grant_foreign_access_ref(gnt_list_entry->gref, + info->xbdev->otherend_id, + buffer_mfn, 0); + return gnt_list_entry; +} + static const char *op_name(int op) { static const char *const names[] = { @@ -306,7 +369,6 @@ static int blkif_queue_request(struct request *req) */ bool new_persistent_gnts; grant_ref_t gref_head; - struct page *granted_page; struct grant *gnt_list_entry = NULL; struct scatterlist *sg; @@ -370,42 +432,9 @@ static int blkif_queue_request(struct request *req) fsect = sg->offset >> 9; lsect = fsect + (sg->length >> 9) - 1; - if (info->persistent_gnts_c) { - BUG_ON(list_empty(&info->persistent_gnts)); - gnt_list_entry = list_first_entry( - &info->persistent_gnts, - struct grant, node); - list_del(&gnt_list_entry->node); - - ref = gnt_list_entry->gref; - buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn); - info->persistent_gnts_c--; - } else { - ref = gnttab_claim_grant_reference(&gref_head); - BUG_ON(ref == -ENOSPC); - - gnt_list_entry = - kmalloc(sizeof(struct grant), - GFP_ATOMIC); - if (!gnt_list_entry) - return -ENOMEM; - - granted_page = alloc_page(GFP_ATOMIC); - if (!granted_page) { - kfree(gnt_list_entry); - return -ENOMEM; - } - - gnt_list_entry->pfn = - page_to_pfn(granted_page); - gnt_list_entry->gref = ref; - - buffer_mfn = pfn_to_mfn(page_to_pfn( - granted_page)); - gnttab_grant_foreign_access_ref(ref, - info->xbdev->otherend_id, - buffer_mfn, 0); - } + gnt_list_entry = get_grant(&gref_head, info); + ref = gnt_list_entry->gref; + buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn); info->shadow[id].grants_used[i] = gnt_list_entry; @@ -803,17 +832,20 @@ static void blkif_free(struct blkfront_info *info, int suspend) blk_stop_queue(info->rq); /* Remove all persistent grants */ - if (info->persistent_gnts_c) { + if (!list_empty(&info->persistent_gnts)) { list_for_each_entry_safe(persistent_gnt, n, &info->persistent_gnts, node) { list_del(&persistent_gnt->node); - gnttab_end_foreign_access(persistent_gnt->gref, 0, 0UL); + if (persistent_gnt->gref != GRANT_INVALID_REF) { + gnttab_end_foreign_access(persistent_gnt->gref, + 0, 0UL); + info->persistent_gnts_c--; + } __free_page(pfn_to_page(persistent_gnt->pfn)); kfree(persistent_gnt); - info->persistent_gnts_c--; } - BUG_ON(info->persistent_gnts_c != 0); } + BUG_ON(info->persistent_gnts_c != 0); /* No more gnttab callback work. */ gnttab_cancel_free_callback(&info->callback); @@ -1008,6 +1040,12 @@ static int setup_blkring(struct xenbus_device *dev, sg_init_table(info->sg, BLKIF_MAX_SEGMENTS_PER_REQUEST); + /* Allocate memory for grants */ + err = fill_grant_buffer(info, BLK_RING_SIZE * + BLKIF_MAX_SEGMENTS_PER_REQUEST); + if (err) + goto fail; + err = xenbus_grant_ring(dev, virt_to_mfn(info->ring.sring)); if (err < 0) { free_page((unsigned long)sring); -- cgit v1.1 From b1173e316bf2ff3c11f46247417f0f5789a4ea0c Mon Sep 17 00:00:00 2001 From: Roger Pau Monne Date: Mon, 18 Mar 2013 17:49:36 +0100 Subject: xen-blkfront: remove frame list from blk_shadow MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We already have the frame (pfn of the grant page) stored inside struct grant, so there's no need to keep an aditional list of mapped frames for a specific request. This reduces memory usage in blkfront. Signed-off-by: Roger Pau Monné Cc: Konrad Rzeszutek Wilk Cc: xen-devel@lists.xen.org Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkfront.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index c640433..a894f88 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -74,7 +74,6 @@ struct grant { struct blk_shadow { struct blkif_request req; struct request *request; - unsigned long frame[BLKIF_MAX_SEGMENTS_PER_REQUEST]; struct grant *grants_used[BLKIF_MAX_SEGMENTS_PER_REQUEST]; }; @@ -356,7 +355,6 @@ static int blkif_ioctl(struct block_device *bdev, fmode_t mode, static int blkif_queue_request(struct request *req) { struct blkfront_info *info = req->rq_disk->private_data; - unsigned long buffer_mfn; struct blkif_request *ring_req; unsigned long id; unsigned int fsect, lsect; @@ -434,7 +432,6 @@ static int blkif_queue_request(struct request *req) gnt_list_entry = get_grant(&gref_head, info); ref = gnt_list_entry->gref; - buffer_mfn = pfn_to_mfn(gnt_list_entry->pfn); info->shadow[id].grants_used[i] = gnt_list_entry; @@ -465,7 +462,6 @@ static int blkif_queue_request(struct request *req) kunmap_atomic(shared_data); } - info->shadow[id].frame[i] = mfn_to_pfn(buffer_mfn); ring_req->u.rw.seg[i] = (struct blkif_request_segment) { .gref = ref, @@ -1268,7 +1264,7 @@ static int blkif_recover(struct blkfront_info *info) gnttab_grant_foreign_access_ref( req->u.rw.seg[j].gref, info->xbdev->otherend_id, - pfn_to_mfn(info->shadow[req->u.rw.id].frame[j]), + pfn_to_mfn(copy[i].grants_used[j]->pfn), 0); } info->shadow[req->u.rw.id].req = *req; -- cgit v1.1 From c300aa64ddf57d9c5d9c898a64b36877345dd4a9 Mon Sep 17 00:00:00 2001 From: Andy Honig Date: Mon, 11 Mar 2013 09:34:52 -0700 Subject: KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME (CVE-2013-1796) If the guest sets the GPA of the time_page so that the request to update the time straddles a page then KVM will write onto an incorrect page. The write is done byusing kmap atomic to get a pointer to the page for the time structure and then performing a memcpy to that page starting at an offset that the guest controls. Well behaved guests always provide a 32-byte aligned address, however a malicious guest could use this to corrupt host kernel memory. Tested: Tested against kvmclock unit test. Signed-off-by: Andrew Honig Signed-off-by: Marcelo Tosatti --- arch/x86/kvm/x86.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index f7c850b..2ade60c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1959,6 +1959,11 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) /* ...but clean it before doing the actual write */ vcpu->arch.time_offset = data & ~(PAGE_MASK | 1); + /* Check that the address is 32-byte aligned. */ + if (vcpu->arch.time_offset & + (sizeof(struct pvclock_vcpu_time_info) - 1)) + break; + vcpu->arch.time_page = gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT); -- cgit v1.1 From 0b79459b482e85cb7426aa7da683a9f2c97aeae1 Mon Sep 17 00:00:00 2001 From: Andy Honig Date: Wed, 20 Feb 2013 14:48:10 -0800 Subject: KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797) There is a potential use after free issue with the handling of MSR_KVM_SYSTEM_TIME. If the guest specifies a GPA in a movable or removable memory such as frame buffers then KVM might continue to write to that address even after it's removed via KVM_SET_USER_MEMORY_REGION. KVM pins the page in memory so it's unlikely to cause an issue, but if the user space component re-purposes the memory previously used for the guest, then the guest will be able to corrupt that memory. Tested: Tested against kvmclock unit test Signed-off-by: Andrew Honig Signed-off-by: Marcelo Tosatti --- arch/x86/include/asm/kvm_host.h | 4 ++-- arch/x86/kvm/x86.c | 47 ++++++++++++++++++----------------------- 2 files changed, 22 insertions(+), 29 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 635a74d..4979778 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -414,8 +414,8 @@ struct kvm_vcpu_arch { gpa_t time; struct pvclock_vcpu_time_info hv_clock; unsigned int hw_tsc_khz; - unsigned int time_offset; - struct page *time_page; + struct gfn_to_hva_cache pv_time; + bool pv_time_enabled; /* set guest stopped flag in pvclock flags field */ bool pvclock_set_guest_stopped_request; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2ade60c..f19ac0a 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1406,10 +1406,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) unsigned long flags, this_tsc_khz; struct kvm_vcpu_arch *vcpu = &v->arch; struct kvm_arch *ka = &v->kvm->arch; - void *shared_kaddr; s64 kernel_ns, max_kernel_ns; u64 tsc_timestamp, host_tsc; - struct pvclock_vcpu_time_info *guest_hv_clock; + struct pvclock_vcpu_time_info guest_hv_clock; u8 pvclock_flags; bool use_master_clock; @@ -1463,7 +1462,7 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) local_irq_restore(flags); - if (!vcpu->time_page) + if (!vcpu->pv_time_enabled) return 0; /* @@ -1525,12 +1524,12 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) */ vcpu->hv_clock.version += 2; - shared_kaddr = kmap_atomic(vcpu->time_page); - - guest_hv_clock = shared_kaddr + vcpu->time_offset; + if (unlikely(kvm_read_guest_cached(v->kvm, &vcpu->pv_time, + &guest_hv_clock, sizeof(guest_hv_clock)))) + return 0; /* retain PVCLOCK_GUEST_STOPPED if set in guest copy */ - pvclock_flags = (guest_hv_clock->flags & PVCLOCK_GUEST_STOPPED); + pvclock_flags = (guest_hv_clock.flags & PVCLOCK_GUEST_STOPPED); if (vcpu->pvclock_set_guest_stopped_request) { pvclock_flags |= PVCLOCK_GUEST_STOPPED; @@ -1543,12 +1542,9 @@ static int kvm_guest_time_update(struct kvm_vcpu *v) vcpu->hv_clock.flags = pvclock_flags; - memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock, - sizeof(vcpu->hv_clock)); - - kunmap_atomic(shared_kaddr); - - mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT); + kvm_write_guest_cached(v->kvm, &vcpu->pv_time, + &vcpu->hv_clock, + sizeof(vcpu->hv_clock)); return 0; } @@ -1837,10 +1833,7 @@ static int kvm_pv_enable_async_pf(struct kvm_vcpu *vcpu, u64 data) static void kvmclock_reset(struct kvm_vcpu *vcpu) { - if (vcpu->arch.time_page) { - kvm_release_page_dirty(vcpu->arch.time_page); - vcpu->arch.time_page = NULL; - } + vcpu->arch.pv_time_enabled = false; } static void accumulate_steal_time(struct kvm_vcpu *vcpu) @@ -1947,6 +1940,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) break; case MSR_KVM_SYSTEM_TIME_NEW: case MSR_KVM_SYSTEM_TIME: { + u64 gpa_offset; kvmclock_reset(vcpu); vcpu->arch.time = data; @@ -1956,19 +1950,17 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) if (!(data & 1)) break; - /* ...but clean it before doing the actual write */ - vcpu->arch.time_offset = data & ~(PAGE_MASK | 1); + gpa_offset = data & ~(PAGE_MASK | 1); /* Check that the address is 32-byte aligned. */ - if (vcpu->arch.time_offset & - (sizeof(struct pvclock_vcpu_time_info) - 1)) + if (gpa_offset & (sizeof(struct pvclock_vcpu_time_info) - 1)) break; - vcpu->arch.time_page = - gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT); - - if (is_error_page(vcpu->arch.time_page)) - vcpu->arch.time_page = NULL; + if (kvm_gfn_to_hva_cache_init(vcpu->kvm, + &vcpu->arch.pv_time, data & ~1ULL)) + vcpu->arch.pv_time_enabled = false; + else + vcpu->arch.pv_time_enabled = true; break; } @@ -2972,7 +2964,7 @@ static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu, */ static int kvm_set_guest_paused(struct kvm_vcpu *vcpu) { - if (!vcpu->arch.time_page) + if (!vcpu->arch.pv_time_enabled) return -EINVAL; vcpu->arch.pvclock_set_guest_stopped_request = true; kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu); @@ -6723,6 +6715,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) goto fail_free_wbinvd_dirty_mask; vcpu->arch.ia32_tsc_adjust_msr = 0x0; + vcpu->arch.pv_time_enabled = false; kvm_async_pf_hash_reset(vcpu); kvm_pmu_init(vcpu); -- cgit v1.1 From a2c118bfab8bc6b8bb213abfc35201e441693d55 Mon Sep 17 00:00:00 2001 From: Andy Honig Date: Wed, 20 Feb 2013 14:49:16 -0800 Subject: KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) If the guest specifies a IOAPIC_REG_SELECT with an invalid value and follows that with a read of the IOAPIC_REG_WINDOW KVM does not properly validate that request. ioapic_read_indirect contains an ASSERT(redir_index < IOAPIC_NUM_PINS), but the ASSERT has no effect in non-debug builds. In recent kernels this allows a guest to cause a kernel oops by reading invalid memory. In older kernels (pre-3.3) this allows a guest to read from large ranges of host memory. Tested: tested against apic unit tests. Signed-off-by: Andrew Honig Signed-off-by: Marcelo Tosatti --- virt/kvm/ioapic.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c index ce82b94..5ba005c 100644 --- a/virt/kvm/ioapic.c +++ b/virt/kvm/ioapic.c @@ -74,9 +74,12 @@ static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic, u32 redir_index = (ioapic->ioregsel - 0x10) >> 1; u64 redir_content; - ASSERT(redir_index < IOAPIC_NUM_PINS); + if (redir_index < IOAPIC_NUM_PINS) + redir_content = + ioapic->redirtbl[redir_index].bits; + else + redir_content = ~0ULL; - redir_content = ioapic->redirtbl[redir_index].bits; result = (ioapic->ioregsel & 0x1) ? (redir_content >> 32) & 0xffffffff : redir_content & 0xffffffff; -- cgit v1.1 From e0b2029614fe7e3b09fab253630c5b70eea58f53 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 12 Mar 2013 21:35:19 +0100 Subject: sparc: delete "if !ULTRA_HAS_POPULATION_COUNT" Commit 2d78d4beb64eb07d50665432867971c481192ebf ("[PATCH] bitops: sparc64: use generic bitops") made the default of GENERIC_HWEIGHT depend on !ULTRA_HAS_POPULATION_COUNT. But since there's no Kconfig symbol with that name, this always evaluates to true. Delete this dependency. Signed-off-by: Paul Bolle Acked-by: Sam Ravnborg Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 289127d..7fcd4b4 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -197,7 +197,7 @@ config RWSEM_XCHGADD_ALGORITHM config GENERIC_HWEIGHT bool - default y if !ULTRA_HAS_POPULATION_COUNT + default y config GENERIC_CALIBRATE_DELAY bool -- cgit v1.1 From f58b20bd6bad48d6fc5633f003c3651115273fb2 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 19 Mar 2013 05:58:47 +0000 Subject: sparc: remove unused "config BITS" sparc's asm/module.h got removed in commit 786d35d45cc40b2a51a18f73e14e135d47fdced7 ("Make most arch asm/module.h files use asm-generic/module.h"). That removed the only two uses of this Kconfig symbol. So we can remove its entry too. > >From arch/sparc/Makefile: > ifeq ($(CONFIG_SPARC32),y) > [...] > > [...] > export BITS := 32 > [...] > > else > [...] > > [...] > export BITS := 64 > [...] > > So $(BITS) is set depending on whether CONFIG_SPARC32 is set or not. > Using $(BITS) in sparc's Makefiles is not using CONFIG_BITS. That > doesn't count as usage of "config BITS". Signed-off-by: Paul Bolle Acked-by: Sam Ravnborg Signed-off-by: David S. Miller --- arch/sparc/Kconfig | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 7fcd4b4..3d361f2 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -84,12 +84,6 @@ config ARCH_DEFCONFIG default "arch/sparc/configs/sparc32_defconfig" if SPARC32 default "arch/sparc/configs/sparc64_defconfig" if SPARC64 -# CONFIG_BITS can be used at source level to get 32/64 bits -config BITS - int - default 32 if SPARC32 - default 64 if SPARC64 - config IOMMU_HELPER bool default y if SPARC64 -- cgit v1.1 From 547b524636249fbe906ab78a50ab0017c490316c Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 19 Mar 2013 17:26:57 -0400 Subject: PCI: Use ROM images from firmware only if no other ROM source available MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Mantas Mikulėnas reported that his graphics hardware failed to initialise after commit f9a37be0f02a ("x86: Use PCI setup data"). The aim of this commit was to ensure that ROM images were available on some Apple systems that don't expose the GPU ROM via any other source. In this case, UEFI appears to have provided a broken ROM image that we were using even though there was a perfectly valid ROM available via other sources. The simplest way to handle this seems to be to just re-order pci_map_rom() and leave any firmare-supplied ROM to last. Signed-off-by: Matthew Garrett Tested-by: Mantas Mikulėnas Signed-off-by: Linus Torvalds --- drivers/pci/rom.c | 55 +++++++++++++++++++++++++++++++++++-------------------- 1 file changed, 35 insertions(+), 20 deletions(-) diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index ab886b7..b41ac77 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -100,6 +100,27 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) return min((size_t)(image - rom), size); } +static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size) +{ + struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; + loff_t start; + + /* assign the ROM an address if it doesn't have one */ + if (res->parent == NULL && pci_assign_resource(pdev, PCI_ROM_RESOURCE)) + return 0; + start = pci_resource_start(pdev, PCI_ROM_RESOURCE); + *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); + + if (*size == 0) + return 0; + + /* Enable ROM space decodes */ + if (pci_enable_rom(pdev)) + return 0; + + return start; +} + /** * pci_map_rom - map a PCI ROM to kernel space * @pdev: pointer to pci device struct @@ -114,21 +135,15 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) { struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - loff_t start; + loff_t start = 0; void __iomem *rom; /* - * Some devices may provide ROMs via a source other than the BAR - */ - if (pdev->rom && pdev->romlen) { - *size = pdev->romlen; - return phys_to_virt(pdev->rom); - /* * IORESOURCE_ROM_SHADOW set on x86, x86_64 and IA64 supports legacy * memory map if the VGA enable bit of the Bridge Control register is * set for embedded VGA. */ - } else if (res->flags & IORESOURCE_ROM_SHADOW) { + if (res->flags & IORESOURCE_ROM_SHADOW) { /* primary video rom always starts here */ start = (loff_t)0xC0000; *size = 0x20000; /* cover C000:0 through E000:0 */ @@ -139,21 +154,21 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) return (void __iomem *)(unsigned long) pci_resource_start(pdev, PCI_ROM_RESOURCE); } else { - /* assign the ROM an address if it doesn't have one */ - if (res->parent == NULL && - pci_assign_resource(pdev,PCI_ROM_RESOURCE)) - return NULL; - start = pci_resource_start(pdev, PCI_ROM_RESOURCE); - *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); - if (*size == 0) - return NULL; - - /* Enable ROM space decodes */ - if (pci_enable_rom(pdev)) - return NULL; + start = pci_find_rom(pdev, size); } } + /* + * Some devices may provide ROMs via a source other than the BAR + */ + if (!start && pdev->rom && pdev->romlen) { + *size = pdev->romlen; + return phys_to_virt(pdev->rom); + } + + if (!start) + return NULL; + rom = ioremap(start, *size); if (!rom) { /* restore enable if ioremap fails */ -- cgit v1.1 From c12aba5aa0e60b7947bc8b6ea25ef55c4acf81a4 Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Tue, 19 Mar 2013 09:56:57 +0100 Subject: drm/i915: stop using GMBUS IRQs on Gen4 chips Commit 28c70f162 ("drm/i915: use the gmbus irq for waits") switched to using GMBUS irqs instead of GPIO bit-banging for chipset generations 4 and above. It turns out though that on many systems this leads to spurious interrupts being generated, long after the register write to disable the IRQs has been issued. Typically this results in the spurious interrupt source getting disabled: [ 9.636345] irq 16: nobody cared (try booting with the "irqpoll" option) [ 9.637915] Pid: 4157, comm: ifup Tainted: GF 3.9.0-rc2-00341-g0863702 #422 [ 9.639484] Call Trace: [ 9.640731] [] __report_bad_irq+0x1d/0xc7 [ 9.640731] [] note_interrupt+0x15b/0x1e8 [ 9.640731] [] handle_irq_event_percpu+0x1bf/0x214 [ 9.640731] [] handle_irq_event+0x3c/0x5c [ 9.640731] [] handle_fasteoi_irq+0x7a/0xb0 [ 9.640731] [] handle_irq+0x1a/0x24 [ 9.640731] [] do_IRQ+0x48/0xaf [ 9.640731] [] common_interrupt+0x6a/0x6a [ 9.640731] [] ? system_call_fastpath+0x16/0x1b [ 9.640731] handlers: [ 9.640731] [] usb_hcd_irq [usbcore] [ 9.640731] [] yenta_interrupt [yenta_socket] [ 9.640731] Disabling IRQ #16 The really curious thing is now that irq 16 is _not_ the interrupt for the i915 driver when using MSI, but it _is_ the interrupt when not using MSI. So by all indications it seems like gmbus is able to generate a legacy (shared) interrupt in MSI mode on some configurations. I've tried to reproduce this and the differentiating thing seems to be that on unaffected systems no other device uses irq 16 (which seems to be the non-MSI intel gfx interrupt on all gm45). I have no idea how that even can happen. To avoid tempting this elephant into a rage, just disable gmbus interrupt support on gen 4. v2: Improve the commit message with exact details of what's going on. Also add a comment in the code to warn against this particular elephant in the room. v3: Move the comment explaing how gen4 blows up next to the definition of HAS_GMBUS_IRQ to keep the code-flow straight. Suggested by Chris Wilson. Signed-off-by: Jiri Kosina (v1) Acked-by: Chris Wilson References: https://lkml.org/lkml/2013/3/8/325 Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_i2c.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index acf8aec..ef4744e 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -203,7 +203,13 @@ intel_gpio_setup(struct intel_gmbus *bus, u32 pin) algo->data = bus; } -#define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 4) +/* + * gmbus on gen4 seems to be able to generate legacy interrupts even when in MSI + * mode. This results in spurious interrupt warnings if the legacy irq no. is + * shared with another device. The kernel then disables that interrupt source + * and so prevents the other device from working properly. + */ +#define HAS_GMBUS_IRQ(dev) (INTEL_INFO(dev)->gen >= 5) static int gmbus_wait_hw_status(struct drm_i915_private *dev_priv, u32 gmbus2_status, @@ -214,6 +220,9 @@ gmbus_wait_hw_status(struct drm_i915_private *dev_priv, u32 gmbus2 = 0; DEFINE_WAIT(wait); + if (!HAS_GMBUS_IRQ(dev_priv->dev)) + gmbus4_irq_en = 0; + /* Important: The hw handles only the first bit, so set only one! Since * we also need to check for NAKs besides the hw ready/idle signal, we * need to wake up periodically and check that ourselves. */ -- cgit v1.1 From 3dd6664fac7e6041bfc8756ae9e8c78f59108cd9 Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Tue, 19 Mar 2013 13:09:59 +0000 Subject: netfilter: remove unused "config IP_NF_QUEUE" Kconfig symbol IP_NF_QUEUE is unused since commit d16cf20e2f2f13411eece7f7fb72c17d141c4a84 ("netfilter: remove ip_queue support"). Let's remove it too. Signed-off-by: Paul Bolle Signed-off-by: Pablo Neira Ayuso --- net/ipv4/netfilter/Kconfig | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig index ce2d43e..0d755c5 100644 --- a/net/ipv4/netfilter/Kconfig +++ b/net/ipv4/netfilter/Kconfig @@ -36,19 +36,6 @@ config NF_CONNTRACK_PROC_COMPAT If unsure, say Y. -config IP_NF_QUEUE - tristate "IP Userspace queueing via NETLINK (OBSOLETE)" - depends on NETFILTER_ADVANCED - help - Netfilter has the ability to queue packets to user space: the - netlink device can be used to access them using this driver. - - This option enables the old IPv4-only "ip_queue" implementation - which has been obsoleted by the new "nfnetlink_queue" code (see - CONFIG_NETFILTER_NETLINK_QUEUE). - - To compile it as a module, choose M here. If unsure, say N. - config IP_NF_IPTABLES tristate "IP tables support (required for filtering/masq/NAT)" default m if NETFILTER_ADVANCED=n -- cgit v1.1 From f002a24388cc460c8a9be7d446a9871f7c9d52b6 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Mon, 18 Mar 2013 13:15:57 -0700 Subject: target/file: Bump FD_MAX_SECTORS to 2048 to handle 1M sized I/Os This patch bumps the default FILEIO backend FD_MAX_SECTORS value from 1024 -> 2048 in order to allow block_size=512 to handle 1M sized I/Os. The current default rejects I/Os larger than 512K in sbc_parse_cdb(): [12015.915146] SCSI OP 2ah with too big sectors 1347 exceeds backend hw_max_sectors: 1024 [12015.977744] SCSI OP 2ah with too big sectors 2048 exceeds backend hw_max_sectors: 1024 This issue is present in >= v3.5 based kernels, introduced after the removal of se_task logic. Reported-by: Viljami Ilola Cc: Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_file.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h index bc02b01..37ffc5b 100644 --- a/drivers/target/target_core_file.h +++ b/drivers/target/target_core_file.h @@ -7,7 +7,7 @@ #define FD_DEVICE_QUEUE_DEPTH 32 #define FD_MAX_DEVICE_QUEUE_DEPTH 128 #define FD_BLOCKSIZE 512 -#define FD_MAX_SECTORS 1024 +#define FD_MAX_SECTORS 2048 #define RRF_EMULATE_CDB 0x01 #define RRF_GOT_LBA 0x02 -- cgit v1.1 From 8f27d487bcc2bd603c2d87e1729abcbc301f15db Mon Sep 17 00:00:00 2001 From: Asias He Date: Tue, 19 Mar 2013 12:55:16 +0800 Subject: target/pscsi: Reject cross page boundary case in pscsi_map_sg We can only have one page of data in each sg element, so we can not cross a page boundary. Fail this case. The 'while (len > 0 && data_len > 0) {}' loop is not necessary. The loop can only be executed once. Signed-off-by: Asias He Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_pscsi.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 82e78d7..e992b27 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -883,7 +883,14 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, pr_debug("PSCSI: i: %d page: %p len: %d off: %d\n", i, page, len, off); - while (len > 0 && data_len > 0) { + /* + * We only have one page of data in each sg element, + * we can not cross a page boundary. + */ + if (off + len > PAGE_SIZE) + goto fail; + + if (len > 0 && data_len > 0) { bytes = min_t(unsigned int, len, PAGE_SIZE - off); bytes = min(bytes, data_len); @@ -940,9 +947,7 @@ pscsi_map_sg(struct se_cmd *cmd, struct scatterlist *sgl, u32 sgl_nents, bio = NULL; } - len -= bytes; data_len -= bytes; - off = 0; } } -- cgit v1.1 From ce7d363aaf1e28be8406a2976220944ca487e8ca Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 4 Mar 2013 12:37:14 +1100 Subject: md/raid5: schedule_construction should abort if nothing to do. Since commit 1ed850f356a0a422013846b5291acff08815008b md/raid5: make sure to_read and to_write never go negative. It has been possible for handle_stripe_dirtying to be called when there isn't actually any work to do. It then calls schedule_reconstruction() which will set R5_LOCKED on the parity block(s) even when nothing else is happening. This then causes problems in do_release_stripe(). So add checks to schedule_reconstruction() so that if it doesn't find anything to do, it just aborts. This bug was introduced in v3.7, so the patch is suitable for -stable kernels since then. Cc: stable@vger.kernel.org (v3.7+) Reported-by: majianpeng Signed-off-by: NeilBrown --- drivers/md/raid5.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 35031c8..5601dda 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2283,17 +2283,6 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s, int level = conf->level; if (rcw) { - /* if we are not expanding this is a proper write request, and - * there will be bios with new data to be drained into the - * stripe cache - */ - if (!expand) { - sh->reconstruct_state = reconstruct_state_drain_run; - set_bit(STRIPE_OP_BIODRAIN, &s->ops_request); - } else - sh->reconstruct_state = reconstruct_state_run; - - set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request); for (i = disks; i--; ) { struct r5dev *dev = &sh->dev[i]; @@ -2306,6 +2295,21 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s, s->locked++; } } + /* if we are not expanding this is a proper write request, and + * there will be bios with new data to be drained into the + * stripe cache + */ + if (!expand) { + if (!s->locked) + /* False alarm, nothing to do */ + return; + sh->reconstruct_state = reconstruct_state_drain_run; + set_bit(STRIPE_OP_BIODRAIN, &s->ops_request); + } else + sh->reconstruct_state = reconstruct_state_run; + + set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request); + if (s->locked + conf->max_degraded == disks) if (!test_and_set_bit(STRIPE_FULL_WRITE, &sh->state)) atomic_inc(&conf->pending_full_writes); @@ -2314,11 +2318,6 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s, BUG_ON(!(test_bit(R5_UPTODATE, &sh->dev[pd_idx].flags) || test_bit(R5_Wantcompute, &sh->dev[pd_idx].flags))); - sh->reconstruct_state = reconstruct_state_prexor_drain_run; - set_bit(STRIPE_OP_PREXOR, &s->ops_request); - set_bit(STRIPE_OP_BIODRAIN, &s->ops_request); - set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request); - for (i = disks; i--; ) { struct r5dev *dev = &sh->dev[i]; if (i == pd_idx) @@ -2333,6 +2332,13 @@ schedule_reconstruction(struct stripe_head *sh, struct stripe_head_state *s, s->locked++; } } + if (!s->locked) + /* False alarm - nothing to do */ + return; + sh->reconstruct_state = reconstruct_state_prexor_drain_run; + set_bit(STRIPE_OP_PREXOR, &s->ops_request); + set_bit(STRIPE_OP_BIODRAIN, &s->ops_request); + set_bit(STRIPE_OP_RECONSTRUCT, &s->ops_request); } /* keep the parity disk(s) locked while asynchronous operations -- cgit v1.1 From e3620a3ad52609f64a2402e4b59300afb4b83b77 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 7 Mar 2013 16:22:01 -0600 Subject: MD RAID5: Avoid accessing gendisk or queue structs when not available MD RAID5: Fix kernel oops when RAID4/5/6 is used via device-mapper Commit a9add5d (v3.8-rc1) added blktrace calls to the RAID4/5/6 driver. However, when device-mapper is used to create RAID4/5/6 arrays, the mddev->gendisk and mddev->queue fields are not setup. Therefore, calling things like trace_block_bio_remap will cause a kernel oops. This patch conditionalizes those calls on whether the proper fields exist to make the calls. (Device-mapper will call trace_block_bio_remap on its own.) This patch is suitable for the 3.8.y stable kernel. Cc: stable@vger.kernel.org (v3.8+) Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/raid5.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 5601dda..52ba88a 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -674,9 +674,11 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) bi->bi_next = NULL; if (rrdev) set_bit(R5_DOUBLE_LOCKED, &sh->dev[i].flags); - trace_block_bio_remap(bdev_get_queue(bi->bi_bdev), - bi, disk_devt(conf->mddev->gendisk), - sh->dev[i].sector); + + if (conf->mddev->gendisk) + trace_block_bio_remap(bdev_get_queue(bi->bi_bdev), + bi, disk_devt(conf->mddev->gendisk), + sh->dev[i].sector); generic_make_request(bi); } if (rrdev) { @@ -704,9 +706,10 @@ static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) rbi->bi_io_vec[0].bv_offset = 0; rbi->bi_size = STRIPE_SIZE; rbi->bi_next = NULL; - trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev), - rbi, disk_devt(conf->mddev->gendisk), - sh->dev[i].sector); + if (conf->mddev->gendisk) + trace_block_bio_remap(bdev_get_queue(rbi->bi_bdev), + rbi, disk_devt(conf->mddev->gendisk), + sh->dev[i].sector); generic_make_request(rbi); } if (!rdev && !rrdev) { @@ -2835,8 +2838,10 @@ static void handle_stripe_dirtying(struct r5conf *conf, set_bit(STRIPE_HANDLE, &sh->state); if (rmw < rcw && rmw > 0) { /* prefer read-modify-write, but need to get some data */ - blk_add_trace_msg(conf->mddev->queue, "raid5 rmw %llu %d", - (unsigned long long)sh->sector, rmw); + if (conf->mddev->queue) + blk_add_trace_msg(conf->mddev->queue, + "raid5 rmw %llu %d", + (unsigned long long)sh->sector, rmw); for (i = disks; i--; ) { struct r5dev *dev = &sh->dev[i]; if ((dev->towrite || i == sh->pd_idx) && @@ -2886,7 +2891,7 @@ static void handle_stripe_dirtying(struct r5conf *conf, } } } - if (rcw) + if (rcw && conf->mddev->queue) blk_add_trace_msg(conf->mddev->queue, "raid5 rcw %llu %d %d %d", (unsigned long long)sh->sector, rcw, qread, test_bit(STRIPE_DELAYED, &sh->state)); @@ -3993,9 +3998,10 @@ static int chunk_aligned_read(struct mddev *mddev, struct bio * raid_bio) atomic_inc(&conf->active_aligned_reads); spin_unlock_irq(&conf->device_lock); - trace_block_bio_remap(bdev_get_queue(align_bi->bi_bdev), - align_bi, disk_devt(mddev->gendisk), - raid_bio->bi_sector); + if (mddev->gendisk) + trace_block_bio_remap(bdev_get_queue(align_bi->bi_bdev), + align_bi, disk_devt(mddev->gendisk), + raid_bio->bi_sector); generic_make_request(align_bi); return 1; } else { @@ -4089,7 +4095,8 @@ static void raid5_unplug(struct blk_plug_cb *blk_cb, bool from_schedule) } spin_unlock_irq(&conf->device_lock); } - trace_block_unplug(mddev->queue, cnt, !from_schedule); + if (mddev->queue) + trace_block_unplug(mddev->queue, cnt, !from_schedule); kfree(cb); } -- cgit v1.1 From 90584fc93d461520a888f691144f0879283b3624 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Thu, 7 Mar 2013 16:24:26 -0600 Subject: MD: Prevent sysfs operations on uninitialized kobjects MD: Prevent sysfs operations on uninitialized kobjects Device-mapper does not use sysfs; but when device-mapper is leveraging MD's RAID personalities, MD sometimes attempts to update sysfs. This patch adds checks for 'mddev-kobj.sd' in sysfs_[un]link_rdev to ensure it is about to operate on something valid. This patch also checks for 'mddev->kobj.sd' before calling 'sysfs_notify' in 'remove_and_add_spares'. Although 'sysfs_notify' already makes this check, doing so in 'remove_and_add_spares' prevents an additional mutex operation. Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/md.c | 6 ++---- drivers/md/md.h | 4 ++-- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index fcb878f..aeceedf 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7663,10 +7663,8 @@ static int remove_and_add_spares(struct mddev *mddev) removed++; } } - if (removed) - sysfs_notify(&mddev->kobj, NULL, - "degraded"); - + if (removed && mddev->kobj.sd) + sysfs_notify(&mddev->kobj, NULL, "degraded"); rdev_for_each(rdev, mddev) { if (rdev->raid_disk >= 0 && diff --git a/drivers/md/md.h b/drivers/md/md.h index eca59c3..d90fb1a 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -506,7 +506,7 @@ static inline char * mdname (struct mddev * mddev) static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev) { char nm[20]; - if (!test_bit(Replacement, &rdev->flags)) { + if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) { sprintf(nm, "rd%d", rdev->raid_disk); return sysfs_create_link(&mddev->kobj, &rdev->kobj, nm); } else @@ -516,7 +516,7 @@ static inline int sysfs_link_rdev(struct mddev *mddev, struct md_rdev *rdev) static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev) { char nm[20]; - if (!test_bit(Replacement, &rdev->flags)) { + if (!test_bit(Replacement, &rdev->flags) && mddev->kobj.sd) { sprintf(nm, "rd%d", rdev->raid_disk); sysfs_remove_link(&mddev->kobj, nm); } -- cgit v1.1 From f8dfcffd0472a0f353f34a567ad3f53568914d04 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 12 Mar 2013 12:18:06 +1100 Subject: md/raid5: ensure sync and DISCARD don't happen at the same time. A number of problems can occur due to races between resync/recovery and discard. - if sync_request calls handle_stripe() while a discard is happening on the stripe, it might call handle_stripe_clean_event before all of the individual discard requests have completed (so some devices are still locked, but not all). Since commit ca64cae96037de16e4af92678814f5d4bf0c1c65 md/raid5: Make sure we clear R5_Discard when discard is finished. this will cause R5_Discard to be cleared for the parity device, so handle_stripe_clean_event() will not be called when the other devices do become unlocked, so their ->written will not be cleared. This ultimately leads to a WARN_ON in init_stripe and a lock-up. - If handle_stripe_clean_event() does clear R5_UPTODATE at an awkward time for resync, it can lead to s->uptodate being less than disks in handle_parity_checks5(), which triggers a BUG (because it is one). So: - keep R5_Discard on the parity device until all other devices have completed their discard request - make sure we don't try to have a 'discard' and a 'sync' action at the same time. This involves a new stripe flag to we know when a 'discard' is happening, and the use of R5_Overlap on the parity disk so when a discard is wanted while a sync is active, so we know to wake up the discard at the appropriate time. Discard support for RAID5 was added in 3.7, so this is suitable for any -stable kernel since 3.7. Cc: stable@vger.kernel.org (v3.7+) Reported-by: Jes Sorensen Tested-by: Jes Sorensen Signed-off-by: NeilBrown --- drivers/md/raid5.c | 45 +++++++++++++++++++++++++++++++++++++++------ drivers/md/raid5.h | 1 + 2 files changed, 40 insertions(+), 6 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 52ba88a..42a8997 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -2576,6 +2576,8 @@ handle_failed_sync(struct r5conf *conf, struct stripe_head *sh, int i; clear_bit(STRIPE_SYNCING, &sh->state); + if (test_and_clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags)) + wake_up(&conf->wait_for_overlap); s->syncing = 0; s->replacing = 0; /* There is nothing more to do for sync/check/repair. @@ -2749,6 +2751,7 @@ static void handle_stripe_clean_event(struct r5conf *conf, { int i; struct r5dev *dev; + int discard_pending = 0; for (i = disks; i--; ) if (sh->dev[i].written) { @@ -2777,9 +2780,23 @@ static void handle_stripe_clean_event(struct r5conf *conf, STRIPE_SECTORS, !test_bit(STRIPE_DEGRADED, &sh->state), 0); - } - } else if (test_bit(R5_Discard, &sh->dev[i].flags)) - clear_bit(R5_Discard, &sh->dev[i].flags); + } else if (test_bit(R5_Discard, &dev->flags)) + discard_pending = 1; + } + if (!discard_pending && + test_bit(R5_Discard, &sh->dev[sh->pd_idx].flags)) { + clear_bit(R5_Discard, &sh->dev[sh->pd_idx].flags); + clear_bit(R5_UPTODATE, &sh->dev[sh->pd_idx].flags); + if (sh->qd_idx >= 0) { + clear_bit(R5_Discard, &sh->dev[sh->qd_idx].flags); + clear_bit(R5_UPTODATE, &sh->dev[sh->qd_idx].flags); + } + /* now that discard is done we can proceed with any sync */ + clear_bit(STRIPE_DISCARD, &sh->state); + if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state)) + set_bit(STRIPE_HANDLE, &sh->state); + + } if (test_and_clear_bit(STRIPE_FULL_WRITE, &sh->state)) if (atomic_dec_and_test(&conf->pending_full_writes)) @@ -3431,9 +3448,15 @@ static void handle_stripe(struct stripe_head *sh) return; } - if (test_and_clear_bit(STRIPE_SYNC_REQUESTED, &sh->state)) { - set_bit(STRIPE_SYNCING, &sh->state); - clear_bit(STRIPE_INSYNC, &sh->state); + if (test_bit(STRIPE_SYNC_REQUESTED, &sh->state)) { + spin_lock(&sh->stripe_lock); + /* Cannot process 'sync' concurrently with 'discard' */ + if (!test_bit(STRIPE_DISCARD, &sh->state) && + test_and_clear_bit(STRIPE_SYNC_REQUESTED, &sh->state)) { + set_bit(STRIPE_SYNCING, &sh->state); + clear_bit(STRIPE_INSYNC, &sh->state); + } + spin_unlock(&sh->stripe_lock); } clear_bit(STRIPE_DELAYED, &sh->state); @@ -3593,6 +3616,8 @@ static void handle_stripe(struct stripe_head *sh) test_bit(STRIPE_INSYNC, &sh->state)) { md_done_sync(conf->mddev, STRIPE_SECTORS, 1); clear_bit(STRIPE_SYNCING, &sh->state); + if (test_and_clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags)) + wake_up(&conf->wait_for_overlap); } /* If the failed drives are just a ReadError, then we might need @@ -4159,6 +4184,13 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi) sh = get_active_stripe(conf, logical_sector, 0, 0, 0); prepare_to_wait(&conf->wait_for_overlap, &w, TASK_UNINTERRUPTIBLE); + set_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags); + if (test_bit(STRIPE_SYNCING, &sh->state)) { + release_stripe(sh); + schedule(); + goto again; + } + clear_bit(R5_Overlap, &sh->dev[sh->pd_idx].flags); spin_lock_irq(&sh->stripe_lock); for (d = 0; d < conf->raid_disks; d++) { if (d == sh->pd_idx || d == sh->qd_idx) @@ -4171,6 +4203,7 @@ static void make_discard_request(struct mddev *mddev, struct bio *bi) goto again; } } + set_bit(STRIPE_DISCARD, &sh->state); finish_wait(&conf->wait_for_overlap, &w); for (d = 0; d < conf->raid_disks; d++) { if (d == sh->pd_idx || d == sh->qd_idx) diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index 18b2c4a..050a334 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -323,6 +323,7 @@ enum { STRIPE_COMPUTE_RUN, STRIPE_OPS_REQ_PENDING, STRIPE_ON_UNPLUG_LIST, + STRIPE_DISCARD, }; /* -- cgit v1.1 From 238f5908bd48f9e2f4668e0289e88cba969d710c Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Mon, 11 Mar 2013 11:27:44 +0100 Subject: md: remove CONFIG_MULTICORE_RAID456 entirely Once instance of this Kconfig macro remained after commit 51acbcec6c42b24482bac18e42befc822524535d ("md: remove CONFIG_MULTICORE_RAID456"). Remove that one too. And, while we're at it, also remove it from the defconfig files that carry it. Signed-off-by: Paul Bolle Signed-off-by: NeilBrown --- arch/tile/configs/tilegx_defconfig | 1 - arch/tile/configs/tilepro_defconfig | 1 - drivers/md/raid5.h | 4 ---- 3 files changed, 6 deletions(-) diff --git a/arch/tile/configs/tilegx_defconfig b/arch/tile/configs/tilegx_defconfig index 8c5eff6..4768481 100644 --- a/arch/tile/configs/tilegx_defconfig +++ b/arch/tile/configs/tilegx_defconfig @@ -330,7 +330,6 @@ CONFIG_MD_RAID0=m CONFIG_MD_RAID1=m CONFIG_MD_RAID10=m CONFIG_MD_RAID456=m -CONFIG_MULTICORE_RAID456=y CONFIG_MD_FAULTY=m CONFIG_BLK_DEV_DM=m CONFIG_DM_DEBUG=y diff --git a/arch/tile/configs/tilepro_defconfig b/arch/tile/configs/tilepro_defconfig index e7a3dfc..dd2b8f0 100644 --- a/arch/tile/configs/tilepro_defconfig +++ b/arch/tile/configs/tilepro_defconfig @@ -324,7 +324,6 @@ CONFIG_MD_RAID0=m CONFIG_MD_RAID1=m CONFIG_MD_RAID10=m CONFIG_MD_RAID456=m -CONFIG_MULTICORE_RAID456=y CONFIG_MD_FAULTY=m CONFIG_BLK_DEV_DM=m CONFIG_DM_DEBUG=y diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h index 050a334..b0b663b 100644 --- a/drivers/md/raid5.h +++ b/drivers/md/raid5.h @@ -221,10 +221,6 @@ struct stripe_head { struct stripe_operations { int target, target2; enum sum_check_flags zero_sum_result; - #ifdef CONFIG_MULTICORE_RAID456 - unsigned long request; - wait_queue_head_t wait_for_ops; - #endif } ops; struct r5dev { /* rreq and rvec are used for the replacement device when -- cgit v1.1 From c83a9d5e425d4678b05ca058fec6254f18601474 Mon Sep 17 00:00:00 2001 From: Fenghua Yu Date: Tue, 19 Mar 2013 08:04:44 -0700 Subject: x86-32, microcode_intel_early: Fix crash with CONFIG_DEBUG_VIRTUAL In 32-bit, __pa_symbol() in CONFIG_DEBUG_VIRTUAL accesses kernel data (e.g. max_low_pfn) that not only hasn't been setup yet in such early boot phase, but since we are in linear mode, cannot even be detected as uninitialized. Thus, use __pa_nodebug() rather than __pa_symbol() to get a global symbol's physical address. Signed-off-by: Fenghua Yu Link: http://lkml.kernel.org/r/1363705484-27645-1-git-send-email-fenghua.yu@intel.com Reported-and-tested-by: Tetsuo Handa Signed-off-by: H. Peter Anvin --- arch/x86/kernel/microcode_intel_early.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/microcode_intel_early.c b/arch/x86/kernel/microcode_intel_early.c index 7890bc8..5992ee8 100644 --- a/arch/x86/kernel/microcode_intel_early.c +++ b/arch/x86/kernel/microcode_intel_early.c @@ -90,13 +90,13 @@ microcode_phys(struct microcode_intel **mc_saved_tmp, struct microcode_intel ***mc_saved; mc_saved = (struct microcode_intel ***) - __pa_symbol(&mc_saved_data->mc_saved); + __pa_nodebug(&mc_saved_data->mc_saved); for (i = 0; i < mc_saved_data->mc_saved_count; i++) { struct microcode_intel *p; p = *(struct microcode_intel **) - __pa(mc_saved_data->mc_saved + i); - mc_saved_tmp[i] = (struct microcode_intel *)__pa(p); + __pa_nodebug(mc_saved_data->mc_saved + i); + mc_saved_tmp[i] = (struct microcode_intel *)__pa_nodebug(p); } } #endif @@ -562,7 +562,7 @@ scan_microcode(unsigned long start, unsigned long end, struct cpio_data cd; long offset = 0; #ifdef CONFIG_X86_32 - char *p = (char *)__pa_symbol(ucode_name); + char *p = (char *)__pa_nodebug(ucode_name); #else char *p = ucode_name; #endif @@ -630,8 +630,8 @@ static void __cpuinit print_ucode(struct ucode_cpu_info *uci) if (mc_intel == NULL) return; - delay_ucode_info_p = (int *)__pa_symbol(&delay_ucode_info); - current_mc_date_p = (int *)__pa_symbol(¤t_mc_date); + delay_ucode_info_p = (int *)__pa_nodebug(&delay_ucode_info); + current_mc_date_p = (int *)__pa_nodebug(¤t_mc_date); *delay_ucode_info_p = 1; *current_mc_date_p = mc_intel->hdr.date; @@ -741,15 +741,15 @@ load_ucode_intel_bsp(void) #ifdef CONFIG_X86_32 struct boot_params *boot_params_p; - boot_params_p = (struct boot_params *)__pa_symbol(&boot_params); + boot_params_p = (struct boot_params *)__pa_nodebug(&boot_params); ramdisk_image = boot_params_p->hdr.ramdisk_image; ramdisk_size = boot_params_p->hdr.ramdisk_size; initrd_start_early = ramdisk_image; initrd_end_early = initrd_start_early + ramdisk_size; _load_ucode_intel_bsp( - (struct mc_saved_data *)__pa_symbol(&mc_saved_data), - (unsigned long *)__pa_symbol(&mc_saved_in_initrd), + (struct mc_saved_data *)__pa_nodebug(&mc_saved_data), + (unsigned long *)__pa_nodebug(&mc_saved_in_initrd), initrd_start_early, initrd_end_early, &uci); #else ramdisk_image = boot_params.hdr.ramdisk_image; @@ -772,10 +772,10 @@ void __cpuinit load_ucode_intel_ap(void) unsigned long *initrd_start_p; mc_saved_in_initrd_p = - (unsigned long *)__pa_symbol(mc_saved_in_initrd); - mc_saved_data_p = (struct mc_saved_data *)__pa_symbol(&mc_saved_data); - initrd_start_p = (unsigned long *)__pa_symbol(&initrd_start); - initrd_start_addr = (unsigned long)__pa_symbol(*initrd_start_p); + (unsigned long *)__pa_nodebug(mc_saved_in_initrd); + mc_saved_data_p = (struct mc_saved_data *)__pa_nodebug(&mc_saved_data); + initrd_start_p = (unsigned long *)__pa_nodebug(&initrd_start); + initrd_start_addr = (unsigned long)__pa_nodebug(*initrd_start_p); #else mc_saved_data_p = &mc_saved_data; mc_saved_in_initrd_p = mc_saved_in_initrd; -- cgit v1.1 From 61ac51301e6c6d4ed977d7674ce2b8e713619a9b Mon Sep 17 00:00:00 2001 From: Torstein Hegge Date: Tue, 19 Mar 2013 17:12:14 +0100 Subject: ALSA: usb: Parse UAC2 extension unit like for UAC1 UAC2_EXTENSION_UNIT_V2 differs from UAC1_EXTENSION_UNIT, but can be handled in the same way when parsing the unit. Otherwise parse_audio_unit() fails when it sees an extension unit on a UAC2 device. UAC2_EXTENSION_UNIT_V2 is outside the range allocated by UAC1. Signed-off-by: Torstein Hegge Acked-by: Daniel Mack Cc: Signed-off-by: Takashi Iwai --- sound/usb/mixer.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 638e7f7..8eb84c0 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -725,7 +725,8 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_ case UAC1_PROCESSING_UNIT: case UAC1_EXTENSION_UNIT: /* UAC2_PROCESSING_UNIT_V2 */ - /* UAC2_EFFECT_UNIT */ { + /* UAC2_EFFECT_UNIT */ + case UAC2_EXTENSION_UNIT_V2: { struct uac_processing_unit_descriptor *d = p1; if (state->mixer->protocol == UAC_VERSION_2 && @@ -2052,6 +2053,8 @@ static int parse_audio_unit(struct mixer_build *state, int unitid) return parse_audio_extension_unit(state, unitid, p1); else /* UAC_VERSION_2 */ return parse_audio_processing_unit(state, unitid, p1); + case UAC2_EXTENSION_UNIT_V2: + return parse_audio_extension_unit(state, unitid, p1); default: snd_printk(KERN_ERR "usbaudio: unit %u: unexpected type 0x%02x\n", unitid, p1[2]); return -EINVAL; -- cgit v1.1 From 4d7b86c98e445b075c2c4c3757eb6d3d6efbe72e Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 19 Mar 2013 21:09:24 +0100 Subject: ALSA: snd-usb: mixer: propagate errors up the call chain In check_input_term() and parse_audio_feature_unit(), propagate the error value that has been returned by a failing function instead of -EINVAL. That helps cleaning up the error pathes in the mixer. Signed-off-by: Daniel Mack Cc: Signed-off-by: Takashi Iwai --- sound/usb/mixer.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 8eb84c0..45cc0af 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -715,8 +715,9 @@ static int check_input_term(struct mixer_build *state, int id, struct usb_audio_ case UAC2_CLOCK_SELECTOR: { struct uac_selector_unit_descriptor *d = p1; /* call recursively to retrieve the channel info */ - if (check_input_term(state, d->baSourceID[0], term) < 0) - return -ENODEV; + err = check_input_term(state, d->baSourceID[0], term); + if (err < 0) + return err; term->type = d->bDescriptorSubtype << 16; /* virtual type */ term->id = id; term->name = uac_selector_unit_iSelector(d); @@ -1357,8 +1358,9 @@ static int parse_audio_feature_unit(struct mixer_build *state, int unitid, void return err; /* determine the input source type and name */ - if (check_input_term(state, hdr->bSourceID, &iterm) < 0) - return -EINVAL; + err = check_input_term(state, hdr->bSourceID, &iterm); + if (err < 0) + return err; master_bits = snd_usb_combine_bytes(bmaControls, csize); /* master configuration quirks */ -- cgit v1.1 From 83ea5d18d74f032a760fecde78c0210f66f7f70c Mon Sep 17 00:00:00 2001 From: Daniel Mack Date: Tue, 19 Mar 2013 21:09:25 +0100 Subject: ALSA: snd-usb: mixer: ignore -EINVAL in snd_usb_mixer_controls() Creation of individual mixer controls may fail, but that shouldn't cause the entire mixer creation to fail. Even worse, if the mixer creation fails, that will error out the entire device probing. All the functions called by parse_audio_unit() should return -EINVAL if they find descriptors that are unsupported or believed to be malformed, so we can safely handle this error code as a non-fatal condition in snd_usb_mixer_controls(). That fixes a long standing bug which is commonly worked around by adding quirks which make the driver ignore entire interfaces. Some of them might now be unnecessary. Signed-off-by: Daniel Mack Reported-and-tested-by: Rodolfo Thomazelli Cc: Signed-off-by: Takashi Iwai --- sound/usb/mixer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c index 45cc0af..ca4739c 100644 --- a/sound/usb/mixer.c +++ b/sound/usb/mixer.c @@ -2123,7 +2123,7 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) state.oterm.type = le16_to_cpu(desc->wTerminalType); state.oterm.name = desc->iTerminal; err = parse_audio_unit(&state, desc->bSourceID); - if (err < 0) + if (err < 0 && err != -EINVAL) return err; } else { /* UAC_VERSION_2 */ struct uac2_output_terminal_descriptor *desc = p; @@ -2135,12 +2135,12 @@ static int snd_usb_mixer_controls(struct usb_mixer_interface *mixer) state.oterm.type = le16_to_cpu(desc->wTerminalType); state.oterm.name = desc->iTerminal; err = parse_audio_unit(&state, desc->bSourceID); - if (err < 0) + if (err < 0 && err != -EINVAL) return err; /* for UAC2, use the same approach to also add the clock selectors */ err = parse_audio_unit(&state, desc->bCSourceID); - if (err < 0) + if (err < 0 && err != -EINVAL) return err; } } -- cgit v1.1 From 5830daf8174d7ea8df2621f8dbede3096bb659b5 Mon Sep 17 00:00:00 2001 From: Vikas Sajjan Date: Wed, 27 Feb 2013 16:02:58 +0530 Subject: drm/exynos: modify the compatible string for exynos fimd modified compatible string for exynos4 fimd as "exynos4210-fimd" and exynos5 fimd as "exynos5250-fimd" to stick to the rule that compatible value should be named after first specific SoC model in which this particular IP version was included as discussed at https://patchwork.kernel.org/patch/2144861/ Signed-off-by: Vikas Sajjan Acked-by: Joonyoung Shim Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_fimd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 36493ce..549cb7d 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -109,9 +109,9 @@ struct fimd_context { #ifdef CONFIG_OF static const struct of_device_id fimd_driver_dt_match[] = { - { .compatible = "samsung,exynos4-fimd", + { .compatible = "samsung,exynos4210-fimd", .data = &exynos4_fimd_driver_data }, - { .compatible = "samsung,exynos5-fimd", + { .compatible = "samsung,exynos5250-fimd", .data = &exynos5_fimd_driver_data }, {}, }; -- cgit v1.1 From 9800935a215ddf278da4860f59b4d29d2f429152 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Sat, 2 Mar 2013 15:06:24 +0530 Subject: drm/exynos: Make mixer_check_timing static Fixes the following sparse warning: drivers/gpu/drm/exynos/exynos_mixer.c:821:5: warning: symbol 'mixer_check_timing' was not declared. Should it be static? Signed-off-by: Sachin Kamat Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_mixer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index e919aba..2f4f72f 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -818,7 +818,7 @@ static void mixer_win_disable(void *ctx, int win) mixer_ctx->win_data[win].enabled = false; } -int mixer_check_timing(void *ctx, struct fb_videomode *timing) +static int mixer_check_timing(void *ctx, struct fb_videomode *timing) { struct mixer_context *mixer_ctx = ctx; u32 w, h; -- cgit v1.1 From 0f10cf1463c6fc02a9e85bf098ef3c215d94b1e3 Mon Sep 17 00:00:00 2001 From: Leela Krishna Amudala Date: Thu, 7 Mar 2013 23:28:52 -0500 Subject: drm/exynos: fimd: calculate the correct address offset Calculate the correct address offset values for alpha and color key control registers based on exynos4 and exynos5 user manuals. Also remove VIDOSD_C_SIZE_W0 macro and fix comments about registers for size and alpha. Signed-off-by: Leela Krishna Amudala Acked-by: Joonyoung Shim Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_fimd.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c index 549cb7d..98cc147 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c @@ -38,11 +38,12 @@ /* position control register for hardware window 0, 2 ~ 4.*/ #define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16) #define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16) -/* size control register for hardware window 0. */ -#define VIDOSD_C_SIZE_W0 (VIDOSD_BASE + 0x08) -/* alpha control register for hardware window 1 ~ 4. */ -#define VIDOSD_C(win) (VIDOSD_BASE + 0x18 + (win) * 16) -/* size control register for hardware window 1 ~ 4. */ +/* + * size control register for hardware windows 0 and alpha control register + * for hardware windows 1 ~ 4 + */ +#define VIDOSD_C(win) (VIDOSD_BASE + 0x08 + (win) * 16) +/* size control register for hardware windows 1 ~ 2. */ #define VIDOSD_D(win) (VIDOSD_BASE + 0x0C + (win) * 16) #define VIDWx_BUF_START(win, buf) (VIDW_BUF_START(buf) + (win) * 8) @@ -50,9 +51,9 @@ #define VIDWx_BUF_SIZE(win, buf) (VIDW_BUF_SIZE(buf) + (win) * 4) /* color key control register for hardware window 1 ~ 4. */ -#define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + (x * 8)) +#define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + ((x - 1) * 8)) /* color key value register for hardware window 1 ~ 4. */ -#define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + (x * 8)) +#define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + ((x - 1) * 8)) /* FIMD has totally five hardware windows. */ #define WINDOWS_NR 5 @@ -581,7 +582,7 @@ static void fimd_win_commit(struct device *dev, int zpos) if (win != 3 && win != 4) { u32 offset = VIDOSD_D(win); if (win == 0) - offset = VIDOSD_C_SIZE_W0; + offset = VIDOSD_C(win); val = win_data->ovl_width * win_data->ovl_height; writel(val, ctx->regs + offset); -- cgit v1.1 From e2779e1698c7dbf36a02a9922d216b4db0e212b8 Mon Sep 17 00:00:00 2001 From: Alexandru Gheorghiu Date: Mon, 11 Mar 2013 21:25:22 +0200 Subject: drm/exynos: Replaced kzalloc & memcpy with kmemdup Replaced calls to kzalloc followed by memcpy with call to kmemdup. Patch found using coccinelle. Signed-off-by: Alexandru Gheorghiu Acked-by: Seung-Woo Kim Signed-off-by: Inki Dae --- drivers/gpu/drm/exynos/exynos_drm_vidi.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_vidi.c b/drivers/gpu/drm/exynos/exynos_drm_vidi.c index 13ccbd4..9504b0c 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_vidi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_vidi.c @@ -117,13 +117,12 @@ static struct edid *vidi_get_edid(struct device *dev, } edid_len = (1 + ctx->raw_edid->extensions) * EDID_LENGTH; - edid = kzalloc(edid_len, GFP_KERNEL); + edid = kmemdup(ctx->raw_edid, edid_len, GFP_KERNEL); if (!edid) { DRM_DEBUG_KMS("failed to allocate edid\n"); return ERR_PTR(-ENOMEM); } - memcpy(edid, ctx->raw_edid, edid_len); return edid; } @@ -563,12 +562,11 @@ int vidi_connection_ioctl(struct drm_device *drm_dev, void *data, return -EINVAL; } edid_len = (1 + raw_edid->extensions) * EDID_LENGTH; - ctx->raw_edid = kzalloc(edid_len, GFP_KERNEL); + ctx->raw_edid = kmemdup(raw_edid, edid_len, GFP_KERNEL); if (!ctx->raw_edid) { DRM_DEBUG_KMS("failed to allocate raw_edid.\n"); return -ENOMEM; } - memcpy(ctx->raw_edid, raw_edid, edid_len); } else { /* * with connection = 0, free raw_edid -- cgit v1.1 From 067ed3311f7961bef67551fa5115dbadf9a035f4 Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Mon, 11 Mar 2013 19:48:05 +0900 Subject: drm/exynos: Fix error routine to getting dma addr. This patch fixes error routine when g2d_userptr_get_dma_add is failed. When sg_alloc_table_from_pages() is failed, it doesn't call sg_free_table() anymore. Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 3b0da03..28b7112 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -450,7 +450,7 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev, DMA_BIDIRECTIONAL); if (ret < 0) { DRM_ERROR("failed to map sgt with dma region.\n"); - goto err_free_sgt; + goto err_sg_free_table; } g2d_userptr->dma_addr = sgt->sgl[0].dma_address; @@ -467,8 +467,10 @@ static dma_addr_t *g2d_userptr_get_dma_addr(struct drm_device *drm_dev, return &g2d_userptr->dma_addr; -err_free_sgt: +err_sg_free_table: sg_free_table(sgt); + +err_free_sgt: kfree(sgt); sgt = NULL; -- cgit v1.1 From 5efc1d1b53ba60a89ce8269880ed02eddecd1add Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Mon, 11 Mar 2013 19:56:17 +0900 Subject: drm/exynos: clear node object type at gem unmap This patch clears node object type in G2D unmap cmdlist. The obj_type of cmdlist node has to be cleared in g2d_unmap_cmdlist_gem() so that the node can be reused in g2d_map_cmdlist_gem(). Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 28b7112..095520f 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -576,6 +576,7 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, false); node->handles[i] = 0; + node->obj_type[i] = 0; } node->map_nr = 0; -- cgit v1.1 From 7ad018140cc9c0e3388243e524f8410e5f174658 Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Wed, 13 Mar 2013 16:44:37 +0900 Subject: drm/exynos: Fix G2D core malfunctioning issue This patch fixes G2D core malfunctioning issue once g2d dma is started. Without 'DMA_HOLD_CMD_REG' register setting, there is only one interrupt after the execution to all command lists have been completed. And that induces watchdog. So this patch sets 'LIST_HOLD' command to the register so that command execution interrupt can be occured whenever each command list execution is finished. Changelog v2: - Consider for interrupt setup to each command list and all command lists And correct typo. Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 095520f..1ff1144 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -82,7 +82,7 @@ #define G2D_DMA_LIST_DONE_COUNT_OFFSET 17 /* G2D_DMA_HOLD_CMD */ -#define G2D_USET_HOLD (1 << 2) +#define G2D_USER_HOLD (1 << 2) #define G2D_LIST_HOLD (1 << 1) #define G2D_BITBLT_HOLD (1 << 0) @@ -592,10 +592,6 @@ static void g2d_dma_start(struct g2d_data *g2d, pm_runtime_get_sync(g2d->dev); clk_enable(g2d->gate_clk); - /* interrupt enable */ - writel_relaxed(G2D_INTEN_ACF | G2D_INTEN_UCF | G2D_INTEN_GCF, - g2d->regs + G2D_INTEN); - writel_relaxed(node->dma_addr, g2d->regs + G2D_DMA_SFR_BASE_ADDR); writel_relaxed(G2D_DMA_START, g2d->regs + G2D_DMA_COMMAND); } @@ -863,9 +859,23 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data, cmdlist->data[cmdlist->last++] = G2D_SRC_BASE_ADDR; cmdlist->data[cmdlist->last++] = 0; + /* + * 'LIST_HOLD' command should be set to the DMA_HOLD_CMD_REG + * and GCF bit should be set to INTEN register if user wants + * G2D interrupt event once current command list execution is + * finished. + * Otherwise only ACF bit should be set to INTEN register so + * that one interrupt is occured after all command lists + * have been completed. + */ if (node->event) { + cmdlist->data[cmdlist->last++] = G2D_INTEN; + cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF | G2D_INTEN_GCF; cmdlist->data[cmdlist->last++] = G2D_DMA_HOLD_CMD; cmdlist->data[cmdlist->last++] = G2D_LIST_HOLD; + } else { + cmdlist->data[cmdlist->last++] = G2D_INTEN; + cmdlist->data[cmdlist->last++] = G2D_INTEN_ACF; } /* Check size of cmdlist: last 2 is about G2D_BITBLT_START */ -- cgit v1.1 From f3d2fc4a7315d8dd39e6fb37122a3aa08fea6e62 Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Wed, 13 Mar 2013 16:55:48 +0900 Subject: drm/exynos: Clean up some G2D codes for readability This patch just cleans up G2D codes for readability. For this, it changes the member of g2d_cmdlist_node, obj_type into buf_type. Changelog v2: - Revert irrelevant codes. Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 1ff1144..7c1aac3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -131,13 +131,12 @@ struct g2d_cmdlist_userptr { bool in_pool; bool out_of_list; }; - struct g2d_cmdlist_node { struct list_head list; struct g2d_cmdlist *cmdlist; unsigned int map_nr; unsigned long handles[MAX_BUF_ADDR_NR]; - unsigned int obj_type[MAX_BUF_ADDR_NR]; + unsigned int buf_type[MAX_BUF_ADDR_NR]; dma_addr_t dma_addr; struct drm_exynos_pending_g2d_event *event; @@ -524,7 +523,7 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d, offset = cmdlist->last - (i * 2 + 1); handle = cmdlist->data[offset]; - if (node->obj_type[i] == BUF_TYPE_GEM) { + if (node->buf_type[i] == BUF_TYPE_GEM) { addr = exynos_drm_gem_get_dma_addr(drm_dev, handle, file); if (IS_ERR(addr)) { @@ -568,7 +567,7 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, for (i = 0; i < node->map_nr; i++) { unsigned long handle = node->handles[i]; - if (node->obj_type[i] == BUF_TYPE_GEM) + if (node->buf_type[i] == BUF_TYPE_GEM) exynos_drm_gem_put_dma_addr(subdrv->drm_dev, handle, filp); else @@ -576,7 +575,7 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, false); node->handles[i] = 0; - node->obj_type[i] = 0; + node->buf_type[i] = 0; } node->map_nr = 0; @@ -642,7 +641,6 @@ static void g2d_runqueue_worker(struct work_struct *work) struct g2d_data *g2d = container_of(work, struct g2d_data, runqueue_work); - mutex_lock(&g2d->runqueue_mutex); clk_disable(g2d->gate_clk); pm_runtime_put_sync(g2d->dev); @@ -730,7 +728,7 @@ static int g2d_check_reg_offset(struct device *dev, reg_offset = (cmdlist->data[index] & ~0x7fffffff) >> 31; if (reg_offset) { - node->obj_type[i] = BUF_TYPE_USERPTR; + node->buf_type[i] = BUF_TYPE_USERPTR; cmdlist->data[index] &= ~G2D_BUF_USERPTR; } } @@ -752,8 +750,8 @@ static int g2d_check_reg_offset(struct device *dev, if (!for_addr) goto err; - if (node->obj_type[i] != BUF_TYPE_USERPTR) - node->obj_type[i] = BUF_TYPE_GEM; + if (node->buf_type[i] != BUF_TYPE_USERPTR) + node->buf_type[i] = BUF_TYPE_GEM; break; default: if (for_addr) -- cgit v1.1 From 9963cb6ef9e6f925617b3c74f0700bf5fbee9a1d Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Wed, 13 Mar 2013 17:10:08 +0900 Subject: drm/exynos: Deal with g2d buffer info more efficiently This patch adds g2d_buf_info structure and buffer relevant variables moves into the g2d_buf_info to manage g2d buffer information more efficiently. Changelog v2: - Fix merge conflict. Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 160 ++++++++++++++++++++++++-------- 1 file changed, 123 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 7c1aac3..1a022dc 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -96,8 +96,6 @@ #define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM) #define G2D_CMDLIST_DATA_NUM (G2D_CMDLIST_SIZE / sizeof(u32) - 2) -#define MAX_BUF_ADDR_NR 6 - /* maximum buffer pool size of userptr is 64MB as default */ #define MAX_POOL (64 * 1024 * 1024) @@ -106,6 +104,17 @@ enum { BUF_TYPE_USERPTR, }; +enum g2d_reg_type { + REG_TYPE_NONE = -1, + REG_TYPE_SRC, + REG_TYPE_SRC_PLANE2, + REG_TYPE_DST, + REG_TYPE_DST_PLANE2, + REG_TYPE_PAT, + REG_TYPE_MSK, + MAX_REG_TYPE_NR +}; + /* cmdlist data structure */ struct g2d_cmdlist { u32 head; @@ -113,6 +122,22 @@ struct g2d_cmdlist { u32 last; /* last data offset */ }; +/* + * A structure of buffer information + * + * @map_nr: manages the number of mapped buffers + * @reg_types: stores regitster type in the order of requested command + * @handles: stores buffer handle in its reg_type position + * @types: stores buffer type in its reg_type position + * + */ +struct g2d_buf_info { + unsigned int map_nr; + enum g2d_reg_type reg_types[MAX_REG_TYPE_NR]; + unsigned long handles[MAX_REG_TYPE_NR]; + unsigned int types[MAX_REG_TYPE_NR]; +}; + struct drm_exynos_pending_g2d_event { struct drm_pending_event base; struct drm_exynos_g2d_event event; @@ -134,10 +159,8 @@ struct g2d_cmdlist_userptr { struct g2d_cmdlist_node { struct list_head list; struct g2d_cmdlist *cmdlist; - unsigned int map_nr; - unsigned long handles[MAX_BUF_ADDR_NR]; - unsigned int buf_type[MAX_BUF_ADDR_NR]; dma_addr_t dma_addr; + struct g2d_buf_info buf_info; struct drm_exynos_pending_g2d_event *event; }; @@ -187,6 +210,7 @@ static int g2d_init_cmdlist(struct g2d_data *g2d) struct exynos_drm_subdrv *subdrv = &g2d->subdrv; int nr; int ret; + struct g2d_buf_info *buf_info; init_dma_attrs(&g2d->cmdlist_dma_attrs); dma_set_attr(DMA_ATTR_WRITE_COMBINE, &g2d->cmdlist_dma_attrs); @@ -208,11 +232,17 @@ static int g2d_init_cmdlist(struct g2d_data *g2d) } for (nr = 0; nr < G2D_CMDLIST_NUM; nr++) { + unsigned int i; + node[nr].cmdlist = g2d->cmdlist_pool_virt + nr * G2D_CMDLIST_SIZE; node[nr].dma_addr = g2d->cmdlist_pool + nr * G2D_CMDLIST_SIZE; + buf_info = &node[nr].buf_info; + for (i = 0; i < MAX_REG_TYPE_NR; i++) + buf_info->reg_types[i] = REG_TYPE_NONE; + list_add_tail(&node[nr].list, &g2d->free_cmdlist); } @@ -507,36 +537,80 @@ static void g2d_userptr_free_all(struct drm_device *drm_dev, g2d->current_pool = 0; } +static enum g2d_reg_type g2d_get_reg_type(int reg_offset) +{ + enum g2d_reg_type reg_type; + + switch (reg_offset) { + case G2D_SRC_BASE_ADDR: + reg_type = REG_TYPE_SRC; + break; + case G2D_SRC_PLANE2_BASE_ADDR: + reg_type = REG_TYPE_SRC_PLANE2; + break; + case G2D_DST_BASE_ADDR: + reg_type = REG_TYPE_DST; + break; + case G2D_DST_PLANE2_BASE_ADDR: + reg_type = REG_TYPE_DST_PLANE2; + break; + case G2D_PAT_BASE_ADDR: + reg_type = REG_TYPE_PAT; + break; + case G2D_MSK_BASE_ADDR: + reg_type = REG_TYPE_MSK; + break; + default: + reg_type = REG_TYPE_NONE; + DRM_ERROR("Unknown register offset![%d]\n", reg_offset); + break; + }; + + return reg_type; +} + static int g2d_map_cmdlist_gem(struct g2d_data *g2d, struct g2d_cmdlist_node *node, struct drm_device *drm_dev, struct drm_file *file) { struct g2d_cmdlist *cmdlist = node->cmdlist; + struct g2d_buf_info *buf_info = &node->buf_info; int offset; + int ret; int i; - for (i = 0; i < node->map_nr; i++) { + for (i = 0; i < buf_info->map_nr; i++) { + enum g2d_reg_type reg_type; + int reg_pos; unsigned long handle; dma_addr_t *addr; - offset = cmdlist->last - (i * 2 + 1); - handle = cmdlist->data[offset]; + reg_pos = cmdlist->last - 2 * (i + 1); + + offset = cmdlist->data[reg_pos]; + handle = cmdlist->data[reg_pos + 1]; + + reg_type = g2d_get_reg_type(offset); + if (reg_type == REG_TYPE_NONE) { + ret = -EFAULT; + goto err; + } - if (node->buf_type[i] == BUF_TYPE_GEM) { + if (buf_info->types[reg_type] == BUF_TYPE_GEM) { addr = exynos_drm_gem_get_dma_addr(drm_dev, handle, file); if (IS_ERR(addr)) { - node->map_nr = i; - return -EFAULT; + ret = -EFAULT; + goto err; } } else { struct drm_exynos_g2d_userptr g2d_userptr; if (copy_from_user(&g2d_userptr, (void __user *)handle, sizeof(struct drm_exynos_g2d_userptr))) { - node->map_nr = i; - return -EFAULT; + ret = -EFAULT; + goto err; } addr = g2d_userptr_get_dma_addr(drm_dev, @@ -545,16 +619,21 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d, file, &handle); if (IS_ERR(addr)) { - node->map_nr = i; - return -EFAULT; + ret = -EFAULT; + goto err; } } - cmdlist->data[offset] = *addr; - node->handles[i] = handle; + cmdlist->data[reg_pos + 1] = *addr; + buf_info->reg_types[i] = reg_type; + buf_info->handles[reg_type] = handle; } return 0; + +err: + buf_info->map_nr = i; + return ret; } static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, @@ -562,23 +641,30 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, struct drm_file *filp) { struct exynos_drm_subdrv *subdrv = &g2d->subdrv; + struct g2d_buf_info *buf_info = &node->buf_info; int i; - for (i = 0; i < node->map_nr; i++) { - unsigned long handle = node->handles[i]; + for (i = 0; i < buf_info->map_nr; i++) { + enum g2d_reg_type reg_type; + unsigned long handle; + + reg_type = buf_info->reg_types[i]; - if (node->buf_type[i] == BUF_TYPE_GEM) + handle = buf_info->handles[reg_type]; + + if (buf_info->types[reg_type] == BUF_TYPE_GEM) exynos_drm_gem_put_dma_addr(subdrv->drm_dev, handle, filp); else g2d_userptr_put_dma_addr(subdrv->drm_dev, handle, false); - node->handles[i] = 0; - node->buf_type[i] = 0; + buf_info->reg_types[i] = REG_TYPE_NONE; + buf_info->handles[reg_type] = 0; + buf_info->types[reg_type] = 0; } - node->map_nr = 0; + buf_info->map_nr = 0; } static void g2d_dma_start(struct g2d_data *g2d, @@ -721,20 +807,12 @@ static int g2d_check_reg_offset(struct device *dev, int i; for (i = 0; i < nr; i++) { - index = cmdlist->last - 2 * (i + 1); + struct g2d_buf_info *buf_info = &node->buf_info; + enum g2d_reg_type reg_type; - if (for_addr) { - /* check userptr buffer type. */ - reg_offset = (cmdlist->data[index] & - ~0x7fffffff) >> 31; - if (reg_offset) { - node->buf_type[i] = BUF_TYPE_USERPTR; - cmdlist->data[index] &= ~G2D_BUF_USERPTR; - } - } + index = cmdlist->last - 2 * (i + 1); reg_offset = cmdlist->data[index] & ~0xfffff000; - if (reg_offset < G2D_VALID_START || reg_offset > G2D_VALID_END) goto err; if (reg_offset % 4) @@ -750,8 +828,16 @@ static int g2d_check_reg_offset(struct device *dev, if (!for_addr) goto err; - if (node->buf_type[i] != BUF_TYPE_USERPTR) - node->buf_type[i] = BUF_TYPE_GEM; + reg_type = g2d_get_reg_type(reg_offset); + if (reg_type == REG_TYPE_NONE) + goto err; + + /* check userptr buffer type. */ + if ((cmdlist->data[index] & ~0x7fffffff) >> 31) { + buf_info->types[reg_type] = BUF_TYPE_USERPTR; + cmdlist->data[index] &= ~G2D_BUF_USERPTR; + } else + buf_info->types[reg_type] = BUF_TYPE_GEM; break; default: if (for_addr) @@ -898,7 +984,7 @@ int exynos_g2d_set_cmdlist_ioctl(struct drm_device *drm_dev, void *data, if (ret < 0) goto err_free_event; - node->map_nr = req->cmd_buf_nr; + node->buf_info.map_nr = req->cmd_buf_nr; if (req->cmd_buf_nr) { struct drm_exynos_g2d_cmd *cmd_buf; -- cgit v1.1 From a4f19aaab3e69f9d15cc995e3378d27c8ef4f780 Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Mon, 11 Mar 2013 21:15:59 +0900 Subject: drm/exynos: Add a new function to get gem buffer size This patch adds a new function to get gem buffer size. And this funtion could be used for g2d driver or others can get gem buffer size to check if the buffer is valid or not. Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 21 +++++++++++++++++++++ drivers/gpu/drm/exynos/exynos_drm_gem.h | 5 +++++ 2 files changed, 26 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 67e17ce..0e6fe00 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -164,6 +164,27 @@ out: exynos_gem_obj = NULL; } +unsigned long exynos_drm_gem_get_size(struct drm_device *dev, + unsigned int gem_handle, + struct drm_file *file_priv) +{ + struct exynos_drm_gem_obj *exynos_gem_obj; + struct drm_gem_object *obj; + + obj = drm_gem_object_lookup(dev, file_priv, gem_handle); + if (!obj) { + DRM_ERROR("failed to lookup gem object.\n"); + return 0; + } + + exynos_gem_obj = to_exynos_gem_obj(obj); + + drm_gem_object_unreference_unlocked(obj); + + return exynos_gem_obj->buffer->size; +} + + struct exynos_drm_gem_obj *exynos_drm_gem_init(struct drm_device *dev, unsigned long size) { diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h index 35ebac4..468766b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.h +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h @@ -130,6 +130,11 @@ int exynos_drm_gem_userptr_ioctl(struct drm_device *dev, void *data, int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); +/* get buffer size to gem handle. */ +unsigned long exynos_drm_gem_get_size(struct drm_device *dev, + unsigned int gem_handle, + struct drm_file *file_priv); + /* initialize gem object. */ int exynos_drm_gem_init_object(struct drm_gem_object *obj); -- cgit v1.1 From 2dec17c70e7567f226331c26d8daa0c16d3e7e6d Mon Sep 17 00:00:00 2001 From: YoungJun Cho Date: Mon, 11 Mar 2013 21:17:52 +0900 Subject: drm/exynos: Check g2d cmd list for g2d restrictions This patch checks command list from user for g2d restrictions. For now, g2d driver wasn't considered for G2D hardware restrictions properly. The below is the restrictions to G2D hardware and this patch considers them. - width or height value in the command list has to be in valid range (1 to 8000 pixels) - The requested area should be less than buffer size. - right has to be bigger than left. - bottom has to be bigger than top. Changelog v2: - Fix merge conflict. Signed-off-by: YoungJun Cho Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_g2d.c | 183 ++++++++++++++++++++++++++++++++ 1 file changed, 183 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_g2d.c b/drivers/gpu/drm/exynos/exynos_drm_g2d.c index 1a022dc..47a493c 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_g2d.c +++ b/drivers/gpu/drm/exynos/exynos_drm_g2d.c @@ -48,8 +48,14 @@ /* registers for base address */ #define G2D_SRC_BASE_ADDR 0x0304 +#define G2D_SRC_COLOR_MODE 0x030C +#define G2D_SRC_LEFT_TOP 0x0310 +#define G2D_SRC_RIGHT_BOTTOM 0x0314 #define G2D_SRC_PLANE2_BASE_ADDR 0x0318 #define G2D_DST_BASE_ADDR 0x0404 +#define G2D_DST_COLOR_MODE 0x040C +#define G2D_DST_LEFT_TOP 0x0410 +#define G2D_DST_RIGHT_BOTTOM 0x0414 #define G2D_DST_PLANE2_BASE_ADDR 0x0418 #define G2D_PAT_BASE_ADDR 0x0500 #define G2D_MSK_BASE_ADDR 0x0520 @@ -91,6 +97,22 @@ #define G2D_START_NHOLT (1 << 1) #define G2D_START_BITBLT (1 << 0) +/* buffer color format */ +#define G2D_FMT_XRGB8888 0 +#define G2D_FMT_ARGB8888 1 +#define G2D_FMT_RGB565 2 +#define G2D_FMT_XRGB1555 3 +#define G2D_FMT_ARGB1555 4 +#define G2D_FMT_XRGB4444 5 +#define G2D_FMT_ARGB4444 6 +#define G2D_FMT_PACKED_RGB888 7 +#define G2D_FMT_A8 11 +#define G2D_FMT_L8 12 + +/* buffer valid length */ +#define G2D_LEN_MIN 1 +#define G2D_LEN_MAX 8000 + #define G2D_CMDLIST_SIZE (PAGE_SIZE / 4) #define G2D_CMDLIST_NUM 64 #define G2D_CMDLIST_POOL_SIZE (G2D_CMDLIST_SIZE * G2D_CMDLIST_NUM) @@ -123,12 +145,31 @@ struct g2d_cmdlist { }; /* + * A structure of buffer description + * + * @format: color format + * @left_x: the x coordinates of left top corner + * @top_y: the y coordinates of left top corner + * @right_x: the x coordinates of right bottom corner + * @bottom_y: the y coordinates of right bottom corner + * + */ +struct g2d_buf_desc { + unsigned int format; + unsigned int left_x; + unsigned int top_y; + unsigned int right_x; + unsigned int bottom_y; +}; + +/* * A structure of buffer information * * @map_nr: manages the number of mapped buffers * @reg_types: stores regitster type in the order of requested command * @handles: stores buffer handle in its reg_type position * @types: stores buffer type in its reg_type position + * @descs: stores buffer description in its reg_type position * */ struct g2d_buf_info { @@ -136,6 +177,7 @@ struct g2d_buf_info { enum g2d_reg_type reg_types[MAX_REG_TYPE_NR]; unsigned long handles[MAX_REG_TYPE_NR]; unsigned int types[MAX_REG_TYPE_NR]; + struct g2d_buf_desc descs[MAX_REG_TYPE_NR]; }; struct drm_exynos_pending_g2d_event { @@ -543,12 +585,18 @@ static enum g2d_reg_type g2d_get_reg_type(int reg_offset) switch (reg_offset) { case G2D_SRC_BASE_ADDR: + case G2D_SRC_COLOR_MODE: + case G2D_SRC_LEFT_TOP: + case G2D_SRC_RIGHT_BOTTOM: reg_type = REG_TYPE_SRC; break; case G2D_SRC_PLANE2_BASE_ADDR: reg_type = REG_TYPE_SRC_PLANE2; break; case G2D_DST_BASE_ADDR: + case G2D_DST_COLOR_MODE: + case G2D_DST_LEFT_TOP: + case G2D_DST_RIGHT_BOTTOM: reg_type = REG_TYPE_DST; break; case G2D_DST_PLANE2_BASE_ADDR: @@ -569,6 +617,69 @@ static enum g2d_reg_type g2d_get_reg_type(int reg_offset) return reg_type; } +static unsigned long g2d_get_buf_bpp(unsigned int format) +{ + unsigned long bpp; + + switch (format) { + case G2D_FMT_XRGB8888: + case G2D_FMT_ARGB8888: + bpp = 4; + break; + case G2D_FMT_RGB565: + case G2D_FMT_XRGB1555: + case G2D_FMT_ARGB1555: + case G2D_FMT_XRGB4444: + case G2D_FMT_ARGB4444: + bpp = 2; + break; + case G2D_FMT_PACKED_RGB888: + bpp = 3; + break; + default: + bpp = 1; + break; + } + + return bpp; +} + +static bool g2d_check_buf_desc_is_valid(struct g2d_buf_desc *buf_desc, + enum g2d_reg_type reg_type, + unsigned long size) +{ + unsigned int width, height; + unsigned long area; + + /* + * check source and destination buffers only. + * so the others are always valid. + */ + if (reg_type != REG_TYPE_SRC && reg_type != REG_TYPE_DST) + return true; + + width = buf_desc->right_x - buf_desc->left_x; + if (width < G2D_LEN_MIN || width > G2D_LEN_MAX) { + DRM_ERROR("width[%u] is out of range!\n", width); + return false; + } + + height = buf_desc->bottom_y - buf_desc->top_y; + if (height < G2D_LEN_MIN || height > G2D_LEN_MAX) { + DRM_ERROR("height[%u] is out of range!\n", height); + return false; + } + + area = (unsigned long)width * (unsigned long)height * + g2d_get_buf_bpp(buf_desc->format); + if (area > size) { + DRM_ERROR("area[%lu] is out of range[%lu]!\n", area, size); + return false; + } + + return true; +} + static int g2d_map_cmdlist_gem(struct g2d_data *g2d, struct g2d_cmdlist_node *node, struct drm_device *drm_dev, @@ -581,6 +692,7 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d, int i; for (i = 0; i < buf_info->map_nr; i++) { + struct g2d_buf_desc *buf_desc; enum g2d_reg_type reg_type; int reg_pos; unsigned long handle; @@ -597,7 +709,23 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d, goto err; } + buf_desc = &buf_info->descs[reg_type]; + if (buf_info->types[reg_type] == BUF_TYPE_GEM) { + unsigned long size; + + size = exynos_drm_gem_get_size(drm_dev, handle, file); + if (!size) { + ret = -EFAULT; + goto err; + } + + if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type, + size)) { + ret = -EFAULT; + goto err; + } + addr = exynos_drm_gem_get_dma_addr(drm_dev, handle, file); if (IS_ERR(addr)) { @@ -613,6 +741,12 @@ static int g2d_map_cmdlist_gem(struct g2d_data *g2d, goto err; } + if (!g2d_check_buf_desc_is_valid(buf_desc, reg_type, + g2d_userptr.size)) { + ret = -EFAULT; + goto err; + } + addr = g2d_userptr_get_dma_addr(drm_dev, g2d_userptr.userptr, g2d_userptr.size, @@ -645,11 +779,13 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, int i; for (i = 0; i < buf_info->map_nr; i++) { + struct g2d_buf_desc *buf_desc; enum g2d_reg_type reg_type; unsigned long handle; reg_type = buf_info->reg_types[i]; + buf_desc = &buf_info->descs[reg_type]; handle = buf_info->handles[reg_type]; if (buf_info->types[reg_type] == BUF_TYPE_GEM) @@ -662,6 +798,7 @@ static void g2d_unmap_cmdlist_gem(struct g2d_data *g2d, buf_info->reg_types[i] = REG_TYPE_NONE; buf_info->handles[reg_type] = 0; buf_info->types[reg_type] = 0; + memset(buf_desc, 0x00, sizeof(*buf_desc)); } buf_info->map_nr = 0; @@ -808,7 +945,9 @@ static int g2d_check_reg_offset(struct device *dev, for (i = 0; i < nr; i++) { struct g2d_buf_info *buf_info = &node->buf_info; + struct g2d_buf_desc *buf_desc; enum g2d_reg_type reg_type; + unsigned long value; index = cmdlist->last - 2 * (i + 1); @@ -839,6 +978,50 @@ static int g2d_check_reg_offset(struct device *dev, } else buf_info->types[reg_type] = BUF_TYPE_GEM; break; + case G2D_SRC_COLOR_MODE: + case G2D_DST_COLOR_MODE: + if (for_addr) + goto err; + + reg_type = g2d_get_reg_type(reg_offset); + if (reg_type == REG_TYPE_NONE) + goto err; + + buf_desc = &buf_info->descs[reg_type]; + value = cmdlist->data[index + 1]; + + buf_desc->format = value & 0xf; + break; + case G2D_SRC_LEFT_TOP: + case G2D_DST_LEFT_TOP: + if (for_addr) + goto err; + + reg_type = g2d_get_reg_type(reg_offset); + if (reg_type == REG_TYPE_NONE) + goto err; + + buf_desc = &buf_info->descs[reg_type]; + value = cmdlist->data[index + 1]; + + buf_desc->left_x = value & 0x1fff; + buf_desc->top_y = (value & 0x1fff0000) >> 16; + break; + case G2D_SRC_RIGHT_BOTTOM: + case G2D_DST_RIGHT_BOTTOM: + if (for_addr) + goto err; + + reg_type = g2d_get_reg_type(reg_offset); + if (reg_type == REG_TYPE_NONE) + goto err; + + buf_desc = &buf_info->descs[reg_type]; + value = cmdlist->data[index + 1]; + + buf_desc->right_x = value & 0x1fff; + buf_desc->bottom_y = (value & 0x1fff0000) >> 16; + break; default: if (for_addr) goto err; -- cgit v1.1 From 367f3fcd9296977bc4689546f55c5f4a9c680e8d Mon Sep 17 00:00:00 2001 From: Vineet Gupta Date: Wed, 20 Mar 2013 16:53:14 +0530 Subject: ARC: Fix the typo in event identifier flags used by ptrace orig_r8_IS_EXCPN and orig_r8_IS_BRKPT were same values due to a copy/paste error. Although it looks bad and is wrong, it really doesn't affect gdb working. orig_r8_IS_BRKPT is the one relevant to debugging (breakpoints), since it is used to provide EFA vs. ERET to a ptrace "stop_pc" request. So when gdb has inserted a breakpoint, orig_r8_IS_BRKPT is already set, and anything else (i.e. orig_r8_IS_EXCPN) becoming same as it, really doesn't hurt gdb. The corollary case, could be nasty but nobody uses the ptrace "stop_pc" request in that case Signed-off-by: Vineet Gupta --- arch/arc/include/asm/entry.h | 2 +- arch/arc/include/asm/ptrace.h | 2 +- arch/arc/kernel/entry.S | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h index 23daa32..eb2ae53 100644 --- a/arch/arc/include/asm/entry.h +++ b/arch/arc/include/asm/entry.h @@ -415,7 +415,7 @@ *-------------------------------------------------------------*/ .macro SAVE_ALL_EXCEPTION marker - st \marker, [sp, 8] + st \marker, [sp, 8] /* orig_r8 */ st r0, [sp, 4] /* orig_r0, needed only for sys calls */ /* Restore r9 used to code the early prologue */ diff --git a/arch/arc/include/asm/ptrace.h b/arch/arc/include/asm/ptrace.h index 8ae783d..6179de7 100644 --- a/arch/arc/include/asm/ptrace.h +++ b/arch/arc/include/asm/ptrace.h @@ -123,7 +123,7 @@ static inline long regs_return_value(struct pt_regs *regs) #define orig_r8_IS_SCALL 0x0001 #define orig_r8_IS_SCALL_RESTARTED 0x0002 #define orig_r8_IS_BRKPT 0x0004 -#define orig_r8_IS_EXCPN 0x0004 +#define orig_r8_IS_EXCPN 0x0008 #define orig_r8_IS_IRQ1 0x0010 #define orig_r8_IS_IRQ2 0x0020 diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index b9d875a..91eeab8 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -452,7 +452,7 @@ tracesys: ; using ERET won't work since next-PC has already committed lr r12, [efa] GET_CURR_TASK_FIELD_PTR TASK_THREAD, r11 - st r12, [r11, THREAD_FAULT_ADDR] + st r12, [r11, THREAD_FAULT_ADDR] ; thread.fault_address ; PRE Sys Call Ptrace hook mov r0, sp ; pt_regs needed -- cgit v1.1 From 1ada47d9468fe3907f7f9e00179168f5e2f90803 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 20 Mar 2013 09:39:42 -0400 Subject: ext4: fix ext4_evict_inode() racing against workqueue processing code Commit 84c17543ab56 (ext4: move work from io_end to inode) triggered a regression when running xfstest #270 when the file system is mounted with dioread_nolock. The problem is that after ext4_evict_inode() calls ext4_ioend_wait(), this guarantees that last io_end structure has been freed, but it does not guarantee that the workqueue structure, which was moved into the inode by commit 84c17543ab56, is actually finished. Once ext4_flush_completed_IO() calls ext4_free_io_end() on CPU #1, this will allow ext4_ioend_wait() to return on CPU #2, at which point the evict_inode() codepath can race against the workqueue code on CPU #1 accessing EXT4_I(inode)->i_unwritten_work to find the next item of work to do. Fix this by calling cancel_work_sync() in ext4_ioend_wait(), which will be renamed ext4_ioend_shutdown(), since it is only used by ext4_evict_inode(). Also, move the call to ext4_ioend_shutdown() until after truncate_inode_pages() and filemap_write_and_wait() are called, to make sure all dirty pages have been written back and flushed from the page cache first. BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] cwq_activate_delayed_work+0x3b/0x7e *pdpt = 0000000030bc3001 *pde = 0000000000000000 Oops: 0000 [#1] SMP DEBUG_PAGEALLOC Modules linked in: Pid: 6, comm: kworker/u:0 Not tainted 3.8.0-rc3-00013-g84c1754-dirty #91 Bochs Bochs EIP: 0060:[] EFLAGS: 00010046 CPU: 0 EIP is at cwq_activate_delayed_work+0x3b/0x7e EAX: 00000000 EBX: 00000000 ECX: f505fe54 EDX: 00000000 ESI: ed5b697c EDI: 00000006 EBP: f64b7e8c ESP: f64b7e84 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 CR0: 8005003b CR2: 00000000 CR3: 30bc2000 CR4: 000006f0 DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000 DR6: ffff0ff0 DR7: 00000400 Process kworker/u:0 (pid: 6, ti=f64b6000 task=f64b4160 task.ti=f64b6000) Stack: f505fe00 00000006 f64b7e9c c01de3d7 f6435540 00000003 f64b7efc c01def1d f6435540 00000002 00000000 0000008a c16d0808 c040a10b c16d07d8 c16d08b0 f505fe00 c16d0780 00000000 00000000 ee153df4 c1ce4a30 c17d0e30 00000000 Call Trace: [] cwq_dec_nr_in_flight+0x71/0xfb [] process_one_work+0x5d8/0x637 [] ? ext4_end_bio+0x300/0x300 [] worker_thread+0x249/0x3ef [] kthread+0xd8/0xeb [] ? manage_workers+0x4bb/0x4bb [] ? trace_hardirqs_on+0x27/0x37 [] ret_from_kernel_thread+0x1b/0x28 [] ? __init_kthread_worker+0x71/0x71 Code: 01 83 15 ac ff 6c c1 00 31 db 89 c6 8b 00 a8 04 74 12 89 c3 30 db 83 05 b0 ff 6c c1 01 83 15 b4 ff 6c c1 00 89 f0 e8 42 ff ff ff <8b> 13 89 f0 83 05 b8 ff 6c c1 6c c1 00 31 c9 83 EIP: [] cwq_activate_delayed_work+0x3b/0x7e SS:ESP 0068:f64b7e84 CR2: 0000000000000000 ---[ end trace a1923229da53d8a4 ]--- Signed-off-by: "Theodore Ts'o" Cc: Jan Kara --- fs/ext4/ext4.h | 2 +- fs/ext4/inode.c | 4 ++-- fs/ext4/page-io.c | 12 +++++++++++- 3 files changed, 14 insertions(+), 4 deletions(-) diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 167ff56..3b83cd6 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2617,7 +2617,7 @@ extern int ext4_move_extents(struct file *o_filp, struct file *d_filp, extern int __init ext4_init_pageio(void); extern void ext4_add_complete_io(ext4_io_end_t *io_end); extern void ext4_exit_pageio(void); -extern void ext4_ioend_wait(struct inode *); +extern void ext4_ioend_shutdown(struct inode *); extern void ext4_free_io_end(ext4_io_end_t *io); extern ext4_io_end_t *ext4_init_io_end(struct inode *inode, gfp_t flags); extern void ext4_end_io_work(struct work_struct *work); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 65bbc93..ea5f24f 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -185,8 +185,6 @@ void ext4_evict_inode(struct inode *inode) trace_ext4_evict_inode(inode); - ext4_ioend_wait(inode); - if (inode->i_nlink) { /* * When journalling data dirty buffers are tracked only in the @@ -216,6 +214,7 @@ void ext4_evict_inode(struct inode *inode) filemap_write_and_wait(&inode->i_data); } truncate_inode_pages(&inode->i_data, 0); + ext4_ioend_shutdown(inode); goto no_delete; } @@ -225,6 +224,7 @@ void ext4_evict_inode(struct inode *inode) if (ext4_should_order_data(inode)) ext4_begin_ordered_truncate(inode, 0); truncate_inode_pages(&inode->i_data, 0); + ext4_ioend_shutdown(inode); if (is_bad_inode(inode)) goto no_delete; diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c index 809b310..047a6de 100644 --- a/fs/ext4/page-io.c +++ b/fs/ext4/page-io.c @@ -50,11 +50,21 @@ void ext4_exit_pageio(void) kmem_cache_destroy(io_page_cachep); } -void ext4_ioend_wait(struct inode *inode) +/* + * This function is called by ext4_evict_inode() to make sure there is + * no more pending I/O completion work left to do. + */ +void ext4_ioend_shutdown(struct inode *inode) { wait_queue_head_t *wq = ext4_ioend_wq(inode); wait_event(*wq, (atomic_read(&EXT4_I(inode)->i_ioend_count) == 0)); + /* + * We need to make sure the work structure is finished being + * used before we let the inode get destroyed. + */ + if (work_pending(&EXT4_I(inode)->i_unwritten_work)) + cancel_work_sync(&EXT4_I(inode)->i_unwritten_work); } static void put_io_page(struct ext4_io_page *io_page) -- cgit v1.1 From 2b405bfa84063bfa35621d2d6879f52693c614b0 Mon Sep 17 00:00:00 2001 From: Theodore Ts'o Date: Wed, 20 Mar 2013 09:42:11 -0400 Subject: ext4: fix data=journal fast mount/umount hang In data=journal mode, if we unmount the file system before a transaction has a chance to complete, when the journal inode is being evicted, we can end up calling into jbd2_log_wait_commit() for the last transaction, after the journalling machinery has been shut down. Arguably we should adjust ext4_should_journal_data() to return FALSE for the journal inode, but the only place it matters is ext4_evict_inode(), and so to save a bit of CPU time, and to make the patch much more obviously correct by inspection(tm), we'll fix it by explicitly not trying to waiting for a journal commit when we are evicting the journal inode, since it's guaranteed to never succeed in this case. This can be easily replicated via: mount -t ext4 -o data=journal /dev/vdb /vdb ; umount /vdb ------------[ cut here ]------------ WARNING: at /usr/projects/linux/ext4/fs/jbd2/journal.c:542 __jbd2_log_start_commit+0xba/0xcd() Hardware name: Bochs JBD2: bad log_start_commit: 3005630206 3005630206 0 0 Modules linked in: Pid: 2909, comm: umount Not tainted 3.8.0-rc3 #1020 Call Trace: [] warn_slowpath_common+0x68/0x7d [] ? __jbd2_log_start_commit+0xba/0xcd [] warn_slowpath_fmt+0x2b/0x2f [] __jbd2_log_start_commit+0xba/0xcd [] jbd2_log_start_commit+0x24/0x34 [] ext4_evict_inode+0x71/0x2e3 [] evict+0x94/0x135 [] iput+0x10a/0x110 [] jbd2_journal_destroy+0x190/0x1ce [] ? bit_waitqueue+0x50/0x50 [] ext4_put_super+0x52/0x294 [] generic_shutdown_super+0x48/0xb4 [] kill_block_super+0x22/0x60 [] deactivate_locked_super+0x22/0x49 [] deactivate_super+0x30/0x33 [] mntput_no_expire+0x107/0x10c [] sys_umount+0x2cf/0x2e0 [] sys_oldumount+0x12/0x14 [] syscall_call+0x7/0xb ---[ end trace 6a954cc790501c1f ]--- jbd2_log_wait_commit: error: j_commit_request=-1289337090, tid=0 Signed-off-by: "Theodore Ts'o" Reviewed-by: Jan Kara Cc: stable@vger.kernel.org --- fs/ext4/inode.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index ea5f24f..85e41a2 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -205,7 +205,8 @@ void ext4_evict_inode(struct inode *inode) * don't use page cache. */ if (ext4_should_journal_data(inode) && - (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) { + (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) && + inode->i_ino != EXT4_JOURNAL_INO) { journal_t *journal = EXT4_SB(inode->i_sb)->s_journal; tid_t commit_tid = EXT4_I(inode)->i_datasync_tid; -- cgit v1.1 From a686fd141e20244ad75f80ad54706da07d7bb90a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Wed, 20 Mar 2013 15:42:00 +0100 Subject: ALSA: hda - Fix typo in checking IEC958 emphasis bit There is a typo in convert_to_spdif_status() about checking the emphasis IEC958 status bit. It should check the given value instead of the resultant value. Reported-by: Martin Weishart Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index a9ebcf9..ecdf30e 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -3144,7 +3144,7 @@ static unsigned int convert_to_spdif_status(unsigned short val) if (val & AC_DIG1_PROFESSIONAL) sbits |= IEC958_AES0_PROFESSIONAL; if (sbits & IEC958_AES0_PROFESSIONAL) { - if (sbits & AC_DIG1_EMPHASIS) + if (val & AC_DIG1_EMPHASIS) sbits |= IEC958_AES0_PRO_EMPHASIS_5015; } else { if (val & AC_DIG1_EMPHASIS) -- cgit v1.1 From 699412d951e6dd4dec48db88f33dc27b361582f0 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 18 Mar 2013 10:14:47 +0200 Subject: usb: gadget: net22xx: fix ->disconnect reporting with the latest udc_start/udc_stop conversion, too much code was deleted which ended up creating a regression in net2272 and net2280 drivers. To fix the regression we revert one hunk of the original commits. Signed-off-by: Felipe Balbi --- drivers/usb/gadget/net2272.c | 7 +++++++ drivers/usb/gadget/net2280.c | 7 +++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c index d226058..17628337 100644 --- a/drivers/usb/gadget/net2272.c +++ b/drivers/usb/gadget/net2272.c @@ -1495,6 +1495,13 @@ stop_activity(struct net2272 *dev, struct usb_gadget_driver *driver) for (i = 0; i < 4; ++i) net2272_dequeue_all(&dev->ep[i]); + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&dev->lock); + driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + net2272_usb_reinit(dev); } diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index a1b650e..3105a4d 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -1946,6 +1946,13 @@ stop_activity (struct net2280 *dev, struct usb_gadget_driver *driver) for (i = 0; i < 7; i++) nuke (&dev->ep [i]); + /* report disconnect; the driver is already quiesced */ + if (driver) { + spin_unlock(&dev->lock); + driver->disconnect(&dev->gadget); + spin_lock(&dev->lock); + } + usb_reinit (dev); } -- cgit v1.1 From 511f3c5326eabe1ece35202a404c24c0aeacc246 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 15 Mar 2013 14:02:14 -0400 Subject: usb: gadget: udc-core: fix a regression during gadget driver unbinding This patch (as1666) fixes a regression in the UDC core. The core takes care of unbinding gadget drivers, and it does the unbinding before telling the UDC driver to turn off the controller hardware. When the call to the udc_stop callback is made, the gadget no longer has a driver. The callback routine should not be invoked with a pointer to the old driver; doing so can cause problems (such as use-after-free accesses in net2280). This patch should be applied, with appropriate context changes, to all the stable kernels going back to 3.1. Signed-off-by: Alan Stern CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 2a9cd36..f8f62c3 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -216,7 +216,7 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) usb_gadget_disconnect(udc->gadget); udc->driver->disconnect(udc->gadget); udc->driver->unbind(udc->gadget); - usb_gadget_udc_stop(udc->gadget, udc->driver); + usb_gadget_udc_stop(udc->gadget, NULL); udc->driver = NULL; udc->dev.driver = NULL; -- cgit v1.1 From 8119b55aed818e590c26cb97706c914e3d660fd8 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 15 Mar 2013 14:03:17 -0400 Subject: USB: gadget: net2280: remove leftover driver->unbind call in error pathway This patch (as1667) removes an incorrect driver->unbind() call from the net2280 driver. If startup fails, the UDC core takes care of unbinding the gadget driver automatically; the controller driver shouldn't do it too. Signed-off-by: Alan Stern Signed-off-by: Felipe Balbi --- drivers/usb/gadget/net2280.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c index 3105a4d..3bd0f99 100644 --- a/drivers/usb/gadget/net2280.c +++ b/drivers/usb/gadget/net2280.c @@ -1924,7 +1924,6 @@ static int net2280_start(struct usb_gadget *_gadget, err_func: device_remove_file (&dev->pdev->dev, &dev_attr_function); err_unbind: - driver->unbind (&dev->gadget); dev->gadget.dev.driver = NULL; dev->driver = NULL; return retval; -- cgit v1.1 From 3416905ba058e43112ad7b1b4859797f027f5a07 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Mon, 11 Mar 2013 16:32:14 +0100 Subject: usb: gadget: ffs: fix enable multiple instances This patch fixes an "off-by-one" bug found in 581791f (FunctionFS: enable multiple functions). During gfs_bind/gfs_unbind the functionfs_bind/functionfs_unbind should be called for every functionfs instance. With the "i" pre-decremented they were not called for the zeroth instance. Acked-by: Michal Nazarewicz Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Cc: [ balbi@ti.com : added offending commit's subject ] Signed-off-by: Felipe Balbi --- drivers/usb/gadget/g_ffs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 3953dd4..3b343b2 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -357,7 +357,7 @@ static int gfs_bind(struct usb_composite_dev *cdev) goto error; gfs_dev_desc.iProduct = gfs_strings[USB_GADGET_PRODUCT_IDX].id; - for (i = func_num; --i; ) { + for (i = func_num; i--; ) { ret = functionfs_bind(ffs_tab[i].ffs_data, cdev); if (unlikely(ret < 0)) { while (++i < func_num) @@ -413,7 +413,7 @@ static int gfs_unbind(struct usb_composite_dev *cdev) gether_cleanup(); gfs_ether_setup = false; - for (i = func_num; --i; ) + for (i = func_num; i--; ) if (ffs_tab[i].ffs_data) functionfs_unbind(ffs_tab[i].ffs_data); -- cgit v1.1 From 7fa4cd1a78ea5af688ffce45553abbee9d7afd84 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 20 Mar 2013 10:35:44 -0300 Subject: usb: ulpi: Define a *otg_ulpi_create no-op Building a kernel for imx_v4_v5_defconfig with CONFIG_USB_ULPI disabled, results in the following error: arch/arm/mach-imx/built-in.o: In function 'pca100_init': platform-mx2-emma.c:(.init.text+0x6788): undefined reference to 'otg_ulpi_create' platform-mx2-emma.c:(.init.text+0x682c): undefined reference to 'mxc_ulpi_access_ops' Fix this by providing a no-op definition of *otg_ulpi_create for the case when CONFIG_USB_ULPI is not defined. Acked-by: Igor Grinberg Signed-off-by: Fabio Estevam Signed-off-by: Felipe Balbi --- include/linux/usb/ulpi.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/linux/usb/ulpi.h b/include/linux/usb/ulpi.h index 6f033a4..5c295c2 100644 --- a/include/linux/usb/ulpi.h +++ b/include/linux/usb/ulpi.h @@ -181,8 +181,16 @@ /*-------------------------------------------------------------------------*/ +#if IS_ENABLED(CONFIG_USB_ULPI) struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops, unsigned int flags); +#else +static inline struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops, + unsigned int flags) +{ + return NULL; +} +#endif #ifdef CONFIG_USB_ULPI_VIEWPORT /* access ops for controllers with a viewport register */ -- cgit v1.1 From 967baed40eaaf6df632b7e929b903140a9744b87 Mon Sep 17 00:00:00 2001 From: Truls Bengtsson Date: Wed, 20 Mar 2013 14:02:25 +0100 Subject: usb: gadget: f_rndis: Avoid to use ERROR macro if cdev can be null The udc_irq service runs the isr_tr_complete_handler which in turn "nukes" the endpoints, including a call to rndis_response_complete, if appropriate. If the rndis_msg_parser fails here, an error will be printed using a dev_err call (through the ERROR() macro). However, if the usb cable was just disconnected the device (cdev) might not be available and will be null. Since the dev_err macro will dereference the cdev pointer we get a null pointer exception. Reviewed-by: Radovan Lekanovic Signed-off-by: Truls Bengtsson Signed-off-by: Oskar Andero Acked-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_rndis.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 71beeb8..cc9c49c 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -447,14 +447,13 @@ static void rndis_response_complete(struct usb_ep *ep, struct usb_request *req) static void rndis_command_complete(struct usb_ep *ep, struct usb_request *req) { struct f_rndis *rndis = req->context; - struct usb_composite_dev *cdev = rndis->port.func.config->cdev; int status; /* received RNDIS command from USB_CDC_SEND_ENCAPSULATED_COMMAND */ // spin_lock(&dev->lock); status = rndis_msg_parser(rndis->config, (u8 *) req->buf); if (status < 0) - ERROR(cdev, "RNDIS command error %d, %d/%d\n", + pr_err("RNDIS command error %d, %d/%d\n", status, req->actual, req->length); // spin_unlock(&dev->lock); } -- cgit v1.1 From f1e79e208076ffe7bad97158275f1c572c04f5c7 Mon Sep 17 00:00:00 2001 From: Masatake YAMATO Date: Tue, 19 Mar 2013 01:47:27 +0000 Subject: genetlink: trigger BUG_ON if a group name is too long Trigger BUG_ON if a group name is longer than GENL_NAMSIZ. Signed-off-by: Masatake YAMATO Signed-off-by: David S. Miller --- net/netlink/genetlink.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index f2aabb6..5a55be3 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -142,6 +142,7 @@ int genl_register_mc_group(struct genl_family *family, int err = 0; BUG_ON(grp->name[0] == '\0'); + BUG_ON(memchr(grp->name, '\0', GENL_NAMSIZ) == NULL); genl_lock(); -- cgit v1.1 From 44046a593eb770dbecdabf1c82bcd252f2a8337b Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:12 +0000 Subject: udp: add encap_destroy callback Users of udp encapsulation currently have an encap_rcv callback which they can use to hook into the udp receive path. In situations where a encapsulation user allocates resources associated with a udp encap socket, it may be convenient to be able to also hook the proto .destroy operation. For example, if an encap user holds a reference to the udp socket, the destroy hook might be used to relinquish this reference. This patch adds a socket destroy hook into udp, which is set and enabled in the same way as the existing encap_rcv hook. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- include/linux/udp.h | 1 + net/ipv4/udp.c | 7 +++++++ net/ipv6/udp.c | 8 ++++++++ 3 files changed, 16 insertions(+) diff --git a/include/linux/udp.h b/include/linux/udp.h index 9d81de1..42278bb 100644 --- a/include/linux/udp.h +++ b/include/linux/udp.h @@ -68,6 +68,7 @@ struct udp_sock { * For encapsulation sockets. */ int (*encap_rcv)(struct sock *sk, struct sk_buff *skb); + void (*encap_destroy)(struct sock *sk); }; static inline struct udp_sock *udp_sk(const struct sock *sk) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 265c42c..0a073a2 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1762,9 +1762,16 @@ int udp_rcv(struct sk_buff *skb) void udp_destroy_sock(struct sock *sk) { + struct udp_sock *up = udp_sk(sk); bool slow = lock_sock_fast(sk); udp_flush_pending_frames(sk); unlock_sock_fast(sk, slow); + if (static_key_false(&udp_encap_needed) && up->encap_type) { + void (*encap_destroy)(struct sock *sk); + encap_destroy = ACCESS_ONCE(up->encap_destroy); + if (encap_destroy) + encap_destroy(sk); + } } /* diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 599e1ba6..d8e5e85 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1285,10 +1285,18 @@ do_confirm: void udpv6_destroy_sock(struct sock *sk) { + struct udp_sock *up = udp_sk(sk); lock_sock(sk); udp_v6_flush_pending_frames(sk); release_sock(sk); + if (static_key_false(&udpv6_encap_needed) && up->encap_type) { + void (*encap_destroy)(struct sock *sk); + encap_destroy = ACCESS_ONCE(up->encap_destroy); + if (encap_destroy) + encap_destroy(sk); + } + inet6_destroy_sock(sk); } -- cgit v1.1 From 9980d001cec86c3c75f3a6008ddb73c397ea3b3e Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:13 +0000 Subject: l2tp: add udp encap socket destroy handler L2TP sessions hold a reference to the tunnel socket to prevent it going away while sessions are still active. However, since tunnel destruction is handled by the sock sk_destruct callback there is a catch-22: a tunnel with sessions cannot be deleted since each session holds a reference to the tunnel socket. If userspace closes a managed tunnel socket, or dies, the tunnel will persist and it will be neccessary to individually delete the sessions using netlink commands. This is ugly. To prevent this occuring, this patch leverages the udp encapsulation socket destroy callback to gain early notification when the tunnel socket is closed. This allows us to safely close the sessions running in the tunnel, dropping the tunnel socket references in the process. The tunnel socket is then destroyed as normal, and the tunnel resources deallocated in sk_destruct. While we're at it, ensure that l2tp_tunnel_closeall correctly drops session references to allow the sessions to be deleted rather than leaking. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index d36875f..ee726a7 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1282,6 +1282,7 @@ static void l2tp_tunnel_destruct(struct sock *sk) /* No longer an encapsulation socket. See net/ipv4/udp.c */ (udp_sk(sk))->encap_type = 0; (udp_sk(sk))->encap_rcv = NULL; + (udp_sk(sk))->encap_destroy = NULL; break; case L2TP_ENCAPTYPE_IP: break; @@ -1360,6 +1361,8 @@ again: if (session->deref != NULL) (*session->deref)(session); + l2tp_session_dec_refcount(session); + write_lock_bh(&tunnel->hlist_lock); /* Now restart from the beginning of this hash @@ -1373,6 +1376,16 @@ again: write_unlock_bh(&tunnel->hlist_lock); } +/* Tunnel socket destroy hook for UDP encapsulation */ +static void l2tp_udp_encap_destroy(struct sock *sk) +{ + struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk); + if (tunnel) { + l2tp_tunnel_closeall(tunnel); + sock_put(sk); + } +} + /* Really kill the tunnel. * Come here only when all sessions have been cleared from the tunnel. */ @@ -1668,6 +1681,7 @@ int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32 /* Mark socket as an encapsulation socket. See net/ipv4/udp.c */ udp_sk(sk)->encap_type = UDP_ENCAP_L2TPINUDP; udp_sk(sk)->encap_rcv = l2tp_udp_encap_recv; + udp_sk(sk)->encap_destroy = l2tp_udp_encap_destroy; #if IS_ENABLED(CONFIG_IPV6) if (sk->sk_family == PF_INET6) udpv6_encap_enable(); -- cgit v1.1 From e34f4c7050e5471b6d4fb25380713937fc837514 Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:14 +0000 Subject: l2tp: export l2tp_tunnel_closeall l2tp_core internally uses l2tp_tunnel_closeall to close all sessions in a tunnel when a UDP-encapsulation socket is destroyed. We need to do something similar for IP-encapsulation sockets. Export l2tp_tunnel_closeall as a GPL symbol to enable l2tp_ip and l2tp_ip6 to call it from their .destroy handlers. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 4 ++-- net/l2tp/l2tp_core.h | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index ee726a7..287e327 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -114,7 +114,6 @@ struct l2tp_net { static void l2tp_session_set_header_len(struct l2tp_session *session, int version); static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel); -static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel); static inline struct l2tp_net *l2tp_pernet(struct net *net) { @@ -1312,7 +1311,7 @@ end: /* When the tunnel is closed, all the attached sessions need to go too. */ -static void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel) +void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel) { int hash; struct hlist_node *walk; @@ -1375,6 +1374,7 @@ again: } write_unlock_bh(&tunnel->hlist_lock); } +EXPORT_SYMBOL_GPL(l2tp_tunnel_closeall); /* Tunnel socket destroy hook for UDP encapsulation */ static void l2tp_udp_encap_destroy(struct sock *sk) diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index 8eb8f1d..b0861f6 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -240,6 +240,7 @@ extern struct l2tp_tunnel *l2tp_tunnel_find(struct net *net, u32 tunnel_id); extern struct l2tp_tunnel *l2tp_tunnel_find_nth(struct net *net, int nth); extern int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_id, u32 peer_tunnel_id, struct l2tp_tunnel_cfg *cfg, struct l2tp_tunnel **tunnelp); +extern void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel); extern int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel); extern struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg); extern int l2tp_session_delete(struct l2tp_session *session); -- cgit v1.1 From 936063175afd895913a5e9db77e1a0ef43ea44ea Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:15 +0000 Subject: l2tp: close sessions in ip socket destroy callback l2tp_core hooks UDP's .destroy handler to gain advance warning of a tunnel socket being closed from userspace. We need to do the same thing for IP-encapsulation sockets. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_ip.c | 6 ++++++ net/l2tp/l2tp_ip6.c | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 7f41b70..571db8d 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -228,10 +228,16 @@ static void l2tp_ip_close(struct sock *sk, long timeout) static void l2tp_ip_destroy_sock(struct sock *sk) { struct sk_buff *skb; + struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk); while ((skb = __skb_dequeue_tail(&sk->sk_write_queue)) != NULL) kfree_skb(skb); + if (tunnel) { + l2tp_tunnel_closeall(tunnel); + sock_put(sk); + } + sk_refcnt_debug_dec(sk); } diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index 41f2f81..c74f5a9 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -241,10 +241,17 @@ static void l2tp_ip6_close(struct sock *sk, long timeout) static void l2tp_ip6_destroy_sock(struct sock *sk) { + struct l2tp_tunnel *tunnel = l2tp_sock_to_tunnel(sk); + lock_sock(sk); ip6_flush_pending_frames(sk); release_sock(sk); + if (tunnel) { + l2tp_tunnel_closeall(tunnel); + sock_put(sk); + } + inet6_destroy_sock(sk); } -- cgit v1.1 From 2b551c6e7d5bca2c78c216b15ef675653d4f459a Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:16 +0000 Subject: l2tp: close sessions before initiating tunnel delete When a user deletes a tunnel using netlink, all the sessions in the tunnel should also be deleted. Since running sessions will pin the tunnel socket with the references they hold, have the l2tp_tunnel_delete close all sessions in a tunnel before finally closing the tunnel socket. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 287e327..0dd50c0 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1737,6 +1737,7 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create); */ int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel) { + l2tp_tunnel_closeall(tunnel); return (false == queue_work(l2tp_wq, &tunnel->del_work)); } EXPORT_SYMBOL_GPL(l2tp_tunnel_delete); -- cgit v1.1 From 8abbbe8ff572fd84d1b98eb9acf30611a97cf72e Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:17 +0000 Subject: l2tp: take a reference for kernel sockets in l2tp_tunnel_sock_lookup When looking up the tunnel socket in struct l2tp_tunnel, hold a reference whether the socket was created by the kernel or by userspace. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 0dd50c0..45373fe 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -191,6 +191,7 @@ struct sock *l2tp_tunnel_sock_lookup(struct l2tp_tunnel *tunnel) } else { /* Socket is owned by kernelspace */ sk = tunnel->sock; + sock_hold(sk); } out: @@ -209,6 +210,7 @@ void l2tp_tunnel_sock_put(struct sock *sk) } sock_put(sk); } + sock_put(sk); } EXPORT_SYMBOL_GPL(l2tp_tunnel_sock_put); -- cgit v1.1 From 02d13ed5f94af38c37d1abd53462fe48d78bcc9d Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:18 +0000 Subject: l2tp: don't BUG_ON sk_socket being NULL It is valid for an existing struct sock object to have a NULL sk_socket pointer, so don't BUG_ON in l2tp_tunnel_del_work if that should occur. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 45373fe..e841ef2 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1412,19 +1412,21 @@ static void l2tp_tunnel_del_work(struct work_struct *work) return; sock = sk->sk_socket; - BUG_ON(!sock); - /* If the tunnel socket was created directly by the kernel, use the - * sk_* API to release the socket now. Otherwise go through the - * inet_* layer to shut the socket down, and let userspace close it. + /* If the tunnel socket was created by userspace, then go through the + * inet layer to shut the socket down, and let userspace close it. + * Otherwise, if we created the socket directly within the kernel, use + * the sk API to release it here. * In either case the tunnel resources are freed in the socket * destructor when the tunnel socket goes away. */ - if (sock->file == NULL) { - kernel_sock_shutdown(sock, SHUT_RDWR); - sk_release_kernel(sk); + if (tunnel->fd >= 0) { + if (sock) + inet_shutdown(sock, 2); } else { - inet_shutdown(sock, 2); + if (sock) + kernel_sock_shutdown(sock, SHUT_RDWR); + sk_release_kernel(sk); } l2tp_tunnel_sock_put(sk); -- cgit v1.1 From 48f72f92b31431c40279b0fba6c5588e07e67d95 Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:19 +0000 Subject: l2tp: add session reorder queue purge function to core If an l2tp session is deleted, it is necessary to delete skbs in-flight on the session's reorder queue before taking it down. Rather than having each pseudowire implementation reaching into the l2tp_session struct to handle this itself, provide a function in l2tp_core to purge the session queue. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 17 +++++++++++++++++ net/l2tp/l2tp_core.h | 1 + 2 files changed, 18 insertions(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index e841ef2..69c316d 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -829,6 +829,23 @@ discard: } EXPORT_SYMBOL(l2tp_recv_common); +/* Drop skbs from the session's reorder_q + */ +int l2tp_session_queue_purge(struct l2tp_session *session) +{ + struct sk_buff *skb = NULL; + BUG_ON(!session); + BUG_ON(session->magic != L2TP_SESSION_MAGIC); + while ((skb = skb_dequeue(&session->reorder_q))) { + atomic_long_inc(&session->stats.rx_errors); + kfree_skb(skb); + if (session->deref) + (*session->deref)(session); + } + return 0; +} +EXPORT_SYMBOL_GPL(l2tp_session_queue_purge); + /* Internal UDP receive frame. Do the real work of receiving an L2TP data frame * here. The skb is not on a list when we get here. * Returns 0 if the packet was a data packet and was successfully passed on. diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index b0861f6..d40713d 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -246,6 +246,7 @@ extern struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunne extern int l2tp_session_delete(struct l2tp_session *session); extern void l2tp_session_free(struct l2tp_session *session); extern void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, unsigned char *ptr, unsigned char *optr, u16 hdrflags, int length, int (*payload_hook)(struct sk_buff *skb)); +extern int l2tp_session_queue_purge(struct l2tp_session *session); extern int l2tp_udp_encap_recv(struct sock *sk, struct sk_buff *skb); extern int l2tp_xmit_skb(struct l2tp_session *session, struct sk_buff *skb, int hdr_len); -- cgit v1.1 From 4c6e2fd35460208596fa099ee0750a4b0438aa5c Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:20 +0000 Subject: l2tp: purge session reorder queue on delete Add calls to l2tp_session_queue_purge as a part of l2tp_tunnel_closeall and l2tp_session_delete. Pseudowire implementations which are deleted only via. l2tp_core l2tp_session_delete calls can dispense with their own code for flushing the reorder queue. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 69c316d..c00f31b 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1373,6 +1373,8 @@ again: synchronize_rcu(); } + l2tp_session_queue_purge(session); + if (session->session_close != NULL) (*session->session_close)(session); @@ -1813,6 +1815,8 @@ EXPORT_SYMBOL_GPL(l2tp_session_free); */ int l2tp_session_delete(struct l2tp_session *session) { + l2tp_session_queue_purge(session); + if (session->session_close != NULL) (*session->session_close)(session); -- cgit v1.1 From cf2f5c886a209377daefd5d2ba0bcd49c3887813 Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:21 +0000 Subject: l2tp: push all ppp pseudowire shutdown through .release handler If userspace deletes a ppp pseudowire using the netlink API, either by directly deleting the session or by deleting the tunnel that contains the session, we need to tear down the corresponding pppox channel. Rather than trying to manage two pppox unbind codepaths, switch the netlink and l2tp_core session_close handlers to close via. the l2tp_ppp socket .release handler. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_ppp.c | 53 ++++++++++------------------------------------------- 1 file changed, 10 insertions(+), 43 deletions(-) diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 6a53371..7e3e16a 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -97,6 +97,7 @@ #include #include #include +#include #include #include @@ -447,34 +448,16 @@ static void pppol2tp_session_close(struct l2tp_session *session) { struct pppol2tp_session *ps = l2tp_session_priv(session); struct sock *sk = ps->sock; - struct sk_buff *skb; + struct socket *sock = sk->sk_socket; BUG_ON(session->magic != L2TP_SESSION_MAGIC); - if (session->session_id == 0) - goto out; - - if (sk != NULL) { - lock_sock(sk); - - if (sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND)) { - pppox_unbind_sock(sk); - sk->sk_state = PPPOX_DEAD; - sk->sk_state_change(sk); - } - - /* Purge any queued data */ - skb_queue_purge(&sk->sk_receive_queue); - skb_queue_purge(&sk->sk_write_queue); - while ((skb = skb_dequeue(&session->reorder_q))) { - kfree_skb(skb); - sock_put(sk); - } - release_sock(sk); + if (sock) { + inet_shutdown(sock, 2); + /* Don't let the session go away before our socket does */ + l2tp_session_inc_refcount(session); } - -out: return; } @@ -525,16 +508,12 @@ static int pppol2tp_release(struct socket *sock) session = pppol2tp_sock_to_session(sk); /* Purge any queued data */ - skb_queue_purge(&sk->sk_receive_queue); - skb_queue_purge(&sk->sk_write_queue); if (session != NULL) { - struct sk_buff *skb; - while ((skb = skb_dequeue(&session->reorder_q))) { - kfree_skb(skb); - sock_put(sk); - } + l2tp_session_queue_purge(session); sock_put(sk); } + skb_queue_purge(&sk->sk_receive_queue); + skb_queue_purge(&sk->sk_write_queue); release_sock(sk); @@ -880,18 +859,6 @@ out: return error; } -/* Called when deleting sessions via the netlink interface. - */ -static int pppol2tp_session_delete(struct l2tp_session *session) -{ - struct pppol2tp_session *ps = l2tp_session_priv(session); - - if (ps->sock == NULL) - l2tp_session_dec_refcount(session); - - return 0; -} - #endif /* CONFIG_L2TP_V3 */ /* getname() support. @@ -1839,7 +1806,7 @@ static const struct pppox_proto pppol2tp_proto = { static const struct l2tp_nl_cmd_ops pppol2tp_nl_cmd_ops = { .session_create = pppol2tp_session_create, - .session_delete = pppol2tp_session_delete, + .session_delete = l2tp_session_delete, }; #endif /* CONFIG_L2TP_V3 */ -- cgit v1.1 From 7b7c0719cd7afee725b920d75ec6a500b76107e6 Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:22 +0000 Subject: l2tp: avoid deadlock in l2tp stats update l2tp's u64_stats writers were incorrectly synchronised, making it possible to deadlock a 64bit machine running a 32bit kernel simply by sending the l2tp code netlink commands while passing data through l2tp sessions. Previous discussion on netdev determined that alternative solutions such as spinlock writer synchronisation or per-cpu data would bring unjustified overhead, given that most users interested in high volume traffic will likely be running 64bit kernels on 64bit hardware. As such, this patch replaces l2tp's use of u64_stats with atomic_long_t, thereby avoiding the deadlock. Ref: http://marc.info/?l=linux-netdev&m=134029167910731&w=2 http://marc.info/?l=linux-netdev&m=134079868111131&w=2 Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 75 +++++++++++++------------------------------------ net/l2tp/l2tp_core.h | 19 ++++++------- net/l2tp/l2tp_debugfs.c | 28 +++++++++--------- net/l2tp/l2tp_netlink.c | 72 ++++++++++++++++++----------------------------- net/l2tp/l2tp_ppp.c | 46 +++++++++++++++--------------- 5 files changed, 93 insertions(+), 147 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index c00f31b..97d30ac 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -374,10 +374,8 @@ static void l2tp_recv_queue_skb(struct l2tp_session *session, struct sk_buff *sk struct sk_buff *skbp; struct sk_buff *tmp; u32 ns = L2TP_SKB_CB(skb)->ns; - struct l2tp_stats *sstats; spin_lock_bh(&session->reorder_q.lock); - sstats = &session->stats; skb_queue_walk_safe(&session->reorder_q, skbp, tmp) { if (L2TP_SKB_CB(skbp)->ns > ns) { __skb_queue_before(&session->reorder_q, skbp, skb); @@ -385,9 +383,7 @@ static void l2tp_recv_queue_skb(struct l2tp_session *session, struct sk_buff *sk "%s: pkt %hu, inserted before %hu, reorder_q len=%d\n", session->name, ns, L2TP_SKB_CB(skbp)->ns, skb_queue_len(&session->reorder_q)); - u64_stats_update_begin(&sstats->syncp); - sstats->rx_oos_packets++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_oos_packets); goto out; } } @@ -404,23 +400,16 @@ static void l2tp_recv_dequeue_skb(struct l2tp_session *session, struct sk_buff * { struct l2tp_tunnel *tunnel = session->tunnel; int length = L2TP_SKB_CB(skb)->length; - struct l2tp_stats *tstats, *sstats; /* We're about to requeue the skb, so return resources * to its current owner (a socket receive buffer). */ skb_orphan(skb); - tstats = &tunnel->stats; - u64_stats_update_begin(&tstats->syncp); - sstats = &session->stats; - u64_stats_update_begin(&sstats->syncp); - tstats->rx_packets++; - tstats->rx_bytes += length; - sstats->rx_packets++; - sstats->rx_bytes += length; - u64_stats_update_end(&tstats->syncp); - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&tunnel->stats.rx_packets); + atomic_long_add(length, &tunnel->stats.rx_bytes); + atomic_long_inc(&session->stats.rx_packets); + atomic_long_add(length, &session->stats.rx_bytes); if (L2TP_SKB_CB(skb)->has_seq) { /* Bump our Nr */ @@ -451,7 +440,6 @@ static void l2tp_recv_dequeue(struct l2tp_session *session) { struct sk_buff *skb; struct sk_buff *tmp; - struct l2tp_stats *sstats; /* If the pkt at the head of the queue has the nr that we * expect to send up next, dequeue it and any other @@ -459,13 +447,10 @@ static void l2tp_recv_dequeue(struct l2tp_session *session) */ start: spin_lock_bh(&session->reorder_q.lock); - sstats = &session->stats; skb_queue_walk_safe(&session->reorder_q, skb, tmp) { if (time_after(jiffies, L2TP_SKB_CB(skb)->expires)) { - u64_stats_update_begin(&sstats->syncp); - sstats->rx_seq_discards++; - sstats->rx_errors++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_seq_discards); + atomic_long_inc(&session->stats.rx_errors); l2tp_dbg(session, L2TP_MSG_SEQ, "%s: oos pkt %u len %d discarded (too old), waiting for %u, reorder_q_len=%d\n", session->name, L2TP_SKB_CB(skb)->ns, @@ -624,7 +609,6 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, struct l2tp_tunnel *tunnel = session->tunnel; int offset; u32 ns, nr; - struct l2tp_stats *sstats = &session->stats; /* The ref count is increased since we now hold a pointer to * the session. Take care to decrement the refcnt when exiting @@ -641,9 +625,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, "%s: cookie mismatch (%u/%u). Discarding.\n", tunnel->name, tunnel->tunnel_id, session->session_id); - u64_stats_update_begin(&sstats->syncp); - sstats->rx_cookie_discards++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_cookie_discards); goto discard; } ptr += session->peer_cookie_len; @@ -712,9 +694,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, l2tp_warn(session, L2TP_MSG_SEQ, "%s: recv data has no seq numbers when required. Discarding.\n", session->name); - u64_stats_update_begin(&sstats->syncp); - sstats->rx_seq_discards++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_seq_discards); goto discard; } @@ -733,9 +713,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, l2tp_warn(session, L2TP_MSG_SEQ, "%s: recv data has no seq numbers when required. Discarding.\n", session->name); - u64_stats_update_begin(&sstats->syncp); - sstats->rx_seq_discards++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_seq_discards); goto discard; } } @@ -789,9 +767,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, * packets */ if (L2TP_SKB_CB(skb)->ns != session->nr) { - u64_stats_update_begin(&sstats->syncp); - sstats->rx_seq_discards++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_seq_discards); l2tp_dbg(session, L2TP_MSG_SEQ, "%s: oos pkt %u len %d discarded, waiting for %u, reorder_q_len=%d\n", session->name, L2TP_SKB_CB(skb)->ns, @@ -817,9 +793,7 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, return; discard: - u64_stats_update_begin(&sstats->syncp); - sstats->rx_errors++; - u64_stats_update_end(&sstats->syncp); + atomic_long_inc(&session->stats.rx_errors); kfree_skb(skb); if (session->deref) @@ -861,7 +835,6 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, u32 tunnel_id, session_id; u16 version; int length; - struct l2tp_stats *tstats; if (tunnel->sock && l2tp_verify_udp_checksum(tunnel->sock, skb)) goto discard_bad_csum; @@ -950,10 +923,7 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb, discard_bad_csum: LIMIT_NETDEBUG("%s: UDP: bad checksum\n", tunnel->name); UDP_INC_STATS_USER(tunnel->l2tp_net, UDP_MIB_INERRORS, 0); - tstats = &tunnel->stats; - u64_stats_update_begin(&tstats->syncp); - tstats->rx_errors++; - u64_stats_update_end(&tstats->syncp); + atomic_long_inc(&tunnel->stats.rx_errors); kfree_skb(skb); return 0; @@ -1080,7 +1050,6 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, struct l2tp_tunnel *tunnel = session->tunnel; unsigned int len = skb->len; int error; - struct l2tp_stats *tstats, *sstats; /* Debug */ if (session->send_seq) @@ -1109,21 +1078,15 @@ static int l2tp_xmit_core(struct l2tp_session *session, struct sk_buff *skb, error = ip_queue_xmit(skb, fl); /* Update stats */ - tstats = &tunnel->stats; - u64_stats_update_begin(&tstats->syncp); - sstats = &session->stats; - u64_stats_update_begin(&sstats->syncp); if (error >= 0) { - tstats->tx_packets++; - tstats->tx_bytes += len; - sstats->tx_packets++; - sstats->tx_bytes += len; + atomic_long_inc(&tunnel->stats.tx_packets); + atomic_long_add(len, &tunnel->stats.tx_bytes); + atomic_long_inc(&session->stats.tx_packets); + atomic_long_add(len, &session->stats.tx_bytes); } else { - tstats->tx_errors++; - sstats->tx_errors++; + atomic_long_inc(&tunnel->stats.tx_errors); + atomic_long_inc(&session->stats.tx_errors); } - u64_stats_update_end(&tstats->syncp); - u64_stats_update_end(&sstats->syncp); return 0; } diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index d40713d..519b013 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -36,16 +36,15 @@ enum { struct sk_buff; struct l2tp_stats { - u64 tx_packets; - u64 tx_bytes; - u64 tx_errors; - u64 rx_packets; - u64 rx_bytes; - u64 rx_seq_discards; - u64 rx_oos_packets; - u64 rx_errors; - u64 rx_cookie_discards; - struct u64_stats_sync syncp; + atomic_long_t tx_packets; + atomic_long_t tx_bytes; + atomic_long_t tx_errors; + atomic_long_t rx_packets; + atomic_long_t rx_bytes; + atomic_long_t rx_seq_discards; + atomic_long_t rx_oos_packets; + atomic_long_t rx_errors; + atomic_long_t rx_cookie_discards; }; struct l2tp_tunnel; diff --git a/net/l2tp/l2tp_debugfs.c b/net/l2tp/l2tp_debugfs.c index c3813bc..072d720 100644 --- a/net/l2tp/l2tp_debugfs.c +++ b/net/l2tp/l2tp_debugfs.c @@ -146,14 +146,14 @@ static void l2tp_dfs_seq_tunnel_show(struct seq_file *m, void *v) tunnel->sock ? atomic_read(&tunnel->sock->sk_refcnt) : 0, atomic_read(&tunnel->ref_count)); - seq_printf(m, " %08x rx %llu/%llu/%llu rx %llu/%llu/%llu\n", + seq_printf(m, " %08x rx %ld/%ld/%ld rx %ld/%ld/%ld\n", tunnel->debug, - (unsigned long long)tunnel->stats.tx_packets, - (unsigned long long)tunnel->stats.tx_bytes, - (unsigned long long)tunnel->stats.tx_errors, - (unsigned long long)tunnel->stats.rx_packets, - (unsigned long long)tunnel->stats.rx_bytes, - (unsigned long long)tunnel->stats.rx_errors); + atomic_long_read(&tunnel->stats.tx_packets), + atomic_long_read(&tunnel->stats.tx_bytes), + atomic_long_read(&tunnel->stats.tx_errors), + atomic_long_read(&tunnel->stats.rx_packets), + atomic_long_read(&tunnel->stats.rx_bytes), + atomic_long_read(&tunnel->stats.rx_errors)); if (tunnel->show != NULL) tunnel->show(m, tunnel); @@ -203,14 +203,14 @@ static void l2tp_dfs_seq_session_show(struct seq_file *m, void *v) seq_printf(m, "\n"); } - seq_printf(m, " %hu/%hu tx %llu/%llu/%llu rx %llu/%llu/%llu\n", + seq_printf(m, " %hu/%hu tx %ld/%ld/%ld rx %ld/%ld/%ld\n", session->nr, session->ns, - (unsigned long long)session->stats.tx_packets, - (unsigned long long)session->stats.tx_bytes, - (unsigned long long)session->stats.tx_errors, - (unsigned long long)session->stats.rx_packets, - (unsigned long long)session->stats.rx_bytes, - (unsigned long long)session->stats.rx_errors); + atomic_long_read(&session->stats.tx_packets), + atomic_long_read(&session->stats.tx_bytes), + atomic_long_read(&session->stats.tx_errors), + atomic_long_read(&session->stats.rx_packets), + atomic_long_read(&session->stats.rx_bytes), + atomic_long_read(&session->stats.rx_errors)); if (session->show != NULL) session->show(m, session); diff --git a/net/l2tp/l2tp_netlink.c b/net/l2tp/l2tp_netlink.c index c1bab22..0825ff2 100644 --- a/net/l2tp/l2tp_netlink.c +++ b/net/l2tp/l2tp_netlink.c @@ -246,8 +246,6 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla #if IS_ENABLED(CONFIG_IPV6) struct ipv6_pinfo *np = NULL; #endif - struct l2tp_stats stats; - unsigned int start; hdr = genlmsg_put(skb, portid, seq, &l2tp_nl_family, flags, L2TP_CMD_TUNNEL_GET); @@ -265,28 +263,22 @@ static int l2tp_nl_tunnel_send(struct sk_buff *skb, u32 portid, u32 seq, int fla if (nest == NULL) goto nla_put_failure; - do { - start = u64_stats_fetch_begin(&tunnel->stats.syncp); - stats.tx_packets = tunnel->stats.tx_packets; - stats.tx_bytes = tunnel->stats.tx_bytes; - stats.tx_errors = tunnel->stats.tx_errors; - stats.rx_packets = tunnel->stats.rx_packets; - stats.rx_bytes = tunnel->stats.rx_bytes; - stats.rx_errors = tunnel->stats.rx_errors; - stats.rx_seq_discards = tunnel->stats.rx_seq_discards; - stats.rx_oos_packets = tunnel->stats.rx_oos_packets; - } while (u64_stats_fetch_retry(&tunnel->stats.syncp, start)); - - if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, stats.tx_packets) || - nla_put_u64(skb, L2TP_ATTR_TX_BYTES, stats.tx_bytes) || - nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, stats.tx_errors) || - nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, stats.rx_packets) || - nla_put_u64(skb, L2TP_ATTR_RX_BYTES, stats.rx_bytes) || + if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, + atomic_long_read(&tunnel->stats.tx_packets)) || + nla_put_u64(skb, L2TP_ATTR_TX_BYTES, + atomic_long_read(&tunnel->stats.tx_bytes)) || + nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, + atomic_long_read(&tunnel->stats.tx_errors)) || + nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, + atomic_long_read(&tunnel->stats.rx_packets)) || + nla_put_u64(skb, L2TP_ATTR_RX_BYTES, + atomic_long_read(&tunnel->stats.rx_bytes)) || nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS, - stats.rx_seq_discards) || + atomic_long_read(&tunnel->stats.rx_seq_discards)) || nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS, - stats.rx_oos_packets) || - nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, stats.rx_errors)) + atomic_long_read(&tunnel->stats.rx_oos_packets)) || + nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, + atomic_long_read(&tunnel->stats.rx_errors))) goto nla_put_failure; nla_nest_end(skb, nest); @@ -612,8 +604,6 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl struct nlattr *nest; struct l2tp_tunnel *tunnel = session->tunnel; struct sock *sk = NULL; - struct l2tp_stats stats; - unsigned int start; sk = tunnel->sock; @@ -656,28 +646,22 @@ static int l2tp_nl_session_send(struct sk_buff *skb, u32 portid, u32 seq, int fl if (nest == NULL) goto nla_put_failure; - do { - start = u64_stats_fetch_begin(&session->stats.syncp); - stats.tx_packets = session->stats.tx_packets; - stats.tx_bytes = session->stats.tx_bytes; - stats.tx_errors = session->stats.tx_errors; - stats.rx_packets = session->stats.rx_packets; - stats.rx_bytes = session->stats.rx_bytes; - stats.rx_errors = session->stats.rx_errors; - stats.rx_seq_discards = session->stats.rx_seq_discards; - stats.rx_oos_packets = session->stats.rx_oos_packets; - } while (u64_stats_fetch_retry(&session->stats.syncp, start)); - - if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, stats.tx_packets) || - nla_put_u64(skb, L2TP_ATTR_TX_BYTES, stats.tx_bytes) || - nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, stats.tx_errors) || - nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, stats.rx_packets) || - nla_put_u64(skb, L2TP_ATTR_RX_BYTES, stats.rx_bytes) || + if (nla_put_u64(skb, L2TP_ATTR_TX_PACKETS, + atomic_long_read(&session->stats.tx_packets)) || + nla_put_u64(skb, L2TP_ATTR_TX_BYTES, + atomic_long_read(&session->stats.tx_bytes)) || + nla_put_u64(skb, L2TP_ATTR_TX_ERRORS, + atomic_long_read(&session->stats.tx_errors)) || + nla_put_u64(skb, L2TP_ATTR_RX_PACKETS, + atomic_long_read(&session->stats.rx_packets)) || + nla_put_u64(skb, L2TP_ATTR_RX_BYTES, + atomic_long_read(&session->stats.rx_bytes)) || nla_put_u64(skb, L2TP_ATTR_RX_SEQ_DISCARDS, - stats.rx_seq_discards) || + atomic_long_read(&session->stats.rx_seq_discards)) || nla_put_u64(skb, L2TP_ATTR_RX_OOS_PACKETS, - stats.rx_oos_packets) || - nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, stats.rx_errors)) + atomic_long_read(&session->stats.rx_oos_packets)) || + nla_put_u64(skb, L2TP_ATTR_RX_ERRORS, + atomic_long_read(&session->stats.rx_errors))) goto nla_put_failure; nla_nest_end(skb, nest); diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 7e3e16a..9d0eb8c 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -260,7 +260,7 @@ static void pppol2tp_recv(struct l2tp_session *session, struct sk_buff *skb, int session->name); /* Not bound. Nothing we can do, so discard. */ - session->stats.rx_errors++; + atomic_long_inc(&session->stats.rx_errors); kfree_skb(skb); } @@ -992,14 +992,14 @@ end: static void pppol2tp_copy_stats(struct pppol2tp_ioc_stats *dest, struct l2tp_stats *stats) { - dest->tx_packets = stats->tx_packets; - dest->tx_bytes = stats->tx_bytes; - dest->tx_errors = stats->tx_errors; - dest->rx_packets = stats->rx_packets; - dest->rx_bytes = stats->rx_bytes; - dest->rx_seq_discards = stats->rx_seq_discards; - dest->rx_oos_packets = stats->rx_oos_packets; - dest->rx_errors = stats->rx_errors; + dest->tx_packets = atomic_long_read(&stats->tx_packets); + dest->tx_bytes = atomic_long_read(&stats->tx_bytes); + dest->tx_errors = atomic_long_read(&stats->tx_errors); + dest->rx_packets = atomic_long_read(&stats->rx_packets); + dest->rx_bytes = atomic_long_read(&stats->rx_bytes); + dest->rx_seq_discards = atomic_long_read(&stats->rx_seq_discards); + dest->rx_oos_packets = atomic_long_read(&stats->rx_oos_packets); + dest->rx_errors = atomic_long_read(&stats->rx_errors); } /* Session ioctl helper. @@ -1633,14 +1633,14 @@ static void pppol2tp_seq_tunnel_show(struct seq_file *m, void *v) tunnel->name, (tunnel == tunnel->sock->sk_user_data) ? 'Y' : 'N', atomic_read(&tunnel->ref_count) - 1); - seq_printf(m, " %08x %llu/%llu/%llu %llu/%llu/%llu\n", + seq_printf(m, " %08x %ld/%ld/%ld %ld/%ld/%ld\n", tunnel->debug, - (unsigned long long)tunnel->stats.tx_packets, - (unsigned long long)tunnel->stats.tx_bytes, - (unsigned long long)tunnel->stats.tx_errors, - (unsigned long long)tunnel->stats.rx_packets, - (unsigned long long)tunnel->stats.rx_bytes, - (unsigned long long)tunnel->stats.rx_errors); + atomic_long_read(&tunnel->stats.tx_packets), + atomic_long_read(&tunnel->stats.tx_bytes), + atomic_long_read(&tunnel->stats.tx_errors), + atomic_long_read(&tunnel->stats.rx_packets), + atomic_long_read(&tunnel->stats.rx_bytes), + atomic_long_read(&tunnel->stats.rx_errors)); } static void pppol2tp_seq_session_show(struct seq_file *m, void *v) @@ -1675,14 +1675,14 @@ static void pppol2tp_seq_session_show(struct seq_file *m, void *v) session->lns_mode ? "LNS" : "LAC", session->debug, jiffies_to_msecs(session->reorder_timeout)); - seq_printf(m, " %hu/%hu %llu/%llu/%llu %llu/%llu/%llu\n", + seq_printf(m, " %hu/%hu %ld/%ld/%ld %ld/%ld/%ld\n", session->nr, session->ns, - (unsigned long long)session->stats.tx_packets, - (unsigned long long)session->stats.tx_bytes, - (unsigned long long)session->stats.tx_errors, - (unsigned long long)session->stats.rx_packets, - (unsigned long long)session->stats.rx_bytes, - (unsigned long long)session->stats.rx_errors); + atomic_long_read(&session->stats.tx_packets), + atomic_long_read(&session->stats.tx_bytes), + atomic_long_read(&session->stats.tx_errors), + atomic_long_read(&session->stats.rx_packets), + atomic_long_read(&session->stats.rx_bytes), + atomic_long_read(&session->stats.rx_errors)); if (po) seq_printf(m, " interface %s\n", ppp_dev_name(&po->chan)); -- cgit v1.1 From f6e16b299bacaa71c6604a784f2d088a966f8c23 Mon Sep 17 00:00:00 2001 From: Tom Parkin Date: Tue, 19 Mar 2013 06:11:23 +0000 Subject: l2tp: unhash l2tp sessions on delete, not on free If we postpone unhashing of l2tp sessions until the structure is freed, we risk: 1. further packets arriving and getting queued while the pseudowire is being closed down 2. the recv path hitting "scheduling while atomic" errors in the case that recv drops the last reference to a session and calls l2tp_session_free while in atomic context As such, l2tp sessions should be unhashed from l2tp_core data structures early in the teardown process prior to calling pseudowire close. For pseudowires like l2tp_ppp which have multiple shutdown codepaths, provide an unhash hook. Signed-off-by: Tom Parkin Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_core.c | 75 ++++++++++++++++++++++++---------------------------- net/l2tp/l2tp_core.h | 1 + net/l2tp/l2tp_ppp.c | 12 +++------ 3 files changed, 38 insertions(+), 50 deletions(-) diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c index 97d30ac..8aecf5d 100644 --- a/net/l2tp/l2tp_core.c +++ b/net/l2tp/l2tp_core.c @@ -1316,26 +1316,12 @@ again: hlist_del_init(&session->hlist); - /* Since we should hold the sock lock while - * doing any unbinding, we need to release the - * lock we're holding before taking that lock. - * Hold a reference to the sock so it doesn't - * disappear as we're jumping between locks. - */ if (session->ref != NULL) (*session->ref)(session); write_unlock_bh(&tunnel->hlist_lock); - if (tunnel->version != L2TP_HDR_VER_2) { - struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net); - - spin_lock_bh(&pn->l2tp_session_hlist_lock); - hlist_del_init_rcu(&session->global_hlist); - spin_unlock_bh(&pn->l2tp_session_hlist_lock); - synchronize_rcu(); - } - + __l2tp_session_unhash(session); l2tp_session_queue_purge(session); if (session->session_close != NULL) @@ -1732,64 +1718,71 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_delete); */ void l2tp_session_free(struct l2tp_session *session) { - struct l2tp_tunnel *tunnel; + struct l2tp_tunnel *tunnel = session->tunnel; BUG_ON(atomic_read(&session->ref_count) != 0); - tunnel = session->tunnel; - if (tunnel != NULL) { + if (tunnel) { BUG_ON(tunnel->magic != L2TP_TUNNEL_MAGIC); + if (session->session_id != 0) + atomic_dec(&l2tp_session_count); + sock_put(tunnel->sock); + session->tunnel = NULL; + l2tp_tunnel_dec_refcount(tunnel); + } + + kfree(session); + + return; +} +EXPORT_SYMBOL_GPL(l2tp_session_free); + +/* Remove an l2tp session from l2tp_core's hash lists. + * Provides a tidyup interface for pseudowire code which can't just route all + * shutdown via. l2tp_session_delete and a pseudowire-specific session_close + * callback. + */ +void __l2tp_session_unhash(struct l2tp_session *session) +{ + struct l2tp_tunnel *tunnel = session->tunnel; - /* Delete the session from the hash */ + /* Remove the session from core hashes */ + if (tunnel) { + /* Remove from the per-tunnel hash */ write_lock_bh(&tunnel->hlist_lock); hlist_del_init(&session->hlist); write_unlock_bh(&tunnel->hlist_lock); - /* Unlink from the global hash if not L2TPv2 */ + /* For L2TPv3 we have a per-net hash: remove from there, too */ if (tunnel->version != L2TP_HDR_VER_2) { struct l2tp_net *pn = l2tp_pernet(tunnel->l2tp_net); - spin_lock_bh(&pn->l2tp_session_hlist_lock); hlist_del_init_rcu(&session->global_hlist); spin_unlock_bh(&pn->l2tp_session_hlist_lock); synchronize_rcu(); } - - if (session->session_id != 0) - atomic_dec(&l2tp_session_count); - - sock_put(tunnel->sock); - - /* This will delete the tunnel context if this - * is the last session on the tunnel. - */ - session->tunnel = NULL; - l2tp_tunnel_dec_refcount(tunnel); } - - kfree(session); - - return; } -EXPORT_SYMBOL_GPL(l2tp_session_free); +EXPORT_SYMBOL_GPL(__l2tp_session_unhash); /* This function is used by the netlink SESSION_DELETE command and by pseudowire modules. */ int l2tp_session_delete(struct l2tp_session *session) { + if (session->ref) + (*session->ref)(session); + __l2tp_session_unhash(session); l2tp_session_queue_purge(session); - if (session->session_close != NULL) (*session->session_close)(session); - + if (session->deref) + (*session->ref)(session); l2tp_session_dec_refcount(session); - return 0; } EXPORT_SYMBOL_GPL(l2tp_session_delete); - /* We come here whenever a session's send_seq, cookie_len or * l2specific_len parameters are set. */ diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h index 519b013..485a490 100644 --- a/net/l2tp/l2tp_core.h +++ b/net/l2tp/l2tp_core.h @@ -242,6 +242,7 @@ extern int l2tp_tunnel_create(struct net *net, int fd, int version, u32 tunnel_i extern void l2tp_tunnel_closeall(struct l2tp_tunnel *tunnel); extern int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel); extern struct l2tp_session *l2tp_session_create(int priv_size, struct l2tp_tunnel *tunnel, u32 session_id, u32 peer_session_id, struct l2tp_session_cfg *cfg); +extern void __l2tp_session_unhash(struct l2tp_session *session); extern int l2tp_session_delete(struct l2tp_session *session); extern void l2tp_session_free(struct l2tp_session *session); extern void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb, unsigned char *ptr, unsigned char *optr, u16 hdrflags, int length, int (*payload_hook)(struct sk_buff *skb)); diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c index 9d0eb8c..637a341 100644 --- a/net/l2tp/l2tp_ppp.c +++ b/net/l2tp/l2tp_ppp.c @@ -466,19 +466,12 @@ static void pppol2tp_session_close(struct l2tp_session *session) */ static void pppol2tp_session_destruct(struct sock *sk) { - struct l2tp_session *session; - - if (sk->sk_user_data != NULL) { - session = sk->sk_user_data; - if (session == NULL) - goto out; - + struct l2tp_session *session = sk->sk_user_data; + if (session) { sk->sk_user_data = NULL; BUG_ON(session->magic != L2TP_SESSION_MAGIC); l2tp_session_dec_refcount(session); } - -out: return; } @@ -509,6 +502,7 @@ static int pppol2tp_release(struct socket *sock) /* Purge any queued data */ if (session != NULL) { + __l2tp_session_unhash(session); l2tp_session_queue_purge(session); sock_put(sk); } -- cgit v1.1 From 8ed781668dd49b608f1e67a22e3b445fd0c2cd6f Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Tue, 19 Mar 2013 06:39:29 +0000 Subject: flow_keys: include thoff into flow_keys for later usage In skb_flow_dissect(), we perform a dissection of a skbuff. Since we're doing the work here anyway, also store thoff for a later usage, e.g. in the BPF filter. Suggested-by: Eric Dumazet Signed-off-by: Daniel Borkmann Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/flow_keys.h | 1 + net/core/flow_dissector.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/include/net/flow_keys.h b/include/net/flow_keys.h index 80461c1..bb8271d 100644 --- a/include/net/flow_keys.h +++ b/include/net/flow_keys.h @@ -9,6 +9,7 @@ struct flow_keys { __be32 ports; __be16 port16[2]; }; + u16 thoff; u8 ip_proto; }; diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 9d4c720..e187bf0 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -140,6 +140,8 @@ ipv6: flow->ports = *ports; } + flow->thoff = (u16) nhoff; + return true; } EXPORT_SYMBOL(skb_flow_dissect); -- cgit v1.1 From 283951f95b067877ca5ea77afaa212bb1e0507b5 Mon Sep 17 00:00:00 2001 From: Martin Fuzzey Date: Tue, 19 Mar 2013 08:19:29 +0000 Subject: ipconfig: Fix newline handling in log message. When using ipconfig the logs currently look like: Single name server: [ 3.467270] IP-Config: Complete: [ 3.470613] device=eth0, hwaddr=ac:de:48:00:00:01, ipaddr=172.16.42.2, mask=255.255.255.0, gw=172.16.42.1 [ 3.480670] host=infigo-1, domain=, nis-domain=(none) [ 3.486166] bootserver=172.16.42.1, rootserver=172.16.42.1, rootpath= [ 3.492910] nameserver0=172.16.42.1[ 3.496853] ALSA device list: Three name servers: [ 3.496949] IP-Config: Complete: [ 3.500293] device=eth0, hwaddr=ac:de:48:00:00:01, ipaddr=172.16.42.2, mask=255.255.255.0, gw=172.16.42.1 [ 3.510367] host=infigo-1, domain=, nis-domain=(none) [ 3.515864] bootserver=172.16.42.1, rootserver=172.16.42.1, rootpath= [ 3.522635] nameserver0=172.16.42.1, nameserver1=172.16.42.100 [ 3.529149] , nameserver2=172.16.42.200 Fix newline handling for these cases Signed-off-by: Martin Fuzzey Signed-off-by: David S. Miller --- net/ipv4/ipconfig.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c index 98cbc68..bf6c5cf 100644 --- a/net/ipv4/ipconfig.c +++ b/net/ipv4/ipconfig.c @@ -1522,7 +1522,8 @@ static int __init ip_auto_config(void) } for (i++; i < CONF_NAMESERVERS_MAX; i++) if (ic_nameservers[i] != NONE) - pr_cont(", nameserver%u=%pI4\n", i, &ic_nameservers[i]); + pr_cont(", nameserver%u=%pI4", i, &ic_nameservers[i]); + pr_cont("\n"); #endif /* !SILENT */ return 0; -- cgit v1.1 From 0582b7d15f8a7ae53dd2128b8eb01567b3fd2277 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 19 Mar 2013 13:40:23 +0000 Subject: sh_eth: fix bitbang memory leak sh_mdio_init() allocates pointer to 'struct bb_info' but only stores it locally, so that sh_mdio_release() can't free it on driver unload. Add the pointer to 'struct bb_info' to 'struct sh_eth_private', so that sh_mdio_init() can save 'bitbang' variable for sh_mdio_release() to be able to free it later... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 5 +++++ drivers/net/ethernet/renesas/sh_eth.h | 1 + 2 files changed, 6 insertions(+) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 33e9617..c878628 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2220,6 +2220,7 @@ static void sh_eth_tsu_init(struct sh_eth_private *mdp) /* MDIO bus release function */ static int sh_mdio_release(struct net_device *ndev) { + struct sh_eth_private *mdp = netdev_priv(ndev); struct mii_bus *bus = dev_get_drvdata(&ndev->dev); /* unregister mdio bus */ @@ -2234,6 +2235,9 @@ static int sh_mdio_release(struct net_device *ndev) /* free bitbang info */ free_mdio_bitbang(bus); + /* free bitbang memory */ + kfree(mdp->bitbang); + return 0; } @@ -2262,6 +2266,7 @@ static int sh_mdio_init(struct net_device *ndev, int id, bitbang->ctrl.ops = &bb_ops; /* MII controller setting */ + mdp->bitbang = bitbang; mdp->mii_bus = alloc_mdio_bitbang(&bitbang->ctrl); if (!mdp->mii_bus) { ret = -ENOMEM; diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index bae84fd..e665567 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -705,6 +705,7 @@ struct sh_eth_private { const u16 *reg_offset; void __iomem *addr; void __iomem *tsu_addr; + struct bb_info *bitbang; u32 num_rx_ring; u32 num_tx_ring; dma_addr_t rx_desc_dma; -- cgit v1.1 From fc0c0900408e05758a0df17c1924ca837fafca5e Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Tue, 19 Mar 2013 13:41:32 +0000 Subject: sh_eth: check TSU registers ioremap() error One must check the result of ioremap() -- in this case it prevents potential kernel oops when initializing TSU registers further on... Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index c878628..bf5e3cf 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -2446,6 +2446,11 @@ static int sh_eth_drv_probe(struct platform_device *pdev) } mdp->tsu_addr = ioremap(rtsu->start, resource_size(rtsu)); + if (mdp->tsu_addr == NULL) { + ret = -ENOMEM; + dev_err(&pdev->dev, "TSU ioremap failed.\n"); + goto out_release; + } mdp->port = devno % 2; ndev->features = NETIF_F_HW_VLAN_FILTER; } -- cgit v1.1 From fa90b077d72b4ea92706e86fdff7b5dca294caa3 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 20 Mar 2013 02:21:48 +0000 Subject: lpc_eth: fix error return code in lpc_eth_drv_probe() Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller --- drivers/net/ethernet/nxp/lpc_eth.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index c4122c8..efa29b7 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -1472,7 +1472,8 @@ static int lpc_eth_drv_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, ndev); - if (lpc_mii_init(pldat) != 0) + ret = lpc_mii_init(pldat); + if (ret) goto err_out_unregister_netdev; netdev_info(ndev, "LPC mac at 0x%08x irq %d\n", -- cgit v1.1 From 896ee0eee6261e30c3623be931c3f621428947df Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 20 Mar 2013 05:19:24 +0000 Subject: net/irda: add missing error path release_sock call This makes sure that release_sock is called for all error conditions in irda_getsockopt. Signed-off-by: Kees Cook Reported-by: Brad Spengler Cc: stable@vger.kernel.org Signed-off-by: David S. Miller --- net/irda/af_irda.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index d07e3a6..d28e7f0 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -2583,8 +2583,10 @@ bed: NULL, NULL, NULL); /* Check if the we got some results */ - if (!self->cachedaddr) - return -EAGAIN; /* Didn't find any devices */ + if (!self->cachedaddr) { + err = -EAGAIN; /* Didn't find any devices */ + goto out; + } daddr = self->cachedaddr; /* Cleanup */ self->cachedaddr = 0; -- cgit v1.1 From da2191e31409d1058dcbed44e8f53e39a40e86b3 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 20 Mar 2013 12:31:07 -0300 Subject: net: fec: Define indexes as 'unsigned int' Fix the following warnings that happen when building with W=1 option: drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_free_buffers': drivers/net/ethernet/freescale/fec.c:1337:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_alloc_buffers': drivers/net/ethernet/freescale/fec.c:1361:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_init': drivers/net/ethernet/freescale/fec.c:1631:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] Signed-off-by: Fabio Estevam Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index e3f3937..911d025 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -1332,7 +1332,7 @@ static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd) static void fec_enet_free_buffers(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); - int i; + unsigned int i; struct sk_buff *skb; struct bufdesc *bdp; @@ -1356,7 +1356,7 @@ static void fec_enet_free_buffers(struct net_device *ndev) static int fec_enet_alloc_buffers(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); - int i; + unsigned int i; struct sk_buff *skb; struct bufdesc *bdp; @@ -1598,7 +1598,7 @@ static int fec_enet_init(struct net_device *ndev) struct fec_enet_private *fep = netdev_priv(ndev); struct bufdesc *cbd_base; struct bufdesc *bdp; - int i; + unsigned int i; /* Allocate memory for buffer descriptors. */ cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma, -- cgit v1.1 From f046f89a99ccfd9408b94c653374ff3065c7edb3 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 20 Mar 2013 17:21:24 +0000 Subject: dm thin: fix discard corruption Fix a bug in dm_btree_remove that could leave leaf values with incorrect reference counts. The effect of this was that removal of a shared block could result in the space maps thinking the block was no longer used. More concretely, if you have a thin device and a snapshot of it, sending a discard to a shared region of the thin could corrupt the snapshot. Thinp uses a 2-level nested btree to store it's mappings. This first level is indexed by thin device, and the second level by logical block. Often when we're removing an entry in this mapping tree we need to rebalance nodes, which can involve shadowing them, possibly creating a copy if the block is shared. If we do create a copy then children of that node need to have their reference counts incremented. In this way reference counts percolate down the tree as shared trees diverge. The rebalance functions were incrementing the children at the appropriate time, but they were always assuming the children were internal nodes. This meant the leaf values (in our case packed block/flags entries) were not being incremented. Cc: stable@vger.kernel.org Signed-off-by: Joe Thornber Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 4 +-- drivers/md/persistent-data/dm-btree-remove.c | 46 +++++++++++++++------------- 2 files changed, 26 insertions(+), 24 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 009339d..ab95e5f 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2544,7 +2544,7 @@ static struct target_type pool_target = { .name = "thin-pool", .features = DM_TARGET_SINGLETON | DM_TARGET_ALWAYS_WRITEABLE | DM_TARGET_IMMUTABLE, - .version = {1, 6, 1}, + .version = {1, 7, 0}, .module = THIS_MODULE, .ctr = pool_ctr, .dtr = pool_dtr, @@ -2831,7 +2831,7 @@ static int thin_iterate_devices(struct dm_target *ti, static struct target_type thin_target = { .name = "thin", - .version = {1, 7, 1}, + .version = {1, 8, 0}, .module = THIS_MODULE, .ctr = thin_ctr, .dtr = thin_dtr, diff --git a/drivers/md/persistent-data/dm-btree-remove.c b/drivers/md/persistent-data/dm-btree-remove.c index c4f2813..b88757c 100644 --- a/drivers/md/persistent-data/dm-btree-remove.c +++ b/drivers/md/persistent-data/dm-btree-remove.c @@ -139,15 +139,8 @@ struct child { struct btree_node *n; }; -static struct dm_btree_value_type le64_type = { - .context = NULL, - .size = sizeof(__le64), - .inc = NULL, - .dec = NULL, - .equal = NULL -}; - -static int init_child(struct dm_btree_info *info, struct btree_node *parent, +static int init_child(struct dm_btree_info *info, struct dm_btree_value_type *vt, + struct btree_node *parent, unsigned index, struct child *result) { int r, inc; @@ -164,7 +157,7 @@ static int init_child(struct dm_btree_info *info, struct btree_node *parent, result->n = dm_block_data(result->block); if (inc) - inc_children(info->tm, result->n, &le64_type); + inc_children(info->tm, result->n, vt); *((__le64 *) value_ptr(parent, index)) = cpu_to_le64(dm_block_location(result->block)); @@ -236,7 +229,7 @@ static void __rebalance2(struct dm_btree_info *info, struct btree_node *parent, } static int rebalance2(struct shadow_spine *s, struct dm_btree_info *info, - unsigned left_index) + struct dm_btree_value_type *vt, unsigned left_index) { int r; struct btree_node *parent; @@ -244,11 +237,11 @@ static int rebalance2(struct shadow_spine *s, struct dm_btree_info *info, parent = dm_block_data(shadow_current(s)); - r = init_child(info, parent, left_index, &left); + r = init_child(info, vt, parent, left_index, &left); if (r) return r; - r = init_child(info, parent, left_index + 1, &right); + r = init_child(info, vt, parent, left_index + 1, &right); if (r) { exit_child(info, &left); return r; @@ -368,7 +361,7 @@ static void __rebalance3(struct dm_btree_info *info, struct btree_node *parent, } static int rebalance3(struct shadow_spine *s, struct dm_btree_info *info, - unsigned left_index) + struct dm_btree_value_type *vt, unsigned left_index) { int r; struct btree_node *parent = dm_block_data(shadow_current(s)); @@ -377,17 +370,17 @@ static int rebalance3(struct shadow_spine *s, struct dm_btree_info *info, /* * FIXME: fill out an array? */ - r = init_child(info, parent, left_index, &left); + r = init_child(info, vt, parent, left_index, &left); if (r) return r; - r = init_child(info, parent, left_index + 1, ¢er); + r = init_child(info, vt, parent, left_index + 1, ¢er); if (r) { exit_child(info, &left); return r; } - r = init_child(info, parent, left_index + 2, &right); + r = init_child(info, vt, parent, left_index + 2, &right); if (r) { exit_child(info, &left); exit_child(info, ¢er); @@ -434,7 +427,8 @@ static int get_nr_entries(struct dm_transaction_manager *tm, } static int rebalance_children(struct shadow_spine *s, - struct dm_btree_info *info, uint64_t key) + struct dm_btree_info *info, + struct dm_btree_value_type *vt, uint64_t key) { int i, r, has_left_sibling, has_right_sibling; uint32_t child_entries; @@ -472,13 +466,13 @@ static int rebalance_children(struct shadow_spine *s, has_right_sibling = i < (le32_to_cpu(n->header.nr_entries) - 1); if (!has_left_sibling) - r = rebalance2(s, info, i); + r = rebalance2(s, info, vt, i); else if (!has_right_sibling) - r = rebalance2(s, info, i - 1); + r = rebalance2(s, info, vt, i - 1); else - r = rebalance3(s, info, i - 1); + r = rebalance3(s, info, vt, i - 1); return r; } @@ -529,7 +523,7 @@ static int remove_raw(struct shadow_spine *s, struct dm_btree_info *info, if (le32_to_cpu(n->header.flags) & LEAF_NODE) return do_leaf(n, key, index); - r = rebalance_children(s, info, key); + r = rebalance_children(s, info, vt, key); if (r) break; @@ -550,6 +544,14 @@ static int remove_raw(struct shadow_spine *s, struct dm_btree_info *info, return r; } +static struct dm_btree_value_type le64_type = { + .context = NULL, + .size = sizeof(__le64), + .inc = NULL, + .dec = NULL, + .equal = NULL +}; + int dm_btree_remove(struct dm_btree_info *info, dm_block_t root, uint64_t *keys, dm_block_t *new_root) { -- cgit v1.1 From 58051b94e05a59c4d34f9f1a441af40894817c59 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 20 Mar 2013 17:21:25 +0000 Subject: dm thin: fix non power of two discard granularity calc Fix a discard granularity calculation to work for non power of 2 block sizes. In order for thinp to passdown discard bios to the underlying data device, the data device must have a discard granularity that is a factor of the thinp block size. Originally this check was done by using bitops since the block_size was known to be a power of two. Introduced by commit f13945d75730081830b6f3360266950e2b7c9067 ("dm thin: support a non power of 2 discard_granularity"). Signed-off-by: Joe Thornber Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index ab95e5f..004ad165 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1577,6 +1577,11 @@ static bool data_dev_supports_discard(struct pool_c *pt) return q && blk_queue_discard(q); } +static bool is_factor(sector_t block_size, uint32_t n) +{ + return !sector_div(block_size, n); +} + /* * If discard_passdown was enabled verify that the data device * supports discards. Disable discard_passdown if not. @@ -1602,7 +1607,7 @@ static void disable_passdown_if_not_supported(struct pool_c *pt) else if (data_limits->discard_granularity > block_size) reason = "discard granularity larger than a block"; - else if (block_size & (data_limits->discard_granularity - 1)) + else if (!is_factor(block_size, data_limits->discard_granularity)) reason = "discard granularity not a factor of block size"; if (reason) { -- cgit v1.1 From 3b6b7813b198b578aa7e04e4047ddb8225c37b7f Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Wed, 20 Mar 2013 17:21:25 +0000 Subject: dm verity: avoid deadlock A deadlock was found in the prefetch code in the dm verity map function. This patch fixes this by transferring the prefetch to a worker thread and skipping it completely if kmalloc fails. If generic_make_request is called recursively, it queues the I/O request on the current->bio_list without making the I/O request and returns. The routine making the recursive call cannot wait for the I/O to complete. The deadlock occurs when one thread grabs the bufio_client mutex and waits for an I/O to complete but the I/O is queued on another thread's current->bio_list and is waiting to get the mutex held by the first thread. The fix recognises that prefetching is not essential. If memory can be allocated, it queues the prefetch request to the worker thread, but if not, it does nothing. Signed-off-by: Paul Taysom Signed-off-by: Mikulas Patocka Signed-off-by: Alasdair G Kergon Cc: stable@kernel.org --- drivers/md/dm-bufio.c | 2 ++ drivers/md/dm-verity.c | 39 ++++++++++++++++++++++++++++++++++----- 2 files changed, 36 insertions(+), 5 deletions(-) diff --git a/drivers/md/dm-bufio.c b/drivers/md/dm-bufio.c index 3c955e1..c608313 100644 --- a/drivers/md/dm-bufio.c +++ b/drivers/md/dm-bufio.c @@ -1025,6 +1025,8 @@ void dm_bufio_prefetch(struct dm_bufio_client *c, { struct blk_plug plug; + BUG_ON(dm_bufio_in_request()); + blk_start_plug(&plug); dm_bufio_lock(c); diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c index 6ad5383..a746f1d 100644 --- a/drivers/md/dm-verity.c +++ b/drivers/md/dm-verity.c @@ -93,6 +93,13 @@ struct dm_verity_io { */ }; +struct dm_verity_prefetch_work { + struct work_struct work; + struct dm_verity *v; + sector_t block; + unsigned n_blocks; +}; + static struct shash_desc *io_hash_desc(struct dm_verity *v, struct dm_verity_io *io) { return (struct shash_desc *)(io + 1); @@ -424,15 +431,18 @@ static void verity_end_io(struct bio *bio, int error) * The root buffer is not prefetched, it is assumed that it will be cached * all the time. */ -static void verity_prefetch_io(struct dm_verity *v, struct dm_verity_io *io) +static void verity_prefetch_io(struct work_struct *work) { + struct dm_verity_prefetch_work *pw = + container_of(work, struct dm_verity_prefetch_work, work); + struct dm_verity *v = pw->v; int i; for (i = v->levels - 2; i >= 0; i--) { sector_t hash_block_start; sector_t hash_block_end; - verity_hash_at_level(v, io->block, i, &hash_block_start, NULL); - verity_hash_at_level(v, io->block + io->n_blocks - 1, i, &hash_block_end, NULL); + verity_hash_at_level(v, pw->block, i, &hash_block_start, NULL); + verity_hash_at_level(v, pw->block + pw->n_blocks - 1, i, &hash_block_end, NULL); if (!i) { unsigned cluster = ACCESS_ONCE(dm_verity_prefetch_cluster); @@ -452,6 +462,25 @@ no_prefetch_cluster: dm_bufio_prefetch(v->bufio, hash_block_start, hash_block_end - hash_block_start + 1); } + + kfree(pw); +} + +static void verity_submit_prefetch(struct dm_verity *v, struct dm_verity_io *io) +{ + struct dm_verity_prefetch_work *pw; + + pw = kmalloc(sizeof(struct dm_verity_prefetch_work), + GFP_NOIO | __GFP_NORETRY | __GFP_NOMEMALLOC | __GFP_NOWARN); + + if (!pw) + return; + + INIT_WORK(&pw->work, verity_prefetch_io); + pw->v = v; + pw->block = io->block; + pw->n_blocks = io->n_blocks; + queue_work(v->verify_wq, &pw->work); } /* @@ -498,7 +527,7 @@ static int verity_map(struct dm_target *ti, struct bio *bio) memcpy(io->io_vec, bio_iovec(bio), io->io_vec_size * sizeof(struct bio_vec)); - verity_prefetch_io(v, io); + verity_submit_prefetch(v, io); generic_make_request(bio); @@ -858,7 +887,7 @@ bad: static struct target_type verity_target = { .name = "verity", - .version = {1, 1, 1}, + .version = {1, 2, 0}, .module = THIS_MODULE, .ctr = verity_ctr, .dtr = verity_dtr, -- cgit v1.1 From 414dd67d50a6b9a11af23bbb68e8fae13d726c8b Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 20 Mar 2013 17:21:25 +0000 Subject: dm cache: avoid 64 bit division on 32 bit Squash various 32bit link errors. >> on i386: >> drivers/built-in.o: In function `is_discarded_oblock': >> dm-cache-target.c:(.text+0x1ea28e): undefined reference to `__udivdi3' ... Reported-by: Randy Dunlap Signed-off-by: Joe Thornber Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 0f4e84b..5ad227f 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -158,7 +158,7 @@ struct cache { /* * origin_blocks entries, discarded if set. */ - sector_t discard_block_size; /* a power of 2 times sectors per block */ + uint32_t discard_block_size; /* a power of 2 times sectors per block */ dm_dblock_t discard_nr_blocks; unsigned long *discard_bitset; @@ -412,17 +412,24 @@ static bool block_size_is_power_of_two(struct cache *cache) return cache->sectors_per_block_shift >= 0; } +static dm_block_t block_div(dm_block_t b, uint32_t n) +{ + do_div(b, n); + + return b; +} + static dm_dblock_t oblock_to_dblock(struct cache *cache, dm_oblock_t oblock) { - sector_t discard_blocks = cache->discard_block_size; + uint32_t discard_blocks = cache->discard_block_size; dm_block_t b = from_oblock(oblock); if (!block_size_is_power_of_two(cache)) - (void) sector_div(discard_blocks, cache->sectors_per_block); + discard_blocks = discard_blocks / cache->sectors_per_block; else discard_blocks >>= cache->sectors_per_block_shift; - (void) sector_div(b, discard_blocks); + b = block_div(b, discard_blocks); return to_dblock(b); } @@ -1002,7 +1009,7 @@ static void process_discard_bio(struct cache *cache, struct bio *bio) dm_block_t end_block = bio->bi_sector + bio_sectors(bio); dm_block_t b; - (void) sector_div(end_block, cache->discard_block_size); + end_block = block_div(end_block, cache->discard_block_size); for (b = start_block; b < end_block; b++) set_discard(cache, to_dblock(b)); @@ -1835,7 +1842,7 @@ static int cache_create(struct cache_args *ca, struct cache **result) /* FIXME: factor out this whole section */ origin_blocks = cache->origin_sectors = ca->origin_sectors; - (void) sector_div(origin_blocks, ca->block_size); + origin_blocks = block_div(origin_blocks, ca->block_size); cache->origin_blocks = to_oblock(origin_blocks); cache->sectors_per_block = ca->block_size; @@ -1848,7 +1855,7 @@ static int cache_create(struct cache_args *ca, struct cache **result) dm_block_t cache_size = ca->cache_sectors; cache->sectors_per_block_shift = -1; - (void) sector_div(cache_size, ca->block_size); + cache_size = block_div(cache_size, ca->block_size); cache->cache_size = to_cblock(cache_size); } else { cache->sectors_per_block_shift = __ffs(ca->block_size); -- cgit v1.1 From 617a0b89da4898d4cc990c9eb4bc9c0591c538a5 Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Wed, 20 Mar 2013 17:21:26 +0000 Subject: dm cache: detect cache_create failure Return error if cache_create() fails. A missing return check made cache_ctr continue even after an error in cache_create() resulting in the cache object being destroyed. So a simple failure like an odd number of cache policy config value arguments would result in an oops. Signed-off-by: Heinz Mauelshagen Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 5ad227f..76cc910 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2009,6 +2009,8 @@ static int cache_ctr(struct dm_target *ti, unsigned argc, char **argv) goto out; r = cache_create(ca, &cache); + if (r) + goto out; r = copy_ctr_args(cache, argc - 3, (const char **)argv + 3); if (r) { -- cgit v1.1 From b978440b8db901aba0c4cd38c7c841c9b5cd9a7e Mon Sep 17 00:00:00 2001 From: Heinz Mauelshagen Date: Wed, 20 Mar 2013 17:21:26 +0000 Subject: dm cache: avoid calling policy destructor twice on error If the cache policy's config values are not able to be set we must set the policy to NULL after destroying it in create_cache_policy() so we don't attempt to destroy it a second time later. Signed-off-by: Heinz Mauelshagen Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 76cc910..79ac8603 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -1763,8 +1763,11 @@ static int create_cache_policy(struct cache *cache, struct cache_args *ca, } r = set_config_values(cache->policy, ca->policy_argc, ca->policy_argv); - if (r) + if (r) { + *error = "Error setting cache policy's config values"; dm_cache_policy_destroy(cache->policy); + cache->policy = NULL; + } return r; } -- cgit v1.1 From 79ed9caffc9fff67aa64fd683e791aa70f1bcb51 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 20 Mar 2013 17:21:27 +0000 Subject: dm cache: metadata clear dirty bits on clean shutdown When writing the dirty bitset to the metadata device on a clean shutdown, clear the dirty bits. Previously they were left indicating the cache was dirty. This led to confusion about whether there really was dirty data in the cache or not. (This was a harmless bug.) Reported-by: Darrick J. Wong Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-metadata.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c index fbd3625..1bb9180 100644 --- a/drivers/md/dm-cache-metadata.c +++ b/drivers/md/dm-cache-metadata.c @@ -979,7 +979,7 @@ static int __dirty(struct dm_cache_metadata *cmd, dm_cblock_t cblock, bool dirty /* nothing to be done */ return 0; - value = pack_value(oblock, flags | (dirty ? M_DIRTY : 0)); + value = pack_value(oblock, (flags & ~M_DIRTY) | (dirty ? M_DIRTY : 0)); __dm_bless_for_disk(&value); r = dm_array_set_value(&cmd->info, cmd->root, from_cblock(cblock), -- cgit v1.1 From e2e74d617eadc15f601983270c4f4a6935c5a943 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Wed, 20 Mar 2013 17:21:27 +0000 Subject: dm cache: fix race in writethrough implementation We have found a race in the optimisation used in the dm cache writethrough implementation. Currently, dm core sends the cache target two bios, one for the origin device and one for the cache device and these are processed in parallel. This patch avoids the race by changing the code back to a simpler (slower) implementation which processes the two writes in series, one after the other, until we can develop a complete fix for the problem. When the cache is in writethrough mode it needs to send WRITE bios to both the origin and cache devices. Previously we've been implementing this by having dm core query the cache target on every write to find out how many copies of the bio it wants. The cache will ask for two bios if the block is in the cache, and one otherwise. Then main problem with this is it's racey. At the time this check is made the bio hasn't yet been submitted and so isn't being taken into account when quiescing a block for migration (promotion or demotion). This means a single bio may be submitted when two were needed because the block has since been promoted to the cache (catastrophic), or two bios where only one is needed (harmless). I really don't want to start entering bios into the quiescing system (deferred_set) in the get_num_write_bios callback. Instead this patch simplifies things; only one bio is submitted by the core, this is first written to the origin and then the cache device in series. Obviously this will have a latency impact. deferred_writethrough_bios is introduced to record bios that must be later issued to the cache device from the worker thread. This deferred submission, after the origin bio completes, is required given that we're in interrupt context (writethrough_endio). Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 138 +++++++++++++++++++++++++++---------------- 1 file changed, 88 insertions(+), 50 deletions(-) diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 79ac8603..ff267db6 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -142,6 +142,7 @@ struct cache { spinlock_t lock; struct bio_list deferred_bios; struct bio_list deferred_flush_bios; + struct bio_list deferred_writethrough_bios; struct list_head quiesced_migrations; struct list_head completed_migrations; struct list_head need_commit_migrations; @@ -199,6 +200,11 @@ struct per_bio_data { bool tick:1; unsigned req_nr:2; struct dm_deferred_entry *all_io_entry; + + /* writethrough fields */ + struct cache *cache; + dm_cblock_t cblock; + bio_end_io_t *saved_bi_end_io; }; struct dm_cache_migration { @@ -616,6 +622,56 @@ static void issue(struct cache *cache, struct bio *bio) spin_unlock_irqrestore(&cache->lock, flags); } +static void defer_writethrough_bio(struct cache *cache, struct bio *bio) +{ + unsigned long flags; + + spin_lock_irqsave(&cache->lock, flags); + bio_list_add(&cache->deferred_writethrough_bios, bio); + spin_unlock_irqrestore(&cache->lock, flags); + + wake_worker(cache); +} + +static void writethrough_endio(struct bio *bio, int err) +{ + struct per_bio_data *pb = get_per_bio_data(bio); + bio->bi_end_io = pb->saved_bi_end_io; + + if (err) { + bio_endio(bio, err); + return; + } + + remap_to_cache(pb->cache, bio, pb->cblock); + + /* + * We can't issue this bio directly, since we're in interrupt + * context. So it get's put on a bio list for processing by the + * worker thread. + */ + defer_writethrough_bio(pb->cache, bio); +} + +/* + * When running in writethrough mode we need to send writes to clean blocks + * to both the cache and origin devices. In future we'd like to clone the + * bio and send them in parallel, but for now we're doing them in + * series as this is easier. + */ +static void remap_to_origin_then_cache(struct cache *cache, struct bio *bio, + dm_oblock_t oblock, dm_cblock_t cblock) +{ + struct per_bio_data *pb = get_per_bio_data(bio); + + pb->cache = cache; + pb->cblock = cblock; + pb->saved_bi_end_io = bio->bi_end_io; + bio->bi_end_io = writethrough_endio; + + remap_to_origin_clear_discard(pb->cache, bio, oblock); +} + /*---------------------------------------------------------------- * Migration processing * @@ -1077,14 +1133,9 @@ static void process_bio(struct cache *cache, struct prealloc *structs, inc_hit_counter(cache, bio); pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds); - if (is_writethrough_io(cache, bio, lookup_result.cblock)) { - /* - * No need to mark anything dirty in write through mode. - */ - pb->req_nr == 0 ? - remap_to_cache(cache, bio, lookup_result.cblock) : - remap_to_origin_clear_discard(cache, bio, block); - } else + if (is_writethrough_io(cache, bio, lookup_result.cblock)) + remap_to_origin_then_cache(cache, bio, block, lookup_result.cblock); + else remap_to_cache_dirty(cache, bio, block, lookup_result.cblock); issue(cache, bio); @@ -1093,17 +1144,8 @@ static void process_bio(struct cache *cache, struct prealloc *structs, case POLICY_MISS: inc_miss_counter(cache, bio); pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds); - - if (pb->req_nr != 0) { - /* - * This is a duplicate writethrough io that is no - * longer needed because the block has been demoted. - */ - bio_endio(bio, 0); - } else { - remap_to_origin_clear_discard(cache, bio, block); - issue(cache, bio); - } + remap_to_origin_clear_discard(cache, bio, block); + issue(cache, bio); break; case POLICY_NEW: @@ -1224,6 +1266,23 @@ static void process_deferred_flush_bios(struct cache *cache, bool submit_bios) submit_bios ? generic_make_request(bio) : bio_io_error(bio); } +static void process_deferred_writethrough_bios(struct cache *cache) +{ + unsigned long flags; + struct bio_list bios; + struct bio *bio; + + bio_list_init(&bios); + + spin_lock_irqsave(&cache->lock, flags); + bio_list_merge(&bios, &cache->deferred_writethrough_bios); + bio_list_init(&cache->deferred_writethrough_bios); + spin_unlock_irqrestore(&cache->lock, flags); + + while ((bio = bio_list_pop(&bios))) + generic_make_request(bio); +} + static void writeback_some_dirty_blocks(struct cache *cache) { int r = 0; @@ -1320,6 +1379,7 @@ static int more_work(struct cache *cache) else return !bio_list_empty(&cache->deferred_bios) || !bio_list_empty(&cache->deferred_flush_bios) || + !bio_list_empty(&cache->deferred_writethrough_bios) || !list_empty(&cache->quiesced_migrations) || !list_empty(&cache->completed_migrations) || !list_empty(&cache->need_commit_migrations); @@ -1338,6 +1398,8 @@ static void do_worker(struct work_struct *ws) writeback_some_dirty_blocks(cache); + process_deferred_writethrough_bios(cache); + if (commit_if_needed(cache)) { process_deferred_flush_bios(cache, false); @@ -1803,8 +1865,6 @@ static sector_t calculate_discard_block_size(sector_t cache_block_size, #define DEFAULT_MIGRATION_THRESHOLD (2048 * 100) -static unsigned cache_num_write_bios(struct dm_target *ti, struct bio *bio); - static int cache_create(struct cache_args *ca, struct cache **result) { int r = 0; @@ -1831,9 +1891,6 @@ static int cache_create(struct cache_args *ca, struct cache **result) memcpy(&cache->features, &ca->features, sizeof(cache->features)); - if (cache->features.write_through) - ti->num_write_bios = cache_num_write_bios; - cache->callbacks.congested_fn = cache_is_congested; dm_table_add_target_callbacks(ti->table, &cache->callbacks); @@ -1883,6 +1940,7 @@ static int cache_create(struct cache_args *ca, struct cache **result) spin_lock_init(&cache->lock); bio_list_init(&cache->deferred_bios); bio_list_init(&cache->deferred_flush_bios); + bio_list_init(&cache->deferred_writethrough_bios); INIT_LIST_HEAD(&cache->quiesced_migrations); INIT_LIST_HEAD(&cache->completed_migrations); INIT_LIST_HEAD(&cache->need_commit_migrations); @@ -2028,20 +2086,6 @@ out: return r; } -static unsigned cache_num_write_bios(struct dm_target *ti, struct bio *bio) -{ - int r; - struct cache *cache = ti->private; - dm_oblock_t block = get_bio_block(cache, bio); - dm_cblock_t cblock; - - r = policy_lookup(cache->policy, block, &cblock); - if (r < 0) - return 2; /* assume the worst */ - - return (!r && !is_dirty(cache, cblock)) ? 2 : 1; -} - static int cache_map(struct dm_target *ti, struct bio *bio) { struct cache *cache = ti->private; @@ -2109,18 +2153,12 @@ static int cache_map(struct dm_target *ti, struct bio *bio) inc_hit_counter(cache, bio); pb->all_io_entry = dm_deferred_entry_inc(cache->all_io_ds); - if (is_writethrough_io(cache, bio, lookup_result.cblock)) { - /* - * No need to mark anything dirty in write through mode. - */ - pb->req_nr == 0 ? - remap_to_cache(cache, bio, lookup_result.cblock) : - remap_to_origin_clear_discard(cache, bio, block); - cell_defer(cache, cell, false); - } else { + if (is_writethrough_io(cache, bio, lookup_result.cblock)) + remap_to_origin_then_cache(cache, bio, block, lookup_result.cblock); + else remap_to_cache_dirty(cache, bio, block, lookup_result.cblock); - cell_defer(cache, cell, false); - } + + cell_defer(cache, cell, false); break; case POLICY_MISS: @@ -2547,7 +2585,7 @@ static void cache_io_hints(struct dm_target *ti, struct queue_limits *limits) static struct target_type cache_target = { .name = "cache", - .version = {1, 0, 0}, + .version = {1, 1, 0}, .module = THIS_MODULE, .ctr = cache_ctr, .dtr = cache_dtr, -- cgit v1.1 From 4e7f506f6429636115e2f58f9f97089acc62524a Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Wed, 20 Mar 2013 17:21:27 +0000 Subject: dm cache: policy change version from string to integer set Separate dm cache policy version string into 3 unsigned numbers corresponding to major, minor and patchlevel and store them at the end of the on-disk metadata so we know which version of the policy generated the hints in case a future version wants to use them differently. Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-metadata.c | 15 +++++++++++++-- drivers/md/dm-cache-policy-cleaner.c | 7 +++++-- drivers/md/dm-cache-policy-internal.h | 2 ++ drivers/md/dm-cache-policy-mq.c | 8 ++++++-- drivers/md/dm-cache-policy.c | 8 ++++++++ drivers/md/dm-cache-policy.h | 2 ++ 6 files changed, 36 insertions(+), 6 deletions(-) diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c index 1bb9180..74213d1 100644 --- a/drivers/md/dm-cache-metadata.c +++ b/drivers/md/dm-cache-metadata.c @@ -83,6 +83,8 @@ struct cache_disk_superblock { __le32 read_misses; __le32 write_hits; __le32 write_misses; + + __le32 policy_version[CACHE_POLICY_VERSION_SIZE]; } __packed; struct dm_cache_metadata { @@ -109,6 +111,7 @@ struct dm_cache_metadata { bool clean_when_opened:1; char policy_name[CACHE_POLICY_NAME_SIZE]; + unsigned policy_version[CACHE_POLICY_VERSION_SIZE]; size_t policy_hint_size; struct dm_cache_statistics stats; }; @@ -268,7 +271,8 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd) memset(disk_super->uuid, 0, sizeof(disk_super->uuid)); disk_super->magic = cpu_to_le64(CACHE_SUPERBLOCK_MAGIC); disk_super->version = cpu_to_le32(CACHE_VERSION); - memset(disk_super->policy_name, 0, CACHE_POLICY_NAME_SIZE); + memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name)); + memset(disk_super->policy_version, 0, sizeof(disk_super->policy_version)); disk_super->policy_hint_size = 0; r = dm_sm_copy_root(cmd->metadata_sm, &disk_super->metadata_space_map_root, @@ -284,7 +288,6 @@ static int __write_initial_superblock(struct dm_cache_metadata *cmd) disk_super->metadata_block_size = cpu_to_le32(DM_CACHE_METADATA_BLOCK_SIZE >> SECTOR_SHIFT); disk_super->data_block_size = cpu_to_le32(cmd->data_block_size); disk_super->cache_blocks = cpu_to_le32(0); - memset(disk_super->policy_name, 0, sizeof(disk_super->policy_name)); disk_super->read_hits = cpu_to_le32(0); disk_super->read_misses = cpu_to_le32(0); @@ -478,6 +481,9 @@ static void read_superblock_fields(struct dm_cache_metadata *cmd, cmd->data_block_size = le32_to_cpu(disk_super->data_block_size); cmd->cache_blocks = to_cblock(le32_to_cpu(disk_super->cache_blocks)); strncpy(cmd->policy_name, disk_super->policy_name, sizeof(cmd->policy_name)); + cmd->policy_version[0] = le32_to_cpu(disk_super->policy_version[0]); + cmd->policy_version[1] = le32_to_cpu(disk_super->policy_version[1]); + cmd->policy_version[2] = le32_to_cpu(disk_super->policy_version[2]); cmd->policy_hint_size = le32_to_cpu(disk_super->policy_hint_size); cmd->stats.read_hits = le32_to_cpu(disk_super->read_hits); @@ -572,6 +578,9 @@ static int __commit_transaction(struct dm_cache_metadata *cmd, disk_super->discard_nr_blocks = cpu_to_le64(from_dblock(cmd->discard_nr_blocks)); disk_super->cache_blocks = cpu_to_le32(from_cblock(cmd->cache_blocks)); strncpy(disk_super->policy_name, cmd->policy_name, sizeof(disk_super->policy_name)); + disk_super->policy_version[0] = cpu_to_le32(cmd->policy_version[0]); + disk_super->policy_version[1] = cpu_to_le32(cmd->policy_version[1]); + disk_super->policy_version[2] = cpu_to_le32(cmd->policy_version[2]); disk_super->read_hits = cpu_to_le32(cmd->stats.read_hits); disk_super->read_misses = cpu_to_le32(cmd->stats.read_misses); @@ -1070,6 +1079,7 @@ static int begin_hints(struct dm_cache_metadata *cmd, struct dm_cache_policy *po __le32 value; size_t hint_size; const char *policy_name = dm_cache_policy_get_name(policy); + const unsigned *policy_version = dm_cache_policy_get_version(policy); if (!policy_name[0] || (strlen(policy_name) > sizeof(cmd->policy_name) - 1)) @@ -1077,6 +1087,7 @@ static int begin_hints(struct dm_cache_metadata *cmd, struct dm_cache_policy *po if (strcmp(cmd->policy_name, policy_name)) { strncpy(cmd->policy_name, policy_name, sizeof(cmd->policy_name)); + memcpy(cmd->policy_version, policy_version, sizeof(cmd->policy_version)); hint_size = dm_cache_policy_get_hint_size(policy); if (!hint_size) diff --git a/drivers/md/dm-cache-policy-cleaner.c b/drivers/md/dm-cache-policy-cleaner.c index cc05d70..b04d1f9 100644 --- a/drivers/md/dm-cache-policy-cleaner.c +++ b/drivers/md/dm-cache-policy-cleaner.c @@ -17,7 +17,6 @@ /*----------------------------------------------------------------*/ #define DM_MSG_PREFIX "cache cleaner" -#define CLEANER_VERSION "1.0.0" /* Cache entry struct. */ struct wb_cache_entry { @@ -434,6 +433,7 @@ static struct dm_cache_policy *wb_create(dm_cblock_t cache_size, static struct dm_cache_policy_type wb_policy_type = { .name = "cleaner", + .version = {1, 0, 0}, .hint_size = 0, .owner = THIS_MODULE, .create = wb_create @@ -446,7 +446,10 @@ static int __init wb_init(void) if (r < 0) DMERR("register failed %d", r); else - DMINFO("version " CLEANER_VERSION " loaded"); + DMINFO("version %u.%u.%u loaded", + wb_policy_type.version[0], + wb_policy_type.version[1], + wb_policy_type.version[2]); return r; } diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h index 52a75be..0928abd 100644 --- a/drivers/md/dm-cache-policy-internal.h +++ b/drivers/md/dm-cache-policy-internal.h @@ -117,6 +117,8 @@ void dm_cache_policy_destroy(struct dm_cache_policy *p); */ const char *dm_cache_policy_get_name(struct dm_cache_policy *p); +const unsigned *dm_cache_policy_get_version(struct dm_cache_policy *p); + size_t dm_cache_policy_get_hint_size(struct dm_cache_policy *p); /*----------------------------------------------------------------*/ diff --git a/drivers/md/dm-cache-policy-mq.c b/drivers/md/dm-cache-policy-mq.c index 9641532..dc112a7 100644 --- a/drivers/md/dm-cache-policy-mq.c +++ b/drivers/md/dm-cache-policy-mq.c @@ -14,7 +14,6 @@ #include #define DM_MSG_PREFIX "cache-policy-mq" -#define MQ_VERSION "1.0.0" static struct kmem_cache *mq_entry_cache; @@ -1133,6 +1132,7 @@ bad_cache_alloc: static struct dm_cache_policy_type mq_policy_type = { .name = "mq", + .version = {1, 0, 0}, .hint_size = 4, .owner = THIS_MODULE, .create = mq_create @@ -1140,6 +1140,7 @@ static struct dm_cache_policy_type mq_policy_type = { static struct dm_cache_policy_type default_policy_type = { .name = "default", + .version = {1, 0, 0}, .hint_size = 4, .owner = THIS_MODULE, .create = mq_create @@ -1164,7 +1165,10 @@ static int __init mq_init(void) r = dm_cache_policy_register(&default_policy_type); if (!r) { - DMINFO("version " MQ_VERSION " loaded"); + DMINFO("version %u.%u.%u loaded", + mq_policy_type.version[0], + mq_policy_type.version[1], + mq_policy_type.version[2]); return 0; } diff --git a/drivers/md/dm-cache-policy.c b/drivers/md/dm-cache-policy.c index 2cbf5fd..21c03c5 100644 --- a/drivers/md/dm-cache-policy.c +++ b/drivers/md/dm-cache-policy.c @@ -150,6 +150,14 @@ const char *dm_cache_policy_get_name(struct dm_cache_policy *p) } EXPORT_SYMBOL_GPL(dm_cache_policy_get_name); +const unsigned *dm_cache_policy_get_version(struct dm_cache_policy *p) +{ + struct dm_cache_policy_type *t = p->private; + + return t->version; +} +EXPORT_SYMBOL_GPL(dm_cache_policy_get_version); + size_t dm_cache_policy_get_hint_size(struct dm_cache_policy *p) { struct dm_cache_policy_type *t = p->private; diff --git a/drivers/md/dm-cache-policy.h b/drivers/md/dm-cache-policy.h index f0f51b2..558bdfd 100644 --- a/drivers/md/dm-cache-policy.h +++ b/drivers/md/dm-cache-policy.h @@ -196,6 +196,7 @@ struct dm_cache_policy { * We maintain a little register of the different policy types. */ #define CACHE_POLICY_NAME_SIZE 16 +#define CACHE_POLICY_VERSION_SIZE 3 struct dm_cache_policy_type { /* For use by the register code only. */ @@ -206,6 +207,7 @@ struct dm_cache_policy_type { * what gets passed on the target line to select your policy. */ char name[CACHE_POLICY_NAME_SIZE]; + unsigned version[CACHE_POLICY_VERSION_SIZE]; /* * Policies may store a hint for each each cache block. -- cgit v1.1 From ea2dd8c1ed0becee9812cf0840a9cd553ed398fe Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Wed, 20 Mar 2013 17:21:28 +0000 Subject: dm cache: policy ignore hints if generated by different version When reading the dm cache metadata from disk, ignore the policy hints unless they were generated by the same major version number of the same policy module. The hints are considered to be private data belonging to the specific module that generated them and there is no requirement for them to make sense to different versions of the policy that generated them. Policy modules are all required to work fine if no previous hints are supplied (or if existing hints are lost). Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-metadata.c | 47 +++++++++++++++++++++++++++++++++--------- drivers/md/dm-cache-metadata.h | 2 +- drivers/md/dm-cache-target.c | 3 +-- 3 files changed, 39 insertions(+), 13 deletions(-) diff --git a/drivers/md/dm-cache-metadata.c b/drivers/md/dm-cache-metadata.c index 74213d1..83e995f 100644 --- a/drivers/md/dm-cache-metadata.c +++ b/drivers/md/dm-cache-metadata.c @@ -863,18 +863,43 @@ struct thunk { bool hints_valid; }; +static bool policy_unchanged(struct dm_cache_metadata *cmd, + struct dm_cache_policy *policy) +{ + const char *policy_name = dm_cache_policy_get_name(policy); + const unsigned *policy_version = dm_cache_policy_get_version(policy); + size_t policy_hint_size = dm_cache_policy_get_hint_size(policy); + + /* + * Ensure policy names match. + */ + if (strncmp(cmd->policy_name, policy_name, sizeof(cmd->policy_name))) + return false; + + /* + * Ensure policy major versions match. + */ + if (cmd->policy_version[0] != policy_version[0]) + return false; + + /* + * Ensure policy hint sizes match. + */ + if (cmd->policy_hint_size != policy_hint_size) + return false; + + return true; +} + static bool hints_array_initialized(struct dm_cache_metadata *cmd) { return cmd->hint_root && cmd->policy_hint_size; } static bool hints_array_available(struct dm_cache_metadata *cmd, - const char *policy_name) + struct dm_cache_policy *policy) { - bool policy_names_match = !strncmp(cmd->policy_name, policy_name, - sizeof(cmd->policy_name)); - - return cmd->clean_when_opened && policy_names_match && + return cmd->clean_when_opened && policy_unchanged(cmd, policy) && hints_array_initialized(cmd); } @@ -908,7 +933,8 @@ static int __load_mapping(void *context, uint64_t cblock, void *leaf) return r; } -static int __load_mappings(struct dm_cache_metadata *cmd, const char *policy_name, +static int __load_mappings(struct dm_cache_metadata *cmd, + struct dm_cache_policy *policy, load_mapping_fn fn, void *context) { struct thunk thunk; @@ -918,18 +944,19 @@ static int __load_mappings(struct dm_cache_metadata *cmd, const char *policy_nam thunk.cmd = cmd; thunk.respect_dirty_flags = cmd->clean_when_opened; - thunk.hints_valid = hints_array_available(cmd, policy_name); + thunk.hints_valid = hints_array_available(cmd, policy); return dm_array_walk(&cmd->info, cmd->root, __load_mapping, &thunk); } -int dm_cache_load_mappings(struct dm_cache_metadata *cmd, const char *policy_name, +int dm_cache_load_mappings(struct dm_cache_metadata *cmd, + struct dm_cache_policy *policy, load_mapping_fn fn, void *context) { int r; down_read(&cmd->root_lock); - r = __load_mappings(cmd, policy_name, fn, context); + r = __load_mappings(cmd, policy, fn, context); up_read(&cmd->root_lock); return r; @@ -1085,7 +1112,7 @@ static int begin_hints(struct dm_cache_metadata *cmd, struct dm_cache_policy *po (strlen(policy_name) > sizeof(cmd->policy_name) - 1)) return -EINVAL; - if (strcmp(cmd->policy_name, policy_name)) { + if (!policy_unchanged(cmd, policy)) { strncpy(cmd->policy_name, policy_name, sizeof(cmd->policy_name)); memcpy(cmd->policy_version, policy_version, sizeof(cmd->policy_version)); diff --git a/drivers/md/dm-cache-metadata.h b/drivers/md/dm-cache-metadata.h index 135864e..f45cef2 100644 --- a/drivers/md/dm-cache-metadata.h +++ b/drivers/md/dm-cache-metadata.h @@ -89,7 +89,7 @@ typedef int (*load_mapping_fn)(void *context, dm_oblock_t oblock, dm_cblock_t cblock, bool dirty, uint32_t hint, bool hint_valid); int dm_cache_load_mappings(struct dm_cache_metadata *cmd, - const char *policy_name, + struct dm_cache_policy *policy, load_mapping_fn fn, void *context); diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index ff267db6..66120bd 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -2369,8 +2369,7 @@ static int cache_preresume(struct dm_target *ti) } if (!cache->loaded_mappings) { - r = dm_cache_load_mappings(cache->cmd, - dm_cache_policy_get_name(cache->policy), + r = dm_cache_load_mappings(cache->cmd, cache->policy, load_mapping, cache); if (r) { DMERR("could not load cache mappings"); -- cgit v1.1 From eb49faa6a4703698fa5d8b304b01e7f59e7d1f11 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 15 Mar 2013 09:19:11 +0100 Subject: ALSA: hda - Fix abuse of snd_hda_lock_devices() for DSP loader The current DSP loader code abuses snd_hda_lock_devices() for ensuring the DSP loader not conflicting with the other normal operations. But this trick obviously doesn't work for the PM resume since the streams are kept opened there where snd_hda_lock_devices() returns -EBUSY. That means we need another lock mechanism instead of abuse. This patch provides the new lock state to azx_dev. Theoretically it's possible that the DSP loader conflicts with the stream that has been already assigned for another PCM. If it's running, the DSP loader should simply fail. If not -- it's the case for PM resume --, we should assign this stream temporarily to the DSP loader, and take it back to the PCM after finishing DSP loading. If the PCM is operated during the DSP loading, it should get an error, too. Reported-and-tested-by: Dylan Reid Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_intel.c | 132 ++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 109 insertions(+), 23 deletions(-) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 4cea6bb6..418bfc0 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -415,6 +415,8 @@ struct azx_dev { unsigned int opened :1; unsigned int running :1; unsigned int irq_pending :1; + unsigned int prepared:1; + unsigned int locked:1; /* * For VIA: * A flag to ensure DMA position is 0 @@ -426,8 +428,25 @@ struct azx_dev { struct timecounter azx_tc; struct cyclecounter azx_cc; + +#ifdef CONFIG_SND_HDA_DSP_LOADER + struct mutex dsp_mutex; +#endif }; +/* DSP lock helpers */ +#ifdef CONFIG_SND_HDA_DSP_LOADER +#define dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex) +#define dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex) +#define dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex) +#define dsp_is_locked(dev) ((dev)->locked) +#else +#define dsp_lock_init(dev) do {} while (0) +#define dsp_lock(dev) do {} while (0) +#define dsp_unlock(dev) do {} while (0) +#define dsp_is_locked(dev) 0 +#endif + /* CORB/RIRB */ struct azx_rb { u32 *buf; /* CORB/RIRB buffer @@ -527,6 +546,10 @@ struct azx { /* card list (for power_save trigger) */ struct list_head list; + +#ifdef CONFIG_SND_HDA_DSP_LOADER + struct azx_dev saved_azx_dev; +#endif }; #define CREATE_TRACE_POINTS @@ -1793,15 +1816,25 @@ azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream) dev = chip->capture_index_offset; nums = chip->capture_streams; } - for (i = 0; i < nums; i++, dev++) - if (!chip->azx_dev[dev].opened) { - res = &chip->azx_dev[dev]; - if (res->assigned_key == key) - break; + for (i = 0; i < nums; i++, dev++) { + struct azx_dev *azx_dev = &chip->azx_dev[dev]; + dsp_lock(azx_dev); + if (!azx_dev->opened && !dsp_is_locked(azx_dev)) { + res = azx_dev; + if (res->assigned_key == key) { + res->opened = 1; + res->assigned_key = key; + dsp_unlock(azx_dev); + return azx_dev; + } } + dsp_unlock(azx_dev); + } if (res) { + dsp_lock(res); res->opened = 1; res->assigned_key = key; + dsp_unlock(res); } return res; } @@ -2009,6 +2042,12 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream, struct azx_dev *azx_dev = get_azx_dev(substream); int ret; + dsp_lock(azx_dev); + if (dsp_is_locked(azx_dev)) { + ret = -EBUSY; + goto unlock; + } + mark_runtime_wc(chip, azx_dev, substream, false); azx_dev->bufsize = 0; azx_dev->period_bytes = 0; @@ -2016,8 +2055,10 @@ static int azx_pcm_hw_params(struct snd_pcm_substream *substream, ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); if (ret < 0) - return ret; + goto unlock; mark_runtime_wc(chip, azx_dev, substream, true); + unlock: + dsp_unlock(azx_dev); return ret; } @@ -2029,16 +2070,21 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream) struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream]; /* reset BDL address */ - azx_sd_writel(azx_dev, SD_BDLPL, 0); - azx_sd_writel(azx_dev, SD_BDLPU, 0); - azx_sd_writel(azx_dev, SD_CTL, 0); - azx_dev->bufsize = 0; - azx_dev->period_bytes = 0; - azx_dev->format_val = 0; + dsp_lock(azx_dev); + if (!dsp_is_locked(azx_dev)) { + azx_sd_writel(azx_dev, SD_BDLPL, 0); + azx_sd_writel(azx_dev, SD_BDLPU, 0); + azx_sd_writel(azx_dev, SD_CTL, 0); + azx_dev->bufsize = 0; + azx_dev->period_bytes = 0; + azx_dev->format_val = 0; + } snd_hda_codec_cleanup(apcm->codec, hinfo, substream); mark_runtime_wc(chip, azx_dev, substream, false); + azx_dev->prepared = 0; + dsp_unlock(azx_dev); return snd_pcm_lib_free_pages(substream); } @@ -2055,6 +2101,12 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream) snd_hda_spdif_out_of_nid(apcm->codec, hinfo->nid); unsigned short ctls = spdif ? spdif->ctls : 0; + dsp_lock(azx_dev); + if (dsp_is_locked(azx_dev)) { + err = -EBUSY; + goto unlock; + } + azx_stream_reset(chip, azx_dev); format_val = snd_hda_calc_stream_format(runtime->rate, runtime->channels, @@ -2065,7 +2117,8 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream) snd_printk(KERN_ERR SFX "%s: invalid format_val, rate=%d, ch=%d, format=%d\n", pci_name(chip->pci), runtime->rate, runtime->channels, runtime->format); - return -EINVAL; + err = -EINVAL; + goto unlock; } bufsize = snd_pcm_lib_buffer_bytes(substream); @@ -2084,7 +2137,7 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream) azx_dev->no_period_wakeup = runtime->no_period_wakeup; err = azx_setup_periods(chip, substream, azx_dev); if (err < 0) - return err; + goto unlock; } /* wallclk has 24Mhz clock source */ @@ -2101,8 +2154,14 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream) if ((chip->driver_caps & AZX_DCAPS_CTX_WORKAROUND) && stream_tag > chip->capture_streams) stream_tag -= chip->capture_streams; - return snd_hda_codec_prepare(apcm->codec, hinfo, stream_tag, + err = snd_hda_codec_prepare(apcm->codec, hinfo, stream_tag, azx_dev->format_val, substream); + + unlock: + if (!err) + azx_dev->prepared = 1; + dsp_unlock(azx_dev); + return err; } static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) @@ -2117,6 +2176,9 @@ static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) azx_dev = get_azx_dev(substream); trace_azx_pcm_trigger(chip, azx_dev, cmd); + if (dsp_is_locked(azx_dev) || !azx_dev->prepared) + return -EPIPE; + switch (cmd) { case SNDRV_PCM_TRIGGER_START: rstart = 1; @@ -2621,17 +2683,27 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format, struct azx_dev *azx_dev; int err; - if (snd_hda_lock_devices(bus)) - return -EBUSY; + azx_dev = azx_get_dsp_loader_dev(chip); + + dsp_lock(azx_dev); + spin_lock_irq(&chip->reg_lock); + if (azx_dev->running || azx_dev->locked) { + spin_unlock_irq(&chip->reg_lock); + err = -EBUSY; + goto unlock; + } + azx_dev->prepared = 0; + chip->saved_azx_dev = *azx_dev; + azx_dev->locked = 1; + spin_unlock_irq(&chip->reg_lock); err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV_SG, snd_dma_pci_data(chip->pci), byte_size, bufp); if (err < 0) - goto unlock; + goto err_alloc; mark_pages_wc(chip, bufp, true); - azx_dev = azx_get_dsp_loader_dev(chip); azx_dev->bufsize = byte_size; azx_dev->period_bytes = byte_size; azx_dev->format_val = format; @@ -2649,13 +2721,20 @@ static int azx_load_dsp_prepare(struct hda_bus *bus, unsigned int format, goto error; azx_setup_controller(chip, azx_dev); + dsp_unlock(azx_dev); return azx_dev->stream_tag; error: mark_pages_wc(chip, bufp, false); snd_dma_free_pages(bufp); -unlock: - snd_hda_unlock_devices(bus); + err_alloc: + spin_lock_irq(&chip->reg_lock); + if (azx_dev->opened) + *azx_dev = chip->saved_azx_dev; + azx_dev->locked = 0; + spin_unlock_irq(&chip->reg_lock); + unlock: + dsp_unlock(azx_dev); return err; } @@ -2677,9 +2756,10 @@ static void azx_load_dsp_cleanup(struct hda_bus *bus, struct azx *chip = bus->private_data; struct azx_dev *azx_dev = azx_get_dsp_loader_dev(chip); - if (!dmab->area) + if (!dmab->area || !azx_dev->locked) return; + dsp_lock(azx_dev); /* reset BDL address */ azx_sd_writel(azx_dev, SD_BDLPL, 0); azx_sd_writel(azx_dev, SD_BDLPU, 0); @@ -2692,7 +2772,12 @@ static void azx_load_dsp_cleanup(struct hda_bus *bus, snd_dma_free_pages(dmab); dmab->area = NULL; - snd_hda_unlock_devices(bus); + spin_lock_irq(&chip->reg_lock); + if (azx_dev->opened) + *azx_dev = chip->saved_azx_dev; + azx_dev->locked = 0; + spin_unlock_irq(&chip->reg_lock); + dsp_unlock(azx_dev); } #endif /* CONFIG_SND_HDA_DSP_LOADER */ @@ -3481,6 +3566,7 @@ static int azx_first_init(struct azx *chip) } for (i = 0; i < chip->num_streams; i++) { + dsp_lock_init(&chip->azx_dev[i]); /* allocate memory for the BDL for each stream */ err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), -- cgit v1.1 From 9d73adf431e093b23fb4990f1ade11283cb67a98 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 20 Mar 2013 08:19:32 +0000 Subject: fec: Fix the build as module Since commit ff43da86c69 (NET: FEC: dynamtic check DMA desc buff type) the following build error happens when CONFIG_FEC=m ERROR: "fec_ptp_init" [drivers/net/ethernet/freescale/fec.ko] undefined! ERROR: "fec_ptp_ioctl" [drivers/net/ethernet/freescale/fec.ko] undefined! ERROR: "fec_ptp_start_cyclecounter" [drivers/net/ethernet/freescale/fec.ko] undefined! Fix it by exporting the required fec_ptp symbols. Reported-by: Uwe Kleine-Koenig Signed-off-by: Fabio Estevam Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec_ptp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/freescale/fec_ptp.c b/drivers/net/ethernet/freescale/fec_ptp.c index 1f17ca0..0d8df40 100644 --- a/drivers/net/ethernet/freescale/fec_ptp.c +++ b/drivers/net/ethernet/freescale/fec_ptp.c @@ -128,6 +128,7 @@ void fec_ptp_start_cyclecounter(struct net_device *ndev) spin_unlock_irqrestore(&fep->tmreg_lock, flags); } +EXPORT_SYMBOL(fec_ptp_start_cyclecounter); /** * fec_ptp_adjfreq - adjust ptp cycle frequency @@ -318,6 +319,7 @@ int fec_ptp_ioctl(struct net_device *ndev, struct ifreq *ifr, int cmd) return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ? -EFAULT : 0; } +EXPORT_SYMBOL(fec_ptp_ioctl); /** * fec_time_keep - call timecounter_read every second to avoid timer overrun @@ -383,3 +385,4 @@ void fec_ptp_init(struct net_device *ndev, struct platform_device *pdev) pr_info("registered PHC device on %s\n", ndev->name); } } +EXPORT_SYMBOL(fec_ptp_init); -- cgit v1.1 From cf4ab538f1516606d3ae730dce15d6f33d96b7e1 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 8 Mar 2013 12:56:37 -0500 Subject: NFSv4: Fix the string length returned by the idmapper Functions like nfs_map_uid_to_name() and nfs_map_gid_to_group() are expected to return a string without any terminating NUL character. Regression introduced by commit 57e62324e469e092ecc6c94a7a86fe4bd6ac5172 (NFS: Store the legacy idmapper result in the keyring). Reported-by: Dave Chiluk Signed-off-by: Trond Myklebust Cc: Bryan Schumaker Cc: stable@vger.kernel.org [>=3.4] --- fs/nfs/idmap.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index dc0f98d..c516da5 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -726,9 +726,9 @@ out1: return ret; } -static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data) +static int nfs_idmap_instantiate(struct key *key, struct key *authkey, char *data, size_t datalen) { - return key_instantiate_and_link(key, data, strlen(data) + 1, + return key_instantiate_and_link(key, data, datalen, id_resolver_cache->thread_keyring, authkey); } @@ -738,6 +738,7 @@ static int nfs_idmap_read_and_verify_message(struct idmap_msg *im, struct key *key, struct key *authkey) { char id_str[NFS_UINT_MAXLEN]; + size_t len; int ret = -ENOKEY; /* ret = -ENOKEY */ @@ -747,13 +748,15 @@ static int nfs_idmap_read_and_verify_message(struct idmap_msg *im, case IDMAP_CONV_NAMETOID: if (strcmp(upcall->im_name, im->im_name) != 0) break; - sprintf(id_str, "%d", im->im_id); - ret = nfs_idmap_instantiate(key, authkey, id_str); + /* Note: here we store the NUL terminator too */ + len = sprintf(id_str, "%d", im->im_id) + 1; + ret = nfs_idmap_instantiate(key, authkey, id_str, len); break; case IDMAP_CONV_IDTONAME: if (upcall->im_id != im->im_id) break; - ret = nfs_idmap_instantiate(key, authkey, im->im_name); + len = strlen(im->im_name); + ret = nfs_idmap_instantiate(key, authkey, im->im_name, len); break; default: ret = -EINVAL; -- cgit v1.1 From 73214f5d9f33b79918b1f7babddd5c8af28dd23d Mon Sep 17 00:00:00 2001 From: Masatake YAMATO Date: Tue, 19 Mar 2013 01:47:28 +0000 Subject: thermal: shorten too long mcast group name The original name is too long. Signed-off-by: Masatake YAMATO Signed-off-by: David S. Miller --- include/linux/thermal.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/thermal.h b/include/linux/thermal.h index f0bd7f9..e3c0ae9 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -44,7 +44,7 @@ /* Adding event notification support elements */ #define THERMAL_GENL_FAMILY_NAME "thermal_event" #define THERMAL_GENL_VERSION 0x01 -#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" +#define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_grp" /* Default Thermal Governor */ #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) -- cgit v1.1 From d714aaf649460cbfd5e82e75520baa856b4fa0a0 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 20 Mar 2013 15:07:26 -0400 Subject: USB: EHCI: fix regression in QH unlinking This patch (as1670) fixes a regression caused by commit 6402c796d3b4205d3d7296157956c5100a05d7d6 (USB: EHCI: work around silicon bug in Intel's EHCI controllers). The workaround goes through two IAA cycles for each QH being unlinked. During the first cycle, the QH is not added to the async_iaa list (because it isn't fully gone from the hardware yet), which means that list will be empty. Unfortunately, I forgot to update the IAA watchdog timer routine. It thinks that an empty async_iaa list means the timer expiration was an error, which isn't true any more. This problem didn't show up during initial testing because the controllers being tested all had working IAA interrupts. But not all controllers do, and when the watchdog timer expires, the empty-list check prevents the second IAA cycle from starting. As a result, URB unlinks never complete. The check needs to be removed. Among the symptoms of the regression are processes stuck in D wait states and hangs during system shutdown. Signed-off-by: Alan Stern Reported-and-tested-by: Stephen Warren Reported-and-tested-by: Sven Joachim Reported-by: Andreas Bombe Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-timer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c index 20dbdcb..c3fa130 100644 --- a/drivers/usb/host/ehci-timer.c +++ b/drivers/usb/host/ehci-timer.c @@ -304,7 +304,7 @@ static void ehci_iaa_watchdog(struct ehci_hcd *ehci) * (a) SMP races against real IAA firing and retriggering, and * (b) clean HC shutdown, when IAA watchdog was pending. */ - if (ehci->async_iaa) { + if (1) { u32 cmd, status; /* If we get here, IAA is *REALLY* late. It's barely -- cgit v1.1 From 991f76f837bf22c5bb07261cfd86525a0a96650c Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 20 Mar 2013 23:25:24 +0800 Subject: sysfs: fix race between readdir and lseek While readdir() is running, lseek() may set filp->f_pos as zero, then may leave filp->private_data pointing to one sysfs_dirent object without holding its reference counter, so the sysfs_dirent object may be used after free in next readdir(). This patch holds inode->i_mutex to avoid the problem since the lock is always held in readdir path. Reported-by: Dave Jones Tested-by: Sasha Levin Cc: Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index 2fbdff6..c9e1660 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -1058,10 +1058,21 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir) return 0; } +static loff_t sysfs_dir_llseek(struct file *file, loff_t offset, int whence) +{ + struct inode *inode = file_inode(file); + loff_t ret; + + mutex_lock(&inode->i_mutex); + ret = generic_file_llseek(file, offset, whence); + mutex_unlock(&inode->i_mutex); + + return ret; +} const struct file_operations sysfs_dir_operations = { .read = generic_read_dir, .readdir = sysfs_readdir, .release = sysfs_dir_release, - .llseek = generic_file_llseek, + .llseek = sysfs_dir_llseek, }; -- cgit v1.1 From e5110f411d2ee35bf8d202ccca2e89c633060dca Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Wed, 20 Mar 2013 23:25:25 +0800 Subject: sysfs: handle failure path correctly for readdir() In case of 'if (filp->f_pos == 0 or 1)' of sysfs_readdir(), the failure from filldir() isn't handled, and the reference counter of the sysfs_dirent object pointed by filp->private_data will be released without clearing filp->private_data, so use after free bug will be triggered later. This patch returns immeadiately under the situation for fixing the bug, and it is reasonable to return from readdir() when filldir() fails. Reported-by: Dave Jones Tested-by: Sasha Levin Cc: Signed-off-by: Ming Lei Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/dir.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c index c9e1660..e145126 100644 --- a/fs/sysfs/dir.c +++ b/fs/sysfs/dir.c @@ -1020,6 +1020,8 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir) ino = parent_sd->s_ino; if (filldir(dirent, ".", 1, filp->f_pos, ino, DT_DIR) == 0) filp->f_pos++; + else + return 0; } if (filp->f_pos == 1) { if (parent_sd->s_parent) @@ -1028,6 +1030,8 @@ static int sysfs_readdir(struct file * filp, void * dirent, filldir_t filldir) ino = parent_sd->s_ino; if (filldir(dirent, "..", 2, filp->f_pos, ino, DT_DIR) == 0) filp->f_pos++; + else + return 0; } mutex_lock(&sysfs_mutex); for (pos = sysfs_dir_pos(ns, parent_sd, filp->f_pos, pos); -- cgit v1.1 From 260b3f1291a75a580d22ce8bfb1499c617272716 Mon Sep 17 00:00:00 2001 From: Julia Lemire Date: Mon, 18 Mar 2013 10:17:47 -0400 Subject: drm/mgag200: Bug fix: Modified pll algorithm for EH project While testing the mgag200 kms driver on the HP ProLiant Gen8, a bug was seen. Once the bootloader would load the selected kernel, the screen would go black. At first it was assumed that the mgag200 kms driver was hanging. But after setting up the grub serial output, it was seen that the driver was being loaded properly. After trying serval monitors, one finaly displayed the message "Frequency Out of Range". By comparing the kms pll algorithm with the previous mgag200 xorg driver pll algorithm, discrepencies were found. Once the kms pll algorithm was modified, the expected pll values were produced. This fix was tested on several monitors of varying native resolutions. Signed-off-by: Julia Lemire Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_mode.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index a274b99..fe22bb7 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -382,19 +382,19 @@ static int mga_g200eh_set_plls(struct mga_device *mdev, long clock) m = n = p = 0; vcomax = 800000; vcomin = 400000; - pllreffreq = 3333; + pllreffreq = 33333; delta = 0xffffffff; permitteddelta = clock * 5 / 1000; - for (testp = 16; testp > 0; testp--) { + for (testp = 16; testp > 0; testp >>= 1) { if (clock * testp > vcomax) continue; if (clock * testp < vcomin) continue; for (testm = 1; testm < 33; testm++) { - for (testn = 1; testn < 257; testn++) { + for (testn = 17; testn < 257; testn++) { computed = (pllreffreq * testn) / (testm * testp); if (computed > clock) @@ -404,11 +404,11 @@ static int mga_g200eh_set_plls(struct mga_device *mdev, long clock) if (tmpdelta < delta) { delta = tmpdelta; n = testn - 1; - m = (testm - 1) | ((n >> 1) & 0x80); + m = (testm - 1); p = testp - 1; } if ((clock * testp) >= 600000) - p |= 80; + p |= 0x80; } } } -- cgit v1.1 From 991155bacb91c988c45586525771758ddadd44ce Mon Sep 17 00:00:00 2001 From: Horia Geanta Date: Wed, 20 Mar 2013 16:31:38 +0200 Subject: Revert "crypto: talitos - add IPsec ESN support" This reverts commit e763eb699be723fb41af818118068c6b3afdaf8d. Current IPsec ESN implementation for authencesn(cbc(aes), hmac(sha)) (separate encryption and integrity algorithms) does not conform to RFC4303. ICV is generated by hashing the sequence SPI, SeqNum-High, SeqNum-Low, IV, Payload instead of SPI, SeqNum-Low, IV, Payload, SeqNum-High. Cc: # 3.8, 3.7 Reported-by: Chaoxing Lin Signed-off-by: Horia Geanta Reviewed-by: Kim Phillips Signed-off-by: Herbert Xu --- drivers/crypto/talitos.c | 30 ++---------------------------- 1 file changed, 2 insertions(+), 28 deletions(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index 09b184ad..5b2b5e6 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -38,7 +38,6 @@ #include #include #include -#include #include #include @@ -1974,11 +1973,7 @@ struct talitos_alg_template { }; static struct talitos_alg_template driver_algs[] = { - /* - * AEAD algorithms. These use a single-pass ipsec_esp descriptor. - * authencesn(*,*) is also registered, although not present - * explicitly here. - */ + /* AEAD algorithms. These use a single-pass ipsec_esp descriptor */ { .type = CRYPTO_ALG_TYPE_AEAD, .alg.crypto = { .cra_name = "authenc(hmac(sha1),cbc(aes))", @@ -2820,9 +2815,7 @@ static int talitos_probe(struct platform_device *ofdev) if (hw_supports(dev, driver_algs[i].desc_hdr_template)) { struct talitos_crypto_alg *t_alg; char *name = NULL; - bool authenc = false; -authencesn: t_alg = talitos_alg_alloc(dev, &driver_algs[i]); if (IS_ERR(t_alg)) { err = PTR_ERR(t_alg); @@ -2837,8 +2830,6 @@ authencesn: err = crypto_register_alg( &t_alg->algt.alg.crypto); name = t_alg->algt.alg.crypto.cra_driver_name; - authenc = authenc ? !authenc : - !(bool)memcmp(name, "authenc", 7); break; case CRYPTO_ALG_TYPE_AHASH: err = crypto_register_ahash( @@ -2851,25 +2842,8 @@ authencesn: dev_err(dev, "%s alg registration failed\n", name); kfree(t_alg); - } else { + } else list_add_tail(&t_alg->entry, &priv->alg_list); - if (authenc) { - struct crypto_alg *alg = - &driver_algs[i].alg.crypto; - - name = alg->cra_name; - memmove(name + 10, name + 7, - strlen(name) - 7); - memcpy(name + 7, "esn", 3); - - name = alg->cra_driver_name; - memmove(name + 10, name + 7, - strlen(name) - 7); - memcpy(name + 7, "esn", 3); - - goto authencesn; - } - } } } if (!list_empty(&priv->alg_list)) -- cgit v1.1 From 246bbedb9aaf27e2207501d93a869023a439fce5 Mon Sep 17 00:00:00 2001 From: Horia Geanta Date: Wed, 20 Mar 2013 16:31:58 +0200 Subject: Revert "crypto: caam - add IPsec ESN support" This reverts commit 891104ed008e8646c7860fe5bc70b0aac55dcc6c. Current IPsec ESN implementation for authencesn(cbc(aes), hmac(sha)) (separate encryption and integrity algorithms) does not conform to RFC4303. ICV is generated by hashing the sequence SPI, SeqNum-High, SeqNum-Low, IV, Payload instead of SPI, SeqNum-Low, IV, Payload, SeqNum-High. Cc: # 3.8, 3.7 Reported-by: Chaoxing Lin Signed-off-by: Horia Geanta Reviewed-by: Kim Phillips Signed-off-by: Herbert Xu --- drivers/crypto/caam/caamalg.c | 27 ++------------------------- drivers/crypto/caam/compat.h | 1 - 2 files changed, 2 insertions(+), 26 deletions(-) diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index b2a0a07..cf268b1 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1650,11 +1650,7 @@ struct caam_alg_template { }; static struct caam_alg_template driver_algs[] = { - /* - * single-pass ipsec_esp descriptor - * authencesn(*,*) is also registered, although not present - * explicitly here. - */ + /* single-pass ipsec_esp descriptor */ { .name = "authenc(hmac(md5),cbc(aes))", .driver_name = "authenc-hmac-md5-cbc-aes-caam", @@ -2217,9 +2213,7 @@ static int __init caam_algapi_init(void) for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { /* TODO: check if h/w supports alg */ struct caam_crypto_alg *t_alg; - bool done = false; -authencesn: t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]); if (IS_ERR(t_alg)) { err = PTR_ERR(t_alg); @@ -2233,25 +2227,8 @@ authencesn: dev_warn(ctrldev, "%s alg registration failed\n", t_alg->crypto_alg.cra_driver_name); kfree(t_alg); - } else { + } else list_add_tail(&t_alg->entry, &priv->alg_list); - if (driver_algs[i].type == CRYPTO_ALG_TYPE_AEAD && - !memcmp(driver_algs[i].name, "authenc", 7) && - !done) { - char *name; - - name = driver_algs[i].name; - memmove(name + 10, name + 7, strlen(name) - 7); - memcpy(name + 7, "esn", 3); - - name = driver_algs[i].driver_name; - memmove(name + 10, name + 7, strlen(name) - 7); - memcpy(name + 7, "esn", 3); - - done = true; - goto authencesn; - } - } } if (!list_empty(&priv->alg_list)) dev_info(ctrldev, "%s algorithms registered in /proc/crypto\n", diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h index cf15e78..762aeff 100644 --- a/drivers/crypto/caam/compat.h +++ b/drivers/crypto/caam/compat.h @@ -23,7 +23,6 @@ #include #include #include -#include #include #include -- cgit v1.1 From eda81bea894e5cd945e30f85b00546caf80fbecc Mon Sep 17 00:00:00 2001 From: Paul Bolle Date: Wed, 20 Mar 2013 09:44:17 +0100 Subject: usb: gadget: net2272: finally convert "CONFIG_USB_GADGET_NET2272_DMA" The Kconfig symbol USB_GADGET_NET2272_DMA was renamed to USB_NET2272_DMA in commit 193ab2a6070039e7ee2b9b9bebea754a7c52fd1b ("usb: gadget: allow multiple gadgets to be built"). That commit did not convert the only occurrence of the corresponding Kconfig macro. Convert that macro now. Signed-off-by: Paul Bolle Signed-off-by: Felipe Balbi --- drivers/usb/gadget/net2272.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/net2272.c b/drivers/usb/gadget/net2272.c index 17628337..32524b63 100644 --- a/drivers/usb/gadget/net2272.c +++ b/drivers/usb/gadget/net2272.c @@ -59,7 +59,7 @@ static const char * const ep_name[] = { }; #define DMA_ADDR_INVALID (~(dma_addr_t)0) -#ifdef CONFIG_USB_GADGET_NET2272_DMA +#ifdef CONFIG_USB_NET2272_DMA /* * use_dma: the NET2272 can use an external DMA controller. * Note that since there is no generic DMA api, some functions, -- cgit v1.1 From ed9dc8ce7a1c8115dba9483a9b51df8b63a2e0ef Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Thu, 7 Mar 2013 11:40:17 -0600 Subject: efivars: Allow disabling use as a pstore backend Add a new option, CONFIG_EFI_VARS_PSTORE, which can be set to N to avoid using efivars as a backend to pstore, as some users may want to compile out the code completely. Set the default to Y to maintain backwards compatability, since this feature has always been enabled until now. Signed-off-by: Seth Forshee Cc: Josh Boyer Cc: Matthew Garrett Cc: Seiji Aguchi Cc: Tony Luck Cc: Signed-off-by: Matt Fleming --- drivers/firmware/Kconfig | 9 +++++++ drivers/firmware/efivars.c | 64 +++++++++++++++------------------------------- 2 files changed, 29 insertions(+), 44 deletions(-) diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 9b00072..898023d 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -53,6 +53,15 @@ config EFI_VARS Subsequent efibootmgr releases may be found at: +config EFI_VARS_PSTORE + bool "Register efivars backend for pstore" + depends on EFI_VARS && PSTORE + default y + help + Say Y here to enable use efivars as a backend to pstore. This + will allow writing console messages, crash dumps, or anything + else supported by pstore to EFI variables. + config EFI_PCDP bool "Console device selection via EFI PCDP or HCDP table" depends on ACPI && EFI && IA64 diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index fe62aa3..37b6f24 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -1309,9 +1309,7 @@ static const struct inode_operations efivarfs_dir_inode_operations = { .create = efivarfs_create, }; -static struct pstore_info efi_pstore_info; - -#ifdef CONFIG_PSTORE +#ifdef CONFIG_EFI_VARS_PSTORE static int efi_pstore_open(struct pstore_info *psi) { @@ -1514,38 +1512,6 @@ static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count, return 0; } -#else -static int efi_pstore_open(struct pstore_info *psi) -{ - return 0; -} - -static int efi_pstore_close(struct pstore_info *psi) -{ - return 0; -} - -static ssize_t efi_pstore_read(u64 *id, enum pstore_type_id *type, int *count, - struct timespec *timespec, - char **buf, struct pstore_info *psi) -{ - return -1; -} - -static int efi_pstore_write(enum pstore_type_id type, - enum kmsg_dump_reason reason, u64 *id, - unsigned int part, int count, size_t size, - struct pstore_info *psi) -{ - return 0; -} - -static int efi_pstore_erase(enum pstore_type_id type, u64 id, int count, - struct timespec time, struct pstore_info *psi) -{ - return 0; -} -#endif static struct pstore_info efi_pstore_info = { .owner = THIS_MODULE, @@ -1557,6 +1523,24 @@ static struct pstore_info efi_pstore_info = { .erase = efi_pstore_erase, }; +static void efivar_pstore_register(struct efivars *efivars) +{ + efivars->efi_pstore_info = efi_pstore_info; + efivars->efi_pstore_info.buf = kmalloc(4096, GFP_KERNEL); + if (efivars->efi_pstore_info.buf) { + efivars->efi_pstore_info.bufsize = 1024; + efivars->efi_pstore_info.data = efivars; + spin_lock_init(&efivars->efi_pstore_info.buf_lock); + pstore_register(&efivars->efi_pstore_info); + } +} +#else +static void efivar_pstore_register(struct efivars *efivars) +{ + return; +} +#endif + static ssize_t efivar_create(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t pos, size_t count) @@ -2025,15 +2009,7 @@ int register_efivars(struct efivars *efivars, if (error) unregister_efivars(efivars); - efivars->efi_pstore_info = efi_pstore_info; - - efivars->efi_pstore_info.buf = kmalloc(4096, GFP_KERNEL); - if (efivars->efi_pstore_info.buf) { - efivars->efi_pstore_info.bufsize = 1024; - efivars->efi_pstore_info.data = efivars; - spin_lock_init(&efivars->efi_pstore_info.buf_lock); - pstore_register(&efivars->efi_pstore_info); - } + efivar_pstore_register(efivars); register_filesystem(&efivarfs_type); -- cgit v1.1 From ec0971ba5372a4dfa753f232449d23a8fd98490e Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Mon, 11 Mar 2013 16:17:50 -0500 Subject: efivars: Add module parameter to disable use as a pstore backend We know that with some firmware implementations writing too much data to UEFI variables can lead to bricking machines. Recent changes attempt to address this issue, but for some it may still be prudent to avoid writing large amounts of data until the solution has been proven on a wide variety of hardware. Crash dumps or other data from pstore can potentially be a large data source. Add a pstore_module parameter to efivars to allow disabling its use as a backend for pstore. Also add a config option, CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE, to allow setting the default value of this paramter to true (i.e. disabled by default). Signed-off-by: Seth Forshee Cc: Josh Boyer Cc: Matthew Garrett Cc: Seiji Aguchi Cc: Tony Luck Cc: Signed-off-by: Matt Fleming --- drivers/firmware/Kconfig | 9 +++++++++ drivers/firmware/efivars.c | 8 +++++++- 2 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index 898023d..42c759a 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -62,6 +62,15 @@ config EFI_VARS_PSTORE will allow writing console messages, crash dumps, or anything else supported by pstore to EFI variables. +config EFI_VARS_PSTORE_DEFAULT_DISABLE + bool "Disable using efivars as a pstore backend by default" + depends on EFI_VARS_PSTORE + default n + help + Saying Y here will disable the use of efivars as a storage + backend for pstore by default. This setting can be overridden + using the efivars module's pstore_disable parameter. + config EFI_PCDP bool "Console device selection via EFI PCDP or HCDP table" depends on ACPI && EFI && IA64 diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 37b6f24..6607daf5 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -103,6 +103,11 @@ MODULE_VERSION(EFIVARS_VERSION); */ #define GUID_LEN 36 +static bool efivars_pstore_disable = + IS_ENABLED(EFI_VARS_PSTORE_DEFAULT_DISABLE); + +module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644); + /* * The maximum size of VariableName + Data = 1024 * Therefore, it's reasonable to save that much @@ -2009,7 +2014,8 @@ int register_efivars(struct efivars *efivars, if (error) unregister_efivars(efivars); - efivar_pstore_register(efivars); + if (!efivars_pstore_disable) + efivar_pstore_register(efivars); register_filesystem(&efivarfs_type); -- cgit v1.1 From ec50bd32f1672d38ddce10fb1841cbfda89cfe9a Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Fri, 1 Mar 2013 14:49:12 +0000 Subject: efivars: explicitly calculate length of VariableName It's not wise to assume VariableNameSize represents the length of VariableName, as not all firmware updates VariableNameSize in the same way (some don't update it at all if EFI_SUCCESS is returned). There are even implementations out there that update VariableNameSize with values that are both larger than the string returned in VariableName and smaller than the buffer passed to GetNextVariableName(), which resulted in the following bug report from Michael Schroeder, > On HP z220 system (firmware version 1.54), some EFI variables are > incorrectly named : > > ls -d /sys/firmware/efi/vars/*8be4d* | grep -v -- -8be returns > /sys/firmware/efi/vars/dbxDefault-pport8be4df61-93ca-11d2-aa0d-00e098032b8c > /sys/firmware/efi/vars/KEKDefault-pport8be4df61-93ca-11d2-aa0d-00e098032b8c > /sys/firmware/efi/vars/SecureBoot-pport8be4df61-93ca-11d2-aa0d-00e098032b8c > /sys/firmware/efi/vars/SetupMode-Information8be4df61-93ca-11d2-aa0d-00e098032b8c The issue here is that because we blindly use VariableNameSize without verifying its value, we can potentially read garbage values from the buffer containing VariableName if VariableNameSize is larger than the length of VariableName. Since VariableName is a string, we can calculate its size by searching for the terminating NULL character. Reported-by: Frederic Crozat Cc: Matthew Garrett Cc: Josh Boyer Cc: Michael Schroeder Cc: Lee, Chun-Yi Cc: Lingzhu Xiang Cc: Seiji Aguchi Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 6607daf5..1e9d9b9 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -1705,6 +1705,31 @@ static bool variable_is_present(efi_char16_t *variable_name, efi_guid_t *vendor) return found; } +/* + * Returns the size of variable_name, in bytes, including the + * terminating NULL character, or variable_name_size if no NULL + * character is found among the first variable_name_size bytes. + */ +static unsigned long var_name_strnsize(efi_char16_t *variable_name, + unsigned long variable_name_size) +{ + unsigned long len; + efi_char16_t c; + + /* + * The variable name is, by definition, a NULL-terminated + * string, so make absolutely sure that variable_name_size is + * the value we expect it to be. If not, return the real size. + */ + for (len = 2; len <= variable_name_size; len += sizeof(c)) { + c = variable_name[(len / sizeof(c)) - 1]; + if (!c) + break; + } + + return min(len, variable_name_size); +} + static void efivar_update_sysfs_entries(struct work_struct *work) { struct efivars *efivars = &__efivars; @@ -1745,10 +1770,13 @@ static void efivar_update_sysfs_entries(struct work_struct *work) if (!found) { kfree(variable_name); break; - } else + } else { + variable_name_size = var_name_strnsize(variable_name, + variable_name_size); efivar_create_sysfs_entry(efivars, variable_name_size, variable_name, &vendor); + } } } @@ -1995,6 +2023,8 @@ int register_efivars(struct efivars *efivars, &vendor_guid); switch (status) { case EFI_SUCCESS: + variable_name_size = var_name_strnsize(variable_name, + variable_name_size); efivar_create_sysfs_entry(efivars, variable_name_size, variable_name, -- cgit v1.1 From e971318bbed610e28bb3fde9d548e6aaf0a6b02e Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Thu, 7 Mar 2013 11:59:14 +0000 Subject: efivars: Handle duplicate names from get_next_variable() Some firmware exhibits a bug where the same VariableName and VendorGuid values are returned on multiple invocations of GetNextVariableName(). See, https://bugzilla.kernel.org/show_bug.cgi?id=47631 As a consequence of such a bug, Andre reports hitting the following WARN_ON() in the sysfs code after updating the BIOS on his, "Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77X-UD3H, BIOS F19e 11/21/2012)" machine, [ 0.581554] EFI Variables Facility v0.08 2004-May-17 [ 0.584914] ------------[ cut here ]------------ [ 0.585639] WARNING: at /home/andre/linux/fs/sysfs/dir.c:536 sysfs_add_one+0xd4/0x100() [ 0.586381] Hardware name: To be filled by O.E.M. [ 0.587123] sysfs: cannot create duplicate filename '/firmware/efi/vars/SbAslBufferPtrVar-01f33c25-764d-43ea-aeea-6b5a41f3f3e8' [ 0.588694] Modules linked in: [ 0.589484] Pid: 1, comm: swapper/0 Not tainted 3.8.0+ #7 [ 0.590280] Call Trace: [ 0.591066] [] ? sysfs_add_one+0xd4/0x100 [ 0.591861] [] warn_slowpath_common+0x7f/0xc0 [ 0.592650] [] warn_slowpath_fmt+0x4c/0x50 [ 0.593429] [] ? strlcat+0x65/0x80 [ 0.594203] [] sysfs_add_one+0xd4/0x100 [ 0.594979] [] create_dir+0x78/0xd0 [ 0.595753] [] sysfs_create_dir+0x86/0xe0 [ 0.596532] [] kobject_add_internal+0x9c/0x220 [ 0.597310] [] kobject_init_and_add+0x67/0x90 [ 0.598083] [] ? efivar_create_sysfs_entry+0x61/0x1c0 [ 0.598859] [] efivar_create_sysfs_entry+0x11b/0x1c0 [ 0.599631] [] register_efivars+0xde/0x420 [ 0.600395] [] ? edd_init+0x2f5/0x2f5 [ 0.601150] [] efivars_init+0xb8/0x104 [ 0.601903] [] do_one_initcall+0x12a/0x180 [ 0.602659] [] kernel_init_freeable+0x13e/0x1c6 [ 0.603418] [] ? loglevel+0x31/0x31 [ 0.604183] [] ? rest_init+0x80/0x80 [ 0.604936] [] kernel_init+0xe/0xf0 [ 0.605681] [] ret_from_fork+0x7c/0xb0 [ 0.606414] [] ? rest_init+0x80/0x80 [ 0.607143] ---[ end trace 1609741ab737eb29 ]--- There's not much we can do to work around and keep traversing the variable list once we hit this firmware bug. Our only solution is to terminate the loop because, as Lingzhu reports, some machines get stuck when they encounter duplicate names, > I had an IBM System x3100 M4 and x3850 X5 on which kernel would > get stuck in infinite loop creating duplicate sysfs files because, > for some reason, there are several duplicate boot entries in nvram > getting GetNextVariableName into a circle of iteration (with > period > 2). Also disable the workqueue, as efivar_update_sysfs_entries() uses GetNextVariableName() to figure out which variables have been created since the last iteration. That algorithm isn't going to work if GetNextVariableName() returns duplicates. Note that we don't disable EFI variable creation completely on the affected machines, it's just that any pstore dump-* files won't appear in sysfs until the next boot. Reported-by: Andre Heider Reported-by: Lingzhu Xiang Tested-by: Lingzhu Xiang Cc: Seiji Aguchi Cc: Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 48 +++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 1e9d9b9..d64661f 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -170,6 +170,7 @@ efivar_create_sysfs_entry(struct efivars *efivars, static void efivar_update_sysfs_entries(struct work_struct *); static DECLARE_WORK(efivar_work, efivar_update_sysfs_entries); +static bool efivar_wq_enabled = true; /* Return the number of unicode characters in data */ static unsigned long @@ -1444,7 +1445,7 @@ static int efi_pstore_write(enum pstore_type_id type, spin_unlock_irqrestore(&efivars->lock, flags); - if (reason == KMSG_DUMP_OOPS) + if (reason == KMSG_DUMP_OOPS && efivar_wq_enabled) schedule_work(&efivar_work); *id = part; @@ -1975,6 +1976,35 @@ void unregister_efivars(struct efivars *efivars) } EXPORT_SYMBOL_GPL(unregister_efivars); +/* + * Print a warning when duplicate EFI variables are encountered and + * disable the sysfs workqueue since the firmware is buggy. + */ +static void dup_variable_bug(efi_char16_t *s16, efi_guid_t *vendor_guid, + unsigned long len16) +{ + size_t i, len8 = len16 / sizeof(efi_char16_t); + char *s8; + + /* + * Disable the workqueue since the algorithm it uses for + * detecting new variables won't work with this buggy + * implementation of GetNextVariableName(). + */ + efivar_wq_enabled = false; + + s8 = kzalloc(len8, GFP_KERNEL); + if (!s8) + return; + + for (i = 0; i < len8; i++) + s8[i] = s16[i]; + + printk(KERN_WARNING "efivars: duplicate variable: %s-%pUl\n", + s8, vendor_guid); + kfree(s8); +} + int register_efivars(struct efivars *efivars, const struct efivar_operations *ops, struct kobject *parent_kobj) @@ -2025,6 +2055,22 @@ int register_efivars(struct efivars *efivars, case EFI_SUCCESS: variable_name_size = var_name_strnsize(variable_name, variable_name_size); + + /* + * Some firmware implementations return the + * same variable name on multiple calls to + * get_next_variable(). Terminate the loop + * immediately as there is no guarantee that + * we'll ever see a different variable name, + * and may end up looping here forever. + */ + if (variable_is_present(variable_name, &vendor_guid)) { + dup_variable_bug(variable_name, &vendor_guid, + variable_name_size); + status = EFI_NOT_FOUND; + break; + } + efivar_create_sysfs_entry(efivars, variable_name_size, variable_name, -- cgit v1.1 From 4376c94618c26225e69e17b7c91169c45a90b292 Mon Sep 17 00:00:00 2001 From: fanchaoting Date: Thu, 21 Mar 2013 09:15:30 +0800 Subject: pnfs-block: removing DM device maybe cause oops when call dev_remove when pnfs block using device mapper,if umounting later,it maybe cause oops. we apply "1 + sizeof(bl_umount_request)" memory for msg->data, the memory maybe overflow when we do "memcpy(&dataptr [sizeof(bl_msg)], &bl_umount_request, sizeof(bl_umount_request))", because the size of bl_msg is more than 1 byte. Signed-off-by: fanchaoting Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayoutdm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c index 737d839..6fc7b5c 100644 --- a/fs/nfs/blocklayout/blocklayoutdm.c +++ b/fs/nfs/blocklayout/blocklayoutdm.c @@ -55,7 +55,8 @@ static void dev_remove(struct net *net, dev_t dev) bl_pipe_msg.bl_wq = &nn->bl_wq; memset(msg, 0, sizeof(*msg)); - msg->data = kzalloc(1 + sizeof(bl_umount_request), GFP_NOFS); + msg->len = sizeof(bl_msg) + bl_msg.totallen; + msg->data = kzalloc(msg->len, GFP_NOFS); if (!msg->data) goto out; @@ -66,7 +67,6 @@ static void dev_remove(struct net *net, dev_t dev) memcpy(msg->data, &bl_msg, sizeof(bl_msg)); dataptr = (uint8_t *) msg->data; memcpy(&dataptr[sizeof(bl_msg)], &bl_umount_request, sizeof(bl_umount_request)); - msg->len = sizeof(bl_msg) + bl_msg.totallen; add_wait_queue(&nn->bl_wq, &wq); if (rpc_queue_upcall(nn->bl_device_pipe, msg) < 0) { -- cgit v1.1 From a073dbff359f4741013ae4b8395f5364c5e00b48 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 20 Mar 2013 12:34:32 -0400 Subject: NFSv4.1: Fix a race in pNFS layoutcommit We need to clear the NFS_LSEG_LAYOUTCOMMIT bits atomically with the NFS_INO_LAYOUTCOMMIT bit, otherwise we may end up with situations where the two are out of sync. The first half of the problem is to ensure that pnfs_layoutcommit_inode clears the NFS_LSEG_LAYOUTCOMMIT bit through pnfs_list_write_lseg. We still need to keep the reference to those segments until the RPC call is finished, so in order to make it clear _where_ those references come from, we add a helper pnfs_list_write_lseg_done() that cleans up after pnfs_list_write_lseg. Signed-off-by: Trond Myklebust Acked-by: Benny Halevy Cc: stable@vger.kernel.org --- fs/nfs/nfs4proc.c | 14 -------------- fs/nfs/pnfs.c | 19 ++++++++++++++++++- 2 files changed, 18 insertions(+), 15 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index b2671cb..6ccdd4f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -6416,22 +6416,8 @@ nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) static void nfs4_layoutcommit_release(void *calldata) { struct nfs4_layoutcommit_data *data = calldata; - struct pnfs_layout_segment *lseg, *tmp; - unsigned long *bitlock = &NFS_I(data->args.inode)->flags; pnfs_cleanup_layoutcommit(data); - /* Matched by references in pnfs_set_layoutcommit */ - list_for_each_entry_safe(lseg, tmp, &data->lseg_list, pls_lc_list) { - list_del_init(&lseg->pls_lc_list); - if (test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, - &lseg->pls_flags)) - pnfs_put_lseg(lseg); - } - - clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); - smp_mb__after_clear_bit(); - wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); - put_rpccred(data->cred); kfree(data); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 48ac5aa..3d90091 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1746,11 +1746,27 @@ static void pnfs_list_write_lseg(struct inode *inode, struct list_head *listp) list_for_each_entry(lseg, &NFS_I(inode)->layout->plh_segs, pls_list) { if (lseg->pls_range.iomode == IOMODE_RW && - test_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags)) + test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags)) list_add(&lseg->pls_lc_list, listp); } } +static void pnfs_list_write_lseg_done(struct inode *inode, struct list_head *listp) +{ + struct pnfs_layout_segment *lseg, *tmp; + unsigned long *bitlock = &NFS_I(inode)->flags; + + /* Matched by references in pnfs_set_layoutcommit */ + list_for_each_entry_safe(lseg, tmp, listp, pls_lc_list) { + list_del_init(&lseg->pls_lc_list); + pnfs_put_lseg(lseg); + } + + clear_bit_unlock(NFS_INO_LAYOUTCOMMITTING, bitlock); + smp_mb__after_clear_bit(); + wake_up_bit(bitlock, NFS_INO_LAYOUTCOMMITTING); +} + void pnfs_set_lo_fail(struct pnfs_layout_segment *lseg) { pnfs_layout_io_set_failed(lseg->pls_layout, lseg->pls_range.iomode); @@ -1795,6 +1811,7 @@ void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data) if (nfss->pnfs_curr_ld->cleanup_layoutcommit) nfss->pnfs_curr_ld->cleanup_layoutcommit(data); + pnfs_list_write_lseg_done(data->args.inode, &data->lseg_list); } /* -- cgit v1.1 From 24956804349ca0eadcdde032d65e8c00b4214096 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 20 Mar 2013 13:03:00 -0400 Subject: NFSv4.1: Always clear the NFS_INO_LAYOUTCOMMIT in layoutreturn Note that clearing NFS_INO_LAYOUTCOMMIT is tricky, since it requires you to also clear the NFS_LSEG_LAYOUTCOMMIT bits from the layout segments. The only two sites that need to do this are the ones that call pnfs_return_layout() without first doing a layout commit. Signed-off-by: Trond Myklebust Acked-by: Benny Halevy Cc: stable@vger.kernel.org --- fs/nfs/nfs4filelayout.c | 1 - fs/nfs/pnfs.c | 35 +++++++++++++++++++++++++++-------- 2 files changed, 27 insertions(+), 9 deletions(-) diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c index 49eeb04..4fb234d 100644 --- a/fs/nfs/nfs4filelayout.c +++ b/fs/nfs/nfs4filelayout.c @@ -129,7 +129,6 @@ static void filelayout_fenceme(struct inode *inode, struct pnfs_layout_hdr *lo) { if (!test_and_clear_bit(NFS_LAYOUT_RETURN, &lo->plh_flags)) return; - clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(inode)->flags); pnfs_return_layout(inode); } diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 3d90091..5044142 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -417,6 +417,16 @@ should_free_lseg(struct pnfs_layout_range *lseg_range, lo_seg_intersecting(lseg_range, recall_range); } +static bool pnfs_lseg_dec_and_remove_zero(struct pnfs_layout_segment *lseg, + struct list_head *tmp_list) +{ + if (!atomic_dec_and_test(&lseg->pls_refcount)) + return false; + pnfs_layout_remove_lseg(lseg->pls_layout, lseg); + list_add(&lseg->pls_list, tmp_list); + return true; +} + /* Returns 1 if lseg is removed from list, 0 otherwise */ static int mark_lseg_invalid(struct pnfs_layout_segment *lseg, struct list_head *tmp_list) @@ -430,11 +440,8 @@ static int mark_lseg_invalid(struct pnfs_layout_segment *lseg, */ dprintk("%s: lseg %p ref %d\n", __func__, lseg, atomic_read(&lseg->pls_refcount)); - if (atomic_dec_and_test(&lseg->pls_refcount)) { - pnfs_layout_remove_lseg(lseg->pls_layout, lseg); - list_add(&lseg->pls_list, tmp_list); + if (pnfs_lseg_dec_and_remove_zero(lseg, tmp_list)) rv = 1; - } } return rv; } @@ -777,6 +784,21 @@ send_layoutget(struct pnfs_layout_hdr *lo, return lseg; } +static void pnfs_clear_layoutcommit(struct inode *inode, + struct list_head *head) +{ + struct nfs_inode *nfsi = NFS_I(inode); + struct pnfs_layout_segment *lseg, *tmp; + + if (!test_and_clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) + return; + list_for_each_entry_safe(lseg, tmp, &nfsi->layout->plh_segs, pls_list) { + if (!test_and_clear_bit(NFS_LSEG_LAYOUTCOMMIT, &lseg->pls_flags)) + continue; + pnfs_lseg_dec_and_remove_zero(lseg, head); + } +} + /* * Initiates a LAYOUTRETURN(FILE), and removes the pnfs_layout_hdr * when the layout segment list is empty. @@ -808,6 +830,7 @@ _pnfs_return_layout(struct inode *ino) /* Reference matched in nfs4_layoutreturn_release */ pnfs_get_layout_hdr(lo); empty = list_empty(&lo->plh_segs); + pnfs_clear_layoutcommit(ino, &tmp_list); pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL); /* Don't send a LAYOUTRETURN if list was initially empty */ if (empty) { @@ -820,8 +843,6 @@ _pnfs_return_layout(struct inode *ino) spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&tmp_list); - WARN_ON(test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)); - lrp = kzalloc(sizeof(*lrp), GFP_KERNEL); if (unlikely(lrp == NULL)) { status = -ENOMEM; @@ -1458,7 +1479,6 @@ static void pnfs_ld_handle_write_error(struct nfs_write_data *data) dprintk("pnfs write error = %d\n", hdr->pnfs_error); if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags & PNFS_LAYOUTRET_ON_ERROR) { - clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags); pnfs_return_layout(hdr->inode); } if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) @@ -1613,7 +1633,6 @@ static void pnfs_ld_handle_read_error(struct nfs_read_data *data) dprintk("pnfs read error = %d\n", hdr->pnfs_error); if (NFS_SERVER(hdr->inode)->pnfs_curr_ld->flags & PNFS_LAYOUTRET_ON_ERROR) { - clear_bit(NFS_INO_LAYOUTCOMMIT, &NFS_I(hdr->inode)->flags); pnfs_return_layout(hdr->inode); } if (!test_and_set_bit(NFS_IOHDR_REDO, &hdr->flags)) -- cgit v1.1 From 240286725d854331422cb15957f8d9bf2741d4e3 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 20 Mar 2013 13:23:33 -0400 Subject: NFSv4.1: Add a helper pnfs_commit_and_return_layout In order to be able to safely return the layout in nfs4_proc_setattr, we need to block new uses of the layout, wait for all outstanding users of the layout to complete, commit the layout and then return it. This patch adds a helper in order to do all this safely. Signed-off-by: Trond Myklebust Cc: Boaz Harrosh --- fs/nfs/nfs4proc.c | 2 +- fs/nfs/pnfs.c | 27 +++++++++++++++++++++++++++ fs/nfs/pnfs.h | 6 ++++++ 3 files changed, 34 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 6ccdd4f..26431cf 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2632,7 +2632,7 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, int status; if (pnfs_ld_layoutret_on_setattr(inode)) - pnfs_return_layout(inode); + pnfs_commit_and_return_layout(inode); nfs_fattr_init(fattr); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 5044142..4bdffe0 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -866,6 +866,33 @@ out: } EXPORT_SYMBOL_GPL(_pnfs_return_layout); +int +pnfs_commit_and_return_layout(struct inode *inode) +{ + struct pnfs_layout_hdr *lo; + int ret; + + spin_lock(&inode->i_lock); + lo = NFS_I(inode)->layout; + if (lo == NULL) { + spin_unlock(&inode->i_lock); + return 0; + } + pnfs_get_layout_hdr(lo); + /* Block new layoutgets and read/write to ds */ + lo->plh_block_lgets++; + spin_unlock(&inode->i_lock); + filemap_fdatawait(inode->i_mapping); + ret = pnfs_layoutcommit_inode(inode, true); + if (ret == 0) + ret = _pnfs_return_layout(inode); + spin_lock(&inode->i_lock); + lo->plh_block_lgets--; + spin_unlock(&inode->i_lock); + pnfs_put_layout_hdr(lo); + return ret; +} + bool pnfs_roc(struct inode *ino) { struct pnfs_layout_hdr *lo; diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index 94ba804..f5f8a47 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -219,6 +219,7 @@ void pnfs_set_layoutcommit(struct nfs_write_data *wdata); void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); int pnfs_layoutcommit_inode(struct inode *inode, bool sync); int _pnfs_return_layout(struct inode *); +int pnfs_commit_and_return_layout(struct inode *); void pnfs_ld_write_done(struct nfs_write_data *); void pnfs_ld_read_done(struct nfs_read_data *); struct pnfs_layout_segment *pnfs_update_layout(struct inode *ino, @@ -407,6 +408,11 @@ static inline int pnfs_return_layout(struct inode *ino) return 0; } +static inline int pnfs_commit_and_return_layout(struct inode *inode) +{ + return 0; +} + static inline bool pnfs_ld_layoutret_on_setattr(struct inode *inode) { -- cgit v1.1 From cb0e51d80694fc9964436be1a1a15275e991cb1e Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 20 Mar 2013 21:31:42 +0000 Subject: lantiq_etop: use free_netdev(netdev) instead of kfree() Freeing netdev without free_netdev() leads to net, tx leaks. And it may lead to dereferencing freed pointer. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller --- drivers/net/ethernet/lantiq_etop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/lantiq_etop.c b/drivers/net/ethernet/lantiq_etop.c index 6a21274..bfdb0686 100644 --- a/drivers/net/ethernet/lantiq_etop.c +++ b/drivers/net/ethernet/lantiq_etop.c @@ -769,7 +769,7 @@ ltq_etop_probe(struct platform_device *pdev) return 0; err_free: - kfree(dev); + free_netdev(dev); err_out: return err; } -- cgit v1.1 From ce16294fda230c787ce5c35f61b2f80d14d70a72 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Date: Thu, 21 Mar 2013 02:20:11 +0000 Subject: net: ethernet: cpsw: fix erroneous condition in error check MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The error check in cpsw_probe_dt() has an '&&' where an '||' is meant to be. This causes a NULL pointer dereference when incomplet DT data is passed to the driver ('phy_id' property for cpsw_emac1 missing). Signed-off-by: Lothar Waßmann Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 75c4855..df32a09 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -1364,7 +1364,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, struct platform_device *mdio; parp = of_get_property(slave_node, "phy_id", &lenp); - if ((parp == NULL) && (lenp != (sizeof(void *) * 2))) { + if ((parp == NULL) || (lenp != (sizeof(void *) * 2))) { pr_err("Missing slave[%d] phy_id property\n", i); ret = -EINVAL; goto error_ret; -- cgit v1.1 From c101c81b5293cdcb616ed4948d0c4a4cfd1f481a Mon Sep 17 00:00:00 2001 From: Moshe Lazer Date: Thu, 21 Mar 2013 05:55:51 +0000 Subject: net/mlx4_core: Fix wrong mask applied on EQ numbers in the wrapper Currently the mask is wrongly set in the MAP_EQ wrapper, fix that. Without the fix any EQ number above 511 is mapped to one below 511. Signed-off-by: Moshe Lazer Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/eq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c index 251ae2f..8e3123a 100644 --- a/drivers/net/ethernet/mellanox/mlx4/eq.c +++ b/drivers/net/ethernet/mellanox/mlx4/eq.c @@ -771,7 +771,7 @@ int mlx4_MAP_EQ_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_slave_event_eq_info *event_eq = priv->mfunc.master.slave_state[slave].event_eq; u32 in_modifier = vhcr->in_modifier; - u32 eqn = in_modifier & 0x1FF; + u32 eqn = in_modifier & 0x3FF; u64 in_param = vhcr->in_param; int err = 0; int i; -- cgit v1.1 From 80cb0021163cb55b14c7c054073f89d63a2e1e40 Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 21 Mar 2013 05:55:52 +0000 Subject: net/mlx4_core: Fix wrong order of flow steering resources removal On the resource tracker cleanup flow, the DMFS rules must be deleted before we destroy the QPs, else the HW may attempt doing packet steering to non existent QPs. Signed-off-by: Hadar Hen Zion Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 2995687..0d1d967 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -3806,6 +3806,7 @@ void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave) mutex_lock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex); /*VLAN*/ rem_slave_macs(dev, slave); + rem_slave_fs_rule(dev, slave); rem_slave_qps(dev, slave); rem_slave_srqs(dev, slave); rem_slave_cqs(dev, slave); @@ -3814,6 +3815,5 @@ void mlx4_delete_all_resources_for_slave(struct mlx4_dev *dev, int slave) rem_slave_mtts(dev, slave); rem_slave_counters(dev, slave); rem_slave_xrcdns(dev, slave); - rem_slave_fs_rule(dev, slave); mutex_unlock(&priv->mfunc.master.res_tracker.slave_list[slave].mutex); } -- cgit v1.1 From 6efb5fac4d6b617972ab5a10bf67e0eba2c2d212 Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 21 Mar 2013 05:55:53 +0000 Subject: net/mlx4_en: Remove ethtool flow steering rules before releasing QPs Fix the ethtool flow steering rules cleanup to be carried out before releasing the RX QPs. Signed-off-by: Hadar Hen Zion Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 22 +++++++++++----------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index 995d4b6..f278b10 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -1637,6 +1637,17 @@ void mlx4_en_stop_port(struct net_device *dev, int detach) /* Flush multicast filter */ mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0, 1, MLX4_MCAST_CONFIG); + /* Remove flow steering rules for the port*/ + if (mdev->dev->caps.steering_mode == + MLX4_STEERING_MODE_DEVICE_MANAGED) { + ASSERT_RTNL(); + list_for_each_entry_safe(flow, tmp_flow, + &priv->ethtool_list, list) { + mlx4_flow_detach(mdev->dev, flow->id); + list_del(&flow->list); + } + } + mlx4_en_destroy_drop_qp(priv); /* Free TX Rings */ @@ -1657,17 +1668,6 @@ void mlx4_en_stop_port(struct net_device *dev, int detach) if (!(mdev->dev->caps.flags2 & MLX4_DEV_CAP_FLAGS2_REASSIGN_MAC_EN)) mdev->mac_removed[priv->port] = 1; - /* Remove flow steering rules for the port*/ - if (mdev->dev->caps.steering_mode == - MLX4_STEERING_MODE_DEVICE_MANAGED) { - ASSERT_RTNL(); - list_for_each_entry_safe(flow, tmp_flow, - &priv->ethtool_list, list) { - mlx4_flow_detach(mdev->dev, flow->id); - list_del(&flow->list); - } - } - /* Free RX Rings */ for (i = 0; i < priv->rx_ring_num; i++) { mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]); -- cgit v1.1 From 1e3f7b324e46b772dec1bb6dd96ae745fc085401 Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 21 Mar 2013 05:55:54 +0000 Subject: net/mlx4_core: Always use 64 bit resource ID when doing lookup One of the resource tracker code paths was wrongly using int and not u64 for resource tracking IDs, fix it. Signed-off-by: Hadar Hen Zion Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index 0d1d967..b0ccdb5 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -355,7 +355,7 @@ static int mpt_mask(struct mlx4_dev *dev) return dev->caps.num_mpts - 1; } -static void *find_res(struct mlx4_dev *dev, int res_id, +static void *find_res(struct mlx4_dev *dev, u64 res_id, enum mlx4_resource type) { struct mlx4_priv *priv = mlx4_priv(dev); -- cgit v1.1 From 2c473ae7e5826c108e52f4a9d75425fd4c6f9ed1 Mon Sep 17 00:00:00 2001 From: Hadar Hen Zion Date: Thu, 21 Mar 2013 05:55:55 +0000 Subject: net/mlx4_core: Disallow releasing VF QPs which have steering rules VF QPs must not be released when they have steering rules attached to them. For that end, introduce a reference count field to the QP object in the SRIOV resource tracker which is incremented/decremented when steering rules are attached/detached to it. QPs can be released by VF only when their ref count is zero. Signed-off-by: Hadar Hen Zion Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx4/resource_tracker.c | 41 +++++++++++++++++----- 1 file changed, 33 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c index b0ccdb5..1391b52 100644 --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c @@ -99,6 +99,7 @@ struct res_qp { struct list_head mcg_list; spinlock_t mcg_spl; int local_qpn; + atomic_t ref_count; }; enum res_mtt_states { @@ -197,6 +198,7 @@ enum res_fs_rule_states { struct res_fs_rule { struct res_common com; + int qpn; }; static void *res_tracker_lookup(struct rb_root *root, u64 res_id) @@ -447,6 +449,7 @@ static struct res_common *alloc_qp_tr(int id) ret->local_qpn = id; INIT_LIST_HEAD(&ret->mcg_list); spin_lock_init(&ret->mcg_spl); + atomic_set(&ret->ref_count, 0); return &ret->com; } @@ -554,7 +557,7 @@ static struct res_common *alloc_xrcdn_tr(int id) return &ret->com; } -static struct res_common *alloc_fs_rule_tr(u64 id) +static struct res_common *alloc_fs_rule_tr(u64 id, int qpn) { struct res_fs_rule *ret; @@ -564,7 +567,7 @@ static struct res_common *alloc_fs_rule_tr(u64 id) ret->com.res_id = id; ret->com.state = RES_FS_RULE_ALLOCATED; - + ret->qpn = qpn; return &ret->com; } @@ -602,7 +605,7 @@ static struct res_common *alloc_tr(u64 id, enum mlx4_resource type, int slave, ret = alloc_xrcdn_tr(id); break; case RES_FS_RULE: - ret = alloc_fs_rule_tr(id); + ret = alloc_fs_rule_tr(id, extra); break; default: return NULL; @@ -671,10 +674,14 @@ undo: static int remove_qp_ok(struct res_qp *res) { - if (res->com.state == RES_QP_BUSY) + if (res->com.state == RES_QP_BUSY || atomic_read(&res->ref_count) || + !list_empty(&res->mcg_list)) { + pr_err("resource tracker: fail to remove qp, state %d, ref_count %d\n", + res->com.state, atomic_read(&res->ref_count)); return -EBUSY; - else if (res->com.state != RES_QP_RESERVED) + } else if (res->com.state != RES_QP_RESERVED) { return -EPERM; + } return 0; } @@ -3124,6 +3131,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave, struct list_head *rlist = &tracker->slave_list[slave].res_list[RES_MAC]; int err; int qpn; + struct res_qp *rqp; struct mlx4_net_trans_rule_hw_ctrl *ctrl; struct _rule_hw *rule_header; int header_id; @@ -3134,7 +3142,7 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave, ctrl = (struct mlx4_net_trans_rule_hw_ctrl *)inbox->buf; qpn = be32_to_cpu(ctrl->qpn) & 0xffffff; - err = get_res(dev, slave, qpn, RES_QP, NULL); + err = get_res(dev, slave, qpn, RES_QP, &rqp); if (err) { pr_err("Steering rule with qpn 0x%x rejected.\n", qpn); return err; @@ -3175,14 +3183,16 @@ int mlx4_QP_FLOW_STEERING_ATTACH_wrapper(struct mlx4_dev *dev, int slave, if (err) goto err_put; - err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, 0); + err = add_res_range(dev, slave, vhcr->out_param, 1, RES_FS_RULE, qpn); if (err) { mlx4_err(dev, "Fail to add flow steering resources.\n "); /* detach rule*/ mlx4_cmd(dev, vhcr->out_param, 0, 0, MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); + goto err_put; } + atomic_inc(&rqp->ref_count); err_put: put_res(dev, slave, qpn, RES_QP); return err; @@ -3195,20 +3205,35 @@ int mlx4_QP_FLOW_STEERING_DETACH_wrapper(struct mlx4_dev *dev, int slave, struct mlx4_cmd_info *cmd) { int err; + struct res_qp *rqp; + struct res_fs_rule *rrule; if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) return -EOPNOTSUPP; + err = get_res(dev, slave, vhcr->in_param, RES_FS_RULE, &rrule); + if (err) + return err; + /* Release the rule form busy state before removal */ + put_res(dev, slave, vhcr->in_param, RES_FS_RULE); + err = get_res(dev, slave, rrule->qpn, RES_QP, &rqp); + if (err) + return err; + err = rem_res_range(dev, slave, vhcr->in_param, 1, RES_FS_RULE, 0); if (err) { mlx4_err(dev, "Fail to remove flow steering resources.\n "); - return err; + goto out; } err = mlx4_cmd(dev, vhcr->in_param, 0, 0, MLX4_QP_FLOW_STEERING_DETACH, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); + if (!err) + atomic_dec(&rqp->ref_count); +out: + put_res(dev, slave, rrule->qpn, RES_QP); return err; } -- cgit v1.1 From 55a63d4da3b8850480a1c5b222f77c739e30e346 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 21 Mar 2013 17:20:12 +0100 Subject: ALSA: hda - Fix DAC assignment for independent HP The generic parser should evaluate the availability of the independent HP when specified. Otherwise a DAC without the direct connection to the corresponding pin may be assigned for the HP, but the driver doesn't check it at all. The problem was actually seen on some machines with VT1708s or equivalent codec, where DAC0 is assigned to HP although it can be connected only via aamix. This patch adds the badness evaluation for the independent HP to make it working properly. Reported-by: Lydia Wang Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_generic.c | 46 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c index 78897d0..43c2ea5 100644 --- a/sound/pci/hda/hda_generic.c +++ b/sound/pci/hda/hda_generic.c @@ -995,6 +995,8 @@ enum { BAD_NO_EXTRA_SURR_DAC = 0x101, /* Primary DAC shared with main surrounds */ BAD_SHARED_SURROUND = 0x100, + /* No independent HP possible */ + BAD_NO_INDEP_HP = 0x40, /* Primary DAC shared with main CLFE */ BAD_SHARED_CLFE = 0x10, /* Primary DAC shared with extra surrounds */ @@ -1392,6 +1394,43 @@ static int check_aamix_out_path(struct hda_codec *codec, int path_idx) return snd_hda_get_path_idx(codec, path); } +/* check whether the independent HP is available with the current config */ +static bool indep_hp_possible(struct hda_codec *codec) +{ + struct hda_gen_spec *spec = codec->spec; + struct auto_pin_cfg *cfg = &spec->autocfg; + struct nid_path *path; + int i, idx; + + if (cfg->line_out_type == AUTO_PIN_HP_OUT) + idx = spec->out_paths[0]; + else + idx = spec->hp_paths[0]; + path = snd_hda_get_path_from_idx(codec, idx); + if (!path) + return false; + + /* assume no path conflicts unless aamix is involved */ + if (!spec->mixer_nid || !is_nid_contained(path, spec->mixer_nid)) + return true; + + /* check whether output paths contain aamix */ + for (i = 0; i < cfg->line_outs; i++) { + if (spec->out_paths[i] == idx) + break; + path = snd_hda_get_path_from_idx(codec, spec->out_paths[i]); + if (path && is_nid_contained(path, spec->mixer_nid)) + return false; + } + for (i = 0; i < cfg->speaker_outs; i++) { + path = snd_hda_get_path_from_idx(codec, spec->speaker_paths[i]); + if (path && is_nid_contained(path, spec->mixer_nid)) + return false; + } + + return true; +} + /* fill the empty entries in the dac array for speaker/hp with the * shared dac pointed by the paths */ @@ -1545,6 +1584,9 @@ static int fill_and_eval_dacs(struct hda_codec *codec, badness += BAD_MULTI_IO; } + if (spec->indep_hp && !indep_hp_possible(codec)) + badness += BAD_NO_INDEP_HP; + /* re-fill the shared DAC for speaker / headphone */ if (cfg->line_out_type != AUTO_PIN_HP_OUT) refill_shared_dacs(codec, cfg->hp_outs, @@ -1758,6 +1800,10 @@ static int parse_output_paths(struct hda_codec *codec) cfg->speaker_pins, val); } + /* clear indep_hp flag if not available */ + if (spec->indep_hp && !indep_hp_possible(codec)) + spec->indep_hp = 0; + kfree(best_cfg); return 0; } -- cgit v1.1 From ae5fc98728c8bbbd6d7cab0b9781671fc4419c1b Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Thu, 21 Mar 2013 20:33:46 +0400 Subject: net: fix *_DIAG_MAX constants Follow the common pattern and define *_DIAG_MAX like: [...] __XXX_DIAG_MAX, }; Because everyone is used to do: struct nlattr *attrs[XXX_DIAG_MAX+1]; nla_parse([...], XXX_DIAG_MAX, [...] Reported-by: Thomas Graf Cc: "David S. Miller" Cc: Pavel Emelyanov Cc: Eric Dumazet Cc: "Paul E. McKenney" Cc: David Howells Signed-off-by: Andrey Vagin Signed-off-by: David S. Miller --- include/uapi/linux/packet_diag.h | 4 +++- include/uapi/linux/unix_diag.h | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/packet_diag.h b/include/uapi/linux/packet_diag.h index 93f5fa9..afafd70 100644 --- a/include/uapi/linux/packet_diag.h +++ b/include/uapi/linux/packet_diag.h @@ -33,9 +33,11 @@ enum { PACKET_DIAG_TX_RING, PACKET_DIAG_FANOUT, - PACKET_DIAG_MAX, + __PACKET_DIAG_MAX, }; +#define PACKET_DIAG_MAX (__PACKET_DIAG_MAX - 1) + struct packet_diag_info { __u32 pdi_index; __u32 pdi_version; diff --git a/include/uapi/linux/unix_diag.h b/include/uapi/linux/unix_diag.h index b8a2494..b9e2a6a 100644 --- a/include/uapi/linux/unix_diag.h +++ b/include/uapi/linux/unix_diag.h @@ -39,9 +39,11 @@ enum { UNIX_DIAG_MEMINFO, UNIX_DIAG_SHUTDOWN, - UNIX_DIAG_MAX, + __UNIX_DIAG_MAX, }; +#define UNIX_DIAG_MAX (__UNIX_DIAG_MAX - 1) + struct unix_diag_vfs { __u32 udiag_vfs_ino; __u32 udiag_vfs_dev; -- cgit v1.1 From 06ae43f34bcc07a0b6be8bf78a1c895bcd12c839 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 20 Mar 2013 13:19:30 -0400 Subject: Don't bother with redoing rw_verify_area() from default_file_splice_from() default_file_splice_from() ends up calling vfs_write() (via very convoluted callchain). It's an overkill, since we already have done rw_verify_area() in the caller by the time we call vfs_write() we are under set_fs(KERNEL_DS), so access_ok() is also pointless. Add a new helper (__kernel_write()), use it instead of kernel_write() in there. Signed-off-by: Al Viro --- fs/internal.h | 5 +++++ fs/read_write.c | 25 +++++++++++++++++++++++++ fs/splice.c | 4 +++- 3 files changed, 33 insertions(+), 1 deletion(-) diff --git a/fs/internal.h b/fs/internal.h index 507141f..4be7823 100644 --- a/fs/internal.h +++ b/fs/internal.h @@ -125,3 +125,8 @@ extern int invalidate_inodes(struct super_block *, bool); * dcache.c */ extern struct dentry *__d_alloc(struct super_block *, const struct qstr *); + +/* + * read_write.c + */ +extern ssize_t __kernel_write(struct file *, const char *, size_t, loff_t *); diff --git a/fs/read_write.c b/fs/read_write.c index a698eff..f7b5a23 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -17,6 +17,7 @@ #include #include #include "read_write.h" +#include "internal.h" #include #include @@ -417,6 +418,30 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof EXPORT_SYMBOL(do_sync_write); +ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t *pos) +{ + mm_segment_t old_fs; + const char __user *p; + ssize_t ret; + + old_fs = get_fs(); + set_fs(get_ds()); + p = (__force const char __user *)buf; + if (count > MAX_RW_COUNT) + count = MAX_RW_COUNT; + if (file->f_op->write) + ret = file->f_op->write(file, p, count, pos); + else + ret = do_sync_write(file, p, count, pos); + set_fs(old_fs); + if (ret > 0) { + fsnotify_modify(file); + add_wchar(current, ret); + } + inc_syscw(current); + return ret; +} + ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_t *pos) { ssize_t ret; diff --git a/fs/splice.c b/fs/splice.c index 718bd00..29e394e 100644 --- a/fs/splice.c +++ b/fs/splice.c @@ -31,6 +31,7 @@ #include #include #include +#include "internal.h" /* * Attempt to steal a page from a pipe buffer. This should perhaps go into @@ -1048,9 +1049,10 @@ static int write_pipe_buf(struct pipe_inode_info *pipe, struct pipe_buffer *buf, { int ret; void *data; + loff_t tmp = sd->pos; data = buf->ops->map(pipe, buf, 0); - ret = kernel_write(sd->u.file, data + buf->offset, sd->len, sd->pos); + ret = __kernel_write(sd->u.file, data + buf->offset, sd->len, &tmp); buf->ops->unmap(pipe, buf, data); return ret; -- cgit v1.1 From f853c616883a8de966873a1dab283f1369e275a1 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Mon, 11 Mar 2013 09:52:19 -0400 Subject: cifs: ignore everything in SPNEGO blob after mechTypes We've had several reports of people attempting to mount Windows 8 shares and getting failures with a return code of -EINVAL. The default sec= mode changed recently to sec=ntlmssp. With that, we expect and parse a SPNEGO blob from the server in the NEGOTIATE reply. The current decode_negTokenInit function first parses all of the mechTypes and then tries to parse the rest of the negTokenInit reply. The parser however currently expects a mechListMIC or nothing to follow the mechTypes, but Windows 8 puts a mechToken field there instead to carry some info for the new NegoEx stuff. In practice, we don't do anything with the fields after the mechTypes anyway so I don't see any real benefit in continuing to parse them. This patch just has the kernel ignore the fields after the mechTypes. We'll probably need to reinstate some of this if we ever want to support NegoEx. Reported-by: Jason Burgess Reported-by: Yan Li Signed-off-by: Jeff Layton Cc: Signed-off-by: Steve French --- fs/cifs/asn1.c | 53 +++++------------------------------------------------ 1 file changed, 5 insertions(+), 48 deletions(-) diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c index cfd1ce3..1d36db1 100644 --- a/fs/cifs/asn1.c +++ b/fs/cifs/asn1.c @@ -614,53 +614,10 @@ decode_negTokenInit(unsigned char *security_blob, int length, } } - /* mechlistMIC */ - if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) { - /* Check if we have reached the end of the blob, but with - no mechListMic (e.g. NTLMSSP instead of KRB5) */ - if (ctx.error == ASN1_ERR_DEC_EMPTY) - goto decode_negtoken_exit; - cFYI(1, "Error decoding last part negTokenInit exit3"); - return 0; - } else if ((cls != ASN1_CTX) || (con != ASN1_CON)) { - /* tag = 3 indicating mechListMIC */ - cFYI(1, "Exit 4 cls = %d con = %d tag = %d end = %p (%d)", - cls, con, tag, end, *end); - return 0; - } - - /* sequence */ - if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) { - cFYI(1, "Error decoding last part negTokenInit exit5"); - return 0; - } else if ((cls != ASN1_UNI) || (con != ASN1_CON) - || (tag != ASN1_SEQ)) { - cFYI(1, "cls = %d con = %d tag = %d end = %p (%d)", - cls, con, tag, end, *end); - } - - /* sequence of */ - if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) { - cFYI(1, "Error decoding last part negTokenInit exit 7"); - return 0; - } else if ((cls != ASN1_CTX) || (con != ASN1_CON)) { - cFYI(1, "Exit 8 cls = %d con = %d tag = %d end = %p (%d)", - cls, con, tag, end, *end); - return 0; - } - - /* general string */ - if (asn1_header_decode(&ctx, &end, &cls, &con, &tag) == 0) { - cFYI(1, "Error decoding last part negTokenInit exit9"); - return 0; - } else if ((cls != ASN1_UNI) || (con != ASN1_PRI) - || (tag != ASN1_GENSTR)) { - cFYI(1, "Exit10 cls = %d con = %d tag = %d end = %p (%d)", - cls, con, tag, end, *end); - return 0; - } - cFYI(1, "Need to call asn1_octets_decode() function for %s", - ctx.pointer); /* is this UTF-8 or ASCII? */ -decode_negtoken_exit: + /* + * We currently ignore anything at the end of the SPNEGO blob after + * the mechTypes have been parsed, since none of that info is + * used at the moment. + */ return 1; } -- cgit v1.1 From 48a23fac5eb0030a2d578ee2bde21b6e035b3d57 Mon Sep 17 00:00:00 2001 From: Simon Guinot Date: Tue, 19 Mar 2013 20:07:42 +0100 Subject: pinctrl: mvebu: fix checking for SoC specific controls This patch fixes a minor bug (probably due to a typo) while checking the SoC specific controls in mvebu_pinctrl_probe(). Acked-by: Sebastian Hesselbarth Signed-off-by: Simon Guinot Signed-off-by: Linus Walleij --- drivers/pinctrl/mvebu/pinctrl-mvebu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/mvebu/pinctrl-mvebu.c b/drivers/pinctrl/mvebu/pinctrl-mvebu.c index c689c04..2d2f0a4 100644 --- a/drivers/pinctrl/mvebu/pinctrl-mvebu.c +++ b/drivers/pinctrl/mvebu/pinctrl-mvebu.c @@ -620,7 +620,7 @@ int mvebu_pinctrl_probe(struct platform_device *pdev) /* special soc specific control */ if (ctrl->mpp_get || ctrl->mpp_set) { - if (!ctrl->name || !ctrl->mpp_set || !ctrl->mpp_set) { + if (!ctrl->name || !ctrl->mpp_get || !ctrl->mpp_set) { dev_err(&pdev->dev, "wrong soc control info\n"); return -EINVAL; } -- cgit v1.1 From 740924a267e85de09707ea158bbf594b4d8bae01 Mon Sep 17 00:00:00 2001 From: Richard Genoud Date: Thu, 21 Mar 2013 12:21:47 +0100 Subject: pinmux: forbid mux_usecount to be set at UINT_MAX If pin_free is called on a pin already freed, mux_usecount is set to UINT_MAX which is really a bad idea. This will issue a warning, so that we can correct the code responsible for the double free. Signed-off-by: Richard Genoud Reviewed-by: Stephen Warren Signed-off-by: Linus Walleij --- drivers/pinctrl/pinmux.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c index 1a00658..bd83c8b 100644 --- a/drivers/pinctrl/pinmux.c +++ b/drivers/pinctrl/pinmux.c @@ -194,6 +194,11 @@ static const char *pin_free(struct pinctrl_dev *pctldev, int pin, } if (!gpio_range) { + /* + * A pin should not be freed more times than allocated. + */ + if (WARN_ON(!desc->mux_usecount)) + return NULL; desc->mux_usecount--; if (desc->mux_usecount) return NULL; -- cgit v1.1 From 4cec1893d8fe01ef6adc89a135a804acd2989a48 Mon Sep 17 00:00:00 2001 From: Shaik Ameer Basha Date: Thu, 21 Feb 2013 07:54:18 -0300 Subject: [media] fimc-lite: Initialize 'step' field in fimc_lite_ctrl structure v4l2_ctrl_new() uses check_range() for control range checking. This function expects 'step' value for V4L2_CTRL_TYPE_BOOLEAN type control. If 'step' value doesn't match to '1', it returns -ERANGE error. This patch adds the default .step value to 1. Signed-off-by: Shaik Ameer Basha Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/fimc-lite.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/s5p-fimc/fimc-lite.c b/drivers/media/platform/s5p-fimc/fimc-lite.c index bfc4206..bbc35de 100644 --- a/drivers/media/platform/s5p-fimc/fimc-lite.c +++ b/drivers/media/platform/s5p-fimc/fimc-lite.c @@ -1408,6 +1408,7 @@ static const struct v4l2_ctrl_config fimc_lite_ctrl = { .id = V4L2_CTRL_CLASS_USER | 0x1001, .type = V4L2_CTRL_TYPE_BOOLEAN, .name = "Test Pattern 640x480", + .step = 1, }; static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) -- cgit v1.1 From 6a5360966ac44905ecb840dd6c9d736072145df2 Mon Sep 17 00:00:00 2001 From: Shaik Ameer Basha Date: Thu, 21 Feb 2013 07:54:17 -0300 Subject: [media] fimc-lite: Fix the variable type to avoid possible crash Changing the variable type to 'int' from 'unsigned int'. Driver logic expects the variable type to be 'int'. Signed-off-by: Shaik Ameer Basha Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/fimc-lite-reg.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-lite-reg.c b/drivers/media/platform/s5p-fimc/fimc-lite-reg.c index f0af075..ac9663c 100644 --- a/drivers/media/platform/s5p-fimc/fimc-lite-reg.c +++ b/drivers/media/platform/s5p-fimc/fimc-lite-reg.c @@ -128,10 +128,10 @@ static const u32 src_pixfmt_map[8][3] = { void flite_hw_set_source_format(struct fimc_lite *dev, struct flite_frame *f) { enum v4l2_mbus_pixelcode pixelcode = dev->fmt->mbus_code; - unsigned int i = ARRAY_SIZE(src_pixfmt_map); + int i = ARRAY_SIZE(src_pixfmt_map); u32 cfg; - while (i-- >= 0) { + while (--i >= 0) { if (src_pixfmt_map[i][0] == pixelcode) break; } @@ -224,9 +224,9 @@ static void flite_hw_set_out_order(struct fimc_lite *dev, struct flite_frame *f) { V4L2_MBUS_FMT_VYUY8_2X8, FLITE_REG_CIODMAFMT_CRYCBY }, }; u32 cfg = readl(dev->regs + FLITE_REG_CIODMAFMT); - unsigned int i = ARRAY_SIZE(pixcode); + int i = ARRAY_SIZE(pixcode); - while (i-- >= 0) + while (--i >= 0) if (pixcode[i][0] == dev->fmt->mbus_code) break; cfg &= ~FLITE_REG_CIODMAFMT_YCBCR_ORDER_MASK; -- cgit v1.1 From 5d83790be7c88a5ea99ab32ca196d99cf4d177a4 Mon Sep 17 00:00:00 2001 From: Shaik Ameer Basha Date: Wed, 6 Feb 2013 01:46:18 -0300 Subject: [media] exynos-gsc: send valid m2m ctx to gsc_m2m_job_finish gsc_m2m_job_finish() has to be called with the m2m context for the necessary cleanup while resume. But currently gsc_m2m_job_finish() always passes m2m context as NULL. This patch preserves the context before making it null, for necessary cleanup. Use gsc_m2m_opened() instead gsc_m2m_active() in gsc_resume(). Signed-off-by: Shaik Ameer Basha Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos-gsc/gsc-core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/media/platform/exynos-gsc/gsc-core.c b/drivers/media/platform/exynos-gsc/gsc-core.c index 82d9f6a..33b5ffc 100644 --- a/drivers/media/platform/exynos-gsc/gsc-core.c +++ b/drivers/media/platform/exynos-gsc/gsc-core.c @@ -1054,16 +1054,18 @@ static int gsc_m2m_suspend(struct gsc_dev *gsc) static int gsc_m2m_resume(struct gsc_dev *gsc) { + struct gsc_ctx *ctx; unsigned long flags; spin_lock_irqsave(&gsc->slock, flags); /* Clear for full H/W setup in first run after resume */ + ctx = gsc->m2m.ctx; gsc->m2m.ctx = NULL; spin_unlock_irqrestore(&gsc->slock, flags); if (test_and_clear_bit(ST_M2M_SUSPENDED, &gsc->state)) - gsc_m2m_job_finish(gsc->m2m.ctx, - VB2_BUF_STATE_ERROR); + gsc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); + return 0; } @@ -1204,7 +1206,7 @@ static int gsc_resume(struct device *dev) /* Do not resume if the device was idle before system suspend */ spin_lock_irqsave(&gsc->slock, flags); if (!test_and_clear_bit(ST_SUSPEND, &gsc->state) || - !gsc_m2m_active(gsc)) { + !gsc_m2m_opened(gsc)) { spin_unlock_irqrestore(&gsc->slock, flags); return 0; } -- cgit v1.1 From e34a89b39719dd1eb08e0b23c907e98b103078b4 Mon Sep 17 00:00:00 2001 From: Shaik Ameer Basha Date: Wed, 6 Feb 2013 01:47:10 -0300 Subject: [media] s5p-fimc: send valid m2m ctx to fimc_m2m_job_finish fimc_m2m_job_finish() has to be called with the m2m context for the necessary cleanup while resume. But currently fimc_m2m_job_finish() always passes m2m context as NULL. This patch preserves the context before making it null, for necessary cleanup. Signed-off-by: Shaik Ameer Basha Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/fimc-core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-core.c b/drivers/media/platform/s5p-fimc/fimc-core.c index e3916bd..0f513dd 100644 --- a/drivers/media/platform/s5p-fimc/fimc-core.c +++ b/drivers/media/platform/s5p-fimc/fimc-core.c @@ -850,16 +850,18 @@ static int fimc_m2m_suspend(struct fimc_dev *fimc) static int fimc_m2m_resume(struct fimc_dev *fimc) { + struct fimc_ctx *ctx; unsigned long flags; spin_lock_irqsave(&fimc->slock, flags); /* Clear for full H/W setup in first run after resume */ + ctx = fimc->m2m.ctx; fimc->m2m.ctx = NULL; spin_unlock_irqrestore(&fimc->slock, flags); if (test_and_clear_bit(ST_M2M_SUSPENDED, &fimc->state)) - fimc_m2m_job_finish(fimc->m2m.ctx, - VB2_BUF_STATE_ERROR); + fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); + return 0; } -- cgit v1.1 From 90c0ae50097bba165022ddf0a592aa4001e23aaa Mon Sep 17 00:00:00 2001 From: Arun Kumar K Date: Tue, 26 Feb 2013 18:02:11 -0300 Subject: [media] s5p-mfc: Fix frame skip bug The issue was seen in VP8 decoding where the last frame was skipped by the driver. This patch gets the correct frame_type value to fix this bug. Signed-off-by: Arun Kumar K Signed-off-by: Arun Mankuzhi Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-mfc/s5p_mfc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c index e84703c..1cb6d57 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c @@ -276,7 +276,7 @@ static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err) unsigned int frame_type; dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev); - frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev); + frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_disp_frame_type, ctx); /* If frame is same as previous then skip and do not dequeue */ if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) { -- cgit v1.1 From 053e09f319c25fb9c698ad56b9b65058939ec6ef Mon Sep 17 00:00:00 2001 From: Arun Kumar K Date: Wed, 6 Mar 2013 09:15:57 -0300 Subject: [media] s5p-mfc: Fix encoder control 15 issue mfc-encoder is not working in the latest kernel giving the erorr "Adding control (15) failed". Adding the missing step parameter in this control to fix the issue. Signed-off-by: Arun Kumar K Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-mfc/s5p_mfc_enc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c index 2356fd5..4f6b553 100644 --- a/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c +++ b/drivers/media/platform/s5p-mfc/s5p_mfc_enc.c @@ -232,6 +232,7 @@ static struct mfc_control controls[] = { .minimum = 0, .maximum = 1, .default_value = 0, + .step = 1, .menu_skip_mask = 0, }, { -- cgit v1.1 From 8c6ecdd7ce11e737eeffbd78fd6a9d4c47d0b26d Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 5 Feb 2013 15:43:08 -0300 Subject: [media] s5p-fimc: Do not attempt to disable not enabled media pipeline This fixes following warnings when all links are being disconnected: [ 20.080000] WARNING: at drivers/media/platform/s5p-fimc/fimc-mdevice.c:1269 __fimc_md_set_camclk+0x208/0x20c() [ 20.090000] Modules linked in: [ 20.095000] [] (unwind_backtrace+0x0/0x13c) from [] (warn_slowpath_common+0x54/0x64) [ 20.105000] [] (warn_slowpath_common+0x54/0x64) from [] (warn_slowpath_null+0x1c/0x24) [ 20.115000] [] (warn_slowpath_null+0x1c/0x24) from [] (__fimc_md_set_camclk+0x208/0x20c) [ 20.125000] [] (__fimc_md_set_camclk+0x208/0x20c) from [] (__fimc_pipeline_close+0x38/0x48) [ 20.135000] [] (__fimc_pipeline_close+0x38/0x48) from [] (fimc_md_link_notify+0x10c/0x198) [ 20.145000] [] (fimc_md_link_notify+0x10c/0x198) from [] (__media_entity_setup_link+0x1c0/0x1e8) [ 20.155000] [] (__media_entity_setup_link+0x1c0/0x1e8) from [] (media_device_ioctl+0x2c0/0x41c) [ 20.165000] [] (media_device_ioctl+0x2c0/0x41c) from [] (media_ioctl+0x30/0x34) [ 20.175000] [] (media_ioctl+0x30/0x34) from [] (do_vfs_ioctl+0x84/0x5e8) [ 20.185000] [] (do_vfs_ioctl+0x84/0x5e8) from [] (sys_ioctl+0x3c/0x60) [ 20.190000] [] (sys_ioctl+0x3c/0x60) from [] (ret_fast_syscall+0x0/0x30) Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/s5p-fimc/fimc-mdevice.c | 39 +++++++++++++------------- 1 file changed, 19 insertions(+), 20 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c index a17fcb2..cd38d70 100644 --- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c @@ -827,7 +827,7 @@ static int fimc_md_link_notify(struct media_pad *source, struct fimc_pipeline *pipeline; struct v4l2_subdev *sd; struct mutex *lock; - int ret = 0; + int i, ret = 0; int ref_count; if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) @@ -854,29 +854,28 @@ static int fimc_md_link_notify(struct media_pad *source, return 0; } + mutex_lock(lock); + ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; + if (!(flags & MEDIA_LNK_FL_ENABLED)) { - int i; - mutex_lock(lock); - ret = __fimc_pipeline_close(pipeline); + if (ref_count > 0) { + ret = __fimc_pipeline_close(pipeline); + if (!ret && fimc) + fimc_ctrls_delete(fimc->vid_cap.ctx); + } for (i = 0; i < IDX_MAX; i++) pipeline->subdevs[i] = NULL; - if (fimc) - fimc_ctrls_delete(fimc->vid_cap.ctx); - mutex_unlock(lock); - return ret; + } else if (ref_count > 0) { + /* + * Link activation. Enable power of pipeline elements only if + * the pipeline is already in use, i.e. its video node is open. + * Recreate the controls destroyed during the link deactivation. + */ + ret = __fimc_pipeline_open(pipeline, + source->entity, true); + if (!ret && fimc) + ret = fimc_capture_ctrls_create(fimc); } - /* - * Link activation. Enable power of pipeline elements only if the - * pipeline is already in use, i.e. its video node is opened. - * Recreate the controls destroyed during the link deactivation. - */ - mutex_lock(lock); - - ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; - if (ref_count > 0) - ret = __fimc_pipeline_open(pipeline, source->entity, true); - if (!ret && fimc) - ret = fimc_capture_ctrls_create(fimc); mutex_unlock(lock); return ret ? -EPIPE : ret; -- cgit v1.1 From 6ba4d05e84eeb450011f7f3514ec8556d3b46743 Mon Sep 17 00:00:00 2001 From: Andrzej Hajda Date: Wed, 27 Feb 2013 08:21:07 -0300 Subject: [media] m5mols: Fix bug in stream on handler Due to improper condition check streaming start for some pixel formats was prevent and the s_stream just reatuned -EINVAL. This fixes regression introduced in commit 5565a2ad47cdd8e697 [media] m5mols: Protect driver data with a mutex. Signed-off-by: Andrzej Hajda Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/m5mols/m5mols_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index d4e7567..0b899cb 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -724,7 +724,7 @@ static int m5mols_s_stream(struct v4l2_subdev *sd, int enable) if (enable) { if (is_code(code, M5MOLS_RESTYPE_MONITOR)) ret = m5mols_start_monitor(info); - if (is_code(code, M5MOLS_RESTYPE_CAPTURE)) + else if (is_code(code, M5MOLS_RESTYPE_CAPTURE)) ret = m5mols_start_capture(info); else ret = -EINVAL; -- cgit v1.1 From c93d81955005c2ac0ea072f88d376026208410e1 Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sat, 16 Mar 2013 01:30:32 +0400 Subject: usb: cdc-acm: fix error handling in acm_probe() acm_probe() ignores errors in tty_port_register_device() and leaves intfdata pointing to freed memory on alloc_fail7 error path. The patch fixes the both issues. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Acked-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 8ac25ad..c125b61 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -977,6 +977,8 @@ static int acm_probe(struct usb_interface *intf, int num_rx_buf; int i; int combined_interfaces = 0; + struct device *tty_dev; + int rv = -ENOMEM; /* normal quirks */ quirks = (unsigned long)id->driver_info; @@ -1339,11 +1341,24 @@ skip_countries: usb_set_intfdata(data_interface, acm); usb_get_intf(control_interface); - tty_port_register_device(&acm->port, acm_tty_driver, minor, + tty_dev = tty_port_register_device(&acm->port, acm_tty_driver, minor, &control_interface->dev); + if (IS_ERR(tty_dev)) { + rv = PTR_ERR(tty_dev); + goto alloc_fail8; + } return 0; +alloc_fail8: + if (acm->country_codes) { + device_remove_file(&acm->control->dev, + &dev_attr_wCountryCodes); + device_remove_file(&acm->control->dev, + &dev_attr_iCountryCodeRelDate); + } + device_remove_file(&acm->control->dev, &dev_attr_bmCapabilities); alloc_fail7: + usb_set_intfdata(intf, NULL); for (i = 0; i < ACM_NW; i++) usb_free_urb(acm->wb[i].urb); alloc_fail6: @@ -1359,7 +1374,7 @@ alloc_fail2: acm_release_minor(acm); kfree(acm); alloc_fail: - return -ENOMEM; + return rv; } static void stop_data_traffic(struct acm *acm) -- cgit v1.1 From cb25505fc604292c70fc02143fc102f54c8595f0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:06 +0100 Subject: USB: cdc-acm: fix device unregistration Unregister tty device in disconnect as is required by the USB stack. By deferring unregistration to when the last tty reference is dropped, the parent interface device can get unregistered before the child resulting in broken hotplug events being generated when the tty is finally closed: KERNEL[2290.798128] remove /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:3.1 (usb) KERNEL[2290.804589] remove /devices/pci0000:00/0000:00:1d.7/usb2/2-1 (usb) KERNEL[2294.554799] remove /2-1:3.1/tty/ttyACM0 (tty) The driver must deal with tty callbacks after disconnect by checking the disconnected flag. Specifically, further opens must be prevented and this is already implemented. Cc: stable Cc: Oliver Neukum Acked-by: Oliver Neukum Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-acm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index c125b61..387dc6c 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -593,7 +593,6 @@ static void acm_port_destruct(struct tty_port *port) dev_dbg(&acm->control->dev, "%s\n", __func__); - tty_unregister_device(acm_tty_driver, acm->minor); acm_release_minor(acm); usb_put_intf(acm->control); kfree(acm->country_codes); @@ -1426,6 +1425,8 @@ static void acm_disconnect(struct usb_interface *intf) stop_data_traffic(acm); + tty_unregister_device(acm_tty_driver, acm->minor); + usb_free_urb(acm->ctrlurb); for (i = 0; i < ACM_NW; i++) usb_free_urb(acm->wb[i].urb); -- cgit v1.1 From 618aa1068df29c37a58045fe940f9106664153fd Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:07 +0100 Subject: USB: garmin_gps: fix memory leak on disconnect Remove bogus disconnect test introduced by 95bef012e ("USB: more serial drivers writing after disconnect") which prevented queued data from being freed on disconnect. The possible IO it was supposed to prevent is long gone. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/garmin_gps.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/usb/serial/garmin_gps.c b/drivers/usb/serial/garmin_gps.c index 1a07b12..81caf56 100644 --- a/drivers/usb/serial/garmin_gps.c +++ b/drivers/usb/serial/garmin_gps.c @@ -956,10 +956,7 @@ static void garmin_close(struct usb_serial_port *port) if (!serial) return; - mutex_lock(&port->serial->disc_mutex); - - if (!port->serial->disconnected) - garmin_clear(garmin_data_p); + garmin_clear(garmin_data_p); /* shutdown our urbs */ usb_kill_urb(port->read_urb); @@ -968,8 +965,6 @@ static void garmin_close(struct usb_serial_port *port) /* keep reset state so we know that we must start a new session */ if (garmin_data_p->state != STATE_RESET) garmin_data_p->state = STATE_DISCONNECTED; - - mutex_unlock(&port->serial->disc_mutex); } -- cgit v1.1 From 5492bf3d5655b4954164f69c02955a7fca267611 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:08 +0100 Subject: USB: io_ti: fix get_icount for two port adapters Add missing get_icount field to two-port driver. The two-port driver was not updated when switching to the new icount interface in commit 0bca1b913aff ("tty: Convert the USB drivers to the new icount interface"). Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index c237766..d7d3c0e 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -2649,6 +2649,7 @@ static struct usb_serial_driver edgeport_2port_device = { .set_termios = edge_set_termios, .tiocmget = edge_tiocmget, .tiocmset = edge_tiocmset, + .get_icount = edge_get_icount, .write = edge_write, .write_room = edge_write_room, .chars_in_buffer = edge_chars_in_buffer, -- cgit v1.1 From d7971051e4df825e0bc11b995e87bfe86355b8e5 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:09 +0100 Subject: USB: serial: fix interface refcounting Make sure the interface is not released before our serial device. Note that drivers are still not allowed to access the interface in any way that may interfere with another driver that may have gotten bound to the same interface after disconnect returns. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index a19ed74..2e70efa 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -151,6 +151,7 @@ static void destroy_serial(struct kref *kref) } } + usb_put_intf(serial->interface); usb_put_dev(serial->dev); kfree(serial); } @@ -620,7 +621,7 @@ static struct usb_serial *create_serial(struct usb_device *dev, } serial->dev = usb_get_dev(dev); serial->type = driver; - serial->interface = interface; + serial->interface = usb_get_intf(interface); kref_init(&serial->kref); mutex_init(&serial->disc_mutex); serial->minor = SERIAL_TTY_NO_MINOR; -- cgit v1.1 From e5b33dc9d16053c2ae4c2c669cf008829530364b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:10 +0100 Subject: USB: serial: add modem-status-change wait queue Add modem-status-change wait queue to struct usb_serial_port that subdrivers can use to implement TIOCMIWAIT. Currently subdrivers use a private wait queue which may have been released when waking up after device disconnected. Note that we're adding a new wait queue rather than reusing the tty-port one as we do not want to get woken up at hangup (yet). Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- include/linux/usb/serial.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/usb/serial.h b/include/linux/usb/serial.h index ef9be7e..1819b59 100644 --- a/include/linux/usb/serial.h +++ b/include/linux/usb/serial.h @@ -66,6 +66,7 @@ * port. * @flags: usb serial port flags * @write_wait: a wait_queue_head_t used by the port. + * @delta_msr_wait: modem-status-change wait queue * @work: work queue entry for the line discipline waking up. * @throttled: nonzero if the read urb is inactive to throttle the device * @throttle_req: nonzero if the tty wants to throttle us @@ -112,6 +113,7 @@ struct usb_serial_port { unsigned long flags; wait_queue_head_t write_wait; + wait_queue_head_t delta_msr_wait; struct work_struct work; char throttled; char throttle_req; -- cgit v1.1 From 5018860321dc7a9e50a75d5f319bc981298fb5b7 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:11 +0100 Subject: USB: ark3116: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ark3116.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index cbd904b..4775f82 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -62,7 +62,6 @@ static int is_irda(struct usb_serial *serial) } struct ark3116_private { - wait_queue_head_t delta_msr_wait; struct async_icount icount; int irda; /* 1 for irda device */ @@ -146,7 +145,6 @@ static int ark3116_port_probe(struct usb_serial_port *port) if (!priv) return -ENOMEM; - init_waitqueue_head(&priv->delta_msr_wait); mutex_init(&priv->hw_lock); spin_lock_init(&priv->status_lock); @@ -456,10 +454,14 @@ static int ark3116_ioctl(struct tty_struct *tty, case TIOCMIWAIT: for (;;) { struct async_icount prev = priv->icount; - interruptible_sleep_on(&priv->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + if ((prev.rng == priv->icount.rng) && (prev.dsr == priv->icount.dsr) && (prev.dcd == priv->icount.dcd) && @@ -580,7 +582,7 @@ static void ark3116_update_msr(struct usb_serial_port *port, __u8 msr) priv->icount.dcd++; if (msr & UART_MSR_TERI) priv->icount.rng++; - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } } -- cgit v1.1 From fa1e11d5231c001c80a479160b5832933c5d35fb Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:12 +0100 Subject: USB: ch341: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ch341.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index d255f66..07d4650 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -80,7 +80,6 @@ MODULE_DEVICE_TABLE(usb, id_table); struct ch341_private { spinlock_t lock; /* access lock */ - wait_queue_head_t delta_msr_wait; /* wait queue for modem status */ unsigned baud_rate; /* set baud rate */ u8 line_control; /* set line control value RTS/DTR */ u8 line_status; /* active status of modem control inputs */ @@ -252,7 +251,6 @@ static int ch341_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->delta_msr_wait); priv->baud_rate = DEFAULT_BAUD_RATE; priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR; @@ -298,7 +296,7 @@ static void ch341_dtr_rts(struct usb_serial_port *port, int on) priv->line_control &= ~(CH341_BIT_RTS | CH341_BIT_DTR); spin_unlock_irqrestore(&priv->lock, flags); ch341_set_handshake(port->serial->dev, priv->line_control); - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } static void ch341_close(struct usb_serial_port *port) @@ -491,7 +489,7 @@ static void ch341_read_int_callback(struct urb *urb) tty_kref_put(tty); } - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } exit: @@ -517,11 +515,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (!multi_change) { - interruptible_sleep_on(&priv->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); status = priv->line_status; multi_change = priv->multi_status_change; -- cgit v1.1 From 356050d8b1e526db093e9d2c78daf49d6bf418e3 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:13 +0100 Subject: USB: cypress_m8: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Also remove bogus test for private data pointer being NULL as it is never assigned in the loop. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cypress_m8.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 8efa19d..ba7352e 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -111,7 +111,6 @@ struct cypress_private { int baud_rate; /* stores current baud rate in integer form */ int isthrottled; /* if throttled, discard reads */ - wait_queue_head_t delta_msr_wait; /* used for TIOCMIWAIT */ char prev_status, diff_status; /* used for TIOCMIWAIT */ /* we pass a pointer to this as the argument sent to cypress_set_termios old_termios */ @@ -449,7 +448,6 @@ static int cypress_generic_port_probe(struct usb_serial_port *port) kfree(priv); return -ENOMEM; } - init_waitqueue_head(&priv->delta_msr_wait); usb_reset_configuration(serial->dev); @@ -868,12 +866,16 @@ static int cypress_ioctl(struct tty_struct *tty, switch (cmd) { /* This code comes from drivers/char/serial.c and ftdi_sio.c */ case TIOCMIWAIT: - while (priv != NULL) { - interruptible_sleep_on(&priv->delta_msr_wait); + for (;;) { + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; - else { + + if (port->serial->disconnected) + return -EIO; + + { char diff = priv->diff_status; if (diff == 0) return -EIO; /* no change => error */ @@ -1187,7 +1189,7 @@ static void cypress_read_int_callback(struct urb *urb) if (priv->current_status != priv->prev_status) { priv->diff_status |= priv->current_status ^ priv->prev_status; - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); priv->prev_status = priv->current_status; } spin_unlock_irqrestore(&priv->lock, flags); -- cgit v1.1 From 508f940f1407656076a2e7d8f7fa059b567ecac2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:14 +0100 Subject: USB: f81232: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/f81232.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c index b1b2dc6..a172ad5 100644 --- a/drivers/usb/serial/f81232.c +++ b/drivers/usb/serial/f81232.c @@ -47,7 +47,6 @@ MODULE_DEVICE_TABLE(usb, id_table); struct f81232_private { spinlock_t lock; - wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; }; @@ -111,7 +110,7 @@ static void f81232_process_read_urb(struct urb *urb) line_status = priv->line_status; priv->line_status &= ~UART_STATE_TRANSIENT_MASK; spin_unlock_irqrestore(&priv->lock, flags); - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); if (!urb->actual_length) return; @@ -256,11 +255,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - interruptible_sleep_on(&priv->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); status = priv->line_status; spin_unlock_irqrestore(&priv->lock, flags); @@ -322,7 +324,6 @@ static int f81232_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->delta_msr_wait); usb_set_serial_port_data(port, priv); -- cgit v1.1 From 71ccb9b01981fabae27d3c98260ea4613207618e Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:15 +0100 Subject: USB: ftdi_sio: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. When switching to tty ports, some lifetime assumptions were changed. Specifically, close can now be called before the final tty reference is dropped as part of hangup at device disconnect. Even with the ftdi private-data refcounting this means that the port private data can be freed while a process is sleeping on modem-status changes and thus cannot be relied on to detect disconnects when woken up. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index edd162d..d4809d5 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -69,9 +69,7 @@ struct ftdi_private { int flags; /* some ASYNC_xxxx flags are supported */ unsigned long last_dtr_rts; /* saved modem control outputs */ struct async_icount icount; - wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ char prev_status; /* Used for TIOCMIWAIT */ - bool dev_gone; /* Used to abort TIOCMIWAIT */ char transmit_empty; /* If transmitter is empty or not */ __u16 interface; /* FT2232C, FT2232H or FT4232H port interface (0 for FT232/245) */ @@ -1691,10 +1689,8 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) kref_init(&priv->kref); mutex_init(&priv->cfg_lock); - init_waitqueue_head(&priv->delta_msr_wait); priv->flags = ASYNC_LOW_LATENCY; - priv->dev_gone = false; if (quirk && quirk->port_probe) quirk->port_probe(priv); @@ -1840,8 +1836,7 @@ static int ftdi_sio_port_remove(struct usb_serial_port *port) { struct ftdi_private *priv = usb_get_serial_port_data(port); - priv->dev_gone = true; - wake_up_interruptible_all(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); remove_sysfs_attrs(port); @@ -1989,7 +1984,7 @@ static int ftdi_process_packet(struct usb_serial_port *port, if (diff_status & FTDI_RS0_RLSD) priv->icount.dcd++; - wake_up_interruptible_all(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); priv->prev_status = status; } @@ -2440,11 +2435,15 @@ static int ftdi_ioctl(struct tty_struct *tty, */ case TIOCMIWAIT: cprev = priv->icount; - while (!priv->dev_gone) { - interruptible_sleep_on(&priv->delta_msr_wait); + for (;;) { + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = priv->icount; if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || @@ -2454,8 +2453,6 @@ static int ftdi_ioctl(struct tty_struct *tty, } cprev = cnow; } - return -EIO; - break; case TIOCSERGETLSR: return get_lsr_info(port, (struct serial_struct __user *)arg); break; -- cgit v1.1 From 333576255d4cfc53efd056aad438568184b36af6 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:16 +0100 Subject: USB: io_edgeport: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_edgeport.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index b00e5cb..efd8b97 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -110,7 +110,6 @@ struct edgeport_port { wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ - wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ struct async_icount icount; struct usb_serial_port *port; /* loop back to the owner of this object */ @@ -884,7 +883,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) /* initialize our wait queues */ init_waitqueue_head(&edge_port->wait_open); init_waitqueue_head(&edge_port->wait_chase); - init_waitqueue_head(&edge_port->delta_msr_wait); init_waitqueue_head(&edge_port->wait_command); /* initialize our icount structure */ @@ -1669,13 +1667,17 @@ static int edge_ioctl(struct tty_struct *tty, dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__, port->number); cprev = edge_port->icount; while (1) { - prepare_to_wait(&edge_port->delta_msr_wait, + prepare_to_wait(&port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); schedule(); - finish_wait(&edge_port->delta_msr_wait, &wait); + finish_wait(&port->delta_msr_wait, &wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = edge_port->icount; if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) @@ -2051,7 +2053,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr) icount->dcd++; if (newMsr & EDGEPORT_MSR_DELTA_RI) icount->rng++; - wake_up_interruptible(&edge_port->delta_msr_wait); + wake_up_interruptible(&edge_port->port->delta_msr_wait); } /* Save the new modem status */ -- cgit v1.1 From 7b2459690584f239650a365f3411ba2ec1c6d1e0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:17 +0100 Subject: USB: io_ti: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/io_ti.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index d7d3c0e..7777172 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -87,9 +87,6 @@ struct edgeport_port { int close_pending; int lsr_event; struct async_icount icount; - wait_queue_head_t delta_msr_wait; /* for handling sleeping while - waiting for msr change to - happen */ struct edgeport_serial *edge_serial; struct usb_serial_port *port; __u8 bUartMode; /* Port type, 0: RS232, etc. */ @@ -1459,7 +1456,7 @@ static void handle_new_msr(struct edgeport_port *edge_port, __u8 msr) icount->dcd++; if (msr & EDGEPORT_MSR_DELTA_RI) icount->rng++; - wake_up_interruptible(&edge_port->delta_msr_wait); + wake_up_interruptible(&edge_port->port->delta_msr_wait); } /* Save the new modem status */ @@ -1754,7 +1751,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) dev = port->serial->dev; memset(&(edge_port->icount), 0x00, sizeof(edge_port->icount)); - init_waitqueue_head(&edge_port->delta_msr_wait); /* turn off loopback */ status = ti_do_config(edge_port, UMPC_SET_CLR_LOOPBACK, 0); @@ -2434,10 +2430,14 @@ static int edge_ioctl(struct tty_struct *tty, dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); cprev = edge_port->icount; while (1) { - interruptible_sleep_on(&edge_port->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = edge_port->icount; if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) -- cgit v1.1 From cf1d24443677a0758cfa88ca40f24858b89261c0 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:18 +0100 Subject: USB: mct_u232: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mct_u232.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index a64d420..06d5a60 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -114,8 +114,6 @@ struct mct_u232_private { unsigned char last_msr; /* Modem Status Register */ unsigned int rx_flags; /* Throttling flags */ struct async_icount icount; - wait_queue_head_t msr_wait; /* for handling sleeping while waiting - for msr change to happen */ }; #define THROTTLED 0x01 @@ -409,7 +407,6 @@ static int mct_u232_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->msr_wait); usb_set_serial_port_data(port, priv); @@ -601,7 +598,7 @@ static void mct_u232_read_int_callback(struct urb *urb) tty_kref_put(tty); } #endif - wake_up_interruptible(&priv->msr_wait); + wake_up_interruptible(&port->delta_msr_wait); spin_unlock_irqrestore(&priv->lock, flags); exit: retval = usb_submit_urb(urb, GFP_ATOMIC); @@ -810,13 +807,17 @@ static int mct_u232_ioctl(struct tty_struct *tty, cprev = mct_u232_port->icount; spin_unlock_irqrestore(&mct_u232_port->lock, flags); for ( ; ; ) { - prepare_to_wait(&mct_u232_port->msr_wait, + prepare_to_wait(&port->delta_msr_wait, &wait, TASK_INTERRUPTIBLE); schedule(); - finish_wait(&mct_u232_port->msr_wait, &wait); + finish_wait(&port->delta_msr_wait, &wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&mct_u232_port->lock, flags); cnow = mct_u232_port->icount; spin_unlock_irqrestore(&mct_u232_port->lock, flags); -- cgit v1.1 From e670c6af12517d08a403487b1122eecf506021cf Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:19 +0100 Subject: USB: mos7840: fix broken TIOCMIWAIT Make sure waiting processes are woken on modem-status changes. Currently processes are only woken on termios changes regardless of whether the modem status has changed. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7840.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 809fb32..1b83b01 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -423,6 +423,9 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) icount->rng++; smp_wmb(); } + + mos7840_port->delta_msr_cond = 1; + wake_up_interruptible(&mos7840_port->delta_msr_wait); } } @@ -2017,8 +2020,6 @@ static void mos7840_change_port_settings(struct tty_struct *tty, mos7840_port->read_urb_busy = false; } } - wake_up(&mos7840_port->delta_msr_wait); - mos7840_port->delta_msr_cond = 1; dev_dbg(&port->dev, "%s - mos7840_port->shadowLCR is End %x\n", __func__, mos7840_port->shadowLCR); } -- cgit v1.1 From a14430db686b8e459e1cf070a6ecf391515c9ab9 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:20 +0100 Subject: USB: mos7840: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/mos7840.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 1b83b01..b8051fa 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -219,7 +219,6 @@ struct moschip_port { char open; char open_ports; wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ - wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ int delta_msr_cond; struct async_icount icount; struct usb_serial_port *port; /* loop back to the owner of this object */ @@ -425,7 +424,7 @@ static void mos7840_handle_new_msr(struct moschip_port *port, __u8 new_msr) } mos7840_port->delta_msr_cond = 1; - wake_up_interruptible(&mos7840_port->delta_msr_wait); + wake_up_interruptible(&port->port->delta_msr_wait); } } @@ -1130,7 +1129,6 @@ static int mos7840_open(struct tty_struct *tty, struct usb_serial_port *port) /* initialize our wait queues */ init_waitqueue_head(&mos7840_port->wait_chase); - init_waitqueue_head(&mos7840_port->delta_msr_wait); /* initialize our icount structure */ memset(&(mos7840_port->icount), 0x00, sizeof(mos7840_port->icount)); @@ -2220,13 +2218,18 @@ static int mos7840_ioctl(struct tty_struct *tty, while (1) { /* interruptible_sleep_on(&mos7840_port->delta_msr_wait); */ mos7840_port->delta_msr_cond = 0; - wait_event_interruptible(mos7840_port->delta_msr_wait, - (mos7840_port-> + wait_event_interruptible(port->delta_msr_wait, + (port->serial->disconnected || + mos7840_port-> delta_msr_cond == 1)); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = mos7840_port->icount; smp_rmb(); if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && -- cgit v1.1 From 8edfdab37157d2683e51b8be5d3d5697f66a9f7b Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:21 +0100 Subject: USB: oti6858: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/oti6858.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index a958fd4..87c71cc 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -188,7 +188,6 @@ struct oti6858_private { u8 setup_done; struct delayed_work delayed_setup_work; - wait_queue_head_t intr_wait; struct usb_serial_port *port; /* USB port with which associated */ }; @@ -339,7 +338,6 @@ static int oti6858_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->intr_wait); priv->port = port; INIT_DELAYED_WORK(&priv->delayed_setup_work, setup_line); INIT_DELAYED_WORK(&priv->delayed_write_work, send_data); @@ -664,11 +662,15 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - wait_event_interruptible(priv->intr_wait, + wait_event_interruptible(port->delta_msr_wait, + port->serial->disconnected || priv->status.pin_state != prev); if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); status = priv->status.pin_state & PIN_MASK; spin_unlock_irqrestore(&priv->lock, flags); @@ -763,7 +765,7 @@ static void oti6858_read_int_callback(struct urb *urb) if (!priv->transient) { if (xs->pin_state != priv->status.pin_state) - wake_up_interruptible(&priv->intr_wait); + wake_up_interruptible(&port->delta_msr_wait); memcpy(&priv->status, xs, OTI6858_CTRL_PKT_SIZE); } -- cgit v1.1 From 40509ca982c00c4b70fc00be887509feca0bff15 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:22 +0100 Subject: USB: pl2303: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index 54adc91..3b10018 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -139,7 +139,6 @@ struct pl2303_serial_private { struct pl2303_private { spinlock_t lock; - wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; }; @@ -233,7 +232,6 @@ static int pl2303_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->delta_msr_wait); usb_set_serial_port_data(port, priv); @@ -607,11 +605,14 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - interruptible_sleep_on(&priv->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); status = priv->line_status; spin_unlock_irqrestore(&priv->lock, flags); @@ -719,7 +720,7 @@ static void pl2303_update_line_status(struct usb_serial_port *port, spin_unlock_irqrestore(&priv->lock, flags); if (priv->line_status & UART_BREAK_ERROR) usb_serial_handle_break(port); - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); tty = tty_port_tty_get(&port->port); if (!tty) @@ -783,7 +784,7 @@ static void pl2303_process_read_urb(struct urb *urb) line_status = priv->line_status; priv->line_status &= ~UART_STATE_TRANSIENT_MASK; spin_unlock_irqrestore(&priv->lock, flags); - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); if (!urb->actual_length) return; -- cgit v1.1 From 69f87f40d2b98e8b4ab82a121fd2bd584690b887 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:23 +0100 Subject: USB: quatech2: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/quatech2.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index d643a4d..75f125d 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -128,7 +128,6 @@ struct qt2_port_private { u8 shadowLSR; u8 shadowMSR; - wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ struct async_icount icount; struct usb_serial_port *port; @@ -506,8 +505,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - wait_event_interruptible(priv->delta_msr_wait, - ((priv->icount.rng != prev.rng) || + wait_event_interruptible(port->delta_msr_wait, + (port->serial->disconnected || + (priv->icount.rng != prev.rng) || (priv->icount.dsr != prev.dsr) || (priv->icount.dcd != prev.dcd) || (priv->icount.cts != prev.cts))); @@ -515,6 +515,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); cur = priv->icount; spin_unlock_irqrestore(&priv->lock, flags); @@ -827,7 +830,6 @@ static int qt2_port_probe(struct usb_serial_port *port) spin_lock_init(&port_priv->lock); spin_lock_init(&port_priv->urb_lock); - init_waitqueue_head(&port_priv->delta_msr_wait); port_priv->port = port; port_priv->write_urb = usb_alloc_urb(0, GFP_KERNEL); @@ -970,7 +972,7 @@ static void qt2_update_msr(struct usb_serial_port *port, unsigned char *ch) if (newMSR & UART_MSR_TERI) port_priv->icount.rng++; - wake_up_interruptible(&port_priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } } -- cgit v1.1 From dbcea7615d8d7d58f6ff49d2c5568113f70effe9 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:24 +0100 Subject: USB: spcp8x5: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/spcp8x5.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index 91ff8e3..549ef68 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -149,7 +149,6 @@ enum spcp8x5_type { struct spcp8x5_private { spinlock_t lock; enum spcp8x5_type type; - wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; }; @@ -179,7 +178,6 @@ static int spcp8x5_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->lock); - init_waitqueue_head(&priv->delta_msr_wait); priv->type = type; usb_set_serial_port_data(port , priv); @@ -475,7 +473,7 @@ static void spcp8x5_process_read_urb(struct urb *urb) priv->line_status &= ~UART_STATE_TRANSIENT_MASK; spin_unlock_irqrestore(&priv->lock, flags); /* wake up the wait for termios */ - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); if (!urb->actual_length) return; @@ -526,12 +524,15 @@ static int spcp8x5_wait_modem_info(struct usb_serial_port *port, while (1) { /* wake up in bulk read */ - interruptible_sleep_on(&priv->delta_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); /* see if a signal did it */ if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->lock, flags); status = priv->line_status; spin_unlock_irqrestore(&priv->lock, flags); -- cgit v1.1 From 43a66b4c417ad15f6d2f632ce67ad195bdf999e8 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:25 +0100 Subject: USB: ssu100: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ssu100.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/usb/serial/ssu100.c b/drivers/usb/serial/ssu100.c index b57cf84..4b2a197 100644 --- a/drivers/usb/serial/ssu100.c +++ b/drivers/usb/serial/ssu100.c @@ -61,7 +61,6 @@ struct ssu100_port_private { spinlock_t status_lock; u8 shadowLSR; u8 shadowMSR; - wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ struct async_icount icount; }; @@ -355,8 +354,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->status_lock, flags); while (1) { - wait_event_interruptible(priv->delta_msr_wait, - ((priv->icount.rng != prev.rng) || + wait_event_interruptible(port->delta_msr_wait, + (port->serial->disconnected || + (priv->icount.rng != prev.rng) || (priv->icount.dsr != prev.dsr) || (priv->icount.dcd != prev.dcd) || (priv->icount.cts != prev.cts))); @@ -364,6 +364,9 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) if (signal_pending(current)) return -ERESTARTSYS; + if (port->serial->disconnected) + return -EIO; + spin_lock_irqsave(&priv->status_lock, flags); cur = priv->icount; spin_unlock_irqrestore(&priv->status_lock, flags); @@ -445,7 +448,6 @@ static int ssu100_port_probe(struct usb_serial_port *port) return -ENOMEM; spin_lock_init(&priv->status_lock); - init_waitqueue_head(&priv->delta_msr_wait); usb_set_serial_port_data(port, priv); @@ -537,7 +539,7 @@ static void ssu100_update_msr(struct usb_serial_port *port, u8 msr) priv->icount.dcd++; if (msr & UART_MSR_TERI) priv->icount.rng++; - wake_up_interruptible(&priv->delta_msr_wait); + wake_up_interruptible(&port->delta_msr_wait); } } -- cgit v1.1 From fc98ab873aa3dbe783ce56a2ffdbbe7c7609521a Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 19 Mar 2013 09:21:26 +0100 Subject: USB: ti_usb_3410_5052: fix use-after-free in TIOCMIWAIT Use the port wait queue and make sure to check the serial disconnected flag before accessing private port data after waking up. This is is needed as the private port data (including the wait queue itself) can be gone when waking up after a disconnect. Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ti_usb_3410_5052.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 39cb9b8..73deb029f 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -74,7 +74,6 @@ struct ti_port { int tp_flags; int tp_closing_wait;/* in .01 secs */ struct async_icount tp_icount; - wait_queue_head_t tp_msr_wait; /* wait for msr change */ wait_queue_head_t tp_write_wait; struct ti_device *tp_tdev; struct usb_serial_port *tp_port; @@ -432,7 +431,6 @@ static int ti_port_probe(struct usb_serial_port *port) else tport->tp_uart_base_addr = TI_UART2_BASE_ADDR; tport->tp_closing_wait = closing_wait; - init_waitqueue_head(&tport->tp_msr_wait); init_waitqueue_head(&tport->tp_write_wait); if (kfifo_alloc(&tport->write_fifo, TI_WRITE_BUF_SIZE, GFP_KERNEL)) { kfree(tport); @@ -784,9 +782,13 @@ static int ti_ioctl(struct tty_struct *tty, dev_dbg(&port->dev, "%s - TIOCMIWAIT\n", __func__); cprev = tport->tp_icount; while (1) { - interruptible_sleep_on(&tport->tp_msr_wait); + interruptible_sleep_on(&port->delta_msr_wait); if (signal_pending(current)) return -ERESTARTSYS; + + if (port->serial->disconnected) + return -EIO; + cnow = tport->tp_icount; if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) @@ -1392,7 +1394,7 @@ static void ti_handle_new_msr(struct ti_port *tport, __u8 msr) icount->dcd++; if (msr & TI_MSR_DELTA_RI) icount->rng++; - wake_up_interruptible(&tport->tp_msr_wait); + wake_up_interruptible(&tport->tp_port->delta_msr_wait); spin_unlock_irqrestore(&tport->tp_lock, flags); } -- cgit v1.1 From d763448286377b8a0e3f179372e9e292bef3c337 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Mon, 11 Mar 2013 09:20:00 +0000 Subject: Btrfs: update to use fs_state bit Now that we use bit operation to check fs_state, update btrfs_free_fs_root()'s checker, otherwise we get back to memory leak case. Signed-off-by: Liu Bo Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/disk-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 7d84651..127b23e 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3253,7 +3253,7 @@ void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root) if (btrfs_root_refs(&root->root_item) == 0) synchronize_srcu(&fs_info->subvol_srcu); - if (fs_info->fs_state & BTRFS_SUPER_FLAG_ERROR) { + if (test_bit(BTRFS_FS_STATE_ERROR, &fs_info->fs_state)) { btrfs_free_log(NULL, root); btrfs_free_log_root_tree(NULL, fs_info); } -- cgit v1.1 From 835d974fabfa9bff4d173ad03c054ac2f673263f Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Tue, 19 Mar 2013 12:13:25 -0400 Subject: Btrfs: handle a bogus chunk tree nicely If you restore a btrfs-image file system and try to mount that file system we'll panic. That's because btrfs-image restores and just makes one big chunk to envelope the whole disk, since they are really only meant to be messed with by our btrfs-progs. So fix up btrfs_rmap_block and the callers of it for mount so that we no longer panic but instead just return an error and fail to mount. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 35 ++++++++++++++++++++++++++++++----- fs/btrfs/volumes.c | 13 ++++++++++++- 2 files changed, 42 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 350b9b1..a8ff25a 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -257,7 +257,8 @@ static int exclude_super_stripes(struct btrfs_root *root, cache->bytes_super += stripe_len; ret = add_excluded_extent(root, cache->key.objectid, stripe_len); - BUG_ON(ret); /* -ENOMEM */ + if (ret) + return ret; } for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) { @@ -265,13 +266,17 @@ static int exclude_super_stripes(struct btrfs_root *root, ret = btrfs_rmap_block(&root->fs_info->mapping_tree, cache->key.objectid, bytenr, 0, &logical, &nr, &stripe_len); - BUG_ON(ret); /* -ENOMEM */ + if (ret) + return ret; while (nr--) { cache->bytes_super += stripe_len; ret = add_excluded_extent(root, logical[nr], stripe_len); - BUG_ON(ret); /* -ENOMEM */ + if (ret) { + kfree(logical); + return ret; + } } kfree(logical); @@ -7964,7 +7969,17 @@ int btrfs_read_block_groups(struct btrfs_root *root) * info has super bytes accounted for, otherwise we'll think * we have more space than we actually do. */ - exclude_super_stripes(root, cache); + ret = exclude_super_stripes(root, cache); + if (ret) { + /* + * We may have excluded something, so call this just in + * case. + */ + free_excluded_extents(root, cache); + kfree(cache->free_space_ctl); + kfree(cache); + goto error; + } /* * check for two cases, either we are full, and therefore @@ -8106,7 +8121,17 @@ int btrfs_make_block_group(struct btrfs_trans_handle *trans, cache->last_byte_to_unpin = (u64)-1; cache->cached = BTRFS_CACHE_FINISHED; - exclude_super_stripes(root, cache); + ret = exclude_super_stripes(root, cache); + if (ret) { + /* + * We may have excluded something, so call this just in + * case. + */ + free_excluded_extents(root, cache); + kfree(cache->free_space_ctl); + kfree(cache); + return ret; + } add_new_free_space(cache, root->fs_info, chunk_offset, chunk_offset + size); diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 5989a92..2854c82 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -4935,7 +4935,18 @@ int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree, em = lookup_extent_mapping(em_tree, chunk_start, 1); read_unlock(&em_tree->lock); - BUG_ON(!em || em->start != chunk_start); + if (!em) { + printk(KERN_ERR "btrfs: couldn't find em for chunk %Lu\n", + chunk_start); + return -EIO; + } + + if (em->start != chunk_start) { + printk(KERN_ERR "btrfs: bad chunk start, em=%Lu, wanted=%Lu\n", + em->start, chunk_start); + free_extent_map(em); + return -EIO; + } map = (struct map_lookup *)em->bdev; length = em->len; -- cgit v1.1 From 6113077cd319e747875ec71227d2b5cb54e08c76 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Tue, 19 Mar 2013 10:57:14 +0000 Subject: Btrfs: fix missing qgroup reservation before fallocating Steps to reproduce: mkfs.btrfs mount btrfs quota enable btrfs sub create /subv btrfs qgroup limit 10M /subv fallocate --length 20M /subv/data For the above example, fallocating will return successfully which is not expected, we try to fix it by doing qgroup reservation before fallocating. Signed-off-by: Wang Shilong Reviewed-by: Miao Xie Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/file.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 7bdb47f..1be25b9 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -2142,6 +2142,7 @@ static long btrfs_fallocate(struct file *file, int mode, { struct inode *inode = file->f_path.dentry->d_inode; struct extent_state *cached_state = NULL; + struct btrfs_root *root = BTRFS_I(inode)->root; u64 cur_offset; u64 last_byte; u64 alloc_start; @@ -2169,6 +2170,11 @@ static long btrfs_fallocate(struct file *file, int mode, ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start); if (ret) return ret; + if (root->fs_info->quota_enabled) { + ret = btrfs_qgroup_reserve(root, alloc_end - alloc_start); + if (ret) + goto out_reserve_fail; + } /* * wait for ordered IO before we have any locks. We'll loop again @@ -2272,6 +2278,9 @@ static long btrfs_fallocate(struct file *file, int mode, &cached_state, GFP_NOFS); out: mutex_unlock(&inode->i_mutex); + if (root->fs_info->quota_enabled) + btrfs_qgroup_free(root, alloc_end - alloc_start); +out_reserve_fail: /* Let go of our reservation. */ btrfs_free_reserved_data_space(inode, alloc_end - alloc_start); return ret; -- cgit v1.1 From d9abbf1c3131b679379762700201ae69367f3f62 Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Wed, 20 Mar 2013 13:49:48 +0000 Subject: Btrfs: fix locking on ROOT_REPLACE operations in tree mod log To resolve backrefs, ROOT_REPLACE operations in the tree mod log are required to be tied to at least one KEY_REMOVE_WHILE_FREEING operation. Therefore, those operations must be enclosed by tree_mod_log_write_lock() and tree_mod_log_write_unlock() calls. Those calls are private to the tree_mod_log_* functions, which means that removal of the elements of an old root node must be logged from tree_mod_log_insert_root. This partly reverts and corrects commit ba1bfbd5 (Btrfs: fix a tree mod logging issue for root replacement operations). This fixes the brand-new version of xfstest 276 as of commit cfe73f71. Cc: stable@vger.kernel.org Signed-off-by: Jan Schmidt Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/ctree.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index ecd25a1..ca9d8f1 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -651,6 +651,8 @@ tree_mod_log_insert_root(struct btrfs_fs_info *fs_info, if (tree_mod_dont_log(fs_info, NULL)) return 0; + __tree_mod_log_free_eb(fs_info, old_root); + ret = tree_mod_alloc(fs_info, flags, &tm); if (ret < 0) goto out; @@ -736,7 +738,7 @@ tree_mod_log_search(struct btrfs_fs_info *fs_info, u64 start, u64 min_seq) static noinline void tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst, struct extent_buffer *src, unsigned long dst_offset, - unsigned long src_offset, int nr_items) + unsigned long src_offset, int nr_items, int log_removal) { int ret; int i; @@ -750,10 +752,12 @@ tree_mod_log_eb_copy(struct btrfs_fs_info *fs_info, struct extent_buffer *dst, } for (i = 0; i < nr_items; i++) { - ret = tree_mod_log_insert_key_locked(fs_info, src, - i + src_offset, - MOD_LOG_KEY_REMOVE); - BUG_ON(ret < 0); + if (log_removal) { + ret = tree_mod_log_insert_key_locked(fs_info, src, + i + src_offset, + MOD_LOG_KEY_REMOVE); + BUG_ON(ret < 0); + } ret = tree_mod_log_insert_key_locked(fs_info, dst, i + dst_offset, MOD_LOG_KEY_ADD); @@ -927,7 +931,6 @@ static noinline int update_ref_for_cow(struct btrfs_trans_handle *trans, ret = btrfs_dec_ref(trans, root, buf, 1, 1); BUG_ON(ret); /* -ENOMEM */ } - tree_mod_log_free_eb(root->fs_info, buf); clean_tree_block(trans, root, buf); *last_ref = 1; } @@ -1046,6 +1049,7 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans, btrfs_set_node_ptr_generation(parent, parent_slot, trans->transid); btrfs_mark_buffer_dirty(parent); + tree_mod_log_free_eb(root->fs_info, buf); btrfs_free_tree_block(trans, root, buf, parent_start, last_ref); } @@ -1750,7 +1754,6 @@ static noinline int balance_level(struct btrfs_trans_handle *trans, goto enospc; } - tree_mod_log_free_eb(root->fs_info, root->node); tree_mod_log_set_root_pointer(root, child); rcu_assign_pointer(root->node, child); @@ -2995,7 +2998,7 @@ static int push_node_left(struct btrfs_trans_handle *trans, push_items = min(src_nritems - 8, push_items); tree_mod_log_eb_copy(root->fs_info, dst, src, dst_nritems, 0, - push_items); + push_items, 1); copy_extent_buffer(dst, src, btrfs_node_key_ptr_offset(dst_nritems), btrfs_node_key_ptr_offset(0), @@ -3066,7 +3069,7 @@ static int balance_node_right(struct btrfs_trans_handle *trans, sizeof(struct btrfs_key_ptr)); tree_mod_log_eb_copy(root->fs_info, dst, src, 0, - src_nritems - push_items, push_items); + src_nritems - push_items, push_items, 1); copy_extent_buffer(dst, src, btrfs_node_key_ptr_offset(0), btrfs_node_key_ptr_offset(src_nritems - push_items), @@ -3218,12 +3221,18 @@ static noinline int split_node(struct btrfs_trans_handle *trans, int mid; int ret; u32 c_nritems; + int tree_mod_log_removal = 1; c = path->nodes[level]; WARN_ON(btrfs_header_generation(c) != trans->transid); if (c == root->node) { /* trying to split the root, lets make a new one */ ret = insert_new_root(trans, root, path, level + 1); + /* + * removal of root nodes has been logged by + * tree_mod_log_set_root_pointer due to locking + */ + tree_mod_log_removal = 0; if (ret) return ret; } else { @@ -3261,7 +3270,8 @@ static noinline int split_node(struct btrfs_trans_handle *trans, (unsigned long)btrfs_header_chunk_tree_uuid(split), BTRFS_UUID_SIZE); - tree_mod_log_eb_copy(root->fs_info, split, c, 0, mid, c_nritems - mid); + tree_mod_log_eb_copy(root->fs_info, split, c, 0, mid, c_nritems - mid, + tree_mod_log_removal); copy_extent_buffer(split, c, btrfs_node_key_ptr_offset(0), btrfs_node_key_ptr_offset(mid), -- cgit v1.1 From 1dd05682b3ef6e70409e130bfd83e91770801589 Mon Sep 17 00:00:00 2001 From: Tsutomu Itoh Date: Thu, 21 Mar 2013 04:32:32 +0000 Subject: Btrfs: fix memory leak in btrfs_create_tree() We should free leaf and root before returning from the error handling code. Signed-off-by: Tsutomu Itoh Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/disk-io.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 127b23e..6d19a0a 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -1291,6 +1291,7 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, 0, objectid, NULL, 0, 0, 0); if (IS_ERR(leaf)) { ret = PTR_ERR(leaf); + leaf = NULL; goto fail; } @@ -1334,11 +1335,16 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, btrfs_tree_unlock(leaf); + return root; + fail: - if (ret) - return ERR_PTR(ret); + if (leaf) { + btrfs_tree_unlock(leaf); + free_extent_buffer(leaf); + } + kfree(root); - return root; + return ERR_PTR(ret); } static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans, -- cgit v1.1 From f564c24103f87dc740c1c293c975565ac46b12ef Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Thu, 21 Mar 2013 17:32:36 -0700 Subject: x86, microcode_intel_early: Mark apply_microcode_early() as cpuinit Add missing __cpuinit annotation to apply_microcode_early(). Reported-by: Shaun Ruffell Cc: Fenghua Yu Link: http://lkml.kernel.org/r/20130320170310.GA23362@digium.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/microcode_intel_early.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/microcode_intel_early.c b/arch/x86/kernel/microcode_intel_early.c index 5992ee8..d893e8e 100644 --- a/arch/x86/kernel/microcode_intel_early.c +++ b/arch/x86/kernel/microcode_intel_early.c @@ -659,8 +659,8 @@ static inline void __cpuinit print_ucode(struct ucode_cpu_info *uci) } #endif -static int apply_microcode_early(struct mc_saved_data *mc_saved_data, - struct ucode_cpu_info *uci) +static int __cpuinit apply_microcode_early(struct mc_saved_data *mc_saved_data, + struct ucode_cpu_info *uci) { struct microcode_intel *mc_intel; unsigned int val[2]; -- cgit v1.1 From d31c3a81893e3416ea519d1b1383f319c046641f Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Mon, 4 Mar 2013 23:03:19 +0200 Subject: omapfb: fix broken build on OMAP1 Fix the following build regression in 3.9-rc1 by including : drivers/video/omap/omapfb_main.c: In function 'set_fb_var': drivers/video/omap/omapfb_main.c:505:3: error: implicit declaration of function 'cpu_is_omap15xx' [-Werror=implicit-function-declaration] Signed-off-by: Aaro Koskinen Signed-off-by: Tomi Valkeinen --- drivers/video/omap/omapfb_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/video/omap/omapfb_main.c b/drivers/video/omap/omapfb_main.c index e31f5b3..d40612c 100644 --- a/drivers/video/omap/omapfb_main.c +++ b/drivers/video/omap/omapfb_main.c @@ -32,6 +32,8 @@ #include +#include + #include "omapfb.h" #include "lcdc.h" -- cgit v1.1 From a2f9b2a5607e494e6b98b0101aaa731b42454ad0 Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Sun, 17 Feb 2013 02:43:12 +0200 Subject: OMAPDSS: tpo-td043 panel: fix data passing between SPI/DSS parts This driver uses omap_dss_device that it gets from a board file through SPI platfrom_data pointer to pass data from SPI to DSS portion of the driver by using dev_set_drvdata(). However this trick no longer works, as DSS core no longer uses omap_dss_device from a board file to create the real device, so use a global pointer to accomplish this instead, like other SPI panel drivers do. Signed-off-by: Grazvydas Ignotas Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays/panel-tpo-td043mtea1.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c index 6b66439..048c983 100644 --- a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c +++ b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c @@ -63,6 +63,9 @@ struct tpo_td043_device { u32 power_on_resume:1; }; +/* used to pass spi_device from SPI to DSS portion of the driver */ +static struct tpo_td043_device *g_tpo_td043; + static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data) { struct spi_message m; @@ -403,7 +406,7 @@ static void tpo_td043_disable(struct omap_dss_device *dssdev) static int tpo_td043_probe(struct omap_dss_device *dssdev) { - struct tpo_td043_device *tpo_td043 = dev_get_drvdata(&dssdev->dev); + struct tpo_td043_device *tpo_td043 = g_tpo_td043; int nreset_gpio = dssdev->reset_gpio; int ret = 0; @@ -440,6 +443,8 @@ static int tpo_td043_probe(struct omap_dss_device *dssdev) if (ret) dev_warn(&dssdev->dev, "failed to create sysfs files\n"); + dev_set_drvdata(&dssdev->dev, tpo_td043); + return 0; fail_gpio_req: @@ -505,6 +510,9 @@ static int tpo_td043_spi_probe(struct spi_device *spi) return -ENODEV; } + if (g_tpo_td043 != NULL) + return -EBUSY; + spi->bits_per_word = 16; spi->mode = SPI_MODE_0; @@ -521,7 +529,7 @@ static int tpo_td043_spi_probe(struct spi_device *spi) tpo_td043->spi = spi; tpo_td043->nreset_gpio = dssdev->reset_gpio; dev_set_drvdata(&spi->dev, tpo_td043); - dev_set_drvdata(&dssdev->dev, tpo_td043); + g_tpo_td043 = tpo_td043; omap_dss_register_driver(&tpo_td043_driver); @@ -534,6 +542,7 @@ static int tpo_td043_spi_remove(struct spi_device *spi) omap_dss_unregister_driver(&tpo_td043_driver); kfree(tpo_td043); + g_tpo_td043 = NULL; return 0; } -- cgit v1.1 From ff588d83bf12fe05521a64e85dd4e2b848c0b20d Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Tue, 5 Mar 2013 19:47:50 +0530 Subject: omapdss: features: fix supported outputs for OMAP4 The support outputs struct for overlay managers is incorrect for OMAP4. Make these changes: - DPI isn't supported via the LCD1 overlay manager, remove DPI as a supported output. - the TV manager can suppport DPI, but the omapdss driver doesn't support that yet, we require some muxing at the DSS level, and we also need to configure the hdmi pll in the DPI driver so that the TV manager has a pixel clock. We don't support that yet. Signed-off-by: Archit Taneja Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dss_features.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/video/omap2/dss/dss_features.c b/drivers/video/omap2/dss/dss_features.c index d7d66ef..7f791ae 100644 --- a/drivers/video/omap2/dss/dss_features.c +++ b/drivers/video/omap2/dss/dss_features.c @@ -202,12 +202,10 @@ static const enum omap_dss_output_id omap3630_dss_supported_outputs[] = { static const enum omap_dss_output_id omap4_dss_supported_outputs[] = { /* OMAP_DSS_CHANNEL_LCD */ - OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI | - OMAP_DSS_OUTPUT_DSI1, + OMAP_DSS_OUTPUT_DBI | OMAP_DSS_OUTPUT_DSI1, /* OMAP_DSS_CHANNEL_DIGIT */ - OMAP_DSS_OUTPUT_VENC | OMAP_DSS_OUTPUT_HDMI | - OMAP_DSS_OUTPUT_DPI, + OMAP_DSS_OUTPUT_VENC | OMAP_DSS_OUTPUT_HDMI, /* OMAP_DSS_CHANNEL_LCD2 */ OMAP_DSS_OUTPUT_DPI | OMAP_DSS_OUTPUT_DBI | -- cgit v1.1 From 132c803f7b70b17322579f6f4f3f65cf68e55135 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 15 Mar 2013 05:34:08 +0000 Subject: i2c: tegra: check the clk_prepare_enable() return value NVIDIA's Tegra SoC allows read/write of controller register only if controller clock is enabled. System hangs if read/write happens to registers without enabling clock. clk_prepare_enable() can be fail due to unknown reason and hence adding check for return value of this function. If this function success then only access register otherwise return to caller with error. Signed-off-by: Laxman Dewangan Reviewed-by: Stephen Warren Signed-off-by: Wolfram Sang Cc: stable@kernel.org --- drivers/i2c/busses/i2c-tegra.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index 36704e3..b714776 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -411,7 +411,11 @@ static int tegra_i2c_init(struct tegra_i2c_dev *i2c_dev) int clk_multiplier = I2C_CLK_MULTIPLIER_STD_FAST_MODE; u32 clk_divisor; - tegra_i2c_clock_enable(i2c_dev); + err = tegra_i2c_clock_enable(i2c_dev); + if (err < 0) { + dev_err(i2c_dev->dev, "Clock enable failed %d\n", err); + return err; + } tegra_periph_reset_assert(i2c_dev->div_clk); udelay(2); @@ -628,7 +632,12 @@ static int tegra_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], if (i2c_dev->is_suspended) return -EBUSY; - tegra_i2c_clock_enable(i2c_dev); + ret = tegra_i2c_clock_enable(i2c_dev); + if (ret < 0) { + dev_err(i2c_dev->dev, "Clock enable failed %d\n", ret); + return ret; + } + for (i = 0; i < num; i++) { enum msg_end_type end_type = MSG_END_STOP; if (i < (num - 1)) { -- cgit v1.1 From 488b926923f6da5b90555cddb624ad783f4952b0 Mon Sep 17 00:00:00 2001 From: Seth Heasley Date: Thu, 21 Feb 2013 12:30:43 +0000 Subject: i2c: iSMT: add Intel Avoton DeviceIDs This patch adds the iSMT SMBus Controller DeviceIDs for the Intel Avoton SOC. Signed-off-by: Seth Heasley Acked-by: Neil Horman Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-ismt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-ismt.c b/drivers/i2c/busses/i2c-ismt.c index e9205ee..130f02c 100644 --- a/drivers/i2c/busses/i2c-ismt.c +++ b/drivers/i2c/busses/i2c-ismt.c @@ -80,6 +80,7 @@ /* PCI DIDs for the Intel SMBus Message Transport (SMT) Devices */ #define PCI_DEVICE_ID_INTEL_S1200_SMT0 0x0c59 #define PCI_DEVICE_ID_INTEL_S1200_SMT1 0x0c5a +#define PCI_DEVICE_ID_INTEL_AVOTON_SMT 0x1f15 #define ISMT_DESC_ENTRIES 32 /* number of descriptor entries */ #define ISMT_MAX_RETRIES 3 /* number of SMBus retries to attempt */ @@ -185,6 +186,7 @@ struct ismt_priv { static const DEFINE_PCI_DEVICE_TABLE(ismt_ids) = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT0) }, { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_S1200_SMT1) }, + { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_AVOTON_SMT) }, { 0, } }; -- cgit v1.1 From b104153e366396e6a631ee3c9d95c26ece36523b Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 26 Feb 2013 06:03:52 +0000 Subject: i2c: Fix my e-mail address in drivers and documentation My old e-mail address is no longer working. Signed-off-by: Guenter Roeck Signed-off-by: Wolfram Sang --- Documentation/i2c/busses/i2c-diolan-u2c | 2 +- drivers/i2c/muxes/i2c-mux-pca9541.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/i2c/busses/i2c-diolan-u2c b/Documentation/i2c/busses/i2c-diolan-u2c index 30fe4bb..0d6018c 100644 --- a/Documentation/i2c/busses/i2c-diolan-u2c +++ b/Documentation/i2c/busses/i2c-diolan-u2c @@ -5,7 +5,7 @@ Supported adapters: Documentation: http://www.diolan.com/i2c/u2c12.html -Author: Guenter Roeck +Author: Guenter Roeck Description ----------- diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c index f3b8f9a..966a18a 100644 --- a/drivers/i2c/muxes/i2c-mux-pca9541.c +++ b/drivers/i2c/muxes/i2c-mux-pca9541.c @@ -3,7 +3,7 @@ * * Copyright (c) 2010 Ericsson AB. * - * Author: Guenter Roeck + * Author: Guenter Roeck * * Derived from: * pca954x.c -- cgit v1.1 From 888f2804e46377b54f283707f87c09922ef87eb2 Mon Sep 17 00:00:00 2001 From: Ludovic Desroches Date: Fri, 15 Mar 2013 05:32:57 +0000 Subject: MAINTAINERS: add maintainer entry for atmel i2c driver Create an entry for atmel i2c driver: i2c-at91.c Signed-off-by: Ludovic Desroches Acked-by: Nicolas Ferre Signed-off-by: Wolfram Sang --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 50b4d73..23fa78b 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1467,6 +1467,12 @@ F: drivers/dma/at_hdmac.c F: drivers/dma/at_hdmac_regs.h F: include/linux/platform_data/dma-atmel.h +ATMEL I2C DRIVER +M: Ludovic Desroches +L: linux-i2c@vger.kernel.org +S: Supported +F: drivers/i2c/busses/i2c-at91.c + ATMEL ISI DRIVER M: Josh Wu L: linux-media@vger.kernel.org -- cgit v1.1 From 09a6e1f4ad32243989b30485f78985c0923284cd Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Fri, 22 Mar 2013 08:08:06 -0300 Subject: Revert "KVM: allow host header to be included even for !CONFIG_KVM" This reverts commit f445f11eb2cc265dd47da5b2e864df46cd6e5a82 as it breaks PPC with CONFIG_KVM=n. Signed-off-by: Marcelo Tosatti --- include/linux/kvm_host.h | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index a942863..cad77fe 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1,8 +1,6 @@ #ifndef __KVM_HOST_H #define __KVM_HOST_H -#if IS_ENABLED(CONFIG_KVM) - /* * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. @@ -1057,8 +1055,5 @@ static inline bool kvm_vcpu_eligible_for_directed_yield(struct kvm_vcpu *vcpu) } #endif /* CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT */ -#else -static inline void __guest_enter(void) { return; } -static inline void __guest_exit(void) { return; } -#endif /* IS_ENABLED(CONFIG_KVM) */ #endif + -- cgit v1.1 From 949dd8c14fb2b20b4b815817e66120b22cf531d4 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 19 Mar 2013 14:35:30 -0400 Subject: xen/acpi-processor: Don't dereference struct acpi_processor on all CPUs. With git commit c705c78c0d0835a4aa5d0d9a3422e3218462030c "acpi: Export the acpi_processor_get_performance_info" we are now using a different mechanism to access the P-states. The acpi_processor per-cpu structure is set and filtered by the core ACPI code which shrinks the per_cpu contents to only online CPUs. In the past we would call acpi_processor_register_performance() which would have not tried to dereference offline cpus. With the new patch and the fact that the loop we take is for for_all_possible_cpus we end up crashing on some machines. We could modify the loop to be for online_cpus - but all the other loops in the code use possible_cpus (for a good reason) - so lets leave it as so and just check if per_cpu(processor) is NULL. With this patch we will bypass the !online but possible CPUs. This fixes: IP: [] xen_acpi_processor_init+0x1b6/0xe01 [xen_acpi_processor] PGD 4126e6067 PUD 4126e3067 PMD 0 Oops: 0002 [#1] SMP Pid: 432, comm: modprobe Not tainted 3.9.0-rc3+ #28 To be filled by O.E.M. To be filled by O.E.M./M5A97 RIP: e030:[] [] xen_acpi_processor_init+0x1b6/0xe01 [xen_acpi_processor] RSP: e02b:ffff88040c8a3ce8 EFLAGS: 00010282 .. snip.. Call Trace: [] ? read_acpi_id+0x12b/0x12b [xen_acpi_processor] [] do_one_initcall+0x12a/0x180 [] load_module+0x1cd3/0x2870 [] ? ddebug_proc_open+0xc0/0xc0 [] sys_init_module+0xd7/0x120 [] system_call_fastpath+0x16/0x1b on some machines. Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xen-acpi-processor.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c index f3278a6..90e34ac 100644 --- a/drivers/xen/xen-acpi-processor.c +++ b/drivers/xen/xen-acpi-processor.c @@ -505,6 +505,9 @@ static int __init xen_acpi_processor_init(void) pr = per_cpu(processors, i); perf = per_cpu_ptr(acpi_perf_data, i); + if (!pr) + continue; + pr->performance = perf; rc = acpi_processor_get_performance_info(pr); if (rc) -- cgit v1.1 From 909b3fdb0dd4f3db07b2d75425a00a2adb551383 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 12 Mar 2013 15:06:23 +0000 Subject: xen-pciback: notify hypervisor about devices intended to be assigned to guests For MSI-X capable devices the hypervisor wants to write protect the MSI-X table and PBA, yet it can't assume that resources have been assigned to their final values at device enumeration time. Thus have pciback do that notification, as having the device controlled by it is a prerequisite to assigning the device to guests anyway. This is the kernel part of hypervisor side commit 4245d33 ("x86/MSI: add mechanism to fully protect MSI-X table from PV guest accesses") on the master branch of git://xenbits.xen.org/xen.git. CC: stable@vger.kernel.org Signed-off-by: Jan Beulich Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/include/asm/xen/hypercall.h | 4 +-- drivers/xen/fallback.c | 3 +- drivers/xen/xen-pciback/pci_stub.c | 59 +++++++++++++++++++++++++++--------- include/xen/interface/physdev.h | 6 ++++ 4 files changed, 54 insertions(+), 18 deletions(-) diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h index c20d1ce..e709884 100644 --- a/arch/x86/include/asm/xen/hypercall.h +++ b/arch/x86/include/asm/xen/hypercall.h @@ -382,14 +382,14 @@ HYPERVISOR_console_io(int cmd, int count, char *str) return _hypercall3(int, console_io, cmd, count, str); } -extern int __must_check HYPERVISOR_physdev_op_compat(int, void *); +extern int __must_check xen_physdev_op_compat(int, void *); static inline int HYPERVISOR_physdev_op(int cmd, void *arg) { int rc = _hypercall2(int, physdev_op, cmd, arg); if (unlikely(rc == -ENOSYS)) - rc = HYPERVISOR_physdev_op_compat(cmd, arg); + rc = xen_physdev_op_compat(cmd, arg); return rc; } diff --git a/drivers/xen/fallback.c b/drivers/xen/fallback.c index 0ef7c4d..b04fb64 100644 --- a/drivers/xen/fallback.c +++ b/drivers/xen/fallback.c @@ -44,7 +44,7 @@ int xen_event_channel_op_compat(int cmd, void *arg) } EXPORT_SYMBOL_GPL(xen_event_channel_op_compat); -int HYPERVISOR_physdev_op_compat(int cmd, void *arg) +int xen_physdev_op_compat(int cmd, void *arg) { struct physdev_op op; int rc; @@ -78,3 +78,4 @@ int HYPERVISOR_physdev_op_compat(int cmd, void *arg) return rc; } +EXPORT_SYMBOL_GPL(xen_physdev_op_compat); diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c index 9204126..a2278ba 100644 --- a/drivers/xen/xen-pciback/pci_stub.c +++ b/drivers/xen/xen-pciback/pci_stub.c @@ -17,6 +17,7 @@ #include #include #include +#include #include "pciback.h" #include "conf_space.h" #include "conf_space_quirks.h" @@ -85,37 +86,52 @@ static struct pcistub_device *pcistub_device_alloc(struct pci_dev *dev) static void pcistub_device_release(struct kref *kref) { struct pcistub_device *psdev; + struct pci_dev *dev; struct xen_pcibk_dev_data *dev_data; psdev = container_of(kref, struct pcistub_device, kref); - dev_data = pci_get_drvdata(psdev->dev); + dev = psdev->dev; + dev_data = pci_get_drvdata(dev); - dev_dbg(&psdev->dev->dev, "pcistub_device_release\n"); + dev_dbg(&dev->dev, "pcistub_device_release\n"); - xen_unregister_device_domain_owner(psdev->dev); + xen_unregister_device_domain_owner(dev); /* Call the reset function which does not take lock as this * is called from "unbind" which takes a device_lock mutex. */ - __pci_reset_function_locked(psdev->dev); - if (pci_load_and_free_saved_state(psdev->dev, - &dev_data->pci_saved_state)) { - dev_dbg(&psdev->dev->dev, "Could not reload PCI state\n"); - } else - pci_restore_state(psdev->dev); + __pci_reset_function_locked(dev); + if (pci_load_and_free_saved_state(dev, &dev_data->pci_saved_state)) + dev_dbg(&dev->dev, "Could not reload PCI state\n"); + else + pci_restore_state(dev); + + if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) { + struct physdev_pci_device ppdev = { + .seg = pci_domain_nr(dev->bus), + .bus = dev->bus->number, + .devfn = dev->devfn + }; + int err = HYPERVISOR_physdev_op(PHYSDEVOP_release_msix, + &ppdev); + + if (err) + dev_warn(&dev->dev, "MSI-X release failed (%d)\n", + err); + } /* Disable the device */ - xen_pcibk_reset_device(psdev->dev); + xen_pcibk_reset_device(dev); kfree(dev_data); - pci_set_drvdata(psdev->dev, NULL); + pci_set_drvdata(dev, NULL); /* Clean-up the device */ - xen_pcibk_config_free_dyn_fields(psdev->dev); - xen_pcibk_config_free_dev(psdev->dev); + xen_pcibk_config_free_dyn_fields(dev); + xen_pcibk_config_free_dev(dev); - psdev->dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED; - pci_dev_put(psdev->dev); + dev->dev_flags &= ~PCI_DEV_FLAGS_ASSIGNED; + pci_dev_put(dev); kfree(psdev); } @@ -355,6 +371,19 @@ static int pcistub_init_device(struct pci_dev *dev) if (err) goto config_release; + if (pci_find_capability(dev, PCI_CAP_ID_MSIX)) { + struct physdev_pci_device ppdev = { + .seg = pci_domain_nr(dev->bus), + .bus = dev->bus->number, + .devfn = dev->devfn + }; + + err = HYPERVISOR_physdev_op(PHYSDEVOP_prepare_msix, &ppdev); + if (err) + dev_err(&dev->dev, "MSI-X preparation failed (%d)\n", + err); + } + /* We need the device active to save the state. */ dev_dbg(&dev->dev, "save state of device\n"); pci_save_state(dev); diff --git a/include/xen/interface/physdev.h b/include/xen/interface/physdev.h index 1844d31..7000bb1 100644 --- a/include/xen/interface/physdev.h +++ b/include/xen/interface/physdev.h @@ -251,6 +251,12 @@ struct physdev_pci_device_add { #define PHYSDEVOP_pci_device_remove 26 #define PHYSDEVOP_restore_msi_ext 27 +/* + * Dom0 should use these two to announce MMIO resources assigned to + * MSI-X capable devices won't (prepare) or may (release) change. + */ +#define PHYSDEVOP_prepare_msix 30 +#define PHYSDEVOP_release_msix 31 struct physdev_pci_device { /* IN */ uint16_t seg; -- cgit v1.1 From f4541d60a449afd40448b06496dcd510f505928e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 21 Mar 2013 17:36:09 +0000 Subject: tcp: preserve ACK clocking in TSO A long standing problem with TSO is the fact that tcp_tso_should_defer() rearms the deferred timer, while it should not. Current code leads to following bad bursty behavior : 20:11:24.484333 IP A > B: . 297161:316921(19760) ack 1 win 119 20:11:24.484337 IP B > A: . ack 263721 win 1117 20:11:24.485086 IP B > A: . ack 265241 win 1117 20:11:24.485925 IP B > A: . ack 266761 win 1117 20:11:24.486759 IP B > A: . ack 268281 win 1117 20:11:24.487594 IP B > A: . ack 269801 win 1117 20:11:24.488430 IP B > A: . ack 271321 win 1117 20:11:24.489267 IP B > A: . ack 272841 win 1117 20:11:24.490104 IP B > A: . ack 274361 win 1117 20:11:24.490939 IP B > A: . ack 275881 win 1117 20:11:24.491775 IP B > A: . ack 277401 win 1117 20:11:24.491784 IP A > B: . 316921:332881(15960) ack 1 win 119 20:11:24.492620 IP B > A: . ack 278921 win 1117 20:11:24.493448 IP B > A: . ack 280441 win 1117 20:11:24.494286 IP B > A: . ack 281961 win 1117 20:11:24.495122 IP B > A: . ack 283481 win 1117 20:11:24.495958 IP B > A: . ack 285001 win 1117 20:11:24.496791 IP B > A: . ack 286521 win 1117 20:11:24.497628 IP B > A: . ack 288041 win 1117 20:11:24.498459 IP B > A: . ack 289561 win 1117 20:11:24.499296 IP B > A: . ack 291081 win 1117 20:11:24.500133 IP B > A: . ack 292601 win 1117 20:11:24.500970 IP B > A: . ack 294121 win 1117 20:11:24.501388 IP B > A: . ack 295641 win 1117 20:11:24.501398 IP A > B: . 332881:351881(19000) ack 1 win 119 While the expected behavior is more like : 20:19:49.259620 IP A > B: . 197601:202161(4560) ack 1 win 119 20:19:49.260446 IP B > A: . ack 154281 win 1212 20:19:49.261282 IP B > A: . ack 155801 win 1212 20:19:49.262125 IP B > A: . ack 157321 win 1212 20:19:49.262136 IP A > B: . 202161:206721(4560) ack 1 win 119 20:19:49.262958 IP B > A: . ack 158841 win 1212 20:19:49.263795 IP B > A: . ack 160361 win 1212 20:19:49.264628 IP B > A: . ack 161881 win 1212 20:19:49.264637 IP A > B: . 206721:211281(4560) ack 1 win 119 20:19:49.265465 IP B > A: . ack 163401 win 1212 20:19:49.265886 IP B > A: . ack 164921 win 1212 20:19:49.266722 IP B > A: . ack 166441 win 1212 20:19:49.266732 IP A > B: . 211281:215841(4560) ack 1 win 119 20:19:49.267559 IP B > A: . ack 167961 win 1212 20:19:49.268394 IP B > A: . ack 169481 win 1212 20:19:49.269232 IP B > A: . ack 171001 win 1212 20:19:49.269241 IP A > B: . 215841:221161(5320) ack 1 win 119 Signed-off-by: Eric Dumazet Cc: Yuchung Cheng Cc: Van Jacobson Cc: Neal Cardwell Cc: Nandita Dukkipati Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 817fbb3..5d0b438 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1809,8 +1809,11 @@ static bool tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb) goto send_now; } - /* Ok, it looks like it is advisable to defer. */ - tp->tso_deferred = 1 | (jiffies << 1); + /* Ok, it looks like it is advisable to defer. + * Do not rearm the timer if already set to not break TCP ACK clocking. + */ + if (!tp->tso_deferred) + tp->tso_deferred = 1 | (jiffies << 1); return true; -- cgit v1.1 From d137c8306c748d89260400176613b5a85574b255 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 22 Mar 2013 08:58:23 -0600 Subject: mtip32xx: fix error return code in mtip_pci_probe() Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 11cc952..92250af 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -4224,6 +4224,7 @@ static int mtip_pci_probe(struct pci_dev *pdev, dd->isr_workq = create_workqueue(dd->workq_name); if (!dd->isr_workq) { dev_warn(&pdev->dev, "Can't create wq %d\n", dd->instance); + rv = -ENOMEM; goto block_initialize_err; } @@ -4282,7 +4283,8 @@ static int mtip_pci_probe(struct pci_dev *pdev, INIT_WORK(&dd->work[7].work, mtip_workq_sdbf7); pci_set_master(pdev); - if (pci_enable_msi(pdev)) { + rv = pci_enable_msi(pdev); + if (rv) { dev_warn(&pdev->dev, "Unable to enable MSI interrupt.\n"); goto block_initialize_err; -- cgit v1.1 From 183cfb5720dfc393641b87710ce78561af3db6cd Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 22 Mar 2013 08:59:19 -0600 Subject: loop: fix error return code in loop_add() Fix to return a negative error code from the error handling case, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Jens Axboe --- drivers/block/loop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index 747bb2a..ee13a82 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1623,6 +1623,7 @@ static int loop_add(struct loop_device **l, int i) goto out_free_dev; i = err; + err = -ENOMEM; lo->lo_queue = blk_alloc_queue(GFP_KERNEL); if (!lo->lo_queue) goto out_free_dev; -- cgit v1.1 From 8761a3dc1f07b163414e2215a2cadbb4cfe2a107 Mon Sep 17 00:00:00 2001 From: Phillip Susi Date: Fri, 22 Mar 2013 12:21:53 -0600 Subject: loop: cleanup partitions when detaching loop device Any partitions added by user space to the loop device were being left in place after detaching the loop device. This was because the detach path issued a BLKRRPART to clean up partitions if LO_FLAGS_PARTSCAN was set, meaning that the partitions were auto scanned on attach. Replace this BLKRRPART with code that unconditionally cleans up partitions on detach instead. Signed-off-by: Phillip Susi Modified by Jens to export delete_partition(). Signed-off-by: Jens Axboe --- block/partition-generic.c | 1 + drivers/block/loop.c | 21 +++++++++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/block/partition-generic.c b/block/partition-generic.c index 789cdea..ae95ee6 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -257,6 +257,7 @@ void delete_partition(struct gendisk *disk, int partno) hd_struct_put(part); } +EXPORT_SYMBOL(delete_partition); static ssize_t whole_disk_show(struct device *dev, struct device_attribute *attr, char *buf) diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ee13a82..fe5f640 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1044,12 +1044,29 @@ static int loop_clr_fd(struct loop_device *lo) lo->lo_state = Lo_unbound; /* This is safe: open() is still holding a reference. */ module_put(THIS_MODULE); - if (lo->lo_flags & LO_FLAGS_PARTSCAN && bdev) - ioctl_by_bdev(bdev, BLKRRPART, 0); lo->lo_flags = 0; if (!part_shift) lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN; mutex_unlock(&lo->lo_ctl_mutex); + + /* + * Remove all partitions, since BLKRRPART won't remove user + * added partitions when max_part=0 + */ + if (bdev) { + struct disk_part_iter piter; + struct hd_struct *part; + + mutex_lock_nested(&bdev->bd_mutex, 1); + invalidate_partition(bdev->bd_disk, 0); + disk_part_iter_init(&piter, bdev->bd_disk, + DISK_PITER_INCL_EMPTY); + while ((part = disk_part_iter_next(&piter))) + delete_partition(bdev->bd_disk, part->partno); + disk_part_iter_exit(&piter); + mutex_unlock(&bdev->bd_mutex); + } + /* * Need not hold lo_ctl_mutex to fput backing file. * Calling fput holding lo_ctl_mutex triggers a circular -- cgit v1.1 From d2b805d89510737ea80c1469f854a16480d19778 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 22 Mar 2013 09:11:00 -0600 Subject: cciss: fix invalid use of sizeof in cciss_find_cfgtables() sizeof() when applied to a pointer typed expression gives the size of the pointer, not that of the pointed data. Signed-off-by: Wei Yongjun Acked-by: scameron@beardog.cce.hp.com Signed-off-by: Jens Axboe --- drivers/block/cciss.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c index ade58bc..1c1b8e5 100644 --- a/drivers/block/cciss.c +++ b/drivers/block/cciss.c @@ -4206,7 +4206,7 @@ static int cciss_find_cfgtables(ctlr_info_t *h) if (rc) return rc; h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev, - cfg_base_addr_index) + cfg_offset, sizeof(h->cfgtable)); + cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable)); if (!h->cfgtable) return -ENOMEM; rc = write_driver_ver_to_cfgtable(h->cfgtable); -- cgit v1.1 From f2fc7d0eddf86b0233faa34aa5af6780ea48bc08 Mon Sep 17 00:00:00 2001 From: Alice Ferrazzi Date: Fri, 22 Mar 2013 11:11:04 -0600 Subject: Block: blk-flush: Fixed indent code style Fixed code indent should use tabs where possible. Signed-off-by: Alice Ferrazzi Signed-off-by: Jens Axboe --- block/blk-flush.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-flush.c b/block/blk-flush.c index db8f1b5..cc2b827 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -444,7 +444,7 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask, * copied from blk_rq_pos(rq). */ if (error_sector) - *error_sector = bio->bi_sector; + *error_sector = bio->bi_sector; if (!bio_flagged(bio, BIO_UPTODATE)) ret = -EIO; -- cgit v1.1 From 51f0885e5415b4cc6535e9cdcc5145bfbc134353 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 22 Mar 2013 11:44:04 -0700 Subject: vfs,proc: guarantee unique inodes in /proc Dave Jones found another /proc issue with his Trinity tool: thanks to the namespace model, we can have multiple /proc dentries that point to the same inode, aliasing directories in /proc//net/ for example. This ends up being a total disaster, because it acts like hardlinked directories, and causes locking problems. We rely on the topological sort of the inodes pointed to by dentries, and if we have aliased directories, that odering becomes unreliable. In short: don't do this. Multiple dentries with the same (directory) inode is just a bad idea, and the namespace code should never have exposed things this way. But we're kind of stuck with it. This solves things by just always allocating a new inode during /proc dentry lookup, instead of using "iget_locked()" to look up existing inodes by superblock and number. That actually simplies the code a bit, at the cost of potentially doing more inode [de]allocations. That said, the inode lookup wasn't free either (and did a lot of locking of inodes), so it is probably not that noticeable. We could easily keep the old lookup model for non-directory entries, but rather than try to be excessively clever this just implements the minimal and simplest workaround for the problem. Reported-and-tested-by: Dave Jones Analyzed-by: Al Viro Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- fs/proc/inode.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/proc/inode.c b/fs/proc/inode.c index a86aebc..869116c 100644 --- a/fs/proc/inode.c +++ b/fs/proc/inode.c @@ -446,9 +446,10 @@ static const struct file_operations proc_reg_file_ops_no_compat = { struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) { - struct inode *inode = iget_locked(sb, de->low_ino); + struct inode *inode = new_inode_pseudo(sb); - if (inode && (inode->i_state & I_NEW)) { + if (inode) { + inode->i_ino = de->low_ino; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; PROC_I(inode)->pde = de; @@ -476,7 +477,6 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de) inode->i_fop = de->proc_fops; } } - unlock_new_inode(inode); } else pde_put(de); return inode; -- cgit v1.1 From 122090366d1d5c6ec1bfb6dfdb3a6d121ff074aa Mon Sep 17 00:00:00 2001 From: Keith Busch Date: Thu, 31 Jan 2013 14:40:38 -0700 Subject: NVMe: Add namespaces with no LBA range feature The LBA Range Type feature is optional in the NVMe specification, so we should continue with adding namespaces for controllers that do not implement this feature. Signed-off-by: Keith Busch Signed-off-by: Matthew Wilcox --- drivers/block/nvme.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/nvme.c b/drivers/block/nvme.c index 993c014..e209ec5 100644 --- a/drivers/block/nvme.c +++ b/drivers/block/nvme.c @@ -1540,7 +1540,7 @@ static int __devinit nvme_dev_add(struct nvme_dev *dev) res = nvme_get_features(dev, NVME_FEAT_LBA_RANGE, i, dma_addr + 4096, NULL); if (res) - continue; + memset(mem + 4096, 0, 4096); ns = nvme_alloc_ns(dev, i, mem, mem + 4096); if (ns) -- cgit v1.1 From ca0ba26fbbd2d81c43085df49ce0abfe34535a90 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 22 Mar 2013 19:56:51 +0000 Subject: efivars: Fix check for CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE The 'CONFIG_' prefix is not implicit in IS_ENABLED(). Signed-off-by: Ben Hutchings Cc: Seth Forshee Cc: Signed-off-by: Matt Fleming --- drivers/firmware/efivars.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index d64661f..7acafb8 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -104,7 +104,7 @@ MODULE_VERSION(EFIVARS_VERSION); #define GUID_LEN 36 static bool efivars_pstore_disable = - IS_ENABLED(EFI_VARS_PSTORE_DEFAULT_DISABLE); + IS_ENABLED(CONFIG_EFI_VARS_PSTORE_DEFAULT_DISABLE); module_param_named(pstore_disable, efivars_pstore_disable, bool, 0644); -- cgit v1.1 From 57471c8d3c22873f70813820e6b4d2d1fea9629d Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 22 Mar 2013 12:35:06 -0600 Subject: ARM: tegra: fix register address of slink controller Fix typo on register address of slink3 controller where register address is wrongly set as 0x7000d480 but it is 0x7000d800. Signed-off-by: Laxman Dewangan Cc: Signed-off-by: Stephen Warren Signed-off-by: Arnd Bergmann --- arch/arm/boot/dts/tegra20.dtsi | 2 +- arch/arm/boot/dts/tegra30.dtsi | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index 48d00a0..3d3f64d 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -385,7 +385,7 @@ spi@7000d800 { compatible = "nvidia,tegra20-slink"; - reg = <0x7000d480 0x200>; + reg = <0x7000d800 0x200>; interrupts = <0 83 0x04>; nvidia,dma-request-selector = <&apbdma 17>; #address-cells = <1>; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index 9d87a3f..dbf46c2 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -372,7 +372,7 @@ spi@7000d800 { compatible = "nvidia,tegra30-slink", "nvidia,tegra20-slink"; - reg = <0x7000d480 0x200>; + reg = <0x7000d800 0x200>; interrupts = <0 83 0x04>; nvidia,dma-request-selector = <&apbdma 17>; #address-cells = <1>; -- cgit v1.1 From e49dbbf3e770aa590a8a464ac4978a09027060b9 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Fri, 22 Mar 2013 11:18:24 -0700 Subject: nfsd: fix bad offset use vfs_writev() updates the offset argument - but the code then passes the offset to vfs_fsync_range(). Since offset now points to the offset after what was just written, this is probably not what was intended Introduced by face15025ffdf664de95e86ae831544154d26c9c "nfsd: use vfs_fsync_range(), not O_SYNC, for stable writes". Signed-off-by: Kent Overstreet Cc: Al Viro Cc: "Eric W. Biederman" Cc: stable@vger.kernel.org Reviewed-by: Zach Brown Signed-off-by: J. Bruce Fields --- fs/nfsd/vfs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 2a7eb53..2b2e2396 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -1013,6 +1013,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, int host_err; int stable = *stablep; int use_wgather; + loff_t pos = offset; dentry = file->f_path.dentry; inode = dentry->d_inode; @@ -1025,7 +1026,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, /* Write the data. */ oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &offset); + host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos); set_fs(oldfs); if (host_err < 0) goto out_nfserr; -- cgit v1.1 From c69d72aec52eb5234f433259ac5dcc3b68f1480d Mon Sep 17 00:00:00 2001 From: Kevin Hilman Date: Wed, 28 Nov 2012 15:46:45 -0800 Subject: MAINTAINERS: update email address for Kevin Hilman Signed-off-by: Kevin Hilman Signed-off-by: Arnd Bergmann --- MAINTAINERS | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 50b4d73..89573ca 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5675,7 +5675,7 @@ S: Maintained F: arch/arm/*omap*/*clock* OMAP POWER MANAGEMENT SUPPORT -M: Kevin Hilman +M: Kevin Hilman L: linux-omap@vger.kernel.org S: Maintained F: arch/arm/*omap*/*pm* @@ -5769,7 +5769,7 @@ F: arch/arm/*omap*/usb* OMAP GPIO DRIVER M: Santosh Shilimkar -M: Kevin Hilman +M: Kevin Hilman L: linux-omap@vger.kernel.org S: Maintained F: drivers/gpio/gpio-omap.c @@ -7165,7 +7165,7 @@ F: arch/arm/mach-s3c2410/bast-irq.c TI DAVINCI MACHINE SUPPORT M: Sekhar Nori -M: Kevin Hilman +M: Kevin Hilman L: davinci-linux-open-source@linux.davincidsp.com (moderated for non-subscribers) T: git git://gitorious.org/linux-davinci/linux-davinci.git Q: http://patchwork.kernel.org/project/linux-davinci/list/ -- cgit v1.1 From 18e4321276fcf083b85b788fee7cf15be29ed72a Mon Sep 17 00:00:00 2001 From: Takahisa Tanaka Date: Sun, 3 Mar 2013 14:52:07 +0900 Subject: watchdog: sp5100_tco: Remove code that may cause a boot failure A problem was found on PC's with the SB700 chipset: The PC fails to load BIOS after running the 3.8.x kernel until the power is completely cut off. It occurs in all 3.8.x versions and the mainline version as of 2/4. The issue does not occur with the 3.7.x builds. There are two methods for accessing the watchdog registers. 1. Re-programming a resource address obtained by allocate_resource() to chipset. 2. Use the direct memory-mapped IO access. The method 1 can be used by all the chipsets (SP5100, SB7x0, SB8x0 or later). However, experience shows that only PC with the SB8x0 (or later) chipsets can use the method 2. This patch removes the method 1, because the critical problem was found. That's why the watchdog timer was able to be used on SP5100 and SB7x0 chipsets until now. Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1116835 Link: https://lkml.org/lkml/2013/2/14/271 Signed-off-by: Takahisa Tanaka Signed-off-by: Wim Van Sebroeck Cc: stable --- drivers/watchdog/sp5100_tco.c | 126 ++---------------------------------------- 1 file changed, 6 insertions(+), 120 deletions(-) diff --git a/drivers/watchdog/sp5100_tco.c b/drivers/watchdog/sp5100_tco.c index e3b8f75..0e9d8c4 100644 --- a/drivers/watchdog/sp5100_tco.c +++ b/drivers/watchdog/sp5100_tco.c @@ -40,13 +40,12 @@ #include "sp5100_tco.h" /* Module and version information */ -#define TCO_VERSION "0.03" +#define TCO_VERSION "0.05" #define TCO_MODULE_NAME "SP5100 TCO timer" #define TCO_DRIVER_NAME TCO_MODULE_NAME ", v" TCO_VERSION /* internal variables */ static u32 tcobase_phys; -static u32 resbase_phys; static u32 tco_wdt_fired; static void __iomem *tcobase; static unsigned int pm_iobase; @@ -54,10 +53,6 @@ static DEFINE_SPINLOCK(tco_lock); /* Guards the hardware */ static unsigned long timer_alive; static char tco_expect_close; static struct pci_dev *sp5100_tco_pci; -static struct resource wdt_res = { - .name = "Watchdog Timer", - .flags = IORESOURCE_MEM, -}; /* the watchdog platform device */ static struct platform_device *sp5100_tco_platform_device; @@ -75,12 +70,6 @@ module_param(nowayout, bool, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started." " (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); -static unsigned int force_addr; -module_param(force_addr, uint, 0); -MODULE_PARM_DESC(force_addr, "Force the use of specified MMIO address." - " ONLY USE THIS PARAMETER IF YOU REALLY KNOW" - " WHAT YOU ARE DOING (default=none)"); - /* * Some TCO specific functions */ @@ -176,39 +165,6 @@ static void tco_timer_enable(void) } } -static void tco_timer_disable(void) -{ - int val; - - if (sp5100_tco_pci->revision >= 0x40) { - /* For SB800 or later */ - /* Enable watchdog decode bit and Disable watchdog timer */ - outb(SB800_PM_WATCHDOG_CONTROL, SB800_IO_PM_INDEX_REG); - val = inb(SB800_IO_PM_DATA_REG); - val |= SB800_PCI_WATCHDOG_DECODE_EN; - val |= SB800_PM_WATCHDOG_DISABLE; - outb(val, SB800_IO_PM_DATA_REG); - } else { - /* For SP5100 or SB7x0 */ - /* Enable watchdog decode bit */ - pci_read_config_dword(sp5100_tco_pci, - SP5100_PCI_WATCHDOG_MISC_REG, - &val); - - val |= SP5100_PCI_WATCHDOG_DECODE_EN; - - pci_write_config_dword(sp5100_tco_pci, - SP5100_PCI_WATCHDOG_MISC_REG, - val); - - /* Disable Watchdog timer */ - outb(SP5100_PM_WATCHDOG_CONTROL, SP5100_IO_PM_INDEX_REG); - val = inb(SP5100_IO_PM_DATA_REG); - val |= SP5100_PM_WATCHDOG_DISABLE; - outb(val, SP5100_IO_PM_DATA_REG); - } -} - /* * /dev/watchdog handling */ @@ -361,7 +317,7 @@ static unsigned char sp5100_tco_setupdevice(void) { struct pci_dev *dev = NULL; const char *dev_name = NULL; - u32 val, tmp_val; + u32 val; u32 index_reg, data_reg, base_addr; /* Match the PCI device */ @@ -459,63 +415,8 @@ static unsigned char sp5100_tco_setupdevice(void) } else pr_debug("SBResource_MMIO is disabled(0x%04x)\n", val); - /* - * Lastly re-programming the watchdog timer MMIO address, - * This method is a last resort... - * - * Before re-programming, to ensure that the watchdog timer - * is disabled, disable the watchdog timer. - */ - tco_timer_disable(); - - if (force_addr) { - /* - * Force the use of watchdog timer MMIO address, and aligned to - * 8byte boundary. - */ - force_addr &= ~0x7; - val = force_addr; - - pr_info("Force the use of 0x%04x as MMIO address\n", val); - } else { - /* - * Get empty slot into the resource tree for watchdog timer. - */ - if (allocate_resource(&iomem_resource, - &wdt_res, - SP5100_WDT_MEM_MAP_SIZE, - 0xf0000000, - 0xfffffff8, - 0x8, - NULL, - NULL)) { - pr_err("MMIO allocation failed\n"); - goto unreg_region; - } - - val = resbase_phys = wdt_res.start; - pr_debug("Got 0x%04x from resource tree\n", val); - } - - /* Restore to the low three bits */ - outb(base_addr+0, index_reg); - tmp_val = val | (inb(data_reg) & 0x7); - - /* Re-programming the watchdog timer base address */ - outb(base_addr+0, index_reg); - outb((tmp_val >> 0) & 0xff, data_reg); - outb(base_addr+1, index_reg); - outb((tmp_val >> 8) & 0xff, data_reg); - outb(base_addr+2, index_reg); - outb((tmp_val >> 16) & 0xff, data_reg); - outb(base_addr+3, index_reg); - outb((tmp_val >> 24) & 0xff, data_reg); - - if (!request_mem_region_exclusive(val, SP5100_WDT_MEM_MAP_SIZE, - dev_name)) { - pr_err("MMIO address 0x%04x already in use\n", val); - goto unreg_resource; - } + pr_notice("failed to find MMIO address, giving up.\n"); + goto unreg_region; setup_wdt: tcobase_phys = val; @@ -555,9 +456,6 @@ setup_wdt: unreg_mem_region: release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE); -unreg_resource: - if (resbase_phys) - release_resource(&wdt_res); unreg_region: release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE); exit: @@ -567,7 +465,6 @@ exit: static int sp5100_tco_init(struct platform_device *dev) { int ret; - char addr_str[16]; /* * Check whether or not the hardware watchdog is there. If found, then @@ -599,23 +496,14 @@ static int sp5100_tco_init(struct platform_device *dev) clear_bit(0, &timer_alive); /* Show module parameters */ - if (force_addr == tcobase_phys) - /* The force_addr is vaild */ - sprintf(addr_str, "0x%04x", force_addr); - else - strcpy(addr_str, "none"); - - pr_info("initialized (0x%p). heartbeat=%d sec (nowayout=%d, " - "force_addr=%s)\n", - tcobase, heartbeat, nowayout, addr_str); + pr_info("initialized (0x%p). heartbeat=%d sec (nowayout=%d)\n", + tcobase, heartbeat, nowayout); return 0; exit: iounmap(tcobase); release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE); - if (resbase_phys) - release_resource(&wdt_res); release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE); return ret; } @@ -630,8 +518,6 @@ static void sp5100_tco_cleanup(void) misc_deregister(&sp5100_tco_miscdev); iounmap(tcobase); release_mem_region(tcobase_phys, SP5100_WDT_MEM_MAP_SIZE); - if (resbase_phys) - release_resource(&wdt_res); release_region(pm_iobase, SP5100_PM_IOPORTS_SIZE); } -- cgit v1.1 From 81fc933f176cd95f757bfc8a98109ef422598b79 Mon Sep 17 00:00:00 2001 From: Takahisa Tanaka Date: Sun, 3 Mar 2013 14:48:00 +0900 Subject: watchdog: sp5100_tco: Set the AcpiMmioSel bitmask value to 1 instead of 2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The AcpiMmioSel bit is bit 1 in the AcpiMmioEn register, but the current sp5100_tco driver is using bit 2. See 2.3.3 Power Management (PM) Registers page 150 of the AMD SB800-Series Southbridges Register Reference Guide [1]. AcpiMmioEn - RW – 8/16/32 bits - [PM_Reg: 24h] Field Name Bits Default Description AcpiMMioDecodeEn 0 0b Set to 1 to enable AcpiMMio space. AcpiMMIoSel 1 0b Set AcpiMMio registers to be memory-mapped or IO-mapped space. 0: Memory-mapped space 1: I/O-mapped space The sp5100_tco driver expects zero as a value of AcpiMmioSel (bit 1). Fortunately, no problems were caused by this typo, because the default value of the undocumented misused bit 2 seems to be zero. However, the sp5100_tco driver should use the correct bitmask value. [1] http://support.amd.com/us/Embedded_TechDocs/45482.pdf Signed-off-by: Takahisa Tanaka Signed-off-by: Paul Menzel Signed-off-by: Wim Van Sebroeck Cc: stable --- drivers/watchdog/sp5100_tco.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/sp5100_tco.h b/drivers/watchdog/sp5100_tco.h index 71594a0..2b28c00 100644 --- a/drivers/watchdog/sp5100_tco.h +++ b/drivers/watchdog/sp5100_tco.h @@ -57,7 +57,7 @@ #define SB800_PM_WATCHDOG_DISABLE (1 << 2) #define SB800_PM_WATCHDOG_SECOND_RES (3 << 0) #define SB800_ACPI_MMIO_DECODE_EN (1 << 0) -#define SB800_ACPI_MMIO_SEL (1 << 2) +#define SB800_ACPI_MMIO_SEL (1 << 1) #define SB800_PM_WDT_MMIO_OFFSET 0xB00 -- cgit v1.1 From fe8d52614bd419cedef85ef55850fd090373f481 Mon Sep 17 00:00:00 2001 From: James Hogan Date: Fri, 22 Mar 2013 15:04:37 -0700 Subject: irq_work.h: fix warning when CONFIG_IRQ_WORK=n A randconfig caught repeated compiler warnings when CONFIG_IRQ_WORK=n due to the definition of a non-inline static function in : include/linux/irq_work.h +40 : warning: 'irq_work_needs_cpu' defined but not used Make it inline to supress the warning. This is caused commit 00b42959106a ("irq_work: Don't stop the tick with pending works") merged in v3.9-rc1. Signed-off-by: James Hogan Signed-off-by: Frederic Weisbecker Cc: Steven Rostedt Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Paul Gortmaker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/irq_work.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h index f5dbce5..6601702 100644 --- a/include/linux/irq_work.h +++ b/include/linux/irq_work.h @@ -37,7 +37,7 @@ void irq_work_sync(struct irq_work *work); #ifdef CONFIG_IRQ_WORK bool irq_work_needs_cpu(void); #else -static bool irq_work_needs_cpu(void) { return false; } +static inline bool irq_work_needs_cpu(void) { return false; } #endif #endif /* _LINUX_IRQ_WORK_H */ -- cgit v1.1 From dc72c32e1fd872a9a4fdfe645283c9dcd68e556d Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Fri, 22 Mar 2013 15:04:39 -0700 Subject: printk: Provide a wake_up_klogd() off-case wake_up_klogd() is useless when CONFIG_PRINTK=n because neither printk() nor printk_sched() are in use and there are actually no waiter on log_wait waitqueue. It should be a stub in this case for users like bust_spinlocks(). Otherwise this results in this warning when CONFIG_PRINTK=n and CONFIG_IRQ_WORK=n: kernel/built-in.o In function `wake_up_klogd': (.text.wake_up_klogd+0xb4): undefined reference to `irq_work_queue' To fix this, provide an off-case for wake_up_klogd() when CONFIG_PRINTK=n. There is much more from console_unlock() and other console related code in printk.c that should be moved under CONFIG_PRINTK. But for now, focus on a minimal fix as we passed the merged window already. [akpm@linux-foundation.org: include printk.h in bust_spinlocks.c] Signed-off-by: Frederic Weisbecker Reported-by: James Hogan Cc: James Hogan Cc: Steven Rostedt Cc: Peter Zijlstra Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kernel.h | 1 - include/linux/printk.h | 6 ++++ kernel/printk.c | 80 ++++++++++++++++++++++++-------------------------- lib/bust_spinlocks.c | 3 +- 4 files changed, 46 insertions(+), 44 deletions(-) diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 80d3687..79fdd80 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -390,7 +390,6 @@ extern struct pid *session_of_pgrp(struct pid *pgrp); unsigned long int_sqrt(unsigned long); extern void bust_spinlocks(int yes); -extern void wake_up_klogd(void); extern int oops_in_progress; /* If set, an oops, panic(), BUG() or die() is in progress */ extern int panic_timeout; extern int panic_on_oops; diff --git a/include/linux/printk.h b/include/linux/printk.h index 1249a54..822171f 100644 --- a/include/linux/printk.h +++ b/include/linux/printk.h @@ -134,6 +134,8 @@ extern int printk_delay_msec; extern int dmesg_restrict; extern int kptr_restrict; +extern void wake_up_klogd(void); + void log_buf_kexec_setup(void); void __init setup_log_buf(int early); #else @@ -162,6 +164,10 @@ static inline bool printk_timed_ratelimit(unsigned long *caller_jiffies, return false; } +static inline void wake_up_klogd(void) +{ +} + static inline void log_buf_kexec_setup(void) { } diff --git a/kernel/printk.c b/kernel/printk.c index 0b31715..abbdd9e 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -63,8 +63,6 @@ void asmlinkage __attribute__((weak)) early_printk(const char *fmt, ...) #define MINIMUM_CONSOLE_LOGLEVEL 1 /* Minimum loglevel we let people use */ #define DEFAULT_CONSOLE_LOGLEVEL 7 /* anything MORE serious than KERN_DEBUG */ -DECLARE_WAIT_QUEUE_HEAD(log_wait); - int console_printk[4] = { DEFAULT_CONSOLE_LOGLEVEL, /* console_loglevel */ DEFAULT_MESSAGE_LOGLEVEL, /* default_message_loglevel */ @@ -224,6 +222,7 @@ struct log { static DEFINE_RAW_SPINLOCK(logbuf_lock); #ifdef CONFIG_PRINTK +DECLARE_WAIT_QUEUE_HEAD(log_wait); /* the next printk record to read by syslog(READ) or /proc/kmsg */ static u64 syslog_seq; static u32 syslog_idx; @@ -1957,45 +1956,6 @@ int is_console_locked(void) return console_locked; } -/* - * Delayed printk version, for scheduler-internal messages: - */ -#define PRINTK_BUF_SIZE 512 - -#define PRINTK_PENDING_WAKEUP 0x01 -#define PRINTK_PENDING_SCHED 0x02 - -static DEFINE_PER_CPU(int, printk_pending); -static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf); - -static void wake_up_klogd_work_func(struct irq_work *irq_work) -{ - int pending = __this_cpu_xchg(printk_pending, 0); - - if (pending & PRINTK_PENDING_SCHED) { - char *buf = __get_cpu_var(printk_sched_buf); - printk(KERN_WARNING "[sched_delayed] %s", buf); - } - - if (pending & PRINTK_PENDING_WAKEUP) - wake_up_interruptible(&log_wait); -} - -static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = { - .func = wake_up_klogd_work_func, - .flags = IRQ_WORK_LAZY, -}; - -void wake_up_klogd(void) -{ - preempt_disable(); - if (waitqueue_active(&log_wait)) { - this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP); - irq_work_queue(&__get_cpu_var(wake_up_klogd_work)); - } - preempt_enable(); -} - static void console_cont_flush(char *text, size_t size) { unsigned long flags; @@ -2458,6 +2418,44 @@ static int __init printk_late_init(void) late_initcall(printk_late_init); #if defined CONFIG_PRINTK +/* + * Delayed printk version, for scheduler-internal messages: + */ +#define PRINTK_BUF_SIZE 512 + +#define PRINTK_PENDING_WAKEUP 0x01 +#define PRINTK_PENDING_SCHED 0x02 + +static DEFINE_PER_CPU(int, printk_pending); +static DEFINE_PER_CPU(char [PRINTK_BUF_SIZE], printk_sched_buf); + +static void wake_up_klogd_work_func(struct irq_work *irq_work) +{ + int pending = __this_cpu_xchg(printk_pending, 0); + + if (pending & PRINTK_PENDING_SCHED) { + char *buf = __get_cpu_var(printk_sched_buf); + printk(KERN_WARNING "[sched_delayed] %s", buf); + } + + if (pending & PRINTK_PENDING_WAKEUP) + wake_up_interruptible(&log_wait); +} + +static DEFINE_PER_CPU(struct irq_work, wake_up_klogd_work) = { + .func = wake_up_klogd_work_func, + .flags = IRQ_WORK_LAZY, +}; + +void wake_up_klogd(void) +{ + preempt_disable(); + if (waitqueue_active(&log_wait)) { + this_cpu_or(printk_pending, PRINTK_PENDING_WAKEUP); + irq_work_queue(&__get_cpu_var(wake_up_klogd_work)); + } + preempt_enable(); +} int printk_sched(const char *fmt, ...) { diff --git a/lib/bust_spinlocks.c b/lib/bust_spinlocks.c index 9681d54..f8e0e53 100644 --- a/lib/bust_spinlocks.c +++ b/lib/bust_spinlocks.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -28,5 +29,3 @@ void __attribute__((weak)) bust_spinlocks(int yes) wake_up_klogd(); } } - - -- cgit v1.1 From d00285884c0892bb1310df96bce6056e9ce9b9d9 Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Fri, 22 Mar 2013 15:04:40 -0700 Subject: mm/hugetlb: fix total hugetlbfs pages count when using memory overcommit accouting hugetlb_total_pages is used for overcommit calculations but the current implementation considers only the default hugetlb page size (which is either the first defined hugepage size or the one specified by default_hugepagesz kernel boot parameter). If the system is configured for more than one hugepage size, which is possible since commit a137e1cc6d6e ("hugetlbfs: per mount huge page sizes") then the overcommit estimation done by __vm_enough_memory() (resp. shown by meminfo_proc_show) is not precise - there is an impression of more available/allowed memory. This can lead to an unexpected ENOMEM/EFAULT resp. SIGSEGV when memory is accounted. Testcase: boot: hugepagesz=1G hugepages=1 the default overcommit ratio is 50 before patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 55434168 kB after patch: egrep 'CommitLimit' /proc/meminfo CommitLimit: 54909880 kB [akpm@linux-foundation.org: coding-style tweak] Signed-off-by: Wanpeng Li Acked-by: Michal Hocko Cc: "Aneesh Kumar K.V" Cc: Hillf Danton Cc: KAMEZAWA Hiroyuki Cc: [3.0+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hugetlb.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 0a0be33..ca9a7c6 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2124,8 +2124,12 @@ int hugetlb_report_node_meminfo(int nid, char *buf) /* Return the number pages of memory we physically have, in PAGE_SIZE units. */ unsigned long hugetlb_total_pages(void) { - struct hstate *h = &default_hstate; - return h->nr_huge_pages * pages_per_huge_page(h); + struct hstate *h; + unsigned long nr_total_pages = 0; + + for_each_hstate(h) + nr_total_pages += h->nr_huge_pages * pages_per_huge_page(h); + return nr_total_pages; } static int hugetlb_acct_memory(struct hstate *h, long delta) -- cgit v1.1 From 2ca067efd82939dfd87827d29d36a265823a4c2f Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Fri, 22 Mar 2013 15:04:41 -0700 Subject: poweroff: change orderly_poweroff() to use schedule_work() David said: Commit 6c0c0d4d1080 ("poweroff: fix bug in orderly_poweroff()") apparently fixes one bug in orderly_poweroff(), but introduces another. The comments on orderly_poweroff() claim it can be called from any context - and indeed we call it from interrupt context in arch/powerpc/platforms/pseries/ras.c for example. But since that commit this is no longer safe, since call_usermodehelper_fns() is not safe in interrupt context without the UMH_NO_WAIT option. orderly_poweroff() can be used from any context but UMH_WAIT_EXEC is sleepable. Move the "force" logic into __orderly_poweroff() and change orderly_poweroff() to use the global poweroff_work which simply calls __orderly_poweroff(). While at it, remove the unneeded "int argc" and change argv_split() to use GFP_KERNEL. We use the global "bool poweroff_force" to pass the argument, this can obviously affect the previous request if it is pending/running. So we only allow the "false => true" transition assuming that the pending "true" should succeed anyway. If schedule_work() fails after that we know that work->func() was not called yet, it must see the new value. This means that orderly_poweroff() becomes async even if we do not run the command and always succeeds, schedule_work() can only fail if the work is already pending. We can export __orderly_poweroff() and change the non-atomic callers which want the old semantics. Signed-off-by: Oleg Nesterov Reported-by: Benjamin Herrenschmidt Reported-by: David Gibson Cc: Lucas De Marchi Cc: Feng Hong Cc: Kees Cook Cc: Serge Hallyn Cc: "Eric W. Biederman" Cc: "Rafael J. Wysocki" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sys.c | 57 ++++++++++++++++++++++++++++++++------------------------- 1 file changed, 32 insertions(+), 25 deletions(-) diff --git a/kernel/sys.c b/kernel/sys.c index 81f5644..39c9c4a 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -2185,9 +2185,8 @@ SYSCALL_DEFINE3(getcpu, unsigned __user *, cpup, unsigned __user *, nodep, char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff"; -static int __orderly_poweroff(void) +static int __orderly_poweroff(bool force) { - int argc; char **argv; static char *envp[] = { "HOME=/", @@ -2196,20 +2195,40 @@ static int __orderly_poweroff(void) }; int ret; - argv = argv_split(GFP_ATOMIC, poweroff_cmd, &argc); - if (argv == NULL) { + argv = argv_split(GFP_KERNEL, poweroff_cmd, NULL); + if (argv) { + ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC); + argv_free(argv); + } else { printk(KERN_WARNING "%s failed to allocate memory for \"%s\"\n", - __func__, poweroff_cmd); - return -ENOMEM; + __func__, poweroff_cmd); + ret = -ENOMEM; } - ret = call_usermodehelper_fns(argv[0], argv, envp, UMH_WAIT_EXEC, - NULL, NULL, NULL); - argv_free(argv); + if (ret && force) { + printk(KERN_WARNING "Failed to start orderly shutdown: " + "forcing the issue\n"); + /* + * I guess this should try to kick off some daemon to sync and + * poweroff asap. Or not even bother syncing if we're doing an + * emergency shutdown? + */ + emergency_sync(); + kernel_power_off(); + } return ret; } +static bool poweroff_force; + +static void poweroff_work_func(struct work_struct *work) +{ + __orderly_poweroff(poweroff_force); +} + +static DECLARE_WORK(poweroff_work, poweroff_work_func); + /** * orderly_poweroff - Trigger an orderly system poweroff * @force: force poweroff if command execution fails @@ -2219,21 +2238,9 @@ static int __orderly_poweroff(void) */ int orderly_poweroff(bool force) { - int ret = __orderly_poweroff(); - - if (ret && force) { - printk(KERN_WARNING "Failed to start orderly shutdown: " - "forcing the issue\n"); - - /* - * I guess this should try to kick off some daemon to sync and - * poweroff asap. Or not even bother syncing if we're doing an - * emergency shutdown? - */ - emergency_sync(); - kernel_power_off(); - } - - return ret; + if (force) /* do not override the pending "true" */ + poweroff_force = true; + schedule_work(&poweroff_work); + return 0; } EXPORT_SYMBOL_GPL(orderly_poweroff); -- cgit v1.1 From f9228b204f789493117e458d2fefae937edb7272 Mon Sep 17 00:00:00 2001 From: Russ Anderson Date: Fri, 22 Mar 2013 15:04:43 -0700 Subject: mm: zone_end_pfn is too small Booting with 32 TBytes memory hits BUG at mm/page_alloc.c:552! (output below). The key hint is "page 4294967296 outside zone". 4294967296 = 0x100000000 (bit 32 is set). The problem is in include/linux/mmzone.h: 530 static inline unsigned zone_end_pfn(const struct zone *zone) 531 { 532 return zone->zone_start_pfn + zone->spanned_pages; 533 } zone_end_pfn is "unsigned" (32 bits). Changing it to "unsigned long" (64 bits) fixes the problem. zone_end_pfn() was added recently in commit 108bcc96ef70 ("mm: add & use zone_end_pfn() and zone_spans_pfn()") Output from the failure. No AGP bridge found page 4294967296 outside zone [ 4294967296 - 4327469056 ] ------------[ cut here ]------------ kernel BUG at mm/page_alloc.c:552! invalid opcode: 0000 [#1] SMP Modules linked in: CPU 0 Pid: 0, comm: swapper Not tainted 3.9.0-rc2.dtp+ #10 RIP: free_one_page+0x382/0x430 Process swapper (pid: 0, threadinfo ffffffff81942000, task ffffffff81955420) Call Trace: __free_pages_ok+0x96/0xb0 __free_pages+0x25/0x50 __free_pages_bootmem+0x8a/0x8c __free_memory_core+0xea/0x131 free_low_memory_core_early+0x4a/0x98 free_all_bootmem+0x45/0x47 mem_init+0x7b/0x14c start_kernel+0x216/0x433 x86_64_start_reservations+0x2a/0x2c x86_64_start_kernel+0x144/0x153 Code: 89 f1 ba 01 00 00 00 31 f6 d3 e2 4c 89 ef e8 66 a4 01 00 e9 2c fe ff ff 0f 0b eb fe 0f 0b 66 66 2e 0f 1f 84 00 00 00 00 00 eb f3 <0f> 0b eb fe 0f 0b 0f 1f 84 00 00 00 00 00 eb f6 0f 0b eb fe 49 Signed-off-by: Russ Anderson Reported-by: George Beshers Acked-by: Hedi Berriche Cc: Cody P Schafer Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/mmzone.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index ede2749..c74092e 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -527,7 +527,7 @@ static inline int zone_is_oom_locked(const struct zone *zone) return test_bit(ZONE_OOM_LOCKED, &zone->flags); } -static inline unsigned zone_end_pfn(const struct zone *zone) +static inline unsigned long zone_end_pfn(const struct zone *zone) { return zone->zone_start_pfn + zone->spanned_pages; } -- cgit v1.1 From 925e8ea6bca2c9a590565634b27768d7042e089f Mon Sep 17 00:00:00 2001 From: Ashish Jangam Date: Fri, 22 Mar 2013 15:04:44 -0700 Subject: drivers/rtc/rtc-da9052.c: fix for rtc device registration Add support for the virtual irq since now MFD only handles virtual irq Without this patch rtc device will fail in registration. (akpm: Ashish has a different version whcih will be needed for 3.8.x and earlier kernels) Signed-off-by: Ashish Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-da9052.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/rtc/rtc-da9052.c b/drivers/rtc/rtc-da9052.c index 0dde688..969abba 100644 --- a/drivers/rtc/rtc-da9052.c +++ b/drivers/rtc/rtc-da9052.c @@ -239,11 +239,9 @@ static int da9052_rtc_probe(struct platform_device *pdev) rtc->da9052 = dev_get_drvdata(pdev->dev.parent); platform_set_drvdata(pdev, rtc); - rtc->irq = platform_get_irq_byname(pdev, "ALM"); - ret = devm_request_threaded_irq(&pdev->dev, rtc->irq, NULL, - da9052_rtc_irq, - IRQF_TRIGGER_LOW | IRQF_ONESHOT, - "ALM", rtc); + rtc->irq = DA9052_IRQ_ALARM; + ret = da9052_request_irq(rtc->da9052, rtc->irq, "ALM", + da9052_rtc_irq, rtc); if (ret != 0) { rtc_err(rtc->da9052, "irq registration failed: %d\n", ret); return ret; -- cgit v1.1 From e66b05873a7a76afc569da6382509471cba8d5ff Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Fri, 22 Mar 2013 15:04:45 -0700 Subject: drivers/video/ep93xx-fb.c: include for devm_ioremap() Commit be8678149701 ("drivers/video/ep93xx-fb.c: use devm_ functions") introduced a build error: drivers/video/ep93xx-fb.c: In function 'ep93xxfb_probe': drivers/video/ep93xx-fb.c:532: error: implicit declaration of function 'devm_ioremap' drivers/video/ep93xx-fb.c:533: warning: assignment makes pointer from integer without a cast Include to pickup the declaration of 'devm_ioremap'. Signed-off-by: H Hartley Sweeten Cc: Florian Tobias Schandinat Acked-by: Ryan Mallon Cc: Damien Cassou Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/ep93xx-fb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/ep93xx-fb.c b/drivers/video/ep93xx-fb.c index 3f2519d..e06cd5d 100644 --- a/drivers/video/ep93xx-fb.c +++ b/drivers/video/ep93xx-fb.c @@ -23,6 +23,7 @@ #include #include #include +#include #include -- cgit v1.1 From 0ef1594c017521ea89278e80fe3f80dafb17abde Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Fri, 22 Mar 2013 15:04:47 -0700 Subject: drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR On some revisions of AT91 SoCs, the RTC IMR register is not working. Instead of elaborating a workaround for that specific SoC or IP version, we simply use a software variable to store the Interrupt Mask Register and modify it for each enabling/disabling of an interrupt. The overhead of this is negligible anyway. The interrupt mask register (IMR) for the RTC is broken on the AT91SAM9x5 sub-family of SoCs (good overview of the members here: http://www.eewiki.net/display/linuxonarm/AT91SAM9x5 ). The "user visible effect" is the RTC doesn't work. That sub-family is less than two years old and only has devicetree (DT) support and came online circa lk 3.7 . The dust is yet to settle on the DT stuff at least for AT91 SoCs (translation: lots of stuff is still broken, so much that it is hard to know where to start). The fix in the patch is pretty simple: just shadow the silicon IMR register with a variable in the driver. Some older SoCs (pre-DT) use the the rtc-at91rm9200 driver (e.g. obviously the AT91RM9200) and they should not be impacted by the change. There shouldn't be a large volume of interrupts associated with a RTC. Signed-off-by: Nicolas Ferre Reported-by: Douglas Gilbert Cc: Jean-Christophe PLAGNIOL-VILLARD Cc: Ludovic Desroches Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-at91rm9200.c | 50 +++++++++++++++++++++++++++----------------- drivers/rtc/rtc-at91rm9200.h | 1 - 2 files changed, 31 insertions(+), 20 deletions(-) diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 434ebc3..0a9f27e 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -44,6 +44,7 @@ static DECLARE_COMPLETION(at91_rtc_updated); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; static int irq; +static u32 at91_rtc_imr; /* * Decode time/date into rtc_time structure @@ -108,9 +109,11 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) cr = at91_rtc_read(AT91_RTC_CR); at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM); + at91_rtc_imr |= AT91_RTC_ACKUPD; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD); wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD); + at91_rtc_imr &= ~AT91_RTC_ACKUPD; at91_rtc_write(AT91_RTC_TIMR, bin2bcd(tm->tm_sec) << 0 @@ -142,7 +145,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year); tm->tm_year = at91_alarm_year - 1900; - alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM) + alrm->enabled = (at91_rtc_imr & AT91_RTC_ALARM) ? 1 : 0; dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__, @@ -168,6 +171,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) tm.tm_sec = alrm->time.tm_sec; at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); + at91_rtc_imr &= ~AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_TIMALR, bin2bcd(tm.tm_sec) << 0 | bin2bcd(tm.tm_min) << 8 @@ -180,6 +184,7 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) if (alrm->enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); + at91_rtc_imr |= AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); } @@ -196,9 +201,12 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) if (enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); + at91_rtc_imr |= AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); - } else + } else { at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); + at91_rtc_imr &= ~AT91_RTC_ALARM; + } return 0; } @@ -207,12 +215,10 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) */ static int at91_rtc_proc(struct device *dev, struct seq_file *seq) { - unsigned long imr = at91_rtc_read(AT91_RTC_IMR); - seq_printf(seq, "update_IRQ\t: %s\n", - (imr & AT91_RTC_ACKUPD) ? "yes" : "no"); + (at91_rtc_imr & AT91_RTC_ACKUPD) ? "yes" : "no"); seq_printf(seq, "periodic_IRQ\t: %s\n", - (imr & AT91_RTC_SECEV) ? "yes" : "no"); + (at91_rtc_imr & AT91_RTC_SECEV) ? "yes" : "no"); return 0; } @@ -227,7 +233,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) unsigned int rtsr; unsigned long events = 0; - rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR); + rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_imr; if (rtsr) { /* this interrupt is shared! Is it ours? */ if (rtsr & AT91_RTC_ALARM) events |= (RTC_AF | RTC_IRQF); @@ -291,6 +297,7 @@ static int __init at91_rtc_probe(struct platform_device *pdev) at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); + at91_rtc_imr = 0; ret = request_irq(irq, at91_rtc_interrupt, IRQF_SHARED, @@ -329,6 +336,7 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); + at91_rtc_imr = 0; free_irq(irq, pdev); rtc_device_unregister(rtc); @@ -341,31 +349,35 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) /* AT91RM9200 RTC Power management control */ -static u32 at91_rtc_imr; +static u32 at91_rtc_bkpimr; + static int at91_rtc_suspend(struct device *dev) { /* this IRQ is shared with DBGU and other hardware which isn't * necessarily doing PM like we are... */ - at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR) - & (AT91_RTC_ALARM|AT91_RTC_SECEV); - if (at91_rtc_imr) { - if (device_may_wakeup(dev)) + at91_rtc_bkpimr = at91_rtc_imr & (AT91_RTC_ALARM|AT91_RTC_SECEV); + if (at91_rtc_bkpimr) { + if (device_may_wakeup(dev)) { enable_irq_wake(irq); - else - at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr); - } + } else { + at91_rtc_write(AT91_RTC_IDR, at91_rtc_bkpimr); + at91_rtc_imr &= ~at91_rtc_bkpimr; + } +} return 0; } static int at91_rtc_resume(struct device *dev) { - if (at91_rtc_imr) { - if (device_may_wakeup(dev)) + if (at91_rtc_bkpimr) { + if (device_may_wakeup(dev)) { disable_irq_wake(irq); - else - at91_rtc_write(AT91_RTC_IER, at91_rtc_imr); + } else { + at91_rtc_imr |= at91_rtc_bkpimr; + at91_rtc_write(AT91_RTC_IER, at91_rtc_bkpimr); + } } return 0; } diff --git a/drivers/rtc/rtc-at91rm9200.h b/drivers/rtc/rtc-at91rm9200.h index da1945e..5f940b6 100644 --- a/drivers/rtc/rtc-at91rm9200.h +++ b/drivers/rtc/rtc-at91rm9200.h @@ -64,7 +64,6 @@ #define AT91_RTC_SCCR 0x1c /* Status Clear Command Register */ #define AT91_RTC_IER 0x20 /* Interrupt Enable Register */ #define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ -#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ #define AT91_RTC_VER 0x2c /* Valid Entry Register */ #define AT91_RTC_NVTIM (1 << 0) /* Non valid Time */ -- cgit v1.1 From 8d640a51ec9e9cdefa680b67ad55f933eefc5923 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Fri, 22 Mar 2013 15:04:48 -0700 Subject: dma-debug: fix locking bug in check_unmap() In check_unmap() it is possible to get into a dead-locked state if dma_mapping_error is called. The problem is that the bucket is locked in check_unmap, and locked again by debug_dma_mapping_error which is called by dma_mapping_error. To resolve that we must release the lock on the bucket before making the call to dma_mapping_error. [akpm@linux-foundation.org: restore 80-col trickery to be consistent with the rest of the file] Signed-off-by: Alexander Duyck Cc: Joerg Roedel Reviewed-by: Shuah Khan Tested-by: Shuah Khan Cc: Jakub Kicinski Cc: Konrad Rzeszutek Wilk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/dma-debug.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 5e396ac..d3e06a5 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -862,17 +862,21 @@ static void check_unmap(struct dma_debug_entry *ref) entry = bucket_find_exact(bucket, ref); if (!entry) { + /* must drop lock before calling dma_mapping_error */ + put_hash_bucket(bucket, &flags); + if (dma_mapping_error(ref->dev, ref->dev_addr)) { err_printk(ref->dev, NULL, - "DMA-API: device driver tries " - "to free an invalid DMA memory address\n"); - return; + "DMA-API: device driver tries to free an " + "invalid DMA memory address\n"); + } else { + err_printk(ref->dev, NULL, + "DMA-API: device driver tries to free DMA " + "memory it has not allocated [device " + "address=0x%016llx] [size=%llu bytes]\n", + ref->dev_addr, ref->size); } - err_printk(ref->dev, NULL, "DMA-API: device driver tries " - "to free DMA memory it has not allocated " - "[device address=0x%016llx] [size=%llu bytes]\n", - ref->dev_addr, ref->size); - goto out; + return; } if (ref->size != entry->size) { @@ -936,7 +940,6 @@ static void check_unmap(struct dma_debug_entry *ref) hash_bucket_del(entry); dma_entry_free(entry); -out: put_hash_bucket(bucket, &flags); } -- cgit v1.1 From 96e7d7a1e0fc7780b4c1981c787e42473aa91a95 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Fri, 22 Mar 2013 15:04:49 -0700 Subject: dma-debug: update DMA debug API to better handle multiple mappings of a buffer There were reports of the igb driver unmapping buffers without calling dma_mapping_error. On closer inspection issues were found in the DMA debug API and how it handled multiple mappings of the same buffer. The issue I found is the fact that the debug_dma_mapping_error would only set the map_err_type to MAP_ERR_CHECKED in the case that the was only one match for device and device address. However in the case of non-IOMMU, multiple addresses existed and as a result it was not setting this field once a second mapping was instantiated. I have resolved this by changing the search so that it instead will now set MAP_ERR_CHECKED on the first buffer that matches the device and DMA address that is currently in the state MAP_ERR_NOT_CHECKED. A secondary side effect of this patch is that in the case of multiple buffers using the same address only the last mapping will have a valid map_err_type. The previous mappings will all end up with map_err_type set to MAP_ERR_CHECKED because of the dma_mapping_error call in debug_dma_map_page. However this behavior may be preferable as it means you will likely only see one real error per multi-mapped buffer, versus the current behavior of multiple false errors mer multi-mapped buffer. Signed-off-by: Alexander Duyck Cc: Joerg Roedel Reviewed-by: Shuah Khan Tested-by: Shuah Khan Cc: Jakub Kicinski Cc: Konrad Rzeszutek Wilk Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- lib/dma-debug.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/lib/dma-debug.c b/lib/dma-debug.c index d3e06a5..d87a17a 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -1085,13 +1085,27 @@ void debug_dma_mapping_error(struct device *dev, dma_addr_t dma_addr) ref.dev = dev; ref.dev_addr = dma_addr; bucket = get_hash_bucket(&ref, &flags); - entry = bucket_find_exact(bucket, &ref); - if (!entry) - goto out; + list_for_each_entry(entry, &bucket->list, list) { + if (!exact_match(&ref, entry)) + continue; + + /* + * The same physical address can be mapped multiple + * times. Without a hardware IOMMU this results in the + * same device addresses being put into the dma-debug + * hash multiple times too. This can result in false + * positives being reported. Therefore we implement a + * best-fit algorithm here which updates the first entry + * from the hash which fits the reference value and is + * not currently listed as being checked. + */ + if (entry->map_err_type == MAP_ERR_NOT_CHECKED) { + entry->map_err_type = MAP_ERR_CHECKED; + break; + } + } - entry->map_err_type = MAP_ERR_CHECKED; -out: put_hash_bucket(bucket, &flags); } EXPORT_SYMBOL(debug_dma_mapping_error); -- cgit v1.1 From ca4b3f302c90de5e516296e581c31c80125cd24b Mon Sep 17 00:00:00 2001 From: Jianguo Wu Date: Fri, 22 Mar 2013 15:04:50 -0700 Subject: mm/hotplug: only free wait_table if it's allocated by vmalloc zone->wait_table may be allocated from bootmem, it can not be freed. Signed-off-by: Jianguo Wu Reviewed-by: Tang Chen Cc: Tang Chen Cc: Jiang Liu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memory_hotplug.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 9597eec..ee37657 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1779,7 +1779,11 @@ void try_offline_node(int nid) for (i = 0; i < MAX_NR_ZONES; i++) { struct zone *zone = pgdat->node_zones + i; - if (zone->wait_table) + /* + * wait_table may be allocated from boot memory, + * here only free if it's allocated by vmalloc. + */ + if (is_vmalloc_addr(zone->wait_table)) vfree(zone->wait_table); } -- cgit v1.1 From 38d78e587d4960d0db94add518d27ee74bad2301 Mon Sep 17 00:00:00 2001 From: Vladimir Davydov Date: Fri, 22 Mar 2013 15:04:51 -0700 Subject: mqueue: sys_mq_open: do not call mnt_drop_write() if read-only mnt_drop_write() must be called only if mnt_want_write() succeeded, otherwise the mnt_writers counter will diverge. mnt_writers counters are used to check if remounting FS as read-only is OK, so after an extra mnt_drop_write() call, it would be impossible to remount mqueue FS as read-only. Besides, on umount a warning would be printed like this one: ===================================== [ BUG: bad unlock balance detected! ] 3.9.0-rc3 #5 Not tainted ------------------------------------- a.out/12486 is trying to release lock (sb_writers) at: mnt_drop_write+0x1f/0x30 but there are no more locks to release! Signed-off-by: Vladimir Davydov Cc: Doug Ledford Cc: KOSAKI Motohiro Cc: "Eric W. Biederman" Cc: Al Viro Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- ipc/mqueue.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/ipc/mqueue.c b/ipc/mqueue.c index e5c4f60..3953fda 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -840,7 +840,8 @@ out_putfd: fd = error; } mutex_unlock(&root->d_inode->i_mutex); - mnt_drop_write(mnt); + if (!ro) + mnt_drop_write(mnt); out_putname: putname(name); return fd; -- cgit v1.1 From 55e57a780a10c9fd734603ec4b32644791ef5b05 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 15 Mar 2013 09:42:12 +0000 Subject: RDMA/cxgb4: Fix error return code in create_qp() Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Acked-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb4/qp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c index 17ba4f8..70b1808 100644 --- a/drivers/infiniband/hw/cxgb4/qp.c +++ b/drivers/infiniband/hw/cxgb4/qp.c @@ -186,8 +186,10 @@ static int create_qp(struct c4iw_rdev *rdev, struct t4_wq *wq, wq->rq.queue = dma_alloc_coherent(&(rdev->lldi.pdev->dev), wq->rq.memsize, &(wq->rq.dma_addr), GFP_KERNEL); - if (!wq->rq.queue) + if (!wq->rq.queue) { + ret = -ENOMEM; goto free_sq; + } PDBG("%s sq base va 0x%p pa 0x%llx rq base va 0x%p pa 0x%llx\n", __func__, wq->sq.queue, (unsigned long long)virt_to_phys(wq->sq.queue), -- cgit v1.1 From 1ee9e2aa7b31427303466776f455d43e5e3c9275 Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Tue, 26 Feb 2013 15:46:27 +0000 Subject: IPoIB: Fix send lockup due to missed TX completion Commit f0dc117abdfa ("IPoIB: Fix TX queue lockup with mixed UD/CM traffic") attempts to solve an issue where unprocessed UD send completions can deadlock the netdev. The patch doesn't fully resolve the issue because if more than half the tx_outstanding's were UD and all of the destinations are RC reachable, arming the CQ doesn't solve the issue. This patch uses the IB_CQ_REPORT_MISSED_EVENTS on the ib_req_notify_cq(). If the rc is above 0, the UD send cq completion callback is called directly to re-arm the send completion timer. This issue is seen in very large parallel filesystem deployments and the patch has been shown to correct the issue. Cc: Reviewed-by: Dean Luick Signed-off-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- drivers/infiniband/ulp/ipoib/ipoib_cm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c index 67b0c1d..1ef880d 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c @@ -758,9 +758,13 @@ void ipoib_cm_send(struct net_device *dev, struct sk_buff *skb, struct ipoib_cm_ if (++priv->tx_outstanding == ipoib_sendq_size) { ipoib_dbg(priv, "TX ring 0x%x full, stopping kernel net queue\n", tx->qp->qp_num); - if (ib_req_notify_cq(priv->send_cq, IB_CQ_NEXT_COMP)) - ipoib_warn(priv, "request notify on send CQ failed\n"); netif_stop_queue(dev); + rc = ib_req_notify_cq(priv->send_cq, + IB_CQ_NEXT_COMP | IB_CQ_REPORT_MISSED_EVENTS); + if (rc < 0) + ipoib_warn(priv, "request notify on send CQ failed\n"); + else if (rc) + ipoib_send_comp_handler(priv->send_cq, dev); } } } -- cgit v1.1 From 3c32869f7afe40ff7372e5bb7cd3d8b4520711bb Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 18 Mar 2013 20:25:26 +0000 Subject: IB/ipath: Silence a static checker warning I have a static checker which complains that 0x255 is too high for the "dev->opstats[opcode]" array. It turns out that the hardware has already validated the opcode at this point so it can't actually overflow. However, silencing the warning is good and this matches how the opcode is treated in qib_ib_rcv() as well. Signed-off-by: Dan Carpenter Acked-by: Mike Marciniszyn Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_verbs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/ipath/ipath_verbs.c b/drivers/infiniband/hw/ipath/ipath_verbs.c index 439c35d..ea93870 100644 --- a/drivers/infiniband/hw/ipath/ipath_verbs.c +++ b/drivers/infiniband/hw/ipath/ipath_verbs.c @@ -620,7 +620,7 @@ void ipath_ib_rcv(struct ipath_ibdev *dev, void *rhdr, void *data, goto bail; } - opcode = be32_to_cpu(ohdr->bth[0]) >> 24; + opcode = (be32_to_cpu(ohdr->bth[0]) >> 24) & 0x7f; dev->opstats[opcode].n_bytes += tlen; dev->opstats[opcode].n_packets++; -- cgit v1.1 From e2eed58b4fbfe7cd59d0c9d7bec48fcfa3b2117a Mon Sep 17 00:00:00 2001 From: Vinit Agnihotri Date: Thu, 14 Mar 2013 18:13:41 +0000 Subject: IB/qib: change QLogic to Intel These changes modify the qib driver as part of acquiring the InfiniBand assets of QLogic. Reviewed-by: Mike Marciniszyn Reviewed-by: Dean Luick Signed-off-by: Vinit Agnihotri Signed-off-by: Roland Dreier --- drivers/infiniband/hw/qib/Kconfig | 6 +- drivers/infiniband/hw/qib/qib_driver.c | 5 +- drivers/infiniband/hw/qib/qib_iba6120.c | 3 +- drivers/infiniband/hw/qib/qib_init.c | 8 +- drivers/infiniband/hw/qib/qib_sd7220.c | 4 +- drivers/infiniband/hw/qib/qib_verbs.c | 4 +- firmware/Makefile | 2 +- firmware/intel/sd7220.fw.ihex | 513 ++++++++++++++++++++++++++++++++ firmware/qlogic/sd7220.fw.ihex | 513 -------------------------------- 9 files changed, 530 insertions(+), 528 deletions(-) create mode 100644 firmware/intel/sd7220.fw.ihex delete mode 100644 firmware/qlogic/sd7220.fw.ihex diff --git a/drivers/infiniband/hw/qib/Kconfig b/drivers/infiniband/hw/qib/Kconfig index 8349f9c..1e603a3 100644 --- a/drivers/infiniband/hw/qib/Kconfig +++ b/drivers/infiniband/hw/qib/Kconfig @@ -1,7 +1,7 @@ config INFINIBAND_QIB - tristate "QLogic PCIe HCA support" + tristate "Intel PCIe HCA support" depends on 64BIT ---help--- - This is a low-level driver for QLogic PCIe QLE InfiniBand host - channel adapters. This driver does not support the QLogic + This is a low-level driver for Intel PCIe QLE InfiniBand host + channel adapters. This driver does not support the Intel HyperTransport card (model QHT7140). diff --git a/drivers/infiniband/hw/qib/qib_driver.c b/drivers/infiniband/hw/qib/qib_driver.c index 5423edc..2160924 100644 --- a/drivers/infiniband/hw/qib/qib_driver.c +++ b/drivers/infiniband/hw/qib/qib_driver.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006, 2007, 2008, 2009 QLogic Corporation. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * @@ -63,8 +64,8 @@ MODULE_PARM_DESC(compat_ddr_negotiate, "Attempt pre-IBTA 1.2 DDR speed negotiation"); MODULE_LICENSE("Dual BSD/GPL"); -MODULE_AUTHOR("QLogic "); -MODULE_DESCRIPTION("QLogic IB driver"); +MODULE_AUTHOR("Intel "); +MODULE_DESCRIPTION("Intel IB driver"); MODULE_VERSION(QIB_DRIVER_VERSION); /* diff --git a/drivers/infiniband/hw/qib/qib_iba6120.c b/drivers/infiniband/hw/qib/qib_iba6120.c index a099ac1..0232ae5 100644 --- a/drivers/infiniband/hw/qib/qib_iba6120.c +++ b/drivers/infiniband/hw/qib/qib_iba6120.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006, 2007, 2008, 2009, 2010 QLogic Corporation. * All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. @@ -51,7 +52,7 @@ static u32 qib_6120_iblink_state(u64); /* * This file contains all the chip-specific register information and - * access functions for the QLogic QLogic_IB PCI-Express chip. + * access functions for the Intel Intel_IB PCI-Express chip. * */ diff --git a/drivers/infiniband/hw/qib/qib_init.c b/drivers/infiniband/hw/qib/qib_init.c index 50e33aa0..173f805 100644 --- a/drivers/infiniband/hw/qib/qib_init.c +++ b/drivers/infiniband/hw/qib/qib_init.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * @@ -1138,7 +1138,7 @@ void qib_disable_after_error(struct qib_devdata *dd) static void qib_remove_one(struct pci_dev *); static int qib_init_one(struct pci_dev *, const struct pci_device_id *); -#define DRIVER_LOAD_MSG "QLogic " QIB_DRV_NAME " loaded: " +#define DRIVER_LOAD_MSG "Intel " QIB_DRV_NAME " loaded: " #define PFX QIB_DRV_NAME ": " static DEFINE_PCI_DEVICE_TABLE(qib_pci_tbl) = { @@ -1355,7 +1355,7 @@ static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) dd = qib_init_iba6120_funcs(pdev, ent); #else qib_early_err(&pdev->dev, - "QLogic PCIE device 0x%x cannot work if CONFIG_PCI_MSI is not enabled\n", + "Intel PCIE device 0x%x cannot work if CONFIG_PCI_MSI is not enabled\n", ent->device); dd = ERR_PTR(-ENODEV); #endif @@ -1371,7 +1371,7 @@ static int qib_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) default: qib_early_err(&pdev->dev, - "Failing on unknown QLogic deviceid 0x%x\n", + "Failing on unknown Intel deviceid 0x%x\n", ent->device); ret = -ENODEV; } diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c index 50a8a0d..08a6c6d 100644 --- a/drivers/infiniband/hw/qib/qib_sd7220.c +++ b/drivers/infiniband/hw/qib/qib_sd7220.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2003, 2004, 2005, 2006 PathScale, Inc. All rights reserved. * @@ -44,7 +44,7 @@ #include "qib.h" #include "qib_7220.h" -#define SD7220_FW_NAME "qlogic/sd7220.fw" +#define SD7220_FW_NAME "intel/sd7220.fw" MODULE_FIRMWARE(SD7220_FW_NAME); /* diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c index ba51a47..7c0ab16 100644 --- a/drivers/infiniband/hw/qib/qib_verbs.c +++ b/drivers/infiniband/hw/qib/qib_verbs.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2012 Intel Corporation. All rights reserved. + * Copyright (c) 2012, 2013 Intel Corporation. All rights reserved. * Copyright (c) 2006 - 2012 QLogic Corporation. All rights reserved. * Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved. * @@ -2224,7 +2224,7 @@ int qib_register_ib_device(struct qib_devdata *dd) ibdev->dma_ops = &qib_dma_mapping_ops; snprintf(ibdev->node_desc, sizeof(ibdev->node_desc), - "QLogic Infiniband HCA %s", init_utsname()->nodename); + "Intel Infiniband HCA %s", init_utsname()->nodename); ret = ib_register_device(ibdev, qib_create_port_files); if (ret) diff --git a/firmware/Makefile b/firmware/Makefile index cbb09ce..5d8ee13 100644 --- a/firmware/Makefile +++ b/firmware/Makefile @@ -82,7 +82,7 @@ fw-shipped-$(CONFIG_SCSI_ADVANSYS) += advansys/mcode.bin advansys/38C1600.bin \ fw-shipped-$(CONFIG_SCSI_QLOGIC_1280) += qlogic/1040.bin qlogic/1280.bin \ qlogic/12160.bin fw-shipped-$(CONFIG_SCSI_QLOGICPTI) += qlogic/isp1000.bin -fw-shipped-$(CONFIG_INFINIBAND_QIB) += qlogic/sd7220.fw +fw-shipped-$(CONFIG_INFINIBAND_QIB) += intel/sd7220.fw fw-shipped-$(CONFIG_SND_KORG1212) += korg/k1212.dsp fw-shipped-$(CONFIG_SND_MAESTRO3) += ess/maestro3_assp_kernel.fw \ 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-:00000001FF -- cgit v1.1 From 16dad1d743d31a104a849c8944e6b9eb479f6cd7 Mon Sep 17 00:00:00 2001 From: Torsten Duwe Date: Sat, 23 Mar 2013 15:38:22 +0100 Subject: KMS: fix EDID detailed timing vsync parsing EDID spreads some values across multiple bytes; bit-fiddling is needed to retrieve these. The current code to parse "detailed timings" has a cut&paste error that results in a vsync offset of at most 15 lines instead of 63. See http://en.wikipedia.org/wiki/EDID and in the "EDID Detailed Timing Descriptor" see bytes 10+11 show why that needs to be a left shift. Cc: stable@vger.kernel.org Signed-off-by: Torsten Duwe Signed-off-by: Linus Torvalds --- drivers/gpu/drm/drm_edid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index c194f4e..0dcbb63 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1634,7 +1634,7 @@ static struct drm_display_mode *drm_mode_detailed(struct drm_device *dev, unsigned vblank = (pt->vactive_vblank_hi & 0xf) << 8 | pt->vblank_lo; unsigned hsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc0) << 2 | pt->hsync_offset_lo; unsigned hsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x30) << 4 | pt->hsync_pulse_width_lo; - unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) >> 2 | pt->vsync_offset_pulse_width_lo >> 4; + unsigned vsync_offset = (pt->hsync_vsync_offset_pulse_width_hi & 0xc) << 2 | pt->vsync_offset_pulse_width_lo >> 4; unsigned vsync_pulse_width = (pt->hsync_vsync_offset_pulse_width_hi & 0x3) << 4 | (pt->vsync_offset_pulse_width_lo & 0xf); /* ignore tiny modes */ -- cgit v1.1 From c19b3b0f6eed552952845e4ad908dba2113d67b4 Mon Sep 17 00:00:00 2001 From: Torsten Duwe Date: Sat, 23 Mar 2013 15:39:34 +0100 Subject: KMS: fix EDID detailed timing frame rate When KMS has parsed an EDID "detailed timing", it leaves the frame rate zeroed. Consecutive (debug-) output of that mode thus yields 0 for vsync. This simple fix also speeds up future invocations of drm_mode_vrefresh(). While it is debatable whether this qualifies as a -stable fix I'd apply it for consistency's sake; drm_helper_probe_single_connector_modes() does the same thing already for all probed modes. Cc: stable@vger.kernel.org Signed-off-by: Torsten Duwe Signed-off-by: Linus Torvalds --- drivers/gpu/drm/drm_edid.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 0dcbb63..e2acfdb 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -1715,6 +1715,7 @@ set_size: } mode->type = DRM_MODE_TYPE_DRIVER; + mode->vrefresh = drm_mode_vrefresh(mode); drm_mode_set_name(mode); return mode; -- cgit v1.1 From 8bb9660418e05bb1845ac1a2428444d78e322cc7 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 23 Mar 2013 16:52:44 -0700 Subject: Linux 3.9-rc4 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 22113a7..54d2b2a 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 9 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v1.1 From bba2181c49f1dddf8b592804a1b53cc1a3cf408a Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 22 Mar 2013 10:53:40 +0100 Subject: Revert "drm/i915: set TRANSCODER_EDP even earlier" This reverts commit cc464b2a17c59adedbdc02cc54341d630354edc3. The reason is that Takashi Iwai reported a regression bisected to this commit: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html His machine has eDP on port D (usual desktop all-in-on setup), which intel_dp.c identifies as an eDP panel, but the hsw ddi code mishandles. Closer inspection of the code reveals that haswell_crtc_mode_set also checks intel_encoder_is_pch_edp when setting is_cpu_edp. On haswell that doesn't make much sense (since there's no edp on the pch), but what this function _really_ checks is whether that edp connector is on port A or port D. It's just that on ilk-ivb port D was on the pch ... So that explains why this seemingly innocent change killed eDP on port D. Furthermore it looks like everything else accidentally works, since we've never enabled eDP on port D support for hsw intentionally (e.g. we still register the HDMI output for port D in that case). But in retrospective I also don't like that this leaks highly platform specific details into common code, and the reason is that the drm vblank layer sucks. So instead I think we should: - move the cpu_transcoder into the dynamic pipe_config tracking (once that's merged). - fix up the drm vblank layer to finally deal with kms crtc objects instead of int pipes. v2: Pimp commit message with the better diagnosis as discussed with Paulo on irc. Cc: Paulo Zanoni Cc: Takashi Iwai Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 287b42c..b20d501 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -5771,6 +5771,11 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc, num_connectors++; } + if (is_cpu_edp) + intel_crtc->cpu_transcoder = TRANSCODER_EDP; + else + intel_crtc->cpu_transcoder = pipe; + /* We are not sure yet this won't happen. */ WARN(!HAS_PCH_LPT(dev), "Unexpected PCH type %d\n", INTEL_PCH_TYPE(dev)); @@ -5837,11 +5842,6 @@ static int intel_crtc_mode_set(struct drm_crtc *crtc, int pipe = intel_crtc->pipe; int ret; - if (IS_HASWELL(dev) && intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) - intel_crtc->cpu_transcoder = TRANSCODER_EDP; - else - intel_crtc->cpu_transcoder = pipe; - drm_vblank_pre_modeset(dev, pipe); ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode, -- cgit v1.1 From 2124b72e6283c4e84a55e71077fee91793f4c801 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Fri, 22 Mar 2013 14:07:23 -0300 Subject: drm/i915: don't disable the power well yet We're still not 100% ready to disable the power well, so don't disable it for now. When we disable it we break the audio driver (because some of the audio registers are on the power well) and machines with eDP on port D (because it doesn't use TRANSCODER_EDP). Also, instead of just reverting the code, add a Kernel option to let us disable it if we want. This will allow us to keep developing and testing the feature while it's not enabled. This fixes problems caused by the following commit: commit d6dd9eb1d96d2b7345fe4664066c2b7ed86da898 Author: Daniel Vetter Date: Tue Jan 29 16:35:20 2013 -0200 drm/i915: dynamic Haswell display power well support References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html Cc: Takashi Iwai Cc: Mengdong Lin Signed-off-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.c | 5 +++++ drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 3 +++ 3 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 0a8eceb..e9b5789 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -125,6 +125,11 @@ MODULE_PARM_DESC(preliminary_hw_support, "Enable Haswell and ValleyView Support. " "(default: false)"); +int i915_disable_power_well __read_mostly = 0; +module_param_named(disable_power_well, i915_disable_power_well, int, 0600); +MODULE_PARM_DESC(disable_power_well, + "Disable the power well when possible (default: false)"); + static struct drm_driver driver; extern int intel_agp_enabled; diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index e95337c..01769e2 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1398,6 +1398,7 @@ extern int i915_enable_fbc __read_mostly; extern bool i915_enable_hangcheck __read_mostly; extern int i915_enable_ppgtt __read_mostly; extern unsigned int i915_preliminary_hw_support __read_mostly; +extern int i915_disable_power_well __read_mostly; extern int i915_suspend(struct drm_device *dev, pm_message_t state); extern int i915_resume(struct drm_device *dev); diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a1794c6..adca007 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4079,6 +4079,9 @@ void intel_set_power_well(struct drm_device *dev, bool enable) if (!IS_HASWELL(dev)) return; + if (!i915_disable_power_well && !enable) + return; + tmp = I915_READ(HSW_PWR_WELL_DRIVER); is_enabled = tmp & HSW_PWR_WELL_STATE; enable_requested = tmp & HSW_PWR_WELL_ENABLE; -- cgit v1.1 From b1289371fcd580b4c412e6d05c4cb8ac8d277239 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 22 Mar 2013 15:44:46 +0100 Subject: Revert "drm/i915: write backlight harder" This reverts commit cf0a6584aa6d382f802f2c3cacac23ccbccde0cd. Turns out that cargo-culting breaks systems. Note that we can't revert further, since commit 770c12312ad617172b1a65b911d3e6564fc5aca8 Author: Takashi Iwai Date: Sat Aug 11 08:56:42 2012 +0200 drm/i915: Fix blank panel at reopening lid fixed a regression in 3.6-rc kernels for which we've never figured out the exact root cause. But some further inspection of the backlight code reveals that it's seriously lacking locking. And especially the asle backlight update is know to get fired (through some smm magic) when writing specific backlight control registers. So the possibility of suffering from races is rather real. Until those races are fixed I don't think it makes sense to try further hacks. Which sucks a bit, but sometimes that's how it is :( References: http://www.mail-archive.com/intel-gfx@lists.freedesktop.org/msg18788.html Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47941 Tested-by: Takashi Iwai Cc: Jani Nikula Cc: Takashi Iwai Cc: stable@vger.kernel.org (the reverted commit was cc: stable, too) Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_panel.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index a3730e0..bee8cb6 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -321,9 +321,6 @@ void intel_panel_enable_backlight(struct drm_device *dev, if (dev_priv->backlight_level == 0) dev_priv->backlight_level = intel_panel_get_max_backlight(dev); - dev_priv->backlight_enabled = true; - intel_panel_actually_set_backlight(dev, dev_priv->backlight_level); - if (INTEL_INFO(dev)->gen >= 4) { uint32_t reg, tmp; @@ -359,12 +356,12 @@ void intel_panel_enable_backlight(struct drm_device *dev, } set_level: - /* Check the current backlight level and try to set again if it's zero. - * On some machines, BLC_PWM_CPU_CTL is cleared to zero automatically - * when BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1 are written. + /* Call below after setting BLC_PWM_CPU_CTL2 and BLC_PWM_PCH_CTL1. + * BLC_PWM_CPU_CTL may be cleared to zero automatically when these + * registers are set. */ - if (!intel_panel_get_backlight(dev)) - intel_panel_actually_set_backlight(dev, dev_priv->backlight_level); + dev_priv->backlight_enabled = true; + intel_panel_actually_set_backlight(dev, dev_priv->backlight_level); } static void intel_panel_init_backlight(struct drm_device *dev) -- cgit v1.1 From 9979a55a833883242e3a29f3596676edd7199c46 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 22 Mar 2013 14:38:28 +0000 Subject: net: remove a WARN_ON() in net_enable_timestamp() The WARN_ON(in_interrupt()) in net_enable_timestamp() can get false positive, in socket clone path, run from softirq context : [ 3641.624425] WARNING: at net/core/dev.c:1532 net_enable_timestamp+0x7b/0x80() [ 3641.668811] Call Trace: [ 3641.671254] [] warn_slowpath_common+0x87/0xc0 [ 3641.677871] [] warn_slowpath_null+0x1a/0x20 [ 3641.683683] [] net_enable_timestamp+0x7b/0x80 [ 3641.689668] [] sk_clone_lock+0x425/0x450 [ 3641.695222] [] inet_csk_clone_lock+0x16/0x170 [ 3641.701213] [] tcp_create_openreq_child+0x29/0x820 [ 3641.707663] [] ? ipt_do_table+0x222/0x670 [ 3641.713354] [] tcp_v4_syn_recv_sock+0xab/0x3d0 [ 3641.719425] [] tcp_check_req+0x3da/0x530 [ 3641.724979] [] ? inet_hashinfo_init+0x60/0x80 [ 3641.730964] [] ? tcp_v4_rcv+0x79f/0xbe0 [ 3641.736430] [] tcp_v4_do_rcv+0x38d/0x4f0 [ 3641.741985] [] tcp_v4_rcv+0xa7a/0xbe0 Its safe at this point because the parent socket owns a reference on the netstamp_needed, so we cant have a 0 -> 1 transition, which requires to lock a mutex. Instead of refining the check, lets remove it, as all known callers are safe. If it ever changes in the future, static_key_slow_inc() will complain anyway. Reported-by: Laurent Chavey Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/dev.c | 1 - 1 file changed, 1 deletion(-) diff --git a/net/core/dev.c b/net/core/dev.c index d540ced..b13e5c7 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1545,7 +1545,6 @@ void net_enable_timestamp(void) return; } #endif - WARN_ON(in_interrupt()); static_key_slow_inc(&netstamp_needed); } EXPORT_SYMBOL(net_enable_timestamp); -- cgit v1.1 From 4a7df340ed1bac190c124c1601bfc10cde9fb4fb Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Fri, 22 Mar 2013 19:14:07 +0000 Subject: 8021q: fix a potential use-after-free vlan_vid_del() could possibly free ->vlan_info after a RCU grace period, however, we may still refer to the freed memory area by 'grp' pointer. Found by code inspection. This patch moves vlan_vid_del() as behind as possible. Cc: Patrick McHardy Cc: "David S. Miller" Signed-off-by: Cong Wang Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/8021q/vlan.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c index a187144..85addcd 100644 --- a/net/8021q/vlan.c +++ b/net/8021q/vlan.c @@ -86,13 +86,6 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) grp = &vlan_info->grp; - /* Take it out of our own structures, but be sure to interlock with - * HW accelerating devices or SW vlan input packet processing if - * VLAN is not 0 (leave it there for 802.1p). - */ - if (vlan_id) - vlan_vid_del(real_dev, vlan_id); - grp->nr_vlan_devs--; if (vlan->flags & VLAN_FLAG_MVRP) @@ -114,6 +107,13 @@ void unregister_vlan_dev(struct net_device *dev, struct list_head *head) vlan_gvrp_uninit_applicant(real_dev); } + /* Take it out of our own structures, but be sure to interlock with + * HW accelerating devices or SW vlan input packet processing if + * VLAN is not 0 (leave it there for 802.1p). + */ + if (vlan_id) + vlan_vid_del(real_dev, vlan_id); + /* Get rid of the vlan's reference to real_dev */ dev_put(real_dev); } -- cgit v1.1 From 9b46922e15f4d9d2aedcd320c3b7f7f54d956da7 Mon Sep 17 00:00:00 2001 From: Hong zhi guo Date: Sat, 23 Mar 2013 02:27:50 +0000 Subject: bridge: fix crash when set mac address of br interface When I tried to set mac address of a bridge interface to a mac address which already learned on this bridge, I got system hang. The cause is straight forward: function br_fdb_change_mac_address calls fdb_insert with NULL source nbp. Then an fdb lookup is performed. If an fdb entry is found and it's local, it's OK. But if it's not local, source is dereferenced for printk without NULL check. Signed-off-by: Hong Zhiguo Signed-off-by: David S. Miller --- net/bridge/br_fdb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index b0812c9..bab338e 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -423,7 +423,7 @@ static int fdb_insert(struct net_bridge *br, struct net_bridge_port *source, return 0; br_warn(br, "adding interface %s with same address " "as a received packet\n", - source->dev->name); + source ? source->dev->name : br->dev->name); fdb_delete(br, fdb); } -- cgit v1.1 From 8fe7f99a9e11a43183bc27420309ae105e1fec1a Mon Sep 17 00:00:00 2001 From: Kumar Amit Mehta Date: Sat, 23 Mar 2013 20:10:25 +0000 Subject: bnx2x: fix assignment of signed expression to unsigned variable fix for incorrect assignment of signed expression to unsigned variable. Signed-off-by: Kumar Amit Mehta Acked-by: Dmitry Kravkov Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c index 5682054..91ecd6a 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_dcb.c @@ -2139,12 +2139,12 @@ static u8 bnx2x_dcbnl_get_cap(struct net_device *netdev, int capid, u8 *cap) break; default: BNX2X_ERR("Non valid capability ID\n"); - rval = -EINVAL; + rval = 1; break; } } else { DP(BNX2X_MSG_DCB, "DCB disabled\n"); - rval = -EINVAL; + rval = 1; } DP(BNX2X_MSG_DCB, "capid %d:%x\n", capid, *cap); @@ -2170,12 +2170,12 @@ static int bnx2x_dcbnl_get_numtcs(struct net_device *netdev, int tcid, u8 *num) break; default: BNX2X_ERR("Non valid TC-ID\n"); - rval = -EINVAL; + rval = 1; break; } } else { DP(BNX2X_MSG_DCB, "DCB disabled\n"); - rval = -EINVAL; + rval = 1; } return rval; @@ -2188,7 +2188,7 @@ static int bnx2x_dcbnl_set_numtcs(struct net_device *netdev, int tcid, u8 num) return -EINVAL; } -static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev) +static u8 bnx2x_dcbnl_get_pfc_state(struct net_device *netdev) { struct bnx2x *bp = netdev_priv(netdev); DP(BNX2X_MSG_DCB, "state = %d\n", bp->dcbx_local_feat.pfc.enabled); @@ -2390,12 +2390,12 @@ static u8 bnx2x_dcbnl_get_featcfg(struct net_device *netdev, int featid, break; default: BNX2X_ERR("Non valid featrue-ID\n"); - rval = -EINVAL; + rval = 1; break; } } else { DP(BNX2X_MSG_DCB, "DCB disabled\n"); - rval = -EINVAL; + rval = 1; } return rval; @@ -2431,12 +2431,12 @@ static u8 bnx2x_dcbnl_set_featcfg(struct net_device *netdev, int featid, break; default: BNX2X_ERR("Non valid featrue-ID\n"); - rval = -EINVAL; + rval = 1; break; } } else { DP(BNX2X_MSG_DCB, "dcbnl call not valid\n"); - rval = -EINVAL; + rval = 1; } return rval; -- cgit v1.1 From 7ebe183c6d444ef5587d803b64a1f4734b18c564 Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Sun, 24 Mar 2013 10:42:25 +0000 Subject: tcp: undo spurious timeout after SACK reneging On SACK reneging the sender immediately retransmits and forces a timeout but disables Eifel (undo). If the (buggy) receiver does not drop any packet this can trigger a false slow-start retransmit storm driven by the ACKs of the original packets. This can be detected with undo and TCP timestamps. Signed-off-by: Yuchung Cheng Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 0d9bdac..3bd55ba 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2059,11 +2059,8 @@ void tcp_enter_loss(struct sock *sk, int how) if (tcp_is_reno(tp)) tcp_reset_reno_sack(tp); - if (!how) { - /* Push undo marker, if it was plain RTO and nothing - * was retransmitted. */ - tp->undo_marker = tp->snd_una; - } else { + tp->undo_marker = tp->snd_una; + if (how) { tp->sacked_out = 0; tp->fackets_out = 0; } -- cgit v1.1 From 087aa036eb79f24b856893190359ba812b460f45 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 25 Mar 2013 09:31:31 +0800 Subject: powerpc: make additional room in exception vector area The FWNMI region is fixed at 0x7000 and the vector are now overflowing that with allmodconfig. Fix that by moving slb_miss_realmode code out of that region as it doesn't need to be that close to the call sites (it is a _GLOBAL function) Fixes this build error: arch/powerpc/kernel/exceptions-64s.S: Assembler messages: arch/powerpc/kernel/exceptions-64s.S:1304: Error: attempt to move .org backwards Signed-off-by: Chen Gang Signed-off-by: Stephen Rothwell --- arch/powerpc/kernel/exceptions-64s.S | 144 +++++++++++++++++------------------ 1 file changed, 72 insertions(+), 72 deletions(-) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 200afa5..56bd923 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1066,78 +1066,6 @@ unrecov_user_slb: #endif /* __DISABLED__ */ -/* - * r13 points to the PACA, r9 contains the saved CR, - * r12 contain the saved SRR1, SRR0 is still ready for return - * r3 has the faulting address - * r9 - r13 are saved in paca->exslb. - * r3 is saved in paca->slb_r3 - * We assume we aren't going to take any exceptions during this procedure. - */ -_GLOBAL(slb_miss_realmode) - mflr r10 -#ifdef CONFIG_RELOCATABLE - mtctr r11 -#endif - - stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */ - std r10,PACA_EXSLB+EX_LR(r13) /* save LR */ - - bl .slb_allocate_realmode - - /* All done -- return from exception. */ - - ld r10,PACA_EXSLB+EX_LR(r13) - ld r3,PACA_EXSLB+EX_R3(r13) - lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */ - - mtlr r10 - - andi. r10,r12,MSR_RI /* check for unrecoverable exception */ - beq- 2f - -.machine push -.machine "power4" - mtcrf 0x80,r9 - mtcrf 0x01,r9 /* slb_allocate uses cr0 and cr7 */ -.machine pop - - RESTORE_PPR_PACA(PACA_EXSLB, r9) - ld r9,PACA_EXSLB+EX_R9(r13) - ld r10,PACA_EXSLB+EX_R10(r13) - ld r11,PACA_EXSLB+EX_R11(r13) - ld r12,PACA_EXSLB+EX_R12(r13) - ld r13,PACA_EXSLB+EX_R13(r13) - rfid - b . /* prevent speculative execution */ - -2: mfspr r11,SPRN_SRR0 - ld r10,PACAKBASE(r13) - LOAD_HANDLER(r10,unrecov_slb) - mtspr SPRN_SRR0,r10 - ld r10,PACAKMSR(r13) - mtspr SPRN_SRR1,r10 - rfid - b . - -unrecov_slb: - EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB) - DISABLE_INTS - bl .save_nvgprs -1: addi r3,r1,STACK_FRAME_OVERHEAD - bl .unrecoverable_exception - b 1b - - -#ifdef CONFIG_PPC_970_NAP -power4_fixup_nap: - andc r9,r9,r10 - std r9,TI_LOCAL_FLAGS(r11) - ld r10,_LINK(r1) /* make idle task do the */ - std r10,_NIP(r1) /* equivalent of a blr */ - blr -#endif - .align 7 .globl alignment_common alignment_common: @@ -1336,6 +1264,78 @@ _GLOBAL(opal_mc_secondary_handler) /* + * r13 points to the PACA, r9 contains the saved CR, + * r12 contain the saved SRR1, SRR0 is still ready for return + * r3 has the faulting address + * r9 - r13 are saved in paca->exslb. + * r3 is saved in paca->slb_r3 + * We assume we aren't going to take any exceptions during this procedure. + */ +_GLOBAL(slb_miss_realmode) + mflr r10 +#ifdef CONFIG_RELOCATABLE + mtctr r11 +#endif + + stw r9,PACA_EXSLB+EX_CCR(r13) /* save CR in exc. frame */ + std r10,PACA_EXSLB+EX_LR(r13) /* save LR */ + + bl .slb_allocate_realmode + + /* All done -- return from exception. */ + + ld r10,PACA_EXSLB+EX_LR(r13) + ld r3,PACA_EXSLB+EX_R3(r13) + lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */ + + mtlr r10 + + andi. r10,r12,MSR_RI /* check for unrecoverable exception */ + beq- 2f + +.machine push +.machine "power4" + mtcrf 0x80,r9 + mtcrf 0x01,r9 /* slb_allocate uses cr0 and cr7 */ +.machine pop + + RESTORE_PPR_PACA(PACA_EXSLB, r9) + ld r9,PACA_EXSLB+EX_R9(r13) + ld r10,PACA_EXSLB+EX_R10(r13) + ld r11,PACA_EXSLB+EX_R11(r13) + ld r12,PACA_EXSLB+EX_R12(r13) + ld r13,PACA_EXSLB+EX_R13(r13) + rfid + b . /* prevent speculative execution */ + +2: mfspr r11,SPRN_SRR0 + ld r10,PACAKBASE(r13) + LOAD_HANDLER(r10,unrecov_slb) + mtspr SPRN_SRR0,r10 + ld r10,PACAKMSR(r13) + mtspr SPRN_SRR1,r10 + rfid + b . + +unrecov_slb: + EXCEPTION_PROLOG_COMMON(0x4100, PACA_EXSLB) + DISABLE_INTS + bl .save_nvgprs +1: addi r3,r1,STACK_FRAME_OVERHEAD + bl .unrecoverable_exception + b 1b + + +#ifdef CONFIG_PPC_970_NAP +power4_fixup_nap: + andc r9,r9,r10 + std r9,TI_LOCAL_FLAGS(r11) + ld r10,_LINK(r1) /* make idle task do the */ + std r10,_NIP(r1) /* equivalent of a blr */ + blr +#endif + +/* * Hash table stuff */ .align 7 -- cgit v1.1 From b563b4e3f2dd601e19b46ada31bd176fc0a16efc Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Fri, 22 Mar 2013 01:29:28 +0100 Subject: cpufreq / intel_pstate: Add function to check that all MSRs are valid Some VMs seem to try to implement some MSRs but not all the registers the driver needs. Check to make sure all the MSR that we need are available. If any of the required MSRs are not available refuse to load. References: https://bugzilla.redhat.com/show_bug.cgi?id=922923 Reported-by: Josh Stone Signed-off-by: Dirk Brandewie Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index f6dd1e7..cd9c5f4 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -752,6 +752,29 @@ static struct cpufreq_driver intel_pstate_driver = { static int __initdata no_load; +static int intel_pstate_msrs_not_valid(void) +{ + /* Check that all the msr's we are using are valid. */ + u64 aperf, mperf, tmp; + + rdmsrl(MSR_IA32_APERF, aperf); + rdmsrl(MSR_IA32_MPERF, mperf); + + if (!intel_pstate_min_pstate() || + !intel_pstate_max_pstate() || + !intel_pstate_turbo_pstate()) + return -ENODEV; + + rdmsrl(MSR_IA32_APERF, tmp); + if (!(tmp - aperf)) + return -ENODEV; + + rdmsrl(MSR_IA32_MPERF, tmp); + if (!(tmp - mperf)) + return -ENODEV; + + return 0; +} static int __init intel_pstate_init(void) { int cpu, rc = 0; @@ -764,6 +787,9 @@ static int __init intel_pstate_init(void) if (!id) return -ENODEV; + if (intel_pstate_msrs_not_valid()) + return -ENODEV; + pr_info("Intel P-state driver initializing.\n"); all_cpu_data = vmalloc(sizeof(void *) * num_possible_cpus()); -- cgit v1.1 From e6f3eb29be471c4b536a91daab76d4aeda72a261 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Sun, 24 Mar 2013 00:54:39 +0100 Subject: cpufreq / intel_pstate: Fix calculation of current frequency Use the correct pstate value to calculate the effective frequency. References: https://bugzilla.redhat.com/show_bug.cgi?id=923942 Reported-by: Satish Balay Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index cd9c5f4..b662529 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -454,7 +454,7 @@ static inline void intel_pstate_calc_busy(struct cpudata *cpu, sample->idletime_us * 100, sample->duration_us); core_pct = div64_u64(sample->aperf * 100, sample->mperf); - sample->freq = cpu->pstate.turbo_pstate * core_pct * 1000; + sample->freq = cpu->pstate.max_pstate * core_pct * 1000; sample->core_pct_busy = div_s64((sample->pstate_pct_busy * core_pct), 100); -- cgit v1.1 From 05e99c8cf9d4e53ef6e016815db40a89a6156529 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Wed, 20 Mar 2013 14:21:10 +0000 Subject: intel-pstate: Use #defines instead of hard-coded values. They are defined in coreboot (MSR_PLATFORM) and the other one is already defined in msr-index.h. Let's use those. Signed-off-by: Konrad Rzeszutek Wilk Acked-by: Viresh Kumar Acked-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- arch/x86/include/uapi/asm/msr-index.h | 1 + drivers/cpufreq/intel_pstate.c | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h index 892ce40..7a060f4 100644 --- a/arch/x86/include/uapi/asm/msr-index.h +++ b/arch/x86/include/uapi/asm/msr-index.h @@ -44,6 +44,7 @@ #define SNB_C1_AUTO_UNDEMOTE (1UL << 27) #define SNB_C3_AUTO_UNDEMOTE (1UL << 28) +#define MSR_PLATFORM_INFO 0x000000ce #define MSR_MTRRcap 0x000000fe #define MSR_IA32_BBL_CR_CTL 0x00000119 #define MSR_IA32_BBL_CR_CTL3 0x0000011e diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index b662529..ad72922 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -358,14 +358,14 @@ static void intel_pstate_sysfs_expose_params(void) static int intel_pstate_min_pstate(void) { u64 value; - rdmsrl(0xCE, value); + rdmsrl(MSR_PLATFORM_INFO, value); return (value >> 40) & 0xFF; } static int intel_pstate_max_pstate(void) { u64 value; - rdmsrl(0xCE, value); + rdmsrl(MSR_PLATFORM_INFO, value); return (value >> 8) & 0xFF; } @@ -373,7 +373,7 @@ static int intel_pstate_turbo_pstate(void) { u64 value; int nont, ret; - rdmsrl(0x1AD, value); + rdmsrl(MSR_NHM_TURBO_RATIO_LIMIT, value); nont = intel_pstate_max_pstate(); ret = ((value) & 255); if (ret <= nont) -- cgit v1.1 From 187da1d97f3a949b967274d7ee2f95d3a4f39251 Mon Sep 17 00:00:00 2001 From: viresh kumar Date: Fri, 22 Mar 2013 10:13:52 +0000 Subject: cpufreq: stats: do cpufreq_cpu_put() corresponding to cpufreq_cpu_get() In cpufreq_stats_free_sysfs() we aren't balancing calls to cpufreq_cpu_get() with cpufreq_cpu_put(). This will never let us have ref count to policy->kobj as zero. We will get a hang if somehow cpufreq_driver_unregister() is called. And that can happen when we compile our driver as module and insmod/rmmod it. Signed-off-by: Viresh Kumar Acked-by: Amit Kucheria Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_stats.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/cpufreq/cpufreq_stats.c b/drivers/cpufreq/cpufreq_stats.c index 2fd779e..bfd6273 100644 --- a/drivers/cpufreq/cpufreq_stats.c +++ b/drivers/cpufreq/cpufreq_stats.c @@ -180,15 +180,19 @@ static void cpufreq_stats_free_sysfs(unsigned int cpu) { struct cpufreq_policy *policy = cpufreq_cpu_get(cpu); - if (!cpufreq_frequency_get_table(cpu)) + if (!policy) return; - if (policy && !policy_is_shared(policy)) { + if (!cpufreq_frequency_get_table(cpu)) + goto put_ref; + + if (!policy_is_shared(policy)) { pr_debug("%s: Free sysfs stat\n", __func__); sysfs_remove_group(&policy->kobj, &stats_attr_group); } - if (policy) - cpufreq_cpu_put(policy); + +put_ref: + cpufreq_cpu_put(policy); } static int cpufreq_stats_create_table(struct cpufreq_policy *policy, -- cgit v1.1 From aa77a52764a92216b61a6c8079b5c01937c046cd Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Sun, 24 Mar 2013 15:58:12 +0000 Subject: cpufreq: acpi-cpufreq: Don't set policy->related_cpus from .init() With the addition of following patch: fcf8058 cpufreq: Simplify cpufreq_add_dev() cpufreq driver's .init() routine must initialize policy->cpus with mask of all possible CPUs (Online + Offline) that share the clock. Then the core would copy this mask onto policy->related_cpus and will reset policy->cpus to carry only online cpus. acpi-cpufreq driver wasn't updated with this assumption and so sometimes when we try to hot[un]plug CPUs at run time, sysfs directories get corrupted. This patch fixes acpi-cpufreq driver against this corruption. Reported-and-tested-by: Maciej Rutecki Tested-by: Borislav Petkov Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/acpi-cpufreq.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c index 937bc28..57a8774 100644 --- a/drivers/cpufreq/acpi-cpufreq.c +++ b/drivers/cpufreq/acpi-cpufreq.c @@ -730,7 +730,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy) policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) { cpumask_copy(policy->cpus, perf->shared_cpu_map); } - cpumask_copy(policy->related_cpus, perf->shared_cpu_map); #ifdef CONFIG_SMP dmi_check_system(sw_any_bug_dmi_table); @@ -742,7 +741,6 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy) if (check_amd_hwpstate_cpu(cpu) && !acpi_pstate_strict) { cpumask_clear(policy->cpus); cpumask_set_cpu(cpu, policy->cpus); - cpumask_copy(policy->related_cpus, cpu_sibling_mask(cpu)); policy->shared_type = CPUFREQ_SHARED_TYPE_HW; pr_info_once(PFX "overriding BIOS provided _PSD data\n"); } -- cgit v1.1 From 1166fde6a923c30f4351515b6a9a1efc513e7d00 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 25 Mar 2013 11:23:40 -0400 Subject: SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked We need to be careful when testing task->tk_waitqueue in rpc_wake_up_task_queue_locked, because it can be changed while we are holding the queue->lock. By adding appropriate memory barriers, we can ensure that it is safe to test task->tk_waitqueue for equality if the RPC_TASK_QUEUED bit is set. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- net/sunrpc/sched.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index fb20f25..f8529fc 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -180,6 +180,8 @@ static void __rpc_add_wait_queue(struct rpc_wait_queue *queue, list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]); task->tk_waitqueue = queue; queue->qlen++; + /* barrier matches the read in rpc_wake_up_task_queue_locked() */ + smp_wmb(); rpc_set_queued(task); dprintk("RPC: %5u added to queue %p \"%s\"\n", @@ -430,8 +432,11 @@ static void __rpc_do_wake_up_task(struct rpc_wait_queue *queue, struct rpc_task */ static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct rpc_task *task) { - if (RPC_IS_QUEUED(task) && task->tk_waitqueue == queue) - __rpc_do_wake_up_task(queue, task); + if (RPC_IS_QUEUED(task)) { + smp_rmb(); + if (task->tk_waitqueue == queue) + __rpc_do_wake_up_task(queue, task); + } } /* -- cgit v1.1 From ded34e0fe8fe8c2d595bfa30626654e4b87621e0 Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Mon, 25 Mar 2013 03:18:33 +0000 Subject: unix: fix a race condition in unix_release() As reported by Jan, and others over the past few years, there is a race condition caused by unix_release setting the sock->sk pointer to NULL before properly marking the socket as dead/orphaned. This can cause a problem with the LSM hook security_unix_may_send() if there is another socket attempting to write to this partially released socket in between when sock->sk is set to NULL and it is marked as dead/orphaned. This patch fixes this by only setting sock->sk to NULL after the socket has been marked as dead; I also take the opportunity to make unix_release_sock() a void function as it only ever returned 0/success. Dave, I think this one should go on the -stable pile. Special thanks to Jan for coming up with a reproducer for this problem. Reported-by: Jan Stancek Signed-off-by: Paul Moore Signed-off-by: David S. Miller --- net/unix/af_unix.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 51be64f..f153a8d 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -382,7 +382,7 @@ static void unix_sock_destructor(struct sock *sk) #endif } -static int unix_release_sock(struct sock *sk, int embrion) +static void unix_release_sock(struct sock *sk, int embrion) { struct unix_sock *u = unix_sk(sk); struct path path; @@ -451,8 +451,6 @@ static int unix_release_sock(struct sock *sk, int embrion) if (unix_tot_inflight) unix_gc(); /* Garbage collect fds */ - - return 0; } static void init_peercred(struct sock *sk) @@ -699,9 +697,10 @@ static int unix_release(struct socket *sock) if (!sk) return 0; + unix_release_sock(sk, 0); sock->sk = NULL; - return unix_release_sock(sk, 0); + return 0; } static int unix_autobind(struct socket *sock) -- cgit v1.1 From 09ce0c0c8a99651cace20958278476ee3f31678c Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 20 Mar 2013 09:30:00 +0800 Subject: usb: xhci: fix build warning MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit /home/b29397/work/code/git/linus/linux-2.6/drivers/usb/host/xhci-ring.c: In function ‘handle_port_status’: /home/b29397/work/code/git/linus/linux-2.6/drivers/usb/host/xhci-ring.c:1580: warning: ‘hcd’ may be used uninitialized in this function Signed-off-by: Peter Chen Signed-off-by: Sarah Sharp --- drivers/usb/host/xhci-ring.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 8828754..ec26819 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1599,14 +1599,20 @@ static void handle_port_status(struct xhci_hcd *xhci, max_ports = HCS_MAX_PORTS(xhci->hcs_params1); if ((port_id <= 0) || (port_id > max_ports)) { xhci_warn(xhci, "Invalid port id %d\n", port_id); - bogus_port_status = true; - goto cleanup; + inc_deq(xhci, xhci->event_ring); + return; } /* Figure out which usb_hcd this port is attached to: * is it a USB 3.0 port or a USB 2.0/1.1 port? */ major_revision = xhci->port_array[port_id - 1]; + + /* Find the right roothub. */ + hcd = xhci_to_hcd(xhci); + if ((major_revision == 0x03) != (hcd->speed == HCD_USB3)) + hcd = xhci->shared_hcd; + if (major_revision == 0) { xhci_warn(xhci, "Event for port %u not in " "Extended Capabilities, ignoring.\n", @@ -1629,10 +1635,6 @@ static void handle_port_status(struct xhci_hcd *xhci, * into the index into the ports on the correct split roothub, and the * correct bus_state structure. */ - /* Find the right roothub. */ - hcd = xhci_to_hcd(xhci); - if ((major_revision == 0x03) != (hcd->speed == HCD_USB3)) - hcd = xhci->shared_hcd; bus_state = &xhci->bus_state[hcd_index(hcd)]; if (hcd->speed == HCD_USB3) port_array = xhci->usb3_ports; -- cgit v1.1 From 3f5eb14135ba9d97ba4b8514fc7ef5e0dac2abf4 Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Tue, 19 Mar 2013 16:48:12 +0800 Subject: usb: add find_raw_port_number callback to struct hc_driver() xhci driver divides the root hub into two logical hubs which work respectively for usb 2.0 and usb 3.0 devices. They are independent devices in the usb core. But in the ACPI table, it's one device node and all usb2.0 and usb3.0 ports are under it. Binding usb port with its acpi node needs the raw port number which is reflected in the xhci extended capabilities table. This patch is to add find_raw_port_number callback to struct hc_driver(), fill it with xhci_find_raw_port_number() which will return raw port number and add a wrap usb_hcd_find_raw_port_number(). Otherwise, refactor xhci_find_real_port_number(). Using xhci_find_raw_port_number() to get real index in the HW port status registers instead of scanning through the xHCI roothub port array. This can help to speed up. All addresses in xhci->usb2_ports and xhci->usb3_ports array are kown good ports and don't include following bad ports in the extended capabilities talbe. (1) root port that doesn't have an entry (2) root port with unknown speed (3) root port that is listed twice and with different speeds. So xhci_find_raw_port_number() will only return port num of good ones and never touch bad ports above. Signed-off-by: Lan Tianyu Signed-off-by: Sarah Sharp --- drivers/usb/core/hcd.c | 8 ++++++++ drivers/usb/host/xhci-mem.c | 36 ++++++++---------------------------- drivers/usb/host/xhci-pci.c | 1 + drivers/usb/host/xhci.c | 22 ++++++++++++++++++++++ drivers/usb/host/xhci.h | 1 + include/linux/usb/hcd.h | 2 ++ 6 files changed, 42 insertions(+), 28 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 99b34a3..f9ec44c 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2412,6 +2412,14 @@ int usb_hcd_is_primary_hcd(struct usb_hcd *hcd) } EXPORT_SYMBOL_GPL(usb_hcd_is_primary_hcd); +int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1) +{ + if (!hcd->driver->find_raw_port_number) + return port1; + + return hcd->driver->find_raw_port_number(hcd, port1); +} + static int usb_hcd_request_irqs(struct usb_hcd *hcd, unsigned int irqnum, unsigned long irqflags) { diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 35616ff..6dc238c 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1022,44 +1022,24 @@ void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, * is attached to (or the roothub port its ancestor hub is attached to). All we * know is the index of that port under either the USB 2.0 or the USB 3.0 * roothub, but that doesn't give us the real index into the HW port status - * registers. Scan through the xHCI roothub port array, looking for the Nth - * entry of the correct port speed. Return the port number of that entry. + * registers. Call xhci_find_raw_port_number() to get real index. */ static u32 xhci_find_real_port_number(struct xhci_hcd *xhci, struct usb_device *udev) { struct usb_device *top_dev; - unsigned int num_similar_speed_ports; - unsigned int faked_port_num; - int i; + struct usb_hcd *hcd; + + if (udev->speed == USB_SPEED_SUPER) + hcd = xhci->shared_hcd; + else + hcd = xhci->main_hcd; for (top_dev = udev; top_dev->parent && top_dev->parent->parent; top_dev = top_dev->parent) /* Found device below root hub */; - faked_port_num = top_dev->portnum; - for (i = 0, num_similar_speed_ports = 0; - i < HCS_MAX_PORTS(xhci->hcs_params1); i++) { - u8 port_speed = xhci->port_array[i]; - - /* - * Skip ports that don't have known speeds, or have duplicate - * Extended Capabilities port speed entries. - */ - if (port_speed == 0 || port_speed == DUPLICATE_ENTRY) - continue; - /* - * USB 3.0 ports are always under a USB 3.0 hub. USB 2.0 and - * 1.1 ports are under the USB 2.0 hub. If the port speed - * matches the device speed, it's a similar speed port. - */ - if ((port_speed == 0x03) == (udev->speed == USB_SPEED_SUPER)) - num_similar_speed_ports++; - if (num_similar_speed_ports == faked_port_num) - /* Roothub ports are numbered from 1 to N */ - return i+1; - } - return 0; + return xhci_find_raw_port_number(hcd, top_dev->portnum); } /* Setup an xHCI virtual device for a Set Address command */ diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index af259e0..1a30c38 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -313,6 +313,7 @@ static const struct hc_driver xhci_pci_hc_driver = { .set_usb2_hw_lpm = xhci_set_usb2_hardware_lpm, .enable_usb3_lpm_timeout = xhci_enable_usb3_lpm_timeout, .disable_usb3_lpm_timeout = xhci_disable_usb3_lpm_timeout, + .find_raw_port_number = xhci_find_raw_port_number, }; /*-------------------------------------------------------------------------*/ diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 849470b..53b8f89 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -3779,6 +3779,28 @@ int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) return 0; } +/* + * Transfer the port index into real index in the HW port status + * registers. Caculate offset between the port's PORTSC register + * and port status base. Divide the number of per port register + * to get the real index. The raw port number bases 1. + */ +int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1) +{ + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + __le32 __iomem *base_addr = &xhci->op_regs->port_status_base; + __le32 __iomem *addr; + int raw_port; + + if (hcd->speed != HCD_USB3) + addr = xhci->usb2_ports[port1 - 1]; + else + addr = xhci->usb3_ports[port1 - 1]; + + raw_port = (addr - base_addr)/NUM_PORT_REGS + 1; + return raw_port; +} + #ifdef CONFIG_USB_SUSPEND /* BESL to HIRD Encoding array for USB2 LPM */ diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 2c510e4..d798b69 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1829,6 +1829,7 @@ void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); +int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1); #ifdef CONFIG_PM int xhci_bus_suspend(struct usb_hcd *hcd); diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 0a78df5..59694b5 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -357,6 +357,7 @@ struct hc_driver { */ int (*disable_usb3_lpm_timeout)(struct usb_hcd *, struct usb_device *, enum usb3_link_state state); + int (*find_raw_port_number)(struct usb_hcd *, int); }; extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb); @@ -396,6 +397,7 @@ extern int usb_hcd_is_primary_hcd(struct usb_hcd *hcd); extern int usb_add_hcd(struct usb_hcd *hcd, unsigned int irqnum, unsigned long irqflags); extern void usb_remove_hcd(struct usb_hcd *hcd); +extern int usb_hcd_find_raw_port_number(struct usb_hcd *hcd, int port1); struct platform_device; extern void usb_hcd_platform_shutdown(struct platform_device *dev); -- cgit v1.1 From bafcaf6d84b5d1bf92dabd1ffe7753ed36b7552e Mon Sep 17 00:00:00 2001 From: Lan Tianyu Date: Tue, 19 Mar 2013 16:48:13 +0800 Subject: usb/acpi: binding xhci root hub usb port with ACPI This patch is to bind xhci root hub usb port with its acpi node. The port num in the acpi table matches with the sequence in the xhci extended capabilities table. So call usb_hcd_find_raw_port_number() to transfer hub port num into raw port number which associates with the sequence in the xhci extended capabilities table before binding. Signed-off-by: Lan Tianyu Signed-off-by: Sarah Sharp --- drivers/usb/core/usb-acpi.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c index b6f4bad..255c144 100644 --- a/drivers/usb/core/usb-acpi.c +++ b/drivers/usb/core/usb-acpi.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include "usb.h" @@ -188,8 +189,13 @@ static int usb_acpi_find_device(struct device *dev, acpi_handle *handle) * connected to. */ if (!udev->parent) { - *handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev), + struct usb_hcd *hcd = bus_to_hcd(udev->bus); + int raw_port_num; + + raw_port_num = usb_hcd_find_raw_port_number(hcd, port_num); + *handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev), + raw_port_num); if (!*handle) return -ENODEV; } else { -- cgit v1.1 From 1c11a172cb30492f5f6a82c6e118fdcd9946c34f Mon Sep 17 00:00:00 2001 From: Vivek Gautam Date: Thu, 21 Mar 2013 12:06:48 +0530 Subject: usb: xhci: Fix TRB transfer length macro used for Event TRB. Use proper macro while extracting TRB transfer length from Transfer event TRBs. Adding a macro EVENT_TRB_LEN (bits 0:23) for the same, and use it instead of TRB_LEN (bits 0:16) in case of event TRBs. This patch should be backported to kernels as old as 2.6.31, that contain the commit b10de142119a676552df3f0d2e3a9d647036c26a "USB: xhci: Bulk transfer support". This patch will have issues applying to older kernels. Signed-off-by: Vivek gautam Signed-off-by: Sarah Sharp Cc: stable@vger.kernel.org --- drivers/usb/host/xhci-ring.c | 24 ++++++++++++------------ drivers/usb/host/xhci.h | 4 ++++ 2 files changed, 16 insertions(+), 12 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index ec26819..9652dae 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2029,8 +2029,8 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, if (event_trb != ep_ring->dequeue && event_trb != td->last_trb) td->urb->actual_length = - td->urb->transfer_buffer_length - - TRB_LEN(le32_to_cpu(event->transfer_len)); + td->urb->transfer_buffer_length - + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); else td->urb->actual_length = 0; @@ -2062,7 +2062,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td, /* Maybe the event was for the data stage? */ td->urb->actual_length = td->urb->transfer_buffer_length - - TRB_LEN(le32_to_cpu(event->transfer_len)); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); xhci_dbg(xhci, "Waiting for status " "stage event\n"); return 0; @@ -2098,7 +2098,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, /* handle completion code */ switch (trb_comp_code) { case COMP_SUCCESS: - if (TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) { + if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) { frame->status = 0; break; } @@ -2143,7 +2143,7 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td, len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])); } len += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) - - TRB_LEN(le32_to_cpu(event->transfer_len)); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); if (trb_comp_code != COMP_STOP_INVAL) { frame->actual_length = len; @@ -2201,7 +2201,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td, case COMP_SUCCESS: /* Double check that the HW transferred everything. */ if (event_trb != td->last_trb || - TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { xhci_warn(xhci, "WARN Successful completion " "on short TX\n"); if (td->urb->transfer_flags & URB_SHORT_NOT_OK) @@ -2229,18 +2229,18 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td, "%d bytes untransferred\n", td->urb->ep->desc.bEndpointAddress, td->urb->transfer_buffer_length, - TRB_LEN(le32_to_cpu(event->transfer_len))); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len))); /* Fast path - was this the last TRB in the TD for this URB? */ if (event_trb == td->last_trb) { - if (TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { + if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) { td->urb->actual_length = td->urb->transfer_buffer_length - - TRB_LEN(le32_to_cpu(event->transfer_len)); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); if (td->urb->transfer_buffer_length < td->urb->actual_length) { xhci_warn(xhci, "HC gave bad length " "of %d bytes left\n", - TRB_LEN(le32_to_cpu(event->transfer_len))); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len))); td->urb->actual_length = 0; if (td->urb->transfer_flags & URB_SHORT_NOT_OK) *status = -EREMOTEIO; @@ -2282,7 +2282,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td, if (trb_comp_code != COMP_STOP_INVAL) td->urb->actual_length += TRB_LEN(le32_to_cpu(cur_trb->generic.field[2])) - - TRB_LEN(le32_to_cpu(event->transfer_len)); + EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)); } return finish_td(xhci, td, event_trb, event, ep, status, false); @@ -2370,7 +2370,7 @@ static int handle_tx_event(struct xhci_hcd *xhci, * transfer type */ case COMP_SUCCESS: - if (TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) + if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) == 0) break; if (xhci->quirks & XHCI_TRUST_TX_LENGTH) trb_comp_code = COMP_SHORT_TX; diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index d798b69..6358271 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -972,6 +972,10 @@ struct xhci_transfer_event { __le32 flags; }; +/* Transfer event TRB length bit mask */ +/* bits 0:23 */ +#define EVENT_TRB_LEN(p) ((p) & 0xffffff) + /** Transfer Event bit fields **/ #define TRB_TO_EP_ID(p) (((p) >> 16) & 0x1f) -- cgit v1.1 From a83d6755814e4614ba77e15d82796af0f695c6b8 Mon Sep 17 00:00:00 2001 From: Sarah Sharp Date: Mon, 18 Mar 2013 10:19:51 -0700 Subject: xhci: Don't warn on empty ring for suspended devices. When a device attached to the roothub is suspended, the endpoint rings are stopped. The host may generate a completion event with the completion code set to 'Stopped' or 'Stopped Invalid' when the ring is halted. The current xHCI code prints a warning in that case, which can be really annoying if the USB device is coming into and out of suspend. Remove the unnecessary warning. Signed-off-by: Sarah Sharp Tested-by: Stephen Hemminger --- drivers/usb/host/xhci-ring.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 9652dae..1969c00 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2463,14 +2463,21 @@ static int handle_tx_event(struct xhci_hcd *xhci, * TD list. */ if (list_empty(&ep_ring->td_list)) { - xhci_warn(xhci, "WARN Event TRB for slot %d ep %d " - "with no TDs queued?\n", - TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), - ep_index); - xhci_dbg(xhci, "Event TRB with TRB type ID %u\n", - (le32_to_cpu(event->flags) & - TRB_TYPE_BITMASK)>>10); - xhci_print_trb_offsets(xhci, (union xhci_trb *) event); + /* + * A stopped endpoint may generate an extra completion + * event if the device was suspended. Don't print + * warnings. + */ + if (!(trb_comp_code == COMP_STOP || + trb_comp_code == COMP_STOP_INVAL)) { + xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", + TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), + ep_index); + xhci_dbg(xhci, "Event TRB with TRB type ID %u\n", + (le32_to_cpu(event->flags) & + TRB_TYPE_BITMASK)>>10); + xhci_print_trb_offsets(xhci, (union xhci_trb *) event); + } if (ep->skip) { ep->skip = false; xhci_dbg(xhci, "td_list is empty while skip " -- cgit v1.1 From a79ca223e029aa4f09abb337accf1812c900a800 Mon Sep 17 00:00:00 2001 From: Hong Zhiguo Date: Tue, 26 Mar 2013 01:52:45 +0800 Subject: ipv6: fix bad free of addrconf_init_net Signed-off-by: Hong Zhiguo Signed-off-by: David S. Miller --- net/ipv6/addrconf.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f2c7e61..26512250 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -4784,26 +4784,20 @@ static void addrconf_sysctl_unregister(struct inet6_dev *idev) static int __net_init addrconf_init_net(struct net *net) { - int err; + int err = -ENOMEM; struct ipv6_devconf *all, *dflt; - err = -ENOMEM; - all = &ipv6_devconf; - dflt = &ipv6_devconf_dflt; + all = kmemdup(&ipv6_devconf, sizeof(ipv6_devconf), GFP_KERNEL); + if (all == NULL) + goto err_alloc_all; - if (!net_eq(net, &init_net)) { - all = kmemdup(all, sizeof(ipv6_devconf), GFP_KERNEL); - if (all == NULL) - goto err_alloc_all; + dflt = kmemdup(&ipv6_devconf_dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); + if (dflt == NULL) + goto err_alloc_dflt; - dflt = kmemdup(dflt, sizeof(ipv6_devconf_dflt), GFP_KERNEL); - if (dflt == NULL) - goto err_alloc_dflt; - } else { - /* these will be inherited by all namespaces */ - dflt->autoconf = ipv6_defaults.autoconf; - dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; - } + /* these will be inherited by all namespaces */ + dflt->autoconf = ipv6_defaults.autoconf; + dflt->disable_ipv6 = ipv6_defaults.disable_ipv6; net->ipv6.devconf_all = all; net->ipv6.devconf_dflt = dflt; -- cgit v1.1 From d17cfb34dc5eb527b98448f3999aac52311d438b Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 22 Mar 2013 21:47:51 +0000 Subject: ARM64: early_printk: Fix check for CONFIG_ARM64_64K_PAGES The 'CONFIG_' prefix is not implicit in IS_ENABLED(). Signed-off-by: Ben Hutchings Cc: Arnd Bergmann Cc: Paul Bolle Signed-off-by: Catalin Marinas --- arch/arm64/mm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 224b44a..70b8cd4 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -261,7 +261,7 @@ static void __init create_mapping(phys_addr_t phys, unsigned long virt, void __iomem * __init early_io_map(phys_addr_t phys, unsigned long virt) { unsigned long size, mask; - bool page64k = IS_ENABLED(ARM64_64K_PAGES); + bool page64k = IS_ENABLED(CONFIG_ARM64_64K_PAGES); pgd_t *pgd; pud_t *pud; pmd_t *pmd; -- cgit v1.1 From 532ee00c4459086840eb35cc9c198bf580420aeb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 25 Mar 2013 12:24:35 -0300 Subject: [media] fix compilation with both V4L2 and I2C as 'm' When config options are: CONFIG_VIDEO_DEV=y CONFIG_VIDEO_V4L2=m CONFIG_I2C=m Compilation breaks, as reported by: https://bugzilla.kernel.org/show_bug.cgi?id=55681 Before changeset 7b34be71db533f3e0cf93d53cf62d036cdb5418a, no compilation errors occurred. However, the I2C code there at v4l2-device was incorrectly disabled. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/Makefile b/drivers/media/v4l2-core/Makefile index a9d3552..768aaf6 100644 --- a/drivers/media/v4l2-core/Makefile +++ b/drivers/media/v4l2-core/Makefile @@ -10,7 +10,7 @@ ifeq ($(CONFIG_COMPAT),y) videodev-objs += v4l2-compat-ioctl32.o endif -obj-$(CONFIG_VIDEO_DEV) += videodev.o +obj-$(CONFIG_VIDEO_V4L2) += videodev.o obj-$(CONFIG_VIDEO_V4L2_INT_DEVICE) += v4l2-int-device.o obj-$(CONFIG_VIDEO_V4L2) += v4l2-common.o -- cgit v1.1 From e4317ce877a31dbb9d96375391c1c4ad2210d637 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Fri, 22 Mar 2013 15:16:29 +0000 Subject: staging: comedi: s626: fix continuous acquisition For the s626 driver, there is a bug in the handling of asynchronous commands on the AI subdevice when the stop source is `TRIG_NONE`. The command should run continuously until cancelled, but the interrupt handler stops the command running after the first scan. The command set-up function `s626_ai_cmd()` contains this code: switch (cmd->stop_src) { case TRIG_COUNT: /* data arrives as one packet */ devpriv->ai_sample_count = cmd->stop_arg; devpriv->ai_continous = 0; break; case TRIG_NONE: /* continous acquisition */ devpriv->ai_continous = 1; devpriv->ai_sample_count = 0; break; } The interrupt handler `s626_irq_handler()` contains this code: if (!(devpriv->ai_continous)) devpriv->ai_sample_count--; if (devpriv->ai_sample_count <= 0) { devpriv->ai_cmd_running = 0; /* ... */ } So `devpriv->ai_sample_count` is only decremented for the `TRIG_COUNT` case, but `devpriv->ai_cmd_running` is set to 0 (and the command stopped) regardless. Fix this in `s626_ai_cmd()` by setting `devpriv->ai_sample_count = 1` for the `TRIG_NONE` case. The interrupt handler will not decrement it so it will remain greater than 0 and the check for stopping the acquisition will fail. Cc: stable Signed-off-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/s626.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/comedi/drivers/s626.c b/drivers/staging/comedi/drivers/s626.c index 81a1fe6..71a73ec 100644 --- a/drivers/staging/comedi/drivers/s626.c +++ b/drivers/staging/comedi/drivers/s626.c @@ -1483,7 +1483,7 @@ static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) case TRIG_NONE: /* continous acquisition */ devpriv->ai_continous = 1; - devpriv->ai_sample_count = 0; + devpriv->ai_sample_count = 1; break; } -- cgit v1.1 From 85ecd0322b9a1a9f451d9150e9460ab42fd17219 Mon Sep 17 00:00:00 2001 From: Soeren Moch Date: Fri, 22 Mar 2013 12:16:52 -0400 Subject: USB: EHCI: fix bug in iTD/siTD DMA pool allocation [Description written by Alan Stern] Soeren tracked down a very difficult bug in ehci-hcd's DMA pool management of iTD and siTD structures. Some background: ehci-hcd gives each isochronous endpoint its own set of active and free itd's (or sitd's for full-speed devices). When a new itd is needed, it is taken from the head of the free list, if possible. However, itd's must not be used twice in a single frame because the hardware continues to access the data structure for the entire duration of a frame. Therefore if the itd at the head of the free list has its "frame" member equal to the current value of ehci->now_frame, it cannot be reused and instead a new itd is allocated from the DMA pool. The entries on the free list are not released back to the pool until the endpoint is no longer in use. The bug arises from the fact that sometimes an itd can be moved back onto the free list before itd->frame has been set properly. In Soeren's case, this happened because ehci-hcd can allocate one more itd than it actually needs for an URB; the extra itd may or may not be required depending on how the transfer aligns with a frame boundary. For example, an URB with 8 isochronous packets will cause two itd's to be allocated. If the URB is scheduled to start in microframe 3 of frame N then it will require both itds: one for microframes 3 - 7 of frame N and one for microframes 0 - 2 of frame N+1. But if the URB had been scheduled to start in microframe 0 then it would require only the first itd, which could cover microframes 0 - 7 of frame N. The second itd would be returned to the end of the free list. The itd allocation routine initializes the entire structure to 0, so the extra itd ends up on the free list with itd->frame set to 0 instead of a meaningful value. After a while the itd reaches the head of the list, and occasionally this happens when ehci->now_frame is equal to 0. Then, even though it would be okay to reuse this itd, the driver thinks it must get another itd from the DMA pool. For as long as the isochronous endpoint remains in use, this flaw in the mechanism causes more and more itd's to be taken slowly from the DMA pool. Since none are released back, the pool eventually becomes exhausted. This reuslts in memory allocation failures, which typically show up during a long-running audio stream. Video might suffer the same effect. The fix is very simple. To prevent allocations from the pool when they aren't needed, make sure that itd's sent back to the free list prematurely have itd->frame set to an invalid value which can never be equal to ehci->now_frame. This should be applied to -stable kernels going back to 3.6. Signed-off-by: Soeren Moch Signed-off-by: Alan Stern Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-sched.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index b476daf..010f686 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1214,6 +1214,7 @@ itd_urb_transaction ( memset (itd, 0, sizeof *itd); itd->itd_dma = itd_dma; + itd->frame = 9999; /* an invalid value */ list_add (&itd->itd_list, &sched->td_list); } spin_unlock_irqrestore (&ehci->lock, flags); @@ -1915,6 +1916,7 @@ sitd_urb_transaction ( memset (sitd, 0, sizeof *sitd); sitd->sitd_dma = sitd_dma; + sitd->frame = 9999; /* an invalid value */ list_add (&sitd->sitd_list, &iso_sched->td_list); } -- cgit v1.1 From f9294e989fa6f2990da155242db03cea1550cac8 Mon Sep 17 00:00:00 2001 From: Stuart Yoder Date: Fri, 22 Mar 2013 09:12:13 +0000 Subject: powerpc: define the conditions where the ePAPR idle hcall can be supported For 32-bit, CONFIG_EPAPR_PARAVIRT pulls in both epapr_paravirt.c and epapr_hcalls.c which contains the 32-bit paravirt idle loop. For 64-bit, the paravirt idle loop is in idle_book3e.S and that source file is included only if CONFIG_PPC_BOOK3E_64 defined. This patch makes that dependency for 64-bit explicit. Fixes these build errors: arch/powerpc/kernel/built-in.o: In function `restore_pblist_ptr': ftrace.c:(.toc+0xdc0): undefined reference to `epapr_ev_idle_start' ftrace.c:(.toc+0xdd0): undefined reference to `epapr_ev_idle' Signed-off-by: Stuart Yoder Signed-off-by: Stephen Rothwell --- arch/powerpc/kernel/epapr_paravirt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/powerpc/kernel/epapr_paravirt.c b/arch/powerpc/kernel/epapr_paravirt.c index f3eab85..d44a571 100644 --- a/arch/powerpc/kernel/epapr_paravirt.c +++ b/arch/powerpc/kernel/epapr_paravirt.c @@ -23,8 +23,10 @@ #include #include +#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64) extern void epapr_ev_idle(void); extern u32 epapr_ev_idle_start[]; +#endif bool epapr_paravirt_enabled; @@ -47,11 +49,15 @@ static int __init epapr_paravirt_init(void) for (i = 0; i < (len / 4); i++) { patch_instruction(epapr_hypercall_start + i, insts[i]); +#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64) patch_instruction(epapr_ev_idle_start + i, insts[i]); +#endif } +#if !defined(CONFIG_64BIT) || defined(CONFIG_PPC_BOOK3E_64) if (of_get_property(hyper_node, "has-idle", NULL)) ppc_md.power_save = epapr_ev_idle; +#endif epapr_paravirt_enabled = true; -- cgit v1.1 From 9196d8acd7f91758872108958dfded7684628444 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 19 Mar 2013 11:34:56 +0100 Subject: TTY: 8250, revert module name change In 3.7 the 8250 module name was changed unintentionally from 8250 to 8250_core by commit 835d844d1a28efba81d5aca7385e24c29d3a6db2 (8250_pnp: do pnp probe before legacy probe). We then had to re-introduce the old module options to ensure the old good 8250.nr_uart & co. still work. This can be done only by a very dirty hack and we did it in f2b8dfd9e480c3db3bad0c25c590a5d11b31f4ef (serial: 8250: Keep 8250. module options functional after driver rename). That is so damn ugly so that I decided to revert to the old module name and deprecate the new 8250_core options present in 3.7 and 3.8 only. The deprecation will happen in the following patch. Note that this patch changes the hack above to support "8250_core.*", because we now have "8250.*" natively. Signed-off-by: Jiri Slaby Cc: Josh Boyer Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250.c | 3448 ----------------------------------- drivers/tty/serial/8250/8250_core.c | 3448 +++++++++++++++++++++++++++++++++++ drivers/tty/serial/8250/Makefile | 8 +- 3 files changed, 3452 insertions(+), 3452 deletions(-) delete mode 100644 drivers/tty/serial/8250/8250.c create mode 100644 drivers/tty/serial/8250/8250_core.c diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c deleted file mode 100644 index cf6a538..0000000 --- a/drivers/tty/serial/8250/8250.c +++ /dev/null @@ -1,3448 +0,0 @@ -/* - * Driver for 8250/16550-type serial ports - * - * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. - * - * Copyright (C) 2001 Russell King. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * A note about mapbase / membase - * - * mapbase is the physical address of the IO port. - * membase is an 'ioremapped' cookie. - */ - -#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#ifdef CONFIG_SPARC -#include -#endif - -#include -#include - -#include "8250.h" - -/* - * Configuration: - * share_irqs - whether we pass IRQF_SHARED to request_irq(). This option - * is unsafe when used on edge-triggered interrupts. - */ -static unsigned int share_irqs = SERIAL8250_SHARE_IRQS; - -static unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS; - -static struct uart_driver serial8250_reg; - -static int serial_index(struct uart_port *port) -{ - return (serial8250_reg.minor - 64) + port->line; -} - -static unsigned int skip_txen_test; /* force skip of txen test at init time */ - -/* - * Debugging. - */ -#if 0 -#define DEBUG_AUTOCONF(fmt...) printk(fmt) -#else -#define DEBUG_AUTOCONF(fmt...) do { } while (0) -#endif - -#if 0 -#define DEBUG_INTR(fmt...) printk(fmt) -#else -#define DEBUG_INTR(fmt...) do { } while (0) -#endif - -#define PASS_LIMIT 512 - -#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) - - -#ifdef CONFIG_SERIAL_8250_DETECT_IRQ -#define CONFIG_SERIAL_DETECT_IRQ 1 -#endif -#ifdef CONFIG_SERIAL_8250_MANY_PORTS -#define CONFIG_SERIAL_MANY_PORTS 1 -#endif - -/* - * HUB6 is always on. This will be removed once the header - * files have been cleaned. - */ -#define CONFIG_HUB6 1 - -#include -/* - * SERIAL_PORT_DFNS tells us about built-in ports that have no - * standard enumeration mechanism. Platforms that can find all - * serial ports via mechanisms like ACPI or PCI need not supply it. - */ -#ifndef SERIAL_PORT_DFNS -#define SERIAL_PORT_DFNS -#endif - -static const struct old_serial_port old_serial_port[] = { - SERIAL_PORT_DFNS /* defined in asm/serial.h */ -}; - -#define UART_NR CONFIG_SERIAL_8250_NR_UARTS - -#ifdef CONFIG_SERIAL_8250_RSA - -#define PORT_RSA_MAX 4 -static unsigned long probe_rsa[PORT_RSA_MAX]; -static unsigned int probe_rsa_count; -#endif /* CONFIG_SERIAL_8250_RSA */ - -struct irq_info { - struct hlist_node node; - int irq; - spinlock_t lock; /* Protects list not the hash */ - struct list_head *head; -}; - -#define NR_IRQ_HASH 32 /* Can be adjusted later */ -static struct hlist_head irq_lists[NR_IRQ_HASH]; -static DEFINE_MUTEX(hash_mutex); /* Used to walk the hash */ - -/* - * Here we define the default xmit fifo size used for each type of UART. - */ -static const struct serial8250_config uart_config[] = { - [PORT_UNKNOWN] = { - .name = "unknown", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_8250] = { - .name = "8250", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_16450] = { - .name = "16450", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_16550] = { - .name = "16550", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_16550A] = { - .name = "16550A", - .fifo_size = 16, - .tx_loadsz = 16, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO, - }, - [PORT_CIRRUS] = { - .name = "Cirrus", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_16650] = { - .name = "ST16650", - .fifo_size = 1, - .tx_loadsz = 1, - .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, - }, - [PORT_16650V2] = { - .name = "ST16650V2", - .fifo_size = 32, - .tx_loadsz = 16, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | - UART_FCR_T_TRIG_00, - .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, - }, - [PORT_16750] = { - .name = "TI16750", - .fifo_size = 64, - .tx_loadsz = 64, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10 | - UART_FCR7_64BYTE, - .flags = UART_CAP_FIFO | UART_CAP_SLEEP | UART_CAP_AFE, - }, - [PORT_STARTECH] = { - .name = "Startech", - .fifo_size = 1, - .tx_loadsz = 1, - }, - [PORT_16C950] = { - .name = "16C950/954", - .fifo_size = 128, - .tx_loadsz = 128, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - /* UART_CAP_EFR breaks billionon CF bluetooth card. */ - .flags = UART_CAP_FIFO | UART_CAP_SLEEP, - }, - [PORT_16654] = { - .name = "ST16654", - .fifo_size = 64, - .tx_loadsz = 32, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | - UART_FCR_T_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, - }, - [PORT_16850] = { - .name = "XR16850", - .fifo_size = 128, - .tx_loadsz = 128, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, - }, - [PORT_RSA] = { - .name = "RSA", - .fifo_size = 2048, - .tx_loadsz = 2048, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_11, - .flags = UART_CAP_FIFO, - }, - [PORT_NS16550A] = { - .name = "NS16550A", - .fifo_size = 16, - .tx_loadsz = 16, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_NATSEMI, - }, - [PORT_XSCALE] = { - .name = "XScale", - .fifo_size = 32, - .tx_loadsz = 32, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_UUE | UART_CAP_RTOIE, - }, - [PORT_OCTEON] = { - .name = "OCTEON", - .fifo_size = 64, - .tx_loadsz = 64, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO, - }, - [PORT_AR7] = { - .name = "AR7", - .fifo_size = 16, - .tx_loadsz = 16, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00, - .flags = UART_CAP_FIFO | UART_CAP_AFE, - }, - [PORT_U6_16550A] = { - .name = "U6_16550A", - .fifo_size = 64, - .tx_loadsz = 64, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_AFE, - }, - [PORT_TEGRA] = { - .name = "Tegra", - .fifo_size = 32, - .tx_loadsz = 8, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | - UART_FCR_T_TRIG_01, - .flags = UART_CAP_FIFO | UART_CAP_RTOIE, - }, - [PORT_XR17D15X] = { - .name = "XR17D15X", - .fifo_size = 64, - .tx_loadsz = 64, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_AFE | UART_CAP_EFR | - UART_CAP_SLEEP, - }, - [PORT_XR17V35X] = { - .name = "XR17V35X", - .fifo_size = 256, - .tx_loadsz = 256, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_11 | - UART_FCR_T_TRIG_11, - .flags = UART_CAP_FIFO | UART_CAP_AFE | UART_CAP_EFR | - UART_CAP_SLEEP, - }, - [PORT_LPC3220] = { - .name = "LPC3220", - .fifo_size = 64, - .tx_loadsz = 32, - .fcr = UART_FCR_DMA_SELECT | UART_FCR_ENABLE_FIFO | - UART_FCR_R_TRIG_00 | UART_FCR_T_TRIG_00, - .flags = UART_CAP_FIFO, - }, - [PORT_BRCM_TRUMANAGE] = { - .name = "TruManage", - .fifo_size = 1, - .tx_loadsz = 1024, - .flags = UART_CAP_HFIFO, - }, - [PORT_8250_CIR] = { - .name = "CIR port" - }, - [PORT_ALTR_16550_F32] = { - .name = "Altera 16550 FIFO32", - .fifo_size = 32, - .tx_loadsz = 32, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_AFE, - }, - [PORT_ALTR_16550_F64] = { - .name = "Altera 16550 FIFO64", - .fifo_size = 64, - .tx_loadsz = 64, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_AFE, - }, - [PORT_ALTR_16550_F128] = { - .name = "Altera 16550 FIFO128", - .fifo_size = 128, - .tx_loadsz = 128, - .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, - .flags = UART_CAP_FIFO | UART_CAP_AFE, - }, -}; - -/* Uart divisor latch read */ -static int default_serial_dl_read(struct uart_8250_port *up) -{ - return serial_in(up, UART_DLL) | serial_in(up, UART_DLM) << 8; -} - -/* Uart divisor latch write */ -static void default_serial_dl_write(struct uart_8250_port *up, int value) -{ - serial_out(up, UART_DLL, value & 0xff); - serial_out(up, UART_DLM, value >> 8 & 0xff); -} - -#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) - -/* Au1x00/RT288x UART hardware has a weird register layout */ -static const u8 au_io_in_map[] = { - [UART_RX] = 0, - [UART_IER] = 2, - [UART_IIR] = 3, - [UART_LCR] = 5, - [UART_MCR] = 6, - [UART_LSR] = 7, - [UART_MSR] = 8, -}; - -static const u8 au_io_out_map[] = { - [UART_TX] = 1, - [UART_IER] = 2, - [UART_FCR] = 4, - [UART_LCR] = 5, - [UART_MCR] = 6, -}; - -static unsigned int au_serial_in(struct uart_port *p, int offset) -{ - offset = au_io_in_map[offset] << p->regshift; - return __raw_readl(p->membase + offset); -} - -static void au_serial_out(struct uart_port *p, int offset, int value) -{ - offset = au_io_out_map[offset] << p->regshift; - __raw_writel(value, p->membase + offset); -} - -/* Au1x00 haven't got a standard divisor latch */ -static int au_serial_dl_read(struct uart_8250_port *up) -{ - return __raw_readl(up->port.membase + 0x28); -} - -static void au_serial_dl_write(struct uart_8250_port *up, int value) -{ - __raw_writel(value, up->port.membase + 0x28); -} - -#endif - -static unsigned int hub6_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - outb(p->hub6 - 1 + offset, p->iobase); - return inb(p->iobase + 1); -} - -static void hub6_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - outb(p->hub6 - 1 + offset, p->iobase); - outb(value, p->iobase + 1); -} - -static unsigned int mem_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - return readb(p->membase + offset); -} - -static void mem_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - writeb(value, p->membase + offset); -} - -static void mem32_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - writel(value, p->membase + offset); -} - -static unsigned int mem32_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - return readl(p->membase + offset); -} - -static unsigned int io_serial_in(struct uart_port *p, int offset) -{ - offset = offset << p->regshift; - return inb(p->iobase + offset); -} - -static void io_serial_out(struct uart_port *p, int offset, int value) -{ - offset = offset << p->regshift; - outb(value, p->iobase + offset); -} - -static int serial8250_default_handle_irq(struct uart_port *port); -static int exar_handle_irq(struct uart_port *port); - -static void set_io_from_upio(struct uart_port *p) -{ - struct uart_8250_port *up = - container_of(p, struct uart_8250_port, port); - - up->dl_read = default_serial_dl_read; - up->dl_write = default_serial_dl_write; - - switch (p->iotype) { - case UPIO_HUB6: - p->serial_in = hub6_serial_in; - p->serial_out = hub6_serial_out; - break; - - case UPIO_MEM: - p->serial_in = mem_serial_in; - p->serial_out = mem_serial_out; - break; - - case UPIO_MEM32: - p->serial_in = mem32_serial_in; - p->serial_out = mem32_serial_out; - break; - -#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) - case UPIO_AU: - p->serial_in = au_serial_in; - p->serial_out = au_serial_out; - up->dl_read = au_serial_dl_read; - up->dl_write = au_serial_dl_write; - break; -#endif - - default: - p->serial_in = io_serial_in; - p->serial_out = io_serial_out; - break; - } - /* Remember loaded iotype */ - up->cur_iotype = p->iotype; - p->handle_irq = serial8250_default_handle_irq; -} - -static void -serial_port_out_sync(struct uart_port *p, int offset, int value) -{ - switch (p->iotype) { - case UPIO_MEM: - case UPIO_MEM32: - case UPIO_AU: - p->serial_out(p, offset, value); - p->serial_in(p, UART_LCR); /* safe, no side-effects */ - break; - default: - p->serial_out(p, offset, value); - } -} - -/* - * For the 16C950 - */ -static void serial_icr_write(struct uart_8250_port *up, int offset, int value) -{ - serial_out(up, UART_SCR, offset); - serial_out(up, UART_ICR, value); -} - -static unsigned int serial_icr_read(struct uart_8250_port *up, int offset) -{ - unsigned int value; - - serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD); - serial_out(up, UART_SCR, offset); - value = serial_in(up, UART_ICR); - serial_icr_write(up, UART_ACR, up->acr); - - return value; -} - -/* - * FIFO support. - */ -static void serial8250_clear_fifos(struct uart_8250_port *p) -{ - if (p->capabilities & UART_CAP_FIFO) { - serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO); - serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); - serial_out(p, UART_FCR, 0); - } -} - -void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p) -{ - unsigned char fcr; - - serial8250_clear_fifos(p); - fcr = uart_config[p->port.type].fcr; - serial_out(p, UART_FCR, fcr); -} -EXPORT_SYMBOL_GPL(serial8250_clear_and_reinit_fifos); - -/* - * IER sleep support. UARTs which have EFRs need the "extended - * capability" bit enabled. Note that on XR16C850s, we need to - * reset LCR to write to IER. - */ -static void serial8250_set_sleep(struct uart_8250_port *p, int sleep) -{ - /* - * Exar UARTs have a SLEEP register that enables or disables - * each UART to enter sleep mode separately. On the XR17V35x the - * register is accessible to each UART at the UART_EXAR_SLEEP - * offset but the UART channel may only write to the corresponding - * bit. - */ - if ((p->port.type == PORT_XR17V35X) || - (p->port.type == PORT_XR17D15X)) { - serial_out(p, UART_EXAR_SLEEP, 0xff); - return; - } - - if (p->capabilities & UART_CAP_SLEEP) { - if (p->capabilities & UART_CAP_EFR) { - serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(p, UART_EFR, UART_EFR_ECB); - serial_out(p, UART_LCR, 0); - } - serial_out(p, UART_IER, sleep ? UART_IERX_SLEEP : 0); - if (p->capabilities & UART_CAP_EFR) { - serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(p, UART_EFR, 0); - serial_out(p, UART_LCR, 0); - } - } -} - -#ifdef CONFIG_SERIAL_8250_RSA -/* - * Attempts to turn on the RSA FIFO. Returns zero on failure. - * We set the port uart clock rate if we succeed. - */ -static int __enable_rsa(struct uart_8250_port *up) -{ - unsigned char mode; - int result; - - mode = serial_in(up, UART_RSA_MSR); - result = mode & UART_RSA_MSR_FIFO; - - if (!result) { - serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO); - mode = serial_in(up, UART_RSA_MSR); - result = mode & UART_RSA_MSR_FIFO; - } - - if (result) - up->port.uartclk = SERIAL_RSA_BAUD_BASE * 16; - - return result; -} - -static void enable_rsa(struct uart_8250_port *up) -{ - if (up->port.type == PORT_RSA) { - if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) { - spin_lock_irq(&up->port.lock); - __enable_rsa(up); - spin_unlock_irq(&up->port.lock); - } - if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) - serial_out(up, UART_RSA_FRR, 0); - } -} - -/* - * Attempts to turn off the RSA FIFO. Returns zero on failure. - * It is unknown why interrupts were disabled in here. However, - * the caller is expected to preserve this behaviour by grabbing - * the spinlock before calling this function. - */ -static void disable_rsa(struct uart_8250_port *up) -{ - unsigned char mode; - int result; - - if (up->port.type == PORT_RSA && - up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) { - spin_lock_irq(&up->port.lock); - - mode = serial_in(up, UART_RSA_MSR); - result = !(mode & UART_RSA_MSR_FIFO); - - if (!result) { - serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO); - mode = serial_in(up, UART_RSA_MSR); - result = !(mode & UART_RSA_MSR_FIFO); - } - - if (result) - up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16; - spin_unlock_irq(&up->port.lock); - } -} -#endif /* CONFIG_SERIAL_8250_RSA */ - -/* - * This is a quickie test to see how big the FIFO is. - * It doesn't work at all the time, more's the pity. - */ -static int size_fifo(struct uart_8250_port *up) -{ - unsigned char old_fcr, old_mcr, old_lcr; - unsigned short old_dl; - int count; - - old_lcr = serial_in(up, UART_LCR); - serial_out(up, UART_LCR, 0); - old_fcr = serial_in(up, UART_FCR); - old_mcr = serial_in(up, UART_MCR); - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | - UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); - serial_out(up, UART_MCR, UART_MCR_LOOP); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - old_dl = serial_dl_read(up); - serial_dl_write(up, 0x0001); - serial_out(up, UART_LCR, 0x03); - for (count = 0; count < 256; count++) - serial_out(up, UART_TX, count); - mdelay(20);/* FIXME - schedule_timeout */ - for (count = 0; (serial_in(up, UART_LSR) & UART_LSR_DR) && - (count < 256); count++) - serial_in(up, UART_RX); - serial_out(up, UART_FCR, old_fcr); - serial_out(up, UART_MCR, old_mcr); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - serial_dl_write(up, old_dl); - serial_out(up, UART_LCR, old_lcr); - - return count; -} - -/* - * Read UART ID using the divisor method - set DLL and DLM to zero - * and the revision will be in DLL and device type in DLM. We - * preserve the device state across this. - */ -static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p) -{ - unsigned char old_dll, old_dlm, old_lcr; - unsigned int id; - - old_lcr = serial_in(p, UART_LCR); - serial_out(p, UART_LCR, UART_LCR_CONF_MODE_A); - - old_dll = serial_in(p, UART_DLL); - old_dlm = serial_in(p, UART_DLM); - - serial_out(p, UART_DLL, 0); - serial_out(p, UART_DLM, 0); - - id = serial_in(p, UART_DLL) | serial_in(p, UART_DLM) << 8; - - serial_out(p, UART_DLL, old_dll); - serial_out(p, UART_DLM, old_dlm); - serial_out(p, UART_LCR, old_lcr); - - return id; -} - -/* - * This is a helper routine to autodetect StarTech/Exar/Oxsemi UART's. - * When this function is called we know it is at least a StarTech - * 16650 V2, but it might be one of several StarTech UARTs, or one of - * its clones. (We treat the broken original StarTech 16650 V1 as a - * 16550, and why not? Startech doesn't seem to even acknowledge its - * existence.) - * - * What evil have men's minds wrought... - */ -static void autoconfig_has_efr(struct uart_8250_port *up) -{ - unsigned int id1, id2, id3, rev; - - /* - * Everything with an EFR has SLEEP - */ - up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; - - /* - * First we check to see if it's an Oxford Semiconductor UART. - * - * If we have to do this here because some non-National - * Semiconductor clone chips lock up if you try writing to the - * LSR register (which serial_icr_read does) - */ - - /* - * Check for Oxford Semiconductor 16C950. - * - * EFR [4] must be set else this test fails. - * - * This shouldn't be necessary, but Mike Hudson (Exoray@isys.ca) - * claims that it's needed for 952 dual UART's (which are not - * recommended for new designs). - */ - up->acr = 0; - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(up, UART_EFR, UART_EFR_ECB); - serial_out(up, UART_LCR, 0x00); - id1 = serial_icr_read(up, UART_ID1); - id2 = serial_icr_read(up, UART_ID2); - id3 = serial_icr_read(up, UART_ID3); - rev = serial_icr_read(up, UART_REV); - - DEBUG_AUTOCONF("950id=%02x:%02x:%02x:%02x ", id1, id2, id3, rev); - - if (id1 == 0x16 && id2 == 0xC9 && - (id3 == 0x50 || id3 == 0x52 || id3 == 0x54)) { - up->port.type = PORT_16C950; - - /* - * Enable work around for the Oxford Semiconductor 952 rev B - * chip which causes it to seriously miscalculate baud rates - * when DLL is 0. - */ - if (id3 == 0x52 && rev == 0x01) - up->bugs |= UART_BUG_QUOT; - return; - } - - /* - * We check for a XR16C850 by setting DLL and DLM to 0, and then - * reading back DLL and DLM. The chip type depends on the DLM - * value read back: - * 0x10 - XR16C850 and the DLL contains the chip revision. - * 0x12 - XR16C2850. - * 0x14 - XR16C854. - */ - id1 = autoconfig_read_divisor_id(up); - DEBUG_AUTOCONF("850id=%04x ", id1); - - id2 = id1 >> 8; - if (id2 == 0x10 || id2 == 0x12 || id2 == 0x14) { - up->port.type = PORT_16850; - return; - } - - /* - * It wasn't an XR16C850. - * - * We distinguish between the '654 and the '650 by counting - * how many bytes are in the FIFO. I'm using this for now, - * since that's the technique that was sent to me in the - * serial driver update, but I'm not convinced this works. - * I've had problems doing this in the past. -TYT - */ - if (size_fifo(up) == 64) - up->port.type = PORT_16654; - else - up->port.type = PORT_16650V2; -} - -/* - * We detected a chip without a FIFO. Only two fall into - * this category - the original 8250 and the 16450. The - * 16450 has a scratch register (accessible with LCR=0) - */ -static void autoconfig_8250(struct uart_8250_port *up) -{ - unsigned char scratch, status1, status2; - - up->port.type = PORT_8250; - - scratch = serial_in(up, UART_SCR); - serial_out(up, UART_SCR, 0xa5); - status1 = serial_in(up, UART_SCR); - serial_out(up, UART_SCR, 0x5a); - status2 = serial_in(up, UART_SCR); - serial_out(up, UART_SCR, scratch); - - if (status1 == 0xa5 && status2 == 0x5a) - up->port.type = PORT_16450; -} - -static int broken_efr(struct uart_8250_port *up) -{ - /* - * Exar ST16C2550 "A2" devices incorrectly detect as - * having an EFR, and report an ID of 0x0201. See - * http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-11/4812.html - */ - if (autoconfig_read_divisor_id(up) == 0x0201 && size_fifo(up) == 16) - return 1; - - return 0; -} - -static inline int ns16550a_goto_highspeed(struct uart_8250_port *up) -{ - unsigned char status; - - status = serial_in(up, 0x04); /* EXCR2 */ -#define PRESL(x) ((x) & 0x30) - if (PRESL(status) == 0x10) { - /* already in high speed mode */ - return 0; - } else { - status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */ - status |= 0x10; /* 1.625 divisor for baud_base --> 921600 */ - serial_out(up, 0x04, status); - } - return 1; -} - -/* - * We know that the chip has FIFOs. Does it have an EFR? The - * EFR is located in the same register position as the IIR and - * we know the top two bits of the IIR are currently set. The - * EFR should contain zero. Try to read the EFR. - */ -static void autoconfig_16550a(struct uart_8250_port *up) -{ - unsigned char status1, status2; - unsigned int iersave; - - up->port.type = PORT_16550A; - up->capabilities |= UART_CAP_FIFO; - - /* - * XR17V35x UARTs have an extra divisor register, DLD - * that gets enabled with when DLAB is set which will - * cause the device to incorrectly match and assign - * port type to PORT_16650. The EFR for this UART is - * found at offset 0x09. Instead check the Deice ID (DVID) - * register for a 2, 4 or 8 port UART. - */ - if (up->port.flags & UPF_EXAR_EFR) { - status1 = serial_in(up, UART_EXAR_DVID); - if (status1 == 0x82 || status1 == 0x84 || status1 == 0x88) { - DEBUG_AUTOCONF("Exar XR17V35x "); - up->port.type = PORT_XR17V35X; - up->capabilities |= UART_CAP_AFE | UART_CAP_EFR | - UART_CAP_SLEEP; - - return; - } - - } - - /* - * Check for presence of the EFR when DLAB is set. - * Only ST16C650V1 UARTs pass this test. - */ - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - if (serial_in(up, UART_EFR) == 0) { - serial_out(up, UART_EFR, 0xA8); - if (serial_in(up, UART_EFR) != 0) { - DEBUG_AUTOCONF("EFRv1 "); - up->port.type = PORT_16650; - up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; - } else { - DEBUG_AUTOCONF("Motorola 8xxx DUART "); - } - serial_out(up, UART_EFR, 0); - return; - } - - /* - * Maybe it requires 0xbf to be written to the LCR. - * (other ST16C650V2 UARTs, TI16C752A, etc) - */ - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) { - DEBUG_AUTOCONF("EFRv2 "); - autoconfig_has_efr(up); - return; - } - - /* - * Check for a National Semiconductor SuperIO chip. - * Attempt to switch to bank 2, read the value of the LOOP bit - * from EXCR1. Switch back to bank 0, change it in MCR. Then - * switch back to bank 2, read it from EXCR1 again and check - * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2 - */ - serial_out(up, UART_LCR, 0); - status1 = serial_in(up, UART_MCR); - serial_out(up, UART_LCR, 0xE0); - status2 = serial_in(up, 0x02); /* EXCR1 */ - - if (!((status2 ^ status1) & UART_MCR_LOOP)) { - serial_out(up, UART_LCR, 0); - serial_out(up, UART_MCR, status1 ^ UART_MCR_LOOP); - serial_out(up, UART_LCR, 0xE0); - status2 = serial_in(up, 0x02); /* EXCR1 */ - serial_out(up, UART_LCR, 0); - serial_out(up, UART_MCR, status1); - - if ((status2 ^ status1) & UART_MCR_LOOP) { - unsigned short quot; - - serial_out(up, UART_LCR, 0xE0); - - quot = serial_dl_read(up); - quot <<= 3; - - if (ns16550a_goto_highspeed(up)) - serial_dl_write(up, quot); - - serial_out(up, UART_LCR, 0); - - up->port.uartclk = 921600*16; - up->port.type = PORT_NS16550A; - up->capabilities |= UART_NATSEMI; - return; - } - } - - /* - * No EFR. Try to detect a TI16750, which only sets bit 5 of - * the IIR when 64 byte FIFO mode is enabled when DLAB is set. - * Try setting it with and without DLAB set. Cheap clones - * set bit 5 without DLAB set. - */ - serial_out(up, UART_LCR, 0); - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); - status1 = serial_in(up, UART_IIR) >> 5; - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); - status2 = serial_in(up, UART_IIR) >> 5; - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); - serial_out(up, UART_LCR, 0); - - DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2); - - if (status1 == 6 && status2 == 7) { - up->port.type = PORT_16750; - up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP; - return; - } - - /* - * Try writing and reading the UART_IER_UUE bit (b6). - * If it works, this is probably one of the Xscale platform's - * internal UARTs. - * We're going to explicitly set the UUE bit to 0 before - * trying to write and read a 1 just to make sure it's not - * already a 1 and maybe locked there before we even start start. - */ - iersave = serial_in(up, UART_IER); - serial_out(up, UART_IER, iersave & ~UART_IER_UUE); - if (!(serial_in(up, UART_IER) & UART_IER_UUE)) { - /* - * OK it's in a known zero state, try writing and reading - * without disturbing the current state of the other bits. - */ - serial_out(up, UART_IER, iersave | UART_IER_UUE); - if (serial_in(up, UART_IER) & UART_IER_UUE) { - /* - * It's an Xscale. - * We'll leave the UART_IER_UUE bit set to 1 (enabled). - */ - DEBUG_AUTOCONF("Xscale "); - up->port.type = PORT_XSCALE; - up->capabilities |= UART_CAP_UUE | UART_CAP_RTOIE; - return; - } - } else { - /* - * If we got here we couldn't force the IER_UUE bit to 0. - * Log it and continue. - */ - DEBUG_AUTOCONF("Couldn't force IER_UUE to 0 "); - } - serial_out(up, UART_IER, iersave); - - /* - * Exar uarts have EFR in a weird location - */ - if (up->port.flags & UPF_EXAR_EFR) { - DEBUG_AUTOCONF("Exar XR17D15x "); - up->port.type = PORT_XR17D15X; - up->capabilities |= UART_CAP_AFE | UART_CAP_EFR | - UART_CAP_SLEEP; - - return; - } - - /* - * We distinguish between 16550A and U6 16550A by counting - * how many bytes are in the FIFO. - */ - if (up->port.type == PORT_16550A && size_fifo(up) == 64) { - up->port.type = PORT_U6_16550A; - up->capabilities |= UART_CAP_AFE; - } -} - -/* - * This routine is called by rs_init() to initialize a specific serial - * port. It determines what type of UART chip this serial port is - * using: 8250, 16450, 16550, 16550A. The important question is - * whether or not this UART is a 16550A or not, since this will - * determine whether or not we can use its FIFO features or not. - */ -static void autoconfig(struct uart_8250_port *up, unsigned int probeflags) -{ - unsigned char status1, scratch, scratch2, scratch3; - unsigned char save_lcr, save_mcr; - struct uart_port *port = &up->port; - unsigned long flags; - unsigned int old_capabilities; - - if (!port->iobase && !port->mapbase && !port->membase) - return; - - DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04lx, 0x%p): ", - serial_index(port), port->iobase, port->membase); - - /* - * We really do need global IRQs disabled here - we're going to - * be frobbing the chips IRQ enable register to see if it exists. - */ - spin_lock_irqsave(&port->lock, flags); - - up->capabilities = 0; - up->bugs = 0; - - if (!(port->flags & UPF_BUGGY_UART)) { - /* - * Do a simple existence test first; if we fail this, - * there's no point trying anything else. - * - * 0x80 is used as a nonsense port to prevent against - * false positives due to ISA bus float. The - * assumption is that 0x80 is a non-existent port; - * which should be safe since include/asm/io.h also - * makes this assumption. - * - * Note: this is safe as long as MCR bit 4 is clear - * and the device is in "PC" mode. - */ - scratch = serial_in(up, UART_IER); - serial_out(up, UART_IER, 0); -#ifdef __i386__ - outb(0xff, 0x080); -#endif - /* - * Mask out IER[7:4] bits for test as some UARTs (e.g. TL - * 16C754B) allow only to modify them if an EFR bit is set. - */ - scratch2 = serial_in(up, UART_IER) & 0x0f; - serial_out(up, UART_IER, 0x0F); -#ifdef __i386__ - outb(0, 0x080); -#endif - scratch3 = serial_in(up, UART_IER) & 0x0f; - serial_out(up, UART_IER, scratch); - if (scratch2 != 0 || scratch3 != 0x0F) { - /* - * We failed; there's nothing here - */ - spin_unlock_irqrestore(&port->lock, flags); - DEBUG_AUTOCONF("IER test failed (%02x, %02x) ", - scratch2, scratch3); - goto out; - } - } - - save_mcr = serial_in(up, UART_MCR); - save_lcr = serial_in(up, UART_LCR); - - /* - * Check to see if a UART is really there. Certain broken - * internal modems based on the Rockwell chipset fail this - * test, because they apparently don't implement the loopback - * test mode. So this test is skipped on the COM 1 through - * COM 4 ports. This *should* be safe, since no board - * manufacturer would be stupid enough to design a board - * that conflicts with COM 1-4 --- we hope! - */ - if (!(port->flags & UPF_SKIP_TEST)) { - serial_out(up, UART_MCR, UART_MCR_LOOP | 0x0A); - status1 = serial_in(up, UART_MSR) & 0xF0; - serial_out(up, UART_MCR, save_mcr); - if (status1 != 0x90) { - spin_unlock_irqrestore(&port->lock, flags); - DEBUG_AUTOCONF("LOOP test failed (%02x) ", - status1); - goto out; - } - } - - /* - * We're pretty sure there's a port here. Lets find out what - * type of port it is. The IIR top two bits allows us to find - * out if it's 8250 or 16450, 16550, 16550A or later. This - * determines what we test for next. - * - * We also initialise the EFR (if any) to zero for later. The - * EFR occupies the same register location as the FCR and IIR. - */ - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - serial_out(up, UART_EFR, 0); - serial_out(up, UART_LCR, 0); - - serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); - scratch = serial_in(up, UART_IIR) >> 6; - - switch (scratch) { - case 0: - autoconfig_8250(up); - break; - case 1: - port->type = PORT_UNKNOWN; - break; - case 2: - port->type = PORT_16550; - break; - case 3: - autoconfig_16550a(up); - break; - } - -#ifdef CONFIG_SERIAL_8250_RSA - /* - * Only probe for RSA ports if we got the region. - */ - if (port->type == PORT_16550A && probeflags & PROBE_RSA) { - int i; - - for (i = 0 ; i < probe_rsa_count; ++i) { - if (probe_rsa[i] == port->iobase && __enable_rsa(up)) { - port->type = PORT_RSA; - break; - } - } - } -#endif - - serial_out(up, UART_LCR, save_lcr); - - port->fifosize = uart_config[up->port.type].fifo_size; - old_capabilities = up->capabilities; - up->capabilities = uart_config[port->type].flags; - up->tx_loadsz = uart_config[port->type].tx_loadsz; - - if (port->type == PORT_UNKNOWN) - goto out_lock; - - /* - * Reset the UART. - */ -#ifdef CONFIG_SERIAL_8250_RSA - if (port->type == PORT_RSA) - serial_out(up, UART_RSA_FRR, 0); -#endif - serial_out(up, UART_MCR, save_mcr); - serial8250_clear_fifos(up); - serial_in(up, UART_RX); - if (up->capabilities & UART_CAP_UUE) - serial_out(up, UART_IER, UART_IER_UUE); - else - serial_out(up, UART_IER, 0); - -out_lock: - spin_unlock_irqrestore(&port->lock, flags); - if (up->capabilities != old_capabilities) { - printk(KERN_WARNING - "ttyS%d: detected caps %08x should be %08x\n", - serial_index(port), old_capabilities, - up->capabilities); - } -out: - DEBUG_AUTOCONF("iir=%d ", scratch); - DEBUG_AUTOCONF("type=%s\n", uart_config[port->type].name); -} - -static void autoconfig_irq(struct uart_8250_port *up) -{ - struct uart_port *port = &up->port; - unsigned char save_mcr, save_ier; - unsigned char save_ICP = 0; - unsigned int ICP = 0; - unsigned long irqs; - int irq; - - if (port->flags & UPF_FOURPORT) { - ICP = (port->iobase & 0xfe0) | 0x1f; - save_ICP = inb_p(ICP); - outb_p(0x80, ICP); - inb_p(ICP); - } - - /* forget possible initially masked and pending IRQ */ - probe_irq_off(probe_irq_on()); - save_mcr = serial_in(up, UART_MCR); - save_ier = serial_in(up, UART_IER); - serial_out(up, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2); - - irqs = probe_irq_on(); - serial_out(up, UART_MCR, 0); - udelay(10); - if (port->flags & UPF_FOURPORT) { - serial_out(up, UART_MCR, - UART_MCR_DTR | UART_MCR_RTS); - } else { - serial_out(up, UART_MCR, - UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2); - } - serial_out(up, UART_IER, 0x0f); /* enable all intrs */ - serial_in(up, UART_LSR); - serial_in(up, UART_RX); - serial_in(up, UART_IIR); - serial_in(up, UART_MSR); - serial_out(up, UART_TX, 0xFF); - udelay(20); - irq = probe_irq_off(irqs); - - serial_out(up, UART_MCR, save_mcr); - serial_out(up, UART_IER, save_ier); - - if (port->flags & UPF_FOURPORT) - outb_p(save_ICP, ICP); - - port->irq = (irq > 0) ? irq : 0; -} - -static inline void __stop_tx(struct uart_8250_port *p) -{ - if (p->ier & UART_IER_THRI) { - p->ier &= ~UART_IER_THRI; - serial_out(p, UART_IER, p->ier); - } -} - -static void serial8250_stop_tx(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - __stop_tx(up); - - /* - * We really want to stop the transmitter from sending. - */ - if (port->type == PORT_16C950) { - up->acr |= UART_ACR_TXDIS; - serial_icr_write(up, UART_ACR, up->acr); - } -} - -static void serial8250_start_tx(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - if (up->dma && !serial8250_tx_dma(up)) { - return; - } else if (!(up->ier & UART_IER_THRI)) { - up->ier |= UART_IER_THRI; - serial_port_out(port, UART_IER, up->ier); - - if (up->bugs & UART_BUG_TXEN) { - unsigned char lsr; - lsr = serial_in(up, UART_LSR); - up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; - if (lsr & UART_LSR_TEMT) - serial8250_tx_chars(up); - } - } - - /* - * Re-enable the transmitter if we disabled it. - */ - if (port->type == PORT_16C950 && up->acr & UART_ACR_TXDIS) { - up->acr &= ~UART_ACR_TXDIS; - serial_icr_write(up, UART_ACR, up->acr); - } -} - -static void serial8250_stop_rx(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - up->ier &= ~UART_IER_RLSI; - up->port.read_status_mask &= ~UART_LSR_DR; - serial_port_out(port, UART_IER, up->ier); -} - -static void serial8250_enable_ms(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - /* no MSR capabilities */ - if (up->bugs & UART_BUG_NOMSR) - return; - - up->ier |= UART_IER_MSI; - serial_port_out(port, UART_IER, up->ier); -} - -/* - * serial8250_rx_chars: processes according to the passed in LSR - * value, and returns the remaining LSR bits not handled - * by this Rx routine. - */ -unsigned char -serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) -{ - struct uart_port *port = &up->port; - unsigned char ch; - int max_count = 256; - char flag; - - do { - if (likely(lsr & UART_LSR_DR)) - ch = serial_in(up, UART_RX); - else - /* - * Intel 82571 has a Serial Over Lan device that will - * set UART_LSR_BI without setting UART_LSR_DR when - * it receives a break. To avoid reading from the - * receive buffer without UART_LSR_DR bit set, we - * just force the read character to be 0 - */ - ch = 0; - - flag = TTY_NORMAL; - port->icount.rx++; - - lsr |= up->lsr_saved_flags; - up->lsr_saved_flags = 0; - - if (unlikely(lsr & UART_LSR_BRK_ERROR_BITS)) { - if (lsr & UART_LSR_BI) { - lsr &= ~(UART_LSR_FE | UART_LSR_PE); - port->icount.brk++; - /* - * We do the SysRQ and SAK checking - * here because otherwise the break - * may get masked by ignore_status_mask - * or read_status_mask. - */ - if (uart_handle_break(port)) - goto ignore_char; - } else if (lsr & UART_LSR_PE) - port->icount.parity++; - else if (lsr & UART_LSR_FE) - port->icount.frame++; - if (lsr & UART_LSR_OE) - port->icount.overrun++; - - /* - * Mask off conditions which should be ignored. - */ - lsr &= port->read_status_mask; - - if (lsr & UART_LSR_BI) { - DEBUG_INTR("handling break...."); - flag = TTY_BREAK; - } else if (lsr & UART_LSR_PE) - flag = TTY_PARITY; - else if (lsr & UART_LSR_FE) - flag = TTY_FRAME; - } - if (uart_handle_sysrq_char(port, ch)) - goto ignore_char; - - uart_insert_char(port, lsr, UART_LSR_OE, ch, flag); - -ignore_char: - lsr = serial_in(up, UART_LSR); - } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0)); - spin_unlock(&port->lock); - tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); - return lsr; -} -EXPORT_SYMBOL_GPL(serial8250_rx_chars); - -void serial8250_tx_chars(struct uart_8250_port *up) -{ - struct uart_port *port = &up->port; - struct circ_buf *xmit = &port->state->xmit; - int count; - - if (port->x_char) { - serial_out(up, UART_TX, port->x_char); - port->icount.tx++; - port->x_char = 0; - return; - } - if (uart_tx_stopped(port)) { - serial8250_stop_tx(port); - return; - } - if (uart_circ_empty(xmit)) { - __stop_tx(up); - return; - } - - count = up->tx_loadsz; - do { - serial_out(up, UART_TX, xmit->buf[xmit->tail]); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - port->icount.tx++; - if (uart_circ_empty(xmit)) - break; - if (up->capabilities & UART_CAP_HFIFO) { - if ((serial_port_in(port, UART_LSR) & BOTH_EMPTY) != - BOTH_EMPTY) - break; - } - } while (--count > 0); - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); - - DEBUG_INTR("THRE..."); - - if (uart_circ_empty(xmit)) - __stop_tx(up); -} -EXPORT_SYMBOL_GPL(serial8250_tx_chars); - -unsigned int serial8250_modem_status(struct uart_8250_port *up) -{ - struct uart_port *port = &up->port; - unsigned int status = serial_in(up, UART_MSR); - - status |= up->msr_saved_flags; - up->msr_saved_flags = 0; - if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && - port->state != NULL) { - if (status & UART_MSR_TERI) - port->icount.rng++; - if (status & UART_MSR_DDSR) - port->icount.dsr++; - if (status & UART_MSR_DDCD) - uart_handle_dcd_change(port, status & UART_MSR_DCD); - if (status & UART_MSR_DCTS) - uart_handle_cts_change(port, status & UART_MSR_CTS); - - wake_up_interruptible(&port->state->port.delta_msr_wait); - } - - return status; -} -EXPORT_SYMBOL_GPL(serial8250_modem_status); - -/* - * This handles the interrupt from one port. - */ -int serial8250_handle_irq(struct uart_port *port, unsigned int iir) -{ - unsigned char status; - unsigned long flags; - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - int dma_err = 0; - - if (iir & UART_IIR_NO_INT) - return 0; - - spin_lock_irqsave(&port->lock, flags); - - status = serial_port_in(port, UART_LSR); - - DEBUG_INTR("status = %x...", status); - - if (status & (UART_LSR_DR | UART_LSR_BI)) { - if (up->dma) - dma_err = serial8250_rx_dma(up, iir); - - if (!up->dma || dma_err) - status = serial8250_rx_chars(up, status); - } - serial8250_modem_status(up); - if (status & UART_LSR_THRE) - serial8250_tx_chars(up); - - spin_unlock_irqrestore(&port->lock, flags); - return 1; -} -EXPORT_SYMBOL_GPL(serial8250_handle_irq); - -static int serial8250_default_handle_irq(struct uart_port *port) -{ - unsigned int iir = serial_port_in(port, UART_IIR); - - return serial8250_handle_irq(port, iir); -} - -/* - * These Exar UARTs have an extra interrupt indicator that could - * fire for a few unimplemented interrupts. One of which is a - * wakeup event when coming out of sleep. Put this here just - * to be on the safe side that these interrupts don't go unhandled. - */ -static int exar_handle_irq(struct uart_port *port) -{ - unsigned char int0, int1, int2, int3; - unsigned int iir = serial_port_in(port, UART_IIR); - int ret; - - ret = serial8250_handle_irq(port, iir); - - if ((port->type == PORT_XR17V35X) || - (port->type == PORT_XR17D15X)) { - int0 = serial_port_in(port, 0x80); - int1 = serial_port_in(port, 0x81); - int2 = serial_port_in(port, 0x82); - int3 = serial_port_in(port, 0x83); - } - - return ret; -} - -/* - * This is the serial driver's interrupt routine. - * - * Arjan thinks the old way was overly complex, so it got simplified. - * Alan disagrees, saying that need the complexity to handle the weird - * nature of ISA shared interrupts. (This is a special exception.) - * - * In order to handle ISA shared interrupts properly, we need to check - * that all ports have been serviced, and therefore the ISA interrupt - * line has been de-asserted. - * - * This means we need to loop through all ports. checking that they - * don't have an interrupt pending. - */ -static irqreturn_t serial8250_interrupt(int irq, void *dev_id) -{ - struct irq_info *i = dev_id; - struct list_head *l, *end = NULL; - int pass_counter = 0, handled = 0; - - DEBUG_INTR("serial8250_interrupt(%d)...", irq); - - spin_lock(&i->lock); - - l = i->head; - do { - struct uart_8250_port *up; - struct uart_port *port; - - up = list_entry(l, struct uart_8250_port, list); - port = &up->port; - - if (port->handle_irq(port)) { - handled = 1; - end = NULL; - } else if (end == NULL) - end = l; - - l = l->next; - - if (l == i->head && pass_counter++ > PASS_LIMIT) { - /* If we hit this, we're dead. */ - printk_ratelimited(KERN_ERR - "serial8250: too much work for irq%d\n", irq); - break; - } - } while (l != end); - - spin_unlock(&i->lock); - - DEBUG_INTR("end.\n"); - - return IRQ_RETVAL(handled); -} - -/* - * To support ISA shared interrupts, we need to have one interrupt - * handler that ensures that the IRQ line has been deasserted - * before returning. Failing to do this will result in the IRQ - * line being stuck active, and, since ISA irqs are edge triggered, - * no more IRQs will be seen. - */ -static void serial_do_unlink(struct irq_info *i, struct uart_8250_port *up) -{ - spin_lock_irq(&i->lock); - - if (!list_empty(i->head)) { - if (i->head == &up->list) - i->head = i->head->next; - list_del(&up->list); - } else { - BUG_ON(i->head != &up->list); - i->head = NULL; - } - spin_unlock_irq(&i->lock); - /* List empty so throw away the hash node */ - if (i->head == NULL) { - hlist_del(&i->node); - kfree(i); - } -} - -static int serial_link_irq_chain(struct uart_8250_port *up) -{ - struct hlist_head *h; - struct hlist_node *n; - struct irq_info *i; - int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0; - - mutex_lock(&hash_mutex); - - h = &irq_lists[up->port.irq % NR_IRQ_HASH]; - - hlist_for_each(n, h) { - i = hlist_entry(n, struct irq_info, node); - if (i->irq == up->port.irq) - break; - } - - if (n == NULL) { - i = kzalloc(sizeof(struct irq_info), GFP_KERNEL); - if (i == NULL) { - mutex_unlock(&hash_mutex); - return -ENOMEM; - } - spin_lock_init(&i->lock); - i->irq = up->port.irq; - hlist_add_head(&i->node, h); - } - mutex_unlock(&hash_mutex); - - spin_lock_irq(&i->lock); - - if (i->head) { - list_add(&up->list, i->head); - spin_unlock_irq(&i->lock); - - ret = 0; - } else { - INIT_LIST_HEAD(&up->list); - i->head = &up->list; - spin_unlock_irq(&i->lock); - irq_flags |= up->port.irqflags; - ret = request_irq(up->port.irq, serial8250_interrupt, - irq_flags, "serial", i); - if (ret < 0) - serial_do_unlink(i, up); - } - - return ret; -} - -static void serial_unlink_irq_chain(struct uart_8250_port *up) -{ - struct irq_info *i; - struct hlist_node *n; - struct hlist_head *h; - - mutex_lock(&hash_mutex); - - h = &irq_lists[up->port.irq % NR_IRQ_HASH]; - - hlist_for_each(n, h) { - i = hlist_entry(n, struct irq_info, node); - if (i->irq == up->port.irq) - break; - } - - BUG_ON(n == NULL); - BUG_ON(i->head == NULL); - - if (list_empty(i->head)) - free_irq(up->port.irq, i); - - serial_do_unlink(i, up); - mutex_unlock(&hash_mutex); -} - -/* - * This function is used to handle ports that do not have an - * interrupt. This doesn't work very well for 16450's, but gives - * barely passable results for a 16550A. (Although at the expense - * of much CPU overhead). - */ -static void serial8250_timeout(unsigned long data) -{ - struct uart_8250_port *up = (struct uart_8250_port *)data; - - up->port.handle_irq(&up->port); - mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port)); -} - -static void serial8250_backup_timeout(unsigned long data) -{ - struct uart_8250_port *up = (struct uart_8250_port *)data; - unsigned int iir, ier = 0, lsr; - unsigned long flags; - - spin_lock_irqsave(&up->port.lock, flags); - - /* - * Must disable interrupts or else we risk racing with the interrupt - * based handler. - */ - if (up->port.irq) { - ier = serial_in(up, UART_IER); - serial_out(up, UART_IER, 0); - } - - iir = serial_in(up, UART_IIR); - - /* - * This should be a safe test for anyone who doesn't trust the - * IIR bits on their UART, but it's specifically designed for - * the "Diva" UART used on the management processor on many HP - * ia64 and parisc boxes. - */ - lsr = serial_in(up, UART_LSR); - up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; - if ((iir & UART_IIR_NO_INT) && (up->ier & UART_IER_THRI) && - (!uart_circ_empty(&up->port.state->xmit) || up->port.x_char) && - (lsr & UART_LSR_THRE)) { - iir &= ~(UART_IIR_ID | UART_IIR_NO_INT); - iir |= UART_IIR_THRI; - } - - if (!(iir & UART_IIR_NO_INT)) - serial8250_tx_chars(up); - - if (up->port.irq) - serial_out(up, UART_IER, ier); - - spin_unlock_irqrestore(&up->port.lock, flags); - - /* Standard timer interval plus 0.2s to keep the port running */ - mod_timer(&up->timer, - jiffies + uart_poll_timeout(&up->port) + HZ / 5); -} - -static unsigned int serial8250_tx_empty(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned long flags; - unsigned int lsr; - - spin_lock_irqsave(&port->lock, flags); - lsr = serial_port_in(port, UART_LSR); - up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; - spin_unlock_irqrestore(&port->lock, flags); - - return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0; -} - -static unsigned int serial8250_get_mctrl(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned int status; - unsigned int ret; - - status = serial8250_modem_status(up); - - ret = 0; - if (status & UART_MSR_DCD) - ret |= TIOCM_CAR; - if (status & UART_MSR_RI) - ret |= TIOCM_RNG; - if (status & UART_MSR_DSR) - ret |= TIOCM_DSR; - if (status & UART_MSR_CTS) - ret |= TIOCM_CTS; - return ret; -} - -static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned char mcr = 0; - - if (mctrl & TIOCM_RTS) - mcr |= UART_MCR_RTS; - if (mctrl & TIOCM_DTR) - mcr |= UART_MCR_DTR; - if (mctrl & TIOCM_OUT1) - mcr |= UART_MCR_OUT1; - if (mctrl & TIOCM_OUT2) - mcr |= UART_MCR_OUT2; - if (mctrl & TIOCM_LOOP) - mcr |= UART_MCR_LOOP; - - mcr = (mcr & up->mcr_mask) | up->mcr_force | up->mcr; - - serial_port_out(port, UART_MCR, mcr); -} - -static void serial8250_break_ctl(struct uart_port *port, int break_state) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned long flags; - - spin_lock_irqsave(&port->lock, flags); - if (break_state == -1) - up->lcr |= UART_LCR_SBC; - else - up->lcr &= ~UART_LCR_SBC; - serial_port_out(port, UART_LCR, up->lcr); - spin_unlock_irqrestore(&port->lock, flags); -} - -/* - * Wait for transmitter & holding register to empty - */ -static void wait_for_xmitr(struct uart_8250_port *up, int bits) -{ - unsigned int status, tmout = 10000; - - /* Wait up to 10ms for the character(s) to be sent. */ - for (;;) { - status = serial_in(up, UART_LSR); - - up->lsr_saved_flags |= status & LSR_SAVE_FLAGS; - - if ((status & bits) == bits) - break; - if (--tmout == 0) - break; - udelay(1); - } - - /* Wait up to 1s for flow control if necessary */ - if (up->port.flags & UPF_CONS_FLOW) { - unsigned int tmout; - for (tmout = 1000000; tmout; tmout--) { - unsigned int msr = serial_in(up, UART_MSR); - up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; - if (msr & UART_MSR_CTS) - break; - udelay(1); - touch_nmi_watchdog(); - } - } -} - -#ifdef CONFIG_CONSOLE_POLL -/* - * Console polling routines for writing and reading from the uart while - * in an interrupt or debug context. - */ - -static int serial8250_get_poll_char(struct uart_port *port) -{ - unsigned char lsr = serial_port_in(port, UART_LSR); - - if (!(lsr & UART_LSR_DR)) - return NO_POLL_CHAR; - - return serial_port_in(port, UART_RX); -} - - -static void serial8250_put_poll_char(struct uart_port *port, - unsigned char c) -{ - unsigned int ier; - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - /* - * First save the IER then disable the interrupts - */ - ier = serial_port_in(port, UART_IER); - if (up->capabilities & UART_CAP_UUE) - serial_port_out(port, UART_IER, UART_IER_UUE); - else - serial_port_out(port, UART_IER, 0); - - wait_for_xmitr(up, BOTH_EMPTY); - /* - * Send the character out. - * If a LF, also do CR... - */ - serial_port_out(port, UART_TX, c); - if (c == 10) { - wait_for_xmitr(up, BOTH_EMPTY); - serial_port_out(port, UART_TX, 13); - } - - /* - * Finally, wait for transmitter to become empty - * and restore the IER - */ - wait_for_xmitr(up, BOTH_EMPTY); - serial_port_out(port, UART_IER, ier); -} - -#endif /* CONFIG_CONSOLE_POLL */ - -static int serial8250_startup(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned long flags; - unsigned char lsr, iir; - int retval; - - if (port->type == PORT_8250_CIR) - return -ENODEV; - - if (!port->fifosize) - port->fifosize = uart_config[port->type].fifo_size; - if (!up->tx_loadsz) - up->tx_loadsz = uart_config[port->type].tx_loadsz; - if (!up->capabilities) - up->capabilities = uart_config[port->type].flags; - up->mcr = 0; - - if (port->iotype != up->cur_iotype) - set_io_from_upio(port); - - if (port->type == PORT_16C950) { - /* Wake up and initialize UART */ - up->acr = 0; - serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); - serial_port_out(port, UART_EFR, UART_EFR_ECB); - serial_port_out(port, UART_IER, 0); - serial_port_out(port, UART_LCR, 0); - serial_icr_write(up, UART_CSR, 0); /* Reset the UART */ - serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); - serial_port_out(port, UART_EFR, UART_EFR_ECB); - serial_port_out(port, UART_LCR, 0); - } - -#ifdef CONFIG_SERIAL_8250_RSA - /* - * If this is an RSA port, see if we can kick it up to the - * higher speed clock. - */ - enable_rsa(up); -#endif - - /* - * Clear the FIFO buffers and disable them. - * (they will be reenabled in set_termios()) - */ - serial8250_clear_fifos(up); - - /* - * Clear the interrupt registers. - */ - serial_port_in(port, UART_LSR); - serial_port_in(port, UART_RX); - serial_port_in(port, UART_IIR); - serial_port_in(port, UART_MSR); - - /* - * At this point, there's no way the LSR could still be 0xff; - * if it is, then bail out, because there's likely no UART - * here. - */ - if (!(port->flags & UPF_BUGGY_UART) && - (serial_port_in(port, UART_LSR) == 0xff)) { - printk_ratelimited(KERN_INFO "ttyS%d: LSR safety check engaged!\n", - serial_index(port)); - return -ENODEV; - } - - /* - * For a XR16C850, we need to set the trigger levels - */ - if (port->type == PORT_16850) { - unsigned char fctr; - - serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); - - fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX); - serial_port_out(port, UART_FCTR, - fctr | UART_FCTR_TRGD | UART_FCTR_RX); - serial_port_out(port, UART_TRG, UART_TRG_96); - serial_port_out(port, UART_FCTR, - fctr | UART_FCTR_TRGD | UART_FCTR_TX); - serial_port_out(port, UART_TRG, UART_TRG_96); - - serial_port_out(port, UART_LCR, 0); - } - - if (port->irq) { - unsigned char iir1; - /* - * Test for UARTs that do not reassert THRE when the - * transmitter is idle and the interrupt has already - * been cleared. Real 16550s should always reassert - * this interrupt whenever the transmitter is idle and - * the interrupt is enabled. Delays are necessary to - * allow register changes to become visible. - */ - spin_lock_irqsave(&port->lock, flags); - if (up->port.irqflags & IRQF_SHARED) - disable_irq_nosync(port->irq); - - wait_for_xmitr(up, UART_LSR_THRE); - serial_port_out_sync(port, UART_IER, UART_IER_THRI); - udelay(1); /* allow THRE to set */ - iir1 = serial_port_in(port, UART_IIR); - serial_port_out(port, UART_IER, 0); - serial_port_out_sync(port, UART_IER, UART_IER_THRI); - udelay(1); /* allow a working UART time to re-assert THRE */ - iir = serial_port_in(port, UART_IIR); - serial_port_out(port, UART_IER, 0); - - if (port->irqflags & IRQF_SHARED) - enable_irq(port->irq); - spin_unlock_irqrestore(&port->lock, flags); - - /* - * If the interrupt is not reasserted, or we otherwise - * don't trust the iir, setup a timer to kick the UART - * on a regular basis. - */ - if ((!(iir1 & UART_IIR_NO_INT) && (iir & UART_IIR_NO_INT)) || - up->port.flags & UPF_BUG_THRE) { - up->bugs |= UART_BUG_THRE; - pr_debug("ttyS%d - using backup timer\n", - serial_index(port)); - } - } - - /* - * The above check will only give an accurate result the first time - * the port is opened so this value needs to be preserved. - */ - if (up->bugs & UART_BUG_THRE) { - up->timer.function = serial8250_backup_timeout; - up->timer.data = (unsigned long)up; - mod_timer(&up->timer, jiffies + - uart_poll_timeout(port) + HZ / 5); - } - - /* - * If the "interrupt" for this port doesn't correspond with any - * hardware interrupt, we use a timer-based system. The original - * driver used to do this with IRQ0. - */ - if (!port->irq) { - up->timer.data = (unsigned long)up; - mod_timer(&up->timer, jiffies + uart_poll_timeout(port)); - } else { - retval = serial_link_irq_chain(up); - if (retval) - return retval; - } - - /* - * Now, initialize the UART - */ - serial_port_out(port, UART_LCR, UART_LCR_WLEN8); - - spin_lock_irqsave(&port->lock, flags); - if (up->port.flags & UPF_FOURPORT) { - if (!up->port.irq) - up->port.mctrl |= TIOCM_OUT1; - } else - /* - * Most PC uarts need OUT2 raised to enable interrupts. - */ - if (port->irq) - up->port.mctrl |= TIOCM_OUT2; - - serial8250_set_mctrl(port, port->mctrl); - - /* Serial over Lan (SoL) hack: - Intel 8257x Gigabit ethernet chips have a - 16550 emulation, to be used for Serial Over Lan. - Those chips take a longer time than a normal - serial device to signalize that a transmission - data was queued. Due to that, the above test generally - fails. One solution would be to delay the reading of - iir. However, this is not reliable, since the timeout - is variable. So, let's just don't test if we receive - TX irq. This way, we'll never enable UART_BUG_TXEN. - */ - if (skip_txen_test || up->port.flags & UPF_NO_TXEN_TEST) - goto dont_test_tx_en; - - /* - * Do a quick test to see if we receive an - * interrupt when we enable the TX irq. - */ - serial_port_out(port, UART_IER, UART_IER_THRI); - lsr = serial_port_in(port, UART_LSR); - iir = serial_port_in(port, UART_IIR); - serial_port_out(port, UART_IER, 0); - - if (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT) { - if (!(up->bugs & UART_BUG_TXEN)) { - up->bugs |= UART_BUG_TXEN; - pr_debug("ttyS%d - enabling bad tx status workarounds\n", - serial_index(port)); - } - } else { - up->bugs &= ~UART_BUG_TXEN; - } - -dont_test_tx_en: - spin_unlock_irqrestore(&port->lock, flags); - - /* - * Clear the interrupt registers again for luck, and clear the - * saved flags to avoid getting false values from polling - * routines or the previous session. - */ - serial_port_in(port, UART_LSR); - serial_port_in(port, UART_RX); - serial_port_in(port, UART_IIR); - serial_port_in(port, UART_MSR); - up->lsr_saved_flags = 0; - up->msr_saved_flags = 0; - - /* - * Request DMA channels for both RX and TX. - */ - if (up->dma) { - retval = serial8250_request_dma(up); - if (retval) { - pr_warn_ratelimited("ttyS%d - failed to request DMA\n", - serial_index(port)); - up->dma = NULL; - } - } - - /* - * Finally, enable interrupts. Note: Modem status interrupts - * are set via set_termios(), which will be occurring imminently - * anyway, so we don't enable them here. - */ - up->ier = UART_IER_RLSI | UART_IER_RDI; - serial_port_out(port, UART_IER, up->ier); - - if (port->flags & UPF_FOURPORT) { - unsigned int icp; - /* - * Enable interrupts on the AST Fourport board - */ - icp = (port->iobase & 0xfe0) | 0x01f; - outb_p(0x80, icp); - inb_p(icp); - } - - return 0; -} - -static void serial8250_shutdown(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned long flags; - - /* - * Disable interrupts from this port - */ - up->ier = 0; - serial_port_out(port, UART_IER, 0); - - if (up->dma) - serial8250_release_dma(up); - - spin_lock_irqsave(&port->lock, flags); - if (port->flags & UPF_FOURPORT) { - /* reset interrupts on the AST Fourport board */ - inb((port->iobase & 0xfe0) | 0x1f); - port->mctrl |= TIOCM_OUT1; - } else - port->mctrl &= ~TIOCM_OUT2; - - serial8250_set_mctrl(port, port->mctrl); - spin_unlock_irqrestore(&port->lock, flags); - - /* - * Disable break condition and FIFOs - */ - serial_port_out(port, UART_LCR, - serial_port_in(port, UART_LCR) & ~UART_LCR_SBC); - serial8250_clear_fifos(up); - -#ifdef CONFIG_SERIAL_8250_RSA - /* - * Reset the RSA board back to 115kbps compat mode. - */ - disable_rsa(up); -#endif - - /* - * Read data port to reset things, and then unlink from - * the IRQ chain. - */ - serial_port_in(port, UART_RX); - - del_timer_sync(&up->timer); - up->timer.function = serial8250_timeout; - if (port->irq) - serial_unlink_irq_chain(up); -} - -static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int baud) -{ - unsigned int quot; - - /* - * Handle magic divisors for baud rates above baud_base on - * SMSC SuperIO chips. - */ - if ((port->flags & UPF_MAGIC_MULTIPLIER) && - baud == (port->uartclk/4)) - quot = 0x8001; - else if ((port->flags & UPF_MAGIC_MULTIPLIER) && - baud == (port->uartclk/8)) - quot = 0x8002; - else - quot = uart_get_divisor(port, baud); - - return quot; -} - -void -serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, - struct ktermios *old) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - unsigned char cval, fcr = 0; - unsigned long flags; - unsigned int baud, quot; - int fifo_bug = 0; - - switch (termios->c_cflag & CSIZE) { - case CS5: - cval = UART_LCR_WLEN5; - break; - case CS6: - cval = UART_LCR_WLEN6; - break; - case CS7: - cval = UART_LCR_WLEN7; - break; - default: - case CS8: - cval = UART_LCR_WLEN8; - break; - } - - if (termios->c_cflag & CSTOPB) - cval |= UART_LCR_STOP; - if (termios->c_cflag & PARENB) { - cval |= UART_LCR_PARITY; - if (up->bugs & UART_BUG_PARITY) - fifo_bug = 1; - } - if (!(termios->c_cflag & PARODD)) - cval |= UART_LCR_EPAR; -#ifdef CMSPAR - if (termios->c_cflag & CMSPAR) - cval |= UART_LCR_SPAR; -#endif - - /* - * Ask the core to calculate the divisor for us. - */ - baud = uart_get_baud_rate(port, termios, old, - port->uartclk / 16 / 0xffff, - port->uartclk / 16); - quot = serial8250_get_divisor(port, baud); - - /* - * Oxford Semi 952 rev B workaround - */ - if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0) - quot++; - - if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { - fcr = uart_config[port->type].fcr; - if (baud < 2400 || fifo_bug) { - fcr &= ~UART_FCR_TRIGGER_MASK; - fcr |= UART_FCR_TRIGGER_1; - } - } - - /* - * MCR-based auto flow control. When AFE is enabled, RTS will be - * deasserted when the receive FIFO contains more characters than - * the trigger, or the MCR RTS bit is cleared. In the case where - * the remote UART is not using CTS auto flow control, we must - * have sufficient FIFO entries for the latency of the remote - * UART to respond. IOW, at least 32 bytes of FIFO. - */ - if (up->capabilities & UART_CAP_AFE && port->fifosize >= 32) { - up->mcr &= ~UART_MCR_AFE; - if (termios->c_cflag & CRTSCTS) - up->mcr |= UART_MCR_AFE; - } - - /* - * Ok, we're now changing the port state. Do it with - * interrupts disabled. - */ - spin_lock_irqsave(&port->lock, flags); - - /* - * Update the per-port timeout. - */ - uart_update_timeout(port, termios->c_cflag, baud); - - port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; - if (termios->c_iflag & INPCK) - port->read_status_mask |= UART_LSR_FE | UART_LSR_PE; - if (termios->c_iflag & (BRKINT | PARMRK)) - port->read_status_mask |= UART_LSR_BI; - - /* - * Characteres to ignore - */ - port->ignore_status_mask = 0; - if (termios->c_iflag & IGNPAR) - port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; - if (termios->c_iflag & IGNBRK) { - port->ignore_status_mask |= UART_LSR_BI; - /* - * If we're ignoring parity and break indicators, - * ignore overruns too (for real raw support). - */ - if (termios->c_iflag & IGNPAR) - port->ignore_status_mask |= UART_LSR_OE; - } - - /* - * ignore all characters if CREAD is not set - */ - if ((termios->c_cflag & CREAD) == 0) - port->ignore_status_mask |= UART_LSR_DR; - - /* - * CTS flow control flag and modem status interrupts - */ - up->ier &= ~UART_IER_MSI; - if (!(up->bugs & UART_BUG_NOMSR) && - UART_ENABLE_MS(&up->port, termios->c_cflag)) - up->ier |= UART_IER_MSI; - if (up->capabilities & UART_CAP_UUE) - up->ier |= UART_IER_UUE; - if (up->capabilities & UART_CAP_RTOIE) - up->ier |= UART_IER_RTOIE; - - serial_port_out(port, UART_IER, up->ier); - - if (up->capabilities & UART_CAP_EFR) { - unsigned char efr = 0; - /* - * TI16C752/Startech hardware flow control. FIXME: - * - TI16C752 requires control thresholds to be set. - * - UART_MCR_RTS is ineffective if auto-RTS mode is enabled. - */ - if (termios->c_cflag & CRTSCTS) - efr |= UART_EFR_CTS; - - serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); - if (port->flags & UPF_EXAR_EFR) - serial_port_out(port, UART_XR_EFR, efr); - else - serial_port_out(port, UART_EFR, efr); - } - - /* Workaround to enable 115200 baud on OMAP1510 internal ports */ - if (is_omap1510_8250(up)) { - if (baud == 115200) { - quot = 1; - serial_port_out(port, UART_OMAP_OSC_12M_SEL, 1); - } else - serial_port_out(port, UART_OMAP_OSC_12M_SEL, 0); - } - - /* - * For NatSemi, switch to bank 2 not bank 1, to avoid resetting EXCR2, - * otherwise just set DLAB - */ - if (up->capabilities & UART_NATSEMI) - serial_port_out(port, UART_LCR, 0xe0); - else - serial_port_out(port, UART_LCR, cval | UART_LCR_DLAB); - - serial_dl_write(up, quot); - - /* - * LCR DLAB must be set to enable 64-byte FIFO mode. If the FCR - * is written without DLAB set, this mode will be disabled. - */ - if (port->type == PORT_16750) - serial_port_out(port, UART_FCR, fcr); - - serial_port_out(port, UART_LCR, cval); /* reset DLAB */ - up->lcr = cval; /* Save LCR */ - if (port->type != PORT_16750) { - /* emulated UARTs (Lucent Venus 167x) need two steps */ - if (fcr & UART_FCR_ENABLE_FIFO) - serial_port_out(port, UART_FCR, UART_FCR_ENABLE_FIFO); - serial_port_out(port, UART_FCR, fcr); /* set fcr */ - } - serial8250_set_mctrl(port, port->mctrl); - spin_unlock_irqrestore(&port->lock, flags); - /* Don't rewrite B0 */ - if (tty_termios_baud_rate(termios)) - tty_termios_encode_baud_rate(termios, baud, baud); -} -EXPORT_SYMBOL(serial8250_do_set_termios); - -static void -serial8250_set_termios(struct uart_port *port, struct ktermios *termios, - struct ktermios *old) -{ - if (port->set_termios) - port->set_termios(port, termios, old); - else - serial8250_do_set_termios(port, termios, old); -} - -static void -serial8250_set_ldisc(struct uart_port *port, int new) -{ - if (new == N_PPS) { - port->flags |= UPF_HARDPPS_CD; - serial8250_enable_ms(port); - } else - port->flags &= ~UPF_HARDPPS_CD; -} - - -void serial8250_do_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) -{ - struct uart_8250_port *p = - container_of(port, struct uart_8250_port, port); - - serial8250_set_sleep(p, state != 0); -} -EXPORT_SYMBOL(serial8250_do_pm); - -static void -serial8250_pm(struct uart_port *port, unsigned int state, - unsigned int oldstate) -{ - if (port->pm) - port->pm(port, state, oldstate); - else - serial8250_do_pm(port, state, oldstate); -} - -static unsigned int serial8250_port_size(struct uart_8250_port *pt) -{ - if (pt->port.iotype == UPIO_AU) - return 0x1000; - if (is_omap1_8250(pt)) - return 0x16 << pt->port.regshift; - - return 8 << pt->port.regshift; -} - -/* - * Resource handling. - */ -static int serial8250_request_std_resource(struct uart_8250_port *up) -{ - unsigned int size = serial8250_port_size(up); - struct uart_port *port = &up->port; - int ret = 0; - - switch (port->iotype) { - case UPIO_AU: - case UPIO_TSI: - case UPIO_MEM32: - case UPIO_MEM: - if (!port->mapbase) - break; - - if (!request_mem_region(port->mapbase, size, "serial")) { - ret = -EBUSY; - break; - } - - if (port->flags & UPF_IOREMAP) { - port->membase = ioremap_nocache(port->mapbase, size); - if (!port->membase) { - release_mem_region(port->mapbase, size); - ret = -ENOMEM; - } - } - break; - - case UPIO_HUB6: - case UPIO_PORT: - if (!request_region(port->iobase, size, "serial")) - ret = -EBUSY; - break; - } - return ret; -} - -static void serial8250_release_std_resource(struct uart_8250_port *up) -{ - unsigned int size = serial8250_port_size(up); - struct uart_port *port = &up->port; - - switch (port->iotype) { - case UPIO_AU: - case UPIO_TSI: - case UPIO_MEM32: - case UPIO_MEM: - if (!port->mapbase) - break; - - if (port->flags & UPF_IOREMAP) { - iounmap(port->membase); - port->membase = NULL; - } - - release_mem_region(port->mapbase, size); - break; - - case UPIO_HUB6: - case UPIO_PORT: - release_region(port->iobase, size); - break; - } -} - -static int serial8250_request_rsa_resource(struct uart_8250_port *up) -{ - unsigned long start = UART_RSA_BASE << up->port.regshift; - unsigned int size = 8 << up->port.regshift; - struct uart_port *port = &up->port; - int ret = -EINVAL; - - switch (port->iotype) { - case UPIO_HUB6: - case UPIO_PORT: - start += port->iobase; - if (request_region(start, size, "serial-rsa")) - ret = 0; - else - ret = -EBUSY; - break; - } - - return ret; -} - -static void serial8250_release_rsa_resource(struct uart_8250_port *up) -{ - unsigned long offset = UART_RSA_BASE << up->port.regshift; - unsigned int size = 8 << up->port.regshift; - struct uart_port *port = &up->port; - - switch (port->iotype) { - case UPIO_HUB6: - case UPIO_PORT: - release_region(port->iobase + offset, size); - break; - } -} - -static void serial8250_release_port(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - serial8250_release_std_resource(up); - if (port->type == PORT_RSA) - serial8250_release_rsa_resource(up); -} - -static int serial8250_request_port(struct uart_port *port) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - int ret; - - if (port->type == PORT_8250_CIR) - return -ENODEV; - - ret = serial8250_request_std_resource(up); - if (ret == 0 && port->type == PORT_RSA) { - ret = serial8250_request_rsa_resource(up); - if (ret < 0) - serial8250_release_std_resource(up); - } - - return ret; -} - -static void serial8250_config_port(struct uart_port *port, int flags) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - int probeflags = PROBE_ANY; - int ret; - - if (port->type == PORT_8250_CIR) - return; - - /* - * Find the region that we can probe for. This in turn - * tells us whether we can probe for the type of port. - */ - ret = serial8250_request_std_resource(up); - if (ret < 0) - return; - - ret = serial8250_request_rsa_resource(up); - if (ret < 0) - probeflags &= ~PROBE_RSA; - - if (port->iotype != up->cur_iotype) - set_io_from_upio(port); - - if (flags & UART_CONFIG_TYPE) - autoconfig(up, probeflags); - - /* if access method is AU, it is a 16550 with a quirk */ - if (port->type == PORT_16550A && port->iotype == UPIO_AU) - up->bugs |= UART_BUG_NOMSR; - - if (port->type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ) - autoconfig_irq(up); - - if (port->type != PORT_RSA && probeflags & PROBE_RSA) - serial8250_release_rsa_resource(up); - if (port->type == PORT_UNKNOWN) - serial8250_release_std_resource(up); - - /* Fixme: probably not the best place for this */ - if ((port->type == PORT_XR17V35X) || - (port->type == PORT_XR17D15X)) - port->handle_irq = exar_handle_irq; -} - -static int -serial8250_verify_port(struct uart_port *port, struct serial_struct *ser) -{ - if (ser->irq >= nr_irqs || ser->irq < 0 || - ser->baud_base < 9600 || ser->type < PORT_UNKNOWN || - ser->type >= ARRAY_SIZE(uart_config) || ser->type == PORT_CIRRUS || - ser->type == PORT_STARTECH) - return -EINVAL; - return 0; -} - -static const char * -serial8250_type(struct uart_port *port) -{ - int type = port->type; - - if (type >= ARRAY_SIZE(uart_config)) - type = 0; - return uart_config[type].name; -} - -static struct uart_ops serial8250_pops = { - .tx_empty = serial8250_tx_empty, - .set_mctrl = serial8250_set_mctrl, - .get_mctrl = serial8250_get_mctrl, - .stop_tx = serial8250_stop_tx, - .start_tx = serial8250_start_tx, - .stop_rx = serial8250_stop_rx, - .enable_ms = serial8250_enable_ms, - .break_ctl = serial8250_break_ctl, - .startup = serial8250_startup, - .shutdown = serial8250_shutdown, - .set_termios = serial8250_set_termios, - .set_ldisc = serial8250_set_ldisc, - .pm = serial8250_pm, - .type = serial8250_type, - .release_port = serial8250_release_port, - .request_port = serial8250_request_port, - .config_port = serial8250_config_port, - .verify_port = serial8250_verify_port, -#ifdef CONFIG_CONSOLE_POLL - .poll_get_char = serial8250_get_poll_char, - .poll_put_char = serial8250_put_poll_char, -#endif -}; - -static struct uart_8250_port serial8250_ports[UART_NR]; - -static void (*serial8250_isa_config)(int port, struct uart_port *up, - unsigned short *capabilities); - -void serial8250_set_isa_configurator( - void (*v)(int port, struct uart_port *up, unsigned short *capabilities)) -{ - serial8250_isa_config = v; -} -EXPORT_SYMBOL(serial8250_set_isa_configurator); - -static void __init serial8250_isa_init_ports(void) -{ - struct uart_8250_port *up; - static int first = 1; - int i, irqflag = 0; - - if (!first) - return; - first = 0; - - if (nr_uarts > UART_NR) - nr_uarts = UART_NR; - - for (i = 0; i < nr_uarts; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - struct uart_port *port = &up->port; - - port->line = i; - spin_lock_init(&port->lock); - - init_timer(&up->timer); - up->timer.function = serial8250_timeout; - up->cur_iotype = 0xFF; - - /* - * ALPHA_KLUDGE_MCR needs to be killed. - */ - up->mcr_mask = ~ALPHA_KLUDGE_MCR; - up->mcr_force = ALPHA_KLUDGE_MCR; - - port->ops = &serial8250_pops; - } - - if (share_irqs) - irqflag = IRQF_SHARED; - - for (i = 0, up = serial8250_ports; - i < ARRAY_SIZE(old_serial_port) && i < nr_uarts; - i++, up++) { - struct uart_port *port = &up->port; - - port->iobase = old_serial_port[i].port; - port->irq = irq_canonicalize(old_serial_port[i].irq); - port->irqflags = old_serial_port[i].irqflags; - port->uartclk = old_serial_port[i].baud_base * 16; - port->flags = old_serial_port[i].flags; - port->hub6 = old_serial_port[i].hub6; - port->membase = old_serial_port[i].iomem_base; - port->iotype = old_serial_port[i].io_type; - port->regshift = old_serial_port[i].iomem_reg_shift; - set_io_from_upio(port); - port->irqflags |= irqflag; - if (serial8250_isa_config != NULL) - serial8250_isa_config(i, &up->port, &up->capabilities); - - } -} - -static void -serial8250_init_fixed_type_port(struct uart_8250_port *up, unsigned int type) -{ - up->port.type = type; - if (!up->port.fifosize) - up->port.fifosize = uart_config[type].fifo_size; - if (!up->tx_loadsz) - up->tx_loadsz = uart_config[type].tx_loadsz; - if (!up->capabilities) - up->capabilities = uart_config[type].flags; -} - -static void __init -serial8250_register_ports(struct uart_driver *drv, struct device *dev) -{ - int i; - - for (i = 0; i < nr_uarts; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - - if (up->port.dev) - continue; - - up->port.dev = dev; - - if (up->port.flags & UPF_FIXED_TYPE) - serial8250_init_fixed_type_port(up, up->port.type); - - uart_add_one_port(drv, &up->port); - } -} - -#ifdef CONFIG_SERIAL_8250_CONSOLE - -static void serial8250_console_putchar(struct uart_port *port, int ch) -{ - struct uart_8250_port *up = - container_of(port, struct uart_8250_port, port); - - wait_for_xmitr(up, UART_LSR_THRE); - serial_port_out(port, UART_TX, ch); -} - -/* - * Print a string to the serial port trying not to disturb - * any possible real use of the port... - * - * The console_lock must be held when we get here. - */ -static void -serial8250_console_write(struct console *co, const char *s, unsigned int count) -{ - struct uart_8250_port *up = &serial8250_ports[co->index]; - struct uart_port *port = &up->port; - unsigned long flags; - unsigned int ier; - int locked = 1; - - touch_nmi_watchdog(); - - local_irq_save(flags); - if (port->sysrq) { - /* serial8250_handle_irq() already took the lock */ - locked = 0; - } else if (oops_in_progress) { - locked = spin_trylock(&port->lock); - } else - spin_lock(&port->lock); - - /* - * First save the IER then disable the interrupts - */ - ier = serial_port_in(port, UART_IER); - - if (up->capabilities & UART_CAP_UUE) - serial_port_out(port, UART_IER, UART_IER_UUE); - else - serial_port_out(port, UART_IER, 0); - - uart_console_write(port, s, count, serial8250_console_putchar); - - /* - * Finally, wait for transmitter to become empty - * and restore the IER - */ - wait_for_xmitr(up, BOTH_EMPTY); - serial_port_out(port, UART_IER, ier); - - /* - * The receive handling will happen properly because the - * receive ready bit will still be set; it is not cleared - * on read. However, modem control will not, we must - * call it if we have saved something in the saved flags - * while processing with interrupts off. - */ - if (up->msr_saved_flags) - serial8250_modem_status(up); - - if (locked) - spin_unlock(&port->lock); - local_irq_restore(flags); -} - -static int __init serial8250_console_setup(struct console *co, char *options) -{ - struct uart_port *port; - int baud = 9600; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - /* - * Check whether an invalid uart number has been specified, and - * if so, search for the first available port that does have - * console support. - */ - if (co->index >= nr_uarts) - co->index = 0; - port = &serial8250_ports[co->index].port; - if (!port->iobase && !port->membase) - return -ENODEV; - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - - return uart_set_options(port, co, baud, parity, bits, flow); -} - -static int serial8250_console_early_setup(void) -{ - return serial8250_find_port_for_earlycon(); -} - -static struct console serial8250_console = { - .name = "ttyS", - .write = serial8250_console_write, - .device = uart_console_device, - .setup = serial8250_console_setup, - .early_setup = serial8250_console_early_setup, - .flags = CON_PRINTBUFFER | CON_ANYTIME, - .index = -1, - .data = &serial8250_reg, -}; - -static int __init serial8250_console_init(void) -{ - serial8250_isa_init_ports(); - register_console(&serial8250_console); - return 0; -} -console_initcall(serial8250_console_init); - -int serial8250_find_port(struct uart_port *p) -{ - int line; - struct uart_port *port; - - for (line = 0; line < nr_uarts; line++) { - port = &serial8250_ports[line].port; - if (uart_match_port(p, port)) - return line; - } - return -ENODEV; -} - -#define SERIAL8250_CONSOLE &serial8250_console -#else -#define SERIAL8250_CONSOLE NULL -#endif - -static struct uart_driver serial8250_reg = { - .owner = THIS_MODULE, - .driver_name = "serial", - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, - .cons = SERIAL8250_CONSOLE, -}; - -/* - * early_serial_setup - early registration for 8250 ports - * - * Setup an 8250 port structure prior to console initialisation. Use - * after console initialisation will cause undefined behaviour. - */ -int __init early_serial_setup(struct uart_port *port) -{ - struct uart_port *p; - - if (port->line >= ARRAY_SIZE(serial8250_ports)) - return -ENODEV; - - serial8250_isa_init_ports(); - p = &serial8250_ports[port->line].port; - p->iobase = port->iobase; - p->membase = port->membase; - p->irq = port->irq; - p->irqflags = port->irqflags; - p->uartclk = port->uartclk; - p->fifosize = port->fifosize; - p->regshift = port->regshift; - p->iotype = port->iotype; - p->flags = port->flags; - p->mapbase = port->mapbase; - p->private_data = port->private_data; - p->type = port->type; - p->line = port->line; - - set_io_from_upio(p); - if (port->serial_in) - p->serial_in = port->serial_in; - if (port->serial_out) - p->serial_out = port->serial_out; - if (port->handle_irq) - p->handle_irq = port->handle_irq; - else - p->handle_irq = serial8250_default_handle_irq; - - return 0; -} - -/** - * serial8250_suspend_port - suspend one serial port - * @line: serial line number - * - * Suspend one serial port. - */ -void serial8250_suspend_port(int line) -{ - uart_suspend_port(&serial8250_reg, &serial8250_ports[line].port); -} - -/** - * serial8250_resume_port - resume one serial port - * @line: serial line number - * - * Resume one serial port. - */ -void serial8250_resume_port(int line) -{ - struct uart_8250_port *up = &serial8250_ports[line]; - struct uart_port *port = &up->port; - - if (up->capabilities & UART_NATSEMI) { - /* Ensure it's still in high speed mode */ - serial_port_out(port, UART_LCR, 0xE0); - - ns16550a_goto_highspeed(up); - - serial_port_out(port, UART_LCR, 0); - port->uartclk = 921600*16; - } - uart_resume_port(&serial8250_reg, port); -} - -/* - * Register a set of serial devices attached to a platform device. The - * list is terminated with a zero flags entry, which means we expect - * all entries to have at least UPF_BOOT_AUTOCONF set. - */ -static int serial8250_probe(struct platform_device *dev) -{ - struct plat_serial8250_port *p = dev->dev.platform_data; - struct uart_8250_port uart; - int ret, i, irqflag = 0; - - memset(&uart, 0, sizeof(uart)); - - if (share_irqs) - irqflag = IRQF_SHARED; - - for (i = 0; p && p->flags != 0; p++, i++) { - uart.port.iobase = p->iobase; - uart.port.membase = p->membase; - uart.port.irq = p->irq; - uart.port.irqflags = p->irqflags; - uart.port.uartclk = p->uartclk; - uart.port.regshift = p->regshift; - uart.port.iotype = p->iotype; - uart.port.flags = p->flags; - uart.port.mapbase = p->mapbase; - uart.port.hub6 = p->hub6; - uart.port.private_data = p->private_data; - uart.port.type = p->type; - uart.port.serial_in = p->serial_in; - uart.port.serial_out = p->serial_out; - uart.port.handle_irq = p->handle_irq; - uart.port.handle_break = p->handle_break; - uart.port.set_termios = p->set_termios; - uart.port.pm = p->pm; - uart.port.dev = &dev->dev; - uart.port.irqflags |= irqflag; - ret = serial8250_register_8250_port(&uart); - if (ret < 0) { - dev_err(&dev->dev, "unable to register port at index %d " - "(IO%lx MEM%llx IRQ%d): %d\n", i, - p->iobase, (unsigned long long)p->mapbase, - p->irq, ret); - } - } - return 0; -} - -/* - * Remove serial ports registered against a platform device. - */ -static int serial8250_remove(struct platform_device *dev) -{ - int i; - - for (i = 0; i < nr_uarts; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - - if (up->port.dev == &dev->dev) - serial8250_unregister_port(i); - } - return 0; -} - -static int serial8250_suspend(struct platform_device *dev, pm_message_t state) -{ - int i; - - for (i = 0; i < UART_NR; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - - if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev) - uart_suspend_port(&serial8250_reg, &up->port); - } - - return 0; -} - -static int serial8250_resume(struct platform_device *dev) -{ - int i; - - for (i = 0; i < UART_NR; i++) { - struct uart_8250_port *up = &serial8250_ports[i]; - - if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev) - serial8250_resume_port(i); - } - - return 0; -} - -static struct platform_driver serial8250_isa_driver = { - .probe = serial8250_probe, - .remove = serial8250_remove, - .suspend = serial8250_suspend, - .resume = serial8250_resume, - .driver = { - .name = "serial8250", - .owner = THIS_MODULE, - }, -}; - -/* - * This "device" covers _all_ ISA 8250-compatible serial devices listed - * in the table in include/asm/serial.h - */ -static struct platform_device *serial8250_isa_devs; - -/* - * serial8250_register_8250_port and serial8250_unregister_port allows for - * 16x50 serial ports to be configured at run-time, to support PCMCIA - * modems and PCI multiport cards. - */ -static DEFINE_MUTEX(serial_mutex); - -static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port *port) -{ - int i; - - /* - * First, find a port entry which matches. - */ - for (i = 0; i < nr_uarts; i++) - if (uart_match_port(&serial8250_ports[i].port, port)) - return &serial8250_ports[i]; - - /* - * We didn't find a matching entry, so look for the first - * free entry. We look for one which hasn't been previously - * used (indicated by zero iobase). - */ - for (i = 0; i < nr_uarts; i++) - if (serial8250_ports[i].port.type == PORT_UNKNOWN && - serial8250_ports[i].port.iobase == 0) - return &serial8250_ports[i]; - - /* - * That also failed. Last resort is to find any entry which - * doesn't have a real port associated with it. - */ - for (i = 0; i < nr_uarts; i++) - if (serial8250_ports[i].port.type == PORT_UNKNOWN) - return &serial8250_ports[i]; - - return NULL; -} - -/** - * serial8250_register_8250_port - register a serial port - * @up: serial port template - * - * Configure the serial port specified by the request. If the - * port exists and is in use, it is hung up and unregistered - * first. - * - * The port is then probed and if necessary the IRQ is autodetected - * If this fails an error is returned. - * - * On success the port is ready to use and the line number is returned. - */ -int serial8250_register_8250_port(struct uart_8250_port *up) -{ - struct uart_8250_port *uart; - int ret = -ENOSPC; - - if (up->port.uartclk == 0) - return -EINVAL; - - mutex_lock(&serial_mutex); - - uart = serial8250_find_match_or_unused(&up->port); - if (uart && uart->port.type != PORT_8250_CIR) { - if (uart->port.dev) - uart_remove_one_port(&serial8250_reg, &uart->port); - - uart->port.iobase = up->port.iobase; - uart->port.membase = up->port.membase; - uart->port.irq = up->port.irq; - uart->port.irqflags = up->port.irqflags; - uart->port.uartclk = up->port.uartclk; - uart->port.fifosize = up->port.fifosize; - uart->port.regshift = up->port.regshift; - uart->port.iotype = up->port.iotype; - uart->port.flags = up->port.flags | UPF_BOOT_AUTOCONF; - uart->bugs = up->bugs; - uart->port.mapbase = up->port.mapbase; - uart->port.private_data = up->port.private_data; - uart->port.fifosize = up->port.fifosize; - uart->tx_loadsz = up->tx_loadsz; - uart->capabilities = up->capabilities; - - if (up->port.dev) - uart->port.dev = up->port.dev; - - if (up->port.flags & UPF_FIXED_TYPE) - serial8250_init_fixed_type_port(uart, up->port.type); - - set_io_from_upio(&uart->port); - /* Possibly override default I/O functions. */ - if (up->port.serial_in) - uart->port.serial_in = up->port.serial_in; - if (up->port.serial_out) - uart->port.serial_out = up->port.serial_out; - if (up->port.handle_irq) - uart->port.handle_irq = up->port.handle_irq; - /* Possibly override set_termios call */ - if (up->port.set_termios) - uart->port.set_termios = up->port.set_termios; - if (up->port.pm) - uart->port.pm = up->port.pm; - if (up->port.handle_break) - uart->port.handle_break = up->port.handle_break; - if (up->dl_read) - uart->dl_read = up->dl_read; - if (up->dl_write) - uart->dl_write = up->dl_write; - if (up->dma) - uart->dma = up->dma; - - if (serial8250_isa_config != NULL) - serial8250_isa_config(0, &uart->port, - &uart->capabilities); - - ret = uart_add_one_port(&serial8250_reg, &uart->port); - if (ret == 0) - ret = uart->port.line; - } - mutex_unlock(&serial_mutex); - - return ret; -} -EXPORT_SYMBOL(serial8250_register_8250_port); - -/** - * serial8250_unregister_port - remove a 16x50 serial port at runtime - * @line: serial line number - * - * Remove one serial port. This may not be called from interrupt - * context. We hand the port back to the our control. - */ -void serial8250_unregister_port(int line) -{ - struct uart_8250_port *uart = &serial8250_ports[line]; - - mutex_lock(&serial_mutex); - uart_remove_one_port(&serial8250_reg, &uart->port); - if (serial8250_isa_devs) { - uart->port.flags &= ~UPF_BOOT_AUTOCONF; - uart->port.type = PORT_UNKNOWN; - uart->port.dev = &serial8250_isa_devs->dev; - uart->capabilities = uart_config[uart->port.type].flags; - uart_add_one_port(&serial8250_reg, &uart->port); - } else { - uart->port.dev = NULL; - } - mutex_unlock(&serial_mutex); -} -EXPORT_SYMBOL(serial8250_unregister_port); - -static int __init serial8250_init(void) -{ - int ret; - - serial8250_isa_init_ports(); - - printk(KERN_INFO "Serial: 8250/16550 driver, " - "%d ports, IRQ sharing %sabled\n", nr_uarts, - share_irqs ? "en" : "dis"); - -#ifdef CONFIG_SPARC - ret = sunserial_register_minors(&serial8250_reg, UART_NR); -#else - serial8250_reg.nr = UART_NR; - ret = uart_register_driver(&serial8250_reg); -#endif - if (ret) - goto out; - - ret = serial8250_pnp_init(); - if (ret) - goto unreg_uart_drv; - - serial8250_isa_devs = platform_device_alloc("serial8250", - PLAT8250_DEV_LEGACY); - if (!serial8250_isa_devs) { - ret = -ENOMEM; - goto unreg_pnp; - } - - ret = platform_device_add(serial8250_isa_devs); - if (ret) - goto put_dev; - - serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev); - - ret = platform_driver_register(&serial8250_isa_driver); - if (ret == 0) - goto out; - - platform_device_del(serial8250_isa_devs); -put_dev: - platform_device_put(serial8250_isa_devs); -unreg_pnp: - serial8250_pnp_exit(); -unreg_uart_drv: -#ifdef CONFIG_SPARC - sunserial_unregister_minors(&serial8250_reg, UART_NR); -#else - uart_unregister_driver(&serial8250_reg); -#endif -out: - return ret; -} - -static void __exit serial8250_exit(void) -{ - struct platform_device *isa_dev = serial8250_isa_devs; - - /* - * This tells serial8250_unregister_port() not to re-register - * the ports (thereby making serial8250_isa_driver permanently - * in use.) - */ - serial8250_isa_devs = NULL; - - platform_driver_unregister(&serial8250_isa_driver); - platform_device_unregister(isa_dev); - - serial8250_pnp_exit(); - -#ifdef CONFIG_SPARC - sunserial_unregister_minors(&serial8250_reg, UART_NR); -#else - uart_unregister_driver(&serial8250_reg); -#endif -} - -module_init(serial8250_init); -module_exit(serial8250_exit); - -EXPORT_SYMBOL(serial8250_suspend_port); -EXPORT_SYMBOL(serial8250_resume_port); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Generic 8250/16x50 serial driver"); - -module_param(share_irqs, uint, 0644); -MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices" - " (unsafe)"); - -module_param(nr_uarts, uint, 0644); -MODULE_PARM_DESC(nr_uarts, "Maximum number of UARTs supported. (1-" __MODULE_STRING(CONFIG_SERIAL_8250_NR_UARTS) ")"); - -module_param(skip_txen_test, uint, 0644); -MODULE_PARM_DESC(skip_txen_test, "Skip checking for the TXEN bug at init time"); - -#ifdef CONFIG_SERIAL_8250_RSA -module_param_array(probe_rsa, ulong, &probe_rsa_count, 0444); -MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA"); -#endif -MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR); - -#ifndef MODULE -/* This module was renamed to 8250_core in 3.7. Keep the old "8250" name - * working as well for the module options so we don't break people. We - * need to keep the names identical and the convenient macros will happily - * refuse to let us do that by failing the build with redefinition errors - * of global variables. So we stick them inside a dummy function to avoid - * those conflicts. The options still get parsed, and the redefined - * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive. - * - * This is hacky. I'm sorry. - */ -static void __used s8250_options(void) -{ -#undef MODULE_PARAM_PREFIX -#define MODULE_PARAM_PREFIX "8250." - - module_param_cb(share_irqs, ¶m_ops_uint, &share_irqs, 0644); - module_param_cb(nr_uarts, ¶m_ops_uint, &nr_uarts, 0644); - module_param_cb(skip_txen_test, ¶m_ops_uint, &skip_txen_test, 0644); -#ifdef CONFIG_SERIAL_8250_RSA - __module_param_call(MODULE_PARAM_PREFIX, probe_rsa, - ¶m_array_ops, .arr = &__param_arr_probe_rsa, - 0444, -1); -#endif -} -#else -MODULE_ALIAS("8250"); -#endif diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c new file mode 100644 index 0000000..2d563cb --- /dev/null +++ b/drivers/tty/serial/8250/8250_core.c @@ -0,0 +1,3448 @@ +/* + * Driver for 8250/16550-type serial ports + * + * Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o. + * + * Copyright (C) 2001 Russell King. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * A note about mapbase / membase + * + * mapbase is the physical address of the IO port. + * membase is an 'ioremapped' cookie. + */ + +#if defined(CONFIG_SERIAL_8250_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) +#define SUPPORT_SYSRQ +#endif + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#ifdef CONFIG_SPARC +#include +#endif + +#include +#include + +#include "8250.h" + +/* + * Configuration: + * share_irqs - whether we pass IRQF_SHARED to request_irq(). This option + * is unsafe when used on edge-triggered interrupts. + */ +static unsigned int share_irqs = SERIAL8250_SHARE_IRQS; + +static unsigned int nr_uarts = CONFIG_SERIAL_8250_RUNTIME_UARTS; + +static struct uart_driver serial8250_reg; + +static int serial_index(struct uart_port *port) +{ + return (serial8250_reg.minor - 64) + port->line; +} + +static unsigned int skip_txen_test; /* force skip of txen test at init time */ + +/* + * Debugging. + */ +#if 0 +#define DEBUG_AUTOCONF(fmt...) printk(fmt) +#else +#define DEBUG_AUTOCONF(fmt...) do { } while (0) +#endif + +#if 0 +#define DEBUG_INTR(fmt...) printk(fmt) +#else +#define DEBUG_INTR(fmt...) do { } while (0) +#endif + +#define PASS_LIMIT 512 + +#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) + + +#ifdef CONFIG_SERIAL_8250_DETECT_IRQ +#define CONFIG_SERIAL_DETECT_IRQ 1 +#endif +#ifdef CONFIG_SERIAL_8250_MANY_PORTS +#define CONFIG_SERIAL_MANY_PORTS 1 +#endif + +/* + * HUB6 is always on. This will be removed once the header + * files have been cleaned. + */ +#define CONFIG_HUB6 1 + +#include +/* + * SERIAL_PORT_DFNS tells us about built-in ports that have no + * standard enumeration mechanism. Platforms that can find all + * serial ports via mechanisms like ACPI or PCI need not supply it. + */ +#ifndef SERIAL_PORT_DFNS +#define SERIAL_PORT_DFNS +#endif + +static const struct old_serial_port old_serial_port[] = { + SERIAL_PORT_DFNS /* defined in asm/serial.h */ +}; + +#define UART_NR CONFIG_SERIAL_8250_NR_UARTS + +#ifdef CONFIG_SERIAL_8250_RSA + +#define PORT_RSA_MAX 4 +static unsigned long probe_rsa[PORT_RSA_MAX]; +static unsigned int probe_rsa_count; +#endif /* CONFIG_SERIAL_8250_RSA */ + +struct irq_info { + struct hlist_node node; + int irq; + spinlock_t lock; /* Protects list not the hash */ + struct list_head *head; +}; + +#define NR_IRQ_HASH 32 /* Can be adjusted later */ +static struct hlist_head irq_lists[NR_IRQ_HASH]; +static DEFINE_MUTEX(hash_mutex); /* Used to walk the hash */ + +/* + * Here we define the default xmit fifo size used for each type of UART. + */ +static const struct serial8250_config uart_config[] = { + [PORT_UNKNOWN] = { + .name = "unknown", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_8250] = { + .name = "8250", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_16450] = { + .name = "16450", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_16550] = { + .name = "16550", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_16550A] = { + .name = "16550A", + .fifo_size = 16, + .tx_loadsz = 16, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO, + }, + [PORT_CIRRUS] = { + .name = "Cirrus", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_16650] = { + .name = "ST16650", + .fifo_size = 1, + .tx_loadsz = 1, + .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, + }, + [PORT_16650V2] = { + .name = "ST16650V2", + .fifo_size = 32, + .tx_loadsz = 16, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | + UART_FCR_T_TRIG_00, + .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, + }, + [PORT_16750] = { + .name = "TI16750", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10 | + UART_FCR7_64BYTE, + .flags = UART_CAP_FIFO | UART_CAP_SLEEP | UART_CAP_AFE, + }, + [PORT_STARTECH] = { + .name = "Startech", + .fifo_size = 1, + .tx_loadsz = 1, + }, + [PORT_16C950] = { + .name = "16C950/954", + .fifo_size = 128, + .tx_loadsz = 128, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + /* UART_CAP_EFR breaks billionon CF bluetooth card. */ + .flags = UART_CAP_FIFO | UART_CAP_SLEEP, + }, + [PORT_16654] = { + .name = "ST16654", + .fifo_size = 64, + .tx_loadsz = 32, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | + UART_FCR_T_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, + }, + [PORT_16850] = { + .name = "XR16850", + .fifo_size = 128, + .tx_loadsz = 128, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_EFR | UART_CAP_SLEEP, + }, + [PORT_RSA] = { + .name = "RSA", + .fifo_size = 2048, + .tx_loadsz = 2048, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_11, + .flags = UART_CAP_FIFO, + }, + [PORT_NS16550A] = { + .name = "NS16550A", + .fifo_size = 16, + .tx_loadsz = 16, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_NATSEMI, + }, + [PORT_XSCALE] = { + .name = "XScale", + .fifo_size = 32, + .tx_loadsz = 32, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_UUE | UART_CAP_RTOIE, + }, + [PORT_OCTEON] = { + .name = "OCTEON", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO, + }, + [PORT_AR7] = { + .name = "AR7", + .fifo_size = 16, + .tx_loadsz = 16, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_U6_16550A] = { + .name = "U6_16550A", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_TEGRA] = { + .name = "Tegra", + .fifo_size = 32, + .tx_loadsz = 8, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_01 | + UART_FCR_T_TRIG_01, + .flags = UART_CAP_FIFO | UART_CAP_RTOIE, + }, + [PORT_XR17D15X] = { + .name = "XR17D15X", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE | UART_CAP_EFR | + UART_CAP_SLEEP, + }, + [PORT_XR17V35X] = { + .name = "XR17V35X", + .fifo_size = 256, + .tx_loadsz = 256, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_11 | + UART_FCR_T_TRIG_11, + .flags = UART_CAP_FIFO | UART_CAP_AFE | UART_CAP_EFR | + UART_CAP_SLEEP, + }, + [PORT_LPC3220] = { + .name = "LPC3220", + .fifo_size = 64, + .tx_loadsz = 32, + .fcr = UART_FCR_DMA_SELECT | UART_FCR_ENABLE_FIFO | + UART_FCR_R_TRIG_00 | UART_FCR_T_TRIG_00, + .flags = UART_CAP_FIFO, + }, + [PORT_BRCM_TRUMANAGE] = { + .name = "TruManage", + .fifo_size = 1, + .tx_loadsz = 1024, + .flags = UART_CAP_HFIFO, + }, + [PORT_8250_CIR] = { + .name = "CIR port" + }, + [PORT_ALTR_16550_F32] = { + .name = "Altera 16550 FIFO32", + .fifo_size = 32, + .tx_loadsz = 32, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_ALTR_16550_F64] = { + .name = "Altera 16550 FIFO64", + .fifo_size = 64, + .tx_loadsz = 64, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, + [PORT_ALTR_16550_F128] = { + .name = "Altera 16550 FIFO128", + .fifo_size = 128, + .tx_loadsz = 128, + .fcr = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10, + .flags = UART_CAP_FIFO | UART_CAP_AFE, + }, +}; + +/* Uart divisor latch read */ +static int default_serial_dl_read(struct uart_8250_port *up) +{ + return serial_in(up, UART_DLL) | serial_in(up, UART_DLM) << 8; +} + +/* Uart divisor latch write */ +static void default_serial_dl_write(struct uart_8250_port *up, int value) +{ + serial_out(up, UART_DLL, value & 0xff); + serial_out(up, UART_DLM, value >> 8 & 0xff); +} + +#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) + +/* Au1x00/RT288x UART hardware has a weird register layout */ +static const u8 au_io_in_map[] = { + [UART_RX] = 0, + [UART_IER] = 2, + [UART_IIR] = 3, + [UART_LCR] = 5, + [UART_MCR] = 6, + [UART_LSR] = 7, + [UART_MSR] = 8, +}; + +static const u8 au_io_out_map[] = { + [UART_TX] = 1, + [UART_IER] = 2, + [UART_FCR] = 4, + [UART_LCR] = 5, + [UART_MCR] = 6, +}; + +static unsigned int au_serial_in(struct uart_port *p, int offset) +{ + offset = au_io_in_map[offset] << p->regshift; + return __raw_readl(p->membase + offset); +} + +static void au_serial_out(struct uart_port *p, int offset, int value) +{ + offset = au_io_out_map[offset] << p->regshift; + __raw_writel(value, p->membase + offset); +} + +/* Au1x00 haven't got a standard divisor latch */ +static int au_serial_dl_read(struct uart_8250_port *up) +{ + return __raw_readl(up->port.membase + 0x28); +} + +static void au_serial_dl_write(struct uart_8250_port *up, int value) +{ + __raw_writel(value, up->port.membase + 0x28); +} + +#endif + +static unsigned int hub6_serial_in(struct uart_port *p, int offset) +{ + offset = offset << p->regshift; + outb(p->hub6 - 1 + offset, p->iobase); + return inb(p->iobase + 1); +} + +static void hub6_serial_out(struct uart_port *p, int offset, int value) +{ + offset = offset << p->regshift; + outb(p->hub6 - 1 + offset, p->iobase); + outb(value, p->iobase + 1); +} + +static unsigned int mem_serial_in(struct uart_port *p, int offset) +{ + offset = offset << p->regshift; + return readb(p->membase + offset); +} + +static void mem_serial_out(struct uart_port *p, int offset, int value) +{ + offset = offset << p->regshift; + writeb(value, p->membase + offset); +} + +static void mem32_serial_out(struct uart_port *p, int offset, int value) +{ + offset = offset << p->regshift; + writel(value, p->membase + offset); +} + +static unsigned int mem32_serial_in(struct uart_port *p, int offset) +{ + offset = offset << p->regshift; + return readl(p->membase + offset); +} + +static unsigned int io_serial_in(struct uart_port *p, int offset) +{ + offset = offset << p->regshift; + return inb(p->iobase + offset); +} + +static void io_serial_out(struct uart_port *p, int offset, int value) +{ + offset = offset << p->regshift; + outb(value, p->iobase + offset); +} + +static int serial8250_default_handle_irq(struct uart_port *port); +static int exar_handle_irq(struct uart_port *port); + +static void set_io_from_upio(struct uart_port *p) +{ + struct uart_8250_port *up = + container_of(p, struct uart_8250_port, port); + + up->dl_read = default_serial_dl_read; + up->dl_write = default_serial_dl_write; + + switch (p->iotype) { + case UPIO_HUB6: + p->serial_in = hub6_serial_in; + p->serial_out = hub6_serial_out; + break; + + case UPIO_MEM: + p->serial_in = mem_serial_in; + p->serial_out = mem_serial_out; + break; + + case UPIO_MEM32: + p->serial_in = mem32_serial_in; + p->serial_out = mem32_serial_out; + break; + +#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) + case UPIO_AU: + p->serial_in = au_serial_in; + p->serial_out = au_serial_out; + up->dl_read = au_serial_dl_read; + up->dl_write = au_serial_dl_write; + break; +#endif + + default: + p->serial_in = io_serial_in; + p->serial_out = io_serial_out; + break; + } + /* Remember loaded iotype */ + up->cur_iotype = p->iotype; + p->handle_irq = serial8250_default_handle_irq; +} + +static void +serial_port_out_sync(struct uart_port *p, int offset, int value) +{ + switch (p->iotype) { + case UPIO_MEM: + case UPIO_MEM32: + case UPIO_AU: + p->serial_out(p, offset, value); + p->serial_in(p, UART_LCR); /* safe, no side-effects */ + break; + default: + p->serial_out(p, offset, value); + } +} + +/* + * For the 16C950 + */ +static void serial_icr_write(struct uart_8250_port *up, int offset, int value) +{ + serial_out(up, UART_SCR, offset); + serial_out(up, UART_ICR, value); +} + +static unsigned int serial_icr_read(struct uart_8250_port *up, int offset) +{ + unsigned int value; + + serial_icr_write(up, UART_ACR, up->acr | UART_ACR_ICRRD); + serial_out(up, UART_SCR, offset); + value = serial_in(up, UART_ICR); + serial_icr_write(up, UART_ACR, up->acr); + + return value; +} + +/* + * FIFO support. + */ +static void serial8250_clear_fifos(struct uart_8250_port *p) +{ + if (p->capabilities & UART_CAP_FIFO) { + serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO); + serial_out(p, UART_FCR, UART_FCR_ENABLE_FIFO | + UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); + serial_out(p, UART_FCR, 0); + } +} + +void serial8250_clear_and_reinit_fifos(struct uart_8250_port *p) +{ + unsigned char fcr; + + serial8250_clear_fifos(p); + fcr = uart_config[p->port.type].fcr; + serial_out(p, UART_FCR, fcr); +} +EXPORT_SYMBOL_GPL(serial8250_clear_and_reinit_fifos); + +/* + * IER sleep support. UARTs which have EFRs need the "extended + * capability" bit enabled. Note that on XR16C850s, we need to + * reset LCR to write to IER. + */ +static void serial8250_set_sleep(struct uart_8250_port *p, int sleep) +{ + /* + * Exar UARTs have a SLEEP register that enables or disables + * each UART to enter sleep mode separately. On the XR17V35x the + * register is accessible to each UART at the UART_EXAR_SLEEP + * offset but the UART channel may only write to the corresponding + * bit. + */ + if ((p->port.type == PORT_XR17V35X) || + (p->port.type == PORT_XR17D15X)) { + serial_out(p, UART_EXAR_SLEEP, 0xff); + return; + } + + if (p->capabilities & UART_CAP_SLEEP) { + if (p->capabilities & UART_CAP_EFR) { + serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(p, UART_EFR, UART_EFR_ECB); + serial_out(p, UART_LCR, 0); + } + serial_out(p, UART_IER, sleep ? UART_IERX_SLEEP : 0); + if (p->capabilities & UART_CAP_EFR) { + serial_out(p, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(p, UART_EFR, 0); + serial_out(p, UART_LCR, 0); + } + } +} + +#ifdef CONFIG_SERIAL_8250_RSA +/* + * Attempts to turn on the RSA FIFO. Returns zero on failure. + * We set the port uart clock rate if we succeed. + */ +static int __enable_rsa(struct uart_8250_port *up) +{ + unsigned char mode; + int result; + + mode = serial_in(up, UART_RSA_MSR); + result = mode & UART_RSA_MSR_FIFO; + + if (!result) { + serial_out(up, UART_RSA_MSR, mode | UART_RSA_MSR_FIFO); + mode = serial_in(up, UART_RSA_MSR); + result = mode & UART_RSA_MSR_FIFO; + } + + if (result) + up->port.uartclk = SERIAL_RSA_BAUD_BASE * 16; + + return result; +} + +static void enable_rsa(struct uart_8250_port *up) +{ + if (up->port.type == PORT_RSA) { + if (up->port.uartclk != SERIAL_RSA_BAUD_BASE * 16) { + spin_lock_irq(&up->port.lock); + __enable_rsa(up); + spin_unlock_irq(&up->port.lock); + } + if (up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) + serial_out(up, UART_RSA_FRR, 0); + } +} + +/* + * Attempts to turn off the RSA FIFO. Returns zero on failure. + * It is unknown why interrupts were disabled in here. However, + * the caller is expected to preserve this behaviour by grabbing + * the spinlock before calling this function. + */ +static void disable_rsa(struct uart_8250_port *up) +{ + unsigned char mode; + int result; + + if (up->port.type == PORT_RSA && + up->port.uartclk == SERIAL_RSA_BAUD_BASE * 16) { + spin_lock_irq(&up->port.lock); + + mode = serial_in(up, UART_RSA_MSR); + result = !(mode & UART_RSA_MSR_FIFO); + + if (!result) { + serial_out(up, UART_RSA_MSR, mode & ~UART_RSA_MSR_FIFO); + mode = serial_in(up, UART_RSA_MSR); + result = !(mode & UART_RSA_MSR_FIFO); + } + + if (result) + up->port.uartclk = SERIAL_RSA_BAUD_BASE_LO * 16; + spin_unlock_irq(&up->port.lock); + } +} +#endif /* CONFIG_SERIAL_8250_RSA */ + +/* + * This is a quickie test to see how big the FIFO is. + * It doesn't work at all the time, more's the pity. + */ +static int size_fifo(struct uart_8250_port *up) +{ + unsigned char old_fcr, old_mcr, old_lcr; + unsigned short old_dl; + int count; + + old_lcr = serial_in(up, UART_LCR); + serial_out(up, UART_LCR, 0); + old_fcr = serial_in(up, UART_FCR); + old_mcr = serial_in(up, UART_MCR); + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | + UART_FCR_CLEAR_RCVR | UART_FCR_CLEAR_XMIT); + serial_out(up, UART_MCR, UART_MCR_LOOP); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + old_dl = serial_dl_read(up); + serial_dl_write(up, 0x0001); + serial_out(up, UART_LCR, 0x03); + for (count = 0; count < 256; count++) + serial_out(up, UART_TX, count); + mdelay(20);/* FIXME - schedule_timeout */ + for (count = 0; (serial_in(up, UART_LSR) & UART_LSR_DR) && + (count < 256); count++) + serial_in(up, UART_RX); + serial_out(up, UART_FCR, old_fcr); + serial_out(up, UART_MCR, old_mcr); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + serial_dl_write(up, old_dl); + serial_out(up, UART_LCR, old_lcr); + + return count; +} + +/* + * Read UART ID using the divisor method - set DLL and DLM to zero + * and the revision will be in DLL and device type in DLM. We + * preserve the device state across this. + */ +static unsigned int autoconfig_read_divisor_id(struct uart_8250_port *p) +{ + unsigned char old_dll, old_dlm, old_lcr; + unsigned int id; + + old_lcr = serial_in(p, UART_LCR); + serial_out(p, UART_LCR, UART_LCR_CONF_MODE_A); + + old_dll = serial_in(p, UART_DLL); + old_dlm = serial_in(p, UART_DLM); + + serial_out(p, UART_DLL, 0); + serial_out(p, UART_DLM, 0); + + id = serial_in(p, UART_DLL) | serial_in(p, UART_DLM) << 8; + + serial_out(p, UART_DLL, old_dll); + serial_out(p, UART_DLM, old_dlm); + serial_out(p, UART_LCR, old_lcr); + + return id; +} + +/* + * This is a helper routine to autodetect StarTech/Exar/Oxsemi UART's. + * When this function is called we know it is at least a StarTech + * 16650 V2, but it might be one of several StarTech UARTs, or one of + * its clones. (We treat the broken original StarTech 16650 V1 as a + * 16550, and why not? Startech doesn't seem to even acknowledge its + * existence.) + * + * What evil have men's minds wrought... + */ +static void autoconfig_has_efr(struct uart_8250_port *up) +{ + unsigned int id1, id2, id3, rev; + + /* + * Everything with an EFR has SLEEP + */ + up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; + + /* + * First we check to see if it's an Oxford Semiconductor UART. + * + * If we have to do this here because some non-National + * Semiconductor clone chips lock up if you try writing to the + * LSR register (which serial_icr_read does) + */ + + /* + * Check for Oxford Semiconductor 16C950. + * + * EFR [4] must be set else this test fails. + * + * This shouldn't be necessary, but Mike Hudson (Exoray@isys.ca) + * claims that it's needed for 952 dual UART's (which are not + * recommended for new designs). + */ + up->acr = 0; + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, UART_EFR_ECB); + serial_out(up, UART_LCR, 0x00); + id1 = serial_icr_read(up, UART_ID1); + id2 = serial_icr_read(up, UART_ID2); + id3 = serial_icr_read(up, UART_ID3); + rev = serial_icr_read(up, UART_REV); + + DEBUG_AUTOCONF("950id=%02x:%02x:%02x:%02x ", id1, id2, id3, rev); + + if (id1 == 0x16 && id2 == 0xC9 && + (id3 == 0x50 || id3 == 0x52 || id3 == 0x54)) { + up->port.type = PORT_16C950; + + /* + * Enable work around for the Oxford Semiconductor 952 rev B + * chip which causes it to seriously miscalculate baud rates + * when DLL is 0. + */ + if (id3 == 0x52 && rev == 0x01) + up->bugs |= UART_BUG_QUOT; + return; + } + + /* + * We check for a XR16C850 by setting DLL and DLM to 0, and then + * reading back DLL and DLM. The chip type depends on the DLM + * value read back: + * 0x10 - XR16C850 and the DLL contains the chip revision. + * 0x12 - XR16C2850. + * 0x14 - XR16C854. + */ + id1 = autoconfig_read_divisor_id(up); + DEBUG_AUTOCONF("850id=%04x ", id1); + + id2 = id1 >> 8; + if (id2 == 0x10 || id2 == 0x12 || id2 == 0x14) { + up->port.type = PORT_16850; + return; + } + + /* + * It wasn't an XR16C850. + * + * We distinguish between the '654 and the '650 by counting + * how many bytes are in the FIFO. I'm using this for now, + * since that's the technique that was sent to me in the + * serial driver update, but I'm not convinced this works. + * I've had problems doing this in the past. -TYT + */ + if (size_fifo(up) == 64) + up->port.type = PORT_16654; + else + up->port.type = PORT_16650V2; +} + +/* + * We detected a chip without a FIFO. Only two fall into + * this category - the original 8250 and the 16450. The + * 16450 has a scratch register (accessible with LCR=0) + */ +static void autoconfig_8250(struct uart_8250_port *up) +{ + unsigned char scratch, status1, status2; + + up->port.type = PORT_8250; + + scratch = serial_in(up, UART_SCR); + serial_out(up, UART_SCR, 0xa5); + status1 = serial_in(up, UART_SCR); + serial_out(up, UART_SCR, 0x5a); + status2 = serial_in(up, UART_SCR); + serial_out(up, UART_SCR, scratch); + + if (status1 == 0xa5 && status2 == 0x5a) + up->port.type = PORT_16450; +} + +static int broken_efr(struct uart_8250_port *up) +{ + /* + * Exar ST16C2550 "A2" devices incorrectly detect as + * having an EFR, and report an ID of 0x0201. See + * http://linux.derkeiler.com/Mailing-Lists/Kernel/2004-11/4812.html + */ + if (autoconfig_read_divisor_id(up) == 0x0201 && size_fifo(up) == 16) + return 1; + + return 0; +} + +static inline int ns16550a_goto_highspeed(struct uart_8250_port *up) +{ + unsigned char status; + + status = serial_in(up, 0x04); /* EXCR2 */ +#define PRESL(x) ((x) & 0x30) + if (PRESL(status) == 0x10) { + /* already in high speed mode */ + return 0; + } else { + status &= ~0xB0; /* Disable LOCK, mask out PRESL[01] */ + status |= 0x10; /* 1.625 divisor for baud_base --> 921600 */ + serial_out(up, 0x04, status); + } + return 1; +} + +/* + * We know that the chip has FIFOs. Does it have an EFR? The + * EFR is located in the same register position as the IIR and + * we know the top two bits of the IIR are currently set. The + * EFR should contain zero. Try to read the EFR. + */ +static void autoconfig_16550a(struct uart_8250_port *up) +{ + unsigned char status1, status2; + unsigned int iersave; + + up->port.type = PORT_16550A; + up->capabilities |= UART_CAP_FIFO; + + /* + * XR17V35x UARTs have an extra divisor register, DLD + * that gets enabled with when DLAB is set which will + * cause the device to incorrectly match and assign + * port type to PORT_16650. The EFR for this UART is + * found at offset 0x09. Instead check the Deice ID (DVID) + * register for a 2, 4 or 8 port UART. + */ + if (up->port.flags & UPF_EXAR_EFR) { + status1 = serial_in(up, UART_EXAR_DVID); + if (status1 == 0x82 || status1 == 0x84 || status1 == 0x88) { + DEBUG_AUTOCONF("Exar XR17V35x "); + up->port.type = PORT_XR17V35X; + up->capabilities |= UART_CAP_AFE | UART_CAP_EFR | + UART_CAP_SLEEP; + + return; + } + + } + + /* + * Check for presence of the EFR when DLAB is set. + * Only ST16C650V1 UARTs pass this test. + */ + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + if (serial_in(up, UART_EFR) == 0) { + serial_out(up, UART_EFR, 0xA8); + if (serial_in(up, UART_EFR) != 0) { + DEBUG_AUTOCONF("EFRv1 "); + up->port.type = PORT_16650; + up->capabilities |= UART_CAP_EFR | UART_CAP_SLEEP; + } else { + DEBUG_AUTOCONF("Motorola 8xxx DUART "); + } + serial_out(up, UART_EFR, 0); + return; + } + + /* + * Maybe it requires 0xbf to be written to the LCR. + * (other ST16C650V2 UARTs, TI16C752A, etc) + */ + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + if (serial_in(up, UART_EFR) == 0 && !broken_efr(up)) { + DEBUG_AUTOCONF("EFRv2 "); + autoconfig_has_efr(up); + return; + } + + /* + * Check for a National Semiconductor SuperIO chip. + * Attempt to switch to bank 2, read the value of the LOOP bit + * from EXCR1. Switch back to bank 0, change it in MCR. Then + * switch back to bank 2, read it from EXCR1 again and check + * it's changed. If so, set baud_base in EXCR2 to 921600. -- dwmw2 + */ + serial_out(up, UART_LCR, 0); + status1 = serial_in(up, UART_MCR); + serial_out(up, UART_LCR, 0xE0); + status2 = serial_in(up, 0x02); /* EXCR1 */ + + if (!((status2 ^ status1) & UART_MCR_LOOP)) { + serial_out(up, UART_LCR, 0); + serial_out(up, UART_MCR, status1 ^ UART_MCR_LOOP); + serial_out(up, UART_LCR, 0xE0); + status2 = serial_in(up, 0x02); /* EXCR1 */ + serial_out(up, UART_LCR, 0); + serial_out(up, UART_MCR, status1); + + if ((status2 ^ status1) & UART_MCR_LOOP) { + unsigned short quot; + + serial_out(up, UART_LCR, 0xE0); + + quot = serial_dl_read(up); + quot <<= 3; + + if (ns16550a_goto_highspeed(up)) + serial_dl_write(up, quot); + + serial_out(up, UART_LCR, 0); + + up->port.uartclk = 921600*16; + up->port.type = PORT_NS16550A; + up->capabilities |= UART_NATSEMI; + return; + } + } + + /* + * No EFR. Try to detect a TI16750, which only sets bit 5 of + * the IIR when 64 byte FIFO mode is enabled when DLAB is set. + * Try setting it with and without DLAB set. Cheap clones + * set bit 5 without DLAB set. + */ + serial_out(up, UART_LCR, 0); + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); + status1 = serial_in(up, UART_IIR) >> 5; + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A); + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO | UART_FCR7_64BYTE); + status2 = serial_in(up, UART_IIR) >> 5; + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); + serial_out(up, UART_LCR, 0); + + DEBUG_AUTOCONF("iir1=%d iir2=%d ", status1, status2); + + if (status1 == 6 && status2 == 7) { + up->port.type = PORT_16750; + up->capabilities |= UART_CAP_AFE | UART_CAP_SLEEP; + return; + } + + /* + * Try writing and reading the UART_IER_UUE bit (b6). + * If it works, this is probably one of the Xscale platform's + * internal UARTs. + * We're going to explicitly set the UUE bit to 0 before + * trying to write and read a 1 just to make sure it's not + * already a 1 and maybe locked there before we even start start. + */ + iersave = serial_in(up, UART_IER); + serial_out(up, UART_IER, iersave & ~UART_IER_UUE); + if (!(serial_in(up, UART_IER) & UART_IER_UUE)) { + /* + * OK it's in a known zero state, try writing and reading + * without disturbing the current state of the other bits. + */ + serial_out(up, UART_IER, iersave | UART_IER_UUE); + if (serial_in(up, UART_IER) & UART_IER_UUE) { + /* + * It's an Xscale. + * We'll leave the UART_IER_UUE bit set to 1 (enabled). + */ + DEBUG_AUTOCONF("Xscale "); + up->port.type = PORT_XSCALE; + up->capabilities |= UART_CAP_UUE | UART_CAP_RTOIE; + return; + } + } else { + /* + * If we got here we couldn't force the IER_UUE bit to 0. + * Log it and continue. + */ + DEBUG_AUTOCONF("Couldn't force IER_UUE to 0 "); + } + serial_out(up, UART_IER, iersave); + + /* + * Exar uarts have EFR in a weird location + */ + if (up->port.flags & UPF_EXAR_EFR) { + DEBUG_AUTOCONF("Exar XR17D15x "); + up->port.type = PORT_XR17D15X; + up->capabilities |= UART_CAP_AFE | UART_CAP_EFR | + UART_CAP_SLEEP; + + return; + } + + /* + * We distinguish between 16550A and U6 16550A by counting + * how many bytes are in the FIFO. + */ + if (up->port.type == PORT_16550A && size_fifo(up) == 64) { + up->port.type = PORT_U6_16550A; + up->capabilities |= UART_CAP_AFE; + } +} + +/* + * This routine is called by rs_init() to initialize a specific serial + * port. It determines what type of UART chip this serial port is + * using: 8250, 16450, 16550, 16550A. The important question is + * whether or not this UART is a 16550A or not, since this will + * determine whether or not we can use its FIFO features or not. + */ +static void autoconfig(struct uart_8250_port *up, unsigned int probeflags) +{ + unsigned char status1, scratch, scratch2, scratch3; + unsigned char save_lcr, save_mcr; + struct uart_port *port = &up->port; + unsigned long flags; + unsigned int old_capabilities; + + if (!port->iobase && !port->mapbase && !port->membase) + return; + + DEBUG_AUTOCONF("ttyS%d: autoconf (0x%04lx, 0x%p): ", + serial_index(port), port->iobase, port->membase); + + /* + * We really do need global IRQs disabled here - we're going to + * be frobbing the chips IRQ enable register to see if it exists. + */ + spin_lock_irqsave(&port->lock, flags); + + up->capabilities = 0; + up->bugs = 0; + + if (!(port->flags & UPF_BUGGY_UART)) { + /* + * Do a simple existence test first; if we fail this, + * there's no point trying anything else. + * + * 0x80 is used as a nonsense port to prevent against + * false positives due to ISA bus float. The + * assumption is that 0x80 is a non-existent port; + * which should be safe since include/asm/io.h also + * makes this assumption. + * + * Note: this is safe as long as MCR bit 4 is clear + * and the device is in "PC" mode. + */ + scratch = serial_in(up, UART_IER); + serial_out(up, UART_IER, 0); +#ifdef __i386__ + outb(0xff, 0x080); +#endif + /* + * Mask out IER[7:4] bits for test as some UARTs (e.g. TL + * 16C754B) allow only to modify them if an EFR bit is set. + */ + scratch2 = serial_in(up, UART_IER) & 0x0f; + serial_out(up, UART_IER, 0x0F); +#ifdef __i386__ + outb(0, 0x080); +#endif + scratch3 = serial_in(up, UART_IER) & 0x0f; + serial_out(up, UART_IER, scratch); + if (scratch2 != 0 || scratch3 != 0x0F) { + /* + * We failed; there's nothing here + */ + spin_unlock_irqrestore(&port->lock, flags); + DEBUG_AUTOCONF("IER test failed (%02x, %02x) ", + scratch2, scratch3); + goto out; + } + } + + save_mcr = serial_in(up, UART_MCR); + save_lcr = serial_in(up, UART_LCR); + + /* + * Check to see if a UART is really there. Certain broken + * internal modems based on the Rockwell chipset fail this + * test, because they apparently don't implement the loopback + * test mode. So this test is skipped on the COM 1 through + * COM 4 ports. This *should* be safe, since no board + * manufacturer would be stupid enough to design a board + * that conflicts with COM 1-4 --- we hope! + */ + if (!(port->flags & UPF_SKIP_TEST)) { + serial_out(up, UART_MCR, UART_MCR_LOOP | 0x0A); + status1 = serial_in(up, UART_MSR) & 0xF0; + serial_out(up, UART_MCR, save_mcr); + if (status1 != 0x90) { + spin_unlock_irqrestore(&port->lock, flags); + DEBUG_AUTOCONF("LOOP test failed (%02x) ", + status1); + goto out; + } + } + + /* + * We're pretty sure there's a port here. Lets find out what + * type of port it is. The IIR top two bits allows us to find + * out if it's 8250 or 16450, 16550, 16550A or later. This + * determines what we test for next. + * + * We also initialise the EFR (if any) to zero for later. The + * EFR occupies the same register location as the FCR and IIR. + */ + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + serial_out(up, UART_EFR, 0); + serial_out(up, UART_LCR, 0); + + serial_out(up, UART_FCR, UART_FCR_ENABLE_FIFO); + scratch = serial_in(up, UART_IIR) >> 6; + + switch (scratch) { + case 0: + autoconfig_8250(up); + break; + case 1: + port->type = PORT_UNKNOWN; + break; + case 2: + port->type = PORT_16550; + break; + case 3: + autoconfig_16550a(up); + break; + } + +#ifdef CONFIG_SERIAL_8250_RSA + /* + * Only probe for RSA ports if we got the region. + */ + if (port->type == PORT_16550A && probeflags & PROBE_RSA) { + int i; + + for (i = 0 ; i < probe_rsa_count; ++i) { + if (probe_rsa[i] == port->iobase && __enable_rsa(up)) { + port->type = PORT_RSA; + break; + } + } + } +#endif + + serial_out(up, UART_LCR, save_lcr); + + port->fifosize = uart_config[up->port.type].fifo_size; + old_capabilities = up->capabilities; + up->capabilities = uart_config[port->type].flags; + up->tx_loadsz = uart_config[port->type].tx_loadsz; + + if (port->type == PORT_UNKNOWN) + goto out_lock; + + /* + * Reset the UART. + */ +#ifdef CONFIG_SERIAL_8250_RSA + if (port->type == PORT_RSA) + serial_out(up, UART_RSA_FRR, 0); +#endif + serial_out(up, UART_MCR, save_mcr); + serial8250_clear_fifos(up); + serial_in(up, UART_RX); + if (up->capabilities & UART_CAP_UUE) + serial_out(up, UART_IER, UART_IER_UUE); + else + serial_out(up, UART_IER, 0); + +out_lock: + spin_unlock_irqrestore(&port->lock, flags); + if (up->capabilities != old_capabilities) { + printk(KERN_WARNING + "ttyS%d: detected caps %08x should be %08x\n", + serial_index(port), old_capabilities, + up->capabilities); + } +out: + DEBUG_AUTOCONF("iir=%d ", scratch); + DEBUG_AUTOCONF("type=%s\n", uart_config[port->type].name); +} + +static void autoconfig_irq(struct uart_8250_port *up) +{ + struct uart_port *port = &up->port; + unsigned char save_mcr, save_ier; + unsigned char save_ICP = 0; + unsigned int ICP = 0; + unsigned long irqs; + int irq; + + if (port->flags & UPF_FOURPORT) { + ICP = (port->iobase & 0xfe0) | 0x1f; + save_ICP = inb_p(ICP); + outb_p(0x80, ICP); + inb_p(ICP); + } + + /* forget possible initially masked and pending IRQ */ + probe_irq_off(probe_irq_on()); + save_mcr = serial_in(up, UART_MCR); + save_ier = serial_in(up, UART_IER); + serial_out(up, UART_MCR, UART_MCR_OUT1 | UART_MCR_OUT2); + + irqs = probe_irq_on(); + serial_out(up, UART_MCR, 0); + udelay(10); + if (port->flags & UPF_FOURPORT) { + serial_out(up, UART_MCR, + UART_MCR_DTR | UART_MCR_RTS); + } else { + serial_out(up, UART_MCR, + UART_MCR_DTR | UART_MCR_RTS | UART_MCR_OUT2); + } + serial_out(up, UART_IER, 0x0f); /* enable all intrs */ + serial_in(up, UART_LSR); + serial_in(up, UART_RX); + serial_in(up, UART_IIR); + serial_in(up, UART_MSR); + serial_out(up, UART_TX, 0xFF); + udelay(20); + irq = probe_irq_off(irqs); + + serial_out(up, UART_MCR, save_mcr); + serial_out(up, UART_IER, save_ier); + + if (port->flags & UPF_FOURPORT) + outb_p(save_ICP, ICP); + + port->irq = (irq > 0) ? irq : 0; +} + +static inline void __stop_tx(struct uart_8250_port *p) +{ + if (p->ier & UART_IER_THRI) { + p->ier &= ~UART_IER_THRI; + serial_out(p, UART_IER, p->ier); + } +} + +static void serial8250_stop_tx(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + __stop_tx(up); + + /* + * We really want to stop the transmitter from sending. + */ + if (port->type == PORT_16C950) { + up->acr |= UART_ACR_TXDIS; + serial_icr_write(up, UART_ACR, up->acr); + } +} + +static void serial8250_start_tx(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + if (up->dma && !serial8250_tx_dma(up)) { + return; + } else if (!(up->ier & UART_IER_THRI)) { + up->ier |= UART_IER_THRI; + serial_port_out(port, UART_IER, up->ier); + + if (up->bugs & UART_BUG_TXEN) { + unsigned char lsr; + lsr = serial_in(up, UART_LSR); + up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; + if (lsr & UART_LSR_TEMT) + serial8250_tx_chars(up); + } + } + + /* + * Re-enable the transmitter if we disabled it. + */ + if (port->type == PORT_16C950 && up->acr & UART_ACR_TXDIS) { + up->acr &= ~UART_ACR_TXDIS; + serial_icr_write(up, UART_ACR, up->acr); + } +} + +static void serial8250_stop_rx(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + up->ier &= ~UART_IER_RLSI; + up->port.read_status_mask &= ~UART_LSR_DR; + serial_port_out(port, UART_IER, up->ier); +} + +static void serial8250_enable_ms(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + /* no MSR capabilities */ + if (up->bugs & UART_BUG_NOMSR) + return; + + up->ier |= UART_IER_MSI; + serial_port_out(port, UART_IER, up->ier); +} + +/* + * serial8250_rx_chars: processes according to the passed in LSR + * value, and returns the remaining LSR bits not handled + * by this Rx routine. + */ +unsigned char +serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr) +{ + struct uart_port *port = &up->port; + unsigned char ch; + int max_count = 256; + char flag; + + do { + if (likely(lsr & UART_LSR_DR)) + ch = serial_in(up, UART_RX); + else + /* + * Intel 82571 has a Serial Over Lan device that will + * set UART_LSR_BI without setting UART_LSR_DR when + * it receives a break. To avoid reading from the + * receive buffer without UART_LSR_DR bit set, we + * just force the read character to be 0 + */ + ch = 0; + + flag = TTY_NORMAL; + port->icount.rx++; + + lsr |= up->lsr_saved_flags; + up->lsr_saved_flags = 0; + + if (unlikely(lsr & UART_LSR_BRK_ERROR_BITS)) { + if (lsr & UART_LSR_BI) { + lsr &= ~(UART_LSR_FE | UART_LSR_PE); + port->icount.brk++; + /* + * We do the SysRQ and SAK checking + * here because otherwise the break + * may get masked by ignore_status_mask + * or read_status_mask. + */ + if (uart_handle_break(port)) + goto ignore_char; + } else if (lsr & UART_LSR_PE) + port->icount.parity++; + else if (lsr & UART_LSR_FE) + port->icount.frame++; + if (lsr & UART_LSR_OE) + port->icount.overrun++; + + /* + * Mask off conditions which should be ignored. + */ + lsr &= port->read_status_mask; + + if (lsr & UART_LSR_BI) { + DEBUG_INTR("handling break...."); + flag = TTY_BREAK; + } else if (lsr & UART_LSR_PE) + flag = TTY_PARITY; + else if (lsr & UART_LSR_FE) + flag = TTY_FRAME; + } + if (uart_handle_sysrq_char(port, ch)) + goto ignore_char; + + uart_insert_char(port, lsr, UART_LSR_OE, ch, flag); + +ignore_char: + lsr = serial_in(up, UART_LSR); + } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0)); + spin_unlock(&port->lock); + tty_flip_buffer_push(&port->state->port); + spin_lock(&port->lock); + return lsr; +} +EXPORT_SYMBOL_GPL(serial8250_rx_chars); + +void serial8250_tx_chars(struct uart_8250_port *up) +{ + struct uart_port *port = &up->port; + struct circ_buf *xmit = &port->state->xmit; + int count; + + if (port->x_char) { + serial_out(up, UART_TX, port->x_char); + port->icount.tx++; + port->x_char = 0; + return; + } + if (uart_tx_stopped(port)) { + serial8250_stop_tx(port); + return; + } + if (uart_circ_empty(xmit)) { + __stop_tx(up); + return; + } + + count = up->tx_loadsz; + do { + serial_out(up, UART_TX, xmit->buf[xmit->tail]); + xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); + port->icount.tx++; + if (uart_circ_empty(xmit)) + break; + if (up->capabilities & UART_CAP_HFIFO) { + if ((serial_port_in(port, UART_LSR) & BOTH_EMPTY) != + BOTH_EMPTY) + break; + } + } while (--count > 0); + + if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) + uart_write_wakeup(port); + + DEBUG_INTR("THRE..."); + + if (uart_circ_empty(xmit)) + __stop_tx(up); +} +EXPORT_SYMBOL_GPL(serial8250_tx_chars); + +unsigned int serial8250_modem_status(struct uart_8250_port *up) +{ + struct uart_port *port = &up->port; + unsigned int status = serial_in(up, UART_MSR); + + status |= up->msr_saved_flags; + up->msr_saved_flags = 0; + if (status & UART_MSR_ANY_DELTA && up->ier & UART_IER_MSI && + port->state != NULL) { + if (status & UART_MSR_TERI) + port->icount.rng++; + if (status & UART_MSR_DDSR) + port->icount.dsr++; + if (status & UART_MSR_DDCD) + uart_handle_dcd_change(port, status & UART_MSR_DCD); + if (status & UART_MSR_DCTS) + uart_handle_cts_change(port, status & UART_MSR_CTS); + + wake_up_interruptible(&port->state->port.delta_msr_wait); + } + + return status; +} +EXPORT_SYMBOL_GPL(serial8250_modem_status); + +/* + * This handles the interrupt from one port. + */ +int serial8250_handle_irq(struct uart_port *port, unsigned int iir) +{ + unsigned char status; + unsigned long flags; + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + int dma_err = 0; + + if (iir & UART_IIR_NO_INT) + return 0; + + spin_lock_irqsave(&port->lock, flags); + + status = serial_port_in(port, UART_LSR); + + DEBUG_INTR("status = %x...", status); + + if (status & (UART_LSR_DR | UART_LSR_BI)) { + if (up->dma) + dma_err = serial8250_rx_dma(up, iir); + + if (!up->dma || dma_err) + status = serial8250_rx_chars(up, status); + } + serial8250_modem_status(up); + if (status & UART_LSR_THRE) + serial8250_tx_chars(up); + + spin_unlock_irqrestore(&port->lock, flags); + return 1; +} +EXPORT_SYMBOL_GPL(serial8250_handle_irq); + +static int serial8250_default_handle_irq(struct uart_port *port) +{ + unsigned int iir = serial_port_in(port, UART_IIR); + + return serial8250_handle_irq(port, iir); +} + +/* + * These Exar UARTs have an extra interrupt indicator that could + * fire for a few unimplemented interrupts. One of which is a + * wakeup event when coming out of sleep. Put this here just + * to be on the safe side that these interrupts don't go unhandled. + */ +static int exar_handle_irq(struct uart_port *port) +{ + unsigned char int0, int1, int2, int3; + unsigned int iir = serial_port_in(port, UART_IIR); + int ret; + + ret = serial8250_handle_irq(port, iir); + + if ((port->type == PORT_XR17V35X) || + (port->type == PORT_XR17D15X)) { + int0 = serial_port_in(port, 0x80); + int1 = serial_port_in(port, 0x81); + int2 = serial_port_in(port, 0x82); + int3 = serial_port_in(port, 0x83); + } + + return ret; +} + +/* + * This is the serial driver's interrupt routine. + * + * Arjan thinks the old way was overly complex, so it got simplified. + * Alan disagrees, saying that need the complexity to handle the weird + * nature of ISA shared interrupts. (This is a special exception.) + * + * In order to handle ISA shared interrupts properly, we need to check + * that all ports have been serviced, and therefore the ISA interrupt + * line has been de-asserted. + * + * This means we need to loop through all ports. checking that they + * don't have an interrupt pending. + */ +static irqreturn_t serial8250_interrupt(int irq, void *dev_id) +{ + struct irq_info *i = dev_id; + struct list_head *l, *end = NULL; + int pass_counter = 0, handled = 0; + + DEBUG_INTR("serial8250_interrupt(%d)...", irq); + + spin_lock(&i->lock); + + l = i->head; + do { + struct uart_8250_port *up; + struct uart_port *port; + + up = list_entry(l, struct uart_8250_port, list); + port = &up->port; + + if (port->handle_irq(port)) { + handled = 1; + end = NULL; + } else if (end == NULL) + end = l; + + l = l->next; + + if (l == i->head && pass_counter++ > PASS_LIMIT) { + /* If we hit this, we're dead. */ + printk_ratelimited(KERN_ERR + "serial8250: too much work for irq%d\n", irq); + break; + } + } while (l != end); + + spin_unlock(&i->lock); + + DEBUG_INTR("end.\n"); + + return IRQ_RETVAL(handled); +} + +/* + * To support ISA shared interrupts, we need to have one interrupt + * handler that ensures that the IRQ line has been deasserted + * before returning. Failing to do this will result in the IRQ + * line being stuck active, and, since ISA irqs are edge triggered, + * no more IRQs will be seen. + */ +static void serial_do_unlink(struct irq_info *i, struct uart_8250_port *up) +{ + spin_lock_irq(&i->lock); + + if (!list_empty(i->head)) { + if (i->head == &up->list) + i->head = i->head->next; + list_del(&up->list); + } else { + BUG_ON(i->head != &up->list); + i->head = NULL; + } + spin_unlock_irq(&i->lock); + /* List empty so throw away the hash node */ + if (i->head == NULL) { + hlist_del(&i->node); + kfree(i); + } +} + +static int serial_link_irq_chain(struct uart_8250_port *up) +{ + struct hlist_head *h; + struct hlist_node *n; + struct irq_info *i; + int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0; + + mutex_lock(&hash_mutex); + + h = &irq_lists[up->port.irq % NR_IRQ_HASH]; + + hlist_for_each(n, h) { + i = hlist_entry(n, struct irq_info, node); + if (i->irq == up->port.irq) + break; + } + + if (n == NULL) { + i = kzalloc(sizeof(struct irq_info), GFP_KERNEL); + if (i == NULL) { + mutex_unlock(&hash_mutex); + return -ENOMEM; + } + spin_lock_init(&i->lock); + i->irq = up->port.irq; + hlist_add_head(&i->node, h); + } + mutex_unlock(&hash_mutex); + + spin_lock_irq(&i->lock); + + if (i->head) { + list_add(&up->list, i->head); + spin_unlock_irq(&i->lock); + + ret = 0; + } else { + INIT_LIST_HEAD(&up->list); + i->head = &up->list; + spin_unlock_irq(&i->lock); + irq_flags |= up->port.irqflags; + ret = request_irq(up->port.irq, serial8250_interrupt, + irq_flags, "serial", i); + if (ret < 0) + serial_do_unlink(i, up); + } + + return ret; +} + +static void serial_unlink_irq_chain(struct uart_8250_port *up) +{ + struct irq_info *i; + struct hlist_node *n; + struct hlist_head *h; + + mutex_lock(&hash_mutex); + + h = &irq_lists[up->port.irq % NR_IRQ_HASH]; + + hlist_for_each(n, h) { + i = hlist_entry(n, struct irq_info, node); + if (i->irq == up->port.irq) + break; + } + + BUG_ON(n == NULL); + BUG_ON(i->head == NULL); + + if (list_empty(i->head)) + free_irq(up->port.irq, i); + + serial_do_unlink(i, up); + mutex_unlock(&hash_mutex); +} + +/* + * This function is used to handle ports that do not have an + * interrupt. This doesn't work very well for 16450's, but gives + * barely passable results for a 16550A. (Although at the expense + * of much CPU overhead). + */ +static void serial8250_timeout(unsigned long data) +{ + struct uart_8250_port *up = (struct uart_8250_port *)data; + + up->port.handle_irq(&up->port); + mod_timer(&up->timer, jiffies + uart_poll_timeout(&up->port)); +} + +static void serial8250_backup_timeout(unsigned long data) +{ + struct uart_8250_port *up = (struct uart_8250_port *)data; + unsigned int iir, ier = 0, lsr; + unsigned long flags; + + spin_lock_irqsave(&up->port.lock, flags); + + /* + * Must disable interrupts or else we risk racing with the interrupt + * based handler. + */ + if (up->port.irq) { + ier = serial_in(up, UART_IER); + serial_out(up, UART_IER, 0); + } + + iir = serial_in(up, UART_IIR); + + /* + * This should be a safe test for anyone who doesn't trust the + * IIR bits on their UART, but it's specifically designed for + * the "Diva" UART used on the management processor on many HP + * ia64 and parisc boxes. + */ + lsr = serial_in(up, UART_LSR); + up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; + if ((iir & UART_IIR_NO_INT) && (up->ier & UART_IER_THRI) && + (!uart_circ_empty(&up->port.state->xmit) || up->port.x_char) && + (lsr & UART_LSR_THRE)) { + iir &= ~(UART_IIR_ID | UART_IIR_NO_INT); + iir |= UART_IIR_THRI; + } + + if (!(iir & UART_IIR_NO_INT)) + serial8250_tx_chars(up); + + if (up->port.irq) + serial_out(up, UART_IER, ier); + + spin_unlock_irqrestore(&up->port.lock, flags); + + /* Standard timer interval plus 0.2s to keep the port running */ + mod_timer(&up->timer, + jiffies + uart_poll_timeout(&up->port) + HZ / 5); +} + +static unsigned int serial8250_tx_empty(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned long flags; + unsigned int lsr; + + spin_lock_irqsave(&port->lock, flags); + lsr = serial_port_in(port, UART_LSR); + up->lsr_saved_flags |= lsr & LSR_SAVE_FLAGS; + spin_unlock_irqrestore(&port->lock, flags); + + return (lsr & BOTH_EMPTY) == BOTH_EMPTY ? TIOCSER_TEMT : 0; +} + +static unsigned int serial8250_get_mctrl(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned int status; + unsigned int ret; + + status = serial8250_modem_status(up); + + ret = 0; + if (status & UART_MSR_DCD) + ret |= TIOCM_CAR; + if (status & UART_MSR_RI) + ret |= TIOCM_RNG; + if (status & UART_MSR_DSR) + ret |= TIOCM_DSR; + if (status & UART_MSR_CTS) + ret |= TIOCM_CTS; + return ret; +} + +static void serial8250_set_mctrl(struct uart_port *port, unsigned int mctrl) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned char mcr = 0; + + if (mctrl & TIOCM_RTS) + mcr |= UART_MCR_RTS; + if (mctrl & TIOCM_DTR) + mcr |= UART_MCR_DTR; + if (mctrl & TIOCM_OUT1) + mcr |= UART_MCR_OUT1; + if (mctrl & TIOCM_OUT2) + mcr |= UART_MCR_OUT2; + if (mctrl & TIOCM_LOOP) + mcr |= UART_MCR_LOOP; + + mcr = (mcr & up->mcr_mask) | up->mcr_force | up->mcr; + + serial_port_out(port, UART_MCR, mcr); +} + +static void serial8250_break_ctl(struct uart_port *port, int break_state) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned long flags; + + spin_lock_irqsave(&port->lock, flags); + if (break_state == -1) + up->lcr |= UART_LCR_SBC; + else + up->lcr &= ~UART_LCR_SBC; + serial_port_out(port, UART_LCR, up->lcr); + spin_unlock_irqrestore(&port->lock, flags); +} + +/* + * Wait for transmitter & holding register to empty + */ +static void wait_for_xmitr(struct uart_8250_port *up, int bits) +{ + unsigned int status, tmout = 10000; + + /* Wait up to 10ms for the character(s) to be sent. */ + for (;;) { + status = serial_in(up, UART_LSR); + + up->lsr_saved_flags |= status & LSR_SAVE_FLAGS; + + if ((status & bits) == bits) + break; + if (--tmout == 0) + break; + udelay(1); + } + + /* Wait up to 1s for flow control if necessary */ + if (up->port.flags & UPF_CONS_FLOW) { + unsigned int tmout; + for (tmout = 1000000; tmout; tmout--) { + unsigned int msr = serial_in(up, UART_MSR); + up->msr_saved_flags |= msr & MSR_SAVE_FLAGS; + if (msr & UART_MSR_CTS) + break; + udelay(1); + touch_nmi_watchdog(); + } + } +} + +#ifdef CONFIG_CONSOLE_POLL +/* + * Console polling routines for writing and reading from the uart while + * in an interrupt or debug context. + */ + +static int serial8250_get_poll_char(struct uart_port *port) +{ + unsigned char lsr = serial_port_in(port, UART_LSR); + + if (!(lsr & UART_LSR_DR)) + return NO_POLL_CHAR; + + return serial_port_in(port, UART_RX); +} + + +static void serial8250_put_poll_char(struct uart_port *port, + unsigned char c) +{ + unsigned int ier; + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + /* + * First save the IER then disable the interrupts + */ + ier = serial_port_in(port, UART_IER); + if (up->capabilities & UART_CAP_UUE) + serial_port_out(port, UART_IER, UART_IER_UUE); + else + serial_port_out(port, UART_IER, 0); + + wait_for_xmitr(up, BOTH_EMPTY); + /* + * Send the character out. + * If a LF, also do CR... + */ + serial_port_out(port, UART_TX, c); + if (c == 10) { + wait_for_xmitr(up, BOTH_EMPTY); + serial_port_out(port, UART_TX, 13); + } + + /* + * Finally, wait for transmitter to become empty + * and restore the IER + */ + wait_for_xmitr(up, BOTH_EMPTY); + serial_port_out(port, UART_IER, ier); +} + +#endif /* CONFIG_CONSOLE_POLL */ + +static int serial8250_startup(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned long flags; + unsigned char lsr, iir; + int retval; + + if (port->type == PORT_8250_CIR) + return -ENODEV; + + if (!port->fifosize) + port->fifosize = uart_config[port->type].fifo_size; + if (!up->tx_loadsz) + up->tx_loadsz = uart_config[port->type].tx_loadsz; + if (!up->capabilities) + up->capabilities = uart_config[port->type].flags; + up->mcr = 0; + + if (port->iotype != up->cur_iotype) + set_io_from_upio(port); + + if (port->type == PORT_16C950) { + /* Wake up and initialize UART */ + up->acr = 0; + serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); + serial_port_out(port, UART_EFR, UART_EFR_ECB); + serial_port_out(port, UART_IER, 0); + serial_port_out(port, UART_LCR, 0); + serial_icr_write(up, UART_CSR, 0); /* Reset the UART */ + serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); + serial_port_out(port, UART_EFR, UART_EFR_ECB); + serial_port_out(port, UART_LCR, 0); + } + +#ifdef CONFIG_SERIAL_8250_RSA + /* + * If this is an RSA port, see if we can kick it up to the + * higher speed clock. + */ + enable_rsa(up); +#endif + + /* + * Clear the FIFO buffers and disable them. + * (they will be reenabled in set_termios()) + */ + serial8250_clear_fifos(up); + + /* + * Clear the interrupt registers. + */ + serial_port_in(port, UART_LSR); + serial_port_in(port, UART_RX); + serial_port_in(port, UART_IIR); + serial_port_in(port, UART_MSR); + + /* + * At this point, there's no way the LSR could still be 0xff; + * if it is, then bail out, because there's likely no UART + * here. + */ + if (!(port->flags & UPF_BUGGY_UART) && + (serial_port_in(port, UART_LSR) == 0xff)) { + printk_ratelimited(KERN_INFO "ttyS%d: LSR safety check engaged!\n", + serial_index(port)); + return -ENODEV; + } + + /* + * For a XR16C850, we need to set the trigger levels + */ + if (port->type == PORT_16850) { + unsigned char fctr; + + serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); + + fctr = serial_in(up, UART_FCTR) & ~(UART_FCTR_RX|UART_FCTR_TX); + serial_port_out(port, UART_FCTR, + fctr | UART_FCTR_TRGD | UART_FCTR_RX); + serial_port_out(port, UART_TRG, UART_TRG_96); + serial_port_out(port, UART_FCTR, + fctr | UART_FCTR_TRGD | UART_FCTR_TX); + serial_port_out(port, UART_TRG, UART_TRG_96); + + serial_port_out(port, UART_LCR, 0); + } + + if (port->irq) { + unsigned char iir1; + /* + * Test for UARTs that do not reassert THRE when the + * transmitter is idle and the interrupt has already + * been cleared. Real 16550s should always reassert + * this interrupt whenever the transmitter is idle and + * the interrupt is enabled. Delays are necessary to + * allow register changes to become visible. + */ + spin_lock_irqsave(&port->lock, flags); + if (up->port.irqflags & IRQF_SHARED) + disable_irq_nosync(port->irq); + + wait_for_xmitr(up, UART_LSR_THRE); + serial_port_out_sync(port, UART_IER, UART_IER_THRI); + udelay(1); /* allow THRE to set */ + iir1 = serial_port_in(port, UART_IIR); + serial_port_out(port, UART_IER, 0); + serial_port_out_sync(port, UART_IER, UART_IER_THRI); + udelay(1); /* allow a working UART time to re-assert THRE */ + iir = serial_port_in(port, UART_IIR); + serial_port_out(port, UART_IER, 0); + + if (port->irqflags & IRQF_SHARED) + enable_irq(port->irq); + spin_unlock_irqrestore(&port->lock, flags); + + /* + * If the interrupt is not reasserted, or we otherwise + * don't trust the iir, setup a timer to kick the UART + * on a regular basis. + */ + if ((!(iir1 & UART_IIR_NO_INT) && (iir & UART_IIR_NO_INT)) || + up->port.flags & UPF_BUG_THRE) { + up->bugs |= UART_BUG_THRE; + pr_debug("ttyS%d - using backup timer\n", + serial_index(port)); + } + } + + /* + * The above check will only give an accurate result the first time + * the port is opened so this value needs to be preserved. + */ + if (up->bugs & UART_BUG_THRE) { + up->timer.function = serial8250_backup_timeout; + up->timer.data = (unsigned long)up; + mod_timer(&up->timer, jiffies + + uart_poll_timeout(port) + HZ / 5); + } + + /* + * If the "interrupt" for this port doesn't correspond with any + * hardware interrupt, we use a timer-based system. The original + * driver used to do this with IRQ0. + */ + if (!port->irq) { + up->timer.data = (unsigned long)up; + mod_timer(&up->timer, jiffies + uart_poll_timeout(port)); + } else { + retval = serial_link_irq_chain(up); + if (retval) + return retval; + } + + /* + * Now, initialize the UART + */ + serial_port_out(port, UART_LCR, UART_LCR_WLEN8); + + spin_lock_irqsave(&port->lock, flags); + if (up->port.flags & UPF_FOURPORT) { + if (!up->port.irq) + up->port.mctrl |= TIOCM_OUT1; + } else + /* + * Most PC uarts need OUT2 raised to enable interrupts. + */ + if (port->irq) + up->port.mctrl |= TIOCM_OUT2; + + serial8250_set_mctrl(port, port->mctrl); + + /* Serial over Lan (SoL) hack: + Intel 8257x Gigabit ethernet chips have a + 16550 emulation, to be used for Serial Over Lan. + Those chips take a longer time than a normal + serial device to signalize that a transmission + data was queued. Due to that, the above test generally + fails. One solution would be to delay the reading of + iir. However, this is not reliable, since the timeout + is variable. So, let's just don't test if we receive + TX irq. This way, we'll never enable UART_BUG_TXEN. + */ + if (skip_txen_test || up->port.flags & UPF_NO_TXEN_TEST) + goto dont_test_tx_en; + + /* + * Do a quick test to see if we receive an + * interrupt when we enable the TX irq. + */ + serial_port_out(port, UART_IER, UART_IER_THRI); + lsr = serial_port_in(port, UART_LSR); + iir = serial_port_in(port, UART_IIR); + serial_port_out(port, UART_IER, 0); + + if (lsr & UART_LSR_TEMT && iir & UART_IIR_NO_INT) { + if (!(up->bugs & UART_BUG_TXEN)) { + up->bugs |= UART_BUG_TXEN; + pr_debug("ttyS%d - enabling bad tx status workarounds\n", + serial_index(port)); + } + } else { + up->bugs &= ~UART_BUG_TXEN; + } + +dont_test_tx_en: + spin_unlock_irqrestore(&port->lock, flags); + + /* + * Clear the interrupt registers again for luck, and clear the + * saved flags to avoid getting false values from polling + * routines or the previous session. + */ + serial_port_in(port, UART_LSR); + serial_port_in(port, UART_RX); + serial_port_in(port, UART_IIR); + serial_port_in(port, UART_MSR); + up->lsr_saved_flags = 0; + up->msr_saved_flags = 0; + + /* + * Request DMA channels for both RX and TX. + */ + if (up->dma) { + retval = serial8250_request_dma(up); + if (retval) { + pr_warn_ratelimited("ttyS%d - failed to request DMA\n", + serial_index(port)); + up->dma = NULL; + } + } + + /* + * Finally, enable interrupts. Note: Modem status interrupts + * are set via set_termios(), which will be occurring imminently + * anyway, so we don't enable them here. + */ + up->ier = UART_IER_RLSI | UART_IER_RDI; + serial_port_out(port, UART_IER, up->ier); + + if (port->flags & UPF_FOURPORT) { + unsigned int icp; + /* + * Enable interrupts on the AST Fourport board + */ + icp = (port->iobase & 0xfe0) | 0x01f; + outb_p(0x80, icp); + inb_p(icp); + } + + return 0; +} + +static void serial8250_shutdown(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned long flags; + + /* + * Disable interrupts from this port + */ + up->ier = 0; + serial_port_out(port, UART_IER, 0); + + if (up->dma) + serial8250_release_dma(up); + + spin_lock_irqsave(&port->lock, flags); + if (port->flags & UPF_FOURPORT) { + /* reset interrupts on the AST Fourport board */ + inb((port->iobase & 0xfe0) | 0x1f); + port->mctrl |= TIOCM_OUT1; + } else + port->mctrl &= ~TIOCM_OUT2; + + serial8250_set_mctrl(port, port->mctrl); + spin_unlock_irqrestore(&port->lock, flags); + + /* + * Disable break condition and FIFOs + */ + serial_port_out(port, UART_LCR, + serial_port_in(port, UART_LCR) & ~UART_LCR_SBC); + serial8250_clear_fifos(up); + +#ifdef CONFIG_SERIAL_8250_RSA + /* + * Reset the RSA board back to 115kbps compat mode. + */ + disable_rsa(up); +#endif + + /* + * Read data port to reset things, and then unlink from + * the IRQ chain. + */ + serial_port_in(port, UART_RX); + + del_timer_sync(&up->timer); + up->timer.function = serial8250_timeout; + if (port->irq) + serial_unlink_irq_chain(up); +} + +static unsigned int serial8250_get_divisor(struct uart_port *port, unsigned int baud) +{ + unsigned int quot; + + /* + * Handle magic divisors for baud rates above baud_base on + * SMSC SuperIO chips. + */ + if ((port->flags & UPF_MAGIC_MULTIPLIER) && + baud == (port->uartclk/4)) + quot = 0x8001; + else if ((port->flags & UPF_MAGIC_MULTIPLIER) && + baud == (port->uartclk/8)) + quot = 0x8002; + else + quot = uart_get_divisor(port, baud); + + return quot; +} + +void +serial8250_do_set_termios(struct uart_port *port, struct ktermios *termios, + struct ktermios *old) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + unsigned char cval, fcr = 0; + unsigned long flags; + unsigned int baud, quot; + int fifo_bug = 0; + + switch (termios->c_cflag & CSIZE) { + case CS5: + cval = UART_LCR_WLEN5; + break; + case CS6: + cval = UART_LCR_WLEN6; + break; + case CS7: + cval = UART_LCR_WLEN7; + break; + default: + case CS8: + cval = UART_LCR_WLEN8; + break; + } + + if (termios->c_cflag & CSTOPB) + cval |= UART_LCR_STOP; + if (termios->c_cflag & PARENB) { + cval |= UART_LCR_PARITY; + if (up->bugs & UART_BUG_PARITY) + fifo_bug = 1; + } + if (!(termios->c_cflag & PARODD)) + cval |= UART_LCR_EPAR; +#ifdef CMSPAR + if (termios->c_cflag & CMSPAR) + cval |= UART_LCR_SPAR; +#endif + + /* + * Ask the core to calculate the divisor for us. + */ + baud = uart_get_baud_rate(port, termios, old, + port->uartclk / 16 / 0xffff, + port->uartclk / 16); + quot = serial8250_get_divisor(port, baud); + + /* + * Oxford Semi 952 rev B workaround + */ + if (up->bugs & UART_BUG_QUOT && (quot & 0xff) == 0) + quot++; + + if (up->capabilities & UART_CAP_FIFO && port->fifosize > 1) { + fcr = uart_config[port->type].fcr; + if (baud < 2400 || fifo_bug) { + fcr &= ~UART_FCR_TRIGGER_MASK; + fcr |= UART_FCR_TRIGGER_1; + } + } + + /* + * MCR-based auto flow control. When AFE is enabled, RTS will be + * deasserted when the receive FIFO contains more characters than + * the trigger, or the MCR RTS bit is cleared. In the case where + * the remote UART is not using CTS auto flow control, we must + * have sufficient FIFO entries for the latency of the remote + * UART to respond. IOW, at least 32 bytes of FIFO. + */ + if (up->capabilities & UART_CAP_AFE && port->fifosize >= 32) { + up->mcr &= ~UART_MCR_AFE; + if (termios->c_cflag & CRTSCTS) + up->mcr |= UART_MCR_AFE; + } + + /* + * Ok, we're now changing the port state. Do it with + * interrupts disabled. + */ + spin_lock_irqsave(&port->lock, flags); + + /* + * Update the per-port timeout. + */ + uart_update_timeout(port, termios->c_cflag, baud); + + port->read_status_mask = UART_LSR_OE | UART_LSR_THRE | UART_LSR_DR; + if (termios->c_iflag & INPCK) + port->read_status_mask |= UART_LSR_FE | UART_LSR_PE; + if (termios->c_iflag & (BRKINT | PARMRK)) + port->read_status_mask |= UART_LSR_BI; + + /* + * Characteres to ignore + */ + port->ignore_status_mask = 0; + if (termios->c_iflag & IGNPAR) + port->ignore_status_mask |= UART_LSR_PE | UART_LSR_FE; + if (termios->c_iflag & IGNBRK) { + port->ignore_status_mask |= UART_LSR_BI; + /* + * If we're ignoring parity and break indicators, + * ignore overruns too (for real raw support). + */ + if (termios->c_iflag & IGNPAR) + port->ignore_status_mask |= UART_LSR_OE; + } + + /* + * ignore all characters if CREAD is not set + */ + if ((termios->c_cflag & CREAD) == 0) + port->ignore_status_mask |= UART_LSR_DR; + + /* + * CTS flow control flag and modem status interrupts + */ + up->ier &= ~UART_IER_MSI; + if (!(up->bugs & UART_BUG_NOMSR) && + UART_ENABLE_MS(&up->port, termios->c_cflag)) + up->ier |= UART_IER_MSI; + if (up->capabilities & UART_CAP_UUE) + up->ier |= UART_IER_UUE; + if (up->capabilities & UART_CAP_RTOIE) + up->ier |= UART_IER_RTOIE; + + serial_port_out(port, UART_IER, up->ier); + + if (up->capabilities & UART_CAP_EFR) { + unsigned char efr = 0; + /* + * TI16C752/Startech hardware flow control. FIXME: + * - TI16C752 requires control thresholds to be set. + * - UART_MCR_RTS is ineffective if auto-RTS mode is enabled. + */ + if (termios->c_cflag & CRTSCTS) + efr |= UART_EFR_CTS; + + serial_port_out(port, UART_LCR, UART_LCR_CONF_MODE_B); + if (port->flags & UPF_EXAR_EFR) + serial_port_out(port, UART_XR_EFR, efr); + else + serial_port_out(port, UART_EFR, efr); + } + + /* Workaround to enable 115200 baud on OMAP1510 internal ports */ + if (is_omap1510_8250(up)) { + if (baud == 115200) { + quot = 1; + serial_port_out(port, UART_OMAP_OSC_12M_SEL, 1); + } else + serial_port_out(port, UART_OMAP_OSC_12M_SEL, 0); + } + + /* + * For NatSemi, switch to bank 2 not bank 1, to avoid resetting EXCR2, + * otherwise just set DLAB + */ + if (up->capabilities & UART_NATSEMI) + serial_port_out(port, UART_LCR, 0xe0); + else + serial_port_out(port, UART_LCR, cval | UART_LCR_DLAB); + + serial_dl_write(up, quot); + + /* + * LCR DLAB must be set to enable 64-byte FIFO mode. If the FCR + * is written without DLAB set, this mode will be disabled. + */ + if (port->type == PORT_16750) + serial_port_out(port, UART_FCR, fcr); + + serial_port_out(port, UART_LCR, cval); /* reset DLAB */ + up->lcr = cval; /* Save LCR */ + if (port->type != PORT_16750) { + /* emulated UARTs (Lucent Venus 167x) need two steps */ + if (fcr & UART_FCR_ENABLE_FIFO) + serial_port_out(port, UART_FCR, UART_FCR_ENABLE_FIFO); + serial_port_out(port, UART_FCR, fcr); /* set fcr */ + } + serial8250_set_mctrl(port, port->mctrl); + spin_unlock_irqrestore(&port->lock, flags); + /* Don't rewrite B0 */ + if (tty_termios_baud_rate(termios)) + tty_termios_encode_baud_rate(termios, baud, baud); +} +EXPORT_SYMBOL(serial8250_do_set_termios); + +static void +serial8250_set_termios(struct uart_port *port, struct ktermios *termios, + struct ktermios *old) +{ + if (port->set_termios) + port->set_termios(port, termios, old); + else + serial8250_do_set_termios(port, termios, old); +} + +static void +serial8250_set_ldisc(struct uart_port *port, int new) +{ + if (new == N_PPS) { + port->flags |= UPF_HARDPPS_CD; + serial8250_enable_ms(port); + } else + port->flags &= ~UPF_HARDPPS_CD; +} + + +void serial8250_do_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) +{ + struct uart_8250_port *p = + container_of(port, struct uart_8250_port, port); + + serial8250_set_sleep(p, state != 0); +} +EXPORT_SYMBOL(serial8250_do_pm); + +static void +serial8250_pm(struct uart_port *port, unsigned int state, + unsigned int oldstate) +{ + if (port->pm) + port->pm(port, state, oldstate); + else + serial8250_do_pm(port, state, oldstate); +} + +static unsigned int serial8250_port_size(struct uart_8250_port *pt) +{ + if (pt->port.iotype == UPIO_AU) + return 0x1000; + if (is_omap1_8250(pt)) + return 0x16 << pt->port.regshift; + + return 8 << pt->port.regshift; +} + +/* + * Resource handling. + */ +static int serial8250_request_std_resource(struct uart_8250_port *up) +{ + unsigned int size = serial8250_port_size(up); + struct uart_port *port = &up->port; + int ret = 0; + + switch (port->iotype) { + case UPIO_AU: + case UPIO_TSI: + case UPIO_MEM32: + case UPIO_MEM: + if (!port->mapbase) + break; + + if (!request_mem_region(port->mapbase, size, "serial")) { + ret = -EBUSY; + break; + } + + if (port->flags & UPF_IOREMAP) { + port->membase = ioremap_nocache(port->mapbase, size); + if (!port->membase) { + release_mem_region(port->mapbase, size); + ret = -ENOMEM; + } + } + break; + + case UPIO_HUB6: + case UPIO_PORT: + if (!request_region(port->iobase, size, "serial")) + ret = -EBUSY; + break; + } + return ret; +} + +static void serial8250_release_std_resource(struct uart_8250_port *up) +{ + unsigned int size = serial8250_port_size(up); + struct uart_port *port = &up->port; + + switch (port->iotype) { + case UPIO_AU: + case UPIO_TSI: + case UPIO_MEM32: + case UPIO_MEM: + if (!port->mapbase) + break; + + if (port->flags & UPF_IOREMAP) { + iounmap(port->membase); + port->membase = NULL; + } + + release_mem_region(port->mapbase, size); + break; + + case UPIO_HUB6: + case UPIO_PORT: + release_region(port->iobase, size); + break; + } +} + +static int serial8250_request_rsa_resource(struct uart_8250_port *up) +{ + unsigned long start = UART_RSA_BASE << up->port.regshift; + unsigned int size = 8 << up->port.regshift; + struct uart_port *port = &up->port; + int ret = -EINVAL; + + switch (port->iotype) { + case UPIO_HUB6: + case UPIO_PORT: + start += port->iobase; + if (request_region(start, size, "serial-rsa")) + ret = 0; + else + ret = -EBUSY; + break; + } + + return ret; +} + +static void serial8250_release_rsa_resource(struct uart_8250_port *up) +{ + unsigned long offset = UART_RSA_BASE << up->port.regshift; + unsigned int size = 8 << up->port.regshift; + struct uart_port *port = &up->port; + + switch (port->iotype) { + case UPIO_HUB6: + case UPIO_PORT: + release_region(port->iobase + offset, size); + break; + } +} + +static void serial8250_release_port(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + serial8250_release_std_resource(up); + if (port->type == PORT_RSA) + serial8250_release_rsa_resource(up); +} + +static int serial8250_request_port(struct uart_port *port) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + int ret; + + if (port->type == PORT_8250_CIR) + return -ENODEV; + + ret = serial8250_request_std_resource(up); + if (ret == 0 && port->type == PORT_RSA) { + ret = serial8250_request_rsa_resource(up); + if (ret < 0) + serial8250_release_std_resource(up); + } + + return ret; +} + +static void serial8250_config_port(struct uart_port *port, int flags) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + int probeflags = PROBE_ANY; + int ret; + + if (port->type == PORT_8250_CIR) + return; + + /* + * Find the region that we can probe for. This in turn + * tells us whether we can probe for the type of port. + */ + ret = serial8250_request_std_resource(up); + if (ret < 0) + return; + + ret = serial8250_request_rsa_resource(up); + if (ret < 0) + probeflags &= ~PROBE_RSA; + + if (port->iotype != up->cur_iotype) + set_io_from_upio(port); + + if (flags & UART_CONFIG_TYPE) + autoconfig(up, probeflags); + + /* if access method is AU, it is a 16550 with a quirk */ + if (port->type == PORT_16550A && port->iotype == UPIO_AU) + up->bugs |= UART_BUG_NOMSR; + + if (port->type != PORT_UNKNOWN && flags & UART_CONFIG_IRQ) + autoconfig_irq(up); + + if (port->type != PORT_RSA && probeflags & PROBE_RSA) + serial8250_release_rsa_resource(up); + if (port->type == PORT_UNKNOWN) + serial8250_release_std_resource(up); + + /* Fixme: probably not the best place for this */ + if ((port->type == PORT_XR17V35X) || + (port->type == PORT_XR17D15X)) + port->handle_irq = exar_handle_irq; +} + +static int +serial8250_verify_port(struct uart_port *port, struct serial_struct *ser) +{ + if (ser->irq >= nr_irqs || ser->irq < 0 || + ser->baud_base < 9600 || ser->type < PORT_UNKNOWN || + ser->type >= ARRAY_SIZE(uart_config) || ser->type == PORT_CIRRUS || + ser->type == PORT_STARTECH) + return -EINVAL; + return 0; +} + +static const char * +serial8250_type(struct uart_port *port) +{ + int type = port->type; + + if (type >= ARRAY_SIZE(uart_config)) + type = 0; + return uart_config[type].name; +} + +static struct uart_ops serial8250_pops = { + .tx_empty = serial8250_tx_empty, + .set_mctrl = serial8250_set_mctrl, + .get_mctrl = serial8250_get_mctrl, + .stop_tx = serial8250_stop_tx, + .start_tx = serial8250_start_tx, + .stop_rx = serial8250_stop_rx, + .enable_ms = serial8250_enable_ms, + .break_ctl = serial8250_break_ctl, + .startup = serial8250_startup, + .shutdown = serial8250_shutdown, + .set_termios = serial8250_set_termios, + .set_ldisc = serial8250_set_ldisc, + .pm = serial8250_pm, + .type = serial8250_type, + .release_port = serial8250_release_port, + .request_port = serial8250_request_port, + .config_port = serial8250_config_port, + .verify_port = serial8250_verify_port, +#ifdef CONFIG_CONSOLE_POLL + .poll_get_char = serial8250_get_poll_char, + .poll_put_char = serial8250_put_poll_char, +#endif +}; + +static struct uart_8250_port serial8250_ports[UART_NR]; + +static void (*serial8250_isa_config)(int port, struct uart_port *up, + unsigned short *capabilities); + +void serial8250_set_isa_configurator( + void (*v)(int port, struct uart_port *up, unsigned short *capabilities)) +{ + serial8250_isa_config = v; +} +EXPORT_SYMBOL(serial8250_set_isa_configurator); + +static void __init serial8250_isa_init_ports(void) +{ + struct uart_8250_port *up; + static int first = 1; + int i, irqflag = 0; + + if (!first) + return; + first = 0; + + if (nr_uarts > UART_NR) + nr_uarts = UART_NR; + + for (i = 0; i < nr_uarts; i++) { + struct uart_8250_port *up = &serial8250_ports[i]; + struct uart_port *port = &up->port; + + port->line = i; + spin_lock_init(&port->lock); + + init_timer(&up->timer); + up->timer.function = serial8250_timeout; + up->cur_iotype = 0xFF; + + /* + * ALPHA_KLUDGE_MCR needs to be killed. + */ + up->mcr_mask = ~ALPHA_KLUDGE_MCR; + up->mcr_force = ALPHA_KLUDGE_MCR; + + port->ops = &serial8250_pops; + } + + if (share_irqs) + irqflag = IRQF_SHARED; + + for (i = 0, up = serial8250_ports; + i < ARRAY_SIZE(old_serial_port) && i < nr_uarts; + i++, up++) { + struct uart_port *port = &up->port; + + port->iobase = old_serial_port[i].port; + port->irq = irq_canonicalize(old_serial_port[i].irq); + port->irqflags = old_serial_port[i].irqflags; + port->uartclk = old_serial_port[i].baud_base * 16; + port->flags = old_serial_port[i].flags; + port->hub6 = old_serial_port[i].hub6; + port->membase = old_serial_port[i].iomem_base; + port->iotype = old_serial_port[i].io_type; + port->regshift = old_serial_port[i].iomem_reg_shift; + set_io_from_upio(port); + port->irqflags |= irqflag; + if (serial8250_isa_config != NULL) + serial8250_isa_config(i, &up->port, &up->capabilities); + + } +} + +static void +serial8250_init_fixed_type_port(struct uart_8250_port *up, unsigned int type) +{ + up->port.type = type; + if (!up->port.fifosize) + up->port.fifosize = uart_config[type].fifo_size; + if (!up->tx_loadsz) + up->tx_loadsz = uart_config[type].tx_loadsz; + if (!up->capabilities) + up->capabilities = uart_config[type].flags; +} + +static void __init +serial8250_register_ports(struct uart_driver *drv, struct device *dev) +{ + int i; + + for (i = 0; i < nr_uarts; i++) { + struct uart_8250_port *up = &serial8250_ports[i]; + + if (up->port.dev) + continue; + + up->port.dev = dev; + + if (up->port.flags & UPF_FIXED_TYPE) + serial8250_init_fixed_type_port(up, up->port.type); + + uart_add_one_port(drv, &up->port); + } +} + +#ifdef CONFIG_SERIAL_8250_CONSOLE + +static void serial8250_console_putchar(struct uart_port *port, int ch) +{ + struct uart_8250_port *up = + container_of(port, struct uart_8250_port, port); + + wait_for_xmitr(up, UART_LSR_THRE); + serial_port_out(port, UART_TX, ch); +} + +/* + * Print a string to the serial port trying not to disturb + * any possible real use of the port... + * + * The console_lock must be held when we get here. + */ +static void +serial8250_console_write(struct console *co, const char *s, unsigned int count) +{ + struct uart_8250_port *up = &serial8250_ports[co->index]; + struct uart_port *port = &up->port; + unsigned long flags; + unsigned int ier; + int locked = 1; + + touch_nmi_watchdog(); + + local_irq_save(flags); + if (port->sysrq) { + /* serial8250_handle_irq() already took the lock */ + locked = 0; + } else if (oops_in_progress) { + locked = spin_trylock(&port->lock); + } else + spin_lock(&port->lock); + + /* + * First save the IER then disable the interrupts + */ + ier = serial_port_in(port, UART_IER); + + if (up->capabilities & UART_CAP_UUE) + serial_port_out(port, UART_IER, UART_IER_UUE); + else + serial_port_out(port, UART_IER, 0); + + uart_console_write(port, s, count, serial8250_console_putchar); + + /* + * Finally, wait for transmitter to become empty + * and restore the IER + */ + wait_for_xmitr(up, BOTH_EMPTY); + serial_port_out(port, UART_IER, ier); + + /* + * The receive handling will happen properly because the + * receive ready bit will still be set; it is not cleared + * on read. However, modem control will not, we must + * call it if we have saved something in the saved flags + * while processing with interrupts off. + */ + if (up->msr_saved_flags) + serial8250_modem_status(up); + + if (locked) + spin_unlock(&port->lock); + local_irq_restore(flags); +} + +static int __init serial8250_console_setup(struct console *co, char *options) +{ + struct uart_port *port; + int baud = 9600; + int bits = 8; + int parity = 'n'; + int flow = 'n'; + + /* + * Check whether an invalid uart number has been specified, and + * if so, search for the first available port that does have + * console support. + */ + if (co->index >= nr_uarts) + co->index = 0; + port = &serial8250_ports[co->index].port; + if (!port->iobase && !port->membase) + return -ENODEV; + + if (options) + uart_parse_options(options, &baud, &parity, &bits, &flow); + + return uart_set_options(port, co, baud, parity, bits, flow); +} + +static int serial8250_console_early_setup(void) +{ + return serial8250_find_port_for_earlycon(); +} + +static struct console serial8250_console = { + .name = "ttyS", + .write = serial8250_console_write, + .device = uart_console_device, + .setup = serial8250_console_setup, + .early_setup = serial8250_console_early_setup, + .flags = CON_PRINTBUFFER | CON_ANYTIME, + .index = -1, + .data = &serial8250_reg, +}; + +static int __init serial8250_console_init(void) +{ + serial8250_isa_init_ports(); + register_console(&serial8250_console); + return 0; +} +console_initcall(serial8250_console_init); + +int serial8250_find_port(struct uart_port *p) +{ + int line; + struct uart_port *port; + + for (line = 0; line < nr_uarts; line++) { + port = &serial8250_ports[line].port; + if (uart_match_port(p, port)) + return line; + } + return -ENODEV; +} + +#define SERIAL8250_CONSOLE &serial8250_console +#else +#define SERIAL8250_CONSOLE NULL +#endif + +static struct uart_driver serial8250_reg = { + .owner = THIS_MODULE, + .driver_name = "serial", + .dev_name = "ttyS", + .major = TTY_MAJOR, + .minor = 64, + .cons = SERIAL8250_CONSOLE, +}; + +/* + * early_serial_setup - early registration for 8250 ports + * + * Setup an 8250 port structure prior to console initialisation. Use + * after console initialisation will cause undefined behaviour. + */ +int __init early_serial_setup(struct uart_port *port) +{ + struct uart_port *p; + + if (port->line >= ARRAY_SIZE(serial8250_ports)) + return -ENODEV; + + serial8250_isa_init_ports(); + p = &serial8250_ports[port->line].port; + p->iobase = port->iobase; + p->membase = port->membase; + p->irq = port->irq; + p->irqflags = port->irqflags; + p->uartclk = port->uartclk; + p->fifosize = port->fifosize; + p->regshift = port->regshift; + p->iotype = port->iotype; + p->flags = port->flags; + p->mapbase = port->mapbase; + p->private_data = port->private_data; + p->type = port->type; + p->line = port->line; + + set_io_from_upio(p); + if (port->serial_in) + p->serial_in = port->serial_in; + if (port->serial_out) + p->serial_out = port->serial_out; + if (port->handle_irq) + p->handle_irq = port->handle_irq; + else + p->handle_irq = serial8250_default_handle_irq; + + return 0; +} + +/** + * serial8250_suspend_port - suspend one serial port + * @line: serial line number + * + * Suspend one serial port. + */ +void serial8250_suspend_port(int line) +{ + uart_suspend_port(&serial8250_reg, &serial8250_ports[line].port); +} + +/** + * serial8250_resume_port - resume one serial port + * @line: serial line number + * + * Resume one serial port. + */ +void serial8250_resume_port(int line) +{ + struct uart_8250_port *up = &serial8250_ports[line]; + struct uart_port *port = &up->port; + + if (up->capabilities & UART_NATSEMI) { + /* Ensure it's still in high speed mode */ + serial_port_out(port, UART_LCR, 0xE0); + + ns16550a_goto_highspeed(up); + + serial_port_out(port, UART_LCR, 0); + port->uartclk = 921600*16; + } + uart_resume_port(&serial8250_reg, port); +} + +/* + * Register a set of serial devices attached to a platform device. The + * list is terminated with a zero flags entry, which means we expect + * all entries to have at least UPF_BOOT_AUTOCONF set. + */ +static int serial8250_probe(struct platform_device *dev) +{ + struct plat_serial8250_port *p = dev->dev.platform_data; + struct uart_8250_port uart; + int ret, i, irqflag = 0; + + memset(&uart, 0, sizeof(uart)); + + if (share_irqs) + irqflag = IRQF_SHARED; + + for (i = 0; p && p->flags != 0; p++, i++) { + uart.port.iobase = p->iobase; + uart.port.membase = p->membase; + uart.port.irq = p->irq; + uart.port.irqflags = p->irqflags; + uart.port.uartclk = p->uartclk; + uart.port.regshift = p->regshift; + uart.port.iotype = p->iotype; + uart.port.flags = p->flags; + uart.port.mapbase = p->mapbase; + uart.port.hub6 = p->hub6; + uart.port.private_data = p->private_data; + uart.port.type = p->type; + uart.port.serial_in = p->serial_in; + uart.port.serial_out = p->serial_out; + uart.port.handle_irq = p->handle_irq; + uart.port.handle_break = p->handle_break; + uart.port.set_termios = p->set_termios; + uart.port.pm = p->pm; + uart.port.dev = &dev->dev; + uart.port.irqflags |= irqflag; + ret = serial8250_register_8250_port(&uart); + if (ret < 0) { + dev_err(&dev->dev, "unable to register port at index %d " + "(IO%lx MEM%llx IRQ%d): %d\n", i, + p->iobase, (unsigned long long)p->mapbase, + p->irq, ret); + } + } + return 0; +} + +/* + * Remove serial ports registered against a platform device. + */ +static int serial8250_remove(struct platform_device *dev) +{ + int i; + + for (i = 0; i < nr_uarts; i++) { + struct uart_8250_port *up = &serial8250_ports[i]; + + if (up->port.dev == &dev->dev) + serial8250_unregister_port(i); + } + return 0; +} + +static int serial8250_suspend(struct platform_device *dev, pm_message_t state) +{ + int i; + + for (i = 0; i < UART_NR; i++) { + struct uart_8250_port *up = &serial8250_ports[i]; + + if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev) + uart_suspend_port(&serial8250_reg, &up->port); + } + + return 0; +} + +static int serial8250_resume(struct platform_device *dev) +{ + int i; + + for (i = 0; i < UART_NR; i++) { + struct uart_8250_port *up = &serial8250_ports[i]; + + if (up->port.type != PORT_UNKNOWN && up->port.dev == &dev->dev) + serial8250_resume_port(i); + } + + return 0; +} + +static struct platform_driver serial8250_isa_driver = { + .probe = serial8250_probe, + .remove = serial8250_remove, + .suspend = serial8250_suspend, + .resume = serial8250_resume, + .driver = { + .name = "serial8250", + .owner = THIS_MODULE, + }, +}; + +/* + * This "device" covers _all_ ISA 8250-compatible serial devices listed + * in the table in include/asm/serial.h + */ +static struct platform_device *serial8250_isa_devs; + +/* + * serial8250_register_8250_port and serial8250_unregister_port allows for + * 16x50 serial ports to be configured at run-time, to support PCMCIA + * modems and PCI multiport cards. + */ +static DEFINE_MUTEX(serial_mutex); + +static struct uart_8250_port *serial8250_find_match_or_unused(struct uart_port *port) +{ + int i; + + /* + * First, find a port entry which matches. + */ + for (i = 0; i < nr_uarts; i++) + if (uart_match_port(&serial8250_ports[i].port, port)) + return &serial8250_ports[i]; + + /* + * We didn't find a matching entry, so look for the first + * free entry. We look for one which hasn't been previously + * used (indicated by zero iobase). + */ + for (i = 0; i < nr_uarts; i++) + if (serial8250_ports[i].port.type == PORT_UNKNOWN && + serial8250_ports[i].port.iobase == 0) + return &serial8250_ports[i]; + + /* + * That also failed. Last resort is to find any entry which + * doesn't have a real port associated with it. + */ + for (i = 0; i < nr_uarts; i++) + if (serial8250_ports[i].port.type == PORT_UNKNOWN) + return &serial8250_ports[i]; + + return NULL; +} + +/** + * serial8250_register_8250_port - register a serial port + * @up: serial port template + * + * Configure the serial port specified by the request. If the + * port exists and is in use, it is hung up and unregistered + * first. + * + * The port is then probed and if necessary the IRQ is autodetected + * If this fails an error is returned. + * + * On success the port is ready to use and the line number is returned. + */ +int serial8250_register_8250_port(struct uart_8250_port *up) +{ + struct uart_8250_port *uart; + int ret = -ENOSPC; + + if (up->port.uartclk == 0) + return -EINVAL; + + mutex_lock(&serial_mutex); + + uart = serial8250_find_match_or_unused(&up->port); + if (uart && uart->port.type != PORT_8250_CIR) { + if (uart->port.dev) + uart_remove_one_port(&serial8250_reg, &uart->port); + + uart->port.iobase = up->port.iobase; + uart->port.membase = up->port.membase; + uart->port.irq = up->port.irq; + uart->port.irqflags = up->port.irqflags; + uart->port.uartclk = up->port.uartclk; + uart->port.fifosize = up->port.fifosize; + uart->port.regshift = up->port.regshift; + uart->port.iotype = up->port.iotype; + uart->port.flags = up->port.flags | UPF_BOOT_AUTOCONF; + uart->bugs = up->bugs; + uart->port.mapbase = up->port.mapbase; + uart->port.private_data = up->port.private_data; + uart->port.fifosize = up->port.fifosize; + uart->tx_loadsz = up->tx_loadsz; + uart->capabilities = up->capabilities; + + if (up->port.dev) + uart->port.dev = up->port.dev; + + if (up->port.flags & UPF_FIXED_TYPE) + serial8250_init_fixed_type_port(uart, up->port.type); + + set_io_from_upio(&uart->port); + /* Possibly override default I/O functions. */ + if (up->port.serial_in) + uart->port.serial_in = up->port.serial_in; + if (up->port.serial_out) + uart->port.serial_out = up->port.serial_out; + if (up->port.handle_irq) + uart->port.handle_irq = up->port.handle_irq; + /* Possibly override set_termios call */ + if (up->port.set_termios) + uart->port.set_termios = up->port.set_termios; + if (up->port.pm) + uart->port.pm = up->port.pm; + if (up->port.handle_break) + uart->port.handle_break = up->port.handle_break; + if (up->dl_read) + uart->dl_read = up->dl_read; + if (up->dl_write) + uart->dl_write = up->dl_write; + if (up->dma) + uart->dma = up->dma; + + if (serial8250_isa_config != NULL) + serial8250_isa_config(0, &uart->port, + &uart->capabilities); + + ret = uart_add_one_port(&serial8250_reg, &uart->port); + if (ret == 0) + ret = uart->port.line; + } + mutex_unlock(&serial_mutex); + + return ret; +} +EXPORT_SYMBOL(serial8250_register_8250_port); + +/** + * serial8250_unregister_port - remove a 16x50 serial port at runtime + * @line: serial line number + * + * Remove one serial port. This may not be called from interrupt + * context. We hand the port back to the our control. + */ +void serial8250_unregister_port(int line) +{ + struct uart_8250_port *uart = &serial8250_ports[line]; + + mutex_lock(&serial_mutex); + uart_remove_one_port(&serial8250_reg, &uart->port); + if (serial8250_isa_devs) { + uart->port.flags &= ~UPF_BOOT_AUTOCONF; + uart->port.type = PORT_UNKNOWN; + uart->port.dev = &serial8250_isa_devs->dev; + uart->capabilities = uart_config[uart->port.type].flags; + uart_add_one_port(&serial8250_reg, &uart->port); + } else { + uart->port.dev = NULL; + } + mutex_unlock(&serial_mutex); +} +EXPORT_SYMBOL(serial8250_unregister_port); + +static int __init serial8250_init(void) +{ + int ret; + + serial8250_isa_init_ports(); + + printk(KERN_INFO "Serial: 8250/16550 driver, " + "%d ports, IRQ sharing %sabled\n", nr_uarts, + share_irqs ? "en" : "dis"); + +#ifdef CONFIG_SPARC + ret = sunserial_register_minors(&serial8250_reg, UART_NR); +#else + serial8250_reg.nr = UART_NR; + ret = uart_register_driver(&serial8250_reg); +#endif + if (ret) + goto out; + + ret = serial8250_pnp_init(); + if (ret) + goto unreg_uart_drv; + + serial8250_isa_devs = platform_device_alloc("serial8250", + PLAT8250_DEV_LEGACY); + if (!serial8250_isa_devs) { + ret = -ENOMEM; + goto unreg_pnp; + } + + ret = platform_device_add(serial8250_isa_devs); + if (ret) + goto put_dev; + + serial8250_register_ports(&serial8250_reg, &serial8250_isa_devs->dev); + + ret = platform_driver_register(&serial8250_isa_driver); + if (ret == 0) + goto out; + + platform_device_del(serial8250_isa_devs); +put_dev: + platform_device_put(serial8250_isa_devs); +unreg_pnp: + serial8250_pnp_exit(); +unreg_uart_drv: +#ifdef CONFIG_SPARC + sunserial_unregister_minors(&serial8250_reg, UART_NR); +#else + uart_unregister_driver(&serial8250_reg); +#endif +out: + return ret; +} + +static void __exit serial8250_exit(void) +{ + struct platform_device *isa_dev = serial8250_isa_devs; + + /* + * This tells serial8250_unregister_port() not to re-register + * the ports (thereby making serial8250_isa_driver permanently + * in use.) + */ + serial8250_isa_devs = NULL; + + platform_driver_unregister(&serial8250_isa_driver); + platform_device_unregister(isa_dev); + + serial8250_pnp_exit(); + +#ifdef CONFIG_SPARC + sunserial_unregister_minors(&serial8250_reg, UART_NR); +#else + uart_unregister_driver(&serial8250_reg); +#endif +} + +module_init(serial8250_init); +module_exit(serial8250_exit); + +EXPORT_SYMBOL(serial8250_suspend_port); +EXPORT_SYMBOL(serial8250_resume_port); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Generic 8250/16x50 serial driver"); + +module_param(share_irqs, uint, 0644); +MODULE_PARM_DESC(share_irqs, "Share IRQs with other non-8250/16x50 devices" + " (unsafe)"); + +module_param(nr_uarts, uint, 0644); +MODULE_PARM_DESC(nr_uarts, "Maximum number of UARTs supported. (1-" __MODULE_STRING(CONFIG_SERIAL_8250_NR_UARTS) ")"); + +module_param(skip_txen_test, uint, 0644); +MODULE_PARM_DESC(skip_txen_test, "Skip checking for the TXEN bug at init time"); + +#ifdef CONFIG_SERIAL_8250_RSA +module_param_array(probe_rsa, ulong, &probe_rsa_count, 0444); +MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA"); +#endif +MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR); + +#ifndef MODULE +/* This module was renamed to 8250_core in 3.7. Keep the old "8250" name + * working as well for the module options so we don't break people. We + * need to keep the names identical and the convenient macros will happily + * refuse to let us do that by failing the build with redefinition errors + * of global variables. So we stick them inside a dummy function to avoid + * those conflicts. The options still get parsed, and the redefined + * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive. + * + * This is hacky. I'm sorry. + */ +static void __used s8250_options(void) +{ +#undef MODULE_PARAM_PREFIX +#define MODULE_PARAM_PREFIX "8250_core." + + module_param_cb(share_irqs, ¶m_ops_uint, &share_irqs, 0644); + module_param_cb(nr_uarts, ¶m_ops_uint, &nr_uarts, 0644); + module_param_cb(skip_txen_test, ¶m_ops_uint, &skip_txen_test, 0644); +#ifdef CONFIG_SERIAL_8250_RSA + __module_param_call(MODULE_PARAM_PREFIX, probe_rsa, + ¶m_array_ops, .arr = &__param_arr_probe_rsa, + 0444, -1); +#endif +} +#else +MODULE_ALIAS("8250_core"); +#endif diff --git a/drivers/tty/serial/8250/Makefile b/drivers/tty/serial/8250/Makefile index a23838a..36d68d0 100644 --- a/drivers/tty/serial/8250/Makefile +++ b/drivers/tty/serial/8250/Makefile @@ -2,10 +2,10 @@ # Makefile for the 8250 serial device drivers. # -obj-$(CONFIG_SERIAL_8250) += 8250_core.o -8250_core-y := 8250.o -8250_core-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o -8250_core-$(CONFIG_SERIAL_8250_DMA) += 8250_dma.o +obj-$(CONFIG_SERIAL_8250) += 8250.o +8250-y := 8250_core.o +8250-$(CONFIG_SERIAL_8250_PNP) += 8250_pnp.o +8250-$(CONFIG_SERIAL_8250_DMA) += 8250_dma.o obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o obj-$(CONFIG_SERIAL_8250_PCI) += 8250_pci.o obj-$(CONFIG_SERIAL_8250_HP300) += 8250_hp300.o -- cgit v1.1 From 9326b047e4fd4a8da72e59d913214a1803e9709c Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 19 Mar 2013 11:34:57 +0100 Subject: TTY: 8250, deprecated 8250_core.* options They were introduced by mistake in 3.7. Let's deprecate them now. For the reasons, see the text in Kconfig below. Signed-off-by: Jiri Slaby Cc: Josh Boyer Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_core.c | 2 ++ drivers/tty/serial/8250/Kconfig | 17 +++++++++++++++++ 2 files changed, 19 insertions(+) diff --git a/drivers/tty/serial/8250/8250_core.c b/drivers/tty/serial/8250/8250_core.c index 2d563cb..35f9c96 100644 --- a/drivers/tty/serial/8250/8250_core.c +++ b/drivers/tty/serial/8250/8250_core.c @@ -3418,6 +3418,7 @@ MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA"); #endif MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR); +#ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS #ifndef MODULE /* This module was renamed to 8250_core in 3.7. Keep the old "8250" name * working as well for the module options so we don't break people. We @@ -3446,3 +3447,4 @@ static void __used s8250_options(void) #else MODULE_ALIAS("8250_core"); #endif +#endif diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index 2ef9537..80fe91e 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -33,6 +33,23 @@ config SERIAL_8250 Most people will say Y or M here, so that they can use serial mice, modems and similar devices connecting to the standard serial ports. +config SERIAL_8250_DEPRECATED_OPTIONS + bool "Support 8250_core.* kernel options (DEPRECATED)" + depends on SERIAL_8250 + default y + ---help--- + In 3.7 we renamed 8250 to 8250_core by mistake, so now we have to + accept kernel parameters in both forms like 8250_core.nr_uarts=4 and + 8250.nr_uarts=4. We now renamed the module back to 8250, but if + anybody noticed in 3.7 and changed their userspace we still have to + keep the 8350_core.* options around until they revert the changes + they already did. + + If 8250 is built as a module, this adds 8250_core alias instead. + + If you did not notice yet and/or you have userspace from pre-3.7, it + is safe (and recommended) to say N here. + config SERIAL_8250_PNP bool "8250/16550 PNP device support" if EXPERT depends on SERIAL_8250 && PNP -- cgit v1.1 From 855f6fd941019ecc9525ca038b78f50c6c1e80a8 Mon Sep 17 00:00:00 2001 From: John Linn Date: Fri, 22 Mar 2013 18:49:27 +0100 Subject: Xilinx: ARM: UART: clear pending irqs before enabling irqs The Boot ROM has an issue which will cause the driver to lock up as pending irqs are not being cleared. With them cleared it prevents that issue. This patch is needed for the current (3.9-rc3) mainline kernel. I guess it went unnoticed, because it was only tested with u-boot up until now. And u-boot maybe handles this. [s.trumtrar@pengutronix.de: cherry-picked from linux-xlnx.git] Signed-off-by: Steffen Trumtrar Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/xilinx_uartps.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index ba451c7..f36bbba 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -578,6 +578,8 @@ static int xuartps_startup(struct uart_port *port) /* Receive Timeout register is enabled with value of 10 */ xuartps_writel(10, XUARTPS_RXTOUT_OFFSET); + /* Clear out any pending interrupts before enabling them */ + xuartps_writel(xuartps_readl(XUARTPS_ISR_OFFSET), XUARTPS_ISR_OFFSET); /* Set the Interrupt Registers with desired interrupts */ xuartps_writel(XUARTPS_IXR_TXEMPTY | XUARTPS_IXR_PARITY | -- cgit v1.1 From d8d595dfce7925627de78b9eecc8598a6ffda610 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Mon, 25 Mar 2013 19:22:31 -0600 Subject: block: removes dynamic allocation on stack This patch removes dynamic allocation on the stack error. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/dma.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index d523e9c..95047e1 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -986,7 +986,10 @@ void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) int j; int cnt; struct rsxx_dma *dma; - struct list_head issued_dmas[card->n_targets]; + struct list_head *issued_dmas; + + issued_dmas = kzalloc(sizeof(*issued_dmas) * card->n_targets, + GFP_KERNEL); for (i = 0; i < card->n_targets; i++) { INIT_LIST_HEAD(&issued_dmas[i]); @@ -1025,6 +1028,8 @@ void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) } spin_unlock(&card->ctrl[i].queue_lock); } + + kfree(issued_dmas); } void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card) -- cgit v1.1 From a1f6c6b147cc5e83ec36dab8370bd5ec5fa1def6 Mon Sep 17 00:00:00 2001 From: xunleer Date: Tue, 5 Mar 2013 07:44:20 +0000 Subject: ixgbevf: don't release the soft entries When the ixgbevf driver is opened the request to allocate MSIX irq vectors may fail. In that case the driver will call ixgbevf_down() which will call ixgbevf_irq_disable() to clear the HW interrupt registers and calls synchronize_irq() using the msix_entries pointer in the adapter structure. However, when the function to request the MSIX irq vectors failed it had already freed the msix_entries which causes an OOPs from using the NULL pointer in synchronize_irq(). The calls to pci_disable_msix() and to free the msix_entries memory should not occur if device open fails. Instead they should be called during device driver removal to balance with the call to pci_enable_msix() and the call to allocate msix_entries memory during the device probe and driver load. Signed-off-by: Li Xun Signed-off-by: Greg Rose Tested-by: Sibai Li Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 24 +++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index c3db6cd..2b6cb5c 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -944,9 +944,17 @@ free_queue_irqs: free_irq(adapter->msix_entries[vector].vector, adapter->q_vector[vector]); } - pci_disable_msix(adapter->pdev); - kfree(adapter->msix_entries); - adapter->msix_entries = NULL; + /* This failure is non-recoverable - it indicates the system is + * out of MSIX vector resources and the VF driver cannot run + * without them. Set the number of msix vectors to zero + * indicating that not enough can be allocated. The error + * will be returned to the user indicating device open failed. + * Any further attempts to force the driver to open will also + * fail. The only way to recover is to unload the driver and + * reload it again. If the system has recovered some MSIX + * vectors then it may succeed. + */ + adapter->num_msix_vectors = 0; return err; } @@ -2572,6 +2580,15 @@ static int ixgbevf_open(struct net_device *netdev) struct ixgbe_hw *hw = &adapter->hw; int err; + /* A previous failure to open the device because of a lack of + * available MSIX vector resources may have reset the number + * of msix vectors variable to zero. The only way to recover + * is to unload/reload the driver and hope that the system has + * been able to recover some MSIX vector resources. + */ + if (!adapter->num_msix_vectors) + return -ENOMEM; + /* disallow open during test */ if (test_bit(__IXGBEVF_TESTING, &adapter->state)) return -EBUSY; @@ -2628,7 +2645,6 @@ static int ixgbevf_open(struct net_device *netdev) err_req_irq: ixgbevf_down(adapter); - ixgbevf_free_irq(adapter); err_setup_rx: ixgbevf_free_all_rx_resources(adapter); err_setup_tx: -- cgit v1.1 From 22c12752d183f39aa8e2cc884cfcb23c0cb6d98d Mon Sep 17 00:00:00 2001 From: Lior Levy Date: Tue, 12 Mar 2013 15:49:32 +0000 Subject: igb: fix i350 anti spoofing config Fix a problem in i350 where anti spoofing configuration was written into a wrong register. Signed-off-by: Lior Levy Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/e1000_82575.c | 33 ++++++++++++++++------------ 1 file changed, 19 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/e1000_82575.c b/drivers/net/ethernet/intel/igb/e1000_82575.c index b64542a..12b1d84 100644 --- a/drivers/net/ethernet/intel/igb/e1000_82575.c +++ b/drivers/net/ethernet/intel/igb/e1000_82575.c @@ -1818,27 +1818,32 @@ out: **/ void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf) { - u32 dtxswc; + u32 reg_val, reg_offset; switch (hw->mac.type) { case e1000_82576: + reg_offset = E1000_DTXSWC; + break; case e1000_i350: - dtxswc = rd32(E1000_DTXSWC); - if (enable) { - dtxswc |= (E1000_DTXSWC_MAC_SPOOF_MASK | - E1000_DTXSWC_VLAN_SPOOF_MASK); - /* The PF can spoof - it has to in order to - * support emulation mode NICs */ - dtxswc ^= (1 << pf | 1 << (pf + MAX_NUM_VFS)); - } else { - dtxswc &= ~(E1000_DTXSWC_MAC_SPOOF_MASK | - E1000_DTXSWC_VLAN_SPOOF_MASK); - } - wr32(E1000_DTXSWC, dtxswc); + reg_offset = E1000_TXSWC; break; default: - break; + return; + } + + reg_val = rd32(reg_offset); + if (enable) { + reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK | + E1000_DTXSWC_VLAN_SPOOF_MASK); + /* The PF can spoof - it has to in order to + * support emulation mode NICs + */ + reg_val ^= (1 << pf | 1 << (pf + MAX_NUM_VFS)); + } else { + reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK | + E1000_DTXSWC_VLAN_SPOOF_MASK); } + wr32(reg_offset, reg_val); } /** -- cgit v1.1 From d0f63acc2ff354a525f7bc7ba90e81f49b6c2ef8 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Wed, 13 Mar 2013 15:50:24 +0000 Subject: igb: Fix null pointer dereference The max_vfs= option has always been self limiting to the number of VFs supported by the device. fa44f2f1 added SR-IOV configuration via sysfs, but in the process broke this self correction factor. The failing path is: igb_probe igb_sw_init if (max_vfs > 7) { adapter->vfs_allocated_count = 7; ... igb_probe_vfs igb_enable_sriov(, max_vfs) if (num_vfs > 7) { err = -EPERM; ... This leaves vfs_allocated_count = 7 and vf_data = NULL, so we bomb out when igb_probe finally calls igb_reset. It seems like a really bad idea, and somewhat pointless, to set vfs_allocated_count separate from vf_data, but limiting max_vfs is enough to avoid the null pointer. Signed-off-by: Alex Williamson Acked-by: Greg Rose Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 4dbd629..2ae8886 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2652,7 +2652,7 @@ static int igb_sw_init(struct igb_adapter *adapter) if (max_vfs > 7) { dev_warn(&pdev->dev, "Maximum of 7 VFs per PF, using max\n"); - adapter->vfs_allocated_count = 7; + max_vfs = adapter->vfs_allocated_count = 7; } else adapter->vfs_allocated_count = max_vfs; if (adapter->vfs_allocated_count) -- cgit v1.1 From d5e51a10d21761faaf069cac6f1c0311cf332820 Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Wed, 13 Mar 2013 15:50:29 +0000 Subject: igb: SR-IOV init reordering igb is ineffective at setting a lower total VFs because: int pci_sriov_set_totalvfs(struct pci_dev *dev, u16 numvfs) { ... /* Shouldn't change if VFs already enabled */ if (dev->sriov->ctrl & PCI_SRIOV_CTRL_VFE) return -EBUSY; Swap init ordering. Signed-off-by: Alex Williamson Acked-by: Greg Rose Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 2ae8886..8496adf 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2542,8 +2542,8 @@ static void igb_probe_vfs(struct igb_adapter *adapter) if ((hw->mac.type == e1000_i210) || (hw->mac.type == e1000_i211)) return; - igb_enable_sriov(pdev, max_vfs); pci_sriov_set_totalvfs(pdev, 7); + igb_enable_sriov(pdev, max_vfs); #endif /* CONFIG_PCI_IOV */ } -- cgit v1.1 From 05ec29e8fa9b6ec8d4ad5d2f6d5fc5467c7970bc Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Wed, 20 Mar 2013 09:06:29 +0000 Subject: igb: make sensor info static Trivial sparse warning. Signed-off-by: Stephen Hemminger Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_hwmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_hwmon.c b/drivers/net/ethernet/intel/igb/igb_hwmon.c index 4623502..0478a1a 100644 --- a/drivers/net/ethernet/intel/igb/igb_hwmon.c +++ b/drivers/net/ethernet/intel/igb/igb_hwmon.c @@ -39,7 +39,7 @@ #include #ifdef CONFIG_IGB_HWMON -struct i2c_board_info i350_sensor_info = { +static struct i2c_board_info i350_sensor_info = { I2C_BOARD_INFO("i350bb", (0Xf8 >> 1)), }; -- cgit v1.1 From 75517d92119a3cd364f618ee962055b3ded8c396 Mon Sep 17 00:00:00 2001 From: Jiri Benc Date: Wed, 20 Mar 2013 09:06:34 +0000 Subject: igb: fix PHC stopping on max freq For 82576 MAC type, max_adj is reported as 1000000000 ppb. However, if this value is passed to igb_ptp_adjfreq_82576, incvalue overflows out of INCVALUE_82576_MASK, resulting in setting of zero TIMINCA.incvalue, stopping the PHC (instead of going at twice the nominal speed). Fix the advertised max_adj value to the largest value hardware can handle. As there is no min_adj value available (-max_adj is used instead), this will also prevent stopping the clock intentionally. It's probably not a big deal, other igb MAC types don't support stopping the clock, either. Signed-off-by: Jiri Benc Acked-by: Matthew Vick Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_ptp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/igb/igb_ptp.c b/drivers/net/ethernet/intel/igb/igb_ptp.c index 0987822..0a23750 100644 --- a/drivers/net/ethernet/intel/igb/igb_ptp.c +++ b/drivers/net/ethernet/intel/igb/igb_ptp.c @@ -740,7 +740,7 @@ void igb_ptp_init(struct igb_adapter *adapter) case e1000_82576: snprintf(adapter->ptp_caps.name, 16, "%pm", netdev->dev_addr); adapter->ptp_caps.owner = THIS_MODULE; - adapter->ptp_caps.max_adj = 1000000000; + adapter->ptp_caps.max_adj = 999999881; adapter->ptp_caps.n_ext_ts = 0; adapter->ptp_caps.pps = 0; adapter->ptp_caps.adjfreq = igb_ptp_adjfreq_82576; -- cgit v1.1 From 751c644b95bb48aaa8825f0c66abbcc184d92051 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Tue, 26 Mar 2013 02:27:11 -0700 Subject: pid: Handle the exit of a multi-threaded init. When a multi-threaded init exits and the initial thread is not the last thread to exit the initial thread hangs around as a zombie until the last thread exits. In that case zap_pid_ns_processes needs to wait until there are only 2 hashed pids in the pid namespace not one. v2. Replace thread_pid_vnr(me) == 1 with the test thread_group_leader(me) as suggested by Oleg. Cc: stable@vger.kernel.org Cc: Oleg Nesterov Reported-by: Caj Larsson Signed-off-by: "Eric W. Biederman" --- kernel/pid_namespace.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c index c1c3dc1..bea15bd 100644 --- a/kernel/pid_namespace.c +++ b/kernel/pid_namespace.c @@ -181,6 +181,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) int nr; int rc; struct task_struct *task, *me = current; + int init_pids = thread_group_leader(me) ? 1 : 2; /* Don't allow any more processes into the pid namespace */ disable_pid_allocation(pid_ns); @@ -230,7 +231,7 @@ void zap_pid_ns_processes(struct pid_namespace *pid_ns) */ for (;;) { set_current_state(TASK_UNINTERRUPTIBLE); - if (pid_ns->nr_hashed == 1) + if (pid_ns->nr_hashed == init_pids) break; schedule(); } -- cgit v1.1 From 35ccecef6ed48a5602755ddf580c45a026a1dc05 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 25 Mar 2013 14:45:54 -0300 Subject: [media] [REGRESSION] bt8xx: Fix too large height in cropcap Since commit a1fd287780c8e91fed4957b30c757b0c93021162: "[media] bttv-driver: fix two warnings" cropcap.defrect.height and cropcap.bounds.height for the PAL entry are 32 resp 30 pixels too large, if a userspace app (ie xawtv) actually tries to use the full advertised height, the resulting image is broken in ways only a screenshot can describe. The cause of this is the fix for this warning: drivers/media/pci/bt8xx/bttv-driver.c:308:3: warning: initialized field overwritten [-Woverride-init] In this chunk of the commit: @@ -301,11 +301,10 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* totalwidth */ 1135, /* sqwidth */ 944, /* vdelay */ 0x20, - /* sheight */ 576, - /* videostart0 */ 23) /* bt878 (and bt848?) can capture another line below active video. */ - .cropcap.bounds.height = (576 + 2) + 0x20 - 2, + /* sheight */ (576 + 2) + 0x20 - 2, + /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR, .name = "NTSC", Which replaces the overriding of cropcap.bounds.height initialization outside of the CROPCAP macro (which also initializes it), with passing a different sheight value to the CROPCAP macro. There are 2 problems with this warning fix: 1) The sheight value is used twice in the CROPCAP macro, and the old code only changed one resulting value. 2) The old code increased the .cropcap.bounds.height value (and did not touch the .cropcap.defrect.height value at all) by 2, where as the fixed code increases it by 32, as the fixed code passes (576 + 2) + 0x20 - 2 to the CROPCAP macro, but the + 0x20 - 2 is already done by the macro so now is done twice for .cropcap.bounds.height, and also is applied to .cropcap.defrect.height where it should not be applied at all. This patch fixes this by adding an extraheight parameter to the CROPCAP entry and using it for the PAL entry. Cc: stable@kernel.org # For Kernel 3.8 Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab --- drivers/media/pci/bt8xx/bttv-driver.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/media/pci/bt8xx/bttv-driver.c b/drivers/media/pci/bt8xx/bttv-driver.c index ccd18e4..54579e4 100644 --- a/drivers/media/pci/bt8xx/bttv-driver.c +++ b/drivers/media/pci/bt8xx/bttv-driver.c @@ -250,17 +250,19 @@ static u8 SRAM_Table[][60] = vdelay start of active video in 2 * field lines relative to trailing edge of /VRESET pulse (VDELAY register). sheight height of active video in 2 * field lines. + extraheight Added to sheight for cropcap.bounds.height only videostart0 ITU-R frame line number of the line corresponding to vdelay in the first field. */ #define CROPCAP(minhdelayx1, hdelayx1, swidth, totalwidth, sqwidth, \ - vdelay, sheight, videostart0) \ + vdelay, sheight, extraheight, videostart0) \ .cropcap.bounds.left = minhdelayx1, \ /* * 2 because vertically we count field lines times two, */ \ /* e.g. 23 * 2 to 23 * 2 + 576 in PAL-BGHI defrect. */ \ .cropcap.bounds.top = (videostart0) * 2 - (vdelay) + MIN_VDELAY, \ /* 4 is a safety margin at the end of the line. */ \ .cropcap.bounds.width = (totalwidth) - (minhdelayx1) - 4, \ - .cropcap.bounds.height = (sheight) + (vdelay) - MIN_VDELAY, \ + .cropcap.bounds.height = (sheight) + (extraheight) + (vdelay) - \ + MIN_VDELAY, \ .cropcap.defrect.left = hdelayx1, \ .cropcap.defrect.top = (videostart0) * 2, \ .cropcap.defrect.width = swidth, \ @@ -301,9 +303,10 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* totalwidth */ 1135, /* sqwidth */ 944, /* vdelay */ 0x20, - /* bt878 (and bt848?) can capture another - line below active video. */ - /* sheight */ (576 + 2) + 0x20 - 2, + /* sheight */ 576, + /* bt878 (and bt848?) can capture another + line below active video. */ + /* extraheight */ 2, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_KR, @@ -330,6 +333,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 780, /* vdelay */ 0x1a, /* sheight */ 480, + /* extraheight */ 0, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_SECAM, @@ -355,6 +359,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 944, /* vdelay */ 0x20, /* sheight */ 576, + /* extraheight */ 0, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_PAL_Nc, @@ -380,6 +385,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 780, /* vdelay */ 0x1a, /* sheight */ 576, + /* extraheight */ 0, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_PAL_M, @@ -405,6 +411,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 780, /* vdelay */ 0x1a, /* sheight */ 480, + /* extraheight */ 0, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_PAL_N, @@ -430,6 +437,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 944, /* vdelay */ 0x20, /* sheight */ 576, + /* extraheight */ 0, /* videostart0 */ 23) },{ .v4l2_id = V4L2_STD_NTSC_M_JP, @@ -455,6 +463,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 780, /* vdelay */ 0x16, /* sheight */ 480, + /* extraheight */ 0, /* videostart0 */ 23) },{ /* that one hopefully works with the strange timing @@ -484,6 +493,7 @@ const struct bttv_tvnorm bttv_tvnorms[] = { /* sqwidth */ 944, /* vdelay */ 0x1a, /* sheight */ 480, + /* extraheight */ 0, /* videostart0 */ 23) } }; -- cgit v1.1 From 4fdc782416b29b77681ceec9ba74cdf5ee5e4051 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Mon, 11 Mar 2013 22:21:28 +0800 Subject: x86, io_apic: remove duplicated include from irq_remapping.c Remove duplicated include. Signed-off-by: Wei Yongjun Signed-off-by: Joerg Roedel --- drivers/iommu/irq_remapping.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index d56f8c1..7c11ff3 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -2,7 +2,6 @@ #include #include #include -#include #include #include #include -- cgit v1.1 From 76a0e68129d7d24eb995a6871ab47081bbfa0acc Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Mon, 25 Mar 2013 22:26:21 +0000 Subject: pch_gbe: fix ip_summed checksum reporting on rx skb->ip_summed should be CHECKSUM_UNNECESSARY when the driver reports that checksums were correct and CHECKSUM_NONE in any other case. They're currently placed vice versa, which breaks the forwarding scenario. Fix it by placing them as described above. Signed-off-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c index 39ab4d0..73ce7dd 100644 --- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c +++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c @@ -1726,9 +1726,9 @@ pch_gbe_clean_rx(struct pch_gbe_adapter *adapter, skb->protocol = eth_type_trans(skb, netdev); if (tcp_ip_status & PCH_GBE_RXD_ACC_STAT_TCPIPOK) - skb->ip_summed = CHECKSUM_NONE; - else skb->ip_summed = CHECKSUM_UNNECESSARY; + else + skb->ip_summed = CHECKSUM_NONE; napi_gro_receive(&adapter->napi, skb); (*work_done)++; -- cgit v1.1 From eba0e3c3a0ba7b96f01cbe997680f6a4401a0bfc Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Tue, 26 Mar 2013 10:49:55 +0800 Subject: USB: serial: fix hang when opening port Johan's 'fix use-after-free in TIOCMIWAIT' patchset[1] introduces one bug which can cause kernel hang when opening port. This patch initialized the 'port->delta_msr_wait' waitqueue head to fix the bug which is introduced in 3.9-rc4. [1], http://marc.info/?l=linux-usb&m=136368139627876&w=2 Cc: stable Signed-off-by: Ming Lei Acked-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb-serial.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 2e70efa..5d9b178 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -903,6 +903,7 @@ static int usb_serial_probe(struct usb_interface *interface, port->port.ops = &serial_port_ops; port->serial = serial; spin_lock_init(&port->lock); + init_waitqueue_head(&port->delta_msr_wait); /* Keep this for private driver use for the moment but should probably go away */ INIT_WORK(&port->work, usb_serial_port_work); -- cgit v1.1 From 14134f6584212d585b310ce95428014b653dfaf6 Mon Sep 17 00:00:00 2001 From: dingtianhong Date: Mon, 25 Mar 2013 17:02:04 +0000 Subject: af_unix: dont send SCM_CREDENTIAL when dest socket is NULL SCM_SCREDENTIALS should apply to write() syscalls only either source or destination socket asserted SOCK_PASSCRED. The original implememtation in maybe_add_creds is wrong, and breaks several LSB testcases ( i.e. /tset/LSB.os/netowkr/recvfrom/T.recvfrom). Origionally-authored-by: Karel Srot Signed-off-by: Ding Tianhong Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/unix/af_unix.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index f153a8d..971282b 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1412,8 +1412,8 @@ static void maybe_add_creds(struct sk_buff *skb, const struct socket *sock, if (UNIXCB(skb).cred) return; if (test_bit(SOCK_PASSCRED, &sock->flags) || - !other->sk_socket || - test_bit(SOCK_PASSCRED, &other->sk_socket->flags)) { + (other->sk_socket && + test_bit(SOCK_PASSCRED, &other->sk_socket->flags))) { UNIXCB(skb).pid = get_pid(task_tgid(current)); UNIXCB(skb).cred = get_current_cred(); } -- cgit v1.1 From 9fe16b78ee17579cb4f333534cf7043e94c67024 Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Tue, 26 Mar 2013 17:43:28 +0100 Subject: bonding: remove already created master sysfs link on failure If slave sysfs symlink failes to be created - we end up without removing the master sysfs symlink. Remove it in case of failure. Signed-off-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/bonding/bond_sysfs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index 1c9e09f..db103e0 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -183,6 +183,11 @@ int bond_create_slave_symlinks(struct net_device *master, sprintf(linkname, "slave_%s", slave->name); ret = sysfs_create_link(&(master->dev.kobj), &(slave->dev.kobj), linkname); + + /* free the master link created earlier in case of error */ + if (ret) + sysfs_remove_link(&(slave->dev.kobj), "master"); + return ret; } -- cgit v1.1 From 4adaa611020fa6ac65b0ac8db78276af4ec04e63 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Tue, 26 Mar 2013 13:07:00 -0400 Subject: Btrfs: fix race between mmap writes and compression Btrfs uses page_mkwrite to ensure stable pages during crc calculations and mmap workloads. We call clear_page_dirty_for_io before we do any crcs, and this forces any application with the file mapped to wait for the crc to finish before it is allowed to change the file. With compression on, the clear_page_dirty_for_io step is happening after we've compressed the pages. This means the applications might be changing the pages while we are compressing them, and some of those modifications might not hit the disk. This commit adds the clear_page_dirty_for_io before compression starts and makes sure to redirty the page if we have to fallback to uncompressed IO as well. Signed-off-by: Chris Mason Reported-by: Alexandre Oliva cc: stable@vger.kernel.org --- fs/btrfs/extent_io.c | 33 +++++++++++++++++++++++++++++++++ fs/btrfs/extent_io.h | 2 ++ fs/btrfs/inode.c | 14 ++++++++++++++ 3 files changed, 49 insertions(+) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index f173c5a..cdee391 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -1257,6 +1257,39 @@ int unlock_extent(struct extent_io_tree *tree, u64 start, u64 end) GFP_NOFS); } +int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end) +{ + unsigned long index = start >> PAGE_CACHE_SHIFT; + unsigned long end_index = end >> PAGE_CACHE_SHIFT; + struct page *page; + + while (index <= end_index) { + page = find_get_page(inode->i_mapping, index); + BUG_ON(!page); /* Pages should be in the extent_io_tree */ + clear_page_dirty_for_io(page); + page_cache_release(page); + index++; + } + return 0; +} + +int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end) +{ + unsigned long index = start >> PAGE_CACHE_SHIFT; + unsigned long end_index = end >> PAGE_CACHE_SHIFT; + struct page *page; + + while (index <= end_index) { + page = find_get_page(inode->i_mapping, index); + BUG_ON(!page); /* Pages should be in the extent_io_tree */ + account_page_redirty(page); + __set_page_dirty_nobuffers(page); + page_cache_release(page); + index++; + } + return 0; +} + /* * helper function to set both pages and extents in the tree writeback */ diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index 6068a19..258c921 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -325,6 +325,8 @@ int map_private_extent_buffer(struct extent_buffer *eb, unsigned long offset, unsigned long *map_len); int extent_range_uptodate(struct extent_io_tree *tree, u64 start, u64 end); +int extent_range_clear_dirty_for_io(struct inode *inode, u64 start, u64 end); +int extent_range_redirty_for_io(struct inode *inode, u64 start, u64 end); int extent_clear_unlock_delalloc(struct inode *inode, struct extent_io_tree *tree, u64 start, u64 end, struct page *locked_page, diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1f268888..6a6e13c 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -353,6 +353,7 @@ static noinline int compress_file_range(struct inode *inode, int i; int will_compress; int compress_type = root->fs_info->compress_type; + int redirty = 0; /* if this is a small write inside eof, kick off a defrag */ if ((end - start + 1) < 16 * 1024 && @@ -415,6 +416,17 @@ again: if (BTRFS_I(inode)->force_compress) compress_type = BTRFS_I(inode)->force_compress; + /* + * we need to call clear_page_dirty_for_io on each + * page in the range. Otherwise applications with the file + * mmap'd can wander in and change the page contents while + * we are compressing them. + * + * If the compression fails for any reason, we set the pages + * dirty again later on. + */ + extent_range_clear_dirty_for_io(inode, start, end); + redirty = 1; ret = btrfs_compress_pages(compress_type, inode->i_mapping, start, total_compressed, pages, @@ -554,6 +566,8 @@ cleanup_and_bail_uncompressed: __set_page_dirty_nobuffers(locked_page); /* unlocked later on in the async handlers */ } + if (redirty) + extent_range_redirty_for_io(inode, start, end); add_async_extent(async_cow, start, end - start + 1, 0, NULL, 0, BTRFS_COMPRESS_NONE); *num_added += 1; -- cgit v1.1 From 330305cc4a6b0cb75c22fc01b8826f0ad755550f Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Sun, 24 Mar 2013 17:36:29 +0000 Subject: ipv4: Fix ip-header identification for gso packets. ip-header id needs to be incremented even if IP_DF flag is set. This behaviour was changed in commit 490ab08127cebc25e3a26 (IP_GRE: Fix IP-Identification). Following patch fixes it so that identification is always incremented. Reported-by: Cong Wang Signed-off-by: Pravin B Shelar Signed-off-by: David S. Miller --- include/net/ipip.h | 16 ++++++---------- net/ipv4/af_inet.c | 3 +-- 2 files changed, 7 insertions(+), 12 deletions(-) diff --git a/include/net/ipip.h b/include/net/ipip.h index fd19625..982141c1 100644 --- a/include/net/ipip.h +++ b/include/net/ipip.h @@ -77,15 +77,11 @@ static inline void tunnel_ip_select_ident(struct sk_buff *skb, { struct iphdr *iph = ip_hdr(skb); - if (iph->frag_off & htons(IP_DF)) - iph->id = 0; - else { - /* Use inner packet iph-id if possible. */ - if (skb->protocol == htons(ETH_P_IP) && old_iph->id) - iph->id = old_iph->id; - else - __ip_select_ident(iph, dst, - (skb_shinfo(skb)->gso_segs ?: 1) - 1); - } + /* Use inner packet iph-id if possible. */ + if (skb->protocol == htons(ETH_P_IP) && old_iph->id) + iph->id = old_iph->id; + else + __ip_select_ident(iph, dst, + (skb_shinfo(skb)->gso_segs ?: 1) - 1); } #endif diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 68f6a94..c929d9c 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1333,8 +1333,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb, iph->frag_off |= htons(IP_MF); offset += (skb->len - skb->mac_len - iph->ihl * 4); } else { - if (!(iph->frag_off & htons(IP_DF))) - iph->id = htons(id++); + iph->id = htons(id++); } iph->tot_len = htons(skb->len - skb->mac_len); iph->check = 0; -- cgit v1.1 From eddc0a3abff273842a94784d2d022bbc36dc9015 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 21 Mar 2013 02:30:41 -0700 Subject: yama: Better permission check for ptraceme Change the permission check for yama_ptrace_ptracee to the standard ptrace permission check, testing if the traceer has CAP_SYS_PTRACE in the tracees user namespace. Reviewed-by: Kees Cook Signed-off-by: "Eric W. Biederman" --- security/yama/yama_lsm.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c index 23414b9..13c88fbc 100644 --- a/security/yama/yama_lsm.c +++ b/security/yama/yama_lsm.c @@ -347,10 +347,8 @@ int yama_ptrace_traceme(struct task_struct *parent) /* Only disallow PTRACE_TRACEME on more aggressive settings. */ switch (ptrace_scope) { case YAMA_SCOPE_CAPABILITY: - rcu_read_lock(); - if (!ns_capable(__task_cred(parent)->user_ns, CAP_SYS_PTRACE)) + if (!has_ns_capability(parent, current_user_ns(), CAP_SYS_PTRACE)) rc = -EPERM; - rcu_read_unlock(); break; case YAMA_SCOPE_NO_ATTACH: rc = -EPERM; -- cgit v1.1 From 4dcaf47258d59010802bd0eda933f69ee7d98cc7 Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Tue, 26 Mar 2013 11:03:07 -0500 Subject: rsxx: enable error return of rsxx_eeh_save_issued_dmas() Commit d8d595df introduced a bug where we did not check for a NULL return from kmalloc(). Make rsxx_eeh_save_issued_dmas() return an error for that case, and make the callers handle that. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/core.c | 19 ++++++++++++++++--- drivers/block/rsxx/dma.c | 6 +++++- drivers/block/rsxx/rsxx_priv.h | 2 +- 3 files changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c index 93f2819..5af21f2 100644 --- a/drivers/block/rsxx/core.c +++ b/drivers/block/rsxx/core.c @@ -323,10 +323,11 @@ static int card_shutdown(struct rsxx_cardinfo *card) return 0; } -static void rsxx_eeh_frozen(struct pci_dev *dev) +static int rsxx_eeh_frozen(struct pci_dev *dev) { struct rsxx_cardinfo *card = pci_get_drvdata(dev); int i; + int st; dev_warn(&dev->dev, "IBM FlashSystem PCI: preparing for slot reset.\n"); @@ -342,7 +343,9 @@ static void rsxx_eeh_frozen(struct pci_dev *dev) pci_disable_device(dev); - rsxx_eeh_save_issued_dmas(card); + st = rsxx_eeh_save_issued_dmas(card); + if (st) + return st; rsxx_eeh_save_issued_creg(card); @@ -356,6 +359,8 @@ static void rsxx_eeh_frozen(struct pci_dev *dev) card->ctrl[i].cmd.buf, card->ctrl[i].cmd.dma_addr); } + + return 0; } static void rsxx_eeh_failure(struct pci_dev *dev) @@ -399,6 +404,8 @@ static int rsxx_eeh_fifo_flush_poll(struct rsxx_cardinfo *card) static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev, enum pci_channel_state error) { + int st; + if (dev->revision < RSXX_EEH_SUPPORT) return PCI_ERS_RESULT_NONE; @@ -407,7 +414,13 @@ static pci_ers_result_t rsxx_error_detected(struct pci_dev *dev, return PCI_ERS_RESULT_DISCONNECT; } - rsxx_eeh_frozen(dev); + st = rsxx_eeh_frozen(dev); + if (st) { + dev_err(&dev->dev, "Slot reset setup failed\n"); + rsxx_eeh_failure(dev); + return PCI_ERS_RESULT_DISCONNECT; + } + return PCI_ERS_RESULT_NEED_RESET; } diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index 95047e1..7594c6d 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -980,7 +980,7 @@ void rsxx_dma_destroy(struct rsxx_cardinfo *card) } } -void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) +int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) { int i; int j; @@ -990,6 +990,8 @@ void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) issued_dmas = kzalloc(sizeof(*issued_dmas) * card->n_targets, GFP_KERNEL); + if (!issued_dmas) + return -ENOMEM; for (i = 0; i < card->n_targets; i++) { INIT_LIST_HEAD(&issued_dmas[i]); @@ -1030,6 +1032,8 @@ void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card) } kfree(issued_dmas); + + return 0; } void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card) diff --git a/drivers/block/rsxx/rsxx_priv.h b/drivers/block/rsxx/rsxx_priv.h index 8a7ac87..382e8bf 100644 --- a/drivers/block/rsxx/rsxx_priv.h +++ b/drivers/block/rsxx/rsxx_priv.h @@ -381,7 +381,7 @@ int rsxx_dma_queue_bio(struct rsxx_cardinfo *card, rsxx_dma_cb cb, void *cb_data); int rsxx_hw_buffers_init(struct pci_dev *dev, struct rsxx_dma_ctrl *ctrl); -void rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card); +int rsxx_eeh_save_issued_dmas(struct rsxx_cardinfo *card); void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card); int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card); -- cgit v1.1 From 80b00df291684850b5659ec95fb1fd2acbd2c0ec Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Tue, 26 Mar 2013 11:06:35 -0500 Subject: rsxx: remove unused variable Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/dma.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/block/rsxx/dma.c b/drivers/block/rsxx/dma.c index 7594c6d..0607513 100644 --- a/drivers/block/rsxx/dma.c +++ b/drivers/block/rsxx/dma.c @@ -1056,7 +1056,6 @@ void rsxx_eeh_cancel_dmas(struct rsxx_cardinfo *card) int rsxx_eeh_remap_dmas(struct rsxx_cardinfo *card) { struct rsxx_dma *dma; - struct rsxx_dma *tmp; int i; for (i = 0; i < card->n_targets; i++) { -- cgit v1.1 From 7ea600b5314529f9d1b9d6d3c41cb26fce6a7a4a Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Mar 2013 18:25:57 -0400 Subject: Nest rename_lock inside vfsmount_lock ... lest we get livelocks between path_is_under() and d_path() and friends. The thing is, wrt fairness lglocks are more similar to rwsems than to rwlocks; it is possible to have thread B spin on attempt to take lock shared while thread A is already holding it shared, if B is on lower-numbered CPU than A and there's a thread C spinning on attempt to take the same lock exclusive. As the result, we need consistent ordering between vfsmount_lock (lglock) and rename_lock (seq_lock), even though everything that takes both is going to take vfsmount_lock only shared. Spotted-by: Brad Spengler Cc: stable@vger.kernel.org Signed-off-by: Al Viro --- fs/dcache.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/fs/dcache.c b/fs/dcache.c index fbfae008..e8bc342 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -2542,7 +2542,6 @@ static int prepend_path(const struct path *path, bool slash = false; int error = 0; - br_read_lock(&vfsmount_lock); while (dentry != root->dentry || vfsmnt != root->mnt) { struct dentry * parent; @@ -2572,8 +2571,6 @@ static int prepend_path(const struct path *path, if (!error && !slash) error = prepend(buffer, buflen, "/", 1); -out: - br_read_unlock(&vfsmount_lock); return error; global_root: @@ -2590,7 +2587,7 @@ global_root: error = prepend(buffer, buflen, "/", 1); if (!error) error = is_mounted(vfsmnt) ? 1 : 2; - goto out; + return error; } /** @@ -2617,9 +2614,11 @@ char *__d_path(const struct path *path, int error; prepend(&res, &buflen, "\0", 1); + br_read_lock(&vfsmount_lock); write_seqlock(&rename_lock); error = prepend_path(path, root, &res, &buflen); write_sequnlock(&rename_lock); + br_read_unlock(&vfsmount_lock); if (error < 0) return ERR_PTR(error); @@ -2636,9 +2635,11 @@ char *d_absolute_path(const struct path *path, int error; prepend(&res, &buflen, "\0", 1); + br_read_lock(&vfsmount_lock); write_seqlock(&rename_lock); error = prepend_path(path, &root, &res, &buflen); write_sequnlock(&rename_lock); + br_read_unlock(&vfsmount_lock); if (error > 1) error = -EINVAL; @@ -2702,11 +2703,13 @@ char *d_path(const struct path *path, char *buf, int buflen) return path->dentry->d_op->d_dname(path->dentry, buf, buflen); get_fs_root(current->fs, &root); + br_read_lock(&vfsmount_lock); write_seqlock(&rename_lock); error = path_with_deleted(path, &root, &res, &buflen); + write_sequnlock(&rename_lock); + br_read_unlock(&vfsmount_lock); if (error < 0) res = ERR_PTR(error); - write_sequnlock(&rename_lock); path_put(&root); return res; } @@ -2830,6 +2833,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) get_fs_root_and_pwd(current->fs, &root, &pwd); error = -ENOENT; + br_read_lock(&vfsmount_lock); write_seqlock(&rename_lock); if (!d_unlinked(pwd.dentry)) { unsigned long len; @@ -2839,6 +2843,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) prepend(&cwd, &buflen, "\0", 1); error = prepend_path(&pwd, &root, &cwd, &buflen); write_sequnlock(&rename_lock); + br_read_unlock(&vfsmount_lock); if (error < 0) goto out; @@ -2859,6 +2864,7 @@ SYSCALL_DEFINE2(getcwd, char __user *, buf, unsigned long, size) } } else { write_sequnlock(&rename_lock); + br_read_unlock(&vfsmount_lock); } out: -- cgit v1.1 From 469dd1c4ac0869cf7d1f87eac9b5a93865c10b76 Mon Sep 17 00:00:00 2001 From: Fabio Valentini Date: Mon, 11 Mar 2013 19:16:34 +0000 Subject: ACPI / PM: fix suspend and resume on Sony Vaio VGN-FW21M Add Sony Vaio VGN-FW21M to the device blacklist in drivers/acpi/sleep.c. Fixes suspend/resume on this device (device no longer reboots instead of resuming). References: https://bugzilla.kernel.org/show_bug.cgi?id=55001 Signed-off-by: Fabio Valentini Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sleep.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 2421303..9c1a435 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -193,6 +193,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { }, { .callback = init_nvs_nosave, + .ident = "Sony Vaio VGN-FW21M", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21M"), + }, + }, + { + .callback = init_nvs_nosave, .ident = "Sony Vaio VPCEB17FX", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), -- cgit v1.1 From aaf9d93be71c68558c25b4052ac979ee6b7eb809 Mon Sep 17 00:00:00 2001 From: Chen Gong Date: Tue, 19 Mar 2013 06:48:07 +0000 Subject: ACPI / APEI: fix error status check condition for CPER In Table 18-289, ACPI5.0 SPEC, the error data length in CPER Generic Error Data Entry can be 0, which means this generic error data entry can have only one header. So fix the check conditon for it. Signed-off-by: Chen Gong Reviewed-by: Huang Ying Signed-off-by: Rafael J. Wysocki --- drivers/acpi/apei/cper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c index 1e5d8a4..fefc2ca 100644 --- a/drivers/acpi/apei/cper.c +++ b/drivers/acpi/apei/cper.c @@ -405,7 +405,7 @@ int apei_estatus_check(const struct acpi_hest_generic_status *estatus) return rc; data_len = estatus->data_length; gdata = (struct acpi_hest_generic_data *)(estatus + 1); - while (data_len > sizeof(*gdata)) { + while (data_len >= sizeof(*gdata)) { gedata_len = gdata->error_data_length; if (gedata_len > data_len - sizeof(*gdata)) return -EINVAL; -- cgit v1.1 From b8b6611048b7b57b86fbdc9153649ad4dc52135f Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 11 Mar 2013 05:05:16 +0000 Subject: PCI / ACPI: hold acpi_scan_lock during root bus hotplug During merging the PCI tree with the PM/ACPI tree, Linus noticed that we don't use the same lock using patten about ACPI PCI root as acpiphp. Here apply the same locking patten, and we need to execute acpi_bus_hot_remove_device() via acpi_os_hotplug_execute() as it also holds acpi_scan_lock. [rjw: Changelog] Reported-by: Linus Torvalds Signed-off-by: Yinghai Lu No-objection-from: Bjorn Helgaas Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pci_root.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 0ac546d..5ff1730 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -646,6 +646,7 @@ static void handle_root_bridge_insertion(acpi_handle handle) static void handle_root_bridge_removal(struct acpi_device *device) { + acpi_status status; struct acpi_eject_event *ej_event; ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL); @@ -661,7 +662,9 @@ static void handle_root_bridge_removal(struct acpi_device *device) ej_event->device = device; ej_event->event = ACPI_NOTIFY_EJECT_REQUEST; - acpi_bus_hot_remove_device(ej_event); + status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event); + if (ACPI_FAILURE(status)) + kfree(ej_event); } static void _handle_hotplug_event_root(struct work_struct *work) @@ -676,8 +679,9 @@ static void _handle_hotplug_event_root(struct work_struct *work) handle = hp_work->handle; type = hp_work->type; - root = acpi_pci_find_root(handle); + acpi_scan_lock_acquire(); + root = acpi_pci_find_root(handle); acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); switch (type) { @@ -711,6 +715,7 @@ static void _handle_hotplug_event_root(struct work_struct *work) break; } + acpi_scan_lock_release(); kfree(hp_work); /* allocated in handle_hotplug_event_bridge */ kfree(buffer.pointer); } -- cgit v1.1 From e8cd81693bbbb15db57d3c9aa7dd90eda4842874 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 26 Mar 2013 20:30:17 -0400 Subject: vt: synchronize_rcu() under spinlock is not nice... vcs_poll_data_free() calls unregister_vt_notifier(), which calls atomic_notifier_chain_unregister(), which calls synchronize_rcu(). Do it *after* we'd dropped ->f_lock. Cc: stable@vger.kernel.org (all kernels since 2.6.37) Signed-off-by: Al Viro --- drivers/tty/vt/vc_screen.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/tty/vt/vc_screen.c b/drivers/tty/vt/vc_screen.c index e4ca345..d7799de 100644 --- a/drivers/tty/vt/vc_screen.c +++ b/drivers/tty/vt/vc_screen.c @@ -93,7 +93,7 @@ vcs_poll_data_free(struct vcs_poll_data *poll) static struct vcs_poll_data * vcs_poll_data_get(struct file *file) { - struct vcs_poll_data *poll = file->private_data; + struct vcs_poll_data *poll = file->private_data, *kill = NULL; if (poll) return poll; @@ -122,10 +122,12 @@ vcs_poll_data_get(struct file *file) file->private_data = poll; } else { /* someone else raced ahead of us */ - vcs_poll_data_free(poll); + kill = poll; poll = file->private_data; } spin_unlock(&file->f_lock); + if (kill) + vcs_poll_data_free(kill); return poll; } -- cgit v1.1 From c2a2876e863356b092967ea62bebdb4dd663af80 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 26 Mar 2013 22:48:23 +0100 Subject: iommu/amd: Make sure dma_ops are set for hotplug devices There is a bug introduced with commit 27c2127 that causes devices which are hot unplugged and then hot-replugged to not have per-device dma_ops set. This causes these devices to not function correctly. Fixed with this patch. Cc: stable@vger.kernel.org Reported-by: Andreas Degert Signed-off-by: Joerg Roedel --- drivers/iommu/amd_iommu.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 98f555d..b287ca3 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2466,18 +2466,16 @@ static int device_change_notifier(struct notifier_block *nb, /* allocate a protection domain if a device is added */ dma_domain = find_protection_domain(devid); - if (dma_domain) - goto out; - dma_domain = dma_ops_domain_alloc(); - if (!dma_domain) - goto out; - dma_domain->target_dev = devid; - - spin_lock_irqsave(&iommu_pd_list_lock, flags); - list_add_tail(&dma_domain->list, &iommu_pd_list); - spin_unlock_irqrestore(&iommu_pd_list_lock, flags); - - dev_data = get_dev_data(dev); + if (!dma_domain) { + dma_domain = dma_ops_domain_alloc(); + if (!dma_domain) + goto out; + dma_domain->target_dev = devid; + + spin_lock_irqsave(&iommu_pd_list_lock, flags); + list_add_tail(&dma_domain->list, &iommu_pd_list); + spin_unlock_irqrestore(&iommu_pd_list_lock, flags); + } dev->archdata.dma_ops = &amd_iommu_dma_ops; -- cgit v1.1 From 4c43755506ececbe903585265aa8408e937620a1 Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Fri, 22 Mar 2013 18:53:57 +0100 Subject: HID: multitouch: fix touchpad buttons Commit "HID: multitouch: use the callback "report" instead..." breaks the buttons of touchpads following the HID multitouch specification. The buttons were emmitted through hid-input, but as now the events are generated only in hid-multitouch, the buttons are not emmitted anymore. The input_event() call is far much simpler than the hid-input one as many of the different tests do not apply to multitouch touchpads. Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-multitouch.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index 7a1ebb8..82e9211 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -621,6 +621,7 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, { struct mt_device *td = hid_get_drvdata(hid); __s32 quirks = td->mtclass.quirks; + struct input_dev *input = field->hidinput->input; if (hid->claimed & HID_CLAIMED_INPUT) { switch (usage->hid) { @@ -670,13 +671,16 @@ static void mt_process_mt_event(struct hid_device *hid, struct hid_field *field, break; default: + if (usage->type) + input_event(input, usage->type, usage->code, + value); return; } if (usage->usage_index + 1 == field->report_count) { /* we only take into account the last report. */ if (usage->hid == td->last_slot_field) - mt_complete_slot(td, field->hidinput->input); + mt_complete_slot(td, input); if (field->index == td->last_field_index && td->num_received >= td->num_expected) -- cgit v1.1 From 3151527ee007b73a0ebd296010f1c0454a919c7d Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 15 Mar 2013 01:45:51 -0700 Subject: userns: Don't allow creation if the user is chrooted Guarantee that the policy of which files may be access that is established by setting the root directory will not be violated by user namespaces by verifying that the root directory points to the root of the mount namespace at the time of user namespace creation. Changing the root is a privileged operation, and as a matter of policy it serves to limit unprivileged processes to files below the current root directory. For reasons of simplicity and comprehensibility the privilege to change the root directory is gated solely on the CAP_SYS_CHROOT capability in the user namespace. Therefore when creating a user namespace we must ensure that the policy of which files may be access can not be violated by changing the root directory. Anyone who runs a processes in a chroot and would like to use user namespace can setup the same view of filesystems with a mount namespace instead. With this result that this is not a practical limitation for using user namespaces. Cc: stable@vger.kernel.org Acked-by: Serge Hallyn Reported-by: Andy Lutomirski Signed-off-by: "Eric W. Biederman" --- fs/namespace.c | 24 ++++++++++++++++++++++++ include/linux/fs_struct.h | 2 ++ kernel/user_namespace.c | 9 +++++++++ 3 files changed, 35 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index 50ca17d..a3035223 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2732,6 +2732,30 @@ bool our_mnt(struct vfsmount *mnt) return check_mnt(real_mount(mnt)); } +bool current_chrooted(void) +{ + /* Does the current process have a non-standard root */ + struct path ns_root; + struct path fs_root; + bool chrooted; + + /* Find the namespace root */ + ns_root.mnt = ¤t->nsproxy->mnt_ns->root->mnt; + ns_root.dentry = ns_root.mnt->mnt_root; + path_get(&ns_root); + while (d_mountpoint(ns_root.dentry) && follow_down_one(&ns_root)) + ; + + get_fs_root(current->fs, &fs_root); + + chrooted = !path_equal(&fs_root, &ns_root); + + path_put(&fs_root); + path_put(&ns_root); + + return chrooted; +} + static void *mntns_get(struct task_struct *task) { struct mnt_namespace *ns = NULL; diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h index 729eded..2b93a9a 100644 --- a/include/linux/fs_struct.h +++ b/include/linux/fs_struct.h @@ -50,4 +50,6 @@ static inline void get_fs_root_and_pwd(struct fs_struct *fs, struct path *root, spin_unlock(&fs->lock); } +extern bool current_chrooted(void); + #endif /* _LINUX_FS_STRUCT_H */ diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index b14f4d3..0f1e428 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -61,6 +61,15 @@ int create_user_ns(struct cred *new) kgid_t group = new->egid; int ret; + /* + * Verify that we can not violate the policy of which files + * may be accessed that is specified by the root directory, + * by verifing that the root directory is at the root of the + * mount namespace which allows all files to be accessed. + */ + if (current_chrooted()) + return -EPERM; + /* The creator needs a mapping in the parent user namespace * or else we won't be able to reasonably tell userspace who * created a user_namespace. -- cgit v1.1 From 90563b198e4c6674c63672fae1923da467215f45 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 22 Mar 2013 03:10:15 -0700 Subject: vfs: Add a mount flag to lock read only bind mounts When a read-only bind mount is copied from mount namespace in a higher privileged user namespace to a mount namespace in a lesser privileged user namespace, it should not be possible to remove the the read-only restriction. Add a MNT_LOCK_READONLY mount flag to indicate that a mount must remain read-only. CC: stable@vger.kernel.org Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- fs/namespace.c | 3 +++ include/linux/mount.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index a3035223..8505b5e 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1713,6 +1713,9 @@ static int change_mount_flags(struct vfsmount *mnt, int ms_flags) if (readonly_request == __mnt_is_readonly(mnt)) return 0; + if (mnt->mnt_flags & MNT_LOCK_READONLY) + return -EPERM; + if (readonly_request) error = mnt_make_readonly(real_mount(mnt)); else diff --git a/include/linux/mount.h b/include/linux/mount.h index d7029f4..73005f9 100644 --- a/include/linux/mount.h +++ b/include/linux/mount.h @@ -47,6 +47,8 @@ struct mnt_namespace; #define MNT_INTERNAL 0x4000 +#define MNT_LOCK_READONLY 0x400000 + struct vfsmount { struct dentry *mnt_root; /* root of the mounted tree */ struct super_block *mnt_sb; /* pointer to superblock */ -- cgit v1.1 From 132c94e31b8bca8ea921f9f96a57d684fa4ae0a9 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 22 Mar 2013 04:08:05 -0700 Subject: vfs: Carefully propogate mounts across user namespaces As a matter of policy MNT_READONLY should not be changable if the original mounter had more privileges than creator of the mount namespace. Add the flag CL_UNPRIVILEGED to note when we are copying a mount from a mount namespace that requires more privileges to a mount namespace that requires fewer privileges. When the CL_UNPRIVILEGED flag is set cause clone_mnt to set MNT_NO_REMOUNT if any of the mnt flags that should never be changed are set. This protects both mount propagation and the initial creation of a less privileged mount namespace. Cc: stable@vger.kernel.org Acked-by: Serge Hallyn Reported-by: Andy Lutomirski Signed-off-by: "Eric W. Biederman" --- fs/namespace.c | 6 +++++- fs/pnode.c | 6 ++++++ fs/pnode.h | 1 + 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/fs/namespace.c b/fs/namespace.c index 8505b5e..968d4c5 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -798,6 +798,10 @@ static struct mount *clone_mnt(struct mount *old, struct dentry *root, } mnt->mnt.mnt_flags = old->mnt.mnt_flags & ~MNT_WRITE_HOLD; + /* Don't allow unprivileged users to change mount flags */ + if ((flag & CL_UNPRIVILEGED) && (mnt->mnt.mnt_flags & MNT_READONLY)) + mnt->mnt.mnt_flags |= MNT_LOCK_READONLY; + atomic_inc(&sb->s_active); mnt->mnt.mnt_sb = sb; mnt->mnt.mnt_root = dget(root); @@ -2342,7 +2346,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns, /* First pass: copy the tree topology */ copy_flags = CL_COPY_ALL | CL_EXPIRE; if (user_ns != mnt_ns->user_ns) - copy_flags |= CL_SHARED_TO_SLAVE; + copy_flags |= CL_SHARED_TO_SLAVE | CL_UNPRIVILEGED; new = copy_tree(old, old->mnt.mnt_root, copy_flags); if (IS_ERR(new)) { up_write(&namespace_sem); diff --git a/fs/pnode.c b/fs/pnode.c index 3e000a5..8b29d21 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -9,6 +9,7 @@ #include #include #include +#include #include "internal.h" #include "pnode.h" @@ -220,6 +221,7 @@ static struct mount *get_source(struct mount *dest, int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry, struct mount *source_mnt, struct list_head *tree_list) { + struct user_namespace *user_ns = current->nsproxy->mnt_ns->user_ns; struct mount *m, *child; int ret = 0; struct mount *prev_dest_mnt = dest_mnt; @@ -237,6 +239,10 @@ int propagate_mnt(struct mount *dest_mnt, struct dentry *dest_dentry, source = get_source(m, prev_dest_mnt, prev_src_mnt, &type); + /* Notice when we are propagating across user namespaces */ + if (m->mnt_ns->user_ns != user_ns) + type |= CL_UNPRIVILEGED; + child = copy_tree(source, source->mnt.mnt_root, type); if (IS_ERR(child)) { ret = PTR_ERR(child); diff --git a/fs/pnode.h b/fs/pnode.h index 19b853a3..a0493d5 100644 --- a/fs/pnode.h +++ b/fs/pnode.h @@ -23,6 +23,7 @@ #define CL_MAKE_SHARED 0x08 #define CL_PRIVATE 0x10 #define CL_SHARED_TO_SLAVE 0x20 +#define CL_UNPRIVILEGED 0x40 static inline void set_mnt_shared(struct mount *mnt) { -- cgit v1.1 From a636b702ed1805e988ad3d8ff8b52c060f8b341c Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Thu, 21 Mar 2013 18:13:15 -0700 Subject: ipc: Restrict mounting the mqueue filesystem Only allow mounting the mqueue filesystem if the caller has CAP_SYS_ADMIN rights over the ipc namespace. The principle here is if you create or have capabilities over it you can mount it, otherwise you get to live with what other people have mounted. This information is not particularly sensitive and mqueue essentially only reports which posix messages queues exist. Still when creating a restricted environment for an application to live any extra information may be of use to someone with sufficient creativity. The historical if imperfect way this information has been restricted has been not to allow mounts and restricting this to ipc namespace creators maintains the spirit of the historical restriction. Cc: stable@vger.kernel.org Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- ipc/mqueue.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/ipc/mqueue.c b/ipc/mqueue.c index e5c4f60..c4ae32e 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -330,8 +330,16 @@ static struct dentry *mqueue_mount(struct file_system_type *fs_type, int flags, const char *dev_name, void *data) { - if (!(flags & MS_KERNMOUNT)) - data = current->nsproxy->ipc_ns; + if (!(flags & MS_KERNMOUNT)) { + struct ipc_namespace *ns = current->nsproxy->ipc_ns; + /* Don't allow mounting unless the caller has CAP_SYS_ADMIN + * over the ipc namespace. + */ + if (!ns_capable(ns->user_ns, CAP_SYS_ADMIN)) + return ERR_PTR(-EPERM); + + data = ns; + } return mount_ns(fs_type, flags, data, mqueue_fill_super); } -- cgit v1.1 From 87a8ebd637dafc255070f503909a053cf0d98d3f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sun, 24 Mar 2013 14:28:27 -0700 Subject: userns: Restrict when proc and sysfs can be mounted Only allow unprivileged mounts of proc and sysfs if they are already mounted when the user namespace is created. proc and sysfs are interesting because they have content that is per namespace, and so fresh mounts are needed when new namespaces are created while at the same time proc and sysfs have content that is shared between every instance. Respect the policy of who may see the shared content of proc and sysfs by only allowing new mounts if there was an existing mount at the time the user namespace was created. In practice there are only two interesting cases: proc and sysfs are mounted at their usual places, proc and sysfs are not mounted at all (some form of mount namespace jail). Cc: stable@vger.kernel.org Acked-by: Serge Hallyn Signed-off-by: "Eric W. Biederman" --- fs/namespace.c | 21 +++++++++++++++++++++ fs/proc/root.c | 4 ++++ fs/sysfs/mount.c | 4 ++++ include/linux/user_namespace.h | 4 ++++ kernel/user.c | 2 ++ kernel/user_namespace.c | 2 ++ 6 files changed, 37 insertions(+) diff --git a/fs/namespace.c b/fs/namespace.c index 968d4c5..d581e45 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2763,6 +2763,27 @@ bool current_chrooted(void) return chrooted; } +void update_mnt_policy(struct user_namespace *userns) +{ + struct mnt_namespace *ns = current->nsproxy->mnt_ns; + struct mount *mnt; + + down_read(&namespace_sem); + list_for_each_entry(mnt, &ns->list, mnt_list) { + switch (mnt->mnt.mnt_sb->s_magic) { + case SYSFS_MAGIC: + userns->may_mount_sysfs = true; + break; + case PROC_SUPER_MAGIC: + userns->may_mount_proc = true; + break; + } + if (userns->may_mount_sysfs && userns->may_mount_proc) + break; + } + up_read(&namespace_sem); +} + static void *mntns_get(struct task_struct *task) { struct mnt_namespace *ns = NULL; diff --git a/fs/proc/root.c b/fs/proc/root.c index c6e9fac..9c7fab1 100644 --- a/fs/proc/root.c +++ b/fs/proc/root.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -108,6 +109,9 @@ static struct dentry *proc_mount(struct file_system_type *fs_type, } else { ns = task_active_pid_ns(current); options = data; + + if (!current_user_ns()->may_mount_proc) + return ERR_PTR(-EPERM); } sb = sget(fs_type, proc_test_super, proc_set_super, flags, ns); diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c index 8d924b5..afd8327 100644 --- a/fs/sysfs/mount.c +++ b/fs/sysfs/mount.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "sysfs.h" @@ -111,6 +112,9 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type, struct super_block *sb; int error; + if (!(flags & MS_KERNMOUNT) && !current_user_ns()->may_mount_sysfs) + return ERR_PTR(-EPERM); + info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) return ERR_PTR(-ENOMEM); diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h index 4ce0093..b6b215f 100644 --- a/include/linux/user_namespace.h +++ b/include/linux/user_namespace.h @@ -26,6 +26,8 @@ struct user_namespace { kuid_t owner; kgid_t group; unsigned int proc_inum; + bool may_mount_sysfs; + bool may_mount_proc; }; extern struct user_namespace init_user_ns; @@ -82,4 +84,6 @@ static inline void put_user_ns(struct user_namespace *ns) #endif +void update_mnt_policy(struct user_namespace *userns); + #endif /* _LINUX_USER_H */ diff --git a/kernel/user.c b/kernel/user.c index e81978e..8e635a1 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -51,6 +51,8 @@ struct user_namespace init_user_ns = { .owner = GLOBAL_ROOT_UID, .group = GLOBAL_ROOT_GID, .proc_inum = PROC_USER_INIT_INO, + .may_mount_sysfs = true, + .may_mount_proc = true, }; EXPORT_SYMBOL_GPL(init_user_ns); diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c index 0f1e428..a54f26f 100644 --- a/kernel/user_namespace.c +++ b/kernel/user_namespace.c @@ -96,6 +96,8 @@ int create_user_ns(struct cred *new) set_cred_user_ns(new, ns); + update_mnt_policy(ns); + return 0; } -- cgit v1.1 From c8fa48d3722a9be89acf3486444e87583379c97c Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Tue, 26 Mar 2013 18:36:01 +0100 Subject: usb: Fix compile error by selecting USB_OTG_UTILS The current lpc32xx_defconfig breaks like this, caused by recent phy restructuring: LD init/built-in.o drivers/built-in.o: In function `usb_hcd_nxp_probe': drivers/usb/host/ohci-nxp.c:224: undefined reference to `isp1301_get_client' drivers/built-in.o: In function `lpc32xx_udc_probe': drivers/usb/gadget/lpc32xx_udc.c:3104: undefined reference to `isp1301_get_client' distcc[27867] ERROR: compile (null) on localhost failed make: *** [vmlinux] Error 1 Caused by 1c2088812f095df77f4b3224b65db79d7111a300 (usb: Makefile: fix drivers/usb/phy/ Makefile entry) This patch fixes this by selecting USB_OTG_UTILS in Kconfig which causes the phy driver to be built again. Signed-off-by: Roland Stigge Acked-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/Kconfig | 1 + drivers/usb/phy/Kconfig | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 5a0c541..c7525b1 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -145,6 +145,7 @@ config USB_LPC32XX tristate "LPC32XX USB Peripheral Controller" depends on ARCH_LPC32XX select USB_ISP1301 + select USB_OTG_UTILS help This option selects the USB device controller in the LPC32xx SoC. diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 65217a5..9054938 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -38,6 +38,7 @@ config USB_ISP1301 tristate "NXP ISP1301 USB transceiver support" depends on USB || USB_GADGET depends on I2C + select USB_OTG_UTILS help Say Y here to add support for the NXP ISP1301 USB transceiver driver. This chip is typically used as USB transceiver for USB host, gadget -- cgit v1.1 From 76fc253723add627cf28c09c79fb67e71f9e4782 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 22 Mar 2013 10:15:47 -0400 Subject: xen/acpi-stub: Disable it b/c the acpi_processor_add is no longer called. With the Xen ACPI stub code (CONFIG_XEN_STUB=y) enabled, the power C and P states are no longer uploaded to the hypervisor. The reason is that the Xen CPU hotplug code: xen-acpi-cpuhotplug.c and the xen-acpi-stub.c register themselves as the "processor" type object. That means the generic processor (processor_driver.c) stops working and it does not call (acpi_processor_add) which populates the per_cpu(processors, pr->id) = pr; structure. The 'pr' is gathered from the acpi_processor_get_info function which does the job of finding the C-states and figuring out PBLK address. The 'processors->pr' is then later used by xen-acpi-processor.c (the one that uploads C and P states to the hypervisor). Since it is NULL, we end skip the gathering of _PSD, _PSS, _PCT, etc and never upload the power management data. The end result is that enabling the CONFIG_XEN_STUB in the build means that xen-acpi-processor is not working anymore. This temporary patch fixes it by marking the XEN_STUB driver as BROKEN until this can be properly fixed. CC: jinsong.liu@intel.com Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 5a32232..67af155 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -182,7 +182,7 @@ config XEN_PRIVCMD config XEN_STUB bool "Xen stub drivers" - depends on XEN && X86_64 + depends on XEN && X86_64 && BROKEN default n help Allow kernel to install stub drivers, to reserve space for Xen drivers, -- cgit v1.1 From d3eb2c89e7ba996e8781b22a6e7d0a895ef55630 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 22 Mar 2013 10:34:28 -0400 Subject: xen/mmu: Move the setting of pvops.write_cr3 to later phase in bootup. We move the setting of write_cr3 from the early bootup variant (see git commit 0cc9129d75ef8993702d97ab0e49542c15ac6ab9 "x86-64, xen, mmu: Provide an early version of write_cr3.") to a more appropiate location. This new location sets all of the other non-early variants of pvops calls - and most importantly is before the alternative_asm mechanism kicks in. Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/mmu.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index e8e3493..6afbb2c 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1467,8 +1467,6 @@ static void __init xen_write_cr3_init(unsigned long cr3) __xen_write_cr3(true, cr3); xen_mc_issue(PARAVIRT_LAZY_CPU); /* interrupts restored */ - - pv_mmu_ops.write_cr3 = &xen_write_cr3; } #endif @@ -2122,6 +2120,7 @@ static void __init xen_post_allocator_init(void) #endif #ifdef CONFIG_X86_64 + pv_mmu_ops.write_cr3 = &xen_write_cr3; SetPagePinned(virt_to_page(level3_user_vsyscall)); #endif xen_mark_init_mm_pinned(); -- cgit v1.1 From c26377e62f4e6bfb4d99ef88526047209701a83f Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Mon, 25 Mar 2013 14:11:19 +0000 Subject: xen/events: avoid race with raising an event in unmask_evtchn() In unmask_evtchn(), when the mask bit is cleared after testing for pending and the event becomes pending between the test and clear, then the upcall will not become pending and the event may be lost or delayed. Avoid this by always clearing the mask bit before checking for pending. If a hypercall is needed, remask the event as EVTCHNOP_unmask will only retrigger pending events if they were masked. This fixes a regression introduced in 3.7 by b5e579232d635b79a3da052964cb357ccda8d9ea (xen/events: fix unmask_evtchn for PV on HVM guests) which reordered the clear mask and check pending operations. Changes in v2: - set mask before hypercall. Cc: stable@vger.kernel.org Acked-by: Stefano Stabellini Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/events.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/xen/events.c b/drivers/xen/events.c index d17aa41..aa85881 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -403,11 +403,23 @@ static void unmask_evtchn(int port) if (unlikely((cpu != cpu_from_evtchn(port)))) do_hypercall = 1; - else + else { + /* + * Need to clear the mask before checking pending to + * avoid a race with an event becoming pending. + * + * EVTCHNOP_unmask will only trigger an upcall if the + * mask bit was set, so if a hypercall is needed + * remask the event. + */ + sync_clear_bit(port, BM(&s->evtchn_mask[0])); evtchn_pending = sync_test_bit(port, BM(&s->evtchn_pending[0])); - if (unlikely(evtchn_pending && xen_hvm_domain())) - do_hypercall = 1; + if (unlikely(evtchn_pending && xen_hvm_domain())) { + sync_set_bit(port, BM(&s->evtchn_mask[0])); + do_hypercall = 1; + } + } /* Slow path (hypercall) if this is a non-local port or if this is * an hvm domain and an event is pending (hvm domains don't have @@ -418,8 +430,6 @@ static void unmask_evtchn(int port) } else { struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu); - sync_clear_bit(port, BM(&s->evtchn_mask[0])); - /* * The following is basically the equivalent of * 'hw_resend_irq'. Just like a real IO-APIC we 'lose -- cgit v1.1 From 3e84f48edfd33b2e209a117c11fb9ce637cc9b67 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Wed, 27 Mar 2013 15:20:30 +0000 Subject: vfs/splice: Fix missed checks in new __kernel_write() helper Commit 06ae43f34bcc ("Don't bother with redoing rw_verify_area() from default_file_splice_from()") lost the checks to test existence of the write/aio_write methods. My apologies ;-/ Eventually, we want that in fs/splice.c side of things (no point repeating it for every buffer, after all), but for now this is the obvious minimal fix. Reported-by: Dave Jones Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- fs/read_write.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/fs/read_write.c b/fs/read_write.c index f7b5a23..e6ddc8d 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -424,6 +424,9 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t const char __user *p; ssize_t ret; + if (!file->f_op || (!file->f_op->write && !file->f_op->aio_write)) + return -EINVAL; + old_fs = get_fs(); set_fs(get_ds()); p = (__force const char __user *)buf; -- cgit v1.1 From adaa4b8e4d47eeb114513c2f7a172929154b94bd Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Thu, 21 Mar 2013 14:30:23 +0000 Subject: Btrfs: fix EIO from btrfs send in is_extent_unchanged for punched holes When you take a snapshot, punch a hole where there has been data, then take another snapshot and try to send an incremental stream, btrfs send would give you EIO. That is because is_extent_unchanged had no support for holes being punched. With this patch, instead of returning EIO we just return 0 (== the extent is not unchanged) and we're good. Signed-off-by: Jan Schmidt Cc: Alexander Block Signed-off-by: Josef Bacik --- fs/btrfs/send.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index 68da757..ed897dc 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -3945,12 +3945,10 @@ static int is_extent_unchanged(struct send_ctx *sctx, found_key.type != key.type) { key.offset += right_len; break; - } else { - if (found_key.offset != key.offset + right_len) { - /* Should really not happen */ - ret = -EIO; - goto out; - } + } + if (found_key.offset != key.offset + right_len) { + ret = 0; + goto out; } key = found_key; } -- cgit v1.1 From f4881bc7a83eff263789dd524b7c269d138d4af5 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Mon, 25 Mar 2013 16:03:35 -0400 Subject: Btrfs: fix space leak when we fail to reserve metadata space Dave reported a warning when running xfstest 275. We have been leaking delalloc metadata space when our reservations fail. This is because we were improperly calculating how much space to free for our checksum reservations. The problem is we would sometimes free up space that had already been freed in another thread and we would end up with negative usage for the delalloc space. This patch fixes the problem by calculating how much space the other threads would have already freed, and then calculate how much space we need to free had we not done the reservation at all, and then freeing any excess space. This makes xfstests 275 no longer have leaked space. Thanks Cc: stable@vger.kernel.org Reported-by: David Sterba Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 47 +++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 41 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index a8ff25a..a22b5cc 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4815,14 +4815,49 @@ out_fail: * If the inodes csum_bytes is the same as the original * csum_bytes then we know we haven't raced with any free()ers * so we can just reduce our inodes csum bytes and carry on. - * Otherwise we have to do the normal free thing to account for - * the case that the free side didn't free up its reserve - * because of this outstanding reservation. */ - if (BTRFS_I(inode)->csum_bytes == csum_bytes) + if (BTRFS_I(inode)->csum_bytes == csum_bytes) { calc_csum_metadata_size(inode, num_bytes, 0); - else - to_free = calc_csum_metadata_size(inode, num_bytes, 0); + } else { + u64 orig_csum_bytes = BTRFS_I(inode)->csum_bytes; + u64 bytes; + + /* + * This is tricky, but first we need to figure out how much we + * free'd from any free-ers that occured during this + * reservation, so we reset ->csum_bytes to the csum_bytes + * before we dropped our lock, and then call the free for the + * number of bytes that were freed while we were trying our + * reservation. + */ + bytes = csum_bytes - BTRFS_I(inode)->csum_bytes; + BTRFS_I(inode)->csum_bytes = csum_bytes; + to_free = calc_csum_metadata_size(inode, bytes, 0); + + + /* + * Now we need to see how much we would have freed had we not + * been making this reservation and our ->csum_bytes were not + * artificially inflated. + */ + BTRFS_I(inode)->csum_bytes = csum_bytes - num_bytes; + bytes = csum_bytes - orig_csum_bytes; + bytes = calc_csum_metadata_size(inode, bytes, 0); + + /* + * Now reset ->csum_bytes to what it should be. If bytes is + * more than to_free then we would have free'd more space had we + * not had an artificially high ->csum_bytes, so we need to free + * the remainder. If bytes is the same or less then we don't + * need to do anything, the other free-ers did the correct + * thing. + */ + BTRFS_I(inode)->csum_bytes = orig_csum_bytes - num_bytes; + if (bytes > to_free) + to_free = bytes - to_free; + else + to_free = 0; + } spin_unlock(&BTRFS_I(inode)->lock); if (dropped) to_free += btrfs_calc_trans_metadata_size(root, dropped); -- cgit v1.1 From 6e137ed3f30574f314733d4b7a86ea6523232b14 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Tue, 26 Mar 2013 15:26:55 -0400 Subject: Btrfs: fix space accounting for unlink and rename We are way over-reserving for unlink and rename. Rename is just some random huge number and unlink accounts for tree log operations that don't actually happen during unlink, not to mention the tree log doesn't take from the trans block rsv anyway so it's completely useless. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/inode.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 6a6e13c..8cab424 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -3693,11 +3693,9 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir, * 1 for the dir item * 1 for the dir index * 1 for the inode ref - * 1 for the inode ref in the tree log - * 2 for the dir entries in the log * 1 for the inode */ - trans = btrfs_start_transaction(root, 8); + trans = btrfs_start_transaction(root, 5); if (!IS_ERR(trans) || PTR_ERR(trans) != -ENOSPC) return trans; @@ -8141,7 +8139,7 @@ static int btrfs_rename(struct inode *old_dir, struct dentry *old_dentry, * inodes. So 5 * 2 is 10, plus 1 for the new link, so 11 total items * should cover the worst case number of items we'll modify. */ - trans = btrfs_start_transaction(root, 20); + trans = btrfs_start_transaction(root, 11); if (IS_ERR(trans)) { ret = PTR_ERR(trans); goto out_notrans; -- cgit v1.1 From db1d607d3ca5cbb283cbb17d648cd7e8dc67cc7b Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Tue, 26 Mar 2013 15:29:11 -0400 Subject: Btrfs: hold the ordered operations mutex when waiting on ordered extents We need to hold the ordered_operations mutex while waiting on ordered extents since we splice and run the ordered extents list. We need to make sure anybody else who wants to wait on ordered extents does actually wait for them to be completed. This will keep us from bailing out of flushing in case somebody is already waiting on ordered extents to complete. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/ordered-data.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index dc08d77..005c45d 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -557,6 +557,7 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root, int delay_iput) INIT_LIST_HEAD(&splice); INIT_LIST_HEAD(&works); + mutex_lock(&root->fs_info->ordered_operations_mutex); spin_lock(&root->fs_info->ordered_extent_lock); list_splice_init(&root->fs_info->ordered_extents, &splice); while (!list_empty(&splice)) { @@ -600,6 +601,7 @@ void btrfs_wait_ordered_extents(struct btrfs_root *root, int delay_iput) cond_resched(); } + mutex_unlock(&root->fs_info->ordered_operations_mutex); } /* -- cgit v1.1 From fdf30d1c1b386e1b73116cc7e0fb14e962b763b0 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Tue, 26 Mar 2013 15:31:45 -0400 Subject: Btrfs: limit the global reserve to 512mb A user reported a problem where he was getting early ENOSPC with hundreds of gigs of free data space and 6 gigs of free metadata space. This is because the global block reserve was taking up the entire free metadata space. This is ridiculous, we have infrastructure in place to throttle if we start using too much of the global reserve, so instead of letting it get this huge just limit it to 512mb so that users can still get work done. This allowed the user to complete his rsync without issues. Thanks Cc: stable@vger.kernel.org Reported-and-tested-by: Stefan Priebe Signed-off-by: Josef Bacik --- fs/btrfs/extent-tree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index a22b5cc..0d84787 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4460,7 +4460,7 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) spin_lock(&sinfo->lock); spin_lock(&block_rsv->lock); - block_rsv->size = num_bytes; + block_rsv->size = min_t(u64, num_bytes, 512 * 1024 * 1024); num_bytes = sinfo->bytes_used + sinfo->bytes_pinned + sinfo->bytes_reserved + sinfo->bytes_readonly + -- cgit v1.1 From a7975026ff9ddf91ba190ae2b71699dd156395e3 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Mon, 25 Mar 2013 11:08:23 +0000 Subject: Btrfs: fix double free in the btrfs_qgroup_account_ref() The function btrfs_find_all_roots is responsible to allocate memory for 'roots' and free it if errors happen,so the caller should not free it again since the work has been done. Besides,'tmp' is allocated after the function btrfs_find_all_roots, so we can return directly if btrfs_find_all_roots() fails. Signed-off-by: Wang Shilong Reviewed-by: Miao Xie Reviewed-by: Jan Schmidt Signed-off-by: Josef Bacik --- fs/btrfs/qgroup.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 5471e47..b44124d 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1153,7 +1153,7 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, ret = btrfs_find_all_roots(trans, fs_info, node->bytenr, sgn > 0 ? node->seq - 1 : node->seq, &roots); if (ret < 0) - goto out; + return ret; spin_lock(&fs_info->qgroup_lock); quota_root = fs_info->quota_root; @@ -1275,7 +1275,6 @@ int btrfs_qgroup_account_ref(struct btrfs_trans_handle *trans, ret = 0; unlock: spin_unlock(&fs_info->qgroup_lock); -out: ulist_free(roots); ulist_free(tmp); -- cgit v1.1 From 39847c4d3d91f487f9ab3d083ee5d0f8419f105c Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 28 Mar 2013 08:08:20 +0000 Subject: Btrfs: fix wrong reservation of csums We reserve the space for csums only when we write data into a file, in the other cases, such as tree log, log replay, we don't do reservation, so we can use the reservation of the transaction handle just for the former. And for the latter, we should use the tree's own reservation. But the function - btrfs_csum_file_blocks() didn't differentiate between these two types of the cases, fix it. Signed-off-by: Miao Xie Signed-off-by: Josef Bacik --- fs/btrfs/file-item.c | 2 -- fs/btrfs/inode.c | 2 ++ 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index ec16020..b7e529d 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -728,7 +728,6 @@ int btrfs_csum_file_blocks(struct btrfs_trans_handle *trans, return -ENOMEM; sector_sum = sums->sums; - trans->adding_csums = 1; again: next_offset = (u64)-1; found_next = 0; @@ -899,7 +898,6 @@ next_sector: goto again; } out: - trans->adding_csums = 0; btrfs_free_path(path); return ret; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 8cab424..b883815 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1757,8 +1757,10 @@ static noinline int add_pending_csums(struct btrfs_trans_handle *trans, struct btrfs_ordered_sum *sum; list_for_each_entry(sum, list, list) { + trans->adding_csums = 1; btrfs_csum_file_blocks(trans, BTRFS_I(inode)->root->fs_info->csum_root, sum); + trans->adding_csums = 0; } return 0; } -- cgit v1.1 From 82d130ff390be67d980d8b6f39e921c0b1d8d8e0 Mon Sep 17 00:00:00 2001 From: Miao Xie Date: Thu, 28 Mar 2013 08:12:15 +0000 Subject: Btrfs: fix wrong return value of btrfs_lookup_csum() If we don't find the expected csum item, but find a csum item which is adjacent to the specified extent, we should return -EFBIG, or we should return -ENOENT. But btrfs_lookup_csum() return -EFBIG even the csum item is not adjacent to the specified extent. Fix it. Signed-off-by: Miao Xie Signed-off-by: Josef Bacik --- fs/btrfs/file-item.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index b7e529d..c4628a2 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -118,9 +118,11 @@ struct btrfs_csum_item *btrfs_lookup_csum(struct btrfs_trans_handle *trans, csums_in_item = btrfs_item_size_nr(leaf, path->slots[0]); csums_in_item /= csum_size; - if (csum_offset >= csums_in_item) { + if (csum_offset == csums_in_item) { ret = -EFBIG; goto fail; + } else if (csum_offset > csums_in_item) { + goto fail; } } item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_csum_item); -- cgit v1.1 From c613c5f686b5493290aeb6a3c4b3b2371a8582cf Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Thu, 28 Mar 2013 09:43:43 -0600 Subject: mg_disk: fix error return code in mg_probe() Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Reviewed-by: Jingoo Han Signed-off-by: Jens Axboe --- drivers/block/mg_disk.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/block/mg_disk.c b/drivers/block/mg_disk.c index 1788f491..076ae7f 100644 --- a/drivers/block/mg_disk.c +++ b/drivers/block/mg_disk.c @@ -890,8 +890,10 @@ static int mg_probe(struct platform_device *plat_dev) gpio_direction_output(host->rst, 1); /* reset out pin */ - if (!(prv_data->dev_attr & MG_DEV_MASK)) + if (!(prv_data->dev_attr & MG_DEV_MASK)) { + err = -EINVAL; goto probe_err_3a; + } if (prv_data->dev_attr != MG_BOOT_DEV) { rsc = platform_get_resource_byname(plat_dev, IORESOURCE_IO, -- cgit v1.1 From 482b0b5d82bd916cc0c55a2abf65bdc69023b843 Mon Sep 17 00:00:00 2001 From: Konstantin Holoborodko Date: Fri, 29 Mar 2013 00:06:13 +0900 Subject: usb: ftdi_sio: Add support for Mitsubishi FX-USB-AW/-BD It enhances the driver for FTDI-based USB serial adapters to recognize Mitsubishi Electric Corp. USB/RS422 Converters as FT232BM chips and support them. https://search.meau.com/?q=FX-USB-AW Signed-off-by: Konstantin Holoborodko Tested-by: Konstantin Holoborodko Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index d4809d5..9886180 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -640,6 +640,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, { USB_DEVICE(ACTON_VID, ACTON_SPECTRAPRO_PID) }, { USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) }, + { USB_DEVICE(MITSUBISHI_VID, MITSUBISHI_FXUSB_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 9d359e1..e79861e 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -584,6 +584,13 @@ #define CONTEC_COM1USBH_PID 0x8311 /* COM-1(USB)H */ /* + * Mitsubishi Electric Corp. (http://www.meau.com) + * Submitted by Konstantin Holoborodko + */ +#define MITSUBISHI_VID 0x06D3 +#define MITSUBISHI_FXUSB_PID 0x0284 /* USB/RS422 converters: FX-USB-AW/-BD */ + +/* * Definitions for B&B Electronics products. */ #define BANDB_VID 0x0856 /* B&B Electronics Vendor ID */ -- cgit v1.1 From 09a9f1d27892255cfb9c91203f19476765e2d8d1 Mon Sep 17 00:00:00 2001 From: Michel Lespinasse Date: Thu, 28 Mar 2013 16:26:23 -0700 Subject: Revert "mm: introduce VM_POPULATE flag to better deal with racy userspace programs" This reverts commit 186930500985 ("mm: introduce VM_POPULATE flag to better deal with racy userspace programs"). VM_POPULATE only has any effect when userspace plays racy games with vmas by trying to unmap and remap memory regions that mmap or mlock are operating on. Also, the only effect of VM_POPULATE when userspace plays such games is that it avoids populating new memory regions that get remapped into the address range that was being operated on by the original mmap or mlock calls. Let's remove VM_POPULATE as there isn't any strong argument to mandate a new vm_flag. Signed-off-by: Michel Lespinasse Signed-off-by: Hugh Dickins Signed-off-by: Linus Torvalds --- include/linux/mm.h | 1 - include/linux/mman.h | 4 +--- mm/fremap.c | 12 ++---------- mm/mlock.c | 11 +++++------ mm/mmap.c | 4 +++- 5 files changed, 11 insertions(+), 21 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 7acc9dc..e19ff30 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -87,7 +87,6 @@ extern unsigned int kobjsize(const void *objp); #define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ #define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */ -#define VM_POPULATE 0x00001000 #define VM_LOCKED 0x00002000 #define VM_IO 0x00004000 /* Memory mapped I/O or similar */ diff --git a/include/linux/mman.h b/include/linux/mman.h index 61c7a87..9aa863d 100644 --- a/include/linux/mman.h +++ b/include/linux/mman.h @@ -79,8 +79,6 @@ calc_vm_flag_bits(unsigned long flags) { return _calc_vm_trans(flags, MAP_GROWSDOWN, VM_GROWSDOWN ) | _calc_vm_trans(flags, MAP_DENYWRITE, VM_DENYWRITE ) | - ((flags & MAP_LOCKED) ? (VM_LOCKED | VM_POPULATE) : 0) | - (((flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE) ? - VM_POPULATE : 0); + _calc_vm_trans(flags, MAP_LOCKED, VM_LOCKED ); } #endif /* _LINUX_MMAN_H */ diff --git a/mm/fremap.c b/mm/fremap.c index 4723ac8..87da359 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -204,10 +204,8 @@ get_write_lock: unsigned long addr; struct file *file = get_file(vma->vm_file); - vm_flags = vma->vm_flags; - if (!(flags & MAP_NONBLOCK)) - vm_flags |= VM_POPULATE; - addr = mmap_region(file, start, size, vm_flags, pgoff); + addr = mmap_region(file, start, size, + vma->vm_flags, pgoff); fput(file); if (IS_ERR_VALUE(addr)) { err = addr; @@ -226,12 +224,6 @@ get_write_lock: mutex_unlock(&mapping->i_mmap_mutex); } - if (!(flags & MAP_NONBLOCK) && !(vma->vm_flags & VM_POPULATE)) { - if (!has_write_lock) - goto get_write_lock; - vma->vm_flags |= VM_POPULATE; - } - if (vma->vm_flags & VM_LOCKED) { /* * drop PG_Mlocked flag for over-mapped range diff --git a/mm/mlock.c b/mm/mlock.c index 1c5e33f..79b7cf7 100644 --- a/mm/mlock.c +++ b/mm/mlock.c @@ -358,7 +358,7 @@ static int do_mlock(unsigned long start, size_t len, int on) newflags = vma->vm_flags & ~VM_LOCKED; if (on) - newflags |= VM_LOCKED | VM_POPULATE; + newflags |= VM_LOCKED; tmp = vma->vm_end; if (tmp > end) @@ -418,8 +418,7 @@ int __mm_populate(unsigned long start, unsigned long len, int ignore_errors) * range with the first VMA. Also, skip undesirable VMA types. */ nend = min(end, vma->vm_end); - if ((vma->vm_flags & (VM_IO | VM_PFNMAP | VM_POPULATE)) != - VM_POPULATE) + if (vma->vm_flags & (VM_IO | VM_PFNMAP)) continue; if (nstart < vma->vm_start) nstart = vma->vm_start; @@ -492,9 +491,9 @@ static int do_mlockall(int flags) struct vm_area_struct * vma, * prev = NULL; if (flags & MCL_FUTURE) - current->mm->def_flags |= VM_LOCKED | VM_POPULATE; + current->mm->def_flags |= VM_LOCKED; else - current->mm->def_flags &= ~(VM_LOCKED | VM_POPULATE); + current->mm->def_flags &= ~VM_LOCKED; if (flags == MCL_FUTURE) goto out; @@ -503,7 +502,7 @@ static int do_mlockall(int flags) newflags = vma->vm_flags & ~VM_LOCKED; if (flags & MCL_CURRENT) - newflags |= VM_LOCKED | VM_POPULATE; + newflags |= VM_LOCKED; /* Ignore errors */ mlock_fixup(vma, &prev, vma->vm_start, vma->vm_end, newflags); diff --git a/mm/mmap.c b/mm/mmap.c index 2664a47..6466699 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -1306,7 +1306,9 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, } addr = mmap_region(file, addr, len, vm_flags, pgoff); - if (!IS_ERR_VALUE(addr) && (vm_flags & VM_POPULATE)) + if (!IS_ERR_VALUE(addr) && + ((vm_flags & VM_LOCKED) || + (flags & (MAP_POPULATE | MAP_NONBLOCK)) == MAP_POPULATE)) *populate = len; return addr; } -- cgit v1.1 From 5dade71050e799d8679698a6145e2ba46cdeac2a Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 27 Mar 2013 17:23:41 -0700 Subject: tcm_vhost: Avoid VIRTIO_RING_F_EVENT_IDX feature bit This patch adds a VHOST_SCSI_FEATURES mask minus VIRTIO_RING_F_EVENT_IDX so that vhost-scsi-pci userspace will strip this feature bit once GET_FEATURES reports it as being unsupported on the host. This is to avoid a bug where ->handle_kicks() are missed when EVENT_IDX is enabled by default in userspace code. (mst: Rename to VHOST_SCSI_FEATURES + add comment) Acked-by: Michael S. Tsirkin Reviewed-by: Asias He Cc: Paolo Bonzini Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 43fb11e..2968b49 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -60,6 +60,15 @@ enum { VHOST_SCSI_VQ_IO = 2, }; +/* + * VIRTIO_RING_F_EVENT_IDX seems broken. Not sure the bug is in + * kernel but disabling it helps. + * TODO: debug and remove the workaround. + */ +enum { + VHOST_SCSI_FEATURES = VHOST_FEATURES & (~VIRTIO_RING_F_EVENT_IDX) +}; + #define VHOST_SCSI_MAX_TARGET 256 #define VHOST_SCSI_MAX_VQ 128 @@ -946,7 +955,7 @@ static void vhost_scsi_flush(struct vhost_scsi *vs) static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features) { - if (features & ~VHOST_FEATURES) + if (features & ~VHOST_SCSI_FEATURES) return -EOPNOTSUPP; mutex_lock(&vs->dev.mutex); @@ -992,7 +1001,7 @@ static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl, return -EFAULT; return 0; case VHOST_GET_FEATURES: - features = VHOST_FEATURES; + features = VHOST_SCSI_FEATURES; if (copy_to_user(featurep, &features, sizeof features)) return -EFAULT; return 0; -- cgit v1.1 From f85eda8d75d37a3796cee7f5a906e50e3f13d9e1 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 28 Mar 2013 23:06:00 -0700 Subject: target: Fix RESERVATION_CONFLICT status regression for iscsi-target special case This patch fixes a regression introduced in v3.8-rc1 code where a failed target_check_reservation() check in target_setup_cmd_from_cdb() was causing an incorrect SAM_STAT_GOOD status to be returned during a WRITE operation performed by an unregistered / unreserved iscsi initiator port. This regression is only effecting iscsi-target due to a special case check for TCM_RESERVATION_CONFLICT within iscsi_target_erl1.c:iscsit_execute_cmd(), and was still correctly disallowing WRITE commands from backend submission for unregistered / unreserved initiator ports, while returning the incorrect SAM_STAT_GOOD status due to the missing SAM_STAT_RESERVATION_CONFLICT assignment. This regression was first introduced with: commit de103c93aff0bed0ae984274e5dc8b95899badab Author: Christoph Hellwig Date: Tue Nov 6 12:24:09 2012 -0800 target: pass sense_reason as a return value Go ahead and re-add the missing SAM_STAT_RESERVATION_CONFLICT assignment during a target_check_reservation() failure, so that iscsi-target code sends the correct SCSI status. All other fabrics using target_submit_cmd_*() with a RESERVATION_CONFLICT call to transport_generic_request_failure() are not effected by this bug. Reported-by: Jeff Leung Cc: Christoph Hellwig Cc: Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_transport.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2030b60..3243ea7 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -1139,8 +1139,10 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb) return ret; ret = target_check_reservation(cmd); - if (ret) + if (ret) { + cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT; return ret; + } ret = dev->transport->parse_cdb(cmd); if (ret) -- cgit v1.1 From d8fe29e9dea8d7d61fd140d8779326856478fc62 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 29 Mar 2013 08:09:34 -0600 Subject: Btrfs: don't drop path when printing out tree errors in scrub A user reported a panic where we were panicing somewhere in tree_backref_for_extent from scrub_print_warning. He only captured the trace but looking at scrub_print_warning we drop the path right before we mess with the extent buffer to print out a bunch of stuff, which isn't right. So fix this by dropping the path after we use the eb if we need to. Thanks, Cc: stable@vger.kernel.org Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/scrub.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 53c3501..85e072b 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -542,7 +542,6 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock) eb = path->nodes[0]; ei = btrfs_item_ptr(eb, path->slots[0], struct btrfs_extent_item); item_size = btrfs_item_size_nr(eb, path->slots[0]); - btrfs_release_path(path); if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { do { @@ -558,7 +557,9 @@ static void scrub_print_warning(const char *errstr, struct scrub_block *sblock) ret < 0 ? -1 : ref_level, ret < 0 ? -1 : ref_root); } while (ret != 1); + btrfs_release_path(path); } else { + btrfs_release_path(path); swarn.path = path; swarn.dev = dev; iterate_extent_inodes(fs_info, found_key.objectid, -- cgit v1.1 From ed176886b68fbc450ddbe808684a142fcad72b56 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 29 Mar 2013 11:02:30 -0700 Subject: ia64 idle: delete stale (*idle)() function pointer Commit 3e7fc708eb41 ("ia64 idle: delete pm_idle") in 3.9-rc1 didn't finish the job, leaving an un-initialized reference to (*idle)(). [ Haven't seen a crash from this - but seems like we are just being lucky that "idle" is zero so it does get initialized before we jump to randomland - Len ] Reported-by: Lars-Peter Clausen Signed-off-by: Len Brown Signed-off-by: Tony Luck Signed-off-by: Linus Torvalds --- arch/ia64/kernel/process.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c index e34f565..6f7dc8b 100644 --- a/arch/ia64/kernel/process.c +++ b/arch/ia64/kernel/process.c @@ -291,7 +291,6 @@ cpu_idle (void) } if (!need_resched()) { - void (*idle)(void); #ifdef CONFIG_SMP min_xtp(); #endif @@ -299,9 +298,7 @@ cpu_idle (void) if (mark_idle) (*mark_idle)(1); - if (!idle) - idle = default_idle; - (*idle)(); + default_idle(); if (mark_idle) (*mark_idle)(0); #ifdef CONFIG_SMP -- cgit v1.1 From 6e2a4505dba0cae8faa701426185dfb7b49f537c Mon Sep 17 00:00:00 2001 From: Alex Elder Date: Wed, 27 Mar 2013 09:16:30 -0500 Subject: rbd: don't zero-fill non-image object requests A result of ENOENT from a read request for an object that's part of an rbd image indicates that there is a hole in that portion of the image. Similarly, a short read for such an object indicates that the remainder of the read should be interpreted a full read with zeros filling out the end of the request. This behavior is not correct for objects that are not backing rbd image data. Currently rbd_img_obj_request_callback() assumes it should be done for all objects. Change rbd_img_obj_request_callback() so it only does this zeroing for image objects. Encapsulate that special handling in its own function. Add an assertion that the image object request is a bio request, since we assume that (and we currently don't support any other types). This resolves a problem identified here: http://tracker.ceph.com/issues/4559 The regression was introduced by bf0d5f503dc11d6314c0503591d258d60ee9c944. Reported-by: Dan van der Ster Signed-off-by: Alex Elder Reviewed-off-by: Sage Weil --- drivers/block/rbd.c | 47 ++++++++++++++++++++++++++++++----------------- 1 file changed, 30 insertions(+), 17 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index 6c81a4c..f556f8a 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -1264,6 +1264,32 @@ static bool obj_request_done_test(struct rbd_obj_request *obj_request) return atomic_read(&obj_request->done) != 0; } +static void +rbd_img_obj_request_read_callback(struct rbd_obj_request *obj_request) +{ + dout("%s: obj %p img %p result %d %llu/%llu\n", __func__, + obj_request, obj_request->img_request, obj_request->result, + obj_request->xferred, obj_request->length); + /* + * ENOENT means a hole in the image. We zero-fill the + * entire length of the request. A short read also implies + * zero-fill to the end of the request. Either way we + * update the xferred count to indicate the whole request + * was satisfied. + */ + BUG_ON(obj_request->type != OBJ_REQUEST_BIO); + if (obj_request->result == -ENOENT) { + zero_bio_chain(obj_request->bio_list, 0); + obj_request->result = 0; + obj_request->xferred = obj_request->length; + } else if (obj_request->xferred < obj_request->length && + !obj_request->result) { + zero_bio_chain(obj_request->bio_list, obj_request->xferred); + obj_request->xferred = obj_request->length; + } + obj_request_done_set(obj_request); +} + static void rbd_obj_request_complete(struct rbd_obj_request *obj_request) { dout("%s: obj %p cb %p\n", __func__, obj_request, @@ -1284,23 +1310,10 @@ static void rbd_osd_read_callback(struct rbd_obj_request *obj_request) { dout("%s: obj %p result %d %llu/%llu\n", __func__, obj_request, obj_request->result, obj_request->xferred, obj_request->length); - /* - * ENOENT means a hole in the object. We zero-fill the - * entire length of the request. A short read also implies - * zero-fill to the end of the request. Either way we - * update the xferred count to indicate the whole request - * was satisfied. - */ - if (obj_request->result == -ENOENT) { - zero_bio_chain(obj_request->bio_list, 0); - obj_request->result = 0; - obj_request->xferred = obj_request->length; - } else if (obj_request->xferred < obj_request->length && - !obj_request->result) { - zero_bio_chain(obj_request->bio_list, obj_request->xferred); - obj_request->xferred = obj_request->length; - } - obj_request_done_set(obj_request); + if (obj_request->img_request) + rbd_img_obj_request_read_callback(obj_request); + else + obj_request_done_set(obj_request); } static void rbd_osd_write_callback(struct rbd_obj_request *obj_request) -- cgit v1.1 From 46a1f21a679abaaeae6db9969963dc998c9f1c1c Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 29 Mar 2013 22:59:53 +0100 Subject: PNP: List Rafael Wysocki as a maintainer The Adam Belay's e-mail address in MAINTAINERS under PNP SUPPORT is not valid any more and I started to maintain that code in the meantime as a matter of fact, so list myself as a maintainer of it along with Bjorn and remove the Adam's entry from it. Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- MAINTAINERS | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 44135e3..60a4583 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6209,7 +6209,7 @@ F: include/linux/power_supply.h F: drivers/power/ PNP SUPPORT -M: Adam Belay +M: Rafael J. Wysocki M: Bjorn Helgaas S: Maintained F: drivers/pnp/ -- cgit v1.1 From f73bb9b35596e045feacdf4d2fd32cfb087e2411 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sun, 3 Mar 2013 20:51:28 +0000 Subject: dmaengine: dw_dma: fix endianess for DT xlate function As reported by Wu Fengguang's build robot tracking sparse warnings, the dma_spec arguments in the dw_dma_xlate are already byte swapped on little-endian platforms and must not get swapped again. This code is currently not used anywhere, but will be used in Linux 3.10 when the ARM SPEAr platform starts using the generic DMA DT binding. Signed-off-by: Arnd Bergmann Reported-by: Fengguang Wu Acked-by: Viresh Kumar Signed-off-by: Vinod Koul --- drivers/dma/dw_dmac.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index c599558..eb81ec9 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -1276,9 +1276,9 @@ static struct dma_chan *dw_dma_xlate(struct of_phandle_args *dma_spec, if (dma_spec->args_count != 3) return NULL; - fargs.req = be32_to_cpup(dma_spec->args+0); - fargs.src = be32_to_cpup(dma_spec->args+1); - fargs.dst = be32_to_cpup(dma_spec->args+2); + fargs.req = dma_spec->args[0]; + fargs.src = dma_spec->args[1]; + fargs.dst = dma_spec->args[2]; if (WARN_ON(fargs.req >= DW_DMA_MAX_NR_REQUESTS || fargs.src >= dw->nr_masters || -- cgit v1.1 From bce95c63ef1bcf528ea45c41505eb4c21560d92d Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 20 Feb 2013 13:52:17 +0200 Subject: dw_dmac: adjust slave_id accordingly to request line base On some hardware configurations we have got the request line with the offset. The patch introduces convert_slave_id() helper for that cases. The request line base is came from the driver data provided by the platform_device_id table. Signed-off-by: Mika Westerberg Signed-off-by: Andy Shevchenko Cc: Viresh Kumar Acked-by: Viresh Kumar Signed-off-by: Vinod Koul --- drivers/dma/dw_dmac.c | 17 ++++++++++++++++- drivers/dma/dw_dmac_regs.h | 1 + 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c index eb81ec9..43a5329 100644 --- a/drivers/dma/dw_dmac.c +++ b/drivers/dma/dw_dmac.c @@ -1001,6 +1001,13 @@ static inline void convert_burst(u32 *maxburst) *maxburst = 0; } +static inline void convert_slave_id(struct dw_dma_chan *dwc) +{ + struct dw_dma *dw = to_dw_dma(dwc->chan.device); + + dwc->dma_sconfig.slave_id -= dw->request_line_base; +} + static int set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig) { @@ -1015,6 +1022,7 @@ set_runtime_config(struct dma_chan *chan, struct dma_slave_config *sconfig) convert_burst(&dwc->dma_sconfig.src_maxburst); convert_burst(&dwc->dma_sconfig.dst_maxburst); + convert_slave_id(dwc); return 0; } @@ -1628,6 +1636,7 @@ dw_dma_parse_dt(struct platform_device *pdev) static int dw_probe(struct platform_device *pdev) { + const struct platform_device_id *match; struct dw_dma_platform_data *pdata; struct resource *io; struct dw_dma *dw; @@ -1711,6 +1720,11 @@ static int dw_probe(struct platform_device *pdev) memcpy(dw->data_width, pdata->data_width, 4); } + /* Get the base request line if set */ + match = platform_get_device_id(pdev); + if (match) + dw->request_line_base = (unsigned int)match->driver_data; + /* Calculate all channel mask before DMA setup */ dw->all_chan_mask = (1 << nr_channels) - 1; @@ -1906,7 +1920,8 @@ MODULE_DEVICE_TABLE(of, dw_dma_id_table); #endif static const struct platform_device_id dw_dma_ids[] = { - { "INTL9C60", 0 }, + /* Name, Request Line Base */ + { "INTL9C60", (kernel_ulong_t)16 }, { } }; diff --git a/drivers/dma/dw_dmac_regs.h b/drivers/dma/dw_dmac_regs.h index cf0ce5c..4d02c36 100644 --- a/drivers/dma/dw_dmac_regs.h +++ b/drivers/dma/dw_dmac_regs.h @@ -247,6 +247,7 @@ struct dw_dma { /* hardware configuration */ unsigned char nr_masters; unsigned char data_width[4]; + unsigned int request_line_base; struct dw_dma_chan chan[0]; }; -- cgit v1.1 From dbf520a9d7d4d5ba28d2947be11e34099a5e3e20 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Sun, 31 Mar 2013 00:04:40 +0000 Subject: Revert "lockdep: check that no locks held at freeze time" This reverts commit 6aa9707099c4b25700940eb3d016f16c4434360d. Commit 6aa9707099c4 ("lockdep: check that no locks held at freeze time") causes problems with NFS root filesystems. The failures were noticed on OMAP2 and 3 boards during kernel init: [ BUG: swapper/0/1 still has locks held! ] 3.9.0-rc3-00344-ga937536 #1 Not tainted ------------------------------------- 1 lock held by swapper/0/1: #0: (&type->s_umount_key#13/1){+.+.+.}, at: [] sget+0x248/0x574 stack backtrace: rpc_wait_bit_killable __wait_on_bit out_of_line_wait_on_bit __rpc_execute rpc_run_task rpc_call_sync nfs_proc_get_root nfs_get_root nfs_fs_mount_common nfs_try_mount nfs_fs_mount mount_fs vfs_kern_mount do_mount sys_mount do_mount_root mount_root prepare_namespace kernel_init_freeable kernel_init Although the rootfs mounts, the system is unstable. Here's a transcript from a PM test: http://www.pwsan.com/omap/testlogs/test_v3.9-rc3/20130317194234/pm/37xxevm/37xxevm_log.txt Here's what the test log should look like: http://www.pwsan.com/omap/testlogs/test_v3.8/20130218214403/pm/37xxevm/37xxevm_log.txt Mailing list discussion is here: http://lkml.org/lkml/2013/3/4/221 Deal with this for v3.9 by reverting the problem commit, until folks can figure out the right long-term course of action. Signed-off-by: Paul Walmsley Cc: Mandeep Singh Baines Cc: Jeff Layton Cc: Shawn Guo Cc: Cc: Fengguang Wu Cc: Trond Myklebust Cc: Ingo Molnar Cc: Ben Chan Cc: Oleg Nesterov Cc: Tejun Heo Cc: Rafael J. Wysocki Cc: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/debug_locks.h | 4 ++-- include/linux/freezer.h | 3 --- kernel/exit.c | 2 +- kernel/lockdep.c | 17 +++++++++-------- 4 files changed, 12 insertions(+), 14 deletions(-) diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h index a975de1..3bd46f7 100644 --- a/include/linux/debug_locks.h +++ b/include/linux/debug_locks.h @@ -51,7 +51,7 @@ struct task_struct; extern void debug_show_all_locks(void); extern void debug_show_held_locks(struct task_struct *task); extern void debug_check_no_locks_freed(const void *from, unsigned long len); -extern void debug_check_no_locks_held(void); +extern void debug_check_no_locks_held(struct task_struct *task); #else static inline void debug_show_all_locks(void) { @@ -67,7 +67,7 @@ debug_check_no_locks_freed(const void *from, unsigned long len) } static inline void -debug_check_no_locks_held(void) +debug_check_no_locks_held(struct task_struct *task) { } #endif diff --git a/include/linux/freezer.h b/include/linux/freezer.h index 043a5cf..e70df40 100644 --- a/include/linux/freezer.h +++ b/include/linux/freezer.h @@ -3,7 +3,6 @@ #ifndef FREEZER_H_INCLUDED #define FREEZER_H_INCLUDED -#include #include #include #include @@ -49,8 +48,6 @@ extern void thaw_kernel_threads(void); static inline bool try_to_freeze(void) { - if (!(current->flags & PF_NOFREEZE)) - debug_check_no_locks_held(); might_sleep(); if (likely(!freezing(current))) return false; diff --git a/kernel/exit.c b/kernel/exit.c index 51e485c..60bc027 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -835,7 +835,7 @@ void do_exit(long code) /* * Make sure we are holding no locks: */ - debug_check_no_locks_held(); + debug_check_no_locks_held(tsk); /* * We can do this unlocked here. The futex code uses this flag * just to verify whether the pi state cleanup has been done diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 259db20..8a0efac 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -4088,7 +4088,7 @@ void debug_check_no_locks_freed(const void *mem_from, unsigned long mem_len) } EXPORT_SYMBOL_GPL(debug_check_no_locks_freed); -static void print_held_locks_bug(void) +static void print_held_locks_bug(struct task_struct *curr) { if (!debug_locks_off()) return; @@ -4097,21 +4097,22 @@ static void print_held_locks_bug(void) printk("\n"); printk("=====================================\n"); - printk("[ BUG: %s/%d still has locks held! ]\n", - current->comm, task_pid_nr(current)); + printk("[ BUG: lock held at task exit time! ]\n"); print_kernel_ident(); printk("-------------------------------------\n"); - lockdep_print_held_locks(current); + printk("%s/%d is exiting with locks still held!\n", + curr->comm, task_pid_nr(curr)); + lockdep_print_held_locks(curr); + printk("\nstack backtrace:\n"); dump_stack(); } -void debug_check_no_locks_held(void) +void debug_check_no_locks_held(struct task_struct *task) { - if (unlikely(current->lockdep_depth > 0)) - print_held_locks_bug(); + if (unlikely(task->lockdep_depth > 0)) + print_held_locks_bug(task); } -EXPORT_SYMBOL_GPL(debug_check_no_locks_held); void debug_show_all_locks(void) { -- cgit v1.1 From 07961ac7c0ee8b546658717034fe692fd12eefa9 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 31 Mar 2013 15:12:43 -0700 Subject: Linux 3.9-rc5 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 54d2b2a..58a165b 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 9 SUBLEVEL = 0 -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v1.1