From 383efcd00053ec40023010ce5034bd702e7ab373 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Mon, 18 Mar 2013 12:22:34 -0700 Subject: sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s try_to_wake_up_local() should only be invoked to wake up another task in the same runqueue and BUG_ON()s are used to enforce the rule. Missing try_to_wake_up_local() can stall workqueue execution but such stalls are likely to be finite either by another work item being queued or the one blocked getting unblocked. There's no reason to trigger BUG while holding rq lock crashing the whole system. Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s. Signed-off-by: Tejun Heo Acked-by: Steven Rostedt Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20130318192234.GD3042@htj.dyndns.org Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index b7b03cd..306943f 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1488,8 +1488,10 @@ static void try_to_wake_up_local(struct task_struct *p) { struct rq *rq = task_rq(p); - BUG_ON(rq != this_rq()); - BUG_ON(p == current); + if (WARN_ON_ONCE(rq != this_rq()) || + WARN_ON_ONCE(p == current)) + return; + lockdep_assert_held(&rq->lock); if (!raw_spin_trylock(&p->pi_lock)) { -- cgit v1.1 From 0e48026ae7abf871e51eaa9183c81ab5bef4c267 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Tue, 19 Mar 2013 16:10:38 +0100 Subject: perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer() This patch fixes an uninitialized pt_regs struct in drain BTS function. The pt_regs struct is propagated all the way to the code_get_segment() function from perf_instruction_pointer() and may get garbage. We cannot simply inherit the actual pt_regs from the interrupt because BTS must be flushed on context-switch or when the associated event is disabled. And there we do not have a pt_regs handy. Setting pt_regs to all zeroes may not be the best option but it is not clear what else to do given where the drain_bts_buffer() is called from. In V2, we move the memset() later in the code to avoid doing it when we end up returning early without doing the actual BTS processing. Also dropped the reg.val initialization because it is redundant with the memset() as suggested by PeterZ. Signed-off-by: Stephane Eranian Acked-by: Peter Zijlstra Cc: peterz@infradead.org Cc: sqazi@google.com Cc: ak@linux.intel.com Cc: jolsa@redhat.com Link: http://lkml.kernel.org/r/20130319151038.GA25439@quad Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/perf_event_intel_ds.c | 3 ++- 1 file changed, 2 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 826054a..f71c9f0 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_ds.c +++ b/arch/x86/kernel/cpu/perf_event_intel_ds.c @@ -314,10 +314,11 @@ int intel_pmu_drain_bts_buffer(void) if (top <= at) return 0; + memset(®s, 0, sizeof(regs)); + ds->bts_index = ds->bts_buffer_base; perf_sample_data_init(&data, 0, event->hw.last_period); - regs.ip = 0; /* * Prepare a generic sample, i.e. fill in the invariant fields. -- cgit v1.1 From dd9c086d9f507d02d5ba4d7c5eef4bb9518088b8 Mon Sep 17 00:00:00 2001 From: Stephane Eranian Date: Mon, 18 Mar 2013 14:33:28 +0100 Subject: perf: Fix ring_buffer perf_output_space() boundary calculation This patch fixes a flaw in perf_output_space(). In case the size of the space needed is bigger than the actual buffer size, there may be situations where the function would return true (i.e., there is space) when it should not. head > offset due to rounding of the masking logic. The problem can be tested by activating BTS on Intel processors. A BTS record can be as big as 16 pages. The following command fails: $ perf record -m 4 -c 1 -e branches:u my_test_program You will get a buffer corruption with this. Perf report won't be able to parse the perf.data. The fix is to first check that the requested space is smaller than the buffer size. If so, then the masking logic will work fine. If not, then there is no chance the record can be saved and it will be gracefully handled by upper code layers. [ In v2, we also make the logic for the writable more explicit by renaming it to rb->overwrite because it tells whether or not the buffer can overwrite its tail (suggested by PeterZ). ] Signed-off-by: Stephane Eranian Acked-by: Peter Zijlstra Cc: peterz@infradead.org Cc: jolsa@redhat.com Cc: fweisbec@gmail.com Link: http://lkml.kernel.org/r/20130318133327.GA3056@quad Signed-off-by: Ingo Molnar --- kernel/events/internal.h | 2 +- kernel/events/ring_buffer.c | 22 ++++++++++++++++++---- 2 files changed, 19 insertions(+), 5 deletions(-) diff --git a/kernel/events/internal.h b/kernel/events/internal.h index d56a64c..eb675c4 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -16,7 +16,7 @@ struct ring_buffer { int page_order; /* allocation order */ #endif int nr_pages; /* nr of data pages */ - int writable; /* are we writable */ + int overwrite; /* can overwrite itself */ atomic_t poll; /* POLL_ for wakeups */ diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 23cb34f..97fddb0 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -18,12 +18,24 @@ static bool perf_output_space(struct ring_buffer *rb, unsigned long tail, unsigned long offset, unsigned long head) { - unsigned long mask; + unsigned long sz = perf_data_size(rb); + unsigned long mask = sz - 1; - if (!rb->writable) + /* + * check if user-writable + * overwrite : over-write its own tail + * !overwrite: buffer possibly drops events. + */ + if (rb->overwrite) return true; - mask = perf_data_size(rb) - 1; + /* + * verify that payload is not bigger than buffer + * otherwise masking logic may fail to detect + * the "not enough space" condition + */ + if ((head - offset) > sz) + return false; offset = (offset - tail) & mask; head = (head - tail) & mask; @@ -212,7 +224,9 @@ ring_buffer_init(struct ring_buffer *rb, long watermark, int flags) rb->watermark = max_size / 2; if (flags & RING_BUFFER_WRITABLE) - rb->writable = 1; + rb->overwrite = 0; + else + rb->overwrite = 1; atomic_set(&rb->refcount, 1); -- cgit v1.1 From 904c680c7bf016a8619a045850937427f8d7368c Mon Sep 17 00:00:00 2001 From: Alex Williamson Date: Tue, 26 Mar 2013 11:33:16 -0600 Subject: vfio-pci: Fix possible integer overflow The VFIO_DEVICE_SET_IRQS ioctl takes a start and count parameter, both of which are unsigned. We attempt to bounds check these, but fail to account for the case where start is a very large number, allowing start + count to wrap back into the valid range. Bounds check both start and start + count. Reported-by: Dan Carpenter Signed-off-by: Alex Williamson --- drivers/vfio/pci/vfio_pci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c index 8189cb6..7abc5c8 100644 --- a/drivers/vfio/pci/vfio_pci.c +++ b/drivers/vfio/pci/vfio_pci.c @@ -346,6 +346,7 @@ static long vfio_pci_ioctl(void *device_data, if (!(hdr.flags & VFIO_IRQ_SET_DATA_NONE)) { size_t size; + int max = vfio_pci_get_irq_count(vdev, hdr.index); if (hdr.flags & VFIO_IRQ_SET_DATA_BOOL) size = sizeof(uint8_t); @@ -355,7 +356,7 @@ static long vfio_pci_ioctl(void *device_data, return -EINVAL; if (hdr.argsz - minsz < hdr.count * size || - hdr.count > vfio_pci_get_irq_count(vdev, hdr.index)) + hdr.start >= max || hdr.start + hdr.count > max) return -EINVAL; data = memdup_user((void __user *)(arg + minsz), -- cgit v1.1 From 90e0970f8788cef2c8f5183af5a98f4f94600faf Mon Sep 17 00:00:00 2001 From: Artem Savkov Date: Sat, 30 Mar 2013 21:20:14 +0400 Subject: cfg80211: sched_scan_mtx lock in cfg80211_conn_work() Introduced in f9f475292dbb0e7035fb6661d1524761ea0888d9 ("cfg80211: always check for scan end on P2P device") cfg80211_conn_scan() which requires sched_scan_mtx to be held can be called from cfg80211_conn_work(). Without this we are hitting multiple warnings like the following: WARNING: at net/wireless/sme.c:88 cfg80211_conn_scan+0x1dc/0x3a0 [cfg80211]() Hardware name: 0578A21 Modules linked in: ... Pid: 620, comm: kworker/3:1 Not tainted 3.9.0-rc4-next-20130328+ #326 Call Trace: [] warn_slowpath_common+0x72/0xa0 [] warn_slowpath_null+0x22/0x30 [] cfg80211_conn_scan+0x1dc/0x3a0 [cfg80211] [] cfg80211_conn_do_work+0x94/0x380 [cfg80211] [] cfg80211_conn_work+0xa2/0x130 [cfg80211] [] process_one_work+0x198/0x450 Signed-off-by: Artem Savkov Signed-off-by: Johannes Berg --- net/wireless/sme.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/wireless/sme.c b/net/wireless/sme.c index 09d994d..482c70e 100644 --- a/net/wireless/sme.c +++ b/net/wireless/sme.c @@ -224,6 +224,7 @@ void cfg80211_conn_work(struct work_struct *work) rtnl_lock(); cfg80211_lock_rdev(rdev); mutex_lock(&rdev->devlist_mtx); + mutex_lock(&rdev->sched_scan_mtx); list_for_each_entry(wdev, &rdev->wdev_list, list) { wdev_lock(wdev); @@ -248,6 +249,7 @@ void cfg80211_conn_work(struct work_struct *work) wdev_unlock(wdev); } + mutex_unlock(&rdev->sched_scan_mtx); mutex_unlock(&rdev->devlist_mtx); cfg80211_unlock_rdev(rdev); rtnl_unlock(); -- cgit v1.1 From 8f08d6667287241f6818d35e02b223fb5df97cf1 Mon Sep 17 00:00:00 2001 From: Nigel Roberts Date: Mon, 1 Apr 2013 23:03:22 +1100 Subject: ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED In the conversion to pinctrl, an error in the pins for the rebuild LED was introduced. This patch assigns the correct pins and includes the correct name for the LED in kirkwood-iomega_ix2_200.dts. Signed-off-by: Nigel Roberts Cc: # v3.8.x Signed-off-by: Jason Cooper --- arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts b/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts index 93c3afb..3694e94 100644 --- a/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts +++ b/arch/arm/boot/dts/kirkwood-iomega_ix2_200.dts @@ -96,11 +96,11 @@ marvell,function = "gpio"; }; pmx_led_rebuild_brt_ctrl_1: pmx-led-rebuild-brt-ctrl-1 { - marvell,pins = "mpp44"; + marvell,pins = "mpp46"; marvell,function = "gpio"; }; pmx_led_rebuild_brt_ctrl_2: pmx-led-rebuild-brt-ctrl-2 { - marvell,pins = "mpp45"; + marvell,pins = "mpp47"; marvell,function = "gpio"; }; @@ -157,14 +157,14 @@ gpios = <&gpio0 16 0>; linux,default-trigger = "default-on"; }; - health_led1 { + rebuild_led { + label = "status:white:rebuild_led"; + gpios = <&gpio1 4 0>; + }; + health_led { label = "status:red:health_led"; gpios = <&gpio1 5 0>; }; - health_led2 { - label = "status:white:health_led"; - gpios = <&gpio1 4 0>; - }; backup_led { label = "status:blue:backup_led"; gpios = <&gpio0 15 0>; -- cgit v1.1 From d3dde52209ab571e4e2ec26c66f85ad1355f7475 Mon Sep 17 00:00:00 2001 From: Jussi Kivilinna Date: Thu, 28 Mar 2013 21:54:03 +0200 Subject: crypto: gcm - fix assumption that assoc has one segment rfc4543(gcm(*)) code for GMAC assumes that assoc scatterlist always contains only one segment and only makes use of this first segment. However ipsec passes assoc with three segments when using 'extended sequence number' thus in this case rfc4543(gcm(*)) fails to function correctly. Patch fixes this issue. Reported-by: Chaoxing Lin Tested-by: Chaoxing Lin Cc: stable@vger.kernel.org Signed-off-by: Jussi Kivilinna Signed-off-by: Herbert Xu --- crypto/gcm.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/crypto/gcm.c b/crypto/gcm.c index 137ad1e..13ccbda 100644 --- a/crypto/gcm.c +++ b/crypto/gcm.c @@ -44,6 +44,7 @@ struct crypto_rfc4543_ctx { struct crypto_rfc4543_req_ctx { u8 auth_tag[16]; + u8 assocbuf[32]; struct scatterlist cipher[1]; struct scatterlist payload[2]; struct scatterlist assoc[2]; @@ -1133,9 +1134,19 @@ static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req, scatterwalk_crypto_chain(payload, dst, vdst == req->iv + 8, 2); assoclen += 8 + req->cryptlen - (enc ? 0 : authsize); - sg_init_table(assoc, 2); - sg_set_page(assoc, sg_page(req->assoc), req->assoc->length, - req->assoc->offset); + if (req->assoc->length == req->assoclen) { + sg_init_table(assoc, 2); + sg_set_page(assoc, sg_page(req->assoc), req->assoc->length, + req->assoc->offset); + } else { + BUG_ON(req->assoclen > sizeof(rctx->assocbuf)); + + scatterwalk_map_and_copy(rctx->assocbuf, req->assoc, 0, + req->assoclen, 0); + + sg_init_table(assoc, 2); + sg_set_buf(assoc, rctx->assocbuf, req->assoclen); + } scatterwalk_crypto_chain(assoc, payload, 0, 2); aead_request_set_tfm(subreq, ctx->child); -- cgit v1.1 From 0b94c57717054811dd836d582585d3fb4856b43f Mon Sep 17 00:00:00 2001 From: Padmavathi Venna Date: Tue, 5 Mar 2013 14:55:31 +0530 Subject: DMA: PL330: Add check if device tree compatible This patch register the dma controller with generic dma helpers only in DT case. This also adds some extra error handling in the driver. Signed-off-by: Padmavathi Venna Reported-by: Sachin Kamat Signed-off-by: Vinod Koul --- drivers/dma/pl330.c | 38 +++++++++++++++++++++++++++----------- 1 file changed, 27 insertions(+), 11 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 7181531..5dbc594 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2882,7 +2882,7 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) { struct dma_pl330_platdata *pdat; struct dma_pl330_dmac *pdmac; - struct dma_pl330_chan *pch; + struct dma_pl330_chan *pch, *_p; struct pl330_info *pi; struct dma_device *pd; struct resource *res; @@ -2984,7 +2984,16 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) ret = dma_async_device_register(pd); if (ret) { dev_err(&adev->dev, "unable to register DMAC\n"); - goto probe_err2; + goto probe_err3; + } + + if (adev->dev.of_node) { + ret = of_dma_controller_register(adev->dev.of_node, + of_dma_pl330_xlate, pdmac); + if (ret) { + dev_err(&adev->dev, + "unable to register DMA to the generic DT DMA helpers\n"); + } } dev_info(&adev->dev, @@ -2995,16 +3004,21 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) pi->pcfg.data_bus_width / 8, pi->pcfg.num_chan, pi->pcfg.num_peri, pi->pcfg.num_events); - ret = of_dma_controller_register(adev->dev.of_node, - of_dma_pl330_xlate, pdmac); - if (ret) { - dev_err(&adev->dev, - "unable to register DMA to the generic DT DMA helpers\n"); - goto probe_err2; - } - return 0; +probe_err3: + amba_set_drvdata(adev, NULL); + /* Idle the DMAC */ + list_for_each_entry_safe(pch, _p, &pdmac->ddma.channels, + chan.device_node) { + + /* Remove the channel */ + list_del(&pch->chan.device_node); + + /* Flush the channel */ + pl330_control(&pch->chan, DMA_TERMINATE_ALL, 0); + pl330_free_chan_resources(&pch->chan); + } probe_err2: pl330_del(pi); probe_err1: @@ -3023,8 +3037,10 @@ static int pl330_remove(struct amba_device *adev) if (!pdmac) return 0; - of_dma_controller_free(adev->dev.of_node); + if (adev->dev.of_node) + of_dma_controller_free(adev->dev.of_node); + dma_async_device_unregister(&pdmac->ddma); amba_set_drvdata(adev, NULL); /* Idle the DMAC */ -- cgit v1.1 From bee980d9e9642e96351fa3ca9077b853ecf62f57 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Thu, 28 Mar 2013 10:03:36 -0400 Subject: xen/events: Handle VIRQ_TIMER before any other hardirq in event loop. This avoids any other hardirq handler seeing a very stale jiffies value immediately after wakeup from a long idle period. The one observable symptom of this was a USB keyboard, with software keyboard repeat, which would always repeat a key immediately that it was pressed. This is due to the key press waking the guest, the key handler immediately runs, sees an old jiffies value, and then that jiffies value significantly updated, before the key is unpressed. Reviewed-by: David Vrabel Signed-off-by: Keir Fraser Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/events.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/xen/events.c b/drivers/xen/events.c index aa85881..2647ad8 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -1316,7 +1316,7 @@ static void __xen_evtchn_do_upcall(void) { int start_word_idx, start_bit_idx; int word_idx, bit_idx; - int i; + int i, irq; int cpu = get_cpu(); struct shared_info *s = HYPERVISOR_shared_info; struct vcpu_info *vcpu_info = __this_cpu_read(xen_vcpu); @@ -1324,6 +1324,8 @@ static void __xen_evtchn_do_upcall(void) do { xen_ulong_t pending_words; + xen_ulong_t pending_bits; + struct irq_desc *desc; vcpu_info->evtchn_upcall_pending = 0; @@ -1335,6 +1337,17 @@ static void __xen_evtchn_do_upcall(void) * selector flag. xchg_xen_ulong must contain an * appropriate barrier. */ + if ((irq = per_cpu(virq_to_irq, cpu)[VIRQ_TIMER]) != -1) { + int evtchn = evtchn_from_irq(irq); + word_idx = evtchn / BITS_PER_LONG; + pending_bits = evtchn % BITS_PER_LONG; + if (active_evtchns(cpu, s, word_idx) & (1ULL << pending_bits)) { + desc = irq_to_desc(irq); + if (desc) + generic_handle_irq_desc(irq, desc); + } + } + pending_words = xchg_xen_ulong(&vcpu_info->evtchn_pending_sel, 0); start_word_idx = __this_cpu_read(current_word_idx); @@ -1343,7 +1356,6 @@ static void __xen_evtchn_do_upcall(void) word_idx = start_word_idx; for (i = 0; pending_words != 0; i++) { - xen_ulong_t pending_bits; xen_ulong_t words; words = MASK_LSBS(pending_words, word_idx); @@ -1372,8 +1384,7 @@ static void __xen_evtchn_do_upcall(void) do { xen_ulong_t bits; - int port, irq; - struct irq_desc *desc; + int port; bits = MASK_LSBS(pending_bits, bit_idx); -- cgit v1.1 From b22227944b8fe92b19150b4c36421e37979d9a16 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 29 Mar 2013 10:20:56 -0400 Subject: xen/mmu: On early bootup, flush the TLB when changing RO->RW bits Xen provided pagetables. Occassionaly on a DL380 G4 the guest would crash quite early with this: (XEN) d244:v0: unhandled page fault (ec=0003) (XEN) Pagetable walk from ffffffff84dc7000: (XEN) L4[0x1ff] = 00000000c3f18067 0000000000001789 (XEN) L3[0x1fe] = 00000000c3f14067 000000000000178d (XEN) L2[0x026] = 00000000dc8b2067 0000000000004def (XEN) L1[0x1c7] = 00100000dc8da067 0000000000004dc7 (XEN) domain_crash_sync called from entry.S (XEN) Domain 244 (vcpu#0) crashed on cpu#3: (XEN) ----[ Xen-4.1.3OVM x86_64 debug=n Not tainted ]---- (XEN) CPU: 3 (XEN) RIP: e033:[] (XEN) RFLAGS: 0000000000000216 EM: 1 CONTEXT: pv guest (XEN) rax: 0000000000000000 rbx: ffffffff81785f88 rcx: 000000000000003f (XEN) rdx: 0000000000000000 rsi: 00000000dc8da063 rdi: ffffffff84dc7000 The offending code shows it to be a loop writting the value zero (%rax) in the %rdi (the L4 provided by Xen) register: 0: 44 00 00 add %r8b,(%rax) 3: 31 c0 xor %eax,%eax 5: b9 40 00 00 00 mov $0x40,%ecx a: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1) 11: 00 00 13: ff c9 dec %ecx 15:* 48 89 07 mov %rax,(%rdi) <-- trapping instruction 18: 48 89 47 08 mov %rax,0x8(%rdi) 1c: 48 89 47 10 mov %rax,0x10(%rdi) which fails. xen_setup_kernel_pagetable recycles some of the Xen's page-table entries when it has switched over to its Linux page-tables. Right before try to clear the page, we make a hypercall to change it from _RO to _RW and that works (otherwise we would hit an BUG()). And the _RW flag is set for that page: (XEN) L1[0x1c7] = 001000004885f067 0000000000004dc7 The error code is 3, so PFEC_page_present and PFEC_write_access, so page is present (correct), and we tried to write to the page, but a violation occurred. The one theory is that the the page entries in hardware (which are cached) are not up to date with what we just set. Especially as we have just done an CR3 write and flushed the multicalls. This patch does solve the problem by flusing out the TLB page entry after changing it from _RO to _RW and we don't hit this issue anymore. Fixed-Oracle-Bug: 16243091 [ON OCCASIONS VM START GOES INTO 'CRASH' STATE: CLEAR_PAGE+0X12 ON HP DL380 G4] Reported-and-Tested-by: Saar Maoz Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/mmu.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 6afbb2c..a4ea924 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -1748,14 +1748,18 @@ static void *m2v(phys_addr_t maddr) } /* Set the page permissions on an identity-mapped pages */ -static void set_page_prot(void *addr, pgprot_t prot) +static void set_page_prot_flags(void *addr, pgprot_t prot, unsigned long flags) { unsigned long pfn = __pa(addr) >> PAGE_SHIFT; pte_t pte = pfn_pte(pfn, prot); - if (HYPERVISOR_update_va_mapping((unsigned long)addr, pte, 0)) + if (HYPERVISOR_update_va_mapping((unsigned long)addr, pte, flags)) BUG(); } +static void set_page_prot(void *addr, pgprot_t prot) +{ + return set_page_prot_flags(addr, prot, UVMF_NONE); +} #ifdef CONFIG_X86_32 static void __init xen_map_identity_early(pmd_t *pmd, unsigned long max_pfn) { @@ -1839,12 +1843,12 @@ static void __init check_pt_base(unsigned long *pt_base, unsigned long *pt_end, unsigned long addr) { if (*pt_base == PFN_DOWN(__pa(addr))) { - set_page_prot((void *)addr, PAGE_KERNEL); + set_page_prot_flags((void *)addr, PAGE_KERNEL, UVMF_INVLPG); clear_page((void *)addr); (*pt_base)++; } if (*pt_end == PFN_DOWN(__pa(addr))) { - set_page_prot((void *)addr, PAGE_KERNEL); + set_page_prot_flags((void *)addr, PAGE_KERNEL, UVMF_INVLPG); clear_page((void *)addr); (*pt_end)--; } -- cgit v1.1 From b62d7946b2dd04e07734313a450cb0a8b440f206 Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Tue, 2 Apr 2013 19:37:11 +0200 Subject: MAINTAINERS: Add maintainer for LPC32xx This patch adds Roland Stigge as maintainer for NXP LPC32xx. Signed-off-by: Roland Stigge Signed-off-by: Olof Johansson --- MAINTAINERS | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 4cf5fd3..d596a3f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4935,6 +4935,12 @@ W: logfs.org S: Maintained F: fs/logfs/ +LPC32XX MACHINE SUPPORT +M: Roland Stigge +L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers) +S: Maintained +F: arch/arm/mach-lpc32xx/ + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Nagalakshmi Nandigama M: Sreekanth Reddy -- cgit v1.1 From af0d9187f66db2711f94dc20d5a06ec9ba5845b3 Mon Sep 17 00:00:00 2001 From: Asias He Date: Tue, 2 Apr 2013 23:31:37 +0800 Subject: tcm_vhost: Use ACCESS_ONCE for vs->vs_tpg[target] access In vhost_scsi_handle_vq: tv_tpg = vs->vs_tpg[target]; if (!tv_tpg) { .... return } tv_cmd = vhost_scsi_allocate_cmd(tv_tpg, &v_req, 1) vs->vs_tpg[target] might change after the NULL check and 2) the above line might access tv_tpg from vs->vs_tpg[target]. To prevent 2), use ACCESS_ONCE. Thanks mst for catching this up! Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 2968b49..dd9614eb 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -661,7 +661,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, /* Extract the tpgt */ target = v_req.lun[1]; - tv_tpg = vs->vs_tpg[target]; + tv_tpg = ACCESS_ONCE(vs->vs_tpg[target]); /* Target does not exist, fail the request */ if (unlikely(!tv_tpg)) { -- cgit v1.1 From 55985e15b80beb339d3e332f00a26003deff14e6 Mon Sep 17 00:00:00 2001 From: Marek Vasut Date: Tue, 2 Apr 2013 01:29:29 +0200 Subject: ARM: mxs: Slow down the I2C clock speed Slow down the I2C clock speed on M28 and SPS1 as it turns out the I2C block in i.MX28 can not operate stable enough with the bus running at 400kHz. Note that the driver used by Freescale runs the bus at 250kHz when 400kHz speed is selected, but the mainline Linux kernel runs the bus at actual 400kHz and that's where it is occasionally unstable. Play safe and run the bus at 100kHz. Signed-off-by: Marek Vasut Cc: Fabio Estevam Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx28-m28evk.dts | 1 - arch/arm/boot/dts/imx28-sps1.dts | 1 - 2 files changed, 2 deletions(-) diff --git a/arch/arm/boot/dts/imx28-m28evk.dts b/arch/arm/boot/dts/imx28-m28evk.dts index 6ce3d17..fd36e1c 100644 --- a/arch/arm/boot/dts/imx28-m28evk.dts +++ b/arch/arm/boot/dts/imx28-m28evk.dts @@ -152,7 +152,6 @@ i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; - clock-frequency = <400000>; status = "okay"; sgtl5000: codec@0a { diff --git a/arch/arm/boot/dts/imx28-sps1.dts b/arch/arm/boot/dts/imx28-sps1.dts index e6cde8a..6c6a544 100644 --- a/arch/arm/boot/dts/imx28-sps1.dts +++ b/arch/arm/boot/dts/imx28-sps1.dts @@ -70,7 +70,6 @@ i2c0: i2c@80058000 { pinctrl-names = "default"; pinctrl-0 = <&i2c0_pins_a>; - clock-frequency = <400000>; status = "okay"; rtc: rtc@51 { -- cgit v1.1 From 21de979ecfc7b7f9442f8aea9a54b3ab670d0151 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Mon, 1 Apr 2013 12:44:45 -0700 Subject: mwifiex: complete last internal scan We are waiting on first scan command of internal scan request before association, so we should complete on last internal scan command response. 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/scan.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mwifiex/scan.c b/drivers/net/wireless/mwifiex/scan.c index d215b4d..e7f6dea 100644 --- a/drivers/net/wireless/mwifiex/scan.c +++ b/drivers/net/wireless/mwifiex/scan.c @@ -1393,8 +1393,10 @@ int mwifiex_scan_networks(struct mwifiex_private *priv, queue_work(adapter->workqueue, &adapter->main_work); /* Perform internal scan synchronously */ - if (!priv->scan_request) + if (!priv->scan_request) { + dev_dbg(adapter->dev, "wait internal scan\n"); mwifiex_wait_queue_complete(adapter, cmd_node); + } } else { spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags); @@ -1793,7 +1795,12 @@ check_next_scan: /* Need to indicate IOCTL complete */ if (adapter->curr_cmd->wait_q_enabled) { adapter->cmd_wait_q.status = 0; - mwifiex_complete_cmd(adapter, adapter->curr_cmd); + if (!priv->scan_request) { + dev_dbg(adapter->dev, + "complete internal scan\n"); + mwifiex_complete_cmd(adapter, + adapter->curr_cmd); + } } if (priv->report_scan_result) priv->report_scan_result = false; -- cgit v1.1 From 992f6068f09b3d711ffe247701287a2ee87842cb Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Tue, 2 Apr 2013 21:06:17 +0200 Subject: brcmfmac: fix tkip mic tx/rx ap swap bug. tx and rx michael tkip keys are always swapped in case being configured per mac. This is wrong for AP. The swap should only be done for STA mode. Reviewed-by: Arend Van Spriel Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Piotr Haber Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 2af9c0f..3bc47ea 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -1891,8 +1891,10 @@ static s32 brcmf_add_keyext(struct wiphy *wiphy, struct net_device *ndev, u8 key_idx, const u8 *mac_addr, struct key_params *params) { + struct brcmf_if *ifp = netdev_priv(ndev); struct brcmf_wsec_key key; s32 err = 0; + u8 keybuf[8]; memset(&key, 0, sizeof(key)); key.index = (u32) key_idx; @@ -1916,8 +1918,9 @@ brcmf_add_keyext(struct wiphy *wiphy, struct net_device *ndev, brcmf_dbg(CONN, "Setting the key index %d\n", key.index); memcpy(key.data, params->key, key.len); - if (params->cipher == WLAN_CIPHER_SUITE_TKIP) { - u8 keybuf[8]; + if ((ifp->vif->mode != WL_MODE_AP) && + (params->cipher == WLAN_CIPHER_SUITE_TKIP)) { + brcmf_dbg(CONN, "Swapping RX/TX MIC key\n"); memcpy(keybuf, &key.data[24], sizeof(keybuf)); memcpy(&key.data[24], &key.data[16], sizeof(keybuf)); memcpy(&key.data[16], keybuf, sizeof(keybuf)); @@ -2013,7 +2016,7 @@ brcmf_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, break; case WLAN_CIPHER_SUITE_TKIP: if (ifp->vif->mode != WL_MODE_AP) { - brcmf_dbg(CONN, "Swapping key\n"); + brcmf_dbg(CONN, "Swapping RX/TX MIC key\n"); memcpy(keybuf, &key.data[24], sizeof(keybuf)); memcpy(&key.data[24], &key.data[16], sizeof(keybuf)); memcpy(&key.data[16], keybuf, sizeof(keybuf)); -- cgit v1.1 From 5c33a9420499e384a5b7c2262b17fd608ec76472 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Tue, 2 Apr 2013 21:06:18 +0200 Subject: brcmfmac: fix stopping AP. on stop_ap the dongle was not properly shutdown. As a result it was not possible to restart AP or STA after AP operation without restarting the device. This patch will fix that. Reviewed-by: Arend Van Spriel Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Piotr Haber Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 25 +++++++++++++--------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index 3bc47ea..b9dbf2c 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -3827,8 +3827,9 @@ exit: static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev) { struct brcmf_if *ifp = netdev_priv(ndev); - s32 err = -EPERM; + s32 err; struct brcmf_fil_bss_enable_le bss_enable; + struct brcmf_join_params join_params; brcmf_dbg(TRACE, "Enter\n"); @@ -3836,16 +3837,21 @@ static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev) /* Due to most likely deauths outstanding we sleep */ /* first to make sure they get processed by fw. */ msleep(400); - err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0); - if (err < 0) { - brcmf_err("setting AP mode failed %d\n", err); - goto exit; - } + + memset(&join_params, 0, sizeof(join_params)); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID, + &join_params, sizeof(join_params)); + if (err < 0) + brcmf_err("SET SSID error (%d)\n", err); err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0); - if (err < 0) { + if (err < 0) brcmf_err("BRCMF_C_UP error %d\n", err); - goto exit; - } + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0); + if (err < 0) + brcmf_err("setting AP mode failed %d\n", err); + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, 0); + if (err < 0) + brcmf_err("setting INFRA mode failed %d\n", err); } else { bss_enable.bsscfg_idx = cpu_to_le32(ifp->bssidx); bss_enable.enable = cpu_to_le32(0); @@ -3858,7 +3864,6 @@ static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev) set_bit(BRCMF_VIF_STATUS_AP_CREATING, &ifp->vif->sme_state); clear_bit(BRCMF_VIF_STATUS_AP_CREATED, &ifp->vif->sme_state); -exit: return err; } -- cgit v1.1 From c5bf53a826d22c284e6e1d309d32c388684e26a7 Mon Sep 17 00:00:00 2001 From: Hante Meuleman Date: Tue, 2 Apr 2013 21:06:19 +0200 Subject: brcmfmac: fix returning cipher_suite for get_key operation. When multiple cipher suites have been programmed then the lowest suite is to be retured. This fixes issue when AP mode is using CCMP and TKIP WPA combination where rekeying will fail. Reviewed-by: Arend Van Spriel Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Piotr Haber Signed-off-by: Hante Meuleman Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c index b9dbf2c..ec46fff 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -2121,8 +2121,7 @@ brcmf_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, err = -EAGAIN; goto done; } - switch (wsec & ~SES_OW_ENABLED) { - case WEP_ENABLED: + if (wsec & WEP_ENABLED) { sec = &profile->sec; if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP40) { params.cipher = WLAN_CIPHER_SUITE_WEP40; @@ -2131,16 +2130,13 @@ brcmf_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, params.cipher = WLAN_CIPHER_SUITE_WEP104; brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n"); } - break; - case TKIP_ENABLED: + } else if (wsec & TKIP_ENABLED) { params.cipher = WLAN_CIPHER_SUITE_TKIP; brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n"); - break; - case AES_ENABLED: + } else if (wsec & AES_ENABLED) { params.cipher = WLAN_CIPHER_SUITE_AES_CMAC; brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n"); - break; - default: + } else { brcmf_err("Invalid algo (0x%x)\n", wsec); err = -EINVAL; goto done; -- cgit v1.1 From 3eaa956c5b18b9c955ae5a4e6e6909cae23f38e0 Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Tue, 2 Apr 2013 21:06:20 +0200 Subject: brcmfmac: do not proceed if fail to download nvram to dongle Nvram contains critical initialization parameter for firmware to run. Host driver should not proceed if nvram fails to be downloaded to dongle. Reviewed-by: Piotr Haber Reviewed-by: Arend van Spriel Reviewed-by: Pieter-Paul Giesberts Signed-off-by: Franky Lin Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c index 4469321..35fc68b 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c @@ -3317,15 +3317,15 @@ static int _brcmf_sdbrcm_download_firmware(struct brcmf_sdio *bus) goto err; } - /* External image takes precedence if specified */ if (brcmf_sdbrcm_download_code_file(bus)) { brcmf_err("dongle image file download failed\n"); goto err; } - /* External nvram takes precedence if specified */ - if (brcmf_sdbrcm_download_nvram(bus)) + if (brcmf_sdbrcm_download_nvram(bus)) { brcmf_err("dongle nvram file download failed\n"); + goto err; + } /* Take arm out of reset */ if (brcmf_sdbrcm_download_state(bus, false)) { -- cgit v1.1 From f50b1cd37446ad32c432f0f73bbed67a1c076eae Mon Sep 17 00:00:00 2001 From: Robert Shade Date: Tue, 2 Apr 2013 19:52:45 -0400 Subject: ath9k: Re-enable interrupts after a channel change failure ath_complete_reset will not be called if ath9k_hw_reset is unsuccessful, so we need to re-enable intertupts to balence the previous ath_prepare_reset call. Also schedule a reset as a best effort method to recover the chip from whatever state caused the channel change failure. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=55771 Signed-off-by: Robert Shade Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 6e66f9c..988372d 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -280,6 +280,10 @@ static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan) if (r) { ath_err(common, "Unable to reset channel, reset status %d\n", r); + + ath9k_hw_enable_interrupts(ah); + ath9k_queue_reset(sc, RESET_TYPE_BB_HANG); + goto out; } -- cgit v1.1 From 5448bd8ca139bf8f82b93e10acbc2691cd983a45 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 2 Apr 2013 18:39:53 +0200 Subject: tty: Documentation: fix a path in a DocBook template A wrong path to a driver breaks DocBook built. Signed-off-by: Guennadi Liakhovetski Acked-by: Randy Dunlap Acked-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- Documentation/DocBook/device-drivers.tmpl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl index 7514dbf..c36892c 100644 --- a/Documentation/DocBook/device-drivers.tmpl +++ b/Documentation/DocBook/device-drivers.tmpl @@ -227,7 +227,7 @@ X!Isound/sound_firmware.c 16x50 UART Driver !Edrivers/tty/serial/serial_core.c -!Edrivers/tty/serial/8250/8250.c +!Edrivers/tty/serial/8250/8250_core.c -- cgit v1.1 From 83589b30f1e1dc9898986293c9336b8ce1705dec Mon Sep 17 00:00:00 2001 From: Tim Gardner Date: Mon, 18 Feb 2013 12:56:28 -0700 Subject: rt2x00: rt2x00pci_regbusy_read() - only print register access failure once BugLink: http://bugs.launchpad.net/bugs/1128840 It appears that when this register read fails it never recovers, so I think there is no need to repeat the same error message ad infinitum. Cc: Ivo van Doorn Cc: Gertjan van Wingerde Cc: Helmut Schaa Cc: "John W. Linville" Cc: linux-wireless@vger.kernel.org Cc: users@rt2x00.serialmonkey.com Cc: netdev@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by: Tim Gardner Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/rt2x00pci.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c index a0c8cae..b1c673e 100644 --- a/drivers/net/wireless/rt2x00/rt2x00pci.c +++ b/drivers/net/wireless/rt2x00/rt2x00pci.c @@ -52,8 +52,8 @@ int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, udelay(REGISTER_BUSY_DELAY); } - ERROR(rt2x00dev, "Indirect register access failed: " - "offset=0x%.08x, value=0x%.08x\n", offset, *reg); + printk_once(KERN_ERR "%s() Indirect register access failed: " + "offset=0x%.08x, value=0x%.08x\n", __func__, offset, *reg); *reg = ~0; return 0; -- cgit v1.1 From 69a2bac8984c4e6dba78b330ed183fd580c65e99 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Fri, 29 Mar 2013 15:52:27 +0100 Subject: rt2x00: rt2x00pci: fix build error on Ralink RT3x5x SoCs The rt2800pci driver supports the built-in wireless MAC of the Ralink RT3x5x SoCs. However building the driver for these SoCs leads to the following error: LD init/built-in.o drivers/built-in.o: In function `rt2800pci_rxdone_tasklet': <...>/drivers/net/wireless/rt2x00/rt2800pci.c:1012: undefined reference to `rt2x00pci_rxdone' drivers/built-in.o:(.rodata+0x4780): undefined reference to `rt2x00pci_initialize' drivers/built-in.o:(.rodata+0x4784): undefined reference to `rt2x00pci_uninitialize' drivers/built-in.o:(.rodata+0x47bc): undefined reference to `rt2x00pci_flush_queue' drivers/built-in.o:(.rodata+0x4818): undefined reference to `rt2x00pci_regbusy_read' make[5]: *** [vmlinux] Error 1 The missing functions are provided by the rt2x00pci module. This module is only selected by the rt2800pci driver if PCI support is enabled in the kernel, because some parts of the rt2x00pci code depends on PCI support. PCI support is not available on the RT3x5x SoCs because those have no PCI host controller at all. Move the non PCI specific code from rt2x00pci into a separate module. This makes it possible to use that code even if PCI support is disabled. The affected functions are used by all of the rt2x00 PCI drivers so select the new module for those drivers. Signed-off-by: Gabor Juhos Signed-off-by: John W. Linville --- drivers/net/wireless/rt2x00/Kconfig | 7 + drivers/net/wireless/rt2x00/Makefile | 1 + drivers/net/wireless/rt2x00/rt2400pci.c | 1 + drivers/net/wireless/rt2x00/rt2500pci.c | 1 + drivers/net/wireless/rt2x00/rt2800pci.c | 1 + drivers/net/wireless/rt2x00/rt2x00mmio.c | 216 +++++++++++++++++++++++++++++++ drivers/net/wireless/rt2x00/rt2x00mmio.h | 119 +++++++++++++++++ drivers/net/wireless/rt2x00/rt2x00pci.c | 176 ------------------------- drivers/net/wireless/rt2x00/rt2x00pci.h | 88 ------------- drivers/net/wireless/rt2x00/rt61pci.c | 1 + 10 files changed, 347 insertions(+), 264 deletions(-) create mode 100644 drivers/net/wireless/rt2x00/rt2x00mmio.c create mode 100644 drivers/net/wireless/rt2x00/rt2x00mmio.h diff --git a/drivers/net/wireless/rt2x00/Kconfig b/drivers/net/wireless/rt2x00/Kconfig index 2bf4efa..76cd47e 100644 --- a/drivers/net/wireless/rt2x00/Kconfig +++ b/drivers/net/wireless/rt2x00/Kconfig @@ -20,6 +20,7 @@ if RT2X00 config RT2400PCI tristate "Ralink rt2400 (PCI/PCMCIA) support" depends on PCI + select RT2X00_LIB_MMIO select RT2X00_LIB_PCI select EEPROM_93CX6 ---help--- @@ -31,6 +32,7 @@ config RT2400PCI config RT2500PCI tristate "Ralink rt2500 (PCI/PCMCIA) support" depends on PCI + select RT2X00_LIB_MMIO select RT2X00_LIB_PCI select EEPROM_93CX6 ---help--- @@ -43,6 +45,7 @@ config RT61PCI tristate "Ralink rt2501/rt61 (PCI/PCMCIA) support" depends on PCI select RT2X00_LIB_PCI + select RT2X00_LIB_MMIO select RT2X00_LIB_FIRMWARE select RT2X00_LIB_CRYPTO select CRC_ITU_T @@ -57,6 +60,7 @@ config RT2800PCI tristate "Ralink rt27xx/rt28xx/rt30xx (PCI/PCIe/PCMCIA) support" depends on PCI || SOC_RT288X || SOC_RT305X select RT2800_LIB + select RT2X00_LIB_MMIO select RT2X00_LIB_PCI if PCI select RT2X00_LIB_SOC if SOC_RT288X || SOC_RT305X select RT2X00_LIB_FIRMWARE @@ -185,6 +189,9 @@ endif config RT2800_LIB tristate +config RT2X00_LIB_MMIO + tristate + config RT2X00_LIB_PCI tristate select RT2X00_LIB diff --git a/drivers/net/wireless/rt2x00/Makefile b/drivers/net/wireless/rt2x00/Makefile index 349d5b8..f069d8b 100644 --- a/drivers/net/wireless/rt2x00/Makefile +++ b/drivers/net/wireless/rt2x00/Makefile @@ -9,6 +9,7 @@ rt2x00lib-$(CONFIG_RT2X00_LIB_FIRMWARE) += rt2x00firmware.o rt2x00lib-$(CONFIG_RT2X00_LIB_LEDS) += rt2x00leds.o obj-$(CONFIG_RT2X00_LIB) += rt2x00lib.o +obj-$(CONFIG_RT2X00_LIB_MMIO) += rt2x00mmio.o obj-$(CONFIG_RT2X00_LIB_PCI) += rt2x00pci.o obj-$(CONFIG_RT2X00_LIB_SOC) += rt2x00soc.o obj-$(CONFIG_RT2X00_LIB_USB) += rt2x00usb.o diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c index 221beaa..dcfb54e 100644 --- a/drivers/net/wireless/rt2x00/rt2400pci.c +++ b/drivers/net/wireless/rt2x00/rt2400pci.c @@ -34,6 +34,7 @@ #include #include "rt2x00.h" +#include "rt2x00mmio.h" #include "rt2x00pci.h" #include "rt2400pci.h" diff --git a/drivers/net/wireless/rt2x00/rt2500pci.c b/drivers/net/wireless/rt2x00/rt2500pci.c index 39edc59..e1d2dc9 100644 --- a/drivers/net/wireless/rt2x00/rt2500pci.c +++ b/drivers/net/wireless/rt2x00/rt2500pci.c @@ -34,6 +34,7 @@ #include #include "rt2x00.h" +#include "rt2x00mmio.h" #include "rt2x00pci.h" #include "rt2500pci.h" diff --git a/drivers/net/wireless/rt2x00/rt2800pci.c b/drivers/net/wireless/rt2x00/rt2800pci.c index ded73da..ba5a056 100644 --- a/drivers/net/wireless/rt2x00/rt2800pci.c +++ b/drivers/net/wireless/rt2x00/rt2800pci.c @@ -41,6 +41,7 @@ #include #include "rt2x00.h" +#include "rt2x00mmio.h" #include "rt2x00pci.h" #include "rt2x00soc.h" #include "rt2800lib.h" diff --git a/drivers/net/wireless/rt2x00/rt2x00mmio.c b/drivers/net/wireless/rt2x00/rt2x00mmio.c new file mode 100644 index 0000000..d84a680 --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00mmio.c @@ -0,0 +1,216 @@ +/* + Copyright (C) 2004 - 2009 Ivo van Doorn + + + 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. + */ + +/* + Module: rt2x00mmio + Abstract: rt2x00 generic mmio device routines. + */ + +#include +#include +#include +#include + +#include "rt2x00.h" +#include "rt2x00mmio.h" + +/* + * Register access. + */ +int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + const struct rt2x00_field32 field, + u32 *reg) +{ + unsigned int i; + + if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) + return 0; + + for (i = 0; i < REGISTER_BUSY_COUNT; i++) { + rt2x00pci_register_read(rt2x00dev, offset, reg); + if (!rt2x00_get_field32(*reg, field)) + return 1; + udelay(REGISTER_BUSY_DELAY); + } + + printk_once(KERN_ERR "%s() Indirect register access failed: " + "offset=0x%.08x, value=0x%.08x\n", __func__, offset, *reg); + *reg = ~0; + + return 0; +} +EXPORT_SYMBOL_GPL(rt2x00pci_regbusy_read); + +bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) +{ + struct data_queue *queue = rt2x00dev->rx; + struct queue_entry *entry; + struct queue_entry_priv_pci *entry_priv; + struct skb_frame_desc *skbdesc; + int max_rx = 16; + + while (--max_rx) { + entry = rt2x00queue_get_entry(queue, Q_INDEX); + entry_priv = entry->priv_data; + + if (rt2x00dev->ops->lib->get_entry_state(entry)) + break; + + /* + * Fill in desc fields of the skb descriptor + */ + skbdesc = get_skb_frame_desc(entry->skb); + skbdesc->desc = entry_priv->desc; + skbdesc->desc_len = entry->queue->desc_size; + + /* + * DMA is already done, notify rt2x00lib that + * it finished successfully. + */ + rt2x00lib_dmastart(entry); + rt2x00lib_dmadone(entry); + + /* + * Send the frame to rt2x00lib for further processing. + */ + rt2x00lib_rxdone(entry, GFP_ATOMIC); + } + + return !max_rx; +} +EXPORT_SYMBOL_GPL(rt2x00pci_rxdone); + +void rt2x00pci_flush_queue(struct data_queue *queue, bool drop) +{ + unsigned int i; + + for (i = 0; !rt2x00queue_empty(queue) && i < 10; i++) + msleep(10); +} +EXPORT_SYMBOL_GPL(rt2x00pci_flush_queue); + +/* + * Device initialization handlers. + */ +static int rt2x00pci_alloc_queue_dma(struct rt2x00_dev *rt2x00dev, + struct data_queue *queue) +{ + struct queue_entry_priv_pci *entry_priv; + void *addr; + dma_addr_t dma; + unsigned int i; + + /* + * Allocate DMA memory for descriptor and buffer. + */ + addr = dma_alloc_coherent(rt2x00dev->dev, + queue->limit * queue->desc_size, + &dma, GFP_KERNEL); + if (!addr) + return -ENOMEM; + + memset(addr, 0, queue->limit * queue->desc_size); + + /* + * Initialize all queue entries to contain valid addresses. + */ + for (i = 0; i < queue->limit; i++) { + entry_priv = queue->entries[i].priv_data; + entry_priv->desc = addr + i * queue->desc_size; + entry_priv->desc_dma = dma + i * queue->desc_size; + } + + return 0; +} + +static void rt2x00pci_free_queue_dma(struct rt2x00_dev *rt2x00dev, + struct data_queue *queue) +{ + struct queue_entry_priv_pci *entry_priv = + queue->entries[0].priv_data; + + if (entry_priv->desc) + dma_free_coherent(rt2x00dev->dev, + queue->limit * queue->desc_size, + entry_priv->desc, entry_priv->desc_dma); + entry_priv->desc = NULL; +} + +int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev) +{ + struct data_queue *queue; + int status; + + /* + * Allocate DMA + */ + queue_for_each(rt2x00dev, queue) { + status = rt2x00pci_alloc_queue_dma(rt2x00dev, queue); + if (status) + goto exit; + } + + /* + * Register interrupt handler. + */ + status = request_irq(rt2x00dev->irq, + rt2x00dev->ops->lib->irq_handler, + IRQF_SHARED, rt2x00dev->name, rt2x00dev); + if (status) { + ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n", + rt2x00dev->irq, status); + goto exit; + } + + return 0; + +exit: + queue_for_each(rt2x00dev, queue) + rt2x00pci_free_queue_dma(rt2x00dev, queue); + + return status; +} +EXPORT_SYMBOL_GPL(rt2x00pci_initialize); + +void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev) +{ + struct data_queue *queue; + + /* + * Free irq line. + */ + free_irq(rt2x00dev->irq, rt2x00dev); + + /* + * Free DMA + */ + queue_for_each(rt2x00dev, queue) + rt2x00pci_free_queue_dma(rt2x00dev, queue); +} +EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize); + +/* + * rt2x00mmio module information. + */ +MODULE_AUTHOR(DRV_PROJECT); +MODULE_VERSION(DRV_VERSION); +MODULE_DESCRIPTION("rt2x00 mmio library"); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/wireless/rt2x00/rt2x00mmio.h b/drivers/net/wireless/rt2x00/rt2x00mmio.h new file mode 100644 index 0000000..4ecaf60 --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00mmio.h @@ -0,0 +1,119 @@ +/* + Copyright (C) 2004 - 2009 Ivo van Doorn + + + 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. + */ + +/* + Module: rt2x00mmio + Abstract: Data structures for the rt2x00mmio module. + */ + +#ifndef RT2X00MMIO_H +#define RT2X00MMIO_H + +#include + +/* + * Register access. + */ +static inline void rt2x00pci_register_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + u32 *value) +{ + *value = readl(rt2x00dev->csr.base + offset); +} + +static inline void rt2x00pci_register_multiread(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + void *value, const u32 length) +{ + memcpy_fromio(value, rt2x00dev->csr.base + offset, length); +} + +static inline void rt2x00pci_register_write(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + u32 value) +{ + writel(value, rt2x00dev->csr.base + offset); +} + +static inline void rt2x00pci_register_multiwrite(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + const void *value, + const u32 length) +{ + __iowrite32_copy(rt2x00dev->csr.base + offset, value, length >> 2); +} + +/** + * rt2x00pci_regbusy_read - Read from register with busy check + * @rt2x00dev: Device pointer, see &struct rt2x00_dev. + * @offset: Register offset + * @field: Field to check if register is busy + * @reg: Pointer to where register contents should be stored + * + * This function will read the given register, and checks if the + * register is busy. If it is, it will sleep for a couple of + * microseconds before reading the register again. If the register + * is not read after a certain timeout, this function will return + * FALSE. + */ +int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, + const unsigned int offset, + const struct rt2x00_field32 field, + u32 *reg); + +/** + * struct queue_entry_priv_pci: Per entry PCI specific information + * + * @desc: Pointer to device descriptor + * @desc_dma: DMA pointer to &desc. + * @data: Pointer to device's entry memory. + * @data_dma: DMA pointer to &data. + */ +struct queue_entry_priv_pci { + __le32 *desc; + dma_addr_t desc_dma; +}; + +/** + * rt2x00pci_rxdone - Handle RX done events + * @rt2x00dev: Device pointer, see &struct rt2x00_dev. + * + * Returns true if there are still rx frames pending and false if all + * pending rx frames were processed. + */ +bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev); + +/** + * rt2x00pci_flush_queue - Flush data queue + * @queue: Data queue to stop + * @drop: True to drop all pending frames. + * + * This will wait for a maximum of 100ms, waiting for the queues + * to become empty. + */ +void rt2x00pci_flush_queue(struct data_queue *queue, bool drop); + +/* + * Device initialization handlers. + */ +int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev); +void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev); + +#endif /* RT2X00MMIO_H */ diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c index b1c673e..e87865e 100644 --- a/drivers/net/wireless/rt2x00/rt2x00pci.c +++ b/drivers/net/wireless/rt2x00/rt2x00pci.c @@ -33,182 +33,6 @@ #include "rt2x00pci.h" /* - * Register access. - */ -int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - const struct rt2x00_field32 field, - u32 *reg) -{ - unsigned int i; - - if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) - return 0; - - for (i = 0; i < REGISTER_BUSY_COUNT; i++) { - rt2x00pci_register_read(rt2x00dev, offset, reg); - if (!rt2x00_get_field32(*reg, field)) - return 1; - udelay(REGISTER_BUSY_DELAY); - } - - printk_once(KERN_ERR "%s() Indirect register access failed: " - "offset=0x%.08x, value=0x%.08x\n", __func__, offset, *reg); - *reg = ~0; - - return 0; -} -EXPORT_SYMBOL_GPL(rt2x00pci_regbusy_read); - -bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev) -{ - struct data_queue *queue = rt2x00dev->rx; - struct queue_entry *entry; - struct queue_entry_priv_pci *entry_priv; - struct skb_frame_desc *skbdesc; - int max_rx = 16; - - while (--max_rx) { - entry = rt2x00queue_get_entry(queue, Q_INDEX); - entry_priv = entry->priv_data; - - if (rt2x00dev->ops->lib->get_entry_state(entry)) - break; - - /* - * Fill in desc fields of the skb descriptor - */ - skbdesc = get_skb_frame_desc(entry->skb); - skbdesc->desc = entry_priv->desc; - skbdesc->desc_len = entry->queue->desc_size; - - /* - * DMA is already done, notify rt2x00lib that - * it finished successfully. - */ - rt2x00lib_dmastart(entry); - rt2x00lib_dmadone(entry); - - /* - * Send the frame to rt2x00lib for further processing. - */ - rt2x00lib_rxdone(entry, GFP_ATOMIC); - } - - return !max_rx; -} -EXPORT_SYMBOL_GPL(rt2x00pci_rxdone); - -void rt2x00pci_flush_queue(struct data_queue *queue, bool drop) -{ - unsigned int i; - - for (i = 0; !rt2x00queue_empty(queue) && i < 10; i++) - msleep(10); -} -EXPORT_SYMBOL_GPL(rt2x00pci_flush_queue); - -/* - * Device initialization handlers. - */ -static int rt2x00pci_alloc_queue_dma(struct rt2x00_dev *rt2x00dev, - struct data_queue *queue) -{ - struct queue_entry_priv_pci *entry_priv; - void *addr; - dma_addr_t dma; - unsigned int i; - - /* - * Allocate DMA memory for descriptor and buffer. - */ - addr = dma_alloc_coherent(rt2x00dev->dev, - queue->limit * queue->desc_size, - &dma, GFP_KERNEL); - if (!addr) - return -ENOMEM; - - memset(addr, 0, queue->limit * queue->desc_size); - - /* - * Initialize all queue entries to contain valid addresses. - */ - for (i = 0; i < queue->limit; i++) { - entry_priv = queue->entries[i].priv_data; - entry_priv->desc = addr + i * queue->desc_size; - entry_priv->desc_dma = dma + i * queue->desc_size; - } - - return 0; -} - -static void rt2x00pci_free_queue_dma(struct rt2x00_dev *rt2x00dev, - struct data_queue *queue) -{ - struct queue_entry_priv_pci *entry_priv = - queue->entries[0].priv_data; - - if (entry_priv->desc) - dma_free_coherent(rt2x00dev->dev, - queue->limit * queue->desc_size, - entry_priv->desc, entry_priv->desc_dma); - entry_priv->desc = NULL; -} - -int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev) -{ - struct data_queue *queue; - int status; - - /* - * Allocate DMA - */ - queue_for_each(rt2x00dev, queue) { - status = rt2x00pci_alloc_queue_dma(rt2x00dev, queue); - if (status) - goto exit; - } - - /* - * Register interrupt handler. - */ - status = request_irq(rt2x00dev->irq, - rt2x00dev->ops->lib->irq_handler, - IRQF_SHARED, rt2x00dev->name, rt2x00dev); - if (status) { - ERROR(rt2x00dev, "IRQ %d allocation failed (error %d).\n", - rt2x00dev->irq, status); - goto exit; - } - - return 0; - -exit: - queue_for_each(rt2x00dev, queue) - rt2x00pci_free_queue_dma(rt2x00dev, queue); - - return status; -} -EXPORT_SYMBOL_GPL(rt2x00pci_initialize); - -void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev) -{ - struct data_queue *queue; - - /* - * Free irq line. - */ - free_irq(rt2x00dev->irq, rt2x00dev); - - /* - * Free DMA - */ - queue_for_each(rt2x00dev, queue) - rt2x00pci_free_queue_dma(rt2x00dev, queue); -} -EXPORT_SYMBOL_GPL(rt2x00pci_uninitialize); - -/* * PCI driver handlers. */ static void rt2x00pci_free_reg(struct rt2x00_dev *rt2x00dev) diff --git a/drivers/net/wireless/rt2x00/rt2x00pci.h b/drivers/net/wireless/rt2x00/rt2x00pci.h index e2c99f2..60d90b2 100644 --- a/drivers/net/wireless/rt2x00/rt2x00pci.h +++ b/drivers/net/wireless/rt2x00/rt2x00pci.h @@ -36,94 +36,6 @@ #define PCI_DEVICE_DATA(__ops) .driver_data = (kernel_ulong_t)(__ops) /* - * Register access. - */ -static inline void rt2x00pci_register_read(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - u32 *value) -{ - *value = readl(rt2x00dev->csr.base + offset); -} - -static inline void rt2x00pci_register_multiread(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - void *value, const u32 length) -{ - memcpy_fromio(value, rt2x00dev->csr.base + offset, length); -} - -static inline void rt2x00pci_register_write(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - u32 value) -{ - writel(value, rt2x00dev->csr.base + offset); -} - -static inline void rt2x00pci_register_multiwrite(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - const void *value, - const u32 length) -{ - __iowrite32_copy(rt2x00dev->csr.base + offset, value, length >> 2); -} - -/** - * rt2x00pci_regbusy_read - Read from register with busy check - * @rt2x00dev: Device pointer, see &struct rt2x00_dev. - * @offset: Register offset - * @field: Field to check if register is busy - * @reg: Pointer to where register contents should be stored - * - * This function will read the given register, and checks if the - * register is busy. If it is, it will sleep for a couple of - * microseconds before reading the register again. If the register - * is not read after a certain timeout, this function will return - * FALSE. - */ -int rt2x00pci_regbusy_read(struct rt2x00_dev *rt2x00dev, - const unsigned int offset, - const struct rt2x00_field32 field, - u32 *reg); - -/** - * struct queue_entry_priv_pci: Per entry PCI specific information - * - * @desc: Pointer to device descriptor - * @desc_dma: DMA pointer to &desc. - * @data: Pointer to device's entry memory. - * @data_dma: DMA pointer to &data. - */ -struct queue_entry_priv_pci { - __le32 *desc; - dma_addr_t desc_dma; -}; - -/** - * rt2x00pci_rxdone - Handle RX done events - * @rt2x00dev: Device pointer, see &struct rt2x00_dev. - * - * Returns true if there are still rx frames pending and false if all - * pending rx frames were processed. - */ -bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev); - -/** - * rt2x00pci_flush_queue - Flush data queue - * @queue: Data queue to stop - * @drop: True to drop all pending frames. - * - * This will wait for a maximum of 100ms, waiting for the queues - * to become empty. - */ -void rt2x00pci_flush_queue(struct data_queue *queue, bool drop); - -/* - * Device initialization handlers. - */ -int rt2x00pci_initialize(struct rt2x00_dev *rt2x00dev); -void rt2x00pci_uninitialize(struct rt2x00_dev *rt2x00dev); - -/* * PCI driver handlers. */ int rt2x00pci_probe(struct pci_dev *pci_dev, const struct rt2x00_ops *ops); diff --git a/drivers/net/wireless/rt2x00/rt61pci.c b/drivers/net/wireless/rt2x00/rt61pci.c index f95792c..9e3c8ff 100644 --- a/drivers/net/wireless/rt2x00/rt61pci.c +++ b/drivers/net/wireless/rt2x00/rt61pci.c @@ -35,6 +35,7 @@ #include #include "rt2x00.h" +#include "rt2x00mmio.h" #include "rt2x00pci.h" #include "rt61pci.h" -- cgit v1.1 From 6d4f0139d642c45411a47879325891ce2a7c164a Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 27 Feb 2013 11:41:41 -0800 Subject: misc/vmw_vmci: Add dependency on CONFIG_NET Building the vmw_vmci driver with CONFIG_NET undefined results in: drivers/built-in.o: In function `__qp_memcpy_from_queue.isra.13': vmci_queue_pair.c:(.text+0x1671a8): undefined reference to `memcpy_toiovec' drivers/built-in.o: In function `__qp_memcpy_to_queue.isra.14': vmci_queue_pair.c:(.text+0x167341): undefined reference to `memcpy_fromiovec' make[1]: [vmlinux] Error 1 (ignored) since memcpy_toiovec and memcpy_fromiovec are defined in the networking code. Add the missing dependency. Signed-off-by: Guenter Roeck Acked-by: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- drivers/misc/vmw_vmci/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/vmw_vmci/Kconfig b/drivers/misc/vmw_vmci/Kconfig index 39c2eca..ea98f7e 100644 --- a/drivers/misc/vmw_vmci/Kconfig +++ b/drivers/misc/vmw_vmci/Kconfig @@ -4,7 +4,7 @@ config VMWARE_VMCI tristate "VMware VMCI Driver" - depends on X86 && PCI + depends on X86 && PCI && NET help This is VMware's Virtual Machine Communication Interface. It enables high-speed communication between host and guest in a virtual -- cgit v1.1 From c678ef5286ddb5cf70384ad5af286b0afc9b73e1 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 3 Apr 2013 21:53:57 +0200 Subject: block: avoid using uninitialized value in from queue_var_store As found by gcc-4.8, the QUEUE_SYSFS_BIT_FNS macro creates functions that use a value generated by queue_var_store independent of whether that value was set or not. block/blk-sysfs.c: In function 'queue_store_nonrot': block/blk-sysfs.c:244:385: warning: 'val' may be used uninitialized in this function [-Wmaybe-uninitialized] Unlike most other such warnings, this one is not a false positive, writing any non-number string into the sysfs files indeed has an undefined result, rather than returning an error. Signed-off-by: Arnd Bergmann Signed-off-by: Jens Axboe --- block/blk-sysfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index 6206a93..5efc5a6 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -229,6 +229,8 @@ queue_store_##name(struct request_queue *q, const char *page, size_t count) \ unsigned long val; \ ssize_t ret; \ ret = queue_var_store(&val, page, count); \ + if (ret < 0) \ + return ret; \ if (neg) \ val = !val; \ \ -- cgit v1.1 From d0d096b1d8b97172cee953f1a00b7d4379d398da Mon Sep 17 00:00:00 2001 From: Asai Thambi S P Date: Wed, 3 Apr 2013 19:53:07 +0530 Subject: mtip32xx: recovery from command timeout To recover from command timeouts, reset the device. In addition to that improved timeout handling of PIO commands. Signed-off-by: Sam Bradshaw Signed-off-by: Asai Thambi S P Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 177 +++++++++++++++++++------------------- 1 file changed, 87 insertions(+), 90 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 92250af..30f2336 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -243,40 +243,31 @@ static inline void release_slot(struct mtip_port *port, int tag) /* * Reset the HBA (without sleeping) * - * Just like hba_reset, except does not call sleep, so can be - * run from interrupt/tasklet context. - * * @dd Pointer to the driver data structure. * * return value * 0 The reset was successful. * -1 The HBA Reset bit did not clear. */ -static int hba_reset_nosleep(struct driver_data *dd) +static int mtip_hba_reset(struct driver_data *dd) { unsigned long timeout; - /* Chip quirk: quiesce any chip function */ - mdelay(10); - /* Set the reset bit */ writel(HOST_RESET, dd->mmio + HOST_CTL); /* Flush */ readl(dd->mmio + HOST_CTL); - /* - * Wait 10ms then spin for up to 1 second - * waiting for reset acknowledgement - */ - timeout = jiffies + msecs_to_jiffies(1000); - mdelay(10); - while ((readl(dd->mmio + HOST_CTL) & HOST_RESET) - && time_before(jiffies, timeout)) - mdelay(1); + /* Spin for up to 2 seconds, waiting for reset acknowledgement */ + timeout = jiffies + msecs_to_jiffies(2000); + do { + mdelay(10); + if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag)) + return -1; - if (test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag)) - return -1; + } while ((readl(dd->mmio + HOST_CTL) & HOST_RESET) + && time_before(jiffies, timeout)); if (readl(dd->mmio + HOST_CTL) & HOST_RESET) return -1; @@ -481,7 +472,7 @@ static void mtip_restart_port(struct mtip_port *port) dev_warn(&port->dd->pdev->dev, "PxCMD.CR not clear, escalating reset\n"); - if (hba_reset_nosleep(port->dd)) + if (mtip_hba_reset(port->dd)) dev_err(&port->dd->pdev->dev, "HBA reset escalation failed.\n"); @@ -527,6 +518,26 @@ static void mtip_restart_port(struct mtip_port *port) } +static int mtip_device_reset(struct driver_data *dd) +{ + int rv = 0; + + if (mtip_check_surprise_removal(dd->pdev)) + return 0; + + if (mtip_hba_reset(dd) < 0) + rv = -EFAULT; + + mdelay(1); + mtip_init_port(dd->port); + mtip_start_port(dd->port); + + /* Enable interrupts on the HBA. */ + writel(readl(dd->mmio + HOST_CTL) | HOST_IRQ_EN, + dd->mmio + HOST_CTL); + return rv; +} + /* * Helper function for tag logging */ @@ -632,7 +643,7 @@ static void mtip_timeout_function(unsigned long int data) if (cmdto_cnt) { print_tags(port->dd, "timed out", tagaccum, cmdto_cnt); if (!test_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags)) { - mtip_restart_port(port); + mtip_device_reset(port->dd); wake_up_interruptible(&port->svc_wait); } clear_bit(MTIP_PF_EH_ACTIVE_BIT, &port->flags); @@ -1283,11 +1294,11 @@ static int mtip_exec_internal_command(struct mtip_port *port, int rv = 0, ready2go = 1; struct mtip_cmd *int_cmd = &port->commands[MTIP_TAG_INTERNAL]; unsigned long to; + struct driver_data *dd = port->dd; /* Make sure the buffer is 8 byte aligned. This is asic specific. */ if (buffer & 0x00000007) { - dev_err(&port->dd->pdev->dev, - "SG buffer is not 8 byte aligned\n"); + dev_err(&dd->pdev->dev, "SG buffer is not 8 byte aligned\n"); return -EFAULT; } @@ -1300,23 +1311,21 @@ static int mtip_exec_internal_command(struct mtip_port *port, mdelay(100); } while (time_before(jiffies, to)); if (!ready2go) { - dev_warn(&port->dd->pdev->dev, + dev_warn(&dd->pdev->dev, "Internal cmd active. new cmd [%02X]\n", fis->command); return -EBUSY; } set_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); port->ic_pause_timer = 0; - if (fis->command == ATA_CMD_SEC_ERASE_UNIT) - clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); - else if (fis->command == ATA_CMD_DOWNLOAD_MICRO) - clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags); + clear_bit(MTIP_PF_SE_ACTIVE_BIT, &port->flags); + clear_bit(MTIP_PF_DM_ACTIVE_BIT, &port->flags); if (atomic == GFP_KERNEL) { if (fis->command != ATA_CMD_STANDBYNOW1) { /* wait for io to complete if non atomic */ if (mtip_quiesce_io(port, 5000) < 0) { - dev_warn(&port->dd->pdev->dev, + dev_warn(&dd->pdev->dev, "Failed to quiesce IO\n"); release_slot(port, MTIP_TAG_INTERNAL); clear_bit(MTIP_PF_IC_ACTIVE_BIT, &port->flags); @@ -1361,58 +1370,84 @@ static int mtip_exec_internal_command(struct mtip_port *port, /* Issue the command to the hardware */ mtip_issue_non_ncq_command(port, MTIP_TAG_INTERNAL); - /* Poll if atomic, wait_for_completion otherwise */ if (atomic == GFP_KERNEL) { /* Wait for the command to complete or timeout. */ - if (wait_for_completion_timeout( + if (wait_for_completion_interruptible_timeout( &wait, - msecs_to_jiffies(timeout)) == 0) { - dev_err(&port->dd->pdev->dev, - "Internal command did not complete [%d] " - "within timeout of %lu ms\n", - atomic, timeout); - if (mtip_check_surprise_removal(port->dd->pdev) || + msecs_to_jiffies(timeout)) <= 0) { + if (rv == -ERESTARTSYS) { /* interrupted */ + dev_err(&dd->pdev->dev, + "Internal command [%02X] was interrupted after %lu ms\n", + fis->command, timeout); + rv = -EINTR; + goto exec_ic_exit; + } else if (rv == 0) /* timeout */ + dev_err(&dd->pdev->dev, + "Internal command did not complete [%02X] within timeout of %lu ms\n", + fis->command, timeout); + else + dev_err(&dd->pdev->dev, + "Internal command [%02X] wait returned code [%d] after %lu ms - unhandled\n", + fis->command, rv, timeout); + + if (mtip_check_surprise_removal(dd->pdev) || test_bit(MTIP_DDF_REMOVE_PENDING_BIT, - &port->dd->dd_flag)) { + &dd->dd_flag)) { + dev_err(&dd->pdev->dev, + "Internal command [%02X] wait returned due to SR\n", + fis->command); rv = -ENXIO; goto exec_ic_exit; } + mtip_device_reset(dd); /* recover from timeout issue */ rv = -EAGAIN; + goto exec_ic_exit; } } else { + u32 hba_stat, port_stat; + /* Spin for checking if command still outstanding */ timeout = jiffies + msecs_to_jiffies(timeout); while ((readl(port->cmd_issue[MTIP_TAG_INTERNAL]) & (1 << MTIP_TAG_INTERNAL)) && time_before(jiffies, timeout)) { - if (mtip_check_surprise_removal(port->dd->pdev)) { + if (mtip_check_surprise_removal(dd->pdev)) { rv = -ENXIO; goto exec_ic_exit; } if ((fis->command != ATA_CMD_STANDBYNOW1) && test_bit(MTIP_DDF_REMOVE_PENDING_BIT, - &port->dd->dd_flag)) { + &dd->dd_flag)) { rv = -ENXIO; goto exec_ic_exit; } - if (readl(port->mmio + PORT_IRQ_STAT) & PORT_IRQ_ERR) { - atomic_inc(&int_cmd->active); /* error */ - break; + port_stat = readl(port->mmio + PORT_IRQ_STAT); + if (!port_stat) + continue; + + if (port_stat & PORT_IRQ_ERR) { + dev_err(&dd->pdev->dev, + "Internal command [%02X] failed\n", + fis->command); + mtip_device_reset(dd); + rv = -EIO; + goto exec_ic_exit; + } else { + writel(port_stat, port->mmio + PORT_IRQ_STAT); + hba_stat = readl(dd->mmio + HOST_IRQ_STAT); + if (hba_stat) + writel(hba_stat, + dd->mmio + HOST_IRQ_STAT); } + break; } } - if (atomic_read(&int_cmd->active) > 1) { - dev_err(&port->dd->pdev->dev, - "Internal command [%02X] failed\n", fis->command); - rv = -EIO; - } if (readl(port->cmd_issue[MTIP_TAG_INTERNAL]) & (1 << MTIP_TAG_INTERNAL)) { rv = -ENXIO; - if (!test_bit(MTIP_DDF_REMOVE_PENDING_BIT, - &port->dd->dd_flag)) { - mtip_restart_port(port); + if (!test_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag)) { + mtip_device_reset(dd); rv = -EAGAIN; } } @@ -1724,7 +1759,8 @@ static int mtip_get_smart_attr(struct mtip_port *port, unsigned int id, * -EINVAL Invalid parameters passed in, trim not supported * -EIO Error submitting trim request to hw */ -static int mtip_send_trim(struct driver_data *dd, unsigned int lba, unsigned int len) +static int mtip_send_trim(struct driver_data *dd, unsigned int lba, + unsigned int len) { int i, rv = 0; u64 tlba, tlen, sect_left; @@ -1811,45 +1847,6 @@ static bool mtip_hw_get_capacity(struct driver_data *dd, sector_t *sectors) } /* - * Reset the HBA. - * - * Resets the HBA by setting the HBA Reset bit in the Global - * HBA Control register. After setting the HBA Reset bit the - * function waits for 1 second before reading the HBA Reset - * bit to make sure it has cleared. If HBA Reset is not clear - * an error is returned. Cannot be used in non-blockable - * context. - * - * @dd Pointer to the driver data structure. - * - * return value - * 0 The reset was successful. - * -1 The HBA Reset bit did not clear. - */ -static int mtip_hba_reset(struct driver_data *dd) -{ - mtip_deinit_port(dd->port); - - /* Set the reset bit */ - writel(HOST_RESET, dd->mmio + HOST_CTL); - - /* Flush */ - readl(dd->mmio + HOST_CTL); - - /* Wait for reset to clear */ - ssleep(1); - - /* Check the bit has cleared */ - if (readl(dd->mmio + HOST_CTL) & HOST_RESET) { - dev_err(&dd->pdev->dev, - "Reset bit did not clear.\n"); - return -1; - } - - return 0; -} - -/* * Display the identify command data. * * @port Pointer to the port data structure. -- cgit v1.1 From 6b06d35f3f63dbfde71c792b8584225f3d1fc7f2 Mon Sep 17 00:00:00 2001 From: Asai Thambi S P Date: Wed, 3 Apr 2013 19:54:35 +0530 Subject: mtip32xx: return 0 from pci probe in case of rebuild Fix to return 0 from pci probe in case of rebuild. If not, pci consider probe has failed, and crash during rmmod. Signed-off-by: Asai Thambi S P Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 30f2336..ce4e47d 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -4302,6 +4302,8 @@ static int mtip_pci_probe(struct pci_dev *pdev, instance++; if (rv != MTIP_FTL_REBUILD_MAGIC) set_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag); + else + rv = 0; /* device in rebuild state, return 0 from probe */ goto done; block_initialize_err: -- cgit v1.1 From 0caff00390db41c98976e65f2ebc3eeaa4861358 Mon Sep 17 00:00:00 2001 From: Asai Thambi S P Date: Wed, 3 Apr 2013 19:56:21 +0530 Subject: mtip32xx: Add debugfs entry device_status This patch adds a new debugfs entry 'device_status' in /sys/kernel/debug/rssd. The value of this entry shows devices online and those in the process of removing. Signed-off-by: Sam Bradshaw Signed-off-by: Asai Thambi S P Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 148 ++++++++++++++++++++++++++++++++++++-- drivers/block/mtip32xx/mtip32xx.h | 18 +++-- 2 files changed, 154 insertions(+), 12 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index ce4e47d..8517af8 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -81,12 +81,17 @@ /* Device instance number, incremented each time a device is probed. */ static int instance; +struct list_head online_list; +struct list_head removing_list; +spinlock_t dev_lock; + /* * Global variable used to hold the major block device number * allocated in mtip_init(). */ static int mtip_major; static struct dentry *dfs_parent; +static struct dentry *dfs_device_status; static u32 cpu_use[NR_CPUS]; @@ -2707,6 +2712,100 @@ static ssize_t mtip_hw_show_status(struct device *dev, static DEVICE_ATTR(status, S_IRUGO, mtip_hw_show_status, NULL); +/* debugsfs entries */ + +static ssize_t show_device_status(struct device_driver *drv, char *buf) +{ + int size = 0; + struct driver_data *dd, *tmp; + unsigned long flags; + char id_buf[42]; + u16 status = 0; + + spin_lock_irqsave(&dev_lock, flags); + size += sprintf(&buf[size], "Devices Present:\n"); + list_for_each_entry_safe(dd, tmp, &online_list, online_list) { + if (dd && dd->pdev) { + if (dd->port && + dd->port->identify && + dd->port->identify_valid) { + strlcpy(id_buf, + (char *) (dd->port->identify + 10), 21); + status = *(dd->port->identify + 141); + } else { + memset(id_buf, 0, 42); + status = 0; + } + + if (dd->port && + test_bit(MTIP_PF_REBUILD_BIT, &dd->port->flags)) { + size += sprintf(&buf[size], + " device %s %s (ftl rebuild %d %%)\n", + dev_name(&dd->pdev->dev), + id_buf, + status); + } else { + size += sprintf(&buf[size], + " device %s %s\n", + dev_name(&dd->pdev->dev), + id_buf); + } + } + } + + size += sprintf(&buf[size], "Devices Being Removed:\n"); + list_for_each_entry_safe(dd, tmp, &removing_list, remove_list) { + if (dd && dd->pdev) { + if (dd->port && + dd->port->identify && + dd->port->identify_valid) { + strlcpy(id_buf, + (char *) (dd->port->identify+10), 21); + status = *(dd->port->identify + 141); + } else { + memset(id_buf, 0, 42); + status = 0; + } + + if (dd->port && + test_bit(MTIP_PF_REBUILD_BIT, &dd->port->flags)) { + size += sprintf(&buf[size], + " device %s %s (ftl rebuild %d %%)\n", + dev_name(&dd->pdev->dev), + id_buf, + status); + } else { + size += sprintf(&buf[size], + " device %s %s\n", + dev_name(&dd->pdev->dev), + id_buf); + } + } + } + spin_unlock_irqrestore(&dev_lock, flags); + + return size; +} + +static ssize_t mtip_hw_read_device_status(struct file *f, char __user *ubuf, + size_t len, loff_t *offset) +{ + int size = *offset; + char buf[MTIP_DFS_MAX_BUF_SIZE]; + + if (!len || *offset) + return 0; + + size += show_device_status(NULL, buf); + + *offset = size <= len ? size : len; + size = copy_to_user(ubuf, buf, *offset); + if (size) + return -EFAULT; + + return *offset; +} + static ssize_t mtip_hw_read_registers(struct file *f, char __user *ubuf, size_t len, loff_t *offset) { @@ -2801,6 +2900,13 @@ static ssize_t mtip_hw_read_flags(struct file *f, char __user *ubuf, return *offset; } +static const struct file_operations mtip_device_status_fops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = mtip_hw_read_device_status, + .llseek = no_llseek, +}; + static const struct file_operations mtip_regs_fops = { .owner = THIS_MODULE, .open = simple_open, @@ -4158,6 +4264,7 @@ static int mtip_pci_probe(struct pci_dev *pdev, const struct cpumask *node_mask; int cpu, i = 0, j = 0; int my_node = NUMA_NO_NODE; + unsigned long flags; /* Allocate memory for this devices private data. */ my_node = pcibus_to_node(pdev->bus); @@ -4215,6 +4322,9 @@ static int mtip_pci_probe(struct pci_dev *pdev, dd->pdev = pdev; dd->numa_node = my_node; + INIT_LIST_HEAD(&dd->online_list); + INIT_LIST_HEAD(&dd->remove_list); + memset(dd->workq_name, 0, 32); snprintf(dd->workq_name, 31, "mtipq%d", dd->instance); @@ -4304,6 +4414,12 @@ static int mtip_pci_probe(struct pci_dev *pdev, set_bit(MTIP_DDF_INIT_DONE_BIT, &dd->dd_flag); else rv = 0; /* device in rebuild state, return 0 from probe */ + + /* Add to online list even if in ftl rebuild */ + spin_lock_irqsave(&dev_lock, flags); + list_add(&dd->online_list, &online_list); + spin_unlock_irqrestore(&dev_lock, flags); + goto done; block_initialize_err: @@ -4337,9 +4453,15 @@ static void mtip_pci_remove(struct pci_dev *pdev) { struct driver_data *dd = pci_get_drvdata(pdev); int counter = 0; + unsigned long flags; set_bit(MTIP_DDF_REMOVE_PENDING_BIT, &dd->dd_flag); + spin_lock_irqsave(&dev_lock, flags); + list_del_init(&dd->online_list); + list_add(&dd->remove_list, &removing_list); + spin_unlock_irqrestore(&dev_lock, flags); + if (mtip_check_surprise_removal(pdev)) { while (!test_bit(MTIP_DDF_CLEANUP_BIT, &dd->dd_flag)) { counter++; @@ -4365,6 +4487,10 @@ static void mtip_pci_remove(struct pci_dev *pdev) pci_disable_msi(pdev); + spin_lock_irqsave(&dev_lock, flags); + list_del_init(&dd->remove_list); + spin_unlock_irqrestore(&dev_lock, flags); + kfree(dd); pcim_iounmap_regions(pdev, 1 << MTIP_ABAR); } @@ -4512,6 +4638,11 @@ static int __init mtip_init(void) pr_info(MTIP_DRV_NAME " Version " MTIP_DRV_VERSION "\n"); + spin_lock_init(&dev_lock); + + INIT_LIST_HEAD(&online_list); + INIT_LIST_HEAD(&removing_list); + /* Allocate a major block device number to use with this driver. */ error = register_blkdev(0, MTIP_DRV_NAME); if (error <= 0) { @@ -4521,11 +4652,18 @@ static int __init mtip_init(void) } mtip_major = error; - if (!dfs_parent) { - dfs_parent = debugfs_create_dir("rssd", NULL); - if (IS_ERR_OR_NULL(dfs_parent)) { - pr_warn("Error creating debugfs parent\n"); - dfs_parent = NULL; + dfs_parent = debugfs_create_dir("rssd", NULL); + if (IS_ERR_OR_NULL(dfs_parent)) { + pr_warn("Error creating debugfs parent\n"); + dfs_parent = NULL; + } + if (dfs_parent) { + dfs_device_status = debugfs_create_file("device_status", + S_IRUGO, dfs_parent, NULL, + &mtip_device_status_fops); + if (IS_ERR_OR_NULL(dfs_device_status)) { + pr_err("Error creating device_status node\n"); + dfs_device_status = NULL; } } diff --git a/drivers/block/mtip32xx/mtip32xx.h b/drivers/block/mtip32xx/mtip32xx.h index 3bffff5..8e8334c 100644 --- a/drivers/block/mtip32xx/mtip32xx.h +++ b/drivers/block/mtip32xx/mtip32xx.h @@ -129,9 +129,9 @@ enum { MTIP_PF_EH_ACTIVE_BIT = 1, /* error handling */ MTIP_PF_SE_ACTIVE_BIT = 2, /* secure erase */ MTIP_PF_DM_ACTIVE_BIT = 3, /* download microcde */ - MTIP_PF_PAUSE_IO = ((1 << MTIP_PF_IC_ACTIVE_BIT) | \ - (1 << MTIP_PF_EH_ACTIVE_BIT) | \ - (1 << MTIP_PF_SE_ACTIVE_BIT) | \ + MTIP_PF_PAUSE_IO = ((1 << MTIP_PF_IC_ACTIVE_BIT) | + (1 << MTIP_PF_EH_ACTIVE_BIT) | + (1 << MTIP_PF_SE_ACTIVE_BIT) | (1 << MTIP_PF_DM_ACTIVE_BIT)), MTIP_PF_SVC_THD_ACTIVE_BIT = 4, @@ -144,9 +144,9 @@ enum { MTIP_DDF_REMOVE_PENDING_BIT = 1, MTIP_DDF_OVER_TEMP_BIT = 2, MTIP_DDF_WRITE_PROTECT_BIT = 3, - MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) | \ - (1 << MTIP_DDF_SEC_LOCK_BIT) | \ - (1 << MTIP_DDF_OVER_TEMP_BIT) | \ + MTIP_DDF_STOP_IO = ((1 << MTIP_DDF_REMOVE_PENDING_BIT) | + (1 << MTIP_DDF_SEC_LOCK_BIT) | + (1 << MTIP_DDF_OVER_TEMP_BIT) | (1 << MTIP_DDF_WRITE_PROTECT_BIT)), MTIP_DDF_CLEANUP_BIT = 5, @@ -180,7 +180,7 @@ struct mtip_work { #define MTIP_TRIM_TIMEOUT_MS 240000 #define MTIP_MAX_TRIM_ENTRIES 8 -#define MTIP_MAX_TRIM_ENTRY_LEN 0xfff8 +#define MTIP_MAX_TRIM_ENTRY_LEN 0xfff8 struct mtip_trim_entry { u32 lba; /* starting lba of region */ @@ -501,6 +501,10 @@ struct driver_data { atomic_t irq_workers_active; int isr_binding; + + struct list_head online_list; /* linkage for online list */ + + struct list_head remove_list; /* linkage for removing list */ }; #endif -- cgit v1.1 From 1f66396682a0be92e1c141bff4b006d7654832e1 Mon Sep 17 00:00:00 2001 From: Alexey Pelykh Date: Wed, 3 Apr 2013 14:31:46 -0400 Subject: OMAP/serial: Revert bad fix of Rx FIFO threshold granularity Partially reverts 1776fd059c40907297d6c26c51876575d63fd9e2 that introduced regression reported by Paul Walmsley. This commit restores setting granularity in SCR register and adds note about comments below being inconsistent with actual code. Signed-off-by: Alexey Pelykh Tested-by: Paul Walmsley Cc: Kevin Hilman Cc: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/omap-serial.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 4dc4140..30d4f7a 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -886,6 +886,17 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, serial_out(up, UART_MCR, up->mcr | UART_MCR_TCRTLR); /* FIFO ENABLE, DMA MODE */ + up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; + /* + * NOTE: Setting OMAP_UART_SCR_RX_TRIG_GRANU1_MASK + * sets Enables the granularity of 1 for TRIGGER RX + * level. Along with setting RX FIFO trigger level + * to 1 (as noted below, 16 characters) and TLR[3:0] + * to zero this will result RX FIFO threshold level + * to 1 character, instead of 16 as noted in comment + * below. + */ + /* Set receive FIFO threshold to 16 characters and * transmit FIFO threshold to 16 spaces */ -- cgit v1.1 From d8668fcb0b257d9fdcfbe5c172a99b8d85e1cd82 Mon Sep 17 00:00:00 2001 From: Shan Hai Date: Mon, 18 Mar 2013 10:30:43 +0800 Subject: libata: Use integer return value for atapi_command_packet_set The function returns type of ATAPI drives so it should return integer value. The commit 4dce8ba94c7 (libata: Use 'bool' return value for ata_id_XXX) since v2.6.39 changed the type of return value from int to bool, the change would cause all of the ATAPI class drives to be treated as TYPE_TAPE and the max_sectors of the drives to be set to 65535 because of the commit f8d8e5799b7(libata: increase 128 KB / cmd limit for ATAPI tape drives), for the function would return true for all ATAPI class drives and the TYPE_TAPE is defined as 0x01. Cc: stable@vger.kernel.org Signed-off-by: Shan Hai Signed-off-by: Jeff Garzik --- include/linux/ata.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/ata.h b/include/linux/ata.h index 8f7a3d6..ee0bd95 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -954,7 +954,7 @@ static inline int atapi_cdb_len(const u16 *dev_id) } } -static inline bool atapi_command_packet_set(const u16 *dev_id) +static inline int atapi_command_packet_set(const u16 *dev_id) { return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; } -- cgit v1.1 From a32450e127fc6e5ca6d958ceb3cfea4d30a00846 Mon Sep 17 00:00:00 2001 From: Shan Hai Date: Mon, 18 Mar 2013 10:30:44 +0800 Subject: libata: Set max sector to 65535 for Slimtype DVD A DS8A8SH drive The Slimtype DVD A DS8A8SH drive locks up when max sector is smaller than 65535, and the blow backtrace is observed on locking up: INFO: task flush-8:32:1130 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. flush-8:32 D ffffffff8180cf60 0 1130 2 0x00000000 ffff880273aef618 0000000000000046 0000000000000005 ffff880273aee000 ffff880273aee000 ffff880273aeffd8 ffff880273aee010 ffff880273aee000 ffff880273aeffd8 ffff880273aee000 ffff88026e842ea0 ffff880274a10000 Call Trace: [] schedule+0x5d/0x70 [] io_schedule+0x8c/0xd0 [] get_request+0x731/0x7d0 [] ? cfq_allow_merge+0x50/0x90 [] ? wake_up_bit+0x40/0x40 [] ? bio_attempt_back_merge+0x33/0x110 [] blk_queue_bio+0x23a/0x3f0 [] generic_make_request+0xc6/0x120 [] submit_bio+0x138/0x160 [] ? bio_alloc_bioset+0x96/0x120 [] submit_bh+0x1f1/0x220 [] __block_write_full_page+0x228/0x340 [] ? attach_nobh_buffers+0xc0/0xc0 [] ? I_BDEV+0x10/0x10 [] ? I_BDEV+0x10/0x10 [] block_write_full_page_endio+0xe6/0x100 [] block_write_full_page+0x15/0x20 [] blkdev_writepage+0x18/0x20 [] __writepage+0x17/0x40 [] write_cache_pages+0x34a/0x4a0 [] ? set_page_dirty+0x70/0x70 [] generic_writepages+0x51/0x80 [] do_writepages+0x20/0x50 [] __writeback_single_inode+0xa6/0x2b0 [] writeback_sb_inodes+0x311/0x4d0 [] __writeback_inodes_wb+0x86/0xd0 [] wb_writeback+0x1a3/0x330 [] ? _raw_spin_lock_irqsave+0x3f/0x50 [] ? get_nr_inodes+0x52/0x70 [] wb_do_writeback+0x1dc/0x260 [] ? schedule_timeout+0x204/0x240 [] bdi_writeback_thread+0x102/0x2b0 [] ? wb_do_writeback+0x260/0x260 [] kthread+0xc0/0xd0 [] ? kthread_worker_fn+0x1b0/0x1b0 [] ret_from_fork+0x7c/0xb0 [] ? kthread_worker_fn+0x1b0/0x1b0 The above trace was triggered by "dd if=/dev/zero of=/dev/sr0 bs=2048 count=32768" It was previously working by accident, since another bug introduced by 4dce8ba94c7 (libata: Use 'bool' return value for ata_id_XXX) caused all drives to use maxsect=65535. Cc: stable@vger.kernel.org Signed-off-by: Shan Hai Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 4 ++++ include/linux/libata.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 497adea..0075944 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2439,6 +2439,9 @@ int ata_dev_configure(struct ata_device *dev) dev->max_sectors = min_t(unsigned int, ATA_MAX_SECTORS_128, dev->max_sectors); + if (dev->horkage & ATA_HORKAGE_MAX_SEC_LBA48) + dev->max_sectors = ATA_MAX_SECTORS_LBA48; + if (ap->ops->dev_config) ap->ops->dev_config(dev); @@ -4100,6 +4103,7 @@ static const struct ata_blacklist_entry ata_device_blacklist [] = { /* Weird ATAPI devices */ { "TORiSAN DVD-ROM DRD-N216", NULL, ATA_HORKAGE_MAX_SEC_128 }, { "QUANTUM DAT DAT72-000", NULL, ATA_HORKAGE_ATAPI_MOD16_DMA }, + { "Slimtype DVD A DS8A8SH", NULL, ATA_HORKAGE_MAX_SEC_LBA48 }, /* Devices we expect to fail diagnostics */ diff --git a/include/linux/libata.h b/include/linux/libata.h index 91c9d10..eae7a05 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -398,6 +398,7 @@ enum { ATA_HORKAGE_NOSETXFER = (1 << 14), /* skip SETXFER, SATA only */ ATA_HORKAGE_BROKEN_FPDMA_AA = (1 << 15), /* skip AA */ ATA_HORKAGE_DUMP_ID = (1 << 16), /* dump IDENTIFY data */ + ATA_HORKAGE_MAX_SEC_LBA48 = (1 << 17), /* Set max sects to 65535 */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ -- cgit v1.1 From b55f84e2d527182e7c611d466cd0bb6ddce201de Mon Sep 17 00:00:00 2001 From: Youquan Song Date: Wed, 6 Mar 2013 10:49:05 -0500 Subject: ata_piix: Fix DVD not dectected at some Haswell platforms There is a quirk patch 5e5a4f5d5a08c9c504fe956391ac3dae2c66556d "ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2)" fixing the 4 ports IDE controller 32bit PIO mode. We've hit a problem with DVD not recognized on Haswell Desktop platform which includes Lynx Point 2-port SATA controller. This quirk patch disables 32bit PIO on this controller in IDE mode. v2: Change spelling error in statememnt pointed by Sergei Shtylyov. v3: Change comment statememnt and spliting line over 80 characters pointed by Libor Pechacek and also rebase the patch against 3.8-rc7 kernel. Tested-by: Lee, Chun-Yi Signed-off-by: Youquan Song Cc: stable@vger.kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/ata_piix.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c index ffdd32d..2f48123 100644 --- a/drivers/ata/ata_piix.c +++ b/drivers/ata/ata_piix.c @@ -150,6 +150,7 @@ enum piix_controller_ids { tolapai_sata, piix_pata_vmw, /* PIIX4 for VMware, spurious DMA_ERR */ ich8_sata_snb, + ich8_2port_sata_snb, }; struct piix_map_db { @@ -304,7 +305,7 @@ static const struct pci_device_id piix_pci_tbl[] = { /* SATA Controller IDE (Lynx Point) */ { 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb }, /* SATA Controller IDE (Lynx Point) */ - { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, + { 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb }, /* SATA Controller IDE (Lynx Point) */ { 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata }, /* SATA Controller IDE (Lynx Point-LP) */ @@ -439,6 +440,7 @@ static const struct piix_map_db *piix_map_db_table[] = { [ich8m_apple_sata] = &ich8m_apple_map_db, [tolapai_sata] = &tolapai_map_db, [ich8_sata_snb] = &ich8_map_db, + [ich8_2port_sata_snb] = &ich8_2port_map_db, }; static struct pci_bits piix_enable_bits[] = { @@ -1242,6 +1244,16 @@ static struct ata_port_info piix_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &piix_sata_ops, }, + + [ich8_2port_sata_snb] = + { + .flags = PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR + | PIIX_FLAG_PIO16, + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA6, + .port_ops = &piix_sata_ops, + }, }; #define AHCI_PCI_BAR 5 -- cgit v1.1 From 8e725c7f8a60feaa88edacd4dee2c754d5ae7706 Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Fri, 29 Mar 2013 11:54:55 +0000 Subject: libata: fix DMA to stack in reading devslp_timing parameters Commit 803739d25c2343da6d2f95eebdcbc08bf67097d4 ("[libata] replace sata_settings with devslp_timing"), which was also Cc: stable, used a stack buffer to receive data from ata_read_log_page(), which triggers the following warning: ahci 0000:00:1f.2: DMA-API: device driver maps memory fromstack [addr=ffff880140469948] Fix this by using ap->sector_buf instead of a stack buffer. Signed-off-by: David Woodhouse Cc: stable@kernel.org Signed-off-by: Jeff Garzik --- drivers/ata/libata-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 0075944..63c743b 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2329,7 +2329,7 @@ int ata_dev_configure(struct ata_device *dev) * from SATA Settings page of Identify Device Data Log. */ if (ata_id_has_devslp(dev->id)) { - u8 sata_setting[ATA_SECT_SIZE]; + u8 *sata_setting = ap->sector_buf; int i, j; dev->flags |= ATA_DFLAG_DEVSLP; -- cgit v1.1 From 6d3bfc7be6f80d0c6ee6800d58d573343bf6e260 Mon Sep 17 00:00:00 2001 From: Krzysztof Mazur Date: Wed, 27 Mar 2013 13:51:14 +0100 Subject: [libata] Fix HDIO_DRIVE_* ioctl() Linux 3.9 regression On Mon, Mar 25, 2013 at 06:26:50PM +0100, Ronald wrote: > In reply to [1]: I have the same issue. Git bisect took 50+ rebuilds xD > > Smartd does not work anymore since 84a9a8cd9 ([libata] Set proper SK > when CK_COND is set.). > [1] http://www.spinics.net/lists/linux-ide/msg45268.html It seems that the SAM_STAT_CHECK_CONDITION is not cleared causing -EIO, because that patch modified sensebuf and the check for clearing SAM_STAT_CHECK_CONDITION is no longer valid. Fix that. Signed-off-by: Jeff Garzik --- drivers/ata/libata-scsi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 318b413..ff44787 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -532,8 +532,8 @@ int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) struct scsi_sense_hdr sshdr; scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, &sshdr); - if (sshdr.sense_key == 0 && - sshdr.asc == 0 && sshdr.ascq == 0) + if (sshdr.sense_key == RECOVERED_ERROR && + sshdr.asc == 0 && sshdr.ascq == 0x1d) cmd_result &= ~SAM_STAT_CHECK_CONDITION; } @@ -618,8 +618,8 @@ int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) struct scsi_sense_hdr sshdr; scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, &sshdr); - if (sshdr.sense_key == 0 && - sshdr.asc == 0 && sshdr.ascq == 0) + if (sshdr.sense_key == RECOVERED_ERROR && + sshdr.asc == 0 && sshdr.ascq == 0x1d) cmd_result &= ~SAM_STAT_CHECK_CONDITION; } -- cgit v1.1 From c66bb3f075cfe2d17b2427e96e043622db02759c Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Thu, 4 Apr 2013 09:03:41 +0200 Subject: mtip32xx: fix two smatch warnings Dan reports: New smatch warnings: drivers/block/mtip32xx/mtip32xx.c:2728 show_device_status() warn: variable dereferenced before check 'dd' (see line 2727) drivers/block/mtip32xx/mtip32xx.c:2758 show_device_status() warn: variable dereferenced before check 'dd' (see line 2757) which are checking if dd == NULL, in a list_for_each_entry() type loop. Get rid of the check, dd can never be NULL here. Reported-by: Dan Carpenter Signed-off-by: Jens Axboe --- drivers/block/mtip32xx/mtip32xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c index 8517af8..32c6780 100644 --- a/drivers/block/mtip32xx/mtip32xx.c +++ b/drivers/block/mtip32xx/mtip32xx.c @@ -2725,7 +2725,7 @@ static ssize_t show_device_status(struct device_driver *drv, char *buf) spin_lock_irqsave(&dev_lock, flags); size += sprintf(&buf[size], "Devices Present:\n"); list_for_each_entry_safe(dd, tmp, &online_list, online_list) { - if (dd && dd->pdev) { + if (dd->pdev) { if (dd->port && dd->port->identify && dd->port->identify_valid) { @@ -2755,7 +2755,7 @@ static ssize_t show_device_status(struct device_driver *drv, char *buf) size += sprintf(&buf[size], "Devices Being Removed:\n"); list_for_each_entry_safe(dd, tmp, &removing_list, remove_list) { - if (dd && dd->pdev) { + if (dd->pdev) { if (dd->port && dd->port->identify && dd->port->identify_valid) { -- cgit v1.1 From b39599b7cb8f295205b04827ff82e3afec687cde Mon Sep 17 00:00:00 2001 From: Suman Anna Date: Wed, 6 Mar 2013 16:56:48 -0600 Subject: remoteproc: fix the error check for idr_alloc The new idr_alloc interface returns the allocated id back on success, so fix the error path to check for negative values. This was missed out in the newer idr interface adoption patch, 15fc611 "remoteproc: convert to idr_alloc()". Signed-off-by: Suman Anna Acked-by: Tejun Heo Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/remoteproc_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index 29387df4..fb0fb34 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -217,7 +217,7 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i) * TODO: support predefined notifyids (via resource table) */ ret = idr_alloc(&rproc->notifyids, rvring, 0, 0, GFP_KERNEL); - if (ret) { + if (ret < 0) { dev_err(dev, "idr_alloc failed: %d\n", ret); dma_free_coherent(dev->parent, size, va, dma); return ret; -- cgit v1.1 From 1cd425b660bd5b4f41b9175b0b7bf3828ce88144 Mon Sep 17 00:00:00 2001 From: Dmitry Tarnyagin Date: Sun, 10 Feb 2013 12:39:04 +0100 Subject: remoteproc/ste: fix memory leak on shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes coherent memory leakage, caused by non-deallocated firmware image chunk. Cc: stable@vger.kernel.org Signed-off-by: Dmitry Tarnyagin Signed-off-by: Sjur Brændeland Acked-by: Ido Yariv [slightly edit subject and commit log] Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/ste_modem_rproc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/ste_modem_rproc.c b/drivers/remoteproc/ste_modem_rproc.c index a7743c0..fb95c42 100644 --- a/drivers/remoteproc/ste_modem_rproc.c +++ b/drivers/remoteproc/ste_modem_rproc.c @@ -240,6 +240,8 @@ static int sproc_drv_remove(struct platform_device *pdev) /* Unregister as remoteproc device */ rproc_del(sproc->rproc); + dma_free_coherent(sproc->rproc->dev.parent, SPROC_FW_SIZE, + sproc->fw_addr, sproc->fw_dma_addr); rproc_put(sproc->rproc); mdev->drv_data = NULL; @@ -297,10 +299,13 @@ static int sproc_probe(struct platform_device *pdev) /* Register as a remoteproc device */ err = rproc_add(rproc); if (err) - goto free_rproc; + goto free_mem; return 0; +free_mem: + dma_free_coherent(rproc->dev.parent, SPROC_FW_SIZE, + sproc->fw_addr, sproc->fw_dma_addr); free_rproc: /* Reset device data upon error */ mdev->drv_data = NULL; -- cgit v1.1 From cde42e076c1cdd69a1f955d66ff6596bad3d2105 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sjur=20Br=C3=A6ndeland?= Date: Thu, 21 Feb 2013 18:15:32 +0100 Subject: remoteproc: fix error path of handle_vdev MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Remove the vdev entry from the list before freeing it, otherwise rproc->vdevs will explode. Cc: stable@vger.kernel.org Signed-off-by: Sjur Brændeland Acked-by: Ido Yariv [edit subject, minor commit log edit, cc stable] Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/remoteproc_core.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index fb0fb34..8edb4ae 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -366,10 +366,12 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc, /* it is now safe to add the virtio device */ ret = rproc_add_virtio_dev(rvdev, rsc->id); if (ret) - goto free_rvdev; + goto remove_rvdev; return 0; +remove_rvdev: + list_del(&rvdev->node); free_rvdev: kfree(rvdev); return ret; -- cgit v1.1 From d47cbd5bcee7c7a08fc0283dda465375fa1b1fda Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 5 Apr 2013 14:06:35 +0200 Subject: crypto: ux500 - add missing comma Commit 4f31f5b19eb0418a847b989abc9ac22af1991fe2 "PM / crypto / ux500: Use struct dev_pm_ops for power management" add a new line to the driver struct but missed to add a trailing comma, causing build errors when crypto is selected. This adds the missing comma. This was not noticed until now because the crypto block is not in the ux500 defconfig. A separate patch will be submitted to fix this. Cc: # 3.8.x Cc: Rafael J. Wysocki Cc: Magnus Myrstedt Signed-off-by: Linus Walleij Signed-off-by: Herbert Xu --- drivers/crypto/ux500/cryp/cryp_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/ux500/cryp/cryp_core.c b/drivers/crypto/ux500/cryp/cryp_core.c index 8bc5fef..22c9063 100644 --- a/drivers/crypto/ux500/cryp/cryp_core.c +++ b/drivers/crypto/ux500/cryp/cryp_core.c @@ -1750,7 +1750,7 @@ static struct platform_driver cryp_driver = { .shutdown = ux500_cryp_shutdown, .driver = { .owner = THIS_MODULE, - .name = "cryp1" + .name = "cryp1", .pm = &ux500_cryp_pm, } }; -- cgit v1.1 From c10b90d85a5126d25c89cbaa50dc9fdd1c4d001a Mon Sep 17 00:00:00 2001 From: Li Fei Date: Fri, 5 Apr 2013 21:20:36 +0800 Subject: hwspinlock: fix __hwspin_lock_request error path 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_noidle in such case. In __hwspin_lock_request, module_put is also called before return in pm_runtime_get_sync failed case. Cc: stable@vger.kernel.org Signed-off-by Liu Chuansheng Signed-off-by: Li Fei [edit commit log] Signed-off-by: Ohad Ben-Cohen --- drivers/hwspinlock/hwspinlock_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/hwspinlock/hwspinlock_core.c b/drivers/hwspinlock/hwspinlock_core.c index db713c0..461a0d7 100644 --- a/drivers/hwspinlock/hwspinlock_core.c +++ b/drivers/hwspinlock/hwspinlock_core.c @@ -416,6 +416,8 @@ static int __hwspin_lock_request(struct hwspinlock *hwlock) ret = pm_runtime_get_sync(dev); if (ret < 0) { dev_err(dev, "%s: can't power on device\n", __func__); + pm_runtime_put_noidle(dev); + module_put(dev->driver->owner); return ret; } -- cgit v1.1 From a58e0be6f6b3eb2079b0b8fedc9df6fa86869f1e Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Fri, 22 Mar 2013 12:52:59 -0400 Subject: SUNRPC: Remove extra xprt_put() While testing error cases where rpc_new_client() fails, I saw some oopses. If rpc_new_client() fails, it already invokes xprt_put(). Thus __rpc_clone_client() does not need to invoke it again. Introduced by commit 1b63a751 "SUNRPC: Refactor rpc_clone_client()" Fri Sep 14, 2012. Signed-off-by: Chuck Lever Cc: stable@vger.kernel.org [>=3.7] Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index dcc446e..9df26b7 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -512,7 +512,7 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args, new = rpc_new_client(args, xprt); if (IS_ERR(new)) { err = PTR_ERR(new); - goto out_put; + goto out_err; } atomic_inc(&clnt->cl_count); @@ -525,8 +525,6 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args, new->cl_chatty = clnt->cl_chatty; return new; -out_put: - xprt_put(xprt); out_err: dprintk("RPC: %s: returned error %d\n", __func__, err); return ERR_PTR(err); -- cgit v1.1 From b193d59a4863ea670872d76dc99231ddeb598625 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Thu, 4 Apr 2013 15:55:00 -0400 Subject: NFSv4: Fix a memory leak in nfs4_discover_server_trunking When we assign a new rpc_client to clp->cl_rpcclient, we need to destroy the old one. Signed-off-by: Trond Myklebust Cc: Chuck Lever Cc: stable@vger.kernel.org [>=3.7] --- fs/nfs/nfs4state.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 6ace365..d41a351 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -1886,7 +1886,13 @@ again: status = PTR_ERR(clnt); break; } - clp->cl_rpcclient = clnt; + /* Note: this is safe because we haven't yet marked the + * client as ready, so we are the only user of + * clp->cl_rpcclient + */ + clnt = xchg(&clp->cl_rpcclient, clnt); + rpc_shutdown_client(clnt); + clnt = clp->cl_rpcclient; goto again; case -NFS4ERR_MINOR_VERS_MISMATCH: -- cgit v1.1 From 7b1f1fd1842e6ede25183c267ae733a7f67f00bc Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 5 Apr 2013 16:11:11 -0400 Subject: NFSv4/4.1: Fix bugs in nfs4[01]_walk_client_list It is unsafe to use list_for_each_entry_safe() here, because when we drop the nn->nfs_client_lock, we pin the _current_ list entry and ensure that it stays in the list, but we don't do the same for the _next_ list entry. Use of list_for_each_entry() is therefore the correct thing to do. Also fix the refcounting in nfs41_walk_client_list(). Finally, ensure that the nfs_client has finished being initialised and, in the case of NFSv4.1, that the session is set up. Signed-off-by: Trond Myklebust Cc: Chuck Lever Cc: Bryan Schumaker Cc: stable@vger.kernel.org [>= 3.7] --- fs/nfs/nfs4client.c | 44 ++++++++++++++++++++++++++++---------------- 1 file changed, 28 insertions(+), 16 deletions(-) diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index ac4fc9a..c7b346f 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -300,7 +300,7 @@ int nfs40_walk_client_list(struct nfs_client *new, struct rpc_cred *cred) { struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id); - struct nfs_client *pos, *n, *prev = NULL; + struct nfs_client *pos, *prev = NULL; struct nfs4_setclientid_res clid = { .clientid = new->cl_clientid, .confirm = new->cl_confirm, @@ -308,10 +308,23 @@ int nfs40_walk_client_list(struct nfs_client *new, int status = -NFS4ERR_STALE_CLIENTID; spin_lock(&nn->nfs_client_lock); - list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) { + list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) { /* If "pos" isn't marked ready, we can't trust the * remaining fields in "pos" */ - if (pos->cl_cons_state < NFS_CS_READY) + if (pos->cl_cons_state > NFS_CS_READY) { + atomic_inc(&pos->cl_count); + spin_unlock(&nn->nfs_client_lock); + + if (prev) + nfs_put_client(prev); + prev = pos; + + status = nfs_wait_client_init_complete(pos); + spin_lock(&nn->nfs_client_lock); + if (status < 0) + continue; + } + if (pos->cl_cons_state != NFS_CS_READY) continue; if (pos->rpc_ops != new->rpc_ops) @@ -423,16 +436,16 @@ int nfs41_walk_client_list(struct nfs_client *new, struct rpc_cred *cred) { struct nfs_net *nn = net_generic(new->cl_net, nfs_net_id); - struct nfs_client *pos, *n, *prev = NULL; + struct nfs_client *pos, *prev = NULL; int status = -NFS4ERR_STALE_CLIENTID; spin_lock(&nn->nfs_client_lock); - list_for_each_entry_safe(pos, n, &nn->nfs_client_list, cl_share_link) { + list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) { /* If "pos" isn't marked ready, we can't trust the * remaining fields in "pos", especially the client * ID and serverowner fields. Wait for CREATE_SESSION * to finish. */ - if (pos->cl_cons_state < NFS_CS_READY) { + if (pos->cl_cons_state > NFS_CS_READY) { atomic_inc(&pos->cl_count); spin_unlock(&nn->nfs_client_lock); @@ -440,18 +453,17 @@ int nfs41_walk_client_list(struct nfs_client *new, nfs_put_client(prev); prev = pos; - nfs4_schedule_lease_recovery(pos); status = nfs_wait_client_init_complete(pos); - if (status < 0) { - nfs_put_client(pos); - spin_lock(&nn->nfs_client_lock); - continue; + if (status == 0) { + nfs4_schedule_lease_recovery(pos); + status = nfs4_wait_clnt_recover(pos); } - status = pos->cl_cons_state; spin_lock(&nn->nfs_client_lock); if (status < 0) continue; } + if (pos->cl_cons_state != NFS_CS_READY) + continue; if (pos->rpc_ops != new->rpc_ops) continue; @@ -469,17 +481,17 @@ int nfs41_walk_client_list(struct nfs_client *new, continue; atomic_inc(&pos->cl_count); - spin_unlock(&nn->nfs_client_lock); + *result = pos; dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n", __func__, pos, atomic_read(&pos->cl_count)); - - *result = pos; - return 0; + break; } /* No matching nfs_client found. */ spin_unlock(&nn->nfs_client_lock); dprintk("NFS: <-- %s status = %d\n", __func__, status); + if (prev) + nfs_put_client(prev); return status; } #endif /* CONFIG_NFS_V4_1 */ -- cgit v1.1 From f05c124a70a4953a66acbd6d6c601ea1eb5d0fa7 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 5 Apr 2013 14:13:21 -0400 Subject: SUNRPC: Fix a potential memory leak in rpc_new_client If the call to rpciod_up() fails, we currently leak a reference to the struct rpc_xprt. As part of the fix, we also remove the redundant check for xprt!=NULL. This is already taken care of by the callers. Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 9df26b7..d5f35f1 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -304,10 +304,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru err = rpciod_up(); if (err) goto out_no_rpciod; - err = -EINVAL; - if (!xprt) - goto out_no_xprt; + err = -EINVAL; if (args->version >= program->nrvers) goto out_err; version = program->version[args->version]; @@ -382,10 +380,9 @@ out_no_principal: out_no_stats: kfree(clnt); out_err: - xprt_put(xprt); -out_no_xprt: rpciod_down(); out_no_rpciod: + xprt_put(xprt); return ERR_PTR(err); } -- cgit v1.1 From f19799f49d1a03f39d5e53fa1bf05db4820c86c2 Mon Sep 17 00:00:00 2001 From: "wenxiong@linux.vnet.ibm.com" Date: Wed, 27 Feb 2013 12:37:45 -0600 Subject: [SCSI] ipr: ipr_test_msi() fails when running with msi-x enabled adapter Loading ipr modules failed(-22) with msi-x enabled adapter. In ipr_test_msi(), We need to pass the first vector of msix vectors instead of using pdev->irq to request_irq() when adapter enables msix feature. Signed-off-by: Wen Xiong Acked-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ipr.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index f328089..fadf152 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -9349,7 +9349,10 @@ static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg); spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); - rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); + if (ioa_cfg->intr_flag == IPR_USE_MSIX) + rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg); + else + rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg); if (rc) { dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq); return rc; @@ -9371,7 +9374,10 @@ static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev) spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags); - free_irq(pdev->irq, ioa_cfg); + if (ioa_cfg->intr_flag == IPR_USE_MSIX) + free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg); + else + free_irq(pdev->irq, ioa_cfg); LEAVE; -- cgit v1.1 From 95c9f4d4da6c4e445a9dd58c8382356520ea91a0 Mon Sep 17 00:00:00 2001 From: John Gong Date: Wed, 6 Mar 2013 10:43:03 +0800 Subject: [SCSI] libsas: use right function to alloc smp response In fact the disc_resp buffer will be overwrite by smp response, so we never found this typo, correct it by using the right one. Signed-off-by: John Gong Signed-off-by: Jack Wang Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index aec2e0d..588affd 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -388,7 +388,7 @@ int sas_ex_phy_discover(struct domain_device *dev, int single) if (!disc_req) return -ENOMEM; - disc_resp = alloc_smp_req(DISCOVER_RESP_SIZE); + disc_resp = alloc_smp_resp(DISCOVER_RESP_SIZE); if (!disc_resp) { kfree(disc_req); return -ENOMEM; -- cgit v1.1 From 2b5bebccd282f2527d17ac90cf3ad0d486dd89d8 Mon Sep 17 00:00:00 2001 From: Joe Lawrence Date: Tue, 5 Mar 2013 10:57:56 -0500 Subject: [SCSI] st: Take additional queue ref in st_probe MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch fixes a reference count bug in the SCSI tape driver which can be reproduced with the following: * Boot with slub_debug=FZPU, tape drive attached * echo 1 > /sys/devices/... tape device pci path .../remove * Wait for device removal * echo 1 > /sys/kernel/slab/blkdev_queue/validate * Slub debug complains about corrupted poison pattern In commit 523e1d39 (block: make gendisk hold a reference to its queue) add_disk() and disk_release() were modified to get/put an additional reference on a disk queue to fix a reference counting discrepency between bdev release and SCSI device removal. The ST driver never calls add_disk(), so this commit introduced an extra kref put when the ST driver frees its struct gendisk. Attempts were made to fix this bug at the block level [1] but later abandoned due to floppy driver issues [2]. [1] https://lkml.org/lkml/2012/8/27/354 [2] https://lkml.org/lkml/2012/9/22/113 Signed-off-by: Joe Lawrence Tested-by: Ewan D. Milne Acked-by: Kai Mäkisara Signed-off-by: James Bottomley --- drivers/scsi/st.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c index 8697447..2a32036 100644 --- a/drivers/scsi/st.c +++ b/drivers/scsi/st.c @@ -4112,6 +4112,10 @@ static int st_probe(struct device *dev) tpnt->disk = disk; disk->private_data = &tpnt->driver; disk->queue = SDp->request_queue; + /* SCSI tape doesn't register this gendisk via add_disk(). Manually + * take queue reference that release_disk() expects. */ + if (!blk_get_queue(disk->queue)) + goto out_put_disk; tpnt->driver = &st_template; tpnt->device = SDp; @@ -4185,7 +4189,7 @@ static int st_probe(struct device *dev) idr_preload_end(); if (error < 0) { pr_warn("st: idr allocation failed: %d\n", error); - goto out_put_disk; + goto out_put_queue; } tpnt->index = error; sprintf(disk->disk_name, "st%d", tpnt->index); @@ -4211,6 +4215,8 @@ out_remove_devs: spin_lock(&st_index_lock); idr_remove(&st_index_idr, tpnt->index); spin_unlock(&st_index_lock); +out_put_queue: + blk_put_queue(disk->queue); out_put_disk: put_disk(disk); kfree(tpnt); -- cgit v1.1 From c4ee22a3708d54d8fb5ee8a23ca08e74abcaedfd Mon Sep 17 00:00:00 2001 From: Kleber Sacilotto de Souza Date: Thu, 14 Mar 2013 13:52:23 -0500 Subject: [SCSI] ipr: fix addition of abort command to HRRQ free queue The abort command issued by ipr_cancel_op() is being added to the wrong HRRQ free queue after the command returns. Fix it by using the HRRQ pointer in the ipr command struct itself. Signed-off-by: Kleber Sacilotto de Souza Signed-off-by: Wen Xiong Acked-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ipr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index fadf152..21e0a0a 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -5148,7 +5148,7 @@ static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd) ipr_trace; } - list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q); + list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); if (!ipr_is_naca_model(res)) res->needs_sync_complete = 1; -- cgit v1.1 From 9077a944bc3c8bea45a91dc2caa65e96ac4c5f87 Mon Sep 17 00:00:00 2001 From: "wenxiong@linux.vnet.ibm.com" Date: Thu, 14 Mar 2013 13:52:24 -0500 Subject: [SCSI] ipr: dlpar failed when adding an adapter back Reinitialize resource queue prior to freeing resource entries to ensure they are not referenced. This fixes an issue with target_destoy accessing memory after it was freed. Signed-off-by: Wen Xiong Acked-by: Brian King Signed-off-by: James Bottomley --- drivers/scsi/ipr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index 21e0a0a..2197b57 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -9728,6 +9728,7 @@ static void __ipr_remove(struct pci_dev *pdev) spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags); wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload); flush_work(&ioa_cfg->work_q); + INIT_LIST_HEAD(&ioa_cfg->used_res_q); spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags); spin_lock(&ipr_driver_lock); -- cgit v1.1 From e9f4f418076f7d08a73667472b5f74a02965221d Mon Sep 17 00:00:00 2001 From: Joe Carnuccio Date: Mon, 25 Mar 2013 02:21:36 -0400 Subject: [SCSI] Revert "qla2xxx: Add setting of driver version string for vendor application." The original patch was not covering all the adapters and firmwares. This commit reverts 3a11711ad00caebee07e262d188cea66f3473c38. Signed-off-by: Joe Carnuccio Signed-off-by: Saurav Kashyap Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_dbg.c | 1 + drivers/scsi/qla2xxx/qla_def.h | 1 - drivers/scsi/qla2xxx/qla_gbl.h | 3 --- drivers/scsi/qla2xxx/qla_init.c | 2 -- drivers/scsi/qla2xxx/qla_mbx.c | 58 ----------------------------------------- 5 files changed, 1 insertion(+), 64 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 1626de5..2bf0214 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -15,6 +15,7 @@ * | Mailbox commands | 0x115b | 0x111a-0x111b | * | | | 0x112c-0x112e | * | | | 0x113a | + * | | | 0x1155-0x1158 | * | Device Discovery | 0x2087 | 0x2020-0x2022, | * | | | 0x2016 | * | Queue Command and IO tracing | 0x3031 | 0x3006-0x300b | diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index c650991..65c5ff7 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -863,7 +863,6 @@ typedef struct { #define MBX_1 BIT_1 #define MBX_0 BIT_0 -#define RNID_TYPE_SET_VERSION 0x9 #define RNID_TYPE_ASIC_TEMP 0xC /* diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index eb3ca21..b310fa9 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -358,9 +358,6 @@ extern int qla2x00_disable_fce_trace(scsi_qla_host_t *, uint64_t *, uint64_t *); extern int -qla2x00_set_driver_version(scsi_qla_host_t *, char *); - -extern int qla2x00_read_sfp(scsi_qla_host_t *, dma_addr_t, uint8_t *, uint16_t, uint16_t, uint16_t, uint16_t); diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index edf4d14..09eae54 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -619,8 +619,6 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha) if (IS_QLA24XX_TYPE(ha) || IS_QLA25XX(ha)) qla24xx_read_fcp_prio_cfg(vha); - qla2x00_set_driver_version(vha, QLA2XXX_VERSION); - return (rval); } diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index 186dd59..43345af 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -3866,64 +3866,6 @@ qla81xx_restart_mpi_firmware(scsi_qla_host_t *vha) return rval; } -int -qla2x00_set_driver_version(scsi_qla_host_t *vha, char *version) -{ - int rval; - mbx_cmd_t mc; - mbx_cmd_t *mcp = &mc; - int len; - uint16_t dwlen; - uint8_t *str; - dma_addr_t str_dma; - struct qla_hw_data *ha = vha->hw; - - if (!IS_FWI2_CAPABLE(ha) || IS_QLA82XX(ha)) - return QLA_FUNCTION_FAILED; - - ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1155, - "Entered %s.\n", __func__); - - str = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL, &str_dma); - if (!str) { - ql_log(ql_log_warn, vha, 0x1156, - "Failed to allocate driver version param.\n"); - return QLA_MEMORY_ALLOC_FAILED; - } - - memcpy(str, "\x7\x3\x11\x0", 4); - dwlen = str[0]; - len = dwlen * sizeof(uint32_t) - 4; - memset(str + 4, 0, len); - if (len > strlen(version)) - len = strlen(version); - memcpy(str + 4, version, len); - - mcp->mb[0] = MBC_SET_RNID_PARAMS; - mcp->mb[1] = RNID_TYPE_SET_VERSION << 8 | dwlen; - mcp->mb[2] = MSW(LSD(str_dma)); - mcp->mb[3] = LSW(LSD(str_dma)); - mcp->mb[6] = MSW(MSD(str_dma)); - mcp->mb[7] = LSW(MSD(str_dma)); - mcp->out_mb = MBX_7|MBX_6|MBX_3|MBX_2|MBX_1|MBX_0; - mcp->in_mb = MBX_0; - mcp->tov = MBX_TOV_SECONDS; - mcp->flags = 0; - rval = qla2x00_mailbox_command(vha, mcp); - - if (rval != QLA_SUCCESS) { - ql_dbg(ql_dbg_mbx, vha, 0x1157, - "Failed=%x mb[0]=%x.\n", rval, mcp->mb[0]); - } else { - ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1158, - "Done %s.\n", __func__); - } - - dma_pool_free(ha->s_dma_pool, str, str_dma); - - return rval; -} - static int qla2x00_read_asic_temperature(scsi_qla_host_t *vha, uint16_t *temp) { -- cgit v1.1 From 00876ae85b47cdfe76aa08b1fffb27fd67425f53 Mon Sep 17 00:00:00 2001 From: Arun Easi Date: Mon, 25 Mar 2013 02:21:37 -0400 Subject: [SCSI] qla2xxx: Fix crash during firmware dump procedure. System crashes, in initiator mode operation, with qla2xxx_copy_atioqueues() in stack trace when firmware dump is attempted. Check for atio_q_length alone does not indicate if atio_ring is allocated, make explicit check of atio_ring to avoid the crash. Applicable to ISP24xx, ISP25xx, ISP81xx & ISP83xx line of HBAs. Signed-off-by: Arun Easi Signed-off-by: Saurav Kashyap Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_dbg.c | 2 +- drivers/scsi/qla2xxx/qla_init.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 2bf0214..fbc305f 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -402,7 +402,7 @@ qla2xxx_copy_atioqueues(struct qla_hw_data *ha, void *ptr, void *ring; } aq, *aqp; - if (!ha->tgt.atio_q_length) + if (!ha->tgt.atio_ring) return ptr; num_queues = 1; diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index 09eae54..b592033 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1397,7 +1397,7 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *vha) mq_size += ha->max_rsp_queues * (rsp->length * sizeof(response_t)); } - if (ha->tgt.atio_q_length) + if (ha->tgt.atio_ring) mq_size += ha->tgt.atio_q_length * sizeof(request_t); /* Allocate memory for Fibre Channel Event Buffer. */ if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha) && !IS_QLA83XX(ha)) -- cgit v1.1 From b03808fdbf98e41391efb732108a6d2fb4e30a76 Mon Sep 17 00:00:00 2001 From: Saurav Kashyap Date: Mon, 25 Mar 2013 02:21:38 -0400 Subject: [SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file. Signed-off-by: Giridhar Malavali Signed-off-by: Saurav Kashyap Signed-off-by: James Bottomley --- Documentation/scsi/LICENSE.qla2xxx | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/scsi/LICENSE.qla2xxx b/Documentation/scsi/LICENSE.qla2xxx index 27a91cf..5020b7b 100644 --- a/Documentation/scsi/LICENSE.qla2xxx +++ b/Documentation/scsi/LICENSE.qla2xxx @@ -1,4 +1,4 @@ -Copyright (c) 2003-2012 QLogic Corporation +Copyright (c) 2003-2013 QLogic Corporation QLogic Linux FC-FCoE Driver This program includes a device driver for Linux 3.x. -- cgit v1.1 From 4a9fa41bd404b8a572e4af7d2221e423bb729e52 Mon Sep 17 00:00:00 2001 From: Saurav Kashyap Date: Mon, 25 Mar 2013 02:21:39 -0400 Subject: [SCSI] qla2xxx: Remove debug code that msleeps for random duration. Signed-off-by: Giridhar Malavali Signed-off-by: Saurav Kashyap Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_attr.c | 5 ----- 1 file changed, 5 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index 1d82eef..b3db9dc 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1938,11 +1938,6 @@ qla24xx_vport_delete(struct fc_vport *fc_vport) "Timer for the VP[%d] has stopped\n", vha->vp_idx); } - /* No pending activities shall be there on the vha now */ - if (ql2xextended_error_logging & ql_dbg_user) - msleep(random32()%10); /* Just to see if something falls on - * the net we have placed below */ - BUG_ON(atomic_read(&vha->vref_count)); qla2x00_free_fcports(vha); -- cgit v1.1 From 231ff54e4cc4a6f1ef78fb4e1f94957bbb961aae Mon Sep 17 00:00:00 2001 From: Saurav Kashyap Date: Mon, 25 Mar 2013 02:21:40 -0400 Subject: [SCSI] qla2xxx: Update the driver version to 8.04.00.13-k. Signed-off-by: Giridhar Malavali Signed-off-by: Saurav Kashyap Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_version.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_version.h b/drivers/scsi/qla2xxx/qla_version.h index 2b6e478..ec54036 100644 --- a/drivers/scsi/qla2xxx/qla_version.h +++ b/drivers/scsi/qla2xxx/qla_version.h @@ -7,7 +7,7 @@ /* * Driver version */ -#define QLA2XXX_VERSION "8.04.00.08-k" +#define QLA2XXX_VERSION "8.04.00.13-k" #define QLA_DRIVER_MAJOR_VER 8 #define QLA_DRIVER_MINOR_VER 4 -- cgit v1.1 From 9d85b590057523c2bfe3bea2f62ba9e2701a62db Mon Sep 17 00:00:00 2001 From: Brian King Date: Mon, 1 Apr 2013 09:44:26 -0500 Subject: [SCSI] ibmvscsi: Fix slave_configure deadlock No locks should be held when calling scsi_adjust_queue_depth so drop the lock in slave_configure prior to calling it. Signed-off-by: Brian King Acked-by: Robert Jennings Signed-off-by: James Bottomley --- drivers/scsi/ibmvscsi/ibmvscsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c index a044f59..d0fa4b6 100644 --- a/drivers/scsi/ibmvscsi/ibmvscsi.c +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c @@ -1899,8 +1899,8 @@ static int ibmvscsi_slave_configure(struct scsi_device *sdev) sdev->allow_restart = 1; blk_queue_rq_timeout(sdev->request_queue, 120 * HZ); } - scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun); spin_unlock_irqrestore(shost->host_lock, lock_flags); + scsi_adjust_queue_depth(sdev, 0, shost->cmd_per_lun); return 0; } -- cgit v1.1 From d4a2618fa77b5e58ec15342972bd3505a1c3f551 Mon Sep 17 00:00:00 2001 From: Lukasz Dorau Date: Wed, 3 Apr 2013 10:27:17 +0200 Subject: [SCSI] libsas: fix handling vacant phy in sas_set_ex_phy() If a result of the SMP discover function is PHY VACANT, the content of discover response structure (dr) is not valid. It sometimes happens that dr->attached_sas_addr can contain even SAS address of other phy. In such case an invalid phy is created, what causes NULL pointer dereference during destruction of expander's phys. So if a result of SMP function is PHY VACANT, the content of discover response structure (dr) must not be copied to phy structure. This patch fixes the following bug: BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 IP: [] sysfs_find_dirent+0x12/0x90 Call Trace: [] sysfs_get_dirent+0x35/0x80 [] sysfs_unmerge_group+0x1e/0xb0 [] dpm_sysfs_remove+0x24/0x90 [] device_del+0x44/0x1d0 [] sas_rphy_delete+0x9/0x20 [scsi_transport_sas] [] sas_destruct_devices+0xe6/0x110 [libsas] [] process_one_work+0x16c/0x350 [] worker_thread+0x17a/0x410 [] kthread+0x96/0xa0 [] kernel_thread_helper+0x4/0x10 Signed-off-by: Lukasz Dorau Signed-off-by: Pawel Baldysiak Reviewed-by: Maciej Patelczyk Cc: Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 588affd..55cbd01 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -235,6 +235,17 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) linkrate = phy->linkrate; memcpy(sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE); + /* Handle vacant phy - rest of dr data is not valid so skip it */ + if (phy->phy_state == PHY_VACANT) { + memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE); + phy->attached_dev_type = NO_DEVICE; + if (!test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state)) { + phy->phy_id = phy_id; + goto skip; + } else + goto out; + } + phy->attached_dev_type = to_dev_type(dr); if (test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state)) goto out; @@ -272,6 +283,7 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) phy->phy->maximum_linkrate = dr->pmax_linkrate; phy->phy->negotiated_linkrate = phy->linkrate; + skip: if (new_phy) if (sas_phy_add(phy->phy)) { sas_phy_free(phy->phy); -- cgit v1.1 From 889d66848b12d891248b03abcb2a42047f8e172a Mon Sep 17 00:00:00 2001 From: Eldad Zack Date: Fri, 5 Apr 2013 20:49:46 +0200 Subject: ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_* The usb_control_msg() function expects __u16 types and performs the endianness conversions by itself. However, in three places, a conversion is performed before it is handed over to usb_control_msg(), which leads to a double conversion (= no conversion): * snd_usb_nativeinstruments_boot_quirk() * snd_nativeinstruments_control_get() * snd_nativeinstruments_control_put() Caught by sparse: sound/usb/mixer_quirks.c:512:38: warning: incorrect type in argument 6 (different base types) sound/usb/mixer_quirks.c:512:38: expected unsigned short [unsigned] [usertype] index sound/usb/mixer_quirks.c:512:38: got restricted __le16 [usertype] sound/usb/mixer_quirks.c:543:35: warning: incorrect type in argument 5 (different base types) sound/usb/mixer_quirks.c:543:35: expected unsigned short [unsigned] [usertype] value sound/usb/mixer_quirks.c:543:35: got restricted __le16 [usertype] sound/usb/mixer_quirks.c:543:56: warning: incorrect type in argument 6 (different base types) sound/usb/mixer_quirks.c:543:56: expected unsigned short [unsigned] [usertype] index sound/usb/mixer_quirks.c:543:56: got restricted __le16 [usertype] sound/usb/quirks.c:502:35: warning: incorrect type in argument 5 (different base types) sound/usb/quirks.c:502:35: expected unsigned short [unsigned] [usertype] value sound/usb/quirks.c:502:35: got restricted __le16 [usertype] Signed-off-by: Eldad Zack Acked-by: Daniel Mack Cc: Signed-off-by: Takashi Iwai --- sound/usb/mixer_quirks.c | 4 ++-- sound/usb/quirks.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 497d274..ebe9144 100644 --- a/sound/usb/mixer_quirks.c +++ b/sound/usb/mixer_quirks.c @@ -509,7 +509,7 @@ static int snd_nativeinstruments_control_get(struct snd_kcontrol *kcontrol, else ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), bRequest, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN, - 0, cpu_to_le16(wIndex), + 0, wIndex, &tmp, sizeof(tmp), 1000); up_read(&mixer->chip->shutdown_rwsem); @@ -540,7 +540,7 @@ static int snd_nativeinstruments_control_put(struct snd_kcontrol *kcontrol, else ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), bRequest, USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT, - cpu_to_le16(wValue), cpu_to_le16(wIndex), + wValue, wIndex, NULL, 0, 1000); up_read(&mixer->chip->shutdown_rwsem); diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 5325a38..9c5ab22 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -486,7 +486,7 @@ static int snd_usb_nativeinstruments_boot_quirk(struct usb_device *dev) { int ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 0xaf, USB_TYPE_VENDOR | USB_RECIP_DEVICE, - cpu_to_le16(1), 0, NULL, 0, 1000); + 1, 0, NULL, 0, 1000); if (ret < 0) return ret; -- cgit v1.1 From c7426bce5933d16b492a34e42ae77e26fceddff6 Mon Sep 17 00:00:00 2001 From: Robert Tivy Date: Thu, 28 Mar 2013 18:41:43 -0700 Subject: remoteproc: fix FW_CONFIG typo Fix obvious typo introduced in commit e121aefa7d9f10eee5cf26ed47129237a05d940b ("remoteproc: fix missing CONFIG_FW_LOADER configurations"). Cc: stable@vger.kernel.org Signed-off-by: Robert Tivy [cc stable, slight subject change] Signed-off-by: Ohad Ben-Cohen --- drivers/remoteproc/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/remoteproc/Kconfig b/drivers/remoteproc/Kconfig index cc1f7bf..c6d77e2 100644 --- a/drivers/remoteproc/Kconfig +++ b/drivers/remoteproc/Kconfig @@ -4,7 +4,7 @@ menu "Remoteproc drivers" config REMOTEPROC tristate depends on HAS_DMA - select FW_CONFIG + select FW_LOADER select VIRTIO config OMAP_REMOTEPROC -- cgit v1.1 From 50a75a8914539c5dcd441c5f54d237a666a426fd Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Sun, 7 Apr 2013 04:53:15 +0000 Subject: ipv6/tcp: Stop processing ICMPv6 redirect messages Tetja Rediske found that if the host receives an ICMPv6 redirect message after sending a SYN+ACK, the connection will be reset. He bisected it down to 093d04d (ipv6: Change skb->data before using icmpv6_notify() to propagate redirect), but the origin of the bug comes from ec18d9a26 (ipv6: Add redirect support to all protocol icmp error handlers.). The bug simply did not trigger prior to 093d04d, because skb->data did not point to the inner IP header and thus icmpv6_notify did not call the correct err_handler. This patch adds the missing "goto out;" in tcp_v6_err. After receiving an ICMPv6 Redirect, we should not continue processing the ICMP in tcp_v6_err, as this may trigger the removal of request-socks or setting sk_err(_soft). Reported-by: Tetja Rediske Signed-off-by: Christoph Paasch Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/tcp_ipv6.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index f6d629f..46a5be8 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -386,6 +386,7 @@ static void tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, if (dst) dst->ops->redirect(dst, sk, skb); + goto out; } if (type == ICMPV6_PKT_TOOBIG) { -- cgit v1.1 From 9b3e617f3df53822345a8573b6d358f6b9e5ed87 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:47 +0000 Subject: atm: update msg_namelen in vcc_recvmsg() The current code does not fill the msg_name member in case it is set. It also does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that by simply setting msg_namelen to 0 as obviously nobody cared about vcc_recvmsg() not filling the msg_name in case it was set. Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/atm/common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/atm/common.c b/net/atm/common.c index 7b49100..737bef5 100644 --- a/net/atm/common.c +++ b/net/atm/common.c @@ -531,6 +531,8 @@ int vcc_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, struct sk_buff *skb; int copied, error = -EINVAL; + msg->msg_namelen = 0; + if (sock->state != SS_CONNECTED) return -ENOTCONN; -- cgit v1.1 From ef3313e84acbf349caecae942ab3ab731471f1a1 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:48 +0000 Subject: ax25: fix info leak via msg_name in ax25_recvmsg() When msg_namelen is non-zero the sockaddr info gets filled out, as requested, but the code fails to initialize the padding bytes of struct sockaddr_ax25 inserted by the compiler for alignment. Additionally the msg_namelen value is updated to sizeof(struct full_sockaddr_ax25) but is not always filled up to this size. Both issues lead to the fact that the code will leak uninitialized kernel stack bytes in net/socket.c. Fix both issues by initializing the memory with memset(0). Cc: Ralf Baechle Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/ax25/af_ax25.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 7b11f8b..e277e38 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -1642,6 +1642,7 @@ static int ax25_recvmsg(struct kiocb *iocb, struct socket *sock, ax25_address src; const unsigned char *mac = skb_mac_header(skb); + memset(sax, 0, sizeof(struct full_sockaddr_ax25)); ax25_addr_parse(mac + 1, skb->data - mac - 1, &src, NULL, &digi, NULL, NULL); sax->sax25_family = AF_AX25; -- cgit v1.1 From 4683f42fde3977bdb4e8a09622788cc8b5313778 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:49 +0000 Subject: Bluetooth: fix possible info leak in bt_sock_recvmsg() In case the socket is already shutting down, bt_sock_recvmsg() returns with 0 without updating msg_namelen leading to net/socket.c leaking the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix this by moving the msg_namelen assignment in front of the shutdown test. Cc: Marcel Holtmann Cc: Gustavo Padovan Cc: Johan Hedberg Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/bluetooth/af_bluetooth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c index d3ee69b..0d1b08c 100644 --- a/net/bluetooth/af_bluetooth.c +++ b/net/bluetooth/af_bluetooth.c @@ -230,6 +230,8 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, if (flags & (MSG_OOB)) return -EOPNOTSUPP; + msg->msg_namelen = 0; + skb = skb_recv_datagram(sk, flags, noblock, &err); if (!skb) { if (sk->sk_shutdown & RCV_SHUTDOWN) @@ -237,8 +239,6 @@ int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, return err; } - msg->msg_namelen = 0; - copied = skb->len; if (len < copied) { msg->msg_flags |= MSG_TRUNC; -- cgit v1.1 From e11e0455c0d7d3d62276a0c55d9dfbc16779d691 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:50 +0000 Subject: Bluetooth: RFCOMM - Fix missing msg_namelen update in rfcomm_sock_recvmsg() If RFCOMM_DEFER_SETUP is set in the flags, rfcomm_sock_recvmsg() returns early with 0 without updating the possibly set msg_namelen member. This, in turn, leads to a 128 byte kernel stack leak in net/socket.c. Fix this by updating msg_namelen in this case. For all other cases it will be handled in bt_sock_stream_recvmsg(). Cc: Marcel Holtmann Cc: Gustavo Padovan Cc: Johan Hedberg Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/bluetooth/rfcomm/sock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index c23bae8..7c9224b 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -608,6 +608,7 @@ static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock, if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { rfcomm_dlc_accept(d); + msg->msg_namelen = 0; return 0; } -- cgit v1.1 From c8c499175f7d295ef867335bceb9a76a2c3cdc38 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:51 +0000 Subject: Bluetooth: SCO - Fix missing msg_namelen update in sco_sock_recvmsg() If the socket is in state BT_CONNECT2 and BT_SK_DEFER_SETUP is set in the flags, sco_sock_recvmsg() returns early with 0 without updating the possibly set msg_namelen member. This, in turn, leads to a 128 byte kernel stack leak in net/socket.c. Fix this by updating msg_namelen in this case. For all other cases it will be handled in bt_sock_recvmsg(). Cc: Marcel Holtmann Cc: Gustavo Padovan Cc: Johan Hedberg Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/bluetooth/sco.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index fad0302..fb6192c 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -665,6 +665,7 @@ static int sco_sock_recvmsg(struct kiocb *iocb, struct socket *sock, test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { hci_conn_accept(pi->conn->hcon, 0); sk->sk_state = BT_CONFIG; + msg->msg_namelen = 0; release_sock(sk); return 0; -- cgit v1.1 From 2d6fbfe733f35c6b355c216644e08e149c61b271 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:52 +0000 Subject: caif: Fix missing msg_namelen update in caif_seqpkt_recvmsg() The current code does not fill the msg_name member in case it is set. It also does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that by simply setting msg_namelen to 0 as obviously nobody cared about caif_seqpkt_recvmsg() not filling the msg_name in case it was set. Cc: Sjur Braendeland Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/caif/caif_socket.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/caif/caif_socket.c b/net/caif/caif_socket.c index 095259f..ff2ff3c 100644 --- a/net/caif/caif_socket.c +++ b/net/caif/caif_socket.c @@ -286,6 +286,8 @@ static int caif_seqpkt_recvmsg(struct kiocb *iocb, struct socket *sock, if (m->msg_flags&MSG_OOB) goto read_error; + m->msg_namelen = 0; + skb = skb_recv_datagram(sk, flags, 0 , &ret); if (!skb) goto read_error; -- cgit v1.1 From 5ae94c0d2f0bed41d6718be743985d61b7f5c47d Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:53 +0000 Subject: irda: Fix missing msg_namelen update in irda_recvmsg_dgram() The current code does not fill the msg_name member in case it is set. It also does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that by simply setting msg_namelen to 0 as obviously nobody cared about irda_recvmsg_dgram() not filling the msg_name in case it was set. Cc: Samuel Ortiz Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/irda/af_irda.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c index d28e7f0..e493b33 100644 --- a/net/irda/af_irda.c +++ b/net/irda/af_irda.c @@ -1386,6 +1386,8 @@ static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock, IRDA_DEBUG(4, "%s()\n", __func__); + msg->msg_namelen = 0; + skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, flags & MSG_DONTWAIT, &err); if (!skb) -- cgit v1.1 From a5598bd9c087dc0efc250a5221e5d0e6f584ee88 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:54 +0000 Subject: iucv: Fix missing msg_namelen update in iucv_sock_recvmsg() The current code does not fill the msg_name member in case it is set. It also does not set the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix that by simply setting msg_namelen to 0 as obviously nobody cared about iucv_sock_recvmsg() not filling the msg_name in case it was set. Cc: Ursula Braun Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/iucv/af_iucv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index a7d11ffe..bf693582 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -1328,6 +1328,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct sk_buff *skb, *rskb, *cskb; int err = 0; + msg->msg_namelen = 0; + if ((sk->sk_state == IUCV_DISCONN) && skb_queue_empty(&iucv->backlog_skb_q) && skb_queue_empty(&sk->sk_receive_queue) && -- cgit v1.1 From b860d3cc62877fad02863e2a08efff69a19382d2 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:55 +0000 Subject: l2tp: fix info leak in l2tp_ip6_recvmsg() The L2TP code for IPv6 fails to initialize the l2tp_conn_id member of struct sockaddr_l2tpip6 and therefore leaks four bytes kernel stack in l2tp_ip6_recvmsg() in case msg_name is set. Initialize l2tp_conn_id with 0 to avoid the info leak. Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/l2tp/l2tp_ip6.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index c74f5a9..b8a6039 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -690,6 +690,7 @@ static int l2tp_ip6_recvmsg(struct kiocb *iocb, struct sock *sk, lsa->l2tp_addr = ipv6_hdr(skb)->saddr; lsa->l2tp_flowinfo = 0; lsa->l2tp_scope_id = 0; + lsa->l2tp_conn_id = 0; if (ipv6_addr_type(&lsa->l2tp_addr) & IPV6_ADDR_LINKLOCAL) lsa->l2tp_scope_id = IP6CB(skb)->iif; } -- cgit v1.1 From c77a4b9cffb6215a15196ec499490d116dfad181 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:56 +0000 Subject: llc: Fix missing msg_namelen update in llc_ui_recvmsg() For stream sockets the code misses to update the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. The msg_namelen update is also missing for datagram sockets in case the socket is shutting down during receive. Fix both issues by setting msg_namelen to 0 early. It will be updated later if we're going to fill the msg_name member. Cc: Arnaldo Carvalho de Melo Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/llc/af_llc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/llc/af_llc.c b/net/llc/af_llc.c index 8870988..48aaa89 100644 --- a/net/llc/af_llc.c +++ b/net/llc/af_llc.c @@ -720,6 +720,8 @@ static int llc_ui_recvmsg(struct kiocb *iocb, struct socket *sock, int target; /* Read at least this many bytes */ long timeo; + msg->msg_namelen = 0; + lock_sock(sk); copied = -ENOTCONN; if (unlikely(sk->sk_type == SOCK_STREAM && sk->sk_state == TCP_LISTEN)) -- cgit v1.1 From 3ce5efad47b62c57a4f5c54248347085a750ce0e Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:57 +0000 Subject: netrom: fix info leak via msg_name in nr_recvmsg() In case msg_name is set the sockaddr info gets filled out, as requested, but the code fails to initialize the padding bytes of struct sockaddr_ax25 inserted by the compiler for alignment. Also the sax25_ndigis member does not get assigned, leaking four more bytes. Both issues lead to the fact that the code will leak uninitialized kernel stack bytes in net/socket.c. Fix both issues by initializing the memory with memset(0). Cc: Ralf Baechle Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/netrom/af_netrom.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index d1fa1d9..7fcb307 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -1173,6 +1173,7 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock, } if (sax != NULL) { + memset(sax, 0, sizeof(sax)); sax->sax25_family = AF_NETROM; skb_copy_from_linear_data_offset(skb, 7, sax->sax25_call.ax25_call, AX25_ADDR_LEN); -- cgit v1.1 From d26d6504f23e803824e8ebd14e52d4fc0a0b09cb Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:58 +0000 Subject: NFC: llcp: fix info leaks via msg_name in llcp_sock_recvmsg() The code in llcp_sock_recvmsg() does not initialize all the members of struct sockaddr_nfc_llcp when filling the sockaddr info. Nor does it initialize the padding bytes of the structure inserted by the compiler for alignment. Also, if the socket is in state LLCP_CLOSED or is shutting down during receive the msg_namelen member is not updated to 0 while otherwise returning with 0, i.e. "success". The msg_namelen update is also missing for stream and seqpacket sockets which don't fill the sockaddr info. Both issues lead to the fact that the code will leak uninitialized kernel stack bytes in net/socket.c. Fix the first issue by initializing the memory used for sockaddr info with memset(0). Fix the second one by setting msg_namelen to 0 early. It will be updated later if we're going to fill the msg_name member. Cc: Lauro Ramos Venancio Cc: Aloisio Almeida Jr Cc: Samuel Ortiz Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/nfc/llcp/sock.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/nfc/llcp/sock.c b/net/nfc/llcp/sock.c index 8f02574..6c94447 100644 --- a/net/nfc/llcp/sock.c +++ b/net/nfc/llcp/sock.c @@ -646,6 +646,8 @@ static int llcp_sock_recvmsg(struct kiocb *iocb, struct socket *sock, pr_debug("%p %zu\n", sk, len); + msg->msg_namelen = 0; + lock_sock(sk); if (sk->sk_state == LLCP_CLOSED && @@ -691,6 +693,7 @@ static int llcp_sock_recvmsg(struct kiocb *iocb, struct socket *sock, pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap); + memset(sockaddr, 0, sizeof(*sockaddr)); sockaddr->sa_family = AF_NFC; sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP; sockaddr->dsap = ui_cb->dsap; -- cgit v1.1 From 4a184233f21645cf0b719366210ed445d1024d72 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:51:59 +0000 Subject: rose: fix info leak via msg_name in rose_recvmsg() The code in rose_recvmsg() does not initialize all of the members of struct sockaddr_rose/full_sockaddr_rose when filling the sockaddr info. Nor does it initialize the padding bytes of the structure inserted by the compiler for alignment. This will lead to leaking uninitialized kernel stack bytes in net/socket.c. Fix the issue by initializing the memory used for sockaddr info with memset(0). Cc: Ralf Baechle Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/rose/af_rose.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c index cf68e6e..9c83474 100644 --- a/net/rose/af_rose.c +++ b/net/rose/af_rose.c @@ -1253,6 +1253,7 @@ static int rose_recvmsg(struct kiocb *iocb, struct socket *sock, skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); if (srose != NULL) { + memset(srose, 0, msg->msg_namelen); srose->srose_family = AF_ROSE; srose->srose_addr = rose->dest_addr; srose->srose_call = rose->dest_call; -- cgit v1.1 From 60085c3d009b0df252547adb336d1ccca5ce52ec Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:52:00 +0000 Subject: tipc: fix info leaks via msg_name in recv_msg/recv_stream The code in set_orig_addr() does not initialize all of the members of struct sockaddr_tipc when filling the sockaddr info -- namely the union is only partly filled. This will make recv_msg() and recv_stream() -- the only users of this function -- leak kernel stack memory as the msg_name member is a local variable in net/socket.c. Additionally to that both recv_msg() and recv_stream() fail to update the msg_namelen member to 0 while otherwise returning with 0, i.e. "success". This is the case for, e.g., non-blocking sockets. This will lead to a 128 byte kernel stack leak in net/socket.c. Fix the first issue by initializing the memory of the union with memset(0). Fix the second one by setting msg_namelen to 0 early as it will be updated later if we're going to fill the msg_name member. Cc: Jon Maloy Cc: Allan Stephens Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/tipc/socket.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/net/tipc/socket.c b/net/tipc/socket.c index a9622b6..515ce38 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -790,6 +790,7 @@ static void set_orig_addr(struct msghdr *m, struct tipc_msg *msg) if (addr) { addr->family = AF_TIPC; addr->addrtype = TIPC_ADDR_ID; + memset(&addr->addr, 0, sizeof(addr->addr)); addr->addr.id.ref = msg_origport(msg); addr->addr.id.node = msg_orignode(msg); addr->addr.name.domain = 0; /* could leave uninitialized */ @@ -904,6 +905,9 @@ static int recv_msg(struct kiocb *iocb, struct socket *sock, goto exit; } + /* will be updated in set_orig_addr() if needed */ + m->msg_namelen = 0; + timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); restart: @@ -1013,6 +1017,9 @@ static int recv_stream(struct kiocb *iocb, struct socket *sock, goto exit; } + /* will be updated in set_orig_addr() if needed */ + m->msg_namelen = 0; + target = sock_rcvlowat(sk, flags & MSG_WAITALL, buf_len); timeout = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); -- cgit v1.1 From 680d04e0ba7e926233e3b9cee59125ce181f66ba Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:52:01 +0000 Subject: VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue() In case we received no data on the call to skb_recv_datagram(), i.e. skb->data is NULL, vmci_transport_dgram_dequeue() will return with 0 without updating msg_namelen leading to net/socket.c leaking the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Fix this by moving the already existing msg_namelen assignment a few lines above. Cc: Andy King Cc: Dmitry Torokhov Cc: George Zhang Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/vmw_vsock/vmci_transport.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c index 1f6508e..5e04d3d 100644 --- a/net/vmw_vsock/vmci_transport.c +++ b/net/vmw_vsock/vmci_transport.c @@ -1736,6 +1736,8 @@ static int vmci_transport_dgram_dequeue(struct kiocb *kiocb, if (flags & MSG_OOB || flags & MSG_ERRQUEUE) return -EOPNOTSUPP; + msg->msg_namelen = 0; + /* Retrieve the head sk_buff from the socket's receive queue. */ err = 0; skb = skb_recv_datagram(&vsk->sk, flags, noblock, &err); @@ -1768,7 +1770,6 @@ static int vmci_transport_dgram_dequeue(struct kiocb *kiocb, if (err) goto out; - msg->msg_namelen = 0; if (msg->msg_name) { struct sockaddr_vm *vm_addr; -- cgit v1.1 From d5e0d0f607a7a029c6563a0470d88255c89a8d11 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Sun, 7 Apr 2013 01:52:02 +0000 Subject: VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg() The code misses to update the msg_namelen member to 0 and therefore makes net/socket.c leak the local, uninitialized sockaddr_storage variable to userland -- 128 bytes of kernel stack memory. Cc: Andy King Cc: Dmitry Torokhov Cc: George Zhang Signed-off-by: Mathias Krause Signed-off-by: David S. Miller --- net/vmw_vsock/af_vsock.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index d8079da..7f93e2a 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -1670,6 +1670,8 @@ vsock_stream_recvmsg(struct kiocb *kiocb, vsk = vsock_sk(sk); err = 0; + msg->msg_namelen = 0; + lock_sock(sk); if (sk->sk_state != SS_CONNECTED) { -- cgit v1.1 From 259c9a1f9e0fa6610c5d7c15ba658dd4fd007bf5 Mon Sep 17 00:00:00 2001 From: Sridhar Samudrala Date: Tue, 2 Apr 2013 12:35:31 +0000 Subject: sctp: remove 'sridhar' from maintainers list Update SCTP maintainers list. Signed-off-by: Sridhar Samudrala Signed-off-by: David S. Miller --- MAINTAINERS | 1 - 1 file changed, 1 deletion(-) diff --git a/MAINTAINERS b/MAINTAINERS index 836a618..3767040 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -6951,7 +6951,6 @@ F: drivers/scsi/st* SCTP PROTOCOL M: Vlad Yasevich -M: Sridhar Samudrala M: Neil Horman L: linux-sctp@vger.kernel.org W: http://lksctp.sourceforge.net -- cgit v1.1 From cb28ea3b13b86fb23448525f34720e659bda7aa8 Mon Sep 17 00:00:00 2001 From: Yaniv Rosner Date: Sun, 7 Apr 2013 05:36:23 +0000 Subject: bnx2x: Fix KR2 rapid link flap Check KR2 recovery time at the beginning of the work-around function. Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index 77ebae0..0283f34 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -13437,13 +13437,7 @@ static void bnx2x_check_kr2_wa(struct link_params *params, { struct bnx2x *bp = params->bp; u16 base_page, next_page, not_kr2_device, lane; - int sigdet = bnx2x_warpcore_get_sigdet(phy, params); - - if (!sigdet) { - if (!(vars->link_attr_sync & LINK_ATTR_SYNC_KR2_ENABLE)) - bnx2x_kr2_recovery(params, vars, phy); - return; - } + int sigdet; /* Once KR2 was disabled, wait 5 seconds before checking KR2 recovery * since some switches tend to reinit the AN process and clear the @@ -13454,6 +13448,16 @@ static void bnx2x_check_kr2_wa(struct link_params *params, vars->check_kr2_recovery_cnt--; return; } + + sigdet = bnx2x_warpcore_get_sigdet(phy, params); + if (!sigdet) { + if (!(vars->link_attr_sync & LINK_ATTR_SYNC_KR2_ENABLE)) { + bnx2x_kr2_recovery(params, vars, phy); + DP(NETIF_MSG_LINK, "No sigdet\n"); + } + 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); -- cgit v1.1 From 9fb2640159f9d4f5a2a9d60e490482d4cbecafdb Mon Sep 17 00:00:00 2001 From: Michael Wolf Date: Fri, 5 Apr 2013 10:41:40 +0000 Subject: powerpc: pSeries_lpar_hpte_remove fails from Adjunct partition being performed before the ANDCOND test Some versions of pHyp will perform the adjunct partition test before the ANDCOND test. The result of this is that H_RESOURCE can be returned and cause the BUG_ON condition to occur. The HPTE is not removed. So add a check for H_RESOURCE, it is ok if this HPTE is not removed as pSeries_lpar_hpte_remove is looking for an HPTE to remove and not a specific HPTE to remove. So it is ok to just move on to the next slot and try again. Cc: stable@vger.kernel.org Signed-off-by: Michael Wolf Signed-off-by: Stephen Rothwell --- arch/powerpc/platforms/pseries/lpar.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index 0da39fe..299731e 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -186,7 +186,13 @@ static long pSeries_lpar_hpte_remove(unsigned long hpte_group) (0x1UL << 4), &dummy1, &dummy2); if (lpar_rc == H_SUCCESS) return i; - BUG_ON(lpar_rc != H_NOT_FOUND); + + /* + * The test for adjunct partition is performed before the + * ANDCOND test. H_RESOURCE may be returned, so we need to + * check for that as well. + */ + BUG_ON(lpar_rc != H_NOT_FOUND && lpar_rc != H_RESOURCE); slot_offset++; slot_offset &= 0x7; -- cgit v1.1 From c2fccc1c9f7c81700cbac2120a4ad5441dd37004 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Mon, 8 Apr 2013 10:12:11 +0200 Subject: Revert "loop: cleanup partitions when detaching loop device" This reverts commit 8761a3dc1f07b163414e2215a2cadbb4cfe2a107. There are situations where the destruction path is called with the bdev->bd_mutex already held, which then deadlocks in loop_clr_fd(). The normal partition cleanup does a trylock() on the mutex, but it'd be nice to have a more bullet proof method in loop. So punt this more involved fix to the next merge window, and just back out this buggy fix for now. Signed-off-by: Jens Axboe --- block/partition-generic.c | 1 - drivers/block/loop.c | 21 ++------------------- 2 files changed, 2 insertions(+), 20 deletions(-) diff --git a/block/partition-generic.c b/block/partition-generic.c index ae95ee6..789cdea 100644 --- a/block/partition-generic.c +++ b/block/partition-generic.c @@ -257,7 +257,6 @@ 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 fe5f640..ee13a82 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1044,29 +1044,12 @@ 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 a1cbcaa9ea87b87a96b9fc465951dcf36e459ca2 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 6 Apr 2013 10:10:27 +0200 Subject: sched_clock: Prevent 64bit inatomicity on 32bit systems The sched_clock_remote() implementation has the following inatomicity problem on 32bit systems when accessing the remote scd->clock, which is a 64bit value. CPU0 CPU1 sched_clock_local() sched_clock_remote(CPU0) ... remote_clock = scd[CPU0]->clock read_low32bit(scd[CPU0]->clock) cmpxchg64(scd->clock,...) read_high32bit(scd[CPU0]->clock) While the update of scd->clock is using an atomic64 mechanism, the readout on the remote cpu is not, which can cause completely bogus readouts. It is a quite rare problem, because it requires the update to hit the narrow race window between the low/high readout and the update must go across the 32bit boundary. The resulting misbehaviour is, that CPU1 will see the sched_clock on CPU1 ~4 seconds ahead of it's own and update CPU1s sched_clock value to this bogus timestamp. This stays that way due to the clamping implementation for about 4 seconds until the synchronization with CLOCK_MONOTONIC undoes the problem. The issue is hard to observe, because it might only result in a less accurate SCHED_OTHER timeslicing behaviour. To create observable damage on realtime scheduling classes, it is necessary that the bogus update of CPU1 sched_clock happens in the context of an realtime thread, which then gets charged 4 seconds of RT runtime, which results in the RT throttler mechanism to trigger and prevent scheduling of RT tasks for a little less than 4 seconds. So this is quite unlikely as well. The issue was quite hard to decode as the reproduction time is between 2 days and 3 weeks and intrusive tracing makes it less likely, but the following trace recorded with trace_clock=global, which uses sched_clock_local(), gave the final hint: -0 0d..30 400269.477150: hrtimer_cancel: hrtimer=0xf7061e80 -0 0d..30 400269.477151: hrtimer_start: hrtimer=0xf7061e80 ... irq/20-S-587 1d..32 400273.772118: sched_wakeup: comm= ... target_cpu=0 -0 0dN.30 400273.772118: hrtimer_cancel: hrtimer=0xf7061e80 What happens is that CPU0 goes idle and invokes sched_clock_idle_sleep_event() which invokes sched_clock_local() and CPU1 runs a remote wakeup for CPU0 at the same time, which invokes sched_remote_clock(). The time jump gets propagated to CPU0 via sched_remote_clock() and stays stale on both cores for ~4 seconds. There are only two other possibilities, which could cause a stale sched clock: 1) ktime_get() which reads out CLOCK_MONOTONIC returns a sporadic wrong value. 2) sched_clock() which reads the TSC returns a sporadic wrong value. #1 can be excluded because sched_clock would continue to increase for one jiffy and then go stale. #2 can be excluded because it would not make the clock jump forward. It would just result in a stale sched_clock for one jiffy. After quite some brain twisting and finding the same pattern on other traces, sched_clock_remote() remained the only place which could cause such a problem and as explained above it's indeed racy on 32bit systems. So while on 64bit systems the readout is atomic, we need to verify the remote readout on 32bit machines. We need to protect the local->clock readout in sched_clock_remote() on 32bit as well because an NMI could hit between the low and the high readout, call sched_clock_local() and modify local->clock. Thanks to Siegfried Wulsch for bearing with my debug requests and going through the tedious tasks of running a bunch of reproducer systems to generate the debug information which let me decode the issue. Reported-by: Siegfried Wulsch Acked-by: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1304051544160.21884@ionos Signed-off-by: Thomas Gleixner Cc: stable@vger.kernel.org --- kernel/sched/clock.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/kernel/sched/clock.c b/kernel/sched/clock.c index c685e31..c3ae144 100644 --- a/kernel/sched/clock.c +++ b/kernel/sched/clock.c @@ -176,10 +176,36 @@ static u64 sched_clock_remote(struct sched_clock_data *scd) u64 this_clock, remote_clock; u64 *ptr, old_val, val; +#if BITS_PER_LONG != 64 +again: + /* + * Careful here: The local and the remote clock values need to + * be read out atomic as we need to compare the values and + * then update either the local or the remote side. So the + * cmpxchg64 below only protects one readout. + * + * We must reread via sched_clock_local() in the retry case on + * 32bit as an NMI could use sched_clock_local() via the + * tracer and hit between the readout of + * the low32bit and the high 32bit portion. + */ + this_clock = sched_clock_local(my_scd); + /* + * We must enforce atomic readout on 32bit, otherwise the + * update on the remote cpu can hit inbetween the readout of + * the low32bit and the high 32bit portion. + */ + remote_clock = cmpxchg64(&scd->clock, 0, 0); +#else + /* + * On 64bit the read of [my]scd->clock is atomic versus the + * update, so we can avoid the above 32bit dance. + */ sched_clock_local(my_scd); again: this_clock = my_scd->clock; remote_clock = scd->clock; +#endif /* * Use the opportunity that we have both locks -- cgit v1.1 From fd9b86d37a600488dbd80fe60cca46b822bff1cd Mon Sep 17 00:00:00 2001 From: libin Date: Mon, 8 Apr 2013 14:39:12 +0800 Subject: sched/debug: Fix sd->*_idx limit range avoiding overflow Commit 201c373e8e ("sched/debug: Limit sd->*_idx range on sysctl") was an incomplete bug fix. This patch fixes sd->*_idx limit range to [0 ~ CPU_LOAD_IDX_MAX-1] avoiding array overflow caused by setting sd->*_idx to CPU_LOAD_IDX_MAX on sysctl. Signed-off-by: Libin Cc: Cc: Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/51626610.2040607@huawei.com Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 306943f..fa07792 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -4933,7 +4933,7 @@ static void sd_free_ctl_entry(struct ctl_table **tablep) } static int min_load_idx = 0; -static int max_load_idx = CPU_LOAD_IDX_MAX; +static int max_load_idx = CPU_LOAD_IDX_MAX-1; static void set_table_entry(struct ctl_table *entry, -- cgit v1.1 From c97847d2f0eb77c806e650e04d9bbcf79fa05730 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 8 Apr 2013 11:48:27 +0800 Subject: perf: Fix strncpy() use, always make sure it's NUL terminated For NUL terminated string, always make sure that there's '\0' at the end. In our case we need a return value, so still use strncpy() and fix up the tail explicitly. (strlcpy() returns the size, not the pointer) Signed-off-by: Chen Gang Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/51623E0B.7070101@asianux.com Signed-off-by: Ingo Molnar --- kernel/events/core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index 59412d0..7f0d67e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4737,7 +4737,8 @@ static void perf_event_mmap_event(struct perf_mmap_event *mmap_event) } else { if (arch_vma_name(mmap_event->vma)) { name = strncpy(tmp, arch_vma_name(mmap_event->vma), - sizeof(tmp)); + sizeof(tmp) - 1); + tmp[sizeof(tmp) - 1] = '\0'; goto got_name; } -- cgit v1.1 From 67012ab1d2ce871afea4ee55408f233f97d09d07 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 8 Apr 2013 12:06:44 +0800 Subject: perf: Fix strncpy() use, use strlcpy() instead of strncpy() For NUL terminated string we always need to set '\0' at the end. Signed-off-by: Chen Gang Cc: rostedt@goodmis.org Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/51624254.30301@asianux.com Signed-off-by: Ingo Molnar --- kernel/trace/trace.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 4f1dade..3f5046a 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -132,7 +132,7 @@ static char *default_bootup_tracer; static int __init set_cmdline_ftrace(char *str) { - strncpy(bootup_tracer_buf, str, MAX_TRACER_SIZE); + strlcpy(bootup_tracer_buf, str, MAX_TRACER_SIZE); default_bootup_tracer = bootup_tracer_buf; /* We are using ftrace early, expand it */ ring_buffer_expanded = 1; @@ -162,7 +162,7 @@ static char *trace_boot_options __initdata; static int __init set_trace_boot_options(char *str) { - strncpy(trace_boot_options_buf, str, MAX_TRACER_SIZE); + strlcpy(trace_boot_options_buf, str, MAX_TRACER_SIZE); trace_boot_options = trace_boot_options_buf; return 0; } -- cgit v1.1 From 75761cc15877c155b3849b4e0e0cb3f897faf471 Mon Sep 17 00:00:00 2001 From: Chen Gang Date: Mon, 8 Apr 2013 12:12:39 +0800 Subject: ftrace: Fix strncpy() use, use strlcpy() instead of strncpy() For NUL terminated string we always need to set '\0' at the end. Signed-off-by: Chen Gang Cc: rostedt@goodmis.org Cc: Frederic Weisbecker Link: http://lkml.kernel.org/r/516243B7.9020405@asianux.com Signed-off-by: Ingo Molnar --- 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 6893d5a..db14374 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -3441,14 +3441,14 @@ static char ftrace_filter_buf[FTRACE_FILTER_SIZE] __initdata; static int __init set_ftrace_notrace(char *str) { - strncpy(ftrace_notrace_buf, str, FTRACE_FILTER_SIZE); + strlcpy(ftrace_notrace_buf, str, FTRACE_FILTER_SIZE); return 1; } __setup("ftrace_notrace=", set_ftrace_notrace); static int __init set_ftrace_filter(char *str) { - strncpy(ftrace_filter_buf, str, FTRACE_FILTER_SIZE); + strlcpy(ftrace_filter_buf, str, FTRACE_FILTER_SIZE); return 1; } __setup("ftrace_filter=", set_ftrace_filter); -- cgit v1.1 From e614b3332a4f3f264a26da28e5a1f4cc3aea3974 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Thu, 4 Apr 2013 10:57:48 +0200 Subject: sched/cputime: Fix accounting on multi-threaded processes Recent commit 6fac4829 ("cputime: Use accessors to read task cputime stats") introduced a bug, where we account many times the cputime of the first thread, instead of cputimes of all the different threads. Signed-off-by: Stanislaw Gruszka Acked-by: Frederic Weisbecker Cc: Oleg Nesterov Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20130404085740.GA2495@redhat.com Signed-off-by: Ingo Molnar --- kernel/sched/cputime.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c index ed12cbb..e93cca9 100644 --- a/kernel/sched/cputime.c +++ b/kernel/sched/cputime.c @@ -310,7 +310,7 @@ void thread_group_cputime(struct task_struct *tsk, struct task_cputime *times) t = tsk; do { - task_cputime(tsk, &utime, &stime); + task_cputime(t, &utime, &stime); times->utime += utime; times->stime += stime; times->sum_exec_runtime += task_sched_runtime(t); -- cgit v1.1 From 05a324b9c50c3edbe0ce48ee3e37b210859ef1ae Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 4 Apr 2013 23:39:38 +0000 Subject: net: ipv4: reset check_lifetime_work after changing lifetime This will result in calling check_lifetime in nearest opportunity and that function will adjust next time to call check_lifetime correctly. Without this, check_lifetime is called in time computed by previous run, not affecting modified lifetime. Introduced by: commit 5c766d642bcaf "ipv4: introduce address lifetime" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/ipv4/devinet.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 96083b7..00386e0 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -804,6 +804,8 @@ static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg return -EEXIST; ifa = ifa_existing; set_ifa_lifetime(ifa, valid_lft, prefered_lft); + cancel_delayed_work(&check_lifetime_work); + schedule_delayed_work(&check_lifetime_work, 0); rtmsg_ifa(RTM_NEWADDR, ifa, nlh, NETLINK_CB(skb).portid); blocking_notifier_call_chain(&inetaddr_chain, NETDEV_UP, ifa); } -- cgit v1.1 From c988d1e8cbf722e34ee6124b8b89d47fec655b51 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Thu, 4 Apr 2013 23:39:39 +0000 Subject: net: ipv4: fix schedule while atomic bug in check_lifetime() move might_sleep operations out of the rcu_read_lock() section. Also fix iterating over ifa_dev->ifa_list Introduced by: commit 5c766d642bcaf "ipv4: introduce address lifetime" Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/ipv4/devinet.c | 58 +++++++++++++++++++++++++++++++++++++++--------------- 1 file changed, 42 insertions(+), 16 deletions(-) diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 00386e0..c6287cd 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -587,13 +587,16 @@ static void check_lifetime(struct work_struct *work) { unsigned long now, next, next_sec, next_sched; struct in_ifaddr *ifa; + struct hlist_node *n; int i; now = jiffies; next = round_jiffies_up(now + ADDR_CHECK_FREQUENCY); - rcu_read_lock(); for (i = 0; i < IN4_ADDR_HSIZE; i++) { + bool change_needed = false; + + rcu_read_lock(); hlist_for_each_entry_rcu(ifa, &inet_addr_lst[i], hash) { unsigned long age; @@ -606,16 +609,7 @@ static void check_lifetime(struct work_struct *work) if (ifa->ifa_valid_lft != INFINITY_LIFE_TIME && age >= ifa->ifa_valid_lft) { - struct in_ifaddr **ifap ; - - rtnl_lock(); - for (ifap = &ifa->ifa_dev->ifa_list; - *ifap != NULL; ifap = &ifa->ifa_next) { - if (*ifap == ifa) - inet_del_ifa(ifa->ifa_dev, - ifap, 1); - } - rtnl_unlock(); + change_needed = true; } else if (ifa->ifa_preferred_lft == INFINITY_LIFE_TIME) { continue; @@ -625,10 +619,8 @@ static void check_lifetime(struct work_struct *work) next = ifa->ifa_tstamp + ifa->ifa_valid_lft * HZ; - if (!(ifa->ifa_flags & IFA_F_DEPRECATED)) { - ifa->ifa_flags |= IFA_F_DEPRECATED; - rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0); - } + if (!(ifa->ifa_flags & IFA_F_DEPRECATED)) + change_needed = true; } else if (time_before(ifa->ifa_tstamp + ifa->ifa_preferred_lft * HZ, next)) { @@ -636,8 +628,42 @@ static void check_lifetime(struct work_struct *work) ifa->ifa_preferred_lft * HZ; } } + rcu_read_unlock(); + if (!change_needed) + continue; + rtnl_lock(); + hlist_for_each_entry_safe(ifa, n, &inet_addr_lst[i], hash) { + unsigned long age; + + if (ifa->ifa_flags & IFA_F_PERMANENT) + continue; + + /* We try to batch several events at once. */ + age = (now - ifa->ifa_tstamp + + ADDRCONF_TIMER_FUZZ_MINUS) / HZ; + + if (ifa->ifa_valid_lft != INFINITY_LIFE_TIME && + age >= ifa->ifa_valid_lft) { + struct in_ifaddr **ifap; + + for (ifap = &ifa->ifa_dev->ifa_list; + *ifap != NULL; ifap = &(*ifap)->ifa_next) { + if (*ifap == ifa) { + inet_del_ifa(ifa->ifa_dev, + ifap, 1); + break; + } + } + } else if (ifa->ifa_preferred_lft != + INFINITY_LIFE_TIME && + age >= ifa->ifa_preferred_lft && + !(ifa->ifa_flags & IFA_F_DEPRECATED)) { + ifa->ifa_flags |= IFA_F_DEPRECATED; + rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0); + } + } + rtnl_unlock(); } - rcu_read_unlock(); next_sec = round_jiffies_up(next); next_sched = next; -- cgit v1.1 From fd5c07a8d6a10c7112b19f3b0d428627c62b06ab Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Fri, 5 Apr 2013 11:44:39 +0000 Subject: hyperv: Fix a kernel warning from netvsc_linkstatus_callback() The warning about local_bh_enable inside IRQ happens when disconnecting a virtual NIC. The reason for the warning is -- netif_tx_disable() is called when the NIC is disconnected. And it's called within irq context. netif_tx_disable() calls local_bh_enable() which displays warning if in irq. The fix is to remove the unnecessary netif_tx_disable & wake_queue() in the netvsc_linkstatus_callback(). Reported-by: Richard Genoud Tested-by: Long Li Tested-by: Richard Genoud Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc_drv.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index 5f85205..8341b62 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -241,13 +241,11 @@ void netvsc_linkstatus_callback(struct hv_device *device_obj, if (status == 1) { netif_carrier_on(net); - netif_wake_queue(net); ndev_ctx = netdev_priv(net); schedule_delayed_work(&ndev_ctx->dwork, 0); schedule_delayed_work(&ndev_ctx->dwork, msecs_to_jiffies(20)); } else { netif_carrier_off(net); - netif_tx_disable(net); } } -- cgit v1.1 From f1ea3cd70110d482ef1ce6ef158df113aa366f43 Mon Sep 17 00:00:00 2001 From: Haiyang Zhang Date: Fri, 5 Apr 2013 11:44:40 +0000 Subject: hyperv: Fix RNDIS send_completion code path In some cases, the VM_PKT_COMP message can arrive later than RNDIS completion message, which will free the packet memory. This may cause panic due to access to freed memory in netvsc_send_completion(). This patch fixes this problem by removing rndis_filter_send_request_completion() from the code path. The function was a no-op. Reported-by: Long Li Tested-by: Long Li Signed-off-by: Haiyang Zhang Reviewed-by: K. Y. Srinivasan Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc.c | 17 ++++++++++++----- drivers/net/hyperv/rndis_filter.c | 14 +------------- 2 files changed, 13 insertions(+), 18 deletions(-) diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 1cd7748..f5f0f09 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -470,8 +470,10 @@ static void netvsc_send_completion(struct hv_device *device, packet->trans_id; /* Notify the layer above us */ - nvsc_packet->completion.send.send_completion( - nvsc_packet->completion.send.send_completion_ctx); + if (nvsc_packet) + nvsc_packet->completion.send.send_completion( + nvsc_packet->completion.send. + send_completion_ctx); num_outstanding_sends = atomic_dec_return(&net_device->num_outstanding_sends); @@ -498,6 +500,7 @@ int netvsc_send(struct hv_device *device, int ret = 0; struct nvsp_message sendMessage; struct net_device *ndev; + u64 req_id; net_device = get_outbound_net_device(device); if (!net_device) @@ -518,20 +521,24 @@ int netvsc_send(struct hv_device *device, 0xFFFFFFFF; sendMessage.msg.v1_msg.send_rndis_pkt.send_buf_section_size = 0; + if (packet->completion.send.send_completion) + req_id = (u64)packet; + else + req_id = 0; + if (packet->page_buf_cnt) { ret = vmbus_sendpacket_pagebuffer(device->channel, packet->page_buf, packet->page_buf_cnt, &sendMessage, sizeof(struct nvsp_message), - (unsigned long)packet); + req_id); } else { ret = vmbus_sendpacket(device->channel, &sendMessage, sizeof(struct nvsp_message), - (unsigned long)packet, + req_id, VM_PKT_DATA_INBAND, VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); - } if (ret == 0) { diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 2b657d4..0775f0a 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -61,9 +61,6 @@ struct rndis_request { static void rndis_filter_send_completion(void *ctx); -static void rndis_filter_send_request_completion(void *ctx); - - static struct rndis_device *get_rndis_device(void) { @@ -241,10 +238,7 @@ static int rndis_filter_send_request(struct rndis_device *dev, packet->page_buf[0].len; } - packet->completion.send.send_completion_ctx = req;/* packet; */ - packet->completion.send.send_completion = - rndis_filter_send_request_completion; - packet->completion.send.send_completion_tid = (unsigned long)dev; + packet->completion.send.send_completion = NULL; ret = netvsc_send(dev->net_dev->dev, packet); return ret; @@ -999,9 +993,3 @@ static void rndis_filter_send_completion(void *ctx) /* Pass it back to the original handler */ filter_pkt->completion(filter_pkt->completion_ctx); } - - -static void rndis_filter_send_request_completion(void *ctx) -{ - /* Noop */ -} -- cgit v1.1 From b50b72de2f2feed4adfbd8e18610a393b5a04cc7 Mon Sep 17 00:00:00 2001 From: willy tarreau Date: Sat, 6 Apr 2013 08:47:01 +0000 Subject: net: mvneta: enable features before registering the driver It seems that the reason why the dev features were ignored was because they were enabled after registeration. Signed-off-by: Willy Tarreau Acked-by: Thomas Petazzoni Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/mvneta.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index cd345b8..1e628ce 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -2771,16 +2771,17 @@ static int mvneta_probe(struct platform_device *pdev) netif_napi_add(dev, &pp->napi, mvneta_poll, pp->weight); + dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; + dev->hw_features |= NETIF_F_SG | NETIF_F_IP_CSUM; + dev->vlan_features |= NETIF_F_SG | NETIF_F_IP_CSUM; + dev->priv_flags |= IFF_UNICAST_FLT; + err = register_netdev(dev); if (err < 0) { dev_err(&pdev->dev, "failed to register\n"); goto err_deinit; } - dev->features = NETIF_F_SG | NETIF_F_IP_CSUM; - dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM; - dev->priv_flags |= IFF_UNICAST_FLT; - netdev_info(dev, "mac: %pM\n", dev->dev_addr); platform_set_drvdata(pdev, pp->dev); -- cgit v1.1 From 2930e04d00e113ae24bb2b7c2b58de7b648a62c7 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Tue, 26 Mar 2013 17:33:00 -0400 Subject: tracing: Fix race with update_max_tr_single and changing tracers The commit 34600f0e9 "tracing: Fix race with max_tr and changing tracers" fixed the updating of the main buffers with the race of changing tracers, but left out the fix to the updating of just a per cpu buffer. Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 4f1dade..7ba7fc7 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -744,8 +744,11 @@ update_max_tr_single(struct trace_array *tr, struct task_struct *tsk, int cpu) return; WARN_ON_ONCE(!irqs_disabled()); - if (WARN_ON_ONCE(!current_trace->allocated_snapshot)) + if (!current_trace->allocated_snapshot) { + /* Only the nop tracer should hit this when disabling */ + WARN_ON_ONCE(current_trace != &nop_trace); return; + } arch_spin_lock(&ftrace_max_lock); -- cgit v1.1 From 5000c418840b309251c5887f0b56503aae30f84c Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Tue, 26 Mar 2013 17:53:03 +0100 Subject: ftrace: Consistently restore trace function on sysctl enabling If we reenable ftrace via syctl, we currently set ftrace_trace_function based on the previous simplistic algorithm. This is inconsistent with what update_ftrace_function does. So better call that helper instead. Link: http://lkml.kernel.org/r/5151D26F.1070702@siemens.com Cc: stable@vger.kernel.org Signed-off-by: Jan Kiszka Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 6893d5a..cc4943c 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -4555,12 +4555,8 @@ ftrace_enable_sysctl(struct ctl_table *table, int write, ftrace_startup_sysctl(); /* we are starting ftrace again */ - if (ftrace_ops_list != &ftrace_list_end) { - if (ftrace_ops_list->next == &ftrace_list_end) - ftrace_trace_function = ftrace_ops_list->func; - else - ftrace_trace_function = ftrace_ops_list_func; - } + if (ftrace_ops_list != &ftrace_list_end) + update_ftrace_function(); } else { /* stopping ftrace calls (just send to ftrace_stub) */ -- cgit v1.1 From 395b97a3aeff0b8d949ee3e67bf8c11c5ffd6861 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Wed, 27 Mar 2013 09:31:28 -0400 Subject: ftrace: Do not call stub functions in control loop The function tracing control loop used by perf spits out a warning if the called function is not a control function. This is because the control function references a per cpu allocated data structure on struct ftrace_ops that is not allocated for other types of functions. commit 0a016409e42 "ftrace: Optimize the function tracer list loop" Had an optimization done to all function tracing loops to optimize for a single registered ops. Unfortunately, this allows for a slight race when tracing starts or ends, where the stub function might be called after the current registered ops is removed. In this case we get the following dump: root# perf stat -e ftrace:function sleep 1 [ 74.339105] WARNING: at include/linux/ftrace.h:209 ftrace_ops_control_func+0xde/0xf0() [ 74.349522] Hardware name: PRIMERGY RX200 S6 [ 74.357149] Modules linked in: sg igb iTCO_wdt ptp pps_core iTCO_vendor_support i7core_edac dca lpc_ich i2c_i801 coretemp edac_core crc32c_intel mfd_core ghash_clmulni_intel dm_multipath acpi_power_meter pcspk r microcode vhost_net tun macvtap macvlan nfsd kvm_intel kvm auth_rpcgss nfs_acl lockd sunrpc uinput xfs libcrc32c sd_mod crc_t10dif sr_mod cdrom mgag200 i2c_algo_bit drm_kms_helper ttm qla2xxx mptsas ahci drm li bahci scsi_transport_sas mptscsih libata scsi_transport_fc i2c_core mptbase scsi_tgt dm_mirror dm_region_hash dm_log dm_mod [ 74.446233] Pid: 1377, comm: perf Tainted: G W 3.9.0-rc1 #1 [ 74.453458] Call Trace: [ 74.456233] [] warn_slowpath_common+0x7f/0xc0 [ 74.462997] [] ? rcu_note_context_switch+0xa0/0xa0 [ 74.470272] [] ? __unregister_ftrace_function+0xa2/0x1a0 [ 74.478117] [] warn_slowpath_null+0x1a/0x20 [ 74.484681] [] ftrace_ops_control_func+0xde/0xf0 [ 74.491760] [] ftrace_call+0x5/0x2f [ 74.497511] [] ? ftrace_call+0x5/0x2f [ 74.503486] [] ? ftrace_call+0x5/0x2f [ 74.509500] [] ? synchronize_sched+0x5/0x50 [ 74.516088] [] ? _cond_resched+0x5/0x40 [ 74.522268] [] ? synchronize_sched+0x5/0x50 [ 74.528837] [] ? __unregister_ftrace_function+0xa2/0x1a0 [ 74.536696] [] ? _cond_resched+0x5/0x40 [ 74.542878] [] ? mutex_lock+0x1d/0x50 [ 74.548869] [] unregister_ftrace_function+0x27/0x50 [ 74.556243] [] perf_ftrace_event_register+0x9f/0x140 [ 74.563709] [] ? _cond_resched+0x5/0x40 [ 74.569887] [] ? mutex_lock+0x1d/0x50 [ 74.575898] [] perf_trace_destroy+0x2e/0x50 [ 74.582505] [] tp_perf_event_destroy+0x9/0x10 [ 74.589298] [] free_event+0x70/0x1a0 [ 74.595208] [] perf_event_release_kernel+0x69/0xa0 [ 74.602460] [] ? _cond_resched+0x5/0x40 [ 74.608667] [] put_event+0x90/0xc0 [ 74.614373] [] perf_release+0x10/0x20 [ 74.620367] [] __fput+0xf4/0x280 [ 74.625894] [] ____fput+0xe/0x10 [ 74.631387] [] task_work_run+0xa7/0xe0 [ 74.637452] [] do_notify_resume+0x71/0xb0 [ 74.643843] [] int_signal+0x12/0x17 To fix this a new ftrace_ops flag is added that denotes the ftrace_list_end ftrace_ops stub as just that, a stub. This flag is now checked in the control loop and the function is not called if the flag is set. Thanks to Jovi for not just reporting the bug, but also pointing out where the bug was in the code. Link: http://lkml.kernel.org/r/514A8855.7090402@redhat.com Link: http://lkml.kernel.org/r/1364377499-1900-15-git-send-email-jovi.zhangwei@huawei.com Tested-by: WANG Chao Reported-by: WANG Chao Reported-by: zhangwei(Jovi) Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 2 ++ kernel/trace/ftrace.c | 5 +++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index e5ca8ef..167abf9 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -89,6 +89,7 @@ typedef void (*ftrace_func_t)(unsigned long ip, unsigned long parent_ip, * that the call back has its own recursion protection. If it does * not set this, then the ftrace infrastructure will add recursion * protection for the caller. + * STUB - The ftrace_ops is just a place holder. */ enum { FTRACE_OPS_FL_ENABLED = 1 << 0, @@ -98,6 +99,7 @@ enum { FTRACE_OPS_FL_SAVE_REGS = 1 << 4, FTRACE_OPS_FL_SAVE_REGS_IF_SUPPORTED = 1 << 5, FTRACE_OPS_FL_RECURSION_SAFE = 1 << 6, + FTRACE_OPS_FL_STUB = 1 << 7, }; struct ftrace_ops { diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index cc4943c..7e89710 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -66,7 +66,7 @@ static struct ftrace_ops ftrace_list_end __read_mostly = { .func = ftrace_stub, - .flags = FTRACE_OPS_FL_RECURSION_SAFE, + .flags = FTRACE_OPS_FL_RECURSION_SAFE | FTRACE_OPS_FL_STUB, }; /* ftrace_enabled is a method to turn ftrace on or off */ @@ -4131,7 +4131,8 @@ ftrace_ops_control_func(unsigned long ip, unsigned long parent_ip, preempt_disable_notrace(); trace_recursion_set(TRACE_CONTROL_BIT); do_for_each_ftrace_op(op, ftrace_control_list) { - if (!ftrace_function_local_disabled(op) && + if (!(op->flags & FTRACE_OPS_FL_STUB) && + !ftrace_function_local_disabled(op) && ftrace_ops_test(op, ip)) op->func(ip, parent_ip, op, regs); } while_for_each_ftrace_op(op); -- cgit v1.1 From c12f9ea28e9fbe7b1f4cefc953bee33298370683 Mon Sep 17 00:00:00 2001 From: Sean Young Date: Sun, 7 Apr 2013 20:47:18 +0100 Subject: Revert "tty/8250_pnp: serial port detection regression since v3.7" This reverts commit 77e372a3d82e5e4878ce1962207edd766773cc76. Checking for disabled resources board breaks detection pnp on another board "AMI UEFI implementation (Version: 0406 Release Date: 06/06/2012)". I'm working with the reporter of the original bug to write and test a better fix. https://bugzilla.redhat.com/show_bug.cgi?id=928246 Signed-off-by: Sean Young Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/8250/8250_pnp.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c index b3455a9..35d9ab9 100644 --- a/drivers/tty/serial/8250/8250_pnp.c +++ b/drivers/tty/serial/8250/8250_pnp.c @@ -429,7 +429,6 @@ 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); @@ -440,12 +439,11 @@ 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)) - 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; + 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); uart.port.iotype = UPIO_PORT; } else if (pnp_mem_valid(dev, 0)) { uart.port.mapbase = pnp_mem_start(dev, 0); -- cgit v1.1 From 1b581f173992cded311f810346378f763a1f1e5d Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Sun, 7 Apr 2013 23:46:47 +0400 Subject: tty: mxser: fix cycle termination condition in mxser_probe() and mxser_module_init() There is a bug in resources deallocation code in mxser_probe() and mxser_module_init(). As soon as variable 'i' is unsigned int, cycle termination condition i >= 0 is always true. The patch fixes the issue. Signed-off-by: Alexey Khoroshilov Acked-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/tty/mxser.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c index 484b6a3..302909c 100644 --- a/drivers/tty/mxser.c +++ b/drivers/tty/mxser.c @@ -2643,9 +2643,9 @@ static int mxser_probe(struct pci_dev *pdev, mxvar_sdriver, brd->idx + i, &pdev->dev); if (IS_ERR(tty_dev)) { retval = PTR_ERR(tty_dev); - for (i--; i >= 0; i--) + for (; i > 0; i--) tty_unregister_device(mxvar_sdriver, - brd->idx + i); + brd->idx + i - 1); goto err_relbrd; } } @@ -2751,9 +2751,9 @@ static int __init mxser_module_init(void) tty_dev = tty_port_register_device(&brd->ports[i].port, mxvar_sdriver, brd->idx + i, NULL); if (IS_ERR(tty_dev)) { - for (i--; i >= 0; i--) + for (; i > 0; i--) tty_unregister_device(mxvar_sdriver, - brd->idx + i); + brd->idx + i - 1); for (i = 0; i < brd->info->nports; i++) tty_port_destroy(&brd->ports[i].port); free_irq(brd->irq, brd); -- cgit v1.1 From ec376a2ab97ec3be52ca282dc6ac102e805d1005 Mon Sep 17 00:00:00 2001 From: Dirk Brandewie Date: Thu, 4 Apr 2013 10:35:35 -0700 Subject: cpufreq / intel_pstate: Set timer timeout correctly The current calculation of the delay time is wrong and a cut and paste error from a previous experimental driver. This can result in the timeout being set to jiffies + 1 which setup the driver to race with itself if the APIC timer interrupt happens at just the right time. References: https://bugzilla.redhat.com/show_bug.cgi?id=920289 Reported-by: Adam Williamson Reported-and-tested-by: Parag Warudkar Signed-off-by: Dirk Brandewie Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/intel_pstate.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index ad72922..6133ef5 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -502,7 +502,6 @@ static inline void intel_pstate_set_sample_time(struct cpudata *cpu) sample_time = cpu->pstate_policy->sample_rate_ms; delay = msecs_to_jiffies(sample_time); - delay -= jiffies % delay; mod_timer_pinned(&cpu->timer, jiffies + delay); } -- cgit v1.1 From 6f389a8f1dd22a24f3d9afc2812b30d639e94625 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Sun, 7 Apr 2013 02:14:14 +0000 Subject: PM / reboot: call syscore_shutdown() after disable_nonboot_cpus() As commit 40dc166c (PM / Core: Introduce struct syscore_ops for core subsystems PM) say, syscore_ops operations should be carried with one CPU on-line and interrupts disabled. However, after commit f96972f2d (kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()), syscore_shutdown() is called before disable_nonboot_cpus(), so break the rules. We have a MIPS machine with a 8259A PIC, and there is an external timer (HPET) linked at 8259A. Since 8259A has been shutdown too early (by syscore_shutdown()), disable_nonboot_cpus() runs without timer interrupt, so it hangs and reboot fails. This patch call syscore_shutdown() a little later (after disable_nonboot_cpus()) to avoid reboot failure, this is the same way as poweroff does. For consistency, add disable_nonboot_cpus() to kernel_halt(). Signed-off-by: Huacai Chen Cc: Signed-off-by: Rafael J. Wysocki --- kernel/sys.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/sys.c b/kernel/sys.c index 39c9c4a..0da73cf 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -324,7 +324,6 @@ void kernel_restart_prepare(char *cmd) system_state = SYSTEM_RESTART; usermodehelper_disable(); device_shutdown(); - syscore_shutdown(); } /** @@ -370,6 +369,7 @@ void kernel_restart(char *cmd) { kernel_restart_prepare(cmd); disable_nonboot_cpus(); + syscore_shutdown(); if (!cmd) printk(KERN_EMERG "Restarting system.\n"); else @@ -395,6 +395,7 @@ static void kernel_shutdown_prepare(enum system_states state) void kernel_halt(void) { kernel_shutdown_prepare(SYSTEM_HALT); + disable_nonboot_cpus(); syscore_shutdown(); printk(KERN_EMERG "System halted.\n"); kmsg_dump(KMSG_DUMP_HALT); -- cgit v1.1 From ffcdedb667b6db8ee31c7efa76a3ec59d9c3b0fc Mon Sep 17 00:00:00 2001 From: "nikolay@redhat.com" Date: Sat, 6 Apr 2013 00:54:37 +0000 Subject: Revert "bonding: remove sysfs before removing devices" This reverts commit 4de79c737b200492195ebc54a887075327e1ec1d. This patch introduces a new bug which causes access to freed memory. In bond_uninit: list_del(&bond->bond_list); bond_list is linked in bond_net's dev_list which is freed by unregister_pernet_subsys. Signed-off-by: Nikolay Aleksandrov 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 171b10f1..a51241b 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4902,8 +4902,8 @@ static void __exit bonding_exit(void) bond_destroy_debugfs(); - unregister_pernet_subsys(&bond_net_ops); rtnl_link_unregister(&bond_link_ops); + unregister_pernet_subsys(&bond_net_ops); #ifdef CONFIG_NET_POLL_CONTROLLER /* -- cgit v1.1 From 69b0216ac255f523556fa3d4ff030d857eaaa37f Mon Sep 17 00:00:00 2001 From: "nikolay@redhat.com" Date: Sat, 6 Apr 2013 00:54:38 +0000 Subject: bonding: fix bonding_masters race condition in bond unloading While the bonding module is unloading, it is considered that after rtnl_link_unregister all bond devices are destroyed but since no synchronization mechanism exists, a new bond device can be created via bonding_masters before unregister_pernet_subsys which would lead to multiple problems (e.g. NULL pointer dereference, wrong RIP, list corruption). This patch fixes the issue by removing any bond devices left in the netns after bonding_masters is removed from sysfs. Signed-off-by: Nikolay Aleksandrov Acked-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index a51241b..07401a3 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4846,9 +4846,18 @@ static int __net_init bond_net_init(struct net *net) static void __net_exit bond_net_exit(struct net *net) { struct bond_net *bn = net_generic(net, bond_net_id); + struct bonding *bond, *tmp_bond; + LIST_HEAD(list); bond_destroy_sysfs(bn); bond_destroy_proc_dir(bn); + + /* Kill off any bonds created after unregistering bond rtnl ops */ + rtnl_lock(); + list_for_each_entry_safe(bond, tmp_bond, &bn->dev_list, bond_list) + unregister_netdevice_queue(bond->dev, &list); + unregister_netdevice_many(&list); + rtnl_unlock(); } static struct pernet_operations bond_net_ops = { -- cgit v1.1 From 4f7f46d32c9875004fae1d57ae3c02cc2e6cd6a3 Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 3 Apr 2013 14:17:37 +0800 Subject: tcm_vhost: Use vq->private_data to indicate if the endpoint is setup Currently, vs->vs_endpoint is used indicate if the endpoint is setup or not. It is set or cleared in vhost_scsi_set_endpoint() or vhost_scsi_clear_endpoint() under the vs->dev.mutex lock. However, when we check it in vhost_scsi_handle_vq(), we ignored the lock. Instead of using the vs->vs_endpoint and the vs->dev.mutex lock to indicate the status of the endpoint, we use per virtqueue vq->private_data to indicate it. In this way, we can only take the vq->mutex lock which is per queue and make the concurrent multiqueue process having less lock contention. Further, in the read side of vq->private_data, we can even do not take the lock if it is accessed in the vhost worker thread, because it is protected by "vhost rcu". (nab: Do s/VHOST_FEATURES/~VHOST_SCSI_FEATURES) Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 144 ++++++++++++++++++++++++++++++++-------------- 1 file changed, 101 insertions(+), 43 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index dd9614eb..6cda137 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -74,9 +74,8 @@ enum { struct vhost_scsi { /* Protected by vhost_scsi->dev.mutex */ - struct tcm_vhost_tpg *vs_tpg[VHOST_SCSI_MAX_TARGET]; + struct tcm_vhost_tpg **vs_tpg; char vs_vhost_wwpn[TRANSPORT_IQN_LEN]; - bool vs_endpoint; struct vhost_dev dev; struct vhost_virtqueue vqs[VHOST_SCSI_MAX_VQ]; @@ -582,6 +581,7 @@ static void tcm_vhost_submission_work(struct work_struct *work) static void vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) { + struct tcm_vhost_tpg **vs_tpg; struct virtio_scsi_cmd_req v_req; struct tcm_vhost_tpg *tv_tpg; struct tcm_vhost_cmd *tv_cmd; @@ -590,8 +590,16 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, int head, ret; u8 target; - /* Must use ioctl VHOST_SCSI_SET_ENDPOINT */ - if (unlikely(!vs->vs_endpoint)) + /* + * We can handle the vq only after the endpoint is setup by calling the + * VHOST_SCSI_SET_ENDPOINT ioctl. + * + * TODO: Check that we are running from vhost_worker which acts + * as read-side critical section for vhost kind of RCU. + * See the comments in struct vhost_virtqueue in drivers/vhost/vhost.h + */ + vs_tpg = rcu_dereference_check(vq->private_data, 1); + if (!vs_tpg) return; mutex_lock(&vq->mutex); @@ -661,7 +669,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, /* Extract the tpgt */ target = v_req.lun[1]; - tv_tpg = ACCESS_ONCE(vs->vs_tpg[target]); + tv_tpg = ACCESS_ONCE(vs_tpg[target]); /* Target does not exist, fail the request */ if (unlikely(!tv_tpg)) { @@ -780,6 +788,20 @@ static void vhost_scsi_handle_kick(struct vhost_work *work) vhost_scsi_handle_vq(vs, vq); } +static void vhost_scsi_flush_vq(struct vhost_scsi *vs, int index) +{ + vhost_poll_flush(&vs->dev.vqs[index].poll); +} + +static void vhost_scsi_flush(struct vhost_scsi *vs) +{ + int i; + + for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) + vhost_scsi_flush_vq(vs, i); + vhost_work_flush(&vs->dev, &vs->vs_completion_work); +} + /* * Called from vhost_scsi_ioctl() context to walk the list of available * tcm_vhost_tpg with an active struct tcm_vhost_nexus @@ -790,8 +812,10 @@ static int vhost_scsi_set_endpoint( { struct tcm_vhost_tport *tv_tport; struct tcm_vhost_tpg *tv_tpg; + struct tcm_vhost_tpg **vs_tpg; + struct vhost_virtqueue *vq; + int index, ret, i, len; bool match = false; - int index, ret; mutex_lock(&vs->dev.mutex); /* Verify that ring has been setup correctly. */ @@ -803,6 +827,15 @@ static int vhost_scsi_set_endpoint( } } + len = sizeof(vs_tpg[0]) * VHOST_SCSI_MAX_TARGET; + vs_tpg = kzalloc(len, GFP_KERNEL); + if (!vs_tpg) { + mutex_unlock(&vs->dev.mutex); + return -ENOMEM; + } + if (vs->vs_tpg) + memcpy(vs_tpg, vs->vs_tpg, len); + mutex_lock(&tcm_vhost_mutex); list_for_each_entry(tv_tpg, &tcm_vhost_list, tv_tpg_list) { mutex_lock(&tv_tpg->tv_tpg_mutex); @@ -817,14 +850,15 @@ static int vhost_scsi_set_endpoint( tv_tport = tv_tpg->tport; if (!strcmp(tv_tport->tport_name, t->vhost_wwpn)) { - if (vs->vs_tpg[tv_tpg->tport_tpgt]) { + if (vs->vs_tpg && vs->vs_tpg[tv_tpg->tport_tpgt]) { mutex_unlock(&tv_tpg->tv_tpg_mutex); mutex_unlock(&tcm_vhost_mutex); mutex_unlock(&vs->dev.mutex); + kfree(vs_tpg); return -EEXIST; } tv_tpg->tv_tpg_vhost_count++; - vs->vs_tpg[tv_tpg->tport_tpgt] = tv_tpg; + vs_tpg[tv_tpg->tport_tpgt] = tv_tpg; smp_mb__after_atomic_inc(); match = true; } @@ -835,12 +869,26 @@ static int vhost_scsi_set_endpoint( if (match) { memcpy(vs->vs_vhost_wwpn, t->vhost_wwpn, sizeof(vs->vs_vhost_wwpn)); - vs->vs_endpoint = true; + for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) { + vq = &vs->vqs[i]; + /* Flushing the vhost_work acts as synchronize_rcu */ + mutex_lock(&vq->mutex); + rcu_assign_pointer(vq->private_data, vs_tpg); + mutex_unlock(&vq->mutex); + } ret = 0; } else { ret = -EEXIST; } + /* + * Act as synchronize_rcu to make sure access to + * old vs->vs_tpg is finished. + */ + vhost_scsi_flush(vs); + kfree(vs->vs_tpg); + vs->vs_tpg = vs_tpg; + mutex_unlock(&vs->dev.mutex); return ret; } @@ -851,6 +899,8 @@ static int vhost_scsi_clear_endpoint( { struct tcm_vhost_tport *tv_tport; struct tcm_vhost_tpg *tv_tpg; + struct vhost_virtqueue *vq; + bool match = false; int index, ret, i; u8 target; @@ -862,9 +912,14 @@ static int vhost_scsi_clear_endpoint( goto err_dev; } } + + if (!vs->vs_tpg) { + mutex_unlock(&vs->dev.mutex); + return 0; + } + for (i = 0; i < VHOST_SCSI_MAX_TARGET; i++) { target = i; - tv_tpg = vs->vs_tpg[target]; if (!tv_tpg) continue; @@ -886,10 +941,27 @@ static int vhost_scsi_clear_endpoint( } tv_tpg->tv_tpg_vhost_count--; vs->vs_tpg[target] = NULL; - vs->vs_endpoint = false; + match = true; mutex_unlock(&tv_tpg->tv_tpg_mutex); } + if (match) { + for (i = 0; i < VHOST_SCSI_MAX_VQ; i++) { + vq = &vs->vqs[i]; + /* Flushing the vhost_work acts as synchronize_rcu */ + mutex_lock(&vq->mutex); + rcu_assign_pointer(vq->private_data, NULL); + mutex_unlock(&vq->mutex); + } + } + /* + * Act as synchronize_rcu to make sure access to + * old vs->vs_tpg is finished. + */ + vhost_scsi_flush(vs); + kfree(vs->vs_tpg); + vs->vs_tpg = NULL; mutex_unlock(&vs->dev.mutex); + return 0; err_tpg: @@ -899,6 +971,24 @@ err_dev: return ret; } +static int vhost_scsi_set_features(struct vhost_scsi *vs, u64 features) +{ + if (features & ~VHOST_SCSI_FEATURES) + return -EOPNOTSUPP; + + mutex_lock(&vs->dev.mutex); + if ((features & (1 << VHOST_F_LOG_ALL)) && + !vhost_log_access_ok(&vs->dev)) { + mutex_unlock(&vs->dev.mutex); + return -EFAULT; + } + vs->dev.acked_features = features; + smp_wmb(); + vhost_scsi_flush(vs); + mutex_unlock(&vs->dev.mutex); + return 0; +} + static int vhost_scsi_open(struct inode *inode, struct file *f) { struct vhost_scsi *s; @@ -939,38 +1029,6 @@ static int vhost_scsi_release(struct inode *inode, struct file *f) return 0; } -static void vhost_scsi_flush_vq(struct vhost_scsi *vs, int index) -{ - vhost_poll_flush(&vs->dev.vqs[index].poll); -} - -static void vhost_scsi_flush(struct vhost_scsi *vs) -{ - int i; - - 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) -{ - if (features & ~VHOST_SCSI_FEATURES) - return -EOPNOTSUPP; - - mutex_lock(&vs->dev.mutex); - if ((features & (1 << VHOST_F_LOG_ALL)) && - !vhost_log_access_ok(&vs->dev)) { - mutex_unlock(&vs->dev.mutex); - return -EFAULT; - } - vs->dev.acked_features = features; - smp_wmb(); - vhost_scsi_flush(vs); - mutex_unlock(&vs->dev.mutex); - return 0; -} - static long vhost_scsi_ioctl(struct file *f, unsigned int ioctl, unsigned long arg) { -- cgit v1.1 From dfd5d5692c7ddf27380511b80a3dc590acfc4eee Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 3 Apr 2013 14:17:38 +0800 Subject: tcm_vhost: Initialize vq->last_used_idx when set endpoint This patch fixes guest hang when booting seabios and guest. [ 0.576238] scsi0 : Virtio SCSI HBA [ 0.616754] virtio_scsi virtio1: request:id 0 is not a head! vq->last_used_idx is initialized only when /dev/vhost-scsi is opened or closed. vhost_scsi_open -> vhost_dev_init() -> vhost_vq_reset() vhost_scsi_release() -> vhost_dev_cleanup -> vhost_vq_reset() So, when guest talks to tcm_vhost after seabios does, vq->last_used_idx still contains the old valule for seabios. This confuses guest. Fix this by calling vhost_init_used() to init vq->last_used_idx when we set endpoint. Signed-off-by: Asias He 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 6cda137..c127731 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -874,6 +874,7 @@ static int vhost_scsi_set_endpoint( /* Flushing the vhost_work acts as synchronize_rcu */ mutex_lock(&vq->mutex); rcu_assign_pointer(vq->private_data, vs_tpg); + vhost_init_used(vq); mutex_unlock(&vq->mutex); } ret = 0; -- cgit v1.1 From 88c5b5ce5cb57af6ca2a7cf4d5715fa320448ff9 Mon Sep 17 00:00:00 2001 From: Michael Riesch Date: Mon, 8 Apr 2013 05:45:26 +0000 Subject: rtnetlink: Call nlmsg_parse() with correct header length Signed-off-by: Michael Riesch Cc: "David S. Miller" Cc: Greg Kroah-Hartman Cc: Jiri Benc Cc: "Theodore Ts'o" Cc: linux-kernel@vger.kernel.org Acked-by: Mark Rustad Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index b65441d..23854b5 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1072,7 +1072,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) rcu_read_lock(); cb->seq = net->dev_base_seq; - if (nlmsg_parse(cb->nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, + if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy) >= 0) { if (tb[IFLA_EXT_MASK]) @@ -1922,7 +1922,7 @@ static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) u32 ext_filter_mask = 0; u16 min_ifinfo_dump_size = 0; - if (nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, + if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, ifla_policy) >= 0) { if (tb[IFLA_EXT_MASK]) ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); -- cgit v1.1 From f9c41a62bba3f3f7ef3541b2a025e3371bcbba97 Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Sun, 7 Apr 2013 22:19:26 +0000 Subject: af_iucv: fix recvmsg by replacing skb_pull() function When receiving data messages, the "BUG_ON(skb->len < skb->data_len)" in the skb_pull() function triggers a kernel panic. Replace the skb_pull logic by a per skb offset as advised by Eric Dumazet. Signed-off-by: Ursula Braun Signed-off-by: Frank Blaschka Reviewed-by: Hendrik Brueckner Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- include/net/iucv/af_iucv.h | 8 ++++++++ net/iucv/af_iucv.c | 34 ++++++++++++++++------------------ 2 files changed, 24 insertions(+), 18 deletions(-) diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h index cc7c197..714cc9a 100644 --- a/include/net/iucv/af_iucv.h +++ b/include/net/iucv/af_iucv.h @@ -130,6 +130,14 @@ struct iucv_sock { enum iucv_tx_notify n); }; +struct iucv_skb_cb { + u32 class; /* target class of message */ + u32 tag; /* tag associated with message */ + u32 offset; /* offset for skb receival */ +}; + +#define IUCV_SKB_CB(__skb) ((struct iucv_skb_cb *)&((__skb)->cb[0])) + /* iucv socket options (SOL_IUCV) */ #define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */ #define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */ diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c index bf693582..206ce6d 100644 --- a/net/iucv/af_iucv.c +++ b/net/iucv/af_iucv.c @@ -49,12 +49,6 @@ static const u8 iprm_shutdown[8] = #define TRGCLS_SIZE (sizeof(((struct iucv_message *)0)->class)) -/* macros to set/get socket control buffer at correct offset */ -#define CB_TAG(skb) ((skb)->cb) /* iucv message tag */ -#define CB_TAG_LEN (sizeof(((struct iucv_message *) 0)->tag)) -#define CB_TRGCLS(skb) ((skb)->cb + CB_TAG_LEN) /* iucv msg target class */ -#define CB_TRGCLS_LEN (TRGCLS_SIZE) - #define __iucv_sock_wait(sk, condition, timeo, ret) \ do { \ DEFINE_WAIT(__wait); \ @@ -1141,7 +1135,7 @@ static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock, /* increment and save iucv message tag for msg_completion cbk */ txmsg.tag = iucv->send_tag++; - memcpy(CB_TAG(skb), &txmsg.tag, CB_TAG_LEN); + IUCV_SKB_CB(skb)->tag = txmsg.tag; if (iucv->transport == AF_IUCV_TRANS_HIPER) { atomic_inc(&iucv->msg_sent); @@ -1224,7 +1218,7 @@ static int iucv_fragment_skb(struct sock *sk, struct sk_buff *skb, int len) return -ENOMEM; /* copy target class to control buffer of new skb */ - memcpy(CB_TRGCLS(nskb), CB_TRGCLS(skb), CB_TRGCLS_LEN); + IUCV_SKB_CB(nskb)->class = IUCV_SKB_CB(skb)->class; /* copy data fragment */ memcpy(nskb->data, skb->data + copied, size); @@ -1256,7 +1250,7 @@ static void iucv_process_message(struct sock *sk, struct sk_buff *skb, /* store msg target class in the second 4 bytes of skb ctrl buffer */ /* Note: the first 4 bytes are reserved for msg tag */ - memcpy(CB_TRGCLS(skb), &msg->class, CB_TRGCLS_LEN); + IUCV_SKB_CB(skb)->class = msg->class; /* check for special IPRM messages (e.g. iucv_sock_shutdown) */ if ((msg->flags & IUCV_IPRMDATA) && len > 7) { @@ -1292,6 +1286,7 @@ static void iucv_process_message(struct sock *sk, struct sk_buff *skb, } } + IUCV_SKB_CB(skb)->offset = 0; if (sock_queue_rcv_skb(sk, skb)) skb_queue_head(&iucv_sk(sk)->backlog_skb_q, skb); } @@ -1327,6 +1322,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, unsigned int copied, rlen; struct sk_buff *skb, *rskb, *cskb; int err = 0; + u32 offset; msg->msg_namelen = 0; @@ -1348,13 +1344,14 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, return err; } - rlen = skb->len; /* real length of skb */ + offset = IUCV_SKB_CB(skb)->offset; + rlen = skb->len - offset; /* real length of skb */ copied = min_t(unsigned int, rlen, len); if (!rlen) sk->sk_shutdown = sk->sk_shutdown | RCV_SHUTDOWN; cskb = skb; - if (skb_copy_datagram_iovec(cskb, 0, msg->msg_iov, copied)) { + if (skb_copy_datagram_iovec(cskb, offset, msg->msg_iov, copied)) { if (!(flags & MSG_PEEK)) skb_queue_head(&sk->sk_receive_queue, skb); return -EFAULT; @@ -1372,7 +1369,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, * get the trgcls from the control buffer of the skb due to * fragmentation of original iucv message. */ err = put_cmsg(msg, SOL_IUCV, SCM_IUCV_TRGCLS, - CB_TRGCLS_LEN, CB_TRGCLS(skb)); + sizeof(IUCV_SKB_CB(skb)->class), + (void *)&IUCV_SKB_CB(skb)->class); if (err) { if (!(flags & MSG_PEEK)) skb_queue_head(&sk->sk_receive_queue, skb); @@ -1384,9 +1382,8 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, /* SOCK_STREAM: re-queue skb if it contains unreceived data */ if (sk->sk_type == SOCK_STREAM) { - skb_pull(skb, copied); - if (skb->len) { - skb_queue_head(&sk->sk_receive_queue, skb); + if (copied < rlen) { + IUCV_SKB_CB(skb)->offset = offset + copied; goto done; } } @@ -1405,6 +1402,7 @@ static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, spin_lock_bh(&iucv->message_q.lock); rskb = skb_dequeue(&iucv->backlog_skb_q); while (rskb) { + IUCV_SKB_CB(rskb)->offset = 0; if (sock_queue_rcv_skb(sk, rskb)) { skb_queue_head(&iucv->backlog_skb_q, rskb); @@ -1832,7 +1830,7 @@ static void iucv_callback_txdone(struct iucv_path *path, spin_lock_irqsave(&list->lock, flags); while (list_skb != (struct sk_buff *)list) { - if (!memcmp(&msg->tag, CB_TAG(list_skb), CB_TAG_LEN)) { + if (msg->tag != IUCV_SKB_CB(list_skb)->tag) { this = list_skb; break; } @@ -2093,6 +2091,7 @@ static int afiucv_hs_callback_rx(struct sock *sk, struct sk_buff *skb) skb_pull(skb, sizeof(struct af_iucv_trans_hdr)); skb_reset_transport_header(skb); skb_reset_network_header(skb); + IUCV_SKB_CB(skb)->offset = 0; spin_lock(&iucv->message_q.lock); if (skb_queue_empty(&iucv->backlog_skb_q)) { if (sock_queue_rcv_skb(sk, skb)) { @@ -2197,8 +2196,7 @@ static int afiucv_hs_rcv(struct sk_buff *skb, struct net_device *dev, /* fall through and receive zero length data */ case 0: /* plain data frame */ - memcpy(CB_TRGCLS(skb), &trans_hdr->iucv_hdr.class, - CB_TRGCLS_LEN); + IUCV_SKB_CB(skb)->class = trans_hdr->iucv_hdr.class; err = afiucv_hs_callback_rx(sk, skb); break; default: -- cgit v1.1 From 65d8013cbdc661f9cb7645148de1facfe3d0c88a Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Sun, 7 Apr 2013 22:19:27 +0000 Subject: qeth: fix qeth_wait_for_threads() deadlock for OSN devices Any recovery thread will deadlock when calling qeth_wait_for_threads(), most notably when triggering a recovery on an OSN device. This patch will store the recovery thread's task pointer on recovery invocation and check in qeth_wait_for_threads() respectively to avoid deadlocks. Signed-off-by: Stefan Raspl Signed-off-by: Frank Blaschka Reviewed-by: Ursula Braun Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core.h | 3 +++ drivers/s390/net/qeth_core_main.c | 19 +++++++++++++++++++ drivers/s390/net/qeth_l2_main.c | 2 ++ drivers/s390/net/qeth_l3_main.c | 2 ++ 4 files changed, 26 insertions(+) diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h index 8c06223..6ccb745 100644 --- a/drivers/s390/net/qeth_core.h +++ b/drivers/s390/net/qeth_core.h @@ -769,6 +769,7 @@ struct qeth_card { unsigned long thread_start_mask; unsigned long thread_allowed_mask; unsigned long thread_running_mask; + struct task_struct *recovery_task; spinlock_t ip_lock; struct list_head ip_list; struct list_head *ip_tbd_list; @@ -862,6 +863,8 @@ extern struct qeth_card_list_struct qeth_core_card_list; extern struct kmem_cache *qeth_core_header_cache; extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS]; +void qeth_set_recovery_task(struct qeth_card *); +void qeth_clear_recovery_task(struct qeth_card *); void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int); int qeth_threads_running(struct qeth_card *, unsigned long); int qeth_wait_for_threads(struct qeth_card *, unsigned long); diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 0d73a99..451f920 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -177,6 +177,23 @@ const char *qeth_get_cardname_short(struct qeth_card *card) return "n/a"; } +void qeth_set_recovery_task(struct qeth_card *card) +{ + card->recovery_task = current; +} +EXPORT_SYMBOL_GPL(qeth_set_recovery_task); + +void qeth_clear_recovery_task(struct qeth_card *card) +{ + card->recovery_task = NULL; +} +EXPORT_SYMBOL_GPL(qeth_clear_recovery_task); + +static bool qeth_is_recovery_task(const struct qeth_card *card) +{ + return card->recovery_task == current; +} + void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, int clear_start_mask) { @@ -205,6 +222,8 @@ EXPORT_SYMBOL_GPL(qeth_threads_running); int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) { + if (qeth_is_recovery_task(card)) + return 0; return wait_event_interruptible(card->wait_q, qeth_threads_running(card, threads) == 0); } diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index d690166..155b101 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -1143,6 +1143,7 @@ static int qeth_l2_recover(void *ptr) QETH_CARD_TEXT(card, 2, "recover2"); dev_warn(&card->gdev->dev, "A recovery process has been started for the device\n"); + qeth_set_recovery_task(card); __qeth_l2_set_offline(card->gdev, 1); rc = __qeth_l2_set_online(card->gdev, 1); if (!rc) @@ -1153,6 +1154,7 @@ static int qeth_l2_recover(void *ptr) dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); } + qeth_clear_recovery_task(card); qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); return 0; diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index 8710337..1f7edf1 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3515,6 +3515,7 @@ static int qeth_l3_recover(void *ptr) QETH_CARD_TEXT(card, 2, "recover2"); dev_warn(&card->gdev->dev, "A recovery process has been started for the device\n"); + qeth_set_recovery_task(card); __qeth_l3_set_offline(card->gdev, 1); rc = __qeth_l3_set_online(card->gdev, 1); if (!rc) @@ -3525,6 +3526,7 @@ static int qeth_l3_recover(void *ptr) dev_warn(&card->gdev->dev, "The qeth device driver " "failed to recover an error on the device\n"); } + qeth_clear_recovery_task(card); qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD); qeth_clear_thread_running_bit(card, QETH_RECOVER_THREAD); return 0; -- cgit v1.1 From 79e5f05edcbf85825d19eb8a425cd6c36c6c66f1 Mon Sep 17 00:00:00 2001 From: Christian Ruppert Date: Mon, 8 Apr 2013 13:05:30 +0530 Subject: ARC: Add implicit compiler barrier to raw_local_irq* functions ARC irqsave/restore macros were missing the compiler barrier, causing a stale load in irq-enabled region be used in irq-safe region, despite being changed, because the register holding the value was still live. The problem manifested as random crashes in timer code when stress testing ARCLinux (3.9-rc3) on a !SMP && !PREEMPT_COUNT Here's the exact sequence which caused this: (0). tv1[x] <----> t1 <---> t2 (1). mod_timer(t1) interrupted after it calls timer_pending() (2). mod_timer(t2) completes (3). mod_timer(t1) resumes but messes up the list (4). __runt_timers( ) uses bogus timer_list entry / crashes in timer->function Essentially mod_timer() was racing against itself and while the spinlock serialized the tv1[] timer link list, timer_pending() called outside the spinlock, cached timer link list element in a register. With low register pressure (and a deep register file), lack of barrier in raw_local_irqsave() as well as preempt_disable (!PREEMPT_COUNT version), there was nothing to force gcc to reload across the spinlock, causing a stale value in reg be used for link list manipulation - ensuing a corruption. ARcompact disassembly which shows the culprit generated code: mod_timer: push_s blink mov_s r13,r0 # timer, timer .. ###### timer_pending( ) ld_s r3,[r13] # <------ .entry.next LOADED brne r3, 0, @.L163 .L163: .. ###### spin_lock_irq( ) lr r5, [status32] # flags bic r4, r5, 6 # temp, flags, and.f 0, r5, 6 # flags, flag.nz r4 ###### detach_if_pending( ) begins tst_s r3,r3 <-------------- # timer_pending( ) checks timer->entry.next # r3 is NOT reloaded by gcc, using stale value beq.d @.L169 mov.eq r0,0 ##### detach_timer( ): __list_del( ) ld r4,[r13,4] # .entry.prev, D.31439 st r4,[r3,4] # .prev, D.31439 st r3,[r4] # .next, D.30246 We initially tried to fix this by adding barrier() to preempt_* macros for !PREEMPT_COUNT but Linus clarified that it was anything but wrong. http://www.spinics.net/lists/kernel/msg1512709.html [vgupta: updated commitlog] Reported-by/Signed-off-by: Christian Ruppert Cc: Christian Ruppert Cc: Pierrick Hascoet Debugged-by/Signed-off-by: Vineet Gupta Signed-off-by: Linus Torvalds --- arch/arc/include/asm/irqflags.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/arc/include/asm/irqflags.h b/arch/arc/include/asm/irqflags.h index ccd8480..eac0716 100644 --- a/arch/arc/include/asm/irqflags.h +++ b/arch/arc/include/asm/irqflags.h @@ -39,7 +39,7 @@ static inline long arch_local_irq_save(void) " flag.nz %0 \n" : "=r"(temp), "=r"(flags) : "n"((STATUS_E1_MASK | STATUS_E2_MASK)) - : "cc"); + : "memory", "cc"); return flags; } @@ -53,7 +53,8 @@ static inline void arch_local_irq_restore(unsigned long flags) __asm__ __volatile__( " flag %0 \n" : - : "r"(flags)); + : "r"(flags) + : "memory"); } /* @@ -73,7 +74,8 @@ static inline void arch_local_irq_disable(void) " and %0, %0, %1 \n" " flag %0 \n" : "=&r"(temp) - : "n"(~(STATUS_E1_MASK | STATUS_E2_MASK))); + : "n"(~(STATUS_E1_MASK | STATUS_E2_MASK)) + : "memory"); } /* @@ -85,7 +87,9 @@ static inline long arch_local_save_flags(void) __asm__ __volatile__( " lr %0, [status32] \n" - : "=&r"(temp)); + : "=&r"(temp) + : + : "memory"); return temp; } -- cgit v1.1 From b1ea3e6e3883c5191caa5be72b3a5b9c32812e38 Mon Sep 17 00:00:00 2001 From: Calvin Owens Date: Sun, 7 Apr 2013 21:01:19 -0500 Subject: drm/nouveau: fix unconditional return waiting on memory Typo in nv50_display_flip_wait allows page flipping to run ahead before memory has time to settle. Signed-off-by: Calvin Owens Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_display.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nv50_display.c b/drivers/gpu/drm/nouveau/nv50_display.c index 7f0e6c3..1ddc03e 100644 --- a/drivers/gpu/drm/nouveau/nv50_display.c +++ b/drivers/gpu/drm/nouveau/nv50_display.c @@ -479,7 +479,7 @@ 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); + flip->chan->data) return true; usleep_range(1, 2); return false; -- cgit v1.1 From c802d759623acbd6e1ee9fbdabae89159a513913 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 9 Apr 2013 10:07:19 +0800 Subject: netrom: fix invalid use of sizeof in nr_recvmsg() sizeof() when applied to a pointer typed expression gives the size of the pointer, not that of the pointed data. Introduced by commit 3ce5ef(netrom: fix info leak via msg_name in nr_recvmsg) Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller --- net/netrom/af_netrom.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c index 7fcb307..103bd70 100644 --- a/net/netrom/af_netrom.c +++ b/net/netrom/af_netrom.c @@ -1173,7 +1173,7 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock, } if (sax != NULL) { - memset(sax, 0, sizeof(sax)); + memset(sax, 0, sizeof(*sax)); sax->sax25_family = AF_NETROM; skb_copy_from_linear_data_offset(skb, 7, sax->sax25_call.ax25_call, AX25_ADDR_LEN); -- cgit v1.1 From b2dfaa8d33cee9dd4ed78979f5d70063df546101 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Mon, 8 Apr 2013 14:21:31 +1000 Subject: m68k: define a local gpio_request_one() function Compiling for linux-3.9-rc1 and later fails with: drivers/gpio/devres.c: In function 'devm_gpio_request_one': drivers/gpio/devres.c:90:2: error: implicit declaration of function 'gpio_request_one' [-Werror=implicit-function-declaration] So provide a local gpio_request_one() function. Code largely borrowed from blackfin's local gpio_request_one() function. Signed-off-by: Greg Ungerer Acked-by: Linus Walleij --- arch/m68k/include/asm/gpio.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/m68k/include/asm/gpio.h b/arch/m68k/include/asm/gpio.h index 4395ffc..8cc8343 100644 --- a/arch/m68k/include/asm/gpio.h +++ b/arch/m68k/include/asm/gpio.h @@ -86,4 +86,24 @@ static inline int gpio_cansleep(unsigned gpio) return gpio < MCFGPIO_PIN_MAX ? 0 : __gpio_cansleep(gpio); } +static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label) +{ + int err; + + err = gpio_request(gpio, label); + if (err) + return err; + + if (flags & GPIOF_DIR_IN) + err = gpio_direction_input(gpio); + else + err = gpio_direction_output(gpio, + (flags & GPIOF_INIT_HIGH) ? 1 : 0); + + if (err) + gpio_free(gpio); + + return err; +} + #endif -- cgit v1.1 From 3480a2125923e4b7a56d79efc76743089bf273fc Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 9 Apr 2013 14:16:04 +0800 Subject: can: gw: use kmem_cache_free() instead of kfree() Memory allocated by kmem_cache_alloc() should be freed using kmem_cache_free(), not kfree(). Cc: linux-stable # >= v3.2 Signed-off-by: Wei Yongjun Acked-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- net/can/gw.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/net/can/gw.c b/net/can/gw.c index 2d117dc..117814a 100644 --- a/net/can/gw.c +++ b/net/can/gw.c @@ -466,7 +466,7 @@ static int cgw_notifier(struct notifier_block *nb, if (gwj->src.dev == dev || gwj->dst.dev == dev) { hlist_del(&gwj->list); cgw_unregister_filter(gwj); - kfree(gwj); + kmem_cache_free(cgw_cache, gwj); } } } @@ -864,7 +864,7 @@ static void cgw_remove_all_jobs(void) hlist_for_each_entry_safe(gwj, nx, &cgw_list, list) { hlist_del(&gwj->list); cgw_unregister_filter(gwj); - kfree(gwj); + kmem_cache_free(cgw_cache, gwj); } } @@ -920,7 +920,7 @@ static int cgw_remove_job(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) hlist_del(&gwj->list); cgw_unregister_filter(gwj); - kfree(gwj); + kmem_cache_free(cgw_cache, gwj); err = 0; break; } -- cgit v1.1 From cab1e0a36c9dd0b0671fb84197ed294513f5adc1 Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Fri, 29 Mar 2013 16:20:09 +0100 Subject: ARM: clk-imx35: Bugfix iomux clock This patch enables iomuxc_gate clock. It is necessary to be able to reconfigure iomux pads. Without this clock enabled, the clk_disable_unused function will disable this clock and the iomux pads are not configurable anymore. This happens at every boot. After a reboot (watchdog system reset) the clock is not enabled again, so all iomux pad reconfigurations in boot code are without effect. The iomux pads should be always configurable, so this patch always enables it. Signed-off-by: Markus Pargmann Cc: stable@vger.kernel.org Signed-off-by: Sascha Hauer Signed-off-by: Shawn Guo --- 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 e13a8fa..b95898a 100644 --- a/arch/arm/mach-imx/clk-imx35.c +++ b/arch/arm/mach-imx/clk-imx35.c @@ -265,6 +265,7 @@ int __init mx35_clocks_init(void) clk_prepare_enable(clk[iim_gate]); clk_prepare_enable(clk[emi_gate]); clk_prepare_enable(clk[max_gate]); + clk_prepare_enable(clk[iomuxc_gate]); /* * SCC is needed to boot via mmc after a watchdog reset. The clock code -- cgit v1.1 From 75498083e25e96932ad998ffdeadb17234c68d3a Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Fri, 29 Mar 2013 16:20:10 +0100 Subject: ARM: imx35 Bugfix admux clock The admux clock seems to be the audmux clock as tests show. audmux does not work without this clock enabled. Currently imx35 does not register a clock device for audmux. This patch adds this registration. imx-audmux driver already handles a clock device, so no changes are necessary there. Signed-off-by: Markus Pargmann Cc: stable@vger.kernel.org Signed-off-by: Sascha Hauer Signed-off-by: Shawn Guo --- 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 b95898a..2193c83 100644 --- a/arch/arm/mach-imx/clk-imx35.c +++ b/arch/arm/mach-imx/clk-imx35.c @@ -257,6 +257,7 @@ int __init mx35_clocks_init(void) clk_register_clkdev(clk[wdog_gate], NULL, "imx2-wdt.0"); clk_register_clkdev(clk[nfc_div], NULL, "imx25-nand.0"); clk_register_clkdev(clk[csi_gate], NULL, "mx3-camera.0"); + clk_register_clkdev(clk[admux_gate], "audmux", NULL); clk_prepare_enable(clk[spba_gate]); clk_prepare_enable(clk[gpio1_gate]); -- cgit v1.1 From 2bb4b70b1dbb45f0c1a3ba98066e6635d8aa3fe0 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 3 Apr 2013 23:50:09 +0800 Subject: ARM: imx: provide twd clock lookup from device tree While booting from device tree, imx6q used to provide twd clock lookup by calling clk_register_clkdev() in clock driver. However, the commit bd60345 (ARM: use device tree to get smp_twd clock) forces DT boot to look up the clock from device tree. It causes the failure below when twd driver tries to get the clock, and hence kernel has to calibrate the local timer frequency. smp_twd: clock not found -2 ... Calibrating local timer... 396.13MHz. Fix the regression by providing twd clock lookup from device tree, and remove the unused twd clk_register_clkdev() call from clock driver. Signed-off-by: Shawn Guo --- arch/arm/boot/dts/imx6qdl.dtsi | 1 + arch/arm/mach-imx/clk-imx6q.c | 1 - 2 files changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi index 06ec460..281a223 100644 --- a/arch/arm/boot/dts/imx6qdl.dtsi +++ b/arch/arm/boot/dts/imx6qdl.dtsi @@ -91,6 +91,7 @@ compatible = "arm,cortex-a9-twd-timer"; reg = <0x00a00600 0x20>; interrupts = <1 13 0xf01>; + clocks = <&clks 15>; }; L2: l2-cache@00a02000 { diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c index 2f9ff93..22a3021 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -443,7 +443,6 @@ int __init mx6q_clocks_init(void) clk_register_clkdev(clk[gpt_ipg], "ipg", "imx-gpt.0"); clk_register_clkdev(clk[gpt_ipg_per], "per", "imx-gpt.0"); - clk_register_clkdev(clk[twd], NULL, "smp_twd"); clk_register_clkdev(clk[cko1_sel], "cko1_sel", NULL); clk_register_clkdev(clk[ahb], "ahb", NULL); clk_register_clkdev(clk[cko1], "cko1", NULL); -- cgit v1.1 From e8094b2c17126c7dfdeafa296f206a4a3b122d23 Mon Sep 17 00:00:00 2001 From: Dirk Behme Date: Thu, 4 Apr 2013 16:03:29 +0200 Subject: ARM i.MX6: Fix ldb_di clock selection According to the recent i.MX6 Quad technical reference manual, mode 0x4 (100b) of the CCM_CS2DCR register (address 0x020C402C) bits [11-9] and [14-12] select the PLL3 clock, and not the PLL3 PFD1 540M clock. In our code, the PLL3 root clock is named 'pll3_usb_otg', select this instead of the 540M clock. Signed-off-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 22a3021..d38e54f 100644 --- a/arch/arm/mach-imx/clk-imx6q.c +++ b/arch/arm/mach-imx/clk-imx6q.c @@ -115,7 +115,7 @@ static const char *gpu2d_core_sels[] = { "axi", "pll3_usb_otg", "pll2_pfd0_352m" static const char *gpu3d_core_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd2_396m", }; static const char *gpu3d_shader_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll2_pfd1_594m", "pll2_pfd9_720m", }; static const char *ipu_sels[] = { "mmdc_ch0_axi", "pll2_pfd2_396m", "pll3_120m", "pll3_pfd1_540m", }; -static const char *ldb_di_sels[] = { "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_pfd1_540m", }; +static const char *ldb_di_sels[] = { "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "mmdc_ch1_axi", "pll3_usb_otg", }; static const char *ipu_di_pre_sels[] = { "mmdc_ch0_axi", "pll3_usb_otg", "pll5_video", "pll2_pfd0_352m", "pll2_pfd2_396m", "pll3_pfd1_540m", }; static const char *ipu1_di0_sels[] = { "ipu1_di0_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", }; static const char *ipu1_di1_sels[] = { "ipu1_di1_pre", "dummy", "dummy", "ldb_di0", "ldb_di1", }; -- cgit v1.1 From b530f742ac27460d41d35b638ad6aad92044a982 Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 8 Apr 2013 21:39:45 +0900 Subject: ARM: S3C24XX: Correct NR_IRQS definition for s3c2440 Due to NR_IRQS being incorrectly defined not all IRQ domains can be registered for S3C2440. It causes following errors on a s3c2440 SoC based board: NR_IRQS:89 S3C2440: IRQ Support irq: clearing pending status 00000002 ------------[ cut here ]------------ WARNING: at kernel/irq/irqdomain.c:234 0xc0056ed0() ... irq: could not create irq-domain ... s3c2410-wdt s3c2410-wdt: failed to install irq (-22) s3c2410-wdt: probe of s3c2410-wdt failed with error -22 ... samsung-uart s3c2440-uart.0: cannot get irq 74 Fix this by increasing NR_IRQS to at least (IRQ_S3C2443_AC97 + 1) if CPU_S3C2440 is selected, so the subintc IRQ domain gets properly registered. Signed-off-by: Tomasz Figa Signed-off-by: Sylwester Nawrocki Acked-by: Heiko Stuebner Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c24xx/include/mach/irqs.h | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/arm/mach-s3c24xx/include/mach/irqs.h b/arch/arm/mach-s3c24xx/include/mach/irqs.h index b7a9f4d..1e73f5f 100644 --- a/arch/arm/mach-s3c24xx/include/mach/irqs.h +++ b/arch/arm/mach-s3c24xx/include/mach/irqs.h @@ -188,10 +188,8 @@ #if defined(CONFIG_CPU_S3C2416) #define NR_IRQS (IRQ_S3C2416_I2S1 + 1) -#elif defined(CONFIG_CPU_S3C2443) -#define NR_IRQS (IRQ_S3C2443_AC97+1) #else -#define NR_IRQS (IRQ_S3C2440_AC97+1) +#define NR_IRQS (IRQ_S3C2443_AC97 + 1) #endif /* compatibility define. */ -- cgit v1.1 From 646dd2f0a980949b05042792fbadd72b735c3eda Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 9 Apr 2013 23:52:21 +0900 Subject: ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller The external pending interrupt register address (EINTPEND) offset is 0xa8, not 0x08. Without this patch the external interrupts are not properly acknowledged, which may lead to an interrupt storm and the system hang as soon as any external interrupt is requested. Signed-off-by: Sylwester Nawrocki Reviewed-by: Heiko Stuebner Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c24xx/irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-s3c24xx/irq.c b/arch/arm/mach-s3c24xx/irq.c index cb9f5e0..d8ba9be 100644 --- a/arch/arm/mach-s3c24xx/irq.c +++ b/arch/arm/mach-s3c24xx/irq.c @@ -500,7 +500,7 @@ struct s3c_irq_intc *s3c24xx_init_intc(struct device_node *np, base = (void *)0xfd000000; intc->reg_mask = base + 0xa4; - intc->reg_pending = base + 0x08; + intc->reg_pending = base + 0xa8; irq_num = 20; irq_start = S3C2410_IRQ(32); irq_offset = 4; -- cgit v1.1 From 51a246aa5c0a14b3d34a5c6d3c9e271c784b127f Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 9 Apr 2013 18:03:25 +0100 Subject: regmap: Back out work buffer fix This reverts commit bc8ce4 (regmap: don't corrupt work buffer in _regmap_raw_write()) since it turns out that it can cause issues when taken in isolation from the other changes in -next that lead to its discovery. On the basis that nobody noticed the problems for quite some time without that subsequent work let's drop it from v3.9. Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index d34adef..58cfb32 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -943,7 +943,8 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg, unsigned int ival; int val_bytes = map->format.val_bytes; for (i = 0; i < val_len / val_bytes; i++) { - ival = map->format.parse_val(val + (i * val_bytes)); + memcpy(map->work_buf, val + (i * val_bytes), val_bytes); + ival = map->format.parse_val(map->work_buf); ret = regcache_write(map, reg + (i * map->reg_stride), ival); if (ret) { -- cgit v1.1 From 3e2e0d2c222bdf5bafd722dec1618fa6073ef372 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Tue, 9 Apr 2013 12:33:07 -0400 Subject: tile: comment assumption about __insn_mtspr for The arch_local_irq_save(), etc., routines are required to function as compiler barriers. They do, but it's subtle and requires knowing that the gcc builtin __insn_mtspr() is marked as a memory clobber. Provide a comment explaining the assumption. Signed-off-by: Chris Metcalf [ This came about from me wondering about the synchronization rules of __insn_mtspr() - Linus ] Signed-off-by: Linus Torvalds --- arch/tile/include/asm/irqflags.h | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/tile/include/asm/irqflags.h b/arch/tile/include/asm/irqflags.h index 241c0bb..c96f9bb 100644 --- a/arch/tile/include/asm/irqflags.h +++ b/arch/tile/include/asm/irqflags.h @@ -40,7 +40,15 @@ #include #include -/* Set and clear kernel interrupt masks. */ +/* + * Set and clear kernel interrupt masks. + * + * NOTE: __insn_mtspr() is a compiler builtin marked as a memory + * clobber. We rely on it being equivalent to a compiler barrier in + * this code since arch_local_irq_save() and friends must act as + * compiler barriers. This compiler semantic is baked into enough + * places that the compiler will maintain it going forward. + */ #if CHIP_HAS_SPLIT_INTR_MASK() #if INT_PERF_COUNT < 32 || INT_AUX_PERF_COUNT < 32 || INT_MEM_ERROR >= 32 # error Fix assumptions about which word various interrupts are in -- cgit v1.1 From fa332941c0c7c00e3420078268b7558d0ef792b5 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 9 Apr 2013 12:56:52 -0400 Subject: NFSv4: Fix another potential state manager deadlock Don't hold the NFSv4 sequence id while we check for open permission. The call to ACCESS may block due to reboot recovery. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 26431cf..0ad025e 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1046,6 +1046,7 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) /* Save the delegation */ nfs4_stateid_copy(&stateid, &delegation->stateid); rcu_read_unlock(); + nfs_release_seqid(opendata->o_arg.seqid); ret = nfs_may_open(state->inode, state->owner->so_cred, open_mode); if (ret != 0) goto out; -- cgit v1.1 From ca10b9e9a8ca7342ee07065289cbe74ac128c169 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 8 Apr 2013 17:58:11 +0000 Subject: selinux: add a skb_owned_by() hook Commit 90ba9b1986b5ac (tcp: tcp_make_synack() can use alloc_skb()) broke certain SELinux/NetLabel configurations by no longer correctly assigning the sock to the outgoing SYNACK packet. Cost of atomic operations on the LISTEN socket is quite big, and we would like it to happen only if really needed. This patch introduces a new security_ops->skb_owned_by() method, that is a void operation unless selinux is active. Reported-by: Miroslav Vadkerti Diagnosed-by: Paul Moore Signed-off-by: Eric Dumazet Cc: "David S. Miller" Cc: linux-security-module@vger.kernel.org Acked-by: James Morris Tested-by: Paul Moore Acked-by: Paul Moore Signed-off-by: David S. Miller --- include/linux/security.h | 8 ++++++++ net/ipv4/tcp_output.c | 1 + security/capability.c | 6 ++++++ security/security.c | 5 +++++ security/selinux/hooks.c | 7 +++++++ 5 files changed, 27 insertions(+) diff --git a/include/linux/security.h b/include/linux/security.h index eee7478..6c3a78a 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1638,6 +1638,7 @@ struct security_operations { int (*tun_dev_attach_queue) (void *security); int (*tun_dev_attach) (struct sock *sk, void *security); int (*tun_dev_open) (void *security); + void (*skb_owned_by) (struct sk_buff *skb, struct sock *sk); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM @@ -2588,6 +2589,8 @@ int security_tun_dev_attach_queue(void *security); int security_tun_dev_attach(struct sock *sk, void *security); int security_tun_dev_open(void *security); +void security_skb_owned_by(struct sk_buff *skb, struct sock *sk); + #else /* CONFIG_SECURITY_NETWORK */ static inline int security_unix_stream_connect(struct sock *sock, struct sock *other, @@ -2779,6 +2782,11 @@ static inline int security_tun_dev_open(void *security) { return 0; } + +static inline void security_skb_owned_by(struct sk_buff *skb, struct sock *sk) +{ +} + #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 5d0b438..b44cf81 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -2709,6 +2709,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst, skb_reserve(skb, MAX_TCP_HEADER); skb_dst_set(skb, dst); + security_skb_owned_by(skb, sk); mss = dst_metric_advmss(dst); if (tp->rx_opt.user_mss && tp->rx_opt.user_mss < mss) diff --git a/security/capability.c b/security/capability.c index 5797750..6783c3e 100644 --- a/security/capability.c +++ b/security/capability.c @@ -737,6 +737,11 @@ static int cap_tun_dev_open(void *security) { return 0; } + +static void cap_skb_owned_by(struct sk_buff *skb, struct sock *sk) +{ +} + #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM @@ -1071,6 +1076,7 @@ void __init security_fixup_ops(struct security_operations *ops) set_to_cap_if_null(ops, tun_dev_open); set_to_cap_if_null(ops, tun_dev_attach_queue); set_to_cap_if_null(ops, tun_dev_attach); + set_to_cap_if_null(ops, skb_owned_by); #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM set_to_cap_if_null(ops, xfrm_policy_alloc_security); diff --git a/security/security.c b/security/security.c index 7b88c6a..03f248b 100644 --- a/security/security.c +++ b/security/security.c @@ -1290,6 +1290,11 @@ int security_tun_dev_open(void *security) } EXPORT_SYMBOL(security_tun_dev_open); +void security_skb_owned_by(struct sk_buff *skb, struct sock *sk) +{ + security_ops->skb_owned_by(skb, sk); +} + #endif /* CONFIG_SECURITY_NETWORK */ #ifdef CONFIG_SECURITY_NETWORK_XFRM diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index 2fa28c8..7171a95 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -51,6 +51,7 @@ #include #include #include /* for local_port_range[] */ +#include #include /* struct or_callable used in sock_rcv_skb */ #include #include @@ -4363,6 +4364,11 @@ static void selinux_inet_conn_established(struct sock *sk, struct sk_buff *skb) selinux_skb_peerlbl_sid(skb, family, &sksec->peer_sid); } +static void selinux_skb_owned_by(struct sk_buff *skb, struct sock *sk) +{ + skb_set_owner_w(skb, sk); +} + static int selinux_secmark_relabel_packet(u32 sid) { const struct task_security_struct *__tsec; @@ -5664,6 +5670,7 @@ static struct security_operations selinux_ops = { .tun_dev_attach_queue = selinux_tun_dev_attach_queue, .tun_dev_attach = selinux_tun_dev_attach, .tun_dev_open = selinux_tun_dev_open, + .skb_owned_by = selinux_skb_owned_by, #ifdef CONFIG_SECURITY_NETWORK_XFRM .xfrm_policy_alloc_security = selinux_xfrm_policy_alloc, -- cgit v1.1 From 386afc91144b36b42117b0092893f15bc8798a80 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 9 Apr 2013 10:48:33 -0700 Subject: spinlocks and preemption points need to be at least compiler barriers In UP and non-preempt respectively, the spinlocks and preemption disable/enable points are stubbed out entirely, because there is no regular code that can ever hit the kind of concurrency they are meant to protect against. However, while there is no regular code that can cause scheduling, we _do_ end up having some exceptional (literally!) code that can do so, and that we need to make sure does not ever get moved into the critical region by the compiler. In particular, get_user() and put_user() is generally implemented as inline asm statements (even if the inline asm may then make a call instruction to call out-of-line), and can obviously cause a page fault and IO as a result. If that inline asm has been scheduled into the middle of a preemption-safe (or spinlock-protected) code region, we obviously lose. Now, admittedly this is *very* unlikely to actually ever happen, and we've not seen examples of actual bugs related to this. But partly exactly because it's so hard to trigger and the resulting bug is so subtle, we should be extra careful to get this right. So make sure that even when preemption is disabled, and we don't have to generate any actual *code* to explicitly tell the system that we are in a preemption-disabled region, we need to at least tell the compiler not to move things around the critical region. This patch grew out of the same discussion that caused commits 79e5f05edcbf ("ARC: Add implicit compiler barrier to raw_local_irq* functions") and 3e2e0d2c222b ("tile: comment assumption about __insn_mtspr for ") to come about. Note for stable: use discretion when/if applying this. As mentioned, this bug may never have actually bitten anybody, and gcc may never have done the required code motion for it to possibly ever trigger in practice. Cc: stable@vger.kernel.org Cc: Steven Rostedt Cc: Peter Zijlstra Signed-off-by: Linus Torvalds --- include/linux/preempt.h | 22 ++++++++++++++-------- include/linux/spinlock_up.h | 29 ++++++++++++++++++----------- 2 files changed, 32 insertions(+), 19 deletions(-) diff --git a/include/linux/preempt.h b/include/linux/preempt.h index 5a710b9..87a03c7 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -93,14 +93,20 @@ do { \ #else /* !CONFIG_PREEMPT_COUNT */ -#define preempt_disable() do { } while (0) -#define sched_preempt_enable_no_resched() do { } while (0) -#define preempt_enable_no_resched() do { } while (0) -#define preempt_enable() do { } while (0) - -#define preempt_disable_notrace() do { } while (0) -#define preempt_enable_no_resched_notrace() do { } while (0) -#define preempt_enable_notrace() do { } while (0) +/* + * Even if we don't have any preemption, we need preempt disable/enable + * to be barriers, so that we don't have things like get_user/put_user + * that can cause faults and scheduling migrate into our preempt-protected + * region. + */ +#define preempt_disable() barrier() +#define sched_preempt_enable_no_resched() barrier() +#define preempt_enable_no_resched() barrier() +#define preempt_enable() barrier() + +#define preempt_disable_notrace() barrier() +#define preempt_enable_no_resched_notrace() barrier() +#define preempt_enable_notrace() barrier() #endif /* CONFIG_PREEMPT_COUNT */ diff --git a/include/linux/spinlock_up.h b/include/linux/spinlock_up.h index a26e2fb..e2369c16 100644 --- a/include/linux/spinlock_up.h +++ b/include/linux/spinlock_up.h @@ -16,7 +16,10 @@ * In the debug case, 1 means unlocked, 0 means locked. (the values * are inverted, to catch initialization bugs) * - * No atomicity anywhere, we are on UP. + * No atomicity anywhere, we are on UP. However, we still need + * the compiler barriers, because we do not want the compiler to + * move potentially faulting instructions (notably user accesses) + * into the locked sequence, resulting in non-atomic execution. */ #ifdef CONFIG_DEBUG_SPINLOCK @@ -25,6 +28,7 @@ static inline void arch_spin_lock(arch_spinlock_t *lock) { lock->slock = 0; + barrier(); } static inline void @@ -32,6 +36,7 @@ arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags) { local_irq_save(flags); lock->slock = 0; + barrier(); } static inline int arch_spin_trylock(arch_spinlock_t *lock) @@ -39,32 +44,34 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) char oldval = lock->slock; lock->slock = 0; + barrier(); return oldval > 0; } static inline void arch_spin_unlock(arch_spinlock_t *lock) { + barrier(); lock->slock = 1; } /* * Read-write spinlocks. No debug version. */ -#define arch_read_lock(lock) do { (void)(lock); } while (0) -#define arch_write_lock(lock) do { (void)(lock); } while (0) -#define arch_read_trylock(lock) ({ (void)(lock); 1; }) -#define arch_write_trylock(lock) ({ (void)(lock); 1; }) -#define arch_read_unlock(lock) do { (void)(lock); } while (0) -#define arch_write_unlock(lock) do { (void)(lock); } while (0) +#define arch_read_lock(lock) do { barrier(); (void)(lock); } while (0) +#define arch_write_lock(lock) do { barrier(); (void)(lock); } while (0) +#define arch_read_trylock(lock) ({ barrier(); (void)(lock); 1; }) +#define arch_write_trylock(lock) ({ barrier(); (void)(lock); 1; }) +#define arch_read_unlock(lock) do { barrier(); (void)(lock); } while (0) +#define arch_write_unlock(lock) do { barrier(); (void)(lock); } while (0) #else /* DEBUG_SPINLOCK */ #define arch_spin_is_locked(lock) ((void)(lock), 0) /* for sched.c and kernel_lock.c: */ -# define arch_spin_lock(lock) do { (void)(lock); } while (0) -# define arch_spin_lock_flags(lock, flags) do { (void)(lock); } while (0) -# define arch_spin_unlock(lock) do { (void)(lock); } while (0) -# define arch_spin_trylock(lock) ({ (void)(lock); 1; }) +# define arch_spin_lock(lock) do { barrier(); (void)(lock); } while (0) +# define arch_spin_lock_flags(lock, flags) do { barrier(); (void)(lock); } while (0) +# define arch_spin_unlock(lock) do { barrier(); (void)(lock); } while (0) +# define arch_spin_trylock(lock) ({ barrier(); (void)(lock); 1; }) #endif /* DEBUG_SPINLOCK */ #define arch_spin_is_contended(lock) (((void)(lock), 0)) -- cgit v1.1 From 52f21999c7b921a0390708b66ed286282c2e4bee Mon Sep 17 00:00:00 2001 From: Al Viro Date: Thu, 28 Mar 2013 13:30:23 -0400 Subject: ecryptfs: close rmmod race Signed-off-by: Al Viro --- fs/ecryptfs/miscdev.c | 14 ++------------ 1 file changed, 2 insertions(+), 12 deletions(-) diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c index 412e6ed..e4141f2 100644 --- a/fs/ecryptfs/miscdev.c +++ b/fs/ecryptfs/miscdev.c @@ -80,13 +80,6 @@ ecryptfs_miscdev_open(struct inode *inode, struct file *file) int rc; mutex_lock(&ecryptfs_daemon_hash_mux); - rc = try_module_get(THIS_MODULE); - if (rc == 0) { - rc = -EIO; - printk(KERN_ERR "%s: Error attempting to increment module use " - "count; rc = [%d]\n", __func__, rc); - goto out_unlock_daemon_list; - } rc = ecryptfs_find_daemon_by_euid(&daemon); if (!rc) { rc = -EINVAL; @@ -96,7 +89,7 @@ ecryptfs_miscdev_open(struct inode *inode, struct file *file) if (rc) { printk(KERN_ERR "%s: Error attempting to spawn daemon; " "rc = [%d]\n", __func__, rc); - goto out_module_put_unlock_daemon_list; + goto out_unlock_daemon_list; } mutex_lock(&daemon->mux); if (daemon->flags & ECRYPTFS_DAEMON_MISCDEV_OPEN) { @@ -108,9 +101,6 @@ ecryptfs_miscdev_open(struct inode *inode, struct file *file) atomic_inc(&ecryptfs_num_miscdev_opens); out_unlock_daemon: mutex_unlock(&daemon->mux); -out_module_put_unlock_daemon_list: - if (rc) - module_put(THIS_MODULE); out_unlock_daemon_list: mutex_unlock(&ecryptfs_daemon_hash_mux); return rc; @@ -147,7 +137,6 @@ ecryptfs_miscdev_release(struct inode *inode, struct file *file) "bug.\n", __func__, rc); BUG(); } - module_put(THIS_MODULE); return rc; } @@ -471,6 +460,7 @@ out_free: static const struct file_operations ecryptfs_miscdev_fops = { + .owner = THIS_MODULE, .open = ecryptfs_miscdev_open, .poll = ecryptfs_miscdev_poll, .read = ecryptfs_miscdev_read, -- cgit v1.1 From 8ce584c7416d8a85a6f3edc17d1cddefe331e87e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 30 Mar 2013 20:13:46 -0400 Subject: procfs: add proc_remove_subtree() just what it sounds like; do that only to procfs subtrees you've created - doing that to something shared with another driver is not only antisocial, but might cause interesting races with proc_create() and its ilk. Signed-off-by: Al Viro --- fs/proc/generic.c | 119 ++++++++++++++++++++++++++++++++++++------------ include/linux/proc_fs.h | 2 + 2 files changed, 91 insertions(+), 30 deletions(-) diff --git a/fs/proc/generic.c b/fs/proc/generic.c index 4b3b3ff..21e1a8f 100644 --- a/fs/proc/generic.c +++ b/fs/proc/generic.c @@ -755,37 +755,8 @@ void pde_put(struct proc_dir_entry *pde) free_proc_entry(pde); } -/* - * Remove a /proc entry and free it if it's not currently in use. - */ -void remove_proc_entry(const char *name, struct proc_dir_entry *parent) +static void entry_rundown(struct proc_dir_entry *de) { - struct proc_dir_entry **p; - struct proc_dir_entry *de = NULL; - const char *fn = name; - unsigned int len; - - spin_lock(&proc_subdir_lock); - if (__xlate_proc_name(name, &parent, &fn) != 0) { - spin_unlock(&proc_subdir_lock); - return; - } - len = strlen(fn); - - for (p = &parent->subdir; *p; p=&(*p)->next ) { - if (proc_match(len, fn, *p)) { - de = *p; - *p = de->next; - de->next = NULL; - break; - } - } - spin_unlock(&proc_subdir_lock); - if (!de) { - WARN(1, "name '%s'\n", name); - return; - } - spin_lock(&de->pde_unload_lock); /* * Stop accepting new callers into module. If you're @@ -817,6 +788,40 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent) spin_lock(&de->pde_unload_lock); } spin_unlock(&de->pde_unload_lock); +} + +/* + * Remove a /proc entry and free it if it's not currently in use. + */ +void remove_proc_entry(const char *name, struct proc_dir_entry *parent) +{ + struct proc_dir_entry **p; + struct proc_dir_entry *de = NULL; + const char *fn = name; + unsigned int len; + + spin_lock(&proc_subdir_lock); + if (__xlate_proc_name(name, &parent, &fn) != 0) { + spin_unlock(&proc_subdir_lock); + return; + } + len = strlen(fn); + + for (p = &parent->subdir; *p; p=&(*p)->next ) { + if (proc_match(len, fn, *p)) { + de = *p; + *p = de->next; + de->next = NULL; + break; + } + } + spin_unlock(&proc_subdir_lock); + if (!de) { + WARN(1, "name '%s'\n", name); + return; + } + + entry_rundown(de); if (S_ISDIR(de->mode)) parent->nlink--; @@ -827,3 +832,57 @@ void remove_proc_entry(const char *name, struct proc_dir_entry *parent) pde_put(de); } EXPORT_SYMBOL(remove_proc_entry); + +int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) +{ + struct proc_dir_entry **p; + struct proc_dir_entry *root = NULL, *de, *next; + const char *fn = name; + unsigned int len; + + spin_lock(&proc_subdir_lock); + if (__xlate_proc_name(name, &parent, &fn) != 0) { + spin_unlock(&proc_subdir_lock); + return -ENOENT; + } + len = strlen(fn); + + for (p = &parent->subdir; *p; p=&(*p)->next ) { + if (proc_match(len, fn, *p)) { + root = *p; + *p = root->next; + root->next = NULL; + break; + } + } + if (!root) { + spin_unlock(&proc_subdir_lock); + return -ENOENT; + } + de = root; + while (1) { + next = de->subdir; + if (next) { + de->subdir = next->next; + next->next = NULL; + de = next; + continue; + } + spin_unlock(&proc_subdir_lock); + + entry_rundown(de); + next = de->parent; + if (S_ISDIR(de->mode)) + next->nlink--; + de->nlink = 0; + if (de == root) + break; + pde_put(de); + + spin_lock(&proc_subdir_lock); + de = next; + } + pde_put(root); + return 0; +} +EXPORT_SYMBOL(remove_proc_subtree); diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h index 8307f2f..94dfb2a 100644 --- a/include/linux/proc_fs.h +++ b/include/linux/proc_fs.h @@ -117,6 +117,7 @@ struct proc_dir_entry *proc_create_data(const char *name, umode_t mode, const struct file_operations *proc_fops, void *data); extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent); +extern int remove_proc_subtree(const char *name, struct proc_dir_entry *parent); struct pid_namespace; @@ -202,6 +203,7 @@ static inline struct proc_dir_entry *proc_create_data(const char *name, return NULL; } #define remove_proc_entry(name, parent) do {} while (0) +#define remove_proc_subtree(name, parent) do {} while (0) static inline struct proc_dir_entry *proc_symlink(const char *name, struct proc_dir_entry *parent,const char *dest) {return NULL;} -- cgit v1.1 From ccf932042fa7785832d8989ba1369cd7c7f5d7a1 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 31 Mar 2013 22:34:37 -0400 Subject: palinfo fixes * check for proc_mkdir() failures * fix buffer overrun - sizeof(format string) is *not* enough to hold sprintf() result. * use proc_remove_subtree(); life's much easier with it Signed-off-by: Al Viro --- arch/ia64/kernel/palinfo.c | 77 ++++++++-------------------------------------- 1 file changed, 13 insertions(+), 64 deletions(-) diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c index 77597e5..79521d5 100644 --- a/arch/ia64/kernel/palinfo.c +++ b/arch/ia64/kernel/palinfo.c @@ -849,17 +849,6 @@ static palinfo_entry_t palinfo_entries[]={ #define NR_PALINFO_ENTRIES (int) ARRAY_SIZE(palinfo_entries) -/* - * this array is used to keep track of the proc entries we create. This is - * required in the module mode when we need to remove all entries. The procfs code - * does not do recursion of deletion - * - * Notes: - * - +1 accounts for the cpuN directory entry in /proc/pal - */ -#define NR_PALINFO_PROC_ENTRIES (NR_CPUS*(NR_PALINFO_ENTRIES+1)) - -static struct proc_dir_entry *palinfo_proc_entries[NR_PALINFO_PROC_ENTRIES]; static struct proc_dir_entry *palinfo_dir; /* @@ -971,60 +960,32 @@ palinfo_read_entry(char *page, char **start, off_t off, int count, int *eof, voi static void __cpuinit create_palinfo_proc_entries(unsigned int cpu) { -# define CPUSTR "cpu%d" - pal_func_cpu_u_t f; - struct proc_dir_entry **pdir; struct proc_dir_entry *cpu_dir; int j; - char cpustr[sizeof(CPUSTR)]; - - - /* - * we keep track of created entries in a depth-first order for - * cleanup purposes. Each entry is stored into palinfo_proc_entries - */ - sprintf(cpustr,CPUSTR, cpu); + char cpustr[3+4+1]; /* cpu numbers are up to 4095 on itanic */ + sprintf(cpustr, "cpu%d", cpu); cpu_dir = proc_mkdir(cpustr, palinfo_dir); + if (!cpu_dir) + return; f.req_cpu = cpu; - /* - * Compute the location to store per cpu entries - * We dont store the top level entry in this list, but - * remove it finally after removing all cpu entries. - */ - pdir = &palinfo_proc_entries[cpu*(NR_PALINFO_ENTRIES+1)]; - *pdir++ = cpu_dir; for (j=0; j < NR_PALINFO_ENTRIES; j++) { f.func_id = j; - *pdir = create_proc_read_entry( - palinfo_entries[j].name, 0, cpu_dir, - palinfo_read_entry, (void *)f.value); - pdir++; + create_proc_read_entry( + palinfo_entries[j].name, 0, cpu_dir, + palinfo_read_entry, (void *)f.value); } } static void remove_palinfo_proc_entries(unsigned int hcpu) { - int j; - struct proc_dir_entry *cpu_dir, **pdir; - - pdir = &palinfo_proc_entries[hcpu*(NR_PALINFO_ENTRIES+1)]; - cpu_dir = *pdir; - *pdir++=NULL; - for (j=0; j < (NR_PALINFO_ENTRIES); j++) { - if ((*pdir)) { - remove_proc_entry ((*pdir)->name, cpu_dir); - *pdir ++= NULL; - } - } - - if (cpu_dir) { - remove_proc_entry(cpu_dir->name, palinfo_dir); - } + char cpustr[3+4+1]; /* cpu numbers are up to 4095 on itanic */ + sprintf(cpustr, "cpu%d", hcpu); + remove_proc_subtree(cpustr, palinfo_dir); } static int __cpuinit palinfo_cpu_callback(struct notifier_block *nfb, @@ -1058,6 +1019,8 @@ palinfo_init(void) printk(KERN_INFO "PAL Information Facility v%s\n", PALINFO_VERSION); palinfo_dir = proc_mkdir("pal", NULL); + if (!palinfo_dir) + return -ENOMEM; /* Create palinfo dirs in /proc for all online cpus */ for_each_online_cpu(i) { @@ -1073,22 +1036,8 @@ palinfo_init(void) static void __exit palinfo_exit(void) { - int i = 0; - - /* remove all nodes: depth first pass. Could optimize this */ - for_each_online_cpu(i) { - remove_palinfo_proc_entries(i); - } - - /* - * Remove the top level entry finally - */ - remove_proc_entry(palinfo_dir->name, NULL); - - /* - * Unregister from cpu notifier callbacks - */ unregister_hotcpu_notifier(&palinfo_cpu_notifier); + remove_proc_subtree("pal", NULL); } module_init(palinfo_init); -- cgit v1.1 From e9c5d8a562f01b211926d70443378eb14b29a676 Mon Sep 17 00:00:00 2001 From: Andrey Vagin Date: Tue, 9 Apr 2013 17:33:29 +0400 Subject: mnt: release locks on error path in do_loopback do_loopback calls lock_mount(path) and forget to unlock_mount if clone_mnt or copy_mnt fails. [ 77.661566] ================================================ [ 77.662939] [ BUG: lock held when returning to user space! ] [ 77.664104] 3.9.0-rc5+ #17 Not tainted [ 77.664982] ------------------------------------------------ [ 77.666488] mount/514 is leaving the kernel with locks still held! [ 77.668027] 2 locks held by mount/514: [ 77.668817] #0: (&sb->s_type->i_mutex_key#7){+.+.+.}, at: [] lock_mount+0x32/0xe0 [ 77.671755] #1: (&namespace_sem){+++++.}, at: [] lock_mount+0x4a/0xe0 Signed-off-by: Andrey Vagin Signed-off-by: Al Viro --- fs/namespace.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/namespace.c b/fs/namespace.c index 50ca17d..6c7d31e 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1686,7 +1686,7 @@ static int do_loopback(struct path *path, const char *old_name, if (IS_ERR(mnt)) { err = PTR_ERR(mnt); - goto out; + goto out2; } err = graft_tree(mnt, path); -- cgit v1.1 From f934af05cb1bf20558542185299394a69060b829 Mon Sep 17 00:00:00 2001 From: Mark Salter Date: Tue, 9 Apr 2013 15:35:46 -0400 Subject: add memory barrier to arch_local_irq_restore arch_local_irq_save() and friends are required to act as compiler memory barriers. This patch adds a "memory" clobber to the inline asm code in arch_local_irq_restore() which is used as the building block for other functions needing to set/clear the interrupt enable in the CSR register. Signed-off-by: Mark Salter --- arch/c6x/include/asm/irqflags.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/c6x/include/asm/irqflags.h b/arch/c6x/include/asm/irqflags.h index cf78e09..2c71d56 100644 --- a/arch/c6x/include/asm/irqflags.h +++ b/arch/c6x/include/asm/irqflags.h @@ -27,7 +27,7 @@ static inline unsigned long arch_local_save_flags(void) /* set interrupt enabled status */ static inline void arch_local_irq_restore(unsigned long flags) { - asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags)); + asm volatile (" mvc .s2 %0,CSR\n" : : "b"(flags) : "memory"); } /* unconditionally enable interrupts */ -- cgit v1.1 From 83e03b3fe4daffdebbb42151d5410d730ae50bd1 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Mon, 1 Apr 2013 21:46:23 +0900 Subject: tracing: Fix double free when function profile init failed On the failure path, stat->start and stat->pages will refer same page. So it'll attempt to free the same page again and get kernel panic. Link: http://lkml.kernel.org/r/1364820385-32027-1-git-send-email-namhyung@kernel.org Cc: Frederic Weisbecker Cc: Namhyung Kim Cc: stable@vger.kernel.org Signed-off-by: Namhyung Kim Signed-off-by: Steven Rostedt --- kernel/trace/ftrace.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 7e89710..926ebfb 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -694,7 +694,6 @@ int ftrace_profile_pages_init(struct ftrace_profile_stat *stat) free_page(tmp); } - free_page((unsigned long)stat->pages); stat->pages = NULL; stat->start = NULL; -- cgit v1.1 From 1812a3db0874be1d1524086da9e84397b800f546 Mon Sep 17 00:00:00 2001 From: Christopher Harvey Date: Fri, 5 Apr 2013 10:51:15 -0400 Subject: drm/mgag200: Index 24 in extended CRTC registers is 24 in hex, not decimal. This change properly enables the "requester" in G200ER cards that is responsible for getting pixels out of memory and clocking them out to the screen. Signed-off-by: Christopher Harvey Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/mgag200/mgag200_mode.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index fe22bb7..78d8e919 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -751,8 +751,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, int i; unsigned char misc = 0; unsigned char ext_vga[6]; - unsigned char ext_vga_index24; - unsigned char dac_index90 = 0; u8 bppshift; static unsigned char dacvalue[] = { @@ -803,7 +801,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, option2 = 0x0000b000; break; case G200_ER: - dac_index90 = 0; break; } @@ -852,10 +849,8 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, WREG_DAC(i, dacvalue[i]); } - if (mdev->type == G200_ER) { - WREG_DAC(0x90, dac_index90); - } - + if (mdev->type == G200_ER) + WREG_DAC(0x90, 0); if (option) pci_write_config_dword(dev->pdev, PCI_MGA_OPTION, option); @@ -952,8 +947,6 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, if (mdev->type == G200_WB) ext_vga[1] |= 0x88; - ext_vga_index24 = 0x05; - /* Set pixel clocks */ misc = 0x2d; WREG8(MGA_MISC_OUT, misc); @@ -965,7 +958,7 @@ static int mga_crtc_mode_set(struct drm_crtc *crtc, } if (mdev->type == G200_ER) - WREG_ECRT(24, ext_vga_index24); + WREG_ECRT(0x24, 0x5); if (mdev->type == G200_EV) { WREG_ECRT(6, 0); -- cgit v1.1 From 765024697807ad1e1cac332aa891253ca4a339da Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 9 Apr 2013 16:33:06 +0200 Subject: dmaengine: omap-dma: Start DMA without delay for cyclic channels cyclic DMA is only used by audio which needs DMA to be started without a delay. If the DMA for audio is started using the tasklet we experience random channel switch (to be more precise: channel shift). Reported-by: Peter Meerwald CC: stable@vger.kernel.org # v3.7+ Signed-off-by: Peter Ujfalusi Acked-by: Santosh Shilimkar Acked-by: Russell King Signed-off-by: Vinod Koul --- drivers/dma/omap-dma.c | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index c4b4fd2..08b43bf 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -276,12 +276,20 @@ static void omap_dma_issue_pending(struct dma_chan *chan) spin_lock_irqsave(&c->vc.lock, flags); if (vchan_issue_pending(&c->vc) && !c->desc) { - struct omap_dmadev *d = to_omap_dma_dev(chan->device); - spin_lock(&d->lock); - if (list_empty(&c->node)) - list_add_tail(&c->node, &d->pending); - spin_unlock(&d->lock); - tasklet_schedule(&d->task); + /* + * c->cyclic is used only by audio and in this case the DMA need + * to be started without delay. + */ + if (!c->cyclic) { + struct omap_dmadev *d = to_omap_dma_dev(chan->device); + spin_lock(&d->lock); + if (list_empty(&c->node)) + list_add_tail(&c->node, &d->pending); + spin_unlock(&d->lock); + tasklet_schedule(&d->task); + } else { + omap_dma_start_desc(c); + } } spin_unlock_irqrestore(&c->vc.lock, flags); } -- cgit v1.1 From aaaf165b247a1a8ea5cd2936d9fd1eefe5e580f9 Mon Sep 17 00:00:00 2001 From: Nigel Roberts Date: Sun, 31 Mar 2013 15:13:24 +1100 Subject: Fix GE0/GE1 init on ix2-200 as GE0 has no PHY Signed-off-by: Jason Cooper --- arch/arm/mach-kirkwood/board-iomega_ix2_200.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-kirkwood/board-iomega_ix2_200.c b/arch/arm/mach-kirkwood/board-iomega_ix2_200.c index f655b26..e5f7041 100644 --- a/arch/arm/mach-kirkwood/board-iomega_ix2_200.c +++ b/arch/arm/mach-kirkwood/board-iomega_ix2_200.c @@ -20,10 +20,15 @@ static struct mv643xx_eth_platform_data iomega_ix2_200_ge00_data = { .duplex = DUPLEX_FULL, }; +static struct mv643xx_eth_platform_data iomega_ix2_200_ge01_data = { + .phy_addr = MV643XX_ETH_PHY_ADDR(11), +}; + void __init iomega_ix2_200_init(void) { /* * Basic setup. Needs to be called early. */ - kirkwood_ge01_init(&iomega_ix2_200_ge00_data); + kirkwood_ge00_init(&iomega_ix2_200_ge00_data); + kirkwood_ge01_init(&iomega_ix2_200_ge01_data); } -- cgit v1.1 From eb04e0ac198cec3bab407ad220438dfa65c19c67 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 10 Apr 2013 12:44:18 -0400 Subject: NFSv4: Doh! Typo in the fix to nfs41_walk_client_list Make sure that we set the status to 0 on success. Missed in testing because it never appears when doing multiple mounts to _different_ servers. Signed-off-by: Trond Myklebust Cc: # 3.7.x: 7b1f1fd: NFSv4/4.1: Fix bugs in nfs4[01]_walk_client_list --- fs/nfs/nfs4client.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index c7b346f..66b6664 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -482,6 +482,7 @@ int nfs41_walk_client_list(struct nfs_client *new, atomic_inc(&pos->cl_count); *result = pos; + status = 0; dprintk("NFS: <-- %s using nfs_client = %p ({%d})\n", __func__, pos, atomic_read(&pos->cl_count)); break; -- cgit v1.1 From 600468d0686096ddc1000c8a2e69475931084414 Mon Sep 17 00:00:00 2001 From: Gregory CLEMENT Date: Fri, 5 Apr 2013 14:32:52 +0200 Subject: arm: mvebu: Fix the irq map function in SMP mode This patch fix the regression introduced by the commit 3202bf0157ccb "arm: mvebu: Improve the SMP support of the interrupt controller": GPIO IRQ were no longer delivered to the CPUs. To be delivered to a CPU an interrupt must be enabled at CPU level and at interrupt source level. Before the offending patch, all the interrupts were enabled at source level during map() function. Mask() and unmask() was done by handling the per-CPU part. It was fine when running in UP with only one CPU. The offending patch added support for SMP, in this case mask() and unmask() was done by handling the interrupt source level part. The per-CPU level part was handled by the affinity API to select the CPU which will receive the interrupt. (Due to some hardware limitation only one CPU at a time can received a given interrupt). For "normal" interrupt __setup_irq() was called when an irq was registered. irq_set_affinity() is called from this function, which enabled the interrupt on one of the CPUs. Whereas for GPIO IRQ which were chained interrupts, the irq_set_affinity() was never called and none of the CPUs was selected to receive the interrupt. With this patch all the interrupt are enable on the current CPU during map() function. Enabling the interrupts on a CPU doesn't depend anymore on irq_set_affinity() and then the chained irq are not anymore a special case. However the CPU which will receive the irq can still be modify later using irq_set_affinity(). Tested with Mirabox (A370) and Openblocks AX3 (AXP), rootfs mounted over NFS, compiled with CONFIG_SMP=y/N. Signed-off-by: Gregory CLEMENT Reported-by: Ryan Press Investigated-by: Ezequiel Garcia Tested-by: Ezequiel Garcia Tested-by: Ryan Press Signed-off-by: Jason Cooper --- arch/arm/mach-mvebu/irq-armada-370-xp.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-mvebu/irq-armada-370-xp.c b/arch/arm/mach-mvebu/irq-armada-370-xp.c index 6a9195e..d5970f5 100644 --- a/arch/arm/mach-mvebu/irq-armada-370-xp.c +++ b/arch/arm/mach-mvebu/irq-armada-370-xp.c @@ -61,7 +61,6 @@ static struct irq_domain *armada_370_xp_mpic_domain; */ static void armada_370_xp_irq_mask(struct irq_data *d) { -#ifdef CONFIG_SMP irq_hw_number_t hwirq = irqd_to_hwirq(d); if (hwirq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ) @@ -70,15 +69,10 @@ static void armada_370_xp_irq_mask(struct irq_data *d) else writel(hwirq, per_cpu_int_base + ARMADA_370_XP_INT_SET_MASK_OFFS); -#else - writel(irqd_to_hwirq(d), - per_cpu_int_base + ARMADA_370_XP_INT_SET_MASK_OFFS); -#endif } static void armada_370_xp_irq_unmask(struct irq_data *d) { -#ifdef CONFIG_SMP irq_hw_number_t hwirq = irqd_to_hwirq(d); if (hwirq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ) @@ -87,10 +81,6 @@ static void armada_370_xp_irq_unmask(struct irq_data *d) else writel(hwirq, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS); -#else - writel(irqd_to_hwirq(d), - per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS); -#endif } #ifdef CONFIG_SMP @@ -146,7 +136,11 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h, unsigned int virq, irq_hw_number_t hw) { armada_370_xp_irq_mask(irq_get_irq_data(virq)); - writel(hw, main_int_base + ARMADA_370_XP_INT_SET_ENABLE_OFFS); + if (hw != ARMADA_370_XP_TIMER0_PER_CPU_IRQ) + writel(hw, per_cpu_int_base + + ARMADA_370_XP_INT_CLEAR_MASK_OFFS); + else + writel(hw, main_int_base + ARMADA_370_XP_INT_SET_ENABLE_OFFS); irq_set_status_flags(virq, IRQ_LEVEL); if (hw == ARMADA_370_XP_TIMER0_PER_CPU_IRQ) { -- cgit v1.1 From 1160c2779b826c6f5c08e5cc542de58fd1f667d5 Mon Sep 17 00:00:00 2001 From: Samu Kallio Date: Sat, 23 Mar 2013 09:36:35 -0400 Subject: x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates In paravirtualized x86_64 kernels, vmalloc_fault may cause an oops when lazy MMU updates are enabled, because set_pgd effects are being deferred. One instance of this problem is during process mm cleanup with memory cgroups enabled. The chain of events is as follows: - zap_pte_range enables lazy MMU updates - zap_pte_range eventually calls mem_cgroup_charge_statistics, which accesses the vmalloc'd mem_cgroup per-cpu stat area - vmalloc_fault is triggered which tries to sync the corresponding PGD entry with set_pgd, but the update is deferred - vmalloc_fault oopses due to a mismatch in the PUD entries The OOPs usually looks as so: ------------[ cut here ]------------ kernel BUG at arch/x86/mm/fault.c:396! invalid opcode: 0000 [#1] SMP .. snip .. CPU 1 Pid: 10866, comm: httpd Not tainted 3.6.10-4.fc18.x86_64 #1 RIP: e030:[] [] vmalloc_fault+0x11f/0x208 .. snip .. Call Trace: [] do_page_fault+0x399/0x4b0 [] ? xen_mc_extend_args+0xec/0x110 [] page_fault+0x25/0x30 [] ? mem_cgroup_charge_statistics.isra.13+0x13/0x50 [] __mem_cgroup_uncharge_common+0xd8/0x350 [] mem_cgroup_uncharge_page+0x57/0x60 [] page_remove_rmap+0xe0/0x150 [] ? vm_normal_page+0x1a/0x80 [] unmap_single_vma+0x531/0x870 [] unmap_vmas+0x52/0xa0 [] ? pte_mfn_to_pfn+0x72/0x100 [] exit_mmap+0x98/0x170 [] ? __raw_callee_save_xen_pmd_val+0x11/0x1e [] mmput+0x83/0xf0 [] exit_mm+0x104/0x130 [] do_exit+0x15a/0x8c0 [] do_group_exit+0x3f/0xa0 [] sys_exit_group+0x17/0x20 [] system_call_fastpath+0x16/0x1b Calling arch_flush_lazy_mmu_mode immediately after set_pgd makes the changes visible to the consistency checks. Cc: RedHat-Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=914737 Tested-by: Josh Boyer Reported-and-Tested-by: Krishna Raman Signed-off-by: Samu Kallio Link: http://lkml.kernel.org/r/1364045796-10720-1-git-send-email-konrad.wilk@oracle.com Tested-by: Konrad Rzeszutek Wilk Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: H. Peter Anvin --- arch/x86/mm/fault.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 2b97525..0e88336 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -378,10 +378,12 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) if (pgd_none(*pgd_ref)) return -1; - if (pgd_none(*pgd)) + if (pgd_none(*pgd)) { set_pgd(pgd, *pgd_ref); - else + arch_flush_lazy_mmu_mode(); + } else { BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref)); + } /* * Below here mismatches are bugs because these lower tables -- cgit v1.1 From 511ba86e1d386f671084b5d0e6f110bb30b8eeb2 Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Sat, 23 Mar 2013 09:36:36 -0400 Subject: x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal Invoking arch_flush_lazy_mmu_mode() results in calls to preempt_enable()/disable() which may have performance impact. Since lazy MMU is not used on bare metal we can patch away arch_flush_lazy_mmu_mode() so that it is never called in such environment. [ hpa: the previous patch "Fix vmalloc_fault oops during lazy MMU updates" may cause a minor performance regression on bare metal. This patch resolves that performance regression. It is somewhat unclear to me if this is a good -stable candidate. ] Signed-off-by: Boris Ostrovsky Link: http://lkml.kernel.org/r/1364045796-10720-2-git-send-email-konrad.wilk@oracle.com Tested-by: Josh Boyer Tested-by: Konrad Rzeszutek Wilk Acked-by: Borislav Petkov Signed-off-by: Konrad Rzeszutek Wilk Signed-off-by: H. Peter Anvin Cc: SEE NOTE ABOVE --- arch/x86/include/asm/paravirt.h | 5 ++++- arch/x86/include/asm/paravirt_types.h | 2 ++ arch/x86/kernel/paravirt.c | 25 +++++++++++++------------ arch/x86/lguest/boot.c | 1 + arch/x86/xen/mmu.c | 1 + 5 files changed, 21 insertions(+), 13 deletions(-) diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h index 5edd174..7361e47 100644 --- a/arch/x86/include/asm/paravirt.h +++ b/arch/x86/include/asm/paravirt.h @@ -703,7 +703,10 @@ static inline void arch_leave_lazy_mmu_mode(void) PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave); } -void arch_flush_lazy_mmu_mode(void); +static inline void arch_flush_lazy_mmu_mode(void) +{ + PVOP_VCALL0(pv_mmu_ops.lazy_mode.flush); +} static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, phys_addr_t phys, pgprot_t flags) diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h index 142236e..b3b0ec1 100644 --- a/arch/x86/include/asm/paravirt_types.h +++ b/arch/x86/include/asm/paravirt_types.h @@ -91,6 +91,7 @@ struct pv_lazy_ops { /* Set deferred update mode, used for batching operations. */ void (*enter)(void); void (*leave)(void); + void (*flush)(void); }; struct pv_time_ops { @@ -679,6 +680,7 @@ void paravirt_end_context_switch(struct task_struct *next); void paravirt_enter_lazy_mmu(void); void paravirt_leave_lazy_mmu(void); +void paravirt_flush_lazy_mmu(void); void _paravirt_nop(void); u32 _paravirt_ident_32(u32); diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c index 17fff18..8bfb335 100644 --- a/arch/x86/kernel/paravirt.c +++ b/arch/x86/kernel/paravirt.c @@ -263,6 +263,18 @@ void paravirt_leave_lazy_mmu(void) leave_lazy(PARAVIRT_LAZY_MMU); } +void paravirt_flush_lazy_mmu(void) +{ + preempt_disable(); + + if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) { + arch_leave_lazy_mmu_mode(); + arch_enter_lazy_mmu_mode(); + } + + preempt_enable(); +} + void paravirt_start_context_switch(struct task_struct *prev) { BUG_ON(preemptible()); @@ -292,18 +304,6 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void) return this_cpu_read(paravirt_lazy_mode); } -void arch_flush_lazy_mmu_mode(void) -{ - preempt_disable(); - - if (paravirt_get_lazy_mode() == PARAVIRT_LAZY_MMU) { - arch_leave_lazy_mmu_mode(); - arch_enter_lazy_mmu_mode(); - } - - preempt_enable(); -} - struct pv_info pv_info = { .name = "bare hardware", .paravirt_enabled = 0, @@ -475,6 +475,7 @@ struct pv_mmu_ops pv_mmu_ops = { .lazy_mode = { .enter = paravirt_nop, .leave = paravirt_nop, + .flush = paravirt_nop, }, .set_fixmap = native_set_fixmap, diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c index 1cbd89c..7114c63 100644 --- a/arch/x86/lguest/boot.c +++ b/arch/x86/lguest/boot.c @@ -1334,6 +1334,7 @@ __init void lguest_init(void) pv_mmu_ops.read_cr3 = lguest_read_cr3; pv_mmu_ops.lazy_mode.enter = paravirt_enter_lazy_mmu; pv_mmu_ops.lazy_mode.leave = lguest_leave_lazy_mmu_mode; + pv_mmu_ops.lazy_mode.flush = paravirt_flush_lazy_mmu; pv_mmu_ops.pte_update = lguest_pte_update; pv_mmu_ops.pte_update_defer = lguest_pte_update; diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index 6afbb2c..2f5d687 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -2196,6 +2196,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = { .lazy_mode = { .enter = paravirt_enter_lazy_mmu, .leave = xen_leave_lazy_mmu, + .flush = paravirt_flush_lazy_mmu, }, .set_fixmap = xen_set_fixmap, -- cgit v1.1 From 61a0f6efc8932e9914e1782ff3a027e23c687fc6 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Tue, 9 Apr 2013 23:19:00 +0000 Subject: e100: Add dma mapping error check e100 uses pci_map_single, but fails to check for a dma mapping error after its use, resulting in a stack trace: [ 46.656594] ------------[ cut here ]------------ [ 46.657004] WARNING: at lib/dma-debug.c:933 check_unmap+0x47b/0x950() [ 46.657004] Hardware name: To Be Filled By O.E.M. [ 46.657004] e100 0000:00:0e.0: DMA-API: device driver failed to check map error[device address=0x000000007a4540fa] [size=90 bytes] [mapped as single] [ 46.657004] Modules linked in: [ 46.657004] w83627hf hwmon_vid snd_via82xx ppdev snd_ac97_codec ac97_bus snd_seq snd_pcm snd_mpu401 snd_mpu401_uart ns558 snd_rawmidi gameport parport_pc e100 snd_seq_device parport snd_page_alloc snd_timer snd soundcore skge shpchp k8temp mii edac_core i2c_viapro edac_mce_amd nfsd auth_rpcgss nfs_acl lockd sunrpc binfmt_misc uinput ata_generic pata_acpi radeon i2c_algo_bit drm_kms_helper ttm firewire_ohci drm firewire_core pata_via sata_via i2c_core sata_promise crc_itu_t [ 46.657004] Pid: 792, comm: ip Not tainted 3.8.0-0.rc6.git0.1.fc19.x86_64 #1 [ 46.657004] Call Trace: [ 46.657004] [] warn_slowpath_common+0x70/0xa0 [ 46.657004] [] warn_slowpath_fmt+0x4c/0x50 [ 46.657004] [] check_unmap+0x47b/0x950 [ 46.657004] [] debug_dma_unmap_page+0x5f/0x70 [ 46.657004] [] ? e100_tx_clean+0x30/0x210 [e100] [ 46.657004] [] e100_tx_clean+0xe8/0x210 [e100] [ 46.657004] [] e100_poll+0x56f/0x6c0 [e100] [ 46.657004] [] ? net_rx_action+0xa1/0x370 [ 46.657004] [] net_rx_action+0x172/0x370 [ 46.657004] [] __do_softirq+0xef/0x3d0 [ 46.657004] [] call_softirq+0x1c/0x30 [ 46.657004] [] do_softirq+0x85/0xc0 [ 46.657004] [] irq_exit+0xd5/0xe0 [ 46.657004] [] do_IRQ+0x56/0xc0 [ 46.657004] [] common_interrupt+0x72/0x72 [ 46.657004] [] ? _raw_spin_unlock_irqrestore+0x3b/0x70 [ 46.657004] [] __slab_free+0x58/0x38b [ 46.657004] [] ? fsnotify_clear_marks_by_inode+0x34/0x120 [ 46.657004] [] ? kmem_cache_free+0x97/0x320 [ 46.657004] [] ? sock_destroy_inode+0x34/0x40 [ 46.657004] [] ? sock_destroy_inode+0x34/0x40 [ 46.657004] [] kmem_cache_free+0x312/0x320 [ 46.657004] [] sock_destroy_inode+0x34/0x40 [ 46.657004] [] destroy_inode+0x38/0x60 [ 46.657004] [] evict+0x10e/0x1a0 [ 46.657004] [] iput+0xf5/0x180 [ 46.657004] [] dput+0x248/0x310 [ 46.657004] [] __fput+0x171/0x240 [ 46.657004] [] ____fput+0xe/0x10 [ 46.657004] [] task_work_run+0xac/0xe0 [ 46.657004] [] do_exit+0x26d/0xc30 [ 46.657004] [] ? finish_task_switch+0x7c/0x120 [ 46.657004] [] ? retint_swapgs+0x13/0x1b [ 46.657004] [] do_group_exit+0x49/0xc0 [ 46.657004] [] sys_exit_group+0x14/0x20 [ 46.657004] [] system_call_fastpath+0x16/0x1b [ 46.657004] ---[ end trace 4468c44e2156e7d1 ]--- [ 46.657004] Mapped at: [ 46.657004] [] debug_dma_map_page+0x91/0x140 [ 46.657004] [] e100_xmit_prepare+0x12b/0x1c0 [e100] [ 46.657004] [] e100_exec_cb+0x84/0x140 [e100] [ 46.657004] [] e100_xmit_frame+0x3a/0x190 [e100] [ 46.657004] [] dev_hard_start_xmit+0x259/0x6c0 Easy fix, modify the cb paramter to e100_exec_cb to return an error, and do the dma_mapping_error check in the obvious place This was reported previously here: http://article.gmane.org/gmane.linux.network/257893 But nobody stepped up and fixed it. CC: Josh Boyer CC: e1000-devel@lists.sourceforge.net Signed-off-by: Neil Horman Reported-by: Michal Jaegermann Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/e100.c | 36 +++++++++++++++++++++++++----------- 1 file changed, 25 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c index ec800b0..d2bea3f 100644 --- a/drivers/net/ethernet/intel/e100.c +++ b/drivers/net/ethernet/intel/e100.c @@ -870,7 +870,7 @@ err_unlock: } static int e100_exec_cb(struct nic *nic, struct sk_buff *skb, - void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *)) + int (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *)) { struct cb *cb; unsigned long flags; @@ -888,10 +888,13 @@ static int e100_exec_cb(struct nic *nic, struct sk_buff *skb, nic->cbs_avail--; cb->skb = skb; + err = cb_prepare(nic, cb, skb); + if (err) + goto err_unlock; + if (unlikely(!nic->cbs_avail)) err = -ENOSPC; - cb_prepare(nic, cb, skb); /* Order is important otherwise we'll be in a race with h/w: * set S-bit in current first, then clear S-bit in previous. */ @@ -1091,7 +1094,7 @@ static void e100_get_defaults(struct nic *nic) nic->mii.mdio_write = mdio_write; } -static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb) +static int e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb) { struct config *config = &cb->u.config; u8 *c = (u8 *)config; @@ -1181,6 +1184,7 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb) netif_printk(nic, hw, KERN_DEBUG, nic->netdev, "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]); + return 0; } /************************************************************************* @@ -1331,7 +1335,7 @@ static const struct firmware *e100_request_firmware(struct nic *nic) return fw; } -static void e100_setup_ucode(struct nic *nic, struct cb *cb, +static int e100_setup_ucode(struct nic *nic, struct cb *cb, struct sk_buff *skb) { const struct firmware *fw = (void *)skb; @@ -1358,6 +1362,7 @@ static void e100_setup_ucode(struct nic *nic, struct cb *cb, cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80); cb->command = cpu_to_le16(cb_ucode | cb_el); + return 0; } static inline int e100_load_ucode_wait(struct nic *nic) @@ -1400,18 +1405,20 @@ static inline int e100_load_ucode_wait(struct nic *nic) return err; } -static void e100_setup_iaaddr(struct nic *nic, struct cb *cb, +static int e100_setup_iaaddr(struct nic *nic, struct cb *cb, struct sk_buff *skb) { cb->command = cpu_to_le16(cb_iaaddr); memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN); + return 0; } -static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb) +static int e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb) { cb->command = cpu_to_le16(cb_dump); cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr + offsetof(struct mem, dump_buf)); + return 0; } static int e100_phy_check_without_mii(struct nic *nic) @@ -1581,7 +1588,7 @@ static int e100_hw_init(struct nic *nic) return 0; } -static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb) +static int e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb) { struct net_device *netdev = nic->netdev; struct netdev_hw_addr *ha; @@ -1596,6 +1603,7 @@ static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb) memcpy(&cb->u.multi.addr[i++ * ETH_ALEN], &ha->addr, ETH_ALEN); } + return 0; } static void e100_set_multicast_list(struct net_device *netdev) @@ -1756,11 +1764,18 @@ static void e100_watchdog(unsigned long data) round_jiffies(jiffies + E100_WATCHDOG_PERIOD)); } -static void e100_xmit_prepare(struct nic *nic, struct cb *cb, +static int e100_xmit_prepare(struct nic *nic, struct cb *cb, struct sk_buff *skb) { + dma_addr_t dma_addr; cb->command = nic->tx_command; + dma_addr = pci_map_single(nic->pdev, + skb->data, skb->len, PCI_DMA_TODEVICE); + /* If we can't map the skb, have the upper layer try later */ + if (pci_dma_mapping_error(nic->pdev, dma_addr)) + return -ENOMEM; + /* * Use the last 4 bytes of the SKB payload packet as the CRC, used for * testing, ie sending frames with bad CRC. @@ -1777,11 +1792,10 @@ static void e100_xmit_prepare(struct nic *nic, struct cb *cb, cb->u.tcb.tcb_byte_count = 0; cb->u.tcb.threshold = nic->tx_threshold; cb->u.tcb.tbd_count = 1; - cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev, - skb->data, skb->len, PCI_DMA_TODEVICE)); - /* check for mapping failure? */ + cb->u.tcb.tbd.buf_addr = cpu_to_le32(dma_addr); cb->u.tcb.tbd.size = cpu_to_le16(skb->len); skb_tx_timestamp(skb); + return 0; } static netdev_tx_t e100_xmit_frame(struct sk_buff *skb, -- cgit v1.1 From fea75645342c7ad574214497a78e562db12dfd7b Mon Sep 17 00:00:00 2001 From: Yuval Mintz Date: Wed, 10 Apr 2013 13:34:39 +0300 Subject: bnx2x: Prevent null pointer dereference in AFEX mode The cnic module is responsible for initializing various bnx2x structs via callbacks provided by the bnx2x module. One such struct is the queue object for the FCoE queue. If a device is working in AFEX mode and its configuration allows FCoE yet the cnic module is not loaded, it's very likely a null pointer dereference will occur, as the bnx2x will erroneously access the FCoE's queue object. Prevent said access until cnic properly registers itself. Signed-off-by: Yuval Mintz Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index e81a747..8e58da9 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -4947,7 +4947,7 @@ static void bnx2x_after_function_update(struct bnx2x *bp) q); } - if (!NO_FCOE(bp)) { + if (!NO_FCOE(bp) && CNIC_ENABLED(bp)) { fp = &bp->fp[FCOE_IDX(bp)]; queue_params.q_obj = &bnx2x_sp_obj(bp, fp).q_obj; @@ -13354,6 +13354,7 @@ static int bnx2x_unregister_cnic(struct net_device *dev) RCU_INIT_POINTER(bp->cnic_ops, NULL); mutex_unlock(&bp->cnic_mutex); synchronize_rcu(); + bp->cnic_enabled = false; kfree(bp->cnic_kwq); bp->cnic_kwq = NULL; -- cgit v1.1 From 6b07a24fc38476e04f591cc17594bc1835b9efdd Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Wed, 10 Apr 2013 15:34:14 -0400 Subject: lsm: add the missing documentation for the security_skb_owned_by() hook Unfortunately we didn't catch the missing comments earlier when the patch was merged. Signed-off-by: Paul Moore Signed-off-by: David S. Miller --- include/linux/security.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/include/linux/security.h b/include/linux/security.h index 6c3a78a..032c366 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -1012,6 +1012,10 @@ static inline void security_free_mnt_opts(struct security_mnt_opts *opts) * This hook can be used by the module to update any security state * associated with the TUN device's security structure. * @security pointer to the TUN devices's security structure. + * @skb_owned_by: + * This hook sets the packet's owning sock. + * @skb is the packet. + * @sk the sock which owns the packet. * * Security hooks for XFRM operations. * -- cgit v1.1 From c369c9a4a7c82d33329d869cbaf93304cc7a0c40 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 9 Apr 2013 18:17:41 +0100 Subject: cifs: Allow passwords which begin with a delimitor Fixes a regression in cifs_parse_mount_options where a password which begins with a delimitor is parsed incorrectly as being a blank password. Signed-off-by: Sachin Prabhu Acked-by: Jeff Layton Cc: Signed-off-by: Steve French --- fs/cifs/connect.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 991c63c..21b3a29 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1575,14 +1575,24 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, } break; case Opt_blank_pass: - vol->password = NULL; - break; - case Opt_pass: /* passwords have to be handled differently * to allow the character used for deliminator * to be passed within them */ + /* + * Check if this is a case where the password + * starts with a delimiter + */ + tmp_end = strchr(data, '='); + tmp_end++; + if (!(tmp_end < end && tmp_end[1] == delim)) { + /* No it is not. Set the password to NULL */ + vol->password = NULL; + break; + } + /* Yes it is. Drop down to Opt_pass below.*/ + case Opt_pass: /* Obtain the value string */ value = strchr(data, '='); value++; -- cgit v1.1 From f76cfa3c2496c462b5bc01bd0c9340c2715b73ca Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Wed, 10 Apr 2013 15:28:25 +0200 Subject: x86/mm/cpa: Convert noop to functional fix Commit: a8aed3e0752b ("x86/mm/pageattr: Prevent PSE and GLOABL leftovers to confuse pmd/pte_present and pmd_huge") introduced a valid fix but one location that didn't trigger the bug that lead to finding those (small) problems, wasn't updated using the right variable. The wrong variable was also initialized for no good reason, that may have been the source of the confusion. Remove the noop initialization accordingly. Commit a8aed3e0752b also erroneously removed one canon_pgprot pass meant to clear pmd bitflags not supported in hardware by older CPUs, that automatically gets corrected by this patch too by applying it to the right variable in the new location. Reported-by: Stefan Bader Signed-off-by: Andrea Arcangeli Acked-by: Borislav Petkov Cc: Andy Whitcroft Cc: Mel Gorman Link: http://lkml.kernel.org/r/1365600505-19314-1-git-send-email-aarcange@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/mm/pageattr.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 091934e..7896f71 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -467,7 +467,7 @@ try_preserve_large_page(pte_t *kpte, unsigned long address, * We are safe now. Check whether the new pgprot is the same: */ old_pte = *kpte; - old_prot = new_prot = req_prot = pte_pgprot(old_pte); + old_prot = req_prot = pte_pgprot(old_pte); pgprot_val(req_prot) &= ~pgprot_val(cpa->mask_clr); pgprot_val(req_prot) |= pgprot_val(cpa->mask_set); @@ -478,12 +478,12 @@ try_preserve_large_page(pte_t *kpte, unsigned long address, * a non present pmd. The canon_pgprot will clear _PAGE_GLOBAL * for the ancient hardware that doesn't support it. */ - if (pgprot_val(new_prot) & _PAGE_PRESENT) - pgprot_val(new_prot) |= _PAGE_PSE | _PAGE_GLOBAL; + if (pgprot_val(req_prot) & _PAGE_PRESENT) + pgprot_val(req_prot) |= _PAGE_PSE | _PAGE_GLOBAL; else - pgprot_val(new_prot) &= ~(_PAGE_PSE | _PAGE_GLOBAL); + pgprot_val(req_prot) &= ~(_PAGE_PSE | _PAGE_GLOBAL); - new_prot = canon_pgprot(new_prot); + req_prot = canon_pgprot(req_prot); /* * old_pte points to the large page base address. So we need -- cgit v1.1 From f6da51c3ef07c593a410551af4cad093e2fbe755 Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 10 Apr 2013 15:06:13 +0800 Subject: tcm_vhost: Remove double check of response We did the length of response check twice. Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index c127731..28c112f 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -705,15 +705,6 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, tv_cmd->tvc_vhost = vs; tv_cmd->tvc_vq = vq; - - if (unlikely(vq->iov[out].iov_len != - sizeof(struct virtio_scsi_cmd_resp))) { - vq_err(vq, "Expecting virtio_scsi_cmd_resp, got %zu" - " bytes, out: %d, in: %d\n", - vq->iov[out].iov_len, out, in); - break; - } - tv_cmd->tvc_resp = vq->iov[out].iov_base; /* -- cgit v1.1 From 7ea206cf3b06704cf2bfc9c9c395094b24dc44a2 Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 10 Apr 2013 15:06:14 +0800 Subject: tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq If we fail to submit the allocated tv_vmd to tcm_vhost_submission_work, we will leak the tv_vmd. Free tv_vmd on fail path. Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 28c112f..210d59e 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -724,7 +724,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, " exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n", scsi_command_size(tv_cmd->tvc_cdb), TCM_VHOST_MAX_CDB_SIZE); - break; /* TODO */ + goto err; } tv_cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF; @@ -737,7 +737,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, data_direction == DMA_TO_DEVICE); if (unlikely(ret)) { vq_err(vq, "Failed to map iov to sgl\n"); - break; /* TODO */ + goto err; } } @@ -758,6 +758,11 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, } mutex_unlock(&vq->mutex); + return; + +err: + vhost_scsi_free_cmd(tv_cmd); + mutex_unlock(&vq->mutex); } static void vhost_scsi_ctl_handle_kick(struct vhost_work *work) -- cgit v1.1 From 637ab21e284f4e9188acc2746695f7f6452b4a22 Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 10 Apr 2013 15:06:15 +0800 Subject: tcm_vhost: Add vhost_scsi_send_bad_target() helper Share the send bad target code with other use cases. Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 31 ++++++++++++++++++------------- 1 file changed, 18 insertions(+), 13 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 210d59e..1bb0fb4 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -578,6 +578,23 @@ static void tcm_vhost_submission_work(struct work_struct *work) } } +static void vhost_scsi_send_bad_target(struct vhost_scsi *vs, + struct vhost_virtqueue *vq, int head, unsigned out) +{ + struct virtio_scsi_cmd_resp __user *resp; + struct virtio_scsi_cmd_resp rsp; + int ret; + + memset(&rsp, 0, sizeof(rsp)); + rsp.response = VIRTIO_SCSI_S_BAD_TARGET; + resp = vq->iov[out].iov_base; + ret = __copy_to_user(resp, &rsp, sizeof(rsp)); + if (!ret) + vhost_add_used_and_signal(&vs->dev, vq, head, 0); + else + pr_err("Faulted on virtio_scsi_cmd_resp\n"); +} + static void vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq) { @@ -673,19 +690,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, /* Target does not exist, fail the request */ if (unlikely(!tv_tpg)) { - struct virtio_scsi_cmd_resp __user *resp; - struct virtio_scsi_cmd_resp rsp; - - memset(&rsp, 0, sizeof(rsp)); - rsp.response = VIRTIO_SCSI_S_BAD_TARGET; - resp = vq->iov[out].iov_base; - ret = __copy_to_user(resp, &rsp, sizeof(rsp)); - if (!ret) - vhost_add_used_and_signal(&vs->dev, - vq, head, 0); - else - pr_err("Faulted on virtio_scsi_cmd_resp\n"); - + vhost_scsi_send_bad_target(vs, vq, head, out); continue; } -- cgit v1.1 From 055f648c49d948de9452b0f1758869bbbd0097b8 Mon Sep 17 00:00:00 2001 From: Asias He Date: Wed, 10 Apr 2013 15:06:16 +0800 Subject: tcm_vhost: Send bad target to guest when cmd fails Send bad target to guest in case: 1) we can not allocate the cmd 2) fail to submit the cmd Signed-off-by: Asias He Acked-by: Michael S. Tsirkin Signed-off-by: Nicholas Bellinger --- drivers/vhost/tcm_vhost.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/vhost/tcm_vhost.c b/drivers/vhost/tcm_vhost.c index 1bb0fb4..957a0b9 100644 --- a/drivers/vhost/tcm_vhost.c +++ b/drivers/vhost/tcm_vhost.c @@ -703,7 +703,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, if (IS_ERR(tv_cmd)) { vq_err(vq, "vhost_scsi_allocate_cmd failed %ld\n", PTR_ERR(tv_cmd)); - break; + goto err_cmd; } pr_debug("Allocated tv_cmd: %p exp_data_len: %d, data_direction" ": %d\n", tv_cmd, exp_data_len, data_direction); @@ -729,7 +729,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, " exceeds SCSI_MAX_VARLEN_CDB_SIZE: %d\n", scsi_command_size(tv_cmd->tvc_cdb), TCM_VHOST_MAX_CDB_SIZE); - goto err; + goto err_free; } tv_cmd->tvc_lun = ((v_req.lun[2] << 8) | v_req.lun[3]) & 0x3FFF; @@ -742,7 +742,7 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, data_direction == DMA_TO_DEVICE); if (unlikely(ret)) { vq_err(vq, "Failed to map iov to sgl\n"); - goto err; + goto err_free; } } @@ -765,8 +765,10 @@ static void vhost_scsi_handle_vq(struct vhost_scsi *vs, mutex_unlock(&vq->mutex); return; -err: +err_free: vhost_scsi_free_cmd(tv_cmd); +err_cmd: + vhost_scsi_send_bad_target(vs, vq, head, out); mutex_unlock(&vq->mutex); } -- cgit v1.1 From 30f359a6f9da65a66de8cadf959f0f4a0d498bba Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Wed, 10 Apr 2013 15:00:27 -0700 Subject: target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs This patch fixes a bug where a handful of informational / control CDBs that should be allowed during ALUA access state Standby/Offline/Transition where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*. This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN registration when LUN scanning occured during these ALUA access states. Cc: Hannes Reinecke Cc: Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_alua.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index ff1c5ee..cbe48ab 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -409,6 +409,7 @@ static inline int core_alua_state_standby( case REPORT_LUNS: case RECEIVE_DIAGNOSTIC: case SEND_DIAGNOSTIC: + return 0; case MAINTENANCE_IN: switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS: @@ -451,6 +452,7 @@ static inline int core_alua_state_unavailable( switch (cdb[0]) { case INQUIRY: case REPORT_LUNS: + return 0; case MAINTENANCE_IN: switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS: @@ -491,6 +493,7 @@ static inline int core_alua_state_transition( switch (cdb[0]) { case INQUIRY: case REPORT_LUNS: + return 0; case MAINTENANCE_IN: switch (cdb[1] & 0x1f) { case MI_REPORT_TARGET_PGS: -- cgit v1.1 From e7a7f972f9120a7985d38a2be8c540047c94392f Mon Sep 17 00:00:00 2001 From: Alexandre Belloni Date: Wed, 3 Apr 2013 19:40:14 +0200 Subject: gpio: pca953x: fix irq_domain_add_simple usage We actually have to pass chip as the host_data parameter of irq_domain_add_simple() as later on, it is used to initialize chip_data in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer dereference after calling irq_data_get_irq_chip_data() in pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(), pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type(). Fixes regression introduced by commit 0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple irqdomain) Signed-off-by: Alexandre Belloni Acked-by: Maxime Ripard Signed-off-by: Linus Walleij --- drivers/gpio/gpio-pca953x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 2405946..9391cf1 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -575,7 +575,7 @@ static int pca953x_irq_setup(struct pca953x_chip *chip, chip->gpio_chip.ngpio, irq_base, &pca953x_irq_simple_ops, - NULL); + chip); if (!chip->domain) return -ENODEV; -- cgit v1.1 From 5a25bf36b7394f11f2ff90c9e203639cd3dc041a Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Sun, 2 Dec 2012 08:33:24 -0500 Subject: [SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put() The dereference to 'put_index' should be moved below the NULL test. Signed-off-by: Wei Yongjun Acked-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc_sli.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 74b67d9..d43faf3 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -438,11 +438,12 @@ lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq, struct lpfc_rqe *temp_hrqe; struct lpfc_rqe *temp_drqe; struct lpfc_register doorbell; - int put_index = hq->host_index; + int put_index; /* sanity check on queue memory */ if (unlikely(!hq) || unlikely(!dq)) return -ENOMEM; + put_index = hq->host_index; temp_hrqe = hq->qe[hq->host_index].rqe; temp_drqe = dq->qe[dq->host_index].rqe; -- cgit v1.1 From 1baee58638fc58248625255f5c5fcdb987f11b1f Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Fri, 12 Apr 2013 13:25:20 +1000 Subject: udl: handle EDID failure properly. Don't oops seems proper. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/udl/udl_connector.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/udl/udl_connector.c b/drivers/gpu/drm/udl/udl_connector.c index fe5cdbc..b44d548 100644 --- a/drivers/gpu/drm/udl/udl_connector.c +++ b/drivers/gpu/drm/udl/udl_connector.c @@ -61,6 +61,10 @@ static int udl_get_modes(struct drm_connector *connector) int ret; edid = (struct edid *)udl_get_edid(udl); + if (!edid) { + drm_mode_connector_update_edid_property(connector, NULL); + return 0; + } /* * We only read the main block, but if the monitor reports extension -- cgit v1.1 From 89ced125472b8551c65526934b7f6c733a6864fa Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Thu, 11 Apr 2013 14:26:55 +0000 Subject: drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event Driver's and ->fill_modes functions are allowed to grab crtc mutexes (for e.g. load detect). Hence we need to first only grab the general kms mutex, and only in a second step grab all locks to do the modesets. This prevents a deadlock on my gm45 in the tv load detect code called by drm_helper_probe_single_connector_modes. Signed-off-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_fb_helper.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 59d6b9b..892ff9f 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1544,10 +1544,10 @@ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) if (!fb_helper->fb) return 0; - drm_modeset_lock_all(dev); + mutex_lock(&fb_helper->dev->mode_config.mutex); if (!drm_fb_helper_is_bound(fb_helper)) { fb_helper->delayed_hotplug = true; - drm_modeset_unlock_all(dev); + mutex_unlock(&fb_helper->dev->mode_config.mutex); return 0; } DRM_DEBUG_KMS("\n"); @@ -1558,9 +1558,11 @@ int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height); + mutex_unlock(&fb_helper->dev->mode_config.mutex); + + drm_modeset_lock_all(dev); drm_setup_crtcs(fb_helper); drm_modeset_unlock_all(dev); - drm_fb_helper_set_par(fb_helper->fbdev); return 0; -- cgit v1.1 From c481420248c6730246d2a1b1773d5d7007ae0835 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Fri, 12 Apr 2013 11:05:54 +0800 Subject: perf: Fix error return code Fix to return -ENOMEM in the allocation error case instead of 0 (if pmu_bus_running == 1), as done elsewhere in this function. Signed-off-by: Wei Yongjun Cc: a.p.zijlstra@chello.nl Cc: paulus@samba.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com [ Tweaked the error code setting placement and the changelog. ] 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 7f0d67e..7e0962e 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5987,6 +5987,7 @@ skip_type: if (pmu->pmu_cpu_context) goto got_cpu_context; + ret = -ENOMEM; pmu->pmu_cpu_context = alloc_percpu(struct perf_cpu_context); if (!pmu->pmu_cpu_context) goto free_dev; -- cgit v1.1 From 18699739b60cb60230153ff5475b2ba92be185f9 Mon Sep 17 00:00:00 2001 From: Andrea Arcangeli Date: Thu, 11 Apr 2013 15:36:09 +0200 Subject: x86/mm/cpa/selftest: Fix false positive in CPA self test If the pmd is not present, _PAGE_PSE will not be set anymore. Fix the false positive. Reported-by: Ingo Molnar Signed-off-by: Andrea Arcangeli Cc: Stefan Bader Cc: Andy Whitcroft Cc: Mel Gorman Cc: Borislav Petkov Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.com Signed-off-by: Ingo Molnar --- arch/x86/mm/pageattr-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c index b008656..0e38951 100644 --- a/arch/x86/mm/pageattr-test.c +++ b/arch/x86/mm/pageattr-test.c @@ -68,7 +68,7 @@ static int print_split(struct split_state *s) s->gpg++; i += GPS/PAGE_SIZE; } else if (level == PG_LEVEL_2M) { - if (!(pte_val(*pte) & _PAGE_PSE)) { + if ((pte_val(*pte) & _PAGE_PRESENT) && !(pte_val(*pte) & _PAGE_PSE)) { printk(KERN_ERR "%lx level %d but not PSE %Lx\n", addr, level, (u64)pte_val(*pte)); -- cgit v1.1 From 26564600c9e88c6572a5e6ef5ae9121907edfb7f Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Thu, 11 Apr 2013 13:59:52 -0400 Subject: x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set When CONFIG_DEBUG_PAGEALLOC is set page table updates made by kernel_map_pages() are not made visible (via TLB flush) immediately if lazy MMU is on. In environments that support lazy MMU (e.g. Xen) this may lead to fatal page faults, for example, when zap_pte_range() needs to allocate pages in __tlb_remove_page() -> tlb_next_batch(). Signed-off-by: Boris Ostrovsky Cc: konrad.wilk@oracle.com Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.com Signed-off-by: Ingo Molnar --- arch/x86/mm/pageattr.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 7896f71..fb4e73e 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -1413,6 +1413,8 @@ void kernel_map_pages(struct page *page, int numpages, int enable) * but that can deadlock->flush only current cpu: */ __flush_tlb_all(); + + arch_flush_lazy_mmu_mode(); } #ifdef CONFIG_HIBERNATION -- cgit v1.1 From 6a76f8c0ab19f215af2a3442870eeb5f0e81998d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Thu, 11 Apr 2013 15:55:01 +0900 Subject: tracing: Fix possible NULL pointer dereferences Currently set_ftrace_pid and set_graph_function files use seq_lseek for their fops. However seq_open() is called only for FMODE_READ in the fops->open() so that if an user tries to seek one of those file when she open it for writing, it sees NULL seq_file and then panic. It can be easily reproduced with following command: $ cd /sys/kernel/debug/tracing $ echo 1234 | sudo tee -a set_ftrace_pid In this example, GNU coreutils' tee opens the file with fopen(, "a") and then the fopen() internally calls lseek(). Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: stable@vger.kernel.org Signed-off-by: Namhyung Kim Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 2 +- kernel/trace/ftrace.c | 10 +++++----- kernel/trace/trace_stack.c | 2 +- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index 167abf9..eb3ce32 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -396,7 +396,7 @@ ssize_t ftrace_filter_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); -loff_t ftrace_regex_lseek(struct file *file, loff_t offset, int whence); +loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence); int ftrace_regex_release(struct inode *inode, struct file *file); void __init diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 926ebfb..affc35d 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2697,7 +2697,7 @@ ftrace_notrace_open(struct inode *inode, struct file *file) } loff_t -ftrace_regex_lseek(struct file *file, loff_t offset, int whence) +ftrace_filter_lseek(struct file *file, loff_t offset, int whence) { loff_t ret; @@ -3570,7 +3570,7 @@ static const struct file_operations ftrace_filter_fops = { .open = ftrace_filter_open, .read = seq_read, .write = ftrace_filter_write, - .llseek = ftrace_regex_lseek, + .llseek = ftrace_filter_lseek, .release = ftrace_regex_release, }; @@ -3578,7 +3578,7 @@ static const struct file_operations ftrace_notrace_fops = { .open = ftrace_notrace_open, .read = seq_read, .write = ftrace_notrace_write, - .llseek = ftrace_regex_lseek, + .llseek = ftrace_filter_lseek, .release = ftrace_regex_release, }; @@ -3783,8 +3783,8 @@ static const struct file_operations ftrace_graph_fops = { .open = ftrace_graph_open, .read = seq_read, .write = ftrace_graph_write, + .llseek = ftrace_filter_lseek, .release = ftrace_graph_release, - .llseek = seq_lseek, }; #endif /* CONFIG_FUNCTION_GRAPH_TRACER */ @@ -4439,7 +4439,7 @@ static const struct file_operations ftrace_pid_fops = { .open = ftrace_pid_open, .write = ftrace_pid_write, .read = seq_read, - .llseek = seq_lseek, + .llseek = ftrace_filter_lseek, .release = ftrace_pid_release, }; diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c index 42ca822..83a8b5b 100644 --- a/kernel/trace/trace_stack.c +++ b/kernel/trace/trace_stack.c @@ -322,7 +322,7 @@ static const struct file_operations stack_trace_filter_fops = { .open = stack_trace_filter_open, .read = seq_read, .write = ftrace_filter_write, - .llseek = ftrace_regex_lseek, + .llseek = ftrace_filter_lseek, .release = ftrace_regex_release, }; -- cgit v1.1 From 7f49ef69db6bbf756c0abca7e9b65b32e999eec8 Mon Sep 17 00:00:00 2001 From: "Steven Rostedt (Red Hat)" Date: Fri, 12 Apr 2013 16:40:13 -0400 Subject: ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the ftrace_pid_fops is defined when DYNAMIC_FTRACE is not. Cc: stable@vger.kernel.org Cc: Namhyung Kim Signed-off-by: Steven Rostedt --- include/linux/ftrace.h | 3 ++- kernel/trace/ftrace.c | 28 ++++++++++++++-------------- 2 files changed, 16 insertions(+), 15 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index eb3ce32..52da2a2 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -396,7 +396,6 @@ ssize_t ftrace_filter_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); ssize_t ftrace_notrace_write(struct file *file, const char __user *ubuf, size_t cnt, loff_t *ppos); -loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence); int ftrace_regex_release(struct inode *inode, struct file *file); void __init @@ -569,6 +568,8 @@ static inline int ftrace_regex_release(struct inode *inode, struct file *file) { return -ENODEV; } #endif /* CONFIG_DYNAMIC_FTRACE */ +loff_t ftrace_filter_lseek(struct file *file, loff_t offset, int whence); + /* totally disable ftrace - can not re-enable after this */ void ftrace_kill(void); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index affc35d..2461ede 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -1052,6 +1052,19 @@ static __init void ftrace_profile_debugfs(struct dentry *d_tracer) static struct pid * const ftrace_swapper_pid = &init_struct_pid; +loff_t +ftrace_filter_lseek(struct file *file, loff_t offset, int whence) +{ + loff_t ret; + + if (file->f_mode & FMODE_READ) + ret = seq_lseek(file, offset, whence); + else + file->f_pos = ret = 1; + + return ret; +} + #ifdef CONFIG_DYNAMIC_FTRACE #ifndef CONFIG_FTRACE_MCOUNT_RECORD @@ -2612,7 +2625,7 @@ static void ftrace_filter_reset(struct ftrace_hash *hash) * routine, you can use ftrace_filter_write() for the write * routine if @flag has FTRACE_ITER_FILTER set, or * ftrace_notrace_write() if @flag has FTRACE_ITER_NOTRACE set. - * ftrace_regex_lseek() should be used as the lseek routine, and + * ftrace_filter_lseek() should be used as the lseek routine, and * release must call ftrace_regex_release(). */ int @@ -2696,19 +2709,6 @@ ftrace_notrace_open(struct inode *inode, struct file *file) inode, file); } -loff_t -ftrace_filter_lseek(struct file *file, loff_t offset, int whence) -{ - loff_t ret; - - if (file->f_mode & FMODE_READ) - ret = seq_lseek(file, offset, whence); - else - file->f_pos = ret = 1; - - return ret; -} - static int ftrace_match(char *str, char *regex, int len, int type) { int matched = 0; -- cgit v1.1 From 1de14c3c5cbc9bb17e9dcc648cda51c0c85d54b9 Mon Sep 17 00:00:00 2001 From: Dave Hansen Date: Fri, 12 Apr 2013 16:23:54 -0700 Subject: x86-32: Fix possible incomplete TLB invalidate with PAE pagetables This patch attempts to fix: https://bugzilla.kernel.org/show_bug.cgi?id=56461 The symptom is a crash and messages like this: chrome: Corrupted page table at address 34a03000 *pdpt = 0000000000000000 *pde = 0000000000000000 Bad pagetable: 000f [#1] PREEMPT SMP Ingo guesses this got introduced by commit 611ae8e3f520 ("x86/tlb: enable tlb flush range support for x86") since that code started to free unused pagetables. On x86-32 PAE kernels, that new code has the potential to free an entire PMD page and will clear one of the four page-directory-pointer-table (aka pgd_t entries). The hardware aggressively "caches" these top-level entries and invlpg does not actually affect the CPU's copy. If we clear one we *HAVE* to do a full TLB flush, otherwise we might continue using a freed pmd page. (note, we do this properly on the population side in pud_populate()). This patch tracks whenever we clear one of these entries in the 'struct mmu_gather', and ensures that we follow up with a full tlb flush. BTW, I disassembled and checked that: if (tlb->fullmm == 0) and if (!tlb->fullmm && !tlb->need_flush_all) generate essentially the same code, so there should be zero impact there to the !PAE case. Signed-off-by: Dave Hansen Cc: Peter Anvin Cc: Ingo Molnar Cc: Artem S Tashkinov Signed-off-by: Linus Torvalds --- arch/x86/include/asm/tlb.h | 2 +- arch/x86/mm/pgtable.c | 7 +++++++ include/asm-generic/tlb.h | 7 ++++++- mm/memory.c | 1 + 4 files changed, 15 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/tlb.h b/arch/x86/include/asm/tlb.h index 4fef207..c779730 100644 --- a/arch/x86/include/asm/tlb.h +++ b/arch/x86/include/asm/tlb.h @@ -7,7 +7,7 @@ #define tlb_flush(tlb) \ { \ - if (tlb->fullmm == 0) \ + if (!tlb->fullmm && !tlb->need_flush_all) \ flush_tlb_mm_range(tlb->mm, tlb->start, tlb->end, 0UL); \ else \ flush_tlb_mm_range(tlb->mm, 0UL, TLB_FLUSH_ALL, 0UL); \ diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 193350b..17fda6a 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -58,6 +58,13 @@ void ___pte_free_tlb(struct mmu_gather *tlb, struct page *pte) void ___pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd) { paravirt_release_pmd(__pa(pmd) >> PAGE_SHIFT); + /* + * NOTE! For PAE, any changes to the top page-directory-pointer-table + * entries need a full cr3 reload to flush. + */ +#ifdef CONFIG_X86_PAE + tlb->need_flush_all = 1; +#endif tlb_remove_page(tlb, virt_to_page(pmd)); } diff --git a/include/asm-generic/tlb.h b/include/asm-generic/tlb.h index 25f01d0..b1b1fa6 100644 --- a/include/asm-generic/tlb.h +++ b/include/asm-generic/tlb.h @@ -99,7 +99,12 @@ struct mmu_gather { unsigned int need_flush : 1, /* Did free PTEs */ fast_mode : 1; /* No batching */ - unsigned int fullmm; + /* we are in the middle of an operation to clear + * a full mm and can make some optimizations */ + unsigned int fullmm : 1, + /* we have performed an operation which + * requires a complete flush of the tlb */ + need_flush_all : 1; struct mmu_gather_batch *active; struct mmu_gather_batch local; diff --git a/mm/memory.c b/mm/memory.c index 494526a..13cbc42 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -216,6 +216,7 @@ void tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, bool fullmm) tlb->mm = mm; tlb->fullmm = fullmm; + tlb->need_flush_all = 0; tlb->start = -1UL; tlb->end = 0; tlb->need_flush = 0; -- cgit v1.1 From 4bc4bee4595662d8bff92180d5c32e3313a704b0 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 5 Apr 2013 20:50:09 +0000 Subject: Btrfs: make sure nbytes are right after log replay While trying to track down a tree log replay bug I noticed that fsck was always complaining about nbytes not being right for our fsynced file. That is because the new fsync stuff doesn't wait for ordered extents to complete, so the inodes nbytes are not necessarily updated properly when we log it. So to fix this we need to set nbytes to whatever it is on the inode that is on disk, so when we replay the extents we can just add the bytes that are being added as we replay the extent. This makes it work for the case that we have the wrong nbytes or the case that we logged everything and nbytes is actually correct. With this I'm no longer getting nbytes errors out of btrfsck. Cc: stable@vger.kernel.org Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/tree-log.c | 48 ++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 42 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 451fad9..ef96381 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -317,6 +317,7 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans, unsigned long src_ptr; unsigned long dst_ptr; int overwrite_root = 0; + bool inode_item = key->type == BTRFS_INODE_ITEM_KEY; if (root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) overwrite_root = 1; @@ -326,6 +327,9 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans, /* look for the key in the destination tree */ ret = btrfs_search_slot(NULL, root, key, path, 0, 0); + if (ret < 0) + return ret; + if (ret == 0) { char *src_copy; char *dst_copy; @@ -367,6 +371,30 @@ static noinline int overwrite_item(struct btrfs_trans_handle *trans, return 0; } + /* + * We need to load the old nbytes into the inode so when we + * replay the extents we've logged we get the right nbytes. + */ + if (inode_item) { + struct btrfs_inode_item *item; + u64 nbytes; + + item = btrfs_item_ptr(path->nodes[0], path->slots[0], + struct btrfs_inode_item); + nbytes = btrfs_inode_nbytes(path->nodes[0], item); + item = btrfs_item_ptr(eb, slot, + struct btrfs_inode_item); + btrfs_set_inode_nbytes(eb, item, nbytes); + } + } else if (inode_item) { + struct btrfs_inode_item *item; + + /* + * New inode, set nbytes to 0 so that the nbytes comes out + * properly when we replay the extents. + */ + item = btrfs_item_ptr(eb, slot, struct btrfs_inode_item); + btrfs_set_inode_nbytes(eb, item, 0); } insert: btrfs_release_path(path); @@ -486,7 +514,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, int found_type; u64 extent_end; u64 start = key->offset; - u64 saved_nbytes; + u64 nbytes = 0; struct btrfs_file_extent_item *item; struct inode *inode = NULL; unsigned long size; @@ -496,10 +524,19 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, found_type = btrfs_file_extent_type(eb, item); if (found_type == BTRFS_FILE_EXTENT_REG || - found_type == BTRFS_FILE_EXTENT_PREALLOC) - extent_end = start + btrfs_file_extent_num_bytes(eb, item); - else if (found_type == BTRFS_FILE_EXTENT_INLINE) { + found_type == BTRFS_FILE_EXTENT_PREALLOC) { + nbytes = btrfs_file_extent_num_bytes(eb, item); + extent_end = start + nbytes; + + /* + * We don't add to the inodes nbytes if we are prealloc or a + * hole. + */ + if (btrfs_file_extent_disk_bytenr(eb, item) == 0) + nbytes = 0; + } else if (found_type == BTRFS_FILE_EXTENT_INLINE) { size = btrfs_file_extent_inline_len(eb, item); + nbytes = btrfs_file_extent_ram_bytes(eb, item); extent_end = ALIGN(start + size, root->sectorsize); } else { ret = 0; @@ -548,7 +585,6 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, } btrfs_release_path(path); - saved_nbytes = inode_get_bytes(inode); /* drop any overlapping extents */ ret = btrfs_drop_extents(trans, root, inode, start, extent_end, 1); BUG_ON(ret); @@ -635,7 +671,7 @@ static noinline int replay_one_extent(struct btrfs_trans_handle *trans, BUG_ON(ret); } - inode_set_bytes(inode, saved_nbytes); + inode_add_bytes(inode, nbytes); ret = btrfs_update_inode(trans, root, inode); out: if (inode) -- cgit v1.1 From a49b7e82cab0f9b41f483359be83f44fbb6b4979 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 13 Apr 2013 15:15:30 -0700 Subject: kobject: fix kset_find_obj() race with concurrent last kobject_put() Anatol Pomozov identified a race condition that hits module unloading and re-loading. To quote Anatol: "This is a race codition that exists between kset_find_obj() and kobject_put(). kset_find_obj() might return kobject that has refcount equal to 0 if this kobject is freeing by kobject_put() in other thread. Here is timeline for the crash in case if kset_find_obj() searches for an object tht nobody holds and other thread is doing kobject_put() on the same kobject: THREAD A (calls kset_find_obj()) THREAD B (calls kobject_put()) splin_lock() atomic_dec_return(kobj->kref), counter gets zero here ... starts kobject cleanup .... spin_lock() // WAIT thread A in kobj_kset_leave() iterate over kset->list atomic_inc(kobj->kref) (counter becomes 1) spin_unlock() spin_lock() // taken // it does not know that thread A increased counter so it remove obj from list spin_unlock() vfree(module) // frees module object with containing kobj // kobj points to freed memory area!! kobject_put(kobj) // OOPS!!!! The race above happens because module.c tries to use kset_find_obj() when somebody unloads module. The module.c code was introduced in commit 6494a93d55fa" Anatol supplied a patch specific for module.c that worked around the problem by simply not using kset_find_obj() at all, but rather than make a local band-aid, this just fixes kset_find_obj() to be thread-safe using the proper model of refusing the get a new reference if the refcount has already dropped to zero. See examples of this proper refcount handling not only in the kref documentation, but in various other equivalent uses of this pattern by grepping for atomic_inc_not_zero(). [ Side note: the module race does indicate that module loading and unloading is not properly serialized wrt sysfs information using the module mutex. That may require further thought, but this is the correct fix at the kobject layer regardless. ] Reported-analyzed-and-tested-by: Anatol Pomozov Cc: Greg Kroah-Hartman Cc: Al Viro Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- lib/kobject.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/lib/kobject.c b/lib/kobject.c index e07ee1f..a654866 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -529,6 +529,13 @@ struct kobject *kobject_get(struct kobject *kobj) return kobj; } +static struct kobject *kobject_get_unless_zero(struct kobject *kobj) +{ + if (!kref_get_unless_zero(&kobj->kref)) + kobj = NULL; + return kobj; +} + /* * kobject_cleanup - free kobject resources. * @kobj: object to cleanup @@ -751,7 +758,7 @@ struct kobject *kset_find_obj(struct kset *kset, const char *name) list_for_each_entry(k, &kset->list, entry) { if (kobject_name(k) && !strcmp(kobject_name(k), name)) { - ret = kobject_get(k); + ret = kobject_get_unless_zero(k); break; } } -- cgit v1.1 From 5b55d708335a9e3e4f61f2dadf7511502205ccd1 Mon Sep 17 00:00:00 2001 From: Suleiman Souhlal Date: Sat, 13 Apr 2013 16:03:06 -0700 Subject: vfs: Revert spurious fix to spinning prevention in prune_icache_sb Revert commit 62a3ddef6181 ("vfs: fix spinning prevention in prune_icache_sb"). This commit doesn't look right: since we are looking at the tail of the list (sb->s_inode_lru.prev) if we want to skip an inode, we should put it back at the head of the list instead of the tail, otherwise we will keep spinning on it. Discovered when investigating why prune_icache_sb came top in perf reports of a swapping load. Signed-off-by: Suleiman Souhlal Signed-off-by: Hugh Dickins Cc: stable@vger.kernel.org # v3.2+ Signed-off-by: Linus Torvalds --- fs/inode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/inode.c b/fs/inode.c index f5f7c06..a898b3d 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -725,7 +725,7 @@ void prune_icache_sb(struct super_block *sb, int nr_to_scan) * inode to the back of the list so we don't spin on it. */ if (!spin_trylock(&inode->i_lock)) { - list_move_tail(&inode->i_lru, &sb->s_inode_lru); + list_move(&inode->i_lru, &sb->s_inode_lru); continue; } -- cgit v1.1 From 09549cd01726a7ff8b102a93e46b059531583ab6 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Wed, 10 Apr 2013 14:36:22 +0200 Subject: watchdog: Revert the AT91RM9200_WATCHDOG dependency Compiling the at91rm9200_wdt.c driver without at91rm9200 support was leading to several errors: drivers/built-in.o: In function `at91_wdt_close': at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91_wdt_write': at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91wdt_shutdown': at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91wdt_suspend': at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base' drivers/built-in.o: In function `at91_wdt_open': at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base' drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to `at91_st_base' follow So, reverting the modification of the "depends" Kconfig line introduced by patch a6a1bcd37 (watchdog: at91rm9200: add DT support) seems to be the good solution. Signed-off-by: Nicolas Ferre Acked-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 9fcc70c..e89fc31 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -117,7 +117,7 @@ config ARM_SP805_WATCHDOG config AT91RM9200_WATCHDOG tristate "AT91RM9200 watchdog" - depends on ARCH_AT91 + depends on ARCH_AT91RM9200 help Watchdog timer embedded into AT91RM9200 chips. This will reboot your system when the timeout is reached. -- cgit v1.1 From 935d8aabd4331f47a89c3e1daa5779d23cf244ee Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 14 Apr 2013 10:06:31 -0700 Subject: Add file_ns_capable() helper function for open-time capability checking Nothing is using it yet, but this will allow us to delay the open-time checks to use time, without breaking the normal UNIX permission semantics where permissions are determined by the opener (and the file descriptor can then be passed to a different process, or the process can drop capabilities). Signed-off-by: Linus Torvalds --- include/linux/capability.h | 2 ++ kernel/capability.c | 24 ++++++++++++++++++++++++ 2 files changed, 26 insertions(+) diff --git a/include/linux/capability.h b/include/linux/capability.h index 98503b7..d9a4f7f 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -35,6 +35,7 @@ struct cpu_vfs_cap_data { #define _KERNEL_CAP_T_SIZE (sizeof(kernel_cap_t)) +struct file; struct inode; struct dentry; struct user_namespace; @@ -211,6 +212,7 @@ extern bool capable(int cap); extern bool ns_capable(struct user_namespace *ns, int cap); extern bool nsown_capable(int cap); extern bool inode_capable(const struct inode *inode, int cap); +extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap); /* audit system wants to get cap info from files as well */ extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); diff --git a/kernel/capability.c b/kernel/capability.c index 493d972..f6c2ce5 100644 --- a/kernel/capability.c +++ b/kernel/capability.c @@ -393,6 +393,30 @@ bool ns_capable(struct user_namespace *ns, int cap) EXPORT_SYMBOL(ns_capable); /** + * file_ns_capable - Determine if the file's opener had a capability in effect + * @file: The file we want to check + * @ns: The usernamespace we want the capability in + * @cap: The capability to be tested for + * + * Return true if task that opened the file had a capability in effect + * when the file was opened. + * + * This does not set PF_SUPERPRIV because the caller may not + * actually be privileged. + */ +bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap) +{ + if (WARN_ON_ONCE(!cap_valid(cap))) + return false; + + if (security_capable(file->f_cred, ns, cap) == 0) + return true; + + return false; +} +EXPORT_SYMBOL(file_ns_capable); + +/** * capable - Determine if the current task has a superior capability in effect * @cap: The capability to be tested for * -- cgit v1.1 From 41ef2d5678d83af030125550329b6ae8b74618fa Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 14 Apr 2013 17:45:16 -0700 Subject: Linux 3.9-rc7 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 6db672b..9cf6783 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 9 SUBLEVEL = 0 -EXTRAVERSION = -rc6 +EXTRAVERSION = -rc7 NAME = Unicycling Gorilla # *DOCUMENTATION* -- cgit v1.1 From cd3ff762991ebf309e089ed5a87a8965f175f46a Mon Sep 17 00:00:00 2001 From: Markus Pargmann Date: Sun, 14 Apr 2013 13:42:52 +0200 Subject: ASoC: fsl-ssi: Add SACNT definitions Add definitions for AC97 control register. Signed-off-by: Markus Pargmann Acked-by: Timur Tabi Signed-off-by: Mark Brown --- sound/soc/fsl/fsl_ssi.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/sound/soc/fsl/fsl_ssi.h b/sound/soc/fsl/fsl_ssi.h index 2173000..e6b9a69 100644 --- a/sound/soc/fsl/fsl_ssi.h +++ b/sound/soc/fsl/fsl_ssi.h @@ -196,5 +196,13 @@ struct ccsr_ssi { #define CCSR_SSI_SOR_WAIT(x) (((x) & 3) << CCSR_SSI_SOR_WAIT_SHIFT) #define CCSR_SSI_SOR_SYNRST 0x00000001 +#define CCSR_SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5) +#define CCSR_SSI_SACNT_WR 0x00000010 +#define CCSR_SSI_SACNT_RD 0x00000008 +#define CCSR_SSI_SACNT_RDWR_MASK 0x00000018 +#define CCSR_SSI_SACNT_TIF 0x00000004 +#define CCSR_SSI_SACNT_FV 0x00000002 +#define CCSR_SSI_SACNT_AC97EN 0x00000001 + #endif -- cgit v1.1 From 7c1c1d4a7b4ca1266057a3632d27450f5575caf9 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:48 +0200 Subject: ASoC: dmaengine-pcm: Make requesting the DMA channel at PCM open optional Refactor the dmaengine PCM library to allow the DMA channel to be requested before opening a PCM substream. snd_dmaengine_pcm_open() now expects a DMA channel instead of a filter function and filter parameter as its parameters. snd_dmaengine_pcm_close() is updated to not release the DMA channel. This allows a dmaengine based PCM driver to request its channels before the substream is opened. The patch also introduces two new functions, snd_dmaengine_pcm_open_request_chan() and snd_dmaengine_pcm_close_release_chan(), which have the same signature and behaviour of the old snd_dmaengine_pcm_{open,close}() and internally use the new variants of these functions. All users of snd_dmaengine_pcm_{open,close}() are updated to use snd_dmaengine_pcm_open_request_chan() and snd_dmaengine_pcm_close_release_chan(). Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Tested-by: Shawn Guo Signed-off-by: Mark Brown --- include/sound/dmaengine_pcm.h | 6 +++- sound/soc/atmel/atmel-pcm-dma.c | 6 ++-- sound/soc/cirrus/ep93xx-pcm.c | 5 +-- sound/soc/fsl/imx-pcm-dma.c | 2 +- sound/soc/mxs/mxs-pcm.c | 4 +-- sound/soc/omap/omap-pcm.c | 7 ++-- sound/soc/pxa/mmp-pcm.c | 5 +-- sound/soc/soc-dmaengine-pcm.c | 72 ++++++++++++++++++++++++++++------------- sound/soc/spear/spear_pcm.c | 5 +-- sound/soc/tegra/tegra_pcm.c | 4 +-- sound/soc/ux500/ux500_pcm.c | 6 ++-- 11 files changed, 78 insertions(+), 44 deletions(-) diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index 9562042..d015d67 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -39,9 +39,13 @@ snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream) snd_pcm_uframes_t snd_dmaengine_pcm_pointer_no_residue(struct snd_pcm_substream *substream); int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, - dma_filter_fn filter_fn, void *filter_data); + struct dma_chan *chan); int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream); +int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, + dma_filter_fn filter_fn, void *filter_data); +int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream); + struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream); /** diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c index bb07989..1d38fd0 100644 --- a/sound/soc/atmel/atmel-pcm-dma.c +++ b/sound/soc/atmel/atmel-pcm-dma.c @@ -155,7 +155,7 @@ static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, if (ssc->pdev) sdata = ssc->pdev->dev.platform_data; - ret = snd_dmaengine_pcm_open(substream, filter, sdata); + ret = snd_dmaengine_pcm_open_request_chan(substream, filter, sdata); if (ret) { pr_err("atmel-pcm: dmaengine pcm open failed\n"); return -EINVAL; @@ -171,7 +171,7 @@ static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, return 0; err: - snd_dmaengine_pcm_close(substream); + snd_dmaengine_pcm_close_release_chan(substream); return ret; } @@ -197,7 +197,7 @@ static int atmel_pcm_open(struct snd_pcm_substream *substream) static struct snd_pcm_ops atmel_pcm_ops = { .open = atmel_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = atmel_pcm_hw_params, .prepare = atmel_pcm_dma_prepare, diff --git a/sound/soc/cirrus/ep93xx-pcm.c b/sound/soc/cirrus/ep93xx-pcm.c index 298946f..4880326 100644 --- a/sound/soc/cirrus/ep93xx-pcm.c +++ b/sound/soc/cirrus/ep93xx-pcm.c @@ -69,7 +69,8 @@ static int ep93xx_pcm_open(struct snd_pcm_substream *substream) snd_soc_set_runtime_hwparams(substream, &ep93xx_pcm_hardware); - return snd_dmaengine_pcm_open(substream, ep93xx_pcm_dma_filter, + return snd_dmaengine_pcm_open_request_chan(substream, + ep93xx_pcm_dma_filter, snd_soc_dai_get_dma_data(rtd->cpu_dai, substream)); } @@ -100,7 +101,7 @@ static int ep93xx_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops ep93xx_pcm_ops = { .open = ep93xx_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = ep93xx_pcm_hw_params, .hw_free = ep93xx_pcm_hw_free, diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c index ee838c8..c664782 100644 --- a/sound/soc/fsl/imx-pcm-dma.c +++ b/sound/soc/fsl/imx-pcm-dma.c @@ -100,7 +100,7 @@ static int snd_imx_open(struct snd_pcm_substream *substream) static struct snd_pcm_ops imx_pcm_ops = { .open = snd_imx_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_imx_pcm_hw_params, .trigger = snd_dmaengine_pcm_trigger, diff --git a/sound/soc/mxs/mxs-pcm.c b/sound/soc/mxs/mxs-pcm.c index ebbef85..7bceb16 100644 --- a/sound/soc/mxs/mxs-pcm.c +++ b/sound/soc/mxs/mxs-pcm.c @@ -87,7 +87,7 @@ static int snd_mxs_open(struct snd_pcm_substream *substream) snd_soc_set_runtime_hwparams(substream, &snd_mxs_hardware); - return snd_dmaengine_pcm_open(substream, filter, + return snd_dmaengine_pcm_open_request_chan(substream, filter, snd_soc_dai_get_dma_data(rtd->cpu_dai, substream)); } @@ -104,7 +104,7 @@ static int snd_mxs_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops mxs_pcm_ops = { .open = snd_mxs_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = snd_mxs_pcm_hw_params, .trigger = snd_dmaengine_pcm_trigger, diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index c8e272f..c28e042 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -118,8 +118,9 @@ static int omap_pcm_open(struct snd_pcm_substream *substream) dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); - return snd_dmaengine_pcm_open(substream, omap_dma_filter_fn, - dma_data->filter_data); + return snd_dmaengine_pcm_open_request_chan(substream, + omap_dma_filter_fn, + dma_data->filter_data); } static int omap_pcm_mmap(struct snd_pcm_substream *substream, @@ -135,7 +136,7 @@ static int omap_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops omap_pcm_ops = { .open = omap_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = omap_pcm_hw_params, .hw_free = omap_pcm_hw_free, diff --git a/sound/soc/pxa/mmp-pcm.c b/sound/soc/pxa/mmp-pcm.c index 6c39802..34993001 100644 --- a/sound/soc/pxa/mmp-pcm.c +++ b/sound/soc/pxa/mmp-pcm.c @@ -131,7 +131,8 @@ static int mmp_pcm_open(struct snd_pcm_substream *substream) dma_data.dma_res = r; dma_data.ssp_id = cpu_dai->id; - return snd_dmaengine_pcm_open(substream, filter, &dma_data); + return snd_dmaengine_pcm_open_request_chan(substream, filter, + &dma_data); } static int mmp_pcm_mmap(struct snd_pcm_substream *substream, @@ -148,7 +149,7 @@ static int mmp_pcm_mmap(struct snd_pcm_substream *substream, struct snd_pcm_ops mmp_pcm_ops = { .open = mmp_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = mmp_pcm_hw_params, .trigger = snd_dmaengine_pcm_trigger, diff --git a/sound/soc/soc-dmaengine-pcm.c b/sound/soc/soc-dmaengine-pcm.c index a9a300a..b0420a7 100644 --- a/sound/soc/soc-dmaengine-pcm.c +++ b/sound/soc/soc-dmaengine-pcm.c @@ -254,44 +254,38 @@ snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream) } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer); -static int dmaengine_pcm_request_channel(struct dmaengine_pcm_runtime_data *prtd, - dma_filter_fn filter_fn, void *filter_data) +static struct dma_chan *dmaengine_pcm_request_channel(dma_filter_fn filter_fn, + void *filter_data) { dma_cap_mask_t mask; dma_cap_zero(mask); dma_cap_set(DMA_SLAVE, mask); dma_cap_set(DMA_CYCLIC, mask); - prtd->dma_chan = dma_request_channel(mask, filter_fn, filter_data); - - if (!prtd->dma_chan) - return -ENXIO; - return 0; + return dma_request_channel(mask, filter_fn, filter_data); } /** * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream * @substream: PCM substream - * @filter_fn: Filter function used to request the DMA channel - * @filter_data: Data passed to the DMA filter function + * @chan: DMA channel to use for data transfers * * Returns 0 on success, a negative error code otherwise. * - * This function will request a DMA channel using the passed filter function and - * data. The function should usually be called from the pcm open callback. - * - * Note that this function will use private_data field of the substream's - * runtime. So it is not availabe to your pcm driver implementation. If you need - * to keep additional data attached to a substream use - * snd_dmaengine_pcm_{set,get}_data. + * The function should usually be called from the pcm open callback. Note that + * this function will use private_data field of the substream's runtime. So it + * is not availabe to your pcm driver implementation. */ int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, - dma_filter_fn filter_fn, void *filter_data) + struct dma_chan *chan) { struct dmaengine_pcm_runtime_data *prtd; int ret; + if (!chan) + return -ENXIO; + ret = snd_pcm_hw_constraint_integer(substream->runtime, SNDRV_PCM_HW_PARAM_PERIODS); if (ret < 0) @@ -301,11 +295,7 @@ int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, if (!prtd) return -ENOMEM; - ret = dmaengine_pcm_request_channel(prtd, filter_fn, filter_data); - if (ret < 0) { - kfree(prtd); - return ret; - } + prtd->dma_chan = chan; substream->runtime->private_data = prtd; @@ -314,6 +304,27 @@ int snd_dmaengine_pcm_open(struct snd_pcm_substream *substream, EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open); /** + * snd_dmaengine_pcm_open_request_chan - Open a dmaengine based PCM substream and request channel + * @substream: PCM substream + * @filter_fn: Filter function used to request the DMA channel + * @filter_data: Data passed to the DMA filter function + * + * Returns 0 on success, a negative error code otherwise. + * + * This function will request a DMA channel using the passed filter function and + * data. The function should usually be called from the pcm open callback. Note + * that this function will use private_data field of the substream's runtime. So + * it is not availabe to your pcm driver implementation. + */ +int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, + dma_filter_fn filter_fn, void *filter_data) +{ + return snd_dmaengine_pcm_open(substream, + dmaengine_pcm_request_channel(filter_fn, filter_data)); +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan); + +/** * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream * @substream: PCM substream */ @@ -321,11 +332,26 @@ int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) { struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - dma_release_channel(prtd->dma_chan); kfree(prtd); return 0; } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close); +/** + * snd_dmaengine_pcm_release_chan_close - Close a dmaengine based PCM substream and release channel + * @substream: PCM substream + * + * Releases the DMA channel associated with the PCM substream. + */ +int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream) +{ + struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); + + dma_release_channel(prtd->dma_chan); + + return snd_dmaengine_pcm_close(substream); +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan); + MODULE_LICENSE("GPL"); diff --git a/sound/soc/spear/spear_pcm.c b/sound/soc/spear/spear_pcm.c index db75d72..ba66a3f 100644 --- a/sound/soc/spear/spear_pcm.c +++ b/sound/soc/spear/spear_pcm.c @@ -64,7 +64,8 @@ static int spear_pcm_open(struct snd_pcm_substream *substream) if (ret) return ret; - return snd_dmaengine_pcm_open(substream, dma_data->filter, dma_data) + return snd_dmaengine_pcm_open_request_chan(substream, dma_data->filter, + dma_data); } static int spear_pcm_mmap(struct snd_pcm_substream *substream, @@ -79,7 +80,7 @@ static int spear_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops spear_pcm_ops = { .open = spear_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = spear_pcm_hw_params, .hw_free = spear_pcm_hw_free, diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c index f91d08b..32d0811 100644 --- a/sound/soc/tegra/tegra_pcm.c +++ b/sound/soc/tegra/tegra_pcm.c @@ -66,7 +66,7 @@ static int tegra_pcm_open(struct snd_pcm_substream *substream) /* Set HW params now that initialization is complete */ snd_soc_set_runtime_hwparams(substream, &tegra_pcm_hardware); - ret = snd_dmaengine_pcm_open(substream, NULL, NULL); + ret = snd_dmaengine_pcm_open_request_chan(substream, NULL, NULL); if (ret) { dev_err(dev, "dmaengine pcm open failed with err %d\n", ret); return ret; @@ -144,7 +144,7 @@ static int tegra_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops tegra_pcm_ops = { .open = tegra_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = tegra_pcm_hw_params, .hw_free = tegra_pcm_hw_free, diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c index 09b5364..a7d4f04 100644 --- a/sound/soc/ux500/ux500_pcm.c +++ b/sound/soc/ux500/ux500_pcm.c @@ -125,8 +125,8 @@ static int ux500_pcm_open(struct snd_pcm_substream *substream) dma_cfg->dst_info.data_width = mem_data_width; } - - ret = snd_dmaengine_pcm_open(substream, stedma40_filter, dma_cfg); + ret = snd_dmaengine_pcm_open_request_chan(substream, stedma40_filter, + dma_cfg); if (ret) { dev_dbg(dai->dev, "%s: ERROR: snd_dmaengine_pcm_open failed (%d)!\n", @@ -211,7 +211,7 @@ static int ux500_pcm_mmap(struct snd_pcm_substream *substream, static struct snd_pcm_ops ux500_pcm_ops = { .open = ux500_pcm_open, - .close = snd_dmaengine_pcm_close, + .close = snd_dmaengine_pcm_close_release_chan, .ioctl = snd_pcm_lib_ioctl, .hw_params = ux500_pcm_hw_params, .hw_free = ux500_pcm_hw_free, -- cgit v1.1 From 71a45cda444f9c47bd63516cf4c24fb6d1ccb151 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:49 +0200 Subject: ASoC: Add snd_soc_{add, remove}_platform snd_soc_{add,remove}_platform are similar to snd_soc_register_platform and snd_soc_unregister_platform with the difference that they won't allocate and free the snd_soc_platform structure. Also add snd_soc_lookup_platform which looks up a platform by the device it has been registered for. Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Tested-by: Shawn Guo Signed-off-by: Mark Brown --- include/sound/soc.h | 4 +++ sound/soc/soc-core.c | 85 ++++++++++++++++++++++++++++++++++++++-------------- 2 files changed, 66 insertions(+), 23 deletions(-) diff --git a/include/sound/soc.h b/include/sound/soc.h index f619905..4429254 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -373,6 +373,10 @@ int snd_soc_poweroff(struct device *dev); int snd_soc_register_platform(struct device *dev, const struct snd_soc_platform_driver *platform_drv); void snd_soc_unregister_platform(struct device *dev); +int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, + const struct snd_soc_platform_driver *platform_drv); +void snd_soc_remove_platform(struct snd_soc_platform *platform); +struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev); int snd_soc_register_codec(struct device *dev, const struct snd_soc_codec_driver *codec_drv, struct snd_soc_dai_driver *dai_drv, int num_dai); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 4d24b5e..0e64af1 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3901,21 +3901,14 @@ void snd_soc_unregister_dais(struct device *dev, size_t count) EXPORT_SYMBOL_GPL(snd_soc_unregister_dais); /** - * snd_soc_register_platform - Register a platform with the ASoC core - * - * @platform: platform to register + * snd_soc_add_platform - Add a platform to the ASoC core + * @dev: The parent device for the platform + * @platform: The platform to add + * @platform_driver: The driver for the platform */ -int snd_soc_register_platform(struct device *dev, +int snd_soc_add_platform(struct device *dev, struct snd_soc_platform *platform, const struct snd_soc_platform_driver *platform_drv) { - struct snd_soc_platform *platform; - - dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); - - platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); - if (platform == NULL) - return -ENOMEM; - /* create platform component name */ platform->name = fmt_single_name(dev, &platform->id); if (platform->name == NULL) { @@ -3938,30 +3931,76 @@ int snd_soc_register_platform(struct device *dev, return 0; } -EXPORT_SYMBOL_GPL(snd_soc_register_platform); +EXPORT_SYMBOL_GPL(snd_soc_add_platform); /** - * snd_soc_unregister_platform - Unregister a platform from the ASoC core + * snd_soc_register_platform - Register a platform with the ASoC core * - * @platform: platform to unregister + * @platform: platform to register */ -void snd_soc_unregister_platform(struct device *dev) +int snd_soc_register_platform(struct device *dev, + const struct snd_soc_platform_driver *platform_drv) { struct snd_soc_platform *platform; + int ret; - list_for_each_entry(platform, &platform_list, list) { - if (dev == platform->dev) - goto found; - } - return; + dev_dbg(dev, "ASoC: platform register %s\n", dev_name(dev)); -found: + platform = kzalloc(sizeof(struct snd_soc_platform), GFP_KERNEL); + if (platform == NULL) + return -ENOMEM; + + ret = snd_soc_add_platform(dev, platform, platform_drv); + if (ret) + kfree(platform); + + return ret; +} +EXPORT_SYMBOL_GPL(snd_soc_register_platform); + +/** + * snd_soc_remove_platform - Remove a platform from the ASoC core + * @platform: the platform to remove + */ +void snd_soc_remove_platform(struct snd_soc_platform *platform) +{ mutex_lock(&client_mutex); list_del(&platform->list); mutex_unlock(&client_mutex); - dev_dbg(dev, "ASoC: Unregistered platform '%s'\n", platform->name); + dev_dbg(platform->dev, "ASoC: Unregistered platform '%s'\n", + platform->name); kfree(platform->name); +} +EXPORT_SYMBOL_GPL(snd_soc_remove_platform); + +struct snd_soc_platform *snd_soc_lookup_platform(struct device *dev) +{ + struct snd_soc_platform *platform; + + list_for_each_entry(platform, &platform_list, list) { + if (dev == platform->dev) + return platform; + } + + return NULL; +} +EXPORT_SYMBOL_GPL(snd_soc_lookup_platform); + +/** + * snd_soc_unregister_platform - Unregister a platform from the ASoC core + * + * @platform: platform to unregister + */ +void snd_soc_unregister_platform(struct device *dev) +{ + struct snd_soc_platform *platform; + + platform = snd_soc_lookup_platform(dev); + if (!platform) + return; + + snd_soc_remove_platform(platform); kfree(platform); } EXPORT_SYMBOL_GPL(snd_soc_unregister_platform); -- cgit v1.1 From 28c4468b00a1e55e08cc20117de968f7c6275441 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:50 +0200 Subject: ASoC: Add a generic dmaengine_pcm driver This patch adds a generic dmaengine PCM driver. It builds on top of the dmaengine PCM library and adds the missing pieces like DMA channel management, buffer management and channel configuration. It will be able to replace the majority of the existing platform specific dmaengine based PCM drivers. Devicetree is used to map the DMA channels to the PCM device. Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Tested-by: Shawn Guo Signed-off-by: Mark Brown --- include/sound/dmaengine_pcm.h | 25 ++++ sound/soc/Kconfig | 4 + sound/soc/Makefile | 4 + sound/soc/soc-generic-dmaengine-pcm.c | 241 ++++++++++++++++++++++++++++++++++ 4 files changed, 274 insertions(+) create mode 100644 sound/soc/soc-generic-dmaengine-pcm.c diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index d015d67..e0bf24e 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -72,4 +72,29 @@ void snd_dmaengine_pcm_set_config_from_dai_data( const struct snd_dmaengine_dai_dma_data *dma_data, struct dma_slave_config *config); +/** + * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM + * @prepare_slave_config: Callback used to fill in the DMA slave_config for a + * PCM substream. Will be called from the PCM drivers hwparams callback. + * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM. + * @prealloc_buffer_size: Size of the preallocated audio buffer. + */ +struct snd_dmaengine_pcm_config { + int (*prepare_slave_config)(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct dma_slave_config *slave_config); + + const struct snd_pcm_hardware *pcm_hardware; + unsigned int prealloc_buffer_size; +}; + +int snd_dmaengine_pcm_register(struct device *dev, + const struct snd_dmaengine_pcm_config *config, + unsigned int flags); +void snd_dmaengine_pcm_unregister(struct device *dev); + +int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct dma_slave_config *slave_config); + #endif diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig index 5da8ca7..9e675c7 100644 --- a/sound/soc/Kconfig +++ b/sound/soc/Kconfig @@ -29,6 +29,10 @@ config SND_SOC_AC97_BUS config SND_SOC_DMAENGINE_PCM bool +config SND_SOC_GENERIC_DMAENGINE_PCM + bool + select SND_SOC_DMAENGINE_PCM + # All the supported SoCs source "sound/soc/atmel/Kconfig" source "sound/soc/au1x/Kconfig" diff --git a/sound/soc/Makefile b/sound/soc/Makefile index 99f32f7..197b6ae 100644 --- a/sound/soc/Makefile +++ b/sound/soc/Makefile @@ -5,6 +5,10 @@ ifneq ($(CONFIG_SND_SOC_DMAENGINE_PCM),) snd-soc-core-objs += soc-dmaengine-pcm.o endif +ifneq ($(CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM),) +snd-soc-core-objs += soc-generic-dmaengine-pcm.o +endif + obj-$(CONFIG_SND_SOC) += snd-soc-core.o obj-$(CONFIG_SND_SOC) += codecs/ obj-$(CONFIG_SND_SOC) += generic/ diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c new file mode 100644 index 0000000..acfc926 --- /dev/null +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -0,0 +1,241 @@ +/* + * Copyright (C) 2013, Analog Devices Inc. + * Author: Lars-Peter Clausen + * + * 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. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +struct dmaengine_pcm { + struct dma_chan *chan[SNDRV_PCM_STREAM_CAPTURE + 1]; + const struct snd_dmaengine_pcm_config *config; + struct snd_soc_platform platform; +}; + +static struct dmaengine_pcm *soc_platform_to_pcm(struct snd_soc_platform *p) +{ + return container_of(p, struct dmaengine_pcm, platform); +} + +/** + * snd_dmaengine_pcm_prepare_slave_config() - Generic prepare_slave_config callback + * @substream: PCM substream + * @params: hw_params + * @slave_config: DMA slave config to prepare + * + * This function can be used as a generic prepare_slave_config callback for + * platforms which make use of the snd_dmaengine_dai_dma_data struct for their + * DAI DMA data. Internally the function will first call + * snd_hwparams_to_dma_slave_config to fill in the slave config based on the + * hw_params, followed by snd_dmaengine_set_config_from_dai_data to fill in the + * remaining fields based on the DAI DMA data. + */ +int snd_dmaengine_pcm_prepare_slave_config(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_dmaengine_dai_dma_data *dma_data; + int ret; + + dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + + ret = snd_hwparams_to_dma_slave_config(substream, params, slave_config); + if (ret) + return ret; + + snd_dmaengine_pcm_set_config_from_dai_data(substream, dma_data, + slave_config); + + return 0; +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_prepare_slave_config); + +static int dmaengine_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform); + struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream); + struct dma_slave_config slave_config; + int ret; + + if (pcm->config->prepare_slave_config) { + ret = pcm->config->prepare_slave_config(substream, params, + &slave_config); + if (ret) + return ret; + + ret = dmaengine_slave_config(chan, &slave_config); + if (ret) + return ret; + } + + return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params)); +} + +static int dmaengine_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform); + struct dma_chan *chan = pcm->chan[substream->stream]; + int ret; + + ret = snd_soc_set_runtime_hwparams(substream, + pcm->config->pcm_hardware); + if (ret) + return ret; + + return snd_dmaengine_pcm_open(substream, chan); +} + +static struct device *dmaengine_dma_dev(struct dmaengine_pcm *pcm, + struct snd_pcm_substream *substream) +{ + if (!pcm->chan[substream->stream]) + return NULL; + + return pcm->chan[substream->stream]->device->dev; +} + +static void dmaengine_pcm_free(struct snd_pcm *pcm) +{ + snd_pcm_lib_preallocate_free_for_all(pcm); +} + +static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd) +{ + struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform); + const struct snd_dmaengine_pcm_config *config = pcm->config; + struct snd_pcm_substream *substream; + unsigned int i; + int ret; + + for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { + substream = rtd->pcm->streams[i].substream; + if (!substream) + continue; + + if (!pcm->chan[i]) { + dev_err(rtd->platform->dev, + "Missing dma channel for stream: %d\n", i); + ret = -EINVAL; + goto err_free; + } + + ret = snd_pcm_lib_preallocate_pages(substream, + SNDRV_DMA_TYPE_DEV, + dmaengine_dma_dev(pcm, substream), + config->prealloc_buffer_size, + config->pcm_hardware->buffer_bytes_max); + if (ret) + goto err_free; + } + + return 0; + +err_free: + dmaengine_pcm_free(rtd->pcm); + return ret; +} + +static const struct snd_pcm_ops dmaengine_pcm_ops = { + .open = dmaengine_pcm_open, + .close = snd_dmaengine_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = dmaengine_pcm_hw_params, + .hw_free = snd_pcm_lib_free_pages, + .trigger = snd_dmaengine_pcm_trigger, + .pointer = snd_dmaengine_pcm_pointer, +}; + +static const struct snd_soc_platform_driver dmaengine_pcm_platform = { + .ops = &dmaengine_pcm_ops, + .pcm_new = dmaengine_pcm_new, + .pcm_free = dmaengine_pcm_free, +}; + +static const char * const dmaengine_pcm_dma_channel_names[] = { + [SNDRV_PCM_STREAM_PLAYBACK] = "tx", + [SNDRV_PCM_STREAM_CAPTURE] = "rx", +}; + +/** + * snd_dmaengine_pcm_register - Register a dmaengine based PCM device + * @dev: The parent device for the PCM device + * @config: Platform specific PCM configuration + * @flags: Platform specific quirks + */ +int snd_dmaengine_pcm_register(struct device *dev, + const struct snd_dmaengine_pcm_config *config, unsigned int flags) +{ + struct dmaengine_pcm *pcm; + unsigned int i; + + if (!dev->of_node) + return -EINVAL; + + pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); + if (!pcm) + return -ENOMEM; + + pcm->config = config; + + for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { + pcm->chan[i] = of_dma_request_slave_channel(dev->of_node, + dmaengine_pcm_dma_channel_names[i]); + } + + return snd_soc_add_platform(dev, &pcm->platform, + &dmaengine_pcm_platform); +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_register); + +/** + * snd_dmaengine_pcm_unregister - Removes a dmaengine based PCM device + * @dev: Parent device the PCM was register with + * + * Removes a dmaengine based PCM device previously registered with + * snd_dmaengine_pcm_register. + */ +void snd_dmaengine_pcm_unregister(struct device *dev) +{ + struct snd_soc_platform *platform; + struct dmaengine_pcm *pcm; + unsigned int i; + + platform = snd_soc_lookup_platform(dev); + if (!platform) + return; + + pcm = soc_platform_to_pcm(platform); + + for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { + if (pcm->chan[i]) + dma_release_channel(pcm->chan[i]); + } + + snd_soc_remove_platform(platform); + kfree(pcm); +} +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_unregister); + +MODULE_LICENSE("GPL"); -- cgit v1.1 From c999836d37c6c1125e856f68877ae13952baa61a Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:51 +0200 Subject: ASoC: dmaengine_pcm: Add support for compat platforms Add support for platforms which don't use devicetree yet or have to optionally support a non-devicetree way to request the DMA channel. The patch adds the compat_request_channel and compat_filter_fn callbacks to the snd_dmaengine_pcm_config struct. If the compat_request_channel is implemented it will be used to request the DMA channel. If not dma_request_channel with compat_filter_fn as the filter function will be used to request the channel. The patch also exports the snd_dmaengine_pcm_request_chan() function, since compat platforms will want to use it to request their DMA channel. Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Tested-by: Shawn Guo Signed-off-by: Mark Brown --- include/sound/dmaengine_pcm.h | 29 +++++++++++++++++++++++++++++ sound/soc/soc-dmaengine-pcm.c | 14 ++++++++++++-- sound/soc/soc-generic-dmaengine-pcm.c | 32 +++++++++++++++++++++++++++----- 3 files changed, 68 insertions(+), 7 deletions(-) diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index e0bf24e..1a7897a 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -16,6 +16,7 @@ #define __SOUND_DMAENGINE_PCM_H__ #include +#include #include /** @@ -46,6 +47,8 @@ int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, dma_filter_fn filter_fn, void *filter_data); int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream); +struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn, + void *filter_data); struct dma_chan *snd_dmaengine_pcm_get_chan(struct snd_pcm_substream *substream); /** @@ -72,17 +75,43 @@ void snd_dmaengine_pcm_set_config_from_dai_data( const struct snd_dmaengine_dai_dma_data *dma_data, struct dma_slave_config *config); + +/* + * Try to request the DMA channel using compat_request_channel or + * compat_filter_fn if it couldn't be requested through devicetree. + */ +#define SND_DMAENGINE_PCM_FLAG_COMPAT BIT(0) +/* + * Don't try to request the DMA channels through devicetree. This flag only + * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well. + */ +#define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1) + /** * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM * @prepare_slave_config: Callback used to fill in the DMA slave_config for a * PCM substream. Will be called from the PCM drivers hwparams callback. + * @compat_request_channel: Callback to request a DMA channel for platforms + * which do not use devicetree. + * @compat_filter_fn: Will be used as the filter function when requesting a + * channel for platforms which do not use devicetree. The filter parameter + * will be the DAI's DMA data. * @pcm_hardware: snd_pcm_hardware struct to be used for the PCM. * @prealloc_buffer_size: Size of the preallocated audio buffer. + * + * Note: If both compat_request_channel and compat_filter_fn are set + * compat_request_channel will be used to request the channel and + * compat_filter_fn will be ignored. Otherwise the channel will be requested + * using dma_request_channel with compat_filter_fn as the filter function. */ struct snd_dmaengine_pcm_config { int (*prepare_slave_config)(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct dma_slave_config *slave_config); + struct dma_chan *(*compat_request_channel)( + struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_substream *substream); + dma_filter_fn compat_filter_fn; const struct snd_pcm_hardware *pcm_hardware; unsigned int prealloc_buffer_size; diff --git a/sound/soc/soc-dmaengine-pcm.c b/sound/soc/soc-dmaengine-pcm.c index b0420a7..aa924d9 100644 --- a/sound/soc/soc-dmaengine-pcm.c +++ b/sound/soc/soc-dmaengine-pcm.c @@ -254,7 +254,16 @@ snd_pcm_uframes_t snd_dmaengine_pcm_pointer(struct snd_pcm_substream *substream) } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_pointer); -static struct dma_chan *dmaengine_pcm_request_channel(dma_filter_fn filter_fn, +/** + * snd_dmaengine_pcm_request_channel - Request channel for the dmaengine PCM + * @filter_fn: Filter function used to request the DMA channel + * @filter_data: Data passed to the DMA filter function + * + * Returns NULL or the requested DMA channel. + * + * This function request a DMA channel for usage with dmaengine PCM. + */ +struct dma_chan *snd_dmaengine_pcm_request_channel(dma_filter_fn filter_fn, void *filter_data) { dma_cap_mask_t mask; @@ -265,6 +274,7 @@ static struct dma_chan *dmaengine_pcm_request_channel(dma_filter_fn filter_fn, return dma_request_channel(mask, filter_fn, filter_data); } +EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_request_channel); /** * snd_dmaengine_pcm_open - Open a dmaengine based PCM substream @@ -320,7 +330,7 @@ int snd_dmaengine_pcm_open_request_chan(struct snd_pcm_substream *substream, dma_filter_fn filter_fn, void *filter_data) { return snd_dmaengine_pcm_open(substream, - dmaengine_pcm_request_channel(filter_fn, filter_data)); + snd_dmaengine_pcm_request_channel(filter_fn, filter_data)); } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan); diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index acfc926..d6e6380 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -29,6 +29,7 @@ struct dmaengine_pcm { struct dma_chan *chan[SNDRV_PCM_STREAM_CAPTURE + 1]; const struct snd_dmaengine_pcm_config *config; struct snd_soc_platform platform; + bool compat; }; static struct dmaengine_pcm *soc_platform_to_pcm(struct snd_soc_platform *p) @@ -121,6 +122,19 @@ static void dmaengine_pcm_free(struct snd_pcm *pcm) snd_pcm_lib_preallocate_free_for_all(pcm); } +static struct dma_chan *dmaengine_pcm_compat_request_channel( + struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_substream *substream) +{ + struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform); + + if (pcm->config->compat_request_channel) + return pcm->config->compat_request_channel(rtd, substream); + + return snd_dmaengine_pcm_request_channel(pcm->config->compat_filter_fn, + snd_soc_dai_get_dma_data(rtd->cpu_dai, substream)); +} + static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd) { struct dmaengine_pcm *pcm = soc_platform_to_pcm(rtd->platform); @@ -134,6 +148,11 @@ static int dmaengine_pcm_new(struct snd_soc_pcm_runtime *rtd) if (!substream) continue; + if (!pcm->chan[i] && pcm->compat) { + pcm->chan[i] = dmaengine_pcm_compat_request_channel(rtd, + substream); + } + if (!pcm->chan[i]) { dev_err(rtd->platform->dev, "Missing dma channel for stream: %d\n", i); @@ -171,6 +190,7 @@ static const struct snd_soc_platform_driver dmaengine_pcm_platform = { .ops = &dmaengine_pcm_ops, .pcm_new = dmaengine_pcm_new, .pcm_free = dmaengine_pcm_free, + .probe_order = SND_SOC_COMP_ORDER_LATE, }; static const char * const dmaengine_pcm_dma_channel_names[] = { @@ -190,18 +210,20 @@ int snd_dmaengine_pcm_register(struct device *dev, struct dmaengine_pcm *pcm; unsigned int i; - if (!dev->of_node) - return -EINVAL; - pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); if (!pcm) return -ENOMEM; pcm->config = config; - for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { - pcm->chan[i] = of_dma_request_slave_channel(dev->of_node, + if (flags & SND_DMAENGINE_PCM_FLAG_COMPAT) + pcm->compat = true; + + if (!(flags & SND_DMAENGINE_PCM_FLAG_NO_DT) && dev->of_node) { + for (i = SNDRV_PCM_STREAM_PLAYBACK; i <= SNDRV_PCM_STREAM_CAPTURE; i++) { + pcm->chan[i] = of_dma_request_slave_channel(dev->of_node, dmaengine_pcm_dma_channel_names[i]); + } } return snd_soc_add_platform(dev, &pcm->platform, -- cgit v1.1 From 11a8576a0a3f153784fc4fca28e6fcee83531135 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:52 +0200 Subject: ASoC: tegra: Use generic dmaengine PCM Use the generic dmaengine PCM driver instead of a custom implementation. Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Signed-off-by: Mark Brown --- sound/soc/tegra/Kconfig | 2 +- sound/soc/tegra/tegra_pcm.c | 171 +++----------------------------------------- 2 files changed, 10 insertions(+), 163 deletions(-) diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig index dbc27ce..b1c9d57 100644 --- a/sound/soc/tegra/Kconfig +++ b/sound/soc/tegra/Kconfig @@ -2,7 +2,7 @@ config SND_SOC_TEGRA tristate "SoC Audio for the Tegra System-on-Chip" depends on ARCH_TEGRA && TEGRA20_APB_DMA select REGMAP_MMIO - select SND_SOC_DMAENGINE_PCM if TEGRA20_APB_DMA + select SND_SOC_GENERIC_DMAENGINE_PCM if TEGRA20_APB_DMA help Say Y or M here if you want support for SoC audio on Tegra. diff --git a/sound/soc/tegra/tegra_pcm.c b/sound/soc/tegra/tegra_pcm.c index f9f247c..f056f63 100644 --- a/sound/soc/tegra/tegra_pcm.c +++ b/sound/soc/tegra/tegra_pcm.c @@ -29,9 +29,7 @@ * */ -#include #include -#include #include #include #include @@ -55,175 +53,24 @@ static const struct snd_pcm_hardware tegra_pcm_hardware = { .fifo_size = 4, }; -static int tegra_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct device *dev = rtd->platform->dev; - int ret; - - /* Set HW params now that initialization is complete */ - snd_soc_set_runtime_hwparams(substream, &tegra_pcm_hardware); - - ret = snd_dmaengine_pcm_open_request_chan(substream, NULL, NULL); - if (ret) { - dev_err(dev, "dmaengine pcm open failed with err %d\n", ret); - return ret; - } - - return 0; -} - -static int tegra_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct device *dev = rtd->platform->dev; - struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream); - struct dma_slave_config slave_config; - int ret; - - ret = snd_hwparams_to_dma_slave_config(substream, params, - &slave_config); - if (ret) { - dev_err(dev, "hw params config failed with err %d\n", ret); - return ret; - } - - snd_dmaengine_pcm_set_config_from_dai_data(substream, - snd_soc_dai_get_dma_data(rtd->cpu_dai, substream), - &slave_config); - - ret = dmaengine_slave_config(chan, &slave_config); - if (ret < 0) { - dev_err(dev, "dma slave config failed with err %d\n", ret); - return ret; - } - - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - return 0; -} - -static int tegra_pcm_hw_free(struct snd_pcm_substream *substream) -{ - snd_pcm_set_runtime_buffer(substream, NULL); - return 0; -} - -static int tegra_pcm_mmap(struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - - return dma_mmap_writecombine(substream->pcm->card->dev, vma, - runtime->dma_area, - runtime->dma_addr, - runtime->dma_bytes); -} - -static struct snd_pcm_ops tegra_pcm_ops = { - .open = tegra_pcm_open, - .close = snd_dmaengine_pcm_close_release_chan, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = tegra_pcm_hw_params, - .hw_free = tegra_pcm_hw_free, - .trigger = snd_dmaengine_pcm_trigger, - .pointer = snd_dmaengine_pcm_pointer, - .mmap = tegra_pcm_mmap, -}; - -static int tegra_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) -{ - struct snd_pcm_substream *substream = pcm->streams[stream].substream; - struct snd_dma_buffer *buf = &substream->dma_buffer; - size_t size = tegra_pcm_hardware.buffer_bytes_max; - - buf->area = dma_alloc_writecombine(pcm->card->dev, size, - &buf->addr, GFP_KERNEL); - if (!buf->area) - return -ENOMEM; - - buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = pcm->card->dev; - buf->private_data = NULL; - buf->bytes = size; - - return 0; -} - -static void tegra_pcm_deallocate_dma_buffer(struct snd_pcm *pcm, int stream) -{ - struct snd_pcm_substream *substream; - struct snd_dma_buffer *buf; - - substream = pcm->streams[stream].substream; - if (!substream) - return; - - buf = &substream->dma_buffer; - if (!buf->area) - return; - - dma_free_writecombine(pcm->card->dev, buf->bytes, - buf->area, buf->addr); - buf->area = NULL; -} - -static u64 tegra_dma_mask = DMA_BIT_MASK(32); - -static int tegra_pcm_new(struct snd_soc_pcm_runtime *rtd) -{ - struct snd_card *card = rtd->card->snd_card; - struct snd_pcm *pcm = rtd->pcm; - int ret = 0; - - if (!card->dev->dma_mask) - card->dev->dma_mask = &tegra_dma_mask; - if (!card->dev->coherent_dma_mask) - card->dev->coherent_dma_mask = DMA_BIT_MASK(32); - - if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { - ret = tegra_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_PLAYBACK); - if (ret) - goto err; - } - - if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - ret = tegra_pcm_preallocate_dma_buffer(pcm, - SNDRV_PCM_STREAM_CAPTURE); - if (ret) - goto err_free_play; - } - - return 0; - -err_free_play: - tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK); -err: - return ret; -} - -static void tegra_pcm_free(struct snd_pcm *pcm) -{ - tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_CAPTURE); - tegra_pcm_deallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK); -} - -static struct snd_soc_platform_driver tegra_pcm_platform = { - .ops = &tegra_pcm_ops, - .pcm_new = tegra_pcm_new, - .pcm_free = tegra_pcm_free, +static const struct snd_dmaengine_pcm_config tegra_dmaengine_pcm_config = { + .pcm_hardware = &tegra_pcm_hardware, + .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, + .compat_filter_fn = NULL, + .prealloc_buffer_size = PAGE_SIZE * 8, }; int tegra_pcm_platform_register(struct device *dev) { - return snd_soc_register_platform(dev, &tegra_pcm_platform); + return snd_dmaengine_pcm_register(dev, &tegra_dmaengine_pcm_config, + SND_DMAENGINE_PCM_FLAG_NO_DT | + SND_DMAENGINE_PCM_FLAG_COMPAT); } EXPORT_SYMBOL_GPL(tegra_pcm_platform_register); void tegra_pcm_platform_unregister(struct device *dev) { - snd_soc_unregister_platform(dev); + return snd_dmaengine_pcm_unregister(dev); } EXPORT_SYMBOL_GPL(tegra_pcm_platform_unregister); -- cgit v1.1 From 610f780050090db1af024bd060f819478a656cd0 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:55 +0200 Subject: ASoC: dmaengine-pcm: Add support for platforms which can't report residue Unfortunately there are still quite a few platforms with a dmaengine driver which do not support reporting the number of bytes left to transfer. If we want to support these platforms in the generic dmaengine PCM driver we have. Signed-off-by: Lars-Peter Clausen Tested-by: Stephen Warren Tested-by: Shawn Guo Signed-off-by: Mark Brown --- include/sound/dmaengine_pcm.h | 5 +++++ sound/soc/soc-generic-dmaengine-pcm.c | 23 ++++++++++++++++++++++- 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index 1a7897a..e705286 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -86,6 +86,11 @@ void snd_dmaengine_pcm_set_config_from_dai_data( * makes sense if SND_DMAENGINE_PCM_FLAG_COMPAT is set as well. */ #define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1) +/* + * The platforms dmaengine driver does not support reporting the ammount of + * bytes that are still left to transfer. + */ +#define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(2) /** * struct snd_dmaengine_pcm_config - Configuration data for dmaengine based PCM diff --git a/sound/soc/soc-generic-dmaengine-pcm.c b/sound/soc/soc-generic-dmaengine-pcm.c index d6e6380..ae0c37e 100644 --- a/sound/soc/soc-generic-dmaengine-pcm.c +++ b/sound/soc/soc-generic-dmaengine-pcm.c @@ -193,6 +193,23 @@ static const struct snd_soc_platform_driver dmaengine_pcm_platform = { .probe_order = SND_SOC_COMP_ORDER_LATE, }; +static const struct snd_pcm_ops dmaengine_no_residue_pcm_ops = { + .open = dmaengine_pcm_open, + .close = snd_dmaengine_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = dmaengine_pcm_hw_params, + .hw_free = snd_pcm_lib_free_pages, + .trigger = snd_dmaengine_pcm_trigger, + .pointer = snd_dmaengine_pcm_pointer_no_residue, +}; + +static const struct snd_soc_platform_driver dmaengine_no_residue_pcm_platform = { + .ops = &dmaengine_no_residue_pcm_ops, + .pcm_new = dmaengine_pcm_new, + .pcm_free = dmaengine_pcm_free, + .probe_order = SND_SOC_COMP_ORDER_LATE, +}; + static const char * const dmaengine_pcm_dma_channel_names[] = { [SNDRV_PCM_STREAM_PLAYBACK] = "tx", [SNDRV_PCM_STREAM_CAPTURE] = "rx", @@ -226,7 +243,11 @@ int snd_dmaengine_pcm_register(struct device *dev, } } - return snd_soc_add_platform(dev, &pcm->platform, + if (flags & SND_DMAENGINE_PCM_FLAG_NO_RESIDUE) + return snd_soc_add_platform(dev, &pcm->platform, + &dmaengine_no_residue_pcm_platform); + else + return snd_soc_add_platform(dev, &pcm->platform, &dmaengine_pcm_platform); } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_register); -- cgit v1.1 From fc8ba7f94d84e1ccd351e41c778e36710834334e Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:58 +0200 Subject: ASoC: imx: Setup dma data in DAI probe This allows us to access the DAI DMA data when we create the PCM. We'll use this when converting imx to generic DMA engine PCM driver. Signed-off-by: Lars-Peter Clausen Tested-by: Shawn Guo Signed-off-by: Mark Brown --- sound/soc/fsl/fsl_ssi.c | 19 +++++++++++++------ sound/soc/fsl/imx-ssi.c | 22 ++++------------------ 2 files changed, 17 insertions(+), 24 deletions(-) diff --git a/sound/soc/fsl/fsl_ssi.c b/sound/soc/fsl/fsl_ssi.c index 8a7eac4..ab27ffa 100644 --- a/sound/soc/fsl/fsl_ssi.c +++ b/sound/soc/fsl/fsl_ssi.c @@ -425,12 +425,6 @@ static int fsl_ssi_startup(struct snd_pcm_substream *substream, ssi_private->second_stream = substream; } - if (ssi_private->ssi_on_imx) - snd_soc_dai_set_dma_data(dai, substream, - (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) ? - &ssi_private->dma_params_tx : - &ssi_private->dma_params_rx); - return 0; } @@ -552,6 +546,18 @@ static void fsl_ssi_shutdown(struct snd_pcm_substream *substream, } } +static int fsl_ssi_dai_probe(struct snd_soc_dai *dai) +{ + struct fsl_ssi_private *ssi_private = snd_soc_dai_get_drvdata(dai); + + if (ssi_private->ssi_on_imx) { + dai->playback_dma_data = &ssi_private->dma_params_tx; + dai->capture_dma_data = &ssi_private->dma_params_rx; + } + + return 0; +} + static const struct snd_soc_dai_ops fsl_ssi_dai_ops = { .startup = fsl_ssi_startup, .hw_params = fsl_ssi_hw_params, @@ -561,6 +567,7 @@ static const struct snd_soc_dai_ops fsl_ssi_dai_ops = { /* Template for the CPU dai driver structure */ static struct snd_soc_dai_driver fsl_ssi_dai_template = { + .probe = fsl_ssi_dai_probe, .playback = { /* The SSI does not support monaural audio. */ .channels_min = 2, diff --git a/sound/soc/fsl/imx-ssi.c b/sound/soc/fsl/imx-ssi.c index 7c84eb1..9128b7b 100644 --- a/sound/soc/fsl/imx-ssi.c +++ b/sound/soc/fsl/imx-ssi.c @@ -232,23 +232,6 @@ static int imx_ssi_set_dai_clkdiv(struct snd_soc_dai *cpu_dai, return 0; } -static int imx_ssi_startup(struct snd_pcm_substream *substream, - struct snd_soc_dai *cpu_dai) -{ - struct imx_ssi *ssi = snd_soc_dai_get_drvdata(cpu_dai); - struct snd_dmaengine_dai_dma_data *dma_data; - - /* Tx/Rx config */ - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - dma_data = &ssi->dma_params_tx; - else - dma_data = &ssi->dma_params_rx; - - snd_soc_dai_set_dma_data(cpu_dai, substream, dma_data); - - return 0; -} - /* * Should only be called when port is inactive (i.e. SSIEN = 0), * although can be called multiple times by upper layers. @@ -353,7 +336,6 @@ static int imx_ssi_trigger(struct snd_pcm_substream *substream, int cmd, } static const struct snd_soc_dai_ops imx_ssi_pcm_dai_ops = { - .startup = imx_ssi_startup, .hw_params = imx_ssi_hw_params, .set_fmt = imx_ssi_set_dai_fmt, .set_clkdiv = imx_ssi_set_dai_clkdiv, @@ -373,6 +355,10 @@ static int imx_ssi_dai_probe(struct snd_soc_dai *dai) SSI_SFCSR_RFWM0(ssi->dma_params_rx.maxburst); writel(val, ssi->base + SSI_SFCSR); + /* Tx/Rx config */ + dai->playback_dma_data = &ssi->dma_params_tx; + dai->capture_dma_data = &ssi->dma_params_rx; + return 0; } -- cgit v1.1 From adaa3229fbb88532e0d460afad779efbfb92ffeb Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:19:59 +0200 Subject: ASoC: imx: Use generic dmaengine PCM Use the generic dmaengine PCM driver instead of a custom implementation. Signed-off-by: Lars-Peter Clausen Tested-by: Shawn Guo Signed-off-by: Mark Brown --- sound/soc/fsl/Kconfig | 2 +- sound/soc/fsl/imx-pcm-dma.c | 76 +++++++++------------------------------------ sound/soc/fsl/imx-pcm.c | 6 +++- sound/soc/fsl/imx-pcm.h | 5 +++ 4 files changed, 26 insertions(+), 63 deletions(-) diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index 3b98159..3843a18 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -118,7 +118,7 @@ config SND_SOC_IMX_PCM_FIQ config SND_SOC_IMX_PCM_DMA bool - select SND_SOC_DMAENGINE_PCM + select SND_SOC_GENERIC_DMAENGINE_PCM select SND_SOC_IMX_PCM config SND_SOC_IMX_AUDMUX diff --git a/sound/soc/fsl/imx-pcm-dma.c b/sound/soc/fsl/imx-pcm-dma.c index c664782..c246fb5 100644 --- a/sound/soc/fsl/imx-pcm-dma.c +++ b/sound/soc/fsl/imx-pcm-dma.c @@ -11,22 +11,12 @@ * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ -#include -#include -#include -#include -#include -#include -#include #include -#include #include #include #include -#include #include -#include #include #include @@ -44,32 +34,7 @@ static bool filter(struct dma_chan *chan, void *param) return true; } -static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream); - struct dma_slave_config slave_config; - int ret; - - ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config); - if (ret) - return ret; - - snd_dmaengine_pcm_set_config_from_dai_data(substream, - snd_soc_dai_get_dma_data(rtd->cpu_dai, substream), - &slave_config); - - ret = dmaengine_slave_config(chan, &slave_config); - if (ret) - return ret; - - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - - return 0; -} - -static struct snd_pcm_hardware snd_imx_hardware = { +static const struct snd_pcm_hardware imx_pcm_hardware = { .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP | @@ -88,33 +53,22 @@ static struct snd_pcm_hardware snd_imx_hardware = { .fifo_size = 0, }; -static int snd_imx_open(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - - snd_soc_set_runtime_hwparams(substream, &snd_imx_hardware); - - return snd_dmaengine_pcm_open(substream, filter, - snd_soc_dai_get_dma_data(rtd->cpu_dai, substream)); -} - -static struct snd_pcm_ops imx_pcm_ops = { - .open = snd_imx_open, - .close = snd_dmaengine_pcm_close_release_chan, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_imx_pcm_hw_params, - .trigger = snd_dmaengine_pcm_trigger, - .pointer = snd_dmaengine_pcm_pointer_no_residue, - .mmap = snd_imx_pcm_mmap, -}; - -static struct snd_soc_platform_driver imx_soc_platform_mx2 = { - .ops = &imx_pcm_ops, - .pcm_new = imx_pcm_new, - .pcm_free = imx_pcm_free, +static const struct snd_dmaengine_pcm_config imx_dmaengine_pcm_config = { + .pcm_hardware = &imx_pcm_hardware, + .prepare_slave_config = snd_dmaengine_pcm_prepare_slave_config, + .compat_filter_fn = filter, + .prealloc_buffer_size = IMX_SSI_DMABUF_SIZE, }; int imx_pcm_dma_init(struct platform_device *pdev) { - return snd_soc_register_platform(&pdev->dev, &imx_soc_platform_mx2); + return snd_dmaengine_pcm_register(&pdev->dev, &imx_dmaengine_pcm_config, + SND_DMAENGINE_PCM_FLAG_NO_RESIDUE | + SND_DMAENGINE_PCM_FLAG_NO_DT | + SND_DMAENGINE_PCM_FLAG_COMPAT); +} + +void imx_pcm_dma_exit(struct platform_device *pdev) +{ + snd_dmaengine_pcm_unregister(&pdev->dev); } diff --git a/sound/soc/fsl/imx-pcm.c b/sound/soc/fsl/imx-pcm.c index 0d0625b..c498964 100644 --- a/sound/soc/fsl/imx-pcm.c +++ b/sound/soc/fsl/imx-pcm.c @@ -114,7 +114,11 @@ static int imx_pcm_probe(struct platform_device *pdev) static int imx_pcm_remove(struct platform_device *pdev) { - snd_soc_unregister_platform(&pdev->dev); + if (strcmp(pdev->id_entry->name, "imx-fiq-pcm-audio") == 0) + snd_soc_unregister_platform(&pdev->dev); + else + imx_pcm_dma_exit(pdev); + return 0; } diff --git a/sound/soc/fsl/imx-pcm.h b/sound/soc/fsl/imx-pcm.h index be9cc64..b7fa0d7 100644 --- a/sound/soc/fsl/imx-pcm.h +++ b/sound/soc/fsl/imx-pcm.h @@ -39,11 +39,16 @@ void imx_pcm_free(struct snd_pcm *pcm); #ifdef CONFIG_SND_SOC_IMX_PCM_DMA int imx_pcm_dma_init(struct platform_device *pdev); +void imx_pcm_dma_exit(struct platform_device *pdev); #else static inline int imx_pcm_dma_init(struct platform_device *pdev) { return -ENODEV; } + +static inline void imx_pcm_dma_exit(struct platform_device *pdev) +{ +} #endif #ifdef CONFIG_SND_SOC_IMX_PCM_FIQ -- cgit v1.1 From 60b6f1a1e578a5f8a245d4b7622ebf2bad7798cb Mon Sep 17 00:00:00 2001 From: Stas Sergeev Date: Wed, 17 Apr 2013 16:34:06 +0400 Subject: ASoC: define playback and capture streams in dummy codec This patch adds a playback and capture streams to the dummy codec DAI configuration. Most permissive set of sampling rates and formats is used. This patch is needed for playback and capturing on a codec-less systems, as otherwise the PCM device nodes are not even created. Signed-off-by: Stas Sergeev Signed-off-by: Mark Brown --- sound/soc/soc-utils.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/sound/soc/soc-utils.c b/sound/soc/soc-utils.c index fe4541d..4b3be6c 100644 --- a/sound/soc/soc-utils.c +++ b/sound/soc/soc-utils.c @@ -90,8 +90,33 @@ static struct snd_soc_platform_driver dummy_platform = { }; static struct snd_soc_codec_driver dummy_codec; + +#define STUB_RATES SNDRV_PCM_RATE_8000_192000 +#define STUB_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ + SNDRV_PCM_FMTBIT_U8 | \ + SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_U16_LE | \ + SNDRV_PCM_FMTBIT_S24_LE | \ + SNDRV_PCM_FMTBIT_U24_LE | \ + SNDRV_PCM_FMTBIT_S32_LE | \ + SNDRV_PCM_FMTBIT_U32_LE | \ + SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE) static struct snd_soc_dai_driver dummy_dai = { .name = "snd-soc-dummy-dai", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 384, + .rates = STUB_RATES, + .formats = STUB_FORMATS, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 1, + .channels_max = 384, + .rates = STUB_RATES, + .formats = STUB_FORMATS, + }, }; static int snd_soc_dummy_probe(struct platform_device *pdev) -- cgit v1.1 From 98682063549bedd6e2d2b6b7222f150c6fbce68c Mon Sep 17 00:00:00 2001 From: Dylan Reid Date: Tue, 16 Apr 2013 20:02:34 -0700 Subject: ASoC: max98088: Fix logging of hardware revision. The hardware revision of the codec is based at 0x40. Subtract that before convering to ASCII. The same as it is done for 98095. Signed-off-by: Dylan Reid Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/max98088.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c index 3a7b7fd..3eeada5 100644 --- a/sound/soc/codecs/max98088.c +++ b/sound/soc/codecs/max98088.c @@ -2024,7 +2024,7 @@ static int max98088_probe(struct snd_soc_codec *codec) ret); goto err_access; } - dev_info(codec->dev, "revision %c\n", ret + 'A'); + dev_info(codec->dev, "revision %c\n", ret - 0x40 + 'A'); snd_soc_write(codec, M98088_REG_51_PWR_SYS, M98088_PWRSV); -- cgit v1.1 From 22f38f792ec53e2a93be13ecb609bbe911ed8ff9 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 15 Apr 2013 19:20:04 +0200 Subject: ASoC: ux500: Use generic dmaengine PCM Use the generic dmaengine PCM driver instead of a custom implemention. There is a minor functional change, the ux500 PCM driver did not preallocate the audio buffer, while the generic dmaengine PCM driver will do this. Signed-off-by: Lars-Peter Clausen Acked-by: Lee Jones Signed-off-by: Mark Brown --- include/sound/dmaengine_pcm.h | 2 +- sound/soc/ux500/Kconfig | 2 +- sound/soc/ux500/ux500_pcm.c | 159 +++++------------------------------------- 3 files changed, 19 insertions(+), 144 deletions(-) diff --git a/include/sound/dmaengine_pcm.h b/include/sound/dmaengine_pcm.h index e705286..b1d1150 100644 --- a/include/sound/dmaengine_pcm.h +++ b/include/sound/dmaengine_pcm.h @@ -87,7 +87,7 @@ void snd_dmaengine_pcm_set_config_from_dai_data( */ #define SND_DMAENGINE_PCM_FLAG_NO_DT BIT(1) /* - * The platforms dmaengine driver does not support reporting the ammount of + * The platforms dmaengine driver does not support reporting the amount of * bytes that are still left to transfer. */ #define SND_DMAENGINE_PCM_FLAG_NO_RESIDUE BIT(2) diff --git a/sound/soc/ux500/Kconfig b/sound/soc/ux500/Kconfig index 069330d..c73c590 100644 --- a/sound/soc/ux500/Kconfig +++ b/sound/soc/ux500/Kconfig @@ -16,7 +16,7 @@ config SND_SOC_UX500_PLAT_MSP_I2S config SND_SOC_UX500_PLAT_DMA tristate "Platform - DB8500 (DMA)" depends on SND_SOC_UX500 - select SND_SOC_DMAENGINE_PCM + select SND_SOC_GENERIC_DMAENGINE_PCM help Say Y if you want to enable the Ux500 platform-driver. diff --git a/sound/soc/ux500/ux500_pcm.c b/sound/soc/ux500/ux500_pcm.c index a7d4f04..b6e5ae2 100644 --- a/sound/soc/ux500/ux500_pcm.c +++ b/sound/soc/ux500/ux500_pcm.c @@ -40,7 +40,7 @@ #define UX500_PLATFORM_PERIODS_MAX 48 #define UX500_PLATFORM_BUFFER_BYTES_MAX (2048 * PAGE_SIZE) -static struct snd_pcm_hardware ux500_pcm_hw = { +static const struct snd_pcm_hardware ux500_pcm_hw = { .info = SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_RESUME | @@ -61,43 +61,23 @@ static struct snd_pcm_hardware ux500_pcm_hw = { .periods_max = UX500_PLATFORM_PERIODS_MAX, }; -static void ux500_pcm_dma_hw_free(struct device *dev, - struct snd_pcm_substream *substream) +static struct dma_chan *ux500_pcm_request_chan(struct snd_soc_pcm_runtime *rtd, + struct snd_pcm_substream *substream) { - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_dma_buffer *buf = runtime->dma_buffer_p; - - if (runtime->dma_area == NULL) - return; - - if (buf != &substream->dma_buffer) { - dma_free_coherent(buf->dev.dev, buf->bytes, buf->area, - buf->addr); - kfree(runtime->dma_buffer_p); - } - - snd_pcm_set_runtime_buffer(substream, NULL); -} - -static int ux500_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; struct snd_soc_dai *dai = rtd->cpu_dai; struct device *dev = dai->dev; - int ret; - struct ux500_msp_dma_params *dma_params; u16 per_data_width, mem_data_width; struct stedma40_chan_cfg *dma_cfg; + struct ux500_msp_dma_params *dma_params; dev_dbg(dev, "%s: MSP %d (%s): Enter.\n", __func__, dai->id, snd_pcm_stream_str(substream)); - dev_dbg(dev, "%s: Set runtime hwparams.\n", __func__); - snd_soc_set_runtime_hwparams(substream, &ux500_pcm_hw); + dma_params = snd_soc_dai_get_dma_data(dai, substream); + dma_cfg = dma_params->dma_cfg; mem_data_width = STEDMA40_HALFWORD_WIDTH; - dma_params = snd_soc_dai_get_dma_data(dai, substream); switch (dma_params->data_size) { case 32: per_data_width = STEDMA40_WORD_WIDTH; @@ -110,13 +90,8 @@ static int ux500_pcm_open(struct snd_pcm_substream *substream) break; default: per_data_width = STEDMA40_WORD_WIDTH; - dev_warn(rtd->platform->dev, - "%s: Unknown data-size (%d)! Assuming 32 bits.\n", - __func__, dma_params->data_size); } - dma_cfg = dma_params->dma_cfg; - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { dma_cfg->src_info.data_width = mem_data_width; dma_cfg->dst_info.data_width = per_data_width; @@ -125,123 +100,24 @@ static int ux500_pcm_open(struct snd_pcm_substream *substream) dma_cfg->dst_info.data_width = mem_data_width; } - ret = snd_dmaengine_pcm_open_request_chan(substream, stedma40_filter, - dma_cfg); - if (ret) { - dev_dbg(dai->dev, - "%s: ERROR: snd_dmaengine_pcm_open failed (%d)!\n", - __func__, ret); - return ret; - } - - return 0; -} - -static int ux500_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *hw_params) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_dma_buffer *buf = runtime->dma_buffer_p; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - int ret = 0; - int size; - - dev_dbg(rtd->platform->dev, "%s: Enter\n", __func__); - - size = params_buffer_bytes(hw_params); - - if (buf) { - if (buf->bytes >= size) - goto out; - ux500_pcm_dma_hw_free(NULL, substream); - } - - if (substream->dma_buffer.area != NULL && - substream->dma_buffer.bytes >= size) { - buf = &substream->dma_buffer; - } else { - buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL); - if (!buf) - goto nomem; - - buf->dev.type = SNDRV_DMA_TYPE_DEV; - buf->dev.dev = NULL; - buf->area = dma_alloc_coherent(NULL, size, &buf->addr, - GFP_KERNEL); - buf->bytes = size; - buf->private_data = NULL; - - if (!buf->area) - goto free; - } - snd_pcm_set_runtime_buffer(substream, buf); - ret = 1; - out: - runtime->dma_bytes = size; - return ret; - - free: - kfree(buf); - nomem: - return -ENOMEM; -} - -static int ux500_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct snd_soc_pcm_runtime *rtd = substream->private_data; - - dev_dbg(rtd->platform->dev, "%s: Enter\n", __func__); - - ux500_pcm_dma_hw_free(NULL, substream); - - return 0; + return snd_dmaengine_pcm_request_channel(stedma40_filter, dma_cfg); } -static int ux500_pcm_mmap(struct snd_pcm_substream *substream, - struct vm_area_struct *vma) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - - dev_dbg(rtd->platform->dev, "%s: Enter.\n", __func__); - - return dma_mmap_coherent(NULL, vma, runtime->dma_area, - runtime->dma_addr, runtime->dma_bytes); -} - -static struct snd_pcm_ops ux500_pcm_ops = { - .open = ux500_pcm_open, - .close = snd_dmaengine_pcm_close_release_chan, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = ux500_pcm_hw_params, - .hw_free = ux500_pcm_hw_free, - .trigger = snd_dmaengine_pcm_trigger, - .pointer = snd_dmaengine_pcm_pointer_no_residue, - .mmap = ux500_pcm_mmap -}; - -int ux500_pcm_new(struct snd_soc_pcm_runtime *rtd) -{ - struct snd_pcm *pcm = rtd->pcm; - - dev_dbg(rtd->platform->dev, "%s: Enter (id = '%s').\n", __func__, - pcm->id); - - pcm->info_flags = 0; - - return 0; -} - -static struct snd_soc_platform_driver ux500_pcm_soc_drv = { - .ops = &ux500_pcm_ops, - .pcm_new = ux500_pcm_new, +static const struct snd_dmaengine_pcm_config ux500_dmaengine_pcm_config = { + .pcm_hardware = &ux500_pcm_hw, + .compat_request_channel = ux500_pcm_request_chan, + .prealloc_buffer_size = 128 * 1024, }; int ux500_pcm_register_platform(struct platform_device *pdev) { int ret; - ret = snd_soc_register_platform(&pdev->dev, &ux500_pcm_soc_drv); + ret = snd_dmaengine_pcm_register(&pdev->dev, + &ux500_dmaengine_pcm_config, + SND_DMAENGINE_PCM_FLAG_NO_RESIDUE | + SND_DMAENGINE_PCM_FLAG_COMPAT | + SND_DMAENGINE_PCM_FLAG_NO_DT); if (ret < 0) { dev_err(&pdev->dev, "%s: ERROR: Failed to register platform '%s' (%d)!\n", @@ -255,8 +131,7 @@ EXPORT_SYMBOL_GPL(ux500_pcm_register_platform); int ux500_pcm_unregister_platform(struct platform_device *pdev) { - snd_soc_unregister_platform(&pdev->dev); - + snd_dmaengine_pcm_unregister(&pdev->dev); return 0; } EXPORT_SYMBOL_GPL(ux500_pcm_unregister_platform); -- cgit v1.1