From cb129820f1e6ccf309510f4eb28df45cb0742005 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 29 Mar 2012 09:45:58 -0700 Subject: percpu: use KERN_CONT in pcpu_dump_alloc_info() pcpu_dump_alloc_info() was printing continued lines without KERN_CONT. Use it. Signed-off-by: Tejun Heo Reported-by: Kay Sievers --- mm/percpu.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/mm/percpu.c b/mm/percpu.c index f47af91..f921fdf 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1132,20 +1132,20 @@ static void pcpu_dump_alloc_info(const char *lvl, for (alloc_end += gi->nr_units / upa; alloc < alloc_end; alloc++) { if (!(alloc % apl)) { - printk("\n"); + printk(KERN_CONT "\n"); printk("%spcpu-alloc: ", lvl); } - printk("[%0*d] ", group_width, group); + printk(KERN_CONT "[%0*d] ", group_width, group); for (unit_end += upa; unit < unit_end; unit++) if (gi->cpu_map[unit] != NR_CPUS) - printk("%0*d ", cpu_width, + printk(KERN_CONT "%0*d ", cpu_width, gi->cpu_map[unit]); else - printk("%s ", empty_str); + printk(KERN_CONT "%s ", empty_str); } } - printk("\n"); + printk(KERN_CONT "\n"); } /** -- cgit v1.1 From 2cee5715a926ad23d3f52ffd7da3ad38f54664dd Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Fri, 30 Mar 2012 15:26:57 +0200 Subject: HID: tivo: fix support for bluetooth version of tivo Slide The device is a bluetooth device, but one occurence by mistake had marked it as USB. Reported-by: Joshua Dillon Signed-off-by: Jiri Kosina --- drivers/hid/hid-tivo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/hid-tivo.c b/drivers/hid/hid-tivo.c index de47039..9f85f82 100644 --- a/drivers/hid/hid-tivo.c +++ b/drivers/hid/hid-tivo.c @@ -62,7 +62,7 @@ static int tivo_input_mapping(struct hid_device *hdev, struct hid_input *hi, static const struct hid_device_id tivo_devices[] = { /* TiVo Slide Bluetooth remote, pairs with a Broadcom dongle */ - { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) }, + { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) }, { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) }, { } }; -- cgit v1.1 From bf32fecdc1851ad9ca960f56771b798d17c26cf1 Mon Sep 17 00:00:00 2001 From: Jesse Gross Date: Mon, 2 Apr 2012 14:26:27 -0700 Subject: openvswitch: Add length check when retrieving TCP flags. When collecting TCP flags we check that the IP header indicates that a TCP header is present but not that the packet is actually long enough to contain the header. This adds a check to prevent reading off the end of the packet. In practice, this is only likely to result in reading of bad data and not a crash due to the presence of struct skb_shared_info at the end of the packet. Signed-off-by: Jesse Gross --- net/openvswitch/flow.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/openvswitch/flow.c b/net/openvswitch/flow.c index 1252c30..2a11ec2 100644 --- a/net/openvswitch/flow.c +++ b/net/openvswitch/flow.c @@ -183,7 +183,8 @@ void ovs_flow_used(struct sw_flow *flow, struct sk_buff *skb) u8 tcp_flags = 0; if (flow->key.eth.type == htons(ETH_P_IP) && - flow->key.ip.proto == IPPROTO_TCP) { + flow->key.ip.proto == IPPROTO_TCP && + likely(skb->len >= skb_transport_offset(skb) + sizeof(struct tcphdr))) { u8 *tcp = (u8 *)tcp_hdr(skb); tcp_flags = *(tcp + TCP_FLAGS_OFFSET) & TCP_FLAG_MASK; } -- cgit v1.1 From 25c3d30c918207556ae1d6e663150ebdf902186b Mon Sep 17 00:00:00 2001 From: Kent Yoder Date: Thu, 5 Apr 2012 20:34:20 +0800 Subject: crypto: sha512 - Fix byte counter overflow in SHA-512 The current code only increments the upper 64 bits of the SHA-512 byte counter when the number of bytes hashed happens to hit 2^64 exactly. This patch increments the upper 64 bits whenever the lower 64 bits overflows. Signed-off-by: Kent Yoder Cc: stable@kernel.org Signed-off-by: Herbert Xu --- crypto/sha512_generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/crypto/sha512_generic.c b/crypto/sha512_generic.c index 107f6f7..dd30f40 100644 --- a/crypto/sha512_generic.c +++ b/crypto/sha512_generic.c @@ -174,7 +174,7 @@ sha512_update(struct shash_desc *desc, const u8 *data, unsigned int len) index = sctx->count[0] & 0x7f; /* Update number of bytes */ - if (!(sctx->count[0] += len)) + if ((sctx->count[0] += len) < len) sctx->count[1]++; part_len = 128 - index; -- cgit v1.1 From 75258723dadd99a214f00bff34fa0fc6e7b6d463 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Micha=C5=82=20Wr=C3=B3bel?= Date: Thu, 5 Apr 2012 20:34:21 +0800 Subject: crypto: ixp4xx - include fix MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Before commit de47725421ad5627a5c905f4e40bb844ebc06d29 ("include: replace linux/module.h with "struct module" wherever possible") was implicitly included through -> . Signed-off-by: Michał Wróbel Signed-off-by: Herbert Xu --- drivers/crypto/ixp4xx_crypto.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c index 0053d7e..8f3f74c 100644 --- a/drivers/crypto/ixp4xx_crypto.c +++ b/drivers/crypto/ixp4xx_crypto.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include -- cgit v1.1 From 511d63cb19329235bc9298b64010ec494b5e1408 Mon Sep 17 00:00:00 2001 From: Horia Geanta Date: Fri, 30 Mar 2012 17:49:53 +0300 Subject: crypto: talitos - properly lock access to global talitos registers Access to global talitos registers must be protected for the case when affinities are configured such that primary and secondary talitos irqs run on different cpus. Signed-off-by: Horia Geanta Signed-off-by: Kim Phillips Signed-off-by: Herbert Xu --- drivers/crypto/talitos.c | 20 +++++++++++++++++--- 1 file changed, 17 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c index dc641c7..921039e 100644 --- a/drivers/crypto/talitos.c +++ b/drivers/crypto/talitos.c @@ -124,6 +124,9 @@ struct talitos_private { void __iomem *reg; int irq[2]; + /* SEC global registers lock */ + spinlock_t reg_lock ____cacheline_aligned; + /* SEC version geometry (from device tree node) */ unsigned int num_channels; unsigned int chfifo_len; @@ -412,6 +415,7 @@ static void talitos_done_##name(unsigned long data) \ { \ struct device *dev = (struct device *)data; \ struct talitos_private *priv = dev_get_drvdata(dev); \ + unsigned long flags; \ \ if (ch_done_mask & 1) \ flush_channel(dev, 0, 0, 0); \ @@ -427,8 +431,10 @@ static void talitos_done_##name(unsigned long data) \ out: \ /* At this point, all completed channels have been processed */ \ /* Unmask done interrupts for channels completed later on. */ \ + spin_lock_irqsave(&priv->reg_lock, flags); \ setbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ setbits32(priv->reg + TALITOS_IMR_LO, TALITOS_IMR_LO_INIT); \ + spin_unlock_irqrestore(&priv->reg_lock, flags); \ } DEF_TALITOS_DONE(4ch, TALITOS_ISR_4CHDONE) DEF_TALITOS_DONE(ch0_2, TALITOS_ISR_CH_0_2_DONE) @@ -619,22 +625,28 @@ static irqreturn_t talitos_interrupt_##name(int irq, void *data) \ struct device *dev = data; \ struct talitos_private *priv = dev_get_drvdata(dev); \ u32 isr, isr_lo; \ + unsigned long flags; \ \ + spin_lock_irqsave(&priv->reg_lock, flags); \ isr = in_be32(priv->reg + TALITOS_ISR); \ isr_lo = in_be32(priv->reg + TALITOS_ISR_LO); \ /* Acknowledge interrupt */ \ out_be32(priv->reg + TALITOS_ICR, isr & (ch_done_mask | ch_err_mask)); \ out_be32(priv->reg + TALITOS_ICR_LO, isr_lo); \ \ - if (unlikely((isr & ~TALITOS_ISR_4CHDONE) & ch_err_mask || isr_lo)) \ - talitos_error(dev, isr, isr_lo); \ - else \ + if (unlikely(isr & ch_err_mask || isr_lo)) { \ + spin_unlock_irqrestore(&priv->reg_lock, flags); \ + talitos_error(dev, isr & ch_err_mask, isr_lo); \ + } \ + else { \ if (likely(isr & ch_done_mask)) { \ /* mask further done interrupts. */ \ clrbits32(priv->reg + TALITOS_IMR, ch_done_mask); \ /* done_task will unmask done interrupts at exit */ \ tasklet_schedule(&priv->done_task[tlet]); \ } \ + spin_unlock_irqrestore(&priv->reg_lock, flags); \ + } \ \ return (isr & (ch_done_mask | ch_err_mask) || isr_lo) ? IRQ_HANDLED : \ IRQ_NONE; \ @@ -2719,6 +2731,8 @@ static int talitos_probe(struct platform_device *ofdev) priv->ofdev = ofdev; + spin_lock_init(&priv->reg_lock); + err = talitos_probe_irq(ofdev); if (err) goto err_out; -- cgit v1.1 From 9a637e19213496b756662155ef26394e189b320a Mon Sep 17 00:00:00 2001 From: Aaro Koskinen Date: Sun, 8 Apr 2012 23:23:30 +0300 Subject: ARM: OMAP1: mux: add missing include Fix the following build breakage in v3.4-rc2 that happens with CONFIG_OMAP_MUX=y: arch/arm/mach-omap1/mux.c:89:1: error: 'FUNC_MUX_CTRL_9' undeclared here (not in a function) arch/arm/mach-omap1/mux.c:89:1: error: 'PULL_DWN_CTRL_2' undeclared here (not in a function) arch/arm/mach-omap1/mux.c:93:1: error: 'FUNC_MUX_CTRL_C' undeclared here (not in a function) Signed-off-by: Aaro Koskinen Acked-by: Jarkko Nikula [tony@atomide.com: updated comments] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/mux.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c index 087dba0..e9cc52d 100644 --- a/arch/arm/mach-omap1/mux.c +++ b/arch/arm/mach-omap1/mux.c @@ -27,6 +27,7 @@ #include #include +#include #include -- cgit v1.1 From 6d258a4c42089229b855fd706622029decf316d6 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 15 Mar 2012 16:37:18 +0200 Subject: usb: gadget: udc-core: stop UDC on device-initiated disconnect When we want to do device-initiated disconnect, let's make sure we stop the UDC in order to e.g. allow lower power states to be achieved by turning off unnecessary clocks and/or stoping PHYs. When reconnecting, call ->udc_start() again to make sure UDC is reinitialized. Cc: stable@vger.kernel.org Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 56da49f..c261887 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -411,8 +411,12 @@ static ssize_t usb_udc_softconn_store(struct device *dev, struct usb_udc *udc = container_of(dev, struct usb_udc, dev); if (sysfs_streq(buf, "connect")) { + if (udc_is_newstyle(udc)) + usb_gadget_udc_start(udc->gadget, udc->driver); usb_gadget_connect(udc->gadget); } else if (sysfs_streq(buf, "disconnect")) { + if (udc_is_newstyle(udc)) + usb_gadget_udc_stop(udc->gadget, udc->driver); usb_gadget_disconnect(udc->gadget); } else { dev_err(dev, "unsupported command '%s'\n", buf); -- cgit v1.1 From 566ccdda07dc5898272b6fbad9c616fc44be305a Mon Sep 17 00:00:00 2001 From: Moiz Sonasath Date: Wed, 14 Mar 2012 00:44:56 -0500 Subject: usb: dwc3: ep0: Handle requests greater than wMaxPacketSize To allow ep0 out transfers of upto bounce buffer size instead of maxpacketsize, use the transfer size as multiple of ep0 maxpacket size. Cc: stable@vger.kernel.org Signed-off-by: Moiz Sonasath Signed-off-by: Partha Basak Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 25910e2..a40d3bb 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -559,8 +559,12 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, length = trb->size & DWC3_TRB_SIZE_MASK; if (dwc->ep0_bounced) { + unsigned transfer_size = ur->length; + unsigned maxp = ep0->endpoint.maxpacket; + + transfer_size += (maxp - (transfer_size % maxp)); transferred = min_t(u32, ur->length, - ep0->endpoint.maxpacket - length); + transfer_size - length); memcpy(ur->buf, dwc->ep0_bounce, transferred); dwc->ep0_bounced = false; } else { -- cgit v1.1 From cd423dd3634a5232a3019eb372b144619a61cd16 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 21 Mar 2012 11:44:00 +0200 Subject: usb: dwc3: ep0: increment "actual" on bounced ep0 case due to a HW limitation we have a bounce buffer for ep0 out transfers which are not aligned with MaxPacketSize. On such case we were not increment r->actual as we should. This patch fixes that mistake. Cc: stable@vger.kernel.org Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index a40d3bb..da43131 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -569,9 +569,10 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, dwc->ep0_bounced = false; } else { transferred = ur->length - length; - ur->actual += transferred; } + ur->actual += transferred; + if ((epnum & 1) && ur->actual < ur->length) { /* for some reason we did not get everything out */ -- cgit v1.1 From ecb07797ffc1c2aaa2e58d1ba1b5deea44ea5b9e Mon Sep 17 00:00:00 2001 From: Gerard Cauvy Date: Fri, 16 Mar 2012 16:20:10 +0200 Subject: usb: dwc3: ep0: add a default case for SetFeature command Without this default case returning an error, thus replying with a stall, we would fail USB30CV TD 9.11 Bad Feature test case. Cc: stable@vger.kernel.org Signed-off-by: Gerard Cauvy Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index da43131..3584a16 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -353,6 +353,9 @@ static int dwc3_ep0_handle_feature(struct dwc3 *dwc, dwc->test_mode_nr = wIndex >> 8; dwc->test_mode = true; + break; + default: + return -EINVAL; } break; -- cgit v1.1 From afb76df140823c57738598a876cd1d6568cd57c7 Mon Sep 17 00:00:00 2001 From: Vladimir Zapolskiy Date: Fri, 23 Dec 2011 18:37:18 +0200 Subject: usb: musb: fix oops on omap2430 module unload This change prevents runtime suspend and resume actual execution, if omap2430 controller driver is loaded after musb-hdrc, and therefore the controller isn't initialized properly. The problem is reproducible with 3.1.y and 3.2 kernels. Kernel configuration of musb: % cat .config | egrep 'MUSB|GADGET' CONFIG_USB_MUSB_HDRC=y # CONFIG_USB_MUSB_TUSB6010 is not set CONFIG_USB_MUSB_OMAP2PLUS=m # CONFIG_USB_MUSB_AM35X is not set CONFIG_MUSB_PIO_ONLY=y CONFIG_USB_GADGET=y # CONFIG_USB_GADGET_DEBUG is not set # CONFIG_USB_GADGET_DEBUG_FILES is not set # CONFIG_USB_GADGET_DEBUG_FS is not set CONFIG_USB_GADGET_VBUS_DRAW=2 CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2 CONFIG_USB_GADGET_MUSB_HDRC=m CONFIG_USB_GADGET_DUALSPEED=y CONFIG_USB_GADGETFS=m # CONFIG_USB_MIDI_GADGET is not set Fixes the following oops on module unloading: Unable to handle kernel NULL pointer dereference at virtual address 00000220 ----8<---- [] (omap2430_runtime_resume+0x24/0x54 [omap2430]) from [] (pm_generic_runtime_resume+0x3c/0x50) [] (pm_generic_runtime_resume+0x3c/0x50) from [] (_od_runtime_resume+0x28/0x2c) [] (_od_runtime_resume+0x28/0x2c) from [] (__rpm_callback+0x60/0xa0) [] (__rpm_callback+0x60/0xa0) from [] (rpm_resume+0x3fc/0x6e4) [] (rpm_resume+0x3fc/0x6e4) from [] (__pm_runtime_resume+0x5c/0x90) [] (__pm_runtime_resume+0x5c/0x90) from [] (__device_release_driver+0x2c/0xd0) [] (__device_release_driver+0x2c/0xd0) from [] (driver_detach+0xe8/0xf4) [] (driver_detach+0xe8/0xf4) from [] (bus_remove_driver+0xa0/0x104) [] (bus_remove_driver+0xa0/0x104) from [] (driver_unregister+0x60/0x80) [] (driver_unregister+0x60/0x80) from [] (platform_driver_unregister+0x1c/0x20) [] (platform_driver_unregister+0x1c/0x20) from [] (omap2430_exit+0x14/0x1c [omap2430]) [] (omap2430_exit+0x14/0x1c [omap2430]) from [] (sys_delete_module+0x1f4/0x264) [] (sys_delete_module+0x1f4/0x264) from [] (ret_fast_syscall+0x0/0x30) Signed-off-by: Vladimir Zapolskiy Cc: Greg Kroah-Hartman Cc: stable@vger.kernel.org # 3.1 Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 20 ++++++++++++-------- 1 file changed, 12 insertions(+), 8 deletions(-) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 2ae0bb3..11b571e 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -491,11 +491,13 @@ static int omap2430_runtime_suspend(struct device *dev) struct omap2430_glue *glue = dev_get_drvdata(dev); struct musb *musb = glue_to_musb(glue); - musb->context.otg_interfsel = musb_readl(musb->mregs, - OTG_INTERFSEL); + if (musb) { + musb->context.otg_interfsel = musb_readl(musb->mregs, + OTG_INTERFSEL); - omap2430_low_level_exit(musb); - usb_phy_set_suspend(musb->xceiv, 1); + omap2430_low_level_exit(musb); + usb_phy_set_suspend(musb->xceiv, 1); + } return 0; } @@ -505,11 +507,13 @@ static int omap2430_runtime_resume(struct device *dev) struct omap2430_glue *glue = dev_get_drvdata(dev); struct musb *musb = glue_to_musb(glue); - omap2430_low_level_init(musb); - musb_writel(musb->mregs, OTG_INTERFSEL, - musb->context.otg_interfsel); + if (musb) { + omap2430_low_level_init(musb); + musb_writel(musb->mregs, OTG_INTERFSEL, + musb->context.otg_interfsel); - usb_phy_set_suspend(musb->xceiv, 0); + usb_phy_set_suspend(musb->xceiv, 0); + } return 0; } -- cgit v1.1 From c04352a590538123f8c93bd87ef1d4bb9e3a64c7 Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Sat, 4 Feb 2012 19:43:51 +0200 Subject: usb: musb: fix some runtime_pm issues When runtime_pm was originally added, it was done in rather confusing way: omap2430_musb_init() (called from musb_init_controller) would do runtime_pm_get_sync() and musb_init_controller() itself would do runtime_pm_put to balance it out. This is not only confusing but also wrong if non-omap2430 glue layer is used. This confusion resulted in commit 772aed45b604 "usb: musb: fix pm_runtime mismatch", that removed runtime_pm_put() from musb_init_controller as that looked unbalanced, and also happened to fix unrelated isp1704_charger crash. However this broke runtime PM functionality (musb is now always powered, even without gadget active). Avoid these confusing runtime pm dependences by making musb_init_controller() and omap2430_musb_init() do their own runtime get/put pairs; also cover error paths. Remove unneeded runtime_pm_put in omap2430_remove too. isp1704_charger crash that motivated 772aed45b604 will be fixed by following patch. Cc: Felipe Contreras Signed-off-by: Grazvydas Ignotas Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.c | 9 ++++++++- drivers/usb/musb/omap2430.c | 2 +- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 0f8b829..2392146 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -1904,7 +1904,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) if (!musb->isr) { status = -ENODEV; - goto fail3; + goto fail2; } if (!musb->xceiv->io_ops) { @@ -1912,6 +1912,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) musb->xceiv->io_ops = &musb_ulpi_access; } + pm_runtime_get_sync(musb->controller); + #ifndef CONFIG_MUSB_PIO_ONLY if (use_dma && dev->dma_mask) { struct dma_controller *c; @@ -2023,6 +2025,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) goto fail5; #endif + pm_runtime_put(musb->controller); + dev_info(dev, "USB %s mode controller at %p using %s, IRQ %d\n", ({char *s; switch (musb->board_mode) { @@ -2047,6 +2051,9 @@ fail4: musb_gadget_cleanup(musb); fail3: + pm_runtime_put_sync(musb->controller); + +fail2: if (musb->irq_wake) device_init_wakeup(dev, 0); musb_platform_exit(musb); diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 11b571e..3dfd122 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -333,6 +333,7 @@ static int omap2430_musb_init(struct musb *musb) setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb); + pm_runtime_put_noidle(musb->controller); return 0; err1: @@ -478,7 +479,6 @@ static int __devexit omap2430_remove(struct platform_device *pdev) platform_device_del(glue->musb); platform_device_put(glue->musb); - pm_runtime_put(&pdev->dev); kfree(glue); return 0; -- cgit v1.1 From f79a60b8785409f5a77767780315ce6d3ea04a44 Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 29 Feb 2012 20:19:46 +0800 Subject: usb: fsl_udc_core: prime status stage once data stage has primed - For Control Read transfer, the ACK handshake on an IN transaction may be corrupted, so the device may not receive the ACK for data stage, the complete irq will not occur at this situation. Therefore, we need to move prime status stage from complete irq routine to the place where the data stage has just primed, or the host will never get ACK for status stage. The above issue has been described at USB2.0 spec chapter 8.5.3.3. - After adding prime status stage just after prime the data stage, there is a potential problem when the status dTD is added before the data stage has primed by hardware. The reason is the device's dTD descriptor has NO direction bit, if data stage (IN) prime hasn't finished, the status stage(OUT) dTD will be added at data stage dTD's Next dTD Pointer, so when the data stage transfer has finished, the status dTD will be primed as IN by hardware, then the host will never receive ACK from the device side for status stage. - Delete below code at fsl_ep_queue: /* Update ep0 state */ if ((ep_index(ep) == 0)) udc->ep0_state = DATA_STATE_XMIT; the udc->ep0_state will be updated again after udc->driver->setup finishes. It is tested at i.mx51 bbg board with g_mass_storage, g_ether, g_serial. Signed-off-by: Peter Chen Signed-off-by: Felipe Balbi --- drivers/usb/gadget/fsl_udc_core.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index 5f94e79..55abfb6 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -730,7 +730,7 @@ static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req) : (1 << (ep_index(ep))); /* check if the pipe is empty */ - if (!(list_empty(&ep->queue))) { + if (!(list_empty(&ep->queue)) && !(ep_index(ep) == 0)) { /* Add td to the end */ struct fsl_req *lastreq; lastreq = list_entry(ep->queue.prev, struct fsl_req, queue); @@ -918,10 +918,6 @@ fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) return -ENOMEM; } - /* Update ep0 state */ - if ((ep_index(ep) == 0)) - udc->ep0_state = DATA_STATE_XMIT; - /* irq handler advances the queue */ if (req != NULL) list_add_tail(&req->queue, &ep->queue); @@ -1279,7 +1275,8 @@ static int ep0_prime_status(struct fsl_udc *udc, int direction) udc->ep0_dir = USB_DIR_OUT; ep = &udc->eps[0]; - udc->ep0_state = WAIT_FOR_OUT_STATUS; + if (udc->ep0_state != DATA_STATE_XMIT) + udc->ep0_state = WAIT_FOR_OUT_STATUS; req->ep = ep; req->req.length = 0; @@ -1384,6 +1381,9 @@ static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value, list_add_tail(&req->queue, &ep->queue); udc->ep0_state = DATA_STATE_XMIT; + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + return; stall: ep0stall(udc); @@ -1492,6 +1492,14 @@ static void setup_received_irq(struct fsl_udc *udc, spin_lock(&udc->lock); udc->ep0_state = (setup->bRequestType & USB_DIR_IN) ? DATA_STATE_XMIT : DATA_STATE_RECV; + /* + * If the data stage is IN, send status prime immediately. + * See 2.0 Spec chapter 8.5.3.3 for detail. + */ + if (udc->ep0_state == DATA_STATE_XMIT) + if (ep0_prime_status(udc, EP_DIR_OUT)) + ep0stall(udc); + } else { /* No data phase, IN status from gadget */ udc->ep0_dir = USB_DIR_IN; @@ -1520,9 +1528,8 @@ static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0, switch (udc->ep0_state) { case DATA_STATE_XMIT: - /* receive status phase */ - if (ep0_prime_status(udc, EP_DIR_OUT)) - ep0stall(udc); + /* already primed at setup_received_irq */ + udc->ep0_state = WAIT_FOR_OUT_STATUS; break; case DATA_STATE_RECV: /* send status phase */ -- cgit v1.1 From f7a83fe19336125d7eb26488788dc66c03f2c08e Mon Sep 17 00:00:00 2001 From: Anton Tikhomirov Date: Tue, 6 Mar 2012 14:05:49 +0900 Subject: usb: s3c-hsotg: Fix TX FIFOs allocation According to documentation, TX FIFO_number index starts from 1. For IN endpoint FIFO 0 we use GNPTXFSIZ register for programming the size and memory start address. Signed-off-by: Anton Tikhomirov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 69295ba..e3fe5fd 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -340,7 +340,7 @@ static void s3c_hsotg_init_fifo(struct s3c_hsotg *hsotg) /* currently we allocate TX FIFOs for all possible endpoints, * and assume that they are all the same size. */ - for (ep = 0; ep <= 15; ep++) { + for (ep = 1; ep <= 15; ep++) { val = addr; val |= size << S3C_DPTXFSIZn_DPTxFSize_SHIFT; addr += size; -- cgit v1.1 From 659ad60cb9128345d0a6b9093dda9b0e366b7937 Mon Sep 17 00:00:00 2001 From: Anton Tikhomirov Date: Tue, 6 Mar 2012 14:07:29 +0900 Subject: usb: s3c-hsotg: Fix maximum patcket size setting for EP0 MPS field of DOEPCTL0 is read only. Signed-off-by: Anton Tikhomirov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index e3fe5fd..03de169 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -1696,10 +1696,12 @@ static void s3c_hsotg_set_ep_maxpacket(struct s3c_hsotg *hsotg, reg |= mpsval; writel(reg, regs + S3C_DIEPCTL(ep)); - reg = readl(regs + S3C_DOEPCTL(ep)); - reg &= ~S3C_DxEPCTL_MPS_MASK; - reg |= mpsval; - writel(reg, regs + S3C_DOEPCTL(ep)); + if (ep) { + reg = readl(regs + S3C_DOEPCTL(ep)); + reg &= ~S3C_DxEPCTL_MPS_MASK; + reg |= mpsval; + writel(reg, regs + S3C_DOEPCTL(ep)); + } return; -- cgit v1.1 From 70fa030ffb652ace81dd5bcab01255b49723caec Mon Sep 17 00:00:00 2001 From: Anton Tikhomirov Date: Tue, 6 Mar 2012 14:08:29 +0900 Subject: usb: s3c-hsotg: Avoid TxFIFO corruption in DMA mode Writing to TxFIFO relates only to Slave mode and leads to TxFIFO corruption in DMA mode. Signed-off-by: Anton Tikhomirov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 03de169..8db2366 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -1921,7 +1921,8 @@ static void s3c_hsotg_epint(struct s3c_hsotg *hsotg, unsigned int idx, ints & S3C_DIEPMSK_TxFIFOEmpty) { dev_dbg(hsotg->dev, "%s: ep%d: TxFIFOEmpty\n", __func__, idx); - s3c_hsotg_trytx(hsotg, hs_ep); + if (!using_dma(hsotg)) + s3c_hsotg_trytx(hsotg, hs_ep); } } } -- cgit v1.1 From db1d8ba36551bf55222c7961d9e9a1195a612fde Mon Sep 17 00:00:00 2001 From: Anton Tikhomirov Date: Tue, 6 Mar 2012 14:09:19 +0900 Subject: usb: s3c-hsotg: Fix big buffers transfer in DMA mode DMA address register shouldn't be updated manually if transfer size requires multiple packets. Signed-off-by: Anton Tikhomirov Signed-off-by: Felipe Balbi --- drivers/usb/gadget/s3c-hsotg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 8db2366..105b206 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -741,7 +741,7 @@ static void s3c_hsotg_start_req(struct s3c_hsotg *hsotg, /* write size / packets */ writel(epsize, hsotg->regs + epsize_reg); - if (using_dma(hsotg)) { + if (using_dma(hsotg) && !continuing) { unsigned int dma_reg; /* write DMA address to control register, buffer already -- cgit v1.1 From 64b6c8a7019acc38cc6b37f8e72c1e915593b1bb Mon Sep 17 00:00:00 2001 From: Anton Tikhomirov Date: Tue, 6 Mar 2012 17:05:15 +0900 Subject: usb: dwc3: Free event buffers array Array should be freed together with event buffers, since it was allocated dynamically. Signed-off-by: Anton Tikhomirov Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 7bd815a..99b58d84 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -206,11 +206,11 @@ static void dwc3_free_event_buffers(struct dwc3 *dwc) for (i = 0; i < dwc->num_event_buffers; i++) { evt = dwc->ev_buffs[i]; - if (evt) { + if (evt) dwc3_free_one_event_buffer(dwc, evt); - dwc->ev_buffs[i] = NULL; - } } + + kfree(dwc->ev_buffs); } /** -- cgit v1.1 From e2190a97c6d493eef1f180b9dadfd5ffd4706051 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Mon, 12 Mar 2012 12:55:41 +0100 Subject: usb: gadget: FunctionFS: clear FFS_FL_BOUND flag on unbind (bugfix) clear FFS_FL_BOUND flag on unbind (bugfix) Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Acked-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 1cbba70..d187ae7 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -1382,6 +1382,7 @@ static void functionfs_unbind(struct ffs_data *ffs) ffs->ep0req = NULL; ffs->gadget = NULL; ffs_data_put(ffs); + clear_bit(FFS_FL_BOUND, &ffs->flags); } } -- cgit v1.1 From 8545e6031a719675da9f3d21f1c8ce143dac7fe5 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Mon, 12 Mar 2012 12:55:42 +0100 Subject: usb: gadget: FunctionFS: make module init & exit __init & __exit make module init & exit __init & __exit Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Acked-by: Michal Nazarewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/g_ffs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/g_ffs.c b/drivers/usb/gadget/g_ffs.c index 331cd67..a85eaf4 100644 --- a/drivers/usb/gadget/g_ffs.c +++ b/drivers/usb/gadget/g_ffs.c @@ -161,7 +161,7 @@ static struct usb_composite_driver gfs_driver = { static struct ffs_data *gfs_ffs_data; static unsigned long gfs_registered; -static int gfs_init(void) +static int __init gfs_init(void) { ENTER(); @@ -169,7 +169,7 @@ static int gfs_init(void) } module_init(gfs_init); -static void gfs_exit(void) +static void __exit gfs_exit(void) { ENTER(); -- cgit v1.1 From 692933b2ccfce02400dc8360a97acde2846e8541 Mon Sep 17 00:00:00 2001 From: Ajay Kumar Gupta Date: Wed, 14 Mar 2012 17:33:35 +0530 Subject: usb: musb: fix bug in musb_cleanup_urb Control transfers with data expected from device to host will use usb_rcvctrlpipe() for urb->pipe so for such urbs 'is_in' will be set causing control urb to fall into the first "if" condition in musb_cleanup_urb(). Fixed by adding logic to check for non control endpoints. Signed-off-by: Ajay Kumar Gupta Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 79cb0af..ef8d744 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -2098,7 +2098,7 @@ static int musb_cleanup_urb(struct urb *urb, struct musb_qh *qh) } /* turn off DMA requests, discard state, stop polling ... */ - if (is_in) { + if (ep->epnum && is_in) { /* giveback saves bulk toggle */ csr = musb_h_flush_rxfifo(ep, 0); -- cgit v1.1 From bf070bc14178f1458e7eccd76316ac24f76f1890 Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Wed, 21 Mar 2012 16:35:52 +0200 Subject: usb: musb: wake the device before ulpi transfers musb can be suspended at the time some other driver wants to do ulpi transfers using usb_phy_io_* functions, and that can cause data abort, as it happened with isp1704_charger: http://article.gmane.org/gmane.linux.kernel/1226122 Add pm_runtime to ulpi functions to rectify this. This also adds io_dev to usb_phy so that pm_runtime_* functions can be used. Cc: Felipe Contreras Signed-off-by: Grazvydas Ignotas Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.c | 31 +++++++++++++++++++++++++------ include/linux/usb/otg.h | 1 + 2 files changed, 26 insertions(+), 6 deletions(-) diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 2392146..66aaccf 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -137,6 +137,9 @@ static int musb_ulpi_read(struct usb_phy *phy, u32 offset) int i = 0; u8 r; u8 power; + int ret; + + pm_runtime_get_sync(phy->io_dev); /* Make sure the transceiver is not in low power mode */ power = musb_readb(addr, MUSB_POWER); @@ -154,15 +157,22 @@ static int musb_ulpi_read(struct usb_phy *phy, u32 offset) while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL) & MUSB_ULPI_REG_CMPLT)) { i++; - if (i == 10000) - return -ETIMEDOUT; + if (i == 10000) { + ret = -ETIMEDOUT; + goto out; + } } r = musb_readb(addr, MUSB_ULPI_REG_CONTROL); r &= ~MUSB_ULPI_REG_CMPLT; musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r); - return musb_readb(addr, MUSB_ULPI_REG_DATA); + ret = musb_readb(addr, MUSB_ULPI_REG_DATA); + +out: + pm_runtime_put(phy->io_dev); + + return ret; } static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data) @@ -171,6 +181,9 @@ static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data) int i = 0; u8 r = 0; u8 power; + int ret = 0; + + pm_runtime_get_sync(phy->io_dev); /* Make sure the transceiver is not in low power mode */ power = musb_readb(addr, MUSB_POWER); @@ -184,15 +197,20 @@ static int musb_ulpi_write(struct usb_phy *phy, u32 offset, u32 data) while (!(musb_readb(addr, MUSB_ULPI_REG_CONTROL) & MUSB_ULPI_REG_CMPLT)) { i++; - if (i == 10000) - return -ETIMEDOUT; + if (i == 10000) { + ret = -ETIMEDOUT; + goto out; + } } r = musb_readb(addr, MUSB_ULPI_REG_CONTROL); r &= ~MUSB_ULPI_REG_CMPLT; musb_writeb(addr, MUSB_ULPI_REG_CONTROL, r); - return 0; +out: + pm_runtime_put(phy->io_dev); + + return ret; } #else #define musb_ulpi_read NULL @@ -1908,6 +1926,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) } if (!musb->xceiv->io_ops) { + musb->xceiv->io_dev = musb->controller; musb->xceiv->io_priv = musb->mregs; musb->xceiv->io_ops = &musb_ulpi_access; } diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h index f67810f..38ab3f4 100644 --- a/include/linux/usb/otg.h +++ b/include/linux/usb/otg.h @@ -94,6 +94,7 @@ struct usb_phy { struct usb_otg *otg; + struct device *io_dev; struct usb_phy_io_ops *io_ops; void __iomem *io_priv; -- cgit v1.1 From 3006dc8c627d738693e910c159630e4368c9e86c Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Wed, 21 Mar 2012 21:30:20 +0530 Subject: usb: musb: omap: fix crash when musb glue (omap) gets initialized pm_runtime_enable is being called after omap2430_musb_init. Hence pm_runtime_get_sync in omap2430_musb_init does not have any effect (does not enable clocks) resulting in a crash during register access. It is fixed here. Cc: stable@vger.kernel.org # v3.0, v3.1, v3.2, v3.3 Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 3dfd122..0fb4ce8 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -453,14 +453,14 @@ static int __devinit omap2430_probe(struct platform_device *pdev) goto err2; } + pm_runtime_enable(&pdev->dev); + ret = platform_device_add(musb); if (ret) { dev_err(&pdev->dev, "failed to register musb device\n"); goto err2; } - pm_runtime_enable(&pdev->dev); - return 0; err2: -- cgit v1.1 From 8ae8090c82eb407267001f75b3d256b3bd4ae691 Mon Sep 17 00:00:00 2001 From: Kishon Vijay Abraham I Date: Wed, 21 Mar 2012 21:34:30 +0530 Subject: usb: gadget: udc-core: fix asymmetric calls in remove_driver During modprobe of gadget driver, pullup is called after udc_start. In order to make the exit path symmetric when removing a gadget driver, call pullup before ->udc_stop. This is needed to avoid issues with PM where udc_stop disables the module completely (put IP in reset state, cut functional and interface clocks, and so on), which prevents us from accessing the IP's address space, thus creating the possibility of an abort exception when we try to access IP's address space after clocks are off. Cc: stable@vger.kernel.org Signed-off-by: Partha Basak Signed-off-by: Kishon Vijay Abraham I Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index c261887..2fa9865 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -264,8 +264,8 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) if (udc_is_newstyle(udc)) { udc->driver->disconnect(udc->gadget); udc->driver->unbind(udc->gadget); - usb_gadget_udc_stop(udc->gadget, udc->driver); usb_gadget_disconnect(udc->gadget); + usb_gadget_udc_stop(udc->gadget, udc->driver); } else { usb_gadget_stop(udc->gadget, udc->driver); } -- cgit v1.1 From ad579699c4f0274bf522a9252ff9b20c72197e48 Mon Sep 17 00:00:00 2001 From: Shubhrajyoti D Date: Thu, 22 Mar 2012 12:48:06 +0530 Subject: usb: musb: omap: fix the error check for pm_runtime_get_sync pm_runtime_get_sync returns a signed integer. In case of errors it returns a negative value. This patch fixes the error check by making it signed instead of unsigned thus preventing register access if get_sync_fails. Also passes the error cause to the debug message. Cc: stable@vger.kernel.org Cc: Kishon Vijay Abraham I Signed-off-by: Shubhrajyoti D Signed-off-by: Felipe Balbi --- drivers/usb/musb/omap2430.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c index 0fb4ce8..c7785e8 100644 --- a/drivers/usb/musb/omap2430.c +++ b/drivers/usb/musb/omap2430.c @@ -282,7 +282,8 @@ static void musb_otg_notifier_work(struct work_struct *data_notifier_work) static int omap2430_musb_init(struct musb *musb) { - u32 l, status = 0; + u32 l; + int status = 0; struct device *dev = musb->controller; struct musb_hdrc_platform_data *plat = dev->platform_data; struct omap_musb_board_data *data = plat->board_data; @@ -301,7 +302,7 @@ static int omap2430_musb_init(struct musb *musb) status = pm_runtime_get_sync(dev); if (status < 0) { - dev_err(dev, "pm_runtime_get_sync FAILED"); + dev_err(dev, "pm_runtime_get_sync FAILED %d\n", status); goto err1; } -- cgit v1.1 From f135617224b4a1113b26b8ee5877e94f38e40d1e Mon Sep 17 00:00:00 2001 From: Lukasz Majewski Date: Fri, 10 Feb 2012 09:54:51 +0100 Subject: usb: gadget: rndis: fix Missing req->context assignment It is crucial to assign each req->context value to struct rndis. The problem happens for multi function gadget (g_multi) when multiple functions are calling common usb_composite_dev control request. It might happen that *_setup method from one usb function will alter some fields of this common request issued by other USB function. Signed-off-by: Lukasz Majewski Signed-off-by: Kyungmin Park Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_rndis.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c index 7b1cf18..5234365 100644 --- a/drivers/usb/gadget/f_rndis.c +++ b/drivers/usb/gadget/f_rndis.c @@ -500,6 +500,7 @@ rndis_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) if (buf) { memcpy(req->buf, buf, n); req->complete = rndis_response_complete; + req->context = rndis; rndis_free_response(rndis->config, buf); value = n; } -- cgit v1.1 From 6190c79df861d2c78a7448fe6d4260e5fa53b9b9 Mon Sep 17 00:00:00 2001 From: Bhupesh Sharma Date: Fri, 23 Mar 2012 22:23:13 +0530 Subject: usb: gadget: uvc: Remove non-required locking from 'uvc_queue_next_buffer' routine This patch removes the non-required spinlock acquire/release calls on 'queue->irqlock' from 'uvc_queue_next_buffer' routine. This routine is called from 'video->encode' function (which translates to either 'uvc_video_encode_bulk' or 'uvc_video_encode_isoc') in 'uvc_video.c'. As, the 'video->encode' routines are called with 'queue->irqlock' already held, so acquiring a 'queue->irqlock' again in 'uvc_queue_next_buffer' routine causes a spin lock recursion. Signed-off-by: Bhupesh Sharma Acked-by: Laurent Pinchart Signed-off-by: Felipe Balbi --- drivers/usb/gadget/uvc_queue.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c index d776adb..0cdf89d 100644 --- a/drivers/usb/gadget/uvc_queue.c +++ b/drivers/usb/gadget/uvc_queue.c @@ -543,11 +543,11 @@ done: return ret; } +/* called with queue->irqlock held.. */ static struct uvc_buffer * uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf) { struct uvc_buffer *nextbuf; - unsigned long flags; if ((queue->flags & UVC_QUEUE_DROP_INCOMPLETE) && buf->buf.length != buf->buf.bytesused) { @@ -556,14 +556,12 @@ uvc_queue_next_buffer(struct uvc_video_queue *queue, struct uvc_buffer *buf) return buf; } - spin_lock_irqsave(&queue->irqlock, flags); list_del(&buf->queue); if (!list_empty(&queue->irqqueue)) nextbuf = list_first_entry(&queue->irqqueue, struct uvc_buffer, queue); else nextbuf = NULL; - spin_unlock_irqrestore(&queue->irqlock, flags); buf->buf.sequence = queue->sequence++; do_gettimeofday(&buf->buf.timestamp); -- cgit v1.1 From 92b0abf80c5c5f0e0d71d1309688a330fd74731b Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Wed, 28 Mar 2012 09:30:50 +0200 Subject: usb: gadget: eliminate NULL pointer dereference (bugfix) usb: gadget: eliminate NULL pointer dereference (bugfix) This patch fixes a bug which causes NULL pointer dereference in ffs_ep0_ioctl. The bug happens when the FunctionFS is not bound (either has not been bound yet or has been bound and then unbound) and can be reproduced with running the following commands: $ insmod g_ffs.ko $ mount -t functionfs func /dev/usbgadget $ ./null where null.c is: #include #include int main(void) { int fd = open("/dev/usbgadget/ep0", O_RDWR); ioctl(fd, FUNCTIONFS_CLEAR_HALT); return 0; } Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Kyungmin Park Cc: stable@vger.kernel.org Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index d187ae7..f52cb1a 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -712,7 +712,7 @@ static long ffs_ep0_ioctl(struct file *file, unsigned code, unsigned long value) if (code == FUNCTIONFS_INTERFACE_REVMAP) { struct ffs_function *func = ffs->func; ret = func ? ffs_func_revmap_intf(func, value) : -ENODEV; - } else if (gadget->ops->ioctl) { + } else if (gadget && gadget->ops->ioctl) { ret = gadget->ops->ioctl(gadget, code, value); } else { ret = -ENOTTY; -- cgit v1.1 From 89e004e78ff6317520d35bdb0d0174893ab49f17 Mon Sep 17 00:00:00 2001 From: Dong Aisheng Date: Thu, 5 Apr 2012 17:07:23 +0800 Subject: pinctrl: fix compile error if not select PINMUX support The pinctrl_register_mappings is defined in core.c, so change the dependent macro from CONFIG_MUX to CONFIG_PINCTRL. The compile error message is: drivers/pinctrl/core.c:886: error: redefinition of 'pinctrl_register_mappings' include/linux/pinctrl/machine.h:160: note: previous definition of 'pinctrl_register_mappings' was here make[2]: *** [drivers/pinctrl/core.o] Error 1 make[1]: *** [drivers/pinctrl] Error 2 make: *** [drivers] Error 2 Acked-by: Stephen Warren Signed-off-by: Dong Aisheng Signed-off-by: Linus Walleij --- include/linux/pinctrl/machine.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/pinctrl/machine.h b/include/linux/pinctrl/machine.h index fee4349..d32eb8c 100644 --- a/include/linux/pinctrl/machine.h +++ b/include/linux/pinctrl/machine.h @@ -148,7 +148,7 @@ struct pinctrl_map { #define PIN_MAP_CONFIGS_GROUP_HOG_DEFAULT(dev, grp, cfgs) \ PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, cfgs) -#ifdef CONFIG_PINMUX +#ifdef CONFIG_PINCTRL extern int pinctrl_register_mappings(struct pinctrl_map const *map, unsigned num_maps); -- cgit v1.1 From 6f11f6f1a0a717eb8bd0dadd101c4522b945c501 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 16 Mar 2012 14:54:23 -0600 Subject: pinctrl: include to prevent compile errors Macros in call ARRAY_SIZE(), the definition of which eventually calls BUILD_BUG_ON_ZERO(), which is defined in . Include that so that every .c file using the pinctrl macros doesn't have to do that itself. Signed-off-by: Stephen Warren Signed-off-by: Linus Walleij --- include/linux/pinctrl/machine.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/pinctrl/machine.h b/include/linux/pinctrl/machine.h index d32eb8c..e4d1de7 100644 --- a/include/linux/pinctrl/machine.h +++ b/include/linux/pinctrl/machine.h @@ -12,6 +12,8 @@ #ifndef __LINUX_PINCTRL_MACHINE_H #define __LINUX_PINCTRL_MACHINE_H +#include + #include "pinctrl-state.h" enum pinctrl_map_type { -- cgit v1.1 From f84cc342b1999db11ece939e1d2bf0743eb4578b Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Fri, 16 Mar 2012 14:54:25 -0600 Subject: pinctrl: implement pinctrl_check_ops Most code assumes that the pinctrl ops are present. Validate this when registering a pinctrl driver. Remove the one place in the code that was checking whether one of these non-optional ops was present. Signed-off-by: Stephen Warren Signed-off-by: Linus Walleij --- drivers/pinctrl/core.c | 25 +++++++++++++++++++++---- 1 file changed, 21 insertions(+), 4 deletions(-) diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index ec3b8cc..df6296c 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -908,10 +908,6 @@ static int pinctrl_groups_show(struct seq_file *s, void *what) const struct pinctrl_ops *ops = pctldev->desc->pctlops; unsigned selector = 0; - /* No grouping */ - if (!ops) - return 0; - mutex_lock(&pinctrl_mutex); seq_puts(s, "registered pin groups:\n"); @@ -1225,6 +1221,19 @@ static void pinctrl_remove_device_debugfs(struct pinctrl_dev *pctldev) #endif +static int pinctrl_check_ops(struct pinctrl_dev *pctldev) +{ + const struct pinctrl_ops *ops = pctldev->desc->pctlops; + + if (!ops || + !ops->list_groups || + !ops->get_group_name || + !ops->get_group_pins) + return -EINVAL; + + return 0; +} + /** * pinctrl_register() - register a pin controller device * @pctldesc: descriptor for this pin controller @@ -1256,6 +1265,14 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc, INIT_LIST_HEAD(&pctldev->gpio_ranges); pctldev->dev = dev; + /* check core ops for sanity */ + ret = pinctrl_check_ops(pctldev); + if (ret) { + pr_err("%s pinctrl ops lacks necessary functions\n", + pctldesc->name); + goto out_err; + } + /* If we're implementing pinmuxing, check the ops for sanity */ if (pctldesc->pmxops) { ret = pinmux_check_ops(pctldev); -- cgit v1.1 From 7d28e3eaa1a8e951251b942e7220f97114bd73b9 Mon Sep 17 00:00:00 2001 From: Jonas Aaberg Date: Thu, 22 Dec 2011 09:22:56 +0100 Subject: ARM: ux500: wake secondary cpu via resched Wake secondary cpu via resched instead of "Unknown IPI message 0x1" Signed-off-by: Jonas Aaberg Reviewed-by: Rickard Andersson Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/platsmp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-ux500/platsmp.c b/arch/arm/mach-ux500/platsmp.c index d2058ef..eff5842 100644 --- a/arch/arm/mach-ux500/platsmp.c +++ b/arch/arm/mach-ux500/platsmp.c @@ -99,7 +99,7 @@ int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle) */ write_pen_release(cpu_logical_map(cpu)); - gic_raise_softirq(cpumask_of(cpu), 1); + smp_send_reschedule(cpu); timeout = jiffies + (1 * HZ); while (time_before(jiffies, timeout)) { -- cgit v1.1 From 662c738d9946de521dcece2b146dced335242389 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Wed, 29 Feb 2012 23:03:11 +0100 Subject: usb: otg: gpio_vbus: Add otg transceiver events and notifiers Commit 9ad63986c606 (pda_power: Add support for using otg transceiver events) converted the pda-power driver to use otg events to determine the status of the power supply. As gpio-vbus didn't use otg events until now, this change breaks setups of pda-power with a gpio-vbus transceiver. This patch adds the necessary otg events and notifiers to gpio-vbus. Signed-off-by: Heiko Stuebner Reviewed-by: Dima Zavin Signed-off-by: Felipe Balbi --- drivers/usb/otg/gpio_vbus.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/usb/otg/gpio_vbus.c b/drivers/usb/otg/gpio_vbus.c index 3ece43a..a0a2178 100644 --- a/drivers/usb/otg/gpio_vbus.c +++ b/drivers/usb/otg/gpio_vbus.c @@ -96,7 +96,7 @@ static void gpio_vbus_work(struct work_struct *work) struct gpio_vbus_data *gpio_vbus = container_of(work, struct gpio_vbus_data, work); struct gpio_vbus_mach_info *pdata = gpio_vbus->dev->platform_data; - int gpio; + int gpio, status; if (!gpio_vbus->phy.otg->gadget) return; @@ -108,7 +108,9 @@ static void gpio_vbus_work(struct work_struct *work) */ gpio = pdata->gpio_pullup; if (is_vbus_powered(pdata)) { + status = USB_EVENT_VBUS; gpio_vbus->phy.state = OTG_STATE_B_PERIPHERAL; + gpio_vbus->phy.last_event = status; usb_gadget_vbus_connect(gpio_vbus->phy.otg->gadget); /* drawing a "unit load" is *always* OK, except for OTG */ @@ -117,6 +119,9 @@ static void gpio_vbus_work(struct work_struct *work) /* optionally enable D+ pullup */ if (gpio_is_valid(gpio)) gpio_set_value(gpio, !pdata->gpio_pullup_inverted); + + atomic_notifier_call_chain(&gpio_vbus->phy.notifier, + status, gpio_vbus->phy.otg->gadget); } else { /* optionally disable D+ pullup */ if (gpio_is_valid(gpio)) @@ -125,7 +130,12 @@ static void gpio_vbus_work(struct work_struct *work) set_vbus_draw(gpio_vbus, 0); usb_gadget_vbus_disconnect(gpio_vbus->phy.otg->gadget); + status = USB_EVENT_NONE; gpio_vbus->phy.state = OTG_STATE_B_IDLE; + gpio_vbus->phy.last_event = status; + + atomic_notifier_call_chain(&gpio_vbus->phy.notifier, + status, gpio_vbus->phy.otg->gadget); } } @@ -287,6 +297,9 @@ static int __init gpio_vbus_probe(struct platform_device *pdev) irq, err); goto err_irq; } + + ATOMIC_INIT_NOTIFIER_HEAD(&gpio_vbus->phy.notifier); + INIT_WORK(&gpio_vbus->work, gpio_vbus_work); gpio_vbus->vbus_draw = regulator_get(&pdev->dev, "vbus_draw"); -- cgit v1.1 From c85dcdac5852295cf6822f5c4331a6ddab72581f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 11 Apr 2012 16:09:10 -0400 Subject: USB: gadget: storage gadgets send wrong error code for unknown commands This patch (as1539) fixes a minor bug in the mass-storage gadget drivers. When an unknown command is received, the error code sent back is "Invalid Field in CDB" rather than "Invalid Command". This is because the bitmask of CDB bytes allowed to be nonzero is incorrect. When handling an unknown command, we don't care which command bytes are nonzero. All the bits in the mask should be set, not just eight of them. Signed-off-by: Alan Stern CC: CC: Signed-off-by: Felipe Balbi --- drivers/usb/gadget/f_mass_storage.c | 2 +- drivers/usb/gadget/file_storage.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index a371e96..cb8c162 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -2189,7 +2189,7 @@ unknown_cmnd: common->data_size_from_cmnd = 0; sprintf(unknown, "Unknown x%02x", common->cmnd[0]); reply = check_command(common, common->cmnd_size, - DATA_DIR_UNKNOWN, 0xff, 0, unknown); + DATA_DIR_UNKNOWN, ~0, 0, unknown); if (reply == 0) { common->curlun->sense_data = SS_INVALID_COMMAND; reply = -EINVAL; diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c index 4fac569..a896d73 100644 --- a/drivers/usb/gadget/file_storage.c +++ b/drivers/usb/gadget/file_storage.c @@ -2579,7 +2579,7 @@ static int do_scsi_command(struct fsg_dev *fsg) fsg->data_size_from_cmnd = 0; sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]); if ((reply = check_command(fsg, fsg->cmnd_size, - DATA_DIR_UNKNOWN, 0xff, 0, unknown)) == 0) { + DATA_DIR_UNKNOWN, ~0, 0, unknown)) == 0) { fsg->curlun->sense_data = SS_INVALID_COMMAND; reply = -EINVAL; } -- cgit v1.1 From 7e1f7c8a6e517900cd84da1b8ae020f08f286c3b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 12 Apr 2012 17:29:36 +0100 Subject: ASoC: dapm: Ensure power gets managed for line widgets Line widgets had not been included in either the power up or power down sequences so if a widget had an event associated with it that event would never be run. Fix this minimally by adding them to the sequences, we should probably be doing away with the specific widget types as they all have the same priority anyway. Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/soc-dapm.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 6241490..dc7dbfe 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -67,6 +67,7 @@ static int dapm_up_seq[] = { [snd_soc_dapm_out_drv] = 10, [snd_soc_dapm_hp] = 10, [snd_soc_dapm_spk] = 10, + [snd_soc_dapm_line] = 10, [snd_soc_dapm_post] = 11, }; @@ -75,6 +76,7 @@ static int dapm_down_seq[] = { [snd_soc_dapm_adc] = 1, [snd_soc_dapm_hp] = 2, [snd_soc_dapm_spk] = 2, + [snd_soc_dapm_line] = 2, [snd_soc_dapm_out_drv] = 2, [snd_soc_dapm_pga] = 4, [snd_soc_dapm_mixer_named_ctl] = 5, -- cgit v1.1 From 86fc49982369f6918dd9c6eeb70b38ab2303ed0a Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Thu, 12 Apr 2012 21:54:34 +0200 Subject: ASoC: cs42l73: don't use negative array index If cs42l73_get_mclkx_coeff() returns < 0 (which it can) in sound/soc/codecs/cs42l73.c::cs42l73_set_mclk(), then we'll be using the (negative) return value as array index on the very next line of code - that's bad. Catch the negative return value and propagate it to the caller (which checks for it) and things are a bit more sane :-) Signed-off-by: Jesper Juhl Signed-off-by: Mark Brown --- sound/soc/codecs/cs42l73.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/codecs/cs42l73.c b/sound/soc/codecs/cs42l73.c index 78979b3..07c44b7 100644 --- a/sound/soc/codecs/cs42l73.c +++ b/sound/soc/codecs/cs42l73.c @@ -929,6 +929,8 @@ static int cs42l73_set_mclk(struct snd_soc_dai *dai, unsigned int freq) /* MCLKX -> MCLK */ mclkx_coeff = cs42l73_get_mclkx_coeff(freq); + if (mclkx_coeff < 0) + return mclkx_coeff; mclk = cs42l73_mclkx_coeffs[mclkx_coeff].mclkx / cs42l73_mclkx_coeffs[mclkx_coeff].ratio; -- cgit v1.1 From 79cd76022044f8177bb00e3fd590ec8d6b5f8c35 Mon Sep 17 00:00:00 2001 From: Manoj Iyer Date: Mon, 9 Apr 2012 09:22:28 -0500 Subject: Bluetooth: btusb: Add vendor specific ID (0489 e042) for BCM20702A0 T: Bus=02 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0489 ProdID=e042 Rev=01.12 S: Manufacturer=Broadcom Corp S: Product=BCM20702A0 S: SerialNumber=E4D53DCA61B5 C: #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=(none) I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) I: If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) Reported-by: Dennis Chua Signed-off-by: Manoj Iyer Signed-off-by: Johan Hedberg --- drivers/bluetooth/btusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 3311b81..9af450a 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -101,6 +101,7 @@ static struct usb_device_id btusb_table[] = { { USB_DEVICE(0x0c10, 0x0000) }, /* Broadcom BCM20702A0 */ + { USB_DEVICE(0x0489, 0xe042) }, { USB_DEVICE(0x0a5c, 0x21e3) }, { USB_DEVICE(0x0a5c, 0x21e6) }, { USB_DEVICE(0x0a5c, 0x21e8) }, -- cgit v1.1 From a956bd6f8583326b18348ab1452b4686778f785d Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Thu, 12 Apr 2012 16:48:01 +0200 Subject: x86, microcode: Fix sysfs warning during module unload on unsupported CPUs Loading the microcode driver on an unsupported CPU and subsequently unloading the driver causes WARNING: at fs/sysfs/group.c:138 mc_device_remove+0x5f/0x70 [microcode]() Hardware name: 01972NG sysfs group ffffffffa00013d0 not found for kobject 'cpu0' Modules linked in: snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_intel btusb snd_hda_codec bluetooth thinkpad_acpi rfkill microcode(-) [last unloaded: cfg80211] Pid: 4560, comm: modprobe Not tainted 3.4.0-rc2-00002-g258f742 #5 Call Trace: [] ? warn_slowpath_common+0x7b/0xc0 [] ? warn_slowpath_fmt+0x45/0x50 [] ? sysfs_remove_group+0x34/0x120 [] ? mc_device_remove+0x5f/0x70 [microcode] [] ? subsys_interface_unregister+0x69/0xa0 [] ? mutex_lock+0x16/0x40 [] ? microcode_exit+0x50/0x92 [microcode] [] ? sys_delete_module+0x16d/0x260 [] ? wait_iff_congested+0x45/0x110 [] ? page_fault+0x1f/0x30 [] ? system_call_fastpath+0x16/0x1b on recent kernels. This is due to commit 8a25a2fd126c ("cpu: convert 'cpu' and 'machinecheck' sysdev_class to a regular subsystem") which renders commit 6c53cbfced04 ("x86, microcode: Correct sysdev_add error path") useless. See http://marc.info/?l=linux-kernel&m=133416246406478 Avoid above warning by restoring the old driver behaviour before 6c53cbfced04 ("x86, microcode: Correct sysdev_add error path"). Cc: stable@vger.kernel.org Cc: Tigran Aivazian Signed-off-by: Andreas Herrmann Acked-by: Greg Kroah-Hartman Link: http://lkml.kernel.org/r/20120411163849.GE4794@alberich.amd.com Signed-off-by: Borislav Petkov --- arch/x86/kernel/microcode_core.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index 87a0f86..d389e74 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -419,10 +419,8 @@ static int mc_device_add(struct device *dev, struct subsys_interface *sif) if (err) return err; - if (microcode_init_cpu(cpu) == UCODE_ERROR) { - sysfs_remove_group(&dev->kobj, &mc_attr_group); + if (microcode_init_cpu(cpu) == UCODE_ERROR) return -EINVAL; - } return err; } -- cgit v1.1 From 283c1f2558ef4a4411fe908364b15b73b6ab44cf Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Thu, 12 Apr 2012 16:51:57 +0200 Subject: x86, microcode: Ensure that module is only loaded on supported AMD CPUs Exit early when there's no support for a particular CPU family. Also, fixup the "no support for this CPU vendor" to be issued only when the driver is attempted to be loaded on an unsupported vendor. Cc: stable@vger.kernel.org Cc: Tigran Aivazian Signed-off-by: Andreas Herrmann Acked-by: Greg Kroah-Hartman Link: http://lkml.kernel.org/r/20120411163849.GE4794@alberich.amd.com [Boris: add a commit msg because Andreas is lazy] Signed-off-by: Borislav Petkov --- arch/x86/kernel/microcode_amd.c | 12 +++++++----- arch/x86/kernel/microcode_core.c | 6 +++--- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c index 73465aa..8a2ce8f 100644 --- a/arch/x86/kernel/microcode_amd.c +++ b/arch/x86/kernel/microcode_amd.c @@ -82,11 +82,6 @@ static int collect_cpu_info_amd(int cpu, struct cpu_signature *csig) { struct cpuinfo_x86 *c = &cpu_data(cpu); - if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) { - pr_warning("CPU%d: family %d not supported\n", cpu, c->x86); - return -1; - } - csig->rev = c->microcode; pr_info("CPU%d: patch_level=0x%08x\n", cpu, csig->rev); @@ -380,6 +375,13 @@ static struct microcode_ops microcode_amd_ops = { struct microcode_ops * __init init_amd_microcode(void) { + struct cpuinfo_x86 *c = &cpu_data(0); + + if (c->x86_vendor != X86_VENDOR_AMD || c->x86 < 0x10) { + pr_warning("AMD CPU family 0x%x not supported\n", c->x86); + return NULL; + } + patch = (void *)get_zeroed_page(GFP_KERNEL); if (!patch) return NULL; diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c index d389e74..c9bda6d 100644 --- a/arch/x86/kernel/microcode_core.c +++ b/arch/x86/kernel/microcode_core.c @@ -526,11 +526,11 @@ static int __init microcode_init(void) microcode_ops = init_intel_microcode(); else if (c->x86_vendor == X86_VENDOR_AMD) microcode_ops = init_amd_microcode(); - - if (!microcode_ops) { + else pr_err("no support for this CPU vendor\n"); + + if (!microcode_ops) return -ENODEV; - } microcode_pdev = platform_device_register_simple("microcode", -1, NULL, 0); -- cgit v1.1 From 87522a433ba6886b5ccbb497e0a7cb8097def64e Mon Sep 17 00:00:00 2001 From: AceLan Kao Date: Fri, 13 Apr 2012 17:39:57 +0800 Subject: Bluetooth: Add support for Atheros [13d3:3362] Add another vendor specific ID for Atheros AR3012 device. This chip is wrapped by IMC Networks. output of usb-devices: T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=13d3 ProdID=3362 Rev=00.02 S: Manufacturer=Atheros Communications S: Product=Bluetooth USB Host Controller S: SerialNumber=Alaska Day 2006 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb Signed-off-by: AceLan Kao Signed-off-by: Johan Hedberg --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index ae9edca..639a161 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -75,6 +75,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x0CF3, 0x311D) }, { USB_DEVICE(0x13d3, 0x3375) }, { USB_DEVICE(0x04CA, 0x3005) }, + { USB_DEVICE(0x13d3, 0x3362) }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xE02C) }, @@ -94,6 +95,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, { } /* Terminating entry */ }; diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 9af450a..a497544 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -134,6 +134,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, -- cgit v1.1 From d99de7f552fac43e24fd4fb8048d8f21abaea691 Mon Sep 17 00:00:00 2001 From: Fernando Guzman Lugo Date: Fri, 13 Apr 2012 05:08:03 -0600 Subject: ARM: OMAP2+: hwmod: add softreset delay field and OMAP4 data Due to HW limitation, some IPs should not be accessed just after a softreset. Since the current hwmod sequence is accessing the sysconfig register just after the reset, it might lead to OCP bus error in that case. Add a new field in the sysconfig structure to specify a delay in usecs needed after doing a softreset. In the case of the ISS and FDIF modules, the L3 OCP port will be disconnected upon a SW reset. That issue was confirmed with HW simulation and an errata should be available soon. The HW recommendation to avoid that is to wait for 100 OCP clk cycles, before accessing the IP. Considering the worse case (OPP50), the L3 bus will run at 100 MHz, so a 1 usec delay is needed. Add an x2 margin to be safe. Acked-by: Benoit Cousson Signed-off-by: Fernando Guzman Lugo [paul@pwsan.com: dropped FDIF change for now since the hwmod data is not yet upstream; the FDIF change will need to be added later once the FDIF data is merged] Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod.c | 3 +++ arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 9 +++++++++ arch/arm/plat-omap/include/plat/omap_hwmod.h | 4 +++- 3 files changed, 15 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 2c27fdb..45f1d9c 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1422,6 +1422,9 @@ static int _ocp_softreset(struct omap_hwmod *oh) goto dis_opt_clks; _write_sysconfig(v, oh); + if (oh->class->sysc->srst_udelay) + udelay(oh->class->sysc->srst_udelay); + if (oh->class->sysc->sysc_flags & SYSS_HAS_RESET_STATUS) omap_test_timeout((omap_hwmod_read(oh, oh->class->sysc->syss_offs) diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c index cc9bd10..6abc757 100644 --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c @@ -2594,6 +2594,15 @@ static struct omap_hwmod omap44xx_ipu_hwmod = { static struct omap_hwmod_class_sysconfig omap44xx_iss_sysc = { .rev_offs = 0x0000, .sysc_offs = 0x0010, + /* + * ISS needs 100 OCP clk cycles delay after a softreset before + * accessing sysconfig again. + * The lowest frequency at the moment for L3 bus is 100 MHz, so + * 1usec delay is needed. Add an x2 margin to be safe (2 usecs). + * + * TODO: Indicate errata when available. + */ + .srst_udelay = 2, .sysc_flags = (SYSC_HAS_MIDLEMODE | SYSC_HAS_RESET_STATUS | SYSC_HAS_SIDLEMODE | SYSC_HAS_SOFTRESET), .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART | diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 8070145..3f26db4 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -305,6 +305,7 @@ struct omap_hwmod_sysc_fields { * @rev_offs: IP block revision register offset (from module base addr) * @sysc_offs: OCP_SYSCONFIG register offset (from module base addr) * @syss_offs: OCP_SYSSTATUS register offset (from module base addr) + * @srst_udelay: Delay needed after doing a softreset in usecs * @idlemodes: One or more of {SIDLE,MSTANDBY}_{OFF,FORCE,SMART} * @sysc_flags: SYS{C,S}_HAS* flags indicating SYSCONFIG bits supported * @clockact: the default value of the module CLOCKACTIVITY bits @@ -330,9 +331,10 @@ struct omap_hwmod_class_sysconfig { u16 sysc_offs; u16 syss_offs; u16 sysc_flags; + struct omap_hwmod_sysc_fields *sysc_fields; + u8 srst_udelay; u8 idlemodes; u8 clockact; - struct omap_hwmod_sysc_fields *sysc_fields; }; /** -- cgit v1.1 From 3c55c1baffa5f719eb2ae9729088bc867f972f53 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Fri, 13 Apr 2012 05:08:43 -0600 Subject: ARM: OMAP2+: hwmod: Revert "ARM: OMAP2+: hwmod: Make omap_hwmod_softreset wait for reset status" This reverts commit f9a2f9c3fa76eec55928e8e06f3094c8f01df7cb. This commit caused a regression in the I2C hwmod reset on OMAP2/3/4, logging messages similar to these during boot: [ 0.200378] omap_hwmod: i2c1: softreset failed (waited 10000 usec) [ 0.222076] omap_hwmod: i2c2: softreset failed (waited 10000 usec) While the original patch was intended to fix some reset-related timing issues, it's believed that these problems were actually fixed by commit 2800852a079504f35f88e44faf5c9c96318c0cca ("ARM: OMAP2+: hwmod: Restore sysc after a reset"): http://marc.info/?l=linux-arm-kernel&m=133410322617245&w=2 Cc: Rajendra Nayak Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 45f1d9c..7144ae6 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1906,10 +1906,20 @@ void omap_hwmod_write(u32 v, struct omap_hwmod *oh, u16 reg_offs) */ int omap_hwmod_softreset(struct omap_hwmod *oh) { - if (!oh) + u32 v; + int ret; + + if (!oh || !(oh->_sysc_cache)) return -EINVAL; - return _ocp_softreset(oh); + v = oh->_sysc_cache; + ret = _set_softreset(oh, &v); + if (ret) + goto error; + _write_sysconfig(v, oh); + +error: + return ret; } /** -- cgit v1.1 From 1f5e6247ca99287bac87aff4971a7eee9c2b223a Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Fri, 13 Apr 2012 13:31:55 +0530 Subject: ARM: OMAP2/3: VENC hwmods: Remove OCPIF_SWSUP_IDLE flag from VENC slave interface The clocks for all DSS slave interfaces were recently changed to "dss_ick" on OMAP2 and OMAP3, this clock can be autoidled by PRCM. The VENC interface previously had "dss_54m_fck" as it's clock which couldn't be autoidled, and hence the OCPIF_SWSUP_IDLE flag was needed. Remove the OCPIF_SWSUP_IDLE flag from VENC interfaces as it's clock is now "dss_ick". This allows the PRCM hardware to autoidle the VENC interface clocks when they are not active, rather than relying on the software to do it, which can keep the interface clocks active unnecessarily. Signed-off-by: Archit Taneja [paul@pwsan.com: add a short description of the fix to the commit log] Signed-off-by: Paul Walmsley --- arch/arm/mach-omap2/omap_hwmod_2420_data.c | 1 - arch/arm/mach-omap2/omap_hwmod_2430_data.c | 1 - arch/arm/mach-omap2/omap_hwmod_3xxx_data.c | 1 - 3 files changed, 3 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c index a5409ce..a6bde34 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c @@ -1000,7 +1000,6 @@ static struct omap_hwmod_ocp_if omap2420_l4_core__dss_venc = { .flags = OMAP_FIREWALL_L4, } }, - .flags = OCPIF_SWSUP_IDLE, .user = OCP_USER_MPU | OCP_USER_SDMA, }; diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c index c4f56cb..04a3885 100644 --- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c @@ -1049,7 +1049,6 @@ static struct omap_hwmod_ocp_if omap2430_l4_core__dss_venc = { .slave = &omap2430_dss_venc_hwmod, .clk = "dss_ick", .addr = omap2_dss_venc_addrs, - .flags = OCPIF_SWSUP_IDLE, .user = OCP_USER_MPU | OCP_USER_SDMA, }; diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c index 34b9766d..db86ce9 100644 --- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c +++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c @@ -1676,7 +1676,6 @@ static struct omap_hwmod_ocp_if omap3xxx_l4_core__dss_venc = { .flags = OMAP_FIREWALL_L4, } }, - .flags = OCPIF_SWSUP_IDLE, .user = OCP_USER_MPU | OCP_USER_SDMA, }; -- cgit v1.1 From 7d3d43dab4e978d8d9ad1acf8af15c9b1c4b0f0f Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 6 Apr 2012 15:33:35 +0000 Subject: net: In unregister_netdevice_notifier unregister the netdevices. We already synthesize events in register_netdevice_notifier and synthesizing events in unregister_netdevice_notifier allows to us remove the need for special case cleanup code. This change should be safe as it adds no new cases for existing callers of unregiser_netdevice_notifier to handle. Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller --- net/core/dev.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/net/core/dev.c b/net/core/dev.c index c25d453..9bb8f87 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1409,14 +1409,34 @@ EXPORT_SYMBOL(register_netdevice_notifier); * register_netdevice_notifier(). The notifier is unlinked into the * kernel structures and may then be reused. A negative errno code * is returned on a failure. + * + * After unregistering unregister and down device events are synthesized + * for all devices on the device list to the removed notifier to remove + * the need for special case cleanup code. */ int unregister_netdevice_notifier(struct notifier_block *nb) { + struct net_device *dev; + struct net *net; int err; rtnl_lock(); err = raw_notifier_chain_unregister(&netdev_chain, nb); + if (err) + goto unlock; + + for_each_net(net) { + for_each_netdev(net, dev) { + if (dev->flags & IFF_UP) { + nb->notifier_call(nb, NETDEV_GOING_DOWN, dev); + nb->notifier_call(nb, NETDEV_DOWN, dev); + } + nb->notifier_call(nb, NETDEV_UNREGISTER, dev); + nb->notifier_call(nb, NETDEV_UNREGISTER_BATCH, dev); + } + } +unlock: rtnl_unlock(); return err; } -- cgit v1.1 From 03478756b1b9298686ca9c8793e484ae39eb4649 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 6 Apr 2012 15:35:39 +0000 Subject: phonet: Sort out initiailziation and cleanup code. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Recently an oops was reported in phonet if there was a failure during network namespace creation. [ 163.733755] ------------[ cut here ]------------ [ 163.734501] kernel BUG at include/net/netns/generic.h:45! [ 163.734501] invalid opcode: 0000 [#1] PREEMPT SMP [ 163.734501] CPU 2 [ 163.734501] Pid: 19145, comm: trinity Tainted: G W 3.4.0-rc1-next-20120405-sasha-dirty #57 [ 163.734501] RIP: 0010:[] [] phonet_pernet+0x182/0x1a0 [ 163.734501] RSP: 0018:ffff8800674d5ca8 EFLAGS: 00010246 [ 163.734501] RAX: 000000003fffffff RBX: 0000000000000000 RCX: ffff8800678c88d8 [ 163.734501] RDX: 00000000003f4000 RSI: ffff8800678c8910 RDI: 0000000000000282 [ 163.734501] RBP: ffff8800674d5cc8 R08: 0000000000000000 R09: 0000000000000000 [ 163.734501] R10: 0000000000000000 R11: 0000000000000000 R12: ffff880068bec920 [ 163.734501] R13: ffffffff836b90c0 R14: 0000000000000000 R15: 0000000000000000 [ 163.734501] FS: 00007f055e8de700(0000) GS:ffff88007d000000(0000) knlGS:0000000000000000 [ 163.734501] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 163.734501] CR2: 00007f055e6bb518 CR3: 0000000070c16000 CR4: 00000000000406e0 [ 163.734501] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 163.734501] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 163.734501] Process trinity (pid: 19145, threadinfo ffff8800674d4000, task ffff8800678c8000) [ 163.734501] Stack: [ 163.734501] ffffffff824d5f00 ffffffff810e2ec1 ffff880067ae0000 00000000ffffffd4 [ 163.734501] ffff8800674d5cf8 ffffffff824d667a ffff880067ae0000 00000000ffffffd4 [ 163.734501] ffffffff836b90c0 0000000000000000 ffff8800674d5d18 ffffffff824d707d [ 163.734501] Call Trace: [ 163.734501] [] ? phonet_pernet+0x20/0x1a0 [ 163.734501] [] ? get_parent_ip+0x11/0x50 [ 163.734501] [] phonet_device_destroy+0x1a/0x100 [ 163.734501] [] phonet_device_notify+0x3d/0x50 [ 163.734501] [] notifier_call_chain+0xee/0x130 [ 163.734501] [] raw_notifier_call_chain+0x11/0x20 [ 163.734501] [] call_netdevice_notifiers+0x52/0x60 [ 163.734501] [] rollback_registered_many+0x185/0x270 [ 163.734501] [] unregister_netdevice_many+0x14/0x60 [ 163.734501] [] ipip_exit_net+0x1b3/0x1d0 [ 163.734501] [] ? ipip_rcv+0x420/0x420 [ 163.734501] [] ops_exit_list+0x35/0x70 [ 163.734501] [] setup_net+0xab/0xe0 [ 163.734501] [] copy_net_ns+0x76/0x100 [ 163.734501] [] create_new_namespaces+0xfb/0x190 [ 163.734501] [] unshare_nsproxy_namespaces+0x61/0x80 [ 163.734501] [] sys_unshare+0xff/0x290 [ 163.734501] [] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 163.734501] [] system_call_fastpath+0x16/0x1b [ 163.734501] Code: e0 c3 fe 66 0f 1f 44 00 00 48 c7 c2 40 60 4d 82 be 01 00 00 00 48 c7 c7 80 d1 23 83 e8 48 2a c4 fe e8 73 06 c8 fe 48 85 db 75 0e <0f> 0b 0f 1f 40 00 eb fe 66 0f 1f 44 00 00 48 83 c4 10 48 89 d8 [ 163.734501] RIP [] phonet_pernet+0x182/0x1a0 [ 163.734501] RSP [ 163.861289] ---[ end trace fb5615826c548066 ]--- After investigation it turns out there were two issues. 1) Phonet was not implementing network devices but was using register_pernet_device instead of register_pernet_subsys. This was allowing there to be cases when phonenet was not initialized and the phonet net_generic was not set for a network namespace when network device events were being reported on the netdevice_notifier for a network namespace leading to the oops above. 2) phonet_exit_net was implementing a confusing and special case of handling all network devices from going away that it was hard to see was correct, and would only occur when the phonet module was removed. Now that unregister_netdevice_notifier has been modified to synthesize unregistration events for the network devices that are extant when called this confusing special case in phonet_exit_net is no longer needed. Signed-off-by: Eric W. Biederman Acked-by: Rémi Denis-Courmont Signed-off-by: David S. Miller --- net/phonet/pn_dev.c | 21 ++------------------- 1 file changed, 2 insertions(+), 19 deletions(-) diff --git a/net/phonet/pn_dev.c b/net/phonet/pn_dev.c index 9b9a85e..bf5cf69 100644 --- a/net/phonet/pn_dev.c +++ b/net/phonet/pn_dev.c @@ -331,23 +331,6 @@ static int __net_init phonet_init_net(struct net *net) static void __net_exit phonet_exit_net(struct net *net) { - struct phonet_net *pnn = phonet_pernet(net); - struct net_device *dev; - unsigned i; - - rtnl_lock(); - for_each_netdev(net, dev) - phonet_device_destroy(dev); - - for (i = 0; i < 64; i++) { - dev = pnn->routes.table[i]; - if (dev) { - rtm_phonet_notify(RTM_DELROUTE, dev, i); - dev_put(dev); - } - } - rtnl_unlock(); - proc_net_remove(net, "phonet"); } @@ -361,7 +344,7 @@ static struct pernet_operations phonet_net_ops = { /* Initialize Phonet devices list */ int __init phonet_device_init(void) { - int err = register_pernet_device(&phonet_net_ops); + int err = register_pernet_subsys(&phonet_net_ops); if (err) return err; @@ -377,7 +360,7 @@ void phonet_device_exit(void) { rtnl_unregister_all(PF_PHONET); unregister_netdevice_notifier(&phonet_device_notifier); - unregister_pernet_device(&phonet_net_ops); + unregister_pernet_subsys(&phonet_net_ops); proc_net_remove(&init_net, "pnresource"); } -- cgit v1.1 From 89eb06f11c314c2ab4ec59039715dc021933a7a0 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 8 Apr 2012 22:41:10 +0000 Subject: net/key/af_key.c: add missing kfree_skb At the point of this error-handling code, alloc_skb has succeded, so free the resulting skb by jumping to the err label. Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- net/key/af_key.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/key/af_key.c b/net/key/af_key.c index 11dbb22..7e5d927 100644 --- a/net/key/af_key.c +++ b/net/key/af_key.c @@ -3480,7 +3480,7 @@ static int pfkey_send_migrate(const struct xfrm_selector *sel, u8 dir, u8 type, /* Addresses to be used by KM for negotiation, if ext is available */ if (k != NULL && (set_sadb_kmaddress(skb, k) < 0)) - return -EINVAL; + goto err; /* selector src */ set_sadb_address(skb, sasize_sel, SADB_EXT_ADDRESS_SRC, sel); -- cgit v1.1 From 31304165ffb888483e0f7c805876f25f493a3049 Mon Sep 17 00:00:00 2001 From: Torsten Kaiser Date: Mon, 9 Apr 2012 05:14:15 +0000 Subject: net: Fix misplaced parenthesis in virtio_net.c Commit 2e57b79ccef1ff1422fdf45a9b28fe60f8f084f7 misplaced its parenthesis and now tx_fifo_errors will only be incremented if an ENOMEM error is not written to the syslog. Correct the parenthesis and indentation to the original goal of counting all non ENOMEM errors and ratelimiting only the messages. Signed-of-by: Torsten Kaiser Signed-off-by: David S. Miller --- drivers/net/virtio_net.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 4de2760..af8acc8 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -626,16 +626,15 @@ static netdev_tx_t start_xmit(struct sk_buff *skb, struct net_device *dev) /* This can happen with OOM and indirect buffers. */ if (unlikely(capacity < 0)) { if (likely(capacity == -ENOMEM)) { - if (net_ratelimit()) { + if (net_ratelimit()) dev_warn(&dev->dev, "TX queue failure: out of memory\n"); - } else { + } else { dev->stats.tx_fifo_errors++; if (net_ratelimit()) dev_warn(&dev->dev, "Unexpected TX queue failure: %d\n", capacity); - } } dev->stats.tx_dropped++; kfree_skb(skb); -- cgit v1.1 From d1f224ae186b834af647661ffaf403a817c050ce Mon Sep 17 00:00:00 2001 From: James Chapman Date: Tue, 10 Apr 2012 00:10:42 +0000 Subject: l2tp: fix refcount leak in l2tp_ip sockets The l2tp_ip socket close handler does not update the module refcount correctly which prevents module unload after the first bind() call on an L2TPv3 IP encapulation socket. Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_ip.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 55670ec..b56be14 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -232,7 +232,7 @@ static void l2tp_ip_close(struct sock *sk, long timeout) { write_lock_bh(&l2tp_ip_lock); hlist_del_init(&sk->sk_bind_node); - hlist_del_init(&sk->sk_node); + sk_del_node_init(sk); write_unlock_bh(&l2tp_ip_lock); sk_common_release(sk); } -- cgit v1.1 From c9be48dc8bb22f1f6e6ff1560b2b28e925a0b815 Mon Sep 17 00:00:00 2001 From: James Chapman Date: Tue, 10 Apr 2012 00:10:43 +0000 Subject: l2tp: don't overwrite source address in l2tp_ip_bind() Applications using L2TP/IP sockets want to be able to bind() an L2TP/IP socket to set the local tunnel id while leaving the auto-assigned source address alone. So if no source address is supplied, don't overwrite the address already stored in the socket. Signed-off-by: James Chapman Signed-off-by: David S. Miller --- net/l2tp/l2tp_ip.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index b56be14..585d93e 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -271,7 +271,8 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST) goto out; - inet->inet_rcv_saddr = inet->inet_saddr = addr->l2tp_addr.s_addr; + if (addr->l2tp_addr.s_addr) + inet->inet_rcv_saddr = inet->inet_saddr = addr->l2tp_addr.s_addr; if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST) inet->inet_saddr = 0; /* Use device */ sk_dst_reset(sk); -- cgit v1.1 From 5c699fb7d88d360023f3b3f5291cbf5b59883a1b Mon Sep 17 00:00:00 2001 From: Tomasz Gregorek Date: Thu, 12 Apr 2012 08:18:07 +0000 Subject: caif: Fix memory leakage in the chnl_net.c. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Added kfree_skb() calls in the chnk_net.c file on the error paths. Signed-off-by: Sjur Brændeland Signed-off-by: David S. Miller --- net/caif/chnl_net.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/caif/chnl_net.c b/net/caif/chnl_net.c index 20618dd..d09340e 100644 --- a/net/caif/chnl_net.c +++ b/net/caif/chnl_net.c @@ -103,6 +103,7 @@ static int chnl_recv_cb(struct cflayer *layr, struct cfpkt *pkt) skb->protocol = htons(ETH_P_IPV6); break; default: + kfree_skb(skb); priv->netdev->stats.rx_errors++; return -EINVAL; } @@ -220,14 +221,16 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev) if (skb->len > priv->netdev->mtu) { pr_warn("Size of skb exceeded MTU\n"); + kfree_skb(skb); dev->stats.tx_errors++; - return -ENOSPC; + return NETDEV_TX_OK; } if (!priv->flowenabled) { pr_debug("dropping packets flow off\n"); + kfree_skb(skb); dev->stats.tx_dropped++; - return NETDEV_TX_BUSY; + return NETDEV_TX_OK; } if (priv->conn_req.protocol == CAIFPROTO_DATAGRAM_LOOP) @@ -242,7 +245,7 @@ static int chnl_net_start_xmit(struct sk_buff *skb, struct net_device *dev) result = priv->chnl.dn->transmit(priv->chnl.dn, pkt); if (result) { dev->stats.tx_dropped++; - return result; + return NETDEV_TX_OK; } /* Update statistics. */ -- cgit v1.1 From 5f614e6b7005685b3e34da0742f79389c858c7e1 Mon Sep 17 00:00:00 2001 From: "sjur.brandeland@stericsson.com" Date: Thu, 12 Apr 2012 08:18:08 +0000 Subject: caif-hsi: Free flip_buffer at shutdown MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fix memory leak of RX flip-buffer. Signed-off-by: Sjur Brændeland Signed-off-by: David S. Miller --- drivers/net/caif/caif_hsi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c index 9a66e2a..d0d9a6f 100644 --- a/drivers/net/caif/caif_hsi.c +++ b/drivers/net/caif/caif_hsi.c @@ -1210,7 +1210,7 @@ int cfhsi_probe(struct platform_device *pdev) static void cfhsi_shutdown(struct cfhsi *cfhsi) { - u8 *tx_buf, *rx_buf; + u8 *tx_buf, *rx_buf, *flip_buf; /* Stop TXing */ netif_tx_stop_all_queues(cfhsi->ndev); @@ -1234,7 +1234,7 @@ static void cfhsi_shutdown(struct cfhsi *cfhsi) /* Store bufferes: will be freed later. */ tx_buf = cfhsi->tx_buf; rx_buf = cfhsi->rx_buf; - + flip_buf = cfhsi->rx_flip_buf; /* Flush transmit queues. */ cfhsi_abort_tx(cfhsi); @@ -1247,6 +1247,7 @@ static void cfhsi_shutdown(struct cfhsi *cfhsi) /* Free buffers. */ kfree(tx_buf); kfree(rx_buf); + kfree(flip_buf); } int cfhsi_remove(struct platform_device *pdev) -- cgit v1.1 From d62f8dbb5b7771910f7c4657345df8ac93acb832 Mon Sep 17 00:00:00 2001 From: Kim Lilliestierna XX Date: Thu, 12 Apr 2012 08:18:09 +0000 Subject: caif_hsi: use dev_dbg not dev_err for reporting Use dev_dbg instead of dev_err for reporting in cfhsi_wakeup_cb. Signed-off-by: Kim Lilliestierna Signed-off-by: David S. Miller --- drivers/net/caif/caif_hsi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c index d0d9a6f..9c1c8cd 100644 --- a/drivers/net/caif/caif_hsi.c +++ b/drivers/net/caif/caif_hsi.c @@ -744,14 +744,14 @@ static void cfhsi_wake_up(struct work_struct *work) size_t fifo_occupancy = 0; /* Wakeup timeout */ - dev_err(&cfhsi->ndev->dev, "%s: Timeout.\n", + dev_dbg(&cfhsi->ndev->dev, "%s: Timeout.\n", __func__); /* Check FIFO to check if modem has sent something. */ WARN_ON(cfhsi->dev->cfhsi_fifo_occupancy(cfhsi->dev, &fifo_occupancy)); - dev_err(&cfhsi->ndev->dev, "%s: Bytes in FIFO: %u.\n", + dev_dbg(&cfhsi->ndev->dev, "%s: Bytes in FIFO: %u.\n", __func__, (unsigned) fifo_occupancy); /* Check if we misssed the interrupt. */ -- cgit v1.1 From 1716a96101c49186bb0b8491922fd3e69030235f Mon Sep 17 00:00:00 2001 From: Gao feng Date: Fri, 6 Apr 2012 00:13:10 +0000 Subject: ipv6: fix problem with expired dst cache If the ipv6 dst cache which copy from the dst generated by ICMPV6 RA packet. this dst cache will not check expire because it has no RTF_EXPIRES flag. So this dst cache will always be used until the dst gc run. Change the struct dst_entry,add a union contains new pointer from and expires. When rt6_info.rt6i_flags has no RTF_EXPIRES flag,the dst.expires has no use. we can use this field to point to where the dst cache copy from. The dst.from is only used in IPV6. rt6_check_expired check if rt6_info.dst.from is expired. ip6_rt_copy only set dst.from when the ort has flag RTF_ADDRCONF and RTF_DEFAULT.then hold the ort. ip6_dst_destroy release the ort. Add some functions to operate the RTF_EXPIRES flag and expires(from) together. and change the code to use these new adding functions. Changes from v5: modify ip6_route_add and ndisc_router_discovery to use new adding functions. Only set dst.from when the ort has flag RTF_ADDRCONF and RTF_DEFAULT.then hold the ort. Signed-off-by: Gao feng Signed-off-by: David S. Miller --- include/net/dst.h | 6 ++++- include/net/ip6_fib.h | 42 ++++++++++++++++++++++++++++++ net/ipv6/addrconf.c | 9 +++---- net/ipv6/ip6_fib.c | 9 +++---- net/ipv6/ndisc.c | 3 +-- net/ipv6/route.c | 71 +++++++++++++++++++++++++++++++-------------------- 6 files changed, 99 insertions(+), 41 deletions(-) diff --git a/include/net/dst.h b/include/net/dst.h index 59c5d18..ff4da42 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -36,7 +36,11 @@ struct dst_entry { struct net_device *dev; struct dst_ops *ops; unsigned long _metrics; - unsigned long expires; + union { + unsigned long expires; + /* point to where the dst_entry copied from */ + struct dst_entry *from; + }; struct dst_entry *path; struct neighbour __rcu *_neighbour; #ifdef CONFIG_XFRM diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index b26bb81..c64778f 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -123,6 +123,48 @@ static inline struct inet6_dev *ip6_dst_idev(struct dst_entry *dst) return ((struct rt6_info *)dst)->rt6i_idev; } +static inline void rt6_clean_expires(struct rt6_info *rt) +{ + if (!(rt->rt6i_flags & RTF_EXPIRES) && rt->dst.from) + dst_release(rt->dst.from); + + rt->rt6i_flags &= ~RTF_EXPIRES; + rt->dst.expires = 0; +} + +static inline void rt6_set_expires(struct rt6_info *rt, unsigned long expires) +{ + if (!(rt->rt6i_flags & RTF_EXPIRES) && rt->dst.from) + dst_release(rt->dst.from); + + rt->rt6i_flags |= RTF_EXPIRES; + rt->dst.expires = expires; +} + +static inline void rt6_update_expires(struct rt6_info *rt, int timeout) +{ + if (!(rt->rt6i_flags & RTF_EXPIRES) && rt->dst.from) + dst_release(rt->dst.from); + + dst_set_expires(&rt->dst, timeout); + rt->rt6i_flags |= RTF_EXPIRES; +} + +static inline void rt6_set_from(struct rt6_info *rt, struct rt6_info *from) +{ + struct dst_entry *new = (struct dst_entry *) from; + + if (!(rt->rt6i_flags & RTF_EXPIRES) && rt->dst.from) { + if (new == rt->dst.from) + return; + dst_release(rt->dst.from); + } + + rt->rt6i_flags &= ~RTF_EXPIRES; + rt->dst.from = new; + dst_hold(new); +} + struct fib6_walker_t { struct list_head lh; struct fib6_node *root, *node; diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 6a3bb60..7d5cb97 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -803,8 +803,7 @@ static void ipv6_del_addr(struct inet6_ifaddr *ifp) ip6_del_rt(rt); rt = NULL; } else if (!(rt->rt6i_flags & RTF_EXPIRES)) { - rt->dst.expires = expires; - rt->rt6i_flags |= RTF_EXPIRES; + rt6_set_expires(rt, expires); } } dst_release(&rt->dst); @@ -1887,11 +1886,9 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao) rt = NULL; } else if (addrconf_finite_timeout(rt_expires)) { /* not infinity */ - rt->dst.expires = jiffies + rt_expires; - rt->rt6i_flags |= RTF_EXPIRES; + rt6_set_expires(rt, jiffies + rt_expires); } else { - rt->rt6i_flags &= ~RTF_EXPIRES; - rt->dst.expires = 0; + rt6_clean_expires(rt); } } else if (valid_lft) { clock_t expires = 0; diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c index 5b27fbc..9371743 100644 --- a/net/ipv6/ip6_fib.c +++ b/net/ipv6/ip6_fib.c @@ -673,11 +673,10 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt, &rt->rt6i_gateway)) { if (!(iter->rt6i_flags & RTF_EXPIRES)) return -EEXIST; - iter->dst.expires = rt->dst.expires; - if (!(rt->rt6i_flags & RTF_EXPIRES)) { - iter->rt6i_flags &= ~RTF_EXPIRES; - iter->dst.expires = 0; - } + if (!(rt->rt6i_flags & RTF_EXPIRES)) + rt6_clean_expires(iter); + else + rt6_set_expires(iter, rt->dst.expires); return -EEXIST; } } diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c index 3dcdb81..176b469 100644 --- a/net/ipv6/ndisc.c +++ b/net/ipv6/ndisc.c @@ -1264,8 +1264,7 @@ static void ndisc_router_discovery(struct sk_buff *skb) } if (rt) - rt->dst.expires = jiffies + (HZ * lifetime); - + rt6_set_expires(rt, jiffies + (HZ * lifetime)); if (ra_msg->icmph.icmp6_hop_limit) { in6_dev->cnf.hop_limit = ra_msg->icmph.icmp6_hop_limit; if (rt) diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 3992e26..bc4888d 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -62,7 +62,7 @@ #include #endif -static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort, +static struct rt6_info *ip6_rt_copy(struct rt6_info *ort, const struct in6_addr *dest); static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie); static unsigned int ip6_default_advmss(const struct dst_entry *dst); @@ -285,6 +285,10 @@ static void ip6_dst_destroy(struct dst_entry *dst) rt->rt6i_idev = NULL; in6_dev_put(idev); } + + if (!(rt->rt6i_flags & RTF_EXPIRES) && dst->from) + dst_release(dst->from); + if (peer) { rt->rt6i_peer = NULL; inet_putpeer(peer); @@ -329,8 +333,17 @@ static void ip6_dst_ifdown(struct dst_entry *dst, struct net_device *dev, static __inline__ int rt6_check_expired(const struct rt6_info *rt) { - return (rt->rt6i_flags & RTF_EXPIRES) && - time_after(jiffies, rt->dst.expires); + struct rt6_info *ort = NULL; + + if (rt->rt6i_flags & RTF_EXPIRES) { + if (time_after(jiffies, rt->dst.expires)) + return 1; + } else if (rt->dst.from) { + ort = (struct rt6_info *) rt->dst.from; + return (ort->rt6i_flags & RTF_EXPIRES) && + time_after(jiffies, ort->dst.expires); + } + return 0; } static inline int rt6_need_strict(const struct in6_addr *daddr) @@ -620,12 +633,11 @@ int rt6_route_rcv(struct net_device *dev, u8 *opt, int len, (rt->rt6i_flags & ~RTF_PREF_MASK) | RTF_PREF(pref); if (rt) { - if (!addrconf_finite_timeout(lifetime)) { - rt->rt6i_flags &= ~RTF_EXPIRES; - } else { - rt->dst.expires = jiffies + HZ * lifetime; - rt->rt6i_flags |= RTF_EXPIRES; - } + if (!addrconf_finite_timeout(lifetime)) + rt6_clean_expires(rt); + else + rt6_set_expires(rt, jiffies + HZ * lifetime); + dst_release(&rt->dst); } return 0; @@ -730,7 +742,7 @@ int ip6_ins_rt(struct rt6_info *rt) return __ip6_ins_rt(rt, &info); } -static struct rt6_info *rt6_alloc_cow(const struct rt6_info *ort, +static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, const struct in6_addr *daddr, const struct in6_addr *saddr) { @@ -954,10 +966,10 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori rt->rt6i_idev = ort->rt6i_idev; if (rt->rt6i_idev) in6_dev_hold(rt->rt6i_idev); - rt->dst.expires = 0; rt->rt6i_gateway = ort->rt6i_gateway; - rt->rt6i_flags = ort->rt6i_flags & ~RTF_EXPIRES; + rt->rt6i_flags = ort->rt6i_flags; + rt6_clean_expires(rt); rt->rt6i_metric = 0; memcpy(&rt->rt6i_dst, &ort->rt6i_dst, sizeof(struct rt6key)); @@ -1019,10 +1031,9 @@ static void ip6_link_failure(struct sk_buff *skb) rt = (struct rt6_info *) skb_dst(skb); if (rt) { - if (rt->rt6i_flags & RTF_CACHE) { - dst_set_expires(&rt->dst, 0); - rt->rt6i_flags |= RTF_EXPIRES; - } else if (rt->rt6i_node && (rt->rt6i_flags & RTF_DEFAULT)) + if (rt->rt6i_flags & RTF_CACHE) + rt6_update_expires(rt, 0); + else if (rt->rt6i_node && (rt->rt6i_flags & RTF_DEFAULT)) rt->rt6i_node->fn_sernum = -1; } } @@ -1289,9 +1300,12 @@ int ip6_route_add(struct fib6_config *cfg) } rt->dst.obsolete = -1; - rt->dst.expires = (cfg->fc_flags & RTF_EXPIRES) ? - jiffies + clock_t_to_jiffies(cfg->fc_expires) : - 0; + + if (cfg->fc_flags & RTF_EXPIRES) + rt6_set_expires(rt, jiffies + + clock_t_to_jiffies(cfg->fc_expires)); + else + rt6_clean_expires(rt); if (cfg->fc_protocol == RTPROT_UNSPEC) cfg->fc_protocol = RTPROT_BOOT; @@ -1736,8 +1750,8 @@ again: features |= RTAX_FEATURE_ALLFRAG; dst_metric_set(&rt->dst, RTAX_FEATURES, features); } - dst_set_expires(&rt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires); - rt->rt6i_flags |= RTF_MODIFIED|RTF_EXPIRES; + rt6_update_expires(rt, net->ipv6.sysctl.ip6_rt_mtu_expires); + rt->rt6i_flags |= RTF_MODIFIED; goto out; } @@ -1765,9 +1779,8 @@ again: * which is 10 mins. After 10 mins the decreased pmtu is expired * and detecting PMTU increase will be automatically happened. */ - dst_set_expires(&nrt->dst, net->ipv6.sysctl.ip6_rt_mtu_expires); - nrt->rt6i_flags |= RTF_DYNAMIC|RTF_EXPIRES; - + rt6_update_expires(nrt, net->ipv6.sysctl.ip6_rt_mtu_expires); + nrt->rt6i_flags |= RTF_DYNAMIC; ip6_ins_rt(nrt); } out: @@ -1799,7 +1812,7 @@ void rt6_pmtu_discovery(const struct in6_addr *daddr, const struct in6_addr *sad * Misc support functions */ -static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort, +static struct rt6_info *ip6_rt_copy(struct rt6_info *ort, const struct in6_addr *dest) { struct net *net = dev_net(ort->dst.dev); @@ -1819,10 +1832,14 @@ static struct rt6_info *ip6_rt_copy(const struct rt6_info *ort, if (rt->rt6i_idev) in6_dev_hold(rt->rt6i_idev); rt->dst.lastuse = jiffies; - rt->dst.expires = 0; rt->rt6i_gateway = ort->rt6i_gateway; - rt->rt6i_flags = ort->rt6i_flags & ~RTF_EXPIRES; + rt->rt6i_flags = ort->rt6i_flags; + if ((ort->rt6i_flags & (RTF_DEFAULT | RTF_ADDRCONF)) == + (RTF_DEFAULT | RTF_ADDRCONF)) + rt6_set_from(rt, ort); + else + rt6_clean_expires(rt); rt->rt6i_metric = 0; #ifdef CONFIG_IPV6_SUBTREES -- cgit v1.1 From 9a5d2bd99e0dfe9a31b3c160073ac445ba3d773f Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Sun, 8 Apr 2012 10:01:44 +0000 Subject: ppp: Fix race condition with queue start/stop Commit e675f0cc9a872fd152edc0c77acfed19bf28b81e ("ppp: Don't stop and restart queue on every TX packet") introduced a race condition which could leave the net queue stopped even when the channel is no longer busy. By calling netif_stop_queue() from ppp_start_xmit(), based on the return value from ppp_xmit_process() but *after* all the locks have been dropped, we could potentially do so *after* the channel has actually finished transmitting and attempted to re-wake the queue. Fix this by moving the netif_stop_queue() into ppp_xmit_process() under the xmit lock. I hadn't done this previously, because it gets called from other places than ppp_start_xmit(). But I now think it's the better option. The net queue *should* be stopped if the channel becomes congested due to writes from pppd, anyway. Signed-off-by: David Woodhouse Signed-off-by: David S. Miller --- drivers/net/ppp/ppp_generic.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c index 33f8c51..21d7151 100644 --- a/drivers/net/ppp/ppp_generic.c +++ b/drivers/net/ppp/ppp_generic.c @@ -235,7 +235,7 @@ struct ppp_net { /* Prototypes. */ static int ppp_unattached_ioctl(struct net *net, struct ppp_file *pf, struct file *file, unsigned int cmd, unsigned long arg); -static int ppp_xmit_process(struct ppp *ppp); +static void ppp_xmit_process(struct ppp *ppp); static void ppp_send_frame(struct ppp *ppp, struct sk_buff *skb); static void ppp_push(struct ppp *ppp); static void ppp_channel_push(struct channel *pch); @@ -969,8 +969,7 @@ ppp_start_xmit(struct sk_buff *skb, struct net_device *dev) put_unaligned_be16(proto, pp); skb_queue_tail(&ppp->file.xq, skb); - if (!ppp_xmit_process(ppp)) - netif_stop_queue(dev); + ppp_xmit_process(ppp); return NETDEV_TX_OK; outf: @@ -1048,11 +1047,10 @@ static void ppp_setup(struct net_device *dev) * Called to do any work queued up on the transmit side * that can now be done. */ -static int +static void ppp_xmit_process(struct ppp *ppp) { struct sk_buff *skb; - int ret = 0; ppp_xmit_lock(ppp); if (!ppp->closing) { @@ -1062,13 +1060,12 @@ ppp_xmit_process(struct ppp *ppp) ppp_send_frame(ppp, skb); /* If there's no work left to do, tell the core net code that we can accept some more. */ - if (!ppp->xmit_pending && !skb_peek(&ppp->file.xq)) { + if (!ppp->xmit_pending && !skb_peek(&ppp->file.xq)) netif_wake_queue(ppp->dev); - ret = 1; - } + else + netif_stop_queue(ppp->dev); } ppp_xmit_unlock(ppp); - return ret; } static inline struct sk_buff * -- cgit v1.1 From ca8f4fb21d08747013cce9cf1840aa5bfc31f2d8 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Mon, 9 Apr 2012 00:24:02 +0000 Subject: skbuff: struct ubuf_info callback type safety The skb struct ubuf_info callback gets passed struct ubuf_info itself, not the arg value as the field name and the function signature seem to imply. Rename the arg field to ctx to match usage, add documentation and change the callback argument type to make usage clear and to have compiler check correctness. Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- drivers/vhost/net.c | 2 +- drivers/vhost/vhost.c | 5 ++--- drivers/vhost/vhost.h | 2 +- include/linux/skbuff.h | 7 ++++--- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index f0da2c3..1f21d2a 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -238,7 +238,7 @@ static void handle_tx(struct vhost_net *net) vq->heads[vq->upend_idx].len = len; ubuf->callback = vhost_zerocopy_callback; - ubuf->arg = vq->ubufs; + ubuf->ctx = vq->ubufs; ubuf->desc = vq->upend_idx; msg.msg_control = ubuf; msg.msg_controllen = sizeof(ubuf); diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 947f00d..51e4c1e 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -1598,10 +1598,9 @@ void vhost_ubuf_put_and_wait(struct vhost_ubuf_ref *ubufs) kfree(ubufs); } -void vhost_zerocopy_callback(void *arg) +void vhost_zerocopy_callback(struct ubuf_info *ubuf) { - struct ubuf_info *ubuf = arg; - struct vhost_ubuf_ref *ubufs = ubuf->arg; + struct vhost_ubuf_ref *ubufs = ubuf->ctx; struct vhost_virtqueue *vq = ubufs->vq; /* set len = 1 to mark this desc buffers done DMA */ diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index 8dcf4cc..8de1fd5 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -188,7 +188,7 @@ bool vhost_enable_notify(struct vhost_dev *, struct vhost_virtqueue *); int vhost_log_write(struct vhost_virtqueue *vq, struct vhost_log *log, unsigned int log_num, u64 len); -void vhost_zerocopy_callback(void *arg); +void vhost_zerocopy_callback(struct ubuf_info *); int vhost_zerocopy_signal_used(struct vhost_virtqueue *vq); #define vq_err(vq, fmt, ...) do { \ diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 70a3f8d..775292a 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -238,11 +238,12 @@ enum { /* * The callback notifies userspace to release buffers when skb DMA is done in * lower device, the skb last reference should be 0 when calling this. - * The desc is used to track userspace buffer index. + * The ctx field is used to track device context. + * The desc field is used to track userspace buffer index. */ struct ubuf_info { - void (*callback)(void *); - void *arg; + void (*callback)(struct ubuf_info *); + void *ctx; unsigned long desc; }; -- cgit v1.1 From 03662e41c7cff64a776bfb1b3816de4be43de881 Mon Sep 17 00:00:00 2001 From: Tony Zelenoff Date: Wed, 11 Apr 2012 06:15:03 +0000 Subject: atl1: fix kernel panic in case of DMA errors Problem: There was two separate work_struct structures which share one handler. Unfortunately getting atl1_adapter structure from work_struct in case of DMA error was done from incorrect offset which cause kernel panics. Solution: The useless work_struct for DMA error removed and handler name changed to more generic one. Signed-off-by: Tony Zelenoff Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/atlx/atl1.c | 12 +++++------- drivers/net/ethernet/atheros/atlx/atl1.h | 3 +-- drivers/net/ethernet/atheros/atlx/atlx.c | 2 +- 3 files changed, 7 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/atheros/atlx/atl1.c b/drivers/net/ethernet/atheros/atlx/atl1.c index 40ac414..c926857 100644 --- a/drivers/net/ethernet/atheros/atlx/atl1.c +++ b/drivers/net/ethernet/atheros/atlx/atl1.c @@ -2476,7 +2476,7 @@ static irqreturn_t atl1_intr(int irq, void *data) "pcie phy link down %x\n", status); if (netif_running(adapter->netdev)) { /* reset MAC */ iowrite32(0, adapter->hw.hw_addr + REG_IMR); - schedule_work(&adapter->pcie_dma_to_rst_task); + schedule_work(&adapter->reset_dev_task); return IRQ_HANDLED; } } @@ -2488,7 +2488,7 @@ static irqreturn_t atl1_intr(int irq, void *data) "pcie DMA r/w error (status = 0x%x)\n", status); iowrite32(0, adapter->hw.hw_addr + REG_IMR); - schedule_work(&adapter->pcie_dma_to_rst_task); + schedule_work(&adapter->reset_dev_task); return IRQ_HANDLED; } @@ -2633,10 +2633,10 @@ static void atl1_down(struct atl1_adapter *adapter) atl1_clean_rx_ring(adapter); } -static void atl1_tx_timeout_task(struct work_struct *work) +static void atl1_reset_dev_task(struct work_struct *work) { struct atl1_adapter *adapter = - container_of(work, struct atl1_adapter, tx_timeout_task); + container_of(work, struct atl1_adapter, reset_dev_task); struct net_device *netdev = adapter->netdev; netif_device_detach(netdev); @@ -3038,12 +3038,10 @@ static int __devinit atl1_probe(struct pci_dev *pdev, (unsigned long)adapter); adapter->phy_timer_pending = false; - INIT_WORK(&adapter->tx_timeout_task, atl1_tx_timeout_task); + INIT_WORK(&adapter->reset_dev_task, atl1_reset_dev_task); INIT_WORK(&adapter->link_chg_task, atlx_link_chg_task); - INIT_WORK(&adapter->pcie_dma_to_rst_task, atl1_tx_timeout_task); - err = register_netdev(netdev); if (err) goto err_common; diff --git a/drivers/net/ethernet/atheros/atlx/atl1.h b/drivers/net/ethernet/atheros/atlx/atl1.h index 109d6da..e04bf4d 100644 --- a/drivers/net/ethernet/atheros/atlx/atl1.h +++ b/drivers/net/ethernet/atheros/atlx/atl1.h @@ -758,9 +758,8 @@ struct atl1_adapter { u16 link_speed; u16 link_duplex; spinlock_t lock; - struct work_struct tx_timeout_task; + struct work_struct reset_dev_task; struct work_struct link_chg_task; - struct work_struct pcie_dma_to_rst_task; struct timer_list phy_config_timer; bool phy_timer_pending; diff --git a/drivers/net/ethernet/atheros/atlx/atlx.c b/drivers/net/ethernet/atheros/atlx/atlx.c index 3cd8837..c9e9dc5 100644 --- a/drivers/net/ethernet/atheros/atlx/atlx.c +++ b/drivers/net/ethernet/atheros/atlx/atlx.c @@ -194,7 +194,7 @@ static void atlx_tx_timeout(struct net_device *netdev) { struct atlx_adapter *adapter = netdev_priv(netdev); /* Do the reset outside of interrupt context */ - schedule_work(&adapter->tx_timeout_task); + schedule_work(&adapter->reset_dev_task); } /* -- cgit v1.1 From a8c9cb106fe79c28d6b7f1397652cadd228715ff Mon Sep 17 00:00:00 2001 From: Jason Wang Date: Wed, 11 Apr 2012 22:10:54 +0000 Subject: 8139cp: set intr mask after its handler is registered We set intr mask before its handler is registered, this does not work well when 8139cp is sharing irq line with other devices. As the irq could be enabled by the device before 8139cp's hander is registered which may lead unhandled irq. Fix this by introducing an helper cp_irq_enable() and call it after request_irq(). Signed-off-by: Jason Wang Reviewed-by: Flavio Leitner Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/8139cp.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c index abc7907..b3287c0 100644 --- a/drivers/net/ethernet/realtek/8139cp.c +++ b/drivers/net/ethernet/realtek/8139cp.c @@ -958,6 +958,11 @@ static inline void cp_start_hw (struct cp_private *cp) cpw8(Cmd, RxOn | TxOn); } +static void cp_enable_irq(struct cp_private *cp) +{ + cpw16_f(IntrMask, cp_intr_mask); +} + static void cp_init_hw (struct cp_private *cp) { struct net_device *dev = cp->dev; @@ -997,8 +1002,6 @@ static void cp_init_hw (struct cp_private *cp) cpw16(MultiIntr, 0); - cpw16_f(IntrMask, cp_intr_mask); - cpw8_f(Cfg9346, Cfg9346_Lock); } @@ -1130,6 +1133,8 @@ static int cp_open (struct net_device *dev) if (rc) goto err_out_hw; + cp_enable_irq(cp); + netif_carrier_off(dev); mii_check_media(&cp->mii_if, netif_msg_link(cp), true); netif_start_queue(dev); @@ -2031,6 +2036,7 @@ static int cp_resume (struct pci_dev *pdev) /* FIXME: sh*t may happen if the Rx ring buffer is depleted */ cp_init_rings_index (cp); cp_init_hw (cp); + cp_enable_irq(cp); netif_start_queue (dev); spin_lock_irqsave (&cp->lock, flags); -- cgit v1.1 From 59a54f3082b9847c1240e24879750e3a03f96754 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Thu, 12 Apr 2012 01:11:12 +0000 Subject: drivers/net/ethernet/xilinx/axi ethernet: Correct Copyright Also fix MAINTAINERS file to reflect autorship. Daniel and Ariane changed coding style but not any functional changes in the driver itself. Signed-off-by: Michal Simek Signed-off-by: David S. Miller --- MAINTAINERS | 4 ++-- drivers/net/ethernet/xilinx/xilinx_axienet.h | 4 +--- drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 6 +++--- drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c | 6 +++--- 4 files changed, 9 insertions(+), 11 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 32671e0..7cef7be 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -7577,8 +7577,8 @@ F: Documentation/filesystems/xfs.txt F: fs/xfs/ XILINX AXI ETHERNET DRIVER -M: Ariane Keller -M: Daniel Borkmann +M: Anirudha Sarangi +M: John Linn S: Maintained F: drivers/net/ethernet/xilinx/xilinx_axienet* diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet.h b/drivers/net/ethernet/xilinx/xilinx_axienet.h index cc83af0..44b8d2b 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet.h +++ b/drivers/net/ethernet/xilinx/xilinx_axienet.h @@ -2,9 +2,7 @@ * Definitions for Xilinx Axi Ethernet device driver. * * Copyright (c) 2009 Secret Lab Technologies, Ltd. - * Copyright (c) 2010 Xilinx, Inc. All rights reserved. - * Copyright (c) 2012 Daniel Borkmann, - * Copyright (c) 2012 Ariane Keller, + * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. */ #ifndef XILINX_AXIENET_H diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c index 2fcbeba..9c365e1 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c @@ -4,9 +4,9 @@ * Copyright (c) 2008 Nissin Systems Co., Ltd., Yoshio Kashiwagi * Copyright (c) 2005-2008 DLA Systems, David H. Lynch Jr. * Copyright (c) 2008-2009 Secret Lab Technologies Ltd. - * Copyright (c) 2010 Xilinx, Inc. All rights reserved. - * Copyright (c) 2012 Daniel Borkmann, - * Copyright (c) 2012 Ariane Keller, + * Copyright (c) 2010 - 2011 Michal Simek + * Copyright (c) 2010 - 2011 PetaLogix + * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. * * This is a driver for the Xilinx Axi Ethernet which is used in the Virtex6 * and Spartan6. diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c index d70b6e7..e90e1f4 100644 --- a/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c +++ b/drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c @@ -2,9 +2,9 @@ * MDIO bus driver for the Xilinx Axi Ethernet device * * Copyright (c) 2009 Secret Lab Technologies, Ltd. - * Copyright (c) 2010 Xilinx, Inc. All rights reserved. - * Copyright (c) 2012 Daniel Borkmann, - * Copyright (c) 2012 Ariane Keller, + * Copyright (c) 2010 - 2011 Michal Simek + * Copyright (c) 2010 - 2011 PetaLogix + * Copyright (c) 2010 - 2012 Xilinx, Inc. All rights reserved. */ #include -- cgit v1.1 From 51c61a2838c33dab7b6659b9a3e008bb1b40bc9b Mon Sep 17 00:00:00 2001 From: Matt Renzelmann Date: Fri, 13 Apr 2012 07:59:40 +0000 Subject: ks8851: Fix missing mutex_lock/unlock Move the ks8851_rdreg16 call above the call to request_irq and cache the result for subsequent repeated use. A spurious interrupt may otherwise cause a crash. Thanks to Stephen Boyd, Flavio Leitner, and Ben Hutchings for feedback. Signed-off-by: Matt Renzelmann Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index c722aa6..e5dc075 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -1418,6 +1418,7 @@ static int __devinit ks8851_probe(struct spi_device *spi) struct net_device *ndev; struct ks8851_net *ks; int ret; + unsigned cider; ndev = alloc_etherdev(sizeof(struct ks8851_net)); if (!ndev) @@ -1484,8 +1485,8 @@ static int __devinit ks8851_probe(struct spi_device *spi) ks8851_soft_reset(ks, GRR_GSR); /* simple check for a valid chip being connected to the bus */ - - if ((ks8851_rdreg16(ks, KS_CIDER) & ~CIDER_REV_MASK) != CIDER_ID) { + cider = ks8851_rdreg16(ks, KS_CIDER); + if ((cider & ~CIDER_REV_MASK) != CIDER_ID) { dev_err(&spi->dev, "failed to read device ID\n"); ret = -ENODEV; goto err_id; @@ -1516,8 +1517,7 @@ static int __devinit ks8851_probe(struct spi_device *spi) } netdev_info(ndev, "revision %d, MAC %pM, IRQ %d, %s EEPROM\n", - CIDER_REV_GET(ks8851_rdreg16(ks, KS_CIDER)), - ndev->dev_addr, ndev->irq, + CIDER_REV_GET(cider), ndev->dev_addr, ndev->irq, ks->rc_ccr & CCR_EEPROM ? "has" : "no"); return 0; -- cgit v1.1 From effcc625eb4ab3b10b4744237fd37e8f7dcd6511 Mon Sep 17 00:00:00 2001 From: Amitkumar Karwar Date: Wed, 28 Mar 2012 11:38:01 -0700 Subject: libertas: fix signedness bug in lbs_auth_to_authtype() Return type for lbs_auth_to_authtype() is changed from "u8" to "int" to return negative error code correctly. Also an error check is added in connect handler for invalid auth type. Reported-by: Dan Carpenter Signed-off-by: Amitkumar Karwar Signed-off-by: Kiran Divekar Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/cfg.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c index 3fa1ece..2fa879b 100644 --- a/drivers/net/wireless/libertas/cfg.c +++ b/drivers/net/wireless/libertas/cfg.c @@ -103,7 +103,7 @@ static const u32 cipher_suites[] = { * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1 * in the firmware spec */ -static u8 lbs_auth_to_authtype(enum nl80211_auth_type auth_type) +static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type) { int ret = -ENOTSUPP; @@ -1411,7 +1411,12 @@ static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev, goto done; } - lbs_set_authtype(priv, sme); + ret = lbs_set_authtype(priv, sme); + if (ret == -ENOTSUPP) { + wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type); + goto done; + } + lbs_set_radio(priv, preamble, 1); /* Do the actual association */ -- cgit v1.1 From badc4f07622f0f7093a201638f45e85765f1b5e4 Mon Sep 17 00:00:00 2001 From: Arend van Spriel Date: Wed, 11 Apr 2012 11:52:51 +0200 Subject: brcm80211: smac: resume transmit fifo upon receiving frames There have been reports about not being able to use access-points on channel 12 and 13 or having connectivity issues when these channels were part of the selected regulatory domain. Upon switching to these channels the brcmsmac driver suspends the transmit dma fifos. This patch resumes them upon handing over the first received beacon to mac80211. This patch is to be applied to the stable tree for kernel versions 3.2 and 3.3. Cc: stable@vger.kernel.org Tested-by: Francesco Saverio Schiavarelli Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Brett Rudley Signed-off-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmsmac/main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index 231ddf4..7083db7 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c @@ -7614,6 +7614,7 @@ brcms_c_recvctl(struct brcms_c_info *wlc, struct d11rxhdr *rxh, { int len_mpdu; struct ieee80211_rx_status rx_status; + struct ieee80211_hdr *hdr; memset(&rx_status, 0, sizeof(rx_status)); prep_mac80211_status(wlc, rxh, p, &rx_status); @@ -7623,6 +7624,13 @@ brcms_c_recvctl(struct brcms_c_info *wlc, struct d11rxhdr *rxh, skb_pull(p, D11_PHY_HDR_LEN); __skb_trim(p, len_mpdu); + /* unmute transmit */ + if (wlc->hw->suspended_fifos) { + hdr = (struct ieee80211_hdr *)p->data; + if (ieee80211_is_beacon(hdr->frame_control)) + brcms_b_mute(wlc->hw, false); + } + memcpy(IEEE80211_SKB_RXCB(p), &rx_status, sizeof(rx_status)); ieee80211_rx_irqsafe(wlc->pub->ieee_hw, p); } -- cgit v1.1 From e55a4046dab28c440c96890bdddcf02dc8981f2d Mon Sep 17 00:00:00 2001 From: Lukasz Kucharczyk Date: Wed, 11 Apr 2012 14:55:10 +0200 Subject: cfg80211: fix interface combinations check. Signed-off-by: Lukasz Kucharczyk Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- net/wireless/util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/wireless/util.c b/net/wireless/util.c index 1b7a08df..957f2562 100644 --- a/net/wireless/util.c +++ b/net/wireless/util.c @@ -989,7 +989,7 @@ int cfg80211_can_change_interface(struct cfg80211_registered_device *rdev, if (rdev->wiphy.software_iftypes & BIT(iftype)) continue; for (j = 0; j < c->n_limits; j++) { - if (!(limits[j].types & iftype)) + if (!(limits[j].types & BIT(iftype))) continue; if (limits[j].max < num[iftype]) goto cont; -- cgit v1.1 From 32b92f4f3f261697a49f944e31920dbcbbd4ad01 Mon Sep 17 00:00:00 2001 From: Jonathan Bither Date: Thu, 12 Apr 2012 06:13:33 -0400 Subject: ath5k: fix undefined 'THIS_MODULE' When cross compiling ath5k for a Mips machine with kernel 3.2.14 the compilation fails with "/ath5k/ahb.c:231:12: error: 'THIS_MODULE' undeclared here (not in a function)" Fix the build by including Signed-off-by: Jonathan Bither Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/ahb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath5k/ahb.c b/drivers/net/wireless/ath/ath5k/ahb.c index 8faa129..47b6c35 100644 --- a/drivers/net/wireless/ath/ath5k/ahb.c +++ b/drivers/net/wireless/ath/ath5k/ahb.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include "ath5k.h" #include "debug.h" -- cgit v1.1 From 2db0d2ba97801fb57c91e99b9e22b2a24c32d3d7 Mon Sep 17 00:00:00 2001 From: Jonathan Bither Date: Thu, 12 Apr 2012 07:03:09 -0400 Subject: ath5k: unmap io memory on probe failure Signed-off-by: Jonathan Bither Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/ahb.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath5k/ahb.c b/drivers/net/wireless/ath/ath5k/ahb.c index 47b6c35..8c50d9d 100644 --- a/drivers/net/wireless/ath/ath5k/ahb.c +++ b/drivers/net/wireless/ath/ath5k/ahb.c @@ -120,7 +120,7 @@ static int ath_ahb_probe(struct platform_device *pdev) if (res == NULL) { dev_err(&pdev->dev, "no IRQ resource found\n"); ret = -ENXIO; - goto err_out; + goto err_iounmap; } irq = res->start; @@ -129,7 +129,7 @@ static int ath_ahb_probe(struct platform_device *pdev) if (hw == NULL) { dev_err(&pdev->dev, "no memory for ieee80211_hw\n"); ret = -ENOMEM; - goto err_out; + goto err_iounmap; } ah = hw->priv; @@ -186,6 +186,8 @@ static int ath_ahb_probe(struct platform_device *pdev) err_free_hw: ieee80211_free_hw(hw); platform_set_drvdata(pdev, NULL); + err_iounmap: + iounmap(mem); err_out: return ret; } -- cgit v1.1 From 75600abf1991657580233570400009e85f861787 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Thu, 12 Apr 2012 20:36:31 +0200 Subject: ath9k: wake up the hardware from full sleep when idle is turned off The hardware needs a reset to recover from full sleep. Issue this reset directly in the ath9k_config call that turns off idle, otherwise tx remains dead until the first channel change after the idle state change Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/main.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index 2504ab0..798ea57 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -1548,6 +1548,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) struct ath_hw *ah = sc->sc_ah; struct ath_common *common = ath9k_hw_common(ah); struct ieee80211_conf *conf = &hw->conf; + bool reset_channel = false; ath9k_ps_wakeup(sc); mutex_lock(&sc->mutex); @@ -1556,6 +1557,12 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); if (sc->ps_idle) ath_cancel_work(sc); + else + /* + * The chip needs a reset to properly wake up from + * full sleep + */ + reset_channel = ah->chip_fullsleep; } /* @@ -1584,7 +1591,7 @@ static int ath9k_config(struct ieee80211_hw *hw, u32 changed) } } - if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) || reset_channel) { struct ieee80211_channel *curchan = hw->conf.channel; int pos = curchan->hw_value; int old_pos = -1; -- cgit v1.1 From 428ca8a7065354877db63ceabfc493107686eebe Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Thu, 12 Apr 2012 19:00:35 -0700 Subject: mwifiex: update pcie8766 scratch register addresses The scratch register addresses have been changed for newer chips. Since the old chip was never shipped and it will not be supported any more, just update register addresses to support the new chips. Cc: # 3.2.y, 3.3.y Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/pcie.h | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/net/wireless/mwifiex/pcie.h b/drivers/net/wireless/mwifiex/pcie.h index 445ff21..2f218f9 100644 --- a/drivers/net/wireless/mwifiex/pcie.h +++ b/drivers/net/wireless/mwifiex/pcie.h @@ -48,15 +48,15 @@ #define PCIE_HOST_INT_STATUS_MASK 0xC3C #define PCIE_SCRATCH_2_REG 0xC40 #define PCIE_SCRATCH_3_REG 0xC44 -#define PCIE_SCRATCH_4_REG 0xCC0 -#define PCIE_SCRATCH_5_REG 0xCC4 -#define PCIE_SCRATCH_6_REG 0xCC8 -#define PCIE_SCRATCH_7_REG 0xCCC -#define PCIE_SCRATCH_8_REG 0xCD0 -#define PCIE_SCRATCH_9_REG 0xCD4 -#define PCIE_SCRATCH_10_REG 0xCD8 -#define PCIE_SCRATCH_11_REG 0xCDC -#define PCIE_SCRATCH_12_REG 0xCE0 +#define PCIE_SCRATCH_4_REG 0xCD0 +#define PCIE_SCRATCH_5_REG 0xCD4 +#define PCIE_SCRATCH_6_REG 0xCD8 +#define PCIE_SCRATCH_7_REG 0xCDC +#define PCIE_SCRATCH_8_REG 0xCE0 +#define PCIE_SCRATCH_9_REG 0xCE4 +#define PCIE_SCRATCH_10_REG 0xCE8 +#define PCIE_SCRATCH_11_REG 0xCEC +#define PCIE_SCRATCH_12_REG 0xCF0 #define CPU_INTR_DNLD_RDY BIT(0) #define CPU_INTR_DOOR_BELL BIT(1) -- cgit v1.1 From 3c5e979bd037888dd7d722da22da4b43659af485 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Thu, 12 Apr 2012 05:54:09 +0000 Subject: net: smsc911x: fix skb handling in receive path The SMSC911x driver resets the ->head, ->data and ->tail pointers in the skb on the reset path in order to avoid buffer overflow due to packet padding performed by the hardware. This patch fixes the receive path so that the skb pointers are fixed up after the data has been read from the device, The error path is also fixed to use number of words consistently and prevent erroneous FIFO fastforwarding when skipping over bad data. Signed-off-by: Will Deacon Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 4a69710..5aa2dbe 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -1166,10 +1166,8 @@ smsc911x_rx_counterrors(struct net_device *dev, unsigned int rxstat) /* Quickly dumps bad packets */ static void -smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktbytes) +smsc911x_rx_fastforward(struct smsc911x_data *pdata, unsigned int pktwords) { - unsigned int pktwords = (pktbytes + NET_IP_ALIGN + 3) >> 2; - if (likely(pktwords >= 4)) { unsigned int timeout = 500; unsigned int val; @@ -1233,7 +1231,7 @@ static int smsc911x_poll(struct napi_struct *napi, int budget) continue; } - skb = netdev_alloc_skb(dev, pktlength + NET_IP_ALIGN); + skb = netdev_alloc_skb(dev, pktwords << 2); if (unlikely(!skb)) { SMSC_WARN(pdata, rx_err, "Unable to allocate skb for rx packet"); @@ -1243,14 +1241,12 @@ static int smsc911x_poll(struct napi_struct *napi, int budget) break; } - skb->data = skb->head; - skb_reset_tail_pointer(skb); + pdata->ops->rx_readfifo(pdata, + (unsigned int *)skb->data, pktwords); /* Align IP on 16B boundary */ skb_reserve(skb, NET_IP_ALIGN); skb_put(skb, pktlength - 4); - pdata->ops->rx_readfifo(pdata, - (unsigned int *)skb->head, pktwords); skb->protocol = eth_type_trans(skb, dev); skb_checksum_none_assert(skb); netif_receive_skb(skb); @@ -1565,7 +1561,7 @@ static int smsc911x_open(struct net_device *dev) smsc911x_reg_write(pdata, FIFO_INT, temp); /* set RX Data offset to 2 bytes for alignment */ - smsc911x_reg_write(pdata, RX_CFG, (2 << 8)); + smsc911x_reg_write(pdata, RX_CFG, (NET_IP_ALIGN << 8)); /* enable NAPI polling before enabling RX interrupts */ napi_enable(&pdata->napi); -- cgit v1.1 From 6e48b550d1f5f1919e6500547ae14a73fbf66c7b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Fri, 13 Apr 2012 09:52:59 +0100 Subject: tracing: Fix build breakage without CONFIG_PERF_EVENTS (again) Today's -next fails to link for me: kernel/built-in.o:(.data+0x178e50): undefined reference to `perf_ftrace_event_register' It looks like multiple fixes have been merged for the issue fixed by commit fa73dc9 (tracing: Fix build breakage without CONFIG_PERF_EVENTS) though I can't identify the other changes that have gone in at the minute, it's possible that the changes which caused the breakage fixed by the previous commit got dropped but the fix made it in. Link: http://lkml.kernel.org/r/1334307179-21255-1-git-send-email-broonie@opensource.wolfsonmicro.com Cc: Frederic Weisbecker Cc: Ingo Molnar Signed-off-by: Mark Brown Signed-off-by: Steven Rostedt --- kernel/trace/trace.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 95059f0..f95d65d 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -836,11 +836,11 @@ extern const char *__stop___trace_bprintk_fmt[]; filter) #include "trace_entries.h" -#ifdef CONFIG_FUNCTION_TRACER +#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_FUNCTION_TRACER) int perf_ftrace_event_register(struct ftrace_event_call *call, enum trace_reg type, void *data); #else #define perf_ftrace_event_register NULL -#endif /* CONFIG_FUNCTION_TRACER */ +#endif #endif /* _LINUX_KERNEL_TRACE_H */ -- cgit v1.1 From 92fe173391b3e0d0a7212fa8b9d72c8d61f31c26 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Thu, 12 Apr 2012 06:27:03 +0000 Subject: e1000e: issues in Sx on 82577/8/9 A workaround was previously put in the driver to reset the device when transitioning to Sx in order to activate the changed settings of the PHY OEM bits (Low Power Link Up, or LPLU, and GbE disable configuration) for 82577/8/9 devices. After further review, it was found such a reset can cause the 82579 to confuse which version of 82579 it actually is and broke LPLU on all 82577/8/9 devices. The workaround during an S0->Sx transition on 82579 (instead of resetting the PHY) is to restart auto-negotiation after the OEM bits are configured; the restart of auto-negotiation activates the new OEM bits as does the reset. With 82577/8, the reset is changed to a generic reset which fixes the LPLU bits getting set wrong. Signed-off-by: Bruce Allan Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/ich8lan.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/ich8lan.c b/drivers/net/ethernet/intel/e1000e/ich8lan.c index 64c7644..b461c24 100644 --- a/drivers/net/ethernet/intel/e1000e/ich8lan.c +++ b/drivers/net/ethernet/intel/e1000e/ich8lan.c @@ -1310,10 +1310,6 @@ static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state) if (mac_reg & E1000_PHY_CTRL_D0A_LPLU) oem_reg |= HV_OEM_BITS_LPLU; - - /* Set Restart auto-neg to activate the bits */ - if (!hw->phy.ops.check_reset_block(hw)) - oem_reg |= HV_OEM_BITS_RESTART_AN; } else { if (mac_reg & (E1000_PHY_CTRL_GBE_DISABLE | E1000_PHY_CTRL_NOND0A_GBE_DISABLE)) @@ -1324,6 +1320,11 @@ static s32 e1000_oem_bits_config_ich8lan(struct e1000_hw *hw, bool d0_state) oem_reg |= HV_OEM_BITS_LPLU; } + /* Set Restart auto-neg to activate the bits */ + if ((d0_state || (hw->mac.type != e1000_pchlan)) && + !hw->phy.ops.check_reset_block(hw)) + oem_reg |= HV_OEM_BITS_RESTART_AN; + ret_val = hw->phy.ops.write_reg_locked(hw, HV_OEM_BITS, oem_reg); release: @@ -3682,7 +3683,11 @@ void e1000_suspend_workarounds_ich8lan(struct e1000_hw *hw) if (hw->mac.type >= e1000_pchlan) { e1000_oem_bits_config_ich8lan(hw, false); - e1000_phy_hw_reset_ich8lan(hw); + + /* Reset PHY to activate OEM bits on 82577/8 */ + if (hw->mac.type == e1000_pchlan) + e1000e_phy_hw_reset_generic(hw); + ret_val = hw->phy.ops.acquire(hw); if (ret_val) return; -- cgit v1.1 From c509e754af96882eb46130e215cc4aa8f763d4ac Mon Sep 17 00:00:00 2001 From: Don Skidmore Date: Thu, 5 Apr 2012 08:12:05 +0000 Subject: ixgbe: fix WoL issue with fiber There are times we turn of the laser before shutdown. This is a bad thing if we want to wake on lan to work so now we make sure the laser is on before shutdown if we support WoL. Signed-off-by: Don Skidmore Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 3e26b1f..dac7c01 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4893,6 +4893,16 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) if (wufc) { ixgbe_set_rx_mode(netdev); + /* + * enable the optics for both mult-speed fiber and + * 82599 SFP+ fiber as we can WoL. + */ + if (hw->mac.ops.enable_tx_laser && + (hw->phy.multispeed_fiber || + (hw->mac.ops.get_media_type(hw) == ixgbe_media_type_fiber && + hw->mac.type == ixgbe_mac_82599EB))) + hw->mac.ops.enable_tx_laser(hw); + /* turn on all-multi mode if wake on multicast is enabled */ if (wufc & IXGBE_WUFC_MC) { fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); -- cgit v1.1 From 8a9a0ea6032186e3030419262678d652b88bf6a8 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Fri, 13 Apr 2012 04:48:25 +0000 Subject: net/ethernet: ks8851_mll fix rx frame buffer overflow At the beginning of ks_rcv(), a for loop retrieves the header information relevant to all the frames stored in the mac's internal buffers. The number of pending frames is stored as an 8 bits field in KS_RXFCTR. If interrupts are disabled long enough to allow for more than 32 frames to accumulate in the MAC's internal buffers, a buffer overflow occurs. This patch fixes the problem by making the driver's frame_head_info buffer big enough. Well actually, since the chip appears to have 12K of internal rx buffers and the shortest ethernet frame should be 64 bytes long, maybe the limit could be set to 12*1024/64 = 192 frames, but 255 should be safer. Signed-off-by: Davide Ciminaghi Signed-off-by: Raffaele Recalcati Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851_mll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/micrel/ks8851_mll.c b/drivers/net/ethernet/micrel/ks8851_mll.c index b8104d9..5ffde23 100644 --- a/drivers/net/ethernet/micrel/ks8851_mll.c +++ b/drivers/net/ethernet/micrel/ks8851_mll.c @@ -40,7 +40,7 @@ #define DRV_NAME "ks8851_mll" static u8 KS_DEFAULT_MAC_ADDRESS[] = { 0x00, 0x10, 0xA1, 0x86, 0x95, 0x11 }; -#define MAX_RECV_FRAMES 32 +#define MAX_RECV_FRAMES 255 #define MAX_BUF_SIZE 2048 #define TX_BUF_SIZE 2000 #define RX_BUF_SIZE 2000 -- cgit v1.1 From acb0c7accde75f75afc70f662d045827d5126839 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Wed, 21 Mar 2012 14:17:43 +1000 Subject: m68knommu: remove the unused bootlogo.h processing for 68EZ328 and 68VZ328 The 68EZ328 and 68VZ328 platforms currently try to process their bootlogo.h to make it clean to include in asm files. This is no longer used, the bootlogo.h file is now included only in C code, so remove all the processing code in the 68EZ328 and 68VZ328 Makefiles. Signed-off-by: Greg Ungerer --- arch/m68k/platform/68EZ328/Makefile | 6 ------ arch/m68k/platform/68VZ328/Makefile | 9 ++------- 2 files changed, 2 insertions(+), 13 deletions(-) diff --git a/arch/m68k/platform/68EZ328/Makefile b/arch/m68k/platform/68EZ328/Makefile index ee97735..b44d799 100644 --- a/arch/m68k/platform/68EZ328/Makefile +++ b/arch/m68k/platform/68EZ328/Makefile @@ -3,9 +3,3 @@ # obj-y := config.o - -extra-y := bootlogo.rh - -$(obj)/bootlogo.rh: $(src)/bootlogo.h - perl $(src)/../68328/bootlogo.pl < $(src)/bootlogo.h \ - > $(obj)/bootlogo.rh diff --git a/arch/m68k/platform/68VZ328/Makefile b/arch/m68k/platform/68VZ328/Makefile index 447ffa0..a49d75e 100644 --- a/arch/m68k/platform/68VZ328/Makefile +++ b/arch/m68k/platform/68VZ328/Makefile @@ -3,14 +3,9 @@ # obj-y := config.o -logo-$(UCDIMM) := bootlogo.rh -logo-$(DRAGEN2) := screen.h -extra-y := $(logo-y) - -$(obj)/bootlogo.rh: $(src)/../68EZ328/bootlogo.h - perl $(src)/bootlogo.pl < $(src)/../68328/bootlogo.h > $(obj)/bootlogo.rh +extra-$(DRAGEN2):= screen.h $(obj)/screen.h: $(src)/screen.xbm $(src)/xbm2lcd.pl perl $(src)/xbm2lcd.pl < $(src)/screen.xbm > $(obj)/screen.h -clean-files := $(obj)/screen.h $(obj)/bootlogo.rh +clean-files := $(obj)/screen.h -- cgit v1.1 From 89d786011fcbc89eedca8b6bf9b7c11bbbde350a Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Wed, 21 Mar 2012 14:22:43 +1000 Subject: m68knommu: move and fix the 68VZ328 platform bootlogo.h The 68EZ328/bootlogo.h is not actually used in the 68EZ328 platform code at all. It is used by the 68VZ328 platform code though, so move it to be with the rest of the 68VZ328 platform code. Commit c0e0c89c089f4bd66dbbd1a44da90abe74fe3f02 ("fix broken boot logo inclusion") modified the bootlogo code to not be included in asm code. Modify 68VZ328/bootlogo.h so that the bootlogo bit map is named correctly for direct use in the C code. Signed-off-by: Greg Ungerer --- arch/m68k/platform/68EZ328/bootlogo.h | 3204 --------------------------------- arch/m68k/platform/68VZ328/bootlogo.h | 3204 +++++++++++++++++++++++++++++++++ 2 files changed, 3204 insertions(+), 3204 deletions(-) delete mode 100644 arch/m68k/platform/68EZ328/bootlogo.h create mode 100644 arch/m68k/platform/68VZ328/bootlogo.h diff --git a/arch/m68k/platform/68EZ328/bootlogo.h b/arch/m68k/platform/68EZ328/bootlogo.h deleted file mode 100644 index e842bda..0000000 --- a/arch/m68k/platform/68EZ328/bootlogo.h +++ /dev/null @@ -1,3204 +0,0 @@ -#define splash_width 640 -#define splash_height 480 -static unsigned char splash_bits[] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + }; -- cgit v1.1 From d7de8649f34d45041409d1af4ba4a521971a9075 Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Wed, 11 Apr 2012 17:12:38 +0200 Subject: x86/amd: Remove broken links from comment and kernel message Signed-off-by: Andreas Herrmann Link: http://lkml.kernel.org/r/20120411151238.GA4794@alberich.amd.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/amd.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 0a44b90..1248f9c 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -26,7 +26,8 @@ * contact AMD for precise details and a CPU swap. * * See http://www.multimania.com/poulot/k6bug.html - * http://www.amd.com/K6/k6docs/revgd.html + * and section 2.6.2 of "AMD-K6 Processor Revision Guide - Model 6" + * (Publication # 21266 Issue Date: August 1998) * * The following test is erm.. interesting. AMD neglected to up * the chip setting when fixing the bug but they also tweaked some @@ -94,7 +95,6 @@ static void __cpuinit init_amd_k6(struct cpuinfo_x86 *c) "system stability may be impaired when more than 32 MB are used.\n"); else printk(KERN_CONT "probably OK (after B9730xxxx).\n"); - printk(KERN_INFO "Please see http://membres.lycos.fr/poulot/k6bug.html\n"); } /* K6 with old style WHCR */ -- cgit v1.1 From 97b3b7a0d0703df04e8c6d05c9b6c2fa8868db10 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Fri, 13 Apr 2012 15:08:01 +0200 Subject: ARM: ux500: Fix unmet direct dependency A recent change to a Kconfig configuration saw MACH_U8500 remove TPS6105X selection. In doing so Kconfig stopped selecting REGULATORS, which is still required. This patch sees UX500_SOC_DB8500 explicitly select it instead. Signed-off-by: Lee Jones Signed-off-by: Linus Walleij --- arch/arm/mach-ux500/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-ux500/Kconfig b/arch/arm/mach-ux500/Kconfig index 880d02e..ef7099e 100644 --- a/arch/arm/mach-ux500/Kconfig +++ b/arch/arm/mach-ux500/Kconfig @@ -17,6 +17,7 @@ config UX500_SOC_DB5500 config UX500_SOC_DB8500 bool select MFD_DB8500_PRCMU + select REGULATOR select REGULATOR_DB8500_PRCMU select CPU_FREQ_TABLE if CPU_FREQ -- cgit v1.1 From f27962ac68a9b4cf17958522ecd7c10ce2375ee1 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Fri, 13 Apr 2012 10:18:36 +0200 Subject: ARM: ux500: update defconfig Some new drivers and changed Kconfig dependencies for the v3.4 kernel affecting the U8500 defconfig: - The SOC config options are now brought in by default - No need to explicitly select misc devices anymore - I2C is selected by default - We now have support for charging from the AB8500 so compile in this - The regulator framework needs to be explictly selected Signed-off-by: Linus Walleij --- arch/arm/configs/u8500_defconfig | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig index 889d73a..7e84f45 100644 --- a/arch/arm/configs/u8500_defconfig +++ b/arch/arm/configs/u8500_defconfig @@ -8,8 +8,6 @@ CONFIG_MODULE_UNLOAD=y # CONFIG_LBDAF is not set # CONFIG_BLK_DEV_BSG is not set CONFIG_ARCH_U8500=y -CONFIG_UX500_SOC_DB5500=y -CONFIG_UX500_SOC_DB8500=y CONFIG_MACH_HREFV60=y CONFIG_MACH_SNOWBALL=y CONFIG_MACH_U5500=y @@ -39,7 +37,6 @@ CONFIG_CAIF=y CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=65536 -CONFIG_MISC_DEVICES=y CONFIG_AB8500_PWM=y CONFIG_SENSORS_BH1780=y CONFIG_NETDEVICES=y @@ -65,16 +62,18 @@ CONFIG_SERIAL_AMBA_PL011=y CONFIG_SERIAL_AMBA_PL011_CONSOLE=y CONFIG_HW_RANDOM=y CONFIG_HW_RANDOM_NOMADIK=y -CONFIG_I2C=y -CONFIG_I2C_NOMADIK=y CONFIG_SPI=y CONFIG_SPI_PL022=y CONFIG_GPIO_STMPE=y CONFIG_GPIO_TC3589X=y +CONFIG_POWER_SUPPLY=y +CONFIG_AB8500_BM=y +CONFIG_AB8500_BATTERY_THERM_ON_BATCTRL=y CONFIG_MFD_STMPE=y CONFIG_MFD_TC3589X=y CONFIG_AB5500_CORE=y CONFIG_AB8500_CORE=y +CONFIG_REGULATOR=y CONFIG_REGULATOR_AB8500=y # CONFIG_HID_SUPPORT is not set CONFIG_USB_GADGET=y -- cgit v1.1 From 9fce85c7e4357a93457c8fd2534a1cc1c3055bf5 Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Wed, 4 Apr 2012 19:15:15 +0200 Subject: ARM: at91: Export at91_st_base After commit 5e9cf5e (ARM: at91: make ST (System Timer) soc independent) building at91rm9200_wdt as a module fails with following message ERROR: "at91_st_base" [drivers/watchdog/at91rm9200_wdt.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Export symbol to allow wdt driver to be built as a module again. Signed-off-by: Joachim Eastwood [nicolas.ferre@atmel.com: use EXPORT_SYMBOL_GPL()] Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91rm9200_time.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-at91/at91rm9200_time.c b/arch/arm/mach-at91/at91rm9200_time.c index dd7f782..104ca40 100644 --- a/arch/arm/mach-at91/at91rm9200_time.c +++ b/arch/arm/mach-at91/at91rm9200_time.c @@ -23,6 +23,7 @@ #include #include #include +#include #include @@ -176,6 +177,7 @@ static struct clock_event_device clkevt = { }; void __iomem *at91_st_base; +EXPORT_SYMBOL_GPL(at91_st_base); void __init at91rm9200_ioremap_st(u32 addr) { -- cgit v1.1 From 9268c6c6fab0b27a01afec8268f7c863783541bf Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Fri, 30 Mar 2012 23:03:50 +0200 Subject: ARM: at91: Export at91_ramc_base After commit f363c40 (ARM: at91: make sdram/ddr register base soc independent) building at91_cf as a module fails with: ERROR: "at91_ramc_base" [drivers/pcmcia/at91_cf.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Export at91_ramc_base symbol to allow drivers using at91_ramc_* functions to be built as modules again. Signed-off-by: Joachim Eastwood [nicolas.ferre@atmel.com: modify slightly commit message] Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/setup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index 97cc04d..0607847 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -54,6 +54,7 @@ void __init at91_init_interrupts(unsigned int *priority) } void __iomem *at91_ramc_base[2]; +EXPORT_SYMBOL_GPL(at91_ramc_base); void __init at91_ioremap_ramc(int id, u32 addr, u32 size) { -- cgit v1.1 From f19b797c08017c9b03d81986b2efc4c5cf4bc453 Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Sat, 7 Apr 2012 19:30:22 +0200 Subject: ARM: at91: Export at91_pmc_base After commit b55149529d26 (ARM: at91/PMC: make register base soc independent) building atmel_usba_udc as a module fails with following message ERROR: "at91_pmc_base" [drivers/usb/gadget/atmel_usba_udc.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Export symbol to allow driver to be built as a module again. Signed-off-by: Joachim Eastwood Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/clock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-at91/clock.c b/arch/arm/mach-at91/clock.c index a0f4d74..6b69282 100644 --- a/arch/arm/mach-at91/clock.c +++ b/arch/arm/mach-at91/clock.c @@ -35,6 +35,7 @@ #include "generic.h" void __iomem *at91_pmc_base; +EXPORT_SYMBOL_GPL(at91_pmc_base); /* * There's a lot more which can be done with clocks, including cpufreq -- cgit v1.1 From ac8c411c8360c281d1fb5e03a975e9088d069ded Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Sat, 7 Apr 2012 19:30:23 +0200 Subject: ARM: at91: Export at91_matrix_base at91_matrix_* macro's are used by at91_udc usb gadget driver, which can be built as module, therefore we need to export the variable containing matrix base address. Signed-off-by: Joachim Eastwood Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/setup.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c index 0607847..f44a2e7 100644 --- a/arch/arm/mach-at91/setup.c +++ b/arch/arm/mach-at91/setup.c @@ -293,6 +293,7 @@ void __init at91_ioremap_rstc(u32 base_addr) } void __iomem *at91_matrix_base; +EXPORT_SYMBOL_GPL(at91_matrix_base); void __init at91_ioremap_matrix(u32 base_addr) { -- cgit v1.1 From 67f3af402aebb0098998d3bbebda2fb44aa3a081 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Tue, 10 Apr 2012 14:30:24 +0200 Subject: ARM: at91: fix typo in at91_pmc_base assembly declaration Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/include/mach/at91_pmc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/include/mach/at91_pmc.h b/arch/arm/mach-at91/include/mach/at91_pmc.h index 3660478..ea2c57a 100644 --- a/arch/arm/mach-at91/include/mach/at91_pmc.h +++ b/arch/arm/mach-at91/include/mach/at91_pmc.h @@ -25,7 +25,7 @@ extern void __iomem *at91_pmc_base; #define at91_pmc_write(field, value) \ __raw_writel(value, at91_pmc_base + field) #else -.extern at91_aic_base +.extern at91_pmc_base #endif #define AT91_PMC_SCER 0x00 /* System Clock Enable Register */ -- cgit v1.1 From 926de6d8b90feee26717c01543243b8e07681303 Mon Sep 17 00:00:00 2001 From: Joachim Eastwood Date: Fri, 6 Apr 2012 14:36:19 +0200 Subject: ARM: at91: remove empty at91_init_serial function The real function is long gone and the empty one will generate warnings when configured without Atmel serial: arch/arm/mach-at91/at91rm9200_devices.c:1176: warning: 'struct at91_uart_config' declared inside parameter list arch/arm/mach-at91/at91rm9200_devices.c:1176: warning: its scope is only this definition or declaration, which is probably not what you want Signed-off-by: Joachim Eastwood Signed-off-by: Nicolas Ferre --- arch/arm/mach-at91/at91rm9200_devices.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c index 99ce5c9..05774e5 100644 --- a/arch/arm/mach-at91/at91rm9200_devices.c +++ b/arch/arm/mach-at91/at91rm9200_devices.c @@ -1173,7 +1173,6 @@ void __init at91_add_device_serial(void) printk(KERN_INFO "AT91: No default serial console defined.\n"); } #else -void __init __deprecated at91_init_serial(struct at91_uart_config *config) {} void __init at91_register_uart(unsigned id, unsigned portnr, unsigned pins) {} void __init at91_set_serial_console(unsigned portnr) {} void __init at91_add_device_serial(void) {} -- cgit v1.1 From bf66b0d1dad30cc1241dc4e3ac193251a4694f5c Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Tue, 10 Apr 2012 16:02:31 +0200 Subject: ARM: at91: fix rm9200ek flash size The flash size is 8MiB. Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Nicolas Ferre --- arch/arm/mach-at91/board-rm9200ek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/board-rm9200ek.c b/arch/arm/mach-at91/board-rm9200ek.c index 11cbaa8..b2e4fe2 100644 --- a/arch/arm/mach-at91/board-rm9200ek.c +++ b/arch/arm/mach-at91/board-rm9200ek.c @@ -117,7 +117,7 @@ static struct i2c_board_info __initdata ek_i2c_devices[] = { }; #define EK_FLASH_BASE AT91_CHIPSELECT_0 -#define EK_FLASH_SIZE SZ_2M +#define EK_FLASH_SIZE SZ_8M static struct physmap_flash_data ek_flash_data = { .width = 2, -- cgit v1.1 From ee9dd7631af6fb5c02964ed5b496217cd4ced059 Mon Sep 17 00:00:00 2001 From: Jean-Christophe PLAGNIOL-VILLARD Date: Tue, 10 Apr 2012 17:32:44 +0200 Subject: ARM: at91: fix at91sam9261ek Ethernet dm9000 irq You need to setup the dm9000 irq via gpio_to_irq() since d0fbda9add (ARM: at91/gpio: drop PIN_BASE). Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD Acked-by: Nicolas Ferre Cc: stable [3.2+] --- arch/arm/mach-at91/board-sam9261ek.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-at91/board-sam9261ek.c b/arch/arm/mach-at91/board-sam9261ek.c index c3f9944..065fed3 100644 --- a/arch/arm/mach-at91/board-sam9261ek.c +++ b/arch/arm/mach-at91/board-sam9261ek.c @@ -85,8 +85,6 @@ static struct resource dm9000_resource[] = { .flags = IORESOURCE_MEM }, [2] = { - .start = AT91_PIN_PC11, - .end = AT91_PIN_PC11, .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE | IORESOURCE_IRQ_HIGHEDGE, } @@ -130,6 +128,8 @@ static struct sam9_smc_config __initdata dm9000_smc_config = { static void __init ek_add_device_dm9000(void) { + struct resource *r = &dm9000_resource[2]; + /* Configure chip-select 2 (DM9000) */ sam9_smc_configure(0, 2, &dm9000_smc_config); @@ -139,6 +139,7 @@ static void __init ek_add_device_dm9000(void) /* Configure Interrupt pin as input, no pull-up */ at91_set_gpio_input(AT91_PIN_PC11, 0); + r->start = r->end = gpio_to_irq(AT91_PIN_PC11); platform_device_register(&dm9000_device); } #else -- cgit v1.1 From 745c0ce35f904aeff8e1ea325c259a14a00ff1b7 Mon Sep 17 00:00:00 2001 From: Vishal Agarwal Date: Fri, 13 Apr 2012 17:43:22 +0530 Subject: Bluetooth: hci_persistent_key should return bool This patch changes the return type of function hci_persistent_key from int to bool because it makes more sense to return information whether a key is persistent or not as a bool. Signed-off-by: Vishal Agarwal Acked-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- include/net/bluetooth/hci_core.h | 2 +- net/bluetooth/hci_core.c | 21 +++++++++++---------- net/bluetooth/mgmt.c | 2 +- 3 files changed, 13 insertions(+), 12 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 6822d25..f8577c1 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -980,7 +980,7 @@ int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable); int mgmt_connectable(struct hci_dev *hdev, u8 connectable); int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status); int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, - u8 persistent); + bool persistent); int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, u8 addr_type, u32 flags, u8 *name, u8 name_len, u8 *dev_class); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 2054c13..c2251e4 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1216,40 +1216,40 @@ struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr) return NULL; } -static int hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, +static bool hci_persistent_key(struct hci_dev *hdev, struct hci_conn *conn, u8 key_type, u8 old_key_type) { /* Legacy key */ if (key_type < 0x03) - return 1; + return true; /* Debug keys are insecure so don't store them persistently */ if (key_type == HCI_LK_DEBUG_COMBINATION) - return 0; + return false; /* Changed combination key and there's no previous one */ if (key_type == HCI_LK_CHANGED_COMBINATION && old_key_type == 0xff) - return 0; + return false; /* Security mode 3 case */ if (!conn) - return 1; + return true; /* Neither local nor remote side had no-bonding as requirement */ if (conn->auth_type > 0x01 && conn->remote_auth > 0x01) - return 1; + return true; /* Local side had dedicated bonding as requirement */ if (conn->auth_type == 0x02 || conn->auth_type == 0x03) - return 1; + return true; /* Remote side had dedicated bonding as requirement */ if (conn->remote_auth == 0x02 || conn->remote_auth == 0x03) - return 1; + return true; /* If none of the above criteria match, then don't store the key * persistently */ - return 0; + return false; } struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]) @@ -1286,7 +1286,8 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len) { struct link_key *key, *old_key; - u8 old_key_type, persistent; + u8 old_key_type; + bool persistent; old_key = hci_find_link_key(hdev, bdaddr); if (old_key) { diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 4ef275c..4bb03b1 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -2884,7 +2884,7 @@ int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status) return 0; } -int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, u8 persistent) +int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, bool persistent) { struct mgmt_ev_new_link_key ev; -- cgit v1.1 From 6ec5bcadc21e13ceba8c144e4731eccac01d04f7 Mon Sep 17 00:00:00 2001 From: Vishal Agarwal Date: Mon, 16 Apr 2012 14:44:44 +0530 Subject: Bluetooth: Temporary keys should be retained during connection If a key is non persistent then it should not be used in future connections but it should be kept for current connection. And it should be removed when connecion is removed. Signed-off-by: Vishal Agarwal Acked-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_core.c | 6 ++---- net/bluetooth/hci_event.c | 2 ++ 3 files changed, 5 insertions(+), 4 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index f8577c1..db1c5df 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -314,6 +314,7 @@ struct hci_conn { __u8 remote_cap; __u8 remote_auth; + bool flush_key; unsigned int sent; diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index c2251e4..a7607e4 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -1330,10 +1330,8 @@ int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key, mgmt_new_link_key(hdev, key, persistent); - if (!persistent) { - list_del(&key->list); - kfree(key); - } + if (conn) + conn->flush_key = !persistent; return 0; } diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index badb785..6a72eae 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1902,6 +1902,8 @@ static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff } if (ev->status == 0) { + if (conn->type == ACL_LINK && conn->flush_key) + hci_remove_link_key(hdev, &conn->dst); hci_proto_disconn_cfm(conn, ev->reason); hci_conn_del(conn); } -- cgit v1.1 From 9e755756e4a22784abfb001688357745ea8ca97c Mon Sep 17 00:00:00 2001 From: David Ahern Date: Sun, 15 Apr 2012 20:54:15 -0600 Subject: perf report: Fix crash showing warning related to kernel maps While testing https://lkml.org/lkml/2012/4/10/123 I hit this crash: (gdb) bt 0 0x000000000042000f in __cmd_report (rep=0x7fff80cec580) at builtin-report.c:380 1 cmd_report (argc=0, argv=, prefix=) at builtin-report.c:759 2 0x0000000000414513 in run_builtin (p=0x7724a8, argc=3, argv=0x7fff80ceca70) at perf.c:273 3 0x0000000000413d41 in handle_internal_command (argv=0x7fff80ceca70, argc=3) at perf.c:345 4 run_argv (argv=0x7fff80cec880, argcp=0x7fff80cec88c) at perf.c:389 5 main (argc=3, argv=0x7fff80ceca70) at perf.c:487 kernel_map can be NULL, so need to handle it while dumping a warning to user. v2: - fixed RB_EMPTY_ROOT check -- desc takes the altnerative output when RB_EMPTY_ROOT is false. Signed-off-by: David Ahern Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1334544855-55021-1-git-send-email-dsahern@gmail.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 2e31743..cdae9b2 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -374,16 +374,23 @@ static int __cmd_report(struct perf_report *rep) (kernel_map->dso->hit && (kernel_kmap->ref_reloc_sym == NULL || kernel_kmap->ref_reloc_sym->addr == 0))) { - const struct dso *kdso = kernel_map->dso; + const char *desc = + "As no suitable kallsyms nor vmlinux was found, kernel samples\n" + "can't be resolved."; + + if (kernel_map) { + const struct dso *kdso = kernel_map->dso; + if (!RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION])) { + desc = "If some relocation was applied (e.g. " + "kexec) symbols may be misresolved."; + } + } ui__warning( "Kernel address maps (/proc/{kallsyms,modules}) were restricted.\n\n" "Check /proc/sys/kernel/kptr_restrict before running 'perf record'.\n\n%s\n\n" "Samples in kernel modules can't be resolved as well.\n\n", - RB_EMPTY_ROOT(&kdso->symbols[MAP__FUNCTION]) ? -"As no suitable kallsyms nor vmlinux was found, kernel samples\n" -"can't be resolved." : -"If some relocation was applied (e.g. kexec) symbols may be misresolved."); + desc); } if (dump_trace) { -- cgit v1.1 From 4accdff7a3e397b43e50f605ee561ba7994745c7 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 2 Apr 2012 17:55:48 +0200 Subject: mfd : Fix dbx500 compilation error The ux500 default config enables the db5500 and the db8500. The incoming cpuidle driver uses the 'prcmu_enable_wakeups' and the 'prcmu_set_power_state' functions but these ones are defined but not implemented for the db5500, leading to an unresolved symbol error at link time. In order to compile, we have to disable the db5500 support which is not acceptable for the default config. I noticed there are also some other functions which are defined but not implemented. This patch fix this by removing the functions definitions and move out of the config section the empty functions which are normally used when the DB550 config is disabled. Only the functions which are not implemented are concerned by this modification. Signed-off-by: Daniel Lezcano Acked-by: Linus Walleij Signed-off-by: Samuel Ortiz --- include/linux/mfd/db5500-prcmu.h | 88 +++++++++++++++++----------------------- 1 file changed, 37 insertions(+), 51 deletions(-) diff --git a/include/linux/mfd/db5500-prcmu.h b/include/linux/mfd/db5500-prcmu.h index 9890687..5a049df 100644 --- a/include/linux/mfd/db5500-prcmu.h +++ b/include/linux/mfd/db5500-prcmu.h @@ -8,41 +8,14 @@ #ifndef __MFD_DB5500_PRCMU_H #define __MFD_DB5500_PRCMU_H -#ifdef CONFIG_MFD_DB5500_PRCMU - -void db5500_prcmu_early_init(void); -int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state); -int db5500_prcmu_set_display_clocks(void); -int db5500_prcmu_disable_dsipll(void); -int db5500_prcmu_enable_dsipll(void); -int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size); -int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size); -void db5500_prcmu_enable_wakeups(u32 wakeups); -int db5500_prcmu_request_clock(u8 clock, bool enable); -void db5500_prcmu_config_abb_event_readout(u32 abb_events); -void db5500_prcmu_get_abb_event_buffer(void __iomem **buf); -int prcmu_resetout(u8 resoutn, u8 state); -int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, - bool keep_ap_pll); -int db5500_prcmu_config_esram0_deep_sleep(u8 state); -void db5500_prcmu_system_reset(u16 reset_code); -u16 db5500_prcmu_get_reset_code(void); -bool db5500_prcmu_is_ac_wake_requested(void); -int db5500_prcmu_set_arm_opp(u8 opp); -int db5500_prcmu_get_arm_opp(void); - -#else /* !CONFIG_UX500_SOC_DB5500 */ - -static inline void db5500_prcmu_early_init(void) {} - -static inline int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) +static inline int prcmu_resetout(u8 resoutn, u8 state) { - return -ENOSYS; + return 0; } -static inline int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) +static inline int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state) { - return -ENOSYS; + return 0; } static inline int db5500_prcmu_request_clock(u8 clock, bool enable) @@ -50,69 +23,82 @@ static inline int db5500_prcmu_request_clock(u8 clock, bool enable) return 0; } -static inline int db5500_prcmu_set_display_clocks(void) +static inline int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, + bool keep_ap_pll) { return 0; } -static inline int db5500_prcmu_disable_dsipll(void) +static inline int db5500_prcmu_config_esram0_deep_sleep(u8 state) { return 0; } -static inline int db5500_prcmu_enable_dsipll(void) +static inline u16 db5500_prcmu_get_reset_code(void) { return 0; } -static inline int db5500_prcmu_config_esram0_deep_sleep(u8 state) +static inline bool db5500_prcmu_is_ac_wake_requested(void) { return 0; } -static inline void db5500_prcmu_enable_wakeups(u32 wakeups) {} - -static inline int prcmu_resetout(u8 resoutn, u8 state) +static inline int db5500_prcmu_set_arm_opp(u8 opp) { return 0; } -static inline int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state) +static inline int db5500_prcmu_get_arm_opp(void) { return 0; } -static inline void db5500_prcmu_get_abb_event_buffer(void __iomem **buf) {} static inline void db5500_prcmu_config_abb_event_readout(u32 abb_events) {} -static inline int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, - bool keep_ap_pll) -{ - return 0; -} +static inline void db5500_prcmu_get_abb_event_buffer(void __iomem **buf) {} static inline void db5500_prcmu_system_reset(u16 reset_code) {} -static inline u16 db5500_prcmu_get_reset_code(void) +static inline void db5500_prcmu_enable_wakeups(u32 wakeups) {} + +#ifdef CONFIG_MFD_DB5500_PRCMU + +void db5500_prcmu_early_init(void); +int db5500_prcmu_set_display_clocks(void); +int db5500_prcmu_disable_dsipll(void); +int db5500_prcmu_enable_dsipll(void); +int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size); +int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size); + +#else /* !CONFIG_UX500_SOC_DB5500 */ + +static inline void db5500_prcmu_early_init(void) {} + +static inline int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) { - return 0; + return -ENOSYS; } -static inline bool db5500_prcmu_is_ac_wake_requested(void) +static inline int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) { - return 0; + return -ENOSYS; } -static inline int db5500_prcmu_set_arm_opp(u8 opp) +static inline int db5500_prcmu_set_display_clocks(void) { return 0; } -static inline int db5500_prcmu_get_arm_opp(void) +static inline int db5500_prcmu_disable_dsipll(void) { return 0; } +static inline int db5500_prcmu_enable_dsipll(void) +{ + return 0; +} #endif /* CONFIG_MFD_DB5500_PRCMU */ -- cgit v1.1 From 8eaeb9393397be8eb700ab38a69c450975463b77 Mon Sep 17 00:00:00 2001 From: Peter Ujfalusi Date: Tue, 3 Apr 2012 11:56:51 +0300 Subject: mfd: Convert twl6040 to i2c driver, and separate it from twl core Complete the separation of the twl6040 from the twl core since it is a separate chip, not part of the twl6030 PMIC. Make the needed Kconfig changes for the depending drivers at the same time to avoid breaking the kernel build (vibra, ASoC components). Signed-off-by: Peter Ujfalusi Reviewed-by: Mark Brown Acked-by: Tony Lindgren Acked-by: Dmitry Torokhov Signed-off-by: Samuel Ortiz --- arch/arm/mach-omap2/board-4430sdp.c | 12 ++-- arch/arm/mach-omap2/board-generic.c | 2 +- arch/arm/mach-omap2/board-omap4panda.c | 13 ++-- arch/arm/mach-omap2/twl-common.c | 37 +++++++++-- arch/arm/mach-omap2/twl-common.h | 10 ++- drivers/input/misc/Kconfig | 3 +- drivers/input/misc/twl6040-vibra.c | 4 +- drivers/mfd/Kconfig | 11 +++- drivers/mfd/twl6040-core.c | 114 ++++++++++++++++++++------------- include/linux/i2c/twl.h | 12 ---- include/linux/mfd/twl6040.h | 27 ++++++++ sound/soc/codecs/Kconfig | 3 +- sound/soc/codecs/twl6040.c | 3 +- sound/soc/omap/Kconfig | 2 +- 14 files changed, 159 insertions(+), 94 deletions(-) diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c index a39fc4b..130ab00 100644 --- a/arch/arm/mach-omap2/board-4430sdp.c +++ b/arch/arm/mach-omap2/board-4430sdp.c @@ -20,6 +20,7 @@ #include #include #include +#include #include #include #include @@ -560,7 +561,7 @@ static struct regulator_init_data sdp4430_vusim = { }, }; -static struct twl4030_codec_data twl6040_codec = { +static struct twl6040_codec_data twl6040_codec = { /* single-step ramp for headset and handsfree */ .hs_left_step = 0x0f, .hs_right_step = 0x0f, @@ -568,7 +569,7 @@ static struct twl4030_codec_data twl6040_codec = { .hf_right_step = 0x1d, }; -static struct twl4030_vibra_data twl6040_vibra = { +static struct twl6040_vibra_data twl6040_vibra = { .vibldrv_res = 8, .vibrdrv_res = 3, .viblmotor_res = 10, @@ -577,16 +578,14 @@ static struct twl4030_vibra_data twl6040_vibra = { .vddvibr_uV = 0, /* fixed volt supply - VBAT */ }; -static struct twl4030_audio_data twl6040_audio = { +static struct twl6040_platform_data twl6040_data = { .codec = &twl6040_codec, .vibra = &twl6040_vibra, .audpwron_gpio = 127, - .naudint_irq = OMAP44XX_IRQ_SYS_2N, .irq_base = TWL6040_CODEC_IRQ_BASE, }; static struct twl4030_platform_data sdp4430_twldata = { - .audio = &twl6040_audio, /* Regulators */ .vusim = &sdp4430_vusim, .vaux1 = &sdp4430_vaux1, @@ -617,7 +616,8 @@ static int __init omap4_i2c_init(void) TWL_COMMON_REGULATOR_VCXIO | TWL_COMMON_REGULATOR_VUSB | TWL_COMMON_REGULATOR_CLK32KG); - omap4_pmic_init("twl6030", &sdp4430_twldata); + omap4_pmic_init("twl6030", &sdp4430_twldata, + &twl6040_data, OMAP44XX_IRQ_SYS_2N); omap_register_i2c_bus(2, 400, NULL, 0); omap_register_i2c_bus(3, 400, sdp4430_i2c_3_boardinfo, ARRAY_SIZE(sdp4430_i2c_3_boardinfo)); diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c index 74e1687..098d183 100644 --- a/arch/arm/mach-omap2/board-generic.c +++ b/arch/arm/mach-omap2/board-generic.c @@ -137,7 +137,7 @@ static struct twl4030_platform_data sdp4430_twldata = { static void __init omap4_i2c_init(void) { - omap4_pmic_init("twl6030", &sdp4430_twldata); + omap4_pmic_init("twl6030", &sdp4430_twldata, NULL, 0); } static void __init omap4_init(void) diff --git a/arch/arm/mach-omap2/board-omap4panda.c b/arch/arm/mach-omap2/board-omap4panda.c index d8c0e89..1b782ba 100644 --- a/arch/arm/mach-omap2/board-omap4panda.c +++ b/arch/arm/mach-omap2/board-omap4panda.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include #include @@ -284,7 +285,7 @@ static int __init omap4_twl6030_hsmmc_init(struct omap2_hsmmc_info *controllers) return 0; } -static struct twl4030_codec_data twl6040_codec = { +static struct twl6040_codec_data twl6040_codec = { /* single-step ramp for headset and handsfree */ .hs_left_step = 0x0f, .hs_right_step = 0x0f, @@ -292,17 +293,14 @@ static struct twl4030_codec_data twl6040_codec = { .hf_right_step = 0x1d, }; -static struct twl4030_audio_data twl6040_audio = { +static struct twl6040_platform_data twl6040_data = { .codec = &twl6040_codec, .audpwron_gpio = 127, - .naudint_irq = OMAP44XX_IRQ_SYS_2N, .irq_base = TWL6040_CODEC_IRQ_BASE, }; /* Panda board uses the common PMIC configuration */ -static struct twl4030_platform_data omap4_panda_twldata = { - .audio = &twl6040_audio, -}; +static struct twl4030_platform_data omap4_panda_twldata; /* * Display monitor features are burnt in their EEPROM as EDID data. The EEPROM @@ -326,7 +324,8 @@ static int __init omap4_panda_i2c_init(void) TWL_COMMON_REGULATOR_VCXIO | TWL_COMMON_REGULATOR_VUSB | TWL_COMMON_REGULATOR_CLK32KG); - omap4_pmic_init("twl6030", &omap4_panda_twldata); + omap4_pmic_init("twl6030", &omap4_panda_twldata, + &twl6040_data, OMAP44XX_IRQ_SYS_2N); omap_register_i2c_bus(2, 400, NULL, 0); /* * Bus 3 is attached to the DVI port where devices like the pico DLP diff --git a/arch/arm/mach-omap2/twl-common.c b/arch/arm/mach-omap2/twl-common.c index 4b57757..7a7b893 100644 --- a/arch/arm/mach-omap2/twl-common.c +++ b/arch/arm/mach-omap2/twl-common.c @@ -37,6 +37,16 @@ static struct i2c_board_info __initdata pmic_i2c_board_info = { .flags = I2C_CLIENT_WAKE, }; +static struct i2c_board_info __initdata omap4_i2c1_board_info[] = { + { + .addr = 0x48, + .flags = I2C_CLIENT_WAKE, + }, + { + I2C_BOARD_INFO("twl6040", 0x4b), + }, +}; + void __init omap_pmic_init(int bus, u32 clkrate, const char *pmic_type, int pmic_irq, struct twl4030_platform_data *pmic_data) @@ -49,14 +59,31 @@ void __init omap_pmic_init(int bus, u32 clkrate, omap_register_i2c_bus(bus, clkrate, &pmic_i2c_board_info, 1); } +void __init omap4_pmic_init(const char *pmic_type, + struct twl4030_platform_data *pmic_data, + struct twl6040_platform_data *twl6040_data, int twl6040_irq) +{ + /* PMIC part*/ + strncpy(omap4_i2c1_board_info[0].type, pmic_type, + sizeof(omap4_i2c1_board_info[0].type)); + omap4_i2c1_board_info[0].irq = OMAP44XX_IRQ_SYS_1N; + omap4_i2c1_board_info[0].platform_data = pmic_data; + + /* TWL6040 audio IC part */ + omap4_i2c1_board_info[1].irq = twl6040_irq; + omap4_i2c1_board_info[1].platform_data = twl6040_data; + + omap_register_i2c_bus(1, 400, omap4_i2c1_board_info, 2); + +} + void __init omap_pmic_late_init(void) { /* Init the OMAP TWL parameters (if PMIC has been registerd) */ - if (!pmic_i2c_board_info.irq) - return; - - omap3_twl_init(); - omap4_twl_init(); + if (pmic_i2c_board_info.irq) + omap3_twl_init(); + if (omap4_i2c1_board_info[0].irq) + omap4_twl_init(); } #if defined(CONFIG_ARCH_OMAP3) diff --git a/arch/arm/mach-omap2/twl-common.h b/arch/arm/mach-omap2/twl-common.h index 275dde8..0962748 100644 --- a/arch/arm/mach-omap2/twl-common.h +++ b/arch/arm/mach-omap2/twl-common.h @@ -29,6 +29,7 @@ struct twl4030_platform_data; +struct twl6040_platform_data; void omap_pmic_init(int bus, u32 clkrate, const char *pmic_type, int pmic_irq, struct twl4030_platform_data *pmic_data); @@ -46,12 +47,9 @@ static inline void omap3_pmic_init(const char *pmic_type, omap_pmic_init(1, 2600, pmic_type, INT_34XX_SYS_NIRQ, pmic_data); } -static inline void omap4_pmic_init(const char *pmic_type, - struct twl4030_platform_data *pmic_data) -{ - /* Phoenix Audio IC needs I2C1 to start with 400 KHz or less */ - omap_pmic_init(1, 400, pmic_type, OMAP44XX_IRQ_SYS_1N, pmic_data); -} +void omap4_pmic_init(const char *pmic_type, + struct twl4030_platform_data *pmic_data, + struct twl6040_platform_data *audio_data, int twl6040_irq); void omap3_pmic_get_config(struct twl4030_platform_data *pmic_data, u32 pdata_flags, u32 regulators_flags); diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 2d78779..7faf4a7 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -380,8 +380,7 @@ config INPUT_TWL4030_VIBRA config INPUT_TWL6040_VIBRA tristate "Support for TWL6040 Vibrator" - depends on TWL4030_CORE - select TWL6040_CORE + depends on TWL6040_CORE select INPUT_FF_MEMLESS help This option enables support for TWL6040 Vibrator Driver. diff --git a/drivers/input/misc/twl6040-vibra.c b/drivers/input/misc/twl6040-vibra.c index 45874fe..14e94f5 100644 --- a/drivers/input/misc/twl6040-vibra.c +++ b/drivers/input/misc/twl6040-vibra.c @@ -28,7 +28,7 @@ #include #include #include -#include +#include #include #include #include @@ -257,7 +257,7 @@ static SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops, twl6040_vibra_suspend, NULL); static int __devinit twl6040_vibra_probe(struct platform_device *pdev) { - struct twl4030_vibra_data *pdata = pdev->dev.platform_data; + struct twl6040_vibra_data *pdata = pdev->dev.platform_data; struct vibra_info *info; int ret; diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 29f463c..11e44386 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -268,10 +268,17 @@ config TWL6030_PWM This is used to control charging LED brightness. config TWL6040_CORE - bool - depends on TWL4030_CORE && GENERIC_HARDIRQS + bool "Support for TWL6040 audio codec" + depends on I2C=y && GENERIC_HARDIRQS select MFD_CORE + select REGMAP_I2C default n + help + Say yes here if you want support for Texas Instruments TWL6040 audio + codec. + This driver provides common support for accessing the device, + additional drivers must be enabled in order to use the + functionality of the device (audio, vibra). config MFD_STMPE bool "Support STMicroelectronics STMPE" diff --git a/drivers/mfd/twl6040-core.c b/drivers/mfd/twl6040-core.c index b2d8e51..2d6beda 100644 --- a/drivers/mfd/twl6040-core.c +++ b/drivers/mfd/twl6040-core.c @@ -30,7 +30,9 @@ #include #include #include -#include +#include +#include +#include #include #include @@ -39,7 +41,7 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) { int ret; - u8 val = 0; + unsigned int val; mutex_lock(&twl6040->io_mutex); /* Vibra control registers from cache */ @@ -47,7 +49,7 @@ int twl6040_reg_read(struct twl6040 *twl6040, unsigned int reg) reg == TWL6040_REG_VIBCTLR)) { val = twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)]; } else { - ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg); + ret = regmap_read(twl6040->regmap, reg, &val); if (ret < 0) { mutex_unlock(&twl6040->io_mutex); return ret; @@ -64,7 +66,7 @@ int twl6040_reg_write(struct twl6040 *twl6040, unsigned int reg, u8 val) int ret; mutex_lock(&twl6040->io_mutex); - ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg); + ret = regmap_write(twl6040->regmap, reg, val); /* Cache the vibra control registers */ if (reg == TWL6040_REG_VIBCTLL || reg == TWL6040_REG_VIBCTLR) twl6040->vibra_ctrl_cache[VIBRACTRL_MEMBER(reg)] = val; @@ -77,16 +79,9 @@ EXPORT_SYMBOL(twl6040_reg_write); int twl6040_set_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) { int ret; - u8 val; mutex_lock(&twl6040->io_mutex); - ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg); - if (ret) - goto out; - - val |= mask; - ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg); -out: + ret = regmap_update_bits(twl6040->regmap, reg, mask, mask); mutex_unlock(&twl6040->io_mutex); return ret; } @@ -95,16 +90,9 @@ EXPORT_SYMBOL(twl6040_set_bits); int twl6040_clear_bits(struct twl6040 *twl6040, unsigned int reg, u8 mask) { int ret; - u8 val; mutex_lock(&twl6040->io_mutex); - ret = twl_i2c_read_u8(TWL_MODULE_AUDIO_VOICE, &val, reg); - if (ret) - goto out; - - val &= ~mask; - ret = twl_i2c_write_u8(TWL_MODULE_AUDIO_VOICE, val, reg); -out: + ret = regmap_update_bits(twl6040->regmap, reg, mask, 0); mutex_unlock(&twl6040->io_mutex); return ret; } @@ -494,32 +482,58 @@ static struct resource twl6040_codec_rsrc[] = { }, }; -static int __devinit twl6040_probe(struct platform_device *pdev) +static bool twl6040_readable_reg(struct device *dev, unsigned int reg) { - struct twl4030_audio_data *pdata = pdev->dev.platform_data; + /* Register 0 is not readable */ + if (!reg) + return false; + return true; +} + +static struct regmap_config twl6040_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = TWL6040_REG_STATUS, /* 0x2e */ + + .readable_reg = twl6040_readable_reg, +}; + +static int __devinit twl6040_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct twl6040_platform_data *pdata = client->dev.platform_data; struct twl6040 *twl6040; struct mfd_cell *cell = NULL; int ret, children = 0; if (!pdata) { - dev_err(&pdev->dev, "Platform data is missing\n"); + dev_err(&client->dev, "Platform data is missing\n"); return -EINVAL; } /* In order to operate correctly we need valid interrupt config */ - if (!pdata->naudint_irq || !pdata->irq_base) { - dev_err(&pdev->dev, "Invalid IRQ configuration\n"); + if (!client->irq || !pdata->irq_base) { + dev_err(&client->dev, "Invalid IRQ configuration\n"); return -EINVAL; } - twl6040 = kzalloc(sizeof(struct twl6040), GFP_KERNEL); - if (!twl6040) - return -ENOMEM; + twl6040 = devm_kzalloc(&client->dev, sizeof(struct twl6040), + GFP_KERNEL); + if (!twl6040) { + ret = -ENOMEM; + goto err; + } + + twl6040->regmap = regmap_init_i2c(client, &twl6040_regmap_config); + if (IS_ERR(twl6040->regmap)) { + ret = PTR_ERR(twl6040->regmap); + goto err; + } - platform_set_drvdata(pdev, twl6040); + i2c_set_clientdata(client, twl6040); - twl6040->dev = &pdev->dev; - twl6040->irq = pdata->naudint_irq; + twl6040->dev = &client->dev; + twl6040->irq = client->irq; twl6040->irq_base = pdata->irq_base; mutex_init(&twl6040->mutex); @@ -588,12 +602,12 @@ static int __devinit twl6040_probe(struct platform_device *pdev) } if (children) { - ret = mfd_add_devices(&pdev->dev, pdev->id, twl6040->cells, + ret = mfd_add_devices(&client->dev, -1, twl6040->cells, children, NULL, 0); if (ret) goto mfd_err; } else { - dev_err(&pdev->dev, "No platform data found for children\n"); + dev_err(&client->dev, "No platform data found for children\n"); ret = -ENODEV; goto mfd_err; } @@ -608,14 +622,15 @@ gpio2_err: if (gpio_is_valid(twl6040->audpwron)) gpio_free(twl6040->audpwron); gpio1_err: - platform_set_drvdata(pdev, NULL); - kfree(twl6040); + i2c_set_clientdata(client, NULL); + regmap_exit(twl6040->regmap); +err: return ret; } -static int __devexit twl6040_remove(struct platform_device *pdev) +static int __devexit twl6040_remove(struct i2c_client *client) { - struct twl6040 *twl6040 = platform_get_drvdata(pdev); + struct twl6040 *twl6040 = i2c_get_clientdata(client); if (twl6040->power_count) twl6040_power(twl6040, 0); @@ -626,23 +641,30 @@ static int __devexit twl6040_remove(struct platform_device *pdev) free_irq(twl6040->irq_base + TWL6040_IRQ_READY, twl6040); twl6040_irq_exit(twl6040); - mfd_remove_devices(&pdev->dev); - platform_set_drvdata(pdev, NULL); - kfree(twl6040); + mfd_remove_devices(&client->dev); + i2c_set_clientdata(client, NULL); + regmap_exit(twl6040->regmap); return 0; } -static struct platform_driver twl6040_driver = { +static const struct i2c_device_id twl6040_i2c_id[] = { + { "twl6040", 0, }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, twl6040_i2c_id); + +static struct i2c_driver twl6040_driver = { + .driver = { + .name = "twl6040", + .owner = THIS_MODULE, + }, .probe = twl6040_probe, .remove = __devexit_p(twl6040_remove), - .driver = { - .owner = THIS_MODULE, - .name = "twl6040", - }, + .id_table = twl6040_i2c_id, }; -module_platform_driver(twl6040_driver); +module_i2c_driver(twl6040_driver); MODULE_DESCRIPTION("TWL6040 MFD"); MODULE_AUTHOR("Misael Lopez Cruz "); diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h index 2463b61..1f90de0 100644 --- a/include/linux/i2c/twl.h +++ b/include/linux/i2c/twl.h @@ -666,23 +666,11 @@ struct twl4030_codec_data { unsigned int check_defaults:1; unsigned int reset_registers:1; unsigned int hs_extmute:1; - u16 hs_left_step; - u16 hs_right_step; - u16 hf_left_step; - u16 hf_right_step; void (*set_hs_extmute)(int mute); }; struct twl4030_vibra_data { unsigned int coexist; - - /* twl6040 */ - unsigned int vibldrv_res; /* left driver resistance */ - unsigned int vibrdrv_res; /* right driver resistance */ - unsigned int viblmotor_res; /* left motor resistance */ - unsigned int vibrmotor_res; /* right motor resistance */ - int vddvibl_uV; /* VDDVIBL volt, set 0 for fixed reg */ - int vddvibr_uV; /* VDDVIBR volt, set 0 for fixed reg */ }; struct twl4030_audio_data { diff --git a/include/linux/mfd/twl6040.h b/include/linux/mfd/twl6040.h index 9bc9ac6..b15b5f0 100644 --- a/include/linux/mfd/twl6040.h +++ b/include/linux/mfd/twl6040.h @@ -174,8 +174,35 @@ #define TWL6040_SYSCLK_SEL_LPPLL 0 #define TWL6040_SYSCLK_SEL_HPPLL 1 +struct twl6040_codec_data { + u16 hs_left_step; + u16 hs_right_step; + u16 hf_left_step; + u16 hf_right_step; +}; + +struct twl6040_vibra_data { + unsigned int vibldrv_res; /* left driver resistance */ + unsigned int vibrdrv_res; /* right driver resistance */ + unsigned int viblmotor_res; /* left motor resistance */ + unsigned int vibrmotor_res; /* right motor resistance */ + int vddvibl_uV; /* VDDVIBL volt, set 0 for fixed reg */ + int vddvibr_uV; /* VDDVIBR volt, set 0 for fixed reg */ +}; + +struct twl6040_platform_data { + int audpwron_gpio; /* audio power-on gpio */ + unsigned int irq_base; + + struct twl6040_codec_data *codec; + struct twl6040_vibra_data *vibra; +}; + +struct regmap; + struct twl6040 { struct device *dev; + struct regmap *regmap; struct mutex mutex; struct mutex io_mutex; struct mutex irq_mutex; diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig index 6508e8b..59d8efa 100644 --- a/sound/soc/codecs/Kconfig +++ b/sound/soc/codecs/Kconfig @@ -57,7 +57,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_TPA6130A2 if I2C select SND_SOC_TLV320DAC33 if I2C select SND_SOC_TWL4030 if TWL4030_CORE - select SND_SOC_TWL6040 if TWL4030_CORE + select SND_SOC_TWL6040 if TWL6040_CORE select SND_SOC_UDA134X select SND_SOC_UDA1380 if I2C select SND_SOC_WL1273 if MFD_WL1273_CORE @@ -276,7 +276,6 @@ config SND_SOC_TWL4030 tristate config SND_SOC_TWL6040 - select TWL6040_CORE tristate config SND_SOC_UDA134X diff --git a/sound/soc/codecs/twl6040.c b/sound/soc/codecs/twl6040.c index 2d8c6b8..dc7509b 100644 --- a/sound/soc/codecs/twl6040.c +++ b/sound/soc/codecs/twl6040.c @@ -26,7 +26,6 @@ #include #include #include -#include #include #include @@ -1528,7 +1527,7 @@ static int twl6040_resume(struct snd_soc_codec *codec) static int twl6040_probe(struct snd_soc_codec *codec) { struct twl6040_data *priv; - struct twl4030_codec_data *pdata = dev_get_platdata(codec->dev); + struct twl6040_codec_data *pdata = dev_get_platdata(codec->dev); struct platform_device *pdev = container_of(codec->dev, struct platform_device, dev); int ret = 0; diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig index e00dd0b..deafbfa 100644 --- a/sound/soc/omap/Kconfig +++ b/sound/soc/omap/Kconfig @@ -97,7 +97,7 @@ config SND_OMAP_SOC_SDP3430 config SND_OMAP_SOC_OMAP_ABE_TWL6040 tristate "SoC Audio support for OMAP boards using ABE and twl6040 codec" - depends on TWL4030_CORE && SND_OMAP_SOC && ARCH_OMAP4 + depends on TWL6040_CORE && SND_OMAP_SOC && ARCH_OMAP4 select SND_OMAP_SOC_DMIC select SND_OMAP_SOC_MCPDM select SND_SOC_TWL6040 -- cgit v1.1 From 1fcb57d0f6e1150003d222051aaaf4bc4a9ccc94 Mon Sep 17 00:00:00 2001 From: Keshava Munegowda Date: Mon, 19 Mar 2012 12:12:47 +0530 Subject: ARM: OMAP3: USB: Fix the EHCI ULPI PHY reset issue It is observed that the echi ports of 3430 sdp board are not working due to the random timing of programming the associated GPIOs of the ULPI PHYs of the EHCI for reset. If the PHYs are reset at during usbhs core driver, host ports will not work because EHCI driver is loaded after the resetting PHYs. The PHYs should be in reset state while initializing the EHCI controller. The code which does the GPIO pins associated with the PHYs are programmed to reset is moved from the USB host core driver to EHCI driver. Signed-off-by: Keshava Munegowda Reviewed-by: Partha Basak Acked-by: Felipe Balbi Tested-by: Igor Grinberg Signed-off-by: Samuel Ortiz --- drivers/mfd/omap-usb-host.c | 44 -------------------------------------------- drivers/usb/host/ehci-omap.c | 39 +++++++++++++++++++++++++++++++++++++-- 2 files changed, 37 insertions(+), 46 deletions(-) diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index 95a2e54..c8aae66 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -25,7 +25,6 @@ #include #include #include -#include #include #include @@ -502,19 +501,6 @@ static void omap_usbhs_init(struct device *dev) pm_runtime_get_sync(dev); spin_lock_irqsave(&omap->lock, flags); - if (pdata->ehci_data->phy_reset) { - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) - gpio_request_one(pdata->ehci_data->reset_gpio_port[0], - GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); - - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) - gpio_request_one(pdata->ehci_data->reset_gpio_port[1], - GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); - - /* Hold the PHY in RESET for enough time till DIR is high */ - udelay(10); - } - omap->usbhs_rev = usbhs_read(omap->uhh_base, OMAP_UHH_REVISION); dev_dbg(dev, "OMAP UHH_REVISION 0x%x\n", omap->usbhs_rev); @@ -593,39 +579,10 @@ static void omap_usbhs_init(struct device *dev) usbhs_omap_tll_init(dev, OMAP_TLL_CHANNEL_COUNT); } - if (pdata->ehci_data->phy_reset) { - /* Hold the PHY in RESET for enough time till - * PHY is settled and ready - */ - udelay(10); - - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) - gpio_set_value - (pdata->ehci_data->reset_gpio_port[0], 1); - - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) - gpio_set_value - (pdata->ehci_data->reset_gpio_port[1], 1); - } - spin_unlock_irqrestore(&omap->lock, flags); pm_runtime_put_sync(dev); } -static void omap_usbhs_deinit(struct device *dev) -{ - struct usbhs_hcd_omap *omap = dev_get_drvdata(dev); - struct usbhs_omap_platform_data *pdata = &omap->platdata; - - if (pdata->ehci_data->phy_reset) { - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[0])) - gpio_free(pdata->ehci_data->reset_gpio_port[0]); - - if (gpio_is_valid(pdata->ehci_data->reset_gpio_port[1])) - gpio_free(pdata->ehci_data->reset_gpio_port[1]); - } -} - /** * usbhs_omap_probe - initialize TI-based HCDs @@ -860,7 +817,6 @@ static int __devexit usbhs_omap_remove(struct platform_device *pdev) { struct usbhs_hcd_omap *omap = platform_get_drvdata(pdev); - omap_usbhs_deinit(&pdev->dev); iounmap(omap->tll_base); iounmap(omap->uhh_base); clk_put(omap->init_60m_fclk); diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c index bba9850..5c78f9e 100644 --- a/drivers/usb/host/ehci-omap.c +++ b/drivers/usb/host/ehci-omap.c @@ -42,6 +42,7 @@ #include #include #include +#include /* EHCI Register Set */ #define EHCI_INSNREG04 (0xA0) @@ -191,6 +192,19 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) } } + if (pdata->phy_reset) { + if (gpio_is_valid(pdata->reset_gpio_port[0])) + gpio_request_one(pdata->reset_gpio_port[0], + GPIOF_OUT_INIT_LOW, "USB1 PHY reset"); + + if (gpio_is_valid(pdata->reset_gpio_port[1])) + gpio_request_one(pdata->reset_gpio_port[1], + GPIOF_OUT_INIT_LOW, "USB2 PHY reset"); + + /* Hold the PHY in RESET for enough time till DIR is high */ + udelay(10); + } + pm_runtime_enable(dev); pm_runtime_get_sync(dev); @@ -237,6 +251,19 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev) /* root ports should always stay powered */ ehci_port_power(omap_ehci, 1); + if (pdata->phy_reset) { + /* Hold the PHY in RESET for enough time till + * PHY is settled and ready + */ + udelay(10); + + if (gpio_is_valid(pdata->reset_gpio_port[0])) + gpio_set_value(pdata->reset_gpio_port[0], 1); + + if (gpio_is_valid(pdata->reset_gpio_port[1])) + gpio_set_value(pdata->reset_gpio_port[1], 1); + } + return 0; err_add_hcd: @@ -259,8 +286,9 @@ err_io: */ static int ehci_hcd_omap_remove(struct platform_device *pdev) { - struct device *dev = &pdev->dev; - struct usb_hcd *hcd = dev_get_drvdata(dev); + struct device *dev = &pdev->dev; + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct ehci_hcd_omap_platform_data *pdata = dev->platform_data; usb_remove_hcd(hcd); disable_put_regulator(dev->platform_data); @@ -269,6 +297,13 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev) pm_runtime_put_sync(dev); pm_runtime_disable(dev); + if (pdata->phy_reset) { + if (gpio_is_valid(pdata->reset_gpio_port[0])) + gpio_free(pdata->reset_gpio_port[0]); + + if (gpio_is_valid(pdata->reset_gpio_port[1])) + gpio_free(pdata->reset_gpio_port[1]); + } return 0; } -- cgit v1.1 From 02269ab10f1130d35dc35db72ab026d16ba31abf Mon Sep 17 00:00:00 2001 From: Dmitry Artamonow Date: Thu, 12 Apr 2012 15:33:34 +0400 Subject: mfd: Fix asic3_gpio_to_irq Assumption that irq numbers of asic3 gpios start at IRQ_BOARD_START is certainly wrong - driver may as well use any other base for its irqs (consider for example the imaginary case of two ASIC3 chips onboard) Furthermore, some platforms even don't have IRQ_BOARD_START defined, so driver will fail to build on them: ------------------------------------------------------- drivers/mfd/asic3.c: In function 'asic3_gpio_to_irq': drivers/mfd/asic3.c:530: error: 'IRQ_BOARD_START' undeclared (first use in this function) drivers/mfd/asic3.c:530: error: (Each undeclared identifier is reported only once drivers/mfd/asic3.c:530: error: for each function it appears in.) ------------------------------------------------------- Fix it by using irq_base from driver data. Signed-off-by: Dmitry Artamonow Signed-off-by: Samuel Ortiz --- drivers/mfd/asic3.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index 1895cf9..1582c3d 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -527,7 +527,9 @@ static void asic3_gpio_set(struct gpio_chip *chip, static int asic3_gpio_to_irq(struct gpio_chip *chip, unsigned offset) { - return (offset < ASIC3_NUM_GPIOS) ? IRQ_BOARD_START + offset : -ENXIO; + struct asic3 *asic = container_of(chip, struct asic3, gpio); + + return (offset < ASIC3_NUM_GPIOS) ? asic->irq_base + offset : -ENXIO; } static __init int asic3_gpio_probe(struct platform_device *pdev, -- cgit v1.1 From 32998cc96a76cc3f42f66b55fec301377e439c66 Mon Sep 17 00:00:00 2001 From: Hauke Mehrtens Date: Sat, 14 Apr 2012 14:38:54 +0200 Subject: bcma: use fallback sprom if no on chip sprom is available bcma should check for a fallback sprom every time it can not find a sprom on the card itself or a normal external sprom mapped into the memory of the chip. When otp sprom support was introduced it tried to read out the sprom from the wireless chip also if no otp sprom was available. This caused a Data bus error in bcma_sprom_get() when reading out the sprom for the SoC. This fixes a regression introduced in commit: commit 10d8493cd9efd38b1947b7a74276dbdc8311aa1a Author: Arend van Spriel Date: Tue Mar 6 15:50:48 2012 +0100 bcma: add support for on-chip OTP memory used for SPROM storage This patch was tested on a Netgear WNDR3400 (Broadcom BCM4718 SoC). Reported-by: Nick Bowler Signed-off-by: Hauke Mehrtens Acked-by: Arend van Spriel Signed-off-by: John W. Linville --- drivers/bcma/sprom.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/bcma/sprom.c b/drivers/bcma/sprom.c index cdcf75c..3e2a600 100644 --- a/drivers/bcma/sprom.c +++ b/drivers/bcma/sprom.c @@ -404,16 +404,19 @@ int bcma_sprom_get(struct bcma_bus *bus) return -EOPNOTSUPP; if (!bcma_sprom_ext_available(bus)) { + bool sprom_onchip; + /* * External SPROM takes precedence so check * on-chip OTP only when no external SPROM * is present. */ - if (bcma_sprom_onchip_available(bus)) { + sprom_onchip = bcma_sprom_onchip_available(bus); + if (sprom_onchip) { /* determine offset */ offset = bcma_sprom_onchip_offset(bus); } - if (!offset) { + if (!offset || !sprom_onchip) { /* * Maybe there is no SPROM on the device? * Now we ask the arch code if there is some sprom -- cgit v1.1 From b1994304fc399f5d3a5368c81111d713490c4799 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Sun, 15 Apr 2012 16:06:04 +0100 Subject: x86, efi: Add dedicated EFI stub entry point The method used to work out whether we were booted by EFI firmware or via a boot loader is broken. Because efi_main() is always executed when booting from a boot loader we will dereference invalid pointers either on the stack (CONFIG_X86_32) or contained in %rdx (CONFIG_X86_64) when searching for an EFI System Table signature. Instead of dereferencing these invalid system table pointers, add a new entry point that is only used when booting from EFI firmware, when we know the pointer arguments will be valid. With this change legacy boot loaders will no longer execute efi_main(), but will instead skip EFI stub initialisation completely. [ hpa: Marking this for urgent/stable since it is a regression when the option is enabled; without the option the patch has no effect ] Signed-off-by: Matt Fleming Link: http://lkml.kernel.org/r/1334584744.26997.14.camel@mfleming-mobl1.ger.corp.intel.com Reported-by: Jordan Justen Signed-off-by: H. Peter Anvin Cc: v3.3 --- arch/x86/boot/compressed/head_32.S | 14 +++++++++++--- arch/x86/boot/compressed/head_64.S | 22 ++++++++++++++++------ arch/x86/boot/tools/build.c | 15 +++++++++++---- 3 files changed, 38 insertions(+), 13 deletions(-) diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index a055993..c85e3ac 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -33,6 +33,9 @@ __HEAD ENTRY(startup_32) #ifdef CONFIG_EFI_STUB + jmp preferred_addr + + .balign 0x10 /* * We don't need the return address, so set up the stack so * efi_main() can find its arugments. @@ -41,12 +44,17 @@ ENTRY(startup_32) call efi_main cmpl $0, %eax - je preferred_addr movl %eax, %esi - call 1f + jne 2f 1: + /* EFI init failed, so hang. */ + hlt + jmp 1b +2: + call 3f +3: popl %eax - subl $1b, %eax + subl $3b, %eax subl BP_pref_address(%esi), %eax add BP_code32_start(%esi), %eax leal preferred_addr(%eax), %eax diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S index 558d76c..87e03a1 100644 --- a/arch/x86/boot/compressed/head_64.S +++ b/arch/x86/boot/compressed/head_64.S @@ -200,18 +200,28 @@ ENTRY(startup_64) * entire text+data+bss and hopefully all of memory. */ #ifdef CONFIG_EFI_STUB - pushq %rsi + /* + * The entry point for the PE/COFF executable is 0x210, so only + * legacy boot loaders will execute this jmp. + */ + jmp preferred_addr + + .org 0x210 mov %rcx, %rdi mov %rdx, %rsi call efi_main - popq %rsi - cmpq $0,%rax - je preferred_addr movq %rax,%rsi - call 1f + cmpq $0,%rax + jne 2f 1: + /* EFI init failed, so hang. */ + hlt + jmp 1b +2: + call 3f +3: popq %rax - subq $1b, %rax + subq $3b, %rax subq BP_pref_address(%rsi), %rax add BP_code32_start(%esi), %eax leaq preferred_addr(%rax), %rax diff --git a/arch/x86/boot/tools/build.c b/arch/x86/boot/tools/build.c index ed54976..24443a3 100644 --- a/arch/x86/boot/tools/build.c +++ b/arch/x86/boot/tools/build.c @@ -205,8 +205,13 @@ int main(int argc, char ** argv) put_unaligned_le32(file_sz, &buf[pe_header + 0x50]); #ifdef CONFIG_X86_32 - /* Address of entry point */ - put_unaligned_le32(i, &buf[pe_header + 0x28]); + /* + * Address of entry point. + * + * The EFI stub entry point is +16 bytes from the start of + * the .text section. + */ + put_unaligned_le32(i + 16, &buf[pe_header + 0x28]); /* .text size */ put_unaligned_le32(file_sz, &buf[pe_header + 0xb0]); @@ -217,9 +222,11 @@ int main(int argc, char ** argv) /* * Address of entry point. startup_32 is at the beginning and * the 64-bit entry point (startup_64) is always 512 bytes - * after. + * after. The EFI stub entry point is 16 bytes after that, as + * the first instruction allows legacy loaders to jump over + * the EFI stub initialisation */ - put_unaligned_le32(i + 512, &buf[pe_header + 0x28]); + put_unaligned_le32(i + 528, &buf[pe_header + 0x28]); /* .text size */ put_unaligned_le32(file_sz, &buf[pe_header + 0xc0]); -- cgit v1.1 From 68894632afb2729a1d8785c877840953894c7283 Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Mon, 2 Apr 2012 18:06:48 +0200 Subject: x86/platform: Remove incorrect error message in x86_default_fixup_cpu_id() It's only called from amd.c:srat_detect_node(). The introduced condition for calling the fixup code is true for all AMD multi-node processors, e.g. Magny-Cours and Interlagos. There we have 2 NUMA nodes on one socket. Thus there are cores having different numa-node-id but with equal phys_proc_id. There is no point to print error messages in such a situation. The confusing/misleading error message was introduced with commit 64be4c1c2428e148de6081af235e2418e6a66dda ("x86: Add x86_init platform override to fix up NUMA core numbering"). Remove the default fixup function (especially the error message) and replace it by a NULL pointer check, move the Numascale-specific condition for calling the fixup into the fixup-function itself and slightly adapt the comment. Signed-off-by: Andreas Herrmann Acked-by: Borislav Petkov Cc: Cc: Cc: Cc: Link: http://lkml.kernel.org/r/20120402160648.GR27684@alberich.amd.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/x86_init.h | 1 - arch/x86/kernel/apic/apic_numachip.c | 7 +++++-- arch/x86/kernel/cpu/amd.c | 7 ++++--- arch/x86/kernel/cpu/common.c | 9 --------- arch/x86/kernel/x86_init.c | 1 - 5 files changed, 9 insertions(+), 16 deletions(-) diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h index baaca8d..764b66a 100644 --- a/arch/x86/include/asm/x86_init.h +++ b/arch/x86/include/asm/x86_init.h @@ -195,6 +195,5 @@ extern struct x86_msi_ops x86_msi; extern void x86_init_noop(void); extern void x86_init_uint_noop(unsigned int unused); -extern void x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node); #endif diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 899803e..23e7542 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -207,8 +207,11 @@ static void __init map_csrs(void) static void fixup_cpu_id(struct cpuinfo_x86 *c, int node) { - c->phys_proc_id = node; - per_cpu(cpu_llc_id, smp_processor_id()) = node; + + if (c->phys_proc_id != node) { + c->phys_proc_id = node; + per_cpu(cpu_llc_id, smp_processor_id()) = node; + } } static int __init numachip_system_init(void) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 1248f9c..1c67ca1 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -353,10 +353,11 @@ static void __cpuinit srat_detect_node(struct cpuinfo_x86 *c) node = per_cpu(cpu_llc_id, cpu); /* - * If core numbers are inconsistent, it's likely a multi-fabric platform, - * so invoke platform-specific handler + * On multi-fabric platform (e.g. Numascale NumaChip) a + * platform-specific handler needs to be called to fixup some + * IDs of the CPU. */ - if (c->phys_proc_id != node) + if (x86_cpuinit.fixup_cpu_id) x86_cpuinit.fixup_cpu_id(c, node); if (!node_online(node)) { diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index 67e2583..cf79302 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1163,15 +1163,6 @@ static void dbg_restore_debug_regs(void) #endif /* ! CONFIG_KGDB */ /* - * Prints an error where the NUMA and configured core-number mismatch and the - * platform didn't override this to fix it up - */ -void __cpuinit x86_default_fixup_cpu_id(struct cpuinfo_x86 *c, int node) -{ - pr_err("NUMA core number %d differs from configured core number %d\n", node, c->phys_proc_id); -} - -/* * cpu_init() initializes state that is per-CPU. Some data is already * initialized (naturally) in the bootstrap process, such as the GDT * and IDT. We reload them nevertheless, this function acts as a diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c index e9f265f..9cf71d0 100644 --- a/arch/x86/kernel/x86_init.c +++ b/arch/x86/kernel/x86_init.c @@ -93,7 +93,6 @@ struct x86_init_ops x86_init __initdata = { struct x86_cpuinit_ops x86_cpuinit __cpuinitdata = { .early_percpu_clock_init = x86_init_noop, .setup_percpu_clockev = setup_secondary_APIC_clock, - .fixup_cpu_id = x86_default_fixup_cpu_id, }; static void default_nmi_init(void) { }; -- cgit v1.1 From 6ffd7bdbf8516d691974d21098278af65d4817a5 Mon Sep 17 00:00:00 2001 From: Otavio Salvador Date: Wed, 11 Apr 2012 09:44:30 -0300 Subject: perf tools: Drop CROSS_COMPILE from flex and bison calls The flex and bison tools generate arch-independent C code so its binaries are not prefixed with the target-arch prefix. With this patch the Linux 3.4-rc2 can be successfuly build on OE-Core. Signed-off-by: Otavio Salvador Link: http://lkml.kernel.org/r/1334148270-13139-1-git-send-email-otavio@ossystems.com.br Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/perf/Makefile b/tools/perf/Makefile index 03059e7..9bf3fc7 100644 --- a/tools/perf/Makefile +++ b/tools/perf/Makefile @@ -234,8 +234,8 @@ endif export PERL_PATH -FLEX = $(CROSS_COMPILE)flex -BISON= $(CROSS_COMPILE)bison +FLEX = flex +BISON= bison $(OUTPUT)util/parse-events-flex.c: util/parse-events.l $(QUIET_FLEX)$(FLEX) --header-file=$(OUTPUT)util/parse-events-flex.h -t util/parse-events.l > $(OUTPUT)util/parse-events-flex.c -- cgit v1.1 From 82ea267f7dc853a5e6a724916a70a10656efdfc2 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 16 Apr 2012 21:24:32 +0200 Subject: mfd: Fix modular builds of rc5t583 regulator support The combination of commit 1b1247dd75aa5cf5fae54a3bec7280046e9c7957 "mfd: Add support for RICOH PMIC RC5T583" and commit 6ffc3270210efa2bea526953a142ffc908f5bd86 "regulator: Add support for RICOH PMIC RC5T583 regulator" are causing the i386 allmodconfig builds to fail with this: ERROR: "rc5t583_update" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_set_bits" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_clear_bits" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_read" [drivers/regulator/rc5t583-regulator.ko] undefined! and this: ERROR: "rc5t583_ext_power_req_config" [drivers/regulator/rc5t583-regulator.ko] undefined! For the 1st four, make the simple ops static inline, instead of polluting the namespace with trivial exports. For the last one, add an EXPORT_SYMBOL. Signed-off-by: Paul Gortmaker Signed-off-by: Samuel Ortiz --- drivers/mfd/rc5t583.c | 39 +------------------------------------ include/linux/mfd/rc5t583.h | 47 +++++++++++++++++++++++++++++++++++++-------- 2 files changed, 40 insertions(+), 46 deletions(-) diff --git a/drivers/mfd/rc5t583.c b/drivers/mfd/rc5t583.c index 99ef944..44afae0 100644 --- a/drivers/mfd/rc5t583.c +++ b/drivers/mfd/rc5t583.c @@ -80,44 +80,6 @@ static struct mfd_cell rc5t583_subdevs[] = { {.name = "rc5t583-key", } }; -int rc5t583_write(struct device *dev, uint8_t reg, uint8_t val) -{ - struct rc5t583 *rc5t583 = dev_get_drvdata(dev); - return regmap_write(rc5t583->regmap, reg, val); -} - -int rc5t583_read(struct device *dev, uint8_t reg, uint8_t *val) -{ - struct rc5t583 *rc5t583 = dev_get_drvdata(dev); - unsigned int ival; - int ret; - ret = regmap_read(rc5t583->regmap, reg, &ival); - if (!ret) - *val = (uint8_t)ival; - return ret; -} - -int rc5t583_set_bits(struct device *dev, unsigned int reg, - unsigned int bit_mask) -{ - struct rc5t583 *rc5t583 = dev_get_drvdata(dev); - return regmap_update_bits(rc5t583->regmap, reg, bit_mask, bit_mask); -} - -int rc5t583_clear_bits(struct device *dev, unsigned int reg, - unsigned int bit_mask) -{ - struct rc5t583 *rc5t583 = dev_get_drvdata(dev); - return regmap_update_bits(rc5t583->regmap, reg, bit_mask, 0); -} - -int rc5t583_update(struct device *dev, unsigned int reg, - unsigned int val, unsigned int mask) -{ - struct rc5t583 *rc5t583 = dev_get_drvdata(dev); - return regmap_update_bits(rc5t583->regmap, reg, mask, val); -} - static int __rc5t583_set_ext_pwrreq1_control(struct device *dev, int id, int ext_pwr, int slots) { @@ -197,6 +159,7 @@ int rc5t583_ext_power_req_config(struct device *dev, int ds_id, ds_id, ext_pwr_req); return 0; } +EXPORT_SYMBOL(rc5t583_ext_power_req_config); static int rc5t583_clear_ext_power_req(struct rc5t583 *rc5t583, struct rc5t583_platform_data *pdata) diff --git a/include/linux/mfd/rc5t583.h b/include/linux/mfd/rc5t583.h index a2c6160..0b64b19 100644 --- a/include/linux/mfd/rc5t583.h +++ b/include/linux/mfd/rc5t583.h @@ -26,6 +26,7 @@ #include #include +#include #define RC5T583_MAX_REGS 0xF8 @@ -279,14 +280,44 @@ struct rc5t583_platform_data { bool enable_shutdown; }; -int rc5t583_write(struct device *dev, u8 reg, uint8_t val); -int rc5t583_read(struct device *dev, uint8_t reg, uint8_t *val); -int rc5t583_set_bits(struct device *dev, unsigned int reg, - unsigned int bit_mask); -int rc5t583_clear_bits(struct device *dev, unsigned int reg, - unsigned int bit_mask); -int rc5t583_update(struct device *dev, unsigned int reg, - unsigned int val, unsigned int mask); +static inline int rc5t583_write(struct device *dev, uint8_t reg, uint8_t val) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev); + return regmap_write(rc5t583->regmap, reg, val); +} + +static inline int rc5t583_read(struct device *dev, uint8_t reg, uint8_t *val) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev); + unsigned int ival; + int ret; + ret = regmap_read(rc5t583->regmap, reg, &ival); + if (!ret) + *val = (uint8_t)ival; + return ret; +} + +static inline int rc5t583_set_bits(struct device *dev, unsigned int reg, + unsigned int bit_mask) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev); + return regmap_update_bits(rc5t583->regmap, reg, bit_mask, bit_mask); +} + +static inline int rc5t583_clear_bits(struct device *dev, unsigned int reg, + unsigned int bit_mask) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev); + return regmap_update_bits(rc5t583->regmap, reg, bit_mask, 0); +} + +static inline int rc5t583_update(struct device *dev, unsigned int reg, + unsigned int val, unsigned int mask) +{ + struct rc5t583 *rc5t583 = dev_get_drvdata(dev); + return regmap_update_bits(rc5t583->regmap, reg, mask, val); +} + int rc5t583_ext_power_req_config(struct device *dev, int deepsleep_id, int ext_pwr_req, int deepsleep_slot_nr); int rc5t583_irq_init(struct rc5t583 *rc5t583, int irq, int irq_base); -- cgit v1.1 From a49bcabedc18319f673319d5e71b5751e3978179 Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Wed, 11 Apr 2012 23:23:41 +0200 Subject: can: usb: PCAN-USB Pro: fix mem leaks in pcan_usb_pro_init() on error paths If either call to pcan_usb_pro_send_req() in drivers/net/can/usb/peak_usb/pcan_usb_pro.c::pcan_usb_pro_init() fails, we'll leak the memory we allocated to 'usb_if' with kzalloc() when the 'usb_if' variable goes out of scope without having been assigned to anything as we 'return err;'. Fix this by adding appropriate kfree(usb_if) calls to the error paths. Signed-off-by: Jesper Juhl Acked-by: Stephane Grosjean Signed-off-by: Marc Kleine-Budde --- drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c index 5234586..629c4ba 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c @@ -875,6 +875,7 @@ static int pcan_usb_pro_init(struct peak_usb_device *dev) PCAN_USBPRO_INFO_FW, &fi, sizeof(fi)); if (err) { + kfree(usb_if); dev_err(dev->netdev->dev.parent, "unable to read %s firmware info (err %d)\n", pcan_usb_pro.name, err); @@ -885,6 +886,7 @@ static int pcan_usb_pro_init(struct peak_usb_device *dev) PCAN_USBPRO_INFO_BL, &bi, sizeof(bi)); if (err) { + kfree(usb_if); dev_err(dev->netdev->dev.parent, "unable to read %s bootloader info (err %d)\n", pcan_usb_pro.name, err); -- cgit v1.1 From 348f0fc238efb441a28e7644c51f9fd3001b228a Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Mon, 16 Apr 2012 15:41:28 -0400 Subject: tracing: Fix regression with tracing_on The change to make tracing_on affect only the ftrace ring buffer, caused a bug where it wont affect any ring buffer. The problem was that the buffer of the trace_array was passed to the write function and not the trace array itself. The trace_array can change the buffer when running a latency tracer. If this happens, then the buffer being disabled may not be the buffer currently used by ftrace. This will cause the tracing_on file to become useless. The simple fix is to pass the trace_array to the write function instead of the buffer. Then the actual buffer may be changed. Signed-off-by: Steven Rostedt --- kernel/trace/trace.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index ed7b5d1..2a22255 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4629,7 +4629,8 @@ static ssize_t rb_simple_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos) { - struct ring_buffer *buffer = filp->private_data; + struct trace_array *tr = filp->private_data; + struct ring_buffer *buffer = tr->buffer; char buf[64]; int r; @@ -4647,7 +4648,8 @@ static ssize_t rb_simple_write(struct file *filp, const char __user *ubuf, size_t cnt, loff_t *ppos) { - struct ring_buffer *buffer = filp->private_data; + struct trace_array *tr = filp->private_data; + struct ring_buffer *buffer = tr->buffer; unsigned long val; int ret; @@ -4734,7 +4736,7 @@ static __init int tracer_init_debugfs(void) &trace_clock_fops); trace_create_file("tracing_on", 0644, d_tracer, - global_trace.buffer, &rb_simple_fops); + &global_trace, &rb_simple_fops); #ifdef CONFIG_DYNAMIC_FTRACE trace_create_file("dyn_ftrace_total_info", 0444, d_tracer, -- cgit v1.1 From 089f9fba56faf33cc6dd2a6442b7ac92c58b8209 Mon Sep 17 00:00:00 2001 From: Oleg Nesterov Date: Mon, 16 Apr 2012 22:48:15 +0200 Subject: i387: ptrace breaks the lazy-fpu-restore logic Starting from 7e16838d "i387: support lazy restore of FPU state" we assume that fpu_owner_task doesn't need restore_fpu_checking() on the context switch, its FPU state should match what we already have in the FPU on this CPU. However, debugger can change the tracee's FPU state, in this case we should reset fpu.last_cpu to ensure fpu_lazy_restore() can't return true. Change init_fpu() to do this, it is called by user_regset->set() methods. Reported-by: Jan Kratochvil Suggested-by: Linus Torvalds Signed-off-by: Oleg Nesterov Link: http://lkml.kernel.org/r/20120416204815.GB24884@redhat.com Cc: v3.3 Signed-off-by: H. Peter Anvin --- arch/x86/kernel/i387.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c index 7734bcb..2d6e649 100644 --- a/arch/x86/kernel/i387.c +++ b/arch/x86/kernel/i387.c @@ -235,6 +235,7 @@ int init_fpu(struct task_struct *tsk) if (tsk_used_math(tsk)) { if (HAVE_HWFP && tsk == current) unlazy_fpu(tsk); + tsk->thread.fpu.last_cpu = ~0; return 0; } -- cgit v1.1 From 244b65dbfede788f2fa3fe2463c44d0809e97c6b Mon Sep 17 00:00:00 2001 From: David Ward Date: Sun, 15 Apr 2012 12:31:45 +0000 Subject: net_sched: gred: Fix oops in gred_dump() in WRED mode A parameter set exists for WRED mode, called wred_set, to hold the same values for qavg and qidlestart across all VQs. The WRED mode values had been previously held in the VQ for the default DP. After these values were moved to wred_set, the VQ for the default DP was no longer created automatically (so that it could be omitted on purpose, to have packets in the default DP enqueued directly to the device without using RED). However, gred_dump() was overlooked during that change; in WRED mode it still reads qavg/qidlestart from the VQ for the default DP, which might not even exist. As a result, this command sequence will cause an oops: tc qdisc add dev $DEV handle $HANDLE parent $PARENT gred setup \ DPs 3 default 2 grio tc qdisc change dev $DEV handle $HANDLE gred DP 0 prio 8 $RED_OPTIONS tc qdisc change dev $DEV handle $HANDLE gred DP 1 prio 8 $RED_OPTIONS This fixes gred_dump() in WRED mode to use the values held in wred_set. Signed-off-by: David Ward Signed-off-by: David S. Miller --- net/sched/sch_gred.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c index 0b15236..8179494 100644 --- a/net/sched/sch_gred.c +++ b/net/sched/sch_gred.c @@ -565,11 +565,8 @@ static int gred_dump(struct Qdisc *sch, struct sk_buff *skb) opt.packets = q->packetsin; opt.bytesin = q->bytesin; - if (gred_wred_mode(table)) { - q->vars.qidlestart = - table->tab[table->def]->vars.qidlestart; - q->vars.qavg = table->tab[table->def]->vars.qavg; - } + if (gred_wred_mode(table)) + gred_load_wred_set(table, q); opt.qave = red_calc_qavg(&q->parms, &q->vars, q->vars.qavg); -- cgit v1.1 From 4362aaf6054b9760652c7047cdf6fa852acb6cf7 Mon Sep 17 00:00:00 2001 From: David Ward Date: Mon, 16 Apr 2012 03:17:22 +0000 Subject: net_sched: red: Make minor corrections to comments Signed-off-by: David Ward Signed-off-by: David S. Miller --- include/net/red.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/net/red.h b/include/net/red.h index 77d4c37..ef46058 100644 --- a/include/net/red.h +++ b/include/net/red.h @@ -245,7 +245,7 @@ static inline unsigned long red_calc_qavg_from_idle_time(const struct red_parms * * dummy packets as a burst after idle time, i.e. * - * p->qavg *= (1-W)^m + * v->qavg *= (1-W)^m * * This is an apparently overcomplicated solution (f.e. we have to * precompute a table to make this calculation in reasonable time) @@ -279,7 +279,7 @@ static inline unsigned long red_calc_qavg_no_idle_time(const struct red_parms *p unsigned int backlog) { /* - * NOTE: p->qavg is fixed point number with point at Wlog. + * NOTE: v->qavg is fixed point number with point at Wlog. * The formula below is equvalent to floating point * version: * @@ -390,7 +390,7 @@ static inline void red_adaptative_algo(struct red_parms *p, struct red_vars *v) if (red_is_idling(v)) qavg = red_calc_qavg_from_idle_time(p, v); - /* p->qavg is fixed point number with point at Wlog */ + /* v->qavg is fixed point number with point at Wlog */ qavg >>= p->Wlog; if (qavg > p->target_max && p->max_P <= MAX_P_MAX) -- cgit v1.1 From a99ff7d0123b19ecad3b589480b6542716ab6b52 Mon Sep 17 00:00:00 2001 From: Stephane Fillod Date: Sun, 15 Apr 2012 11:38:29 +0000 Subject: net: usb: smsc75xx: fix mtu Make smsc75xx recalculate the hard_mtu after adjusting the hard_header_len. Without this, usbnet adjusts the MTU down to 1492 bytes, and the host is unable to receive standard 1500-byte frames from the device. Inspired by same fix on cdc_eem 78fb72f7936c01d5b426c03a691eca082b03f2b9. Tested on ARM/Omap3 with EVB-LAN7500-LC. Signed-off-by: Stephane Fillod Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 187d01c..a234948 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -1051,6 +1051,7 @@ static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->ethtool_ops = &smsc75xx_ethtool_ops; dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; + dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; } -- cgit v1.1 From 890fdf2a0cb88202d1427589db2cf29c1bdd3c1d Mon Sep 17 00:00:00 2001 From: Hiroaki SHIMODA Date: Sun, 15 Apr 2012 13:26:01 +0000 Subject: dummy: Add ndo_uninit(). In register_netdevice(), when ndo_init() is successful and later some error occurred, ndo_uninit() will be called. So dummy deivce is desirable to implement ndo_uninit() method to free percpu stats for this case. And, ndo_uninit() is also called along with dev->destructor() when device is unregistered, so in order to prevent dev->dstats from being freed twice, dev->destructor is modified to free_netdev(). Signed-off-by: Hiroaki SHIMODA Signed-off-by: David S. Miller --- drivers/net/dummy.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c index d5c6d92..442d91a 100644 --- a/drivers/net/dummy.c +++ b/drivers/net/dummy.c @@ -107,14 +107,14 @@ static int dummy_dev_init(struct net_device *dev) return 0; } -static void dummy_dev_free(struct net_device *dev) +static void dummy_dev_uninit(struct net_device *dev) { free_percpu(dev->dstats); - free_netdev(dev); } static const struct net_device_ops dummy_netdev_ops = { .ndo_init = dummy_dev_init, + .ndo_uninit = dummy_dev_uninit, .ndo_start_xmit = dummy_xmit, .ndo_validate_addr = eth_validate_addr, .ndo_set_rx_mode = set_multicast_list, @@ -128,7 +128,7 @@ static void dummy_setup(struct net_device *dev) /* Initialize the device structure. */ dev->netdev_ops = &dummy_netdev_ops; - dev->destructor = dummy_dev_free; + dev->destructor = free_netdev; /* Fill in device structure with ethernet-generic values. */ dev->tx_queue_len = 0; -- cgit v1.1 From 6b5e7d9ef793c55d72679f058514f33c4258f286 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 15 Apr 2012 11:27:12 +0200 Subject: xen/grant-table: add error-handling code on failure of gnttab_resume Jump to the label ini_nomem as done on the failure of the page allocations above. The code at ini_nomem is modified to accommodate different return values. Signed-off-by: Julia Lawall Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/grant-table.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 1cd94da..f805918 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -1026,6 +1026,7 @@ int gnttab_init(void) int i; unsigned int max_nr_glist_frames, nr_glist_frames; unsigned int nr_init_grefs; + int ret; nr_grant_frames = 1; boot_max_nr_grant_frames = __max_nr_grant_frames(); @@ -1044,12 +1045,16 @@ int gnttab_init(void) nr_glist_frames = (nr_grant_frames * GREFS_PER_GRANT_FRAME + RPP - 1) / RPP; for (i = 0; i < nr_glist_frames; i++) { gnttab_list[i] = (grant_ref_t *)__get_free_page(GFP_KERNEL); - if (gnttab_list[i] == NULL) + if (gnttab_list[i] == NULL) { + ret = -ENOMEM; goto ini_nomem; + } } - if (gnttab_resume() < 0) - return -ENODEV; + if (gnttab_resume() < 0) { + ret = -ENODEV; + goto ini_nomem; + } nr_init_grefs = nr_grant_frames * GREFS_PER_GRANT_FRAME; @@ -1067,7 +1072,7 @@ int gnttab_init(void) for (i--; i >= 0; i--) free_page((unsigned long)gnttab_list[i]); kfree(gnttab_list); - return -ENOMEM; + return ret; } EXPORT_SYMBOL_GPL(gnttab_init); -- cgit v1.1 From bfdd769ac51cb68cb99902192fac81bc67cb23b0 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Tue, 17 Apr 2012 16:58:35 +1000 Subject: m68knommu: fix id number for second eth device on 5275 ColdFire The second ColdFire FEC ethernet device should have an id number of 1, not 0. Otherwise it clashes with the first FEC ethernet device. On booting a kernel on a 5275 based board you will get messages out of the kernel like this: <4>------------[ cut here ]------------ <4>WARNING: at fs/sysfs/dir.c:508 0x0a8b50() <4>sysfs: cannot create duplicate filename 'fec.0' And likely you won't be able to completely boot up after this at all. Signed-off-by: Greg Ungerer --- arch/m68k/platform/coldfire/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/m68k/platform/coldfire/device.c b/arch/m68k/platform/coldfire/device.c index fa50c48..7af9736 100644 --- a/arch/m68k/platform/coldfire/device.c +++ b/arch/m68k/platform/coldfire/device.c @@ -114,7 +114,7 @@ static struct resource mcf_fec1_resources[] = { static struct platform_device mcf_fec1 = { .name = "fec", - .id = 0, + .id = 1, .num_resources = ARRAY_SIZE(mcf_fec1_resources), .resource = mcf_fec1_resources, }; -- cgit v1.1 From 938ed25008d665d1dd937ca251d1aabb363113c6 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Tue, 17 Apr 2012 17:06:34 +1000 Subject: m68knommu: make sure 2nd FEC eth interface pins are enabled on 5275 ColdFire The CONFIG_FEC2 define was removed from the kernel many versions ago. But it is still being used to set the multi-function pins when compiling for a ColdFire 527[45] SoC that has 2 ethernet interfaces. Remove the last remaining uses of this define, and so fix the setting of the pins for the 2nd ethernet interface. Signed-off-by: Greg Ungerer --- arch/m68k/configs/m5275evb_defconfig | 1 - arch/m68k/platform/527x/config.c | 2 -- 2 files changed, 3 deletions(-) diff --git a/arch/m68k/configs/m5275evb_defconfig b/arch/m68k/configs/m5275evb_defconfig index 33c32ae..a1230e8 100644 --- a/arch/m68k/configs/m5275evb_defconfig +++ b/arch/m68k/configs/m5275evb_defconfig @@ -49,7 +49,6 @@ CONFIG_BLK_DEV_RAM=y CONFIG_NETDEVICES=y CONFIG_NET_ETHERNET=y CONFIG_FEC=y -CONFIG_FEC2=y # CONFIG_NETDEV_1000 is not set # CONFIG_NETDEV_10000 is not set CONFIG_PPP=y diff --git a/arch/m68k/platform/527x/config.c b/arch/m68k/platform/527x/config.c index 7ed848c..f91a532 100644 --- a/arch/m68k/platform/527x/config.c +++ b/arch/m68k/platform/527x/config.c @@ -74,9 +74,7 @@ static void __init m527x_fec_init(void) writew(par | 0xf00, MCF_IPSBAR + 0x100082); v = readb(MCF_IPSBAR + 0x100078); writeb(v | 0xc0, MCF_IPSBAR + 0x100078); -#endif -#ifdef CONFIG_FEC2 /* Set multi-function pins to ethernet mode for fec1 */ par = readw(MCF_IPSBAR + 0x100082); writew(par | 0xa0, MCF_IPSBAR + 0x100082); -- cgit v1.1 From fc1a93bd9bad32581bca1e66fb7b3cabad9b3361 Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Mon, 9 Apr 2012 17:49:36 -0400 Subject: intel_ips: Hush the i915 symbols message We can't control order here, and getting it inverted is harmless. So turn this down to dev_info() and leave a note about how to fix it in case userspace is insufficiently automagic. Bugzilla: https://bugzilla.redhat.com/794953 Signed-off-by: Adam Jackson Signed-off-by: Matthew Garrett --- drivers/platform/x86/intel_ips.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_ips.c b/drivers/platform/x86/intel_ips.c index f7ba316e..0ffdb3c 100644 --- a/drivers/platform/x86/intel_ips.c +++ b/drivers/platform/x86/intel_ips.c @@ -1565,7 +1565,7 @@ static int ips_probe(struct pci_dev *dev, const struct pci_device_id *id) ips->poll_turbo_status = true; if (!ips_get_i915_syms(ips)) { - dev_err(&dev->dev, "failed to get i915 symbols, graphics turbo disabled\n"); + dev_info(&dev->dev, "failed to get i915 symbols, graphics turbo disabled until i915 loads\n"); ips->gpu_turbo_enabled = false; } else { dev_dbg(&dev->dev, "graphics turbo enabled\n"); -- cgit v1.1 From d62d421b071b08249361044d8e56c8b5c3ed6aa7 Mon Sep 17 00:00:00 2001 From: Martin Nyhus Date: Thu, 15 Mar 2012 18:25:48 +0100 Subject: dell-laptop: Terminate quirks list properly Add missing DMI_NONE entry to end of the quirks list so dmi_check_system() won't read past the end of the list. Signed-off-by: Martin Nyhus Signed-off-by: Matthew Garrett --- drivers/platform/x86/dell-laptop.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c index a05fc9c..e6c08ee 100644 --- a/drivers/platform/x86/dell-laptop.c +++ b/drivers/platform/x86/dell-laptop.c @@ -212,6 +212,7 @@ static struct dmi_system_id __devinitdata dell_quirks[] = { }, .driver_data = &quirk_dell_vostro_v130, }, + { } }; static struct calling_interface_buffer *buffer; -- cgit v1.1 From f55205f4d4a8823a11bb8b37ef2ecbd78fb09463 Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Wed, 11 Apr 2012 20:53:58 +0800 Subject: regulator: Fix the logic to ensure new voltage setting in valid range I think this is a typo. To ensure new voltage setting won't greater than desc->max, the equation should be desc->min + desc->step * new_val <= desc->max. Signed-off-by: Axel Lin Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/regulator/max8997.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/regulator/max8997.c b/drivers/regulator/max8997.c index 9657929..17a58c5 100644 --- a/drivers/regulator/max8997.c +++ b/drivers/regulator/max8997.c @@ -684,7 +684,7 @@ static int max8997_set_voltage_buck(struct regulator_dev *rdev, } new_val++; - } while (desc->min + desc->step + new_val <= desc->max); + } while (desc->min + desc->step * new_val <= desc->max); new_idx = tmp_idx; new_val = tmp_val; -- cgit v1.1 From e7c72d888dac2c81003401d663bd8abd68e7c5cd Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Tue, 17 Apr 2012 14:13:45 +0300 Subject: perf tools: Add 'G' and 'H' modifiers to event parsing They were dropped during conversion of event parser. Add test case to make sure this will not happen again. Signed-off-by: Gleb Natapov Acked-by: Jiri Olsa Cc: Avi Kivity Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Jiri Olsa Link: http://lkml.kernel.org/r/20120417111345.GK11918@redhat.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 30 ++++++++++++++++++++++++++++++ tools/perf/util/parse-events.l | 2 +- 2 files changed, 31 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 1c5b980..223ffdc 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -851,6 +851,28 @@ static int test__checkevent_symbolic_name_modifier(struct perf_evlist *evlist) return test__checkevent_symbolic_name(evlist); } +static int test__checkevent_exclude_host_modifier(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = list_entry(evlist->entries.next, + struct perf_evsel, node); + + TEST_ASSERT_VAL("wrong exclude guest", !evsel->attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", evsel->attr.exclude_host); + + return test__checkevent_symbolic_name(evlist); +} + +static int test__checkevent_exclude_guest_modifier(struct perf_evlist *evlist) +{ + struct perf_evsel *evsel = list_entry(evlist->entries.next, + struct perf_evsel, node); + + TEST_ASSERT_VAL("wrong exclude guest", evsel->attr.exclude_guest); + TEST_ASSERT_VAL("wrong exclude host", !evsel->attr.exclude_host); + + return test__checkevent_symbolic_name(evlist); +} + static int test__checkevent_symbolic_alias_modifier(struct perf_evlist *evlist) { struct perf_evsel *evsel = list_entry(evlist->entries.next, @@ -1091,6 +1113,14 @@ static struct test__event_st { .name = "r1,syscalls:sys_enter_open:k,1:1:hp", .check = test__checkevent_list, }, + { + .name = "instructions:G", + .check = test__checkevent_exclude_host_modifier, + }, + { + .name = "instructions:H", + .check = test__checkevent_exclude_guest_modifier, + }, }; #define TEST__EVENTS_CNT (sizeof(test__events) / sizeof(struct test__event_st)) diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l index 05d766e..1fcf1bb 100644 --- a/tools/perf/util/parse-events.l +++ b/tools/perf/util/parse-events.l @@ -54,7 +54,7 @@ num_dec [0-9]+ num_hex 0x[a-fA-F0-9]+ num_raw_hex [a-fA-F0-9]+ name [a-zA-Z_*?][a-zA-Z0-9_*?]* -modifier_event [ukhp]{1,5} +modifier_event [ukhpGH]{1,8} modifier_bp [rwx] %% -- cgit v1.1 From 5509fea59bb1bad4ead7d9a194cb4555c1350e1c Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Fri, 6 Apr 2012 12:52:53 +0200 Subject: leds-atmel-pwm.c: Make pwmled_probe() __devinit Commit 892a884 (leds: convert led platform drivers to module_platform_driver) is omitting the section mismatch error: so change annotation of the probe function to __devinit instead of __init. Signed-off-by: Nicolas Ferre Cc: Richard Purdie Cc: Andrew Morton --- drivers/leds/leds-atmel-pwm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/leds/leds-atmel-pwm.c b/drivers/leds/leds-atmel-pwm.c index 800243b..64ad702 100644 --- a/drivers/leds/leds-atmel-pwm.c +++ b/drivers/leds/leds-atmel-pwm.c @@ -35,7 +35,7 @@ static void pwmled_brightness(struct led_classdev *cdev, enum led_brightness b) * NOTE: we reuse the platform_data structure of GPIO leds, * but repurpose its "gpio" number as a PWM channel number. */ -static int __init pwmled_probe(struct platform_device *pdev) +static int __devinit pwmled_probe(struct platform_device *pdev) { const struct gpio_led_platform_data *pdata; struct pwmled *leds; -- cgit v1.1 From b548a27b2e92ad171cc8b8d00bac5e15bb2d2956 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Fri, 6 Apr 2012 14:35:38 +0200 Subject: USB: ohci-at91: change annotations for probe/remove functions Add __devinit and __devexit on *_probe() and *_remove() functions with proper modification of struct platform_driver. Signed-off-by: Nicolas Ferre Acked-by: Alan Stern Cc: linux-usb@vger.kernel.org --- drivers/usb/host/ohci-at91.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index 09f597a..13ebeca 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -94,7 +94,7 @@ static void at91_stop_hc(struct platform_device *pdev) /*-------------------------------------------------------------------------*/ -static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); +static void __devexit usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); /* configure so an HC device and id are always provided */ /* always called with process context; sleeping is OK */ @@ -108,7 +108,7 @@ static void usb_hcd_at91_remove (struct usb_hcd *, struct platform_device *); * then invokes the start() method for the HCD associated with it * through the hotplug entry's driver_data. */ -static int usb_hcd_at91_probe(const struct hc_driver *driver, +static int __devinit usb_hcd_at91_probe(const struct hc_driver *driver, struct platform_device *pdev) { int retval; @@ -203,7 +203,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver, * context, "rmmod" or something similar. * */ -static void usb_hcd_at91_remove(struct usb_hcd *hcd, +static void __devexit usb_hcd_at91_remove(struct usb_hcd *hcd, struct platform_device *pdev) { usb_remove_hcd(hcd); @@ -545,7 +545,7 @@ static int __devinit ohci_at91_of_init(struct platform_device *pdev) /*-------------------------------------------------------------------------*/ -static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) +static int __devinit ohci_hcd_at91_drv_probe(struct platform_device *pdev) { struct at91_usbh_data *pdata; int i; @@ -620,7 +620,7 @@ static int ohci_hcd_at91_drv_probe(struct platform_device *pdev) return usb_hcd_at91_probe(&ohci_at91_hc_driver, pdev); } -static int ohci_hcd_at91_drv_remove(struct platform_device *pdev) +static int __devexit ohci_hcd_at91_drv_remove(struct platform_device *pdev) { struct at91_usbh_data *pdata = pdev->dev.platform_data; int i; @@ -696,7 +696,7 @@ MODULE_ALIAS("platform:at91_ohci"); static struct platform_driver ohci_hcd_at91_driver = { .probe = ohci_hcd_at91_drv_probe, - .remove = ohci_hcd_at91_drv_remove, + .remove = __devexit_p(ohci_hcd_at91_drv_remove), .shutdown = usb_hcd_platform_shutdown, .suspend = ohci_hcd_at91_drv_suspend, .resume = ohci_hcd_at91_drv_resume, -- cgit v1.1 From 70756027b0a01cb0bebf2e20d8d28e8103025734 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 16 Apr 2012 10:58:12 +0200 Subject: USB: gadget/at91_udc: add gpio_to_irq() function to vbus interrupt Now that we are using irqdomains, we need to convert GPIO pins to Linux IRQ numbers using the gpio_to_irq() function. This call is added to request/free_irq calls. Signed-off-by: Nicolas Ferre Acked-by: Felipe Balbi Cc: linux-usb@vger.kernel.org --- drivers/usb/gadget/at91_udc.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 0c935d7..9d7bcd9 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -1863,8 +1863,8 @@ static int __devinit at91udc_probe(struct platform_device *pdev) mod_timer(&udc->vbus_timer, jiffies + VBUS_POLL_TIMEOUT); } else { - if (request_irq(udc->board.vbus_pin, at91_vbus_irq, - 0, driver_name, udc)) { + if (request_irq(gpio_to_irq(udc->board.vbus_pin), + at91_vbus_irq, 0, driver_name, udc)) { DBG("request vbus irq %d failed\n", udc->board.vbus_pin); retval = -EBUSY; @@ -1886,7 +1886,7 @@ static int __devinit at91udc_probe(struct platform_device *pdev) return 0; fail4: if (gpio_is_valid(udc->board.vbus_pin) && !udc->board.vbus_polled) - free_irq(udc->board.vbus_pin, udc); + free_irq(gpio_to_irq(udc->board.vbus_pin), udc); fail3: if (gpio_is_valid(udc->board.vbus_pin)) gpio_free(udc->board.vbus_pin); @@ -1924,7 +1924,7 @@ static int __exit at91udc_remove(struct platform_device *pdev) device_init_wakeup(&pdev->dev, 0); remove_debug_file(udc); if (gpio_is_valid(udc->board.vbus_pin)) { - free_irq(udc->board.vbus_pin, udc); + free_irq(gpio_to_irq(udc->board.vbus_pin), udc); gpio_free(udc->board.vbus_pin); } free_irq(udc->udp_irq, udc); -- cgit v1.1 From f898fed0c27b2d46c3d8331e7825c25b6432b9f4 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Thu, 15 Mar 2012 11:31:58 +0100 Subject: dmaengine: Kconfig: fix Atmel at_hdmac entry Remove SoC dependency and make it generic for every Atmel ARM AT91. That will allow to select this driver for newer chips. Keep dependency on AT91 because of the use of an header file located in include/mach directory. Modify the comment to reflect this. Signed-off-by: Nicolas Ferre Acked-by: Vinod Koul --- drivers/dma/Kconfig | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index cf9da36..ef378b5 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -91,11 +91,10 @@ config DW_DMAC config AT_HDMAC tristate "Atmel AHB DMA support" - depends on ARCH_AT91SAM9RL || ARCH_AT91SAM9G45 + depends on ARCH_AT91 select DMA_ENGINE help - Support the Atmel AHB DMA controller. This can be integrated in - chips such as the Atmel AT91SAM9RL. + Support the Atmel AHB DMA controller. config FSL_DMA tristate "Freescale Elo and Elo Plus DMA support" -- cgit v1.1 From 92c38702e98e58438c3760ebb279c40bbca8bd5f Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 16 Apr 2012 12:12:09 -0700 Subject: rcu: Permit call_rcu() from CPU_DYING notifiers As of: 29494be71afe ("rcu,cleanup: simplify the code when cpu is dying") RCU adopts callbacks from the dying CPU in its CPU_DYING notifier, which means that any callbacks posted by later CPU_DYING notifiers are ignored until the CPU comes back online. A WARN_ON_ONCE() was added to __call_rcu() by: e56014000816 ("rcu: Simplify offline processing") to check for this condition. Although this condition did not trigger (at least as far as I know) during -next testing, it did recently trigger in mainline: https://lkml.org/lkml/2012/4/2/34 What is needed longer term is for RCU's CPU_DEAD notifier to adopt any callbacks that were posted by CPU_DYING notifiers, however, the Linux kernel has been running with this sort of thing happening for quite some time. So the only thing that qualifies as a regression is the WARN_ON_ONCE(), which this commit removes. Making RCU's CPU_DEAD notifier adopt callbacks posted by CPU_DYING notifiers is a topic for the 3.5 release of the Linux kernel. Reported-by: Sergey Senozhatsky Signed-off-by: Paul E. McKenney Signed-off-by: Paul E. McKenney --- kernel/rcutree.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 1050d6d..d0c5baf 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -1820,7 +1820,6 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu), * a quiescent state betweentimes. */ local_irq_save(flags); - WARN_ON_ONCE(cpu_is_offline(smp_processor_id())); rdp = this_cpu_ptr(rsp->rda); /* Add the callback to our list. */ -- cgit v1.1 From 63878acfafbc7a6ff90a2f8b3e31f0889bc61af6 Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Sat, 7 Apr 2012 00:53:21 +0300 Subject: ARM: OMAP: sram: fix BUG in dpll code for !PM case _omap3_sram_configure_core_dpll is called when SDRC is reprogrammed, which is done regardless of CONFIG_PM setting, so we always need it's setup code too. Without this, we hit a BUG() on OMAP3 when kernel is built without CONFIG_PM: Reprogramming SDRC clock to 332000000 Hz ------------[ cut here ]------------ kernel BUG at arch/arm/plat-omap/sram.c:342! Internal error: Oops - BUG: 0 [#1] ARM ... [] (omap3_configure_core_dpll+0x68/0x6c) from [] (omap3_core_dpll_m2_set_rate+0x1) [] (omap3_core_dpll_m2_set_rate+0x138/0x1b0) from [] (omap2_clk_set_rate+0x14/0x2) [] (omap2_clk_set_rate+0x14/0x20) from [] (clk_set_rate+0x54/0x74) [] (clk_set_rate+0x54/0x74) from [] (omap_sdrc_init+0x70/0x90) [] (omap_sdrc_init+0x70/0x90) from [] (omap3pandora_init+0x11c/0x164) [] (omap3pandora_init+0x11c/0x164) from [] (customize_machine+0x20/0x28) [] (customize_machine+0x20/0x28) from [] (do_one_initcall+0xa0/0x16c) [] (do_one_initcall+0xa0/0x16c) from [] (kernel_init+0x104/0x1ac) [] (kernel_init+0x104/0x1ac) from [] (kernel_thread_exit+0x0/0x8) Signed-off-by: Grazvydas Ignotas Signed-off-by: Tony Lindgren --- arch/arm/plat-omap/sram.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c index eec98af..f9a8c53 100644 --- a/arch/arm/plat-omap/sram.c +++ b/arch/arm/plat-omap/sram.c @@ -348,7 +348,6 @@ u32 omap3_configure_core_dpll(u32 m2, u32 unlock_dll, u32 f, u32 inc, sdrc_actim_ctrl_b_1, sdrc_mr_1); } -#ifdef CONFIG_PM void omap3_sram_restore_context(void) { omap_sram_ceil = omap_sram_base + omap_sram_size; @@ -358,17 +357,18 @@ void omap3_sram_restore_context(void) omap3_sram_configure_core_dpll_sz); omap_push_sram_idle(); } -#endif /* CONFIG_PM */ - -#endif /* CONFIG_ARCH_OMAP3 */ static inline int omap34xx_sram_init(void) { -#if defined(CONFIG_ARCH_OMAP3) && defined(CONFIG_PM) omap3_sram_restore_context(); -#endif return 0; } +#else +static inline int omap34xx_sram_init(void) +{ + return 0; +} +#endif /* CONFIG_ARCH_OMAP3 */ static inline int am33xx_sram_init(void) { -- cgit v1.1 From e8e937be971d706061dc56220ff3605ab77622a7 Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Tue, 3 Apr 2012 18:05:47 +0100 Subject: xen/gntdev: do not set VM_PFNMAP Since we are using the m2p_override we do have struct pages corresponding to the user vma mmap'ed by gntdev. Removing the VM_PFNMAP flag makes get_user_pages work on that vma. An example test case would be using a Xen userspace block backend (QDISK) on a file on NFS using O_DIRECT. CC: stable@kernel.org Signed-off-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/gntdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 99d8151..1ffd03b 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -722,7 +722,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma) vma->vm_flags |= VM_RESERVED|VM_DONTEXPAND; if (use_ptemod) - vma->vm_flags |= VM_DONTCOPY|VM_PFNMAP; + vma->vm_flags |= VM_DONTCOPY; vma->vm_private_data = map; -- cgit v1.1 From b960d6c43a63ebd2d8518b328da3816b833ee8cc Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Tue, 27 Mar 2012 14:52:44 +0100 Subject: xen/p2m: m2p_find_override: use list_for_each_entry_safe Use list_for_each_entry_safe and remove the spin_lock acquisition in m2p_find_override. Signed-off-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/p2m.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 1b267e7..7ed8cc3 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -809,21 +809,17 @@ struct page *m2p_find_override(unsigned long mfn) { unsigned long flags; struct list_head *bucket = &m2p_overrides[mfn_hash(mfn)]; - struct page *p, *ret; + struct page *p, *t, *ret; ret = NULL; - spin_lock_irqsave(&m2p_override_lock, flags); - - list_for_each_entry(p, bucket, lru) { + list_for_each_entry_safe(p, t, bucket, lru) { if (page_private(p) == mfn) { ret = p; break; } } - spin_unlock_irqrestore(&m2p_override_lock, flags); - return ret; } -- cgit v1.1 From bce492c04ba8fc66a4ea0a52b181ba255daaaf54 Mon Sep 17 00:00:00 2001 From: "Govindraj.R" Date: Tue, 17 Apr 2012 10:35:47 -0700 Subject: ARM: OMAP2+: UART: Fix incorrect population of default uart pads Commit (7496ba3 ARM: OMAP2+: UART: Add default mux for all uarts) wrongly added muxing of default pads for all uarts. This causes breakage on multiple boards using uart pins for alternate functions. For example, on zoom3 random oopses can be seen with nfsroot as the smsc911x ethernet FIFO timings on GPMC bus are controlled by gpmc_wait2 and gpmc_wait3 pins. This means we can't mux these pads to uart4 functionality as commit 7496ba3 was doing. Not all boards tend to use all uarts and most of unused uart pins are muxed for other purpose. This commit breaks the modules which where trying to use unused uart pins on their boards. So remove the default pad muxing. Note that this is not a complete fix, as we now rely on bootloader set muxing for the uart wake-up events. Further patching is needed to enable wake-up events for uarts that are already muxed to uart mode. Cc: Felipe Balbi Cc: Kevin Hilman Acked-by: Russ Dill Reported-by: Tony Lindgren Signed-off-by: Govindraj.R [tony@atomide.com: updated comments to describe oops on zoom3] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/serial.c | 116 ------------------------------------------- 1 file changed, 116 deletions(-) diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 0cdd359..2e351f5 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -120,124 +120,8 @@ static void omap_uart_set_smartidle(struct platform_device *pdev) {} #endif /* CONFIG_PM */ #ifdef CONFIG_OMAP_MUX -static struct omap_device_pad default_uart1_pads[] __initdata = { - { - .name = "uart1_cts.uart1_cts", - .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - }, - { - .name = "uart1_rts.uart1_rts", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart1_tx.uart1_tx", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart1_rx.uart1_rx", - .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, - .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - .idle = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - }, -}; - -static struct omap_device_pad default_uart2_pads[] __initdata = { - { - .name = "uart2_cts.uart2_cts", - .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - }, - { - .name = "uart2_rts.uart2_rts", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart2_tx.uart2_tx", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart2_rx.uart2_rx", - .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, - .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - .idle = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - }, -}; - -static struct omap_device_pad default_uart3_pads[] __initdata = { - { - .name = "uart3_cts_rctx.uart3_cts_rctx", - .enable = OMAP_PIN_INPUT_PULLUP | OMAP_MUX_MODE0, - }, - { - .name = "uart3_rts_sd.uart3_rts_sd", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart3_tx_irtx.uart3_tx_irtx", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart3_rx_irrx.uart3_rx_irrx", - .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, - .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE0, - .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE0, - }, -}; - -static struct omap_device_pad default_omap36xx_uart4_pads[] __initdata = { - { - .name = "gpmc_wait2.uart4_tx", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "gpmc_wait3.uart4_rx", - .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, - .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE2, - .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE2, - }, -}; - -static struct omap_device_pad default_omap4_uart4_pads[] __initdata = { - { - .name = "uart4_tx.uart4_tx", - .enable = OMAP_PIN_OUTPUT | OMAP_MUX_MODE0, - }, - { - .name = "uart4_rx.uart4_rx", - .flags = OMAP_DEVICE_PAD_REMUX | OMAP_DEVICE_PAD_WAKEUP, - .enable = OMAP_PIN_INPUT | OMAP_MUX_MODE0, - .idle = OMAP_PIN_INPUT | OMAP_MUX_MODE0, - }, -}; - static void omap_serial_fill_default_pads(struct omap_board_data *bdata) { - switch (bdata->id) { - case 0: - bdata->pads = default_uart1_pads; - bdata->pads_cnt = ARRAY_SIZE(default_uart1_pads); - break; - case 1: - bdata->pads = default_uart2_pads; - bdata->pads_cnt = ARRAY_SIZE(default_uart2_pads); - break; - case 2: - bdata->pads = default_uart3_pads; - bdata->pads_cnt = ARRAY_SIZE(default_uart3_pads); - break; - case 3: - if (cpu_is_omap44xx()) { - bdata->pads = default_omap4_uart4_pads; - bdata->pads_cnt = - ARRAY_SIZE(default_omap4_uart4_pads); - } else if (cpu_is_omap3630()) { - bdata->pads = default_omap36xx_uart4_pads; - bdata->pads_cnt = - ARRAY_SIZE(default_omap36xx_uart4_pads); - } - break; - default: - break; - } } #else static void omap_serial_fill_default_pads(struct omap_board_data *bdata) {} -- cgit v1.1 From 973ef21a676e55a8e1a100a6e109f0c116ea75e8 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 16 Apr 2012 14:56:48 +0200 Subject: mac80211: fix truncated packets in cooked monitor rx Cooked monitor rx was recently changed to use ieee80211_add_rx_radiotap_header instead of generating only limited radiotap information. ieee80211_add_rx_radiotap_header assumes that FCS info is still present if the hardware supports receiving it, however when cooked monitor rx packets are processed, FCS info has already been stripped. Fix this by adding an extra flag indicating FCS presence. Signed-off-by: Felix Fietkau Signed-off-by: John W. Linville --- net/mac80211/rx.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c index bcfe8c7..d64e285 100644 --- a/net/mac80211/rx.c +++ b/net/mac80211/rx.c @@ -103,7 +103,7 @@ static void ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, struct sk_buff *skb, struct ieee80211_rate *rate, - int rtap_len) + int rtap_len, bool has_fcs) { struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb); struct ieee80211_radiotap_header *rthdr; @@ -134,7 +134,7 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local, } /* IEEE80211_RADIOTAP_FLAGS */ - if (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) + if (has_fcs && (local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS)) *pos |= IEEE80211_RADIOTAP_F_FCS; if (status->flag & (RX_FLAG_FAILED_FCS_CRC | RX_FLAG_FAILED_PLCP_CRC)) *pos |= IEEE80211_RADIOTAP_F_BADFCS; @@ -294,7 +294,8 @@ ieee80211_rx_monitor(struct ieee80211_local *local, struct sk_buff *origskb, } /* prepend radiotap information */ - ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom); + ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom, + true); skb_reset_mac_header(skb); skb->ip_summed = CHECKSUM_UNNECESSARY; @@ -2571,7 +2572,8 @@ static void ieee80211_rx_cooked_monitor(struct ieee80211_rx_data *rx, goto out_free_skb; /* prepend radiotap information */ - ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom); + ieee80211_add_rx_radiotap_header(local, skb, rate, needed_headroom, + false); skb_set_mac_header(skb, 0); skb->ip_summed = CHECKSUM_UNNECESSARY; -- cgit v1.1 From 15fae50a9bd28a9fe490b053ff4353f8a38ea5a0 Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Mon, 16 Apr 2012 12:03:35 -0700 Subject: MAINTAINERS: Add maintainer for iwlwifi Add Johannes Berg as the primary maintainer for iwlwifi driver Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 6010b9d..f6dfba3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3592,6 +3592,7 @@ S: Supported F: drivers/net/wireless/iwlegacy/ INTEL WIRELESS WIFI LINK (iwlwifi) +M: Johannes Berg M: Wey-Yi Guy M: Intel Linux Wireless L: linux-wireless@vger.kernel.org -- cgit v1.1 From 6741e7f048dacc92e37c5d724ff5c64e45f6c2c9 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Mon, 16 Apr 2012 22:10:42 +0200 Subject: mac80211: fix logic error in ibss channel type check The broken check leads to rate control attempting to use HT40 while the driver is configured for HT20. This leads to interesting hardware issues. HT40 can only be used if the channel type is either HT40- or HT40+ and if the channel type of the cell matches the local type. Signed-off-by: Felix Fietkau Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- net/mac80211/ibss.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 33fd8d9..cef7c29 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -457,8 +457,8 @@ static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, * fall back to HT20 if we don't use or use * the other extension channel */ - if ((channel_type == NL80211_CHAN_HT40MINUS || - channel_type == NL80211_CHAN_HT40PLUS) && + if (!(channel_type == NL80211_CHAN_HT40MINUS || + channel_type == NL80211_CHAN_HT40PLUS) || channel_type != sdata->u.ibss.channel_type) sta_ht_cap_new.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; -- cgit v1.1 From fd09c85fe15aa66a69f091ba178817d5ef82476d Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Tue, 17 Apr 2012 08:34:50 +0530 Subject: ath9k: Fix TX fragmentation Assigning sequence number for frames without taking care of the fragment field breaks transmission of fragmented frames. Fix this by assigning the fragment number properly. Signed-off-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/xmit.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c index 834e6bc..23eaa1b 100644 --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -1820,6 +1820,7 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, struct ath_frame_info *fi = get_frame_info(skb); struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; struct ath_buf *bf; + int fragno; u16 seqno; bf = ath_tx_get_buffer(sc); @@ -1831,9 +1832,16 @@ static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc, ATH_TXBUF_RESET(bf); if (tid) { + fragno = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; seqno = tid->seq_next; hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT); - INCR(tid->seq_next, IEEE80211_SEQ_MAX); + + if (fragno) + hdr->seq_ctrl |= cpu_to_le16(fragno); + + if (!ieee80211_has_morefrags(hdr->frame_control)) + INCR(tid->seq_next, IEEE80211_SEQ_MAX); + bf->bf_state.seqno = seqno; } -- cgit v1.1 From 5ae256dcd91bf308826a4ac19598b27ebb86a536 Mon Sep 17 00:00:00 2001 From: Santosh Shilimkar Date: Fri, 13 Apr 2012 23:25:04 +0530 Subject: ARM: OMAP: serial: Fix the ocp smart idlemode handling bug The current serial UART code, while fidling with ocp idlemode bits, forget about the smart idle wakeup bit even if it is supported by UART IP block. This will lead to missing the module wakeup on OMAP's where the smart idle wakeup is supported. This was the root cause of the console sluggishness issue, I have been observing on OMAP4 devices and also can be potential reason for some other UART wakeup issues. Signed-off-by: Santosh Shilimkar Acked-by: Kevin Hilman Acked-by: Govindraj.R Reviewed-by: Paul Walmsley Cc: stable@vger.kernel.org Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/serial.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/serial.c b/arch/arm/mach-omap2/serial.c index 2e351f5..9fc2f44 100644 --- a/arch/arm/mach-omap2/serial.c +++ b/arch/arm/mach-omap2/serial.c @@ -108,8 +108,14 @@ static void omap_uart_set_noidle(struct platform_device *pdev) static void omap_uart_set_smartidle(struct platform_device *pdev) { struct omap_device *od = to_omap_device(pdev); + u8 idlemode; - omap_hwmod_set_slave_idlemode(od->hwmods[0], HWMOD_IDLEMODE_SMART); + if (od->hwmods[0]->class->sysc->idlemodes & SIDLE_SMART_WKUP) + idlemode = HWMOD_IDLEMODE_SMART_WKUP; + else + idlemode = HWMOD_IDLEMODE_SMART; + + omap_hwmod_set_slave_idlemode(od->hwmods[0], idlemode); } #else -- cgit v1.1 From a7dbb603423d499acacefb5fad65d2b406f16370 Mon Sep 17 00:00:00 2001 From: Liam Girdwood Date: Tue, 17 Apr 2012 18:00:11 +0100 Subject: ASoC: core: Fix card RTD count for deferred probe. Currently we increment the number of RTD's per card during the DAI link bind. This can cause an incorrect RTD count when we cannot find a component and defer the probe (and hence perform the DAI link bind for the card again). Fix the count so that it is cleared before every card registration and bind attempt. Signed-off-by: Liam Girdwood Signed-off-by: Mark Brown --- sound/soc/soc-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 8d2ebf5..3a4e93e 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3119,6 +3119,7 @@ int snd_soc_register_card(struct snd_soc_card *card) GFP_KERNEL); if (card->rtd == NULL) return -ENOMEM; + card->num_rtd = 0; card->rtd_aux = &card->rtd[card->num_links]; for (i = 0; i < card->num_links; i++) -- cgit v1.1 From 6aaec67da1e41a0752a2b903b989e73b9f02e182 Mon Sep 17 00:00:00 2001 From: Paul Walmsley Date: Tue, 10 Apr 2012 18:36:02 -0600 Subject: ARM: OMAP1: DMTIMER: fix broken timer clock source selection DMTIMER source selection on OMAP1 is broken. omap1_dm_timer_set_src() tries to use __raw_{read,write}l() to read from and write to physical addresses, but those functions take virtual addresses. sparse caught this: arch/arm/mach-omap1/timer.c:50:13: warning: incorrect type in argument 1 (different base types) arch/arm/mach-omap1/timer.c:50:13: expected void const volatile [noderef] * arch/arm/mach-omap1/timer.c:50:13: got unsigned int arch/arm/mach-omap1/timer.c:52:9: warning: incorrect type in argument 1 (different base types) arch/arm/mach-omap1/timer.c:52:9: expected void const volatile [noderef] * arch/arm/mach-omap1/timer.c:52:9: got unsigned int Fix by using omap_{read,writel}(), just like the other users of the MOD_CONF_CTRL_1 register in the OMAP1 codebase. Of course, in the long term, removing omap_{read,write}l() is the appropriate thing to do; but this will take some work to do this cleanly. Looks like this was caused by 97933d6 (ARM: OMAP1: dmtimer: conversion to platform devices) that dangerously moved code and changed it in the same patch. Signed-off-by: Paul Walmsley Cc: Tarun Kanti DebBarma Cc: stable@vger.kernel.org [tony@atomide.com: updated comments to include the breaking commit] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/timer.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-omap1/timer.c b/arch/arm/mach-omap1/timer.c index 6e90665..fb202af 100644 --- a/arch/arm/mach-omap1/timer.c +++ b/arch/arm/mach-omap1/timer.c @@ -47,9 +47,9 @@ static int omap1_dm_timer_set_src(struct platform_device *pdev, int n = (pdev->id - 1) << 1; u32 l; - l = __raw_readl(MOD_CONF_CTRL_1) & ~(0x03 << n); + l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n); l |= source << n; - __raw_writel(l, MOD_CONF_CTRL_1); + omap_writel(l, MOD_CONF_CTRL_1); return 0; } -- cgit v1.1 From 34948a947d1a576c10afee6d14792fd237549577 Mon Sep 17 00:00:00 2001 From: Benjamin Poirier Date: Fri, 6 Apr 2012 07:20:21 +0000 Subject: ixgbe: add missing rtnl_lock in PM resume path Upon resume from standby, ixgbe may trigger the ASSERT_RTNL() in netif_set_real_num_tx_queues(). The call stack is: netif_set_real_num_tx_queues ixgbe_set_num_queues ixgbe_init_interrupt_scheme ixgbe_resume Signed-off-by: Benjamin Poirier Tested-by: Stephen Ko Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index dac7c01..9e2be8c 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4836,7 +4836,9 @@ static int ixgbe_resume(struct pci_dev *pdev) pci_wake_from_d3(pdev, false); + rtnl_lock(); err = ixgbe_init_interrupt_scheme(adapter); + rtnl_unlock(); if (err) { e_dev_err("Cannot initialize interrupts for device\n"); return err; -- cgit v1.1 From b2db497eb25510052fc2d3152384f964b3312004 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Sat, 7 Apr 2012 04:57:29 +0000 Subject: ixgbe: Identify FCoE rings earlier to resolve memory corruption w/ FCoE This patch makes it so that we identify FCoE rings earlier than ixgbe_set_rx_buffer_len. Instead we identify the Rx FCoE rings at allocation time in ixgbe_alloc_q_vector. The motivation behind this change is to avoid memory corruption when FCoE is enabled. Without this change we were initializing the rings at 0, and 2K on systems with 4K pages, then when we bumped the buffer size to 4K with order 1 pages we were accessing offsets 2K and 6K instead of 0 and 4K. This was resulting in memory corruptions. Signed-off-by: Alexander Duyck Acked-by: Yi Zou Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c | 10 ++++++++++ drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 8 -------- 2 files changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c index 027d7a7..ed1b47d 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c @@ -622,6 +622,16 @@ static int ixgbe_alloc_q_vector(struct ixgbe_adapter *adapter, int v_idx, if (adapter->hw.mac.type == ixgbe_mac_82599EB) set_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state); +#ifdef IXGBE_FCOE + if (adapter->netdev->features & NETIF_F_FCOE_MTU) { + struct ixgbe_ring_feature *f; + f = &adapter->ring_feature[RING_F_FCOE]; + if ((rxr_idx >= f->mask) && + (rxr_idx < f->mask + f->indices)) + set_bit(__IXGBE_RX_FCOE_BUFSZ, &ring->state); + } + +#endif /* IXGBE_FCOE */ /* apply Rx specific ring traits */ ring->count = adapter->rx_ring_count; ring->queue_index = rxr_idx; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 9e2be8c..a7f3cd8 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -3154,14 +3154,6 @@ static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) set_ring_rsc_enabled(rx_ring); else clear_ring_rsc_enabled(rx_ring); -#ifdef IXGBE_FCOE - if (netdev->features & NETIF_F_FCOE_MTU) { - struct ixgbe_ring_feature *f; - f = &adapter->ring_feature[RING_F_FCOE]; - if ((i >= f->mask) && (i < f->mask + f->indices)) - set_bit(__IXGBE_RX_FCOE_BUFSZ, &rx_ring->state); - } -#endif /* IXGBE_FCOE */ } } -- cgit v1.1 From 8963c487a80b4688c9e68dcc504a90074aacc145 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 17 Apr 2012 15:22:39 -0400 Subject: USB: fix deadlock in bConfigurationValue attribute method This patch (as154) fixes a self-deadlock that occurs when userspace writes to the bConfigurationValue sysfs attribute for a hub with children. The task tries to lock the bandwidth_mutex at a time when it already owns the lock: The attribute's method calls usb_set_configuration(), which calls usb_disable_device() with the bandwidth_mutex held. usb_disable_device() unregisters the existing interfaces, which causes the hub driver to be unbound. The hub_disconnect() routine calls hub_quiesce(), which calls usb_disconnect() for each of the hub's children. usb_disconnect() attempts to acquire the bandwidth_mutex around a call to usb_disable_device(). The solution is to make usb_disable_device() acquire the mutex for itself instead of requiring the caller to hold it. Then the mutex can cover only the bandwidth deallocation operation and not the region where the interfaces are unregistered. This has the potential to change system behavior slightly when a config change races with another config or altsetting change. Some of the bandwidth released from the old config might get claimed by the other config or altsetting, make it impossible to restore the old config in case of a failure. But since we don't try to recover from config-change failures anyway, this doesn't matter. [This should be marked for stable kernels that contain the commit fccf4e86200b8f5edd9a65da26f150e32ba79808 "USB: Free bandwidth when usb_disable_device is called." That commit was marked for stable kernels as old as 2.6.32.] Signed-off-by: Alan Stern Signed-off-by: Sarah Sharp Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hub.c | 3 --- drivers/usb/core/message.c | 6 +++--- 2 files changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index a2aa9d6..ec6c97d 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1667,7 +1667,6 @@ void usb_disconnect(struct usb_device **pdev) { struct usb_device *udev = *pdev; int i; - struct usb_hcd *hcd = bus_to_hcd(udev->bus); /* mark the device as inactive, so any further urb submissions for * this device (and any of its children) will fail immediately. @@ -1690,9 +1689,7 @@ void usb_disconnect(struct usb_device **pdev) * so that the hardware is now fully quiesced. */ dev_dbg (&udev->dev, "unregistering device\n"); - mutex_lock(hcd->bandwidth_mutex); usb_disable_device(udev, 0); - mutex_unlock(hcd->bandwidth_mutex); usb_hcd_synchronize_unlinks(udev); usb_remove_ep_devs(&udev->ep0); diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index aed3e07..ca717da 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1136,8 +1136,6 @@ void usb_disable_interface(struct usb_device *dev, struct usb_interface *intf, * Deallocates hcd/hardware state for the endpoints (nuking all or most * pending urbs) and usbcore state for the interfaces, so that usbcore * must usb_set_configuration() before any interfaces could be used. - * - * Must be called with hcd->bandwidth_mutex held. */ void usb_disable_device(struct usb_device *dev, int skip_ep0) { @@ -1190,7 +1188,9 @@ void usb_disable_device(struct usb_device *dev, int skip_ep0) usb_disable_endpoint(dev, i + USB_DIR_IN, false); } /* Remove endpoints from the host controller internal state */ + mutex_lock(hcd->bandwidth_mutex); usb_hcd_alloc_bandwidth(dev, NULL, NULL, NULL); + mutex_unlock(hcd->bandwidth_mutex); /* Second pass: remove endpoint pointers */ } for (i = skip_ep0; i < 16; ++i) { @@ -1750,7 +1750,6 @@ free_interfaces: /* if it's already configured, clear out old state first. * getting rid of old interfaces means unbinding their drivers. */ - mutex_lock(hcd->bandwidth_mutex); if (dev->state != USB_STATE_ADDRESS) usb_disable_device(dev, 1); /* Skip ep0 */ @@ -1763,6 +1762,7 @@ free_interfaces: * host controller will not allow submissions to dropped endpoints. If * this call fails, the device state is unchanged. */ + mutex_lock(hcd->bandwidth_mutex); ret = usb_hcd_alloc_bandwidth(dev, cp, NULL, NULL); if (ret < 0) { mutex_unlock(hcd->bandwidth_mutex); -- cgit v1.1 From e65cdfae71cecec0fcd43a3f9ac8b5e4ae52db08 Mon Sep 17 00:00:00 2001 From: Xi Wang Date: Mon, 9 Apr 2012 15:48:55 -0400 Subject: usb: usbtest: avoid integer overflow in test_ctrl_queue() Avoid overflowing context.count = param->sglen * param->iterations, where both `sglen' and `iterations' are from userspace. | test_ctrl_queue() | usbtest_ioctl() Keep -EOPNOTSUPP for error code. Signed-off-by: Xi Wang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usbtest.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 959145b..967254a 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -904,6 +904,9 @@ test_ctrl_queue(struct usbtest_dev *dev, struct usbtest_param *param) struct ctrl_ctx context; int i; + if (param->sglen == 0 || param->iterations > UINT_MAX / param->sglen) + return -EOPNOTSUPP; + spin_lock_init(&context.lock); context.dev = dev; init_completion(&context.complete); @@ -1981,8 +1984,6 @@ usbtest_ioctl(struct usb_interface *intf, unsigned int code, void *buf) /* queued control messaging */ case 10: - if (param->sglen == 0) - break; retval = 0; dev_info(&intf->dev, "TEST 10: queue %d control calls, %d times\n", -- cgit v1.1 From 8bde9a62ee74afa89f593c563e926d163b1f6ada Mon Sep 17 00:00:00 2001 From: Xi Wang Date: Mon, 9 Apr 2012 15:48:45 -0400 Subject: usb: usbtest: avoid integer overflow in alloc_sglist() A large `nents' from userspace could overflow the allocation size, leading to memory corruption. | alloc_sglist() | usbtest_ioctl() Use kmalloc_array() to avoid the overflow. Signed-off-by: Xi Wang Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usbtest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 967254a..cac67de 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -423,7 +423,7 @@ alloc_sglist(int nents, int max, int vary) unsigned i; unsigned size = max; - sg = kmalloc(nents * sizeof *sg, GFP_KERNEL); + sg = kmalloc_array(nents, sizeof *sg, GFP_KERNEL); if (!sg) return NULL; sg_init_table(sg, nents); -- cgit v1.1 From 749541d19e70905e3971f2a08335a206a98e4d0c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Tue, 17 Apr 2012 21:37:29 +0200 Subject: USB: sierra: avoid QMI/wwan interface on MC77xx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit These devices have a number of non serial interfaces as well. Use the existing "Direct IP" blacklist to prevent binding to interfaces which are handled by other drivers. We also extend the "Direct IP" blacklist with with interfaces only seen in "QMI" mode, assuming that these devices use the same interface numbers for serial interfaces both in "Direct IP" and in "QMI" mode. Signed-off-by: Bjørn Mork Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/sierra.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index fdd5aa2..8c8bf80 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -221,7 +221,7 @@ static const struct sierra_iface_info typeB_interface_list = { }; /* 'blacklist' of interfaces not served by this driver */ -static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; +static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11, 19, 20 }; static const struct sierra_iface_info direct_ip_interface_blacklist = { .infolen = ARRAY_SIZE(direct_ip_non_serial_ifaces), .ifaceinfo = direct_ip_non_serial_ifaces, @@ -289,7 +289,6 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ - { USB_DEVICE(0x1199, 0x68A2) }, /* Sierra Wireless MC7710 */ /* Sierra Wireless C885 */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */ @@ -299,6 +298,9 @@ static const struct usb_device_id id_table[] = { /* Sierra Wireless HSPA Non-Composite Device */ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */ + { USB_DEVICE(0x1199, 0x68A2), /* Sierra Wireless MC77xx in QMI mode */ + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist }, -- cgit v1.1 From dc75ce9d929aabeb0843a6b1a4ab320e58ba1597 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 17 Apr 2012 15:24:15 -0400 Subject: EHCI: fix criterion for resuming the root hub This patch (as1542) changes the criterion ehci-hcd uses to tell when it needs to resume the controller's root hub. A resume is needed when a port status change is detected, obviously, but only if the root hub is currently suspended. Right now the driver tests whether the root hub is running, and that is not the correct test. In particular, if the controller has died then the root hub should not be restarted. In addition, some buggy hardware occasionally requires the root hub to be running and sending out SOF packets even while it is nominally supposed to be suspended. In the end, the test needs to be changed. Rather than checking whether the root hub is currently running, the driver will now check whether the root hub is currently suspended. This will yield the correct behavior in all cases. Signed-off-by: Alan Stern CC: Peter Chen Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 806cc95..95ca07a 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -910,7 +910,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) pcd_status = status; /* resume root hub? */ - if (!(cmd & CMD_RUN)) + if (ehci->rh_state == EHCI_RH_SUSPENDED) usb_hcd_resume_root_hub(hcd); /* get per-port change detect bits */ -- cgit v1.1 From eb798c641a34ae9cee9fcacfbe5dd40bd7777607 Mon Sep 17 00:00:00 2001 From: Vinit Shenoy Date: Tue, 17 Apr 2012 12:40:13 +0530 Subject: spi/pl022: Fix range checking for bits per word pl022 ssp controller supports word lengths from 4 to 16 (or 32) bits. Currently implemented checks were incorrect. It has following check if (pl022->vendor->max_bpw >= 32) which must be checking for <=. Also error print message is incorrect, that prints "range is from 1 to 16". Fix both these issues. Signed-off-by: Vinit Shenoy Acked-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/spi/spi-pl022.c | 25 +++++++++---------------- 1 file changed, 9 insertions(+), 16 deletions(-) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 09c925a..1ead49d 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1823,9 +1823,12 @@ static int pl022_setup(struct spi_device *spi) } else chip->cs_control = chip_info->cs_control; - if (bits <= 3) { - /* PL022 doesn't support less than 4-bits */ + /* Check bits per word with vendor specific range */ + if ((bits <= 3) || (bits > pl022->vendor->max_bpw)) { status = -ENOTSUPP; + dev_err(&spi->dev, "illegal data size for this controller!\n"); + dev_err(&spi->dev, "This controller can only handle 4 <= n <= %d bit words\n", + pl022->vendor->max_bpw); goto err_config_params; } else if (bits <= 8) { dev_dbg(&spi->dev, "4 <= n <=8 bits per word\n"); @@ -1838,20 +1841,10 @@ static int pl022_setup(struct spi_device *spi) chip->read = READING_U16; chip->write = WRITING_U16; } else { - if (pl022->vendor->max_bpw >= 32) { - dev_dbg(&spi->dev, "17 <= n <= 32 bits per word\n"); - chip->n_bytes = 4; - chip->read = READING_U32; - chip->write = WRITING_U32; - } else { - dev_err(&spi->dev, - "illegal data size for this controller!\n"); - dev_err(&spi->dev, - "a standard pl022 can only handle " - "1 <= n <= 16 bit words\n"); - status = -ENOTSUPP; - goto err_config_params; - } + dev_dbg(&spi->dev, "17 <= n <= 32 bits per word\n"); + chip->n_bytes = 4; + chip->read = READING_U32; + chip->write = WRITING_U32; } /* Now Initialize all register settings required for this chip */ -- cgit v1.1 From b95465c8fcd7c8619ff9ff7bbf8038ab31c7f34b Mon Sep 17 00:00:00 2001 From: Jiri Kosina Date: Mon, 16 Apr 2012 02:02:48 +0000 Subject: arcnet: rimi: Fix device name in debug output arcrimi_probe() calls BUGMSG() before register_netdev() happens. BUGMSG() itself prints dev->name, but as the format string hasn't been expanded by register_netdev() yet, the output contains bogus device name such as arc%d: Given: node 00h, shmem 0h, irq 0 As we don't know the device name yet, just drop the prefix completely from the debugging messages. Reported-by: Steven Young Signed-off-by: Jiri Kosina Signed-off-by: David S. Miller --- drivers/net/arcnet/arc-rimi.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/arcnet/arc-rimi.c b/drivers/net/arcnet/arc-rimi.c index 25197b6..b8b4c7b 100644 --- a/drivers/net/arcnet/arc-rimi.c +++ b/drivers/net/arcnet/arc-rimi.c @@ -89,16 +89,16 @@ static int __init arcrimi_probe(struct net_device *dev) BUGLVL(D_NORMAL) printk(VERSION); BUGLVL(D_NORMAL) printk("E-mail me if you actually test the RIM I driver, please!\n"); - BUGMSG(D_NORMAL, "Given: node %02Xh, shmem %lXh, irq %d\n", + BUGLVL(D_NORMAL) printk("Given: node %02Xh, shmem %lXh, irq %d\n", dev->dev_addr[0], dev->mem_start, dev->irq); if (dev->mem_start <= 0 || dev->irq <= 0) { - BUGMSG(D_NORMAL, "No autoprobe for RIM I; you " + BUGLVL(D_NORMAL) printk("No autoprobe for RIM I; you " "must specify the shmem and irq!\n"); return -ENODEV; } if (dev->dev_addr[0] == 0) { - BUGMSG(D_NORMAL, "You need to specify your card's station " + BUGLVL(D_NORMAL) printk("You need to specify your card's station " "ID!\n"); return -ENODEV; } @@ -109,7 +109,7 @@ static int __init arcrimi_probe(struct net_device *dev) * will be taken. */ if (!request_mem_region(dev->mem_start, MIRROR_SIZE, "arcnet (90xx)")) { - BUGMSG(D_NORMAL, "Card memory already allocated\n"); + BUGLVL(D_NORMAL) printk("Card memory already allocated\n"); return -ENODEV; } return arcrimi_found(dev); -- cgit v1.1 From edfb5d4687d587c9f714799c7ee27517118e12e6 Mon Sep 17 00:00:00 2001 From: Jiri Bohac Date: Mon, 16 Apr 2012 03:34:39 +0000 Subject: ipv6: fix rt6_update_expires Commit 1716a961 (ipv6: fix problem with expired dst cache) broke PMTU discovery. rt6_update_expires() calls dst_set_expires(), which only updates dst->expires if it has not been set previously (expires == 0) or if the new expires is earlier than the current dst->expires. rt6_update_expires() needs to zero rt->dst.expires, otherwise it will contain ivalid data left over from rt->dst.from and will confuse dst_set_expires(). Signed-off-by: Jiri Bohac Signed-off-by: David S. Miller --- include/net/ip6_fib.h | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index c64778f..cb8da1d 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -143,8 +143,14 @@ static inline void rt6_set_expires(struct rt6_info *rt, unsigned long expires) static inline void rt6_update_expires(struct rt6_info *rt, int timeout) { - if (!(rt->rt6i_flags & RTF_EXPIRES) && rt->dst.from) - dst_release(rt->dst.from); + if (!(rt->rt6i_flags & RTF_EXPIRES)) { + if (rt->dst.from) + dst_release(rt->dst.from); + /* dst_set_expires relies on expires == 0 + * if it has not been set previously. + */ + rt->dst.expires = 0; + } dst_set_expires(&rt->dst, timeout); rt->rt6i_flags |= RTF_EXPIRES; -- cgit v1.1 From cda31e10baf47a8a7d9360d9488fb76294be1ca3 Mon Sep 17 00:00:00 2001 From: Jiri Bohac Date: Mon, 16 Apr 2012 03:35:41 +0000 Subject: ipv6: clean up rt6_clean_expires Functionally, this change is a NOP. Semantically, rt6_clean_expires() wants to do rt->dst.from = NULL instead of rt->dst.expires = 0. It is clearing the RTF_EXPIRES flag, so the union is going to be treated as a pointer (dst.from) not a long (dst.expires). Signed-off-by: Jiri Bohac Signed-off-by: David S. Miller --- include/net/ip6_fib.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index cb8da1d..0ae759a 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -129,7 +129,7 @@ static inline void rt6_clean_expires(struct rt6_info *rt) dst_release(rt->dst.from); rt->rt6i_flags &= ~RTF_EXPIRES; - rt->dst.expires = 0; + rt->dst.from = NULL; } static inline void rt6_set_expires(struct rt6_info *rt, unsigned long expires) -- cgit v1.1 From 5b76d0600b2b08eef77f8e9226938b7b6bde3099 Mon Sep 17 00:00:00 2001 From: Christian Riesch Date: Mon, 16 Apr 2012 04:35:25 +0000 Subject: davinci_mdio: Fix MDIO timeout check Under heavy load (flood ping) it is possible for the MDIO timeout to expire before the loop checks the GO bit again. This patch adds an additional check whether the operation was done before actually returning -ETIMEDOUT. To reproduce this bug, flood ping the device, e.g., ping -f -l 1000 After some time, a "timed out waiting for user access" warning may appear. And even worse, link may go down since the PHY reported a timeout. Signed-off-by: Christian Riesch Cc: Cc: Cyril Chemparathy Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_mdio.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/ti/davinci_mdio.c b/drivers/net/ethernet/ti/davinci_mdio.c index 2757c7d..e4e4708 100644 --- a/drivers/net/ethernet/ti/davinci_mdio.c +++ b/drivers/net/ethernet/ti/davinci_mdio.c @@ -181,6 +181,11 @@ static inline int wait_for_user_access(struct davinci_mdio_data *data) __davinci_mdio_reset(data); return -EAGAIN; } + + reg = __raw_readl(®s->user[0].access); + if ((reg & USERACCESS_GO) == 0) + return 0; + dev_err(data->dev, "timed out waiting for user access\n"); return -ETIMEDOUT; } -- cgit v1.1 From 48159f009f5f92ef5962e7c278ac615d74242fa5 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 16 Apr 2012 05:22:12 +0000 Subject: drivers/net/wan/farsync.c: add missing iounmap Free card->mem in the error-handling code since it was successfully allocated just above. Signed-off-by: Julia Lawall Signed-off-by: David S. Miller --- drivers/net/wan/farsync.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c index ebb9f24..1a62318 100644 --- a/drivers/net/wan/farsync.c +++ b/drivers/net/wan/farsync.c @@ -2483,6 +2483,7 @@ fst_add_one(struct pci_dev *pdev, const struct pci_device_id *ent) pr_err("Control memory remap failed\n"); pci_release_regions(pdev); pci_disable_device(pdev); + iounmap(card->mem); kfree(card); return -ENODEV; } -- cgit v1.1 From 4d846f02392a710f9604892ac3329e628e60a230 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 16 Apr 2012 23:28:07 +0000 Subject: tcp: fix tcp_grow_window() for large incoming frames tcp_grow_window() has to grow rcv_ssthresh up to window_clamp, allowing sender to increase its window. tcp_grow_window() still assumes a tcp frame is under MSS, but its no longer true with LRO/GRO. This patch fixes one of the performance issue we noticed with GRO on. Signed-off-by: Eric Dumazet Cc: Neal Cardwell Cc: Tom Herbert Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 9944c1d..3ff36406 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -335,6 +335,7 @@ static void tcp_grow_window(struct sock *sk, const struct sk_buff *skb) incr = __tcp_grow_window(sk, skb); if (incr) { + incr = max_t(int, incr, 2 * skb->len); tp->rcv_ssthresh = min(tp->rcv_ssthresh + incr, tp->window_clamp); inet_csk(sk)->icsk_ack.quick |= 1; -- cgit v1.1 From d3d4f0a025e621b82da08a76df4036d4267739dd Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 17 Apr 2012 14:03:53 +0000 Subject: net/sock.h: fix sk_peek_off kernel-doc warning Fix kernel-doc warning in net/sock.h: Warning(include/net/sock.h:377): No description found for parameter 'sk_peek_off' Signed-off-by: Randy Dunlap Signed-off-by: David S. Miller --- include/net/sock.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/net/sock.h b/include/net/sock.h index a6ba1f8..188532e 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -246,6 +246,7 @@ struct cg_proto; * @sk_user_data: RPC layer private data * @sk_sndmsg_page: cached page for sendmsg * @sk_sndmsg_off: cached offset for sendmsg + * @sk_peek_off: current peek_offset value * @sk_send_head: front of stuff to transmit * @sk_security: used by security modules * @sk_mark: generic packet mark -- cgit v1.1 From b922934d017f1cc831b017913ed7d1a56c558b43 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Mon, 16 Apr 2012 04:43:15 +0000 Subject: netns: do not leak net_generic data on failed init ops_init should free the net_generic data on init failure and __register_pernet_operations should not call ops_free when NET_NS is not enabled. Signed-off-by: Julian Anastasov Reviewed-by: "Eric W. Biederman" Signed-off-by: David S. Miller --- net/core/net_namespace.c | 33 ++++++++++++++++++--------------- 1 file changed, 18 insertions(+), 15 deletions(-) diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 0e950fd..31a5ae5 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -83,21 +83,29 @@ assign: static int ops_init(const struct pernet_operations *ops, struct net *net) { - int err; + int err = -ENOMEM; + void *data = NULL; + if (ops->id && ops->size) { - void *data = kzalloc(ops->size, GFP_KERNEL); + data = kzalloc(ops->size, GFP_KERNEL); if (!data) - return -ENOMEM; + goto out; err = net_assign_generic(net, *ops->id, data); - if (err) { - kfree(data); - return err; - } + if (err) + goto cleanup; } + err = 0; if (ops->init) - return ops->init(net); - return 0; + err = ops->init(net); + if (!err) + return 0; + +cleanup: + kfree(data); + +out: + return err; } static void ops_free(const struct pernet_operations *ops, struct net *net) @@ -448,12 +456,7 @@ static void __unregister_pernet_operations(struct pernet_operations *ops) static int __register_pernet_operations(struct list_head *list, struct pernet_operations *ops) { - int err = 0; - err = ops_init(ops, &init_net); - if (err) - ops_free(ops, &init_net); - return err; - + return ops_init(ops, &init_net); } static void __unregister_pernet_operations(struct pernet_operations *ops) -- cgit v1.1 From f2ec52d4c3698c995c89c579c34d818eab589d8b Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 17 Apr 2012 17:03:42 -0700 Subject: ALSA: fix core/vmaster.c kernel-doc warning Fix kernel-doc warning in sound/core/vmaster.c: Warning(sound/core/vmaster.c:429): No description found for parameter 'private_data' Signed-off-by: Randy Dunlap Signed-off-by: Takashi Iwai --- sound/core/vmaster.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/core/vmaster.c b/sound/core/vmaster.c index 14a286a..8575861 100644 --- a/sound/core/vmaster.c +++ b/sound/core/vmaster.c @@ -419,6 +419,7 @@ EXPORT_SYMBOL(snd_ctl_make_virtual_master); * snd_ctl_add_vmaster_hook - Add a hook to a vmaster control * @kcontrol: vmaster kctl element * @hook: the hook function + * @private_data: the private_data pointer to be saved * * Adds the given hook to the vmaster control element so that it's called * at each time when the value is changed. -- cgit v1.1 From cdf27f373781d8740b874b0b5c18142df32ebb52 Mon Sep 17 00:00:00 2001 From: Paul Mundt Date: Tue, 17 Apr 2012 19:13:04 -0700 Subject: ASoC: fsi: update for dmaengine prep_slave_sg fallout. Leading up to the ->device_prep_slave_sg change in 185ecb5f4fd43911c35956d4cc7d94a1da30417f 'dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic' a generic wrapper was added in place to guard against the API change, though the fsi driver wasn't updated in the process (presumably its dmaengine support hadn't been merged yet at the time). This trivially switches over to the new wrapper and gets it building again. Signed-off-by: Paul Mundt Acked-by: Kuninori Morimoto Signed-off-by: Mark Brown --- sound/soc/sh/fsi.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/sound/soc/sh/fsi.c b/sound/soc/sh/fsi.c index 378cc5b..74ed2df 100644 --- a/sound/soc/sh/fsi.c +++ b/sound/soc/sh/fsi.c @@ -1001,11 +1001,10 @@ static void fsi_dma_do_tasklet(unsigned long data) sg_dma_address(&sg) = buf; sg_dma_len(&sg) = len; - desc = chan->device->device_prep_slave_sg(chan, &sg, 1, dir, - DMA_PREP_INTERRUPT | - DMA_CTRL_ACK); + desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) { - dev_err(dai->dev, "device_prep_slave_sg() fail\n"); + dev_err(dai->dev, "dmaengine_prep_slave_sg() fail\n"); return; } -- cgit v1.1 From 9fd4a50a12d699207c6a65558dfa674a3fd3f150 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 11 Apr 2012 20:24:39 -0300 Subject: ARM: imx_v4_v5_defconfig: Add support for CONFIG_REGULATOR_FIXED_VOLTAGE Add support for CONFIG_REGULATOR_FIXED_VOLTAGE. Without this option the mx27_3ds cannot have the external Ethernet functional due to the need of smsc regulators. Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/configs/imx_v4_v5_defconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/configs/imx_v4_v5_defconfig b/arch/arm/configs/imx_v4_v5_defconfig index b5ac644..6b31cb6 100644 --- a/arch/arm/configs/imx_v4_v5_defconfig +++ b/arch/arm/configs/imx_v4_v5_defconfig @@ -112,6 +112,7 @@ CONFIG_WATCHDOG=y CONFIG_IMX2_WDT=y CONFIG_MFD_MC13XXX=y CONFIG_REGULATOR=y +CONFIG_REGULATOR_FIXED_VOLTAGE=y CONFIG_REGULATOR_MC13783=y CONFIG_REGULATOR_MC13892=y CONFIG_FB=y -- cgit v1.1 From de1de1594faac901670356e09c8c42b73e35ebbf Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 11 Apr 2012 22:12:09 -0300 Subject: ARM: imx27-dt: Fix build due to removal of irq_domain_add_simple() commit 6b783f7c (irq_domain: Remove irq_domain_add_simple() replaced irq_domain_add_simple with irq_domain_add_legacy() Implement this conversion so that imx27-dt can be built again. Reported-by: Chris Ball Signed-off-by: Fabio Estevam Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/imx27-dt.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-imx/imx27-dt.c b/arch/arm/mach-imx/imx27-dt.c index 861ceb8..ed38d03 100644 --- a/arch/arm/mach-imx/imx27-dt.c +++ b/arch/arm/mach-imx/imx27-dt.c @@ -35,7 +35,7 @@ static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = { static int __init imx27_avic_add_irq_domain(struct device_node *np, struct device_node *interrupt_parent) { - irq_domain_add_simple(np, 0); + irq_domain_add_legacy(np, 64, 0, 0, &irq_domain_simple_ops, NULL); return 0; } @@ -44,7 +44,9 @@ static int __init imx27_gpio_add_irq_domain(struct device_node *np, { static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS; - irq_domain_add_simple(np, gpio_irq_base); + gpio_irq_base -= 32; + irq_domain_add_legacy(np, 32, gpio_irq_base, 0, &irq_domain_simple_ops, + NULL); return 0; } -- cgit v1.1 From 4659b7f1fa3eb33a8f9a9dd209a5823602dc6dcf Mon Sep 17 00:00:00 2001 From: Robert Lee Date: Mon, 16 Apr 2012 18:37:48 -0500 Subject: ARM: imx: Fix imx5 idle logic bug The imx5_idle() check of the tzic_eanble_wake() return value uses incorrect (inverted) logic causing all attempt to idle to fail. Signed-off-by: Robert Lee Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/mm-imx5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/mm-imx5.c b/arch/arm/mach-imx/mm-imx5.c index 05250ae..e10f391 100644 --- a/arch/arm/mach-imx/mm-imx5.c +++ b/arch/arm/mach-imx/mm-imx5.c @@ -35,7 +35,7 @@ static void imx5_idle(void) } clk_enable(gpc_dvfs_clk); mx5_cpu_lp_set(WAIT_UNCLOCKED_POWER_OFF); - if (tzic_enable_wake() != 0) + if (!tzic_enable_wake()) cpu_do_idle(); clk_disable(gpc_dvfs_clk); } -- cgit v1.1 From fc87e080e19fdeb1120ce274423fea7b2ec2f63e Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 18 Apr 2012 13:49:20 +0300 Subject: usb: musb: drop __deprecated flag Looks like we cannot live without that double_buffer_not_ok flag due to many HW bugs this MUSB core has. So, let's drop the __deprecated flag to avoid annoying compile warnings. Signed-off-by: Felipe Balbi --- drivers/usb/musb/musb_core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 93de517..f4a40f0 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -449,7 +449,7 @@ struct musb { * We added this flag to forcefully disable double * buffering until we get it working. */ - unsigned double_buffer_not_ok:1 __deprecated; + unsigned double_buffer_not_ok:1; struct musb_hdrc_config *config; -- cgit v1.1 From c67dd31c5cc745e72d033c0e7d4a2da67c90cd88 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Mon, 16 Apr 2012 17:03:10 +0200 Subject: usb: musb: davinci.c: add missing unregister usb_nop_xceiv_unregister is needed on failure of usb_get_transceiver, as done in other error-handling code in the same function. Signed-off-by: Julia Lawall Signed-off-by: Felipe Balbi --- drivers/usb/musb/davinci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c index 97ab975..768b4b5 100644 --- a/drivers/usb/musb/davinci.c +++ b/drivers/usb/musb/davinci.c @@ -386,7 +386,7 @@ static int davinci_musb_init(struct musb *musb) usb_nop_xceiv_register(); musb->xceiv = usb_get_transceiver(); if (!musb->xceiv) - return -ENODEV; + goto unregister; musb->mregs += DAVINCI_BASE_OFFSET; @@ -444,6 +444,7 @@ static int davinci_musb_init(struct musb *musb) fail: usb_put_transceiver(musb->xceiv); +unregister: usb_nop_xceiv_unregister(); return -ENODEV; } -- cgit v1.1 From b435092f70ec5ebbfb6d075d5bf3c631b49a51de Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 18 Apr 2012 12:08:23 +0200 Subject: tick: Fix oneshot broadcast setup really Sven Joachim reported, that suspend/resume on rc3 trips over a NULL pointer dereference. Linus spotted the clockevent handler being NULL. commit fa4da365b(clockevents: tTack broadcast device mode change in tick_broadcast_switch_to_oneshot()) tried to fix a problem with the broadcast device setup, which was introduced in commit 77b0d60c5( clockevents: Leave the broadcast device in shutdown mode when not needed). The initial commit avoided to set up the broadcast device when no broadcast request bits were set, but that left the broadcast device disfunctional. In consequence deep idle states which need the broadcast device were not woken up. commit fa4da365b tried to fix that by initializing the state of the broadcast facility, but that missed the fact, that nothing initializes the event handler and some other state of the underlying clock event device. The fix is to revert both commits and make only the mode setting of the clock event device conditional on the state of active broadcast users. That initializes everything except the low level device mode, but this happens when the broadcast functionality is invoked by deep idle. Reported-and-tested-by: Sven Joachim Signed-off-by: Thomas Gleixner Cc: Rafael J. Wysocki Cc: Linus Torvalds Cc: Suresh Siddha Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1204181205540.2542@ionos --- kernel/time/tick-broadcast.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index bf57abd..119aca5 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -531,7 +531,6 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc) int was_periodic = bc->mode == CLOCK_EVT_MODE_PERIODIC; bc->event_handler = tick_handle_oneshot_broadcast; - clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); /* Take the do_timer update */ tick_do_timer_cpu = cpu; @@ -549,6 +548,7 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc) to_cpumask(tmpmask)); if (was_periodic && !cpumask_empty(to_cpumask(tmpmask))) { + clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); tick_broadcast_init_next_event(to_cpumask(tmpmask), tick_next_period); tick_broadcast_set_event(tick_next_period, 1); @@ -577,15 +577,10 @@ void tick_broadcast_switch_to_oneshot(void) raw_spin_lock_irqsave(&tick_broadcast_lock, flags); tick_broadcast_device.mode = TICKDEV_MODE_ONESHOT; - - if (cpumask_empty(tick_get_broadcast_mask())) - goto end; - bc = tick_broadcast_device.evtdev; if (bc) tick_broadcast_setup_oneshot(bc); -end: raw_spin_unlock_irqrestore(&tick_broadcast_lock, flags); } -- cgit v1.1 From 3626479e482aa3247aac03724094ba6c13ea1e46 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 17 Apr 2012 18:32:19 -0300 Subject: [media] dvb_frontend: Fix a regression when switching back to DVB-S There are some softwares (Kaffeine and likely xine) that uses a DVBv5 call to switch to DVB-S2, but expects that a DVBv3 call to switch back to DVB-S. Well, this is not right, as a DVBv3 call doesn't know anything about delivery systems. However, as, by accident, this used to work, we need to restore its behavior, in order to avoid regressions with those softwares. Reported on this Fedora 16 bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=812895 Reported-by: Dieter Roever Cc: stable@kernel.org # for version 3.3 Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/dvb-core/dvb_frontend.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/dvb-core/dvb_frontend.c b/drivers/media/dvb/dvb-core/dvb_frontend.c index 39696c6..0f64d71 100644 --- a/drivers/media/dvb/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb/dvb-core/dvb_frontend.c @@ -1446,6 +1446,28 @@ static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system) __func__); return -EINVAL; } + /* + * Get a delivery system that is compatible with DVBv3 + * NOTE: in order for this to work with softwares like Kaffeine that + * uses a DVBv5 call for DVB-S2 and a DVBv3 call to go back to + * DVB-S, drivers that support both should put the SYS_DVBS entry + * before the SYS_DVBS2, otherwise it won't switch back to DVB-S. + * The real fix is that userspace applications should not use DVBv3 + * and not trust on calling FE_SET_FRONTEND to switch the delivery + * system. + */ + ncaps = 0; + while (fe->ops.delsys[ncaps] && ncaps < MAX_DELSYS) { + if (fe->ops.delsys[ncaps] == desired_system) { + delsys = desired_system; + break; + } + ncaps++; + } + if (delsys == SYS_UNDEFINED) { + dprintk("%s() Couldn't find a delivery system that matches %d\n", + __func__, desired_system); + } } else { /* * This is a DVBv5 call. So, it likely knows the supported @@ -1494,9 +1516,10 @@ static int set_delivery_system(struct dvb_frontend *fe, u32 desired_system) __func__); return -EINVAL; } - c->delivery_system = delsys; } + c->delivery_system = delsys; + /* * The DVBv3 or DVBv5 call is requesting a different system. So, * emulation is needed. -- cgit v1.1 From e4459e1682c107d7ee1bf102c1ba534230e9b50b Mon Sep 17 00:00:00 2001 From: Alexey Khoroshilov Date: Thu, 5 Apr 2012 18:53:20 -0300 Subject: [media] drxk: Does not unlock mutex if sanity check failed in scu_command() If sanity check fails in scu_command(), goto error leads to unlock of an unheld mutex. The check should not fail in reality, but it nevertheless worth fixing. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/frontends/drxk_hard.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb/frontends/drxk_hard.c b/drivers/media/dvb/frontends/drxk_hard.c index 36d1175..a414b1f 100644 --- a/drivers/media/dvb/frontends/drxk_hard.c +++ b/drivers/media/dvb/frontends/drxk_hard.c @@ -1520,8 +1520,10 @@ static int scu_command(struct drxk_state *state, dprintk(1, "\n"); if ((cmd == 0) || ((parameterLen > 0) && (parameter == NULL)) || - ((resultLen > 0) && (result == NULL))) - goto error; + ((resultLen > 0) && (result == NULL))) { + printk(KERN_ERR "drxk: Error %d on %s\n", status, __func__); + return status; + } mutex_lock(&state->mutex); -- cgit v1.1 From d9b786955f80fb306471fdb9ea24c6d03af6ca36 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?David=20H=C3=A4rdeman?= Date: Sun, 8 Apr 2012 06:13:04 -0300 Subject: [media] rc-core: set mode for winbond-cir MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Setting the correct mode is required by rc-core or scancodes won't be generated (which isn't very user-friendly). This one-line fix should be suitable for 3.4-rc2. Signed-off-by: David Härdeman Cc: stable@kernel.org Signed-off-by: Mauro Carvalho Chehab --- drivers/media/rc/winbond-cir.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/rc/winbond-cir.c b/drivers/media/rc/winbond-cir.c index b09c5fa..af52658 100644 --- a/drivers/media/rc/winbond-cir.c +++ b/drivers/media/rc/winbond-cir.c @@ -1046,6 +1046,7 @@ wbcir_probe(struct pnp_dev *device, const struct pnp_device_id *dev_id) goto exit_unregister_led; } + data->dev->driver_type = RC_DRIVER_IR_RAW; data->dev->driver_name = WBCIR_NAME; data->dev->input_name = WBCIR_NAME; data->dev->input_phys = "wbcir/cir0"; -- cgit v1.1 From adae0fe0ea87e8fb1a72dde304937c60759b495f Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Thu, 5 Apr 2012 21:04:37 +0400 Subject: SUNRPC: register PipeFS file system after pernet sybsystem PipeFS superblock creation routine relays on SUNRPC pernet data presense, which is created on register_pernet_subsys() call in SUNRPC module init function. Registering of PipeFS filesystem prior to registering of per-net subsystem leads to races (mount of PipeFS can dereference uninitialized data). Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- net/sunrpc/sunrpc_syms.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/net/sunrpc/sunrpc_syms.c b/net/sunrpc/sunrpc_syms.c index 8adfc88..3d6498a 100644 --- a/net/sunrpc/sunrpc_syms.c +++ b/net/sunrpc/sunrpc_syms.c @@ -75,20 +75,21 @@ static struct pernet_operations sunrpc_net_ops = { static int __init init_sunrpc(void) { - int err = register_rpc_pipefs(); + int err = rpc_init_mempool(); if (err) goto out; - err = rpc_init_mempool(); - if (err) - goto out2; err = rpcauth_init_module(); if (err) - goto out3; + goto out2; cache_initialize(); err = register_pernet_subsys(&sunrpc_net_ops); if (err) + goto out3; + + err = register_rpc_pipefs(); + if (err) goto out4; #ifdef RPC_DEBUG rpc_register_sysctl(); @@ -98,11 +99,11 @@ init_sunrpc(void) return 0; out4: - rpcauth_remove_module(); + unregister_pernet_subsys(&sunrpc_net_ops); out3: - rpc_destroy_mempool(); + rpcauth_remove_module(); out2: - unregister_rpc_pipefs(); + rpc_destroy_mempool(); out: return err; } -- cgit v1.1 From ca138f368a36dba40d3ef4a53d64af2011cda3c7 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Thu, 5 Apr 2012 15:26:36 -0400 Subject: NFS: check for req==NULL in nfs_try_to_update_request cleanup Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 2c68818..9b8d4d4 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -682,7 +682,8 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode, req->wb_bytes = rqend - req->wb_offset; out_unlock: spin_unlock(&inode->i_lock); - nfs_clear_request_commit(req); + if (req) + nfs_clear_request_commit(req); return req; out_flushme: spin_unlock(&inode->i_lock); -- cgit v1.1 From cbf2829b61c136edcba302a5e1b6b40e97d32c00 Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue Date: Wed, 18 Apr 2012 17:37:39 +0100 Subject: x86, apic: APIC code touches invalid MSR on P5 class machines Current APIC code assumes MSR_IA32_APICBASE is present for all systems. Pentium Classic P5 and friends didn't have this MSR. MSR_IA32_APICBASE was introduced as an architectural MSR by Intel @ P6. Code paths that can touch this MSR invalidly are when vendor == Intel && cpu-family == 5 and APIC bit is set in CPUID - or when you simply pass lapic on the kernel command line, on a P5. The below patch stops Linux incorrectly interfering with the MSR_IA32_APICBASE for P5 class machines. Other code paths exist that touch the MSR - however those paths are not currently reachable for a conformant P5. Signed-off-by: Bryan O'Donoghue Link: http://lkml.kernel.org/r/4F8EEDD3.1080404@linux.intel.com Signed-off-by: H. Peter Anvin Cc: --- arch/x86/kernel/apic/apic.c | 34 ++++++++++++++++++++-------------- 1 file changed, 20 insertions(+), 14 deletions(-) diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 11544d8..edc2448 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1637,9 +1637,11 @@ static int __init apic_verify(void) mp_lapic_addr = APIC_DEFAULT_PHYS_BASE; /* The BIOS may have set up the APIC at some other address */ - rdmsr(MSR_IA32_APICBASE, l, h); - if (l & MSR_IA32_APICBASE_ENABLE) - mp_lapic_addr = l & MSR_IA32_APICBASE_BASE; + if (boot_cpu_data.x86 >= 6) { + rdmsr(MSR_IA32_APICBASE, l, h); + if (l & MSR_IA32_APICBASE_ENABLE) + mp_lapic_addr = l & MSR_IA32_APICBASE_BASE; + } pr_info("Found and enabled local APIC!\n"); return 0; @@ -1657,13 +1659,15 @@ int __init apic_force_enable(unsigned long addr) * MSR. This can only be done in software for Intel P6 or later * and AMD K7 (Model > 1) or later. */ - rdmsr(MSR_IA32_APICBASE, l, h); - if (!(l & MSR_IA32_APICBASE_ENABLE)) { - pr_info("Local APIC disabled by BIOS -- reenabling.\n"); - l &= ~MSR_IA32_APICBASE_BASE; - l |= MSR_IA32_APICBASE_ENABLE | addr; - wrmsr(MSR_IA32_APICBASE, l, h); - enabled_via_apicbase = 1; + if (boot_cpu_data.x86 >= 6) { + rdmsr(MSR_IA32_APICBASE, l, h); + if (!(l & MSR_IA32_APICBASE_ENABLE)) { + pr_info("Local APIC disabled by BIOS -- reenabling.\n"); + l &= ~MSR_IA32_APICBASE_BASE; + l |= MSR_IA32_APICBASE_ENABLE | addr; + wrmsr(MSR_IA32_APICBASE, l, h); + enabled_via_apicbase = 1; + } } return apic_verify(); } @@ -2209,10 +2213,12 @@ static void lapic_resume(void) * FIXME! This will be wrong if we ever support suspend on * SMP! We'll need to do this as part of the CPU restore! */ - rdmsr(MSR_IA32_APICBASE, l, h); - l &= ~MSR_IA32_APICBASE_BASE; - l |= MSR_IA32_APICBASE_ENABLE | mp_lapic_addr; - wrmsr(MSR_IA32_APICBASE, l, h); + if (boot_cpu_data.x86 >= 6) { + rdmsr(MSR_IA32_APICBASE, l, h); + l &= ~MSR_IA32_APICBASE_BASE; + l |= MSR_IA32_APICBASE_ENABLE | mp_lapic_addr; + wrmsr(MSR_IA32_APICBASE, l, h); + } } maxlvt = lapic_get_maxlvt(); -- cgit v1.1 From 848cce0d4102b5b4b26b0987b43e1919d462afe2 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 21 Feb 2012 17:04:28 +0800 Subject: Btrfs: avoid setting ->d_op twice Follow those instructions, and you'll trigger a warning in the beginning of d_set_d_op(): # mkfs.btrfs /dev/loop3 # mount /dev/loop3 /mnt # btrfs sub create /mnt/sub # btrfs sub snap /mnt /mnt/snap # touch /mnt/snap/sub touch: cannot touch `tmp': Permission denied __d_alloc() set d_op to sb->s_d_op (btrfs_dentry_operations), and then simple_lookup() reset it to simple_dentry_operations, which triggered the warning. Signed-off-by: Li Zefan --- fs/btrfs/inode.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1be3136..a682c26 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4069,7 +4069,7 @@ static struct inode *new_simple_dir(struct super_block *s, BTRFS_I(inode)->dummy_inode = 1; inode->i_ino = BTRFS_EMPTY_SUBVOL_DIR_OBJECTID; - inode->i_op = &simple_dir_inode_operations; + inode->i_op = &btrfs_dir_ro_inode_operations; inode->i_fop = &simple_dir_operations; inode->i_mode = S_IFDIR | S_IRUGO | S_IWUSR | S_IXUGO; inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; @@ -4140,14 +4140,18 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) static int btrfs_dentry_delete(const struct dentry *dentry) { struct btrfs_root *root; + struct inode *inode = dentry->d_inode; - if (!dentry->d_inode && !IS_ROOT(dentry)) - dentry = dentry->d_parent; + if (!inode && !IS_ROOT(dentry)) + inode = dentry->d_parent->d_inode; - if (dentry->d_inode) { - root = BTRFS_I(dentry->d_inode)->root; + if (inode) { + root = BTRFS_I(inode)->root; if (btrfs_root_refs(&root->root_item) == 0) return 1; + + if (btrfs_ino(inode) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID) + return 1; } return 0; } -- cgit v1.1 From 8c9c2bf7a3c4f7e9d158c0be9c49f372fb943ad2 Mon Sep 17 00:00:00 2001 From: Arne Jansen Date: Sat, 25 Feb 2012 09:09:30 +0100 Subject: btrfs: fix race in reada When inserting into the radix tree returns EEXIST, get the existing entry without giving up the spinlock in between. There was a race for both the zones trees and the extent tree. Signed-off-by: Arne Jansen --- fs/btrfs/inode.c | 8 +++++++- fs/btrfs/reada.c | 35 ++++++++++++++++------------------- 2 files changed, 23 insertions(+), 20 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index a682c26..98ee5a5 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4332,7 +4332,13 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, } no_dentry: /* is this a reference to our own snapshot? If so - * skip it + * skip it. + * + * In contrast to old kernels, we insert the snapshot's + * dir item and dir index after it has been created, so + * we won't find a reference to our own snapshot. We + * still keep the following code for backward + * compatibility. */ if (location.type == BTRFS_ROOT_ITEM_KEY && location.objectid == root->root_key.objectid) { diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index dc5d331..8dec650 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -250,14 +250,12 @@ static struct reada_zone *reada_find_zone(struct btrfs_fs_info *fs_info, struct btrfs_bio *bbio) { int ret; - int looped = 0; struct reada_zone *zone; struct btrfs_block_group_cache *cache = NULL; u64 start; u64 end; int i; -again: zone = NULL; spin_lock(&fs_info->reada_lock); ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone, @@ -274,9 +272,6 @@ again: spin_unlock(&fs_info->reada_lock); } - if (looped) - return NULL; - cache = btrfs_lookup_block_group(fs_info, logical); if (!cache) return NULL; @@ -307,13 +302,15 @@ again: ret = radix_tree_insert(&dev->reada_zones, (unsigned long)(zone->end >> PAGE_CACHE_SHIFT), zone); - spin_unlock(&fs_info->reada_lock); - if (ret) { + if (ret == -EEXIST) { kfree(zone); - looped = 1; - goto again; + ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone, + logical >> PAGE_CACHE_SHIFT, 1); + if (ret == 1) + kref_get(&zone->refcnt); } + spin_unlock(&fs_info->reada_lock); return zone; } @@ -323,8 +320,8 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root, struct btrfs_key *top, int level) { int ret; - int looped = 0; struct reada_extent *re = NULL; + struct reada_extent *re_exist = NULL; struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree; struct btrfs_bio *bbio = NULL; @@ -335,14 +332,13 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root, int i; unsigned long index = logical >> PAGE_CACHE_SHIFT; -again: spin_lock(&fs_info->reada_lock); re = radix_tree_lookup(&fs_info->reada_tree, index); if (re) kref_get(&re->refcnt); spin_unlock(&fs_info->reada_lock); - if (re || looped) + if (re) return re; re = kzalloc(sizeof(*re), GFP_NOFS); @@ -398,12 +394,15 @@ again: /* insert extent in reada_tree + all per-device trees, all or nothing */ spin_lock(&fs_info->reada_lock); ret = radix_tree_insert(&fs_info->reada_tree, index, re); + if (ret == -EEXIST) { + re_exist = radix_tree_lookup(&fs_info->reada_tree, index); + BUG_ON(!re_exist); + kref_get(&re_exist->refcnt); + spin_unlock(&fs_info->reada_lock); + goto error; + } if (ret) { spin_unlock(&fs_info->reada_lock); - if (ret != -ENOMEM) { - /* someone inserted the extent in the meantime */ - looped = 1; - } goto error; } for (i = 0; i < nzones; ++i) { @@ -450,9 +449,7 @@ error: } kfree(bbio); kfree(re); - if (looped) - goto again; - return NULL; + return re_exist; } static void reada_kref_dummy(struct kref *kr) -- cgit v1.1 From 207a232ccac0a8cb79d304bd17298dbc96e2e082 Mon Sep 17 00:00:00 2001 From: Arne Jansen Date: Sat, 25 Feb 2012 09:09:47 +0100 Subject: btrfs: don't add both copies of DUP to reada extent tree Normally when there are 2 copies of a block, we add both to the reada extent tree and prefetch only the one that is easier to reach. This way we can better utilize multiple devices. In case of DUP this makes no sense as both copies reside on the same device. Signed-off-by: Arne Jansen --- fs/btrfs/reada.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 8dec650..ac5d010 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -326,6 +326,7 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root, struct btrfs_mapping_tree *map_tree = &fs_info->mapping_tree; struct btrfs_bio *bbio = NULL; struct btrfs_device *dev; + struct btrfs_device *prev_dev; u32 blocksize; u64 length; int nzones = 0; @@ -405,8 +406,20 @@ static struct reada_extent *reada_find_extent(struct btrfs_root *root, spin_unlock(&fs_info->reada_lock); goto error; } + prev_dev = NULL; for (i = 0; i < nzones; ++i) { dev = bbio->stripes[i].dev; + if (dev == prev_dev) { + /* + * in case of DUP, just add the first zone. As both + * are on the same device, there's nothing to gain + * from adding both. + * Also, it wouldn't work, as the tree is per device + * and adding would fail with EEXIST + */ + continue; + } + prev_dev = dev; ret = radix_tree_insert(&dev->reada_extents, index, re); if (ret) { while (--i >= 0) { -- cgit v1.1 From 8d082fb727ac11930ea20bf1612e334ea7c2b697 Mon Sep 17 00:00:00 2001 From: Liu Bo Date: Tue, 3 Apr 2012 09:56:53 +0800 Subject: Btrfs: do not mount when we have a sectorsize unequal to PAGE_SIZE Our code is not ready to cope with a sectorsize that's not equal to PAGE_SIZE. It will lead to hanging-on while writing something. Signed-off-by: Liu Bo --- fs/btrfs/disk-io.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 20196f4..b9866f2 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2254,9 +2254,9 @@ int open_ctree(struct super_block *sb, goto fail_sb_buffer; } - if (sectorsize < PAGE_SIZE) { - printk(KERN_WARNING "btrfs: Incompatible sector size " - "found on %s\n", sb->s_id); + if (sectorsize != PAGE_SIZE) { + printk(KERN_WARNING "btrfs: Incompatible sector size(%lu) " + "found on %s\n", (unsigned long)sectorsize, sb->s_id); goto fail_sb_buffer; } -- cgit v1.1 From 871383be592ba7e819d27556591e315a0df38cee Mon Sep 17 00:00:00 2001 From: David Sterba Date: Mon, 2 Apr 2012 18:31:37 +0200 Subject: btrfs: add missing unlocks to transaction abort paths Added in commit 49b25e0540904be0bf558b84475c69d72e4de66e ("btrfs: enhance transaction abort infrastructure") Reported-by: Dan Carpenter Signed-off-by: David Sterba --- fs/btrfs/transaction.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 11b77a5..3642225 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -73,8 +73,10 @@ loop: cur_trans = root->fs_info->running_transaction; if (cur_trans) { - if (cur_trans->aborted) + if (cur_trans->aborted) { + spin_unlock(&root->fs_info->trans_lock); return cur_trans->aborted; + } atomic_inc(&cur_trans->use_count); atomic_inc(&cur_trans->num_writers); cur_trans->num_joined++; @@ -1400,6 +1402,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, ret = commit_fs_roots(trans, root); if (ret) { mutex_unlock(&root->fs_info->tree_log_mutex); + mutex_unlock(&root->fs_info->reloc_mutex); goto cleanup_transaction; } @@ -1411,6 +1414,7 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans, ret = commit_cowonly_roots(trans, root); if (ret) { mutex_unlock(&root->fs_info->tree_log_mutex); + mutex_unlock(&root->fs_info->reloc_mutex); goto cleanup_transaction; } -- cgit v1.1 From 8e52acf70459020d7e9e9fda25066be4da520943 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Mon, 12 Mar 2012 16:39:28 +0800 Subject: Btrfs: retrurn void from clear_state_bit Currently it returns a set of bits that were cleared, but this return value is not used at all. Moreover it doesn't seem to be useful, because we may clear the bits of a few extent_states, but only the cleared bits of last one is returned. Signed-off-by: Li Zefan --- fs/btrfs/extent_io.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 4789770..05951bd 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -404,18 +404,16 @@ static int split_state(struct extent_io_tree *tree, struct extent_state *orig, /* * utility function to clear some bits in an extent state struct. - * it will optionally wake up any one waiting on this state (wake == 1), or - * forcibly remove the state from the tree (delete == 1). + * it will optionally wake up any one waiting on this state (wake == 1) * * If no bits are set on the state struct after clearing things, the * struct is freed and removed from the tree */ -static int clear_state_bit(struct extent_io_tree *tree, +static void clear_state_bit(struct extent_io_tree *tree, struct extent_state *state, int *bits, int wake) { int bits_to_clear = *bits & ~EXTENT_CTLBITS; - int ret = state->state & bits_to_clear; if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) { u64 range = state->end - state->start + 1; @@ -437,7 +435,6 @@ static int clear_state_bit(struct extent_io_tree *tree, } else { merge_state(tree, state); } - return ret; } static struct extent_state * -- cgit v1.1 From cdc6a3952558f00b1bc3b6401e1cf98797632fe2 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Mon, 12 Mar 2012 16:39:48 +0800 Subject: Btrfs: avoid possible use-after-free in clear_extent_bit() clear_extent_bit() { next_node = rb_next(&state->rb_node); ... clear_state_bit(state); <-- this may free next_node if (next_node) { state = rb_entry(next_node); ... } } clear_state_bit() calls merge_state() which may free the next node of the passing extent_state, so clear_extent_bit() may end up referencing freed memory. Signed-off-by: Li Zefan --- fs/btrfs/extent_io.c | 36 +++++++++++++++++++++--------------- 1 file changed, 21 insertions(+), 15 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 05951bd..11eeb81 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -402,6 +402,15 @@ static int split_state(struct extent_io_tree *tree, struct extent_state *orig, return 0; } +static struct extent_state *next_state(struct extent_state *state) +{ + struct rb_node *next = rb_next(&state->rb_node); + if (next) + return rb_entry(next, struct extent_state, rb_node); + else + return NULL; +} + /* * utility function to clear some bits in an extent state struct. * it will optionally wake up any one waiting on this state (wake == 1) @@ -409,10 +418,11 @@ static int split_state(struct extent_io_tree *tree, struct extent_state *orig, * If no bits are set on the state struct after clearing things, the * struct is freed and removed from the tree */ -static void clear_state_bit(struct extent_io_tree *tree, - struct extent_state *state, - int *bits, int wake) +static struct extent_state *clear_state_bit(struct extent_io_tree *tree, + struct extent_state *state, + int *bits, int wake) { + struct extent_state *next; int bits_to_clear = *bits & ~EXTENT_CTLBITS; if ((bits_to_clear & EXTENT_DIRTY) && (state->state & EXTENT_DIRTY)) { @@ -425,6 +435,7 @@ static void clear_state_bit(struct extent_io_tree *tree, if (wake) wake_up(&state->wq); if (state->state == 0) { + next = next_state(state); if (state->tree) { rb_erase(&state->rb_node, &tree->state); state->tree = NULL; @@ -434,7 +445,9 @@ static void clear_state_bit(struct extent_io_tree *tree, } } else { merge_state(tree, state); + next = next_state(state); } + return next; } static struct extent_state * @@ -473,7 +486,6 @@ int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end, struct extent_state *state; struct extent_state *cached; struct extent_state *prealloc = NULL; - struct rb_node *next_node; struct rb_node *node; u64 last_end; int err; @@ -525,14 +537,11 @@ hit_next: WARN_ON(state->end < start); last_end = state->end; - if (state->end < end && !need_resched()) - next_node = rb_next(&state->rb_node); - else - next_node = NULL; - /* the state doesn't have the wanted bits, go ahead */ - if (!(state->state & bits)) + if (!(state->state & bits)) { + state = next_state(state); goto next; + } /* * | ---- desired range ---- | @@ -590,16 +599,13 @@ hit_next: goto out; } - clear_state_bit(tree, state, &bits, wake); + state = clear_state_bit(tree, state, &bits, wake); next: if (last_end == (u64)-1) goto out; start = last_end + 1; - if (start <= end && next_node) { - state = rb_entry(next_node, struct extent_state, - rb_node); + if (start <= end && state && !need_resched()) goto hit_next; - } goto search_again; out: -- cgit v1.1 From 4735fb282830c0966b301dabcccf4753fa6604bb Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Thu, 12 Apr 2012 22:47:52 +0200 Subject: Btrfs: Make free_ipath() deal gracefully with NULL pointers Make free_ipath() behave like most other freeing functions in the kernel and gracefully do nothing when passed a NULL pointer. Besides this making the bahaviour consistent with functions such as kfree(), vfree(), btrfs_free_path() etc etc, it also fixes a real NULL deref issue in fs/btrfs/ioctl.c::btrfs_ioctl_ino_to_path(). In that function we have this code: ... ipath = init_ipath(size, root, path); if (IS_ERR(ipath)) { ret = PTR_ERR(ipath); ipath = NULL; goto out; } ... out: btrfs_free_path(path); free_ipath(ipath); ... If we ever take the true branch of that 'if' statement we'll end up passing a NULL pointer to free_ipath() which will subsequently dereference it and we'll go "Boom" :-( This patch will avoid that. Signed-off-by: Jesper Juhl --- fs/btrfs/backref.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index f4e9074..b332ff0 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1414,6 +1414,8 @@ struct inode_fs_paths *init_ipath(s32 total_bytes, struct btrfs_root *fs_root, void free_ipath(struct inode_fs_paths *ipath) { + if (!ipath) + return; kfree(ipath->fspath); kfree(ipath); } -- cgit v1.1 From aefc1eb13ebbb86c5ffade8a9e2425cd71032d7e Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Fri, 13 Apr 2012 12:28:00 +0200 Subject: Btrfs: don't call free_extent_buffer twice in iterate_irefs Avoid calling free_extent_buffer more than once when the iterator function returns non-zero. The only code that uses this is scrub repair for corrupted nodatasum blocks. Signed-off-by: Jan Schmidt --- fs/btrfs/backref.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index b332ff0..fb56bcc 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -1247,7 +1247,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, struct btrfs_path *path, iterate_irefs_t *iterate, void *ctx) { - int ret; + int ret = 0; int slot; u32 cur; u32 len; @@ -1259,7 +1259,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, struct btrfs_inode_ref *iref; struct btrfs_key found_key; - while (1) { + while (!ret) { ret = inode_ref_info(inum, parent ? parent+1 : 0, fs_root, path, &found_key); if (ret < 0) @@ -1288,10 +1288,8 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, (unsigned long long)found_key.objectid, (unsigned long long)fs_root->objectid); ret = iterate(parent, iref, eb, ctx); - if (ret) { - free_extent_buffer(eb); + if (ret) break; - } len = sizeof(*iref) + name_len; iref = (struct btrfs_inode_ref *)((char *)iref + len); } -- cgit v1.1 From b916a59adfdc875381b68ced258694b434cf43ae Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Fri, 13 Apr 2012 12:28:08 +0200 Subject: Btrfs: add missing read locks in backref.c iref_to_path and iterate_irefs both increment the eb's refcount to use it after releasing the path. Both depend on consistent data remaining in the extent buffer and need a read lock to protect it. Signed-off-by: Jan Schmidt --- fs/btrfs/backref.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c index fb56bcc..bcec067 100644 --- a/fs/btrfs/backref.c +++ b/fs/btrfs/backref.c @@ -22,6 +22,7 @@ #include "ulist.h" #include "transaction.h" #include "delayed-ref.h" +#include "locking.h" /* * this structure records all encountered refs on the way up to the root @@ -893,18 +894,22 @@ static char *iref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, s64 bytes_left = size - 1; struct extent_buffer *eb = eb_in; struct btrfs_key found_key; + int leave_spinning = path->leave_spinning; if (bytes_left >= 0) dest[bytes_left] = '\0'; + path->leave_spinning = 1; while (1) { len = btrfs_inode_ref_name_len(eb, iref); bytes_left -= len; if (bytes_left >= 0) read_extent_buffer(eb, dest + bytes_left, (unsigned long)(iref + 1), len); - if (eb != eb_in) + if (eb != eb_in) { + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); + } ret = inode_ref_info(parent, 0, fs_root, path, &found_key); if (ret > 0) ret = -ENOENT; @@ -919,8 +924,11 @@ static char *iref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, slot = path->slots[0]; eb = path->nodes[0]; /* make sure we can use eb after releasing the path */ - if (eb != eb_in) + if (eb != eb_in) { atomic_inc(&eb->refs); + btrfs_tree_read_lock(eb); + btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); + } btrfs_release_path(path); iref = btrfs_item_ptr(eb, slot, struct btrfs_inode_ref); @@ -931,6 +939,7 @@ static char *iref_to_path(struct btrfs_root *fs_root, struct btrfs_path *path, } btrfs_release_path(path); + path->leave_spinning = leave_spinning; if (ret) return ERR_PTR(ret); @@ -1260,6 +1269,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, struct btrfs_key found_key; while (!ret) { + path->leave_spinning = 1; ret = inode_ref_info(inum, parent ? parent+1 : 0, fs_root, path, &found_key); if (ret < 0) @@ -1275,6 +1285,8 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, eb = path->nodes[0]; /* make sure we can use eb after releasing the path */ atomic_inc(&eb->refs); + btrfs_tree_read_lock(eb); + btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK); btrfs_release_path(path); item = btrfs_item_nr(eb, slot); @@ -1293,6 +1305,7 @@ static int iterate_irefs(u64 inum, struct btrfs_root *fs_root, len = sizeof(*iref) + name_len; iref = (struct btrfs_inode_ref *)((char *)iref + len); } + btrfs_tree_read_unlock_blocking(eb); free_extent_buffer(eb); } -- cgit v1.1 From 37db63a400d3bac467795aa43901065fd8d903b7 Mon Sep 17 00:00:00 2001 From: Ilya Dryomov Date: Fri, 13 Apr 2012 17:05:08 +0300 Subject: Btrfs: fix max chunk size check in chunk allocator Fix a bug, where in case we need to adjust stripe_size so that the length of the resulting chunk is less than or equal to max_chunk_size, DUP chunks turn out to be only half as big as they could be. Cc: Arne Jansen Signed-off-by: Ilya Dryomov --- fs/btrfs/volumes.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 759d024..ce289af 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3324,12 +3324,14 @@ static int __btrfs_alloc_chunk(struct btrfs_trans_handle *trans, stripe_size = devices_info[ndevs-1].max_avail; num_stripes = ndevs * dev_stripes; - if (stripe_size * num_stripes > max_chunk_size * ncopies) { + if (stripe_size * ndevs > max_chunk_size * ncopies) { stripe_size = max_chunk_size * ncopies; - do_div(stripe_size, num_stripes); + do_div(stripe_size, ndevs); } do_div(stripe_size, dev_stripes); + + /* align to BTRFS_STRIPE_LEN */ do_div(stripe_size, BTRFS_STRIPE_LEN); stripe_size *= BTRFS_STRIPE_LEN; -- cgit v1.1 From 8a3db1849e9e2563727ea2dc32737502e0096641 Mon Sep 17 00:00:00 2001 From: Sergei Trofimovich Date: Mon, 16 Apr 2012 06:44:37 +0300 Subject: btrfs: fix early abort in 'remount' Cc: Jeff Mahoney Cc: Chris Mason Cc: Josef Bacik Signed-off-by: Sergei Trofimovich --- fs/btrfs/super.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 84571d7..43aa2dd 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1152,13 +1152,15 @@ static int btrfs_remount(struct super_block *sb, int *flags, char *data) if (ret) goto restore; } else { - if (fs_info->fs_devices->rw_devices == 0) + if (fs_info->fs_devices->rw_devices == 0) { ret = -EACCES; goto restore; + } - if (btrfs_super_log_root(fs_info->super_copy) != 0) + if (btrfs_super_log_root(fs_info->super_copy) != 0) { ret = -EINVAL; goto restore; + } ret = btrfs_cleanup_fs_roots(fs_info); if (ret) -- cgit v1.1 From 48d282326b3ce5f435835f5fb0e3231c399f4f9a Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 14 Apr 2012 11:24:33 +0200 Subject: fs/btrfs/volumes.c: add missing free_fs_devices Free fs_devices as done in the error-handling code just below. Signed-off-by: Julia Lawall --- fs/btrfs/volumes.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index ce289af..3b98417 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -4352,8 +4352,10 @@ static int open_seed_devices(struct btrfs_root *root, u8 *fsid) ret = __btrfs_open_devices(fs_devices, FMODE_READ, root->fs_info->bdev_holder); - if (ret) + if (ret) { + free_fs_devices(fs_devices); goto out; + } if (!fs_devices->seeding) { __btrfs_close_devices(fs_devices); -- cgit v1.1 From 5cf1ab56133ad7b712673c071b439d4a555a2d1e Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Mon, 16 Apr 2012 09:42:26 -0400 Subject: Btrfs: always store the mirror we read the eb from A user reported a panic where we were trying to fix a bad mirror but the mirror number we were giving was 0, which is invalid. This is because we don't do the transid verification until after the read, so as far as the read code is concerned the read was a success. So instead store the mirror we read from so that if there is some failure post read we know which mirror to try next and which mirror needs to be fixed if we find a good copy of the block. Thanks, Signed-off-by: Josef Bacik --- fs/btrfs/disk-io.c | 16 ++++++++-------- fs/btrfs/extent_io.c | 15 ++++++--------- fs/btrfs/extent_io.h | 4 ++-- fs/btrfs/inode.c | 2 +- 4 files changed, 17 insertions(+), 20 deletions(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index b9866f2..d0c969b 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -383,17 +383,16 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root, if (test_bit(EXTENT_BUFFER_CORRUPT, &eb->bflags)) break; - if (!failed_mirror) { - failed = 1; - printk(KERN_ERR "failed mirror was %d\n", eb->failed_mirror); - failed_mirror = eb->failed_mirror; - } - num_copies = btrfs_num_copies(&root->fs_info->mapping_tree, eb->start, eb->len); if (num_copies == 1) break; + if (!failed_mirror) { + failed = 1; + failed_mirror = eb->read_mirror; + } + mirror_num++; if (mirror_num == failed_mirror) mirror_num++; @@ -564,7 +563,7 @@ struct extent_buffer *find_eb_for_page(struct extent_io_tree *tree, } static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end, - struct extent_state *state) + struct extent_state *state, int mirror) { struct extent_io_tree *tree; u64 found_start; @@ -589,6 +588,7 @@ static int btree_readpage_end_io_hook(struct page *page, u64 start, u64 end, if (!reads_done) goto err; + eb->read_mirror = mirror; if (test_bit(EXTENT_BUFFER_IOERR, &eb->bflags)) { ret = -EIO; goto err; @@ -652,7 +652,7 @@ static int btree_io_failed_hook(struct page *page, int failed_mirror) eb = (struct extent_buffer *)page->private; set_bit(EXTENT_BUFFER_IOERR, &eb->bflags); - eb->failed_mirror = failed_mirror; + eb->read_mirror = failed_mirror; if (test_and_clear_bit(EXTENT_BUFFER_READAHEAD, &eb->bflags)) btree_readahead_hook(root, eb, eb->start, -EIO); return -EIO; /* we fixed nothing */ diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 11eeb81..0c23e57 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2304,7 +2304,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err) u64 start; u64 end; int whole_page; - int failed_mirror; + int mirror; int ret; if (err) @@ -2343,20 +2343,18 @@ static void end_bio_extent_readpage(struct bio *bio, int err) } spin_unlock(&tree->lock); + mirror = (int)(unsigned long)bio->bi_bdev; if (uptodate && tree->ops && tree->ops->readpage_end_io_hook) { ret = tree->ops->readpage_end_io_hook(page, start, end, - state); + state, mirror); if (ret) uptodate = 0; else clean_io_failure(start, page); } - if (!uptodate) - failed_mirror = (int)(unsigned long)bio->bi_bdev; - if (!uptodate && tree->ops && tree->ops->readpage_io_failed_hook) { - ret = tree->ops->readpage_io_failed_hook(page, failed_mirror); + ret = tree->ops->readpage_io_failed_hook(page, mirror); if (!ret && !err && test_bit(BIO_UPTODATE, &bio->bi_flags)) uptodate = 1; @@ -2371,8 +2369,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err) * can't handle the error it will return -EIO and we * remain responsible for that page. */ - ret = bio_readpage_error(bio, page, start, end, - failed_mirror, NULL); + ret = bio_readpage_error(bio, page, start, end, mirror, NULL); if (ret == 0) { uptodate = test_bit(BIO_UPTODATE, &bio->bi_flags); @@ -4465,7 +4462,7 @@ int read_extent_buffer_pages(struct extent_io_tree *tree, } clear_bit(EXTENT_BUFFER_IOERR, &eb->bflags); - eb->failed_mirror = 0; + eb->read_mirror = 0; atomic_set(&eb->io_pages, num_reads); for (i = start_i; i < num_pages; i++) { page = extent_buffer_page(eb, i); diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h index faf10eb5..b516c3b 100644 --- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -79,7 +79,7 @@ struct extent_io_ops { u64 start, u64 end, struct extent_state *state); int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end, - struct extent_state *state); + struct extent_state *state, int mirror); int (*writepage_end_io_hook)(struct page *page, u64 start, u64 end, struct extent_state *state, int uptodate); void (*set_bit_hook)(struct inode *inode, struct extent_state *state, @@ -135,7 +135,7 @@ struct extent_buffer { spinlock_t refs_lock; atomic_t refs; atomic_t io_pages; - int failed_mirror; + int read_mirror; struct list_head leak_list; struct rcu_head rcu_head; pid_t lock_owner; diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 98ee5a5..d953f88 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1947,7 +1947,7 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, * extent_io.c will try to find good copies for us. */ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end, - struct extent_state *state) + struct extent_state *state, int mirror) { size_t offset = start - ((u64)page->index << PAGE_CACHE_SHIFT); struct inode *inode = page->mapping->host; -- cgit v1.1 From 253beebd5a255e07d6a8b65515491f33664e82a2 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 18 Apr 2012 09:59:03 +0300 Subject: Btrfs: double unlock bug in error handling The caller expects this function to return with the lock held and releases it immediately on error. Signed-off-by: Dan Carpenter --- fs/btrfs/extent-tree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 2b35f8d..a0bb9dc 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2301,6 +2301,7 @@ static noinline int run_clustered_refs(struct btrfs_trans_handle *trans, if (ret) { printk(KERN_DEBUG "btrfs: run_delayed_extent_op returned %d\n", ret); + spin_lock(&delayed_refs->lock); return ret; } @@ -2331,6 +2332,7 @@ static noinline int run_clustered_refs(struct btrfs_trans_handle *trans, if (ret) { printk(KERN_DEBUG "btrfs: run_one_delayed_ref returned %d\n", ret); + spin_lock(&delayed_refs->lock); return ret; } -- cgit v1.1 From b9688bb8459b67e42327de6420edb405a9188775 Mon Sep 17 00:00:00 2001 From: Arne Jansen Date: Wed, 18 Apr 2012 10:27:16 +0200 Subject: btrfs: don't return EINTR It is basically a good thing if we are interruptible when waiting for free space, but the generality in which it is implemented currently leads to system calls being interruptible that are not documented this way. For example git can't handle interrupted unlink(), leading to corrupt repos under space pressure. Instead we raise the bar to only be interruptible by SIGKILL. Thanks to David Sterba for suggesting this. Signed-off-by: Arne Jansen --- fs/btrfs/extent-tree.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index a0bb9dc..84497f8 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -3771,13 +3771,10 @@ again: */ if (current->journal_info) return -EAGAIN; - ret = wait_event_interruptible(space_info->wait, - !space_info->flush); - /* Must have been interrupted, return */ - if (ret) { - printk(KERN_DEBUG "btrfs: %s returning -EINTR\n", __func__); + ret = wait_event_killable(space_info->wait, !space_info->flush); + /* Must have been killed, return */ + if (ret) return -EINTR; - } spin_lock(&space_info->lock); } -- cgit v1.1 From 99ba55ad696944b37d5557bc5b4816890854fdb9 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Mon, 19 Mar 2012 16:17:22 +0100 Subject: Btrfs: fix btrfs_ioctl_dev_info() crash on missing device When a filesystem is mounted with the degraded option, it is possible that some of the devices are not there. btrfs_ioctl_dev_info() crashs in this case because the device name is a NULL pointer. This ioctl was only used for scrub. Signed-off-by: Stefan Behrens --- fs/btrfs/ioctl.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 18cc23d..14f8e1f 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2262,7 +2262,10 @@ static long btrfs_ioctl_dev_info(struct btrfs_root *root, void __user *arg) di_args->bytes_used = dev->bytes_used; di_args->total_bytes = dev->total_bytes; memcpy(di_args->uuid, dev->uuid, sizeof(di_args->uuid)); - strncpy(di_args->path, dev->name, sizeof(di_args->path)); + if (dev->name) + strncpy(di_args->path, dev->name, sizeof(di_args->path)); + else + di_args->path[0] = '\0'; out: if (ret == 0 && copy_to_user(arg, di_args, sizeof(*di_args))) -- cgit v1.1 From 5c84fc3c3914e9adfa6155a167c6c0c2709e6a62 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Fri, 30 Mar 2012 13:58:31 +0200 Subject: Btrfs: don't count CRC or header errors twice while scrubbing Each CRC or header error was counted twice, this is now fixed. Signed-off-by: Stefan Behrens --- fs/btrfs/scrub.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index 60f0e28..b679bf6 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -1258,12 +1258,6 @@ static int scrub_checksum_data(struct scrub_block *sblock) if (memcmp(csum, on_disk_csum, sdev->csum_size)) fail = 1; - if (fail) { - spin_lock(&sdev->stat_lock); - ++sdev->stat.csum_errors; - spin_unlock(&sdev->stat_lock); - } - return fail; } @@ -1336,15 +1330,6 @@ static int scrub_checksum_tree_block(struct scrub_block *sblock) if (memcmp(calculated_csum, on_disk_csum, sdev->csum_size)) ++crc_fail; - if (crc_fail || fail) { - spin_lock(&sdev->stat_lock); - if (crc_fail) - ++sdev->stat.csum_errors; - if (fail) - ++sdev->stat.verify_errors; - spin_unlock(&sdev->stat_lock); - } - return fail || crc_fail; } -- cgit v1.1 From 25cd999e1a685dab65292afbe9fa24d790d8a859 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Fri, 30 Mar 2012 13:58:32 +0200 Subject: Btrfs: fix that check_int_data mount option was ignored The bitfield member mount_opt was too small by one bit to hold the mount option that enabled to include data extents in the integrity checker. Since the same issue happened when the BTRFS_MOUNT_PANIC_ON_FATAL_ERROR option was added (git rebase silently merges so that the increase of the size of the bitfield member is lost), the bit limit was removed entirely. Signed-off-by: Stefan Behrens --- fs/btrfs/ctree.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 5b8ef8e..ec42a24 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -1078,7 +1078,7 @@ struct btrfs_fs_info { * is required instead of the faster short fsync log commits */ u64 last_trans_log_full_commit; - unsigned long mount_opt:21; + unsigned long mount_opt; unsigned long compress_type:4; u64 max_inline; u64 alloc_start; -- cgit v1.1 From 00250ec90963b7ef6678438888f3244985ecde14 Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Mon, 9 Apr 2012 18:16:34 -0400 Subject: hwmon: fam15h_power: fix bogus values with current BIOSes Newer BKDG[1] versions recommend a different initialization value for the running average range register in the northbridge. This improves the power reading by avoiding counter saturations resulting in bogus values for anything below about 80% of TDP power consumption. Updated BIOSes will have this new value set up from the beginning, but meanwhile we correct this value ourselves. This needs to be done on all northbridges, even on those where the driver itself does not register at. This fixes the driver on all current machines to provide proper values for idle load. [1] http://support.amd.com/us/Processor_TechDocs/42301_15h_Mod_00h-0Fh_BKDG.pdf Chapter 3.8: D18F5xE0 Processor TDP Running Average (p. 452) Signed-off-by: Andre Przywara Acked-by: Jean Delvare [guenter.roeck@ericsson.com: Removed unnecessary return statement] Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.0+ --- drivers/hwmon/fam15h_power.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c index b7494af..37a8fc9 100644 --- a/drivers/hwmon/fam15h_power.c +++ b/drivers/hwmon/fam15h_power.c @@ -122,6 +122,38 @@ static bool __devinit fam15h_power_is_internal_node0(struct pci_dev *f4) return true; } +/* + * Newer BKDG versions have an updated recommendation on how to properly + * initialize the running average range (was: 0xE, now: 0x9). This avoids + * counter saturations resulting in bogus power readings. + * We correct this value ourselves to cope with older BIOSes. + */ +static void __devinit tweak_runavg_range(struct pci_dev *pdev) +{ + u32 val; + const struct pci_device_id affected_device = { + PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }; + + /* + * let this quirk apply only to the current version of the + * northbridge, since future versions may change the behavior + */ + if (!pci_match_id(&affected_device, pdev)) + return; + + pci_bus_read_config_dword(pdev->bus, + PCI_DEVFN(PCI_SLOT(pdev->devfn), 5), + REG_TDP_RUNNING_AVERAGE, &val); + if ((val & 0xf) != 0xe) + return; + + val &= ~0xf; + val |= 0x9; + pci_bus_write_config_dword(pdev->bus, + PCI_DEVFN(PCI_SLOT(pdev->devfn), 5), + REG_TDP_RUNNING_AVERAGE, val); +} + static void __devinit fam15h_power_init_data(struct pci_dev *f4, struct fam15h_power_data *data) { @@ -155,6 +187,13 @@ static int __devinit fam15h_power_probe(struct pci_dev *pdev, struct device *dev; int err; + /* + * though we ignore every other northbridge, we still have to + * do the tweaking on _each_ node in MCM processors as the counters + * are working hand-in-hand + */ + tweak_runavg_range(pdev); + if (!fam15h_power_is_internal_node0(pdev)) { err = -ENODEV; goto exit; -- cgit v1.1 From 1196573fe493aeeb826468157313ee84ffbc59f3 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 9 Apr 2012 13:53:00 -0400 Subject: hwmon: (ads1015) Fix build warning The following build warning is seen in some configurations. drivers/hwmon/ads1015.c: In function 'show_in': drivers/hwmon/ads1015.c:129: warning: 'in' may be used uninitialized in this function Fix by separating the register read function from the code converting the result into mV. Signed-off-by: Guenter Roeck Cc: Dirk Eibach Reviewed-by: Robert Coulson --- drivers/hwmon/ads1015.c | 33 ++++++++++++++++----------------- 1 file changed, 16 insertions(+), 17 deletions(-) diff --git a/drivers/hwmon/ads1015.c b/drivers/hwmon/ads1015.c index 7765e4f..1958f03 100644 --- a/drivers/hwmon/ads1015.c +++ b/drivers/hwmon/ads1015.c @@ -59,14 +59,11 @@ struct ads1015_data { struct ads1015_channel_data channel_data[ADS1015_CHANNELS]; }; -static int ads1015_read_value(struct i2c_client *client, unsigned int channel, - int *value) +static int ads1015_read_adc(struct i2c_client *client, unsigned int channel) { u16 config; - s16 conversion; struct ads1015_data *data = i2c_get_clientdata(client); unsigned int pga = data->channel_data[channel].pga; - int fullscale; unsigned int data_rate = data->channel_data[channel].data_rate; unsigned int conversion_time_ms; int res; @@ -78,7 +75,6 @@ static int ads1015_read_value(struct i2c_client *client, unsigned int channel, if (res < 0) goto err_unlock; config = res; - fullscale = fullscale_table[pga]; conversion_time_ms = DIV_ROUND_UP(1000, data_rate_table[data_rate]); /* setup and start single conversion */ @@ -105,33 +101,36 @@ static int ads1015_read_value(struct i2c_client *client, unsigned int channel, } res = i2c_smbus_read_word_swapped(client, ADS1015_CONVERSION); - if (res < 0) - goto err_unlock; - conversion = res; - - mutex_unlock(&data->update_lock); - - *value = DIV_ROUND_CLOSEST(conversion * fullscale, 0x7ff0); - - return 0; err_unlock: mutex_unlock(&data->update_lock); return res; } +static int ads1015_reg_to_mv(struct i2c_client *client, unsigned int channel, + s16 reg) +{ + struct ads1015_data *data = i2c_get_clientdata(client); + unsigned int pga = data->channel_data[channel].pga; + int fullscale = fullscale_table[pga]; + + return DIV_ROUND_CLOSEST(reg * fullscale, 0x7ff0); +} + /* sysfs callback function */ static ssize_t show_in(struct device *dev, struct device_attribute *da, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(da); struct i2c_client *client = to_i2c_client(dev); - int in; int res; + int index = attr->index; - res = ads1015_read_value(client, attr->index, &in); + res = ads1015_read_adc(client, index); + if (res < 0) + return res; - return (res < 0) ? res : sprintf(buf, "%d\n", in); + return sprintf(buf, "%d\n", ads1015_reg_to_mv(client, index, res)); } static const struct sensor_device_attribute ads1015_in[] = { -- cgit v1.1 From e88aa7bbbe3046a125ea1936b16bb921cc9c6349 Mon Sep 17 00:00:00 2001 From: David Miller Date: Thu, 12 Apr 2012 14:37:30 -0400 Subject: Fix modpost failures in fedora 17 The symbol table on x86-64 starts to have entries that have names like: _GLOBAL__sub_I_65535_0___mod_x86cpu_device_table They are of type STT_FUNCTION and this one had a length of 18. This matched the device ID validation logic and it barfed because the length did not meet the device type's criteria. -------------------- FATAL: arch/x86/crypto/aesni-intel: sizeof(struct x86cpu_device_id)=16 is not a modulo of the size of section __mod_x86cpu_device_table=18. Fix definition of struct x86cpu_device_id in mod_devicetable.h -------------------- These are some kind of compiler tool internal stuff being emitted and not something we want to inspect in modpost's device ID table validation code. So skip the symbol if it is not of type STT_OBJECT. Signed-off-by: David S. Miller Acked-by: Sam Ravnborg Signed-off-by: Michal Marek --- scripts/mod/file2alias.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index 8e730cc..44ddaa5 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -1100,6 +1100,10 @@ void handle_moddevtable(struct module *mod, struct elf_info *info, if (!sym->st_shndx || get_secindex(info, sym) >= info->num_sections) return; + /* We're looking for an object */ + if (ELF_ST_TYPE(sym->st_info) != STT_OBJECT) + return; + /* All our symbols are of form __mod_XXX_device_table. */ name = strstr(symname, "__mod_"); if (!name) -- cgit v1.1 From a71e23d9925517e609dfcb72b5874f33cdb0d2ad Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 16 Apr 2012 21:55:04 -0400 Subject: xen/blkback: Fix warning error. drivers/block/xen-blkback/xenbus.c: In function 'xen_blkbk_discard': drivers/block/xen-blkback/xenbus.c:419:4: warning: passing argument 1 of 'dev_warn' makes pointer from integer without a cast +[enabled by default] include/linux/device.h:894:5: note: expected 'const struct device *' but argument is of type 'long int' It is unclear how that mistake made it in. It surely is wrong. Acked-by: Jens Axboe Reported-by: Stephen Rothwell Signed-off-by: Konrad Rzeszutek Wilk --- drivers/block/xen-blkback/xenbus.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c index 89860f3..4f66171 100644 --- a/drivers/block/xen-blkback/xenbus.c +++ b/drivers/block/xen-blkback/xenbus.c @@ -416,7 +416,7 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info "discard-secure", "%d", blkif->vbd.discard_secure); if (err) { - dev_warn(dev-dev, "writing discard-secure (%d)", err); + dev_warn(&dev->dev, "writing discard-secure (%d)", err); return; } } -- cgit v1.1 From 2fbe2bf1fd37f9d99950bd8d8093623cf22cf08b Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Wed, 18 Apr 2012 11:33:00 -0400 Subject: EHCI: always clear the STS_FLR status bit This patch (as1544) fixes a problem affecting some EHCI controllers. They can generate interrupts whenever the STS_FLR status bit is turned on, even though that bit is masked out in the Interrupt Enable register. Since the driver doesn't use STS_FLR anyway, the patch changes the interrupt routine to clear that bit whenever it is set, rather than leaving it alone. Signed-off-by: Alan Stern Reported-and-tested-by: Tomoya MORINAGA Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-hcd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index 95ca07a..4a3bc5b 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -858,8 +858,13 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd) goto dead; } + /* + * We don't use STS_FLR, but some controllers don't like it to + * remain on, so mask it out along with the other status bits. + */ + masked_status = status & (INTR_MASK | STS_FLR); + /* Shared IRQ? */ - masked_status = status & INTR_MASK; if (!masked_status || unlikely(ehci->rh_state == EHCI_RH_HALTED)) { spin_unlock(&ehci->lock); return IRQ_NONE; -- cgit v1.1 From 9426cd05682745d1024dbabdec5631309bd2f480 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Mon, 16 Apr 2012 15:28:28 +0200 Subject: uwb: fix use of del_timer_sync() in interrupt del_timer_sync() cannot be used in interrupt. Replace it with del_timer() and a flag Signed-off-by: Oliver Neukum Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/uwb/neh.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c index a269937..8cb71bb 100644 --- a/drivers/uwb/neh.c +++ b/drivers/uwb/neh.c @@ -107,6 +107,7 @@ struct uwb_rc_neh { u8 evt_type; __le16 evt; u8 context; + u8 completed; uwb_rc_cmd_cb_f cb; void *arg; @@ -409,6 +410,7 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size struct device *dev = &rc->uwb_dev.dev; struct uwb_rc_neh *neh; struct uwb_rceb *notif; + unsigned long flags; if (rceb->bEventContext == 0) { notif = kmalloc(size, GFP_ATOMIC); @@ -422,7 +424,11 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size } else { neh = uwb_rc_neh_lookup(rc, rceb); if (neh) { - del_timer_sync(&neh->timer); + spin_lock_irqsave(&rc->neh_lock, flags); + /* to guard against a timeout */ + neh->completed = 1; + del_timer(&neh->timer); + spin_unlock_irqrestore(&rc->neh_lock, flags); uwb_rc_neh_cb(neh, rceb, size); } else dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n", @@ -568,6 +574,10 @@ static void uwb_rc_neh_timer(unsigned long arg) unsigned long flags; spin_lock_irqsave(&rc->neh_lock, flags); + if (neh->completed) { + spin_unlock_irqrestore(&rc->neh_lock, flags); + return; + } if (neh->context) __uwb_rc_neh_rm(rc, neh); else -- cgit v1.1 From 5bd7b419ef2eb4989b207753e088c3437159618a Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Wed, 18 Apr 2012 10:05:55 +0200 Subject: uwb: fix error handling Fatal errors such as a device disconnect must not trigger error handling. The error returns must be checked. Signed-off-by: Oliver Neukum Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/uwb/hwa-rc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c index 66797e9..810c90a 100644 --- a/drivers/uwb/hwa-rc.c +++ b/drivers/uwb/hwa-rc.c @@ -645,7 +645,8 @@ void hwarc_neep_cb(struct urb *urb) dev_err(dev, "NEEP: URB error %d\n", urb->status); } result = usb_submit_urb(urb, GFP_ATOMIC); - if (result < 0) { + if (result < 0 && result != -ENODEV && result != -EPERM) { + /* ignoring unrecoverable errors */ dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n", result); goto error; -- cgit v1.1 From 22b4a4f22da4b39c6f7f679fd35f3d35c91bf851 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 18 Apr 2012 10:14:23 +0000 Subject: tcp: fix retransmit of partially acked frames Alexander Beregalov reported skb_over_panic errors and provided stack trace. I occurs commit a21d45726aca (tcp: avoid order-1 allocations on wifi and tx path) added a regression, when a retransmit is done after a partial ACK. tcp_retransmit_skb() tries to aggregate several frames if the first one has enough available room to hold the following ones payload. This is controlled by /proc/sys/net/ipv4/tcp_retrans_collapse tunable (default : enabled) Problem is we must make sure _pskb_trim_head() doesnt fool skb_availroom() when pulling some bytes from skb (this pull is done when receiver ACK part of the frame). Reported-by: Alexander Beregalov Cc: Marc MERLIN Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv4/tcp_output.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 376b2cf..7ac6423 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -1096,6 +1096,7 @@ static void __pskb_trim_head(struct sk_buff *skb, int len) eat = min_t(int, len, skb_headlen(skb)); if (eat) { __skb_pull(skb, eat); + skb->avail_size -= eat; len -= eat; if (!len) return; -- cgit v1.1 From f941f6922533316556d4dc6eee9c19d4a832c560 Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Tue, 10 Apr 2012 10:48:11 +0200 Subject: USB: ehci-fsl: Fix kernel crash on mpc5121e Since commit 28c56ea1431421dec51b7b229369e991481453df (powerpc/usb: fix bug of kernel hang when initializing usb) the kernel crashes on mpc5121e. mpc5121e doesn't have system interface registers, accessing this register address space cause the machine check exception and a kernel crash: ... [ 1.294596] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 1.316491] fsl-ehci fsl-ehci.0: Freescale On-Chip EHCI Host Controller [ 1.337334] fsl-ehci fsl-ehci.0: new USB bus registered, assigned bus number 1 [ 1.358548] Machine check in kernel mode. [ 1.375917] Caused by (from SRR1=49030): Transfer error ack signal [ 1.395505] Oops: Machine check, sig: 7 [#1] [ 1.413113] MPC5121 ADS [ 1.428718] Modules linked in: [ 1.444841] NIP: c026efc4 LR: c0278b50 CTR: 00000000 [ 1.463342] REGS: df837ba0 TRAP: 0200 Not tainted (3.3.0-08839-gb5174fa) [ 1.484083] MSR: 00049030 CR: 42042022 XER: 20000000 [ 1.504099] TASK = df834000[1] 'swapper' THREAD: df836000 [ 1.509667] GPR00: 1c000000 df837c50 df834000 df9d74e0 00000003 00000010 00000000 00000000 [ 1.531650] GPR08: 00000020 00000000 c037cdd8 e1088000 22042028 1001a69c 00000000 00000000 [ 1.553762] GPR16: 1ffbce70 00000000 1fef5b28 1fef3e08 00000000 00000000 1ffcbc7c c045b264 [ 1.575824] GPR24: 0000008b 00000002 c04a7dd0 e1088000 df33c960 df9d74e0 00000000 df9d7400 [ 1.612295] NIP [c026efc4] ehci_fsl_setup_phy+0x110/0x124 [ 1.632454] LR [c0278b50] ehci_fsl_setup+0x29c/0x304 [ 1.652065] Call Trace: [ 1.668923] [df837c50] [c0278a40] ehci_fsl_setup+0x18c/0x304 (unreliable) [ 1.690332] [df837c70] [c025cba4] usb_add_hcd+0x1f0/0x66c [ 1.710377] [df837cb0] [c0277ab8] ehci_fsl_drv_probe+0x180/0x308 [ 1.731322] [df837ce0] [c01fc7a8] platform_drv_probe+0x20/0x30 [ 1.752202] [df837cf0] [c01fb0ac] driver_probe_device+0x8c/0x214 [ 1.773491] [df837d10] [c01f956c] bus_for_each_drv+0x6c/0xa8 [ 1.794279] [df837d40] [c01fafdc] device_attach+0xb4/0xd8 [ 1.814574] [df837d60] [c01fa44c] bus_probe_device+0xa4/0xb4 [ 1.835343] [df837d80] [c01f87a8] device_add+0x52c/0x5dc [ 1.855462] [df837dd0] [c01fcd58] platform_device_add+0x124/0x1d0 [ 1.876558] [df837df0] [c036dcec] fsl_usb2_device_register+0xa0/0xd4 [ 1.897512] [df837e10] [c036df28] fsl_usb2_mph_dr_of_probe+0x208/0x264 [ 1.918253] [df837e90] [c01fc7a8] platform_drv_probe+0x20/0x30 [ 1.938300] [df837ea0] [c01fb0ac] driver_probe_device+0x8c/0x214 [ 1.958511] [df837ec0] [c01fb2f0] __driver_attach+0xbc/0xc0 [ 1.978088] [df837ee0] [c01f9608] bus_for_each_dev+0x60/0x9c [ 1.997589] [df837f10] [c01fab88] driver_attach+0x24/0x34 [ 2.016757] [df837f20] [c01fa744] bus_add_driver+0x1ac/0x274 [ 2.036339] [df837f50] [c01fb898] driver_register+0x88/0x150 [ 2.056052] [df837f70] [c01fcabc] platform_driver_register+0x68/0x78 [ 2.076650] [df837f80] [c0446500] fsl_usb2_mph_dr_driver_init+0x18/0x28 [ 2.097734] [df837f90] [c0003988] do_one_initcall+0x148/0x1b0 [ 2.117934] [df837fc0] [c042d89c] kernel_init+0xfc/0x190 [ 2.137667] [df837ff0] [c000d2c4] kernel_thread+0x4c/0x68 [ 2.157240] Instruction dump: [ 2.174119] 90050004 4e800020 2f840003 419e0014 2f840004 409eff64 6400c000 4bffff5c [ 2.196000] 64001000 7c0004ac 812b0500 0c090000 <4c00012c> 61290200 7c0004ac 912b0500 [ 2.218100] ---[ end trace 21659aedb84ad816 ]--- [ 2.237089] [ 3.232940] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000007 [ 3.232954] [ 3.271575] Rebooting in 1 seconds.. Check pdata->have_sysif_regs flag before accessing system interface registers. Signed-off-by: Anatolij Gustschin Cc: Shengzhou Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-fsl.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 3e73451..d0a84bd 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -218,6 +218,9 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, u32 portsc; struct usb_hcd *hcd = ehci_to_hcd(ehci); void __iomem *non_ehci = hcd->regs; + struct fsl_usb2_platform_data *pdata; + + pdata = hcd->self.controller->platform_data; portsc = ehci_readl(ehci, &ehci->regs->port_status[port_offset]); portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW); @@ -234,7 +237,9 @@ static void ehci_fsl_setup_phy(struct ehci_hcd *ehci, /* fall through */ case FSL_USB2_PHY_UTMI: /* enable UTMI PHY */ - setbits32(non_ehci + FSL_SOC_USB_CTRL, CTRL_UTMI_PHY_EN); + if (pdata->have_sysif_regs) + setbits32(non_ehci + FSL_SOC_USB_CTRL, + CTRL_UTMI_PHY_EN); portsc |= PORT_PTS_UTMI; break; case FSL_USB2_PHY_NONE: -- cgit v1.1 From f4a728d09a96d6a83d9c3f39035b1aa7726892ea Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 25 Mar 2012 21:08:32 +0200 Subject: drivers/usb/misc/usbtest.c: add kfrees Free the two previously allocated buffers before exiting the function in an error case. Signed-off-by: Julia Lawall Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/usbtest.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index cac67de..9dcb68f 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -2277,6 +2277,8 @@ usbtest_probe(struct usb_interface *intf, const struct usb_device_id *id) if (status < 0) { WARNING(dev, "couldn't get endpoints, %d\n", status); + kfree(dev->buf); + kfree(dev); return status; } /* may find bulk or ISO pipes */ -- cgit v1.1 From 523fc5c14f6cad283e5a266eba0e343aed6e73d5 Mon Sep 17 00:00:00 2001 From: Tomoki Sekiyama Date: Fri, 30 Mar 2012 08:51:28 +0900 Subject: USB: yurex: Remove allocation of coherent buffer for setup-packet buffer Removes allocation of coherent buffer for the control-request setup-packet buffer from the yurex driver. Using coherent buffers for setup-packet is obsolete and does not work with some USB host implementations. Signed-off-by: Tomoki Sekiyama Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/yurex.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 897edda..a4a76fc 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -99,9 +99,7 @@ static void yurex_delete(struct kref *kref) usb_put_dev(dev->udev); if (dev->cntl_urb) { usb_kill_urb(dev->cntl_urb); - if (dev->cntl_req) - usb_free_coherent(dev->udev, YUREX_BUF_SIZE, - dev->cntl_req, dev->cntl_urb->setup_dma); + kfree(dev->cntl_req); if (dev->cntl_buffer) usb_free_coherent(dev->udev, YUREX_BUF_SIZE, dev->cntl_buffer, dev->cntl_urb->transfer_dma); @@ -234,9 +232,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ } /* allocate buffer for control req */ - dev->cntl_req = usb_alloc_coherent(dev->udev, YUREX_BUF_SIZE, - GFP_KERNEL, - &dev->cntl_urb->setup_dma); + dev->cntl_req = kmalloc(YUREX_BUF_SIZE, GFP_KERNEL); if (!dev->cntl_req) { err("Could not allocate cntl_req"); goto error; -- cgit v1.1 From 532f17b5d59bf0deb6f1ff9bc1fb27d5b5011c09 Mon Sep 17 00:00:00 2001 From: Tomoki Sekiyama Date: Fri, 30 Mar 2012 08:51:36 +0900 Subject: USB: yurex: Fix missing URB_NO_TRANSFER_DMA_MAP flag in urb Current probing code is setting URB_NO_TRANSFER_DMA_MAP flag into a wrong urb structure, and this causes BUG_ON with some USB host implementations. This patch fixes the issue. Signed-off-by: Tomoki Sekiyama Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/yurex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index a4a76fc..7020146 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -282,7 +282,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ usb_rcvintpipe(dev->udev, dev->int_in_endpointAddr), dev->int_buffer, YUREX_BUF_SIZE, yurex_interrupt, dev, 1); - dev->cntl_urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; + dev->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; if (usb_submit_urb(dev->urb, GFP_KERNEL)) { retval = -EIO; err("Could not submitting URB"); -- cgit v1.1 From 8034761c219ce545a9f4d3b23cfda47a0027cc8c Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 18 Apr 2012 14:43:40 -0600 Subject: USB: ehci-tegra: don't call set_irq_flags(IRQF_VALID) This call is not needed; the IRQ controller should (and does) set up interrupts correctly. set_irq_flags() isn't exported to modules, to this also fixes compilation of ehci-tegra.c as a module. Signed-off-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-tegra.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 73544bd..8618336 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -731,7 +731,6 @@ static int tegra_ehci_probe(struct platform_device *pdev) err = -ENODEV; goto fail; } - set_irq_flags(irq, IRQF_VALID); #ifdef CONFIG_USB_OTG_UTILS if (pdata->operating_mode == TEGRA_USB_OTG) { -- cgit v1.1 From 1bc68a9e80a7b1ab8dbf1a97e43c5d6a99070bb3 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 16 Apr 2012 00:52:51 -0400 Subject: powerpc: fix system.h fallout in sysdev/scom.c [chroma_defconfig] The following shows up in chroma_defconfig: CC arch/powerpc/sysdev/scom.o arch/powerpc/sysdev/scom.c: In function 'scom_debug_init': arch/powerpc/sysdev/scom.c:182:36: error: 'powerpc_debugfs_root' undeclared (first use in this function) arch/powerpc/sysdev/scom.c:182:36: note: each undeclared identifier is reported only once for each function it appears in make[2]: *** [arch/powerpc/sysdev/scom.o] Error 1 make[1]: *** [arch/powerpc/sysdev/scom.o] Error 2 A bisect leads to commit 9ffc93f203c18a70623f21950f1dd473c9ec48cd "Remove all #inclusions of asm/system.h" Add the debug header which contains powerpc_debugfs_root. Acked-by: David Howells Signed-off-by: Paul Gortmaker --- arch/powerpc/sysdev/scom.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/sysdev/scom.c b/arch/powerpc/sysdev/scom.c index 49a3ece..702256a 100644 --- a/arch/powerpc/sysdev/scom.c +++ b/arch/powerpc/sysdev/scom.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include -- cgit v1.1 From 7a6fbc9a887193a1e9f8658703881c528040afbc Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Tue, 27 Mar 2012 12:22:49 +0400 Subject: ARM: clps711x: serial driver hungs are a result of call disable_irq within ISR Since 2.6.30-rc1 clps711x serial driver hungs system. This is a result of call disable_irq from ISR. synchronize_irq waits for end of interrupt and goes to infinite loop. This patch fix this problem. Signed-off-by: Alexander Shiyan Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/clps711x.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/clps711x.c b/drivers/tty/serial/clps711x.c index e6c3dbd..836fe273 100644 --- a/drivers/tty/serial/clps711x.c +++ b/drivers/tty/serial/clps711x.c @@ -154,10 +154,9 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id) port->x_char = 0; return IRQ_HANDLED; } - if (uart_circ_empty(xmit) || uart_tx_stopped(port)) { - clps711xuart_stop_tx(port); - return IRQ_HANDLED; - } + + if (uart_circ_empty(xmit) || uart_tx_stopped(port)) + goto disable_tx_irq; count = port->fifosize >> 1; do { @@ -171,8 +170,11 @@ static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id) if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) uart_write_wakeup(port); - if (uart_circ_empty(xmit)) - clps711xuart_stop_tx(port); + if (uart_circ_empty(xmit)) { + disable_tx_irq: + disable_irq_nosync(TX_IRQ(port)); + tx_enabled(port) = 0; + } return IRQ_HANDLED; } -- cgit v1.1 From af6d17cdc8c89aeb3101f0d27cd32fc0592b40b2 Mon Sep 17 00:00:00 2001 From: Tomoya MORINAGA Date: Thu, 12 Apr 2012 10:47:50 +0900 Subject: pch_uart: Fix dma channel unallocated issue This driver anticipates pch_uart_verify_port() is not called during installation. However, actually pch_uart_verify_port() is called during installation. As a result, memory access violation occurs like below. 0. initial value: use_dma=0 1. starup() - dma channel is not allocated because use_dma=0 2. pch_uart_verify_port() - Set use_dma=1 3. UART processing acts DMA mode because use_dma=1 - memory access violation occurs! This patch fixes the issue. Solution: Whenever pch_uart_verify_port() is called and then dma channel is not allocated, the channel should be allocated. Signed-off-by: Tomoya MORINAGA Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/pch_uart.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index bbbec4a..c2816f4 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -1447,9 +1447,11 @@ static int pch_uart_verify_port(struct uart_port *port, __func__); return -EOPNOTSUPP; #endif - priv->use_dma = 1; priv->use_dma_flag = 1; dev_info(priv->port.dev, "PCH UART : Use DMA Mode\n"); + if (!priv->use_dma) + pch_request_dma(port); + priv->use_dma = 1; } return 0; -- cgit v1.1 From 888073d41680e8244232f3d850e0424a4e9de60f Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Mon, 16 Apr 2012 15:38:28 -0400 Subject: ARM: bcmring: fix UART declarations This error appeared in the bcmring_defconfig build: CC arch/arm/mach-bcmring/core.o arch/arm/mach-bcmring/core.c:55: error: macro "AMBA_APB_DEVICE" requires 6 arguments, but only 5 given arch/arm/mach-bcmring/core.c:55: warning: type defaults to 'int' in declaration of 'AMBA_APB_DEVICE' arch/arm/mach-bcmring/core.c:56: error: macro "AMBA_APB_DEVICE" requires 6 arguments, but only 5 given arch/arm/mach-bcmring/core.c:56: warning: type defaults to 'int' in declaration of 'AMBA_APB_DEVICE' arch/arm/mach-bcmring/core.c:134: error: 'uartA_device' undeclared here (not in a function) arch/arm/mach-bcmring/core.c:135: error: 'uartB_device' undeclared here (not in a function) make[2]: *** [arch/arm/mach-bcmring/core.o] Error 1 It appeared as of commit 8ede1ae65e61282cddba39bde4142be3885a6f5a "ARM: amba: bcmring: use common amba device initializers" Note that in include/linux/amba/bus.h we have: #define AMBA_APB_DEVICE(name, busid, id, base, irqs, data) ... There is an a --> A case error in the busid and a missing zero placeholder for the id field. Cc: Russell King Signed-off-by: Paul Gortmaker [olof: reworded patch subject] Signed-off-by: Olof Johansson --- arch/arm/mach-bcmring/core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-bcmring/core.c b/arch/arm/mach-bcmring/core.c index 22e4e0a..adbfb19 100644 --- a/arch/arm/mach-bcmring/core.c +++ b/arch/arm/mach-bcmring/core.c @@ -52,8 +52,8 @@ #include #include -static AMBA_APB_DEVICE(uartA, "uarta", MM_ADDR_IO_UARTA, { IRQ_UARTA }, NULL); -static AMBA_APB_DEVICE(uartB, "uartb", MM_ADDR_IO_UARTB, { IRQ_UARTB }, NULL); +static AMBA_APB_DEVICE(uartA, "uartA", 0, MM_ADDR_IO_UARTA, {IRQ_UARTA}, NULL); +static AMBA_APB_DEVICE(uartB, "uartB", 0, MM_ADDR_IO_UARTB, {IRQ_UARTB}, NULL); static struct clk pll1_clk = { .name = "PLL1", -- cgit v1.1 From 118cb4a408e1c4021ac85d6c05da66bb6f57e556 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 19 Apr 2012 07:33:27 +0200 Subject: ALSA: hda/realtek - Fix regression on Quanta/Gericom KN1 Through the transition to the auto-parser, the support for Quanta/Gericom KN1 got broken. There are two problems behind it: - This machine doesn't like the default COEF setup for ALC260 we take now as default - BIOS doesn't set the pins correctly at all; especially the machine uses only the pin 0x0f for both headphone and speaker This patch adds the fixup as a workaround for these issues. Reported-and-tested-by: Uros Vampl Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 49 +++++++++++++++++++++++++++++++++++++++---- 1 file changed, 45 insertions(+), 4 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 2508f81..e65e354 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -1445,6 +1445,13 @@ enum { ALC_FIXUP_ACT_BUILD, }; +static void alc_apply_pincfgs(struct hda_codec *codec, + const struct alc_pincfg *cfg) +{ + for (; cfg->nid; cfg++) + snd_hda_codec_set_pincfg(codec, cfg->nid, cfg->val); +} + static void alc_apply_fixup(struct hda_codec *codec, int action) { struct alc_spec *spec = codec->spec; @@ -1478,9 +1485,7 @@ static void alc_apply_fixup(struct hda_codec *codec, int action) snd_printdd(KERN_INFO "hda_codec: %s: " "Apply pincfg for %s\n", codec->chip_name, modelname); - for (; cfg->nid; cfg++) - snd_hda_codec_set_pincfg(codec, cfg->nid, - cfg->val); + alc_apply_pincfgs(codec, cfg); break; case ALC_FIXUP_VERBS: if (action != ALC_FIXUP_ACT_PROBE || !fix->v.verbs) @@ -4861,6 +4866,7 @@ enum { ALC260_FIXUP_GPIO1_TOGGLE, ALC260_FIXUP_REPLACER, ALC260_FIXUP_HP_B1900, + ALC260_FIXUP_KN1, }; static void alc260_gpio1_automute(struct hda_codec *codec) @@ -4888,6 +4894,36 @@ static void alc260_fixup_gpio1_toggle(struct hda_codec *codec, } } +static void alc260_fixup_kn1(struct hda_codec *codec, + const struct alc_fixup *fix, int action) +{ + struct alc_spec *spec = codec->spec; + static const struct alc_pincfg pincfgs[] = { + { 0x0f, 0x02214000 }, /* HP/speaker */ + { 0x12, 0x90a60160 }, /* int mic */ + { 0x13, 0x02a19000 }, /* ext mic */ + { 0x18, 0x01446000 }, /* SPDIF out */ + /* disable bogus I/O pins */ + { 0x10, 0x411111f0 }, + { 0x11, 0x411111f0 }, + { 0x14, 0x411111f0 }, + { 0x15, 0x411111f0 }, + { 0x16, 0x411111f0 }, + { 0x17, 0x411111f0 }, + { 0x19, 0x411111f0 }, + { } + }; + + switch (action) { + case ALC_FIXUP_ACT_PRE_PROBE: + alc_apply_pincfgs(codec, pincfgs); + break; + case ALC_FIXUP_ACT_PROBE: + spec->init_amp = ALC_INIT_NONE; + break; + } +} + static const struct alc_fixup alc260_fixups[] = { [ALC260_FIXUP_HP_DC5750] = { .type = ALC_FIXUP_PINS, @@ -4938,7 +4974,11 @@ static const struct alc_fixup alc260_fixups[] = { .v.func = alc260_fixup_gpio1_toggle, .chained = true, .chain_id = ALC260_FIXUP_COEF, - } + }, + [ALC260_FIXUP_KN1] = { + .type = ALC_FIXUP_FUNC, + .v.func = alc260_fixup_kn1, + }, }; static const struct snd_pci_quirk alc260_fixup_tbl[] = { @@ -4948,6 +4988,7 @@ static const struct snd_pci_quirk alc260_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x280a, "HP dc5750", ALC260_FIXUP_HP_DC5750), SND_PCI_QUIRK(0x103c, 0x30ba, "HP Presario B1900", ALC260_FIXUP_HP_B1900), SND_PCI_QUIRK(0x1509, 0x4540, "Favorit 100XS", ALC260_FIXUP_GPIO1), + SND_PCI_QUIRK(0x152d, 0x0729, "Quanta KN1", ALC260_FIXUP_KN1), SND_PCI_QUIRK(0x161f, 0x2057, "Replacer 672V", ALC260_FIXUP_REPLACER), SND_PCI_QUIRK(0x1631, 0xc017, "PB V7900", ALC260_FIXUP_COEF), {} -- cgit v1.1 From 8d9a784d1e2c75e0dcae06f77a02f5e7bb547f3a Mon Sep 17 00:00:00 2001 From: Stuart Menefy Date: Tue, 14 Feb 2012 11:29:11 +0000 Subject: sh: Fix error synchronising kernel page tables The problem is caused by the interaction of two features in the Linux memory management code. A processes address space is described by a struct mm_struct, and every thread has a pointer to the mm it should run in. The exception to this are kernel threads, which don't have an mm, and so borrow the mm from the last thread which ran. The system is bootstrapped by the initial kernel thread using init's mm (even though init hasn't been created yet, its mm is the static init_mm). The other feature is how the kernel handles the page table which describes the portion of the address space which is only visible when executing inside the kernel, and which is shared by all threads. On the SH4 the only portion of the kernel's address space which described using the page table is called P3, from 0xc0000000 to 0xdfffffff. This portion of the address space is divided into three: - mappings for dma_alloc_coherent() - mappings for vmalloc() and ioremap() - fixmap mappings, primarily used in copy_user_pages() to create kernel mappings of user pages with the correct cache colour. To optimise the TLB miss handler we don't want to add an additional condition which checks whether the faulting address is in the user or the kernel portion of the address space, and so all page tables have a common portion which describes the kernel part of the address space. As the SH4 uses a two level page table, only the kernel portion of first level page table (the pgd entries) is duplicated. These all point to the same second level entries (the pte's), and so no memory is wasted. The reference page table for the kernel is called the swapper_pg_dir, and when a new page table is created for a new process the kernel portion of the page table is copied from swapper_pg_dir. This works fine when changes only occur in the second level of the kernel's page table, or the first level entries are created before any new user processes. However if a change occurs to the first level of the page table, and there are existing processes which don't have this entry in their page table, this new entry needs to be added. This is done on demand, when the kernel accesses a P3 address which isn't mapped using the current page table, the code in vmalloc_fault() copies the entry from the reference page table (swapper_pg_dir) into the current processes page table. The bug which this patch addresses is that the code in vmalloc_fault() was not copying addresses which fell in the dma_alloc_coherent() portion of the address space, and it should have been copying any P3 address. Why we hadn't seen this before, and what made this hard to reproduce, is that normally the kernel will have called dma_alloc_coherent(), and accessed the memory mapping created, before any user process runs. Typically drivers such as USB or SATA will have created and used mappings of this type during the kernel initialisation, when probing for the attached devices, before init runs. Ethernet is slightly different, as it normally only creates and accesses dma_alloc_coherent() mappings when the network is brought up, but if kernel level IP configuration is used this will also occur before any user space process runs. So the first reproduction of this problem which we saw was occurred when USB and SATA were removed from the kernel, and then bring up Ethernet from user space using ifconfig. I'd like to thank Joseph Bormolini who did the hard work reducing the problem to this simple to reproduce criteria. In your case the situation is slightly different, and turns out to depends on the exact kernel configuration (which we had) and your ramdisk contents (which we didn't - hence the need for some assumptions). In this case the problem is a side effect of kernel level module loading. Kernel subsystems sometimes trigger the load of kernel modules directly, for example the crypto subsystem tries to load the cryptomgr and MTD tries to load modules for Flash partitioning if these are not built into the kernel. This is done by the kernel creating a user process which runs insmod to try and load the appropriate module. In order for this to cause problems the system must be running with a initrd or initramfs, which contains an insmod executable - if the kernel can't find an insmod to run, no user process is created, and the problem doesn't occur. If an insmod is found, a process is created to run it, which will inherit the kernel portion of the swapper_pg_dir first level page table. It doesn't matter whether the inmod is successful or not, but when the the kernel scheduler context switches back to the kernel initialisation thread, the insmod's mm is 'borrowed' by the kernel thread, as it doesn't have an address space of its own. (Reference counting is used to ensure this mm is not destroyed, even though the user process which caused its creation may no longer exist.) If this address space doesn't have a first level page table entry for the consistent mappings, and a driver tries to access such a mapping, we are in the same situation as described above, except this time in a kernel thread rather than a user thread executing inside the kernel. See bugzilla: 15425, 15836, 15862, 16106, 16793 Signed-off-by: Stuart Menefy Signed-off-by: Paul Mundt --- arch/sh/mm/fault_32.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c index 324eef9..e99b104 100644 --- a/arch/sh/mm/fault_32.c +++ b/arch/sh/mm/fault_32.c @@ -86,7 +86,7 @@ static noinline int vmalloc_fault(unsigned long address) pte_t *pte_k; /* Make sure we are in vmalloc/module/P3 area: */ - if (!(address >= VMALLOC_START && address < P3_ADDR_MAX)) + if (!(address >= P3SEG && address < P3_ADDR_MAX)) return -1; /* -- cgit v1.1 From ac71311e65e2c4c2dbac76db698fecbee755b016 Mon Sep 17 00:00:00 2001 From: AceLan Kao Date: Thu, 19 Apr 2012 14:53:45 +0800 Subject: Bluetooth: Add support for AR3012 [0cf3:e004] Add another vendor specific ID for Atheros AR3012 output of usb-devices: T: Bus=02 Lev=02 Prnt=02 Port=04 Cnt=01 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0cf3 ProdID=e004 Rev=00.02 S: Manufacturer=Atheros Communications S: Product=Bluetooth USB Host Controller S: SerialNumber=Alaska Day 2006 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb BugLink: https://bugs.launchpad.net/bugs/922715 Signed-off-by: AceLan Kao Signed-off-by: Marcel Holtmann --- drivers/bluetooth/ath3k.c | 2 ++ drivers/bluetooth/btusb.c | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/bluetooth/ath3k.c b/drivers/bluetooth/ath3k.c index 639a161..57fd867 100644 --- a/drivers/bluetooth/ath3k.c +++ b/drivers/bluetooth/ath3k.c @@ -76,6 +76,7 @@ static struct usb_device_id ath3k_table[] = { { USB_DEVICE(0x13d3, 0x3375) }, { USB_DEVICE(0x04CA, 0x3005) }, { USB_DEVICE(0x13d3, 0x3362) }, + { USB_DEVICE(0x0CF3, 0xE004) }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xE02C) }, @@ -96,6 +97,7 @@ static struct usb_device_id ath3k_blist_tbl[] = { { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, { } /* Terminating entry */ }; diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index a497544..93cc828 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -135,6 +135,7 @@ static struct usb_device_id blacklist_table[] = { { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 }, { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 }, + { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 }, /* Atheros AR5BBU12 with sflash firmware */ { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, -- cgit v1.1 From 15b120d67019d691e4389372967332d74a80522a Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Wed, 18 Apr 2012 13:59:30 +0300 Subject: usb: gadget: dummy: do not call pullup() on udc_stop() pullup() is already called properly by udc-core.c and there's no need to call it from udc_stop(), in fact that will cause issues. Cc: stable@vger.kernel.org Reviewed-by: Alexander Shishkin Acked-by: Alan Stern Signed-off-by: Felipe Balbi --- drivers/usb/gadget/dummy_hcd.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/gadget/dummy_hcd.c b/drivers/usb/gadget/dummy_hcd.c index a6dfd21..170cbe8 100644 --- a/drivers/usb/gadget/dummy_hcd.c +++ b/drivers/usb/gadget/dummy_hcd.c @@ -927,7 +927,6 @@ static int dummy_udc_stop(struct usb_gadget *g, dum->driver = NULL; - dummy_pullup(&dum->gadget, 0); return 0; } -- cgit v1.1 From 3e843196c697ee2c319d96e861980fb4c3e04e24 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 19 Apr 2012 12:04:03 +0200 Subject: ALSA: hda/sigmatel - Fix inverted mute LED While refactoring the mute-LED handling for HP laptops, I messed up the polarity check in a wrong way. The red (or the mute-LED if any) should appear in the muted state, corresponding to GPIO on. Reported-by: Mikko Vinni Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_sigmatel.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c index 33a9946..4742cac 100644 --- a/sound/pci/hda/patch_sigmatel.c +++ b/sound/pci/hda/patch_sigmatel.c @@ -5063,12 +5063,11 @@ static void stac92xx_update_led_status(struct hda_codec *codec, int enabled) if (spec->gpio_led_polarity) muted = !muted; - /*polarity defines *not* muted state level*/ if (!spec->vref_mute_led_nid) { if (muted) - spec->gpio_data &= ~spec->gpio_led; /* orange */ + spec->gpio_data |= spec->gpio_led; else - spec->gpio_data |= spec->gpio_led; /* white */ + spec->gpio_data &= ~spec->gpio_led; stac_gpio_set(codec, spec->gpio_mask, spec->gpio_dir, spec->gpio_data); } else { -- cgit v1.1 From 590b4775d6b628c7ad215fd0335a0a787032e2dd Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 19 Apr 2012 00:00:27 -0700 Subject: ALSA: workaround: change the timing of alsa_sound_last_init() Current alsa_sound_last_init() was called as __initcall(). So, on current ALSA, only devices that had been properly registered at this point were shown. So, it will show "No soundcards found" if driver requests probe deferment. it's often misleading. This patch delays the timing of alsa_sound_last_init() as workaround. Signed-off-by: Kuninori Morimoto Reviwed-by: Mark Brown Signed-off-by: Takashi Iwai --- sound/last.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/last.c b/sound/last.c index bdd0857..7ffc182 100644 --- a/sound/last.c +++ b/sound/last.c @@ -38,4 +38,4 @@ static int __init alsa_sound_last_init(void) return 0; } -__initcall(alsa_sound_last_init); +late_initcall_sync(alsa_sound_last_init); -- cgit v1.1 From cd90491bcd63af3f1505de76aa82d5884f1d16e7 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Sun, 8 Apr 2012 16:31:24 -0300 Subject: [media] V4L: mt9m032: fix two dead-locks Fix a copy-paste typo and a nested locking function call in mt9m032. Signed-off-by: Guennadi Liakhovetski Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/mt9m032.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/video/mt9m032.c b/drivers/media/video/mt9m032.c index 7636672..645973c 100644 --- a/drivers/media/video/mt9m032.c +++ b/drivers/media/video/mt9m032.c @@ -392,10 +392,11 @@ static int mt9m032_set_pad_format(struct v4l2_subdev *subdev, } /* Scaling is not supported, the format is thus fixed. */ - ret = mt9m032_get_pad_format(subdev, fh, fmt); + fmt->format = *__mt9m032_get_pad_format(sensor, fh, fmt->which); + ret = 0; done: - mutex_lock(&sensor->lock); + mutex_unlock(&sensor->lock); return ret; } -- cgit v1.1 From 3bc86c624fe48864cd6e3738d5ff35d1fe31fa6c Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Mon, 9 Apr 2012 09:31:56 -0300 Subject: [media] V4L: DocBook: Fix typos in the multi-plane formats description Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/pixfmt-nv12m.xml | 2 +- Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml index 3fd3ce5..5274c24 100644 --- a/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-nv12m.xml @@ -1,6 +1,6 @@ - V4L2_PIX_FMT_NV12M ('NV12M') + V4L2_PIX_FMT_NV12M ('NM12') &manvol; diff --git a/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml b/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml index 9957863..60308f1 100644 --- a/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml +++ b/Documentation/DocBook/media/v4l/pixfmt-yuv420m.xml @@ -1,6 +1,6 @@ - V4L2_PIX_FMT_YUV420M ('YU12M') + V4L2_PIX_FMT_YUV420M ('YM12') &manvol; -- cgit v1.1 From 2198edddd8f0245d4c47419310c6cfb0f4e1a197 Mon Sep 17 00:00:00 2001 From: Josh Boyer Date: Wed, 18 Apr 2012 10:05:17 -0400 Subject: HID: default HID_BATTERY_STRENGTH to no Commit 4f5ca836b "HID: hid-input: add support for HID devices reporting Battery Strength" added the CONFIG_HID_BATTERY_STRENGTH option to report the battery strength of HID devices. The commit log explicitly mentions it not working properly with recent userspace, but it is default y anyway. This is rather odd, and actually causes problems on real systems. This works around Fedora bug https://bugzilla.redhat.com/show_bug.cgi?id=806295 Signed-off-by: Josh Boyer Signed-off-by: Jiri Kosina --- drivers/hid/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index a3d0332..ffddcba 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -34,7 +34,7 @@ config HID config HID_BATTERY_STRENGTH bool depends on HID && POWER_SUPPLY && HID = POWER_SUPPLY - default y + default n config HIDRAW bool "/dev/hidraw raw HID device support" -- cgit v1.1 From ca3649de026ff95c6f2847e8d096cf2f411c02b3 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 19 Apr 2012 15:15:25 +0200 Subject: ALSA: hda/conexant - Don't set HP pin-control bit unconditionally Some output pins on Conexant chips have no HP control bit, but the auto-parser initializes these pins unconditionally with PIN_HP. Check the pin-capability and avoid the HP bit if not supported. Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index d29d6d3..f52c9ef 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -3951,9 +3951,14 @@ static void cx_auto_init_output(struct hda_codec *codec) int i; mute_outputs(codec, spec->multiout.num_dacs, spec->multiout.dac_nids); - for (i = 0; i < cfg->hp_outs; i++) + for (i = 0; i < cfg->hp_outs; i++) { + unsigned int val = PIN_OUT; + if (snd_hda_query_pin_caps(codec, cfg->hp_pins[i]) & + AC_PINCAP_HP_DRV) + val |= AC_PINCTL_HP_EN; snd_hda_codec_write(codec, cfg->hp_pins[i], 0, - AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP); + AC_VERB_SET_PIN_WIDGET_CONTROL, val); + } mute_outputs(codec, cfg->hp_outs, cfg->hp_pins); mute_outputs(codec, cfg->line_outs, cfg->line_out_pins); mute_outputs(codec, cfg->speaker_outs, cfg->speaker_pins); -- cgit v1.1 From d70f363222ef373c2037412f09a600357cfa1c7a Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Thu, 19 Apr 2012 15:18:08 +0200 Subject: ALSA: hda/conexant - Set up the missing docking-station pins ThinkPad 410,420,510,520 and X201 with cx50585 & co chips have the docking-station ports, but BIOS doesn't initialize for these pins. Thus, like the former X200, we need to set up the pins manually in the driver. The odd part is that the same PCI SSID is used for X200 and T400, thus we need to prepare individual fixup tables for cx5051 and others. Bugzilla entries: https://bugzilla.redhat.com/show_bug.cgi?id=808559 https://bugzilla.redhat.com/show_bug.cgi?id=806217 https://bugzilla.redhat.com/show_bug.cgi?id=810697 Reported-by: Josh Boyer Reported-by: Jens Taprogge Tested-by: Jens Taprogge Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_conexant.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/sound/pci/hda/patch_conexant.c b/sound/pci/hda/patch_conexant.c index f52c9ef..58b5de4 100644 --- a/sound/pci/hda/patch_conexant.c +++ b/sound/pci/hda/patch_conexant.c @@ -4367,8 +4367,10 @@ static void apply_pin_fixup(struct hda_codec *codec, enum { CXT_PINCFG_LENOVO_X200, + CXT_PINCFG_LENOVO_TP410, }; +/* ThinkPad X200 & co with cxt5051 */ static const struct cxt_pincfg cxt_pincfg_lenovo_x200[] = { { 0x16, 0x042140ff }, /* HP (seq# overridden) */ { 0x17, 0x21a11000 }, /* dock-mic */ @@ -4376,15 +4378,33 @@ static const struct cxt_pincfg cxt_pincfg_lenovo_x200[] = { {} }; +/* ThinkPad 410/420/510/520, X201 & co with cxt5066 */ +static const struct cxt_pincfg cxt_pincfg_lenovo_tp410[] = { + { 0x19, 0x042110ff }, /* HP (seq# overridden) */ + { 0x1a, 0x21a190f0 }, /* dock-mic */ + { 0x1c, 0x212140ff }, /* dock-HP */ + {} +}; + static const struct cxt_pincfg *cxt_pincfg_tbl[] = { [CXT_PINCFG_LENOVO_X200] = cxt_pincfg_lenovo_x200, + [CXT_PINCFG_LENOVO_TP410] = cxt_pincfg_lenovo_tp410, }; -static const struct snd_pci_quirk cxt_fixups[] = { +static const struct snd_pci_quirk cxt5051_fixups[] = { SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo X200", CXT_PINCFG_LENOVO_X200), {} }; +static const struct snd_pci_quirk cxt5066_fixups[] = { + SND_PCI_QUIRK(0x17aa, 0x20f2, "Lenovo T400", CXT_PINCFG_LENOVO_TP410), + SND_PCI_QUIRK(0x17aa, 0x215e, "Lenovo T410", CXT_PINCFG_LENOVO_TP410), + SND_PCI_QUIRK(0x17aa, 0x215f, "Lenovo T510", CXT_PINCFG_LENOVO_TP410), + SND_PCI_QUIRK(0x17aa, 0x21ce, "Lenovo T420", CXT_PINCFG_LENOVO_TP410), + SND_PCI_QUIRK(0x17aa, 0x21cf, "Lenovo T520", CXT_PINCFG_LENOVO_TP410), + {} +}; + /* add "fake" mute amp-caps to DACs on cx5051 so that mixer mute switches * can be created (bko#42825) */ @@ -4421,11 +4441,13 @@ static int patch_conexant_auto(struct hda_codec *codec) break; case 0x14f15051: add_cx5051_fake_mutes(codec); + apply_pin_fixup(codec, cxt5051_fixups, cxt_pincfg_tbl); + break; + default: + apply_pin_fixup(codec, cxt5066_fixups, cxt_pincfg_tbl); break; } - apply_pin_fixup(codec, cxt_fixups, cxt_pincfg_tbl); - err = cx_auto_search_adcs(codec); if (err < 0) return err; -- cgit v1.1 From a720b2dd2470a52345df11dca8d6c1466599f812 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Thu, 19 Apr 2012 12:35:08 +0200 Subject: x86, intel_cacheinfo: Fix error return code in amd_set_l3_disable_slot() If the L3 disable slot is already in use, return -EEXIST instead of -EINVAL. The caller, store_cache_disable(), checks this return value to print an appropriate warning. Also, we want to signal with -EEXIST that the current index we're disabling has actually been already disabled on the node: $ echo 12 > /sys/devices/system/cpu/cpu3/cache/index3/cache_disable_0 $ echo 12 > /sys/devices/system/cpu/cpu3/cache/index3/cache_disable_0 -bash: echo: write error: File exists $ echo 12 > /sys/devices/system/cpu/cpu3/cache/index3/cache_disable_1 -bash: echo: write error: File exists $ echo 12 > /sys/devices/system/cpu/cpu5/cache/index3/cache_disable_1 -bash: echo: write error: File exists The old code would say -bash: echo: write error: Invalid argument for disable slot 1 when playing the example above with no output in dmesg, which is clearly misleading. Reported-by: Dan Carpenter Signed-off-by: Srivatsa S. Bhat Link: http://lkml.kernel.org/r/20120419070053.GB16645@elgon.mountain [Boris: add testing for the other index too] Signed-off-by: Borislav Petkov --- arch/x86/kernel/cpu/intel_cacheinfo.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 73d08ed..b8f3653 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -433,14 +433,14 @@ int amd_set_l3_disable_slot(struct amd_northbridge *nb, int cpu, unsigned slot, /* check if @slot is already used or the index is already disabled */ ret = amd_get_l3_disable_slot(nb, slot); if (ret >= 0) - return -EINVAL; + return -EEXIST; if (index > nb->l3_cache.indices) return -EINVAL; /* check whether the other slot has disabled the same index already */ if (index == amd_get_l3_disable_slot(nb, !slot)) - return -EINVAL; + return -EEXIST; amd_l3_disable_index(nb, cpu, slot, index); @@ -468,8 +468,8 @@ static ssize_t store_cache_disable(struct _cpuid4_info *this_leaf, err = amd_set_l3_disable_slot(this_leaf->base.nb, cpu, slot, val); if (err) { if (err == -EEXIST) - printk(KERN_WARNING "L3 disable slot %d in use!\n", - slot); + pr_warning("L3 slot %d in use/index already disabled!\n", + slot); return err; } return count; -- cgit v1.1 From 3066616ce23aad5719c23a0f21f32676402cb44b Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 17 Apr 2012 22:21:38 -0400 Subject: xen/xenbus: Add quirk to deal with misconfigured backends. A rather annoying and common case is when booting a PVonHVM guest and exposing the PV KBD and PV VFB - as broken toolstacks don't always initialize the backends correctly. Normally The HVM guest is using the VGA driver and the emulated keyboard for this (though upstream version of QEMU implements PV KBD, but still uses a VGA driver). We provide a very basic two-stage wait mechanism - where we wait for 30 seconds for all devices, and then for 270 for all them except the two mentioned. That allows us to wait for the essential devices, like network or disk for the full 6 minutes. To trigger this, put this in your guest config: vfb = [ 'vnc=1, vnclisten=0.0.0.0 ,vncunused=1'] instead of this: vnc=1 vnclisten="0.0.0.0" CC: stable@kernel.org Acked-by: Stefano Stabellini [v3: Split delay in non-essential (30 seconds) and essential devices per Ian and Stefano suggestion] [v4: Added comments per Stefano suggestion] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xenbus/xenbus_probe_frontend.c | 69 +++++++++++++++++++++++------- 1 file changed, 53 insertions(+), 16 deletions(-) diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c index f20c5f1..a31b54d 100644 --- a/drivers/xen/xenbus/xenbus_probe_frontend.c +++ b/drivers/xen/xenbus/xenbus_probe_frontend.c @@ -135,7 +135,7 @@ static int read_backend_details(struct xenbus_device *xendev) return xenbus_read_otherend_details(xendev, "backend-id", "backend"); } -static int is_device_connecting(struct device *dev, void *data) +static int is_device_connecting(struct device *dev, void *data, bool ignore_nonessential) { struct xenbus_device *xendev = to_xenbus_device(dev); struct device_driver *drv = data; @@ -152,16 +152,41 @@ static int is_device_connecting(struct device *dev, void *data) if (drv && (dev->driver != drv)) return 0; + if (ignore_nonessential) { + /* With older QEMU, for PVonHVM guests the guest config files + * could contain: vfb = [ 'vnc=1, vnclisten=0.0.0.0'] + * which is nonsensical as there is no PV FB (there can be + * a PVKB) running as HVM guest. */ + + if ((strncmp(xendev->nodename, "device/vkbd", 11) == 0)) + return 0; + + if ((strncmp(xendev->nodename, "device/vfb", 10) == 0)) + return 0; + } xendrv = to_xenbus_driver(dev->driver); return (xendev->state < XenbusStateConnected || (xendev->state == XenbusStateConnected && xendrv->is_ready && !xendrv->is_ready(xendev))); } +static int essential_device_connecting(struct device *dev, void *data) +{ + return is_device_connecting(dev, data, true /* ignore PV[KBB+FB] */); +} +static int non_essential_device_connecting(struct device *dev, void *data) +{ + return is_device_connecting(dev, data, false); +} -static int exists_connecting_device(struct device_driver *drv) +static int exists_essential_connecting_device(struct device_driver *drv) { return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv, - is_device_connecting); + essential_device_connecting); +} +static int exists_non_essential_connecting_device(struct device_driver *drv) +{ + return bus_for_each_dev(&xenbus_frontend.bus, NULL, drv, + non_essential_device_connecting); } static int print_device_status(struct device *dev, void *data) @@ -192,6 +217,23 @@ static int print_device_status(struct device *dev, void *data) /* We only wait for device setup after most initcalls have run. */ static int ready_to_wait_for_devices; +static bool wait_loop(unsigned long start, unsigned int max_delay, + unsigned int *seconds_waited) +{ + if (time_after(jiffies, start + (*seconds_waited+5)*HZ)) { + if (!*seconds_waited) + printk(KERN_WARNING "XENBUS: Waiting for " + "devices to initialise: "); + *seconds_waited += 5; + printk("%us...", max_delay - *seconds_waited); + if (*seconds_waited == max_delay) + return true; + } + + schedule_timeout_interruptible(HZ/10); + + return false; +} /* * On a 5-minute timeout, wait for all devices currently configured. We need * to do this to guarantee that the filesystems and / or network devices @@ -215,19 +257,14 @@ static void wait_for_devices(struct xenbus_driver *xendrv) if (!ready_to_wait_for_devices || !xen_domain()) return; - while (exists_connecting_device(drv)) { - if (time_after(jiffies, start + (seconds_waited+5)*HZ)) { - if (!seconds_waited) - printk(KERN_WARNING "XENBUS: Waiting for " - "devices to initialise: "); - seconds_waited += 5; - printk("%us...", 300 - seconds_waited); - if (seconds_waited == 300) - break; - } - - schedule_timeout_interruptible(HZ/10); - } + while (exists_non_essential_connecting_device(drv)) + if (wait_loop(start, 30, &seconds_waited)) + break; + + /* Skips PVKB and PVFB check.*/ + while (exists_essential_connecting_device(drv)) + if (wait_loop(start, 270, &seconds_waited)) + break; if (seconds_waited) printk("\n"); -- cgit v1.1 From 05ffe24f5290dc095f98fbaf84afe51ef404ccc5 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 18 Apr 2012 12:20:10 -0400 Subject: NFSv4: Ensure that the LOCK code sets exception->inode All callers of nfs4_handle_exception() that need to handle NFS4ERR_OPENMODE correctly should set exception->inode Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/nfs4proc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f82bde0..3c787d0 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4558,7 +4558,9 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request) { struct nfs_server *server = NFS_SERVER(state->inode); - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .inode = state->inode, + }; int err; do { @@ -4576,7 +4578,9 @@ static int nfs4_lock_reclaim(struct nfs4_state *state, struct file_lock *request static int nfs4_lock_expired(struct nfs4_state *state, struct file_lock *request) { struct nfs_server *server = NFS_SERVER(state->inode); - struct nfs4_exception exception = { }; + struct nfs4_exception exception = { + .inode = state->inode, + }; int err; err = nfs4_set_lock_state(state, request); @@ -4676,6 +4680,7 @@ static int nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock * { struct nfs4_exception exception = { .state = state, + .inode = state->inode, }; int err; -- cgit v1.1 From 55725513b5ef9d462aa3e18527658a0362aaae83 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 18 Apr 2012 12:48:35 -0400 Subject: NFSv4: Ensure that we check lock exclusive/shared type against open modes Since we may be simulating flock() locks using NFS byte range locks, we can't rely on the VFS having checked the file open mode for us. Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/nfs4proc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3c787d0..ba837d9 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4726,6 +4726,20 @@ nfs4_proc_lock(struct file *filp, int cmd, struct file_lock *request) if (state == NULL) return -ENOLCK; + /* + * Don't rely on the VFS having checked the file open mode, + * since it won't do this for flock() locks. + */ + switch (request->fl_type & (F_RDLCK|F_WRLCK|F_UNLCK)) { + case F_RDLCK: + if (!(filp->f_mode & FMODE_READ)) + return -EBADF; + break; + case F_WRLCK: + if (!(filp->f_mode & FMODE_WRITE)) + return -EBADF; + } + do { status = nfs4_proc_setlk(state, cmd, request); if ((status != -EAGAIN) || IS_SETLK(cmd)) -- cgit v1.1 From 451146be933e26e21277852b5e40c6a52266ef96 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Wed, 18 Apr 2012 16:29:11 -0400 Subject: NFSv4: Fix open(O_TRUNC) and ftruncate() error handling If the file wasn't opened for writing, then truncate and ftruncate need to report the appropriate errors. Reported-by: Miklos Szeredi Signed-off-by: Trond Myklebust Cc: stable@vger.kernel.org --- fs/nfs/dir.c | 4 ++-- fs/nfs/nfs4proc.c | 15 ++++++++++++--- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 4aaf031..8789210 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1429,7 +1429,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry } open_flags = nd->intent.open.flags; - attr.ia_valid = 0; + attr.ia_valid = ATTR_OPEN; ctx = create_nfs_open_context(dentry, open_flags); res = ERR_CAST(ctx); @@ -1536,7 +1536,7 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd) if (IS_ERR(ctx)) goto out; - attr.ia_valid = 0; + attr.ia_valid = ATTR_OPEN; if (openflags & O_TRUNC) { attr.ia_valid |= ATTR_SIZE; attr.ia_size = 0; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ba837d9..f875cf3 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -1954,10 +1954,19 @@ static int nfs4_do_setattr(struct inode *inode, struct rpc_cred *cred, }; int err; do { - err = nfs4_handle_exception(server, - _nfs4_do_setattr(inode, cred, fattr, sattr, state), - &exception); + err = _nfs4_do_setattr(inode, cred, fattr, sattr, state); + switch (err) { + case -NFS4ERR_OPENMODE: + if (state && !(state->state & FMODE_WRITE)) { + err = -EBADF; + if (sattr->ia_valid & ATTR_OPEN) + err = -EACCES; + goto out; + } + } + err = nfs4_handle_exception(server, err, &exception); } while (exception.retry); +out: return err; } -- cgit v1.1 From 716af4abd6e6370226f567af50bfaca274515980 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Thu, 19 Apr 2012 10:00:19 +0300 Subject: ksz884x: don't copy too much in netdev_set_mac_address() MAX_ADDR_LEN is 32. ETH_ALEN is 6. mac->sa_data is a 14 byte array, so the memcpy() is doing a read past the end of the array. I asked about this on netdev and Ben Hutchings told me it's supposed to be copying ETH_ALEN bytes (thanks Ben). Signed-off-by: Dan Carpenter Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ksz884x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/micrel/ksz884x.c b/drivers/net/ethernet/micrel/ksz884x.c index ef723b1..eaf9ff0 100644 --- a/drivers/net/ethernet/micrel/ksz884x.c +++ b/drivers/net/ethernet/micrel/ksz884x.c @@ -5675,7 +5675,7 @@ static int netdev_set_mac_address(struct net_device *dev, void *addr) memcpy(hw->override_addr, mac->sa_data, ETH_ALEN); } - memcpy(dev->dev_addr, mac->sa_data, MAX_ADDR_LEN); + memcpy(dev->dev_addr, mac->sa_data, ETH_ALEN); interrupt = hw_block_intr(hw); -- cgit v1.1 From 3cd88f993e8b24855ed135b36bc6ed53dff38f08 Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 19 Apr 2012 19:35:10 +0100 Subject: Revert "ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus" This reverts commit 9f85550347f51c79a917b2aec04c90691c11e20a. Peter Zijlstra says: | Argh, how did that ever make it upstream, please drop. | | Russell, please make that go away upstream. | | Like I said, this is both completely the wrong way to solve, and you're | so not paying attention, see: | | 5fbd036b552f633abb394a319f7c62a5c86a9cd7 | 2baab4e90495ebc9826c93f79d74d6e60a828d24 | e3831edd59edf57ca11fc289f08961b20baf5146 | | What's even worse: | | git describe --contains 9f85550347f51c79a917b2aec04c90691c11e20a --match "v*" | v3.4-rc3~1^2~3 | | that nonsense got merged long after those other commits. Linus Walleij says: | My bad, was because the initial patch was submitted march 9th before | these fixes were merged: | http://marc.info/?l=linux-arm-kernel&m=133159655513844&w=2 | | It was pending for a while in Russell's patch tracker and I | rebased it to -rc2 without paying enough attention to recent | related scheduler fixes ... lesson learned. Signed-off-by: Russell King --- arch/arm/kernel/smp_twd.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c index 5b150af..fef42b2 100644 --- a/arch/arm/kernel/smp_twd.c +++ b/arch/arm/kernel/smp_twd.c @@ -118,14 +118,10 @@ static int twd_cpufreq_transition(struct notifier_block *nb, * The twd clock events must be reprogrammed to account for the new * frequency. The timer is local to a cpu, so cross-call to the * changing cpu. - * - * Only wait for it to finish, if the cpu is active to avoid - * deadlock when cpu1 is spinning on while(!cpu_active(cpu1)) during - * booting of that cpu. */ if (state == CPUFREQ_POSTCHANGE || state == CPUFREQ_RESUMECHANGE) smp_call_function_single(freqs->cpu, twd_update_frequency, - NULL, cpu_active(freqs->cpu)); + NULL, 1); return NOTIFY_OK; } -- cgit v1.1 From 18311c5395ca4d0c3fefa406da87a9d16efaca46 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 18 Apr 2012 03:59:01 -0300 Subject: [media] V4L: mt9m032: fix compilation breakage Fix the following compilation failure: linux-2.6/drivers/media/video/mt9m032.c: In function '__mt9m032_get_pad_crop': linux-2.6/drivers/media/video/mt9m032.c:337: error: implicit declaration of function 'v4l2_subdev_get_try_crop' linux-2.6/drivers/media/video/mt9m032.c:337: warning: return makes pointer from integer without a cast linux-2.6/drivers/media/video/mt9m032.c: In function '__mt9m032_get_pad_format': linux-2.6/drivers/media/video/mt9m032.c:359: error: implicit declaration of function 'v4l2_subdev_get_try_format' linux-2.6/drivers/media/video/mt9m032.c:359: warning: return makes pointer from integer without a cast linux-2.6/drivers/media/video/mt9m032.c: In function 'mt9m032_probe': linux-2.6/drivers/media/video/mt9m032.c:767: error: 'struct v4l2_subdev' has no member named 'entity' linux-2.6/drivers/media/video/mt9m032.c:826: error: 'struct v4l2_subdev' has no member named 'entity' linux-2.6/drivers/media/video/mt9m032.c: In function 'mt9m032_remove': linux-2.6/drivers/media/video/mt9m032.c:842: error: 'struct v4l2_subdev' has no member named 'entity' make[4]: *** [drivers/media/video/mt9m032.o] Error 1 by adding a dependency on VIDEO_V4L2_SUBDEV_API. Signed-off-by: Guennadi Liakhovetski Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig index f2479c5..ce1e7ba 100644 --- a/drivers/media/video/Kconfig +++ b/drivers/media/video/Kconfig @@ -492,7 +492,7 @@ config VIDEO_VS6624 config VIDEO_MT9M032 tristate "MT9M032 camera sensor support" - depends on I2C && VIDEO_V4L2 + depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API select VIDEO_APTINA_PLL ---help--- This driver supports MT9M032 camera sensors from Aptina, monochrome -- cgit v1.1 From 186bab1ce04f99153b7eeb3348438b654c24c24b Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Tue, 17 Apr 2012 14:35:49 -0400 Subject: xen/resume: Fix compile warnings. linux/drivers/xen/manage.c: In function 'do_suspend': linux/drivers/xen/manage.c:160:5: warning: 'si.cancelled' may be used uninitialized in this function Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/manage.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/xen/manage.c b/drivers/xen/manage.c index 9e14ae6..412b96c 100644 --- a/drivers/xen/manage.c +++ b/drivers/xen/manage.c @@ -132,6 +132,7 @@ static void do_suspend(void) err = dpm_suspend_end(PMSG_FREEZE); if (err) { printk(KERN_ERR "dpm_suspend_end failed: %d\n", err); + si.cancelled = 0; goto out_resume; } -- cgit v1.1 From e631f578048e2afd8bfede2e9dc86aa4592def3a Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Mon, 16 Apr 2012 14:59:32 -0300 Subject: [media] xc5000: support 32MHz & 31.875MHz xtal using the 41.024.5 firmware Rather than loading firmware specific for the xtal frequency, just use the standard firmware and set the xtal frequency after firmware upload. The modified firmware will never be released, so we're better off merging this now rather than waiting for v3.5. Signed-off-by: Michael Krufky Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/xc5000.c | 39 ++++++++++++++++++++++++++++++++---- drivers/media/common/tuners/xc5000.h | 1 + 2 files changed, 36 insertions(+), 4 deletions(-) diff --git a/drivers/media/common/tuners/xc5000.c b/drivers/media/common/tuners/xc5000.c index 7f98984..eab2ea4 100644 --- a/drivers/media/common/tuners/xc5000.c +++ b/drivers/media/common/tuners/xc5000.c @@ -54,6 +54,7 @@ struct xc5000_priv { struct list_head hybrid_tuner_instance_list; u32 if_khz; + u32 xtal_khz; u32 freq_hz; u32 bandwidth; u8 video_standard; @@ -214,9 +215,9 @@ static const struct xc5000_fw_cfg xc5000a_1_6_114 = { .size = 12401, }; -static const struct xc5000_fw_cfg xc5000c_41_024_5_31875 = { - .name = "dvb-fe-xc5000c-41.024.5-31875.fw", - .size = 16503, +static const struct xc5000_fw_cfg xc5000c_41_024_5 = { + .name = "dvb-fe-xc5000c-41.024.5.fw", + .size = 16497, }; static inline const struct xc5000_fw_cfg *xc5000_assign_firmware(int chip_id) @@ -226,7 +227,7 @@ static inline const struct xc5000_fw_cfg *xc5000_assign_firmware(int chip_id) case XC5000A: return &xc5000a_1_6_114; case XC5000C: - return &xc5000c_41_024_5_31875; + return &xc5000c_41_024_5; } } @@ -572,6 +573,31 @@ static int xc_tune_channel(struct xc5000_priv *priv, u32 freq_hz, int mode) return found; } +static int xc_set_xtal(struct dvb_frontend *fe) +{ + struct xc5000_priv *priv = fe->tuner_priv; + int ret = XC_RESULT_SUCCESS; + + switch (priv->chip_id) { + default: + case XC5000A: + /* 32.000 MHz xtal is default */ + break; + case XC5000C: + switch (priv->xtal_khz) { + default: + case 32000: + /* 32.000 MHz xtal is default */ + break; + case 31875: + /* 31.875 MHz xtal configuration */ + ret = xc_write_reg(priv, 0x000f, 0x8081); + break; + } + break; + } + return ret; +} static int xc5000_fwupload(struct dvb_frontend *fe) { @@ -603,6 +629,8 @@ static int xc5000_fwupload(struct dvb_frontend *fe) } else { printk(KERN_INFO "xc5000: firmware uploading...\n"); ret = xc_load_i2c_sequence(fe, fw->data); + if (XC_RESULT_SUCCESS == ret) + ret = xc_set_xtal(fe); printk(KERN_INFO "xc5000: firmware upload complete...\n"); } @@ -1164,6 +1192,9 @@ struct dvb_frontend *xc5000_attach(struct dvb_frontend *fe, priv->if_khz = cfg->if_khz; } + if (priv->xtal_khz == 0) + priv->xtal_khz = cfg->xtal_khz; + if (priv->radio_input == 0) priv->radio_input = cfg->radio_input; diff --git a/drivers/media/common/tuners/xc5000.h b/drivers/media/common/tuners/xc5000.h index 3396f8e..39a73bf 100644 --- a/drivers/media/common/tuners/xc5000.h +++ b/drivers/media/common/tuners/xc5000.h @@ -34,6 +34,7 @@ struct xc5000_config { u8 i2c_address; u32 if_khz; u8 radio_input; + u32 xtal_khz; int chip_id; }; -- cgit v1.1 From 7e5998aa74065d3ab31d17e667f40ffebf4b8425 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 17 Apr 2012 20:53:42 +0000 Subject: bnx2x: off by one in bnx2x_ets_e3b0_sp_pri_to_cos_set() The sp_pri_to_cos[] array size depends on the config but lets say it is BX_E3B0_MAX_NUM_COS_PORT0 and max_num_of_cos is also DCBX_E3B0_MAX_NUM_COS_PORT0. In the original code "pri == max_num_of_cos" was accepted but it is one past the end of the array. Also we used "pri" before capping it. It's a harmless read past the end of the array, but it would affect which error message gets printed. Signed-off-by: Dan Carpenter Acked-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c index ad95324..64392ec 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c @@ -942,6 +942,12 @@ static int bnx2x_ets_e3b0_sp_pri_to_cos_set(const struct link_params *params, const u8 max_num_of_cos = (port) ? DCBX_E3B0_MAX_NUM_COS_PORT1 : DCBX_E3B0_MAX_NUM_COS_PORT0; + if (pri >= max_num_of_cos) { + DP(NETIF_MSG_LINK, "bnx2x_ets_e3b0_sp_pri_to_cos_set invalid " + "parameter Illegal strict priority\n"); + return -EINVAL; + } + if (sp_pri_to_cos[pri] != DCBX_INVALID_COS) { DP(NETIF_MSG_LINK, "bnx2x_ets_e3b0_sp_pri_to_cos_set invalid " "parameter There can't be two COS's with " @@ -949,12 +955,6 @@ static int bnx2x_ets_e3b0_sp_pri_to_cos_set(const struct link_params *params, return -EINVAL; } - if (pri > max_num_of_cos) { - DP(NETIF_MSG_LINK, "bnx2x_ets_e3b0_sp_pri_to_cos_set invalid " - "parameter Illegal strict priority\n"); - return -EINVAL; - } - sp_pri_to_cos[pri] = cos_entry; return 0; -- cgit v1.1 From 3bc17d10c9f8ac67eb474737d74894ef2e60d27c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Tue, 17 Apr 2012 09:38:23 +0000 Subject: net: qmi_wwan: support Sierra Wireless MC77xx devices in QMI mode MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The MC77xx devices can operate in two modes: "Direct IP" or "QMI", switchable using a password protected AT command. Both product ID and USB interface configuration will change when switched. The "sierra_net" driver supports the "Direct IP" mode. This driver supports the "QMI" mode. There are also multiple possible USB interface configurations in each mode, some providing more than one wwan interface. Like many other devices made for Windows, different interface types are identified using a static interface number. We define a Sierra specific interface whitelist to support this. Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/qmi_wwan.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c index 552d24b..d316503b 100644 --- a/drivers/net/usb/qmi_wwan.c +++ b/drivers/net/usb/qmi_wwan.c @@ -365,6 +365,27 @@ static const struct driver_info qmi_wwan_force_int4 = { .data = BIT(4), /* interface whitelist bitmap */ }; +/* Sierra Wireless provide equally useless interface descriptors + * Devices in QMI mode can be switched between two different + * configurations: + * a) USB interface #8 is QMI/wwan + * b) USB interfaces #8, #19 and #20 are QMI/wwan + * + * Both configurations provide a number of other interfaces (serial++), + * some of which have the same endpoint configuration as we expect, so + * a whitelist or blacklist is necessary. + * + * FIXME: The below whitelist should include BIT(20). It does not + * because I cannot get it to work... + */ +static const struct driver_info qmi_wwan_sierra = { + .description = "Sierra Wireless wwan/QMI device", + .flags = FLAG_WWAN, + .bind = qmi_wwan_bind_gobi, + .unbind = qmi_wwan_unbind_shared, + .manage_power = qmi_wwan_manage_power, + .data = BIT(8) | BIT(19), /* interface whitelist bitmap */ +}; #define HUAWEI_VENDOR_ID 0x12D1 #define QMI_GOBI_DEVICE(vend, prod) \ @@ -445,6 +466,15 @@ static const struct usb_device_id products[] = { .bInterfaceProtocol = 0xff, .driver_info = (unsigned long)&qmi_wwan_force_int4, }, + { /* Sierra Wireless MC77xx in QMI mode */ + .match_flags = USB_DEVICE_ID_MATCH_DEVICE | USB_DEVICE_ID_MATCH_INT_INFO, + .idVendor = 0x1199, + .idProduct = 0x68a2, + .bInterfaceClass = 0xff, + .bInterfaceSubClass = 0xff, + .bInterfaceProtocol = 0xff, + .driver_info = (unsigned long)&qmi_wwan_sierra, + }, {QMI_GOBI_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */ {QMI_GOBI_DEVICE(0x03f0, 0x1f1d)}, /* HP un2400 Gobi Modem Device */ {QMI_GOBI_DEVICE(0x03f0, 0x371d)}, /* HP un2430 Mobile Broadband Module */ -- cgit v1.1 From b9a6a23566960d0dd3f51e2e68b472cd61911078 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 18 Apr 2012 17:31:58 +0200 Subject: tick: Ensure that the broadcast device is initialized Santosh found another trap when we avoid to initialize the broadcast device in the switch_to_oneshot code. The broadcast device might be still in SHUTDOWN state when we actually need to use it. That obviously breaks, as set_next_event() is called on a shutdown device. This did not break on x86, but Suresh analyzed it: From the review, most likely on Sven's system we are force enabling the hpet using the pci quirk's method very late. And in this case, hpet_clockevent (which will be global_clock_event) handler can be null, specifically as this platform might not be using deeper c-states and using the reliable APIC timer. Prior to commit 'fa4da365bc7772c', that handler will be set to 'tick_handle_oneshot_broadcast' when we switch the broadcast timer to oneshot mode, even though we don't use it. Post commit 'fa4da365bc7772c', we stopped switching the broadcast mode to oneshot as this is not really needed and his platform's global_clock_event's handler will remain null. While on my SNB laptop, same is set to 'clockevents_handle_noop' because hpet gets enabled very early. (noop handler on my platform set when the early enabled hpet timer gets replaced by the lapic timer). But the commit 'fa4da365bc7772c' tracked the broadcast timer mode in the SW as oneshot, even though it didn't touch the HW timer. During resume however, tick_resume_broadcast() saw the SW broadcast mode as oneshot and actually programmed the broadcast device also into oneshot mode. So this triggered the null pointer de-reference after the hpet wraps around and depending on what the hpet counter is set to. On the normal platforms where hpet gets enabled early we should be seeing a spurious interrupt (in my SNB laptop I see one spurious interrupt after around 5 minutes ;) which is 32-bit hpet counter wraparound time), but that's a separate issue. Enforce the mode setting when trying to set an event. Reported-and-tested-by: Santosh Shilimkar Signed-off-by: Thomas Gleixner Acked-by: Suresh Siddha Cc: torvalds@linux-foundation.org Cc: svenjoac@gmx.de Cc: rjw@sisk.pl Link: http://lkml.kernel.org/r/alpine.LFD.2.02.1204181723350.2542@ionos --- kernel/time/tick-broadcast.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 119aca5..029531f 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -373,6 +373,9 @@ static int tick_broadcast_set_event(ktime_t expires, int force) { struct clock_event_device *bc = tick_broadcast_device.evtdev; + if (bc->mode != CLOCK_EVT_MODE_ONESHOT) + clockevents_set_mode(bc, CLOCK_EVT_MODE_ONESHOT); + return clockevents_program_event(bc, expires, force); } -- cgit v1.1 From a6371f80230eaaafd7eef7efeedaa9509bdc982d Mon Sep 17 00:00:00 2001 From: Suresh Siddha Date: Wed, 18 Apr 2012 19:27:39 -0700 Subject: tick: Fix the spurious broadcast timer ticks after resume During resume, tick_resume_broadcast() programs the broadcast timer in oneshot mode unconditionally. On the platforms where broadcast timer is not really required, this will generate spurious broadcast timer ticks upon resume. For example, on the always running apic timer platforms with HPET, I see spurious hpet tick once every ~5minutes (which is the 32-bit hpet counter wraparound time). Similar to boot time, during resume make the oneshot mode setting of the broadcast clock event device conditional on the state of active broadcast users. Signed-off-by: Suresh Siddha Tested-by: Santosh Shilimkar Tested-by: svenjoac@gmx.de Cc: torvalds@linux-foundation.org Cc: rjw@sisk.pl Link: http://lkml.kernel.org/r/1334802459.28674.209.camel@sbsiddha-desk.sc.intel.com Signed-off-by: Thomas Gleixner --- kernel/time/tick-broadcast.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index 029531f..f113755 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -346,7 +346,8 @@ int tick_resume_broadcast(void) tick_get_broadcast_mask()); break; case TICKDEV_MODE_ONESHOT: - broadcast = tick_resume_broadcast_oneshot(bc); + if (!cpumask_empty(tick_get_broadcast_mask())) + broadcast = tick_resume_broadcast_oneshot(bc); break; } } -- cgit v1.1 From 996f73937cd85031da8dbcd3222a710cb762d428 Mon Sep 17 00:00:00 2001 From: Giuseppe CAVALLARO Date: Tue, 17 Apr 2012 21:16:40 +0000 Subject: icplus: fix interrupt for IC+ 101A/G and 1001LF This patch fixes and adds the irq handler for the IC+ 101A/G where we need to read the reg17 to clean the irq. Also remove the flag for the 1001LF where no interrupt can be used for this device. Signed-off-by: Giuseppe Cavallaro Signed-off-by: David S. Miller --- drivers/net/phy/icplus.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c index f08c85a..5ac46f5 100644 --- a/drivers/net/phy/icplus.c +++ b/drivers/net/phy/icplus.c @@ -40,6 +40,7 @@ MODULE_LICENSE("GPL"); #define IP1001_PHASE_SEL_MASK 3 /* IP1001 RX/TXPHASE_SEL */ #define IP1001_APS_ON 11 /* IP1001 APS Mode bit */ #define IP101A_G_APS_ON 2 /* IP101A/G APS Mode bit */ +#define IP101A_G_IRQ_CONF_STATUS 0x11 /* Conf Info IRQ & Status Reg */ static int ip175c_config_init(struct phy_device *phydev) { @@ -185,6 +186,15 @@ static int ip175c_config_aneg(struct phy_device *phydev) return 0; } +static int ip101a_g_ack_interrupt(struct phy_device *phydev) +{ + int err = phy_read(phydev, IP101A_G_IRQ_CONF_STATUS); + if (err < 0) + return err; + + return 0; +} + static struct phy_driver ip175c_driver = { .phy_id = 0x02430d80, .name = "ICPlus IP175C", @@ -204,7 +214,6 @@ static struct phy_driver ip1001_driver = { .phy_id_mask = 0x0ffffff0, .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, - .flags = PHY_HAS_INTERRUPT, .config_init = &ip1001_config_init, .config_aneg = &genphy_config_aneg, .read_status = &genphy_read_status, @@ -220,6 +229,7 @@ static struct phy_driver ip101a_g_driver = { .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_INTERRUPT, + .ack_interrupt = ip101a_g_ack_interrupt, .config_init = &ip101a_g_config_init, .config_aneg = &genphy_config_aneg, .read_status = &genphy_read_status, -- cgit v1.1 From 3adadc08cc1e2cbcc15a640d639297ef5fcb17f5 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Wed, 18 Apr 2012 16:11:23 +0000 Subject: net ax25: Reorder ax25_exit to remove races. While reviewing the sysctl code in ax25 I spotted races in ax25_exit where it is possible to receive notifications and packets after already freeing up some of the data structures needed to process those notifications and updates. Call unregister_netdevice_notifier early so that the rest of the cleanup code does not need to deal with network devices. This takes advantage of my recent enhancement to unregister_netdevice_notifier to send unregister notifications of all network devices that are current registered. Move the unregistration for packet types, socket types and protocol types before we cleanup any of the ax25 data structures to remove the possibilities of other races. Signed-off-by: Eric W. Biederman Signed-off-by: David S. Miller --- net/ax25/af_ax25.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c index 0906c19..9d9a6a3 100644 --- a/net/ax25/af_ax25.c +++ b/net/ax25/af_ax25.c @@ -2011,16 +2011,17 @@ static void __exit ax25_exit(void) proc_net_remove(&init_net, "ax25_route"); proc_net_remove(&init_net, "ax25"); proc_net_remove(&init_net, "ax25_calls"); - ax25_rt_free(); - ax25_uid_free(); - ax25_dev_free(); - ax25_unregister_sysctl(); unregister_netdevice_notifier(&ax25_dev_notifier); + ax25_unregister_sysctl(); dev_remove_pack(&ax25_packet_type); sock_unregister(PF_AX25); proto_unregister(&ax25_proto); + + ax25_rt_free(); + ax25_uid_free(); + ax25_dev_free(); } module_exit(ax25_exit); -- cgit v1.1 From 8a95bc8dfe06982fc2b8a0a2adda7baa2346a17b Mon Sep 17 00:00:00 2001 From: Timur Tabi Date: Wed, 30 Nov 2011 10:19:17 -0600 Subject: powerpc/85xx: don't call of_platform_bus_probe() twice Commit 46d026ac ("powerpc/85xx: consolidate of_platform_bus_probe calls") replaced platform-specific of_device_id tables with a single function that probes the most of the busses in 85xx device trees. If a specific platform needed additional busses probed, then it could call of_platform_bus_probe() again. Typically, the additional platform-specific busses are children of existing busses that have already been probed. of_platform_bus_probe() does not handle those child busses automatically. Unfortunately, this doesn't actually work. The second (platform-specific) call to of_platform_bus_probe() never finds any of the busses it's asked to find. To remedy this, the platform-specific of_device_id tables are eliminated, and their entries are merged into mpc85xx_common_ids[], so that all busses are probed at once. Signed-off-by: Timur Tabi Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/common.c | 6 ++++++ arch/powerpc/platforms/85xx/mpc85xx_mds.c | 11 +---------- arch/powerpc/platforms/85xx/p1022_ds.c | 13 +------------ 3 files changed, 8 insertions(+), 22 deletions(-) diff --git a/arch/powerpc/platforms/85xx/common.c b/arch/powerpc/platforms/85xx/common.c index 9fef530..67dac22 100644 --- a/arch/powerpc/platforms/85xx/common.c +++ b/arch/powerpc/platforms/85xx/common.c @@ -21,6 +21,12 @@ static struct of_device_id __initdata mpc85xx_common_ids[] = { { .compatible = "fsl,qe", }, { .compatible = "fsl,cpm2", }, { .compatible = "fsl,srio", }, + /* So that the DMA channel nodes can be probed individually: */ + { .compatible = "fsl,eloplus-dma", }, + /* For the PMC driver */ + { .compatible = "fsl,mpc8548-guts", }, + /* Probably unnecessary? */ + { .compatible = "gpio-leds", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 9a6f044..d208ebc 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -399,12 +399,6 @@ static int __init board_fixups(void) machine_arch_initcall(mpc8568_mds, board_fixups); machine_arch_initcall(mpc8569_mds, board_fixups); -static struct of_device_id mpc85xx_ids[] = { - { .compatible = "fsl,mpc8548-guts", }, - { .compatible = "gpio-leds", }, - {}, -}; - static int __init mpc85xx_publish_devices(void) { if (machine_is(mpc8568_mds)) @@ -412,10 +406,7 @@ static int __init mpc85xx_publish_devices(void) if (machine_is(mpc8569_mds)) simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio"); - mpc85xx_common_publish_devices(); - of_platform_bus_probe(NULL, mpc85xx_ids, NULL); - - return 0; + return mpc85xx_common_publish_devices(); } machine_device_initcall(mpc8568_mds, mpc85xx_publish_devices); diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c index e74b7cd..f700c81 100644 --- a/arch/powerpc/platforms/85xx/p1022_ds.c +++ b/arch/powerpc/platforms/85xx/p1022_ds.c @@ -460,18 +460,7 @@ static void __init p1022_ds_setup_arch(void) pr_info("Freescale P1022 DS reference board\n"); } -static struct of_device_id __initdata p1022_ds_ids[] = { - /* So that the DMA channel nodes can be probed individually: */ - { .compatible = "fsl,eloplus-dma", }, - {}, -}; - -static int __init p1022_ds_publish_devices(void) -{ - mpc85xx_common_publish_devices(); - return of_platform_bus_probe(NULL, p1022_ds_ids, NULL); -} -machine_device_initcall(p1022_ds, p1022_ds_publish_devices); +machine_device_initcall(p1022_ds, mpc85xx_common_publish_devices); machine_arch_initcall(p1022_ds, swiotlb_setup_bus_notifier); -- cgit v1.1 From eda713e219c9a7d02b8263ab3fba44092e919b07 Mon Sep 17 00:00:00 2001 From: Baruch Siach Date: Thu, 19 Apr 2012 09:32:06 +0300 Subject: powerpc: fix build when CONFIG_BOOKE_WDT is enabled Commit ae3a197e (Disintegrate asm/system.h for PowerPC) broke build of assembly files when CONFIG_BOOKE_WDT is enabled as follows: AS arch/powerpc/lib/string.o /home/baruch/git/stable/arch/powerpc/include/asm/reg_booke.h: Assembler messages: /home/baruch/git/stable/arch/powerpc/include/asm/reg_booke.h:19: Error: Unrecognized opcode: `extern' /home/baruch/git/stable/arch/powerpc/include/asm/reg_booke.h:20: Error: Unrecognized opcode: `extern' Since setup_32.c is the only user of the booke_wdt configuration variables, move the declarations there. Cc: David Howells Signed-off-by: Baruch Siach Signed-off-by: Kumar Gala --- arch/powerpc/include/asm/reg_booke.h | 5 ----- arch/powerpc/kernel/setup_32.c | 3 +++ 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/include/asm/reg_booke.h b/arch/powerpc/include/asm/reg_booke.h index b86faa9..8a97aa7 100644 --- a/arch/powerpc/include/asm/reg_booke.h +++ b/arch/powerpc/include/asm/reg_booke.h @@ -15,11 +15,6 @@ #ifndef __ASM_POWERPC_REG_BOOKE_H__ #define __ASM_POWERPC_REG_BOOKE_H__ -#ifdef CONFIG_BOOKE_WDT -extern u32 booke_wdt_enabled; -extern u32 booke_wdt_period; -#endif /* CONFIG_BOOKE_WDT */ - /* Machine State Register (MSR) Fields */ #define MSR_GS (1<<28) /* Guest state */ #define MSR_UCLE (1<<26) /* User-mode cache lock enable */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 9825f29..ec8a53f 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -150,6 +150,9 @@ notrace void __init machine_init(u64 dt_ptr) } #ifdef CONFIG_BOOKE_WDT +extern u32 booke_wdt_enabled; +extern u32 booke_wdt_period; + /* Checks wdt=x and wdt_period=xx command-line option */ notrace int __init early_parse_wdt(char *p) { -- cgit v1.1 From bdce27c7f7bc7cf5c3a264bab9de056bd9cb0c9d Mon Sep 17 00:00:00 2001 From: Mingkai Hu Date: Mon, 16 Apr 2012 10:05:05 +0800 Subject: powerpc/mpic_msgr: fix compile error when SMP disabled In file included from arch/powerpc/sysdev/mpic_msgr.c:20:0: ~/arch/powerpc/include/asm/mpic_msgr.h: In function 'mpic_msgr_set_destination': ~/arch/powerpc/include/asm/mpic_msgr.h:117:2: error: implicit declaration of function 'get_hard_smp_processor_id' make[1]: *** [arch/powerpc/sysdev/mpic_msgr.o] Error 1 Signed-off-by: Mingkai Hu Signed-off-by: Kumar Gala --- arch/powerpc/include/asm/mpic_msgr.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/include/asm/mpic_msgr.h b/arch/powerpc/include/asm/mpic_msgr.h index 3ec37dc..326d33c 100644 --- a/arch/powerpc/include/asm/mpic_msgr.h +++ b/arch/powerpc/include/asm/mpic_msgr.h @@ -13,6 +13,7 @@ #include #include +#include struct mpic_msgr { u32 __iomem *base; -- cgit v1.1 From e0a5a6c38190a5016bcb0f1267324a19b846a35a Mon Sep 17 00:00:00 2001 From: Mingkai Hu Date: Mon, 16 Apr 2012 10:05:06 +0800 Subject: powerpc/mpic_msgr: add lock for MPIC message global variable Also fix issue of accessing invalid msgr pointer issue. The local msgr pointer in fucntion mpic_msgr_get will be accessed before getting a valid address which will cause kernel crash. Signed-off-by: Mingkai Hu Signed-off-by: Kumar Gala --- arch/powerpc/sysdev/mpic_msgr.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index 6e7fa38..dc1cfe3 100644 --- a/arch/powerpc/sysdev/mpic_msgr.c +++ b/arch/powerpc/sysdev/mpic_msgr.c @@ -27,6 +27,7 @@ static struct mpic_msgr **mpic_msgrs; static unsigned int mpic_msgr_count; +static DEFINE_RAW_SPINLOCK(msgrs_lock); static inline void _mpic_msgr_mer_write(struct mpic_msgr *msgr, u32 value) { @@ -56,12 +57,11 @@ struct mpic_msgr *mpic_msgr_get(unsigned int reg_num) if (reg_num >= mpic_msgr_count) return ERR_PTR(-ENODEV); - raw_spin_lock_irqsave(&msgr->lock, flags); - if (mpic_msgrs[reg_num]->in_use == MSGR_FREE) { - msgr = mpic_msgrs[reg_num]; + raw_spin_lock_irqsave(&msgrs_lock, flags); + msgr = mpic_msgrs[reg_num]; + if (msgr->in_use == MSGR_FREE) msgr->in_use = MSGR_INUSE; - } - raw_spin_unlock_irqrestore(&msgr->lock, flags); + raw_spin_unlock_irqrestore(&msgrs_lock, flags); return msgr; } -- cgit v1.1 From dea58bd1cab8f6687a784cdacca242b6cac95ede Mon Sep 17 00:00:00 2001 From: Mingkai Hu Date: Mon, 16 Apr 2012 10:05:07 +0800 Subject: powerpc/mpic_msgr: fix offset error when setting mer register Signed-off-by: Mingkai Hu Signed-off-by: Kumar Gala --- arch/powerpc/sysdev/mpic_msgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index dc1cfe3..483d8fa 100644 --- a/arch/powerpc/sysdev/mpic_msgr.c +++ b/arch/powerpc/sysdev/mpic_msgr.c @@ -228,7 +228,7 @@ static __devinit int mpic_msgr_probe(struct platform_device *dev) reg_number = block_number * MPIC_MSGR_REGISTERS_PER_BLOCK + i; msgr->base = msgr_block_addr + i * MPIC_MSGR_STRIDE; - msgr->mer = msgr->base + MPIC_MSGR_MER_OFFSET; + msgr->mer = (u32 *)((u8 *)msgr->base + MPIC_MSGR_MER_OFFSET); msgr->in_use = MSGR_FREE; msgr->num = i; raw_spin_lock_init(&msgr->lock); -- cgit v1.1 From 4351f30a35b8c6a6b6d4d36e5c2dc8ec0262b2ca Mon Sep 17 00:00:00 2001 From: Mingkai Hu Date: Mon, 16 Apr 2012 10:05:08 +0800 Subject: powerpc/mpc85xx: add MPIC message dts node Signed-off-by: Mingkai Hu Signed-off-by: Kumar Gala --- arch/powerpc/boot/dts/fsl/pq3-mpic-message-B.dtsi | 43 +++++++++++++++++++++++ arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi | 10 ++++++ 2 files changed, 53 insertions(+) create mode 100644 arch/powerpc/boot/dts/fsl/pq3-mpic-message-B.dtsi diff --git a/arch/powerpc/boot/dts/fsl/pq3-mpic-message-B.dtsi b/arch/powerpc/boot/dts/fsl/pq3-mpic-message-B.dtsi new file mode 100644 index 0000000..1cf0b77 --- /dev/null +++ b/arch/powerpc/boot/dts/fsl/pq3-mpic-message-B.dtsi @@ -0,0 +1,43 @@ +/* + * PQ3 MPIC Message (Group B) device tree stub [ controller @ offset 0x42400 ] + * + * Copyright 2012 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +message@42400 { + compatible = "fsl,mpic-v3.1-msgr"; + reg = <0x42400 0x200>; + interrupts = < + 0xb4 2 0 0 + 0xb5 2 0 0 + 0xb6 2 0 0 + 0xb7 2 0 0>; +}; diff --git a/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi b/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi index fdedf7b..71c30eb 100644 --- a/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi +++ b/arch/powerpc/boot/dts/fsl/pq3-mpic.dtsi @@ -53,6 +53,16 @@ timer@41100 { 3 0 3 0>; }; +message@41400 { + compatible = "fsl,mpic-v3.1-msgr"; + reg = <0x41400 0x200>; + interrupts = < + 0xb0 2 0 0 + 0xb1 2 0 0 + 0xb2 2 0 0 + 0xb3 2 0 0>; +}; + msi@41600 { compatible = "fsl,mpic-msi"; reg = <0x41600 0x80>; -- cgit v1.1 From db4c75cbebd7e5910cd3bcb6790272fcc3042857 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Thu, 19 Apr 2012 10:31:47 -0400 Subject: tracing: Fix stacktrace of latency tracers (irqsoff and friends) While debugging a latency with someone on IRC (mirage335) on #linux-rt (OFTC), we discovered that the stacktrace output of the latency tracers (preemptirqsoff) was empty. This bug was caused by the creation of the dynamic length stack trace again (like commit 12b5da3 "tracing: Fix ent_size in trace output" was). This bug is caused by the latency tracers requiring the next event to determine the time between the current event and the next. But by grabbing the next event, the iter->ent_size is set to the next event instead of the current one. As the stacktrace event is the last event, this makes the ent_size zero and causes nothing to be printed for the stack trace. The dynamic stacktrace uses the ent_size to determine how much of the stack can be printed. The ent_size of zero means no stack. The simple fix is to save the iter->ent_size before finding the next event. Note, mirage335 asked to remain anonymous from LKML and git, so I will not add the Reported-by and Tested-by tags, even though he did report the issue and tested the fix. Cc: stable@vger.kernel.org # 3.1+ Signed-off-by: Steven Rostedt --- kernel/trace/trace_output.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 859fae6b..df611a0 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -652,6 +652,8 @@ int trace_print_lat_context(struct trace_iterator *iter) { u64 next_ts; int ret; + /* trace_find_next_entry will reset ent_size */ + int ent_size = iter->ent_size; struct trace_seq *s = &iter->seq; struct trace_entry *entry = iter->ent, *next_entry = trace_find_next_entry(iter, NULL, @@ -660,6 +662,9 @@ int trace_print_lat_context(struct trace_iterator *iter) unsigned long abs_usecs = ns2usecs(iter->ts - iter->tr->time_start); unsigned long rel_usecs; + /* Restore the original ent_size */ + iter->ent_size = ent_size; + if (!next_entry) next_ts = iter->ts; rel_usecs = ns2usecs(next_ts - iter->ts); -- cgit v1.1 From d3a7b83f865b46bb7b5e1ed18a129ce1af349db4 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 19 Apr 2012 18:12:40 +0200 Subject: drivers/tty/amiserial.c: add missing tty_unlock tty_unlock is used on all other exits from the function. Signed-off-by: Julia Lawall Acked-by: Jiri Slaby Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/tty/amiserial.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c index 24145c3..6cc4358 100644 --- a/drivers/tty/amiserial.c +++ b/drivers/tty/amiserial.c @@ -1073,8 +1073,10 @@ static int set_serial_info(struct tty_struct *tty, struct serial_state *state, (new_serial.close_delay != port->close_delay) || (new_serial.xmit_fifo_size != state->xmit_fifo_size) || ((new_serial.flags & ~ASYNC_USR_MASK) != - (port->flags & ~ASYNC_USR_MASK))) + (port->flags & ~ASYNC_USR_MASK))) { + tty_unlock(); return -EPERM; + } port->flags = ((port->flags & ~ASYNC_USR_MASK) | (new_serial.flags & ASYNC_USR_MASK)); state->custom_divisor = new_serial.custom_divisor; -- cgit v1.1 From 3af9d8f227a31e25b3110ef175d105798fc147a6 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Fri, 13 Apr 2012 17:16:59 -0400 Subject: cifs: fix offset handling in cifs_iovec_write In the recent update of the cifs_iovec_write code to use async writes, the handling of the file position was broken. That patch added a local "offset" variable to handle the offset, and then only updated the original "*poffset" before exiting. Unfortunately, it copied off the original offset from the beginning, instead of doing so after generic_write_checks had been called. Fix this by moving the initialization of "offset" after that in the function. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/file.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index fae765d..81725e9 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2178,7 +2178,7 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, unsigned long nr_pages, i; size_t copied, len, cur_len; ssize_t total_written = 0; - loff_t offset = *poffset; + loff_t offset; struct iov_iter it; struct cifsFileInfo *open_file; struct cifs_tcon *tcon; @@ -2200,6 +2200,7 @@ cifs_iovec_write(struct file *file, const struct iovec *iov, cifs_sb = CIFS_SB(file->f_path.dentry->d_sb); open_file = file->private_data; tcon = tlink_tcon(open_file->tlink); + offset = *poffset; if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD) pid = open_file->pid; -- cgit v1.1 From a102962ffd45fe8bac68ea6d9f72d3ed19dc44e1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 31 Mar 2012 17:44:53 +0100 Subject: ARM: ux300: Fix unimplementable regulation constraints It doesn't make sense to grant permission to change the status of a regulator that is also set as always on and similarly it doesn't make sense to allow a driver to change the voltage of a regulator which can only be set to a single voltage. Signed-off-by: Mark Brown Signed-off-by: Linus Walleij --- arch/arm/mach-u300/i2c.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/arm/mach-u300/i2c.c b/arch/arm/mach-u300/i2c.c index a38f802..cb04bd6 100644 --- a/arch/arm/mach-u300/i2c.c +++ b/arch/arm/mach-u300/i2c.c @@ -146,9 +146,6 @@ static struct ab3100_platform_data ab3100_plf_data = { .min_uV = 1800000, .max_uV = 1800000, .valid_modes_mask = REGULATOR_MODE_NORMAL, - .valid_ops_mask = - REGULATOR_CHANGE_VOLTAGE | - REGULATOR_CHANGE_STATUS, .always_on = 1, .boot_on = 1, }, @@ -160,9 +157,6 @@ static struct ab3100_platform_data ab3100_plf_data = { .min_uV = 2500000, .max_uV = 2500000, .valid_modes_mask = REGULATOR_MODE_NORMAL, - .valid_ops_mask = - REGULATOR_CHANGE_VOLTAGE | - REGULATOR_CHANGE_STATUS, .always_on = 1, .boot_on = 1, }, @@ -230,8 +224,7 @@ static struct ab3100_platform_data ab3100_plf_data = { .max_uV = 1800000, .valid_modes_mask = REGULATOR_MODE_NORMAL, .valid_ops_mask = - REGULATOR_CHANGE_VOLTAGE | - REGULATOR_CHANGE_STATUS, + REGULATOR_CHANGE_VOLTAGE, .always_on = 1, .boot_on = 1, }, -- cgit v1.1 From 1344500e2d79d09db81f748984697cbdd6b02279 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 18 Apr 2012 15:29:58 +0200 Subject: ARM: u300: bump all IRQ numbers by one Since the VIC was converted to use generic IRQ domains IRQ 0 is silently ignored. This IRQ is used on the U300 so we're missing it now. Bump all IRQ numbers by one since they are now decoupled from the hardware IRQ numbers. Cc: Grant Likely Cc: Rob Herring Signed-off-by: Linus Walleij --- arch/arm/mach-u300/core.c | 6 +- arch/arm/mach-u300/include/mach/irqs.h | 150 ++++++++++++++++----------------- 2 files changed, 79 insertions(+), 77 deletions(-) diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c index 1621ad0..3333974 100644 --- a/arch/arm/mach-u300/core.c +++ b/arch/arm/mach-u300/core.c @@ -1667,8 +1667,10 @@ void __init u300_init_irq(void) for (i = 0; i < U300_VIC_IRQS_END; i++) set_bit(i, (unsigned long *) &mask[0]); - vic_init((void __iomem *) U300_INTCON0_VBASE, 0, mask[0], mask[0]); - vic_init((void __iomem *) U300_INTCON1_VBASE, 32, mask[1], mask[1]); + vic_init((void __iomem *) U300_INTCON0_VBASE, IRQ_U300_INTCON0_START, + mask[0], mask[0]); + vic_init((void __iomem *) U300_INTCON1_VBASE, IRQ_U300_INTCON1_START, + mask[1], mask[1]); } diff --git a/arch/arm/mach-u300/include/mach/irqs.h b/arch/arm/mach-u300/include/mach/irqs.h index ee78a26..ec09c1e 100644 --- a/arch/arm/mach-u300/include/mach/irqs.h +++ b/arch/arm/mach-u300/include/mach/irqs.h @@ -12,101 +12,101 @@ #ifndef __MACH_IRQS_H #define __MACH_IRQS_H -#define IRQ_U300_INTCON0_START 0 -#define IRQ_U300_INTCON1_START 32 +#define IRQ_U300_INTCON0_START 1 +#define IRQ_U300_INTCON1_START 33 /* These are on INTCON0 - 30 lines */ -#define IRQ_U300_IRQ0_EXT 0 -#define IRQ_U300_IRQ1_EXT 1 -#define IRQ_U300_DMA 2 -#define IRQ_U300_VIDEO_ENC_0 3 -#define IRQ_U300_VIDEO_ENC_1 4 -#define IRQ_U300_AAIF_RX 5 -#define IRQ_U300_AAIF_TX 6 -#define IRQ_U300_AAIF_VGPIO 7 -#define IRQ_U300_AAIF_WAKEUP 8 -#define IRQ_U300_PCM_I2S0_FRAME 9 -#define IRQ_U300_PCM_I2S0_FIFO 10 -#define IRQ_U300_PCM_I2S1_FRAME 11 -#define IRQ_U300_PCM_I2S1_FIFO 12 -#define IRQ_U300_XGAM_GAMCON 13 -#define IRQ_U300_XGAM_CDI 14 -#define IRQ_U300_XGAM_CDICON 15 +#define IRQ_U300_IRQ0_EXT 1 +#define IRQ_U300_IRQ1_EXT 2 +#define IRQ_U300_DMA 3 +#define IRQ_U300_VIDEO_ENC_0 4 +#define IRQ_U300_VIDEO_ENC_1 5 +#define IRQ_U300_AAIF_RX 6 +#define IRQ_U300_AAIF_TX 7 +#define IRQ_U300_AAIF_VGPIO 8 +#define IRQ_U300_AAIF_WAKEUP 9 +#define IRQ_U300_PCM_I2S0_FRAME 10 +#define IRQ_U300_PCM_I2S0_FIFO 11 +#define IRQ_U300_PCM_I2S1_FRAME 12 +#define IRQ_U300_PCM_I2S1_FIFO 13 +#define IRQ_U300_XGAM_GAMCON 14 +#define IRQ_U300_XGAM_CDI 15 +#define IRQ_U300_XGAM_CDICON 16 #if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) /* MMIACC not used on the DB3210 or DB3350 chips */ -#define IRQ_U300_XGAM_MMIACC 16 +#define IRQ_U300_XGAM_MMIACC 17 #endif -#define IRQ_U300_XGAM_PDI 17 -#define IRQ_U300_XGAM_PDICON 18 -#define IRQ_U300_XGAM_GAMEACC 19 -#define IRQ_U300_XGAM_MCIDCT 20 -#define IRQ_U300_APEX 21 -#define IRQ_U300_UART0 22 -#define IRQ_U300_SPI 23 -#define IRQ_U300_TIMER_APP_OS 24 -#define IRQ_U300_TIMER_APP_DD 25 -#define IRQ_U300_TIMER_APP_GP1 26 -#define IRQ_U300_TIMER_APP_GP2 27 -#define IRQ_U300_TIMER_OS 28 -#define IRQ_U300_TIMER_MS 29 -#define IRQ_U300_KEYPAD_KEYBF 30 -#define IRQ_U300_KEYPAD_KEYBR 31 +#define IRQ_U300_XGAM_PDI 18 +#define IRQ_U300_XGAM_PDICON 19 +#define IRQ_U300_XGAM_GAMEACC 20 +#define IRQ_U300_XGAM_MCIDCT 21 +#define IRQ_U300_APEX 22 +#define IRQ_U300_UART0 23 +#define IRQ_U300_SPI 24 +#define IRQ_U300_TIMER_APP_OS 25 +#define IRQ_U300_TIMER_APP_DD 26 +#define IRQ_U300_TIMER_APP_GP1 27 +#define IRQ_U300_TIMER_APP_GP2 28 +#define IRQ_U300_TIMER_OS 29 +#define IRQ_U300_TIMER_MS 30 +#define IRQ_U300_KEYPAD_KEYBF 31 +#define IRQ_U300_KEYPAD_KEYBR 32 /* These are on INTCON1 - 32 lines */ -#define IRQ_U300_GPIO_PORT0 32 -#define IRQ_U300_GPIO_PORT1 33 -#define IRQ_U300_GPIO_PORT2 34 +#define IRQ_U300_GPIO_PORT0 33 +#define IRQ_U300_GPIO_PORT1 34 +#define IRQ_U300_GPIO_PORT2 35 #if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) || \ defined(CONFIG_MACH_U300_BS335) /* These are for DB3150, DB3200 and DB3350 */ -#define IRQ_U300_WDOG 35 -#define IRQ_U300_EVHIST 36 -#define IRQ_U300_MSPRO 37 -#define IRQ_U300_MMCSD_MCIINTR0 38 -#define IRQ_U300_MMCSD_MCIINTR1 39 -#define IRQ_U300_I2C0 40 -#define IRQ_U300_I2C1 41 -#define IRQ_U300_RTC 42 -#define IRQ_U300_NFIF 43 -#define IRQ_U300_NFIF2 44 +#define IRQ_U300_WDOG 36 +#define IRQ_U300_EVHIST 37 +#define IRQ_U300_MSPRO 38 +#define IRQ_U300_MMCSD_MCIINTR0 39 +#define IRQ_U300_MMCSD_MCIINTR1 40 +#define IRQ_U300_I2C0 41 +#define IRQ_U300_I2C1 42 +#define IRQ_U300_RTC 43 +#define IRQ_U300_NFIF 44 +#define IRQ_U300_NFIF2 45 #endif /* DB3150 and DB3200 have only 45 IRQs */ #if defined(CONFIG_MACH_U300_BS2X) || defined(CONFIG_MACH_U300_BS330) -#define U300_VIC_IRQS_END 45 +#define U300_VIC_IRQS_END 46 #endif /* The DB3350-specific interrupt lines */ #ifdef CONFIG_MACH_U300_BS335 -#define IRQ_U300_ISP_F0 45 -#define IRQ_U300_ISP_F1 46 -#define IRQ_U300_ISP_F2 47 -#define IRQ_U300_ISP_F3 48 -#define IRQ_U300_ISP_F4 49 -#define IRQ_U300_GPIO_PORT3 50 -#define IRQ_U300_SYSCON_PLL_LOCK 51 -#define IRQ_U300_UART1 52 -#define IRQ_U300_GPIO_PORT4 53 -#define IRQ_U300_GPIO_PORT5 54 -#define IRQ_U300_GPIO_PORT6 55 -#define U300_VIC_IRQS_END 56 +#define IRQ_U300_ISP_F0 46 +#define IRQ_U300_ISP_F1 47 +#define IRQ_U300_ISP_F2 48 +#define IRQ_U300_ISP_F3 49 +#define IRQ_U300_ISP_F4 50 +#define IRQ_U300_GPIO_PORT3 51 +#define IRQ_U300_SYSCON_PLL_LOCK 52 +#define IRQ_U300_UART1 53 +#define IRQ_U300_GPIO_PORT4 54 +#define IRQ_U300_GPIO_PORT5 55 +#define IRQ_U300_GPIO_PORT6 56 +#define U300_VIC_IRQS_END 57 #endif /* The DB3210-specific interrupt lines */ #ifdef CONFIG_MACH_U300_BS365 -#define IRQ_U300_GPIO_PORT3 35 -#define IRQ_U300_GPIO_PORT4 36 -#define IRQ_U300_WDOG 37 -#define IRQ_U300_EVHIST 38 -#define IRQ_U300_MSPRO 39 -#define IRQ_U300_MMCSD_MCIINTR0 40 -#define IRQ_U300_MMCSD_MCIINTR1 41 -#define IRQ_U300_I2C0 42 -#define IRQ_U300_I2C1 43 -#define IRQ_U300_RTC 44 -#define IRQ_U300_NFIF 45 -#define IRQ_U300_NFIF2 46 -#define IRQ_U300_SYSCON_PLL_LOCK 47 -#define U300_VIC_IRQS_END 48 +#define IRQ_U300_GPIO_PORT3 36 +#define IRQ_U300_GPIO_PORT4 37 +#define IRQ_U300_WDOG 38 +#define IRQ_U300_EVHIST 39 +#define IRQ_U300_MSPRO 40 +#define IRQ_U300_MMCSD_MCIINTR0 41 +#define IRQ_U300_MMCSD_MCIINTR1 42 +#define IRQ_U300_I2C0 43 +#define IRQ_U300_I2C1 44 +#define IRQ_U300_RTC 45 +#define IRQ_U300_NFIF 46 +#define IRQ_U300_NFIF2 47 +#define IRQ_U300_SYSCON_PLL_LOCK 48 +#define U300_VIC_IRQS_END 49 #endif /* Maximum 8*7 GPIO lines */ @@ -117,6 +117,6 @@ #define IRQ_U300_GPIO_END (U300_VIC_IRQS_END) #endif -#define NR_IRQS (IRQ_U300_GPIO_END) +#define NR_IRQS (IRQ_U300_GPIO_END - IRQ_U300_INTCON0_START) #endif -- cgit v1.1 From 5ac57550f279c3d991ef0b398681bcaca18169f7 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Fri, 20 Apr 2012 10:01:46 +0200 Subject: ALSA: HDA: Add external mic quirk for Asus Zenbook UX31E According to the reporter, external mic starts to work if the laptop-dmic model is used. According to BIOS pin config, all pins are consistent with the alc269vb_laptop_dmic fixup, except for the external mic, which is not present. Cc: stable@kernel.org BugLink: https://bugs.launchpad.net/bugs/950490 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index e65e354..818f90b 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -6109,6 +6109,7 @@ static const struct alc_fixup alc269_fixups[] = { static const struct snd_pci_quirk alc269_fixup_tbl[] = { SND_PCI_QUIRK(0x103c, 0x1586, "HP", ALC269_FIXUP_MIC2_MUTE_LED), + SND_PCI_QUIRK(0x1043, 0x1427, "Asus Zenbook UX31E", ALC269VB_FIXUP_DMIC), SND_PCI_QUIRK(0x1043, 0x1a13, "Asus G73Jw", ALC269_FIXUP_ASUS_G73JW), SND_PCI_QUIRK(0x1043, 0x16e3, "ASUS UX50", ALC269_FIXUP_STEREO_DMIC), SND_PCI_QUIRK(0x1043, 0x831a, "ASUS P901", ALC269_FIXUP_STEREO_DMIC), -- cgit v1.1 From 60f2951e3ad9b833bc12e2ea7652be2611771792 Mon Sep 17 00:00:00 2001 From: Vinod Koul Date: Fri, 20 Apr 2012 15:28:07 +0530 Subject: dmaengine: imx-dma: dont complete descriptor for cyclic dma the cookie updates completed the cyclic dma descriptor wrongly. This caused the BUG_ON to be hit as submit is called for completed descriptor Fix this by not marking the cyclic descriptor as complete Tested-by: Javier Martin Signed-off-by: Vinod Koul --- drivers/dma/imx-dma.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/dma/imx-dma.c b/drivers/dma/imx-dma.c index a45b5d2..bb787d8 100644 --- a/drivers/dma/imx-dma.c +++ b/drivers/dma/imx-dma.c @@ -571,11 +571,14 @@ static void imxdma_tasklet(unsigned long data) if (desc->desc.callback) desc->desc.callback(desc->desc.callback_param); - dma_cookie_complete(&desc->desc); - - /* If we are dealing with a cyclic descriptor keep it on ld_active */ + /* If we are dealing with a cyclic descriptor keep it on ld_active + * and dont mark the descripor as complete. + * Only in non-cyclic cases it would be marked as complete + */ if (imxdma_chan_is_doing_cyclic(imxdmac)) goto out; + else + dma_cookie_complete(&desc->desc); /* Free 2D slot if it was an interleaved transfer */ if (imxdmac->enabled_2d) { -- cgit v1.1 From d04525ed0323709711277563a2c76e446a017423 Mon Sep 17 00:00:00 2001 From: Shawn Guo Date: Wed, 11 Apr 2012 13:29:31 +0800 Subject: dma: mxs-dma: enable channel in device_issue_pending call Enable channel in device_issue_pending call, so that the order between cookie assignment and channel enabling can be ensured naturally. It fixes the mxs gpmi-nand breakage which is caused by the incorrect order of cookie assigning and channel enabling. Suggested-by: Russell King Signed-off-by: Shawn Guo Tested-by: Huang Shijie Tested-by Signed-off-by: Vinod Koul --- drivers/dma/mxs-dma.c | 10 +++------- drivers/mmc/host/mxs-mmc.c | 3 +++ drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 1 + 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/dma/mxs-dma.c b/drivers/dma/mxs-dma.c index c81ef7e..655d4ce6 100644 --- a/drivers/dma/mxs-dma.c +++ b/drivers/dma/mxs-dma.c @@ -201,10 +201,6 @@ static struct mxs_dma_chan *to_mxs_dma_chan(struct dma_chan *chan) static dma_cookie_t mxs_dma_tx_submit(struct dma_async_tx_descriptor *tx) { - struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(tx->chan); - - mxs_dma_enable_chan(mxs_chan); - return dma_cookie_assign(tx); } @@ -558,9 +554,9 @@ static enum dma_status mxs_dma_tx_status(struct dma_chan *chan, static void mxs_dma_issue_pending(struct dma_chan *chan) { - /* - * Nothing to do. We only have a single descriptor. - */ + struct mxs_dma_chan *mxs_chan = to_mxs_dma_chan(chan); + + mxs_dma_enable_chan(mxs_chan); } static int __init mxs_dma_init(struct mxs_dma_engine *mxs_dma) diff --git a/drivers/mmc/host/mxs-mmc.c b/drivers/mmc/host/mxs-mmc.c index b0f2ef9..e3f5af9 100644 --- a/drivers/mmc/host/mxs-mmc.c +++ b/drivers/mmc/host/mxs-mmc.c @@ -363,6 +363,7 @@ static void mxs_mmc_bc(struct mxs_mmc_host *host) goto out; dmaengine_submit(desc); + dma_async_issue_pending(host->dmach); return; out: @@ -403,6 +404,7 @@ static void mxs_mmc_ac(struct mxs_mmc_host *host) goto out; dmaengine_submit(desc); + dma_async_issue_pending(host->dmach); return; out: @@ -531,6 +533,7 @@ static void mxs_mmc_adtc(struct mxs_mmc_host *host) goto out; dmaengine_submit(desc); + dma_async_issue_pending(host->dmach); return; out: dev_warn(mmc_dev(host->mmc), diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 75b1dde..9ec51ce 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -266,6 +266,7 @@ int start_dma_without_bch_irq(struct gpmi_nand_data *this, desc->callback = dma_irq_callback; desc->callback_param = this; dmaengine_submit(desc); + dma_async_issue_pending(get_dma_chan(this)); /* Wait for the interrupt from the DMA block. */ err = wait_for_completion_timeout(dma_c, msecs_to_jiffies(1000)); -- cgit v1.1 From ed8b0d67f33518a16c6b2450fe5ebebf180c2d04 Mon Sep 17 00:00:00 2001 From: Nicolas Ferre Date: Mon, 16 Apr 2012 14:46:30 +0200 Subject: dmaengine: at_hdmac: remove clear-on-read in atc_dostart() This loop on EBCISR register was designed to clear IRQ sources before enabling a DMA channel. This register is clear-on-read so a race condition can appear if another channel is already active and has just finished its transfer. Removing this read on EBCISR is fixing the issue as there is no case where an IRQ could be pending: we already make sure that this register is drained at probe() time and during resume. Signed-off-by: Nicolas Ferre Cc: stable Signed-off-by: Vinod Koul --- drivers/dma/at_hdmac.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c index 7aa58d2..445fdf8 100644 --- a/drivers/dma/at_hdmac.c +++ b/drivers/dma/at_hdmac.c @@ -221,10 +221,6 @@ static void atc_dostart(struct at_dma_chan *atchan, struct at_desc *first) vdbg_dump_regs(atchan); - /* clear any pending interrupt */ - while (dma_readl(atdma, EBCISR)) - cpu_relax(); - channel_writel(atchan, SADDR, 0); channel_writel(atchan, DADDR, 0); channel_writel(atchan, CTRLA, 0); -- cgit v1.1 From 2d5733fcd33dd451022d197cb6b476e970519ca7 Mon Sep 17 00:00:00 2001 From: Yuri Matylitski Date: Fri, 20 Apr 2012 12:38:32 +0300 Subject: USB: serial: cp210x: Fixed usb_control_msg timeout values Fixed too small hardcoded timeout values for usb_control_msg in driver for SiliconLabs cp210x-based usb-to-serial adapters. Replaced with USB_CTRL_GET_TIMEOUT/USB_CTRL_SET_TIMEOUT. Signed-off-by: Yuri Matylitski Acked-by: Kirill A. Shutemov Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c index 0310e2d..ec30f95 100644 --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -287,7 +287,8 @@ static int cp210x_get_config(struct usb_serial_port *port, u8 request, /* Issue the request, attempting to read 'size' bytes */ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), request, REQTYPE_DEVICE_TO_HOST, 0x0000, - port_priv->bInterfaceNumber, buf, size, 300); + port_priv->bInterfaceNumber, buf, size, + USB_CTRL_GET_TIMEOUT); /* Convert data into an array of integers */ for (i = 0; i < length; i++) @@ -340,12 +341,14 @@ static int cp210x_set_config(struct usb_serial_port *port, u8 request, result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), request, REQTYPE_HOST_TO_DEVICE, 0x0000, - port_priv->bInterfaceNumber, buf, size, 300); + port_priv->bInterfaceNumber, buf, size, + USB_CTRL_SET_TIMEOUT); } else { result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), request, REQTYPE_HOST_TO_DEVICE, data[0], - port_priv->bInterfaceNumber, NULL, 0, 300); + port_priv->bInterfaceNumber, NULL, 0, + USB_CTRL_SET_TIMEOUT); } kfree(buf); -- cgit v1.1 From 3d81acb1cdb242378a1acb3eb1bc28c6bb5895f1 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Fri, 20 Apr 2012 11:50:30 -0400 Subject: Revert "xen/p2m: m2p_find_override: use list_for_each_entry_safe" This reverts commit b960d6c43a63ebd2d8518b328da3816b833ee8cc. If we have another thread (very likely) touched the list, we end up hitting a problem "that the next element is wrong because we should be able to cope with that. The problem is that the next->next pointer would be set LIST_POISON1. " (Stefano's comment on the patch). Reverting for now. Suggested-by: Dan Carpenter Acked-by: Stefano Stabellini Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/p2m.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 7ed8cc3..1b267e7 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -809,17 +809,21 @@ struct page *m2p_find_override(unsigned long mfn) { unsigned long flags; struct list_head *bucket = &m2p_overrides[mfn_hash(mfn)]; - struct page *p, *t, *ret; + struct page *p, *ret; ret = NULL; - list_for_each_entry_safe(p, t, bucket, lru) { + spin_lock_irqsave(&m2p_override_lock, flags); + + list_for_each_entry(p, bucket, lru) { if (page_private(p) == mfn) { ret = p; break; } } + spin_unlock_irqrestore(&m2p_override_lock, flags); + return ret; } -- cgit v1.1 From 33ff581eddf744ea91a50d46c2f0961b375a9595 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 18 Apr 2012 15:46:58 +0200 Subject: perf symbols: Read plt symbols from proper symtab_type binary When loading symbols from DSO we check multiple paths of DSO binary until we succeed to load symbols ('.symtab' section). Once symbols are read we try to load also plt symbols. During the reading of plt symbols, the dso file is reopened from location given by dso->long_name. This could be wrong in case we want process buildid binaries. The change is to make the plt symbols being read from the DSO path, that normal symbols were read from. Signed-off-by: Jiri Olsa Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1334756818-6631-1-git-send-email-jolsa@redhat.com [ committer note: moved dso to be the first parameter of that function ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index c0a028c..ab9867b 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -977,8 +977,9 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep, * And always look at the original dso, not at debuginfo packages, that * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS). */ -static int dso__synthesize_plt_symbols(struct dso *dso, struct map *map, - symbol_filter_t filter) +static int +dso__synthesize_plt_symbols(struct dso *dso, char *name, struct map *map, + symbol_filter_t filter) { uint32_t nr_rel_entries, idx; GElf_Sym sym; @@ -993,10 +994,7 @@ static int dso__synthesize_plt_symbols(struct dso *dso, struct map *map, char sympltname[1024]; Elf *elf; int nr = 0, symidx, fd, err = 0; - char name[PATH_MAX]; - snprintf(name, sizeof(name), "%s%s", - symbol_conf.symfs, dso->long_name); fd = open(name, O_RDONLY); if (fd < 0) goto out; @@ -1703,8 +1701,9 @@ restart: continue; if (ret > 0) { - int nr_plt = dso__synthesize_plt_symbols(dso, map, - filter); + int nr_plt; + + nr_plt = dso__synthesize_plt_symbols(dso, name, map, filter); if (nr_plt > 0) ret += nr_plt; break; -- cgit v1.1 From b3dc627cabb33fc95f93da78457770c1b2a364d2 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 20 Apr 2012 08:31:34 -0700 Subject: memblock: memblock should be able to handle zero length operations Commit 24aa07882b ("memblock, x86: Replace memblock_x86_reserve/ free_range() with generic ones") replaced x86 specific memblock operations with the generic ones; unfortunately, it lost zero length operation handling in the process making the kernel panic if somebody tries to reserve zero length area. There isn't much to be gained by being cranky to zero length operations and panicking is almost the worst response. Drop the BUG_ON() in memblock_reserve() and update memblock_add_region/isolate_range() so that all zero length operations are handled as noops. Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org Reported-by: Valere Monseur Bisected-by: Joseph Freeman Tested-by: Joseph Freeman Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43098 Signed-off-by: Linus Torvalds --- mm/memblock.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/memblock.c b/mm/memblock.c index 99f2855..a44eab3 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -330,6 +330,9 @@ static int __init_memblock memblock_add_region(struct memblock_type *type, phys_addr_t end = base + memblock_cap_size(base, &size); int i, nr_new; + if (!size) + return 0; + /* special case for empty array */ if (type->regions[0].size == 0) { WARN_ON(type->cnt != 1 || type->total_size); @@ -430,6 +433,9 @@ static int __init_memblock memblock_isolate_range(struct memblock_type *type, *start_rgn = *end_rgn = 0; + if (!size) + return 0; + /* we'll create at most two more regions */ while (type->cnt + 2 > type->max) if (memblock_double_array(type) < 0) @@ -514,7 +520,6 @@ int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size) (unsigned long long)base, (unsigned long long)base + size, (void *)_RET_IP_); - BUG_ON(0 == size); return memblock_add_region(_rgn, base, size, MAX_NUMNODES); } -- cgit v1.1 From 19244ad06b70ed84931df868583547ce1cd3a186 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 20 Apr 2012 11:19:35 -0700 Subject: Revert "ACPI: ignore FADT reset-reg-sup flag" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit cf450136bfde77c7f95065c91bffded4aa7fa731. It breaks reboot on at least one Thinkpad T43, as reported by Jörg Otte: "On reboot it shuts down as normal. The last lines displayed are: >Unmounting temporary filesystems.. [OK] >Deactivating swap... [OK] >Unmounting local filesystems... [OK] >Will now restart > Restarting system Then I hear it accessing the cd-drive, but then it's being stuck." Jörg bisected the regression to this commit. That commit fixes another machine (see https://bugzilla.kernel.org/show_bug.cgi?id=11533 for details) that has a BIOS bug and doesn't support ACPI reset. However, at least one of those other reporters no longer even has the machine in question, and had a different workaround to begin with. Besides, it clearly was a buggy BIOS. Let's not break the correct case to fix that case. Reported-and-bisected-by: Jörg Otte Cc: linux-acpi@vger.kernel.org Cc: Len Brown Cc: Peter Anvin Signed-off-by: Linus Torvalds --- drivers/acpi/acpica/hwxface.c | 3 ++- drivers/acpi/reboot.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index ab513a9..a716fed 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -74,7 +74,8 @@ acpi_status acpi_reset(void) /* Check if the reset register is supported */ - if (!reset_reg->address) { + if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER) || + !reset_reg->address) { return_ACPI_STATUS(AE_NOT_EXIST); } diff --git a/drivers/acpi/reboot.c b/drivers/acpi/reboot.c index c1d6124..a6c77e8b 100644 --- a/drivers/acpi/reboot.c +++ b/drivers/acpi/reboot.c @@ -23,7 +23,8 @@ void acpi_reboot(void) /* Is the reset register supported? The spec says we should be * checking the bit width and bit offset, but Windows ignores * these fields */ - /* Ignore also acpi_gbl_FADT.flags.ACPI_FADT_RESET_REGISTER */ + if (!(acpi_gbl_FADT.flags & ACPI_FADT_RESET_REGISTER)) + return; reset_value = acpi_gbl_FADT.reset_value; -- cgit v1.1 From 73fb7bc7c57d971b11f2e00536ac2d3e316e0609 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Fri, 20 Apr 2012 14:47:34 -0400 Subject: NFS: put open context on error in nfs_pagein_multi Cc: Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/read.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/read.c b/fs/nfs/read.c index 9a0e8ef4..0a4be28 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -322,7 +322,7 @@ out_bad: while (!list_empty(res)) { data = list_entry(res->next, struct nfs_read_data, list); list_del(&data->list); - nfs_readdata_free(data); + nfs_readdata_release(data); } nfs_readpage_release(req); return -ENOMEM; -- cgit v1.1 From 8ccd271f7a3a846ce6f85ead0760d9d12994a611 Mon Sep 17 00:00:00 2001 From: Fred Isaman Date: Fri, 20 Apr 2012 14:47:35 -0400 Subject: NFS: put open context on error in nfs_flush_multi Cc: Signed-off-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/write.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 9b8d4d4..c074623 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -1019,7 +1019,7 @@ out_bad: while (!list_empty(res)) { data = list_entry(res->next, struct nfs_write_data, list); list_del(&data->list); - nfs_writedata_free(data); + nfs_writedata_release(data); } nfs_redirty_request(req); return -ENOMEM; -- cgit v1.1 From 98a2139f4f4d7b5fcc3a54c7fddbe88612abed20 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Sat, 3 Sep 2011 01:09:43 +0200 Subject: nfs: Enclose hostname in brackets when needed in nfs_do_root_mount When hostname contains colon (e.g. when it is an IPv6 address) it needs to be enclosed in brackets to make parsing of NFS device string possible. Fix nfs_do_root_mount() to enclose hostname properly when needed. NFS code actually does not need this as it does not parse the string passed by nfs_do_root_mount() but the device string is exposed to userspace in /proc/mounts. CC: Josh Boyer CC: Trond Myklebust Signed-off-by: Jan Kara Cc: stable@vger.kernel.org Signed-off-by: Trond Myklebust --- fs/nfs/super.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 37412f7..1e6715f 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2767,11 +2767,15 @@ static struct vfsmount *nfs_do_root_mount(struct file_system_type *fs_type, char *root_devname; size_t len; - len = strlen(hostname) + 3; + len = strlen(hostname) + 5; root_devname = kmalloc(len, GFP_KERNEL); if (root_devname == NULL) return ERR_PTR(-ENOMEM); - snprintf(root_devname, len, "%s:/", hostname); + /* Does hostname needs to be enclosed in brackets? */ + if (strchr(hostname, ':')) + snprintf(root_devname, len, "[%s]:/", hostname); + else + snprintf(root_devname, len, "%s:/", hostname); root_mnt = vfs_kern_mount(fs_type, flags, root_devname, data); kfree(root_devname); return root_mnt; -- cgit v1.1 From 8482c81c770960d7c0dc991a781cbd4afa7ea4cc Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Sat, 14 Apr 2012 08:04:46 -0700 Subject: ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers With the addition of platform specific driver data in the sdhci driver for EXYNOS4 and EXYNOS5, the device name of sdhci controllers on EXYNOS4 and EXYNOS5 are changed accordingly. Signed-off-by: Thomas Abraham [kgene.kim@samsung.com: re-worked on top of v3.4-rc2] Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/clock-exynos4.c | 24 ++++++++++++------------ arch/arm/mach-exynos/clock-exynos5.c | 24 ++++++++++++------------ arch/arm/mach-exynos/common.c | 10 ++++++++++ arch/arm/plat-samsung/include/plat/sdhci.h | 28 ++++++++++++++++++++++++++++ 4 files changed, 62 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-exynos/clock-exynos4.c b/arch/arm/mach-exynos/clock-exynos4.c index df54c2a..6efd1e5 100644 --- a/arch/arm/mach-exynos/clock-exynos4.c +++ b/arch/arm/mach-exynos/clock-exynos4.c @@ -497,25 +497,25 @@ static struct clk exynos4_init_clocks_off[] = { .ctrlbit = (1 << 3), }, { .name = "hsmmc", - .devname = "s3c-sdhci.0", + .devname = "exynos4-sdhci.0", .parent = &exynos4_clk_aclk_133.clk, .enable = exynos4_clk_ip_fsys_ctrl, .ctrlbit = (1 << 5), }, { .name = "hsmmc", - .devname = "s3c-sdhci.1", + .devname = "exynos4-sdhci.1", .parent = &exynos4_clk_aclk_133.clk, .enable = exynos4_clk_ip_fsys_ctrl, .ctrlbit = (1 << 6), }, { .name = "hsmmc", - .devname = "s3c-sdhci.2", + .devname = "exynos4-sdhci.2", .parent = &exynos4_clk_aclk_133.clk, .enable = exynos4_clk_ip_fsys_ctrl, .ctrlbit = (1 << 7), }, { .name = "hsmmc", - .devname = "s3c-sdhci.3", + .devname = "exynos4-sdhci.3", .parent = &exynos4_clk_aclk_133.clk, .enable = exynos4_clk_ip_fsys_ctrl, .ctrlbit = (1 << 8), @@ -1202,7 +1202,7 @@ static struct clksrc_clk exynos4_clk_sclk_uart3 = { static struct clksrc_clk exynos4_clk_sclk_mmc0 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.0", + .devname = "exynos4-sdhci.0", .parent = &exynos4_clk_dout_mmc0.clk, .enable = exynos4_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 0), @@ -1213,7 +1213,7 @@ static struct clksrc_clk exynos4_clk_sclk_mmc0 = { static struct clksrc_clk exynos4_clk_sclk_mmc1 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.1", + .devname = "exynos4-sdhci.1", .parent = &exynos4_clk_dout_mmc1.clk, .enable = exynos4_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 4), @@ -1224,7 +1224,7 @@ static struct clksrc_clk exynos4_clk_sclk_mmc1 = { static struct clksrc_clk exynos4_clk_sclk_mmc2 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.2", + .devname = "exynos4-sdhci.2", .parent = &exynos4_clk_dout_mmc2.clk, .enable = exynos4_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 8), @@ -1235,7 +1235,7 @@ static struct clksrc_clk exynos4_clk_sclk_mmc2 = { static struct clksrc_clk exynos4_clk_sclk_mmc3 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.3", + .devname = "exynos4-sdhci.3", .parent = &exynos4_clk_dout_mmc3.clk, .enable = exynos4_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 12), @@ -1340,10 +1340,10 @@ static struct clk_lookup exynos4_clk_lookup[] = { CLKDEV_INIT("exynos4210-uart.1", "clk_uart_baud0", &exynos4_clk_sclk_uart1.clk), CLKDEV_INIT("exynos4210-uart.2", "clk_uart_baud0", &exynos4_clk_sclk_uart2.clk), CLKDEV_INIT("exynos4210-uart.3", "clk_uart_baud0", &exynos4_clk_sclk_uart3.clk), - CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &exynos4_clk_sclk_mmc0.clk), - CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &exynos4_clk_sclk_mmc1.clk), - CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.2", &exynos4_clk_sclk_mmc2.clk), - CLKDEV_INIT("s3c-sdhci.3", "mmc_busclk.2", &exynos4_clk_sclk_mmc3.clk), + CLKDEV_INIT("exynos4-sdhci.0", "mmc_busclk.2", &exynos4_clk_sclk_mmc0.clk), + CLKDEV_INIT("exynos4-sdhci.1", "mmc_busclk.2", &exynos4_clk_sclk_mmc1.clk), + CLKDEV_INIT("exynos4-sdhci.2", "mmc_busclk.2", &exynos4_clk_sclk_mmc2.clk), + CLKDEV_INIT("exynos4-sdhci.3", "mmc_busclk.2", &exynos4_clk_sclk_mmc3.clk), CLKDEV_INIT("exynos4-fb.0", "lcd", &exynos4_clk_fimd0), CLKDEV_INIT("dma-pl330.0", "apb_pclk", &exynos4_clk_pdma0), CLKDEV_INIT("dma-pl330.1", "apb_pclk", &exynos4_clk_pdma1), diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c index d013982..5cd7a8b 100644 --- a/arch/arm/mach-exynos/clock-exynos5.c +++ b/arch/arm/mach-exynos/clock-exynos5.c @@ -455,25 +455,25 @@ static struct clk exynos5_init_clocks_off[] = { .ctrlbit = (1 << 20), }, { .name = "hsmmc", - .devname = "s3c-sdhci.0", + .devname = "exynos4-sdhci.0", .parent = &exynos5_clk_aclk_200.clk, .enable = exynos5_clk_ip_fsys_ctrl, .ctrlbit = (1 << 12), }, { .name = "hsmmc", - .devname = "s3c-sdhci.1", + .devname = "exynos4-sdhci.1", .parent = &exynos5_clk_aclk_200.clk, .enable = exynos5_clk_ip_fsys_ctrl, .ctrlbit = (1 << 13), }, { .name = "hsmmc", - .devname = "s3c-sdhci.2", + .devname = "exynos4-sdhci.2", .parent = &exynos5_clk_aclk_200.clk, .enable = exynos5_clk_ip_fsys_ctrl, .ctrlbit = (1 << 14), }, { .name = "hsmmc", - .devname = "s3c-sdhci.3", + .devname = "exynos4-sdhci.3", .parent = &exynos5_clk_aclk_200.clk, .enable = exynos5_clk_ip_fsys_ctrl, .ctrlbit = (1 << 15), @@ -813,7 +813,7 @@ static struct clksrc_clk exynos5_clk_sclk_uart3 = { static struct clksrc_clk exynos5_clk_sclk_mmc0 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.0", + .devname = "exynos4-sdhci.0", .parent = &exynos5_clk_dout_mmc0.clk, .enable = exynos5_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 0), @@ -824,7 +824,7 @@ static struct clksrc_clk exynos5_clk_sclk_mmc0 = { static struct clksrc_clk exynos5_clk_sclk_mmc1 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.1", + .devname = "exynos4-sdhci.1", .parent = &exynos5_clk_dout_mmc1.clk, .enable = exynos5_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 4), @@ -835,7 +835,7 @@ static struct clksrc_clk exynos5_clk_sclk_mmc1 = { static struct clksrc_clk exynos5_clk_sclk_mmc2 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.2", + .devname = "exynos4-sdhci.2", .parent = &exynos5_clk_dout_mmc2.clk, .enable = exynos5_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 8), @@ -846,7 +846,7 @@ static struct clksrc_clk exynos5_clk_sclk_mmc2 = { static struct clksrc_clk exynos5_clk_sclk_mmc3 = { .clk = { .name = "sclk_mmc", - .devname = "s3c-sdhci.3", + .devname = "exynos4-sdhci.3", .parent = &exynos5_clk_dout_mmc3.clk, .enable = exynos5_clksrc_mask_fsys_ctrl, .ctrlbit = (1 << 12), @@ -990,10 +990,10 @@ static struct clk_lookup exynos5_clk_lookup[] = { CLKDEV_INIT("exynos4210-uart.1", "clk_uart_baud0", &exynos5_clk_sclk_uart1.clk), CLKDEV_INIT("exynos4210-uart.2", "clk_uart_baud0", &exynos5_clk_sclk_uart2.clk), CLKDEV_INIT("exynos4210-uart.3", "clk_uart_baud0", &exynos5_clk_sclk_uart3.clk), - CLKDEV_INIT("s3c-sdhci.0", "mmc_busclk.2", &exynos5_clk_sclk_mmc0.clk), - CLKDEV_INIT("s3c-sdhci.1", "mmc_busclk.2", &exynos5_clk_sclk_mmc1.clk), - CLKDEV_INIT("s3c-sdhci.2", "mmc_busclk.2", &exynos5_clk_sclk_mmc2.clk), - CLKDEV_INIT("s3c-sdhci.3", "mmc_busclk.2", &exynos5_clk_sclk_mmc3.clk), + CLKDEV_INIT("exynos4-sdhci.0", "mmc_busclk.2", &exynos5_clk_sclk_mmc0.clk), + CLKDEV_INIT("exynos4-sdhci.1", "mmc_busclk.2", &exynos5_clk_sclk_mmc1.clk), + CLKDEV_INIT("exynos4-sdhci.2", "mmc_busclk.2", &exynos5_clk_sclk_mmc2.clk), + CLKDEV_INIT("exynos4-sdhci.3", "mmc_busclk.2", &exynos5_clk_sclk_mmc3.clk), CLKDEV_INIT("dma-pl330.0", "apb_pclk", &exynos5_clk_pdma0), CLKDEV_INIT("dma-pl330.1", "apb_pclk", &exynos5_clk_pdma1), CLKDEV_INIT("dma-pl330.2", "apb_pclk", &exynos5_clk_mdma1), diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 8614aab..b5e7f00 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -326,6 +326,11 @@ static void __init exynos4_map_io(void) s3c_fimc_setname(2, "exynos4-fimc"); s3c_fimc_setname(3, "exynos4-fimc"); + s3c_sdhci_setname(0, "exynos4-sdhci"); + s3c_sdhci_setname(1, "exynos4-sdhci"); + s3c_sdhci_setname(2, "exynos4-sdhci"); + s3c_sdhci_setname(3, "exynos4-sdhci"); + /* The I2C bus controllers are directly compatible with s3c2440 */ s3c_i2c0_setname("s3c2440-i2c"); s3c_i2c1_setname("s3c2440-i2c"); @@ -344,6 +349,11 @@ static void __init exynos5_map_io(void) s3c_device_i2c0.resource[1].start = EXYNOS5_IRQ_IIC; s3c_device_i2c0.resource[1].end = EXYNOS5_IRQ_IIC; + s3c_sdhci_setname(0, "exynos4-sdhci"); + s3c_sdhci_setname(1, "exynos4-sdhci"); + s3c_sdhci_setname(2, "exynos4-sdhci"); + s3c_sdhci_setname(3, "exynos4-sdhci"); + /* The I2C bus controllers are directly compatible with s3c2440 */ s3c_i2c0_setname("s3c2440-i2c"); s3c_i2c1_setname("s3c2440-i2c"); diff --git a/arch/arm/plat-samsung/include/plat/sdhci.h b/arch/arm/plat-samsung/include/plat/sdhci.h index 317e246..e834c5e 100644 --- a/arch/arm/plat-samsung/include/plat/sdhci.h +++ b/arch/arm/plat-samsung/include/plat/sdhci.h @@ -18,6 +18,8 @@ #ifndef __PLAT_S3C_SDHCI_H #define __PLAT_S3C_SDHCI_H __FILE__ +#include + struct platform_device; struct mmc_host; struct mmc_card; @@ -356,4 +358,30 @@ static inline void exynos4_default_sdhci3(void) { } #endif /* CONFIG_EXYNOS4_SETUP_SDHCI */ +static inline void s3c_sdhci_setname(int id, char *name) +{ + switch (id) { +#ifdef CONFIG_S3C_DEV_HSMMC + case 0: + s3c_device_hsmmc0.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC1 + case 1: + s3c_device_hsmmc1.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC2 + case 2: + s3c_device_hsmmc2.name = name; + break; +#endif +#ifdef CONFIG_S3C_DEV_HSMMC3 + case 3: + s3c_device_hsmmc3.name = name; + break; +#endif + } +} + #endif /* __PLAT_S3C_SDHCI_H */ -- cgit v1.1 From e4eb1ff61b323d6141614e5458a1f53c7046ff8e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 20 Apr 2012 15:35:40 -0700 Subject: VM: add "vm_brk()" helper function It does the same thing as "do_brk()", except it handles the VM locking too. It turns out that all external callers want that anyway, so we can make do_brk() static to just mm/mmap.c while at it. Signed-off-by: Linus Torvalds --- arch/x86/ia32/ia32_aout.c | 20 +++++--------------- fs/binfmt_aout.c | 20 +++++--------------- fs/binfmt_elf.c | 15 ++++----------- include/linux/mm.h | 3 ++- mm/mmap.c | 16 ++++++++++++++-- mm/nommu.c | 2 +- 6 files changed, 31 insertions(+), 45 deletions(-) diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index d511d95..b6817ee 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -119,9 +119,7 @@ static void set_brk(unsigned long start, unsigned long end) end = PAGE_ALIGN(end); if (end <= start) return; - down_write(¤t->mm->mmap_sem); - do_brk(start, end - start); - up_write(¤t->mm->mmap_sem); + vm_brk(start, end - start); } #ifdef CORE_DUMP @@ -332,9 +330,7 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) pos = 32; map_size = ex.a_text+ex.a_data; - down_write(¤t->mm->mmap_sem); - error = do_brk(text_addr & PAGE_MASK, map_size); - up_write(¤t->mm->mmap_sem); + error = vm_brk(text_addr & PAGE_MASK, map_size); if (error != (text_addr & PAGE_MASK)) { send_sig(SIGKILL, current, 0); @@ -373,9 +369,7 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) if (!bprm->file->f_op->mmap || (fd_offset & ~PAGE_MASK) != 0) { loff_t pos = fd_offset; - down_write(¤t->mm->mmap_sem); - do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); - up_write(¤t->mm->mmap_sem); + vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); bprm->file->f_op->read(bprm->file, (char __user *)N_TXTADDR(ex), ex.a_text+ex.a_data, &pos); @@ -476,9 +470,7 @@ static int load_aout_library(struct file *file) error_time = jiffies; } #endif - down_write(¤t->mm->mmap_sem); - do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); - up_write(¤t->mm->mmap_sem); + vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); file->f_op->read(file, (char __user *)start_addr, ex.a_text + ex.a_data, &pos); @@ -503,9 +495,7 @@ static int load_aout_library(struct file *file) len = PAGE_ALIGN(ex.a_text + ex.a_data); bss = ex.a_text + ex.a_data + ex.a_bss; if (bss > len) { - down_write(¤t->mm->mmap_sem); - error = do_brk(start_addr + len, bss - len); - up_write(¤t->mm->mmap_sem); + error = vm_brk(start_addr + len, bss - len); retval = error; if (error != start_addr + len) goto out; diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index 2eb12f1..8852749 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -50,9 +50,7 @@ static int set_brk(unsigned long start, unsigned long end) end = PAGE_ALIGN(end); if (end > start) { unsigned long addr; - down_write(¤t->mm->mmap_sem); - addr = do_brk(start, end - start); - up_write(¤t->mm->mmap_sem); + addr = vm_brk(start, end - start); if (BAD_ADDR(addr)) return addr; } @@ -280,9 +278,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) pos = 32; map_size = ex.a_text+ex.a_data; #endif - down_write(¤t->mm->mmap_sem); - error = do_brk(text_addr & PAGE_MASK, map_size); - up_write(¤t->mm->mmap_sem); + error = vm_brk(text_addr & PAGE_MASK, map_size); if (error != (text_addr & PAGE_MASK)) { send_sig(SIGKILL, current, 0); return error; @@ -313,9 +309,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) { loff_t pos = fd_offset; - down_write(¤t->mm->mmap_sem); - do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); - up_write(¤t->mm->mmap_sem); + vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data); bprm->file->f_op->read(bprm->file, (char __user *)N_TXTADDR(ex), ex.a_text+ex.a_data, &pos); @@ -412,9 +406,7 @@ static int load_aout_library(struct file *file) "N_TXTOFF is not page aligned. Please convert library: %s\n", file->f_path.dentry->d_name.name); } - down_write(¤t->mm->mmap_sem); - do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); - up_write(¤t->mm->mmap_sem); + vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss); file->f_op->read(file, (char __user *)start_addr, ex.a_text + ex.a_data, &pos); @@ -438,9 +430,7 @@ static int load_aout_library(struct file *file) len = PAGE_ALIGN(ex.a_text + ex.a_data); bss = ex.a_text + ex.a_data + ex.a_bss; if (bss > len) { - down_write(¤t->mm->mmap_sem); - error = do_brk(start_addr + len, bss - len); - up_write(¤t->mm->mmap_sem); + error = vm_brk(start_addr + len, bss - len); retval = error; if (error != start_addr + len) goto out; diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 48ffb3d..0708a0b 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -82,9 +82,7 @@ static int set_brk(unsigned long start, unsigned long end) end = ELF_PAGEALIGN(end); if (end > start) { unsigned long addr; - down_write(¤t->mm->mmap_sem); - addr = do_brk(start, end - start); - up_write(¤t->mm->mmap_sem); + addr = vm_brk(start, end - start); if (BAD_ADDR(addr)) return addr; } @@ -514,9 +512,7 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex, elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1); /* Map the last of the bss segment */ - down_write(¤t->mm->mmap_sem); - error = do_brk(elf_bss, last_bss - elf_bss); - up_write(¤t->mm->mmap_sem); + error = vm_brk(elf_bss, last_bss - elf_bss); if (BAD_ADDR(error)) goto out_close; } @@ -1072,11 +1068,8 @@ static int load_elf_library(struct file *file) len = ELF_PAGESTART(eppnt->p_filesz + eppnt->p_vaddr + ELF_MIN_ALIGN - 1); bss = eppnt->p_memsz + eppnt->p_vaddr; - if (bss > len) { - down_write(¤t->mm->mmap_sem); - do_brk(len, bss - len); - up_write(¤t->mm->mmap_sem); - } + if (bss > len) + vm_brk(len, bss - len); error = 0; out_free_ph: diff --git a/include/linux/mm.h b/include/linux/mm.h index d8738a4..bfee4ad 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1415,7 +1415,8 @@ out: extern int do_munmap(struct mm_struct *, unsigned long, size_t); -extern unsigned long do_brk(unsigned long, unsigned long); +/* These take the mm semaphore themselves */ +extern unsigned long vm_brk(unsigned long, unsigned long); /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); diff --git a/mm/mmap.c b/mm/mmap.c index a7bf6a3..df51891 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -240,6 +240,8 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma) return next; } +static unsigned long do_brk(unsigned long addr, unsigned long len); + SYSCALL_DEFINE1(brk, unsigned long, brk) { unsigned long rlim, retval; @@ -2136,7 +2138,7 @@ static inline void verify_mm_writelocked(struct mm_struct *mm) * anonymous maps. eventually we may be able to do some * brk-specific accounting here. */ -unsigned long do_brk(unsigned long addr, unsigned long len) +static unsigned long do_brk(unsigned long addr, unsigned long len) { struct mm_struct * mm = current->mm; struct vm_area_struct * vma, * prev; @@ -2232,7 +2234,17 @@ out: return addr; } -EXPORT_SYMBOL(do_brk); +unsigned long vm_brk(unsigned long addr, unsigned long len) +{ + struct mm_struct *mm = current->mm; + unsigned long ret; + + down_write(&mm->mmap_sem); + ret = do_brk(addr, len); + up_write(&mm->mmap_sem); + return ret; +} +EXPORT_SYMBOL(vm_brk); /* Release all mmaps. */ void exit_mmap(struct mm_struct *mm) diff --git a/mm/nommu.c b/mm/nommu.c index f59e170..6341933 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1744,7 +1744,7 @@ void exit_mmap(struct mm_struct *mm) kleave(""); } -unsigned long do_brk(unsigned long addr, unsigned long len) +unsigned long vm_brk(unsigned long addr, unsigned long len) { return -ENOMEM; } -- cgit v1.1 From 7194efb8f063ee3aa0cb50d9002348887e68ec10 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 5 Apr 2012 14:45:47 +0300 Subject: mmc: fixes for eMMC v4.5 discard operation eMMC v4.5 discard operation is significantly different from the existing trim operation because it is not guaranteed to work with the new sanitize operation. Consequently mmc_can_trim() is separated from mmc_can_discard(). Also the new discard operation does not result in the sectors being set to all-zeros, so discard_zeroes_data must not be set. In addition, the new discard has the same timeout as trim, but from v4.5 trim is defined to use the hc timeout. The timeout calculation is adjusted accordingly. Fixes apply to linux 3.2 on. Signed-off-by: Adrian Hunter Cc: Acked-by: Jaehoon Chung Acked-by: Linus Walleij Signed-off-by: Chris Ball --- drivers/mmc/card/queue.c | 2 +- drivers/mmc/core/core.c | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 2517547..996f8e3 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -139,7 +139,7 @@ static void mmc_queue_setup_discard(struct request_queue *q, queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, q); q->limits.max_discard_sectors = max_discard; - if (card->erased_byte == 0) + if (card->erased_byte == 0 && !mmc_can_discard(card)) q->limits.discard_zeroes_data = 1; q->limits.discard_granularity = card->pref_erase << 9; /* granularity must not be greater than max. discard */ diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 7474c47..83db5ef 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1409,7 +1409,10 @@ static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card, { unsigned int erase_timeout; - if (card->ext_csd.erase_group_def & 1) { + if (arg == MMC_DISCARD_ARG || + (arg == MMC_TRIM_ARG && card->ext_csd.rev >= 6)) { + erase_timeout = card->ext_csd.trim_timeout; + } else if (card->ext_csd.erase_group_def & 1) { /* High Capacity Erase Group Size uses HC timeouts */ if (arg == MMC_TRIM_ARG) erase_timeout = card->ext_csd.trim_timeout; @@ -1681,8 +1684,6 @@ int mmc_can_trim(struct mmc_card *card) { if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN) return 1; - if (mmc_can_discard(card)) - return 1; return 0; } EXPORT_SYMBOL(mmc_can_trim); -- cgit v1.1 From 283028122db37621b124f079ca8eae5b64807ad4 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Thu, 5 Apr 2012 14:45:48 +0300 Subject: mmc: fixes for eMMC v4.5 sanitize operation eMMC v4.5 sanitize operation erases all copies of unmapped data. However trim or erase operations must be used first to unmap the required sectors. That was not being done. Fixes apply to linux 3.2 on. Signed-off-by: Adrian Hunter Cc: Acked-by: Jaehoon Chung Acked-by: Linus Walleij Signed-off-by: Chris Ball --- drivers/mmc/card/block.c | 54 ++++++++++++++++++++++++++++++++++-------------- drivers/mmc/core/core.c | 2 ++ 2 files changed, 40 insertions(+), 16 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index b180965..4232bc4 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -873,7 +873,7 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, { struct mmc_blk_data *md = mq->data; struct mmc_card *card = md->queue.card; - unsigned int from, nr, arg; + unsigned int from, nr, arg, trim_arg, erase_arg; int err = 0, type = MMC_BLK_SECDISCARD; if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) { @@ -881,20 +881,26 @@ static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, goto out; } + from = blk_rq_pos(req); + nr = blk_rq_sectors(req); + /* The sanitize operation is supported at v4.5 only */ if (mmc_can_sanitize(card)) { - err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, - EXT_CSD_SANITIZE_START, 1, 0); - goto out; + erase_arg = MMC_ERASE_ARG; + trim_arg = MMC_TRIM_ARG; + } else { + erase_arg = MMC_SECURE_ERASE_ARG; + trim_arg = MMC_SECURE_TRIM1_ARG; } - from = blk_rq_pos(req); - nr = blk_rq_sectors(req); - - if (mmc_can_trim(card) && !mmc_erase_group_aligned(card, from, nr)) - arg = MMC_SECURE_TRIM1_ARG; - else - arg = MMC_SECURE_ERASE_ARG; + if (mmc_erase_group_aligned(card, from, nr)) + arg = erase_arg; + else if (mmc_can_trim(card)) + arg = trim_arg; + else { + err = -EINVAL; + goto out; + } retry: if (card->quirks & MMC_QUIRK_INAND_CMD38) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, @@ -904,25 +910,41 @@ retry: INAND_CMD38_ARG_SECERASE, 0); if (err) - goto out; + goto out_retry; } + err = mmc_erase(card, from, nr, arg); - if (!err && arg == MMC_SECURE_TRIM1_ARG) { + if (err == -EIO) + goto out_retry; + if (err) + goto out; + + if (arg == MMC_SECURE_TRIM1_ARG) { if (card->quirks & MMC_QUIRK_INAND_CMD38) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, INAND_CMD38_ARG_EXT_CSD, INAND_CMD38_ARG_SECTRIM2, 0); if (err) - goto out; + goto out_retry; } + err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG); + if (err == -EIO) + goto out_retry; + if (err) + goto out; } -out: - if (err == -EIO && !mmc_blk_reset(md, card->host, type)) + + if (mmc_can_sanitize(card)) + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_SANITIZE_START, 1, 0); +out_retry: + if (err && !mmc_blk_reset(md, card->host, type)) goto retry; if (!err) mmc_blk_reset_success(md, type); +out: spin_lock_irq(&md->lock); __blk_end_request(req, err, blk_rq_bytes(req)); spin_unlock_irq(&md->lock); diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 83db5ef..e541efb 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1702,6 +1702,8 @@ EXPORT_SYMBOL(mmc_can_discard); int mmc_can_sanitize(struct mmc_card *card) { + if (!mmc_can_trim(card) && !mmc_can_erase(card)) + return 0; if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_SANITIZE) return 1; return 0; -- cgit v1.1 From b6d085f6f59108508c1eea9c5251deb765350c50 Mon Sep 17 00:00:00 2001 From: Chris Ball Date: Tue, 10 Apr 2012 09:57:36 -0400 Subject: mmc: omap_hsmmc: build fix for CONFIG_OF=y and CONFIG_MMC_OMAP_HS=m Commit 46856a68dc ("mmc: omap_hsmmc: Convert hsmmc driver to use device tree") introduced in 3.4-rc1 has a missing semi-colon, causing: drivers/mmc/host/omap_hsmmc.c:1745: error: expected ',' or ';' before 'extern' Reported-by: Russell King Signed-off-by: Chris Ball --- drivers/mmc/host/omap_hsmmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 5c2b1c1..cfd049c 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1741,7 +1741,7 @@ static const struct of_device_id omap_mmc_of_match[] = { .data = &omap4_reg_offset, }, {}, -} +}; MODULE_DEVICE_TABLE(of, omap_mmc_of_match); static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev) -- cgit v1.1 From 4d048f915f32c8455605b106aa0de2cf68a71903 Mon Sep 17 00:00:00 2001 From: Rajendra Nayak Date: Wed, 11 Apr 2012 15:33:13 +0530 Subject: mmc: omap_hsmmc: Get rid of of_have_populated_dt() usage of_have_populated_dt() is not expected to be used in drivers but instead only in early platform init code. Drivers on the other hand should rely on dev->of_node or of_match_device(). Besides usage of of_have_populated_dt() also throws up build error as below which was reported by Balaji TK, when omap_hsmmc is built as a module. ERROR: "allnodes" [drivers/mmc/host/omap_hsmmc.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 So get rid of all of_have_populated_dt() usage in omap_hsmmc driver and instead use dev->of_node to make the same dicisions as earlier. Signed-off-by: Rajendra Nayak Reported-by: Benoit Cousson Cc: Sebastian Andrzej Siewior Acked-by: Rob Herring Reviewed-by: Balaji T K Signed-off-by: Chris Ball --- drivers/mmc/host/omap_hsmmc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index cfd049c..56d4499 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -249,7 +249,7 @@ static int omap_hsmmc_set_power(struct device *dev, int slot, int power_on, * the pbias cell programming support is still missing when * booting with Device tree */ - if (of_have_populated_dt() && !vdd) + if (dev->of_node && !vdd) return 0; if (mmc_slot(host).before_set_reg) @@ -1549,7 +1549,7 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) * can't be allowed when booting with device * tree. */ - (!of_have_populated_dt())) { + !host->dev->of_node) { /* * The mmc_select_voltage fn of the core does * not seem to set the power_mode to -- cgit v1.1 From a46ef99d80817a167477ed1c8b4d90ee0c2e726f Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 20 Apr 2012 16:20:01 -0700 Subject: VM: add "vm_munmap()" helper function Like the vm_brk() function, this is the same as "do_munmap()", except it does the VM locking for the caller. Signed-off-by: Linus Torvalds --- arch/ia64/kernel/perfmon.c | 11 +++-------- arch/sparc/kernel/sys_sparc_64.c | 7 +------ arch/x86/kvm/x86.c | 4 +--- drivers/gpu/drm/i810/i810_dma.c | 4 +--- fs/aio.c | 7 ++----- include/linux/mm.h | 1 + mm/mmap.c | 15 +++++++++------ mm/nommu.c | 9 +++++++-- 8 files changed, 25 insertions(+), 33 deletions(-) diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 9d0fd7d..2777310 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -605,9 +605,9 @@ pfm_unprotect_ctx_ctxsw(pfm_context_t *x, unsigned long f) } static inline unsigned int -pfm_do_munmap(struct mm_struct *mm, unsigned long addr, size_t len, int acct) +pfm_vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len) { - return do_munmap(mm, addr, len); + return vm_munmap(mm, addr, len); } static inline unsigned long @@ -1473,13 +1473,8 @@ pfm_remove_smpl_mapping(struct task_struct *task, void *vaddr, unsigned long siz /* * does the actual unmapping */ - down_write(&task->mm->mmap_sem); - - DPRINT(("down_write done smpl_vaddr=%p size=%lu\n", vaddr, size)); + r = pfm_vm_munmap(task->mm, (unsigned long)vaddr, size); - r = pfm_do_munmap(task->mm, (unsigned long)vaddr, size, 0); - - up_write(&task->mm->mmap_sem); if (r !=0) { printk(KERN_ERR "perfmon: [%d] unable to unmap sampling buffer @%p size=%lu\n", task_pid_nr(task), vaddr, size); } diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 232df99..022e57a 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -566,15 +566,10 @@ out: SYSCALL_DEFINE2(64_munmap, unsigned long, addr, size_t, len) { - long ret; - if (invalid_64bit_range(addr, len)) return -EINVAL; - down_write(¤t->mm->mmap_sem); - ret = do_munmap(current->mm, addr, len); - up_write(¤t->mm->mmap_sem); - return ret; + return vm_munmap(current->mm, addr, len); } extern unsigned long do_mremap(unsigned long addr, diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 4044ce0..8beb9ce 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6366,10 +6366,8 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, if (!user_alloc && !old.user_alloc && old.rmap && !npages) { int ret; - down_write(¤t->mm->mmap_sem); - ret = do_munmap(current->mm, old.userspace_addr, + ret = vm_munmap(current->mm, old.userspace_addr, old.npages * PAGE_SIZE); - up_write(¤t->mm->mmap_sem); if (ret < 0) printk(KERN_WARNING "kvm_vm_ioctl_set_memory_region: " diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index 2c8a60c..b85337f 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -157,11 +157,9 @@ static int i810_unmap_buffer(struct drm_buf *buf) if (buf_priv->currently_mapped != I810_BUF_MAPPED) return -EINVAL; - down_write(¤t->mm->mmap_sem); - retcode = do_munmap(current->mm, + retcode = vm_munmap(current->mm, (unsigned long)buf_priv->virtual, (size_t) buf->total); - up_write(¤t->mm->mmap_sem); buf_priv->currently_mapped = I810_BUF_UNMAPPED; buf_priv->virtual = NULL; diff --git a/fs/aio.c b/fs/aio.c index da88760..99bd790 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -92,11 +92,8 @@ static void aio_free_ring(struct kioctx *ctx) for (i=0; inr_pages; i++) put_page(info->ring_pages[i]); - if (info->mmap_size) { - down_write(&ctx->mm->mmap_sem); - do_munmap(ctx->mm, info->mmap_base, info->mmap_size); - up_write(&ctx->mm->mmap_sem); - } + if (info->mmap_size) + vm_munmap(ctx->mm, info->mmap_base, info->mmap_size); if (info->ring_pages && info->ring_pages != info->internal_pages) kfree(info->ring_pages); diff --git a/include/linux/mm.h b/include/linux/mm.h index bfee4ad..cb61950 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1417,6 +1417,7 @@ extern int do_munmap(struct mm_struct *, unsigned long, size_t); /* These take the mm semaphore themselves */ extern unsigned long vm_brk(unsigned long, unsigned long); +extern int vm_munmap(struct mm_struct *, unsigned long, size_t); /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); diff --git a/mm/mmap.c b/mm/mmap.c index df51891..4af45f5 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2107,21 +2107,24 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) return 0; } - EXPORT_SYMBOL(do_munmap); -SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +int vm_munmap(struct mm_struct *mm, unsigned long start, size_t len) { int ret; - struct mm_struct *mm = current->mm; - - profile_munmap(addr); down_write(&mm->mmap_sem); - ret = do_munmap(mm, addr, len); + ret = do_munmap(mm, start, len); up_write(&mm->mmap_sem); return ret; } +EXPORT_SYMBOL(vm_munmap); + +SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +{ + profile_munmap(addr); + return vm_munmap(current->mm, addr, len); +} static inline void verify_mm_writelocked(struct mm_struct *mm) { diff --git a/mm/nommu.c b/mm/nommu.c index 6341933..11a69b2 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1709,16 +1709,21 @@ erase_whole_vma: } EXPORT_SYMBOL(do_munmap); -SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +int vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len) { int ret; - struct mm_struct *mm = current->mm; down_write(&mm->mmap_sem); ret = do_munmap(mm, addr, len); up_write(&mm->mmap_sem); return ret; } +EXPORT_SYMBOL(vm_munmap); + +SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) +{ + return vm_munmap(current->mm, addr, len); +} /* * release all the mappings made in a process's VM space -- cgit v1.1 From 6be5ceb02e98eaf6cfc4f8b12a896d04023f340d Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 20 Apr 2012 17:13:58 -0700 Subject: VM: add "vm_mmap()" helper function This continues the theme started with vm_brk() and vm_munmap(): vm_mmap() does the same thing as do_mmap(), but additionally does the required VM locking. This uninlines (and rewrites it to be clearer) do_mmap(), which sadly duplicates it in mm/mmap.c and mm/nommu.c. But that way we don't have to export our internal do_mmap_pgoff() function. Some day we hopefully don't have to export do_mmap() either, if all modular users can become the simpler vm_mmap() instead. We're actually very close to that already, with the notable exception of the (broken) use in i810, and a couple of stragglers in binfmt_elf. Signed-off-by: Linus Torvalds --- arch/tile/kernel/single_step.c | 4 +--- arch/x86/ia32/ia32_aout.c | 12 +++--------- arch/x86/kvm/x86.c | 4 +--- drivers/gpu/drm/drm_bufs.c | 12 ++++-------- drivers/gpu/drm/exynos/exynos_drm_gem.c | 4 +--- drivers/gpu/drm/i810/i810_dma.c | 1 + drivers/gpu/drm/i915/i915_gem.c | 4 +--- fs/binfmt_aout.c | 12 +++--------- fs/binfmt_elf.c | 8 ++------ fs/binfmt_elf_fdpic.c | 18 ++++-------------- fs/binfmt_flat.c | 12 +++--------- fs/binfmt_som.c | 12 +++--------- include/linux/mm.h | 23 ++++++----------------- mm/mmap.c | 29 +++++++++++++++++++++++++++-- mm/nommu.c | 29 +++++++++++++++++++++++++++-- 15 files changed, 87 insertions(+), 97 deletions(-) diff --git a/arch/tile/kernel/single_step.c b/arch/tile/kernel/single_step.c index 9efbc13..89529c9 100644 --- a/arch/tile/kernel/single_step.c +++ b/arch/tile/kernel/single_step.c @@ -346,12 +346,10 @@ void single_step_once(struct pt_regs *regs) } /* allocate a cache line of writable, executable memory */ - down_write(¤t->mm->mmap_sem); - buffer = (void __user *) do_mmap(NULL, 0, 64, + buffer = (void __user *) vm_mmap(NULL, 0, 64, PROT_EXEC | PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, 0); - up_write(¤t->mm->mmap_sem); if (IS_ERR((void __force *)buffer)) { kfree(state); diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index b6817ee..4824fb4 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -379,26 +379,22 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) goto beyond_if; } - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, + error = vm_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, PROT_READ | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT, fd_offset); - up_write(¤t->mm->mmap_sem); if (error != N_TXTADDR(ex)) { send_sig(SIGKILL, current, 0); return error; } - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data, + error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE | MAP_32BIT, fd_offset + ex.a_text); - up_write(¤t->mm->mmap_sem); if (error != N_DATADDR(ex)) { send_sig(SIGKILL, current, 0); return error; @@ -482,12 +478,10 @@ static int load_aout_library(struct file *file) goto out; } /* Now use mmap to map the library into memory. */ - down_write(¤t->mm->mmap_sem); - error = do_mmap(file, start_addr, ex.a_text + ex.a_data, + error = vm_mmap(file, start_addr, ex.a_text + ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_32BIT, N_TXTOFF(ex)); - up_write(¤t->mm->mmap_sem); retval = error; if (error != start_addr) goto out; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8beb9ce..1457be30 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6336,13 +6336,11 @@ int kvm_arch_prepare_memory_region(struct kvm *kvm, if (npages && !old.rmap) { unsigned long userspace_addr; - down_write(¤t->mm->mmap_sem); - userspace_addr = do_mmap(NULL, 0, + userspace_addr = vm_mmap(NULL, 0, npages * PAGE_SIZE, PROT_READ | PROT_WRITE, map_flags, 0); - up_write(¤t->mm->mmap_sem); if (IS_ERR((void *)userspace_addr)) return PTR_ERR((void *)userspace_addr); diff --git a/drivers/gpu/drm/drm_bufs.c b/drivers/gpu/drm/drm_bufs.c index 30372f7..348b367 100644 --- a/drivers/gpu/drm/drm_bufs.c +++ b/drivers/gpu/drm/drm_bufs.c @@ -1510,8 +1510,8 @@ int drm_freebufs(struct drm_device *dev, void *data, * \param arg pointer to a drm_buf_map structure. * \return zero on success or a negative number on failure. * - * Maps the AGP, SG or PCI buffer region with do_mmap(), and copies information - * about each buffer into user space. For PCI buffers, it calls do_mmap() with + * Maps the AGP, SG or PCI buffer region with vm_mmap(), and copies information + * about each buffer into user space. For PCI buffers, it calls vm_mmap() with * offset equal to 0, which drm_mmap() interpretes as PCI buffers and calls * drm_mmap_dma(). */ @@ -1553,18 +1553,14 @@ int drm_mapbufs(struct drm_device *dev, void *data, retcode = -EINVAL; goto done; } - down_write(¤t->mm->mmap_sem); - virtual = do_mmap(file_priv->filp, 0, map->size, + virtual = vm_mmap(file_priv->filp, 0, map->size, PROT_READ | PROT_WRITE, MAP_SHARED, token); - up_write(¤t->mm->mmap_sem); } else { - down_write(¤t->mm->mmap_sem); - virtual = do_mmap(file_priv->filp, 0, dma->byte_count, + virtual = vm_mmap(file_priv->filp, 0, dma->byte_count, PROT_READ | PROT_WRITE, MAP_SHARED, 0); - up_write(¤t->mm->mmap_sem); } if (virtual > -1024UL) { /* Real error */ diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 26d5197..392ce71 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -581,10 +581,8 @@ int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data, obj->filp->f_op = &exynos_drm_gem_fops; obj->filp->private_data = obj; - down_write(¤t->mm->mmap_sem); - addr = do_mmap(obj->filp, 0, args->size, + addr = vm_mmap(obj->filp, 0, args->size, PROT_READ | PROT_WRITE, MAP_SHARED, 0); - up_write(¤t->mm->mmap_sem); drm_gem_object_unreference_unlocked(obj); diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index b85337f..a4ba453 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -129,6 +129,7 @@ static int i810_map_buffer(struct drm_buf *buf, struct drm_file *file_priv) if (buf_priv->currently_mapped == I810_BUF_MAPPED) return -EINVAL; + /* This is all entirely broken */ down_write(¤t->mm->mmap_sem); old_fops = file_priv->filp->f_op; file_priv->filp->f_op = &i810_buffer_fops; diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 0e3c6ac..0d1e4b7 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -1087,11 +1087,9 @@ i915_gem_mmap_ioctl(struct drm_device *dev, void *data, if (obj == NULL) return -ENOENT; - down_write(¤t->mm->mmap_sem); - addr = do_mmap(obj->filp, 0, args->size, + addr = vm_mmap(obj->filp, 0, args->size, PROT_READ | PROT_WRITE, MAP_SHARED, args->offset); - up_write(¤t->mm->mmap_sem); drm_gem_object_unreference_unlocked(obj); if (IS_ERR((void *)addr)) return addr; diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c index 8852749..d146e18 100644 --- a/fs/binfmt_aout.c +++ b/fs/binfmt_aout.c @@ -319,24 +319,20 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs) goto beyond_if; } - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, + error = vm_mmap(bprm->file, N_TXTADDR(ex), ex.a_text, PROT_READ | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE, fd_offset); - up_write(¤t->mm->mmap_sem); if (error != N_TXTADDR(ex)) { send_sig(SIGKILL, current, 0); return error; } - down_write(¤t->mm->mmap_sem); - error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data, + error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE, fd_offset + ex.a_text); - up_write(¤t->mm->mmap_sem); if (error != N_DATADDR(ex)) { send_sig(SIGKILL, current, 0); return error; @@ -417,12 +413,10 @@ static int load_aout_library(struct file *file) goto out; } /* Now use mmap to map the library into memory. */ - down_write(¤t->mm->mmap_sem); - error = do_mmap(file, start_addr, ex.a_text + ex.a_data, + error = vm_mmap(file, start_addr, ex.a_text + ex.a_data, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE, N_TXTOFF(ex)); - up_write(¤t->mm->mmap_sem); retval = error; if (error != start_addr) goto out; diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 0708a0b..16f7354 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -958,10 +958,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) and some applications "depend" upon this behavior. Since we do not have the power to recompile these, we emulate the SVr4 behavior. Sigh. */ - down_write(¤t->mm->mmap_sem); - error = do_mmap(NULL, 0, PAGE_SIZE, PROT_READ | PROT_EXEC, + error = vm_mmap(NULL, 0, PAGE_SIZE, PROT_READ | PROT_EXEC, MAP_FIXED | MAP_PRIVATE, 0); - up_write(¤t->mm->mmap_sem); } #ifdef ELF_PLAT_INIT @@ -1046,8 +1044,7 @@ static int load_elf_library(struct file *file) eppnt++; /* Now use mmap to map the library into memory. */ - down_write(¤t->mm->mmap_sem); - error = do_mmap(file, + error = vm_mmap(file, ELF_PAGESTART(eppnt->p_vaddr), (eppnt->p_filesz + ELF_PAGEOFFSET(eppnt->p_vaddr)), @@ -1055,7 +1052,6 @@ static int load_elf_library(struct file *file) MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE, (eppnt->p_offset - ELF_PAGEOFFSET(eppnt->p_vaddr))); - up_write(¤t->mm->mmap_sem); if (error != ELF_PAGESTART(eppnt->p_vaddr)) goto out_free_ph; diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c index 9bd5612..d390a0f 100644 --- a/fs/binfmt_elf_fdpic.c +++ b/fs/binfmt_elf_fdpic.c @@ -390,21 +390,17 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm, (executable_stack == EXSTACK_DEFAULT && VM_STACK_FLAGS & VM_EXEC)) stack_prot |= PROT_EXEC; - down_write(¤t->mm->mmap_sem); - current->mm->start_brk = do_mmap(NULL, 0, stack_size, stack_prot, + current->mm->start_brk = vm_mmap(NULL, 0, stack_size, stack_prot, MAP_PRIVATE | MAP_ANONYMOUS | MAP_UNINITIALIZED | MAP_GROWSDOWN, 0); if (IS_ERR_VALUE(current->mm->start_brk)) { - up_write(¤t->mm->mmap_sem); retval = current->mm->start_brk; current->mm->start_brk = 0; goto error_kill; } - up_write(¤t->mm->mmap_sem); - current->mm->brk = current->mm->start_brk; current->mm->context.end_brk = current->mm->start_brk; current->mm->context.end_brk += @@ -955,10 +951,8 @@ static int elf_fdpic_map_file_constdisp_on_uclinux( if (params->flags & ELF_FDPIC_FLAG_EXECUTABLE) mflags |= MAP_EXECUTABLE; - down_write(&mm->mmap_sem); - maddr = do_mmap(NULL, load_addr, top - base, + maddr = vm_mmap(NULL, load_addr, top - base, PROT_READ | PROT_WRITE | PROT_EXEC, mflags, 0); - up_write(&mm->mmap_sem); if (IS_ERR_VALUE(maddr)) return (int) maddr; @@ -1096,10 +1090,8 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params, /* create the mapping */ disp = phdr->p_vaddr & ~PAGE_MASK; - down_write(&mm->mmap_sem); - maddr = do_mmap(file, maddr, phdr->p_memsz + disp, prot, flags, + maddr = vm_mmap(file, maddr, phdr->p_memsz + disp, prot, flags, phdr->p_offset - disp); - up_write(&mm->mmap_sem); kdebug("mmap[%d] sz=%lx pr=%x fl=%x of=%lx --> %08lx", loop, phdr->p_memsz + disp, prot, flags, @@ -1143,10 +1135,8 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params, unsigned long xmaddr; flags |= MAP_FIXED | MAP_ANONYMOUS; - down_write(&mm->mmap_sem); - xmaddr = do_mmap(NULL, xaddr, excess - excess1, + xmaddr = vm_mmap(NULL, xaddr, excess - excess1, prot, flags, 0); - up_write(&mm->mmap_sem); kdebug("mmap[%d] " " ad=%lx sz=%lx pr=%x fl=%x of=0 --> %08lx", diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c index 024d20e..6b2daf9 100644 --- a/fs/binfmt_flat.c +++ b/fs/binfmt_flat.c @@ -542,10 +542,8 @@ static int load_flat_file(struct linux_binprm * bprm, */ DBG_FLT("BINFMT_FLAT: ROM mapping of file (we hope)\n"); - down_write(¤t->mm->mmap_sem); - textpos = do_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, + textpos = vm_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_EXECUTABLE, 0); - up_write(¤t->mm->mmap_sem); if (!textpos || IS_ERR_VALUE(textpos)) { if (!textpos) textpos = (unsigned long) -ENOMEM; @@ -556,10 +554,8 @@ static int load_flat_file(struct linux_binprm * bprm, len = data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long); len = PAGE_ALIGN(len); - down_write(¤t->mm->mmap_sem); - realdatastart = do_mmap(0, 0, len, + realdatastart = vm_mmap(0, 0, len, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0); - up_write(¤t->mm->mmap_sem); if (realdatastart == 0 || IS_ERR_VALUE(realdatastart)) { if (!realdatastart) @@ -603,10 +599,8 @@ static int load_flat_file(struct linux_binprm * bprm, len = text_len + data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long); len = PAGE_ALIGN(len); - down_write(¤t->mm->mmap_sem); - textpos = do_mmap(0, 0, len, + textpos = vm_mmap(0, 0, len, PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0); - up_write(¤t->mm->mmap_sem); if (!textpos || IS_ERR_VALUE(textpos)) { if (!textpos) diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c index e4fc746..4517aaf 100644 --- a/fs/binfmt_som.c +++ b/fs/binfmt_som.c @@ -147,10 +147,8 @@ static int map_som_binary(struct file *file, code_size = SOM_PAGEALIGN(hpuxhdr->exec_tsize); current->mm->start_code = code_start; current->mm->end_code = code_start + code_size; - down_write(¤t->mm->mmap_sem); - retval = do_mmap(file, code_start, code_size, prot, + retval = vm_mmap(file, code_start, code_size, prot, flags, SOM_PAGESTART(hpuxhdr->exec_tfile)); - up_write(¤t->mm->mmap_sem); if (retval < 0 && retval > -1024) goto out; @@ -158,20 +156,16 @@ static int map_som_binary(struct file *file, data_size = SOM_PAGEALIGN(hpuxhdr->exec_dsize); current->mm->start_data = data_start; current->mm->end_data = bss_start = data_start + data_size; - down_write(¤t->mm->mmap_sem); - retval = do_mmap(file, data_start, data_size, + retval = vm_mmap(file, data_start, data_size, prot | PROT_WRITE, flags, SOM_PAGESTART(hpuxhdr->exec_dfile)); - up_write(¤t->mm->mmap_sem); if (retval < 0 && retval > -1024) goto out; som_brk = bss_start + SOM_PAGEALIGN(hpuxhdr->exec_bsize); current->mm->start_brk = current->mm->brk = som_brk; - down_write(¤t->mm->mmap_sem); - retval = do_mmap(NULL, bss_start, som_brk - bss_start, + retval = vm_mmap(NULL, bss_start, som_brk - bss_start, prot | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, 0); - up_write(¤t->mm->mmap_sem); if (retval > 0 || retval < -1024) retval = 0; out: diff --git a/include/linux/mm.h b/include/linux/mm.h index cb61950..86a692c 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1393,31 +1393,20 @@ extern int install_special_mapping(struct mm_struct *mm, extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); -extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, - unsigned long len, unsigned long prot, - unsigned long flag, unsigned long pgoff); extern unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long len, unsigned long flags, vm_flags_t vm_flags, unsigned long pgoff); - -static inline unsigned long do_mmap(struct file *file, unsigned long addr, - unsigned long len, unsigned long prot, - unsigned long flag, unsigned long offset) -{ - unsigned long ret = -EINVAL; - if ((offset + PAGE_ALIGN(len)) < offset) - goto out; - if (!(offset & ~PAGE_MASK)) - ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT); -out: - return ret; -} - +extern unsigned long do_mmap(struct file *, unsigned long, + unsigned long, unsigned long, + unsigned long, unsigned long); extern int do_munmap(struct mm_struct *, unsigned long, size_t); /* These take the mm semaphore themselves */ extern unsigned long vm_brk(unsigned long, unsigned long); extern int vm_munmap(struct mm_struct *, unsigned long, size_t); +extern unsigned long vm_mmap(struct file *, unsigned long, + unsigned long, unsigned long, + unsigned long, unsigned long); /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); diff --git a/mm/mmap.c b/mm/mmap.c index 4af45f5..b38b47e 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -953,7 +953,7 @@ static inline unsigned long round_hint_to_min(unsigned long hint) * The caller must hold down_write(¤t->mm->mmap_sem). */ -unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, +static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flags, unsigned long pgoff) { @@ -1089,7 +1089,32 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, return mmap_region(file, addr, len, flags, vm_flags, pgoff); } -EXPORT_SYMBOL(do_mmap_pgoff); + +unsigned long do_mmap(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, + unsigned long flag, unsigned long offset) +{ + if (unlikely(offset + PAGE_ALIGN(len) < offset)) + return -EINVAL; + if (unlikely(offset & ~PAGE_MASK)) + return -EINVAL; + return do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT); +} +EXPORT_SYMBOL(do_mmap); + +unsigned long vm_mmap(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, + unsigned long flag, unsigned long offset) +{ + unsigned long ret; + struct mm_struct *mm = current->mm; + + down_write(&mm->mmap_sem); + ret = do_mmap(file, addr, len, prot, flag, offset); + up_write(&mm->mmap_sem); + return ret; +} +EXPORT_SYMBOL(vm_mmap); SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, diff --git a/mm/nommu.c b/mm/nommu.c index 11a69b2..dd00383 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1233,7 +1233,7 @@ enomem: /* * handle mapping creation for uClinux */ -unsigned long do_mmap_pgoff(struct file *file, +static unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, @@ -1470,7 +1470,32 @@ error_getting_region: show_free_areas(0); return -ENOMEM; } -EXPORT_SYMBOL(do_mmap_pgoff); + +unsigned long do_mmap(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, + unsigned long flag, unsigned long offset) +{ + if (unlikely(offset + PAGE_ALIGN(len) < offset)) + return -EINVAL; + if (unlikely(offset & ~PAGE_MASK)) + return -EINVAL; + return do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT); +} +EXPORT_SYMBOL(do_mmap); + +unsigned long vm_mmap(struct file *file, unsigned long addr, + unsigned long len, unsigned long prot, + unsigned long flag, unsigned long offset) +{ + unsigned long ret; + struct mm_struct *mm = current->mm; + + down_write(&mm->mmap_sem); + ret = do_mmap(file, addr, len, prot, flag, offset); + up_write(&mm->mmap_sem); + return ret; +} +EXPORT_SYMBOL(vm_mmap); SYSCALL_DEFINE6(mmap_pgoff, unsigned long, addr, unsigned long, len, unsigned long, prot, unsigned long, flags, -- cgit v1.1 From 32d317c60e56c2a34463b51fc0336cc96b3e1735 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong Date: Wed, 11 Apr 2012 19:54:38 +0800 Subject: mmc: remove MMC bus legacy suspend/resume method MMC bus is using legacy suspend/resume method, which is not compatible if runtime pm callbacks are used. In this scenario, MMC bus suspend/resume callbacks cannot be called when system entering S3. So change to use the new defined dev_pm_ops for system sleeping mode. Tested on AM335x Platform. Solves major issue/crash reported at http://www.mail-archive.com/linux-omap@vger.kernel.org/msg65425.html Signed-off-by: Chuanxiao Dong Tested-by: Hebbar, Gururaja Acked-by: Linus Walleij Acked-by: Ulf Hansson Signed-off-by: Chris Ball --- drivers/mmc/card/block.c | 2 +- drivers/mmc/core/bus.c | 24 ++++++++---------------- include/linux/mmc/card.h | 2 +- 3 files changed, 10 insertions(+), 18 deletions(-) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 4232bc4..dabec55 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1824,7 +1824,7 @@ static void mmc_blk_remove(struct mmc_card *card) } #ifdef CONFIG_PM -static int mmc_blk_suspend(struct mmc_card *card, pm_message_t state) +static int mmc_blk_suspend(struct mmc_card *card) { struct mmc_blk_data *part_md; struct mmc_blk_data *md = mmc_get_drvdata(card); diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 3f60606..c60cee9 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -122,14 +122,14 @@ static int mmc_bus_remove(struct device *dev) return 0; } -static int mmc_bus_suspend(struct device *dev, pm_message_t state) +static int mmc_bus_suspend(struct device *dev) { struct mmc_driver *drv = to_mmc_driver(dev->driver); struct mmc_card *card = mmc_dev_to_card(dev); int ret = 0; if (dev->driver && drv->suspend) - ret = drv->suspend(card, state); + ret = drv->suspend(card); return ret; } @@ -165,20 +165,14 @@ static int mmc_runtime_idle(struct device *dev) return pm_runtime_suspend(dev); } +#endif /* !CONFIG_PM_RUNTIME */ + static const struct dev_pm_ops mmc_bus_pm_ops = { - .runtime_suspend = mmc_runtime_suspend, - .runtime_resume = mmc_runtime_resume, - .runtime_idle = mmc_runtime_idle, + SET_RUNTIME_PM_OPS(mmc_runtime_suspend, mmc_runtime_resume, + mmc_runtime_idle) + SET_SYSTEM_SLEEP_PM_OPS(mmc_bus_suspend, mmc_bus_resume) }; -#define MMC_PM_OPS_PTR (&mmc_bus_pm_ops) - -#else /* !CONFIG_PM_RUNTIME */ - -#define MMC_PM_OPS_PTR NULL - -#endif /* !CONFIG_PM_RUNTIME */ - static struct bus_type mmc_bus_type = { .name = "mmc", .dev_attrs = mmc_dev_attrs, @@ -186,9 +180,7 @@ static struct bus_type mmc_bus_type = { .uevent = mmc_bus_uevent, .probe = mmc_bus_probe, .remove = mmc_bus_remove, - .suspend = mmc_bus_suspend, - .resume = mmc_bus_resume, - .pm = MMC_PM_OPS_PTR, + .pm = &mmc_bus_pm_ops, }; int mmc_register_bus(void) diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 01beae7..629b823 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -481,7 +481,7 @@ struct mmc_driver { struct device_driver drv; int (*probe)(struct mmc_card *); void (*remove)(struct mmc_card *); - int (*suspend)(struct mmc_card *, pm_message_t); + int (*suspend)(struct mmc_card *); int (*resume)(struct mmc_card *); }; -- cgit v1.1 From a99aa9b9b4f4f3e496d17a1b4e0ff63fb0c9f31d Mon Sep 17 00:00:00 2001 From: Seungwon Jeon Date: Tue, 10 Apr 2012 09:53:32 +0900 Subject: mmc: dw_mmc: Fix switch from DMA to PIO When dw_mci_pre_dma_transfer returns failure in some reasons, dw_mci_submit_data will prepare to switch the PIO mode from DMA. After switching to PIO mode, DMA(IDMAC in particular) is still enabled. This makes the corruption in handling interrupt and the driver lock-up. Signed-off-by: Seungwon Jeon Acked-by: Will Newton Signed-off-by: Chris Ball --- drivers/mmc/host/dw_mmc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index bf3c9b4..f3b0fcd 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -526,8 +526,10 @@ static int dw_mci_submit_data_dma(struct dw_mci *host, struct mmc_data *data) return -ENODEV; sg_len = dw_mci_pre_dma_transfer(host, data, 0); - if (sg_len < 0) + if (sg_len < 0) { + host->dma_ops->stop(host); return sg_len; + } host->using_dma = 1; -- cgit v1.1 From 87b87a3fc0eec58d95e4216392f889a26439ad22 Mon Sep 17 00:00:00 2001 From: Daniel Drake Date: Tue, 10 Apr 2012 00:14:20 +0100 Subject: mmc: sdhci: refine non-removable card checking for card detection Commit c79396c191bc19 ("mmc: sdhci: prevent card detection activity for non-removable cards") disables card detection where the cards are marked as non-removable. This makes sense, but the implementation detail of calling mmc_card_is_removable() causes some problems, because mmc_card_is_removable() is overloaded with CONFIG_MMC_UNSAFE_RESUME semantics. In the OLPC XO case, we need CONFIG_MMC_UNSAFE_RESUME because our root filesystem is stored on SD, but we also have external SD card slots where we want automatic card detection. Refine the check to only apply to hosts marked as MMC_CAP_NONREMOVABLE, which is defined to mean that the card is *really* nonremovable. This could be revisited in future if we find a way to improve CONFIG_MMC_UNSAFE_RESUME semantics. Signed-off-by: Daniel Drake Acked-by: Chuanxiao Dong [stable@: please apply to 3.3-stable] Cc: stable Signed-off-by: Chris Ball --- drivers/mmc/host/sdhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 9aa77f3..ccefdeb 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -147,7 +147,7 @@ static void sdhci_set_card_detection(struct sdhci_host *host, bool enable) u32 present, irqs; if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) || - !mmc_card_is_removable(host->mmc)) + (host->mmc->caps & MMC_CAP_NONREMOVABLE)) return; present = sdhci_readl(host, SDHCI_PRESENT_STATE) & -- cgit v1.1 From 5ca6518832ac913ac277b50ceddda8372dbf7bea Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 17 Apr 2012 13:03:38 -0700 Subject: mmc: cd-gpio: Include header to pickup exported symbol prototypes Include the linux/mmc/cd-gpio.h header to pickup the prototypes for the two exported symbols. This quiets the sparse warnings: warning: symbol 'mmc_cd_gpio_request' was not declared. Should it be static? warning: symbol 'mmc_cd_gpio_free' was not declared. Should it be static? Signed-off-by: H Hartley Sweeten Acked-by: Guennadi Liakhovetski Acked-by: Venkatraman S Signed-off-by: Chris Ball --- drivers/mmc/core/cd-gpio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mmc/core/cd-gpio.c b/drivers/mmc/core/cd-gpio.c index 29de31e..2c14be7 100644 --- a/drivers/mmc/core/cd-gpio.c +++ b/drivers/mmc/core/cd-gpio.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include -- cgit v1.1 From b89152824f993a9572b47eb31f4579feadeac34c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eric=20B=C3=A9nard?= Date: Wed, 18 Apr 2012 02:30:20 +0200 Subject: mmc: unbreak sdhci-esdhc-imx on i.MX25 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This was broken by me in 37865fe91582582a6f6c00652f6a2b1ff71f8a78 ("mmc: sdhci-esdhc-imx: fix timeout on i.MX's sdhci") where more extensive tests would have shown that read or write of data to the card were failing (even if the partition table was correctly read). Signed-off-by: Eric Bénard Acked-by: Wolfram Sang Cc: stable Signed-off-by: Chris Ball --- drivers/mmc/host/sdhci-esdhc-imx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 6193a0d..8abdaf6 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -467,8 +467,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev) clk_prepare_enable(clk); pltfm_host->clk = clk; - if (!is_imx25_esdhc(imx_data)) - host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; + host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL; if (is_imx25_esdhc(imx_data) || is_imx35_esdhc(imx_data)) /* Fix errata ENGcm07207 present on i.MX25 and i.MX35 */ -- cgit v1.1 From 5699b0ca05f781d496d20ba87f916bd9eec7ea6a Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Fri, 20 Apr 2012 17:26:23 -0700 Subject: ARM: EXYNOS: Fix incorrect initialization of GIC Use the of_irq_init() call to setup the gic which also properly registers the gic device node pointer with gic irq domain, without which all interrupt specifier translations for gic fail. Signed-off-by: Thomas Abraham Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index b5e7f00..6c0e4f5 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -547,7 +547,7 @@ void __init exynos5_init_irq(void) { int irq; - gic_init(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU); + of_irq_init(exynos4_dt_irq_match); for (irq = 0; irq < EXYNOS5_MAX_COMBINER_NR; irq++) { combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), -- cgit v1.1 From e1631f989e0c6c8d9b43a2dbdd1097f70da603a5 Mon Sep 17 00:00:00 2001 From: Jaehoon Chung Date: Wed, 18 Apr 2012 15:42:31 +0900 Subject: mmc: dw_mmc: prevent NULL dereference for dma_ops Now, dma_ops is assumed that use the IDMAC. But if dma_ops is assigned the pdata->dma_ops, we didn't ensure that callback function is defined. If the callback isn't defined, then we should run in PIO mode. Signed-off-by: Jaehoon Chung Signed-off-by: Kyungmin Park Acked-by: Will Newton Signed-off-by: Chris Ball --- drivers/mmc/host/dw_mmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index f3b0fcd..ab3fc46 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -1881,7 +1881,8 @@ static void dw_mci_init_dma(struct dw_mci *host) if (!host->dma_ops) goto no_dma; - if (host->dma_ops->init) { + if (host->dma_ops->init && host->dma_ops->start && + host->dma_ops->stop && host->dma_ops->cleanup) { if (host->dma_ops->init(host)) { dev_err(&host->dev, "%s: Unable to initialize " "DMA Controller.\n", __func__); -- cgit v1.1 From 7c5709194096beea1ab6e6db46768d70a068efb0 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Thu, 19 Apr 2012 11:55:25 +0200 Subject: mmc: core: Do not pre-claim host in suspend Since SDIO drivers may want to do some SDIO operations in their suspend callback functions, we must not keep the host claimed when calling them. Daniel Drake reported that libertas_sdio encountered a deadlock in its suspend function. Signed-off-by: Ulf Hansson Tested-by: Daniel Drake [stable@: please apply to 3.2-stable and 3.3-stable] Cc: stable Signed-off-by: Chris Ball --- drivers/mmc/core/core.c | 55 ++++++++++++++++++------------------------------- 1 file changed, 20 insertions(+), 35 deletions(-) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index e541efb..ba821fe 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2238,6 +2238,7 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) mmc_card_is_removable(host)) return err; + mmc_claim_host(host); if (card && mmc_card_mmc(card) && (card->ext_csd.cache_size > 0)) { enable = !!enable; @@ -2255,6 +2256,7 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) card->ext_csd.cache_ctrl = enable; } } + mmc_release_host(host); return err; } @@ -2272,49 +2274,32 @@ int mmc_suspend_host(struct mmc_host *host) cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); - if (mmc_try_claim_host(host)) { - err = mmc_cache_ctrl(host, 0); - mmc_release_host(host); - } else { - err = -EBUSY; - } + err = mmc_cache_ctrl(host, 0); if (err) goto out; mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { - /* - * A long response time is not acceptable for device drivers - * when doing suspend. Prevent mmc_claim_host in the suspend - * sequence, to potentially wait "forever" by trying to - * pre-claim the host. - */ - if (mmc_try_claim_host(host)) { - if (host->bus_ops->suspend) { - err = host->bus_ops->suspend(host); - } - mmc_release_host(host); + if (host->bus_ops->suspend) + err = host->bus_ops->suspend(host); - if (err == -ENOSYS || !host->bus_ops->resume) { - /* - * We simply "remove" the card in this case. - * It will be redetected on resume. (Calling - * bus_ops->remove() with a claimed host can - * deadlock.) - */ - if (host->bus_ops->remove) - host->bus_ops->remove(host); - mmc_claim_host(host); - mmc_detach_bus(host); - mmc_power_off(host); - mmc_release_host(host); - host->pm_flags = 0; - err = 0; - } - } else { - err = -EBUSY; + if (err == -ENOSYS || !host->bus_ops->resume) { + /* + * We simply "remove" the card in this case. + * It will be redetected on resume. (Calling + * bus_ops->remove() with a claimed host can + * deadlock.) + */ + if (host->bus_ops->remove) + host->bus_ops->remove(host); + mmc_claim_host(host); + mmc_detach_bus(host); + mmc_power_off(host); + mmc_release_host(host); + host->pm_flags = 0; + err = 0; } } mmc_bus_put(host); -- cgit v1.1 From 95b72eb0bdef6476b7e73061f0382adf46c5495a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Fri, 20 Apr 2012 19:24:51 -0400 Subject: NFSv4: Ensure we do not reuse open owner names The NFSv4 spec is ambiguous about whether or not it is permissible to reuse open owner names, so play it safe. This patch adds a timestamp to the state_owner structure, and combines that with the IDA based uniquifier. Fixes a regression whereby the Linux server returns NFS4ERR_BAD_SEQID. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4_fs.h | 1 + fs/nfs/nfs4proc.c | 6 +++--- fs/nfs/nfs4state.c | 1 + fs/nfs/nfs4xdr.c | 9 +++++---- include/linux/nfs_xdr.h | 7 ++++++- 5 files changed, 16 insertions(+), 8 deletions(-) diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 97ecc86..b6db9e3 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -59,6 +59,7 @@ struct nfs_unique_id { #define NFS_SEQID_CONFIRMED 1 struct nfs_seqid_counter { + ktime_t create_time; int owner_id; int flags; u32 counter; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f875cf3..60d5f4c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -838,7 +838,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct dentry *dentry, p->o_arg.open_flags = flags; p->o_arg.fmode = fmode & (FMODE_READ|FMODE_WRITE); p->o_arg.clientid = server->nfs_client->cl_clientid; - p->o_arg.id = sp->so_seqid.owner_id; + p->o_arg.id.create_time = ktime_to_ns(sp->so_seqid.create_time); + p->o_arg.id.uniquifier = sp->so_seqid.owner_id; p->o_arg.name = &dentry->d_name; p->o_arg.server = server; p->o_arg.bitmask = server->attr_bitmask; @@ -1466,8 +1467,7 @@ static void nfs4_open_prepare(struct rpc_task *task, void *calldata) goto unlock_no_action; rcu_read_unlock(); } - /* Update sequence id. */ - data->o_arg.id = sp->so_seqid.owner_id; + /* Update client id. */ data->o_arg.clientid = sp->so_server->nfs_client->cl_clientid; if (data->o_arg.claim == NFS4_OPEN_CLAIM_PREVIOUS) { task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_NOATTR]; diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 0f43414..3b07f09 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -393,6 +393,7 @@ nfs4_remove_state_owner_locked(struct nfs4_state_owner *sp) static void nfs4_init_seqid_counter(struct nfs_seqid_counter *sc) { + sc->create_time = ktime_get(); sc->flags = 0; sc->counter = 0; spin_lock_init(&sc->lock); diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index c74fdb1..77fc5f9 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -74,7 +74,7 @@ static int nfs4_stat_to_errno(int); /* lock,open owner id: * we currently use size 2 (u64) out of (NFS4_OPAQUE_LIMIT >> 2) */ -#define open_owner_id_maxsz (1 + 1 + 4) +#define open_owner_id_maxsz (1 + 2 + 1 + 1 + 2) #define lock_owner_id_maxsz (1 + 1 + 4) #define decode_lockowner_maxsz (1 + XDR_QUADLEN(IDMAP_NAMESZ)) #define compound_encode_hdr_maxsz (3 + (NFS4_MAXTAGLEN >> 2)) @@ -1340,12 +1340,13 @@ static inline void encode_openhdr(struct xdr_stream *xdr, const struct nfs_opena */ encode_nfs4_seqid(xdr, arg->seqid); encode_share_access(xdr, arg->fmode); - p = reserve_space(xdr, 32); + p = reserve_space(xdr, 36); p = xdr_encode_hyper(p, arg->clientid); - *p++ = cpu_to_be32(20); + *p++ = cpu_to_be32(24); p = xdr_encode_opaque_fixed(p, "open id:", 8); *p++ = cpu_to_be32(arg->server->s_dev); - xdr_encode_hyper(p, arg->id); + *p++ = cpu_to_be32(arg->id.uniquifier); + xdr_encode_hyper(p, arg->id.create_time); } static inline void encode_createmode(struct xdr_stream *xdr, const struct nfs_openargs *arg) diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index bfd0d1b..7ba3551 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -312,6 +312,11 @@ struct nfs4_layoutreturn { int rpc_status; }; +struct stateowner_id { + __u64 create_time; + __u32 uniquifier; +}; + /* * Arguments to the open call. */ @@ -321,7 +326,7 @@ struct nfs_openargs { int open_flags; fmode_t fmode; __u64 clientid; - __u64 id; + struct stateowner_id id; union { struct { struct iattr * attrs; /* UNCHECKED, GUARDED */ -- cgit v1.1 From 899c612d74d4a242158a4db20367388d6299c028 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 20 Apr 2012 22:34:49 -0700 Subject: Input: synaptics - fix regression with "image sensor" trackpads commit 7968a5dd492ccc38345013e534ad4c8d6eb60ed1 Input: synaptics - add support for Relative mode Accidentally broke support for advanced gestures (multitouch) on some trackpads such as the one in my ThinkPad X220 by incorretly changing the condition for enabling them. This restores it. Signed-off-by: Benjamin Herrenschmidt CC: stable@kernel.org [3.3] Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/synaptics.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c index 8081a0a..a4b14a4 100644 --- a/drivers/input/mouse/synaptics.c +++ b/drivers/input/mouse/synaptics.c @@ -274,7 +274,8 @@ static int synaptics_set_advanced_gesture_mode(struct psmouse *psmouse) static unsigned char param = 0xc8; struct synaptics_data *priv = psmouse->private; - if (!SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) + if (!(SYN_CAP_ADV_GESTURE(priv->ext_cap_0c) || + SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c))) return 0; if (psmouse_sliced_command(psmouse, SYN_QUE_MODEL)) -- cgit v1.1 From 936af1576e4c24b466380fc2b8d93352161d13b0 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 20 Apr 2012 21:49:41 -0400 Subject: aio: don't bother with unmapping when aio_free_ring() is coming from exit_aio() ... since exit_mmap() is coming and it will munmap() everything anyway. In all other cases aio_free_ring() has ctx->mm == current->mm; moreover, all other callers of vm_munmap() have mm == current->mm, so this will allow us to get rid of mm argument of vm_munmap(). Signed-off-by: Al Viro --- fs/aio.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/fs/aio.c b/fs/aio.c index 99bd790..976e33d 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -92,8 +92,10 @@ static void aio_free_ring(struct kioctx *ctx) for (i=0; inr_pages; i++) put_page(info->ring_pages[i]); - if (info->mmap_size) + if (info->mmap_size) { + BUG_ON(ctx->mm != current->mm); vm_munmap(ctx->mm, info->mmap_base, info->mmap_size); + } if (info->ring_pages && info->ring_pages != info->internal_pages) kfree(info->ring_pages); @@ -386,6 +388,17 @@ void exit_aio(struct mm_struct *mm) "exit_aio:ioctx still alive: %d %d %d\n", atomic_read(&ctx->users), ctx->dead, ctx->reqs_active); + /* + * We don't need to bother with munmap() here - + * exit_mmap(mm) is coming and it'll unmap everything. + * Since aio_free_ring() uses non-zero ->mmap_size + * as indicator that it needs to unmap the area, + * just set it to 0; aio_free_ring() is the only + * place that uses ->mmap_size, so it's safe. + * That way we get all munmap done to current->mm - + * all other callers have ctx->mm == current->mm. + */ + ctx->ring_info.mmap_size = 0; put_ioctx(ctx); } } -- cgit v1.1 From 9f3a4afb276e4d8b3be7f3e678d4dbd11470416f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 20 Apr 2012 21:53:35 -0400 Subject: perfmon: kill some helpers and arguments pfm_vm_munmap() is simply vm_munmap() and pfm_remove_smpl_mapping() always get current as the first argument. Signed-off-by: Al Viro --- arch/ia64/kernel/perfmon.c | 13 ++++--------- 1 file changed, 4 insertions(+), 9 deletions(-) diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 2777310..899c0fa 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -604,12 +604,6 @@ pfm_unprotect_ctx_ctxsw(pfm_context_t *x, unsigned long f) spin_unlock(&(x)->ctx_lock); } -static inline unsigned int -pfm_vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len) -{ - return vm_munmap(mm, addr, len); -} - static inline unsigned long pfm_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags, unsigned long exec) { @@ -1458,8 +1452,9 @@ pfm_unreserve_session(pfm_context_t *ctx, int is_syswide, unsigned int cpu) * a PROTECT_CTX() section. */ static int -pfm_remove_smpl_mapping(struct task_struct *task, void *vaddr, unsigned long size) +pfm_remove_smpl_mapping(void *vaddr, unsigned long size) { + struct task_struct *task = current; int r; /* sanity checks */ @@ -1473,7 +1468,7 @@ pfm_remove_smpl_mapping(struct task_struct *task, void *vaddr, unsigned long siz /* * does the actual unmapping */ - r = pfm_vm_munmap(task->mm, (unsigned long)vaddr, size); + r = vm_munmap(current->mm, (unsigned long)vaddr, size); if (r !=0) { printk(KERN_ERR "perfmon: [%d] unable to unmap sampling buffer @%p size=%lu\n", task_pid_nr(task), vaddr, size); @@ -1940,7 +1935,7 @@ pfm_flush(struct file *filp, fl_owner_t id) * because some VM function reenables interrupts. * */ - if (smpl_buf_vaddr) pfm_remove_smpl_mapping(current, smpl_buf_vaddr, smpl_buf_size); + if (smpl_buf_vaddr) pfm_remove_smpl_mapping(smpl_buf_vaddr, smpl_buf_size); return 0; } -- cgit v1.1 From bfce281c287a427d0841fadf5d59242757b4e620 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 20 Apr 2012 21:57:04 -0400 Subject: kill mm argument of vm_munmap() it's always current->mm Signed-off-by: Al Viro --- arch/ia64/kernel/perfmon.c | 2 +- arch/sparc/kernel/sys_sparc_64.c | 2 +- arch/x86/kvm/x86.c | 2 +- drivers/gpu/drm/i810/i810_dma.c | 3 +-- fs/aio.c | 2 +- include/linux/mm.h | 2 +- mm/mmap.c | 5 +++-- mm/nommu.c | 5 +++-- 8 files changed, 12 insertions(+), 11 deletions(-) diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 899c0fa..f00ba02 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -1468,7 +1468,7 @@ pfm_remove_smpl_mapping(void *vaddr, unsigned long size) /* * does the actual unmapping */ - r = vm_munmap(current->mm, (unsigned long)vaddr, size); + r = vm_munmap((unsigned long)vaddr, size); if (r !=0) { printk(KERN_ERR "perfmon: [%d] unable to unmap sampling buffer @%p size=%lu\n", task_pid_nr(task), vaddr, size); diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c index 022e57a..3ee51f1 100644 --- a/arch/sparc/kernel/sys_sparc_64.c +++ b/arch/sparc/kernel/sys_sparc_64.c @@ -569,7 +569,7 @@ SYSCALL_DEFINE2(64_munmap, unsigned long, addr, size_t, len) if (invalid_64bit_range(addr, len)) return -EINVAL; - return vm_munmap(current->mm, addr, len); + return vm_munmap(addr, len); } extern unsigned long do_mremap(unsigned long addr, diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 1457be30..91a5e98 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6364,7 +6364,7 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, if (!user_alloc && !old.user_alloc && old.rmap && !npages) { int ret; - ret = vm_munmap(current->mm, old.userspace_addr, + ret = vm_munmap(old.userspace_addr, old.npages * PAGE_SIZE); if (ret < 0) printk(KERN_WARNING diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index a4ba453..f920fb5 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -158,8 +158,7 @@ static int i810_unmap_buffer(struct drm_buf *buf) if (buf_priv->currently_mapped != I810_BUF_MAPPED) return -EINVAL; - retcode = vm_munmap(current->mm, - (unsigned long)buf_priv->virtual, + retcode = vm_munmap((unsigned long)buf_priv->virtual, (size_t) buf->total); buf_priv->currently_mapped = I810_BUF_UNMAPPED; diff --git a/fs/aio.c b/fs/aio.c index 976e33d..67a6db3 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -94,7 +94,7 @@ static void aio_free_ring(struct kioctx *ctx) if (info->mmap_size) { BUG_ON(ctx->mm != current->mm); - vm_munmap(ctx->mm, info->mmap_base, info->mmap_size); + vm_munmap(info->mmap_base, info->mmap_size); } if (info->ring_pages && info->ring_pages != info->internal_pages) diff --git a/include/linux/mm.h b/include/linux/mm.h index 86a692c..74aa71b 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1403,7 +1403,7 @@ extern int do_munmap(struct mm_struct *, unsigned long, size_t); /* These take the mm semaphore themselves */ extern unsigned long vm_brk(unsigned long, unsigned long); -extern int vm_munmap(struct mm_struct *, unsigned long, size_t); +extern int vm_munmap(unsigned long, size_t); extern unsigned long vm_mmap(struct file *, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); diff --git a/mm/mmap.c b/mm/mmap.c index b38b47e..848ef52 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2134,9 +2134,10 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len) } EXPORT_SYMBOL(do_munmap); -int vm_munmap(struct mm_struct *mm, unsigned long start, size_t len) +int vm_munmap(unsigned long start, size_t len) { int ret; + struct mm_struct *mm = current->mm; down_write(&mm->mmap_sem); ret = do_munmap(mm, start, len); @@ -2148,7 +2149,7 @@ EXPORT_SYMBOL(vm_munmap); SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) { profile_munmap(addr); - return vm_munmap(current->mm, addr, len); + return vm_munmap(addr, len); } static inline void verify_mm_writelocked(struct mm_struct *mm) diff --git a/mm/nommu.c b/mm/nommu.c index dd00383..bb8f4f0 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1734,8 +1734,9 @@ erase_whole_vma: } EXPORT_SYMBOL(do_munmap); -int vm_munmap(struct mm_struct *mm, unsigned long addr, size_t len) +int vm_munmap(unsigned long addr, size_t len) { + struct mm_struct *mm = current->mm; int ret; down_write(&mm->mmap_sem); @@ -1747,7 +1748,7 @@ EXPORT_SYMBOL(vm_munmap); SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) { - return vm_munmap(current->mm, addr, len); + return vm_munmap(addr, len); } /* -- cgit v1.1 From c77365c963cf8703ecf1004cd3b298068a3e1b76 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 21 Apr 2012 12:31:05 -0400 Subject: NFSv4: Ensure that we don't drop a state owner more than once Retest the RB_EMPTY_NODE() condition under the spin lock to ensure that we don't call rb_erase() more than once on the same state owner. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4state.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index 3b07f09..b300fb8 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -435,13 +435,17 @@ nfs4_alloc_state_owner(struct nfs_server *server, static void nfs4_drop_state_owner(struct nfs4_state_owner *sp) { - if (!RB_EMPTY_NODE(&sp->so_server_node)) { + struct rb_node *rb_node = &sp->so_server_node; + + if (!RB_EMPTY_NODE(rb_node)) { struct nfs_server *server = sp->so_server; struct nfs_client *clp = server->nfs_client; spin_lock(&clp->cl_lock); - rb_erase(&sp->so_server_node, &server->state_owners); - RB_CLEAR_NODE(&sp->so_server_node); + if (!RB_EMPTY_NODE(rb_node)) { + rb_erase(rb_node, &server->state_owners); + RB_CLEAR_NODE(rb_node); + } spin_unlock(&clp->cl_lock); } } -- cgit v1.1 From 7bf97bc27308cfdc7a8dadd40ae50f7c4cb09b01 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Sat, 21 Apr 2012 12:36:19 -0400 Subject: NFSv4: Keep dropped state owners on the LRU list for a while To ensure that we don't reuse their identifiers. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4state.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index b300fb8..7f0fcfc 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -521,6 +521,14 @@ out: /** * nfs4_put_state_owner - Release a nfs4_state_owner * @sp: state owner data to release + * + * Note that we keep released state owners on an LRU + * list. + * This caches valid state owners so that they can be + * reused, to avoid the OPEN_CONFIRM on minor version 0. + * It also pins the uniquifier of dropped state owners for + * a while, to ensure that those state owner names are + * never reused. */ void nfs4_put_state_owner(struct nfs4_state_owner *sp) { @@ -530,15 +538,9 @@ void nfs4_put_state_owner(struct nfs4_state_owner *sp) if (!atomic_dec_and_lock(&sp->so_count, &clp->cl_lock)) return; - if (!RB_EMPTY_NODE(&sp->so_server_node)) { - sp->so_expires = jiffies; - list_add_tail(&sp->so_lru, &server->state_owners_lru); - spin_unlock(&clp->cl_lock); - } else { - nfs4_remove_state_owner_locked(sp); - spin_unlock(&clp->cl_lock); - nfs4_free_state_owner(sp); - } + sp->so_expires = jiffies; + list_add_tail(&sp->so_lru, &server->state_owners_lru); + spin_unlock(&clp->cl_lock); } /** -- cgit v1.1 From c5a99937a9cf74a623384023201a7d98b51e7e3b Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 18 Apr 2012 17:25:58 +0000 Subject: ks8851: Fix mutex deadlock in ks8851_net_stop() There is a potential deadlock scenario when the ks8851 driver is removed. The interrupt handler schedules a workqueue which acquires a mutex that ks8851_net_stop() also acquires before flushing the workqueue. Previously lockdep wouldn't be able to find this problem but now that it has the support we can trigger this lockdep warning by rmmoding the driver after an ifconfig up. Fix the possible deadlock by disabling the interrupts in the chip and then release the lock across the workqueue flushing. The mutex is only there to proect the registers anyway so this should be ok. ======================================================= [ INFO: possible circular locking dependency detected ] 3.0.21-00021-g8b33780-dirty #2911 ------------------------------------------------------- rmmod/125 is trying to acquire lock: ((&ks->irq_work)){+.+...}, at: [] flush_work+0x0/0xac but task is already holding lock: (&ks->lock){+.+...}, at: [] ks8851_net_stop+0x64/0x138 [ks8851] which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&ks->lock){+.+...}: [] __lock_acquire+0x940/0x9f8 [] lock_acquire+0x10c/0x130 [] mutex_lock_nested+0x68/0x3dc [] ks8851_irq_work+0x24/0x46c [ks8851] [] process_one_work+0x2d8/0x518 [] worker_thread+0x220/0x3a0 [] kthread+0x88/0x94 [] kernel_thread_exit+0x0/0x8 -> #0 ((&ks->irq_work)){+.+...}: [] validate_chain+0x914/0x1018 [] __lock_acquire+0x940/0x9f8 [] lock_acquire+0x10c/0x130 [] flush_work+0x4c/0xac [] ks8851_net_stop+0x6c/0x138 [ks8851] [] __dev_close_many+0x98/0xcc [] dev_close_many+0x68/0xd0 [] rollback_registered_many+0xcc/0x2b8 [] rollback_registered+0x28/0x34 [] unregister_netdevice_queue+0x58/0x7c [] unregister_netdev+0x18/0x20 [] ks8851_remove+0x64/0xb4 [ks8851] [] spi_drv_remove+0x18/0x1c [] __device_release_driver+0x7c/0xbc [] driver_detach+0x8c/0xb4 [] bus_remove_driver+0xb8/0xe8 [] sys_delete_module+0x1e8/0x27c [] ret_fast_syscall+0x0/0x3c other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ks->lock); lock((&ks->irq_work)); lock(&ks->lock); lock((&ks->irq_work)); *** DEADLOCK *** 4 locks held by rmmod/125: #0: (&__lockdep_no_validate__){+.+.+.}, at: [] driver_detach+0x6c/0xb4 #1: (&__lockdep_no_validate__){+.+.+.}, at: [] driver_detach+0x78/0xb4 #2: (rtnl_mutex){+.+.+.}, at: [] unregister_netdev+0xc/0x20 #3: (&ks->lock){+.+...}, at: [] ks8851_net_stop+0x64/0x138 [ks8851] Cc: Ben Dooks Signed-off-by: Stephen Boyd Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index e5dc075..ad10759 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -889,16 +889,17 @@ static int ks8851_net_stop(struct net_device *dev) netif_stop_queue(dev); mutex_lock(&ks->lock); + /* turn off the IRQs and ack any outstanding */ + ks8851_wrreg16(ks, KS_IER, 0x0000); + ks8851_wrreg16(ks, KS_ISR, 0xffff); + mutex_unlock(&ks->lock); /* stop any outstanding work */ flush_work(&ks->irq_work); flush_work(&ks->tx_work); flush_work(&ks->rxctrl_work); - /* turn off the IRQs and ack any outstanding */ - ks8851_wrreg16(ks, KS_IER, 0x0000); - ks8851_wrreg16(ks, KS_ISR, 0xffff); - + mutex_lock(&ks->lock); /* shutdown RX process */ ks8851_wrreg16(ks, KS_RXCR1, 0x0000); @@ -907,6 +908,7 @@ static int ks8851_net_stop(struct net_device *dev) /* set powermode to soft power down to save power */ ks8851_set_powermode(ks, PMECR_PM_SOFTDOWN); + mutex_unlock(&ks->lock); /* ensure any queued tx buffers are dumped */ while (!skb_queue_empty(&ks->txq)) { @@ -918,7 +920,6 @@ static int ks8851_net_stop(struct net_device *dev) dev_kfree_skb(txb); } - mutex_unlock(&ks->lock); return 0; } -- cgit v1.1 From 792df87228965c58c307877af00498641584bd47 Mon Sep 17 00:00:00 2001 From: Wenqi Ma Date: Thu, 19 Apr 2012 00:39:37 +0000 Subject: net/hyperv: Adding cancellation to ensure rndis filter is closed Although the network interface is down, the RX packets number which could be observed by ifconfig may keep on increasing. This is because the WORK scheduled in netvsc_set_multicast_list() may be executed after netvsc_close(). That means the rndis filter may be re-enabled by do_set_multicast() even if it was closed by netvsc_close(). By canceling possible WORK before close the rndis filter, the issue could be never happened. Signed-off-by: Wenqi Ma Reviewed-by: Wei Yongjun Signed-off-by: David S. Miller --- drivers/net/hyperv/netvsc_drv.c | 38 ++++++++++++++------------------------ 1 file changed, 14 insertions(+), 24 deletions(-) diff --git a/drivers/net/hyperv/netvsc_drv.c b/drivers/net/hyperv/netvsc_drv.c index dd29478..2d59138 100644 --- a/drivers/net/hyperv/netvsc_drv.c +++ b/drivers/net/hyperv/netvsc_drv.c @@ -44,6 +44,7 @@ struct net_device_context { /* point back to our device context */ struct hv_device *device_ctx; struct delayed_work dwork; + struct work_struct work; }; @@ -51,30 +52,22 @@ static int ring_size = 128; module_param(ring_size, int, S_IRUGO); MODULE_PARM_DESC(ring_size, "Ring buffer size (# of pages)"); -struct set_multicast_work { - struct work_struct work; - struct net_device *net; -}; - static void do_set_multicast(struct work_struct *w) { - struct set_multicast_work *swk = - container_of(w, struct set_multicast_work, work); - struct net_device *net = swk->net; - - struct net_device_context *ndevctx = netdev_priv(net); + struct net_device_context *ndevctx = + container_of(w, struct net_device_context, work); struct netvsc_device *nvdev; struct rndis_device *rdev; nvdev = hv_get_drvdata(ndevctx->device_ctx); - if (nvdev == NULL) - goto out; + if (nvdev == NULL || nvdev->ndev == NULL) + return; rdev = nvdev->extension; if (rdev == NULL) - goto out; + return; - if (net->flags & IFF_PROMISC) + if (nvdev->ndev->flags & IFF_PROMISC) rndis_filter_set_packet_filter(rdev, NDIS_PACKET_TYPE_PROMISCUOUS); else @@ -82,21 +75,13 @@ static void do_set_multicast(struct work_struct *w) NDIS_PACKET_TYPE_BROADCAST | NDIS_PACKET_TYPE_ALL_MULTICAST | NDIS_PACKET_TYPE_DIRECTED); - -out: - kfree(w); } static void netvsc_set_multicast_list(struct net_device *net) { - struct set_multicast_work *swk = - kmalloc(sizeof(struct set_multicast_work), GFP_ATOMIC); - if (swk == NULL) - return; + struct net_device_context *net_device_ctx = netdev_priv(net); - swk->net = net; - INIT_WORK(&swk->work, do_set_multicast); - schedule_work(&swk->work); + schedule_work(&net_device_ctx->work); } static int netvsc_open(struct net_device *net) @@ -125,6 +110,8 @@ static int netvsc_close(struct net_device *net) netif_tx_disable(net); + /* Make sure netvsc_set_multicast_list doesn't re-enable filter! */ + cancel_work_sync(&net_device_ctx->work); ret = rndis_filter_close(device_obj); if (ret != 0) netdev_err(net, "unable to close device (ret %d).\n", ret); @@ -335,6 +322,7 @@ static int netvsc_change_mtu(struct net_device *ndev, int mtu) nvdev->start_remove = true; cancel_delayed_work_sync(&ndevctx->dwork); + cancel_work_sync(&ndevctx->work); netif_tx_disable(ndev); rndis_filter_device_remove(hdev); @@ -403,6 +391,7 @@ static int netvsc_probe(struct hv_device *dev, net_device_ctx->device_ctx = dev; hv_set_drvdata(dev, net); INIT_DELAYED_WORK(&net_device_ctx->dwork, netvsc_send_garp); + INIT_WORK(&net_device_ctx->work, do_set_multicast); net->netdev_ops = &device_ops; @@ -456,6 +445,7 @@ static int netvsc_remove(struct hv_device *dev) ndev_ctx = netdev_priv(net); cancel_delayed_work_sync(&ndev_ctx->dwork); + cancel_work_sync(&ndev_ctx->work); /* Stop outbound asap */ netif_tx_disable(net); -- cgit v1.1 From e8195b24feb208f6e944e7542779f4397776794d Mon Sep 17 00:00:00 2001 From: Matt Renzelmann Date: Thu, 19 Apr 2012 07:17:17 +0000 Subject: ks8851: Fix request_irq/free_irq mismatch The dev_id parameter passed to free_irq needs to match the one passed to the corresponding request_irq. Signed-off-by: Matt Renzelmann Acked-by: Stephen Boyd Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index ad10759..f8dda00 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -1525,7 +1525,7 @@ static int __devinit ks8851_probe(struct spi_device *spi) err_netdev: - free_irq(ndev->irq, ndev); + free_irq(ndev->irq, ks); err_id: err_irq: -- cgit v1.1 From bbe362be5368b9f531b95a4a9b502ae2832e1dac Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Thu, 19 Apr 2012 07:16:21 +0000 Subject: drop_monitor: allow more events per second It seems there is a logic error in trace_drop_common(), since we store only 64 drops, even if they are from same location. This fix is a one liner, but we probably need more work to avoid useless atomic dec/inc Now I can watch 1 Mpps drops through dropwatch... Signed-off-by: Eric Dumazet Cc: Neil Horman Acked-by: Neil Horman Signed-off-by: David S. Miller --- net/core/drop_monitor.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index 7f36b38..5c3c81a 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -150,6 +150,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location) for (i = 0; i < msg->entries; i++) { if (!memcmp(&location, msg->points[i].pc, sizeof(void *))) { msg->points[i].count++; + atomic_inc(&data->dm_hit_count); goto out; } } -- cgit v1.1 From e9a5ea1852cd8d7e155d2e3a45e4a6ea25110f7d Mon Sep 17 00:00:00 2001 From: Yong Zhang Date: Thu, 19 Apr 2012 20:28:32 +0000 Subject: sparc32,leon: add notify_cpu_starting() Otherwise cpu_active_mask will not set, which lead to other issue. Signed-off-by: Yong Zhang Signed-off-by: Konrad Eisele Reviewed-by: Srivatsa S. Bhat Signed-off-by: David S. Miller --- arch/sparc/kernel/leon_smp.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c index 1210fde..160cac9 100644 --- a/arch/sparc/kernel/leon_smp.c +++ b/arch/sparc/kernel/leon_smp.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -78,6 +79,8 @@ void __cpuinit leon_callin(void) local_flush_tlb_all(); leon_configure_cache_smp(); + notify_cpu_starting(cpuid); + /* Get our local ticker going. */ smp_setup_percpu_timer(); -- cgit v1.1 From 163faf31778e536ac6125bc8b14f4667adc910e9 Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Thu, 19 Apr 2012 10:36:33 +0000 Subject: drivers/net: Do not free an IRQ if its request failed Refrain from attempting to free an interrupt line if the request fails and hence, there is no IRQ to free. CC: netdev@vger.kernel.org Signed-off-by: Lee Jones Signed-off-by: David S. Miller --- drivers/net/ethernet/smsc/smsc911x.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/ethernet/smsc/smsc911x.c b/drivers/net/ethernet/smsc/smsc911x.c index 5aa2dbe..cd3defb 100644 --- a/drivers/net/ethernet/smsc/smsc911x.c +++ b/drivers/net/ethernet/smsc/smsc911x.c @@ -2378,7 +2378,6 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) SET_NETDEV_DEV(dev, &pdev->dev); pdata = netdev_priv(dev); - dev->irq = irq_res->start; irq_flags = irq_res->flags & IRQF_TRIGGER_MASK; pdata->ioaddr = ioremap_nocache(res->start, res_size); @@ -2442,7 +2441,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev) if (retval) { SMSC_WARN(pdata, probe, "Unable to claim requested irq: %d", dev->irq); - goto out_free_irq; + goto out_disable_resources; } retval = register_netdev(dev); -- cgit v1.1 From 66f75a5d028beaf67c931435fdc3e7823125730c Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 21 Apr 2012 14:47:52 -0700 Subject: Linux 3.4-rc4 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index f6578f4..afc868e 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 4 SUBLEVEL = 0 -EXTRAVERSION = -rc3 +EXTRAVERSION = -rc4 NAME = Saber-toothed Squirrel # *DOCUMENTATION* -- cgit v1.1 From e95c8438ea1c56c254f0607c8fb6bca7f463c744 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 20 Apr 2012 21:03:36 +0200 Subject: drm/i915: fixup load-detect on enabled, but not active pipe Somehow we have a fast-path that tries to avoid going through the load-detect code when the encode already has a crtc associated. But this fails horribly when the crtc is off. The load detect pipe itself manages this case well (and also does not forget to restore the dpms state), so just rip out this special case. The issue seems to go back all the way to the commit that originally introduced load-detection on the vga output: commit e4a5d54f924ea5ce2913d9d0687d034004816465 Author: Ma Ling Date: Tue May 26 11:31:00 2009 +0800 drm/i915: Add support for VGA load detection (pre-945). Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43020 Reported-by: Jean Delvare Reviewed-by: Chris Wilson Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_crt.c | 29 +++++++++++------------------ 1 file changed, 11 insertions(+), 18 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 4d3d736..90b9793 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -430,8 +430,8 @@ intel_crt_detect(struct drm_connector *connector, bool force) { struct drm_device *dev = connector->dev; struct intel_crt *crt = intel_attached_crt(connector); - struct drm_crtc *crtc; enum drm_connector_status status; + struct intel_load_detect_pipe tmp; if (I915_HAS_HOTPLUG(dev)) { if (intel_crt_detect_hotplug(connector)) { @@ -450,23 +450,16 @@ intel_crt_detect(struct drm_connector *connector, bool force) return connector->status; /* for pre-945g platforms use load detect */ - crtc = crt->base.base.crtc; - if (crtc && crtc->enabled) { - status = intel_crt_load_detect(crt); - } else { - struct intel_load_detect_pipe tmp; - - if (intel_get_load_detect_pipe(&crt->base, connector, NULL, - &tmp)) { - if (intel_crt_detect_ddc(connector)) - status = connector_status_connected; - else - status = intel_crt_load_detect(crt); - intel_release_load_detect_pipe(&crt->base, connector, - &tmp); - } else - status = connector_status_unknown; - } + if (intel_get_load_detect_pipe(&crt->base, connector, NULL, + &tmp)) { + if (intel_crt_detect_ddc(connector)) + status = connector_status_connected; + else + status = intel_crt_load_detect(crt); + intel_release_load_detect_pipe(&crt->base, connector, + &tmp); + } else + status = connector_status_unknown; return status; } -- cgit v1.1 From 6f381fa344911d5a234b13574433cf23036f9467 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 12 Apr 2012 13:50:38 +0800 Subject: [SCSI] scsi_lib: use correct DMA device in __scsi_alloc_queue MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently, __scsi_alloc_queue uses SCSI host's parent device as DMA device to set segment boundary. But the parent device may not refer to the DMA device. For example, for ATA disk, SCSI host's parent device now refers to ATA port. Since commit d139b9b([SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects), a new field Scsi_Host->dma_dev was introduced to refer to the real DMA device. Use ->dma_dev in __scsi_alloc_queue to correctly set segment boundary. Bug report: http://marc.info/?l=linux-ide&m=133177818318187&w=2 Reported-and-tested-by: Jörg Sommer Signed-off-by: Lin Ming Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index ead6405..5dfd749 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1638,7 +1638,7 @@ struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost, request_fn_proc *request_fn) { struct request_queue *q; - struct device *dev = shost->shost_gendev.parent; + struct device *dev = shost->dma_dev; q = blk_init_queue(request_fn, NULL); if (!q) -- cgit v1.1 From f8fc75dc576eac0c996e4a792a4701819d999260 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 12 Apr 2012 13:50:39 +0800 Subject: [SCSI] libata: Pass correct DMA device to scsi host MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use scsi_add_host_with_dma in ata_scsi_add_hosts to pass in the correct DMA device(ATA host). Bug report: http://marc.info/?l=linux-ide&m=133177818318187&w=2 Reported-and-tested-by: Jörg Sommer Acked-by: Jeff Garzik Signed-off-by: Lin Ming Signed-off-by: James Bottomley --- drivers/ata/libata-scsi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 93dabdc..7832b1a 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3399,7 +3399,8 @@ int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) */ shost->max_host_blocked = 1; - rc = scsi_add_host(ap->scsi_host, &ap->tdev); + rc = scsi_add_host_with_dma(ap->scsi_host, + &ap->tdev, ap->host->dev); if (rc) goto err_add; } -- cgit v1.1 From 6c557cfee08751d22aed34840f389b846f0f4508 Mon Sep 17 00:00:00 2001 From: Roland Stigge Date: Wed, 4 Apr 2012 10:34:37 +0200 Subject: i2c: pnx: Disable clk in suspend In the driver's suspend function, clk_enable() was used instead of clk_disable(). This is corrected with this patch. Signed-off-by: Roland Stigge Reviewed-by: Arnd Bergmann CC: stable@vger.kernel.org [wsa: reworded commit header slightly] Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-pnx.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-pnx.c b/drivers/i2c/busses/i2c-pnx.c index 04be9f82..eb8ad53 100644 --- a/drivers/i2c/busses/i2c-pnx.c +++ b/drivers/i2c/busses/i2c-pnx.c @@ -546,8 +546,7 @@ static int i2c_pnx_controller_suspend(struct platform_device *pdev, { struct i2c_pnx_algo_data *alg_data = platform_get_drvdata(pdev); - /* FIXME: shouldn't this be clk_disable? */ - clk_enable(alg_data->clk); + clk_disable(alg_data->clk); return 0; } -- cgit v1.1 From f70893d08338b9cab8008d2e30404ce58930a513 Mon Sep 17 00:00:00 2001 From: Alok Chauhan Date: Mon, 2 Apr 2012 11:23:02 +0530 Subject: i2c: tegra: Add delay before resetting the controller after NACK NACK interrupt is generated before I2C controller generates the STOP condition on bus. Because of this reset of controller is happening before I2C controller could complete STOP condition. So wait for some time before resetting the controller so that STOP condition has delivered properly on bus. Added delay of 2 clock period before resetting the controller in case of NACK error. Signed-off-by: Alok Chauhan Acked-by: Stephen Warren [wsa: Reworded the commit msg and code comment a bit] Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-tegra.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c index e978635..55e5ea6 100644 --- a/drivers/i2c/busses/i2c-tegra.c +++ b/drivers/i2c/busses/i2c-tegra.c @@ -516,6 +516,14 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev, if (likely(i2c_dev->msg_err == I2C_ERR_NONE)) return 0; + /* + * NACK interrupt is generated before the I2C controller generates the + * STOP condition on the bus. So wait for 2 clock periods before resetting + * the controller so that STOP condition has been delivered properly. + */ + if (i2c_dev->msg_err == I2C_ERR_NO_ACK) + udelay(DIV_ROUND_UP(2 * 1000000, i2c_dev->bus_clk_rate)); + tegra_i2c_init(i2c_dev); if (i2c_dev->msg_err == I2C_ERR_NO_ACK) { if (msg->flags & I2C_M_IGNORE_NAK) -- cgit v1.1 From 8a52f9f347da721b199b7f9dcc0168bbe7d0baae Mon Sep 17 00:00:00 2001 From: Tomoya MORINAGA Date: Mon, 26 Mar 2012 14:55:25 +0900 Subject: i2c-eg20t: change timeout value 50msec to 1000msec Currently, during i2c works alone, wait-event timeout is not occurred. However, as CPU load increases, timeout occurs frequently. So, I modified like this patch. Modifying like this patch, I've never seen the timeout event with high load test. Signed-off-by: Tomoya MORINAGA Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-eg20t.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c index f086131..4a46c8b 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -324,7 +324,7 @@ static s32 pch_i2c_wait_for_xfer_complete(struct i2c_algo_pch_data *adap) { long ret; ret = wait_event_timeout(pch_event, - (adap->pch_event_flag != 0), msecs_to_jiffies(50)); + (adap->pch_event_flag != 0), msecs_to_jiffies(1000)); if (ret == 0) { pch_err(adap, "timeout: %x\n", adap->pch_event_flag); -- cgit v1.1 From 096407136769ec10690abe1baba092abcb763662 Mon Sep 17 00:00:00 2001 From: Tomoya MORINAGA Date: Mon, 26 Mar 2012 14:55:23 +0900 Subject: i2c-eg20t: Modify MODULE_AUTHOR's email address Signed-off-by: Tomoya MORINAGA Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-eg20t.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c index 4a46c8b..c811289b 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -1063,6 +1063,6 @@ module_exit(pch_pci_exit); MODULE_DESCRIPTION("Intel EG20T PCH/LAPIS Semico ML7213/ML7223/ML7831 IOH I2C"); MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Tomoya MORINAGA. "); +MODULE_AUTHOR("Tomoya MORINAGA. "); module_param(pch_i2c_speed, int, (S_IRUSR | S_IWUSR)); module_param(pch_clk, int, (S_IRUSR | S_IWUSR)); -- cgit v1.1 From d135c522f1234f62e81be29cebdf59e9955139ad Mon Sep 17 00:00:00 2001 From: Neal Cardwell Date: Sun, 22 Apr 2012 09:45:47 +0000 Subject: tcp: fix TCP_MAXSEG for established IPv6 passive sockets Commit f5fff5d forgot to fix TCP_MAXSEG behavior IPv6 sockets, so IPv6 TCP server sockets that used TCP_MAXSEG would find that the advmss of child sockets would be incorrect. This commit mirrors the advmss logic from tcp_v4_syn_recv_sock in tcp_v6_syn_recv_sock. Eventually this logic should probably be shared between IPv4 and IPv6, but this at least fixes this issue. Signed-off-by: Neal Cardwell Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/ipv6/tcp_ipv6.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 86cfe60..98256cf 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1383,6 +1383,10 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb, tcp_mtup_init(newsk); tcp_sync_mss(newsk, dst_mtu(dst)); newtp->advmss = dst_metric_advmss(dst); + if (tcp_sk(sk)->rx_opt.user_mss && + tcp_sk(sk)->rx_opt.user_mss < newtp->advmss) + newtp->advmss = tcp_sk(sk)->rx_opt.user_mss; + tcp_initialize_rcv_mss(newsk); if (tcp_rsk(req)->snt_synack) tcp_valid_rtt_meas(newsk, -- cgit v1.1 From 2ef822c55371b20548d4f58193c580407a5d738d Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Mon, 16 Apr 2012 19:55:39 +0000 Subject: powerpc/eeh: Fix crash caused by null eeh_dev The problem was reported by Anton Blanchard. While EEH error happened to the PCI device without the corresponding device driver, kernel crash was seen. Eventually, I successfully reproduced the problem on Firebird-L machine with utility "errinjct". Initially, the device driver for Emulex ethernet MAC has been disabled from .config and force data parity on the Emulex ethernet MAC with help of "errinjct". Eventually, I saw the kernel crash after issueing couple of "lspci -v" command. The root cause behind is that the PCI device, including the reference to the corresponding eeh device, will be removed from the system while EEH does recovery. Afterwards, the PCI device will be probed again and added into the system accordingly. So it's not safe to retrieve the eeh device from the corresponding PCI device after the PCI device has been removed and not added again. The patch fixes the issue and retrieve the eeh device from OF node instead of PCI device after the PCI device has been removed. Signed-off-by: Gavin Shan Tested-by: Anton Blanchard Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/eeh.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c index 309d38e..a75e37d 100644 --- a/arch/powerpc/platforms/pseries/eeh.c +++ b/arch/powerpc/platforms/pseries/eeh.c @@ -1076,7 +1076,7 @@ static void eeh_add_device_late(struct pci_dev *dev) pr_debug("EEH: Adding device %s\n", pci_name(dev)); dn = pci_device_to_OF_node(dev); - edev = pci_dev_to_eeh_dev(dev); + edev = of_node_to_eeh_dev(dn); if (edev->pdev == dev) { pr_debug("EEH: Already referenced !\n"); return; -- cgit v1.1 From 3027691e58bfb21f6ea2e9f1d225d11b4e2b20e2 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Wed, 18 Apr 2012 22:16:48 +0000 Subject: powerpc/pmac: Don't add_timer() twice If the interrupt and the timeout happen roughly at the same time, we can get into a situation where the timer function is run while the interrupt has already been processed. In this case, the timer function might end up doing an add_timer on an already pending timer, causing a BUG_ON() to trigger. Instead, just skip the whole timeout operation if we see that the timer is pending. The spinlock ensures that the only way that happens is if we already started a new operation and thus the timeout can be ignored. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/powermac/low_i2c.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/powerpc/platforms/powermac/low_i2c.c b/arch/powerpc/platforms/powermac/low_i2c.c index 996c5ff..03685a3 100644 --- a/arch/powerpc/platforms/powermac/low_i2c.c +++ b/arch/powerpc/platforms/powermac/low_i2c.c @@ -366,11 +366,20 @@ static void kw_i2c_timeout(unsigned long data) unsigned long flags; spin_lock_irqsave(&host->lock, flags); + + /* + * If the timer is pending, that means we raced with the + * irq, in which case we just return + */ + if (timer_pending(&host->timeout_timer)) + goto skip; + kw_i2c_handle_interrupt(host, kw_read_reg(reg_isr)); if (host->state != state_idle) { host->timeout_timer.expires = jiffies + KW_POLL_TIMEOUT; add_timer(&host->timeout_timer); } + skip: spin_unlock_irqrestore(&host->lock, flags); } -- cgit v1.1 From 3a2b4f7c355ff1c97e4adebadf0a1aefd7c4518a Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 19 Apr 2012 17:29:34 +0000 Subject: powerpc/mpic: Fix confusion between hw_irq and virq mpic_is_ipi() takes a virq and immediately converts it to a hw_irq. However, one of the two call sites calls it with a ... hw_irq. The other call site also happens to have the hw_irq at hand, so let's change it to just take that as an argument. Also change mpic_is_tm() for consistency. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/sysdev/mpic.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 9ac71eb..665b0f8 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -604,18 +604,14 @@ static struct mpic *mpic_find(unsigned int irq) } /* Determine if the linux irq is an IPI */ -static unsigned int mpic_is_ipi(struct mpic *mpic, unsigned int irq) +static unsigned int mpic_is_ipi(struct mpic *mpic, unsigned int src) { - unsigned int src = virq_to_hw(irq); - return (src >= mpic->ipi_vecs[0] && src <= mpic->ipi_vecs[3]); } /* Determine if the linux irq is a timer */ -static unsigned int mpic_is_tm(struct mpic *mpic, unsigned int irq) +static unsigned int mpic_is_tm(struct mpic *mpic, unsigned int src) { - unsigned int src = virq_to_hw(irq); - return (src >= mpic->timer_vecs[0] && src <= mpic->timer_vecs[7]); } @@ -1555,12 +1551,12 @@ void mpic_irq_set_priority(unsigned int irq, unsigned int pri) return; raw_spin_lock_irqsave(&mpic_lock, flags); - if (mpic_is_ipi(mpic, irq)) { + if (mpic_is_ipi(mpic, src)) { reg = mpic_ipi_read(src - mpic->ipi_vecs[0]) & ~MPIC_VECPRI_PRIORITY_MASK; mpic_ipi_write(src - mpic->ipi_vecs[0], reg | (pri << MPIC_VECPRI_PRIORITY_SHIFT)); - } else if (mpic_is_tm(mpic, irq)) { + } else if (mpic_is_tm(mpic, src)) { reg = mpic_tm_read(src - mpic->timer_vecs[0]) & ~MPIC_VECPRI_PRIORITY_MASK; mpic_tm_write(src - mpic->timer_vecs[0], -- cgit v1.1 From 3fca40c704dd013797f2c0c518f37cd2cc8e19fe Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 19 Apr 2012 17:29:42 +0000 Subject: irq: Add IRQ_TYPE_DEFAULT for use by PIC drivers This is meant typically to allow a PIC driver's irq domain map() callback to establish sane defaults for the interrupt (and make sure that the HW and the irq_desc are in sync as far as the trigger is concerned). The irq core may not call the set_trigger callback if it thinks the trigger is already set to the right setting, so we need to ensure new descriptors are properly synchronized with the hardware. Signed-off-by: Benjamin Herrenschmidt --- include/linux/irq.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 7810406..b27cfcf 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -49,6 +49,12 @@ typedef void (*irq_preflow_handler_t)(struct irq_data *data); * IRQ_TYPE_LEVEL_LOW - low level triggered * IRQ_TYPE_LEVEL_MASK - Mask to filter out the level bits * IRQ_TYPE_SENSE_MASK - Mask for all the above bits + * IRQ_TYPE_DEFAULT - For use by some PICs to ask irq_set_type + * to setup the HW to a sane default (used + * by irqdomain map() callbacks to synchronize + * the HW state and SW flags for a newly + * allocated descriptor). + * * IRQ_TYPE_PROBE - Special flag for probing in progress * * Bits which can be modified via irq_set/clear/modify_status_flags() @@ -77,6 +83,7 @@ enum { IRQ_TYPE_LEVEL_LOW = 0x00000008, IRQ_TYPE_LEVEL_MASK = (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH), IRQ_TYPE_SENSE_MASK = 0x0000000f, + IRQ_TYPE_DEFAULT = IRQ_TYPE_SENSE_MASK, IRQ_TYPE_PROBE = 0x00000010, -- cgit v1.1 From 446f6d06fab0b49c61887ecbe8286d6aaa796637 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 19 Apr 2012 17:30:57 +0000 Subject: powerpc/mpic: Properly set default triggers This gets rid of the unused default senses array, and replaces the incorrect use of IRQ_TYPE_NONE with the new IRQ_TYPE_DEFAULT for the initial set_trigger() call when mapping an interrupt. This in turn makes us read the HW state and update the irq desc accordingly. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/mpic.h | 18 ------------------ arch/powerpc/sysdev/mpic.c | 42 +++++++++++++++++++++++++++++------------ 2 files changed, 30 insertions(+), 30 deletions(-) diff --git a/arch/powerpc/include/asm/mpic.h b/arch/powerpc/include/asm/mpic.h index c65b929..c9f698a 100644 --- a/arch/powerpc/include/asm/mpic.h +++ b/arch/powerpc/include/asm/mpic.h @@ -275,9 +275,6 @@ struct mpic unsigned int isu_mask; /* Number of sources */ unsigned int num_sources; - /* default senses array */ - unsigned char *senses; - unsigned int senses_count; /* vector numbers used for internal sources (ipi/timers) */ unsigned int ipi_vecs[4]; @@ -415,21 +412,6 @@ extern struct mpic *mpic_alloc(struct device_node *node, extern void mpic_assign_isu(struct mpic *mpic, unsigned int isu_num, phys_addr_t phys_addr); -/* Set default sense codes - * - * @mpic: controller - * @senses: array of sense codes - * @count: size of above array - * - * Optionally provide an array (indexed on hardware interrupt numbers - * for this MPIC) of default sense codes for the chip. Those are linux - * sense codes IRQ_TYPE_* - * - * The driver gets ownership of the pointer, don't dispose of it or - * anything like that. __init only. - */ -extern void mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count); - /* Initialize the controller. After this has been called, none of the above * should be called again for this mpic diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 665b0f8..395af13 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -872,21 +872,45 @@ int mpic_set_irq_type(struct irq_data *d, unsigned int flow_type) if (src >= mpic->num_sources) return -EINVAL; + vold = mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)); + + /* We don't support "none" type */ if (flow_type == IRQ_TYPE_NONE) - if (mpic->senses && src < mpic->senses_count) - flow_type = mpic->senses[src]; - if (flow_type == IRQ_TYPE_NONE) - flow_type = IRQ_TYPE_LEVEL_LOW; + flow_type = IRQ_TYPE_DEFAULT; + + /* Default: read HW settings */ + if (flow_type == IRQ_TYPE_DEFAULT) { + switch(vold & (MPIC_INFO(VECPRI_POLARITY_MASK) | + MPIC_INFO(VECPRI_SENSE_MASK))) { + case MPIC_INFO(VECPRI_SENSE_EDGE) | + MPIC_INFO(VECPRI_POLARITY_POSITIVE): + flow_type = IRQ_TYPE_EDGE_RISING; + break; + case MPIC_INFO(VECPRI_SENSE_EDGE) | + MPIC_INFO(VECPRI_POLARITY_NEGATIVE): + flow_type = IRQ_TYPE_EDGE_FALLING; + break; + case MPIC_INFO(VECPRI_SENSE_LEVEL) | + MPIC_INFO(VECPRI_POLARITY_POSITIVE): + flow_type = IRQ_TYPE_LEVEL_HIGH; + break; + case MPIC_INFO(VECPRI_SENSE_LEVEL) | + MPIC_INFO(VECPRI_POLARITY_NEGATIVE): + flow_type = IRQ_TYPE_LEVEL_LOW; + break; + } + } + /* Apply to irq desc */ irqd_set_trigger_type(d, flow_type); + /* Apply to HW */ if (mpic_is_ht_interrupt(mpic, src)) vecpri = MPIC_VECPRI_POLARITY_POSITIVE | MPIC_VECPRI_SENSE_EDGE; else vecpri = mpic_type_to_vecpri(mpic, flow_type); - vold = mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI)); vnew = vold & ~(MPIC_INFO(VECPRI_POLARITY_MASK) | MPIC_INFO(VECPRI_SENSE_MASK)); vnew |= vecpri; @@ -1022,7 +1046,7 @@ static int mpic_host_map(struct irq_domain *h, unsigned int virq, irq_set_chip_and_handler(virq, chip, handle_fasteoi_irq); /* Set default irq type */ - irq_set_irq_type(virq, IRQ_TYPE_NONE); + irq_set_irq_type(virq, IRQ_TYPE_DEFAULT); /* If the MPIC was reset, then all vectors have already been * initialized. Otherwise, a per source lazy initialization @@ -1413,12 +1437,6 @@ void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num, mpic->num_sources = isu_first + mpic->isu_size; } -void __init mpic_set_default_senses(struct mpic *mpic, u8 *senses, int count) -{ - mpic->senses = senses; - mpic->senses_count = count; -} - void __init mpic_init(struct mpic *mpic) { int i, cpu; -- cgit v1.1 From eae1415dda93fd4edcce0637aa64b3c9b567563f Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Fri, 20 Apr 2012 11:39:17 -0400 Subject: hwmon: (ad7314) Fix build warning The following build warning is seen in some configurations. drivers/hwmon/ad7314.c: In function 'ad7314_show_temperature': drivers/hwmon/ad7314.c:70: warning: 'data' may be used uninitialized in this function Fix by overloading the return value from ad7314_spi_read with both data and error code (the returned data is really u16 and needs to be converted into a signed value anyway). Signed-off-by: Guenter Roeck Cc: Jonathan Cameron Acked-by: Jean Delvare --- drivers/hwmon/ad7314.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/hwmon/ad7314.c b/drivers/hwmon/ad7314.c index ce43642..f85ce70 100644 --- a/drivers/hwmon/ad7314.c +++ b/drivers/hwmon/ad7314.c @@ -47,7 +47,7 @@ struct ad7314_data { u16 rx ____cacheline_aligned; }; -static int ad7314_spi_read(struct ad7314_data *chip, s16 *data) +static int ad7314_spi_read(struct ad7314_data *chip) { int ret; @@ -57,9 +57,7 @@ static int ad7314_spi_read(struct ad7314_data *chip, s16 *data) return ret; } - *data = be16_to_cpu(chip->rx); - - return ret; + return be16_to_cpu(chip->rx); } static ssize_t ad7314_show_temperature(struct device *dev, @@ -70,12 +68,12 @@ static ssize_t ad7314_show_temperature(struct device *dev, s16 data; int ret; - ret = ad7314_spi_read(chip, &data); + ret = ad7314_spi_read(chip); if (ret < 0) return ret; switch (spi_get_device_id(chip->spi_dev)->driver_data) { case ad7314: - data = (data & AD7314_TEMP_MASK) >> AD7314_TEMP_OFFSET; + data = (ret & AD7314_TEMP_MASK) >> AD7314_TEMP_OFFSET; data = (data << 6) >> 6; return sprintf(buf, "%d\n", 250 * data); @@ -86,7 +84,7 @@ static ssize_t ad7314_show_temperature(struct device *dev, * with a sign bit - which is a 14 bit 2's complement * register. 1lsb - 31.25 milli degrees centigrade */ - data &= ADT7301_TEMP_MASK; + data = ret & ADT7301_TEMP_MASK; data = (data << 2) >> 2; return sprintf(buf, "%d\n", -- cgit v1.1 From 22b9153faa2263aa89625de25e71c7d44c8dbd16 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 9 Mar 2012 11:00:06 -0800 Subject: [SCSI] libsas: introduce sas_work to fix sas_drain_work vs sas_queue_work When requeuing work to a draining workqueue the last work instance may not be idle, so sas_queue_work() must not touch work->entry. Introduce sas_work with a drain_node list_head to have a private list for collecting work deferred due to drain collision. Fixes reports like: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [] process_one_work+0x2e/0x338 Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_discover.c | 28 +++++++++++++------------- drivers/scsi/libsas/sas_event.c | 24 ++++++++++++----------- drivers/scsi/libsas/sas_init.c | 11 +++++------ drivers/scsi/libsas/sas_internal.h | 6 +++--- drivers/scsi/libsas/sas_phy.c | 21 +++++++------------- drivers/scsi/libsas/sas_port.c | 15 +++++--------- include/scsi/libsas.h | 40 ++++++++++++++++++++++++++++++++++---- 7 files changed, 83 insertions(+), 62 deletions(-) diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index 3646796..c7ac882 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -205,8 +205,7 @@ void sas_notify_lldd_dev_gone(struct domain_device *dev) static void sas_probe_devices(struct work_struct *work) { struct domain_device *dev, *n; - struct sas_discovery_event *ev = - container_of(work, struct sas_discovery_event, work); + struct sas_discovery_event *ev = to_sas_discovery_event(work); struct asd_sas_port *port = ev->port; clear_bit(DISCE_PROBE, &port->disc.pending); @@ -291,8 +290,7 @@ static void sas_unregister_common_dev(struct asd_sas_port *port, struct domain_d static void sas_destruct_devices(struct work_struct *work) { struct domain_device *dev, *n; - struct sas_discovery_event *ev = - container_of(work, struct sas_discovery_event, work); + struct sas_discovery_event *ev = to_sas_discovery_event(work); struct asd_sas_port *port = ev->port; clear_bit(DISCE_DESTRUCT, &port->disc.pending); @@ -377,8 +375,7 @@ static void sas_discover_domain(struct work_struct *work) { struct domain_device *dev; int error = 0; - struct sas_discovery_event *ev = - container_of(work, struct sas_discovery_event, work); + struct sas_discovery_event *ev = to_sas_discovery_event(work); struct asd_sas_port *port = ev->port; clear_bit(DISCE_DISCOVER_DOMAIN, &port->disc.pending); @@ -437,8 +434,7 @@ static void sas_discover_domain(struct work_struct *work) static void sas_revalidate_domain(struct work_struct *work) { int res = 0; - struct sas_discovery_event *ev = - container_of(work, struct sas_discovery_event, work); + struct sas_discovery_event *ev = to_sas_discovery_event(work); struct asd_sas_port *port = ev->port; struct sas_ha_struct *ha = port->ha; @@ -466,21 +462,25 @@ static void sas_revalidate_domain(struct work_struct *work) /* ---------- Events ---------- */ -static void sas_chain_work(struct sas_ha_struct *ha, struct work_struct *work) +static void sas_chain_work(struct sas_ha_struct *ha, struct sas_work *sw) { - /* chained work is not subject to SA_HA_DRAINING or SAS_HA_REGISTERED */ - scsi_queue_work(ha->core.shost, work); + /* chained work is not subject to SA_HA_DRAINING or + * SAS_HA_REGISTERED, because it is either submitted in the + * workqueue, or known to be submitted from a context that is + * not racing against draining + */ + scsi_queue_work(ha->core.shost, &sw->work); } static void sas_chain_event(int event, unsigned long *pending, - struct work_struct *work, + struct sas_work *sw, struct sas_ha_struct *ha) { if (!test_and_set_bit(event, pending)) { unsigned long flags; spin_lock_irqsave(&ha->state_lock, flags); - sas_chain_work(ha, work); + sas_chain_work(ha, sw); spin_unlock_irqrestore(&ha->state_lock, flags); } } @@ -519,7 +519,7 @@ void sas_init_disc(struct sas_discovery *disc, struct asd_sas_port *port) disc->pending = 0; for (i = 0; i < DISC_NUM_EVENTS; i++) { - INIT_WORK(&disc->disc_work[i].work, sas_event_fns[i]); + INIT_SAS_WORK(&disc->disc_work[i].work, sas_event_fns[i]); disc->disc_work[i].port = port; } } diff --git a/drivers/scsi/libsas/sas_event.c b/drivers/scsi/libsas/sas_event.c index 16639bb..4e4292d 100644 --- a/drivers/scsi/libsas/sas_event.c +++ b/drivers/scsi/libsas/sas_event.c @@ -27,19 +27,21 @@ #include "sas_internal.h" #include "sas_dump.h" -void sas_queue_work(struct sas_ha_struct *ha, struct work_struct *work) +void sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw) { if (!test_bit(SAS_HA_REGISTERED, &ha->state)) return; - if (test_bit(SAS_HA_DRAINING, &ha->state)) - list_add(&work->entry, &ha->defer_q); - else - scsi_queue_work(ha->core.shost, work); + if (test_bit(SAS_HA_DRAINING, &ha->state)) { + /* add it to the defer list, if not already pending */ + if (list_empty(&sw->drain_node)) + list_add(&sw->drain_node, &ha->defer_q); + } else + scsi_queue_work(ha->core.shost, &sw->work); } static void sas_queue_event(int event, unsigned long *pending, - struct work_struct *work, + struct sas_work *work, struct sas_ha_struct *ha) { if (!test_and_set_bit(event, pending)) { @@ -55,7 +57,7 @@ static void sas_queue_event(int event, unsigned long *pending, void __sas_drain_work(struct sas_ha_struct *ha) { struct workqueue_struct *wq = ha->core.shost->work_q; - struct work_struct *w, *_w; + struct sas_work *sw, *_sw; set_bit(SAS_HA_DRAINING, &ha->state); /* flush submitters */ @@ -66,9 +68,9 @@ void __sas_drain_work(struct sas_ha_struct *ha) spin_lock_irq(&ha->state_lock); clear_bit(SAS_HA_DRAINING, &ha->state); - list_for_each_entry_safe(w, _w, &ha->defer_q, entry) { - list_del_init(&w->entry); - sas_queue_work(ha, w); + list_for_each_entry_safe(sw, _sw, &ha->defer_q, drain_node) { + list_del_init(&sw->drain_node); + sas_queue_work(ha, sw); } spin_unlock_irq(&ha->state_lock); } @@ -151,7 +153,7 @@ int sas_init_events(struct sas_ha_struct *sas_ha) int i; for (i = 0; i < HA_NUM_EVENTS; i++) { - INIT_WORK(&sas_ha->ha_events[i].work, sas_ha_event_fns[i]); + INIT_SAS_WORK(&sas_ha->ha_events[i].work, sas_ha_event_fns[i]); sas_ha->ha_events[i].ha = sas_ha; } diff --git a/drivers/scsi/libsas/sas_init.c b/drivers/scsi/libsas/sas_init.c index 120bff6..10cb5ae 100644 --- a/drivers/scsi/libsas/sas_init.c +++ b/drivers/scsi/libsas/sas_init.c @@ -94,8 +94,7 @@ void sas_hash_addr(u8 *hashed, const u8 *sas_addr) void sas_hae_reset(struct work_struct *work) { - struct sas_ha_event *ev = - container_of(work, struct sas_ha_event, work); + struct sas_ha_event *ev = to_sas_ha_event(work); struct sas_ha_struct *ha = ev->ha; clear_bit(HAE_RESET, &ha->pending); @@ -369,14 +368,14 @@ static void sas_phy_release(struct sas_phy *phy) static void phy_reset_work(struct work_struct *work) { - struct sas_phy_data *d = container_of(work, typeof(*d), reset_work); + struct sas_phy_data *d = container_of(work, typeof(*d), reset_work.work); d->reset_result = transport_sas_phy_reset(d->phy, d->hard_reset); } static void phy_enable_work(struct work_struct *work) { - struct sas_phy_data *d = container_of(work, typeof(*d), enable_work); + struct sas_phy_data *d = container_of(work, typeof(*d), enable_work.work); d->enable_result = sas_phy_enable(d->phy, d->enable); } @@ -389,8 +388,8 @@ static int sas_phy_setup(struct sas_phy *phy) return -ENOMEM; mutex_init(&d->event_lock); - INIT_WORK(&d->reset_work, phy_reset_work); - INIT_WORK(&d->enable_work, phy_enable_work); + INIT_SAS_WORK(&d->reset_work, phy_reset_work); + INIT_SAS_WORK(&d->enable_work, phy_enable_work); d->phy = phy; phy->hostdata = d; diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h index f05c638..507e4cf 100644 --- a/drivers/scsi/libsas/sas_internal.h +++ b/drivers/scsi/libsas/sas_internal.h @@ -45,10 +45,10 @@ struct sas_phy_data { struct mutex event_lock; int hard_reset; int reset_result; - struct work_struct reset_work; + struct sas_work reset_work; int enable; int enable_result; - struct work_struct enable_work; + struct sas_work enable_work; }; void sas_scsi_recover_host(struct Scsi_Host *shost); @@ -80,7 +80,7 @@ void sas_porte_broadcast_rcvd(struct work_struct *work); void sas_porte_link_reset_err(struct work_struct *work); void sas_porte_timer_event(struct work_struct *work); void sas_porte_hard_reset(struct work_struct *work); -void sas_queue_work(struct sas_ha_struct *ha, struct work_struct *work); +void sas_queue_work(struct sas_ha_struct *ha, struct sas_work *sw); int sas_notify_lldd_dev_found(struct domain_device *); void sas_notify_lldd_dev_gone(struct domain_device *); diff --git a/drivers/scsi/libsas/sas_phy.c b/drivers/scsi/libsas/sas_phy.c index dcfd4a9..521422e 100644 --- a/drivers/scsi/libsas/sas_phy.c +++ b/drivers/scsi/libsas/sas_phy.c @@ -32,8 +32,7 @@ static void sas_phye_loss_of_signal(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PHYE_LOSS_OF_SIGNAL, &phy->phy_events_pending); @@ -43,8 +42,7 @@ static void sas_phye_loss_of_signal(struct work_struct *work) static void sas_phye_oob_done(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PHYE_OOB_DONE, &phy->phy_events_pending); @@ -53,8 +51,7 @@ static void sas_phye_oob_done(struct work_struct *work) static void sas_phye_oob_error(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; struct sas_ha_struct *sas_ha = phy->ha; struct asd_sas_port *port = phy->port; @@ -85,8 +82,7 @@ static void sas_phye_oob_error(struct work_struct *work) static void sas_phye_spinup_hold(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; struct sas_ha_struct *sas_ha = phy->ha; struct sas_internal *i = @@ -127,14 +123,12 @@ int sas_register_phys(struct sas_ha_struct *sas_ha) phy->error = 0; INIT_LIST_HEAD(&phy->port_phy_el); for (k = 0; k < PORT_NUM_EVENTS; k++) { - INIT_WORK(&phy->port_events[k].work, - sas_port_event_fns[k]); + INIT_SAS_WORK(&phy->port_events[k].work, sas_port_event_fns[k]); phy->port_events[k].phy = phy; } for (k = 0; k < PHY_NUM_EVENTS; k++) { - INIT_WORK(&phy->phy_events[k].work, - sas_phy_event_fns[k]); + INIT_SAS_WORK(&phy->phy_events[k].work, sas_phy_event_fns[k]); phy->phy_events[k].phy = phy; } @@ -144,8 +138,7 @@ int sas_register_phys(struct sas_ha_struct *sas_ha) spin_lock_init(&phy->sas_prim_lock); phy->frame_rcvd_size = 0; - phy->phy = sas_phy_alloc(&sas_ha->core.shost->shost_gendev, - i); + phy->phy = sas_phy_alloc(&sas_ha->core.shost->shost_gendev, i); if (!phy->phy) return -ENOMEM; diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c index eb19c01..1cf7d75 100644 --- a/drivers/scsi/libsas/sas_port.c +++ b/drivers/scsi/libsas/sas_port.c @@ -208,8 +208,7 @@ void sas_deform_port(struct asd_sas_phy *phy, int gone) void sas_porte_bytes_dmaed(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PORTE_BYTES_DMAED, &phy->port_events_pending); @@ -219,8 +218,7 @@ void sas_porte_bytes_dmaed(struct work_struct *work) void sas_porte_broadcast_rcvd(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; unsigned long flags; u32 prim; @@ -237,8 +235,7 @@ void sas_porte_broadcast_rcvd(struct work_struct *work) void sas_porte_link_reset_err(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PORTE_LINK_RESET_ERR, &phy->port_events_pending); @@ -248,8 +245,7 @@ void sas_porte_link_reset_err(struct work_struct *work) void sas_porte_timer_event(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PORTE_TIMER_EVENT, &phy->port_events_pending); @@ -259,8 +255,7 @@ void sas_porte_timer_event(struct work_struct *work) void sas_porte_hard_reset(struct work_struct *work) { - struct asd_sas_event *ev = - container_of(work, struct asd_sas_event, work); + struct asd_sas_event *ev = to_asd_sas_event(work); struct asd_sas_phy *phy = ev->phy; clear_bit(PORTE_HARD_RESET, &phy->port_events_pending); diff --git a/include/scsi/libsas.h b/include/scsi/libsas.h index 5f5ed1b..f4f1c96 100644 --- a/include/scsi/libsas.h +++ b/include/scsi/libsas.h @@ -217,11 +217,29 @@ struct domain_device { struct kref kref; }; -struct sas_discovery_event { +struct sas_work { + struct list_head drain_node; struct work_struct work; +}; + +static inline void INIT_SAS_WORK(struct sas_work *sw, void (*fn)(struct work_struct *)) +{ + INIT_WORK(&sw->work, fn); + INIT_LIST_HEAD(&sw->drain_node); +} + +struct sas_discovery_event { + struct sas_work work; struct asd_sas_port *port; }; +static inline struct sas_discovery_event *to_sas_discovery_event(struct work_struct *work) +{ + struct sas_discovery_event *ev = container_of(work, typeof(*ev), work.work); + + return ev; +} + struct sas_discovery { struct sas_discovery_event disc_work[DISC_NUM_EVENTS]; unsigned long pending; @@ -244,7 +262,7 @@ struct asd_sas_port { struct list_head destroy_list; enum sas_linkrate linkrate; - struct work_struct work; + struct sas_work work; /* public: */ int id; @@ -270,10 +288,17 @@ struct asd_sas_port { }; struct asd_sas_event { - struct work_struct work; + struct sas_work work; struct asd_sas_phy *phy; }; +static inline struct asd_sas_event *to_asd_sas_event(struct work_struct *work) +{ + struct asd_sas_event *ev = container_of(work, typeof(*ev), work.work); + + return ev; +} + /* The phy pretty much is controlled by the LLDD. * The class only reads those fields. */ @@ -333,10 +358,17 @@ struct scsi_core { }; struct sas_ha_event { - struct work_struct work; + struct sas_work work; struct sas_ha_struct *ha; }; +static inline struct sas_ha_event *to_sas_ha_event(struct work_struct *work) +{ + struct sas_ha_event *ev = container_of(work, typeof(*ev), work.work); + + return ev; +} + enum sas_ha_state { SAS_HA_REGISTERED, SAS_HA_DRAINING, -- cgit v1.1 From 1699490db339e2c6b3037ea8e7dcd6b2755b688e Mon Sep 17 00:00:00 2001 From: Thomas Jackson Date: Fri, 17 Feb 2012 18:33:10 -0800 Subject: [SCSI] libsas: fix sas_find_bcast_phy() in the presence of 'vacant' phys If an expander reports 'PHY VACANT' for a phy index prior to the one that generated a BCN libsas fails rediscovery. Since a vacant phy is defined as a valid phy index that will never have an attached device just continue the search. Cc: Signed-off-by: Thomas Jackson Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 05acd9e..833bea0 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -1718,9 +1718,17 @@ static int sas_find_bcast_phy(struct domain_device *dev, int *phy_id, int phy_change_count = 0; res = sas_get_phy_change_count(dev, i, &phy_change_count); - if (res) - goto out; - else if (phy_change_count != ex->ex_phy[i].phy_change_count) { + switch (res) { + case SMP_RESP_PHY_VACANT: + case SMP_RESP_NO_PHY: + continue; + case SMP_RESP_FUNC_ACC: + break; + default: + return res; + } + + if (phy_change_count != ex->ex_phy[i].phy_change_count) { if (update) ex->ex_phy[i].phy_change_count = phy_change_count; @@ -1728,8 +1736,7 @@ static int sas_find_bcast_phy(struct domain_device *dev, int *phy_id, return 0; } } -out: - return res; + return 0; } static int sas_get_ex_change_count(struct domain_device *dev, int *ecc) -- cgit v1.1 From ec236e526777ea8825e6e0c3673a40389692eabf Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 12 Mar 2012 11:38:26 -0700 Subject: [SCSI] libsas: fix sas_get_port_device regression Commit 899fcf4 "[SCSI] libsas: set attached device type and target protocols for local phys" setup 'phy' to be dereferenced after list_for_each_entry(phy, &port->phy_list, port_phy_el) (i.e. phy == &port->phy_list) resulting in reports like: BUG: unable to handle kernel NULL pointer dereference at 00000000000002b0 IP: [] sas_discover_domain+0x29e/0x4fb [libsas] ...fix by deferring sas_phy_set_target() to the end of sas_get_port_device(). Reported-by: Tom Jackson Tested-by: Tom Jackson Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_discover.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index c7ac882..658f16c 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -134,10 +134,6 @@ static int sas_get_port_device(struct asd_sas_port *port) return -ENODEV; } - spin_lock_irq(&port->phy_list_lock); - list_for_each_entry(phy, &port->phy_list, port_phy_el) - sas_phy_set_target(phy, dev); - spin_unlock_irq(&port->phy_list_lock); rphy->identify.phy_identifier = phy->phy->identify.phy_identifier; memcpy(dev->sas_addr, port->attached_sas_addr, SAS_ADDR_SIZE); sas_fill_in_rphy(dev, rphy); @@ -164,6 +160,11 @@ static int sas_get_port_device(struct asd_sas_port *port) spin_unlock_irq(&port->dev_list_lock); } + spin_lock_irq(&port->phy_list_lock); + list_for_each_entry(phy, &port->phy_list, port_phy_el) + sas_phy_set_target(phy, dev); + spin_unlock_irq(&port->phy_list_lock); + return 0; } -- cgit v1.1 From 9487669fc225092cf315e1291ece28e23e6754f3 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 20 Mar 2012 10:53:24 -0700 Subject: [SCSI] libsas: unify domain_device sas_rphy lifetimes Since the domain_device can out live the scsi_target we need the rphy to follow suit otherwise we run into issues like: BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 IP: [] sas_ata_printk+0x43/0x6f [libsas] PGD 0 Oops: 0000 [#1] SMP CPU 1 Modules linked in: ses enclosure isci libsas scsi_transport_sas fuse sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf microcode pcspkr igb joydev iTCO_wdt ioatdma iTCO_vendor_support i2c_i801 i2c_core dca wmi hed ipv6 pata_acpi ata_generic [last unloaded: scsi_wait_scan] Pid: 129, comm: kworker/u:3 Not tainted 3.3.0-rc5-isci+ #1 Intel Corporation SandyBridge Platform/To be filled by O.E.M. RIP: 0010:[] [] sas_ata_printk+0x43/0x6f [libsas] RSP: 0018:ffff88042232dd70 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8804283165b8 RCX: ffff88042232dda0 RDX: ffff88042232dd78 RSI: ffff8804283165b8 RDI: ffffffffa01188d7 RBP: ffff88042232ddd0 R08: ffff880388454000 R09: ffff8803edfde1f8 R10: ffff8803edfde1f8 R11: ffff8803edfde1f8 R12: ffff880428316750 R13: ffff880388454000 R14: ffff8803f88b31d0 R15: ffff8803f8b21d50 FS: 0000000000000000(0000) GS:ffff88042ee20000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000050 CR3: 0000000001a05000 CR4: 00000000000406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process kworker/u:3 (pid: 129, threadinfo ffff88042232c000, task ffff88042230c920) Stack: 0000000000000000 ffff880400000018 ffff88042232dde0 ffff88042232dda0 ffffffffa01188c4 ffff88042ee93af0 ffff88042232ddb0 ffffffff8100e047 ffff88042232de10 ffff880420e5a2c8 ffff8803f8b21d50 ffff8803edfde1f8 Call Trace: [] ? load_TLS+0xb/0xf [] async_sas_ata_eh+0x66/0x95 [libsas] [] async_run_entry_fn+0x9e/0x131 Reported-by: Tom Jackson Tested-by: Tom Jackson Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_discover.c | 11 ++++++----- drivers/scsi/libsas/sas_expander.c | 6 ++++-- 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index 658f16c..13b5891 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -151,6 +151,7 @@ static int sas_get_port_device(struct asd_sas_port *port) sas_device_set_phy(dev, port->port); dev->rphy = rphy; + get_device(&dev->rphy->dev); if (dev_is_sata(dev) || dev->dev_type == SAS_END_DEV) list_add_tail(&dev->disco_list_node, &port->disco_list); @@ -255,6 +256,9 @@ void sas_free_device(struct kref *kref) { struct domain_device *dev = container_of(kref, typeof(*dev), kref); + put_device(&dev->rphy->dev); + dev->rphy = NULL; + if (dev->parent) sas_put_device(dev->parent); @@ -301,7 +305,6 @@ static void sas_destruct_devices(struct work_struct *work) sas_remove_children(&dev->rphy->dev); sas_rphy_delete(dev->rphy); - dev->rphy = NULL; sas_unregister_common_dev(port, dev); } } @@ -313,11 +316,11 @@ void sas_unregister_dev(struct asd_sas_port *port, struct domain_device *dev) /* this rphy never saw sas_rphy_add */ list_del_init(&dev->disco_list_node); sas_rphy_free(dev->rphy); - dev->rphy = NULL; sas_unregister_common_dev(port, dev); + return; } - if (dev->rphy && !test_and_set_bit(SAS_DEV_DESTROY, &dev->state)) { + if (!test_and_set_bit(SAS_DEV_DESTROY, &dev->state)) { sas_rphy_unlink(dev->rphy); list_move_tail(&dev->disco_list_node, &port->destroy_list); sas_discover_event(dev->port, DISCE_DESTRUCT); @@ -417,8 +420,6 @@ static void sas_discover_domain(struct work_struct *work) if (error) { sas_rphy_free(dev->rphy); - dev->rphy = NULL; - list_del_init(&dev->disco_list_node); spin_lock_irq(&port->dev_list_lock); list_del_init(&dev->dev_list_node); diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 833bea0..37c3c3f 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -783,6 +783,7 @@ static struct domain_device *sas_ex_discover_end_dev( sas_init_dev(child); child->rphy = rphy; + get_device(&rphy->dev); list_add_tail(&child->disco_list_node, &parent->port->disco_list); @@ -806,6 +807,7 @@ static struct domain_device *sas_ex_discover_end_dev( sas_init_dev(child); child->rphy = rphy; + get_device(&rphy->dev); sas_fill_in_rphy(child, rphy); list_add_tail(&child->disco_list_node, &parent->port->disco_list); @@ -830,8 +832,6 @@ static struct domain_device *sas_ex_discover_end_dev( out_list_del: sas_rphy_free(child->rphy); - child->rphy = NULL; - list_del(&child->disco_list_node); spin_lock_irq(&parent->port->dev_list_lock); list_del(&child->dev_list_node); @@ -911,6 +911,7 @@ static struct domain_device *sas_ex_discover_expander( } port = parent->port; child->rphy = rphy; + get_device(&rphy->dev); edev = rphy_to_expander_device(rphy); child->dev_type = phy->attached_dev_type; kref_get(&parent->kref); @@ -934,6 +935,7 @@ static struct domain_device *sas_ex_discover_expander( res = sas_discover_expander(child); if (res) { + sas_rphy_delete(rphy); spin_lock_irq(&parent->port->dev_list_lock); list_del(&child->dev_list_node); spin_unlock_irq(&parent->port->dev_list_lock); -- cgit v1.1 From 0f3fce5cc77e1f35758ef0e46a989e76e5046a7b Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 20 Mar 2012 13:24:29 -0700 Subject: [SCSI] libsas: fix ata_eh clobbering ex_phys via smp_ata_check_ready The check_ready implementation in the expander-attached ata device case polls on sas_ex_phy_discover(). The effect is that the ex_phy fields (critically ->attached_sas_addr) can change. When ata_eh ends and libsas comes along to revalidate the domain sas_unregister_devs_sas_addr() can fail to lookup devices to remove, or fail to re-add an ata device that ata_eh marked as disabled. So change the code to skip the sas_address and change count updates when ata_eh is active. Cc: Jack Wang Tested-by: Maciej Patelczyk Tested-by: Bartek Nowakowski Tested-by: Jacek Danecki Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 37c3c3f..c1f91b1 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -202,6 +202,7 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) u8 sas_addr[SAS_ADDR_SIZE]; struct smp_resp *resp = rsp; struct discover_resp *dr = &resp->disc; + struct sas_ha_struct *ha = dev->port->ha; struct expander_device *ex = &dev->ex_dev; struct ex_phy *phy = &ex->ex_phy[phy_id]; struct sas_rphy *rphy = dev->rphy; @@ -209,6 +210,8 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) char *type; if (new_phy) { + if (WARN_ON_ONCE(test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state))) + return; phy->phy = sas_phy_alloc(&rphy->dev, phy_id); /* FIXME: error_handling */ @@ -233,6 +236,8 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) memcpy(sas_addr, phy->attached_sas_addr, SAS_ADDR_SIZE); phy->attached_dev_type = to_dev_type(dr); + if (test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state)) + goto out; phy->phy_id = phy_id; phy->linkrate = dr->linkrate; phy->attached_sata_host = dr->attached_sata_host; @@ -266,6 +271,7 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) return; } + out: switch (phy->attached_dev_type) { case SATA_PENDING: type = "stp pending"; @@ -304,7 +310,15 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) else return; - SAS_DPRINTK("ex %016llx phy%02d:%c:%X attached: %016llx (%s)\n", + /* if the attached device type changed and ata_eh is active, + * make sure we run revalidation when eh completes (see: + * sas_enable_revalidation) + */ + if (test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state)) + set_bit(DISCE_REVALIDATE_DOMAIN, &dev->port->disc.pending); + + SAS_DPRINTK("%sex %016llx phy%02d:%c:%X attached: %016llx (%s)\n", + test_bit(SAS_HA_ATA_EH_ACTIVE, &ha->state) ? "ata: " : "", SAS_ADDR(dev->sas_addr), phy->phy_id, sas_route_char(dev, phy), phy->linkrate, SAS_ADDR(phy->attached_sas_addr), type); -- cgit v1.1 From b2024459252a9d2d312ee562f86f332a1498f412 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 21 Mar 2012 21:09:07 -0700 Subject: [SCSI] libsas, libata: fix start of life for a sas ata_port This changes the ordering of initialization and probing events from: 1/ allocate rphy in PORTE_BYTES_DMAED, DISCE_REVALIDATE_DOMAIN 2/ allocate ata_port and schedule port probe in DISCE_PROBE ...to: 1/ allocate ata_port in PORTE_BYTES_DMAED, DISCE_REVALIDATE_DOMAIN 2/ allocate rphy in PORTE_BYTES_DMAED, DISCE_REVALIDATE_DOMAIN 3/ schedule port probe in DISCE_PROBE This ordering prevents PHYE_SIGNAL_LOSS_EVENTS from sneaking in to destrory ata devices before they have been fully initialized: BUG: unable to handle kernel paging request at 0000000000003b10 IP: [] sas_ata_end_eh+0x12/0x5e [libsas] ... [] sas_unregister_common_dev+0x78/0xc9 [libsas] [] sas_unregister_dev+0x4f/0xad [libsas] [] sas_unregister_domain_devices+0x7f/0xbf [libsas] [] sas_deform_port+0x61/0x1b8 [libsas] [] sas_phye_loss_of_signal+0x29/0x2b [libsas] ...and kills the awkward "sata domain_device briefly existing in the domain without an ata_port" state. Reported-by: Michal Kosciowski Signed-off-by: Dan Williams Acked-by: Jeff Garzik Signed-off-by: James Bottomley --- drivers/ata/libata-scsi.c | 35 ++++++++++++++++++++--------------- drivers/scsi/ipr.c | 6 +++++- drivers/scsi/libsas/sas_ata.c | 33 ++++++++++----------------------- drivers/scsi/libsas/sas_discover.c | 13 ++++++++++--- drivers/scsi/libsas/sas_expander.c | 8 +++++--- include/linux/libata.h | 3 ++- include/scsi/sas_ata.h | 4 ++-- 7 files changed, 54 insertions(+), 48 deletions(-) diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 7832b1a..2222635 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -3839,18 +3839,25 @@ void ata_sas_port_stop(struct ata_port *ap) } EXPORT_SYMBOL_GPL(ata_sas_port_stop); -int ata_sas_async_port_init(struct ata_port *ap) +/** + * ata_sas_async_probe - simply schedule probing and return + * @ap: Port to probe + * + * For batch scheduling of probe for sas attached ata devices, assumes + * the port has already been through ata_sas_port_init() + */ +void ata_sas_async_probe(struct ata_port *ap) { - int rc = ap->ops->port_start(ap); - - if (!rc) { - ap->print_id = atomic_inc_return(&ata_print_id); - __ata_port_probe(ap); - } + __ata_port_probe(ap); +} +EXPORT_SYMBOL_GPL(ata_sas_async_probe); - return rc; +int ata_sas_sync_probe(struct ata_port *ap) +{ + return ata_port_probe(ap); } -EXPORT_SYMBOL_GPL(ata_sas_async_port_init); +EXPORT_SYMBOL_GPL(ata_sas_sync_probe); + /** * ata_sas_port_init - Initialize a SATA device @@ -3867,12 +3874,10 @@ int ata_sas_port_init(struct ata_port *ap) { int rc = ap->ops->port_start(ap); - if (!rc) { - ap->print_id = atomic_inc_return(&ata_print_id); - rc = ata_port_probe(ap); - } - - return rc; + if (rc) + return rc; + ap->print_id = atomic_inc_return(&ata_print_id); + return 0; } EXPORT_SYMBOL_GPL(ata_sas_port_init); diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index e002cd4..467dc38 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -4549,8 +4549,12 @@ static int ipr_ata_slave_alloc(struct scsi_device *sdev) ENTER; if (sdev->sdev_target) sata_port = sdev->sdev_target->hostdata; - if (sata_port) + if (sata_port) { rc = ata_sas_port_init(sata_port->ap); + if (rc == 0) + rc = ata_sas_sync_probe(sata_port->ap); + } + if (rc) ipr_slave_destroy(sdev); diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c index bc0cecc..441d88a 100644 --- a/drivers/scsi/libsas/sas_ata.c +++ b/drivers/scsi/libsas/sas_ata.c @@ -546,11 +546,12 @@ static struct ata_port_info sata_port_info = { .port_ops = &sas_sata_ops }; -int sas_ata_init_host_and_port(struct domain_device *found_dev) +int sas_ata_init(struct domain_device *found_dev) { struct sas_ha_struct *ha = found_dev->port->ha; struct Scsi_Host *shost = ha->core.shost; struct ata_port *ap; + int rc; ata_host_init(&found_dev->sata_dev.ata_host, ha->dev, @@ -567,8 +568,11 @@ int sas_ata_init_host_and_port(struct domain_device *found_dev) ap->private_data = found_dev; ap->cbl = ATA_CBL_SATA; ap->scsi_host = shost; - /* publish initialized ata port */ - smp_wmb(); + rc = ata_sas_port_init(ap); + if (rc) { + ata_sas_port_destroy(ap); + return rc; + } found_dev->sata_dev.ap = ap; return 0; @@ -648,18 +652,13 @@ static void sas_get_ata_command_set(struct domain_device *dev) void sas_probe_sata(struct asd_sas_port *port) { struct domain_device *dev, *n; - int err; mutex_lock(&port->ha->disco_mutex); - list_for_each_entry_safe(dev, n, &port->disco_list, disco_list_node) { + list_for_each_entry(dev, &port->disco_list, disco_list_node) { if (!dev_is_sata(dev)) continue; - err = sas_ata_init_host_and_port(dev); - if (err) - sas_fail_probe(dev, __func__, err); - else - ata_sas_async_port_init(dev->sata_dev.ap); + ata_sas_async_probe(dev->sata_dev.ap); } mutex_unlock(&port->ha->disco_mutex); @@ -718,18 +717,6 @@ static void async_sas_ata_eh(void *data, async_cookie_t cookie) sas_put_device(dev); } -static bool sas_ata_dev_eh_valid(struct domain_device *dev) -{ - struct ata_port *ap; - - if (!dev_is_sata(dev)) - return false; - ap = dev->sata_dev.ap; - /* consume fully initialized ata ports */ - smp_rmb(); - return !!ap; -} - void sas_ata_strategy_handler(struct Scsi_Host *shost) { struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); @@ -753,7 +740,7 @@ void sas_ata_strategy_handler(struct Scsi_Host *shost) spin_lock(&port->dev_list_lock); list_for_each_entry(dev, &port->dev_list, dev_list_node) { - if (!sas_ata_dev_eh_valid(dev)) + if (!dev_is_sata(dev)) continue; async_schedule_domain(async_sas_ata_eh, dev, &async); } diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c index 13b5891..629a086 100644 --- a/drivers/scsi/libsas/sas_discover.c +++ b/drivers/scsi/libsas/sas_discover.c @@ -72,6 +72,7 @@ static int sas_get_port_device(struct asd_sas_port *port) struct asd_sas_phy *phy; struct sas_rphy *rphy; struct domain_device *dev; + int rc = -ENODEV; dev = sas_alloc_device(); if (!dev) @@ -110,9 +111,16 @@ static int sas_get_port_device(struct asd_sas_port *port) sas_init_dev(dev); + dev->port = port; switch (dev->dev_type) { - case SAS_END_DEV: case SATA_DEV: + rc = sas_ata_init(dev); + if (rc) { + rphy = NULL; + break; + } + /* fall through */ + case SAS_END_DEV: rphy = sas_end_device_alloc(port->port); break; case EDGE_DEV: @@ -131,7 +139,7 @@ static int sas_get_port_device(struct asd_sas_port *port) if (!rphy) { sas_put_device(dev); - return -ENODEV; + return rc; } rphy->identify.phy_identifier = phy->phy->identify.phy_identifier; @@ -139,7 +147,6 @@ static int sas_get_port_device(struct asd_sas_port *port) sas_fill_in_rphy(dev, rphy); sas_hash_addr(dev->hashed_sas_addr, dev->sas_addr); port->port_dev = dev; - dev->port = port; dev->linkrate = port->linkrate; dev->min_linkrate = port->linkrate; dev->max_linkrate = port->linkrate; diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index c1f91b1..75247a1 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -790,12 +790,14 @@ static struct domain_device *sas_ex_discover_end_dev( if (res) goto out_free; + sas_init_dev(child); + res = sas_ata_init(child); + if (res) + goto out_free; rphy = sas_end_device_alloc(phy->port); - if (unlikely(!rphy)) + if (!rphy) goto out_free; - sas_init_dev(child); - child->rphy = rphy; get_device(&rphy->dev); diff --git a/include/linux/libata.h b/include/linux/libata.h index 42378d6..e926df7 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -996,7 +996,8 @@ extern int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *dev, extern void ata_sas_port_destroy(struct ata_port *); extern struct ata_port *ata_sas_port_alloc(struct ata_host *, struct ata_port_info *, struct Scsi_Host *); -extern int ata_sas_async_port_init(struct ata_port *); +extern void ata_sas_async_probe(struct ata_port *ap); +extern int ata_sas_sync_probe(struct ata_port *ap); extern int ata_sas_port_init(struct ata_port *); extern int ata_sas_port_start(struct ata_port *ap); extern void ata_sas_port_stop(struct ata_port *ap); diff --git a/include/scsi/sas_ata.h b/include/scsi/sas_ata.h index cdccd2e..77670e8 100644 --- a/include/scsi/sas_ata.h +++ b/include/scsi/sas_ata.h @@ -37,7 +37,7 @@ static inline int dev_is_sata(struct domain_device *dev) } int sas_get_ata_info(struct domain_device *dev, struct ex_phy *phy); -int sas_ata_init_host_and_port(struct domain_device *found_dev); +int sas_ata_init(struct domain_device *dev); void sas_ata_task_abort(struct sas_task *task); void sas_ata_strategy_handler(struct Scsi_Host *shost); void sas_ata_eh(struct Scsi_Host *shost, struct list_head *work_q, @@ -52,7 +52,7 @@ static inline int dev_is_sata(struct domain_device *dev) { return 0; } -static inline int sas_ata_init_host_and_port(struct domain_device *found_dev) +static inline int sas_ata_init(struct domain_device *dev) { return 0; } -- cgit v1.1 From 7d1d865181185bdf1316d236b1b4bd02c9020729 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 20 Mar 2012 10:50:27 -0700 Subject: [SCSI] libsas: fix false positive 'device attached' conditions Normalize phy->attached_sas_addr to return a zero-address in the case when device-type == NO_DEVICE or the linkrate is invalid to handle expanders that put non-zero sas addresses in the discovery response: sas: ex 5001b4da000f903f phy02:U:0 attached: 0100000000000000 (no device) sas: ex 5001b4da000f903f phy01:U:0 attached: 0100000000000000 (no device) sas: ex 5001b4da000f903f phy03:U:0 attached: 0100000000000000 (no device) sas: ex 5001b4da000f903f phy00:U:0 attached: 0100000000000000 (no device) Reported-by: Andrzej Jakowski Signed-off-by: Dan Williams Cc: stable@vger.kernel.org Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_expander.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/libsas/sas_expander.c b/drivers/scsi/libsas/sas_expander.c index 75247a1..caa0525 100644 --- a/drivers/scsi/libsas/sas_expander.c +++ b/drivers/scsi/libsas/sas_expander.c @@ -245,7 +245,14 @@ static void sas_set_ex_phy(struct domain_device *dev, int phy_id, void *rsp) phy->attached_sata_ps = dr->attached_sata_ps; phy->attached_iproto = dr->iproto << 1; phy->attached_tproto = dr->tproto << 1; - memcpy(phy->attached_sas_addr, dr->attached_sas_addr, SAS_ADDR_SIZE); + /* help some expanders that fail to zero sas_address in the 'no + * device' case + */ + if (phy->attached_dev_type == NO_DEVICE || + phy->linkrate < SAS_LINK_RATE_1_5_GBPS) + memset(phy->attached_sas_addr, 0, SAS_ADDR_SIZE); + else + memcpy(phy->attached_sas_addr, dr->attached_sas_addr, SAS_ADDR_SIZE); phy->attached_phy_id = dr->attached_phy_id; phy->phy_change_count = dr->change_count; phy->routing_attr = dr->routing_attr; -- cgit v1.1 From b4698d88585e23d815506f7f38c48192d944b2eb Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 19 Apr 2012 23:48:12 -0700 Subject: [SCSI] Revert "[SCSI] libsas: fix sas port naming" This reverts commit a692b0eec5efae382dfa800e8b4b083f172921a7. Tom reports: [ 8.741033] ------------[ cut here ]------------ [ 8.741038] WARNING: at fs/sysfs/dir.c:508 sysfs_add_one+0xc1/0xf0() [ 8.741040] Hardware name: To Be Filled By O.E.M. [ 8.741041] sysfs: cannot create duplicate filename ...and missing 2 out of 4 drives connected to mvsas. Commit a692b0ee made the assumption that all the phy ids an lldd registers to libsas are unique. However, in the "multi-chip" case mvsas does a rather annoying duplication of phy ids in the array passed to libsas. So, for example, chip0 has phy0-3 at ha phy index 0-3 and chip1 has its phy0-3 at ha phy index 4-7. The more natural model would be to create a scsi_host (and sas_ha) per chip (controller), but for now revert the naming fix which unfortunately means dealing with unpredictable end-device names for a bit longer. Cc: Xiangliang Yu Cc: Patrick Thomson Reported-by: Tom Rini Tested-by: Tom Rini Signed-off-by: Dan Williams Signed-off-by: James Bottomley --- drivers/scsi/libsas/sas_port.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/libsas/sas_port.c b/drivers/scsi/libsas/sas_port.c index 1cf7d75..e884a8c 100644 --- a/drivers/scsi/libsas/sas_port.c +++ b/drivers/scsi/libsas/sas_port.c @@ -123,7 +123,7 @@ static void sas_form_port(struct asd_sas_phy *phy) spin_unlock_irqrestore(&sas_ha->phy_port_lock, flags); if (!port->port) { - port->port = sas_port_alloc(phy->phy->dev.parent, phy->id); + port->port = sas_port_alloc(phy->phy->dev.parent, port->id); BUG_ON(!port->port); sas_port_add(port->port); } -- cgit v1.1 From 5a218ceba7b64f506bf4f004b04bb457c1805a62 Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Wed, 4 Apr 2012 14:11:45 +0300 Subject: HSI: hsi: Rework hsi_controller release Use the proper release mechanism for hsi_controller and hsi_ports structures. Free the structures through their associated device release callbacks. Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- drivers/hsi/hsi.c | 108 +++++++++++++++++++++++++++++------------------- include/linux/hsi/hsi.h | 6 +-- 2 files changed, 69 insertions(+), 45 deletions(-) diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c index 4e2d79b..c17d12c 100644 --- a/drivers/hsi/hsi.c +++ b/drivers/hsi/hsi.c @@ -140,12 +140,17 @@ static int hsi_remove_port(struct device *dev, void *data __maybe_unused) return 0; } -static void hsi_controller_release(struct device *dev __maybe_unused) +static void hsi_controller_release(struct device *dev) { + struct hsi_controller *hsi = to_hsi_controller(dev); + + kfree(hsi->port); + kfree(hsi); } -static void hsi_port_release(struct device *dev __maybe_unused) +static void hsi_port_release(struct device *dev) { + kfree(to_hsi_port(dev)); } /** @@ -172,18 +177,14 @@ int hsi_register_controller(struct hsi_controller *hsi) hsi->device.type = &hsi_ctrl; hsi->device.bus = &hsi_bus_type; - hsi->device.release = hsi_controller_release; - err = device_register(&hsi->device); + err = device_add(&hsi->device); if (err < 0) return err; for (i = 0; i < hsi->num_ports; i++) { - hsi->port[i].device.parent = &hsi->device; - hsi->port[i].device.bus = &hsi_bus_type; - hsi->port[i].device.release = hsi_port_release; - hsi->port[i].device.type = &hsi_port; - INIT_LIST_HEAD(&hsi->port[i].clients); - spin_lock_init(&hsi->port[i].clock); - err = device_register(&hsi->port[i].device); + hsi->port[i]->device.parent = &hsi->device; + hsi->port[i]->device.bus = &hsi_bus_type; + hsi->port[i]->device.type = &hsi_port; + err = device_add(&hsi->port[i]->device); if (err < 0) goto out; } @@ -192,7 +193,9 @@ int hsi_register_controller(struct hsi_controller *hsi) return 0; out: - hsi_unregister_controller(hsi); + while (i-- > 0) + device_del(&hsi->port[i]->device); + device_del(&hsi->device); return err; } @@ -223,6 +226,29 @@ static inline int hsi_dummy_cl(struct hsi_client *cl __maybe_unused) } /** + * hsi_put_controller - Free an HSI controller + * + * @hsi: Pointer to the HSI controller to freed + * + * HSI controller drivers should only use this function if they need + * to free their allocated hsi_controller structures before a successful + * call to hsi_register_controller. Other use is not allowed. + */ +void hsi_put_controller(struct hsi_controller *hsi) +{ + unsigned int i; + + if (!hsi) + return; + + for (i = 0; i < hsi->num_ports; i++) + if (hsi->port && hsi->port[i]) + put_device(&hsi->port[i]->device); + put_device(&hsi->device); +} +EXPORT_SYMBOL_GPL(hsi_put_controller); + +/** * hsi_alloc_controller - Allocate an HSI controller and its ports * @n_ports: Number of ports on the HSI controller * @flags: Kernel allocation flags @@ -232,55 +258,53 @@ static inline int hsi_dummy_cl(struct hsi_client *cl __maybe_unused) struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags) { struct hsi_controller *hsi; - struct hsi_port *port; + struct hsi_port **port; unsigned int i; if (!n_ports) return NULL; - port = kzalloc(sizeof(*port)*n_ports, flags); - if (!port) - return NULL; hsi = kzalloc(sizeof(*hsi), flags); if (!hsi) - goto out; - for (i = 0; i < n_ports; i++) { - dev_set_name(&port[i].device, "port%d", i); - port[i].num = i; - port[i].async = hsi_dummy_msg; - port[i].setup = hsi_dummy_cl; - port[i].flush = hsi_dummy_cl; - port[i].start_tx = hsi_dummy_cl; - port[i].stop_tx = hsi_dummy_cl; - port[i].release = hsi_dummy_cl; - mutex_init(&port[i].lock); + return NULL; + port = kzalloc(sizeof(*port)*n_ports, flags); + if (!port) { + kfree(hsi); + return NULL; } hsi->num_ports = n_ports; hsi->port = port; + hsi->device.release = hsi_controller_release; + device_initialize(&hsi->device); + + for (i = 0; i < n_ports; i++) { + port[i] = kzalloc(sizeof(**port), flags); + if (port[i] == NULL) + goto out; + port[i]->num = i; + port[i]->async = hsi_dummy_msg; + port[i]->setup = hsi_dummy_cl; + port[i]->flush = hsi_dummy_cl; + port[i]->start_tx = hsi_dummy_cl; + port[i]->stop_tx = hsi_dummy_cl; + port[i]->release = hsi_dummy_cl; + mutex_init(&port[i]->lock); + INIT_LIST_HEAD(&hsi->port[i]->clients); + spin_lock_init(&hsi->port[i]->clock); + dev_set_name(&port[i]->device, "port%d", i); + hsi->port[i]->device.release = hsi_port_release; + device_initialize(&hsi->port[i]->device); + } return hsi; out: - kfree(port); + hsi_put_controller(hsi); return NULL; } EXPORT_SYMBOL_GPL(hsi_alloc_controller); /** - * hsi_free_controller - Free an HSI controller - * @hsi: Pointer to HSI controller - */ -void hsi_free_controller(struct hsi_controller *hsi) -{ - if (!hsi) - return; - - kfree(hsi->port); - kfree(hsi); -} -EXPORT_SYMBOL_GPL(hsi_free_controller); - -/** * hsi_free_msg - Free an HSI message * @msg: Pointer to the HSI message * diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h index 4b17806..7f3b726 100644 --- a/include/linux/hsi/hsi.h +++ b/include/linux/hsi/hsi.h @@ -270,13 +270,13 @@ struct hsi_controller { struct module *owner; unsigned int id; unsigned int num_ports; - struct hsi_port *port; + struct hsi_port **port; }; #define to_hsi_controller(dev) container_of(dev, struct hsi_controller, device) struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags); -void hsi_free_controller(struct hsi_controller *hsi); +void hsi_put_controller(struct hsi_controller *hsi); int hsi_register_controller(struct hsi_controller *hsi); void hsi_unregister_controller(struct hsi_controller *hsi); @@ -294,7 +294,7 @@ static inline void *hsi_controller_drvdata(struct hsi_controller *hsi) static inline struct hsi_port *hsi_find_port_num(struct hsi_controller *hsi, unsigned int num) { - return (num < hsi->num_ports) ? &hsi->port[num] : NULL; + return (num < hsi->num_ports) ? hsi->port[num] : NULL; } /* -- cgit v1.1 From 90e41f9dc75b47ab94e2191e4c86aa8259699a33 Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Wed, 11 Apr 2012 11:01:11 +0300 Subject: HSI: hsi: Fix error path cleanup on client registration HSI client structure should be freed on error path after calling device_registration by dropping a reference to it. Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- drivers/hsi/hsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c index c17d12c..5c76a36 100644 --- a/drivers/hsi/hsi.c +++ b/drivers/hsi/hsi.c @@ -100,7 +100,7 @@ static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) cl->device.archdata = *info->archdata; if (device_register(&cl->device) < 0) { pr_err("hsi: failed to register client: %s\n", info->name); - kfree(cl); + put_device(&cl->device); } } -- cgit v1.1 From 6f02b9e9b44a3bfc0046da3ff2707dae0b5e2f30 Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Tue, 10 Apr 2012 15:11:24 +0300 Subject: HSI: hsi: Remove controllers and ports from the bus HSI controllers and ports do not belong to the HSI bus. Those devices are not supposed to have a driver attached to them. Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- drivers/hsi/hsi.c | 20 +------------------- 1 file changed, 1 insertion(+), 19 deletions(-) diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c index 5c76a36..cec1f0c 100644 --- a/drivers/hsi/hsi.c +++ b/drivers/hsi/hsi.c @@ -29,18 +29,6 @@ #include #include "hsi_core.h" -static struct device_type hsi_ctrl = { - .name = "hsi_controller", -}; - -static struct device_type hsi_cl = { - .name = "hsi_client", -}; - -static struct device_type hsi_port = { - .name = "hsi_port", -}; - static ssize_t modalias_show(struct device *dev, struct device_attribute *a __maybe_unused, char *buf) { @@ -54,8 +42,7 @@ static struct device_attribute hsi_bus_dev_attrs[] = { static int hsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { - if (dev->type == &hsi_cl) - add_uevent_var(env, "MODALIAS=hsi:%s", dev_name(dev)); + add_uevent_var(env, "MODALIAS=hsi:%s", dev_name(dev)); return 0; } @@ -85,7 +72,6 @@ static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) cl = kzalloc(sizeof(*cl), GFP_KERNEL); if (!cl) return; - cl->device.type = &hsi_cl; cl->tx_cfg = info->tx_cfg; cl->rx_cfg = info->rx_cfg; cl->device.bus = &hsi_bus_type; @@ -175,15 +161,11 @@ int hsi_register_controller(struct hsi_controller *hsi) unsigned int i; int err; - hsi->device.type = &hsi_ctrl; - hsi->device.bus = &hsi_bus_type; err = device_add(&hsi->device); if (err < 0) return err; for (i = 0; i < hsi->num_ports; i++) { hsi->port[i]->device.parent = &hsi->device; - hsi->port[i]->device.bus = &hsi_bus_type; - hsi->port[i]->device.type = &hsi_port; err = device_add(&hsi->port[i]->device); if (err < 0) goto out; -- cgit v1.1 From ec1c56ff813a198d656d4aa42e5de03e45751bf8 Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Wed, 11 Apr 2012 10:55:53 +0300 Subject: HSI: hsi: Rework hsi_event interface Remove custom hack and make use of the notifier chain interfaces for delivering events from the ports to their associated clients. Clients that want to receive port events need to register their callbacks using hsi_register_port_event(). The callbacks can be called in interrupt context. Use hsi_unregestier_port_event() to undo the registration. Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- drivers/hsi/hsi.c | 101 ++++++++++++++++++++++++++---------------------- include/linux/hsi/hsi.h | 25 ++++++------ 2 files changed, 68 insertions(+), 58 deletions(-) diff --git a/drivers/hsi/hsi.c b/drivers/hsi/hsi.c index cec1f0c..2d58f93 100644 --- a/drivers/hsi/hsi.c +++ b/drivers/hsi/hsi.c @@ -21,12 +21,11 @@ */ #include #include -#include #include -#include #include #include #include +#include #include "hsi_core.h" static ssize_t modalias_show(struct device *dev, @@ -67,7 +66,6 @@ static void hsi_client_release(struct device *dev) static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) { struct hsi_client *cl; - unsigned long flags; cl = kzalloc(sizeof(*cl), GFP_KERNEL); if (!cl) @@ -79,9 +77,6 @@ static void hsi_new_client(struct hsi_port *port, struct hsi_board_info *info) cl->device.release = hsi_client_release; dev_set_name(&cl->device, info->name); cl->device.platform_data = info->platform_data; - spin_lock_irqsave(&port->clock, flags); - list_add_tail(&cl->link, &port->clients); - spin_unlock_irqrestore(&port->clock, flags); if (info->archdata) cl->device.archdata = *info->archdata; if (device_register(&cl->device) < 0) { @@ -106,13 +101,6 @@ static void hsi_scan_board_info(struct hsi_controller *hsi) static int hsi_remove_client(struct device *dev, void *data __maybe_unused) { - struct hsi_client *cl = to_hsi_client(dev); - struct hsi_port *port = to_hsi_port(dev->parent); - unsigned long flags; - - spin_lock_irqsave(&port->clock, flags); - list_del(&cl->link); - spin_unlock_irqrestore(&port->clock, flags); device_unregister(dev); return 0; @@ -271,8 +259,7 @@ struct hsi_controller *hsi_alloc_controller(unsigned int n_ports, gfp_t flags) port[i]->stop_tx = hsi_dummy_cl; port[i]->release = hsi_dummy_cl; mutex_init(&port[i]->lock); - INIT_LIST_HEAD(&hsi->port[i]->clients); - spin_lock_init(&hsi->port[i]->clock); + ATOMIC_INIT_NOTIFIER_HEAD(&port[i]->n_head); dev_set_name(&port[i]->device, "port%d", i); hsi->port[i]->device.release = hsi_port_release; device_initialize(&hsi->port[i]->device); @@ -420,37 +407,67 @@ void hsi_release_port(struct hsi_client *cl) } EXPORT_SYMBOL_GPL(hsi_release_port); -static int hsi_start_rx(struct hsi_client *cl, void *data __maybe_unused) +static int hsi_event_notifier_call(struct notifier_block *nb, + unsigned long event, void *data __maybe_unused) { - if (cl->hsi_start_rx) - (*cl->hsi_start_rx)(cl); + struct hsi_client *cl = container_of(nb, struct hsi_client, nb); + + (*cl->ehandler)(cl, event); return 0; } -static int hsi_stop_rx(struct hsi_client *cl, void *data __maybe_unused) +/** + * hsi_register_port_event - Register a client to receive port events + * @cl: HSI client that wants to receive port events + * @cb: Event handler callback + * + * Clients should register a callback to be able to receive + * events from the ports. Registration should happen after + * claiming the port. + * The handler can be called in interrupt context. + * + * Returns -errno on error, or 0 on success. + */ +int hsi_register_port_event(struct hsi_client *cl, + void (*handler)(struct hsi_client *, unsigned long)) { - if (cl->hsi_stop_rx) - (*cl->hsi_stop_rx)(cl); + struct hsi_port *port = hsi_get_port(cl); - return 0; + if (!handler || cl->ehandler) + return -EINVAL; + if (!hsi_port_claimed(cl)) + return -EACCES; + cl->ehandler = handler; + cl->nb.notifier_call = hsi_event_notifier_call; + + return atomic_notifier_chain_register(&port->n_head, &cl->nb); } +EXPORT_SYMBOL_GPL(hsi_register_port_event); -static int hsi_port_for_each_client(struct hsi_port *port, void *data, - int (*fn)(struct hsi_client *cl, void *data)) +/** + * hsi_unregister_port_event - Stop receiving port events for a client + * @cl: HSI client that wants to stop receiving port events + * + * Clients should call this function before releasing their associated + * port. + * + * Returns -errno on error, or 0 on success. + */ +int hsi_unregister_port_event(struct hsi_client *cl) { - struct hsi_client *cl; + struct hsi_port *port = hsi_get_port(cl); + int err; - spin_lock(&port->clock); - list_for_each_entry(cl, &port->clients, link) { - spin_unlock(&port->clock); - (*fn)(cl, data); - spin_lock(&port->clock); - } - spin_unlock(&port->clock); + WARN_ON(!hsi_port_claimed(cl)); - return 0; + err = atomic_notifier_chain_unregister(&port->n_head, &cl->nb); + if (!err) + cl->ehandler = NULL; + + return err; } +EXPORT_SYMBOL_GPL(hsi_unregister_port_event); /** * hsi_event -Notifies clients about port events @@ -464,22 +481,12 @@ static int hsi_port_for_each_client(struct hsi_port *port, void *data, * Events: * HSI_EVENT_START_RX - Incoming wake line high * HSI_EVENT_STOP_RX - Incoming wake line down + * + * Returns -errno on error, or 0 on success. */ -void hsi_event(struct hsi_port *port, unsigned int event) +int hsi_event(struct hsi_port *port, unsigned long event) { - int (*fn)(struct hsi_client *cl, void *data); - - switch (event) { - case HSI_EVENT_START_RX: - fn = hsi_start_rx; - break; - case HSI_EVENT_STOP_RX: - fn = hsi_stop_rx; - break; - default: - return; - } - hsi_port_for_each_client(port, NULL, fn); + return atomic_notifier_call_chain(&port->n_head, event, NULL); } EXPORT_SYMBOL_GPL(hsi_event); diff --git a/include/linux/hsi/hsi.h b/include/linux/hsi/hsi.h index 7f3b726..56fae86 100644 --- a/include/linux/hsi/hsi.h +++ b/include/linux/hsi/hsi.h @@ -26,9 +26,9 @@ #include #include #include -#include #include #include +#include /* HSI message ttype */ #define HSI_MSG_READ 0 @@ -121,18 +121,18 @@ static inline int hsi_register_board_info(struct hsi_board_info const *info, * @device: Driver model representation of the device * @tx_cfg: HSI TX configuration * @rx_cfg: HSI RX configuration - * @hsi_start_rx: Called after incoming wake line goes high - * @hsi_stop_rx: Called after incoming wake line goes low + * @e_handler: Callback for handling port events (RX Wake High/Low) + * @pclaimed: Keeps tracks if the clients claimed its associated HSI port + * @nb: Notifier block for port events */ struct hsi_client { struct device device; struct hsi_config tx_cfg; struct hsi_config rx_cfg; - void (*hsi_start_rx)(struct hsi_client *cl); - void (*hsi_stop_rx)(struct hsi_client *cl); /* private: */ + void (*ehandler)(struct hsi_client *, unsigned long); unsigned int pclaimed:1; - struct list_head link; + struct notifier_block nb; }; #define to_hsi_client(dev) container_of(dev, struct hsi_client, device) @@ -147,6 +147,10 @@ static inline void *hsi_client_drvdata(struct hsi_client *cl) return dev_get_drvdata(&cl->device); } +int hsi_register_port_event(struct hsi_client *cl, + void (*handler)(struct hsi_client *, unsigned long)); +int hsi_unregister_port_event(struct hsi_client *cl); + /** * struct hsi_client_driver - Driver associated to an HSI client * @driver: Driver model representation of the driver @@ -214,8 +218,7 @@ void hsi_free_msg(struct hsi_msg *msg); * @start_tx: Callback to inform that a client wants to TX data * @stop_tx: Callback to inform that a client no longer wishes to TX data * @release: Callback to inform that a client no longer uses the port - * @clients: List of hsi_clients using the port. - * @clock: Lock to serialize access to the clients list. + * @n_head: Notifier chain for signaling port events to the clients. */ struct hsi_port { struct device device; @@ -231,14 +234,14 @@ struct hsi_port { int (*start_tx)(struct hsi_client *cl); int (*stop_tx)(struct hsi_client *cl); int (*release)(struct hsi_client *cl); - struct list_head clients; - spinlock_t clock; + /* private */ + struct atomic_notifier_head n_head; }; #define to_hsi_port(dev) container_of(dev, struct hsi_port, device) #define hsi_get_port(cl) to_hsi_port((cl)->device.parent) -void hsi_event(struct hsi_port *port, unsigned int event); +int hsi_event(struct hsi_port *port, unsigned long event); int hsi_claim_port(struct hsi_client *cl, unsigned int share); void hsi_release_port(struct hsi_client *cl); -- cgit v1.1 From fdadb6e9a5cf65c7662b2ca817856f187d05ab7d Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Fri, 13 Apr 2012 16:03:03 +0300 Subject: HSI: hsi_char: Remove max_data_size from sysfs Remove max_data_size sysfs entry. Otherwise is possible to have a buffer overrun if its value is increased after the device is open. Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- drivers/hsi/clients/hsi_char.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hsi/clients/hsi_char.c b/drivers/hsi/clients/hsi_char.c index 88a050d..3ad91f6 100644 --- a/drivers/hsi/clients/hsi_char.c +++ b/drivers/hsi/clients/hsi_char.c @@ -123,7 +123,7 @@ struct hsc_client_data { static unsigned int hsc_major; /* Maximum buffer size that hsi_char will accept from userspace */ static unsigned int max_data_size = 0x1000; -module_param(max_data_size, uint, S_IRUSR | S_IWUSR); +module_param(max_data_size, uint, 0); MODULE_PARM_DESC(max_data_size, "max read/write data size [4,8..65536] (^2)"); static void hsc_add_tail(struct hsc_channel *channel, struct hsi_msg *msg, -- cgit v1.1 From 24b7099af71232b7568acd74770e6eb8f174f5d6 Mon Sep 17 00:00:00 2001 From: Carlos Chinea Date: Fri, 13 Apr 2012 15:55:13 +0300 Subject: HSI: Add HSI ABI documentation Adds sysfs HSI framework documentation Signed-off-by: Carlos Chinea Acked-by: Greg Kroah-Hartman Acked-by: Linus Walleij --- Documentation/ABI/testing/sysfs-bus-hsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-hsi diff --git a/Documentation/ABI/testing/sysfs-bus-hsi b/Documentation/ABI/testing/sysfs-bus-hsi new file mode 100644 index 0000000..1b1b282 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-hsi @@ -0,0 +1,19 @@ +What: /sys/bus/hsi +Date: April 2012 +KernelVersion: 3.4 +Contact: Carlos Chinea +Description: + High Speed Synchronous Serial Interface (HSI) is a + serial interface mainly used for connecting application + engines (APE) with cellular modem engines (CMT) in cellular + handsets. + The bus will be populated with devices (hsi_clients) representing + the protocols available in the system. Bus drivers implement + those protocols. + +What: /sys/bus/hsi/devices/.../modalias +Date: April 2012 +KernelVersion: 3.4 +Contact: Carlos Chinea +Description: Stores the same MODALIAS value emitted by uevent + Format: hsi: -- cgit v1.1 From 887ea3db26ec8a43b650ada273e1159492939c10 Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Mon, 23 Apr 2012 19:36:39 +0900 Subject: drm/exynos: fixed duplicatd memory allocation bug. the gem was already allocated at gem allocation time but is allocated at page fault handler so this patch fixes the problem that gem was allocated one more time. Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 12 ------------ 1 file changed, 12 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index 26d5197..b1850c3 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -712,7 +712,6 @@ int exynos_drm_gem_dumb_destroy(struct drm_file *file_priv, int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { struct drm_gem_object *obj = vma->vm_private_data; - struct exynos_drm_gem_obj *exynos_gem_obj = to_exynos_gem_obj(obj); struct drm_device *dev = obj->dev; unsigned long f_vaddr; pgoff_t page_offset; @@ -724,21 +723,10 @@ int exynos_drm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf) mutex_lock(&dev->struct_mutex); - /* - * allocate all pages as desired size if user wants to allocate - * physically non-continuous memory. - */ - if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { - ret = exynos_drm_gem_get_pages(obj); - if (ret < 0) - goto err; - } - ret = exynos_drm_gem_map_pages(obj, vma, f_vaddr, page_offset); if (ret < 0) DRM_ERROR("failed to map pages.\n"); -err: mutex_unlock(&dev->struct_mutex); return convert_to_vm_err_msg(ret); -- cgit v1.1 From f6ead8dea518d0d02c576432eba4fa145e64b02a Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Mon, 23 Apr 2012 19:41:14 +0900 Subject: drm/exynos: fixed exynos_drm_gem_map_pages bug. this patch fixes the problem that the physical memory region to be mapped to user space could be exceeded. if page fault address was placed at between buffer start and end then memory region to be mapped would be exceeded. Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 16 +++------------- 1 file changed, 3 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index b1850c3..f09d292 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -149,22 +149,12 @@ static int exynos_drm_gem_map_pages(struct drm_gem_object *obj, unsigned long pfn; if (exynos_gem_obj->flags & EXYNOS_BO_NONCONTIG) { - unsigned long usize = buf->size; - if (!buf->pages) return -EINTR; - while (usize > 0) { - pfn = page_to_pfn(buf->pages[page_offset++]); - vm_insert_mixed(vma, f_vaddr, pfn); - f_vaddr += PAGE_SIZE; - usize -= PAGE_SIZE; - } - - return 0; - } - - pfn = (buf->dma_addr >> PAGE_SHIFT) + page_offset; + pfn = page_to_pfn(buf->pages[page_offset++]); + } else + pfn = (buf->dma_addr >> PAGE_SHIFT) + page_offset; return vm_insert_mixed(vma, f_vaddr, pfn); } -- cgit v1.1 From 818c4ea7c589c521912430ea54e0c0a0671b2c6d Mon Sep 17 00:00:00 2001 From: Inki Dae Date: Mon, 23 Apr 2012 19:47:18 +0900 Subject: drm/exynos: added missed vm area region mapping type. with this patch, if the memory region is physically non-continuous then VM_MIXEDMAP is set to vm->vm_flags otherwise VM_PFNMAP. we had missed this flag setting. Signed-off-by: Inki Dae Signed-off-by: Kyungmin Park --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c index f09d292..01139c8 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_gem.c +++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c @@ -514,6 +514,8 @@ static int exynos_drm_gem_mmap_buffer(struct file *filp, if (!buffer->pages) return -EINVAL; + vma->vm_flags |= VM_MIXEDMAP; + do { ret = vm_insert_page(vma, uaddr, buffer->pages[i++]); if (ret) { -- cgit v1.1 From 1a38336b8611a04f0a624330c1f815421f4bf5f4 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Thu, 12 Apr 2012 19:47:11 +0100 Subject: ASoC: wm8994: Improve sequencing of AIF channel enables This ensures a clean startup of the channels, without this change some use cases could result in issues in a small proportion of cases. Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/wm8994.c | 276 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 222 insertions(+), 54 deletions(-) diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index 7c49642..6c1fe3a 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -1000,61 +1000,170 @@ static void wm8994_update_class_w(struct snd_soc_codec *codec) } } -static int late_enable_ev(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *kcontrol, int event) +static int aif1clk_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; - struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); + struct wm8994 *control = codec->control_data; + int mask = WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC1R_ENA; + int dac; + int adc; + int val; + + switch (control->type) { + case WM8994: + case WM8958: + mask |= WM8994_AIF1DAC2L_ENA | WM8994_AIF1DAC2R_ENA; + break; + default: + break; + } switch (event) { case SND_SOC_DAPM_PRE_PMU: - if (wm8994->aif1clk_enable) { - snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1, - WM8994_AIF1CLK_ENA_MASK, - WM8994_AIF1CLK_ENA); - wm8994->aif1clk_enable = 0; - } - if (wm8994->aif2clk_enable) { - snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1, - WM8994_AIF2CLK_ENA_MASK, - WM8994_AIF2CLK_ENA); - wm8994->aif2clk_enable = 0; - } + val = snd_soc_read(codec, WM8994_AIF1_CONTROL_1); + if ((val & WM8994_AIF1ADCL_SRC) && + (val & WM8994_AIF1ADCR_SRC)) + adc = WM8994_AIF1ADC1R_ENA | WM8994_AIF1ADC2R_ENA; + else if (!(val & WM8994_AIF1ADCL_SRC) && + !(val & WM8994_AIF1ADCR_SRC)) + adc = WM8994_AIF1ADC1L_ENA | WM8994_AIF1ADC2L_ENA; + else + adc = WM8994_AIF1ADC1R_ENA | WM8994_AIF1ADC2R_ENA | + WM8994_AIF1ADC1L_ENA | WM8994_AIF1ADC2L_ENA; + + val = snd_soc_read(codec, WM8994_AIF1_CONTROL_2); + if ((val & WM8994_AIF1DACL_SRC) && + (val & WM8994_AIF1DACR_SRC)) + dac = WM8994_AIF1DAC1R_ENA | WM8994_AIF1DAC2R_ENA; + else if (!(val & WM8994_AIF1DACL_SRC) && + !(val & WM8994_AIF1DACR_SRC)) + dac = WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC2L_ENA; + else + dac = WM8994_AIF1DAC1R_ENA | WM8994_AIF1DAC2R_ENA | + WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC2L_ENA; + + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_4, + mask, adc); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + mask, dac); + snd_soc_update_bits(codec, WM8994_CLOCKING_1, + WM8994_AIF1DSPCLK_ENA | + WM8994_SYSDSPCLK_ENA, + WM8994_AIF1DSPCLK_ENA | + WM8994_SYSDSPCLK_ENA); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_4, mask, + WM8994_AIF1ADC1R_ENA | + WM8994_AIF1ADC1L_ENA | + WM8994_AIF1ADC2R_ENA | + WM8994_AIF1ADC2L_ENA); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, mask, + WM8994_AIF1DAC1R_ENA | + WM8994_AIF1DAC1L_ENA | + WM8994_AIF1DAC2R_ENA | + WM8994_AIF1DAC2L_ENA); break; - } - /* We may also have postponed startup of DSP, handle that. */ - wm8958_aif_ev(w, kcontrol, event); + case SND_SOC_DAPM_PRE_PMD: + case SND_SOC_DAPM_POST_PMD: + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + mask, 0); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_4, + mask, 0); + + val = snd_soc_read(codec, WM8994_CLOCKING_1); + if (val & WM8994_AIF2DSPCLK_ENA) + val = WM8994_SYSDSPCLK_ENA; + else + val = 0; + snd_soc_update_bits(codec, WM8994_CLOCKING_1, + WM8994_SYSDSPCLK_ENA | + WM8994_AIF1DSPCLK_ENA, val); + break; + } return 0; } -static int late_disable_ev(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *kcontrol, int event) +static int aif2clk_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; - struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); + int dac; + int adc; + int val; switch (event) { + case SND_SOC_DAPM_PRE_PMU: + val = snd_soc_read(codec, WM8994_AIF2_CONTROL_1); + if ((val & WM8994_AIF2ADCL_SRC) && + (val & WM8994_AIF2ADCR_SRC)) + adc = WM8994_AIF2ADCR_ENA; + else if (!(val & WM8994_AIF2ADCL_SRC) && + !(val & WM8994_AIF2ADCR_SRC)) + adc = WM8994_AIF2ADCL_ENA; + else + adc = WM8994_AIF2ADCL_ENA | WM8994_AIF2ADCR_ENA; + + + val = snd_soc_read(codec, WM8994_AIF2_CONTROL_2); + if ((val & WM8994_AIF2DACL_SRC) && + (val & WM8994_AIF2DACR_SRC)) + dac = WM8994_AIF2DACR_ENA; + else if (!(val & WM8994_AIF2DACL_SRC) && + !(val & WM8994_AIF2DACR_SRC)) + dac = WM8994_AIF2DACL_ENA; + else + dac = WM8994_AIF2DACL_ENA | WM8994_AIF2DACR_ENA; + + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_4, + WM8994_AIF2ADCL_ENA | + WM8994_AIF2ADCR_ENA, adc); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + WM8994_AIF2DACL_ENA | + WM8994_AIF2DACR_ENA, dac); + snd_soc_update_bits(codec, WM8994_CLOCKING_1, + WM8994_AIF2DSPCLK_ENA | + WM8994_SYSDSPCLK_ENA, + WM8994_AIF2DSPCLK_ENA | + WM8994_SYSDSPCLK_ENA); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_4, + WM8994_AIF2ADCL_ENA | + WM8994_AIF2ADCR_ENA, + WM8994_AIF2ADCL_ENA | + WM8994_AIF2ADCR_ENA); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + WM8994_AIF2DACL_ENA | + WM8994_AIF2DACR_ENA, + WM8994_AIF2DACL_ENA | + WM8994_AIF2DACR_ENA); + break; + + case SND_SOC_DAPM_PRE_PMD: case SND_SOC_DAPM_POST_PMD: - if (wm8994->aif1clk_disable) { - snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1, - WM8994_AIF1CLK_ENA_MASK, 0); - wm8994->aif1clk_disable = 0; - } - if (wm8994->aif2clk_disable) { - snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1, - WM8994_AIF2CLK_ENA_MASK, 0); - wm8994->aif2clk_disable = 0; - } + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + WM8994_AIF2DACL_ENA | + WM8994_AIF2DACR_ENA, 0); + snd_soc_update_bits(codec, WM8994_POWER_MANAGEMENT_5, + WM8994_AIF2ADCL_ENA | + WM8994_AIF2ADCR_ENA, 0); + + val = snd_soc_read(codec, WM8994_CLOCKING_1); + if (val & WM8994_AIF1DSPCLK_ENA) + val = WM8994_SYSDSPCLK_ENA; + else + val = 0; + snd_soc_update_bits(codec, WM8994_CLOCKING_1, + WM8994_SYSDSPCLK_ENA | + WM8994_AIF2DSPCLK_ENA, val); break; } return 0; } -static int aif1clk_ev(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *kcontrol, int event) +static int aif1clk_late_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); @@ -1071,8 +1180,8 @@ static int aif1clk_ev(struct snd_soc_dapm_widget *w, return 0; } -static int aif2clk_ev(struct snd_soc_dapm_widget *w, - struct snd_kcontrol *kcontrol, int event) +static int aif2clk_late_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); @@ -1089,6 +1198,63 @@ static int aif2clk_ev(struct snd_soc_dapm_widget *w, return 0; } +static int late_enable_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = w->codec; + struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + if (wm8994->aif1clk_enable) { + aif1clk_ev(w, kcontrol, event); + snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1, + WM8994_AIF1CLK_ENA_MASK, + WM8994_AIF1CLK_ENA); + wm8994->aif1clk_enable = 0; + } + if (wm8994->aif2clk_enable) { + aif2clk_ev(w, kcontrol, event); + snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1, + WM8994_AIF2CLK_ENA_MASK, + WM8994_AIF2CLK_ENA); + wm8994->aif2clk_enable = 0; + } + break; + } + + /* We may also have postponed startup of DSP, handle that. */ + wm8958_aif_ev(w, kcontrol, event); + + return 0; +} + +static int late_disable_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = w->codec; + struct wm8994_priv *wm8994 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_POST_PMD: + if (wm8994->aif1clk_disable) { + snd_soc_update_bits(codec, WM8994_AIF1_CLOCKING_1, + WM8994_AIF1CLK_ENA_MASK, 0); + aif1clk_ev(w, kcontrol, event); + wm8994->aif1clk_disable = 0; + } + if (wm8994->aif2clk_disable) { + snd_soc_update_bits(codec, WM8994_AIF2_CLOCKING_1, + WM8994_AIF2CLK_ENA_MASK, 0); + aif2clk_ev(w, kcontrol, event); + wm8994->aif2clk_disable = 0; + } + break; + } + + return 0; +} + static int adc_mux_ev(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { @@ -1385,9 +1551,9 @@ static const struct snd_kcontrol_new aif2dacr_src_mux = SOC_DAPM_ENUM("AIF2DACR Mux", aif2dacr_src_enum); static const struct snd_soc_dapm_widget wm8994_lateclk_revd_widgets[] = { -SND_SOC_DAPM_SUPPLY("AIF1CLK", SND_SOC_NOPM, 0, 0, aif1clk_ev, +SND_SOC_DAPM_SUPPLY("AIF1CLK", SND_SOC_NOPM, 0, 0, aif1clk_late_ev, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), -SND_SOC_DAPM_SUPPLY("AIF2CLK", SND_SOC_NOPM, 0, 0, aif2clk_ev, +SND_SOC_DAPM_SUPPLY("AIF2CLK", SND_SOC_NOPM, 0, 0, aif2clk_late_ev, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_PGA_E("Late DAC1L Enable PGA", SND_SOC_NOPM, 0, 0, NULL, 0, @@ -1416,8 +1582,10 @@ SND_SOC_DAPM_POST("Late Disable PGA", late_disable_ev) }; static const struct snd_soc_dapm_widget wm8994_lateclk_widgets[] = { -SND_SOC_DAPM_SUPPLY("AIF1CLK", WM8994_AIF1_CLOCKING_1, 0, 0, NULL, 0), -SND_SOC_DAPM_SUPPLY("AIF2CLK", WM8994_AIF2_CLOCKING_1, 0, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("AIF1CLK", WM8994_AIF1_CLOCKING_1, 0, 0, aif1clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD), +SND_SOC_DAPM_SUPPLY("AIF2CLK", WM8994_AIF2_CLOCKING_1, 0, 0, aif2clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_PGA("Direct Voice", SND_SOC_NOPM, 0, 0, NULL, 0), SND_SOC_DAPM_MIXER("SPKL", WM8994_POWER_MANAGEMENT_3, 8, 0, left_speaker_mixer, ARRAY_SIZE(left_speaker_mixer)), @@ -1470,30 +1638,30 @@ SND_SOC_DAPM_SUPPLY("VMID", SND_SOC_NOPM, 0, 0, vmid_event, SND_SOC_DAPM_SUPPLY("CLK_SYS", SND_SOC_NOPM, 0, 0, clk_sys_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), -SND_SOC_DAPM_SUPPLY("DSP1CLK", WM8994_CLOCKING_1, 3, 0, NULL, 0), -SND_SOC_DAPM_SUPPLY("DSP2CLK", WM8994_CLOCKING_1, 2, 0, NULL, 0), -SND_SOC_DAPM_SUPPLY("DSPINTCLK", WM8994_CLOCKING_1, 1, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("DSP1CLK", SND_SOC_NOPM, 3, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("DSP2CLK", SND_SOC_NOPM, 2, 0, NULL, 0), +SND_SOC_DAPM_SUPPLY("DSPINTCLK", SND_SOC_NOPM, 1, 0, NULL, 0), SND_SOC_DAPM_AIF_OUT("AIF1ADC1L", NULL, - 0, WM8994_POWER_MANAGEMENT_4, 9, 0), + 0, SND_SOC_NOPM, 9, 0), SND_SOC_DAPM_AIF_OUT("AIF1ADC1R", NULL, - 0, WM8994_POWER_MANAGEMENT_4, 8, 0), + 0, SND_SOC_NOPM, 8, 0), SND_SOC_DAPM_AIF_IN_E("AIF1DAC1L", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 9, 0, wm8958_aif_ev, + SND_SOC_NOPM, 9, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_AIF_IN_E("AIF1DAC1R", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 8, 0, wm8958_aif_ev, + SND_SOC_NOPM, 8, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_AIF_OUT("AIF1ADC2L", NULL, - 0, WM8994_POWER_MANAGEMENT_4, 11, 0), + 0, SND_SOC_NOPM, 11, 0), SND_SOC_DAPM_AIF_OUT("AIF1ADC2R", NULL, - 0, WM8994_POWER_MANAGEMENT_4, 10, 0), + 0, SND_SOC_NOPM, 10, 0), SND_SOC_DAPM_AIF_IN_E("AIF1DAC2L", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 11, 0, wm8958_aif_ev, + SND_SOC_NOPM, 11, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_AIF_IN_E("AIF1DAC2R", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 10, 0, wm8958_aif_ev, + SND_SOC_NOPM, 10, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_MIXER("AIF1ADC1L Mixer", SND_SOC_NOPM, 0, 0, @@ -1520,14 +1688,14 @@ SND_SOC_DAPM_MIXER("DAC1R Mixer", SND_SOC_NOPM, 0, 0, dac1r_mix, ARRAY_SIZE(dac1r_mix)), SND_SOC_DAPM_AIF_OUT("AIF2ADCL", NULL, 0, - WM8994_POWER_MANAGEMENT_4, 13, 0), + SND_SOC_NOPM, 13, 0), SND_SOC_DAPM_AIF_OUT("AIF2ADCR", NULL, 0, - WM8994_POWER_MANAGEMENT_4, 12, 0), + SND_SOC_NOPM, 12, 0), SND_SOC_DAPM_AIF_IN_E("AIF2DACL", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 13, 0, wm8958_aif_ev, + SND_SOC_NOPM, 13, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_AIF_IN_E("AIF2DACR", NULL, 0, - WM8994_POWER_MANAGEMENT_5, 12, 0, wm8958_aif_ev, + SND_SOC_NOPM, 12, 0, wm8958_aif_ev, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_AIF_IN("AIF1DACDAT", NULL, 0, SND_SOC_NOPM, 0, 0), -- cgit v1.1 From 1bdae6f49c52af3a58998cdb051dbd5b942f9273 Mon Sep 17 00:00:00 2001 From: Narayanan G Date: Thu, 9 Feb 2012 12:41:37 +0530 Subject: dma40: Improve the logic of stopping logical chan can be directly stopped by issuing a SUSPEND_REQ on the EE bits. There is no need to suspend the physical channel and restart it. Also, the support for pre-V2 hw is discontinued. EE bits for writing: 00: disable only if AS=11 or AS=00 01: enable 10: suspend_req only if AS=01 & EE=01 or EE=11 11: round / no change for writing Signed-off-by: Narayanan G Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- drivers/dma/ste_dma40.c | 320 ++++++++++++++++++++++++++++----------------- drivers/dma/ste_dma40_ll.h | 2 - 2 files changed, 199 insertions(+), 123 deletions(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index bdd41d4..c5f26cc 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -69,6 +69,22 @@ enum d40_command { }; /* + * enum d40_events - The different Event Enables for the event lines. + * + * @D40_DEACTIVATE_EVENTLINE: De-activate Event line, stopping the logical chan. + * @D40_ACTIVATE_EVENTLINE: Activate the Event line, to start a logical chan. + * @D40_SUSPEND_REQ_EVENTLINE: Requesting for suspending a event line. + * @D40_ROUND_EVENTLINE: Status check for event line. + */ + +enum d40_events { + D40_DEACTIVATE_EVENTLINE = 0, + D40_ACTIVATE_EVENTLINE = 1, + D40_SUSPEND_REQ_EVENTLINE = 2, + D40_ROUND_EVENTLINE = 3 +}; + +/* * These are the registers that has to be saved and later restored * when the DMA hw is powered off. * TODO: Add save/restore of D40_DREG_GCC on dma40 v3 or later, if that works. @@ -870,8 +886,8 @@ static void d40_save_restore_registers(struct d40_base *base, bool save) } #endif -static int d40_channel_execute_command(struct d40_chan *d40c, - enum d40_command command) +static int __d40_execute_command_phy(struct d40_chan *d40c, + enum d40_command command) { u32 status; int i; @@ -880,6 +896,12 @@ static int d40_channel_execute_command(struct d40_chan *d40c, unsigned long flags; u32 wmask; + if (command == D40_DMA_STOP) { + ret = __d40_execute_command_phy(d40c, D40_DMA_SUSPEND_REQ); + if (ret) + return ret; + } + spin_lock_irqsave(&d40c->base->execmd_lock, flags); if (d40c->phy_chan->num % 2 == 0) @@ -973,67 +995,109 @@ static void d40_term_all(struct d40_chan *d40c) } d40c->pending_tx = 0; - d40c->busy = false; } -static void __d40_config_set_event(struct d40_chan *d40c, bool enable, - u32 event, int reg) +static void __d40_config_set_event(struct d40_chan *d40c, + enum d40_events event_type, u32 event, + int reg) { void __iomem *addr = chan_base(d40c) + reg; int tries; + u32 status; + + switch (event_type) { + + case D40_DEACTIVATE_EVENTLINE: - if (!enable) { writel((D40_DEACTIVATE_EVENTLINE << D40_EVENTLINE_POS(event)) | ~D40_EVENTLINE_MASK(event), addr); - return; - } + break; + + case D40_SUSPEND_REQ_EVENTLINE: + status = (readl(addr) & D40_EVENTLINE_MASK(event)) >> + D40_EVENTLINE_POS(event); + + if (status == D40_DEACTIVATE_EVENTLINE || + status == D40_SUSPEND_REQ_EVENTLINE) + break; + writel((D40_SUSPEND_REQ_EVENTLINE << D40_EVENTLINE_POS(event)) + | ~D40_EVENTLINE_MASK(event), addr); + + for (tries = 0 ; tries < D40_SUSPEND_MAX_IT; tries++) { + + status = (readl(addr) & D40_EVENTLINE_MASK(event)) >> + D40_EVENTLINE_POS(event); + + cpu_relax(); + /* + * Reduce the number of bus accesses while + * waiting for the DMA to suspend. + */ + udelay(3); + + if (status == D40_DEACTIVATE_EVENTLINE) + break; + } + + if (tries == D40_SUSPEND_MAX_IT) { + chan_err(d40c, + "unable to stop the event_line chl %d (log: %d)" + "status %x\n", d40c->phy_chan->num, + d40c->log_num, status); + } + break; + + case D40_ACTIVATE_EVENTLINE: /* * The hardware sometimes doesn't register the enable when src and dst * event lines are active on the same logical channel. Retry to ensure * it does. Usually only one retry is sufficient. */ - tries = 100; - while (--tries) { - writel((D40_ACTIVATE_EVENTLINE << D40_EVENTLINE_POS(event)) - | ~D40_EVENTLINE_MASK(event), addr); + tries = 100; + while (--tries) { + writel((D40_ACTIVATE_EVENTLINE << + D40_EVENTLINE_POS(event)) | + ~D40_EVENTLINE_MASK(event), addr); - if (readl(addr) & D40_EVENTLINE_MASK(event)) - break; - } + if (readl(addr) & D40_EVENTLINE_MASK(event)) + break; + } - if (tries != 99) - dev_dbg(chan2dev(d40c), - "[%s] workaround enable S%cLNK (%d tries)\n", - __func__, reg == D40_CHAN_REG_SSLNK ? 'S' : 'D', - 100 - tries); + if (tries != 99) + dev_dbg(chan2dev(d40c), + "[%s] workaround enable S%cLNK (%d tries)\n", + __func__, reg == D40_CHAN_REG_SSLNK ? 'S' : 'D', + 100 - tries); - WARN_ON(!tries); -} + WARN_ON(!tries); + break; -static void d40_config_set_event(struct d40_chan *d40c, bool do_enable) -{ - unsigned long flags; + case D40_ROUND_EVENTLINE: + BUG(); + break; - spin_lock_irqsave(&d40c->phy_chan->lock, flags); + } +} +static void d40_config_set_event(struct d40_chan *d40c, + enum d40_events event_type) +{ /* Enable event line connected to device (or memcpy) */ if ((d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_MEM) || (d40c->dma_cfg.dir == STEDMA40_PERIPH_TO_PERIPH)) { u32 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.src_dev_type); - __d40_config_set_event(d40c, do_enable, event, + __d40_config_set_event(d40c, event_type, event, D40_CHAN_REG_SSLNK); } if (d40c->dma_cfg.dir != STEDMA40_PERIPH_TO_MEM) { u32 event = D40_TYPE_TO_EVENT(d40c->dma_cfg.dst_dev_type); - __d40_config_set_event(d40c, do_enable, event, + __d40_config_set_event(d40c, event_type, event, D40_CHAN_REG_SDLNK); } - - spin_unlock_irqrestore(&d40c->phy_chan->lock, flags); } static u32 d40_chan_has_events(struct d40_chan *d40c) @@ -1047,6 +1111,64 @@ static u32 d40_chan_has_events(struct d40_chan *d40c) return val; } +static int +__d40_execute_command_log(struct d40_chan *d40c, enum d40_command command) +{ + unsigned long flags; + int ret = 0; + u32 active_status; + void __iomem *active_reg; + + if (d40c->phy_chan->num % 2 == 0) + active_reg = d40c->base->virtbase + D40_DREG_ACTIVE; + else + active_reg = d40c->base->virtbase + D40_DREG_ACTIVO; + + + spin_lock_irqsave(&d40c->phy_chan->lock, flags); + + switch (command) { + case D40_DMA_STOP: + case D40_DMA_SUSPEND_REQ: + + active_status = (readl(active_reg) & + D40_CHAN_POS_MASK(d40c->phy_chan->num)) >> + D40_CHAN_POS(d40c->phy_chan->num); + + if (active_status == D40_DMA_RUN) + d40_config_set_event(d40c, D40_SUSPEND_REQ_EVENTLINE); + else + d40_config_set_event(d40c, D40_DEACTIVATE_EVENTLINE); + + if (!d40_chan_has_events(d40c) && (command == D40_DMA_STOP)) + ret = __d40_execute_command_phy(d40c, command); + + break; + + case D40_DMA_RUN: + + d40_config_set_event(d40c, D40_ACTIVATE_EVENTLINE); + ret = __d40_execute_command_phy(d40c, command); + break; + + case D40_DMA_SUSPENDED: + BUG(); + break; + } + + spin_unlock_irqrestore(&d40c->phy_chan->lock, flags); + return ret; +} + +static int d40_channel_execute_command(struct d40_chan *d40c, + enum d40_command command) +{ + if (chan_is_logical(d40c)) + return __d40_execute_command_log(d40c, command); + else + return __d40_execute_command_phy(d40c, command); +} + static u32 d40_get_prmo(struct d40_chan *d40c) { static const unsigned int phy_map[] = { @@ -1149,15 +1271,7 @@ static int d40_pause(struct d40_chan *d40c) spin_lock_irqsave(&d40c->lock, flags); res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ); - if (res == 0) { - if (chan_is_logical(d40c)) { - d40_config_set_event(d40c, false); - /* Resume the other logical channels if any */ - if (d40_chan_has_events(d40c)) - res = d40_channel_execute_command(d40c, - D40_DMA_RUN); - } - } + pm_runtime_mark_last_busy(d40c->base->dev); pm_runtime_put_autosuspend(d40c->base->dev); spin_unlock_irqrestore(&d40c->lock, flags); @@ -1174,45 +1288,17 @@ static int d40_resume(struct d40_chan *d40c) spin_lock_irqsave(&d40c->lock, flags); pm_runtime_get_sync(d40c->base->dev); - if (d40c->base->rev == 0) - if (chan_is_logical(d40c)) { - res = d40_channel_execute_command(d40c, - D40_DMA_SUSPEND_REQ); - goto no_suspend; - } /* If bytes left to transfer or linked tx resume job */ - if (d40_residue(d40c) || d40_tx_is_linked(d40c)) { - - if (chan_is_logical(d40c)) - d40_config_set_event(d40c, true); - + if (d40_residue(d40c) || d40_tx_is_linked(d40c)) res = d40_channel_execute_command(d40c, D40_DMA_RUN); - } -no_suspend: pm_runtime_mark_last_busy(d40c->base->dev); pm_runtime_put_autosuspend(d40c->base->dev); spin_unlock_irqrestore(&d40c->lock, flags); return res; } -static int d40_terminate_all(struct d40_chan *chan) -{ - unsigned long flags; - int ret = 0; - - ret = d40_pause(chan); - if (!ret && chan_is_physical(chan)) - ret = d40_channel_execute_command(chan, D40_DMA_STOP); - - spin_lock_irqsave(&chan->lock, flags); - d40_term_all(chan); - spin_unlock_irqrestore(&chan->lock, flags); - - return ret; -} - static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx) { struct d40_chan *d40c = container_of(tx->chan, @@ -1232,20 +1318,6 @@ static dma_cookie_t d40_tx_submit(struct dma_async_tx_descriptor *tx) static int d40_start(struct d40_chan *d40c) { - if (d40c->base->rev == 0) { - int err; - - if (chan_is_logical(d40c)) { - err = d40_channel_execute_command(d40c, - D40_DMA_SUSPEND_REQ); - if (err) - return err; - } - } - - if (chan_is_logical(d40c)) - d40_config_set_event(d40c, true); - return d40_channel_execute_command(d40c, D40_DMA_RUN); } @@ -1258,10 +1330,10 @@ static struct d40_desc *d40_queue_start(struct d40_chan *d40c) d40d = d40_first_queued(d40c); if (d40d != NULL) { - if (!d40c->busy) + if (!d40c->busy) { d40c->busy = true; - - pm_runtime_get_sync(d40c->base->dev); + pm_runtime_get_sync(d40c->base->dev); + } /* Remove from queue */ d40_desc_remove(d40d); @@ -1388,8 +1460,8 @@ static void dma_tasklet(unsigned long data) return; - err: - /* Rescue manoeuvre if receiving double interrupts */ +err: + /* Rescue manouver if receiving double interrupts */ if (d40c->pending_tx > 0) d40c->pending_tx--; spin_unlock_irqrestore(&d40c->lock, flags); @@ -1770,7 +1842,6 @@ static int d40_config_memcpy(struct d40_chan *d40c) return 0; } - static int d40_free_dma(struct d40_chan *d40c) { @@ -1806,43 +1877,18 @@ static int d40_free_dma(struct d40_chan *d40c) } pm_runtime_get_sync(d40c->base->dev); - res = d40_channel_execute_command(d40c, D40_DMA_SUSPEND_REQ); + res = d40_channel_execute_command(d40c, D40_DMA_STOP); if (res) { - chan_err(d40c, "suspend failed\n"); + chan_err(d40c, "stop failed\n"); goto out; } - if (chan_is_logical(d40c)) { - /* Release logical channel, deactivate the event line */ + d40_alloc_mask_free(phy, is_src, chan_is_logical(d40c) ? event : 0); - d40_config_set_event(d40c, false); + if (chan_is_logical(d40c)) d40c->base->lookup_log_chans[d40c->log_num] = NULL; - - /* - * Check if there are more logical allocation - * on this phy channel. - */ - if (!d40_alloc_mask_free(phy, is_src, event)) { - /* Resume the other logical channels if any */ - if (d40_chan_has_events(d40c)) { - res = d40_channel_execute_command(d40c, - D40_DMA_RUN); - if (res) - chan_err(d40c, - "Executing RUN command\n"); - } - goto out; - } - } else { - (void) d40_alloc_mask_free(phy, is_src, 0); - } - - /* Release physical channel */ - res = d40_channel_execute_command(d40c, D40_DMA_STOP); - if (res) { - chan_err(d40c, "Failed to stop channel\n"); - goto out; - } + else + d40c->base->lookup_phy_chans[phy->num] = NULL; if (d40c->busy) { pm_runtime_mark_last_busy(d40c->base->dev); @@ -1852,7 +1898,6 @@ static int d40_free_dma(struct d40_chan *d40c) d40c->busy = false; d40c->phy_chan = NULL; d40c->configured = false; - d40c->base->lookup_phy_chans[phy->num] = NULL; out: pm_runtime_mark_last_busy(d40c->base->dev); @@ -2371,6 +2416,31 @@ static void d40_issue_pending(struct dma_chan *chan) spin_unlock_irqrestore(&d40c->lock, flags); } +static void d40_terminate_all(struct dma_chan *chan) +{ + unsigned long flags; + struct d40_chan *d40c = container_of(chan, struct d40_chan, chan); + int ret; + + spin_lock_irqsave(&d40c->lock, flags); + + pm_runtime_get_sync(d40c->base->dev); + ret = d40_channel_execute_command(d40c, D40_DMA_STOP); + if (ret) + chan_err(d40c, "Failed to stop channel\n"); + + d40_term_all(d40c); + pm_runtime_mark_last_busy(d40c->base->dev); + pm_runtime_put_autosuspend(d40c->base->dev); + if (d40c->busy) { + pm_runtime_mark_last_busy(d40c->base->dev); + pm_runtime_put_autosuspend(d40c->base->dev); + } + d40c->busy = false; + + spin_unlock_irqrestore(&d40c->lock, flags); +} + static int dma40_config_to_halfchannel(struct d40_chan *d40c, struct stedma40_half_channel_info *info, @@ -2551,7 +2621,8 @@ static int d40_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, switch (cmd) { case DMA_TERMINATE_ALL: - return d40_terminate_all(d40c); + d40_terminate_all(chan); + return 0; case DMA_PAUSE: return d40_pause(d40c); case DMA_RESUME: @@ -2908,6 +2979,12 @@ static struct d40_base * __init d40_hw_detect_init(struct platform_device *pdev) dev_info(&pdev->dev, "hardware revision: %d @ 0x%x\n", rev, res->start); + if (rev < 2) { + d40_err(&pdev->dev, "hardware revision: %d is not supported", + rev); + goto failure; + } + plat_data = pdev->dev.platform_data; /* Count the number of logical channels in use */ @@ -2998,6 +3075,7 @@ failure: if (base) { kfree(base->lcla_pool.alloc_map); + kfree(base->reg_val_backup_chan); kfree(base->lookup_log_chans); kfree(base->lookup_phy_chans); kfree(base->phy_res); diff --git a/drivers/dma/ste_dma40_ll.h b/drivers/dma/ste_dma40_ll.h index 8d3d490..51e8e53 100644 --- a/drivers/dma/ste_dma40_ll.h +++ b/drivers/dma/ste_dma40_ll.h @@ -62,8 +62,6 @@ #define D40_SREG_ELEM_LOG_LIDX_MASK (0xFF << D40_SREG_ELEM_LOG_LIDX_POS) /* Link register */ -#define D40_DEACTIVATE_EVENTLINE 0x0 -#define D40_ACTIVATE_EVENTLINE 0x1 #define D40_EVENTLINE_POS(i) (2 * i) #define D40_EVENTLINE_MASK(i) (0x3 << D40_EVENTLINE_POS(i)) -- cgit v1.1 From 15e4b78d7338a41b020d29dab7ac13a234ebe833 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 12 Apr 2012 18:12:43 +0200 Subject: dma/ste_dma40: explicitly include regulator consumer header The patch "ARM: amba: Remove AMBA level regulator support" breaks the DMA40 driver since the header implicitly included the regulator consumer header. So include it explicitly and fix the build error. Cc: Mark Brown Signed-off-by: Linus Walleij Signed-off-by: Vinod Koul --- drivers/dma/ste_dma40.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index c5f26cc..9417042 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -18,6 +18,7 @@ #include #include #include +#include #include -- cgit v1.1 From 7e426da823fc7cd428b82ff2cf3615da24c73352 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 12 Apr 2012 18:12:52 +0200 Subject: dma/ste_dma40: fix erroneous comparison A small fallout from Vinod's conversions to dma_transfer_direction, this small comparison was done with a dma_data_direction instead. Fix it by comparing against the correct enum. Signed-off-by: Linus Walleij Signed-off-by: Vinod Koul --- drivers/dma/ste_dma40.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c index 9417042..2ed1ac3 100644 --- a/drivers/dma/ste_dma40.c +++ b/drivers/dma/ste_dma40.c @@ -2116,7 +2116,7 @@ d40_prep_sg(struct dma_chan *dchan, struct scatterlist *sg_src, if (sg_next(&sg_src[sg_len - 1]) == sg_src) desc->cyclic = true; - if (direction != DMA_NONE) { + if (direction != DMA_TRANS_NONE) { dma_addr_t dev_addr = d40_get_dev_addr(chan, direction); if (direction == DMA_DEV_TO_MEM) -- cgit v1.1 From f0c4b8d653f5ee091fb8d4d02ed7eaad397491bb Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 20 Apr 2012 17:20:08 +0100 Subject: ARM: 7396/1: errata: only handle ARM erratum #326103 on affected cores Erratum #326103 ("FSR write bit incorrect on a SWP to read-only memory") only affects the ARM 1136 core prior to r1p0. The workaround disassembles the faulting instruction to determine whether it was a read or write access on all v6 cores. An issue has been reported on the ARM 11MPCore whereby loading the faulting instruction may happen in parallel with that page being unmapped, resulting in a deadlock due to the lack of TLB broadcasting in hardware: http://lists.infradead.org/pipermail/linux-arm-kernel/2012-March/091561.html This patch limits the workaround so that it is only used on affected cores, which are known to be UP only. Other v6 cores can rely on the FSR to indicate the access type correctly. Cc: stable@vger.kernel.org Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/Kconfig | 9 +++++++++ arch/arm/mm/abort-ev6.S | 17 +++++++++++------ 2 files changed, 20 insertions(+), 6 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index cf006d4..36586dba 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1186,6 +1186,15 @@ if !MMU source "arch/arm/Kconfig-nommu" endif +config ARM_ERRATA_326103 + bool "ARM errata: FSR write bit incorrect on a SWP to read-only memory" + depends on CPU_V6 + help + Executing a SWP instruction to read-only memory does not set bit 11 + of the FSR on the ARM 1136 prior to r1p0. This causes the kernel to + treat the access as a read, preventing a COW from occurring and + causing the faulting task to livelock. + config ARM_ERRATA_411920 bool "ARM errata: Invalidation of the Instruction Cache operation can fail" depends on CPU_V6 || CPU_V6K diff --git a/arch/arm/mm/abort-ev6.S b/arch/arm/mm/abort-ev6.S index ff1f7cc..8074199 100644 --- a/arch/arm/mm/abort-ev6.S +++ b/arch/arm/mm/abort-ev6.S @@ -26,18 +26,23 @@ ENTRY(v6_early_abort) mrc p15, 0, r1, c5, c0, 0 @ get FSR mrc p15, 0, r0, c6, c0, 0 @ get FAR /* - * Faulty SWP instruction on 1136 doesn't set bit 11 in DFSR (erratum 326103). - * The test below covers all the write situations, including Java bytecodes + * Faulty SWP instruction on 1136 doesn't set bit 11 in DFSR. */ - bic r1, r1, #1 << 11 @ clear bit 11 of FSR +#ifdef CONFIG_ARM_ERRATA_326103 + ldr ip, =0x4107b36 + mrc p15, 0, r3, c0, c0, 0 @ get processor id + teq ip, r3, lsr #4 @ r0 ARM1136? + bne do_DataAbort tst r5, #PSR_J_BIT @ Java? + tsteq r5, #PSR_T_BIT @ Thumb? bne do_DataAbort - do_thumb_abort fsr=r1, pc=r4, psr=r5, tmp=r3 - ldreq r3, [r4] @ read aborted ARM instruction + bic r1, r1, #1 << 11 @ clear bit 11 of FSR + ldr r3, [r4] @ read aborted ARM instruction #ifdef CONFIG_CPU_ENDIAN_BE8 - reveq r3, r3 + rev r3, r3 #endif do_ldrd_abort tmp=ip, insn=r3 tst r3, #1 << 20 @ L = 0 -> write orreq r1, r1, #1 << 11 @ yes. +#endif b do_DataAbort -- cgit v1.1 From f154fe9b806574437b47f08e924ad10c0e240b23 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 20 Apr 2012 17:21:08 +0100 Subject: ARM: 7397/1: l2x0: only apply workaround for erratum #753970 on PL310 The workaround for PL310 erratum #753970 can lead to deadlock on systems with an L220 cache controller. This patch makes the workaround effective only when the cache controller is identified as a PL310 at probe time. Cc: stable@vger.kernel.org Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/mm/cache-l2x0.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index a53fd2a..a8d02c0 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -32,6 +32,7 @@ static void __iomem *l2x0_base; static DEFINE_RAW_SPINLOCK(l2x0_lock); static u32 l2x0_way_mask; /* Bitmask of active ways */ static u32 l2x0_size; +static unsigned long sync_reg_offset = L2X0_CACHE_SYNC; struct l2x0_regs l2x0_saved_regs; @@ -61,12 +62,7 @@ static inline void cache_sync(void) { void __iomem *base = l2x0_base; -#ifdef CONFIG_PL310_ERRATA_753970 - /* write to an unmmapped register */ - writel_relaxed(0, base + L2X0_DUMMY_REG); -#else - writel_relaxed(0, base + L2X0_CACHE_SYNC); -#endif + writel_relaxed(0, base + sync_reg_offset); cache_wait(base + L2X0_CACHE_SYNC, 1); } @@ -331,6 +327,10 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask) else ways = 8; type = "L310"; +#ifdef CONFIG_PL310_ERRATA_753970 + /* Unmapped register. */ + sync_reg_offset = L2X0_DUMMY_REG; +#endif break; case L2X0_CACHE_ID_PART_L210: ways = (aux >> 13) & 0xf; -- cgit v1.1 From ab4d536890853ab6675ede65db40e2c0980cb0ea Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 20 Apr 2012 17:22:11 +0100 Subject: ARM: 7398/1: l2x0: only write to debug registers on PL310 PL310 errata #588369 and #727915 require writes to the debug registers of the cache controller to work around known problems. Writing these registers on L220 may cause deadlock, so ensure that we only perform this operation when we identify a PL310 at probe time. Cc: stable@vger.kernel.org Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/mm/cache-l2x0.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index a8d02c0..2a8e380 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -81,10 +81,13 @@ static inline void l2x0_inv_line(unsigned long addr) } #if defined(CONFIG_PL310_ERRATA_588369) || defined(CONFIG_PL310_ERRATA_727915) +static inline void debug_writel(unsigned long val) +{ + if (outer_cache.set_debug) + outer_cache.set_debug(val); +} -#define debug_writel(val) outer_cache.set_debug(val) - -static void l2x0_set_debug(unsigned long val) +static void pl310_set_debug(unsigned long val) { writel_relaxed(val, l2x0_base + L2X0_DEBUG_CTRL); } @@ -94,7 +97,7 @@ static inline void debug_writel(unsigned long val) { } -#define l2x0_set_debug NULL +#define pl310_set_debug NULL #endif #ifdef CONFIG_PL310_ERRATA_588369 @@ -331,6 +334,7 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask) /* Unmapped register. */ sync_reg_offset = L2X0_DUMMY_REG; #endif + outer_cache.set_debug = pl310_set_debug; break; case L2X0_CACHE_ID_PART_L210: ways = (aux >> 13) & 0xf; @@ -379,7 +383,6 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask) outer_cache.flush_all = l2x0_flush_all; outer_cache.inv_all = l2x0_inv_all; outer_cache.disable = l2x0_disable; - outer_cache.set_debug = l2x0_set_debug; printk(KERN_INFO "%s cache controller enabled\n", type); printk(KERN_INFO "l2x0: %d ways, CACHE_ID 0x%08x, AUX_CTRL 0x%08x, Cache size: %d B\n", -- cgit v1.1 From 2498814fcb3068f19b82b1519b4038721f61af43 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 23 Apr 2012 15:38:28 +0100 Subject: ARM: 7399/1: vfp: move user vfp state save/restore code out of signal.c The user VFP state must be preserved (subject to ucontext modifications) across invocation of a signal handler and this is currently handled by vfp_{preserve,restore}_context in signal.c Since this code requires intimate low-level knowledge of the VFP state, this patch moves it into vfpmodule.c. Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/thread_info.h | 7 ++++ arch/arm/kernel/signal.c | 55 ++------------------------ arch/arm/vfp/vfpmodule.c | 79 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 90 insertions(+), 51 deletions(-) diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index d4c24d4..0f04d84 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -118,6 +118,13 @@ extern void iwmmxt_task_switch(struct thread_info *); extern void vfp_sync_hwstate(struct thread_info *); extern void vfp_flush_hwstate(struct thread_info *); +struct user_vfp; +struct user_vfp_exc; + +extern int vfp_preserve_user_clear_hwstate(struct user_vfp __user *, + struct user_vfp_exc __user *); +extern int vfp_restore_user_hwstate(struct user_vfp __user *, + struct user_vfp_exc __user *); #endif /* diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 7cb532f..d68d1b6 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -180,44 +180,23 @@ static int restore_iwmmxt_context(struct iwmmxt_sigframe *frame) static int preserve_vfp_context(struct vfp_sigframe __user *frame) { - struct thread_info *thread = current_thread_info(); - struct vfp_hard_struct *h = &thread->vfpstate.hard; const unsigned long magic = VFP_MAGIC; const unsigned long size = VFP_STORAGE_SIZE; int err = 0; - vfp_sync_hwstate(thread); __put_user_error(magic, &frame->magic, err); __put_user_error(size, &frame->size, err); - /* - * Copy the floating point registers. There can be unused - * registers see asm/hwcap.h for details. - */ - err |= __copy_to_user(&frame->ufp.fpregs, &h->fpregs, - sizeof(h->fpregs)); - /* - * Copy the status and control register. - */ - __put_user_error(h->fpscr, &frame->ufp.fpscr, err); - - /* - * Copy the exception registers. - */ - __put_user_error(h->fpexc, &frame->ufp_exc.fpexc, err); - __put_user_error(h->fpinst, &frame->ufp_exc.fpinst, err); - __put_user_error(h->fpinst2, &frame->ufp_exc.fpinst2, err); + if (err) + return -EFAULT; - return err ? -EFAULT : 0; + return vfp_preserve_user_clear_hwstate(&frame->ufp, &frame->ufp_exc); } static int restore_vfp_context(struct vfp_sigframe __user *frame) { - struct thread_info *thread = current_thread_info(); - struct vfp_hard_struct *h = &thread->vfpstate.hard; unsigned long magic; unsigned long size; - unsigned long fpexc; int err = 0; __get_user_error(magic, &frame->magic, err); @@ -228,33 +207,7 @@ static int restore_vfp_context(struct vfp_sigframe __user *frame) if (magic != VFP_MAGIC || size != VFP_STORAGE_SIZE) return -EINVAL; - vfp_flush_hwstate(thread); - - /* - * Copy the floating point registers. There can be unused - * registers see asm/hwcap.h for details. - */ - err |= __copy_from_user(&h->fpregs, &frame->ufp.fpregs, - sizeof(h->fpregs)); - /* - * Copy the status and control register. - */ - __get_user_error(h->fpscr, &frame->ufp.fpscr, err); - - /* - * Sanitise and restore the exception registers. - */ - __get_user_error(fpexc, &frame->ufp_exc.fpexc, err); - /* Ensure the VFP is enabled. */ - fpexc |= FPEXC_EN; - /* Ensure FPINST2 is invalid and the exception flag is cleared. */ - fpexc &= ~(FPEXC_EX | FPEXC_FP2V); - h->fpexc = fpexc; - - __get_user_error(h->fpinst, &frame->ufp_exc.fpinst, err); - __get_user_error(h->fpinst2, &frame->ufp_exc.fpinst2, err); - - return err ? -EFAULT : 0; + return vfp_restore_user_hwstate(&frame->ufp, &frame->ufp_exc); } #endif diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 858748e..05872d9 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -17,6 +17,8 @@ #include #include #include +#include +#include #include #include @@ -529,6 +531,83 @@ void vfp_flush_hwstate(struct thread_info *thread) } /* + * Save the current VFP state into the provided structures and prepare + * for entry into a new function (signal handler). + */ +int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp, + struct user_vfp_exc __user *ufp_exc) +{ + struct thread_info *thread = current_thread_info(); + struct vfp_hard_struct *hwstate = &thread->vfpstate.hard; + int err = 0; + + /* Ensure that the saved hwstate is up-to-date. */ + vfp_sync_hwstate(thread); + + /* + * Copy the floating point registers. There can be unused + * registers see asm/hwcap.h for details. + */ + err |= __copy_to_user(&ufp->fpregs, &hwstate->fpregs, + sizeof(hwstate->fpregs)); + /* + * Copy the status and control register. + */ + __put_user_error(hwstate->fpscr, &ufp->fpscr, err); + + /* + * Copy the exception registers. + */ + __put_user_error(hwstate->fpexc, &ufp_exc->fpexc, err); + __put_user_error(hwstate->fpinst, &ufp_exc->fpinst, err); + __put_user_error(hwstate->fpinst2, &ufp_exc->fpinst2, err); + + if (err) + return -EFAULT; + return 0; +} + +/* Sanitise and restore the current VFP state from the provided structures. */ +int vfp_restore_user_hwstate(struct user_vfp __user *ufp, + struct user_vfp_exc __user *ufp_exc) +{ + struct thread_info *thread = current_thread_info(); + struct vfp_hard_struct *hwstate = &thread->vfpstate.hard; + unsigned long fpexc; + int err = 0; + + vfp_flush_hwstate(thread); + + /* + * Copy the floating point registers. There can be unused + * registers see asm/hwcap.h for details. + */ + err |= __copy_from_user(&hwstate->fpregs, &ufp->fpregs, + sizeof(hwstate->fpregs)); + /* + * Copy the status and control register. + */ + __get_user_error(hwstate->fpscr, &ufp->fpscr, err); + + /* + * Sanitise and restore the exception registers. + */ + __get_user_error(fpexc, &ufp_exc->fpexc, err); + + /* Ensure the VFP is enabled. */ + fpexc |= FPEXC_EN; + + /* Ensure FPINST2 is invalid and the exception flag is cleared. */ + fpexc &= ~(FPEXC_EX | FPEXC_FP2V); + hwstate->fpexc = fpexc; + + __get_user_error(hwstate->fpinst, &ufp_exc->fpinst, err); + __get_user_error(hwstate->fpinst2, &ufp_exc->fpinst2, err); + + return err ? -EFAULT : 0; +} + +/* * VFP hardware can lose all context when a CPU goes offline. * As we will be running in SMP mode with CPU hotplug, we will save the * hardware state at every thread switch. We clear our held state when -- cgit v1.1 From ff9a184cfb6542bef98aff1789481284e122a4b3 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 23 Apr 2012 15:42:16 +0100 Subject: ARM: 7400/1: vfp: clear fpscr length and stride bits on entry to sig handler The ARM PCS mandates that the length and stride bits of the fpscr are cleared on entry to and return from a public interface. Although signal handlers run asynchronously with respect to the interrupted function, the handler itself expects to run as though it has been called like a normal function. This patch updates the state mirroring the VFP hardware before entry to a signal handler so that it adheres to the PCS. Furthermore, we disable VFP to ensure that we trap on any floating point operation performed by the signal handler and synchronise the hardware appropriately. A check is inserted after the signal handler to avoid redundant flushing if VFP was not used. Reported-by: Peter Maydell Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/vfp/vfpmodule.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 05872d9..bc683b8 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -564,6 +564,21 @@ int vfp_preserve_user_clear_hwstate(struct user_vfp __user *ufp, if (err) return -EFAULT; + + /* Ensure that VFP is disabled. */ + vfp_flush_hwstate(thread); + + /* + * As per the PCS, clear the length and stride bits for function + * entry. + */ + hwstate->fpscr &= ~(FPSCR_LENGTH_MASK | FPSCR_STRIDE_MASK); + + /* + * Disable VFP in the hwstate so that we can detect if it gets + * used. + */ + hwstate->fpexc &= ~FPEXC_EN; return 0; } @@ -576,7 +591,12 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp, unsigned long fpexc; int err = 0; - vfp_flush_hwstate(thread); + /* + * If VFP has been used, then disable it to avoid corrupting + * the new thread state. + */ + if (hwstate->fpexc & FPEXC_EN) + vfp_flush_hwstate(thread); /* * Copy the floating point registers. There can be unused -- cgit v1.1 From 754aba436bed2051deaa2af7bdda553df056b6fc Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Wed, 18 Apr 2012 22:26:51 +0100 Subject: ARM: 7390/1: dts: versatile-pb/ab fix MMC IRQs The MMCI driver will not work without two IRQs since this is not flagged as a single-irq variant. Looking through the complex IRQ definition for the MMCI on the versatile (including an #if 1 statement forcing MMCI IRQ0 to the VIC) this appears to the the correct IRQ number for both models. Cc: Niklas Hernaeus Signed-off-by: Linus Walleij Signed-off-by: Russell King --- arch/arm/boot/dts/versatile-ab.dts | 2 +- arch/arm/boot/dts/versatile-pb.dts | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/versatile-ab.dts b/arch/arm/boot/dts/versatile-ab.dts index 0b32925..e2fe319 100644 --- a/arch/arm/boot/dts/versatile-ab.dts +++ b/arch/arm/boot/dts/versatile-ab.dts @@ -173,7 +173,7 @@ mmc@5000 { compatible = "arm,primecell"; reg = < 0x5000 0x1000>; - interrupts = <22>; + interrupts = <22 34>; }; kmi@6000 { compatible = "arm,pl050", "arm,primecell"; diff --git a/arch/arm/boot/dts/versatile-pb.dts b/arch/arm/boot/dts/versatile-pb.dts index 1664610..7e81752 100644 --- a/arch/arm/boot/dts/versatile-pb.dts +++ b/arch/arm/boot/dts/versatile-pb.dts @@ -41,7 +41,7 @@ mmc@b000 { compatible = "arm,primecell"; reg = <0xb000 0x1000>; - interrupts = <23>; + interrupts = <23 34>; }; }; }; -- cgit v1.1 From 354535845ffb74d8a4827fbdaa493037d0030eea Mon Sep 17 00:00:00 2001 From: Russell King Date: Sat, 14 Apr 2012 18:57:10 +0100 Subject: ARM: OMAP: fix DMA vs memory ordering Using coherent DMA memory with the OMAP DMA engine results in unpredictable behaviour due to memory ordering issues; as things stand, there is no guarantee that data written to coherent DMA memory will be visible to the DMA hardware. This is because the OMAP dma_write() accessor contains no barriers, necessary on ARMv6 and above. The effect of this can be seen in comments in the OMAP serial driver, which incorrectly talks about cache flushing for the coherent DMA stuff. Rather than adding barriers to the accessors, add it in the DMA support code just before we enable DMA, and just after we disable DMA. This avoids having barriers for every DMA register access. Acked-by: Tony Lindgren Acked-by: Santosh Shilimkar Signed-off-by: Russell King --- arch/arm/plat-omap/dma.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c index ecdb3da..c58d896 100644 --- a/arch/arm/plat-omap/dma.c +++ b/arch/arm/plat-omap/dma.c @@ -916,6 +916,13 @@ void omap_start_dma(int lch) l |= OMAP_DMA_CCR_BUFFERING_DISABLE; l |= OMAP_DMA_CCR_EN; + /* + * As dma_write() uses IO accessors which are weakly ordered, there + * is no guarantee that data in coherent DMA memory will be visible + * to the DMA device. Add a memory barrier here to ensure that any + * such data is visible prior to enabling DMA. + */ + mb(); p->dma_write(l, CCR, lch); dma_chan[lch].flags |= OMAP_DMA_ACTIVE; @@ -965,6 +972,13 @@ void omap_stop_dma(int lch) p->dma_write(l, CCR, lch); } + /* + * Ensure that data transferred by DMA is visible to any access + * after DMA has been disabled. This is important for coherent + * DMA regions. + */ + mb(); + if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) { int next_lch, cur_lch = lch; char dma_chan_link_map[dma_lch_count]; -- cgit v1.1 From 9112a6b2fa4201c284c62a389710bd32b48c5f63 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 16:17:13 -0400 Subject: xtensa: fix build failure in xtensa/kernel/signal.c Caused by commit 3785006ac3c8941feb63097c416de92114a6bc39 "xtensa: don't mask signals if we fail to setup signal stack" It assigns a return value to "ret", but there is no such variable anywhere in scope. Create one. Cc: Oleg Nesterov Cc: Chris Zankel Acked-by: Matt Fleming Signed-off-by: Paul Gortmaker --- arch/xtensa/kernel/signal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c index b69b000..d78869a 100644 --- a/arch/xtensa/kernel/signal.c +++ b/arch/xtensa/kernel/signal.c @@ -496,6 +496,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset) signr = get_signal_to_deliver(&info, &ka, regs, NULL); if (signr > 0) { + int ret; /* Are we from a system call? */ -- cgit v1.1 From bfae8ee8d28e6a4ac1d63e8077cb09928d8a557a Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 16:20:38 -0400 Subject: xtensa: fix build error in xtensa/include/asm/io.h Caused by commit 6c03438edeb5c359af35f060ea016ca65671c269 kernel.h: doesn't explicitly use bug.h, so don't include it. This header uses bug.h so explicitly include it now that the implicit presence was removed by 6c03438ed. Signed-off-by: Paul Gortmaker --- arch/xtensa/include/asm/io.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h index d04cd3a..4beb43c 100644 --- a/arch/xtensa/include/asm/io.h +++ b/arch/xtensa/include/asm/io.h @@ -14,6 +14,7 @@ #ifdef __KERNEL__ #include #include +#include #include #include -- cgit v1.1 From 9f3045eca89a2e6fdd1901aafb9e28231d3f31fb Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 16:29:57 -0400 Subject: irq: hide debug macros so they don't collide with others. The file kernel/irq/debug.h temporarily defines P, PS, PD and then undefines them. However these names aren't really "internal" enough, and collide with other more legit users such as the ones in the xtensa arch, causing: In file included from kernel/irq/internals.h:58:0, from kernel/irq/irqdesc.c:18: kernel/irq/debug.h:8:0: warning: "PS" redefined [enabled by default] arch/xtensa/include/asm/regs.h:59:0: note: this is the location of the previous definition Add a handful of underscores to do a better job of hiding these temporary macros. Cc: Thomas Gleixner Signed-off-by: Paul Gortmaker --- kernel/irq/debug.h | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/kernel/irq/debug.h b/kernel/irq/debug.h index 97a8bfa..e75e29e 100644 --- a/kernel/irq/debug.h +++ b/kernel/irq/debug.h @@ -4,10 +4,10 @@ #include -#define P(f) if (desc->status_use_accessors & f) printk("%14s set\n", #f) -#define PS(f) if (desc->istate & f) printk("%14s set\n", #f) +#define ___P(f) if (desc->status_use_accessors & f) printk("%14s set\n", #f) +#define ___PS(f) if (desc->istate & f) printk("%14s set\n", #f) /* FIXME */ -#define PD(f) do { } while (0) +#define ___PD(f) do { } while (0) static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) { @@ -23,23 +23,23 @@ static inline void print_irq_desc(unsigned int irq, struct irq_desc *desc) print_symbol("%s\n", (unsigned long)desc->action->handler); } - P(IRQ_LEVEL); - P(IRQ_PER_CPU); - P(IRQ_NOPROBE); - P(IRQ_NOREQUEST); - P(IRQ_NOTHREAD); - P(IRQ_NOAUTOEN); + ___P(IRQ_LEVEL); + ___P(IRQ_PER_CPU); + ___P(IRQ_NOPROBE); + ___P(IRQ_NOREQUEST); + ___P(IRQ_NOTHREAD); + ___P(IRQ_NOAUTOEN); - PS(IRQS_AUTODETECT); - PS(IRQS_REPLAY); - PS(IRQS_WAITING); - PS(IRQS_PENDING); + ___PS(IRQS_AUTODETECT); + ___PS(IRQS_REPLAY); + ___PS(IRQS_WAITING); + ___PS(IRQS_PENDING); - PD(IRQS_INPROGRESS); - PD(IRQS_DISABLED); - PD(IRQS_MASKED); + ___PD(IRQS_INPROGRESS); + ___PD(IRQS_DISABLED); + ___PD(IRQS_MASKED); } -#undef P -#undef PS -#undef PD +#undef ___P +#undef ___PS +#undef ___PD -- cgit v1.1 From 53ad1c980d4fb450722a575ca17c188808939340 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Wed, 4 Apr 2012 09:49:15 -0500 Subject: dlm: fix QUECVT when convert queue is empty The QUECVT flag should not prevent conversions from being granted immediately when the convert queue is empty. Signed-off-by: David Teigland --- fs/dlm/lock.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c index fa5c07d..4c58d4a 100644 --- a/fs/dlm/lock.c +++ b/fs/dlm/lock.c @@ -1737,6 +1737,18 @@ static int _can_be_granted(struct dlm_rsb *r, struct dlm_lkb *lkb, int now) return 1; /* + * Even if the convert is compat with all granted locks, + * QUECVT forces it behind other locks on the convert queue. + */ + + if (now && conv && (lkb->lkb_exflags & DLM_LKF_QUECVT)) { + if (list_empty(&r->res_convertqueue)) + return 1; + else + goto out; + } + + /* * The NOORDER flag is set to avoid the standard vms rules on grant * order. */ -- cgit v1.1 From 6bbbc30ce6b0ae428575c8af7c2a6c342c534e19 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Tue, 15 Nov 2011 16:58:11 -0600 Subject: Hexagon: misc compile warning/error cleanup due to missing headers Fixed warnings/errors for EXPORT_SYMBOL, linux_binprm, elf related defines Signed-off-by: Richard Kuo --- arch/hexagon/kernel/dma.c | 1 + arch/hexagon/kernel/ptrace.c | 1 + arch/hexagon/kernel/time.c | 1 + arch/hexagon/kernel/vdso.c | 1 + 4 files changed, 4 insertions(+) diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c index 3730221..0f2367c 100644 --- a/arch/hexagon/kernel/dma.c +++ b/arch/hexagon/kernel/dma.c @@ -22,6 +22,7 @@ #include #include #include +#include struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); diff --git a/arch/hexagon/kernel/ptrace.c b/arch/hexagon/kernel/ptrace.c index 32342de..96c3b2c 100644 --- a/arch/hexagon/kernel/ptrace.c +++ b/arch/hexagon/kernel/ptrace.c @@ -28,6 +28,7 @@ #include #include #include +#include #include diff --git a/arch/hexagon/kernel/time.c b/arch/hexagon/kernel/time.c index 6bee15c..5d9b33b 100644 --- a/arch/hexagon/kernel/time.c +++ b/arch/hexagon/kernel/time.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include diff --git a/arch/hexagon/kernel/vdso.c b/arch/hexagon/kernel/vdso.c index f212a45..5d39f42 100644 --- a/arch/hexagon/kernel/vdso.c +++ b/arch/hexagon/kernel/vdso.c @@ -21,6 +21,7 @@ #include #include #include +#include #include -- cgit v1.1 From e8e42a5cff0704e83151455307a9b0d78fb43b93 Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Wed, 7 Mar 2012 15:27:23 -0600 Subject: hexagon: use renamed tick_nohz_idle_* functions Signed-off-by: Richard Kuo --- arch/hexagon/kernel/process.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c index 18c4f0b..ff02821 100644 --- a/arch/hexagon/kernel/process.c +++ b/arch/hexagon/kernel/process.c @@ -1,7 +1,7 @@ /* * Process creation support for Hexagon * - * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * Copyright (c) 2010-2012, Code Aurora Forum. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -88,7 +88,7 @@ void (*idle_sleep)(void) = default_idle; void cpu_idle(void) { while (1) { - tick_nohz_stop_sched_tick(1); + tick_nohz_idle_enter(); local_irq_disable(); while (!need_resched()) { idle_sleep(); @@ -97,7 +97,7 @@ void cpu_idle(void) local_irq_disable(); } local_irq_enable(); - tick_nohz_restart_sched_tick(); + tick_nohz_idle_exit(); schedule(); } } -- cgit v1.1 From 57f27cca7ab59cec05adc85cef97e9b4f7d28d78 Mon Sep 17 00:00:00 2001 From: "Srivatsa S. Bhat" Date: Thu, 22 Mar 2012 16:58:25 +0530 Subject: hexagon/CPU hotplug: Add missing call to notify_cpu_starting() The scheduler depends on receiving the CPU_STARTING notification, without which we end up into a lot of trouble. So add the missing call to notify_cpu_starting() in the bringup code. Signed-off-by: Srivatsa S. Bhat Signed-off-by: Richard Kuo --- arch/hexagon/kernel/smp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c index 9b44a9e..0672463 100644 --- a/arch/hexagon/kernel/smp.c +++ b/arch/hexagon/kernel/smp.c @@ -177,7 +177,12 @@ void __cpuinit start_secondary(void) printk(KERN_INFO "%s cpu %d\n", __func__, current_thread_info()->cpu); + notify_cpu_starting(cpu); + + ipi_call_lock(); set_cpu_online(cpu, true); + ipi_call_unlock(); + local_irq_enable(); cpu_idle(); -- cgit v1.1 From e00574b7f3181c5277df819e960d5af205e0e87a Mon Sep 17 00:00:00 2001 From: Richard Kuo Date: Thu, 12 Apr 2012 15:57:33 -0500 Subject: hexagon: add missing cpu.h include Signed-off-by: Richard Kuo --- arch/hexagon/kernel/smp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/hexagon/kernel/smp.c b/arch/hexagon/kernel/smp.c index 0672463..1298141 100644 --- a/arch/hexagon/kernel/smp.c +++ b/arch/hexagon/kernel/smp.c @@ -1,7 +1,7 @@ /* * SMP support for Hexagon * - * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. + * Copyright (c) 2010-2012, Code Aurora Forum. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -28,6 +28,7 @@ #include #include #include +#include #include /* timer_interrupt */ #include -- cgit v1.1 From 64ea57d0c77bd85003b63c6090ddfae114ef6508 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Sun, 15 Apr 2012 20:38:05 +0200 Subject: ath9k: add an extra boolean parameter to ath9k_hw_apply_txpower In order to unifying regulatory limit handling commit ca2c68cc7bc80fc4504fb420df04cce99c9ee6ec (ath9k_hw: clean up tx power handling) introduced a new helper function 'ath9k_hw_apply_txpower', and the direct calls of 'ah->eep_ops->set_txpower' has been replaced by a call of the helper function. This caused a change in the behaviour of the 'ath9k_hw_set_txpowerlimit' function. The purpose of that function is to calculate and store the rate txpower table and the regulatory limit without touching the hardware registers. Before the commit, the 'test' parameter of the function was passed to the 'ah->eep_ops->set_txpower'. Now the calling of the 'set_txpower' function happens indirectly through 'ath9k_hw_apply_txpower', so the 'test' argument of the 'set_txpower' is always 'false'. This patch restores the original behaviour of 'ath9k_hw_set_txpowerlimit' by adding a new argument to 'ath9k_hw_apply_txpower.' Signed-off-by: Gabor Juhos Acked-by: Felix Fietkau Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar5008_phy.c | 2 +- drivers/net/wireless/ath/ath9k/ar9003_paprd.c | 2 +- drivers/net/wireless/ath/ath9k/ar9003_phy.c | 2 +- drivers/net/wireless/ath/ath9k/hw.c | 9 +++++---- drivers/net/wireless/ath/ath9k/hw.h | 3 ++- 5 files changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar5008_phy.c b/drivers/net/wireless/ath/ath9k/ar5008_phy.c index d7d8e91..aba0880 100644 --- a/drivers/net/wireless/ath/ath9k/ar5008_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar5008_phy.c @@ -869,7 +869,7 @@ static int ar5008_hw_process_ini(struct ath_hw *ah, ar5008_hw_set_channel_regs(ah, chan); ar5008_hw_init_chain_masks(ah); ath9k_olc_init(ah); - ath9k_hw_apply_txpower(ah, chan); + ath9k_hw_apply_txpower(ah, chan, false); /* Write analog registers */ if (!ath9k_hw_set_rf_regs(ah, chan, freqIndex)) { diff --git a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c index 59647a3..3d400e8 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_paprd.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_paprd.c @@ -54,7 +54,7 @@ void ar9003_paprd_enable(struct ath_hw *ah, bool val) if (val) { ah->paprd_table_write_done = true; - ath9k_hw_apply_txpower(ah, chan); + ath9k_hw_apply_txpower(ah, chan, false); } REG_RMW_FIELD(ah, AR_PHY_PAPRD_CTRL0_B0, diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index bc992b2..deb6cfb 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -694,7 +694,7 @@ static int ar9003_hw_process_ini(struct ath_hw *ah, ar9003_hw_override_ini(ah); ar9003_hw_set_channel_regs(ah, chan); ar9003_hw_set_chain_masks(ah, ah->rxchainmask, ah->txchainmask); - ath9k_hw_apply_txpower(ah, chan); + ath9k_hw_apply_txpower(ah, chan, false); if (AR_SREV_9462(ah)) { if (REG_READ_FIELD(ah, AR_PHY_TX_IQCAL_CONTROL_0, diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c index 6c69e4e..fa84e37 100644 --- a/drivers/net/wireless/ath/ath9k/hw.c +++ b/drivers/net/wireless/ath/ath9k/hw.c @@ -1454,7 +1454,7 @@ static bool ath9k_hw_channel_change(struct ath_hw *ah, return false; } ath9k_hw_set_clockrate(ah); - ath9k_hw_apply_txpower(ah, chan); + ath9k_hw_apply_txpower(ah, chan, false); ath9k_hw_rfbus_done(ah); if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan)) @@ -2652,7 +2652,8 @@ static int get_antenna_gain(struct ath_hw *ah, struct ath9k_channel *chan) return ah->eep_ops->get_eeprom(ah, gain_param); } -void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan) +void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan, + bool test) { struct ath_regulatory *reg = ath9k_hw_regulatory(ah); struct ieee80211_channel *channel; @@ -2673,7 +2674,7 @@ void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan) ah->eep_ops->set_txpower(ah, chan, ath9k_regd_get_ctl(reg, chan), - ant_reduction, new_pwr, false); + ant_reduction, new_pwr, test); } void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test) @@ -2686,7 +2687,7 @@ void ath9k_hw_set_txpowerlimit(struct ath_hw *ah, u32 limit, bool test) if (test) channel->max_power = MAX_RATE_POWER / 2; - ath9k_hw_apply_txpower(ah, chan); + ath9k_hw_apply_txpower(ah, chan, test); if (test) channel->max_power = DIV_ROUND_UP(reg->max_power_level, 2); diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h index aa1680a..e88f182 100644 --- a/drivers/net/wireless/ath/ath9k/hw.h +++ b/drivers/net/wireless/ath/ath9k/hw.h @@ -985,7 +985,8 @@ void ath9k_hw_name(struct ath_hw *ah, char *hw_name, size_t len); /* PHY */ void ath9k_hw_get_delta_slope_vals(struct ath_hw *ah, u32 coef_scaled, u32 *coef_mantissa, u32 *coef_exponent); -void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan); +void ath9k_hw_apply_txpower(struct ath_hw *ah, struct ath9k_channel *chan, + bool test); /* * Code Specific to AR5008, AR9001 or AR9002, -- cgit v1.1 From 83722bd4aede80714f75bedc3cce9b6ea9baea7b Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Sun, 15 Apr 2012 20:38:06 +0200 Subject: ath9k: fix tx power settings for AR9287 The 'ath9k_hw_update_regulatory_maxpower' helper function has been introduced by commit a55f858852e4345d0a31af593c46738ca8614bff (ath9k_hw: Cleanup TX power calculation for AR9287). Updating of the max_power_level value has been moved into the helper function in that change, however the removed code from 'ath9k_hw_ar9287_set_txpower' has not been replaced with a call of the new helper function. Due to that missing call, retrieving tx power for 2x2 and 3x3 chainmask is not handled properly. During the calculation of the tx power for 2x2 and 3x3 chainmasks the values are reduced. Those reductions must be compensated during retrieving. Fix this by adding the missing call of the helper function. Signed-off-by: Gabor Juhos Acked-by: Sujith Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/eeprom_9287.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/eeprom_9287.c b/drivers/net/wireless/ath/ath9k/eeprom_9287.c index f272236..b34e8b2 100644 --- a/drivers/net/wireless/ath/ath9k/eeprom_9287.c +++ b/drivers/net/wireless/ath/ath9k/eeprom_9287.c @@ -824,6 +824,8 @@ static void ath9k_hw_ar9287_set_txpower(struct ath_hw *ah, regulatory->max_power_level = ratesArray[i]; } + ath9k_hw_update_regulatory_maxpower(ah); + if (test) return; -- cgit v1.1 From 8db4c7e25d153fb049e81715d72fa3be3a0c3b69 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Wed, 18 Apr 2012 08:01:15 -0700 Subject: iwlwifi: do not nulify ctx->vif on reset ctx->vif is dereferenced in different part of iwlwifi code, so do not nullify it. This should address at least one of the possible reasons of WARNING at iwlagn_mac_remove_interface, and perhaps some random crashes when firmware reset is performed. Cc: stable@vger.kernel.org Signed-off-by: Stanislaw Gruszka Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn.c | 3 --- drivers/net/wireless/iwlwifi/iwl-mac80211.c | 10 +++++++++- 2 files changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c index f1226dbf..2a9a16f 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn.c @@ -863,7 +863,6 @@ static void iwl_bg_run_time_calib_work(struct work_struct *work) void iwlagn_prepare_restart(struct iwl_priv *priv) { - struct iwl_rxon_context *ctx; bool bt_full_concurrent; u8 bt_ci_compliance; u8 bt_load; @@ -872,8 +871,6 @@ void iwlagn_prepare_restart(struct iwl_priv *priv) lockdep_assert_held(&priv->mutex); - for_each_context(priv, ctx) - ctx->vif = NULL; priv->is_open = 0; /* diff --git a/drivers/net/wireless/iwlwifi/iwl-mac80211.c b/drivers/net/wireless/iwlwifi/iwl-mac80211.c index b6805f8..c24a713 100644 --- a/drivers/net/wireless/iwlwifi/iwl-mac80211.c +++ b/drivers/net/wireless/iwlwifi/iwl-mac80211.c @@ -1244,6 +1244,7 @@ static int iwlagn_mac_add_interface(struct ieee80211_hw *hw, struct iwl_rxon_context *tmp, *ctx = NULL; int err; enum nl80211_iftype viftype = ieee80211_vif_type_p2p(vif); + bool reset = false; IWL_DEBUG_MAC80211(priv, "enter: type %d, addr %pM\n", viftype, vif->addr); @@ -1265,6 +1266,13 @@ static int iwlagn_mac_add_interface(struct ieee80211_hw *hw, tmp->interface_modes | tmp->exclusive_interface_modes; if (tmp->vif) { + /* On reset we need to add the same interface again */ + if (tmp->vif == vif) { + reset = true; + ctx = tmp; + break; + } + /* check if this busy context is exclusive */ if (tmp->exclusive_interface_modes & BIT(tmp->vif->type)) { @@ -1291,7 +1299,7 @@ static int iwlagn_mac_add_interface(struct ieee80211_hw *hw, ctx->vif = vif; err = iwl_setup_interface(priv, ctx); - if (!err) + if (!err || reset) goto out; ctx->vif = NULL; -- cgit v1.1 From dd447319895d0c0af423e483d9b63f84f3f8869a Mon Sep 17 00:00:00 2001 From: Stanislav Yakovlev Date: Thu, 19 Apr 2012 15:55:09 -0400 Subject: ipw2200: Fix race condition in the command completion acknowledge Driver incorrectly validates command completion: instead of waiting for a command to be acknowledged it continues execution. Most of the time driver gets acknowledge of the command completion in a tasklet before it executes the next one. But sometimes it sends the next command before it gets acknowledge for the previous one. In such a case one of the following error messages appear in the log: Failed to send SYSTEM_CONFIG: Already sending a command. Failed to send ASSOCIATE: Already sending a command. Failed to send TX_POWER: Already sending a command. After that you need to reload the driver to get it working again. This bug occurs during roaming (reported by Sam Varshavchik) https://bugzilla.redhat.com/show_bug.cgi?id=738508 and machine booting (reported by Tom Gundersen and Mads Kiilerich) https://bugs.archlinux.org/task/28097 https://bugzilla.redhat.com/show_bug.cgi?id=802106 This patch doesn't fix the delay issue during firmware load. But at least device now works as usual after boot. Cc: stable@kernel.org Signed-off-by: Stanislav Yakovlev Signed-off-by: John W. Linville --- drivers/net/wireless/ipw2x00/ipw2200.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ipw2x00/ipw2200.c b/drivers/net/wireless/ipw2x00/ipw2200.c index 2b02257..1779db3 100644 --- a/drivers/net/wireless/ipw2x00/ipw2200.c +++ b/drivers/net/wireless/ipw2x00/ipw2200.c @@ -2191,6 +2191,7 @@ static int __ipw_send_cmd(struct ipw_priv *priv, struct host_cmd *cmd) { int rc = 0; unsigned long flags; + unsigned long now, end; spin_lock_irqsave(&priv->lock, flags); if (priv->status & STATUS_HCMD_ACTIVE) { @@ -2232,10 +2233,20 @@ static int __ipw_send_cmd(struct ipw_priv *priv, struct host_cmd *cmd) } spin_unlock_irqrestore(&priv->lock, flags); + now = jiffies; + end = now + HOST_COMPLETE_TIMEOUT; +again: rc = wait_event_interruptible_timeout(priv->wait_command_queue, !(priv-> status & STATUS_HCMD_ACTIVE), - HOST_COMPLETE_TIMEOUT); + end - now); + if (rc < 0) { + now = jiffies; + if (time_before(now, end)) + goto again; + rc = 0; + } + if (rc == 0) { spin_lock_irqsave(&priv->lock, flags); if (priv->status & STATUS_HCMD_ACTIVE) { -- cgit v1.1 From 44eb65cfd8da4b9c231238998729e858e963a980 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 19 Apr 2012 21:39:06 -0500 Subject: rtlwifi: Fix oops on unload Under some circumstances, a PCI-based driver reports the following OOPs: Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Oops: 0000 [#1] SMP --snip-- Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Pid: 19627, comm: rmmod Not tainted 3.2.9-2.fc16.x86_64 #1 LENOVO 05962RU/05962RU Mar 19 08:14:35 kvothe kernel: [ 6584.626011] RIP: 0010:[] [] rtl92ce_get_desc+0x19/0xd0 [rtl8192ce] --snip-- Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Process rmmod (pid: 19627, threadinfo ffff880050262000, task ffff8801156d5cc0) Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Stack: Mar 19 08:14:35 kvothe kernel: [ 6584.626011] 0000000000000002 ffff8801176c2540 ffff880050263ca8 ffffffffa03348e7 Mar 19 08:14:35 kvothe kernel: [ 6584.626011] 0000000000000282 0000000180150014 ffff880050263fd8 ffff8801176c2810 Mar 19 08:14:35 kvothe kernel: [ 6584.626011] ffff880050263bc8 ffffffff810550e2 00000000000002c0 ffff8801176c0d40 Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Call Trace: Mar 19 08:14:35 kvothe kernel: [ 6584.626011] [] _rtl_pci_rx_interrupt+0x187/0x650 [rtlwifi] --snip-- Mar 19 08:14:35 kvothe kernel: [ 6584.626011] Code: ff 09 d0 89 07 48 83 c4 08 5b 5d c3 66 0f 1f 44 00 00 55 48 89 e5 53 48 83 ec 08 66 66 66 66 90 40 84 f6 89 d3 74 13 84 d2 75 57 <8b> 07 48 83 c4 08 5b 5d c1 e8 1f c3 0f 1f 00 84 d2 74 ed 80 fa Mar 19 08:14:35 kvothe kernel: [ 6584.626011] RIP [] rtl92ce_get_desc+0x19/0xd0 [rtl8192ce] Mar 19 08:14:35 kvothe kernel: [ 6584.626011] RSP Mar 19 08:14:35 kvothe kernel: [ 6584.626011] CR2: 00000000000006e0 Mar 19 08:14:35 kvothe kernel: [ 6584.646491] ---[ end trace 8636c766dcfbe0e6 ]--- This oops is due to interrupts not being disabled in this particular path. Reported-by: Dave Airlie Tested-by: Dave Airlie Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c index 288b035..cc15fdb 100644 --- a/drivers/net/wireless/rtlwifi/pci.c +++ b/drivers/net/wireless/rtlwifi/pci.c @@ -1941,6 +1941,7 @@ void rtl_pci_disconnect(struct pci_dev *pdev) rtl_deinit_deferred_work(hw); rtlpriv->intf_ops->adapter_stop(hw); } + rtlpriv->cfg->ops->disable_interrupt(hw); /*deinit rfkill */ rtl_deinit_rfkill(hw); -- cgit v1.1 From 6ead629b27269c553c9092c47cd8f5ab0309ee3b Mon Sep 17 00:00:00 2001 From: Eldad Zack Date: Sun, 22 Apr 2012 00:48:04 +0200 Subject: brcmsmac: "INTERMEDIATE but not AMPDU" only when tracing I keep getting the following messages on the log buffer: [ 2167.097507] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2281.331305] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2281.332539] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2329.876605] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2329.877354] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2462.280756] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU [ 2615.651689] ieee80211 phy0: brcms_c_dotxstatus: INTERMEDIATE but not AMPDU From the code comment I understand that this something that can - and does, quite frequently - happen. Signed-off-by: Eldad Zack Acked-by: Franky Lin Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmsmac/main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c b/drivers/net/wireless/brcm80211/brcmsmac/main.c index 7083db7..b4d9279 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/main.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c @@ -847,8 +847,7 @@ brcms_c_dotxstatus(struct brcms_c_info *wlc, struct tx_status *txs) */ if (!(txs->status & TX_STATUS_AMPDU) && (txs->status & TX_STATUS_INTERMEDIATE)) { - wiphy_err(wlc->wiphy, "%s: INTERMEDIATE but not AMPDU\n", - __func__); + BCMMSG(wlc->wiphy, "INTERMEDIATE but not AMPDU\n"); return false; } -- cgit v1.1 From de050acaa1fdba4852cb195baf2bfed75368e0be Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Tue, 17 Apr 2012 20:28:10 +0100 Subject: ASoC: wm_hubs: Make sure we don't disable differential line outputs While we need to clean up unused single ended line outputs we don't want to do this if the outputs are in differential mode. Signed-off-by: Mark Brown --- sound/soc/codecs/wm_hubs.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c index f13f288..6c028c4 100644 --- a/sound/soc/codecs/wm_hubs.c +++ b/sound/soc/codecs/wm_hubs.c @@ -1035,7 +1035,7 @@ void wm_hubs_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec); - int val; + int mask, val; switch (level) { case SND_SOC_BIAS_STANDBY: @@ -1047,6 +1047,13 @@ void wm_hubs_set_bias_level(struct snd_soc_codec *codec, case SND_SOC_BIAS_ON: /* Turn off any unneded single ended outputs */ val = 0; + mask = 0; + + if (hubs->lineout1_se) + mask |= WM8993_LINEOUT1N_ENA | WM8993_LINEOUT1P_ENA; + + if (hubs->lineout2_se) + mask |= WM8993_LINEOUT2N_ENA | WM8993_LINEOUT2P_ENA; if (hubs->lineout1_se && hubs->lineout1n_ena) val |= WM8993_LINEOUT1N_ENA; @@ -1061,11 +1068,7 @@ void wm_hubs_set_bias_level(struct snd_soc_codec *codec, val |= WM8993_LINEOUT2P_ENA; snd_soc_update_bits(codec, WM8993_POWER_MANAGEMENT_3, - WM8993_LINEOUT1N_ENA | - WM8993_LINEOUT1P_ENA | - WM8993_LINEOUT2N_ENA | - WM8993_LINEOUT2P_ENA, - val); + mask, val); /* Remove the input clamps */ snd_soc_update_bits(codec, WM8993_INPUTS_CLAMP_REG, -- cgit v1.1 From 2a14e541ed87bca0c125b82961ca3c6f808607d2 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Sun, 22 Apr 2012 23:03:17 -0400 Subject: ACPI: Convert wake_sleep_flags to a value instead of function With commit a2ef5c4fd44ce3922435139393b89f2cce47f576 "ACPI: Move module parameter gts and bfs to sleep.c" the wake_sleep_flags is required when calling acpi_enter_sleep_state, which means that if there are functions outside the sleep.c code they can't get the wake_sleep_flags values. This converts the function in to a exported value and converts the module config operands to a function. Acked-by: Rafael J. Wysocki Acked-by: Lin Ming [v2: Parameters can be turned on/off dynamically] [v3: unsigned char -> u8] [v4: val -> kp->arg] Signed-off-by: Konrad Rzeszutek Wilk Link: http://lkml.kernel.org/r/1335150198-21899-2-git-send-email-konrad.wilk@oracle.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/acpi/sleep.h | 2 ++ drivers/acpi/sleep.c | 52 ++++++++++++++++++++++++-------------------- 2 files changed, 30 insertions(+), 24 deletions(-) diff --git a/arch/x86/kernel/acpi/sleep.h b/arch/x86/kernel/acpi/sleep.h index 416d4be..fe5fdda 100644 --- a/arch/x86/kernel/acpi/sleep.h +++ b/arch/x86/kernel/acpi/sleep.h @@ -9,6 +9,8 @@ extern long saved_magic; extern int wakeup_pmode_return; +extern u8 wake_sleep_flags; + extern unsigned long acpi_copy_wakeup_routine(unsigned long); extern void wakeup_long64(void); diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 1d661b5..eb6fd23 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -28,23 +28,33 @@ #include "internal.h" #include "sleep.h" +u8 wake_sleep_flags = ACPI_NO_OPTIONAL_METHODS; static unsigned int gts, bfs; -module_param(gts, uint, 0644); -module_param(bfs, uint, 0644); -MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend."); -MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); - -static u8 wake_sleep_flags(void) +static int set_param_wake_flag(const char *val, struct kernel_param *kp) { - u8 flags = ACPI_NO_OPTIONAL_METHODS; + int ret = param_set_int(val, kp); - if (gts) - flags |= ACPI_EXECUTE_GTS; - if (bfs) - flags |= ACPI_EXECUTE_BFS; + if (ret) + return ret; - return flags; + if (kp->arg == (const char *)>s) { + if (gts) + wake_sleep_flags |= ACPI_EXECUTE_GTS; + else + wake_sleep_flags &= ~ACPI_EXECUTE_GTS; + } + if (kp->arg == (const char *)&bfs) { + if (bfs) + wake_sleep_flags |= ACPI_EXECUTE_BFS; + else + wake_sleep_flags &= ~ACPI_EXECUTE_BFS; + } + return ret; } +module_param_call(gts, set_param_wake_flag, param_get_int, >s, 0644); +module_param_call(bfs, set_param_wake_flag, param_get_int, &bfs, 0644); +MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend."); +MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); static u8 sleep_states[ACPI_S_STATE_COUNT]; @@ -263,7 +273,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state) { acpi_status status = AE_OK; u32 acpi_state = acpi_target_sleep_state; - u8 flags = wake_sleep_flags(); int error; ACPI_FLUSH_CPU_CACHE(); @@ -271,7 +280,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) switch (acpi_state) { case ACPI_STATE_S1: barrier(); - status = acpi_enter_sleep_state(acpi_state, flags); + status = acpi_enter_sleep_state(acpi_state, wake_sleep_flags); break; case ACPI_STATE_S3: @@ -286,7 +295,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(acpi_state, flags); + acpi_leave_sleep_state_prep(acpi_state, wake_sleep_flags); /* ACPI 3.0 specs (P62) says that it's the responsibility * of the OSPM to clear the status bit [ implying that the @@ -550,30 +559,27 @@ static int acpi_hibernation_begin(void) static int acpi_hibernation_enter(void) { - u8 flags = wake_sleep_flags(); acpi_status status = AE_OK; ACPI_FLUSH_CPU_CACHE(); /* This shouldn't return. If it returns, we have a problem */ - status = acpi_enter_sleep_state(ACPI_STATE_S4, flags); + status = acpi_enter_sleep_state(ACPI_STATE_S4, wake_sleep_flags); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(ACPI_STATE_S4, flags); + acpi_leave_sleep_state_prep(ACPI_STATE_S4, wake_sleep_flags); return ACPI_SUCCESS(status) ? 0 : -EFAULT; } static void acpi_hibernation_leave(void) { - u8 flags = wake_sleep_flags(); - /* * If ACPI is not enabled by the BIOS and the boot kernel, we need to * enable it here. */ acpi_enable(); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(ACPI_STATE_S4, flags); + acpi_leave_sleep_state_prep(ACPI_STATE_S4, wake_sleep_flags); /* Check the hardware signature */ if (facs && s4_hardware_signature != facs->hardware_signature) { printk(KERN_EMERG "ACPI: Hardware changed while hibernated, " @@ -828,12 +834,10 @@ static void acpi_power_off_prepare(void) static void acpi_power_off(void) { - u8 flags = wake_sleep_flags(); - /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */ printk(KERN_DEBUG "%s called\n", __func__); local_irq_disable(); - acpi_enter_sleep_state(ACPI_STATE_S5, flags); + acpi_enter_sleep_state(ACPI_STATE_S5, wake_sleep_flags); } /* -- cgit v1.1 From cd74257b974d6d26442c97891c4d05772748b177 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Sun, 22 Apr 2012 23:03:18 -0400 Subject: x86, acpi: Call acpi_enter_sleep_state via an asmlinkage C function from assembler With commit a2ef5c4fd44ce3922435139393b89f2cce47f576 "ACPI: Move module parameter gts and bfs to sleep.c" the wake_sleep_flags is required when calling acpi_enter_sleep_state. The assembler code in wakeup_*.S did not do that. One solution is to call it from assembler and stick the wake_sleep_flags on the stack (for 32-bit) or in %esi (for 64-bit). hpa and rafael both suggested however to create a wrapper function to call acpi_enter_sleep_state and call said wrapper function ("acpi_enter_s3") from assembler. For 32-bit, the acpi_enter_s3 ends up looking as so: push %ebp mov %esp,%ebp sub $0x8,%esp movzbl 0xc1809314,%eax [wake_sleep_flags] movl $0x3,(%esp) mov %eax,0x4(%esp) call 0xc12d1fa0 leave ret And 64-bit: movzbl 0x9afde1(%rip),%esi [wake_sleep_flags] push %rbp mov $0x3,%edi mov %rsp,%rbp callq 0xffffffff812e9800 leaveq retq Reviewed-by: H. Peter Anvin Suggested-by: H. Peter Anvin [v2: Remove extra assembler operations, per hpa review] Signed-off-by: Konrad Rzeszutek Wilk Link: http://lkml.kernel.org/r/1335150198-21899-3-git-send-email-konrad.wilk@oracle.com Signed-off-by: H. Peter Anvin --- arch/x86/kernel/acpi/sleep.c | 4 ++++ arch/x86/kernel/acpi/sleep.h | 2 ++ arch/x86/kernel/acpi/wakeup_32.S | 4 +--- arch/x86/kernel/acpi/wakeup_64.S | 4 +--- 4 files changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 103b6ab..146a49c 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -24,6 +24,10 @@ unsigned long acpi_realmode_flags; static char temp_stack[4096]; #endif +asmlinkage void acpi_enter_s3(void) +{ + acpi_enter_sleep_state(3, wake_sleep_flags); +} /** * acpi_suspend_lowlevel - save kernel state * diff --git a/arch/x86/kernel/acpi/sleep.h b/arch/x86/kernel/acpi/sleep.h index fe5fdda..d68677a 100644 --- a/arch/x86/kernel/acpi/sleep.h +++ b/arch/x86/kernel/acpi/sleep.h @@ -3,6 +3,7 @@ */ #include +#include extern unsigned long saved_video_mode; extern long saved_magic; @@ -10,6 +11,7 @@ extern long saved_magic; extern int wakeup_pmode_return; extern u8 wake_sleep_flags; +extern asmlinkage void acpi_enter_s3(void); extern unsigned long acpi_copy_wakeup_routine(unsigned long); extern void wakeup_long64(void); diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S index 13ab7205..7261083 100644 --- a/arch/x86/kernel/acpi/wakeup_32.S +++ b/arch/x86/kernel/acpi/wakeup_32.S @@ -74,9 +74,7 @@ restore_registers: ENTRY(do_suspend_lowlevel) call save_processor_state call save_registers - pushl $3 - call acpi_enter_sleep_state - addl $4, %esp + call acpi_enter_s3 # In case of S3 failure, we'll emerge here. Jump # to ret_point to recover diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S index 8ea5164..014d1d2 100644 --- a/arch/x86/kernel/acpi/wakeup_64.S +++ b/arch/x86/kernel/acpi/wakeup_64.S @@ -71,9 +71,7 @@ ENTRY(do_suspend_lowlevel) movq %rsi, saved_rsi addq $8, %rsp - movl $3, %edi - xorl %eax, %eax - call acpi_enter_sleep_state + call acpi_enter_s3 /* in case something went wrong, restore the machine status and go on */ jmp resume_point -- cgit v1.1 From ed8cd3b2cd61004cab85380c52b1817aca1ca49b Mon Sep 17 00:00:00 2001 From: Xi Wang Date: Mon, 23 Apr 2012 04:06:41 -0400 Subject: drm/i915: fix integer overflow in i915_gem_execbuffer2() On 32-bit systems, a large args->buffer_count from userspace via ioctl may overflow the allocation size, leading to out-of-bounds access. This vulnerability was introduced in commit 8408c282 ("drm/i915: First try a normal large kmalloc for the temporary exec buffers"). Signed-off-by: Xi Wang Reviewed-by: Chris Wilson Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index f51a696..7c50e58 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -1404,7 +1404,8 @@ i915_gem_execbuffer2(struct drm_device *dev, void *data, struct drm_i915_gem_exec_object2 *exec2_list = NULL; int ret; - if (args->buffer_count < 1) { + if (args->buffer_count < 1 || + args->buffer_count > UINT_MAX / sizeof(*exec2_list)) { DRM_DEBUG("execbuf2 with %d buffers\n", args->buffer_count); return -EINVAL; } -- cgit v1.1 From 44afb3a04391a74309d16180d1e4f8386fdfa745 Mon Sep 17 00:00:00 2001 From: Xi Wang Date: Mon, 23 Apr 2012 04:06:42 -0400 Subject: drm/i915: fix integer overflow in i915_gem_do_execbuffer() On 32-bit systems, a large args->num_cliprects from userspace via ioctl may overflow the allocation size, leading to out-of-bounds access. This vulnerability was introduced in commit 432e58ed ("drm/i915: Avoid allocation for execbuffer object list"). Signed-off-by: Xi Wang Reviewed-by: Chris Wilson Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 7c50e58..de43194 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -1133,6 +1133,11 @@ i915_gem_do_execbuffer(struct drm_device *dev, void *data, return -EINVAL; } + if (args->num_cliprects > UINT_MAX / sizeof(*cliprects)) { + DRM_DEBUG("execbuf with %u cliprects\n", + args->num_cliprects); + return -EINVAL; + } cliprects = kmalloc(args->num_cliprects * sizeof(*cliprects), GFP_KERNEL); if (cliprects == NULL) { -- cgit v1.1 From 98e5272fe70d62e193f70acf9951667beab27aba Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Mon, 23 Apr 2012 14:51:14 -0700 Subject: x32: Check __ILP32__ instead of __LP64__ for x32 Check __LP64__ isn't a reliable way to tell if we are compiling for x32 since __LP64__ isnn't specified by x86-64 psABI. Not all x86-64 compilers define __LP64__, which was added to GCC 3.3. The updated x32 psABI: https://sites.google.com/site/x32abi/documents definse _ILP32 and __ILP32__ for x32. GCC trunk and 4.7 branch have been updated to define _ILP32 and __ILP32__ for x32. This patch replaces __LP64__ check with __ILP32__. Signed-off-by: H.J. Lu Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/posix_types.h | 6 +++--- arch/x86/include/asm/sigcontext.h | 2 +- arch/x86/include/asm/unistd.h | 6 +++--- 3 files changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/x86/include/asm/posix_types.h b/arch/x86/include/asm/posix_types.h index 3427b77..7ef7c30 100644 --- a/arch/x86/include/asm/posix_types.h +++ b/arch/x86/include/asm/posix_types.h @@ -7,9 +7,9 @@ #else # ifdef __i386__ # include "posix_types_32.h" -# elif defined(__LP64__) -# include "posix_types_64.h" -# else +# elif defined(__ILP32__) # include "posix_types_x32.h" +# else +# include "posix_types_64.h" # endif #endif diff --git a/arch/x86/include/asm/sigcontext.h b/arch/x86/include/asm/sigcontext.h index 4a08538..5ca71c0 100644 --- a/arch/x86/include/asm/sigcontext.h +++ b/arch/x86/include/asm/sigcontext.h @@ -257,7 +257,7 @@ struct sigcontext { __u64 oldmask; __u64 cr2; struct _fpstate __user *fpstate; /* zero when no FPU context */ -#ifndef __LP64__ +#ifdef __ILP32__ __u32 __fpstate_pad; #endif __u64 reserved1[8]; diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h index 37cdc9d..4437001 100644 --- a/arch/x86/include/asm/unistd.h +++ b/arch/x86/include/asm/unistd.h @@ -63,10 +63,10 @@ #else # ifdef __i386__ # include -# elif defined(__LP64__) -# include -# else +# elif defined(__ILP32__) # include +# else +# include # endif #endif -- cgit v1.1 From 2b7b9a7d6c676691cd746a654e2c3b06a6feb9ba Mon Sep 17 00:00:00 2001 From: David Brown Date: Mon, 23 Apr 2012 15:34:20 -0700 Subject: ARM: msm: Fix gic irqdomain support As of commit 75294957be1dee7d22dd7d90bd31334ba410e836 Author: Grant Likely Date: Tue Feb 14 14:06:57 2012 -0700 irq_domain: Remove 'new' irq_domain in favour of the ppc one the ARM gic controller uses proper irq domains. Fix the MSM gic initialization and DT so that it works again. Signed-off-by: David Brown Acked-by: Grant Likely --- arch/arm/boot/dts/msm8660-surf.dts | 4 ++-- arch/arm/mach-msm/board-msm8x60.c | 25 +++++++++++++++---------- 2 files changed, 17 insertions(+), 12 deletions(-) diff --git a/arch/arm/boot/dts/msm8660-surf.dts b/arch/arm/boot/dts/msm8660-surf.dts index 15ded0d..45bc4bb 100644 --- a/arch/arm/boot/dts/msm8660-surf.dts +++ b/arch/arm/boot/dts/msm8660-surf.dts @@ -10,7 +10,7 @@ intc: interrupt-controller@02080000 { compatible = "qcom,msm-8660-qgic"; interrupt-controller; - #interrupt-cells = <1>; + #interrupt-cells = <3>; reg = < 0x02080000 0x1000 >, < 0x02081000 0x1000 >; }; @@ -19,6 +19,6 @@ compatible = "qcom,msm-hsuart", "qcom,msm-uart"; reg = <0x19c40000 0x1000>, <0x19c00000 0x1000>; - interrupts = <195>; + interrupts = <0 195 0x0>; }; }; diff --git a/arch/arm/mach-msm/board-msm8x60.c b/arch/arm/mach-msm/board-msm8x60.c index 962e711..fb3496a 100644 --- a/arch/arm/mach-msm/board-msm8x60.c +++ b/arch/arm/mach-msm/board-msm8x60.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -49,10 +50,22 @@ static void __init msm8x60_map_io(void) msm_map_msm8x60_io(); } +#ifdef CONFIG_OF +static struct of_device_id msm_dt_gic_match[] __initdata = { + { .compatible = "qcom,msm-8660-qgic", .data = gic_of_init }, + {} +}; +#endif + static void __init msm8x60_init_irq(void) { - gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE, - (void *)MSM_QGIC_CPU_BASE); + if (!of_have_populated_dt()) + gic_init(0, GIC_PPI_START, MSM_QGIC_DIST_BASE, + (void *)MSM_QGIC_CPU_BASE); +#ifdef CONFIG_OF + else + of_irq_init(msm_dt_gic_match); +#endif /* Edge trigger PPIs except AVS_SVICINT and AVS_SVICINTSWDONE */ writel(0xFFFFD7FF, MSM_QGIC_DIST_BASE + GIC_DIST_CONFIG + 4); @@ -73,16 +86,8 @@ static struct of_dev_auxdata msm_auxdata_lookup[] __initdata = { {} }; -static struct of_device_id msm_dt_gic_match[] __initdata = { - { .compatible = "qcom,msm-8660-qgic", }, - {} -}; - static void __init msm8x60_dt_init(void) { - irq_domain_generate_simple(msm_dt_gic_match, MSM8X60_QGIC_DIST_PHYS, - GIC_SPI_START); - if (of_machine_is_compatible("qcom,msm8660-surf")) { printk(KERN_INFO "Init surf UART registers\n"); msm8x60_init_uart12dm(); -- cgit v1.1 From d643bdca8ab9cd333da1b68267d0e47328e56f56 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Mon, 23 Apr 2012 16:29:18 -0700 Subject: asm-generic: Allow overriding clock_t and add attributes to siginfo_t For the particular issue of x32, which shares code with i386 in the handling of compat_siginfo_t, the use of a 64-bit clock_t bumps the sigchld structure out of alignment, which triggers a messy cascade of padding. This was already handled on the kernel compat side, but it needs handling on the user space side, which uses the generic header. To make that possible: 1. Allow __kernel_clock_t to be overridden in struct siginfo; 2. Allow there to be attributes added to struct siginfo. Reported-by: H.J. Lu Cc: Bruce J. Beare Cc: Arnd Bergmann Link: http://lkml.kernel.org/r/CAMe9rOqF6Kh6-NK7oP0Fpzkd4SBAWU%2BG53hwBbSD4iA2UzyxuA@mail.gmail.com Signed-off-by: H. Peter Anvin --- include/asm-generic/siginfo.h | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/include/asm-generic/siginfo.h b/include/asm-generic/siginfo.h index 0dd4e87..5e5e386 100644 --- a/include/asm-generic/siginfo.h +++ b/include/asm-generic/siginfo.h @@ -35,6 +35,14 @@ typedef union sigval { #define __ARCH_SI_BAND_T long #endif +#ifndef __ARCH_SI_CLOCK_T +#define __ARCH_SI_CLOCK_T __kernel_clock_t +#endif + +#ifndef __ARCH_SI_ATTRIBUTES +#define __ARCH_SI_ATTRIBUTES +#endif + #ifndef HAVE_ARCH_SIGINFO_T typedef struct siginfo { @@ -72,8 +80,8 @@ typedef struct siginfo { __kernel_pid_t _pid; /* which child */ __ARCH_SI_UID_T _uid; /* sender's uid */ int _status; /* exit code */ - __kernel_clock_t _utime; - __kernel_clock_t _stime; + __ARCH_SI_CLOCK_T _utime; + __ARCH_SI_CLOCK_T _stime; } _sigchld; /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */ @@ -91,7 +99,7 @@ typedef struct siginfo { int _fd; } _sigpoll; } _sifields; -} siginfo_t; +} __ARCH_SI_ATTRIBUTES siginfo_t; #endif -- cgit v1.1 From a9ad8526bb1af0741a5c0e01155dac08e7bdde60 Mon Sep 17 00:00:00 2001 From: Jonathan Brassow Date: Tue, 24 Apr 2012 10:23:13 +1000 Subject: DM RAID: Use safe version of rdev_for_each Fix segfault caused by using rdev_for_each instead of rdev_for_each_safe Commit dafb20fa34320a472deb7442f25a0c086e0feb33 mistakenly replaced a safe iterator with an unsafe one when making some macro changes. Signed-off-by: Jonathan Brassow Signed-off-by: NeilBrown --- drivers/md/dm-raid.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index b0ba524..68965e6 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -859,7 +859,7 @@ static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs) int ret; unsigned redundancy = 0; struct raid_dev *dev; - struct md_rdev *rdev, *freshest; + struct md_rdev *rdev, *tmp, *freshest; struct mddev *mddev = &rs->md; switch (rs->raid_type->level) { @@ -877,7 +877,7 @@ static int analyse_superblocks(struct dm_target *ti, struct raid_set *rs) } freshest = NULL; - rdev_for_each(rdev, mddev) { + rdev_for_each_safe(rdev, tmp, mddev) { if (!rdev->meta_bdev) continue; -- cgit v1.1 From ed209584c38fb74b7eecc03e5b1bfe674e591bd8 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 24 Apr 2012 10:23:14 +1000 Subject: md: don't call ->add_disk unless there is good reason. Commit 7bfec5f35c68121e7b18 md/raid5: If there is a spare and a want_replacement device, start replacement. cause md_check_recovery to call ->add_disk much more often. Instead of only when the array is degraded, it is now called whenever md_check_recovery finds anything useful to do, which includes updating the metadata for clean<->dirty transition. This causes unnecessary work, and causes info messages from ->add_disk to be reported much too often. So refine md_check_recovery to only do any actual recovery checking (including ->add_disk) if MD_RECOVERY_NEEDED is set. This fix is suitable for 3.3.y: Cc: stable@vger.kernel.org Reported-by: Jan Ceuleers Signed-off-by: NeilBrown --- drivers/md/md.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index b572e1e..8beb19c 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -7560,14 +7560,14 @@ void md_check_recovery(struct mddev *mddev) * any transients in the value of "sync_action". */ set_bit(MD_RECOVERY_RUNNING, &mddev->recovery); - clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery); /* Clear some bits that don't mean anything, but * might be left set */ clear_bit(MD_RECOVERY_INTR, &mddev->recovery); clear_bit(MD_RECOVERY_DONE, &mddev->recovery); - if (test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) + if (!test_and_clear_bit(MD_RECOVERY_NEEDED, &mddev->recovery) || + test_bit(MD_RECOVERY_FROZEN, &mddev->recovery)) goto unlock; /* no recovery is running. * remove any failed drives, then -- cgit v1.1 From 30b8aa9172dfeaac6d77897c67ee9f9fc574cdbb Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Tue, 24 Apr 2012 10:23:16 +1000 Subject: md: fix possible corruption of array metadata on shutdown. commit c744a65c1e2d59acc54333ce8 md: don't set md arrays to readonly on shutdown. removed the possibility of a 'BUG' when data is written to an array that has just been switched to read-only, but also introduced the possibility that the array metadata could be corrupted. If, when md_notify_reboot gets the mddev lock, the array is in a state where it is assembled but hasn't been started (as can happen if the personality module is not available, or in other unusual situations), then incorrect metadata will be written out making it impossible to re-assemble the array. So only call __md_stop_writes() if the array has actually been activated. This patch is needed for any stable kernel which has had the above commit applied. Cc: stable@vger.kernel.org Reported-by: Christoph Nelles Signed-off-by: NeilBrown --- drivers/md/md.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 8beb19c..477eb2e 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8140,7 +8140,8 @@ static int md_notify_reboot(struct notifier_block *this, for_each_mddev(mddev, tmp) { if (mddev_trylock(mddev)) { - __md_stop_writes(mddev); + if (mddev->pers) + __md_stop_writes(mddev); mddev->safemode = 2; mddev_unlock(mddev); } -- cgit v1.1 From 89b8835ec865dddd6673a8dd7003581bf2377176 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Mon, 23 Apr 2012 16:34:12 -0700 Subject: x32, siginfo: Provide proper overrides for x32 siginfo_t Provide the proper override macros for x32 siginfo_t. The combination of a special type here and an overall alignment constraint actually ends up with all the types being properly aligned, but the hack is needed to keep the substructures inside siginfo_t from adding padding. Note: use __attribute__((aligned())) since __aligned() is not exported to user space. [ v2: fix stray semicolon ] Reported-by: H.J. Lu Cc: Bruce J. Beare Cc: Arnd Bergmann Link: http://lkml.kernel.org/r/CAMe9rOqF6Kh6-NK7oP0Fpzkd4SBAWU%2BG53hwBbSD4iA2UzyxuA@mail.gmail.com Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/siginfo.h | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/arch/x86/include/asm/siginfo.h b/arch/x86/include/asm/siginfo.h index fc1aa55..34c47b3 100644 --- a/arch/x86/include/asm/siginfo.h +++ b/arch/x86/include/asm/siginfo.h @@ -2,7 +2,13 @@ #define _ASM_X86_SIGINFO_H #ifdef __x86_64__ -# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) +# ifdef __ILP32__ /* x32 */ +typedef long long __kernel_si_clock_t __attribute__((aligned(4))); +# define __ARCH_SI_CLOCK_T __kernel_si_clock_t +# define __ARCH_SI_ATTRIBUTES __attribute__((aligned(8))) +# else /* x86-64 */ +# define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) +# endif #endif #include -- cgit v1.1 From aca50bd3b4c4bb5528a1878158ba7abce41de534 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Mon, 23 Apr 2012 11:14:50 -0700 Subject: mm: fix s390 BUG by __set_page_dirty_no_writeback on swap Mel reports a BUG_ON(slot == NULL) in radix_tree_tag_set() on s390 3.0.13: called from __set_page_dirty_nobuffers() when page_remove_rmap() tries to transfer dirty flag from s390 storage key to struct page and radix_tree. That would be because of reclaim's shrink_page_list() calling add_to_swap() on this page at the same time: first PageSwapCache is set (causing page_mapping(page) to appear as &swapper_space), then page->private set, then tree_lock taken, then page inserted into radix_tree - so there's an interval before taking the lock when the radix_tree slot is empty. We could fix this by moving __add_to_swap_cache()'s spin_lock_irq up before the SetPageSwapCache. But a better fix is simply to do what's five years overdue: Ken Chen introduced __set_page_dirty_no_writeback() (if !PageDirty TestSetPageDirty) for tmpfs to skip all the radix_tree overhead, and swap is just the same - it ignores the radix_tree tag, and does not participate in dirty page accounting, so should be using __set_page_dirty_no_writeback() too. s390 testing now confirms that this does indeed fix the problem. Reported-by: Mel Gorman Signed-off-by: Hugh Dickins Acked-by: Mel Gorman Cc: Andrew Morton Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Rik van Riel Cc: Ken Chen Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- mm/swap_state.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/swap_state.c b/mm/swap_state.c index 9d3dd37..4c5ff7f 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -26,7 +26,7 @@ */ static const struct address_space_operations swap_aops = { .writepage = swap_writepage, - .set_page_dirty = __set_page_dirty_nobuffers, + .set_page_dirty = __set_page_dirty_no_writeback, .migratepage = migrate_page, }; -- cgit v1.1 From 99aa78466777083255b876293e9e83dec7cd809a Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Fri, 13 Apr 2012 10:27:35 +0800 Subject: jbd2: use GFP_NOFS for blkdev_issue_flush flush request is issued in transaction commit code path, so looks using GFP_KERNEL to allocate memory for flush request bio falls into the classic deadlock issue. I saw btrfs and dm get it right, but ext4, xfs and md are using GFP. Signed-off-by: Shaohua Li Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara Cc: stable@vger.kernel.org --- fs/jbd2/commit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 806525a..840f70f 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -723,7 +723,7 @@ start_journal_io: if (commit_transaction->t_need_data_flush && (journal->j_fs_dev != journal->j_dev) && (journal->j_flags & JBD2_BARRIER)) - blkdev_issue_flush(journal->j_fs_dev, GFP_KERNEL, NULL); + blkdev_issue_flush(journal->j_fs_dev, GFP_NOFS, NULL); /* Done it all: now write the commit record asynchronously. */ if (JBD2_HAS_INCOMPAT_FEATURE(journal, @@ -859,7 +859,7 @@ wait_for_iobuf: if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT) && journal->j_flags & JBD2_BARRIER) { - blkdev_issue_flush(journal->j_dev, GFP_KERNEL, NULL); + blkdev_issue_flush(journal->j_dev, GFP_NOFS, NULL); } if (err) -- cgit v1.1 From db7e5c668e1b16061fe2d94d3cba022dd360c5d4 Mon Sep 17 00:00:00 2001 From: Eldad Zack Date: Sun, 22 Apr 2012 17:50:52 +0200 Subject: super.c: unused variable warning without CONFIG_QUOTA MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit sb info is only checked with quota support. fs/ext4/super.c: In function ‘parse_options’: fs/ext4/super.c:1600:23: warning: unused variable ‘sbi’ [-Wunused-variable] Signed-off-by: Eldad Zack Signed-off-by: Theodore Ts'o --- fs/ext4/super.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 6da1935..e1fb1d5 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1597,7 +1597,9 @@ static int parse_options(char *options, struct super_block *sb, unsigned int *journal_ioprio, int is_remount) { +#ifdef CONFIG_QUOTA struct ext4_sb_info *sbi = EXT4_SB(sb); +#endif char *p; substring_t args[MAX_OPT_ARGS]; int token; -- cgit v1.1 From a881e963c7fe1f226e991ee9bbe8907acda93294 Mon Sep 17 00:00:00 2001 From: "Peter Huang (Peng)" Date: Thu, 19 Apr 2012 20:12:51 +0000 Subject: set fake_rtable's dst to NULL to avoid kernel Oops bridge: set fake_rtable's dst to NULL to avoid kernel Oops when bridge is deleted before tap/vif device's delete, kernel may encounter an oops because of NULL reference to fake_rtable's dst. Set fake_rtable's dst to NULL before sending packets out can solve this problem. v4 reformat, change br_drop_fake_rtable(skb) to {} v3 enrich commit header v2 introducing new flag DST_FAKE_RTABLE to dst_entry struct. [ Use "do { } while (0)" for nop br_drop_fake_rtable() implementation -DaveM ] Acked-by: Eric Dumazet Signed-off-by: Peter Huang Signed-off-by: David S. Miller --- include/linux/netfilter_bridge.h | 9 +++++++++ include/net/dst.h | 1 + net/bridge/br_forward.c | 1 + net/bridge/br_netfilter.c | 8 ++------ 4 files changed, 13 insertions(+), 6 deletions(-) diff --git a/include/linux/netfilter_bridge.h b/include/linux/netfilter_bridge.h index 0ddd161..31d2844 100644 --- a/include/linux/netfilter_bridge.h +++ b/include/linux/netfilter_bridge.h @@ -104,9 +104,18 @@ struct bridge_skb_cb { } daddr; }; +static inline void br_drop_fake_rtable(struct sk_buff *skb) +{ + struct dst_entry *dst = skb_dst(skb); + + if (dst && (dst->flags & DST_FAKE_RTABLE)) + skb_dst_drop(skb); +} + #else #define nf_bridge_maybe_copy_header(skb) (0) #define nf_bridge_pad(skb) (0) +#define br_drop_fake_rtable(skb) do { } while (0) #endif /* CONFIG_BRIDGE_NETFILTER */ #endif /* __KERNEL__ */ diff --git a/include/net/dst.h b/include/net/dst.h index ff4da42..bed833d 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -59,6 +59,7 @@ struct dst_entry { #define DST_NOCACHE 0x0010 #define DST_NOCOUNT 0x0020 #define DST_NOPEER 0x0040 +#define DST_FAKE_RTABLE 0x0080 short error; short obsolete; diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index 61f6534..a2098e3 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -47,6 +47,7 @@ int br_dev_queue_push_xmit(struct sk_buff *skb) kfree_skb(skb); } else { skb_push(skb, ETH_HLEN); + br_drop_fake_rtable(skb); dev_queue_xmit(skb); } diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c index dec4f38..d7f49b6 100644 --- a/net/bridge/br_netfilter.c +++ b/net/bridge/br_netfilter.c @@ -156,7 +156,7 @@ void br_netfilter_rtable_init(struct net_bridge *br) rt->dst.dev = br->dev; rt->dst.path = &rt->dst; dst_init_metrics(&rt->dst, br_dst_default_metrics, true); - rt->dst.flags = DST_NOXFRM | DST_NOPEER; + rt->dst.flags = DST_NOXFRM | DST_NOPEER | DST_FAKE_RTABLE; rt->dst.ops = &fake_dst_ops; } @@ -694,11 +694,7 @@ static unsigned int br_nf_local_in(unsigned int hook, struct sk_buff *skb, const struct net_device *out, int (*okfn)(struct sk_buff *)) { - struct rtable *rt = skb_rtable(skb); - - if (rt && rt == bridge_parent_rtable(in)) - skb_dst_drop(skb); - + br_drop_fake_rtable(skb); return NF_ACCEPT; } -- cgit v1.1 From 9bbf56609d304e8aae2076610d938206453035de Mon Sep 17 00:00:00 2001 From: Stephane Fillod Date: Fri, 20 Apr 2012 09:39:23 +0000 Subject: net: usb: smsc95xx: fix mtu Make smsc95xx recalculate the hard_mtu after adjusting the hard_header_len. Without this, usbnet adjusts the MTU down to 1488 bytes, and the host is unable to receive standard 1500-byte frames from the device. Inspired by same fix on cdc_eem 78fb72f7936c01d5b426c03a691eca082b03f2b9. Tested on ARM/Beagle. Signed-off-by: Stephane Fillod Signed-off-by: David S. Miller --- drivers/net/usb/smsc95xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 5f19f84..53a1ba5 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1017,6 +1017,7 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->ethtool_ops = &smsc95xx_ethtool_ops; dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC95XX_TX_OVERHEAD_CSUM; + dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; } -- cgit v1.1 From 7e665afbb561544d6fcc3334285db5809a38d2c8 Mon Sep 17 00:00:00 2001 From: Ursula Braun Date: Sun, 22 Apr 2012 21:21:41 +0000 Subject: qeth: allow change of blkt default values There exist qeth sysfs blkt attributes to change the default blkt values. But blkt changes are reset during online setting due to a 2nd invocation of qeth_determine_capabilites(). This patch makes sure blkt default values are configured during 1st run of qeth_determine_capabilities() only. Thus blkt changes are kept during online setting. Signed-off-by: Ursula Braun Reported-by: Horst Hartmann Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 120955c..d78d0ce 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4540,7 +4540,8 @@ static void qeth_determine_capabilities(struct qeth_card *card) goto out_offline; } qeth_configure_unitaddr(card, prcd); - qeth_configure_blkt_default(card, prcd); + if (ddev_offline) + qeth_configure_blkt_default(card, prcd); kfree(prcd); rc = qdio_get_ssqd_desc(ddev, &card->ssqd); -- cgit v1.1 From e6e056baa24b48642b86129e8a3fdaa98f2fe947 Mon Sep 17 00:00:00 2001 From: Stefan Raspl Date: Sun, 22 Apr 2012 21:21:42 +0000 Subject: qeth: Use blkt defaults for OSA Express 4 The previous blkt defaults for OSA Express 4 cards produced inadequate performance for streaming workloads. The present patch will apply a set of more appropriate defaults. Signed-off-by: Stefan Raspl Reviewed-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- drivers/s390/net/qeth_core_main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index d78d0ce..8334dad 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -1672,7 +1672,8 @@ static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd) { QETH_DBF_TEXT(SETUP, 2, "cfgblkt"); - if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && prcd[76] == 0xF5) { + if (prcd[74] == 0xF0 && prcd[75] == 0xF0 && + (prcd[76] == 0xF5 || prcd[76] == 0xF6)) { card->info.blkt.time_total = 250; card->info.blkt.inter_packet = 5; card->info.blkt.inter_packet_jumbo = 15; -- cgit v1.1 From c2f1244b86492b6cc89202f3f9ed43c88fb3e79d Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Mon, 23 Apr 2012 03:46:29 +0000 Subject: ehea: only register irq after setting up ports If we receive an interrupt too early before we set up ports in the probe function, there won't be any port ready to handle it. Only registering the irq after the ports are setup fixes the problem, and works fine without losing any interrupts. This causes crashes in some situations: [c000000f7ff7fd60] d000000008e223f0 .ehea_neq_tasklet+0x78/0x148 [ehea] [c000000f7ff7fe00] c0000000000b6cac .tasklet_hi_action+0xdc/0x210 [c000000f7ff7fea0] c0000000000b7cc8 .__do_softirq+0x178/0x300 [c000000f7ff7ff90] c000000000022694 .call_do_softirq+0x14/0x24 [c000000f68ee7900] c000000000010e04 .do_softirq+0xec/0x110 [c000000f68ee79a0] c0000000000b789c .irq_exit+0xac/0xe0 [c000000f68ee7a20] c0000000000110bc .do_IRQ+0x114/0x2a8 [c000000f68ee7ae0] c00000000000553c hardware_interrupt_entry+0x18/0x1c Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ehea/ehea_main.c | 30 ++++++++++++++++++------------ 1 file changed, 18 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index 3516e17..acf34b6 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -3261,6 +3261,7 @@ static int __devinit ehea_probe_adapter(struct platform_device *dev, struct ehea_adapter *adapter; const u64 *adapter_handle; int ret; + int i; if (!dev || !dev->dev.of_node) { pr_err("Invalid ibmebus device probed\n"); @@ -3314,17 +3315,9 @@ static int __devinit ehea_probe_adapter(struct platform_device *dev, tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet, (unsigned long)adapter); - ret = ibmebus_request_irq(adapter->neq->attr.ist1, - ehea_interrupt_neq, IRQF_DISABLED, - "ehea_neq", adapter); - if (ret) { - dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); - goto out_kill_eq; - } - ret = ehea_create_device_sysfs(dev); if (ret) - goto out_free_irq; + goto out_kill_eq; ret = ehea_setup_ports(adapter); if (ret) { @@ -3332,15 +3325,28 @@ static int __devinit ehea_probe_adapter(struct platform_device *dev, goto out_rem_dev_sysfs; } + ret = ibmebus_request_irq(adapter->neq->attr.ist1, + ehea_interrupt_neq, IRQF_DISABLED, + "ehea_neq", adapter); + if (ret) { + dev_err(&dev->dev, "requesting NEQ IRQ failed\n"); + goto out_shutdown_ports; + } + + ret = 0; goto out; +out_shutdown_ports: + for (i = 0; i < EHEA_MAX_PORTS; i++) + if (adapter->port[i]) { + ehea_shutdown_single_port(adapter->port[i]); + adapter->port[i] = NULL; + } + out_rem_dev_sysfs: ehea_remove_device_sysfs(dev); -out_free_irq: - ibmebus_free_irq(adapter->neq->attr.ist1, adapter); - out_kill_eq: ehea_destroy_eq(adapter->neq); -- cgit v1.1 From 1ab8be4a14409c55050db69271631afebac29b5a Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Mon, 23 Apr 2012 12:06:43 +0000 Subject: net/davinci_emac: fix failing PHY connect attempts PHY connect attempts fail if no PHY id is specified in the emac platform data and another mdio bus has been registered before 'davinci_mdio' bus. In this case when configuring the interface, there will be an attempt to connect to already attached PHY on the previously registered mdio bus: net eth1: PHY already attached net eth1: could not connect to phy smsc911x-0:01 IP-Config: Failed to open eth1 IP-Config: Device `eth1' not found Fix this by modifying match_first_device() to match first PHY device on 'davinci_mdio' bus. Signed-off-by: Anatolij Gustschin Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_emac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index 174a334..08aff1a 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1511,7 +1511,7 @@ static int emac_devioctl(struct net_device *ndev, struct ifreq *ifrq, int cmd) static int match_first_device(struct device *dev, void *data) { - return 1; + return !strncmp(dev_name(dev), "davinci_mdio", 12); } /** -- cgit v1.1 From 2a5809499e35b53a6044fd34e72b242688b7a862 Mon Sep 17 00:00:00 2001 From: Ingo van Lil Date: Mon, 23 Apr 2012 22:05:38 +0000 Subject: asix: Fix tx transfer padding for full-speed USB The asix.c USB Ethernet driver avoids ending a tx transfer with a zero- length packet by appending a four-byte padding to transfers whose length is a multiple of maxpacket. However, the hard-coded 512 byte maxpacket length is valid for high-speed USB only; full-speed USB uses 64 byte packets. Signed-off-by: Ingo van Lil Signed-off-by: David S. Miller --- drivers/net/usb/asix.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c index 5ee032c..42b5151 100644 --- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -355,7 +355,7 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, u32 packet_len; u32 padbytes = 0xffff0000; - padlen = ((skb->len + 4) % 512) ? 0 : 4; + padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4; if ((!skb_cloned(skb)) && ((headroom + tailroom) >= (4 + padlen))) { @@ -377,7 +377,7 @@ static struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb, cpu_to_le32s(&packet_len); skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len)); - if ((skb->len % 512) == 0) { + if (padlen) { cpu_to_le32s(&padbytes); memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes)); skb_put(skb, sizeof(padbytes)); -- cgit v1.1 From ddb6706af3cd372194cecd2cc61950519df620d7 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Tue, 24 Apr 2012 01:11:09 -0300 Subject: ASoC: dt: sgtl5000.txt: Add description for 'reg' field Add description for 'reg' field. Signed-off-by: Fabio Estevam Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/sound/sgtl5000.txt | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/sgtl5000.txt b/Documentation/devicetree/bindings/sound/sgtl5000.txt index 2c3cd41..9cc4444 100644 --- a/Documentation/devicetree/bindings/sound/sgtl5000.txt +++ b/Documentation/devicetree/bindings/sound/sgtl5000.txt @@ -3,6 +3,8 @@ Required properties: - compatible : "fsl,sgtl5000". +- reg : the I2C address of the device + Example: codec: sgtl5000@0a { -- cgit v1.1 From c34ce320d9fe328e3272def20b152f39ccfa045e Mon Sep 17 00:00:00 2001 From: Richard Zhao Date: Tue, 24 Apr 2012 15:24:43 +0800 Subject: ASoC: core: check of_property_count_strings failure Signed-off-by: Richard Zhao Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/soc-core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 3a4e93e..b390f00 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3631,10 +3631,10 @@ int snd_soc_of_parse_audio_routing(struct snd_soc_card *card, int i, ret; num_routes = of_property_count_strings(np, propname); - if (num_routes & 1) { + if (num_routes < 0 || num_routes & 1) { dev_err(card->dev, - "Property '%s's length is not even\n", - propname); + "Property '%s' does not exist or its length is not even\n", + propname); return -EINVAL; } num_routes /= 2; -- cgit v1.1 From 4c569a72c30dfee9b5133284aba67e3aa0c9505d Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Tue, 10 Apr 2012 14:45:24 -0400 Subject: GFS2: Instruct DLM to avoid queue convert slowdown This patch instructs DLM to prevent an "in place" conversion, where the lock just stays on the granted queue, and instead forces the conversion to the back of the convert queue. This is done on upward conversions only. This is useful in cases where, for example, a lock is frequently needed in PR on one node, but another node needs it temporarily in EX to update it. This may happen, for example, when the rindex is being updated by gfs2_grow. The gfs2_grow needs to have the lock in EX, but the other nodes need to re-read it to retrieve the updates. The glock is already granted in PR on the non-growing nodes, so this prevents them from continually re-granting the lock in PR, and forces the EX from gfs2_grow to go through. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- fs/gfs2/lock_dlm.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c index f8411bd..5f5e70e 100644 --- a/fs/gfs2/lock_dlm.c +++ b/fs/gfs2/lock_dlm.c @@ -200,10 +200,11 @@ static int make_mode(const unsigned int lmstate) return -1; } -static u32 make_flags(const u32 lkid, const unsigned int gfs_flags, +static u32 make_flags(struct gfs2_glock *gl, const unsigned int gfs_flags, const int req) { u32 lkf = DLM_LKF_VALBLK; + u32 lkid = gl->gl_lksb.sb_lkid; if (gfs_flags & LM_FLAG_TRY) lkf |= DLM_LKF_NOQUEUE; @@ -227,8 +228,11 @@ static u32 make_flags(const u32 lkid, const unsigned int gfs_flags, BUG(); } - if (lkid != 0) + if (lkid != 0) { lkf |= DLM_LKF_CONVERT; + if (test_bit(GLF_BLOCKING, &gl->gl_flags)) + lkf |= DLM_LKF_QUECVT; + } return lkf; } @@ -250,7 +254,7 @@ static int gdlm_lock(struct gfs2_glock *gl, unsigned int req_state, char strname[GDLM_STRNAME_BYTES] = ""; req = make_mode(req_state); - lkf = make_flags(gl->gl_lksb.sb_lkid, flags, req); + lkf = make_flags(gl, flags, req); gfs2_glstats_inc(gl, GFS2_LKS_DCOUNT); gfs2_sbstats_inc(gl, GFS2_LKS_DCOUNT); if (gl->gl_lksb.sb_lkid) { -- cgit v1.1 From 16cde9931bcd8d8ca968ef1cded02684ea040374 Mon Sep 17 00:00:00 2001 From: Szymon Janc Date: Fri, 13 Apr 2012 12:32:42 +0200 Subject: Bluetooth: Fix missing break in hci_cmd_complete_evt Command complete event for HCI_OP_USER_PASSKEY_NEG_REPLY would result in calling handler function also for HCI_OP_LE_SET_SCAN_PARAM. This could result in undefined behaviour. Signed-off-by: Szymon Janc Signed-off-by: Gustavo Padovan --- net/bluetooth/hci_event.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 6a72eae..7f87a70 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -2314,6 +2314,7 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk case HCI_OP_USER_PASSKEY_NEG_REPLY: hci_cc_user_passkey_neg_reply(hdev, skb); + break; case HCI_OP_LE_SET_SCAN_PARAM: hci_cc_le_set_scan_param(hdev, skb); -- cgit v1.1 From 985140369be1e886754d8ac0375dd64e4f727311 Mon Sep 17 00:00:00 2001 From: Steven Harms Date: Fri, 13 Apr 2012 14:45:55 -0400 Subject: Add Foxconn / Hon Hai IDs for btusb module This change adds 0x0489:0xe033 to the btusb module. This bluetooth usb device is integrated in the Acer TimelineX AS4830TG-6808 notebook. Output from /sys/kernel/debug/usb/devices: T: Bus=01 Lev=02 Prnt=02 Port=05 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0489 ProdID=e033 Rev= 2.29 S: Manufacturer=Broadcom Corp S: Product=Acer Module S: SerialNumber=60D819F74101 C:* #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr= 0mA I:* If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=ff(vend.) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 32 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 32 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 64 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 64 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 64 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 64 Ivl=1ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) E: Ad=84(I) Atr=02(Bulk) MxPS= 32 Ivl=0ms E: Ad=04(O) Atr=02(Bulk) MxPS= 32 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 0 Cls=fe(app. ) Sub=01 Prot=01 Driver=(none) Signed-off-by: Steven Harms Signed-off-by: Gustavo Padovan --- drivers/bluetooth/btusb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 93cc828..9217121 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -108,6 +108,9 @@ static struct usb_device_id btusb_table[] = { { USB_DEVICE(0x0a5c, 0x21f3) }, { USB_DEVICE(0x413c, 0x8197) }, + /* Foxconn - Hon Hai */ + { USB_DEVICE(0x0489, 0xe033) }, + { } /* Terminating entry */ }; -- cgit v1.1 From 3c7c87fd5bd71f57c68a64d11a15170d0dc4f7aa Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 24 Apr 2012 15:28:14 +0100 Subject: CIFS: Show backupuid/gid in /proc/mounts Show backupuid/backupgid in /proc/mounts for cifs shares mounted with the backupuid/backupgid feature. Also consolidate the two separate checks for pvolume_info->backupuid_specified into a single if condition in cifs_setup_cifs_sb(). Signed-off-by: Sachin Prabhu Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 4 ++++ fs/cifs/connect.c | 12 ++++++------ 2 files changed, 10 insertions(+), 6 deletions(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index d342128..ea8eb92 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -434,6 +434,10 @@ cifs_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",noperm"); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) seq_printf(s, ",strictcache"); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPUID) + seq_printf(s, ",backupuid=%u", cifs_sb->mnt_backupuid); + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) + seq_printf(s, ",backupgid=%u", cifs_sb->mnt_backupgid); seq_printf(s, ",rsize=%d", cifs_sb->rsize); seq_printf(s, ",wsize=%d", cifs_sb->wsize); diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index f31dc9a..f4d381e 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3228,10 +3228,6 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, cifs_sb->mnt_uid = pvolume_info->linux_uid; cifs_sb->mnt_gid = pvolume_info->linux_gid; - if (pvolume_info->backupuid_specified) - cifs_sb->mnt_backupuid = pvolume_info->backupuid; - if (pvolume_info->backupgid_specified) - cifs_sb->mnt_backupgid = pvolume_info->backupgid; cifs_sb->mnt_file_mode = pvolume_info->file_mode; cifs_sb->mnt_dir_mode = pvolume_info->dir_mode; cFYI(1, "file mode: 0x%hx dir mode: 0x%hx", @@ -3262,10 +3258,14 @@ void cifs_setup_cifs_sb(struct smb_vol *pvolume_info, cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_RWPIDFORWARD; if (pvolume_info->cifs_acl) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_ACL; - if (pvolume_info->backupuid_specified) + if (pvolume_info->backupuid_specified) { cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPUID; - if (pvolume_info->backupgid_specified) + cifs_sb->mnt_backupuid = pvolume_info->backupuid; + } + if (pvolume_info->backupgid_specified) { cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_CIFS_BACKUPGID; + cifs_sb->mnt_backupgid = pvolume_info->backupgid; + } if (pvolume_info->override_uid) cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_OVERR_UID; if (pvolume_info->override_gid) -- cgit v1.1 From 28f8881023c9713c303c0feda270929f9384c019 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 24 Apr 2012 15:28:30 +0100 Subject: Use correct conversion specifiers in cifs_show_options cifs_show_options uses the wrong conversion specifier for uid, gid, rsize & wsize. Correct this to %u to match it to the variable type 'unsigned integer'. Signed-off-by: Sachin Prabhu Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index ea8eb92..811245b 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -370,13 +370,13 @@ cifs_show_options(struct seq_file *s, struct dentry *root) (int)(srcaddr->sa_family)); } - seq_printf(s, ",uid=%d", cifs_sb->mnt_uid); + seq_printf(s, ",uid=%u", cifs_sb->mnt_uid); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_UID) seq_printf(s, ",forceuid"); else seq_printf(s, ",noforceuid"); - seq_printf(s, ",gid=%d", cifs_sb->mnt_gid); + seq_printf(s, ",gid=%u", cifs_sb->mnt_gid); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_OVERR_GID) seq_printf(s, ",forcegid"); else @@ -439,8 +439,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root) if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_CIFS_BACKUPGID) seq_printf(s, ",backupgid=%u", cifs_sb->mnt_backupgid); - seq_printf(s, ",rsize=%d", cifs_sb->rsize); - seq_printf(s, ",wsize=%d", cifs_sb->wsize); + seq_printf(s, ",rsize=%u", cifs_sb->rsize); + seq_printf(s, ",wsize=%u", cifs_sb->wsize); /* convert actimeo and display it in seconds */ seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); -- cgit v1.1 From 5ef4acd58ab2abd0dd0c8e3cacd61a0dc5d73646 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 23 Apr 2012 14:17:50 -0700 Subject: iwlwifi: fix hardware queue programming Newer devices have 20 (5000 series) or 30 (6000 series) hardware queues, rather than the 16 that 4965 had. This was added to the driver a long time ago, but improperly: the queue registers for the higher queues aren't just continuations of the registers for the first 16 queues, they are in other places. Therefore, the hardware would lock up when trying to activate queue 16 or above and the device would have to be restarted. Thanks goes to Emmanuel who identified this and told me how the queue programming should be done. Note that we don't use queues 20 and higher today and doing so needs more work than this. Cc: stable@vger.kernel.org Signed-off-by: Johannes Berg Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-fh.h | 24 +++++++++++++++++++----- drivers/net/wireless/iwlwifi/iwl-prph.h | 27 ++++++++++++++++++++++++--- 2 files changed, 43 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-fh.h b/drivers/net/wireless/iwlwifi/iwl-fh.h index 9020809..74bce97 100644 --- a/drivers/net/wireless/iwlwifi/iwl-fh.h +++ b/drivers/net/wireless/iwlwifi/iwl-fh.h @@ -104,15 +104,29 @@ * (see struct iwl_tfd_frame). These 16 pointer registers are offset by 0x04 * bytes from one another. Each TFD circular buffer in DRAM must be 256-byte * aligned (address bits 0-7 must be 0). + * Later devices have 20 (5000 series) or 30 (higher) queues, but the registers + * for them are in different places. * * Bit fields in each pointer register: * 27-0: TFD CB physical base address [35:8], must be 256-byte aligned */ -#define FH_MEM_CBBC_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x9D0) -#define FH_MEM_CBBC_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xA10) - -/* Find TFD CB base pointer for given queue (range 0-15). */ -#define FH_MEM_CBBC_QUEUE(x) (FH_MEM_CBBC_LOWER_BOUND + (x) * 0x4) +#define FH_MEM_CBBC_0_15_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x9D0) +#define FH_MEM_CBBC_0_15_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xA10) +#define FH_MEM_CBBC_16_19_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xBF0) +#define FH_MEM_CBBC_16_19_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xC00) +#define FH_MEM_CBBC_20_31_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xB20) +#define FH_MEM_CBBC_20_31_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xB80) + +/* Find TFD CB base pointer for given queue */ +static inline unsigned int FH_MEM_CBBC_QUEUE(unsigned int chnl) +{ + if (chnl < 16) + return FH_MEM_CBBC_0_15_LOWER_BOUND + 4 * chnl; + if (chnl < 20) + return FH_MEM_CBBC_16_19_LOWER_BOUND + 4 * (chnl - 16); + WARN_ON_ONCE(chnl >= 32); + return FH_MEM_CBBC_20_31_LOWER_BOUND + 4 * (chnl - 20); +} /** diff --git a/drivers/net/wireless/iwlwifi/iwl-prph.h b/drivers/net/wireless/iwlwifi/iwl-prph.h index 75dc20b..3b106929 100644 --- a/drivers/net/wireless/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/iwlwifi/iwl-prph.h @@ -223,12 +223,33 @@ #define SCD_AIT (SCD_BASE + 0x0c) #define SCD_TXFACT (SCD_BASE + 0x10) #define SCD_ACTIVE (SCD_BASE + 0x14) -#define SCD_QUEUE_WRPTR(x) (SCD_BASE + 0x18 + (x) * 4) -#define SCD_QUEUE_RDPTR(x) (SCD_BASE + 0x68 + (x) * 4) #define SCD_QUEUECHAIN_SEL (SCD_BASE + 0xe8) #define SCD_AGGR_SEL (SCD_BASE + 0x248) #define SCD_INTERRUPT_MASK (SCD_BASE + 0x108) -#define SCD_QUEUE_STATUS_BITS(x) (SCD_BASE + 0x10c + (x) * 4) + +static inline unsigned int SCD_QUEUE_WRPTR(unsigned int chnl) +{ + if (chnl < 20) + return SCD_BASE + 0x18 + chnl * 4; + WARN_ON_ONCE(chnl >= 32); + return SCD_BASE + 0x284 + (chnl - 20) * 4; +} + +static inline unsigned int SCD_QUEUE_RDPTR(unsigned int chnl) +{ + if (chnl < 20) + return SCD_BASE + 0x68 + chnl * 4; + WARN_ON_ONCE(chnl >= 32); + return SCD_BASE + 0x2B4 + (chnl - 20) * 4; +} + +static inline unsigned int SCD_QUEUE_STATUS_BITS(unsigned int chnl) +{ + if (chnl < 20) + return SCD_BASE + 0x10c + chnl * 4; + WARN_ON_ONCE(chnl >= 32); + return SCD_BASE + 0x384 + (chnl - 20) * 4; +} /*********************** END TX SCHEDULER *************************************/ -- cgit v1.1 From 78cbcf2b9dbe0565820dc7721316f9c401000a68 Mon Sep 17 00:00:00 2001 From: Meenakshi Venkataraman Date: Sun, 22 Apr 2012 07:55:27 -0700 Subject: iwlwifi: use correct released ucode version Report correctly the latest released version of the iwlwifi firmware for all iwlwifi-supported devices. Cc: stable@vger.kernel.org #3.3+ Signed-off-by: Meenakshi Venkataraman Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-1000.c | 8 ++++---- drivers/net/wireless/iwlwifi/iwl-2000.c | 16 ++++++++-------- drivers/net/wireless/iwlwifi/iwl-5000.c | 11 +++++++++-- drivers/net/wireless/iwlwifi/iwl-6000.c | 10 ++++++---- 4 files changed, 27 insertions(+), 18 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-1000.c b/drivers/net/wireless/iwlwifi/iwl-1000.c index 5b0d888..8d80e23 100644 --- a/drivers/net/wireless/iwlwifi/iwl-1000.c +++ b/drivers/net/wireless/iwlwifi/iwl-1000.c @@ -46,8 +46,8 @@ #include "iwl-prph.h" /* Highest firmware API version supported */ -#define IWL1000_UCODE_API_MAX 6 -#define IWL100_UCODE_API_MAX 6 +#define IWL1000_UCODE_API_MAX 5 +#define IWL100_UCODE_API_MAX 5 /* Oldest version we won't warn about */ #define IWL1000_UCODE_API_OK 5 @@ -226,5 +226,5 @@ const struct iwl_cfg iwl100_bg_cfg = { IWL_DEVICE_100, }; -MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL1000_MODULE_FIRMWARE(IWL1000_UCODE_API_OK)); +MODULE_FIRMWARE(IWL100_MODULE_FIRMWARE(IWL100_UCODE_API_OK)); diff --git a/drivers/net/wireless/iwlwifi/iwl-2000.c b/drivers/net/wireless/iwlwifi/iwl-2000.c index 5635b9e..ea10862 100644 --- a/drivers/net/wireless/iwlwifi/iwl-2000.c +++ b/drivers/net/wireless/iwlwifi/iwl-2000.c @@ -51,10 +51,10 @@ #define IWL135_UCODE_API_MAX 6 /* Oldest version we won't warn about */ -#define IWL2030_UCODE_API_OK 5 -#define IWL2000_UCODE_API_OK 5 -#define IWL105_UCODE_API_OK 5 -#define IWL135_UCODE_API_OK 5 +#define IWL2030_UCODE_API_OK 6 +#define IWL2000_UCODE_API_OK 6 +#define IWL105_UCODE_API_OK 6 +#define IWL135_UCODE_API_OK 6 /* Lowest firmware API version supported */ #define IWL2030_UCODE_API_MIN 5 @@ -328,7 +328,7 @@ const struct iwl_cfg iwl135_bgn_cfg = { .ht_params = &iwl2000_ht_params, }; -MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL135_MODULE_FIRMWARE(IWL135_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL2000_MODULE_FIRMWARE(IWL2000_UCODE_API_OK)); +MODULE_FIRMWARE(IWL2030_MODULE_FIRMWARE(IWL2030_UCODE_API_OK)); +MODULE_FIRMWARE(IWL105_MODULE_FIRMWARE(IWL105_UCODE_API_OK)); +MODULE_FIRMWARE(IWL135_MODULE_FIRMWARE(IWL135_UCODE_API_OK)); diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c index a805e97..de0920c 100644 --- a/drivers/net/wireless/iwlwifi/iwl-5000.c +++ b/drivers/net/wireless/iwlwifi/iwl-5000.c @@ -51,6 +51,10 @@ #define IWL5000_UCODE_API_MAX 5 #define IWL5150_UCODE_API_MAX 2 +/* Oldest version we won't warn about */ +#define IWL5000_UCODE_API_OK 5 +#define IWL5150_UCODE_API_OK 2 + /* Lowest firmware API version supported */ #define IWL5000_UCODE_API_MIN 1 #define IWL5150_UCODE_API_MIN 1 @@ -326,6 +330,7 @@ static const struct iwl_ht_params iwl5000_ht_params = { #define IWL_DEVICE_5000 \ .fw_name_pre = IWL5000_FW_PRE, \ .ucode_api_max = IWL5000_UCODE_API_MAX, \ + .ucode_api_ok = IWL5000_UCODE_API_OK, \ .ucode_api_min = IWL5000_UCODE_API_MIN, \ .max_inst_size = IWLAGN_RTC_INST_SIZE, \ .max_data_size = IWLAGN_RTC_DATA_SIZE, \ @@ -371,6 +376,7 @@ const struct iwl_cfg iwl5350_agn_cfg = { .name = "Intel(R) WiMAX/WiFi Link 5350 AGN", .fw_name_pre = IWL5000_FW_PRE, .ucode_api_max = IWL5000_UCODE_API_MAX, + .ucode_api_ok = IWL5000_UCODE_API_OK, .ucode_api_min = IWL5000_UCODE_API_MIN, .max_inst_size = IWLAGN_RTC_INST_SIZE, .max_data_size = IWLAGN_RTC_DATA_SIZE, @@ -386,6 +392,7 @@ const struct iwl_cfg iwl5350_agn_cfg = { #define IWL_DEVICE_5150 \ .fw_name_pre = IWL5150_FW_PRE, \ .ucode_api_max = IWL5150_UCODE_API_MAX, \ + .ucode_api_ok = IWL5150_UCODE_API_OK, \ .ucode_api_min = IWL5150_UCODE_API_MIN, \ .max_inst_size = IWLAGN_RTC_INST_SIZE, \ .max_data_size = IWLAGN_RTC_DATA_SIZE, \ @@ -409,5 +416,5 @@ const struct iwl_cfg iwl5150_abg_cfg = { IWL_DEVICE_5150, }; -MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL5000_MODULE_FIRMWARE(IWL5000_UCODE_API_OK)); +MODULE_FIRMWARE(IWL5150_MODULE_FIRMWARE(IWL5150_UCODE_API_OK)); diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c index 64060cd..b1b6951 100644 --- a/drivers/net/wireless/iwlwifi/iwl-6000.c +++ b/drivers/net/wireless/iwlwifi/iwl-6000.c @@ -53,6 +53,8 @@ /* Oldest version we won't warn about */ #define IWL6000_UCODE_API_OK 4 #define IWL6000G2_UCODE_API_OK 5 +#define IWL6050_UCODE_API_OK 5 +#define IWL6000G2B_UCODE_API_OK 6 /* Lowest firmware API version supported */ #define IWL6000_UCODE_API_MIN 4 @@ -334,7 +336,7 @@ static const struct iwl_bt_params iwl6000_bt_params = { #define IWL_DEVICE_6005 \ .fw_name_pre = IWL6005_FW_PRE, \ .ucode_api_max = IWL6000G2_UCODE_API_MAX, \ - .ucode_api_ok = IWL6000G2_UCODE_API_OK, \ + .ucode_api_ok = IWL6000G2B_UCODE_API_OK, \ .ucode_api_min = IWL6000G2_UCODE_API_MIN, \ .max_inst_size = IWL60_RTC_INST_SIZE, \ .max_data_size = IWL60_RTC_DATA_SIZE, \ @@ -557,6 +559,6 @@ const struct iwl_cfg iwl6000_3agn_cfg = { }; MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_OK)); -MODULE_FIRMWARE(IWL6050_MODULE_FIRMWARE(IWL6050_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL6005_MODULE_FIRMWARE(IWL6000G2_UCODE_API_MAX)); -MODULE_FIRMWARE(IWL6030_MODULE_FIRMWARE(IWL6000G2_UCODE_API_MAX)); +MODULE_FIRMWARE(IWL6050_MODULE_FIRMWARE(IWL6050_UCODE_API_OK)); +MODULE_FIRMWARE(IWL6005_MODULE_FIRMWARE(IWL6000G2_UCODE_API_OK)); +MODULE_FIRMWARE(IWL6030_MODULE_FIRMWARE(IWL6000G2B_UCODE_API_OK)); -- cgit v1.1 From afa762f6871a8cb05fbef5d0f83fac14304aa816 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Mon, 23 Apr 2012 14:45:15 +0300 Subject: mac80211: call ieee80211_mgd_stop() on interface stop ieee80211_mgd_teardown() is called on netdev removal, which occurs after the vif was already removed from the low-level driver, resulting in the following warning: [ 4809.014734] ------------[ cut here ]------------ [ 4809.019861] WARNING: at net/mac80211/driver-ops.h:12 ieee80211_bss_info_change_notify+0x200/0x2c8 [mac80211]() [ 4809.030388] wlan0: Failed check-sdata-in-driver check, flags: 0x4 [ 4809.036862] Modules linked in: wlcore_sdio(-) wl12xx wlcore mac80211 cfg80211 [last unloaded: cfg80211] [ 4809.046849] [] (unwind_backtrace+0x0/0x12c) [ 4809.055937] [] (dump_stack+0x20/0x24) [ 4809.065385] [] (warn_slowpath_common+0x5c/0x74) [ 4809.075589] [] (warn_slowpath_fmt+0x40/0x48) [ 4809.088291] [] (ieee80211_bss_info_change_notify+0x200/0x2c8 [mac80211]) [ 4809.102844] [] (ieee80211_destroy_auth_data+0x80/0xa4 [mac80211]) [ 4809.116276] [] (ieee80211_mgd_teardown+0x5c/0x74 [mac80211]) [ 4809.129331] [] (ieee80211_teardown_sdata+0xb0/0xd8 [mac80211]) [ 4809.141595] [] (rollback_registered_many+0x228/0x2f0) [ 4809.153056] [] (unregister_netdevice_many+0x28/0x50) [ 4809.165696] [] (ieee80211_remove_interfaces+0xb4/0xdc [mac80211]) [ 4809.179151] [] (ieee80211_unregister_hw+0x50/0xf0 [mac80211]) [ 4809.191043] [] (wlcore_remove+0x5c/0x7c [wlcore]) [ 4809.201491] [] (platform_drv_remove+0x24/0x28) [ 4809.212029] [] (__device_release_driver+0x8c/0xcc) [ 4809.222738] [] (device_release_driver+0x30/0x3c) [ 4809.233099] [] (bus_remove_device+0x10c/0x128) [ 4809.242620] [] (device_del+0x11c/0x17c) [ 4809.252150] [] (platform_device_del+0x28/0x68) [ 4809.263051] [] (wl1271_remove+0x3c/0x50 [wlcore_sdio]) [ 4809.273590] [] (sdio_bus_remove+0x48/0xf8) [ 4809.283754] [] (__device_release_driver+0x8c/0xcc) [ 4809.293729] [] (driver_detach+0x9c/0xc4) [ 4809.303163] [] (bus_remove_driver+0xc4/0xf4) [ 4809.312973] [] (driver_unregister+0x70/0x7c) [ 4809.323220] [] (sdio_unregister_driver+0x24/0x2c) [ 4809.334213] [] (wl1271_exit+0x14/0x1c [wlcore_sdio]) [ 4809.344930] [] (sys_delete_module+0x228/0x2a8) [ 4809.354734] ---[ end trace 515290ccf5feb522 ]--- Rename ieee80211_mgd_teardown() to ieee80211_mgd_stop(), and call it on ieee80211_do_stop(). Signed-off-by: Eliad Peller Signed-off-by: John W. Linville --- net/mac80211/ieee80211_i.h | 2 +- net/mac80211/iface.c | 4 ++-- net/mac80211/mlme.c | 2 +- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index d9798a3..db8fae5 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1210,7 +1210,7 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, struct sk_buff *skb); void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata); void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata); -void ieee80211_mgd_teardown(struct ieee80211_sub_if_data *sdata); +void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata); /* IBSS code */ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 401c01f..c20051b 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -486,6 +486,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, /* free all potentially still buffered bcast frames */ local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps_bc_buf); skb_queue_purge(&sdata->u.ap.ps_bc_buf); + } else if (sdata->vif.type == NL80211_IFTYPE_STATION) { + ieee80211_mgd_stop(sdata); } if (going_down) @@ -644,8 +646,6 @@ static void ieee80211_teardown_sdata(struct net_device *dev) if (ieee80211_vif_is_mesh(&sdata->vif)) mesh_rmc_free(sdata); - else if (sdata->vif.type == NL80211_IFTYPE_STATION) - ieee80211_mgd_teardown(sdata); flushed = sta_info_flush(local, sdata); WARN_ON(flushed); diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index f76da5b..20c680b 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3497,7 +3497,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, return 0; } -void ieee80211_mgd_teardown(struct ieee80211_sub_if_data *sdata) +void ieee80211_mgd_stop(struct ieee80211_sub_if_data *sdata) { struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; -- cgit v1.1 From a2cd62ec9a3a2805014bdc14e0644b5faa352d3c Mon Sep 17 00:00:00 2001 From: Omar Ramirez Luna Date: Fri, 20 Apr 2012 20:22:41 -0500 Subject: staging: tidspbridge: remove usage of OMAP2_L4_IO_ADDRESS MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Instead now use ioremap. This is needed for 3.4 since this change emerged in mainline during one of the previous rc cycles. These solves the following compilation breaks: drivers/staging/tidspbridge/core/tiomap3430.c: In function ‘bridge_brd_start’: drivers/staging/tidspbridge/core/tiomap3430.c:425:4: error: implicit declaration of function ‘OMAP2_L4_IO_ADDRESS’ drivers/staging/tidspbridge/core/wdt.c: In function ‘dsp_wdt_init’: drivers/staging/tidspbridge/core/wdt.c:56:2: error: implicit declaration of function ‘OMAP2_L4_IO_ADDRESS’ For control registers a new function needs to be defined so we can get rid of a layer violation, but that approach must be queued for the next merge window. As seen in: http://www.arm.linux.org.uk/developer/build/ platform: omap4430-sdp build: uImage config: randconfig version: 3.4.0-rc3 start time: Apr 20 2012 01:07 Reported-by: Tony Lindgren Signed-off-by: Omar Ramirez Luna Signed-off-by: Greg Kroah-Hartman --- drivers/staging/tidspbridge/core/tiomap3430.c | 20 ++++++++++++-------- drivers/staging/tidspbridge/core/wdt.c | 8 +++++++- 2 files changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/staging/tidspbridge/core/tiomap3430.c b/drivers/staging/tidspbridge/core/tiomap3430.c index 7862513..9cf29fc 100644 --- a/drivers/staging/tidspbridge/core/tiomap3430.c +++ b/drivers/staging/tidspbridge/core/tiomap3430.c @@ -79,10 +79,6 @@ #define OMAP343X_CONTROL_IVA2_BOOTADDR (OMAP2_CONTROL_GENERAL + 0x0190) #define OMAP343X_CONTROL_IVA2_BOOTMOD (OMAP2_CONTROL_GENERAL + 0x0194) -#define OMAP343X_CTRL_REGADDR(reg) \ - OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE + (reg)) - - /* Forward Declarations: */ static int bridge_brd_monitor(struct bridge_dev_context *dev_ctxt); static int bridge_brd_read(struct bridge_dev_context *dev_ctxt, @@ -418,19 +414,27 @@ static int bridge_brd_start(struct bridge_dev_context *dev_ctxt, /* Assert RST1 i.e only the RST only for DSP megacell */ if (!status) { + /* + * XXX: ioremapping MUST be removed once ctrl + * function is made available. + */ + void __iomem *ctrl = ioremap(OMAP343X_CTRL_BASE, SZ_4K); + if (!ctrl) + return -ENOMEM; + (*pdata->dsp_prm_rmw_bits)(OMAP3430_RST1_IVA2_MASK, OMAP3430_RST1_IVA2_MASK, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL); /* Mask address with 1K for compatibility */ __raw_writel(dsp_addr & OMAP3_IVA2_BOOTADDR_MASK, - OMAP343X_CTRL_REGADDR( - OMAP343X_CONTROL_IVA2_BOOTADDR)); + ctrl + OMAP343X_CONTROL_IVA2_BOOTADDR); /* * Set bootmode to self loop if dsp_debug flag is true */ __raw_writel((dsp_debug) ? OMAP3_IVA2_BOOTMOD_IDLE : 0, - OMAP343X_CTRL_REGADDR( - OMAP343X_CONTROL_IVA2_BOOTMOD)); + ctrl + OMAP343X_CONTROL_IVA2_BOOTMOD); + + iounmap(ctrl); } } if (!status) { diff --git a/drivers/staging/tidspbridge/core/wdt.c b/drivers/staging/tidspbridge/core/wdt.c index 70055c8..870f934 100644 --- a/drivers/staging/tidspbridge/core/wdt.c +++ b/drivers/staging/tidspbridge/core/wdt.c @@ -53,7 +53,10 @@ int dsp_wdt_init(void) int ret = 0; dsp_wdt.sm_wdt = NULL; - dsp_wdt.reg_base = OMAP2_L4_IO_ADDRESS(OMAP34XX_WDT3_BASE); + dsp_wdt.reg_base = ioremap(OMAP34XX_WDT3_BASE, SZ_4K); + if (!dsp_wdt.reg_base) + return -ENOMEM; + tasklet_init(&dsp_wdt.wdt3_tasklet, dsp_wdt_dpc, 0); dsp_wdt.fclk = clk_get(NULL, "wdt3_fck"); @@ -99,6 +102,9 @@ void dsp_wdt_exit(void) dsp_wdt.fclk = NULL; dsp_wdt.iclk = NULL; dsp_wdt.sm_wdt = NULL; + + if (dsp_wdt.reg_base) + iounmap(dsp_wdt.reg_base); dsp_wdt.reg_base = NULL; } -- cgit v1.1 From 349ae79c0a3db1632ac4db955c53db05fc017bde Mon Sep 17 00:00:00 2001 From: Seth Jennings Date: Mon, 23 Apr 2012 20:33:50 -0500 Subject: staging: zcache: fix Kconfig crypto dependency ZCACHE is a boolean in the Kconfig. When selected, it should require that CRYPTO be builtin (=y). Currently, ZCACHE=y and CRYPTO=m is a valid configuration when it should not be. This patch changes the zcache Kconfig to enforce this dependency. Signed-off-by: Seth Jennings Acked-by: Konrad Rzeszutek Wilk Signed-off-by: Greg Kroah-Hartman --- drivers/staging/zcache/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig index 3ed2c8f..7048e01 100644 --- a/drivers/staging/zcache/Kconfig +++ b/drivers/staging/zcache/Kconfig @@ -2,7 +2,7 @@ config ZCACHE bool "Dynamic compression of swap pages and clean pagecache pages" # X86 dependency is because zsmalloc uses non-portable pte/tlb # functions - depends on (CLEANCACHE || FRONTSWAP) && CRYPTO && X86 + depends on (CLEANCACHE || FRONTSWAP) && CRYPTO=y && X86 select ZSMALLOC select CRYPTO_LZO default n -- cgit v1.1 From dc890df0a77cafe5f4a3d81c0dade637c27f1934 Mon Sep 17 00:00:00 2001 From: Imre Kaloz Date: Thu, 19 Apr 2012 12:27:27 +0200 Subject: staging: octeon-ethernet: fix build errors by including interrupt.h This patch fixes the following build failures: drivers/staging/octeon/ethernet.c: In function 'cvm_oct_cleanup_module': drivers/staging/octeon/ethernet.c:799:2: error: implicit declaration of function 'free_irq' drivers/staging/octeon/ethernet-rx.c: In function 'cvm_oct_no_more_work': drivers/staging/octeon/ethernet-rx.c:119:3: error: implicit declaration of function 'enable_irq' drivers/staging/octeon/ethernet-rx.c: In function 'cvm_oct_do_interrupt': drivers/staging/octeon/ethernet-rx.c:136:2: error: implicit declaration of function 'disable_irq_nosync' drivers/staging/octeon/ethernet-rx.c: In function 'cvm_oct_rx_initialize': drivers/staging/octeon/ethernet-rx.c:532:2: error: implicit declaration of function 'request_irq' drivers/staging/octeon/ethernet-tx.c: In function 'cvm_oct_tx_initialize': drivers/staging/octeon/ethernet-tx.c:712:2: error: implicit declaration of function 'request_irq' drivers/staging/octeon/ethernet-tx.c: In function 'cvm_oct_tx_shutdown': drivers/staging/octeon/ethernet-tx.c:723:2: error: implicit declaration of function 'free_irq' Signed-off-by: Imre Kaloz Acked-by: David Daney Signed-off-by: Greg Kroah-Hartman --- drivers/staging/octeon/ethernet-rx.c | 1 + drivers/staging/octeon/ethernet-tx.c | 1 + drivers/staging/octeon/ethernet.c | 1 + 3 files changed, 3 insertions(+) diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c index 400df8c..d91751f 100644 --- a/drivers/staging/octeon/ethernet-rx.c +++ b/drivers/staging/octeon/ethernet-rx.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #ifdef CONFIG_XFRM #include diff --git a/drivers/staging/octeon/ethernet-tx.c b/drivers/staging/octeon/ethernet-tx.c index 56d74dc..91a97b3 100644 --- a/drivers/staging/octeon/ethernet-tx.c +++ b/drivers/staging/octeon/ethernet-tx.c @@ -32,6 +32,7 @@ #include #include #include +#include #include #ifdef CONFIG_XFRM #include diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c index 9112cd8..60cba81 100644 --- a/drivers/staging/octeon/ethernet.c +++ b/drivers/staging/octeon/ethernet.c @@ -31,6 +31,7 @@ #include #include #include +#include #include -- cgit v1.1 From 18ea1fcd7ef19e496c523d814d52261cc4777f51 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Sat, 21 Apr 2012 06:57:29 -0700 Subject: ARM: mini2440_defconfig: Fix build error This is needed to fix mini2440_defconfig after the platform files have been moved around. arm-none-linux-gnueabi-ld: no machine record defined arm-none-linux-gnueabi-ld: no machine record defined arm-none-linux-gnueabi-ld: no machine record defined make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Arnd Bergmann Signed-off-by: Kukjin Kim --- arch/arm/configs/mini2440_defconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/configs/mini2440_defconfig b/arch/arm/configs/mini2440_defconfig index 42da918..082175c 100644 --- a/arch/arm/configs/mini2440_defconfig +++ b/arch/arm/configs/mini2440_defconfig @@ -14,6 +14,8 @@ CONFIG_MODULE_FORCE_UNLOAD=y # CONFIG_BLK_DEV_BSG is not set CONFIG_BLK_DEV_INTEGRITY=y CONFIG_ARCH_S3C24XX=y +# CONFIG_CPU_S3C2410 is not set +CONFIG_CPU_S3C2440=y CONFIG_S3C_ADC=y CONFIG_S3C24XX_PWM=y CONFIG_MACH_MINI2440=y -- cgit v1.1 From 7518dde92c27f845a685cdc559c83c666cc01840 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Sat, 21 Apr 2012 07:55:33 -0700 Subject: ARM: S3C24XX: Fix build warning for S3C2410_PM warning: (CPU_S3C2440 && CPU_S3C2442) selects S3C2410_PM which has unmet direct dependencies (ARCH_S3C24XX && CPU_S3C2410) warning: (CPU_S3C2440 && CPU_S3C2442) selects S3C2410_PM which has unmet direct dependencies (ARCH_S3C24XX && CPU_S3C2410) Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c24xx/Kconfig | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-s3c24xx/Kconfig b/arch/arm/mach-s3c24xx/Kconfig index 0f3a327..b34287a 100644 --- a/arch/arm/mach-s3c24xx/Kconfig +++ b/arch/arm/mach-s3c24xx/Kconfig @@ -111,10 +111,6 @@ config S3C24XX_SETUP_TS help Compile in platform device definition for Samsung TouchScreen. -# cpu-specific sections - -if CPU_S3C2410 - config S3C2410_DMA bool depends on S3C24XX_DMA && (CPU_S3C2410 || CPU_S3C2442) @@ -127,6 +123,10 @@ config S3C2410_PM help Power Management code common to S3C2410 and better +# cpu-specific sections + +if CPU_S3C2410 + config S3C24XX_SIMTEC_NOR bool help -- cgit v1.1 From ffabec4ef7ad6ca9365d39f643b8a24c0fce04e7 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Sat, 21 Apr 2012 08:31:38 -0700 Subject: ARM: EXYNOS: Fix resource on dev-dwmci.c Should be EXYNOS4_IRQ_DWMCI instead of IRQ_DWMCI, and use DEFINE_RES_{MEM,IRQ}. Reported-by: Jaehoon Chung Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/dev-dwmci.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/arch/arm/mach-exynos/dev-dwmci.c b/arch/arm/mach-exynos/dev-dwmci.c index b025db4..7903501 100644 --- a/arch/arm/mach-exynos/dev-dwmci.c +++ b/arch/arm/mach-exynos/dev-dwmci.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -33,16 +34,8 @@ static int exynos4_dwmci_init(u32 slot_id, irq_handler_t handler, void *data) } static struct resource exynos4_dwmci_resource[] = { - [0] = { - .start = EXYNOS4_PA_DWMCI, - .end = EXYNOS4_PA_DWMCI + SZ_4K - 1, - .flags = IORESOURCE_MEM, - }, - [1] = { - .start = IRQ_DWMCI, - .end = IRQ_DWMCI, - .flags = IORESOURCE_IRQ, - } + [0] = DEFINE_RES_MEM(EXYNOS4_PA_DWMCI, SZ_4K), + [1] = DEFINE_RES_IRQ(EXYNOS4_IRQ_DWMCI), }; static struct dw_mci_board exynos4_dwci_pdata = { -- cgit v1.1 From 6fff5a11fd07d7f918ac3737da4846558518c31d Mon Sep 17 00:00:00 2001 From: Tushar Behera Date: Tue, 24 Apr 2012 13:25:01 -0700 Subject: ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined Fixed following compile time error. arch/arm/mach-exynos/common.c: In function 'exynos5_init_irq': arch/arm/mach-exynos/common.c:539:2: error: implicit declaration of function 'of_irq_init' arch/arm/mach-exynos/common.c:539:14: error: 'exynos4_dt_irq_match' undeclared (first use in this function) arch/arm/mach-exynos/common.c:539:14: note: each undeclared identifier is reported only once for each function it appears in Cc: Thomas Abraham Signed-off-by: Tushar Behera Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/common.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c index 6c0e4f5..5ccd6e8 100644 --- a/arch/arm/mach-exynos/common.c +++ b/arch/arm/mach-exynos/common.c @@ -547,7 +547,9 @@ void __init exynos5_init_irq(void) { int irq; +#ifdef CONFIG_OF of_irq_init(exynos4_dt_irq_match); +#endif for (irq = 0; irq < EXYNOS5_MAX_COMBINER_NR; irq++) { combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq), -- cgit v1.1 From 6f6543f53f9ce136e01d7114bf6f0818ca54fb41 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Tue, 24 Apr 2012 11:29:42 +0200 Subject: usb gadget: uvc: uvc_request_data::length field must be signed The field is used to pass the UVC request data length, but can also be used to signal an error when setting it to a negative value. Switch from unsigned int to __s32. Reported-by: Fernandez Gonzalo Signed-off-by: Laurent Pinchart Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/uvc.h | 2 +- drivers/usb/gadget/uvc_v4l2.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/uvc.h b/drivers/usb/gadget/uvc.h index bc78c60..ca4e03a 100644 --- a/drivers/usb/gadget/uvc.h +++ b/drivers/usb/gadget/uvc.h @@ -28,7 +28,7 @@ struct uvc_request_data { - unsigned int length; + __s32 length; __u8 data[60]; }; diff --git a/drivers/usb/gadget/uvc_v4l2.c b/drivers/usb/gadget/uvc_v4l2.c index f6e083b..54d7ca5 100644 --- a/drivers/usb/gadget/uvc_v4l2.c +++ b/drivers/usb/gadget/uvc_v4l2.c @@ -39,7 +39,7 @@ uvc_send_response(struct uvc_device *uvc, struct uvc_request_data *data) if (data->length < 0) return usb_ep_set_halt(cdev->gadget->ep0); - req->length = min(uvc->event_length, data->length); + req->length = min_t(unsigned int, uvc->event_length, data->length); req->zero = data->length < uvc->event_length; req->dma = DMA_ADDR_INVALID; -- cgit v1.1 From 151b61284776be2d6f02d48c23c3625678960b97 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 24 Apr 2012 14:07:22 -0400 Subject: USB: EHCI: fix crash during suspend on ASUS computers This patch (as1545) fixes a problem affecting several ASUS computers: The machine crashes or corrupts memory when going into suspend if the ehci-hcd driver is bound to any controllers. Users have been forced to unbind or unload ehci-hcd before putting their systems to sleep. After extensive testing, it was determined that the machines don't like going into suspend when any EHCI controllers are in the PCI D3 power state. Presumably this is a firmware bug, but there's nothing we can do about it except to avoid putting the controllers in D3 during system sleep. The patch adds a new flag to indicate whether the problem is present, and avoids changing the controller's power state if the flag is set. Runtime suspend is unaffected; this matters only for system suspend. However as a side effect, the controller will not respond to remote wakeup requests while the system is asleep. Hence USB wakeup is not functional -- but of course, this is already true in the current state of affairs. This fixes Bugzilla #42728. Signed-off-by: Alan Stern Tested-by: Steven Rostedt Tested-by: Andrey Rahmatullin Tested-by: Oleksij Rempel (fishor) Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/hcd-pci.c | 9 +++++++++ drivers/usb/host/ehci-pci.c | 8 ++++++++ include/linux/usb/hcd.h | 2 ++ 3 files changed, 19 insertions(+) diff --git a/drivers/usb/core/hcd-pci.c b/drivers/usb/core/hcd-pci.c index 622b4a4..57ed9e4 100644 --- a/drivers/usb/core/hcd-pci.c +++ b/drivers/usb/core/hcd-pci.c @@ -493,6 +493,15 @@ static int hcd_pci_suspend_noirq(struct device *dev) pci_save_state(pci_dev); + /* + * Some systems crash if an EHCI controller is in D3 during + * a sleep transition. We have to leave such controllers in D0. + */ + if (hcd->broken_pci_sleep) { + dev_dbg(dev, "Staying in PCI D0\n"); + return retval; + } + /* If the root hub is dead rather than suspended, disallow remote * wakeup. usb_hc_died() should ensure that both hosts are marked as * dying, so we only need to check the primary roothub. diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 01bb7241d..fe8dc06 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -144,6 +144,14 @@ static int ehci_pci_setup(struct usb_hcd *hcd) hcd->has_tt = 1; tdi_reset(ehci); } + if (pdev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK) { + /* EHCI #1 or #2 on 6 Series/C200 Series chipset */ + if (pdev->device == 0x1c26 || pdev->device == 0x1c2d) { + ehci_info(ehci, "broken D3 during system sleep on ASUS\n"); + hcd->broken_pci_sleep = 1; + device_set_wakeup_capable(&pdev->dev, false); + } + } break; case PCI_VENDOR_ID_TDI: if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index 5de4157..d28cc78 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -126,6 +126,8 @@ struct usb_hcd { unsigned wireless:1; /* Wireless USB HCD */ unsigned authorized_default:1; unsigned has_tt:1; /* Integrated TT in root hub */ + unsigned broken_pci_sleep:1; /* Don't put the + controller in PCI-D3 for system sleep */ unsigned int irq; /* irq allocated */ void __iomem *regs; /* device memory/io */ -- cgit v1.1 From f8262d476823a7ea1eb497ff9676d1eab2393c75 Mon Sep 17 00:00:00 2001 From: Bojan Smojver Date: Tue, 24 Apr 2012 23:53:28 +0200 Subject: PM / Hibernate: fix the number of pages used for hibernate/thaw buffering Hibernation regression fix, since 3.2. Calculate the number of required free pages based on non-high memory pages only, because that is where the buffers will come from. Commit 081a9d043c983f161b78fdc4671324d1342b86bc introduced a new buffer page allocation logic during hibernation, in order to improve the performance. The amount of pages allocated was calculated based on total amount of pages available, although only non-high memory pages are usable for this purpose. This caused hibernation code to attempt to over allocate pages on platforms that have high memory, which led to hangs. Signed-off-by: Bojan Smojver Signed-off-by: Rafael J. Wysocki --- kernel/power/swap.c | 28 ++++++++++++++++++++++------ 1 file changed, 22 insertions(+), 6 deletions(-) diff --git a/kernel/power/swap.c b/kernel/power/swap.c index 8742fd0..eef311a 100644 --- a/kernel/power/swap.c +++ b/kernel/power/swap.c @@ -51,6 +51,23 @@ #define MAP_PAGE_ENTRIES (PAGE_SIZE / sizeof(sector_t) - 1) +/* + * Number of free pages that are not high. + */ +static inline unsigned long low_free_pages(void) +{ + return nr_free_pages() - nr_free_highpages(); +} + +/* + * Number of pages required to be kept free while writing the image. Always + * half of all available low pages before the writing starts. + */ +static inline unsigned long reqd_free_pages(void) +{ + return low_free_pages() / 2; +} + struct swap_map_page { sector_t entries[MAP_PAGE_ENTRIES]; sector_t next_swap; @@ -72,7 +89,7 @@ struct swap_map_handle { sector_t cur_swap; sector_t first_sector; unsigned int k; - unsigned long nr_free_pages, written; + unsigned long reqd_free_pages; u32 crc32; }; @@ -316,8 +333,7 @@ static int get_swap_writer(struct swap_map_handle *handle) goto err_rel; } handle->k = 0; - handle->nr_free_pages = nr_free_pages() >> 1; - handle->written = 0; + handle->reqd_free_pages = reqd_free_pages(); handle->first_sector = handle->cur_swap; return 0; err_rel: @@ -352,11 +368,11 @@ static int swap_write_page(struct swap_map_handle *handle, void *buf, handle->cur_swap = offset; handle->k = 0; } - if (bio_chain && ++handle->written > handle->nr_free_pages) { + if (bio_chain && low_free_pages() <= handle->reqd_free_pages) { error = hib_wait_on_bio_chain(bio_chain); if (error) goto out; - handle->written = 0; + handle->reqd_free_pages = reqd_free_pages(); } out: return error; @@ -618,7 +634,7 @@ static int save_image_lzo(struct swap_map_handle *handle, * Adjust number of free pages after all allocations have been done. * We don't want to run out of pages when writing. */ - handle->nr_free_pages = nr_free_pages() >> 1; + handle->reqd_free_pages = reqd_free_pages(); /* * Start the CRC32 thread. -- cgit v1.1 From 840777de530ae96ee9a3022f7ec1d6c65abb26ac Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Tue, 24 Apr 2012 16:06:50 -0700 Subject: IB/mad: Set 'D' bit in response for unhandled MADs Commit 0b307043049f ("IB/mad: Return error response for unsupported MADs") does not handle directed-route MADs properly -- it fails to set the 'D' bit in the response MAD status field. This is a problem for SmInfo MADs when the receiver does not have an SM running. Reviewed-by: Hal Rosenstock Signed-off-by: Jack Morgenstein Signed-off-by: Roland Dreier --- drivers/infiniband/core/mad.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 426bb76..1c73d8a 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1854,6 +1854,8 @@ static bool generate_unmatched_resp(struct ib_mad_private *recv, response->mad.mad.mad_hdr.method = IB_MGMT_METHOD_GET_RESP; response->mad.mad.mad_hdr.status = cpu_to_be16(IB_MGMT_MAD_STATUS_UNSUPPORTED_METHOD_ATTRIB); + if (recv->mad.mad.mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE) + response->mad.mad.mad_hdr.status |= IB_SMP_DIRECTION; return true; } else { -- cgit v1.1 From a9e7432319eb26ad90f18a7d215e50341d28ecb2 Mon Sep 17 00:00:00 2001 From: Jack Morgenstein Date: Tue, 24 Apr 2012 16:08:57 -0700 Subject: IB/mad: Don't send response for failed MADs Commit 0b307043049f ("IB/mad: Return error response for unsupported MADs") does not failed MADs (eg those that return IB_MAD_RESULT_FAILURE) properly -- these MADs should be silently discarded. (We should not force the lower-layer drivers to return SUCCESS | CONSUMED in this case, since the MAD is NOT successful). Unsupported MADs are not failures -- they return SUCCESS, but with an "unsupported error" status value inside the response MAD. Reviewed-by: Hal Rosenstock Signed-off-by: Jack Morgenstein Signed-off-by: Roland Dreier --- drivers/infiniband/core/mad.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c index 1c73d8a..b0d0bc8 100644 --- a/drivers/infiniband/core/mad.c +++ b/drivers/infiniband/core/mad.c @@ -1871,6 +1871,7 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv, struct ib_mad_list_head *mad_list; struct ib_mad_agent_private *mad_agent; int port_num; + int ret = IB_MAD_RESULT_SUCCESS; mad_list = (struct ib_mad_list_head *)(unsigned long)wc->wr_id; qp_info = mad_list->mad_queue->qp_info; @@ -1954,8 +1955,6 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv, local: /* Give driver "right of first refusal" on incoming MAD */ if (port_priv->device->process_mad) { - int ret; - ret = port_priv->device->process_mad(port_priv->device, 0, port_priv->port_num, wc, &recv->grh, @@ -1983,7 +1982,8 @@ local: * or via recv_handler in ib_mad_complete_recv() */ recv = NULL; - } else if (generate_unmatched_resp(recv, response)) { + } else if ((ret & IB_MAD_RESULT_SUCCESS) && + generate_unmatched_resp(recv, response)) { agent_send_response(&response->mad.mad, &recv->grh, wc, port_priv->device, port_num, qp_info->qp->qp_num); } -- cgit v1.1 From bf6b47deb40f9fc8ddb4573373dc9614aab59d35 Mon Sep 17 00:00:00 2001 From: Jesper Juhl Date: Wed, 11 Apr 2012 23:43:29 +0200 Subject: IB/mlx4: Fix memory leaks in ib_link_query_port() If the call to mlx4_MAD_IFC() fails in ib_link_query_port() we will currently do 'return err;' which will leak 'in_mad' and 'out_mad'. We should instead do 'goto out;' where we'll properly free the memory we previously allocated. Signed-off-by: Jesper Juhl Acked-by: Or Gerlitz Signed-off-by: Roland Dreier --- drivers/infiniband/hw/mlx4/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index 75d3056..cc88c9c 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -247,7 +247,7 @@ static int ib_link_query_port(struct ib_device *ibdev, u8 port, err = mlx4_MAD_IFC(to_mdev(ibdev), 1, 1, port, NULL, NULL, in_mad, out_mad); if (err) - return err; + goto out; /* Checking LinkSpeedActive for FDR-10 */ if (out_mad->data[15] & 0x1) -- cgit v1.1 From 9b4d1cbb1391ae603c20cbf8c0beb66e38397196 Mon Sep 17 00:00:00 2001 From: Marek Szyprowski Date: Tue, 24 Apr 2012 17:28:12 -0700 Subject: ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability Commit 6e8201f57c935 "mmc: core: add the capability for broken voltage" introduced a new quirk to indicate that MMC core should ignore voltage change errors reported by the regulators core. This is required to get SDHCI working on UniversalC210, NURI and GONI boards again after commit ceb6143b2df81c ("mmc: sdhci: fix vmmc handling"). Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/mach-nuri.c | 1 + arch/arm/mach-exynos/mach-universal_c210.c | 1 + arch/arm/mach-s5pv210/mach-goni.c | 2 ++ 3 files changed, 4 insertions(+) diff --git a/arch/arm/mach-exynos/mach-nuri.c b/arch/arm/mach-exynos/mach-nuri.c index b4f1f90..ed90aef 100644 --- a/arch/arm/mach-exynos/mach-nuri.c +++ b/arch/arm/mach-exynos/mach-nuri.c @@ -112,6 +112,7 @@ static struct s3c_sdhci_platdata nuri_hsmmc0_data __initdata = { .host_caps = (MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED | MMC_CAP_ERASE), + .host_caps2 = MMC_CAP2_BROKEN_VOLTAGE, .cd_type = S3C_SDHCI_CD_PERMANENT, .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL, }; diff --git a/arch/arm/mach-exynos/mach-universal_c210.c b/arch/arm/mach-exynos/mach-universal_c210.c index 7ebf79c..cb2b027 100644 --- a/arch/arm/mach-exynos/mach-universal_c210.c +++ b/arch/arm/mach-exynos/mach-universal_c210.c @@ -747,6 +747,7 @@ static struct s3c_sdhci_platdata universal_hsmmc0_data __initdata = { .max_width = 8, .host_caps = (MMC_CAP_8_BIT_DATA | MMC_CAP_4_BIT_DATA | MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED), + .host_caps2 = MMC_CAP2_BROKEN_VOLTAGE, .cd_type = S3C_SDHCI_CD_PERMANENT, .clk_type = S3C_SDHCI_CLK_DIV_EXTERNAL, }; diff --git a/arch/arm/mach-s5pv210/mach-goni.c b/arch/arm/mach-s5pv210/mach-goni.c index a8933de..3239566 100644 --- a/arch/arm/mach-s5pv210/mach-goni.c +++ b/arch/arm/mach-s5pv210/mach-goni.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -765,6 +766,7 @@ static void __init goni_pmic_init(void) /* MoviNAND */ static struct s3c_sdhci_platdata goni_hsmmc0_data __initdata = { .max_width = 4, + .host_caps2 = MMC_CAP2_BROKEN_VOLTAGE, .cd_type = S3C_SDHCI_CD_PERMANENT, }; -- cgit v1.1 From 569a3aff70e880588fe4b3f1622ac60abbeb4a28 Mon Sep 17 00:00:00 2001 From: Prasanna S Panchamukhi Date: Thu, 19 Apr 2012 17:01:00 +0000 Subject: e1000e: MSI interrupt test failed, using legacy interrupt Following logs where seen on Systems with multiple NICs, while using MSI interrupts as shown below: Feb 16 15:09:32 (none) user.notice kernel: 0000:00:0d.0: lan0_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:32 (none) user.notice kernel: 0000:40:0d.0: wan0_1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:32 (none) user.notice kernel: 0000:40:0d.0: lan0_1: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:32 (none) user.warn kernel: 0000:40:0e.0: wan4_0: MSI interrupt test failed, using legacy interrupt. Feb 16 15:09:32 (none) user.notice kernel: 0000:00:0e.0: wan1_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:33 (none) user.notice kernel: 0000:00:0e.0: lan1_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:33 (none) user.notice kernel: 0000:00:0f.0: wan2_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:33 (none) user.notice kernel: 0000:00:0f.0: lan2_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:33 (none) user.notice kernel: 0000:40:0a.0: wan3_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:33 (none) user.notice kernel: 0000:40:0a.0: lan3_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:34 (none) user.notice kernel: 0000:40:0e.0: lan4_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:34 (none) user.notice kernel: 0000:40:0f.0: wan5_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX Feb 16 15:09:34 (none) user.notice kernel: 0000:40:0f.0: lan5_0: NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX This patch fixes this problem by increasing the msleep from 50 to 100. Signed-off-by: Prasanna S Panchamukhi Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/netdev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 19ab215..9520a6a 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -3799,7 +3799,7 @@ static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) /* fire an unusual interrupt on the test handler */ ew32(ICS, E1000_ICS_RXSEQ); e1e_flush(); - msleep(50); + msleep(100); e1000_irq_disable(adapter); -- cgit v1.1 From 727c356f4d799b53f94cf8fe43e19d64482348c7 Mon Sep 17 00:00:00 2001 From: Jeff Kirsher Date: Fri, 20 Apr 2012 08:51:45 +0000 Subject: e1000e: Fix default interrupt throttle rate not set in NIC HW Based on the original patch from Ying Cai This change ensures that the itr/itr_setting adjustment logic is used, even for the default/compiled-in value. Context: When we changed the default InterruptThrottleRate value from default (3 = dynamic mode) to 8000 for example, only adapter->itr_setting (which controls interrupt coalescing mode) was set to 8000, but adapter->itr (which controls the value set in NIC register) was not updated accordingly. So from ethtool, it seemed the interrupt throttling is enabled at 8000 intr/s, but the NIC actually was running in dynamic mode which has lower CPU efficiency especially when throughput is not high. CC: Ying Cai CC: David Decotigny Signed-off-by: Jeff Kirsher Tested-by: Aaron Brown --- drivers/net/ethernet/intel/e1000e/param.c | 99 +++++++++++++++++-------------- 1 file changed, 53 insertions(+), 46 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/param.c b/drivers/net/ethernet/intel/e1000e/param.c index ff796e4..16adeb9 100644 --- a/drivers/net/ethernet/intel/e1000e/param.c +++ b/drivers/net/ethernet/intel/e1000e/param.c @@ -106,7 +106,7 @@ E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay"); /* * Interrupt Throttle Rate (interrupts/sec) * - * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative) + * Valid Range: 100-100000 or one of: 0=off, 1=dynamic, 3=dynamic conservative */ E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate"); #define DEFAULT_ITR 3 @@ -344,53 +344,60 @@ void __devinit e1000e_check_options(struct e1000_adapter *adapter) if (num_InterruptThrottleRate > bd) { adapter->itr = InterruptThrottleRate[bd]; - switch (adapter->itr) { - case 0: - e_info("%s turned off\n", opt.name); - break; - case 1: - e_info("%s set to dynamic mode\n", opt.name); - adapter->itr_setting = adapter->itr; - adapter->itr = 20000; - break; - case 3: - e_info("%s set to dynamic conservative mode\n", - opt.name); - adapter->itr_setting = adapter->itr; - adapter->itr = 20000; - break; - case 4: - e_info("%s set to simplified (2000-8000 ints) " - "mode\n", opt.name); - adapter->itr_setting = 4; - break; - default: - /* - * Save the setting, because the dynamic bits - * change itr. - */ - if (e1000_validate_option(&adapter->itr, &opt, - adapter) && - (adapter->itr == 3)) { - /* - * In case of invalid user value, - * default to conservative mode. - */ - adapter->itr_setting = adapter->itr; - adapter->itr = 20000; - } else { - /* - * Clear the lower two bits because - * they are used as control. - */ - adapter->itr_setting = - adapter->itr & ~3; - } - break; - } + + /* + * Make sure a message is printed for non-special + * values. And in case of an invalid option, display + * warning, use default and got through itr/itr_setting + * adjustment logic below + */ + if ((adapter->itr > 4) && + e1000_validate_option(&adapter->itr, &opt, adapter)) + adapter->itr = opt.def; } else { - adapter->itr_setting = opt.def; + /* + * If no option specified, use default value and go + * through the logic below to adjust itr/itr_setting + */ + adapter->itr = opt.def; + + /* + * Make sure a message is printed for non-special + * default values + */ + if (adapter->itr > 40) + e_info("%s set to default %d\n", opt.name, + adapter->itr); + } + + adapter->itr_setting = adapter->itr; + switch (adapter->itr) { + case 0: + e_info("%s turned off\n", opt.name); + break; + case 1: + e_info("%s set to dynamic mode\n", opt.name); + adapter->itr = 20000; + break; + case 3: + e_info("%s set to dynamic conservative mode\n", + opt.name); adapter->itr = 20000; + break; + case 4: + e_info("%s set to simplified (2000-8000 ints) mode\n", + opt.name); + break; + default: + /* + * Save the setting, because the dynamic bits + * change itr. + * + * Clear the lower two bits because + * they are used as control. + */ + adapter->itr_setting &= ~3; + break; } } { /* Interrupt Mode */ -- cgit v1.1 From 93f90e5186053611fe93d889e99ee2852f4da250 Mon Sep 17 00:00:00 2001 From: Vasu Dev Date: Fri, 6 Apr 2012 15:52:51 -0700 Subject: [SCSI] libfc: update mfs boundry checking A previous commit changed the mfs checking to ensure the new mfs is less or equal to the mfs supported by the FCF. This doesn't work for BRDCM cards as they set an mfs of 2048 regardless of whether the switch returns a larger mfs. This patch validates the new mfs against the upper and lower spec defined boundries for a FCoE mfs. Signed-off-by: Vasu Dev Signed-off-by: Bhanu Prakash Gollapudi Signed-off-by: Robert Love Signed-off-by: James Bottomley --- drivers/scsi/libfc/fc_lport.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index ef9560d..cc83b66 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -1742,17 +1742,19 @@ void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp, mfs = ntohs(flp->fl_csp.sp_bb_data) & FC_SP_BB_DATA_MASK; - if (mfs >= FC_SP_MIN_MAX_PAYLOAD && - mfs <= lport->mfs) { - lport->mfs = mfs; - fc_host_maxframe_size(lport->host) = mfs; - } else { + + if (mfs < FC_SP_MIN_MAX_PAYLOAD || mfs > FC_SP_MAX_MAX_PAYLOAD) { FC_LPORT_DBG(lport, "FLOGI bad mfs:%hu response, " "lport->mfs:%hu\n", mfs, lport->mfs); fc_lport_error(lport, fp); goto err; } + if (mfs <= lport->mfs) { + lport->mfs = mfs; + fc_host_maxframe_size(lport->host) = mfs; + } + csp_flags = ntohs(flp->fl_csp.sp_features); r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov); e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov); -- cgit v1.1 From 7118c07a844d367560ee91adb2071bde2fabcdbf Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Sat, 14 Apr 2012 12:37:46 -0400 Subject: ipvs: Verify that IP_VS protocol has been registered The registration of a protocol might fail, there were no checks and all registrations were assumed to be correct. This lead to NULL ptr dereferences when apps tried registering. For example: [ 1293.226051] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [ 1293.227038] IP: [] tcp_register_app+0x60/0xb0 [ 1293.227038] PGD 391de067 PUD 6c20b067 PMD 0 [ 1293.227038] Oops: 0000 [#1] PREEMPT SMP [ 1293.227038] CPU 1 [ 1293.227038] Pid: 19609, comm: trinity Tainted: G W 3.4.0-rc1-next-20120405-sasha-dirty #57 [ 1293.227038] RIP: 0010:[] [] tcp_register_app+0x60/0xb0 [ 1293.227038] RSP: 0018:ffff880038c1dd18 EFLAGS: 00010286 [ 1293.227038] RAX: ffffffffffffffc0 RBX: 0000000000001500 RCX: 0000000000010000 [ 1293.227038] RDX: 0000000000000000 RSI: ffff88003a2d5888 RDI: 0000000000000282 [ 1293.227038] RBP: ffff880038c1dd48 R08: 0000000000000000 R09: 0000000000000000 [ 1293.227038] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88003a2d5668 [ 1293.227038] R13: ffff88003a2d5988 R14: ffff8800696a8ff8 R15: 0000000000000000 [ 1293.227038] FS: 00007f01930d9700(0000) GS:ffff88007ce00000(0000) knlGS:0000000000000000 [ 1293.227038] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1293.227038] CR2: 0000000000000018 CR3: 0000000065dfc000 CR4: 00000000000406e0 [ 1293.227038] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1293.227038] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1293.227038] Process trinity (pid: 19609, threadinfo ffff880038c1c000, task ffff88002dc73000) [ 1293.227038] Stack: [ 1293.227038] ffff880038c1dd48 00000000fffffff4 ffff8800696aada0 ffff8800694f5580 [ 1293.227038] ffffffff8369f1e0 0000000000001500 ffff880038c1dd98 ffffffff822a716b [ 1293.227038] 0000000000000000 ffff8800696a8ff8 0000000000000015 ffff8800694f5580 [ 1293.227038] Call Trace: [ 1293.227038] [] ip_vs_app_inc_new+0xdb/0x180 [ 1293.227038] [] register_ip_vs_app_inc+0x48/0x70 [ 1293.227038] [] __ip_vs_ftp_init+0xba/0x140 [ 1293.227038] [] ops_init+0x80/0x90 [ 1293.227038] [] setup_net+0x5b/0xe0 [ 1293.227038] [] copy_net_ns+0x76/0x100 [ 1293.227038] [] create_new_namespaces+0xfb/0x190 [ 1293.227038] [] unshare_nsproxy_namespaces+0x61/0x80 [ 1293.227038] [] sys_unshare+0xff/0x290 [ 1293.227038] [] ? trace_hardirqs_on_thunk+0x3a/0x3f [ 1293.227038] [] system_call_fastpath+0x16/0x1b [ 1293.227038] Code: 89 c7 e8 34 91 3b 00 89 de 66 c1 ee 04 31 de 83 e6 0f 48 83 c6 22 48 c1 e6 04 4a 8b 14 26 49 8d 34 34 48 8d 42 c0 48 39 d6 74 13 <66> 39 58 58 74 22 48 8b 48 40 48 8d 41 c0 48 39 ce 75 ed 49 8d [ 1293.227038] RIP [] tcp_register_app+0x60/0xb0 [ 1293.227038] RSP [ 1293.227038] CR2: 0000000000000018 [ 1293.379284] ---[ end trace 364ab40c7011a009 ]--- [ 1293.381182] Kernel panic - not syncing: Fatal exception in interrupt Signed-off-by: Sasha Levin Acked-by: Julian Anastasov Signed-off-by: Simon Horman Signed-off-by: Pablo Neira Ayuso --- net/netfilter/ipvs/ip_vs_proto.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_proto.c b/net/netfilter/ipvs/ip_vs_proto.c index f843a88..a62360e 100644 --- a/net/netfilter/ipvs/ip_vs_proto.c +++ b/net/netfilter/ipvs/ip_vs_proto.c @@ -59,9 +59,6 @@ static int __used __init register_ip_vs_protocol(struct ip_vs_protocol *pp) return 0; } -#if defined(CONFIG_IP_VS_PROTO_TCP) || defined(CONFIG_IP_VS_PROTO_UDP) || \ - defined(CONFIG_IP_VS_PROTO_SCTP) || defined(CONFIG_IP_VS_PROTO_AH) || \ - defined(CONFIG_IP_VS_PROTO_ESP) /* * register an ipvs protocols netns related data */ @@ -86,7 +83,6 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp) return 0; } -#endif /* * unregister an ipvs protocol @@ -316,22 +312,35 @@ ip_vs_tcpudp_debug_packet(int af, struct ip_vs_protocol *pp, */ int __net_init ip_vs_protocol_net_init(struct net *net) { + int i, ret; + static struct ip_vs_protocol *protos[] = { #ifdef CONFIG_IP_VS_PROTO_TCP - register_ip_vs_proto_netns(net, &ip_vs_protocol_tcp); + &ip_vs_protocol_tcp, #endif #ifdef CONFIG_IP_VS_PROTO_UDP - register_ip_vs_proto_netns(net, &ip_vs_protocol_udp); + &ip_vs_protocol_udp, #endif #ifdef CONFIG_IP_VS_PROTO_SCTP - register_ip_vs_proto_netns(net, &ip_vs_protocol_sctp); + &ip_vs_protocol_sctp, #endif #ifdef CONFIG_IP_VS_PROTO_AH - register_ip_vs_proto_netns(net, &ip_vs_protocol_ah); + &ip_vs_protocol_ah, #endif #ifdef CONFIG_IP_VS_PROTO_ESP - register_ip_vs_proto_netns(net, &ip_vs_protocol_esp); + &ip_vs_protocol_esp, #endif + }; + + for (i = 0; i < ARRAY_SIZE(protos); i++) { + ret = register_ip_vs_proto_netns(net, protos[i]); + if (ret < 0) + goto cleanup; + } return 0; + +cleanup: + ip_vs_protocol_net_cleanup(net); + return ret; } void __net_exit ip_vs_protocol_net_cleanup(struct net *net) -- cgit v1.1 From 8f9b9a2fad47af27e14b037395e03cd8278d96d7 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Fri, 13 Apr 2012 18:08:43 +0300 Subject: ipvs: fix crash in ip_vs_control_net_cleanup on unload commit 14e405461e664b777e2a5636e10b2ebf36a686ec (2.6.39) ("Add __ip_vs_control_{init,cleanup}_sysctl()") introduced regression due to wrong __net_init for __ip_vs_control_cleanup_sysctl. This leads to crash when the ip_vs module is unloaded. Fix it by changing __net_init to __net_exit for the function that is already renamed to ip_vs_control_net_cleanup_sysctl. Signed-off-by: Julian Anastasov Signed-off-by: Hans Schillstrom Signed-off-by: Simon Horman Signed-off-by: Pablo Neira Ayuso --- net/netfilter/ipvs/ip_vs_ctl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index b3afe18..376d2b1 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -3680,7 +3680,7 @@ int __net_init ip_vs_control_net_init_sysctl(struct net *net) return 0; } -void __net_init ip_vs_control_net_cleanup_sysctl(struct net *net) +void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) { struct netns_ipvs *ipvs = net_ipvs(net); @@ -3692,7 +3692,7 @@ void __net_init ip_vs_control_net_cleanup_sysctl(struct net *net) #else int __net_init ip_vs_control_net_init_sysctl(struct net *net) { return 0; } -void __net_init ip_vs_control_net_cleanup_sysctl(struct net *net) { } +void __net_exit ip_vs_control_net_cleanup_sysctl(struct net *net) { } #endif -- cgit v1.1 From c847382838ca503b6c55fb599160146221a2c141 Mon Sep 17 00:00:00 2001 From: Olof Johansson Date: Sun, 8 Apr 2012 16:26:19 -0700 Subject: dma: pl330: fix a couple of compilation warnings Move a couple of tests and do a minor refactor to avoid: drivers/dma/pl330.c: In function 'pl330_probe': drivers/dma/pl330.c:2929:215: warning: comparison of distinct pointer types lacks a cast [enabled by default] drivers/dma/pl330.c: In function 'pl330_tasklet': drivers/dma/pl330.c:2250:8: warning: 'pch' may be used uninitialized in this function [-Wuninitialized] drivers/dma/pl330.c:2228:25: note: 'pch' was declared here drivers/dma/pl330.c:2277:130: warning: 'pch' may be used uninitialized in this function [-Wuninitialized] drivers/dma/pl330.c:2260:25: note: 'pch' was declared here Signed-off-by: Olof Johansson Signed-off-by: Vinod Koul --- drivers/dma/pl330.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 282caf1..2ee6e23 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2225,12 +2225,9 @@ static inline void free_desc_list(struct list_head *list) { struct dma_pl330_dmac *pdmac; struct dma_pl330_desc *desc; - struct dma_pl330_chan *pch; + struct dma_pl330_chan *pch = NULL; unsigned long flags; - if (list_empty(list)) - return; - /* Finish off the work list */ list_for_each_entry(desc, list, node) { dma_async_tx_callback callback; @@ -2247,6 +2244,10 @@ static inline void free_desc_list(struct list_head *list) desc->pchan = NULL; } + /* pch will be unset if list was empty */ + if (!pch) + return; + pdmac = pch->dmac; spin_lock_irqsave(&pdmac->pool_lock, flags); @@ -2257,12 +2258,9 @@ static inline void free_desc_list(struct list_head *list) static inline void handle_cyclic_desc_list(struct list_head *list) { struct dma_pl330_desc *desc; - struct dma_pl330_chan *pch; + struct dma_pl330_chan *pch = NULL; unsigned long flags; - if (list_empty(list)) - return; - list_for_each_entry(desc, list, node) { dma_async_tx_callback callback; @@ -2274,6 +2272,10 @@ static inline void handle_cyclic_desc_list(struct list_head *list) callback(desc->txd.callback_param); } + /* pch will be unset if list was empty */ + if (!pch) + return; + spin_lock_irqsave(&pch->lock, flags); list_splice_tail_init(list, &pch->work_list); spin_unlock_irqrestore(&pch->lock, flags); @@ -2926,8 +2928,11 @@ pl330_probe(struct amba_device *adev, const struct amba_id *id) INIT_LIST_HEAD(&pd->channels); /* Initialize channel parameters */ - num_chan = max(pdat ? pdat->nr_valid_peri : (u8)pi->pcfg.num_peri, - (u8)pi->pcfg.num_chan); + if (pdat) + num_chan = max_t(int, pdat->nr_valid_peri, pi->pcfg.num_chan); + else + num_chan = max_t(int, pi->pcfg.num_peri, pi->pcfg.num_chan); + pdmac->peripherals = kzalloc(num_chan * sizeof(*pch), GFP_KERNEL); for (i = 0; i < num_chan; i++) { -- cgit v1.1 From 88c08a3fba9954ce0ec3e1eab07c498a419ad7e3 Mon Sep 17 00:00:00 2001 From: Davide Ciminaghi Date: Thu, 19 Apr 2012 12:20:24 +0200 Subject: dmaengine/amba-pl08x : reset phychan_hold on terminate all When a client calls pl08x_control with DMA_TERMINATE_ALL, it is correct to terminate and release the phy channel currently in use (if one is in use), but the phychan_hold counter must also be reset (otherwise it could get trapped in an unbalanced state). Signed-off-by: Davide Ciminaghi Reviewed-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Vinod Koul --- drivers/dma/amba-pl08x.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index c301a8e..3d704ab 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1429,6 +1429,7 @@ static int pl08x_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd, * signal */ release_phy_channel(plchan); + plchan->phychan_hold = 0; } /* Dequeue jobs and free LLIs */ if (plchan->at) { -- cgit v1.1 From a3a53fe1545a87337cc539f415810128bbdad465 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 25 Apr 2012 11:29:47 +0200 Subject: ASoC: bf5xx-ssm2602: Set DAI format Commit 980b0bc69 ("ASoC: blackfin: Use dai_fmt") converted the blackfin ASoC machine drivers to use the dai_links dai_fmt field to setup their DAI format. For the bf5xx-ssm2602 the commit removed the manual call to snd_soc_dai_set_fmt, but missed to set the dai_links dai_fmt field. Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown --- sound/soc/blackfin/bf5xx-ssm2602.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/blackfin/bf5xx-ssm2602.c b/sound/soc/blackfin/bf5xx-ssm2602.c index df3ac73..b39ad35 100644 --- a/sound/soc/blackfin/bf5xx-ssm2602.c +++ b/sound/soc/blackfin/bf5xx-ssm2602.c @@ -99,6 +99,7 @@ static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = { .platform_name = "bfin-i2s-pcm-audio", .codec_name = "ssm2602.0-001b", .ops = &bf5xx_ssm2602_ops, + .dai_fmt = BF5XX_SSM2602_DAIFMT, }, { .name = "ssm2602", @@ -108,6 +109,7 @@ static struct snd_soc_dai_link bf5xx_ssm2602_dai[] = { .platform_name = "bfin-i2s-pcm-audio", .codec_name = "ssm2602.0-001b", .ops = &bf5xx_ssm2602_ops, + .dai_fmt = BF5XX_SSM2602_DAIFMT, }, }; -- cgit v1.1 From d0d3bc65afcdd69bdd3b5bebdf8b3ee3680efa0e Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 24 Apr 2012 15:00:53 -0700 Subject: x86/mrst: Quiet sparse noise about plain integer as NULL pointer The second parameter to intel_scu_notifier_post is a void *, not an integer. This quiets the sparse noise: arch/x86/platform/mrst/mrst.c:808:48: warning: Using plain integer as NULL pointer arch/x86/platform/mrst/mrst.c:817:43: warning: Using plain integer as NULL pointer Signed-off-by: H Hartley Sweeten Acked-by: Alan Cox Link: http://lkml.kernel.org/r/201204241500.53685.hartleys@visionengravers.com Signed-off-by: Ingo Molnar --- arch/x86/platform/mrst/mrst.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c index e0a3723..e31bcd8 100644 --- a/arch/x86/platform/mrst/mrst.c +++ b/arch/x86/platform/mrst/mrst.c @@ -805,7 +805,7 @@ void intel_scu_devices_create(void) } else i2c_register_board_info(i2c_bus[i], i2c_devs[i], 1); } - intel_scu_notifier_post(SCU_AVAILABLE, 0L); + intel_scu_notifier_post(SCU_AVAILABLE, NULL); } EXPORT_SYMBOL_GPL(intel_scu_devices_create); @@ -814,7 +814,7 @@ void intel_scu_devices_destroy(void) { int i; - intel_scu_notifier_post(SCU_DOWN, 0L); + intel_scu_notifier_post(SCU_DOWN, NULL); for (i = 0; i < ipc_next_dev; i++) platform_device_del(ipc_devs[i]); -- cgit v1.1 From ea0dcf903e7d76aa5d483d876215fedcfdfe140f Mon Sep 17 00:00:00 2001 From: Greg Pearson Date: Tue, 24 Apr 2012 18:23:56 -0600 Subject: x86/apic: Use x2apic physical mode based on FADT setting Provide systems that do not support x2apic cluster mode a mechanism to select x2apic physical mode using the FADT FORCE_APIC_PHYSICAL_DESTINATION_MODE bit. Changes from v1: (based on Suresh's comments) - removed #ifdef CONFIG_ACPI - removed #include Signed-off-by: Greg Pearson Acked-by: Suresh Siddha Link: http://lkml.kernel.org/r/1335313436-32020-1-git-send-email-greg.pearson@hp.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/x2apic_phys.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c index 8a778db..991e315 100644 --- a/arch/x86/kernel/apic/x2apic_phys.c +++ b/arch/x86/kernel/apic/x2apic_phys.c @@ -24,6 +24,12 @@ static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) { if (x2apic_phys) return x2apic_enabled(); + else if ((acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) && + (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL) && + x2apic_enabled()) { + printk(KERN_DEBUG "System requires x2apic physical mode\n"); + return 1; + } else return 0; } -- cgit v1.1 From a99cd1125189aaf31a7ee505d6208143482119eb Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Fri, 6 Apr 2012 12:53:50 -0400 Subject: init: fix bug where environment vars can't be passed via boot args Commit 026cee0086f had the side-effect of dropping the '=' from the unknown boot arguments that are passed to init as environment variables. This is because parse_args() puts a NUL in the string where the '=' was when it passes the "param" and "val" pointers to the parsing subfunctions. Previously, unknown_bootoption() was the last parse_args() subfunction to run, and it carefully put back the '=' character. Now the ignore_unknown_bootoption() is the last one to run, and it wasn't doing the necessary repair, so the envp params ended up with the embedded NUL and were no longer seen as valid environment variables by init. Tested-by: Woody Suwalski Acked-by: Pawel Moll Signed-off-by: Chris Metcalf --- init/main.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/init/main.c b/init/main.c index 9d454f0..44b2433 100644 --- a/init/main.c +++ b/init/main.c @@ -225,13 +225,9 @@ static int __init loglevel(char *str) early_param("loglevel", loglevel); -/* - * Unknown boot options get handed to init, unless they look like - * unused parameters (modprobe will find them in /proc/cmdline). - */ -static int __init unknown_bootoption(char *param, char *val) +/* Change NUL term back to "=", to make "param" the whole string. */ +static int __init repair_env_string(char *param, char *val) { - /* Change NUL term back to "=", to make "param" the whole string. */ if (val) { /* param=val or param="val"? */ if (val == param+strlen(param)+1) @@ -243,6 +239,16 @@ static int __init unknown_bootoption(char *param, char *val) } else BUG(); } + return 0; +} + +/* + * Unknown boot options get handed to init, unless they look like + * unused parameters (modprobe will find them in /proc/cmdline). + */ +static int __init unknown_bootoption(char *param, char *val) +{ + repair_env_string(param, val); /* Handle obsolete-style parameters */ if (obsolete_checksetup(param)) @@ -732,11 +738,6 @@ static char *initcall_level_names[] __initdata = { "late parameters", }; -static int __init ignore_unknown_bootoption(char *param, char *val) -{ - return 0; -} - static void __init do_initcall_level(int level) { extern const struct kernel_param __start___param[], __stop___param[]; @@ -747,7 +748,7 @@ static void __init do_initcall_level(int level) static_command_line, __start___param, __stop___param - __start___param, level, level, - ignore_unknown_bootoption); + repair_env_string); for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++) do_one_initcall(*fn); -- cgit v1.1 From 05ef1b79d46347f94d9a78214cc745046c03e45a Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Wed, 25 Apr 2012 12:45:26 -0400 Subject: arch/tile: fix a couple of functions that should be __init They were marked __devinit by mistake, causing some warnings at link time. Signed-off-by: Chris Metcalf --- arch/tile/include/asm/pci.h | 4 ++-- arch/tile/kernel/pci.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h index 5d5a635..32e6cbe 100644 --- a/arch/tile/include/asm/pci.h +++ b/arch/tile/include/asm/pci.h @@ -47,8 +47,8 @@ struct pci_controller { */ #define PCI_DMA_BUS_IS_PHYS 1 -int __devinit tile_pci_init(void); -int __devinit pcibios_init(void); +int __init tile_pci_init(void); +int __init pcibios_init(void); static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr) {} diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c index a1bb59e..b56d12b 100644 --- a/arch/tile/kernel/pci.c +++ b/arch/tile/kernel/pci.c @@ -141,7 +141,7 @@ static int __devinit tile_init_irqs(int controller_id, * * Returns the number of controllers discovered. */ -int __devinit tile_pci_init(void) +int __init tile_pci_init(void) { int i; @@ -287,7 +287,7 @@ static void __devinit fixup_read_and_payload_sizes(void) * The controllers have been set up by the time we get here, by a call to * tile_pci_init. */ -int __devinit pcibios_init(void) +int __init pcibios_init(void) { int i; -- cgit v1.1 From a05a4830a32ef9f89e7bd372a7bae9b96b1ac266 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 25 Apr 2012 12:46:50 -0400 Subject: keys: update the documentation with info about "logon" keys Acked-by: David Howells Signed-off-by: Jeff Layton --- Documentation/security/keys.txt | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/Documentation/security/keys.txt b/Documentation/security/keys.txt index 7877170..d389acd 100644 --- a/Documentation/security/keys.txt +++ b/Documentation/security/keys.txt @@ -123,7 +123,7 @@ KEY SERVICE OVERVIEW The key service provides a number of features besides keys: - (*) The key service defines two special key types: + (*) The key service defines three special key types: (+) "keyring" @@ -137,6 +137,18 @@ The key service provides a number of features besides keys: blobs of data. These can be created, updated and read by userspace, and aren't intended for use by kernel services. + (+) "logon" + + Like a "user" key, a "logon" key has a payload that is an arbitrary + blob of data. It is intended as a place to store secrets which are + accessible to the kernel but not to userspace programs. + + The description can be arbitrary, but must be prefixed with a non-zero + length string that describes the key "subclass". The subclass is + separated from the rest of the description by a ':'. "logon" keys can + be created and updated from userspace, but the payload is only + readable from kernel space. + (*) Each process subscribes to three keyrings: a thread-specific keyring, a process-specific keyring, and a session-specific keyring. -- cgit v1.1 From da3a9e9e7b8341cfc939818103cb7ef9f5293de2 Mon Sep 17 00:00:00 2001 From: Benjamin Poirier Date: Wed, 25 Apr 2012 04:49:20 +0000 Subject: tlan: add cast needed for proper 64 bit operation Changes this beauty into a statement that actually has an effect on amd64. Tested-by: Per Jessen Signed-off-by: Benjamin Poirier Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/tlan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c index 817ad3b..efd3669 100644 --- a/drivers/net/ethernet/ti/tlan.c +++ b/drivers/net/ethernet/ti/tlan.c @@ -228,7 +228,7 @@ tlan_get_skb(const struct tlan_list *tag) unsigned long addr; addr = tag->buffer[9].address; - addr |= (tag->buffer[8].address << 16) << 16; + addr |= ((unsigned long) tag->buffer[8].address << 16) << 16; return (struct sk_buff *) addr; } -- cgit v1.1 From f891ea1634ce41f5f47ae40d8594809f4cd2ca66 Mon Sep 17 00:00:00 2001 From: Matt Carlson Date: Tue, 24 Apr 2012 13:37:01 +0000 Subject: tg3: Avoid panic from reserved statblk field access When RSS is enabled, interrupt vector 0 does not receive any rx traffic. The rx producer index fields for vector 0's status block should be considered reserved in this case. This patch changes the code to respect these reserved fields, which avoids a kernel panic when these fields take on non-zero values. Signed-off-by: Matt Carlson Signed-off-by: Michael Chan Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 062ac33..ceeab8e 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -879,8 +879,13 @@ static inline unsigned int tg3_has_work(struct tg3_napi *tnapi) if (sblk->status & SD_STATUS_LINK_CHG) work_exists = 1; } - /* check for RX/TX work to do */ - if (sblk->idx[0].tx_consumer != tnapi->tx_cons || + + /* check for TX work to do */ + if (sblk->idx[0].tx_consumer != tnapi->tx_cons) + work_exists = 1; + + /* check for RX work to do */ + if (tnapi->rx_rcb_prod_idx && *(tnapi->rx_rcb_prod_idx) != tnapi->rx_rcb_ptr) work_exists = 1; @@ -6124,6 +6129,9 @@ static int tg3_poll_work(struct tg3_napi *tnapi, int work_done, int budget) return work_done; } + if (!tnapi->rx_rcb_prod_idx) + return work_done; + /* run RX thread, within the bounds set by NAPI. * All RX "locking" is done by ensuring outside * code synchronizes with tg3->napi.poll() @@ -7567,6 +7575,12 @@ static int tg3_alloc_consistent(struct tg3 *tp) */ switch (i) { default: + if (tg3_flag(tp, ENABLE_RSS)) { + tnapi->rx_rcb_prod_idx = NULL; + break; + } + /* Fall through */ + case 1: tnapi->rx_rcb_prod_idx = &sblk->idx[0].rx_producer; break; case 2: -- cgit v1.1 From c95eeae9e39314273bcda057f27100603d333518 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Thu, 5 Apr 2012 16:15:24 +0200 Subject: i2c: mxs: handle spurious interrupt After an error interrupt setting cmd->err, I see another interrupt that the data engine is empty which clears cmd->err before being processed. So, clear cmd->err at the beginning of a transfer only to handle these consecutive interrupts. Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-mxs.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c index 3d471d5..4c37347 100644 --- a/drivers/i2c/busses/i2c-mxs.c +++ b/drivers/i2c/busses/i2c-mxs.c @@ -227,6 +227,7 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, return -EINVAL; init_completion(&i2c->cmd_complete); + i2c->cmd_err = 0; flags = stop ? MXS_I2C_CTRL0_POST_SEND_STOP : 0; @@ -299,8 +300,6 @@ static irqreturn_t mxs_i2c_isr(int this_irq, void *dev_id) MXS_I2C_CTRL1_SLAVE_STOP_IRQ | MXS_I2C_CTRL1_SLAVE_IRQ)) /* MXS_I2C_CTRL1_OVERSIZE_XFER_TERM_IRQ is only for slaves */ i2c->cmd_err = -EIO; - else - i2c->cmd_err = 0; is_last_cmd = (readl(i2c->regs + MXS_I2C_QUEUESTAT) & MXS_I2C_QUEUESTAT_WRITE_QUEUE_CNT_MASK) == 0; -- cgit v1.1 From 62ad6fcd743792bf294f2a7ba26ab8f462065150 Mon Sep 17 00:00:00 2001 From: Shan Wei Date: Tue, 24 Apr 2012 18:15:41 +0000 Subject: udp_diag: implement idiag_get_info for udp/udplite to get queue information When we use netlink to monitor queue information for udp socket, idiag_rqueue and idiag_wqueue of inet_diag_msg are returned with 0. Keep consistent with netstat, just return back allocated rmem/wmem size. Signed-off-by: Shan Wei Acked-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/ipv4/inet_diag.c | 2 +- net/ipv4/udp_diag.c | 9 +++++++++ 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c index 8d25a1c..8f8db72 100644 --- a/net/ipv4/inet_diag.c +++ b/net/ipv4/inet_diag.c @@ -141,7 +141,7 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk, goto rtattr_failure; if (icsk == NULL) { - r->idiag_rqueue = r->idiag_wqueue = 0; + handler->idiag_get_info(sk, r, NULL); goto out; } diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c index 8a949f1..a7f86a3 100644 --- a/net/ipv4/udp_diag.c +++ b/net/ipv4/udp_diag.c @@ -146,9 +146,17 @@ static int udp_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr *nlh, return udp_dump_one(&udp_table, in_skb, nlh, req); } +static void udp_diag_get_info(struct sock *sk, struct inet_diag_msg *r, + void *info) +{ + r->idiag_rqueue = sk_rmem_alloc_get(sk); + r->idiag_wqueue = sk_wmem_alloc_get(sk); +} + static const struct inet_diag_handler udp_diag_handler = { .dump = udp_diag_dump, .dump_one = udp_diag_dump_one, + .idiag_get_info = udp_diag_get_info, .idiag_type = IPPROTO_UDP, }; @@ -167,6 +175,7 @@ static int udplite_diag_dump_one(struct sk_buff *in_skb, const struct nlmsghdr * static const struct inet_diag_handler udplite_diag_handler = { .dump = udplite_diag_dump, .dump_one = udplite_diag_dump_one, + .idiag_get_info = udp_diag_get_info, .idiag_type = IPPROTO_UDPLITE, }; -- cgit v1.1 From 4e1c2b284461fd8aa8d7b295a1e911fc4390755b Mon Sep 17 00:00:00 2001 From: David Miller Date: Wed, 25 Apr 2012 16:10:50 -0400 Subject: mm: nobootmem: Correct alloc_bootmem semantics. The comments above __alloc_bootmem_node() claim that the code will first try the allocation using 'goal' and if that fails it will try again but with the 'goal' requirement dropped. Unfortunately, this is not what the code does, so fix it to do so. This is important for nobootmem conversions to architectures such as sparc where MAX_DMA_ADDRESS is infinity. On such architectures all of the allocations done by generic spots, such as the sparse-vmemmap implementation, will pass in: __pa(MAX_DMA_ADDRESS) as the goal, and with the limit given as "-1" this will always fail unless we add the appropriate fallback logic here. Signed-off-by: David S. Miller Acked-by: Yinghai Lu Signed-off-by: Linus Torvalds --- mm/nobootmem.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/mm/nobootmem.c b/mm/nobootmem.c index 24f0fc1..e53bb8a 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -298,13 +298,19 @@ void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, if (WARN_ON_ONCE(slab_is_available())) return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); +again: ptr = __alloc_memory_core_early(pgdat->node_id, size, align, goal, -1ULL); if (ptr) return ptr; - return __alloc_memory_core_early(MAX_NUMNODES, size, align, - goal, -1ULL); + ptr = __alloc_memory_core_early(MAX_NUMNODES, size, align, + goal, -1ULL); + if (!ptr && goal) { + goal = 0; + goto again; + } + return ptr; } void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size, -- cgit v1.1 From ce587e65e8c669eec61df7fb1c515720302e3cc0 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Tue, 24 Apr 2012 20:22:33 +0200 Subject: mm: memcg: move pc lookup point to commit_charge() None of the callsites actually need the page_cgroup descriptor themselves, so just pass the page and do the look up in there. We already had two bugs (6568d4a 'mm: memcg: update the correct soft limit tree during migration' and 'memcg: fix Bad page state after replace_page_cache') where the passed page and pc were not referring to the same page frame. Signed-off-by: Johannes Weiner Acked-by: Hugh Dickins Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 17 +++++------------ 1 file changed, 5 insertions(+), 12 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index b868def..31ab9c3 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -2476,10 +2476,10 @@ struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page) static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, struct page *page, unsigned int nr_pages, - struct page_cgroup *pc, enum charge_type ctype, bool lrucare) { + struct page_cgroup *pc = lookup_page_cgroup(page); struct zone *uninitialized_var(zone); bool was_on_lru = false; bool anon; @@ -2716,7 +2716,6 @@ static int mem_cgroup_charge_common(struct page *page, struct mm_struct *mm, { struct mem_cgroup *memcg = NULL; unsigned int nr_pages = 1; - struct page_cgroup *pc; bool oom = true; int ret; @@ -2730,11 +2729,10 @@ static int mem_cgroup_charge_common(struct page *page, struct mm_struct *mm, oom = false; } - pc = lookup_page_cgroup(page); ret = __mem_cgroup_try_charge(mm, gfp_mask, nr_pages, &memcg, oom); if (ret == -ENOMEM) return ret; - __mem_cgroup_commit_charge(memcg, page, nr_pages, pc, ctype, false); + __mem_cgroup_commit_charge(memcg, page, nr_pages, ctype, false); return 0; } @@ -2831,16 +2829,13 @@ static void __mem_cgroup_commit_charge_swapin(struct page *page, struct mem_cgroup *memcg, enum charge_type ctype) { - struct page_cgroup *pc; - if (mem_cgroup_disabled()) return; if (!memcg) return; cgroup_exclude_rmdir(&memcg->css); - pc = lookup_page_cgroup(page); - __mem_cgroup_commit_charge(memcg, page, 1, pc, ctype, true); + __mem_cgroup_commit_charge(memcg, page, 1, ctype, true); /* * Now swap is on-memory. This means this page may be * counted both as mem and swap....double count. @@ -3298,14 +3293,13 @@ int mem_cgroup_prepare_migration(struct page *page, * page. In the case new page is migrated but not remapped, new page's * mapcount will be finally 0 and we call uncharge in end_migration(). */ - pc = lookup_page_cgroup(newpage); if (PageAnon(page)) ctype = MEM_CGROUP_CHARGE_TYPE_MAPPED; else if (page_is_file_cache(page)) ctype = MEM_CGROUP_CHARGE_TYPE_CACHE; else ctype = MEM_CGROUP_CHARGE_TYPE_SHMEM; - __mem_cgroup_commit_charge(memcg, newpage, 1, pc, ctype, false); + __mem_cgroup_commit_charge(memcg, newpage, 1, ctype, false); return ret; } @@ -3392,8 +3386,7 @@ void mem_cgroup_replace_page_cache(struct page *oldpage, * the newpage may be on LRU(or pagevec for LRU) already. We lock * LRU while we overwrite pc->mem_cgroup. */ - pc = lookup_page_cgroup(newpage); - __mem_cgroup_commit_charge(memcg, newpage, 1, pc, type, true); + __mem_cgroup_commit_charge(memcg, newpage, 1, type, true); } #ifdef CONFIG_DEBUG_VM -- cgit v1.1 From b1c12cbcd0a02527c180a862e8971e249d3b347d Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Wed, 25 Apr 2012 16:01:46 -0700 Subject: mm/hugetlb: fix warning in alloc_huge_page/dequeue_huge_page_vma Fix a gcc warning (and bug?) introduced in cc9a6c877 ("cpuset: mm: reduce large amounts of memory barrier related damage v3") Local variable "page" can be uninitialized if the nodemask from vma policy does not intersects with nodemask from cpuset. Even if it doesn't happens it is better to initialize this variable explicitly than to introduce a kernel oops in a weird corner case. mm/hugetlb.c: In function `alloc_huge_page': mm/hugetlb.c:1135:5: warning: `page' may be used uninitialized in this function Signed-off-by: Konstantin Khlebnikov Acked-by: Mel Gorman Acked-by: David Rientjes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hugetlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index cd65cb1..5a16423 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -532,7 +532,7 @@ static struct page *dequeue_huge_page_vma(struct hstate *h, struct vm_area_struct *vma, unsigned long address, int avoid_reserve) { - struct page *page; + struct page *page = NULL; struct mempolicy *mpol; nodemask_t *nodemask; struct zonelist *zonelist; -- cgit v1.1 From 13d518074a952d33d47c428419693f63389547e9 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Wed, 25 Apr 2012 16:01:47 -0700 Subject: epoll: clear the tfile_check_list on -ELOOP An epoll_ctl(,EPOLL_CTL_ADD,,) operation can return '-ELOOP' to prevent circular epoll dependencies from being created. However, in that case we do not properly clear the 'tfile_check_list'. Thus, add a call to clear_tfile_check_list() for the -ELOOP case. Signed-off-by: Jason Baron Reported-by: Yurij M. Plotnikov Cc: Nelson Elhage Cc: Davide Libenzi Tested-by: Alexandra N. Kossovsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/eventpoll.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/eventpoll.c b/fs/eventpoll.c index 739b098..c0b3c70 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1663,8 +1663,10 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, if (op == EPOLL_CTL_ADD) { if (is_file_epoll(tfile)) { error = -ELOOP; - if (ep_loop_check(ep, tfile) != 0) + if (ep_loop_check(ep, tfile) != 0) { + clear_tfile_check_list(); goto error_tgt_fput; + } } else list_add(&tfile->f_tfile_llink, &tfile_check_list); } -- cgit v1.1 From 904249aa68010c8e223263c922fcbb840a3f42e4 Mon Sep 17 00:00:00 2001 From: Ying Han Date: Wed, 25 Apr 2012 16:01:48 -0700 Subject: mm: fix up the vmscan stat in vmstat The "pgsteal" stat is confusing because it counts both direct reclaim as well as background reclaim. However, we have "kswapd_steal" which also counts background reclaim value. This patch fixes it and also makes it match the existng "pgscan_" stats. Test: pgsteal_kswapd_dma32 447623 pgsteal_kswapd_normal 42272677 pgsteal_kswapd_movable 0 pgsteal_direct_dma32 2801 pgsteal_direct_normal 44353270 pgsteal_direct_movable 0 Signed-off-by: Ying Han Reviewed-by: Rik van Riel Acked-by: Christoph Lameter Cc: Johannes Weiner Cc: Michal Hocko Cc: Mel Gorman Acked-by: KAMEZAWA Hiroyuki Cc: Hillf Danton Cc: Hugh Dickins Cc: Dan Magenheimer Reviewed-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vm_event_item.h | 5 +++-- mm/vmscan.c | 11 ++++++++--- mm/vmstat.c | 4 ++-- 3 files changed, 13 insertions(+), 7 deletions(-) diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h index 03b90cdc..06f8e38 100644 --- a/include/linux/vm_event_item.h +++ b/include/linux/vm_event_item.h @@ -26,13 +26,14 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT, PGFREE, PGACTIVATE, PGDEACTIVATE, PGFAULT, PGMAJFAULT, FOR_ALL_ZONES(PGREFILL), - FOR_ALL_ZONES(PGSTEAL), + FOR_ALL_ZONES(PGSTEAL_KSWAPD), + FOR_ALL_ZONES(PGSTEAL_DIRECT), FOR_ALL_ZONES(PGSCAN_KSWAPD), FOR_ALL_ZONES(PGSCAN_DIRECT), #ifdef CONFIG_NUMA PGSCAN_ZONE_RECLAIM_FAILED, #endif - PGINODESTEAL, SLABS_SCANNED, KSWAPD_STEAL, KSWAPD_INODESTEAL, + PGINODESTEAL, SLABS_SCANNED, KSWAPD_INODESTEAL, KSWAPD_LOW_WMARK_HIT_QUICKLY, KSWAPD_HIGH_WMARK_HIT_QUICKLY, KSWAPD_SKIP_CONGESTION_WAIT, PAGEOUTRUN, ALLOCSTALL, PGROTATED, diff --git a/mm/vmscan.c b/mm/vmscan.c index 1a51868..33dc256 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1568,9 +1568,14 @@ shrink_inactive_list(unsigned long nr_to_scan, struct mem_cgroup_zone *mz, reclaim_stat->recent_scanned[0] += nr_anon; reclaim_stat->recent_scanned[1] += nr_file; - if (current_is_kswapd()) - __count_vm_events(KSWAPD_STEAL, nr_reclaimed); - __count_zone_vm_events(PGSTEAL, zone, nr_reclaimed); + if (global_reclaim(sc)) { + if (current_is_kswapd()) + __count_zone_vm_events(PGSTEAL_KSWAPD, zone, + nr_reclaimed); + else + __count_zone_vm_events(PGSTEAL_DIRECT, zone, + nr_reclaimed); + } putback_inactive_pages(mz, &page_list); diff --git a/mm/vmstat.c b/mm/vmstat.c index f600557..7db1b9b 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -738,7 +738,8 @@ const char * const vmstat_text[] = { "pgmajfault", TEXTS_FOR_ZONES("pgrefill") - TEXTS_FOR_ZONES("pgsteal") + TEXTS_FOR_ZONES("pgsteal_kswapd") + TEXTS_FOR_ZONES("pgsteal_direct") TEXTS_FOR_ZONES("pgscan_kswapd") TEXTS_FOR_ZONES("pgscan_direct") @@ -747,7 +748,6 @@ const char * const vmstat_text[] = { #endif "pginodesteal", "slabs_scanned", - "kswapd_steal", "kswapd_inodesteal", "kswapd_low_wmark_hit_quickly", "kswapd_high_wmark_hit_quickly", -- cgit v1.1 From 61065a30af8df4b8989c2ac7a1f4b4034e4df2d5 Mon Sep 17 00:00:00 2001 From: Glauber Costa Date: Wed, 25 Apr 2012 16:01:48 -0700 Subject: fs/buffer.c: remove BUG() in possible but rare condition While stressing the kernel with with failing allocations today, I hit the following chain of events: alloc_page_buffers(): bh = alloc_buffer_head(GFP_NOFS); if (!bh) goto no_grow; <= path taken grow_dev_page(): bh = alloc_page_buffers(page, size, 0); if (!bh) goto failed; <= taken, consequence of the above and then the failed path BUG()s the kernel. The failure is inserted a litte bit artificially, but even then, I see no reason why it should be deemed impossible in a real box. Even though this is not a condition that we expect to see around every time, failed allocations are expected to be handled, and BUG() sounds just too much. As a matter of fact, grow_dev_page() can return NULL just fine in other circumstances, so I propose we just remove it, then. Signed-off-by: Glauber Costa Cc: Michal Hocko Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/buffer.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/buffer.c b/fs/buffer.c index 36d6665..351e18e 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -985,7 +985,6 @@ grow_dev_page(struct block_device *bdev, sector_t block, return page; failed: - BUG(); unlock_page(page); page_cache_release(page); return NULL; -- cgit v1.1 From e39a9ba2889edbfbda4a9336ea718b2e25a9c2b2 Mon Sep 17 00:00:00 2001 From: Clay Carpenter Date: Wed, 25 Apr 2012 16:01:49 -0700 Subject: acerhdf: add support for Aspire 1410 BIOS v1.3314 Add support for Aspire 1410 BIOS v1.3314. Fixes the following error: acerhdf: unknown (unsupported) BIOS version Acer/Aspire 1410/v1.3314, please report, aborting! Signed-off-by: Clay Carpenter Signed-off-by: Peter Feuerer Cc: Matthew Garrett Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/platform/x86/acerhdf.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c index bc8384c..9a19349 100644 --- a/drivers/platform/x86/acerhdf.c +++ b/drivers/platform/x86/acerhdf.c @@ -161,6 +161,7 @@ static const struct bios_settings_t bios_tbl[] = { {"Acer", "Aspire 1410", "v1.3303", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1410", "v1.3308", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1410", "v1.3310", 0x55, 0x58, {0x9e, 0x00} }, + {"Acer", "Aspire 1410", "v1.3314", 0x55, 0x58, {0x9e, 0x00} }, /* Acer 1810xx */ {"Acer", "Aspire 1810TZ", "v0.3108", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1810T", "v0.3108", 0x55, 0x58, {0x9e, 0x00} }, -- cgit v1.1 From 43ae1e32e0b540fa04f059b7aa3b4f5cf49fc9ad Mon Sep 17 00:00:00 2001 From: Peter Feuerer Date: Wed, 25 Apr 2012 16:01:49 -0700 Subject: acerhdf: add support for new hardware Add support for new hardware: Acer Aspire LT-10Q/531/751/1810/1825, Acer Travelmate 7730, Packard Bell ENBFT/DOTVR46 Signed-off-by: Peter Feuerer Acked-by: Borislav Petkov Cc: Matthew Garrett Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/platform/x86/acerhdf.c | 62 ++++++++++++++++++++++++++++-------------- 1 file changed, 42 insertions(+), 20 deletions(-) diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c index 9a19349..c697d80 100644 --- a/drivers/platform/x86/acerhdf.c +++ b/drivers/platform/x86/acerhdf.c @@ -50,7 +50,7 @@ */ #undef START_IN_KERNEL_MODE -#define DRV_VER "0.5.24" +#define DRV_VER "0.5.26" /* * According to the Atom N270 datasheet, @@ -150,6 +150,8 @@ static const struct bios_settings_t bios_tbl[] = { {"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00} }, {"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00} }, {"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00} }, + /* LT1005u */ + {"Acer", "LT-10Q", "v0.3310", 0x55, 0x58, {0x20, 0x00} }, /* Acer 1410 */ {"Acer", "Aspire 1410", "v0.3108", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1410", "v0.3113", 0x55, 0x58, {0x9e, 0x00} }, @@ -184,29 +186,44 @@ static const struct bios_settings_t bios_tbl[] = { {"Acer", "Aspire 1810TZ", "v1.3310", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1810T", "v1.3310", 0x55, 0x58, {0x9e, 0x00} }, {"Acer", "Aspire 1810TZ", "v1.3314", 0x55, 0x58, {0x9e, 0x00} }, + {"Acer", "Aspire 1810T", "v1.3314", 0x55, 0x58, {0x9e, 0x00} }, /* Acer 531 */ + {"Acer", "AO531h", "v0.3104", 0x55, 0x58, {0x20, 0x00} }, {"Acer", "AO531h", "v0.3201", 0x55, 0x58, {0x20, 0x00} }, + {"Acer", "AO531h", "v0.3304", 0x55, 0x58, {0x20, 0x00} }, + /* Acer 751 */ + {"Acer", "AO751h", "V0.3212", 0x55, 0x58, {0x21, 0x00} }, + /* Acer 1825 */ + {"Acer", "Aspire 1825PTZ", "V1.3118", 0x55, 0x58, {0x9e, 0x00} }, + {"Acer", "Aspire 1825PTZ", "V1.3127", 0x55, 0x58, {0x9e, 0x00} }, + /* Acer TravelMate 7730 */ + {"Acer", "TravelMate 7730G", "v0.3509", 0x55, 0x58, {0xaf, 0x00} }, /* Gateway */ - {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00} }, - {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00} }, - {"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00} }, - {"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00} }, - {"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00} }, + {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00} }, + {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00} }, + {"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00} }, + {"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00} }, + {"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00} }, + {"Gateway", "LT31", "v1.3303t", 0x55, 0x58, {0x9e, 0x00} }, /* Packard Bell */ - {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00} }, - {"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} }, - {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00} }, - {"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} }, - {"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00} }, - {"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00} }, + {"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} }, + {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00} }, + {"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00} }, + {"Packard Bell", "ENBFT", "V1.3118", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "ENBFT", "V1.3127", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTMA", "v1.3303t", 0x55, 0x58, {0x9e, 0x00} }, + {"Packard Bell", "DOTVR46", "v1.3308", 0x55, 0x58, {0x9e, 0x00} }, /* pewpew-terminator */ {"", "", "", 0, 0, {0, 0} } }; @@ -702,15 +719,20 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Peter Feuerer"); MODULE_DESCRIPTION("Aspire One temperature and fan driver"); MODULE_ALIAS("dmi:*:*Acer*:pnAOA*:"); +MODULE_ALIAS("dmi:*:*Acer*:pnAO751h*:"); MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1410*:"); MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1810*:"); +MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1825PTZ:"); MODULE_ALIAS("dmi:*:*Acer*:pnAO531*:"); +MODULE_ALIAS("dmi:*:*Acer*:TravelMate*7730G:"); MODULE_ALIAS("dmi:*:*Gateway*:pnAOA*:"); MODULE_ALIAS("dmi:*:*Gateway*:pnLT31*:"); MODULE_ALIAS("dmi:*:*Packard*Bell*:pnAOA*:"); MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOA*:"); MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:"); +MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:"); MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:"); +MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:"); module_init(acerhdf_init); module_exit(acerhdf_exit); -- cgit v1.1 From 351963bb58af5717359544087b9f634c27b9b155 Mon Sep 17 00:00:00 2001 From: Peter Feuerer Date: Wed, 25 Apr 2012 16:01:49 -0700 Subject: acerhdf: lowered default temp fanon/fanoff values Due to new supported hardware, of which the actual temperature limits of processor, harddisk and other components are unknown, it feels safer with lower fanon / fanoff settings. It won't change much for most people, already using acerhdf, as they use their own fanon/fanoff variable settings when loading the module. Furthermore seems like kernel and userspace tools have been improved to work more efficient and netbooks don't get so hot anymore. Signed-off-by: Peter Feuerer Acked-by: Borislav Petkov Cc: Matthew Garrett Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/platform/x86/acerhdf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c index c697d80..639db4d 100644 --- a/drivers/platform/x86/acerhdf.c +++ b/drivers/platform/x86/acerhdf.c @@ -83,8 +83,8 @@ static int kernelmode; #endif static unsigned int interval = 10; -static unsigned int fanon = 63000; -static unsigned int fanoff = 58000; +static unsigned int fanon = 60000; +static unsigned int fanoff = 53000; static unsigned int verbose; static unsigned int fanstate = ACERHDF_FAN_AUTO; static char force_bios[16]; -- cgit v1.1 From 65ed76010dfed3cb75c863c9052c367a1bacf80a Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 25 Apr 2012 16:01:50 -0700 Subject: hugetlbfs: lockdep annotate root inode properly This fixes the below reported false lockdep warning. e096d0c7e2e4 ("lockdep: Add helper function for dir vs file i_mutex annotation") added a similar annotation for every other inode in hugetlbfs but missed the root inode because it was allocated by a separate function. For HugeTLB fs we allow taking i_mutex in mmap. HugeTLB fs doesn't support file write and its file read callback is modified in a05b0855fd ("hugetlbfs: avoid taking i_mutex from hugetlbfs_read()") to not take i_mutex. Hence for HugeTLB fs with regular files we really don't take i_mutex with mmap_sem held. ====================================================== [ INFO: possible circular locking dependency detected ] 3.4.0-rc1+ #322 Not tainted ------------------------------------------------------- bash/1572 is trying to acquire lock: (&mm->mmap_sem){++++++}, at: [] might_fault+0x40/0x90 but task is already holding lock: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [] vfs_readdir+0x56/0xa8 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (&sb->s_type->i_mutex_key#12){+.+.+.}: [] lock_acquire+0xd5/0xfa [] __mutex_lock_common+0x48/0x350 [] mutex_lock_nested+0x2a/0x31 [] hugetlbfs_file_mmap+0x7d/0x104 [] mmap_region+0x272/0x47d [] do_mmap_pgoff+0x294/0x2ee [] sys_mmap_pgoff+0xd2/0x10e [] sys_mmap+0x1d/0x1f [] system_call_fastpath+0x16/0x1b -> #0 (&mm->mmap_sem){++++++}: [] __lock_acquire+0xa81/0xd75 [] lock_acquire+0xd5/0xfa [] might_fault+0x6d/0x90 [] filldir+0x6a/0xc2 [] dcache_readdir+0x5c/0x222 [] vfs_readdir+0x76/0xa8 [] sys_getdents+0x79/0xc9 [] system_call_fastpath+0x16/0x1b other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&sb->s_type->i_mutex_key#12); lock(&mm->mmap_sem); lock(&sb->s_type->i_mutex_key#12); lock(&mm->mmap_sem); *** DEADLOCK *** 1 lock held by bash/1572: #0: (&sb->s_type->i_mutex_key#12){+.+.+.}, at: [] vfs_readdir+0x56/0xa8 stack backtrace: Pid: 1572, comm: bash Not tainted 3.4.0-rc1+ #322 Call Trace: [] print_circular_bug+0x1f8/0x209 [] __lock_acquire+0xa81/0xd75 [] ? handle_pte_fault+0x5ff/0x614 [] ? mark_lock+0x2d/0x258 [] ? might_fault+0x40/0x90 [] lock_acquire+0xd5/0xfa [] ? might_fault+0x40/0x90 [] ? __mutex_lock_common+0x333/0x350 [] might_fault+0x6d/0x90 [] ? might_fault+0x40/0x90 [] filldir+0x6a/0xc2 [] dcache_readdir+0x5c/0x222 [] ? sys_ioctl+0x74/0x74 [] ? sys_ioctl+0x74/0x74 [] ? sys_ioctl+0x74/0x74 [] vfs_readdir+0x76/0xa8 [] sys_getdents+0x79/0xc9 [] system_call_fastpath+0x16/0x1b Signed-off-by: Aneesh Kumar K.V Cc: Dave Jones Cc: Al Viro Cc: Josh Boyer Cc: Peter Zijlstra Cc: Mimi Zohar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/hugetlbfs/inode.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c index 28cf06e..001ef01 100644 --- a/fs/hugetlbfs/inode.c +++ b/fs/hugetlbfs/inode.c @@ -485,6 +485,7 @@ static struct inode *hugetlbfs_get_root(struct super_block *sb, inode->i_fop = &simple_dir_operations; /* directory inodes start off with i_nlink == 2 (for "." entry) */ inc_nlink(inode); + lockdep_annotate_inode_mutex_key(inode); } return inode; } -- cgit v1.1 From db7b122cf5f769046d410f82a1e9fe7006ed955a Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Wed, 25 Apr 2012 16:01:51 -0700 Subject: arch/arm/mach-ux500/mbox-db5500.c: world-writable sysfs fifo file Don't allow everybody to use a modem. Signed-off-by: Vasiliy Kulikov Cc: Srinidhi Kasagar Acked-by: Linus Walleij Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/arm/mach-ux500/mbox-db5500.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-ux500/mbox-db5500.c b/arch/arm/mach-ux500/mbox-db5500.c index 2b2d51c..0127490 100644 --- a/arch/arm/mach-ux500/mbox-db5500.c +++ b/arch/arm/mach-ux500/mbox-db5500.c @@ -168,7 +168,7 @@ static ssize_t mbox_read_fifo(struct device *dev, return sprintf(buf, "0x%X\n", mbox_value); } -static DEVICE_ATTR(fifo, S_IWUGO | S_IRUGO, mbox_read_fifo, mbox_write_fifo); +static DEVICE_ATTR(fifo, S_IWUSR | S_IRUGO, mbox_read_fifo, mbox_write_fifo); static int mbox_show(struct seq_file *s, void *data) { -- cgit v1.1 From 3f5ec5e06d6ca88168277247dbac0ec7b501600f Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Wed, 25 Apr 2012 16:01:51 -0700 Subject: drivers/rtc/rtc-ds1307.c: fix BUG shown with lock debugging enabled Add struct bin_attribute initialization to fix the following bug: rtc-ds1307 3-0068: rtc core: registered ds1307 as rtc0 BUG: key cfb14fcc not in .data! ------------[ cut here ]------------ WARNING: at kernel/lockdep.c:2986 sysfs_add_file_mode+0x84/0xdc() Modules linked in: [] (unwind_backtrace+0x0/0xf8) from [] (warn_slowpath_common+0x4c/0x64) [] (warn_slowpath_common+0x4c/0x64) from [] (warn_slowpath_null+0x1c/0x24) [] (warn_slowpath_null+0x1c/0x24) from [] (sysfs_add_file_mode+0x84/0xdc) [] (sysfs_add_file_mode+0x84/0xdc) from [] (ds1307_probe+0x5e4/0x6ac) [] (ds1307_probe+0x5e4/0x6ac) from [] (i2c_device_probe+0xdc/0x108) [] (i2c_device_probe+0xdc/0x108) from [] (driver_probe_device+0x90/0x210) [] (driver_probe_device+0x90/0x210) from [] (__driver_attach+0x94/0x98) [] (__driver_attach+0x94/0x98) from [] (bus_for_each_dev+0x50/0x7c) [] (bus_for_each_dev+0x50/0x7c) from [] (bus_add_driver+0x184/0x244) [] (bus_add_driver+0x184/0x244) from [] (driver_register+0x78/0x12c) [] (driver_register+0x78/0x12c) from [] (i2c_register_driver+0x2c/0xb4) [] (i2c_register_driver+0x2c/0xb4) from [] (do_one_initcall+0x34/0x178) [] (do_one_initcall+0x34/0x178) from [] (kernel_init+0xdc/0x194) [] (kernel_init+0xdc/0x194) from [] (kernel_thread_exit+0x0/0x8) Since commit 6992f5334995af4 ("sysfs: Use one lockdep class per sysfs attribute") this initialization is required. Reported-by: Stefano Babic Tested-by: Stefano Babic Signed-off-by: Anatolij Gustschin Cc: Alessandro Zummo Cc: Stefano Babic Cc: Eric W. Biederman Cc: Greg Kroah-Hartman Acked-by: Wolfram Sang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-ds1307.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index cd188ab..c293d0c 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -902,6 +902,7 @@ read_rtc: } ds1307->nvram->attr.name = "nvram"; ds1307->nvram->attr.mode = S_IRUGO | S_IWUSR; + sysfs_bin_attr_init(ds1307->nvram); ds1307->nvram->read = ds1307_nvram_read, ds1307->nvram->write = ds1307_nvram_write, ds1307->nvram->size = chip->nvram_size; -- cgit v1.1 From 63f61a6f4633ff34c17bea7a0ed827eaeb0733e1 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Wed, 25 Apr 2012 16:01:52 -0700 Subject: revert "proc: clear_refs: do not clear reserved pages" Revert commit 85e72aa5384 ("proc: clear_refs: do not clear reserved pages"), which was a quick fix suitable for -stable until ARM had been moved over to the gate_vma mechanism: https://lkml.org/lkml/2012/1/14/55 With commit f9d4861f ("ARM: 7294/1: vectors: use gate_vma for vectors user mapping"), ARM does now use the gate_vma, so the PageReserved check can be removed from the proc code. Signed-off-by: Will Deacon Cc: Nicolas Pitre Acked-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/task_mmu.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 2b9a760..2d60492 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -597,9 +597,6 @@ static int clear_refs_pte_range(pmd_t *pmd, unsigned long addr, if (!page) continue; - if (PageReserved(page)) - continue; - /* Clear accessed and referenced bits. */ ptep_test_and_clear_young(vma, addr, pte); ClearPageReferenced(page); -- cgit v1.1 From f2a9ef880763d7fbd657a3af646e132a90d70d34 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 25 Apr 2012 16:01:52 -0700 Subject: mm: fix NULL ptr dereference in migrate_pages Commit 3268c63 ("mm: fix move/migrate_pages() race on task struct") has added an odd construct where 'mm' is checked for being NULL, and if it is, it would get dereferenced anyways by mput()ing it. This would lead to the following NULL ptr deref and BUG() when calling migrate_pages() with a pid that has no mm struct: [25904.193704] BUG: unable to handle kernel NULL pointer dereference at 0000000000000050 [25904.194235] IP: [] mmput+0x27/0xf0 [25904.194235] PGD 773e6067 PUD 77da0067 PMD 0 [25904.194235] Oops: 0002 [#1] PREEMPT SMP [25904.194235] CPU 2 [25904.194235] Pid: 31608, comm: trinity Tainted: G W 3.4.0-rc2-next-20120412-sasha #69 [25904.194235] RIP: 0010:[] [] mmput+0x27/0xf0 [25904.194235] RSP: 0018:ffff880077d49e08 EFLAGS: 00010202 [25904.194235] RAX: 0000000000000286 RBX: 0000000000000000 RCX: 0000000000000000 [25904.194235] RDX: ffff880075ef8000 RSI: 000000000000023d RDI: 0000000000000286 [25904.194235] RBP: ffff880077d49e18 R08: 0000000000000001 R09: 0000000000000001 [25904.194235] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [25904.194235] R13: 00000000ffffffea R14: ffff880034287740 R15: ffff8800218d3010 [25904.194235] FS: 00007fc8b244c700(0000) GS:ffff880029800000(0000) knlGS:0000000000000000 [25904.194235] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [25904.194235] CR2: 0000000000000050 CR3: 00000000767c6000 CR4: 00000000000406e0 [25904.194235] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [25904.194235] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [25904.194235] Process trinity (pid: 31608, threadinfo ffff880077d48000, task ffff880075ef8000) [25904.194235] Stack: [25904.194235] ffff8800342876c0 0000000000000000 ffff880077d49f78 ffffffff811b8020 [25904.194235] ffffffff811b7d91 ffff880075ef8000 ffff88002256d200 0000000000000000 [25904.194235] 00000000000003ff 0000000000000000 0000000000000000 0000000000000000 [25904.194235] Call Trace: [25904.194235] [] sys_migrate_pages+0x340/0x3a0 [25904.194235] [] ? sys_migrate_pages+0xb1/0x3a0 [25904.194235] [] system_call_fastpath+0x16/0x1b [25904.194235] Code: c9 c3 66 90 55 31 d2 48 89 e5 be 3d 02 00 00 48 83 ec 10 48 89 1c 24 4c 89 64 24 08 48 89 fb 48 c7 c7 cf 0e e1 82 e8 69 18 03 00 ff 4b 50 0f 94 c0 84 c0 0f 84 aa 00 00 00 48 89 df e8 72 f1 [25904.194235] RIP [] mmput+0x27/0xf0 [25904.194235] RSP [25904.194235] CR2: 0000000000000050 [25904.348999] ---[ end trace a307b3ed40206b4b ]--- Signed-off-by: Sasha Levin Cc: Dave Hansen Cc: Mel Gorman Cc: Johannes Weiner Cc: KOSAKI Motohiro Cc: KAMEZAWA Hiroyuki Cc: Hugh Dickins Cc: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/mempolicy.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/mm/mempolicy.c b/mm/mempolicy.c index cfb6c86..b195691 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -1361,11 +1361,14 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode, mm = get_task_mm(task); put_task_struct(task); - if (mm) - err = do_migrate_pages(mm, old, new, - capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE); - else + + if (!mm) { err = -EINVAL; + goto out; + } + + err = do_migrate_pages(mm, old, new, + capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE); mmput(mm); out: -- cgit v1.1 From 6e8b09eaf268bceac0c62e389b4bc0cb83dfb8e5 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 25 Apr 2012 16:01:53 -0700 Subject: mm: fix NULL ptr dereference in move_pages Commit 3268c63 ("mm: fix move/migrate_pages() race on task struct") has added an odd construct where 'mm' is checked for being NULL, and if it is, it would get dereferenced anyways by mput()ing it. Signed-off-by: Sasha Levin Cc: Dave Hansen Cc: Mel Gorman Cc: Johannes Weiner Cc: KOSAKI Motohiro Cc: KAMEZAWA Hiroyuki Cc: Hugh Dickins Acked-by: Christoph Lameter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/migrate.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 51c08a0..1107238 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1388,14 +1388,14 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages, mm = get_task_mm(task); put_task_struct(task); - if (mm) { - if (nodes) - err = do_pages_move(mm, task_nodes, nr_pages, pages, - nodes, status, flags); - else - err = do_pages_stat(mm, nr_pages, pages, status); - } else - err = -EINVAL; + if (!mm) + return -EINVAL; + + if (nodes) + err = do_pages_move(mm, task_nodes, nr_pages, pages, + nodes, status, flags); + else + err = do_pages_stat(mm, nr_pages, pages, status); mmput(mm); return err; -- cgit v1.1 From 8d08d71ce59438a6ef06be5db07966e0c144b74e Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Wed, 25 Apr 2012 00:29:59 +0300 Subject: ipvs: add check in ftp for initialized core Avoid crash when registering ip_vs_ftp after the IPVS core initialization for netns fails. Do this by checking for present core (net->ipvs). Signed-off-by: Julian Anastasov Acked-by: Hans Schillstrom Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_ftp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/netfilter/ipvs/ip_vs_ftp.c b/net/netfilter/ipvs/ip_vs_ftp.c index 538d74e..e39f693 100644 --- a/net/netfilter/ipvs/ip_vs_ftp.c +++ b/net/netfilter/ipvs/ip_vs_ftp.c @@ -439,6 +439,8 @@ static int __net_init __ip_vs_ftp_init(struct net *net) struct ip_vs_app *app; struct netns_ipvs *ipvs = net_ipvs(net); + if (!ipvs) + return -ENOENT; app = kmemdup(&ip_vs_ftp, sizeof(struct ip_vs_app), GFP_KERNEL); if (!app) return -ENOMEM; -- cgit v1.1 From 39f618b4fd95ae243d940ec64c961009c74e3333 Mon Sep 17 00:00:00 2001 From: Julian Anastasov Date: Wed, 25 Apr 2012 00:29:58 +0300 Subject: ipvs: reset ipvs pointer in netns Make sure net->ipvs is reset on netns cleanup or failed initialization. It is needed for IPVS applications to know that IPVS core is not loaded in netns. Signed-off-by: Julian Anastasov Acked-by: Hans Schillstrom Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 2555816..260b9ef 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1924,6 +1924,7 @@ protocol_fail: control_fail: ip_vs_estimator_net_cleanup(net); estimator_fail: + net->ipvs = NULL; return -ENOMEM; } @@ -1936,6 +1937,7 @@ static void __net_exit __ip_vs_cleanup(struct net *net) ip_vs_control_net_cleanup(net); ip_vs_estimator_net_cleanup(net); IP_VS_DBG(2, "ipvs netns %d released\n", net_ipvs(net)->gen); + net->ipvs = NULL; } static void __net_exit __ip_vs_dev_cleanup(struct net *net) -- cgit v1.1 From 5d384574e8bceb9bada323da8044ca43e621886b Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Wed, 25 Apr 2012 07:32:11 +0000 Subject: ehea: fix allmulticast support There was a bug in the mask of regtype parameter for registering a multicast filter. It was ignoring the scope bit, which was wrongly being used for all filters. The SCOPE_ALL value adds a filter that allows all multicast packets and ignores the MAC parameter, just what allmulticast needs. The normals filters, however, should not use SCOPE_ALL. Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ehea/ehea_main.c | 24 +++++++++++++++--------- drivers/net/ethernet/ibm/ehea/ehea_phyp.h | 2 +- 2 files changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index acf34b6..9dcb5fd 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -290,16 +290,18 @@ static void ehea_update_bcmc_registrations(void) arr[i].adh = adapter->handle; arr[i].port_id = port->logical_port_id; - arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | - EHEA_BCMC_MULTICAST | + arr[i].reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED; + if (mc_entry->macaddr == 0) + arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL; arr[i++].macaddr = mc_entry->macaddr; arr[i].adh = adapter->handle; arr[i].port_id = port->logical_port_id; - arr[i].reg_type = EHEA_BCMC_SCOPE_ALL | - EHEA_BCMC_MULTICAST | + arr[i].reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL; + if (mc_entry->macaddr == 0) + arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL; arr[i++].macaddr = mc_entry->macaddr; num_registrations -= 2; } @@ -1838,8 +1840,9 @@ static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, u64 hret; u8 reg_type; - reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST - | EHEA_BCMC_UNTAGGED; + reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED; + if (mc_mac_addr == 0) + reg_type |= EHEA_BCMC_SCOPE_ALL; hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, port->logical_port_id, @@ -1847,8 +1850,9 @@ static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr, if (hret) goto out; - reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST - | EHEA_BCMC_VLANID_ALL; + reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL; + if (mc_mac_addr == 0) + reg_type |= EHEA_BCMC_SCOPE_ALL; hret = ehea_h_reg_dereg_bcmc(port->adapter->handle, port->logical_port_id, @@ -1898,7 +1902,7 @@ static void ehea_allmulti(struct net_device *dev, int enable) netdev_err(dev, "failed enabling IFF_ALLMULTI\n"); } - } else + } else { if (!enable) { /* Disable ALLMULTI */ hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC); @@ -1908,6 +1912,7 @@ static void ehea_allmulti(struct net_device *dev, int enable) netdev_err(dev, "failed disabling IFF_ALLMULTI\n"); } + } } static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr) @@ -2463,6 +2468,7 @@ static int ehea_down(struct net_device *dev) return 0; ehea_drop_multicast_list(dev); + ehea_allmulti(dev, 0); ehea_broadcast_reg_helper(port, H_DEREG_BCMC); ehea_free_interrupts(dev); diff --git a/drivers/net/ethernet/ibm/ehea/ehea_phyp.h b/drivers/net/ethernet/ibm/ehea/ehea_phyp.h index 52c456e..8364815 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_phyp.h +++ b/drivers/net/ethernet/ibm/ehea/ehea_phyp.h @@ -450,7 +450,7 @@ u64 ehea_h_modify_ehea_port(const u64 adapter_handle, const u16 port_num, void *cb_addr); #define H_REGBCMC_PN EHEA_BMASK_IBM(48, 63) -#define H_REGBCMC_REGTYPE EHEA_BMASK_IBM(61, 63) +#define H_REGBCMC_REGTYPE EHEA_BMASK_IBM(60, 63) #define H_REGBCMC_MACADDR EHEA_BMASK_IBM(16, 63) #define H_REGBCMC_VLANID EHEA_BMASK_IBM(52, 63) -- cgit v1.1 From 47d59d01322f60d1c46fdf2650e0613daa8ce637 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Wed, 25 Apr 2012 07:32:12 +0000 Subject: ehea: fix promiscuous mode commit a4910b744486254cfa61995954c118fb2283c4fd has broken promiscuous mode, which is never set. port->promisc just reflects the last setting of PROMISCUOUS mode to avoid doing an extra hypercall when it's already set. However, since it may fail because of hypervisor permissions, we should still respect the multicast settings and not simply exit after setting promiscuous mode. Signed-off-by: Thadeu Lima de Souza Cascardo Cc: Breno Leitao Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ehea/ehea_main.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index 9dcb5fd..c9069a2 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -1946,11 +1946,7 @@ static void ehea_set_multicast_list(struct net_device *dev) struct netdev_hw_addr *ha; int ret; - if (port->promisc) { - ehea_promiscuous(dev, 1); - return; - } - ehea_promiscuous(dev, 0); + ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC)); if (dev->flags & IFF_ALLMULTI) { ehea_allmulti(dev, 1); -- cgit v1.1 From e48b5e825f9c471cbcbfd934a4c2df27e9d39635 Mon Sep 17 00:00:00 2001 From: John Stultz Date: Tue, 24 Apr 2012 13:43:35 -0700 Subject: rtc: Fix possible null pointer dereference in rtc-mpc5121.c Mark Loard pointed out: "For example, this beauty from rtc-mpc5121.c in the same update: ... rtc->rtc = rtc_device_register("mpc5200-rtc", &op->dev, &mpc5200_rtc_ops, THIS_MODULE); ... rtc->rtc->uie_unsupported = 1; // <<<< Ooops NULL pointer >>>> if (IS_ERR(rtc->rtc)) { // <<<< this needs to be earlier >>>> err = PTR_ERR(rtc->rtc); goto out_free_irq; } ..." This patch moves setting the uie_unsupported flag to after we validate the rtc->rtc pointer to resolve this. Reported by: Mark Lord Signed-off-by: John Stultz Link: http://lkml.kernel.org/r/1335300215-21427-1-git-send-email-john.stultz@linaro.org Signed-off-by: Thomas Gleixner --- drivers/rtc/rtc-mpc5121.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c index 42f5f82..029e421 100644 --- a/drivers/rtc/rtc-mpc5121.c +++ b/drivers/rtc/rtc-mpc5121.c @@ -360,12 +360,11 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op) &mpc5200_rtc_ops, THIS_MODULE); } - rtc->rtc->uie_unsupported = 1; - if (IS_ERR(rtc->rtc)) { err = PTR_ERR(rtc->rtc); goto out_free_irq; } + rtc->rtc->uie_unsupported = 1; return 0; -- cgit v1.1 From 0848e4043014631d792a66266d6d7d64a7f21da5 Mon Sep 17 00:00:00 2001 From: "alex.bluesman.smirnov@gmail.com" Date: Wed, 25 Apr 2012 23:24:56 +0000 Subject: 6lowpan: fix segmentation fault caused by mlme request Add nescesary mlme callbacks to satisfy "iz list" request from user space. Due to 6lowpan device doesn't have its own phy, mlme implemented as a pipe to a real phy to which 6lowpan is attached. Signed-off-by: Alexander Smirnov Signed-off-by: David S. Miller --- net/ieee802154/6lowpan.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index 3685158..f6b1694 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -1044,6 +1044,24 @@ static void lowpan_dev_free(struct net_device *dev) free_netdev(dev); } +static struct wpan_phy *lowpan_get_phy(const struct net_device *dev) +{ + struct net_device *real_dev = lowpan_dev_info(dev)->real_dev; + return ieee802154_mlme_ops(real_dev)->get_phy(real_dev); +} + +static u16 lowpan_get_pan_id(const struct net_device *dev) +{ + struct net_device *real_dev = lowpan_dev_info(dev)->real_dev; + return ieee802154_mlme_ops(real_dev)->get_pan_id(real_dev); +} + +static u16 lowpan_get_short_addr(const struct net_device *dev) +{ + struct net_device *real_dev = lowpan_dev_info(dev)->real_dev; + return ieee802154_mlme_ops(real_dev)->get_short_addr(real_dev); +} + static struct header_ops lowpan_header_ops = { .create = lowpan_header_create, }; @@ -1053,6 +1071,12 @@ static const struct net_device_ops lowpan_netdev_ops = { .ndo_set_mac_address = eth_mac_addr, }; +static struct ieee802154_mlme_ops lowpan_mlme = { + .get_pan_id = lowpan_get_pan_id, + .get_phy = lowpan_get_phy, + .get_short_addr = lowpan_get_short_addr, +}; + static void lowpan_setup(struct net_device *dev) { pr_debug("(%s)\n", __func__); @@ -1070,6 +1094,7 @@ static void lowpan_setup(struct net_device *dev) dev->netdev_ops = &lowpan_netdev_ops; dev->header_ops = &lowpan_header_ops; + dev->ml_priv = &lowpan_mlme; dev->destructor = lowpan_dev_free; } -- cgit v1.1 From 8deff4af8745561efd2be34ee30cc57a6f0107c6 Mon Sep 17 00:00:00 2001 From: "alex.bluesman.smirnov@gmail.com" Date: Wed, 25 Apr 2012 23:24:57 +0000 Subject: 6lowpan: clean up fragments list if module unloaded Clean all the pending fragments and relative timers if 6lowpan link is going to be deleted. Signed-off-by: Alexander Smirnov Signed-off-by: David S. Miller --- net/ieee802154/6lowpan.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index f6b1694..b3021f7 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -1177,11 +1177,20 @@ static void lowpan_dellink(struct net_device *dev, struct list_head *head) { struct lowpan_dev_info *lowpan_dev = lowpan_dev_info(dev); struct net_device *real_dev = lowpan_dev->real_dev; - struct lowpan_dev_record *entry; - struct lowpan_dev_record *tmp; + struct lowpan_dev_record *entry, *tmp; + struct lowpan_fragment *frame, *tframe; ASSERT_RTNL(); + spin_lock(&flist_lock); + list_for_each_entry_safe(frame, tframe, &lowpan_fragments, list) { + del_timer(&frame->timer); + list_del(&frame->list); + dev_kfree_skb(frame->skb); + kfree(frame); + } + spin_unlock(&flist_lock); + mutex_lock(&lowpan_dev_info(dev)->dev_list_mtx); list_for_each_entry_safe(entry, tmp, &lowpan_devices, list) { if (entry->ldev == dev) { -- cgit v1.1 From 768f7c7c121e80f458a9d013b2e8b169e5dfb1e5 Mon Sep 17 00:00:00 2001 From: "alex.bluesman.smirnov@gmail.com" Date: Wed, 25 Apr 2012 23:24:58 +0000 Subject: 6lowpan: add missing spin_lock_init() Add missing spin_lock_init() for frames list lock. Signed-off-by: Alexander Smirnov Signed-off-by: David S. Miller --- net/ieee802154/6lowpan.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ieee802154/6lowpan.c b/net/ieee802154/6lowpan.c index b3021f7..840821b 100644 --- a/net/ieee802154/6lowpan.c +++ b/net/ieee802154/6lowpan.c @@ -1168,6 +1168,8 @@ static int lowpan_newlink(struct net *src_net, struct net_device *dev, list_add_tail(&entry->list, &lowpan_devices); mutex_unlock(&lowpan_dev_info(dev)->dev_list_mtx); + spin_lock_init(&flist_lock); + register_netdevice(dev); return 0; -- cgit v1.1 From 1bb57e940e1958e40d51f2078f50c3a96a9b2d75 Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Wed, 25 Apr 2012 14:32:09 +0000 Subject: dl2k: Clean up rio_ioctl The dl2k driver's rio_ioctl call has a few issues: - No permissions checking - Implements SIOCGMIIREG and SIOCGMIIREG using the SIOCDEVPRIVATE numbers - Has a few ioctls that may have been used for debugging at one point but have no place in the kernel proper. This patch removes all but the MII ioctls, renumbers them to use the standard ones, and adds the proper permission check for SIOCSMIIREG. We can also get rid of the dl2k-specific struct mii_data in favor of the generic struct mii_ioctl_data. Since we have the phyid on hand, we can add the SIOCGMIIPHY ioctl too. Most of the MII code for the driver could probably be converted to use the generic MII library but I don't have a device to test the results. Reported-by: Stephan Mueller Signed-off-by: Jeff Mahoney Signed-off-by: David S. Miller --- drivers/net/ethernet/dlink/dl2k.c | 52 +++++++-------------------------------- drivers/net/ethernet/dlink/dl2k.h | 7 ------ 2 files changed, 9 insertions(+), 50 deletions(-) diff --git a/drivers/net/ethernet/dlink/dl2k.c b/drivers/net/ethernet/dlink/dl2k.c index b2dc2c8..2e09edb 100644 --- a/drivers/net/ethernet/dlink/dl2k.c +++ b/drivers/net/ethernet/dlink/dl2k.c @@ -1259,55 +1259,21 @@ rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd) { int phy_addr; struct netdev_private *np = netdev_priv(dev); - struct mii_data *miidata = (struct mii_data *) &rq->ifr_ifru; - - struct netdev_desc *desc; - int i; + struct mii_ioctl_data *miidata = if_mii(rq); phy_addr = np->phy_addr; switch (cmd) { - case SIOCDEVPRIVATE: - break; - - case SIOCDEVPRIVATE + 1: - miidata->out_value = mii_read (dev, phy_addr, miidata->reg_num); + case SIOCGMIIPHY: + miidata->phy_id = phy_addr; break; - case SIOCDEVPRIVATE + 2: - mii_write (dev, phy_addr, miidata->reg_num, miidata->in_value); + case SIOCGMIIREG: + miidata->val_out = mii_read (dev, phy_addr, miidata->reg_num); break; - case SIOCDEVPRIVATE + 3: - break; - case SIOCDEVPRIVATE + 4: - break; - case SIOCDEVPRIVATE + 5: - netif_stop_queue (dev); + case SIOCSMIIREG: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + mii_write (dev, phy_addr, miidata->reg_num, miidata->val_in); break; - case SIOCDEVPRIVATE + 6: - netif_wake_queue (dev); - break; - case SIOCDEVPRIVATE + 7: - printk - ("tx_full=%x cur_tx=%lx old_tx=%lx cur_rx=%lx old_rx=%lx\n", - netif_queue_stopped(dev), np->cur_tx, np->old_tx, np->cur_rx, - np->old_rx); - break; - case SIOCDEVPRIVATE + 8: - printk("TX ring:\n"); - for (i = 0; i < TX_RING_SIZE; i++) { - desc = &np->tx_ring[i]; - printk - ("%02x:cur:%08x next:%08x status:%08x frag1:%08x frag0:%08x", - i, - (u32) (np->tx_ring_dma + i * sizeof (*desc)), - (u32)le64_to_cpu(desc->next_desc), - (u32)le64_to_cpu(desc->status), - (u32)(le64_to_cpu(desc->fraginfo) >> 32), - (u32)le64_to_cpu(desc->fraginfo)); - printk ("\n"); - } - printk ("\n"); - break; - default: return -EOPNOTSUPP; } diff --git a/drivers/net/ethernet/dlink/dl2k.h b/drivers/net/ethernet/dlink/dl2k.h index ba0adca..30c2da3 100644 --- a/drivers/net/ethernet/dlink/dl2k.h +++ b/drivers/net/ethernet/dlink/dl2k.h @@ -365,13 +365,6 @@ struct ioctl_data { char *data; }; -struct mii_data { - __u16 reserved; - __u16 reg_num; - __u16 in_value; - __u16 out_value; -}; - /* The Rx and Tx buffer descriptors. */ struct netdev_desc { __le64 next_desc; -- cgit v1.1 From 07d69d4238418746a7b85c5d05ec17c658a2a390 Mon Sep 17 00:00:00 2001 From: Paolo Pisati Date: Mon, 23 Apr 2012 04:05:20 +0000 Subject: smsc95xx: mark link down on startup and let PHY interrupt deal with carrier changes Without this patch sysfs reports the cable as present flag@flag-desktop:~$ cat /sys/class/net/eth0/carrier 1 while it's not: flag@flag-desktop:~$ sudo mii-tool eth0 eth0: no link Tested on my Beagle XM. v2: added mantainer to the list of recipient Signed-off-by: Paolo Pisati Acked-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc95xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c index 53a1ba5..94ae669 100644 --- a/drivers/net/usb/smsc95xx.c +++ b/drivers/net/usb/smsc95xx.c @@ -1192,7 +1192,7 @@ static const struct driver_info smsc95xx_info = { .rx_fixup = smsc95xx_rx_fixup, .tx_fixup = smsc95xx_tx_fixup, .status = smsc95xx_status, - .flags = FLAG_ETHER | FLAG_SEND_ZLP, + .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, }; static const struct usb_device_id products[] = { -- cgit v1.1 From eb95308ee2a69403909e111837b9068c64cfc349 Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 17 Apr 2012 13:38:40 +0200 Subject: sched: Fix more load-balancing fallout Commits 367456c756a6 ("sched: Ditch per cgroup task lists for load-balancing") and 5d6523ebd ("sched: Fix load-balance wreckage") left some more wreckage. By setting loop_max unconditionally to ->nr_running load-balancing could take a lot of time on very long runqueues (hackbench!). So keep the sysctl as max limit of the amount of tasks we'll iterate. Furthermore, the min load filter for migration completely fails with cgroups since inequality in per-cpu state can easily lead to such small loads :/ Furthermore the change to add new tasks to the tail of the queue instead of the head seems to have some effect.. not quite sure I understand why. Combined these fixes solve the huge hackbench regression reported by Tim when hackbench is ran in a cgroup. Reported-by: Tim Chen Acked-by: Tim Chen Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Link: http://lkml.kernel.org/r/1335365763.28150.267.camel@twins [ got rid of the CONFIG_PREEMPT tuning and made small readability edits ] Signed-off-by: Ingo Molnar --- kernel/sched/fair.c | 18 ++++++++++-------- kernel/sched/features.h | 1 + 2 files changed, 11 insertions(+), 8 deletions(-) diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 0d97ebd..e955364 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -784,7 +784,7 @@ account_entity_enqueue(struct cfs_rq *cfs_rq, struct sched_entity *se) update_load_add(&rq_of(cfs_rq)->load, se->load.weight); #ifdef CONFIG_SMP if (entity_is_task(se)) - list_add_tail(&se->group_node, &rq_of(cfs_rq)->cfs_tasks); + list_add(&se->group_node, &rq_of(cfs_rq)->cfs_tasks); #endif cfs_rq->nr_running++; } @@ -3215,6 +3215,8 @@ static int move_one_task(struct lb_env *env) static unsigned long task_h_load(struct task_struct *p); +static const unsigned int sched_nr_migrate_break = 32; + /* * move_tasks tries to move up to load_move weighted load from busiest to * this_rq, as part of a balancing operation within domain "sd". @@ -3242,7 +3244,7 @@ static int move_tasks(struct lb_env *env) /* take a breather every nr_migrate tasks */ if (env->loop > env->loop_break) { - env->loop_break += sysctl_sched_nr_migrate; + env->loop_break += sched_nr_migrate_break; env->flags |= LBF_NEED_BREAK; break; } @@ -3252,7 +3254,7 @@ static int move_tasks(struct lb_env *env) load = task_h_load(p); - if (load < 16 && !env->sd->nr_balance_failed) + if (sched_feat(LB_MIN) && load < 16 && !env->sd->nr_balance_failed) goto next; if ((load / 2) > env->load_move) @@ -4407,7 +4409,7 @@ static int load_balance(int this_cpu, struct rq *this_rq, .dst_cpu = this_cpu, .dst_rq = this_rq, .idle = idle, - .loop_break = sysctl_sched_nr_migrate, + .loop_break = sched_nr_migrate_break, }; cpumask_copy(cpus, cpu_active_mask); @@ -4445,10 +4447,10 @@ redo: * correctly treated as an imbalance. */ env.flags |= LBF_ALL_PINNED; - env.load_move = imbalance; - env.src_cpu = busiest->cpu; - env.src_rq = busiest; - env.loop_max = busiest->nr_running; + env.load_move = imbalance; + env.src_cpu = busiest->cpu; + env.src_rq = busiest; + env.loop_max = min_t(unsigned long, sysctl_sched_nr_migrate, busiest->nr_running); more_balance: local_irq_save(flags); diff --git a/kernel/sched/features.h b/kernel/sched/features.h index e61fd73..de00a48 100644 --- a/kernel/sched/features.h +++ b/kernel/sched/features.h @@ -68,3 +68,4 @@ SCHED_FEAT(TTWU_QUEUE, true) SCHED_FEAT(FORCE_SD_OVERLAP, false) SCHED_FEAT(RT_RUNTIME_SHARE, true) +SCHED_FEAT(LB_MIN, false) -- cgit v1.1 From fb2cf2c660971bea0ad86a9a5c19ad39eab61344 Mon Sep 17 00:00:00 2001 From: "he, bo" Date: Wed, 25 Apr 2012 19:59:21 +0800 Subject: sched: Fix OOPS when build_sched_domains() percpu allocation fails Under extreme memory used up situations, percpu allocation might fail. We hit it when system goes to suspend-to-ram, causing a kworker panic: EIP: [] build_sched_domains+0x23a/0xad0 Kernel panic - not syncing: Fatal exception Pid: 3026, comm: kworker/u:3 3.0.8-137473-gf42fbef #1 Call Trace: [] panic+0x66/0x16c [...] [] partition_sched_domains+0x287/0x4b0 [] cpuset_update_active_cpus+0x1fe/0x210 [] cpuset_cpu_inactive+0x1d/0x30 [...] With this fix applied build_sched_domains() will return -ENOMEM and the suspend attempt fails. Signed-off-by: he, bo Reviewed-by: Zhang, Yanmin Reviewed-by: Srivatsa S. Bhat Signed-off-by: Peter Zijlstra Cc: Linus Torvalds Cc: Andrew Morton Cc: Link: http://lkml.kernel.org/r/1335355161.5892.17.camel@hebo [ So, we fail to deallocate a CPU because we cannot allocate RAM :-/ I don't like that kind of sad behavior but nevertheless it should not crash under high memory load. ] Signed-off-by: Ingo Molnar --- kernel/sched/core.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 4603b9d..0533a68 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -6405,16 +6405,26 @@ static void __sdt_free(const struct cpumask *cpu_map) struct sd_data *sdd = &tl->data; for_each_cpu(j, cpu_map) { - struct sched_domain *sd = *per_cpu_ptr(sdd->sd, j); - if (sd && (sd->flags & SD_OVERLAP)) - free_sched_groups(sd->groups, 0); - kfree(*per_cpu_ptr(sdd->sd, j)); - kfree(*per_cpu_ptr(sdd->sg, j)); - kfree(*per_cpu_ptr(sdd->sgp, j)); + struct sched_domain *sd; + + if (sdd->sd) { + sd = *per_cpu_ptr(sdd->sd, j); + if (sd && (sd->flags & SD_OVERLAP)) + free_sched_groups(sd->groups, 0); + kfree(*per_cpu_ptr(sdd->sd, j)); + } + + if (sdd->sg) + kfree(*per_cpu_ptr(sdd->sg, j)); + if (sdd->sgp) + kfree(*per_cpu_ptr(sdd->sgp, j)); } free_percpu(sdd->sd); + sdd->sd = NULL; free_percpu(sdd->sg); + sdd->sg = NULL; free_percpu(sdd->sgp); + sdd->sgp = NULL; } } -- cgit v1.1 From 724b6daa13e100067c30cfc4d1ad06629609dc4e Mon Sep 17 00:00:00 2001 From: Michael Ellerman Date: Wed, 11 Apr 2012 11:54:13 +1000 Subject: perf: Fix perf_event_for_each() to use sibling In perf_event_for_each() we call a function on an event, and then iterate over the siblings of the event. However we don't call the function on the siblings, we call it repeatedly on the original event - it seems "obvious" that we should be calling it with sibling as the argument. It looks like this broke in commit 75f937f24bd9 ("Fix ctx->mutex vs counter->mutex inversion"). The only effect of the bug is that the PERF_IOC_FLAG_GROUP parameter to the ioctls doesn't work. Signed-off-by: Michael Ellerman Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/1334109253-31329-1-git-send-email-michael@ellerman.id.au Signed-off-by: Ingo Molnar --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index a6a9ec4..fd126f8 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3183,7 +3183,7 @@ static void perf_event_for_each(struct perf_event *event, perf_event_for_each_child(event, func); func(event); list_for_each_entry(sibling, &event->sibling_list, group_entry) - perf_event_for_each_child(event, func); + perf_event_for_each_child(sibling, func); mutex_unlock(&ctx->mutex); } -- cgit v1.1 From d08c9a33b4aa6665b0ee3c4d1b57715fa0eae2a2 Mon Sep 17 00:00:00 2001 From: "Mingarelli, Thomas" Date: Tue, 3 Apr 2012 05:37:01 +0000 Subject: hpwdt: Only BYTE reads/writes to WD Timer port 0x72 This patch is to correct the use of the iLO port 0x72 usage. The port 0x72 is a byte size write/read and hpwdt is currently writing a WORD. Signed-off by: Thomas Mingarelli Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/hpwdt.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c index cbc7cee..9f13b89 100644 --- a/drivers/watchdog/hpwdt.c +++ b/drivers/watchdog/hpwdt.c @@ -435,16 +435,16 @@ static void hpwdt_start(void) { reload = SECS_TO_TICKS(soft_margin); iowrite16(reload, hpwdt_timer_reg); - iowrite16(0x85, hpwdt_timer_con); + iowrite8(0x85, hpwdt_timer_con); } static void hpwdt_stop(void) { unsigned long data; - data = ioread16(hpwdt_timer_con); + data = ioread8(hpwdt_timer_con); data &= 0xFE; - iowrite16(data, hpwdt_timer_con); + iowrite8(data, hpwdt_timer_con); } static void hpwdt_ping(void) -- cgit v1.1 From c3e40a9972428d6e2d8e287ed0233a57a218c30f Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Wed, 25 Apr 2012 13:44:20 -0700 Subject: hwmon: (fam15h_power) Fix pci_device_id array pci_match_id() takes an *array* of IDs which must be properly zero- terminated. Reported-by: Ben Hutchings Cc: stable@vger.kernel.org # 3.0+: 00250ec hwmon: fam15h_power: fix bogus values Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Guenter Roeck Acked-by: Jean Delvare --- drivers/hwmon/fam15h_power.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c index 37a8fc9..e8e18ca 100644 --- a/drivers/hwmon/fam15h_power.c +++ b/drivers/hwmon/fam15h_power.c @@ -128,17 +128,20 @@ static bool __devinit fam15h_power_is_internal_node0(struct pci_dev *f4) * counter saturations resulting in bogus power readings. * We correct this value ourselves to cope with older BIOSes. */ +static DEFINE_PCI_DEVICE_TABLE(affected_device) = { + { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }, + { 0 } +}; + static void __devinit tweak_runavg_range(struct pci_dev *pdev) { u32 val; - const struct pci_device_id affected_device = { - PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }; /* * let this quirk apply only to the current version of the * northbridge, since future versions may change the behavior */ - if (!pci_match_id(&affected_device, pdev)) + if (!pci_match_id(affected_device, pdev)) return; pci_bus_read_config_dword(pdev->bus, -- cgit v1.1 From 1aba1567637b93eee32253b42deaaad381c3175b Mon Sep 17 00:00:00 2001 From: Weston Andros Adamson Date: Tue, 24 Apr 2012 16:50:37 -0400 Subject: nfs4: fix referrals on mounts that use IPv6 addrs All referrals (IPv4 addr, IPv6 addr, and DNS) are broken on mounts of IPv6 addresses, because validation code uses a path that is parsed from the dev_name (":") by splitting on the first colon and colons are used in IPv6 addrs. This patch ignores colons within IPv6 addresses that are escaped by '[' and ']'. Signed-off-by: Weston Andros Adamson Signed-off-by: Trond Myklebust --- fs/nfs/nfs4namespace.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 9c8eca31..7483a17 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -52,6 +52,30 @@ Elong: } /* + * return the path component of ":" + * nfspath - the ":" string + * end - one past the last char that could contain ":" + * returns NULL on failure + */ +static char *nfs_path_component(const char *nfspath, const char *end) +{ + char *p; + + if (*nfspath == '[') { + /* parse [] escaped IPv6 addrs */ + p = strchr(nfspath, ']'); + if (p != NULL && ++p < end && *p == ':') + return p + 1; + } else { + /* otherwise split on first colon */ + p = strchr(nfspath, ':'); + if (p != NULL && p < end) + return p + 1; + } + return NULL; +} + +/* * Determine the mount path as a string */ static char *nfs4_path(struct dentry *dentry, char *buffer, ssize_t buflen) @@ -59,9 +83,9 @@ static char *nfs4_path(struct dentry *dentry, char *buffer, ssize_t buflen) char *limit; char *path = nfs_path(&limit, dentry, buffer, buflen); if (!IS_ERR(path)) { - char *colon = strchr(path, ':'); - if (colon && colon < limit) - path = colon + 1; + char *path_component = nfs_path_component(path, limit); + if (path_component) + return path_component; } return path; } -- cgit v1.1 From 9526b2b6d6b9f183b66cf21c4afa6e79d5a14f44 Mon Sep 17 00:00:00 2001 From: Sachin Bhamare Date: Fri, 30 Mar 2012 14:29:59 -0700 Subject: pnfs-obj: Remove unused variable from objlayout_get_deviceinfo() Local variable 'sb' was not being used in objlayout_get_deviceinfo(). Signed-off-by: Sachin Bhamare Signed-off-by: Boaz Harrosh Signed-off-by: Trond Myklebust --- fs/nfs/objlayout/objlayout.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 8d45f1c..595c5fc 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -604,7 +604,6 @@ int objlayout_get_deviceinfo(struct pnfs_layout_hdr *pnfslay, { struct objlayout_deviceinfo *odi; struct pnfs_device pd; - struct super_block *sb; struct page *page, **pages; u32 *p; int err; @@ -623,7 +622,6 @@ int objlayout_get_deviceinfo(struct pnfs_layout_hdr *pnfslay, pd.pglen = PAGE_SIZE; pd.mincount = 0; - sb = pnfslay->plh_inode->i_sb; err = nfs4_proc_getdeviceinfo(NFS_SERVER(pnfslay->plh_inode), &pd); dprintk("%s nfs_getdeviceinfo returned %d\n", __func__, err); if (err) -- cgit v1.1 From e5265a0c587423bbd21a6b39a572cecff16b9346 Mon Sep 17 00:00:00 2001 From: Andy Adamson Date: Sat, 14 Apr 2012 03:56:35 -0400 Subject: NFSv4.1 fix page number calculation bug for filelayout decode buffers Signed-off-by: Andy Adamson Signed-off-by: Trond Myklebust --- fs/nfs/nfs4filelayoutdev.c | 2 +- fs/nfs/pnfs.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/nfs/nfs4filelayoutdev.c b/fs/nfs/nfs4filelayoutdev.c index a866bbd..c9cff9a 100644 --- a/fs/nfs/nfs4filelayoutdev.c +++ b/fs/nfs/nfs4filelayoutdev.c @@ -699,7 +699,7 @@ get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id, gfp_t gfp_fla * GETDEVICEINFO's maxcount */ max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - max_pages = max_resp_sz >> PAGE_SHIFT; + max_pages = nfs_page_array_len(0, max_resp_sz); dprintk("%s inode %p max_resp_sz %u max_pages %d\n", __func__, inode, max_resp_sz, max_pages); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index b5d4515..38512bc 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -587,7 +587,7 @@ send_layoutget(struct pnfs_layout_hdr *lo, /* allocate pages for xdr post processing */ max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - max_pages = max_resp_sz >> PAGE_SHIFT; + max_pages = nfs_page_array_len(0, max_resp_sz); pages = kcalloc(max_pages, sizeof(struct page *), gfp_flags); if (!pages) -- cgit v1.1 From 10bd295a0b6488ebe634b72a11d8986bd3af3819 Mon Sep 17 00:00:00 2001 From: Jim Rees Date: Mon, 9 Apr 2012 22:33:39 -0400 Subject: fix page number calculation bug for block layout decode buffer Signed-off-by: Jim Rees Suggested-by: Andy Adamson Suggested-by: Fred Isaman Signed-off-by: Trond Myklebust --- fs/nfs/blocklayout/blocklayout.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index 9c94297..7f6a23f 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -38,6 +38,8 @@ #include /* various write calls */ #include +#include "../pnfs.h" +#include "../internal.h" #include "blocklayout.h" #define NFSDBG_FACILITY NFSDBG_PNFS_LD @@ -868,7 +870,7 @@ nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh, * GETDEVICEINFO's maxcount */ max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - max_pages = max_resp_sz >> PAGE_SHIFT; + max_pages = nfs_page_array_len(0, max_resp_sz); dprintk("%s max_resp_sz %u max_pages %d\n", __func__, max_resp_sz, max_pages); -- cgit v1.1 From 6651819b4b4fc3caa6964c5d825eb4bb996f3905 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 1 Apr 2012 19:16:18 +0200 Subject: drm/i915: handle input/output sdvo timings separately in mode_set We seem to have a decent confusion between the output timings and the input timings of the sdvo encoder. If I understand the code correctly, we use the original mode unchanged for the output timings, safe for the lvds case. And we should use the adjusted mode for input timings. Clarify the situation by adding an explicit output_dtd to the sdvo mode_set function and streamline the code-flow by moving the input and output mode setting in the sdvo encode together. Furthermore testing showed that the sdvo input timing needs the unadjusted dotclock, the sdvo chip will automatically compute the required pixel multiplier to get a dotclock above 100 MHz. Fix this up when converting a drm mode to an sdvo dtd. This regression was introduced in commit c74696b9c890074c1e1ee3d7496fc71eb3680ced Author: Pavel Roskin Date: Thu Sep 2 14:46:34 2010 -0400 i915: revert some checks added by commit 32aad86f particularly the following hunk: diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 093e914..62d22ae 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1122,11 +1123,9 @@ static void intel_sdvo_mode_set(struct drm_encoder *encoder, /* We have tried to get input timing in mode_fixup, and filled into adjusted_mode */ - if (intel_sdvo->is_tv || intel_sdvo->is_lvds) { - intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode); + intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode); + if (intel_sdvo->is_tv || intel_sdvo->is_lvds) input_dtd.part2.sdvo_flags = intel_sdvo->sdvo_flags; - } else - intel_sdvo_get_dtd_from_mode(&input_dtd, mode); /* If it's a TV, we already set the output timing in mode_fixup. * Otherwise, the output timing is equal to the input timing. Due to questions raised in review, below a more elaborate analysis of the bug at hand: Sdvo seems to have two timings, one is the output timing which will be sent over whatever is connected on the other side of the sdvo chip (panel, hdmi screen, tv), the other is the input timing which will be generated by the gmch pipe. It looks like sdvo is expected to scale between the two. To make things slightly more complicated, we have a bunch of special cases: - For lvds panel we always use a fixed output timing, namely intel_sdvo->sdvo_lvds_fixed_mode, hence that special case. - Sdvo has an interface to generate a preferred input timing for a given output timing. This is the confusing thing that I've tried to clear up with the follow-on patches. - A special requirement is that the input pixel clock needs to be between 100MHz and 200MHz (likely to keep it within the electromechanical design range of PCIe), 270MHz on later gen4+. Lower pixel clocks are doubled/quadrupled. The thing this patch tries to fix is that the pipe needs to be explicitly instructed to double/quadruple the pixels and needs the correspondingly higher pixel clock, whereas the sdvo adaptor seems to do that itself and needs the unadjusted pixel clock. For the sdvo encode side we already set the pixel mutliplier with a different command (0x21). This patch tries to fix this mess by: - Keeping the output mode timing in the unadjusted plain mode, safe for the lvds case. - Storing the input timing in the adjusted_mode with the adjusted pixel clock. This way we don't need to frob around with the core crtc mode set code. - Fixing up the pixelclock when constructing the sdvo dtd timing struct. This is why the first hunk of the patch is an integral part of the series. - Dropping the is_tv special case because input_dtd is equivalent to adjusted_mode after these changes. Follow-up patches clear this up further (by simply ripping out intel_sdvo->input_dtd because it's not needed). v2: Extend commit message with an in-depth bug analysis. Reported-and-Tested-by: Bernard Blackham Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=48157 Reviewed-by: Jesse Barnes Cc: stable@kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_sdvo.c | 34 ++++++++++++++++++---------------- 1 file changed, 18 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index e36b171..232d77d 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -731,6 +731,7 @@ static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd, uint16_t width, height; uint16_t h_blank_len, h_sync_len, v_blank_len, v_sync_len; uint16_t h_sync_offset, v_sync_offset; + int mode_clock; width = mode->crtc_hdisplay; height = mode->crtc_vdisplay; @@ -745,7 +746,11 @@ static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd, h_sync_offset = mode->crtc_hsync_start - mode->crtc_hblank_start; v_sync_offset = mode->crtc_vsync_start - mode->crtc_vblank_start; - dtd->part1.clock = mode->clock / 10; + mode_clock = mode->clock; + mode_clock /= intel_mode_get_pixel_multiplier(mode) ?: 1; + mode_clock /= 10; + dtd->part1.clock = mode_clock; + dtd->part1.h_active = width & 0xff; dtd->part1.h_blank = h_blank_len & 0xff; dtd->part1.h_high = (((width >> 8) & 0xf) << 4) | @@ -996,7 +1001,7 @@ static void intel_sdvo_mode_set(struct drm_encoder *encoder, struct intel_sdvo *intel_sdvo = to_intel_sdvo(encoder); u32 sdvox; struct intel_sdvo_in_out_map in_out; - struct intel_sdvo_dtd input_dtd; + struct intel_sdvo_dtd input_dtd, output_dtd; int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode); int rate; @@ -1021,20 +1026,13 @@ static void intel_sdvo_mode_set(struct drm_encoder *encoder, intel_sdvo->attached_output)) return; - /* We have tried to get input timing in mode_fixup, and filled into - * adjusted_mode. - */ - if (intel_sdvo->is_tv || intel_sdvo->is_lvds) { - input_dtd = intel_sdvo->input_dtd; - } else { - /* Set the output timing to the screen */ - if (!intel_sdvo_set_target_output(intel_sdvo, - intel_sdvo->attached_output)) - return; - - intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode); - (void) intel_sdvo_set_output_timing(intel_sdvo, &input_dtd); - } + /* lvds has a special fixed output timing. */ + if (intel_sdvo->is_lvds) + intel_sdvo_get_dtd_from_mode(&output_dtd, + intel_sdvo->sdvo_lvds_fixed_mode); + else + intel_sdvo_get_dtd_from_mode(&output_dtd, mode); + (void) intel_sdvo_set_output_timing(intel_sdvo, &output_dtd); /* Set the input timing to the screen. Assume always input 0. */ if (!intel_sdvo_set_target_input(intel_sdvo)) @@ -1052,6 +1050,10 @@ static void intel_sdvo_mode_set(struct drm_encoder *encoder, !intel_sdvo_set_tv_format(intel_sdvo)) return; + /* We have tried to get input timing in mode_fixup, and filled into + * adjusted_mode. + */ + intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode); (void) intel_sdvo_set_input_timing(intel_sdvo, &input_dtd); switch (pixel_multiplier) { -- cgit v1.1 From cd0a2bfb77a3edeecd652081e0b1a163d3b0696b Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 17:17:19 -0400 Subject: pci: frv architecture needs generic setup-bus infrastructure Otherwise we get this link failure for frv's defconfig: LD .tmp_vmlinux1 drivers/built-in.o: In function `pci_assign_resource': (.text+0xbf0c): undefined reference to `pci_cardbus_resource_alignment' drivers/built-in.o: In function `pci_setup': pci.c:(.init.text+0x174): undefined reference to `pci_realloc_get_opt' pci.c:(.init.text+0x1a0): undefined reference to `pci_realloc_get_opt' make[1]: *** [.tmp_vmlinux1] Error 1 Cc: David Howells Acked-by: Bjorn Helgaas Signed-off-by: Paul Gortmaker --- drivers/pci/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile index 083a49f..165274c 100644 --- a/drivers/pci/Makefile +++ b/drivers/pci/Makefile @@ -42,6 +42,7 @@ obj-$(CONFIG_UNICORE32) += setup-bus.o setup-irq.o obj-$(CONFIG_PARISC) += setup-bus.o obj-$(CONFIG_SUPERH) += setup-bus.o setup-irq.o obj-$(CONFIG_PPC) += setup-bus.o +obj-$(CONFIG_FRV) += setup-bus.o obj-$(CONFIG_MIPS) += setup-bus.o setup-irq.o obj-$(CONFIG_X86_VISWS) += setup-irq.o obj-$(CONFIG_MN10300) += setup-bus.o -- cgit v1.1 From bc856a62c8036330cb2d95e24756285c6d8ecba2 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 22:32:24 -0400 Subject: blackfin: fix compile error in bfin-lq035q1-fb.c This file has an implicit dependency on GPIO stuff, showing up as the following build failure: drivers/video/bfin-lq035q1-fb.c:369:6: error: 'GPIOF_OUT_INIT_LOW' undeclared Other more global bfin build issues prevent an automated bisect, but it really doesn't matter - simply add in the appropriate header. Cc: Florian Tobias Schandinat Acked-by: Mike Frysinger Signed-off-by: Paul Gortmaker --- drivers/video/bfin-lq035q1-fb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/video/bfin-lq035q1-fb.c b/drivers/video/bfin-lq035q1-fb.c index 86922ac..353c02f 100644 --- a/drivers/video/bfin-lq035q1-fb.c +++ b/drivers/video/bfin-lq035q1-fb.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include -- cgit v1.1 From fa83af7e8f2936732459a2399df87a0b648b454d Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Wed, 18 Apr 2012 23:31:28 -0400 Subject: blackfin: fix ifdef fustercluck in mach-bf538/boards/ezkit.c This file has lots and lots of ifdef, around structure decls and structure usages. The failure issue was that we would build the BF538-EZKIT_defconfig and get: arch/blackfin/mach-bf538/boards/ezkit.c:924:3: error: 'bfin_lq035q1_device' undeclared here (not in a function) even though the same ifdef _appeared_ to enable both the struct declaration and the code that used it. Yet cpp was telling us we didn't have the struct, but we still had the usage of it. However, _appeared_ is the operative word. After marking all the anonymous #endif with their parent #ifdef config options, it was _then_ clear that there was a misplaced #endif that was hiding the struct declaration. The real guts of the patch boils down to this: -#endif +#endif /* CONFIG_MTD_M25P80 */ +#endif /* CONFIG_SPI_BFIN5XX */ [...] -#endif /* spi master and devices */ but since I had to tag the #endif with their respective #ifdef options to find this misplaced SPI endif, it would be silly to then go and delete them all. So they stay. Cc: Sonic Zhang Cc: Bob Liu Acked-by: Mike Frysinger Signed-off-by: Paul Gortmaker --- arch/blackfin/mach-bf538/boards/ezkit.c | 53 ++++++++++++++++----------------- 1 file changed, 26 insertions(+), 27 deletions(-) diff --git a/arch/blackfin/mach-bf538/boards/ezkit.c b/arch/blackfin/mach-bf538/boards/ezkit.c index 1633a6f..85038f54 100644 --- a/arch/blackfin/mach-bf538/boards/ezkit.c +++ b/arch/blackfin/mach-bf538/boards/ezkit.c @@ -38,7 +38,7 @@ static struct platform_device rtc_device = { .name = "rtc-bfin", .id = -1, }; -#endif +#endif /* CONFIG_RTC_DRV_BFIN */ #if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE) #ifdef CONFIG_SERIAL_BFIN_UART0 @@ -100,7 +100,7 @@ static struct platform_device bfin_uart0_device = { .platform_data = &bfin_uart0_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_SERIAL_BFIN_UART0 */ #ifdef CONFIG_SERIAL_BFIN_UART1 static struct resource bfin_uart1_resources[] = { { @@ -148,7 +148,7 @@ static struct platform_device bfin_uart1_device = { .platform_data = &bfin_uart1_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_SERIAL_BFIN_UART1 */ #ifdef CONFIG_SERIAL_BFIN_UART2 static struct resource bfin_uart2_resources[] = { { @@ -196,8 +196,8 @@ static struct platform_device bfin_uart2_device = { .platform_data = &bfin_uart2_peripherals, /* Passed to driver */ }, }; -#endif -#endif +#endif /* CONFIG_SERIAL_BFIN_UART2 */ +#endif /* CONFIG_SERIAL_BFIN */ #if defined(CONFIG_BFIN_SIR) || defined(CONFIG_BFIN_SIR_MODULE) #ifdef CONFIG_BFIN_SIR0 @@ -224,7 +224,7 @@ static struct platform_device bfin_sir0_device = { .num_resources = ARRAY_SIZE(bfin_sir0_resources), .resource = bfin_sir0_resources, }; -#endif +#endif /* CONFIG_BFIN_SIR0 */ #ifdef CONFIG_BFIN_SIR1 static struct resource bfin_sir1_resources[] = { { @@ -249,7 +249,7 @@ static struct platform_device bfin_sir1_device = { .num_resources = ARRAY_SIZE(bfin_sir1_resources), .resource = bfin_sir1_resources, }; -#endif +#endif /* CONFIG_BFIN_SIR1 */ #ifdef CONFIG_BFIN_SIR2 static struct resource bfin_sir2_resources[] = { { @@ -274,8 +274,8 @@ static struct platform_device bfin_sir2_device = { .num_resources = ARRAY_SIZE(bfin_sir2_resources), .resource = bfin_sir2_resources, }; -#endif -#endif +#endif /* CONFIG_BFIN_SIR2 */ +#endif /* CONFIG_BFIN_SIR */ #if defined(CONFIG_SERIAL_BFIN_SPORT) || defined(CONFIG_SERIAL_BFIN_SPORT_MODULE) #ifdef CONFIG_SERIAL_BFIN_SPORT0_UART @@ -311,7 +311,7 @@ static struct platform_device bfin_sport0_uart_device = { .platform_data = &bfin_sport0_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_SERIAL_BFIN_SPORT0_UART */ #ifdef CONFIG_SERIAL_BFIN_SPORT1_UART static struct resource bfin_sport1_uart_resources[] = { { @@ -345,7 +345,7 @@ static struct platform_device bfin_sport1_uart_device = { .platform_data = &bfin_sport1_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_SERIAL_BFIN_SPORT1_UART */ #ifdef CONFIG_SERIAL_BFIN_SPORT2_UART static struct resource bfin_sport2_uart_resources[] = { { @@ -379,7 +379,7 @@ static struct platform_device bfin_sport2_uart_device = { .platform_data = &bfin_sport2_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_SERIAL_BFIN_SPORT2_UART */ #ifdef CONFIG_SERIAL_BFIN_SPORT3_UART static struct resource bfin_sport3_uart_resources[] = { { @@ -413,8 +413,8 @@ static struct platform_device bfin_sport3_uart_device = { .platform_data = &bfin_sport3_peripherals, /* Passed to driver */ }, }; -#endif -#endif +#endif /* CONFIG_SERIAL_BFIN_SPORT3_UART */ +#endif /* CONFIG_SERIAL_BFIN_SPORT */ #if defined(CONFIG_CAN_BFIN) || defined(CONFIG_CAN_BFIN_MODULE) static unsigned short bfin_can_peripherals[] = { @@ -452,7 +452,7 @@ static struct platform_device bfin_can_device = { .platform_data = &bfin_can_peripherals, /* Passed to driver */ }, }; -#endif +#endif /* CONFIG_CAN_BFIN */ /* * USB-LAN EzExtender board @@ -488,7 +488,7 @@ static struct platform_device smc91x_device = { .platform_data = &smc91x_info, }, }; -#endif +#endif /* CONFIG_SMC91X */ #if defined(CONFIG_SPI_BFIN5XX) || defined(CONFIG_SPI_BFIN5XX_MODULE) /* all SPI peripherals info goes here */ @@ -518,7 +518,8 @@ static struct flash_platform_data bfin_spi_flash_data = { static struct bfin5xx_spi_chip spi_flash_chip_info = { .enable_dma = 0, /* use dma transfer with this chip*/ }; -#endif +#endif /* CONFIG_MTD_M25P80 */ +#endif /* CONFIG_SPI_BFIN5XX */ #if defined(CONFIG_TOUCHSCREEN_AD7879) || defined(CONFIG_TOUCHSCREEN_AD7879_MODULE) #include @@ -535,7 +536,7 @@ static const struct ad7879_platform_data bfin_ad7879_ts_info = { .gpio_export = 1, /* Export GPIO to gpiolib */ .gpio_base = -1, /* Dynamic allocation */ }; -#endif +#endif /* CONFIG_TOUCHSCREEN_AD7879 */ #if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE) #include @@ -564,7 +565,7 @@ static struct platform_device bfin_lq035q1_device = { .platform_data = &bfin_lq035q1_data, }, }; -#endif +#endif /* CONFIG_FB_BFIN_LQ035Q1 */ static struct spi_board_info bf538_spi_board_info[] __initdata = { #if defined(CONFIG_MTD_M25P80) \ @@ -579,7 +580,7 @@ static struct spi_board_info bf538_spi_board_info[] __initdata = { .controller_data = &spi_flash_chip_info, .mode = SPI_MODE_3, }, -#endif +#endif /* CONFIG_MTD_M25P80 */ #if defined(CONFIG_TOUCHSCREEN_AD7879_SPI) || defined(CONFIG_TOUCHSCREEN_AD7879_SPI_MODULE) { .modalias = "ad7879", @@ -590,7 +591,7 @@ static struct spi_board_info bf538_spi_board_info[] __initdata = { .chip_select = 1, .mode = SPI_CPHA | SPI_CPOL, }, -#endif +#endif /* CONFIG_TOUCHSCREEN_AD7879_SPI */ #if defined(CONFIG_FB_BFIN_LQ035Q1) || defined(CONFIG_FB_BFIN_LQ035Q1_MODULE) { .modalias = "bfin-lq035q1-spi", @@ -599,7 +600,7 @@ static struct spi_board_info bf538_spi_board_info[] __initdata = { .chip_select = 2, .mode = SPI_CPHA | SPI_CPOL, }, -#endif +#endif /* CONFIG_FB_BFIN_LQ035Q1 */ #if defined(CONFIG_SPI_SPIDEV) || defined(CONFIG_SPI_SPIDEV_MODULE) { .modalias = "spidev", @@ -607,7 +608,7 @@ static struct spi_board_info bf538_spi_board_info[] __initdata = { .bus_num = 0, .chip_select = 1, }, -#endif +#endif /* CONFIG_SPI_SPIDEV */ }; /* SPI (0) */ @@ -716,8 +717,6 @@ static struct platform_device bf538_spi_master2 = { }, }; -#endif /* spi master and devices */ - #if defined(CONFIG_I2C_BLACKFIN_TWI) || defined(CONFIG_I2C_BLACKFIN_TWI_MODULE) static struct resource bfin_twi0_resource[] = { [0] = { @@ -759,8 +758,8 @@ static struct platform_device i2c_bfin_twi1_device = { .num_resources = ARRAY_SIZE(bfin_twi1_resource), .resource = bfin_twi1_resource, }; -#endif -#endif +#endif /* CONFIG_BF542 */ +#endif /* CONFIG_I2C_BLACKFIN_TWI */ #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE) #include -- cgit v1.1 From 89f21cc050d5eed8eeffee5b46297fb7a74ef9dd Mon Sep 17 00:00:00 2001 From: Rupesh Gujare Date: Wed, 25 Apr 2012 23:54:58 +0100 Subject: staging: ozwpan: Fix bug where kfree is called twice. Signed-off-by: Rupesh Gujare Signed-off-by: Chris Kelly Signed-off-by: Greg Kroah-Hartman --- drivers/staging/ozwpan/ozpd.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/staging/ozwpan/ozpd.c b/drivers/staging/ozwpan/ozpd.c index 2b45d3d..04cd57f 100644 --- a/drivers/staging/ozwpan/ozpd.c +++ b/drivers/staging/ozwpan/ozpd.c @@ -383,8 +383,6 @@ static void oz_tx_frame_free(struct oz_pd *pd, struct oz_tx_frame *f) pd->tx_pool = &f->link; pd->tx_pool_count++; f = 0; - } else { - kfree(f); } spin_unlock_bh(&pd->tx_frame_lock); if (f) -- cgit v1.1 From 8b6efb75e9467f7c2df279cbd657f741ec3493cf Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Thu, 26 Apr 2012 10:27:18 +0000 Subject: MAINTAINERS: update sctp maintainer address Update my email address. Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- MAINTAINERS | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index bb76fc4..57bc677 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -5892,11 +5892,11 @@ F: Documentation/scsi/st.txt F: drivers/scsi/st* SCTP PROTOCOL -M: Vlad Yasevich +M: Vlad Yasevich M: Sridhar Samudrala L: linux-sctp@vger.kernel.org W: http://lksctp.sourceforge.net -S: Supported +S: Maintained F: Documentation/networking/sctp.txt F: include/linux/sctp.h F: include/net/sctp/ -- cgit v1.1 From df88b2d96e36d9a9e325bfcd12eb45671cbbc937 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 26 Apr 2012 13:13:21 -0400 Subject: xen/enlighten: Disable MWAIT_LEAF so that acpi-pad won't be loaded. There are exactly four users of __monitor and __mwait: - cstate.c (which allows acpi_processor_ffh_cstate_enter to be called when the cpuidle API drivers are used. However patch "cpuidle: replace xen access to x86 pm_idle and default_idle" provides a mechanism to disable the cpuidle and use safe_halt. - smpboot (which allows mwait_play_dead to be called). However safe_halt is always used so we skip that. - intel_idle (same deal as above). - acpi_pad.c. This the one that we do not want to run as we will hit the below crash. Why do we want to expose MWAIT_LEAF in the first place? We want it for the xen-acpi-processor driver - which uploads C-states to the hypervisor. If MWAIT_LEAF is set, the cstate.c sets the proper address in the C-states so that the hypervisor can benefit from using the MWAIT functionality. And that is the sole reason for using it. Without this patch, if a module performs mwait or monitor we get this: invalid opcode: 0000 [#1] SMP CPU 2 .. snip.. Pid: 5036, comm: insmod Tainted: G O 3.4.0-rc2upstream-dirty #2 Intel Corporation S2600CP/S2600CP RIP: e030:[] [] mwait_check_init+0x17/0x1000 [mwait_check] RSP: e02b:ffff8801c298bf18 EFLAGS: 00010282 RAX: ffff8801c298a010 RBX: ffffffffa03b2000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff8801c29800d8 RDI: ffff8801ff097200 RBP: ffff8801c298bf18 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffffa000a000 R14: 0000005148db7294 R15: 0000000000000003 FS: 00007fbb364f2700(0000) GS:ffff8801ff08c000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000179f038 CR3: 00000001c9469000 CR4: 0000000000002660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process insmod (pid: 5036, threadinfo ffff8801c298a000, task ffff8801c29cd7e0) Stack: ffff8801c298bf48 ffffffff81002124 ffffffffa03b2000 00000000000081fd 000000000178f010 000000000178f030 ffff8801c298bf78 ffffffff810c41e6 00007fff3fb30db9 00007fff3fb30db9 00000000000081fd 0000000000010000 Call Trace: [] do_one_initcall+0x124/0x170 [] sys_init_module+0xc6/0x220 [] system_call_fastpath+0x16/0x1b Code: <0f> 01 c8 31 c0 0f 01 c9 c9 c3 00 00 00 00 00 00 00 00 00 00 00 00 RIP [] mwait_check_init+0x17/0x1000 [mwait_check] RSP ---[ end trace 16582fc8a3d1e29a ]--- Kernel panic - not syncing: Fatal exception With this module (which is what acpi_pad.c would hit): MODULE_AUTHOR("Konrad Rzeszutek Wilk "); MODULE_DESCRIPTION("mwait_check_and_back"); MODULE_LICENSE("GPL"); MODULE_VERSION(); static int __init mwait_check_init(void) { __monitor((void *)¤t_thread_info()->flags, 0, 0); __mwait(0, 0); return 0; } static void __exit mwait_check_exit(void) { } module_init(mwait_check_init); module_exit(mwait_check_exit); Reported-by: Liu, Jinsong Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/enlighten.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 4f51beb..a8f8844 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -261,7 +261,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx, static bool __init xen_check_mwait(void) { -#ifdef CONFIG_ACPI +#if defined(CONFIG_ACPI) && !defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) && \ + !defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) struct xen_platform_op op = { .cmd = XENPF_set_processor_pminfo, .u.set_pminfo.id = -1, @@ -349,7 +350,6 @@ static void __init xen_init_cpuid_mask(void) /* Xen will set CR4.OSXSAVE if supported and not disabled by force */ if ((cx & xsave_mask) != xsave_mask) cpuid_leaf1_ecx_mask &= ~xsave_mask; /* disable XSAVE & OSXSAVE */ - if (xen_check_mwait()) cpuid_leaf1_ecx_set_mask = (1 << (X86_FEATURE_MWAIT % 32)); } -- cgit v1.1 From 521394e4e679996955bc351cb6b64639751db2ff Mon Sep 17 00:00:00 2001 From: Stefano Stabellini Date: Wed, 25 Apr 2012 16:11:38 +0100 Subject: xen: use the pirq number to check the pirq_eoi_map In pirq_check_eoi_map use the pirq number rather than the Linux irq number to check whether an eoi is needed in the pirq_eoi_map. The reason is that the irq number is not always identical to the pirq number so if we wrongly use the irq number to check the pirq_eoi_map we are going to check for the wrong pirq to EOI. As a consequence some interrupts might not be EOI'ed by the guest correctly. Signed-off-by: Stefano Stabellini Tested-by: Tobias Geiger [v1: Added some extra wording to git commit] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/events.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/xen/events.c b/drivers/xen/events.c index 4b33acd..0a8a17c 100644 --- a/drivers/xen/events.c +++ b/drivers/xen/events.c @@ -274,7 +274,7 @@ static unsigned int cpu_from_evtchn(unsigned int evtchn) static bool pirq_check_eoi_map(unsigned irq) { - return test_bit(irq, pirq_eoi_map); + return test_bit(pirq_from_irq(irq), pirq_eoi_map); } static bool pirq_needs_eoi_flag(unsigned irq) -- cgit v1.1 From 8e12a038f88e819c878e5697ff681cb08bcebb08 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Thu, 26 Apr 2012 14:23:22 -0400 Subject: xtensa: fix build fail on undefined ack_bad_irq Commit e520c410854bab763be24e0fce7ba89dc252efee "xtensa: convert to asm-generic/hardirq.h" converted over to using the asm-generic parts, but it also added the sentinel #define ack_bad_irq ack_bad_irq which tells asm-generic to _not_ use the common ack_bad_irq. Since e520c41 deleted the duplicated code from the arch specific file, we _do_ want the asm-generic one in scope. So delete the trigger define above which hides it. In doing so we'll realize that we've got to delete the almost-duplicate prototype as well to avoid "static declaration ... follows non-static". Cc: Christoph Hellwig Cc: Chris Zankel Signed-off-by: Paul Gortmaker --- arch/xtensa/include/asm/hardirq.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/xtensa/include/asm/hardirq.h b/arch/xtensa/include/asm/hardirq.h index 26664ce..91695a1 100644 --- a/arch/xtensa/include/asm/hardirq.h +++ b/arch/xtensa/include/asm/hardirq.h @@ -11,9 +11,6 @@ #ifndef _XTENSA_HARDIRQ_H #define _XTENSA_HARDIRQ_H -void ack_bad_irq(unsigned int irq); -#define ack_bad_irq ack_bad_irq - #include #endif /* _XTENSA_HARDIRQ_H */ -- cgit v1.1 From 8598f3cd80c860173d9b35d91c3dcb93eee13b54 Mon Sep 17 00:00:00 2001 From: Matt Fleming Date: Tue, 14 Feb 2012 11:40:52 +0000 Subject: MIPS: Use set_current_blocked() and block_sigmask() As described in e6fa16ab ("signal: sigprocmask() should do retarget_shared_pending()") the modification of current->blocked is incorrect as we need to check whether the signal we're about to block is pending in the shared queue. Also, use the new helper function introduced in commit 5e6292c0f28f ("signal: add block_sigmask() for adding sigmask to current->blocked") which centralises the code for updating current->blocked after successfully delivering a signal and reduces the amount of duplicate code across architectures. In the past some architectures got this code wrong, so using this helper function should stop that from happening again. Cc: Oleg Nesterov Cc: Andrew Morton Cc: linux-kernel@vger.kernel.org Cc: Al Viro Cc: David Daney Cc: linux-mips@linux-mips.org Signed-off-by: Matt Fleming Patchwork: https://patchwork.linux-mips.org/patch/3363/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/signal.c | 27 +++++---------------------- arch/mips/kernel/signal32.c | 20 ++++---------------- arch/mips/kernel/signal_n32.c | 10 ++-------- 3 files changed, 11 insertions(+), 46 deletions(-) diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index 185ca00..d5a338a 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -257,11 +257,8 @@ asmlinkage int sys_sigsuspend(nabi_no_regargs struct pt_regs regs) return -EFAULT; sigdelsetmask(&newset, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); current->saved_sigmask = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&newset); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -286,11 +283,8 @@ asmlinkage int sys_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) return -EFAULT; sigdelsetmask(&newset, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); current->saved_sigmask = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&newset); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -362,10 +356,7 @@ asmlinkage void sys_sigreturn(nabi_no_regargs struct pt_regs regs) goto badframe; sigdelsetmask(&blocked, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = blocked; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&blocked); sig = restore_sigcontext(®s, &frame->sf_sc); if (sig < 0) @@ -401,10 +392,7 @@ asmlinkage void sys_rt_sigreturn(nabi_no_regargs struct pt_regs regs) goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); sig = restore_sigcontext(®s, &frame->rs_uc.uc_mcontext); if (sig < 0) @@ -580,12 +568,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, if (ret) return ret; - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked, ¤t->blocked, &ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked, sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + block_sigmask(ka, sig); return ret; } diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c index 06b5da3..ac3b8d8 100644 --- a/arch/mips/kernel/signal32.c +++ b/arch/mips/kernel/signal32.c @@ -290,11 +290,8 @@ asmlinkage int sys32_sigsuspend(nabi_no_regargs struct pt_regs regs) return -EFAULT; sigdelsetmask(&newset, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); current->saved_sigmask = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&newset); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -318,11 +315,8 @@ asmlinkage int sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) return -EFAULT; sigdelsetmask(&newset, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); current->saved_sigmask = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&newset); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -488,10 +482,7 @@ asmlinkage void sys32_sigreturn(nabi_no_regargs struct pt_regs regs) goto badframe; sigdelsetmask(&blocked, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = blocked; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&blocked); sig = restore_sigcontext32(®s, &frame->sf_sc); if (sig < 0) @@ -529,10 +520,7 @@ asmlinkage void sys32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); sig = restore_sigcontext32(®s, &frame->rs_uc.uc_mcontext); if (sig < 0) diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c index ae29e89..86eb4b0 100644 --- a/arch/mips/kernel/signal_n32.c +++ b/arch/mips/kernel/signal_n32.c @@ -93,11 +93,8 @@ asmlinkage int sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs) sigset_from_compat(&newset, &uset); sigdelsetmask(&newset, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); current->saved_sigmask = current->blocked; - current->blocked = newset; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&newset); current->state = TASK_INTERRUPTIBLE; schedule(); @@ -121,10 +118,7 @@ asmlinkage void sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs) goto badframe; sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); + set_current_blocked(&set); sig = restore_sigcontext(®s, &frame->rs_uc.uc_mcontext); if (sig < 0) -- cgit v1.1 From 05c8be02a98344148529441b28c0a8ce931dd6a8 Mon Sep 17 00:00:00 2001 From: Antony Pavlov Date: Wed, 7 Mar 2012 12:19:43 +0400 Subject: MIPS: JZ4740: Fix the JZ4740_IRQ_DMA macro Signed-off-by: Antony Pavlov Cc: Lars-Peter Clausen Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3459/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mach-jz4740/irq.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/include/asm/mach-jz4740/irq.h b/arch/mips/include/asm/mach-jz4740/irq.h index a865c98..5ad1a9c 100644 --- a/arch/mips/include/asm/mach-jz4740/irq.h +++ b/arch/mips/include/asm/mach-jz4740/irq.h @@ -45,7 +45,7 @@ #define JZ4740_IRQ_LCD JZ4740_IRQ(30) /* 2nd-level interrupts */ -#define JZ4740_IRQ_DMA(x) (JZ4740_IRQ(32) + (X)) +#define JZ4740_IRQ_DMA(x) (JZ4740_IRQ(32) + (x)) #define JZ4740_IRQ_INTC_GPIO(x) (JZ4740_IRQ_GPIO0 - (x)) #define JZ4740_IRQ_GPIO(x) (JZ4740_IRQ(48) + (x)) -- cgit v1.1 From 5c22837adca7c30b66121cf18ad3e160134268d4 Mon Sep 17 00:00:00 2001 From: Oliver Neukum Date: Thu, 26 Apr 2012 21:59:10 +0200 Subject: USB: cdc-wdm: fix race leading leading to memory corruption MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch fixes a race whereby a pointer to a buffer would be overwritten while the buffer was in use leading to a double free and a memory leak. This causes crashes. This bug was introduced in 2.6.34 Signed-off-by: Oliver Neukum Tested-by: Bjørn Mork Cc: stable Signed-off-by: Greg Kroah-Hartman --- drivers/usb/class/cdc-wdm.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index c6f6560..0bb2b32 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -157,8 +157,9 @@ static void wdm_out_callback(struct urb *urb) spin_lock(&desc->iuspin); desc->werr = urb->status; spin_unlock(&desc->iuspin); - clear_bit(WDM_IN_USE, &desc->flags); kfree(desc->outbuf); + desc->outbuf = NULL; + clear_bit(WDM_IN_USE, &desc->flags); wake_up(&desc->wait); } @@ -338,7 +339,7 @@ static ssize_t wdm_write if (we < 0) return -EIO; - desc->outbuf = buf = kmalloc(count, GFP_KERNEL); + buf = kmalloc(count, GFP_KERNEL); if (!buf) { rv = -ENOMEM; goto outnl; @@ -406,10 +407,12 @@ static ssize_t wdm_write req->wIndex = desc->inum; req->wLength = cpu_to_le16(count); set_bit(WDM_IN_USE, &desc->flags); + desc->outbuf = buf; rv = usb_submit_urb(desc->command, GFP_KERNEL); if (rv < 0) { kfree(buf); + desc->outbuf = NULL; clear_bit(WDM_IN_USE, &desc->flags); dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv); } else { -- cgit v1.1 From ec2ccd884ab1e190bc5ddb210c7d5f5ea2ddeba3 Mon Sep 17 00:00:00 2001 From: Nobuhiro Iwamatsu Date: Fri, 27 Apr 2012 11:12:38 +0930 Subject: sh: Fix up tracepoint build fallout from static key introduction. With the introduction of static keys, anything using tracepoints blows up in the following manner: include/trace/events/oom.h:8:13: error: initializer element is not constant include/trace/events/oom.h:8:13: error: (near initialization for '__tracepoint_oom_score_adj_update') include/trace/events/oom.h:8:13: error: initializer element is not constant include/trace/events/oom.h:8:13: error: (near initialization for '__tracepoint_oom_score_adj_update.key') This is a result of the STATIC_KEY_INIT_xxx defs wrapping ATOMIC_INIT() which on sh includes an atomic_t typecast. Given that we don't really need the typecast for anything anymore, the simplest solution is simply to kill off the cast. Signed-off-by: Nobuhiro Iwamatsu Signed-off-by: Paul Mundt --- arch/sh/include/asm/atomic.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/sh/include/asm/atomic.h b/arch/sh/include/asm/atomic.h index 37f2f4a..f4c1c20 100644 --- a/arch/sh/include/asm/atomic.h +++ b/arch/sh/include/asm/atomic.h @@ -11,7 +11,7 @@ #include #include -#define ATOMIC_INIT(i) ( (atomic_t) { (i) } ) +#define ATOMIC_INIT(i) { (i) } #define atomic_read(v) (*(volatile int *)&(v)->counter) #define atomic_set(v,i) ((v)->counter = (i)) -- cgit v1.1 From cf405ae612b0f7e2358db7ff594c0e94846137aa Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 26 Apr 2012 13:50:03 -0400 Subject: xen/smp: Fix crash when booting with ACPI hotplug CPUs. When we boot on a machine that can hotplug CPUs and we are using 'dom0_max_vcpus=X' on the Xen hypervisor line to clip the amount of CPUs available to the initial domain, we get this: (XEN) Command line: com1=115200,8n1 dom0_mem=8G noreboot dom0_max_vcpus=8 sync_console mce_verbosity=verbose console=com1,vga loglvl=all guest_loglvl=all .. snip.. DMI: Intel Corporation S2600CP/S2600CP, BIOS SE5C600.86B.99.99.x032.072520111118 07/25/2011 .. snip. SMP: Allowing 64 CPUs, 32 hotplug CPUs installing Xen timer for CPU 7 cpu 7 spinlock event irq 361 NMI watchdog: disabled (cpu7): hardware events not enabled Brought up 8 CPUs .. snip.. [acpi processor finds the CPUs are not initialized and starts calling arch_register_cpu, which creates /sys/devices/system/cpu/cpu8/online] CPU 8 got hotplugged CPU 9 got hotplugged CPU 10 got hotplugged .. snip.. initcall 1_acpi_battery_init_async+0x0/0x1b returned 0 after 406 usecs calling erst_init+0x0/0x2bb @ 1 [and the scheduler sticks newly started tasks on the new CPUs, but said CPUs cannot be initialized b/c the hypervisor has limited the amount of vCPUS to 8 - as per the dom0_max_vcpus=8 flag. The spinlock tries to kick the other CPU, but the structure for that is not initialized and we crash.] BUG: unable to handle kernel paging request at fffffffffffffed8 IP: [] xen_spin_lock+0x29/0x60 PGD 180d067 PUD 180e067 PMD 0 Oops: 0002 [#1] SMP CPU 7 Modules linked in: Pid: 1, comm: swapper/0 Not tainted 3.4.0-rc2upstream-00001-gf5154e8 #1 Intel Corporation S2600CP/S2600CP RIP: e030:[] [] xen_spin_lock+0x29/0x60 RSP: e02b:ffff8801fb9b3a70 EFLAGS: 00010282 With this patch, we cap the amount of vCPUS that the initial domain can run, to exactly what dom0_max_vcpus=X has specified. In the future, if there is a hypercall that will allow a running domain to expand past its initial set of vCPUS, this patch should be re-evaluated. CC: stable@kernel.org Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/smp.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c index 5fac691..0503c0c 100644 --- a/arch/x86/xen/smp.c +++ b/arch/x86/xen/smp.c @@ -178,6 +178,7 @@ static void __init xen_fill_possible_map(void) static void __init xen_filter_cpu_maps(void) { int i, rc; + unsigned int subtract = 0; if (!xen_initial_domain()) return; @@ -192,8 +193,22 @@ static void __init xen_filter_cpu_maps(void) } else { set_cpu_possible(i, false); set_cpu_present(i, false); + subtract++; } } +#ifdef CONFIG_HOTPLUG_CPU + /* This is akin to using 'nr_cpus' on the Linux command line. + * Which is OK as when we use 'dom0_max_vcpus=X' we can only + * have up to X, while nr_cpu_ids is greater than X. This + * normally is not a problem, except when CPU hotplugging + * is involved and then there might be more than X CPUs + * in the guest - which will not work as there is no + * hypercall to expand the max number of VCPUs an already + * running guest has. So cap it up to X. */ + if (subtract) + nr_cpu_ids = nr_cpu_ids - subtract; +#endif + } static void __init xen_smp_prepare_boot_cpu(void) -- cgit v1.1 From b930fe5e1f5646e071facda70b25b137ebeae5af Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 26 Apr 2012 14:22:33 -0400 Subject: xen/acpi: Workaround broken BIOSes exporting non-existing C-states. We did a similar check for the P-states but did not do it for the C-states. What we want to do is ignore cases where the DSDT has definition for sixteen CPUs, but the machine only has eight CPUs and we get: xen-acpi-processor: (CX): Hypervisor error (-22) for ACPI CPU14 Reported-by: Tobias Geiger Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/xen-acpi-processor.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/xen/xen-acpi-processor.c b/drivers/xen/xen-acpi-processor.c index 174b565..0b48579 100644 --- a/drivers/xen/xen-acpi-processor.c +++ b/drivers/xen/xen-acpi-processor.c @@ -128,7 +128,10 @@ static int push_cxx_to_hypervisor(struct acpi_processor *_pr) pr_debug(" C%d: %s %d uS\n", cx->type, cx->desc, (u32)cx->latency); } - } else + } else if (ret != -EINVAL) + /* EINVAL means the ACPI ID is incorrect - meaning the ACPI + * table is referencing a non-existing CPU - which can happen + * with broken ACPI tables. */ pr_err(DRV_NAME "(CX): Hypervisor error (%d) for ACPI CPU%u\n", ret, _pr->acpi_id); -- cgit v1.1 From b95ace54a23e2f8ebb032744cebb17c9f43bf651 Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Sun, 22 Apr 2012 13:37:24 +0200 Subject: ARM: pxa: fix gpio wakeup setting In 3.3, gpio wakeup setting was broken. The call enable_irq_wake() didn't set up the PXA gpio registers (PWER, ...) anymore. Fix it at least for pxa27x. The driver doesn't seem to be used in pxa25x (weird ...), and the fix doesn't extend to pxa3xx and pxa95x (which don't have a gpio_set_wake() available). Signed-off-by: Robert Jarzmik Signed-off-by: Haojian Zhuang --- arch/arm/mach-pxa/pxa27x.c | 6 +++++- drivers/gpio/gpio-pxa.c | 21 +++++++++++++++++++-- include/linux/gpio-pxa.h | 4 ++++ 3 files changed, 28 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index 6bce78e..4726c24 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -421,8 +421,11 @@ void __init pxa27x_set_i2c_power_info(struct i2c_pxa_platform_data *info) pxa_register_device(&pxa27x_device_i2c_power, info); } +static struct pxa_gpio_platform_data pxa27x_gpio_info __initdata = { + .gpio_set_wake = gpio_set_wake, +}; + static struct platform_device *devices[] __initdata = { - &pxa_device_gpio, &pxa27x_device_udc, &pxa_device_pmu, &pxa_device_i2s, @@ -458,6 +461,7 @@ static int __init pxa27x_init(void) register_syscore_ops(&pxa2xx_mfp_syscore_ops); register_syscore_ops(&pxa2xx_clock_syscore_ops); + pxa_register_device(&pxa_device_gpio, &pxa27x_gpio_info); ret = platform_add_devices(devices, ARRAY_SIZE(devices)); } diff --git a/drivers/gpio/gpio-pxa.c b/drivers/gpio/gpio-pxa.c index 5689ce6..fc3ace3 100644 --- a/drivers/gpio/gpio-pxa.c +++ b/drivers/gpio/gpio-pxa.c @@ -64,6 +64,7 @@ struct pxa_gpio_chip { unsigned long irq_mask; unsigned long irq_edge_rise; unsigned long irq_edge_fall; + int (*set_wake)(unsigned int gpio, unsigned int on); #ifdef CONFIG_PM unsigned long saved_gplr; @@ -269,7 +270,8 @@ static void pxa_gpio_set(struct gpio_chip *chip, unsigned offset, int value) (value ? GPSR_OFFSET : GPCR_OFFSET)); } -static int __devinit pxa_init_gpio_chip(int gpio_end) +static int __devinit pxa_init_gpio_chip(int gpio_end, + int (*set_wake)(unsigned int, unsigned int)) { int i, gpio, nbanks = gpio_to_bank(gpio_end) + 1; struct pxa_gpio_chip *chips; @@ -285,6 +287,7 @@ static int __devinit pxa_init_gpio_chip(int gpio_end) sprintf(chips[i].label, "gpio-%d", i); chips[i].regbase = gpio_reg_base + BANK_OFF(i); + chips[i].set_wake = set_wake; c->base = gpio; c->label = chips[i].label; @@ -412,6 +415,17 @@ static void pxa_mask_muxed_gpio(struct irq_data *d) writel_relaxed(gfer, c->regbase + GFER_OFFSET); } +static int pxa_gpio_set_wake(struct irq_data *d, unsigned int on) +{ + int gpio = pxa_irq_to_gpio(d->irq); + struct pxa_gpio_chip *c = gpio_to_pxachip(gpio); + + if (c->set_wake) + return c->set_wake(gpio, on); + else + return 0; +} + static void pxa_unmask_muxed_gpio(struct irq_data *d) { int gpio = pxa_irq_to_gpio(d->irq); @@ -427,6 +441,7 @@ static struct irq_chip pxa_muxed_gpio_chip = { .irq_mask = pxa_mask_muxed_gpio, .irq_unmask = pxa_unmask_muxed_gpio, .irq_set_type = pxa_gpio_irq_type, + .irq_set_wake = pxa_gpio_set_wake, }; static int pxa_gpio_nums(void) @@ -471,6 +486,7 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev) struct pxa_gpio_chip *c; struct resource *res; struct clk *clk; + struct pxa_gpio_platform_data *info; int gpio, irq, ret; int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0; @@ -516,7 +532,8 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev) } /* Initialize GPIO chips */ - pxa_init_gpio_chip(pxa_last_gpio); + info = dev_get_platdata(&pdev->dev); + pxa_init_gpio_chip(pxa_last_gpio, info ? info->gpio_set_wake : NULL); /* clear all GPIO edge detects */ for_each_gpio_chip(gpio, c) { diff --git a/include/linux/gpio-pxa.h b/include/linux/gpio-pxa.h index 05071ee..d755b28 100644 --- a/include/linux/gpio-pxa.h +++ b/include/linux/gpio-pxa.h @@ -13,4 +13,8 @@ extern int pxa_last_gpio; extern int pxa_irq_to_gpio(int irq); +struct pxa_gpio_platform_data { + int (*gpio_set_wake)(unsigned int gpio, unsigned int on); +}; + #endif /* __GPIO_PXA_H */ -- cgit v1.1 From 9f9d27e3f3317f39c91c286b6184f1ca05452968 Mon Sep 17 00:00:00 2001 From: Dmitry Artamonow Date: Sat, 14 Apr 2012 10:26:19 +0400 Subject: arm/sa1100: fix sa1100-rtc memory resource DEFINE_RES_MEM() takes the size of resource as a second argument, not the end address. Passing end address leads to following error in runtime during device registration: sa1100-rtc: failed to claim resource 0 Fix it. Signed-off-by: Dmitry Artamonow Signed-off-by: Haojian Zhuang --- arch/arm/mach-sa1100/generic.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 7c524b4..16be4c5 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -306,7 +306,7 @@ void sa11x0_register_irda(struct irda_platform_data *irda) } static struct resource sa1100_rtc_resources[] = { - DEFINE_RES_MEM(0x90010000, 0x9001003f), + DEFINE_RES_MEM(0x90010000, 0x40), DEFINE_RES_IRQ_NAMED(IRQ_RTC1Hz, "rtc 1Hz"), DEFINE_RES_IRQ_NAMED(IRQ_RTCAlrm, "rtc alarm"), }; -- cgit v1.1 From a13b878780ea98d8415203c4502a8fc5bc614656 Mon Sep 17 00:00:00 2001 From: Igor Grinberg Date: Thu, 12 Apr 2012 15:43:28 +0300 Subject: ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT Pins that have MFP_LPM_KEEP_OUTPUT set and are configured for output must retain the output state in low power mode. Currently, the pin direction configuration is overrided with values in gpdr_lpm[] array and do not obey the MFP_LPM_KEEP_OUTPUT setting. Fix the above bug and add some documentation to clarify the MFP_LPM_KEEP_OUTPUT setting purpose. Reported-by: Paul Parsons Signed-off-by: Igor Grinberg Tested-by: Paul Parsons Signed-off-by: Haojian Zhuang --- arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h | 7 +++++++ arch/arm/mach-pxa/mfp-pxa2xx.c | 12 ++++++++++-- 2 files changed, 17 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h b/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h index c54cef2..cbf51ae 100644 --- a/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h +++ b/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h @@ -17,6 +17,7 @@ * * bit 23 - Input/Output (PXA2xx specific) * bit 24 - Wakeup Enable(PXA2xx specific) + * bit 25 - Keep Output (PXA2xx specific) */ #define MFP_DIR_IN (0x0 << 23) @@ -25,6 +26,12 @@ #define MFP_DIR(x) (((x) >> 23) & 0x1) #define MFP_LPM_CAN_WAKEUP (0x1 << 24) + +/* + * MFP_LPM_KEEP_OUTPUT must be specified for pins that need to + * retain their last output level (low or high). + * Note: MFP_LPM_KEEP_OUTPUT has no effect on pins configured for input. + */ #define MFP_LPM_KEEP_OUTPUT (0x1 << 25) #define WAKEUP_ON_EDGE_RISE (MFP_LPM_CAN_WAKEUP | MFP_LPM_EDGE_RISE) diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index b0a8428..d2373d7 100644 --- a/arch/arm/mach-pxa/mfp-pxa2xx.c +++ b/arch/arm/mach-pxa/mfp-pxa2xx.c @@ -366,14 +366,22 @@ static int pxa2xx_mfp_suspend(void) } for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) { - saved_gafr[0][i] = GAFR_L(i); saved_gafr[1][i] = GAFR_U(i); saved_gpdr[i] = GPDR(i * 32); saved_pgsr[i] = PGSR(i); + } - GPDR(i * 32) = gpdr_lpm[i]; + /* set GPDR bits taking into account MFP_LPM_KEEP_OUTPUT */ + for (i = 0; i < pxa_last_gpio; i++) { + if ((gpdr_lpm[gpio_to_bank(i)] & GPIO_bit(i)) || + ((gpio_desc[i].config & MFP_LPM_KEEP_OUTPUT) && + (saved_gpdr[gpio_to_bank(i)] & GPIO_bit(i)))) + GPDR(i) |= GPIO_bit(i); + else + GPDR(i) &= ~GPIO_bit(i); } + return 0; } -- cgit v1.1 From ef7c7c693b4b05a293678fd40ed1511bc94d6f61 Mon Sep 17 00:00:00 2001 From: Igor Grinberg Date: Thu, 12 Apr 2012 15:43:29 +0300 Subject: ARM: PXA2xx: MFP: fix potential direction bug Pins configured as input and have MFP_LPM_DRIVE_* flag set, can have a wrong output value for some period of time (spike) during the suspend sequence. This can happen because the direction of the pins (GPDR) is set by software and the output level is set by hardware (PGSR) at a later stage. Fix the above potential bug by setting the output levels first. Also save the actual levels of the pins before the suspend and restore them after the resume, but before the direction settings take place, so the same bug as described above will not happen in the resume sequence. Reported-by: Paul Parsons Signed-off-by: Igor Grinberg Tested-by: Paul Parsons Signed-off-by: Haojian Zhuang --- arch/arm/mach-pxa/mfp-pxa2xx.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm/mach-pxa/mfp-pxa2xx.c b/arch/arm/mach-pxa/mfp-pxa2xx.c index d2373d7..ef0426a 100644 --- a/arch/arm/mach-pxa/mfp-pxa2xx.c +++ b/arch/arm/mach-pxa/mfp-pxa2xx.c @@ -33,6 +33,8 @@ #define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2)) #define GPLR(x) __REG2(0x40E00000, BANK_OFF((x) >> 5)) #define GPDR(x) __REG2(0x40E00000, BANK_OFF((x) >> 5) + 0x0c) +#define GPSR(x) __REG2(0x40E00000, BANK_OFF((x) >> 5) + 0x18) +#define GPCR(x) __REG2(0x40E00000, BANK_OFF((x) >> 5) + 0x24) #define PWER_WE35 (1 << 24) @@ -348,6 +350,7 @@ static inline void pxa27x_mfp_init(void) {} #ifdef CONFIG_PM static unsigned long saved_gafr[2][4]; static unsigned long saved_gpdr[4]; +static unsigned long saved_gplr[4]; static unsigned long saved_pgsr[4]; static int pxa2xx_mfp_suspend(void) @@ -369,7 +372,11 @@ static int pxa2xx_mfp_suspend(void) saved_gafr[0][i] = GAFR_L(i); saved_gafr[1][i] = GAFR_U(i); saved_gpdr[i] = GPDR(i * 32); + saved_gplr[i] = GPLR(i * 32); saved_pgsr[i] = PGSR(i); + + GPSR(i * 32) = PGSR(i); + GPCR(i * 32) = ~PGSR(i); } /* set GPDR bits taking into account MFP_LPM_KEEP_OUTPUT */ @@ -392,6 +399,8 @@ static void pxa2xx_mfp_resume(void) for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) { GAFR_L(i) = saved_gafr[0][i]; GAFR_U(i) = saved_gafr[1][i]; + GPSR(i * 32) = saved_gplr[i]; + GPCR(i * 32) = ~saved_gplr[i]; GPDR(i * 32) = saved_gpdr[i]; PGSR(i) = saved_pgsr[i]; } -- cgit v1.1 From df391c0df49560c7fceffbad5b9d083836d9f22f Mon Sep 17 00:00:00 2001 From: Ilija Hadzic Date: Thu, 19 Apr 2012 12:22:20 -0400 Subject: drm/radeon: add a missing entry to encoder_names An entry for INTERNAL_VCE encoder was missing. Add it. Signed-off-by: Ilija Hadzic Reviewed-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_display.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c index 8086c96..0a1d4bd 100644 --- a/drivers/gpu/drm/radeon/radeon_display.c +++ b/drivers/gpu/drm/radeon/radeon_display.c @@ -533,7 +533,7 @@ static void radeon_crtc_init(struct drm_device *dev, int index) radeon_legacy_init_crtc(dev, radeon_crtc); } -static const char *encoder_names[36] = { +static const char *encoder_names[37] = { "NONE", "INTERNAL_LVDS", "INTERNAL_TMDS1", @@ -570,6 +570,7 @@ static const char *encoder_names[36] = { "INTERNAL_UNIPHY2", "NUTMEG", "TRAVIS", + "INTERNAL_VCE" }; static const char *connector_names[15] = { -- cgit v1.1 From 37d4174d2d252c37dcb3d88cafae488542087848 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 19 Apr 2012 10:48:38 -0400 Subject: drm/radeon/kms: use frac fb div on APUs Seems to be more stable on certain monitors. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=48880 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/atombios_crtc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index b5ff1f7..c5c31e0 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -575,6 +575,9 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc, if (rdev->family < CHIP_RV770) pll->flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP; + /* use frac fb div on APUs */ + if (ASIC_IS_DCE41(rdev) || ASIC_IS_DCE61(rdev)) + pll->flags |= RADEON_PLL_USE_FRAC_FB_DIV; } else { pll->flags |= RADEON_PLL_LEGACY; -- cgit v1.1 From 83a787a71e034244a9fd1d5988fe18f226341417 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Fri, 27 Apr 2012 11:02:15 +0300 Subject: usb: gadget: udc-core: fix wrong call order commit 6d258a4 (usb: gadget: udc-core: stop UDC on device-initiated disconnect) introduced another case of asymmetric calls when issuing a device-initiated disconnect. Fix it. Reported-by: Ben Hutchings Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 2fa9865..df1bd87 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -415,9 +415,9 @@ static ssize_t usb_udc_softconn_store(struct device *dev, usb_gadget_udc_start(udc->gadget, udc->driver); usb_gadget_connect(udc->gadget); } else if (sysfs_streq(buf, "disconnect")) { + usb_gadget_disconnect(udc->gadget); if (udc_is_newstyle(udc)) usb_gadget_udc_stop(udc->gadget, udc->driver); - usb_gadget_disconnect(udc->gadget); } else { dev_err(dev, "unsupported command '%s'\n", buf); return -EINVAL; -- cgit v1.1 From 320cd1e750f1bf3e47eb41209dcb2be07264cb76 Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Thu, 26 Apr 2012 11:31:57 -0400 Subject: usb: gadget: udc-core: fix incompatibility with dummy-hcd This patch (as1548) fixes a recently-introduced incompatibility between the UDC core and the dummy-hcd driver. Commit 8ae8090c82eb407267001f75b3d256b3bd4ae691 (usb: gadget: udc-core: fix asymmetric calls in remove_driver) moved the usb_gadget_udc_stop() call in usb_gadget_remove_driver() below the usb_gadget_disconnect() call. As a result, usb_gadget_disconnect() gets called at a time when the gadget driver believes it has been unbound but dummy-hcd believes it has not. A nasty error ensues when dummy-hcd calls the gadget driver's disconnect method a second time. To fix the problem, this patch moves the gadget driver's unbind notification after the usb_gadget_disconnect() call. Now nothing happens between the two unbind notifications, so nothing goes wrong. Signed-off-by: Alan Stern Tested-by: Alexander Shishkin Signed-off-by: Felipe Balbi --- drivers/usb/gadget/udc-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index df1bd87..e5e44f8 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -263,8 +263,8 @@ static void usb_gadget_remove_driver(struct usb_udc *udc) if (udc_is_newstyle(udc)) { udc->driver->disconnect(udc->gadget); - udc->driver->unbind(udc->gadget); usb_gadget_disconnect(udc->gadget); + udc->driver->unbind(udc->gadget); usb_gadget_udc_stop(udc->gadget, udc->driver); } else { usb_gadget_stop(udc->gadget, udc->driver); -- cgit v1.1 From 1e4f0b82577e59f23484c99056c96465e202fdd5 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Wed, 25 Apr 2012 13:39:38 +0200 Subject: i2c: mxs: disable QUEUE when sending is done Since the last fixes to this driver ensure now the queue termination is done correctly, we can finally disable the queue after a transfer without problems. The gain is that it will only be reenabled after the next transfer is fully set up. Before, the queue was running all the time and if the setup of the next message was interrupted by another thread, an incomplete buffer could have been sent, padded with zeroes. Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-mxs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-mxs.c b/drivers/i2c/busses/i2c-mxs.c index 4c37347..76b8af4 100644 --- a/drivers/i2c/busses/i2c-mxs.c +++ b/drivers/i2c/busses/i2c-mxs.c @@ -253,6 +253,9 @@ static int mxs_i2c_xfer_msg(struct i2c_adapter *adap, struct i2c_msg *msg, if (i2c->cmd_err == -ENXIO) mxs_i2c_reset(i2c); + else + writel(MXS_I2C_QUEUECTRL_QUEUE_RUN, + i2c->regs + MXS_I2C_QUEUECTRL_CLR); dev_dbg(i2c->dev, "Done with err=%d\n", i2c->cmd_err); @@ -383,8 +386,6 @@ static int __devexit mxs_i2c_remove(struct platform_device *pdev) if (ret) return -EBUSY; - writel(MXS_I2C_QUEUECTRL_QUEUE_RUN, - i2c->regs + MXS_I2C_QUEUECTRL_CLR); writel(MXS_I2C_CTRL0_SFTRST, i2c->regs + MXS_I2C_CTRL0_SET); platform_set_drvdata(pdev, NULL); -- cgit v1.1 From de14ca6ae2c592d66db88f1e5596b26f7f011384 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Wed, 14 Mar 2012 10:28:35 +0100 Subject: MIPS: ath79: fix AR933X WMAC reset code The current code puts the built-in WMAC device of the AR933X SoCs into reset instead of starting it. This causes a hard lock on AR933X based boards when the wireless driver tries to access the device. Signed-off-by: Gabor Juhos Cc: stable@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3484/ Signed-off-by: Ralf Baechle --- arch/mips/ath79/dev-wmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/mips/ath79/dev-wmac.c b/arch/mips/ath79/dev-wmac.c index e215070..9c717bf 100644 --- a/arch/mips/ath79/dev-wmac.c +++ b/arch/mips/ath79/dev-wmac.c @@ -58,8 +58,8 @@ static void __init ar913x_wmac_setup(void) static int ar933x_wmac_reset(void) { - ath79_device_reset_clear(AR933X_RESET_WMAC); ath79_device_reset_set(AR933X_RESET_WMAC); + ath79_device_reset_clear(AR933X_RESET_WMAC); return 0; } -- cgit v1.1 From f7f286a910221ae18b21c18d9d0f4cd88965829f Mon Sep 17 00:00:00 2001 From: Andreas Herrmann Date: Tue, 3 Apr 2012 12:13:07 +0200 Subject: x86/amd: Re-enable CPU topology extensions in case BIOS has disabled it BIOS will switch off the corresponding feature flag on family 15h models 10h-1fh non-desktop CPUs. The topology extension CPUID leafs are required to detect which cores belong to the same compute unit. (thread siblings mask is set accordingly and also correct information about L1i and L2 cache sharing depends on this). W/o this patch we wouldn't see which cores belong to the same compute unit and also cache sharing information for L1i and L2 would be incorrect on such systems. Signed-off-by: Andreas Herrmann Signed-off-by: Ingo Molnar --- arch/x86/kernel/cpu/amd.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index 1c67ca1..146bb62 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -580,6 +580,24 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) } } + /* re-enable TopologyExtensions if switched off by BIOS */ + if ((c->x86 == 0x15) && + (c->x86_model >= 0x10) && (c->x86_model <= 0x1f) && + !cpu_has(c, X86_FEATURE_TOPOEXT)) { + u64 val; + + if (!rdmsrl_amd_safe(0xc0011005, &val)) { + val |= 1ULL << 54; + wrmsrl_amd_safe(0xc0011005, val); + rdmsrl(0xc0011005, val); + if (val & (1ULL << 54)) { + set_cpu_cap(c, X86_FEATURE_TOPOEXT); + printk(KERN_INFO FW_INFO "CPU: Re-enabling " + "disabled Topology Extensions Support\n"); + } + } + } + cpu_detect_cache_sizes(c); /* Multi core CPU? */ -- cgit v1.1 From dc5efaa049cbb10efaf47fe977d45ea1e38b4465 Mon Sep 17 00:00:00 2001 From: David Daney Date: Wed, 28 Mar 2012 15:59:58 -0700 Subject: MIPS: Remove get_current_pgd(). It is unused in the tree. Signed-off-by: David Daney Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3557/ Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mmu_context.h | 6 ------ 1 file changed, 6 deletions(-) diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index 73c0d45..9b02cfb 100644 --- a/arch/mips/include/asm/mmu_context.h +++ b/arch/mips/include/asm/mmu_context.h @@ -37,12 +37,6 @@ extern void tlbmiss_handler_setup_pgd(unsigned long pgd); write_c0_xcontext((unsigned long) smp_processor_id() << 51); \ } while (0) - -static inline unsigned long get_current_pgd(void) -{ - return PHYS_TO_XKSEG_CACHED((read_c0_context() >> 11) & ~0xfffUL); -} - #else /* CONFIG_MIPS_PGD_C0_CONTEXT: using pgd_current*/ /* -- cgit v1.1 From 651913ce9de2bbcedef608c5d6cf39c244248509 Mon Sep 17 00:00:00 2001 From: Neal Cardwell Date: Fri, 27 Apr 2012 11:29:37 -0400 Subject: tcp: clean up use of jiffies in tcp_rcv_rtt_measure() Clean up a reference to jiffies in tcp_rcv_rtt_measure() that should instead reference tcp_time_stamp. Since the result of the subtraction is passed into a function taking u32, this should not change any behavior (and indeed the generated assembly does not change on x86_64). However, it seems worth cleaning this up for consistency and clarity (and perhaps to avoid bugs if this is copied and pasted somewhere else). Signed-off-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 3ff36406..2a702e3 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -495,7 +495,7 @@ static inline void tcp_rcv_rtt_measure(struct tcp_sock *tp) goto new_measure; if (before(tp->rcv_nxt, tp->rcv_rtt_est.seq)) return; - tcp_rcv_rtt_update(tp, jiffies - tp->rcv_rtt_est.time, 1); + tcp_rcv_rtt_update(tp, tcp_time_stamp - tp->rcv_rtt_est.time, 1); new_measure: tp->rcv_rtt_est.seq = tp->rcv_nxt + tp->rcv_wnd; -- cgit v1.1 From 5eb806a3a68920a9f373f18b03fa14852047e62b Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 19 Apr 2012 14:44:21 +0530 Subject: spi/pl022: Fix calculate_effective_freq() calculate_effective_freq() was still not optimized and there were cases when it returned without error and with values of cpsr and scr as zero. Also, the variable named found is not used well. This patch targets to optimize and correct this routine. Tested for SPEAr. Signed-off-by: Viresh Kumar Tested-by: Vinit Kamalaksha Shenoy Acked-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/spi/spi-pl022.c | 23 +++++++++++++++++------ 1 file changed, 17 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 1ead49d..8aa44e7 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1681,26 +1681,37 @@ static int calculate_effective_freq(struct pl022 *pl022, int freq, struct while (scr <= SCR_MAX) { tmp = spi_rate(rate, cpsdvsr, scr); - if (tmp > freq) + if (tmp > freq) { + /* we need lower freq */ scr++; + continue; + } + /* - * If found exact value, update and break. - * If found more closer value, update and continue. + * If found exact value, mark found and break. + * If found more closer value, update and break. */ - else if ((tmp == freq) || (tmp > best_freq)) { + if (tmp > best_freq) { best_freq = tmp; best_cpsdvsr = cpsdvsr; best_scr = scr; if (tmp == freq) - break; + found = 1; } - scr++; + /* + * increased scr will give lower rates, which are not + * required + */ + break; } cpsdvsr += 2; scr = SCR_MIN; } + WARN(!best_freq, "pl022: Matching cpsdvsr and scr not found for %d Hz rate \n", + freq); + clk_freq->cpsdvsr = (u8) (best_cpsdvsr & 0xFF); clk_freq->scr = (u8) (best_scr & 0xFF); dev_dbg(&pl022->adev->dev, -- cgit v1.1 From dbabe0d659d3cfe42830a779909ab3cd42f7b027 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Tue, 17 Apr 2012 17:03:50 -0700 Subject: spi: fix spi.h kernel-doc warning Fix kernel-doc warning in spi.h (copy/paste): Warning(include/linux/spi/spi.h:365): No description found for parameter 'unprepare_transfer_hardware' Signed-off-by: Randy Dunlap Signed-off-by: Grant Likely --- include/linux/spi/spi.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 98679b0..fa702ae 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -254,7 +254,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * driver is finished with this message, it must call * spi_finalize_current_message() so the subsystem can issue the next * transfer - * @prepare_transfer_hardware: there are currently no more messages on the + * @unprepare_transfer_hardware: there are currently no more messages on the * queue so the subsystem notifies the driver that it may relax the * hardware by issuing this call * -- cgit v1.1 From d4b9b578cba7231c1fbafbe901a2e8f38654e056 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 17 Apr 2012 18:46:36 -0700 Subject: spi/spi-ep93xx.c: use dma_transfer_direction instead of dma_data_direction A new enum indicating the dma channel direction was introduced by: commit 49920bc66984a512f4bcc7735a61642cd0e4d6f2 dmaengine: add new enum dma_transfer_direction The following commit changed spi-ep93xx to use the new enum: commit a485df4b4404379786c4bdd258bc528b2617449d spi, serial: move to dma_transfer_direction In doing so a sparse warning was introduced: warning: mixing different enum types int enum dma_data_direction versus int enum dma_transfer_direction This is produced because the 'dir' passed in ep93xx_spi_dma_prepare is an enum dma_data_direction and is being used to set the dma_slave_config 'direction' which is now an enum dma_transfer_direction. Fix this by converting spi-ep93xx to use the new enum type in all places. Signed-off-by: H Hartley Sweeten Acked-by: Mika Westerberg Acked-by: Vinod Koul Signed-off-by: Grant Likely --- drivers/spi/spi-ep93xx.c | 24 ++++++++++-------------- 1 file changed, 10 insertions(+), 14 deletions(-) diff --git a/drivers/spi/spi-ep93xx.c b/drivers/spi/spi-ep93xx.c index 6db2887..e805507 100644 --- a/drivers/spi/spi-ep93xx.c +++ b/drivers/spi/spi-ep93xx.c @@ -545,13 +545,12 @@ static void ep93xx_spi_pio_transfer(struct ep93xx_spi *espi) * in case of failure. */ static struct dma_async_tx_descriptor * -ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) +ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_transfer_direction dir) { struct spi_transfer *t = espi->current_msg->state; struct dma_async_tx_descriptor *txd; enum dma_slave_buswidth buswidth; struct dma_slave_config conf; - enum dma_transfer_direction slave_dirn; struct scatterlist *sg; struct sg_table *sgt; struct dma_chan *chan; @@ -567,14 +566,13 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) memset(&conf, 0, sizeof(conf)); conf.direction = dir; - if (dir == DMA_FROM_DEVICE) { + if (dir == DMA_DEV_TO_MEM) { chan = espi->dma_rx; buf = t->rx_buf; sgt = &espi->rx_sgt; conf.src_addr = espi->sspdr_phys; conf.src_addr_width = buswidth; - slave_dirn = DMA_DEV_TO_MEM; } else { chan = espi->dma_tx; buf = t->tx_buf; @@ -582,7 +580,6 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) conf.dst_addr = espi->sspdr_phys; conf.dst_addr_width = buswidth; - slave_dirn = DMA_MEM_TO_DEV; } ret = dmaengine_slave_config(chan, &conf); @@ -633,8 +630,7 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) if (!nents) return ERR_PTR(-ENOMEM); - txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, - slave_dirn, DMA_CTRL_ACK); + txd = dmaengine_prep_slave_sg(chan, sgt->sgl, nents, dir, DMA_CTRL_ACK); if (!txd) { dma_unmap_sg(chan->device->dev, sgt->sgl, sgt->nents, dir); return ERR_PTR(-ENOMEM); @@ -651,12 +647,12 @@ ep93xx_spi_dma_prepare(struct ep93xx_spi *espi, enum dma_data_direction dir) * unmapped. */ static void ep93xx_spi_dma_finish(struct ep93xx_spi *espi, - enum dma_data_direction dir) + enum dma_transfer_direction dir) { struct dma_chan *chan; struct sg_table *sgt; - if (dir == DMA_FROM_DEVICE) { + if (dir == DMA_DEV_TO_MEM) { chan = espi->dma_rx; sgt = &espi->rx_sgt; } else { @@ -677,16 +673,16 @@ static void ep93xx_spi_dma_transfer(struct ep93xx_spi *espi) struct spi_message *msg = espi->current_msg; struct dma_async_tx_descriptor *rxd, *txd; - rxd = ep93xx_spi_dma_prepare(espi, DMA_FROM_DEVICE); + rxd = ep93xx_spi_dma_prepare(espi, DMA_DEV_TO_MEM); if (IS_ERR(rxd)) { dev_err(&espi->pdev->dev, "DMA RX failed: %ld\n", PTR_ERR(rxd)); msg->status = PTR_ERR(rxd); return; } - txd = ep93xx_spi_dma_prepare(espi, DMA_TO_DEVICE); + txd = ep93xx_spi_dma_prepare(espi, DMA_MEM_TO_DEV); if (IS_ERR(txd)) { - ep93xx_spi_dma_finish(espi, DMA_FROM_DEVICE); + ep93xx_spi_dma_finish(espi, DMA_DEV_TO_MEM); dev_err(&espi->pdev->dev, "DMA TX failed: %ld\n", PTR_ERR(rxd)); msg->status = PTR_ERR(txd); return; @@ -705,8 +701,8 @@ static void ep93xx_spi_dma_transfer(struct ep93xx_spi *espi) wait_for_completion(&espi->wait); - ep93xx_spi_dma_finish(espi, DMA_TO_DEVICE); - ep93xx_spi_dma_finish(espi, DMA_FROM_DEVICE); + ep93xx_spi_dma_finish(espi, DMA_MEM_TO_DEV); + ep93xx_spi_dma_finish(espi, DMA_DEV_TO_MEM); } /** -- cgit v1.1 From 5a00689930ab975fdd1b37b034475017e460cf2a Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 17 Apr 2012 14:35:39 +0100 Subject: Avoid reading past buffer when calling GETACL Bug noticed in commit bf118a342f10dafe44b14451a1392c3254629a1f When calling GETACL, if the size of the bitmap array, the length attribute and the acl returned by the server is greater than the allocated buffer(args.acl_len), we can Oops with a General Protection fault at _copy_from_pages() when we attempt to read past the pages allocated. This patch allocates an extra PAGE for the bitmap and checks to see that the bitmap + attribute_length + ACLs don't exceed the buffer space allocated to it. Signed-off-by: Sachin Prabhu Reported-by: Jian Li [Trond: Fixed a size_t vs unsigned int printk() warning] Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 16 ++++++++++------ fs/nfs/nfs4xdr.c | 18 +++++++++++------- 2 files changed, 21 insertions(+), 13 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 60d5f4c..f5f125f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3684,19 +3684,23 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu if (npages == 0) npages = 1; + /* Add an extra page to handle the bitmap returned */ + npages++; + for (i = 0; i < npages; i++) { pages[i] = alloc_page(GFP_KERNEL); if (!pages[i]) goto out_free; } - if (npages > 1) { - /* for decoding across pages */ - res.acl_scratch = alloc_page(GFP_KERNEL); - if (!res.acl_scratch) - goto out_free; - } + + /* for decoding across pages */ + res.acl_scratch = alloc_page(GFP_KERNEL); + if (!res.acl_scratch) + goto out_free; + args.acl_len = npages * PAGE_SIZE; args.acl_pgbase = 0; + /* Let decode_getfacl know not to fail if the ACL data is larger than * the page we send as a guess */ if (buf == NULL) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 77fc5f9..9312dd7 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4902,11 +4902,19 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, bitmap[3] = {0}; struct kvec *iov = req->rq_rcv_buf.head; int status; + size_t page_len = xdr->buf->page_len; res->acl_len = 0; if ((status = decode_op_hdr(xdr, OP_GETATTR)) != 0) goto out; + bm_p = xdr->p; + res->acl_data_offset = be32_to_cpup(bm_p) + 2; + res->acl_data_offset <<= 2; + /* Check if the acl data starts beyond the allocated buffer */ + if (res->acl_data_offset > page_len) + return -ERANGE; + if ((status = decode_attr_bitmap(xdr, bitmap)) != 0) goto out; if ((status = decode_attr_length(xdr, &attrlen, &savep)) != 0) @@ -4916,28 +4924,24 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, return -EIO; if (likely(bitmap[0] & FATTR4_WORD0_ACL)) { size_t hdrlen; - u32 recvd; /* The bitmap (xdr len + bitmaps) and the attr xdr len words * are stored with the acl data to handle the problem of * variable length bitmaps.*/ xdr->p = bm_p; - res->acl_data_offset = be32_to_cpup(bm_p) + 2; - res->acl_data_offset <<= 2; /* We ignore &savep and don't do consistency checks on * the attr length. Let userspace figure it out.... */ hdrlen = (u8 *)xdr->p - (u8 *)iov->iov_base; attrlen += res->acl_data_offset; - recvd = req->rq_rcv_buf.len - hdrlen; - if (attrlen > recvd) { + if (attrlen > page_len) { if (res->acl_flags & NFS4_ACL_LEN_REQUEST) { /* getxattr interface called with a NULL buf */ res->acl_len = attrlen; goto out; } - dprintk("NFS: acl reply: attrlen %u > recvd %u\n", - attrlen, recvd); + dprintk("NFS: acl reply: attrlen %zu > page_len %u\n", + attrlen, page_len); return -EINVAL; } xdr_read_pages(xdr, attrlen); -- cgit v1.1 From cde4384e1037c15e5dd04c68d19c75798b6281dd Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 20 Apr 2012 15:37:33 +0200 Subject: spi/bcm63xx: convert to the pump message infrastructure This patch converts the bcm63xx SPI driver to use the SPI infrastructure pump message queue. Since we were previously sleeping in the SPI driver's transfer() function (which is not allowed) this is now fixed as well. To complete that conversion a certain number of changes have been made: - the transfer len is split into multiple hardware transfers in case its size is bigger than the hardware FIFO size - the FIFO refill is no longer done in the interrupt context, which was a bad idea leading to quick interrupt handler re-entrancy Tested-by: Tanguy Bouzeloc Signed-off-by: Florian Fainelli Signed-off-by: Grant Likely --- drivers/spi/spi-bcm63xx.c | 149 +++++++++++++++++++++++++++------------------- 1 file changed, 89 insertions(+), 60 deletions(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index f01b264..63b0028 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -1,7 +1,7 @@ /* * Broadcom BCM63xx SPI controller support * - * Copyright (C) 2009-2011 Florian Fainelli + * Copyright (C) 2009-2012 Florian Fainelli * Copyright (C) 2010 Tanguy Bouzeloc * * This program is free software; you can redistribute it and/or @@ -30,6 +30,8 @@ #include #include #include +#include +#include #include @@ -96,17 +98,12 @@ static const unsigned bcm63xx_spi_freq_table[SPI_CLK_MASK][2] = { { 391000, SPI_CLK_0_391MHZ } }; -static int bcm63xx_spi_setup_transfer(struct spi_device *spi, - struct spi_transfer *t) +static int bcm63xx_spi_check_transfer(struct spi_device *spi, + struct spi_transfer *t) { - struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); u8 bits_per_word; - u8 clk_cfg, reg; - u32 hz; - int i; bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word; - hz = (t) ? t->speed_hz : spi->max_speed_hz; if (bits_per_word != 8) { dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n", __func__, bits_per_word); @@ -119,6 +116,19 @@ static int bcm63xx_spi_setup_transfer(struct spi_device *spi, return -EINVAL; } + return 0; +} + +static void bcm63xx_spi_setup_transfer(struct spi_device *spi, + struct spi_transfer *t) +{ + struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); + u32 hz; + u8 clk_cfg, reg; + int i; + + hz = (t) ? t->speed_hz : spi->max_speed_hz; + /* Find the closest clock configuration */ for (i = 0; i < SPI_CLK_MASK; i++) { if (hz <= bcm63xx_spi_freq_table[i][0]) { @@ -139,8 +149,6 @@ static int bcm63xx_spi_setup_transfer(struct spi_device *spi, bcm_spi_writeb(bs, reg, SPI_CLK_CFG); dev_dbg(&spi->dev, "Setting clock register to %02x (hz %d)\n", clk_cfg, hz); - - return 0; } /* the spi->mode bits understood by this driver: */ @@ -165,7 +173,7 @@ static int bcm63xx_spi_setup(struct spi_device *spi) return -EINVAL; } - ret = bcm63xx_spi_setup_transfer(spi, NULL); + ret = bcm63xx_spi_check_transfer(spi, NULL); if (ret < 0) { dev_err(&spi->dev, "setup: unsupported mode bits %x\n", spi->mode & ~MODEBITS); @@ -190,28 +198,29 @@ static void bcm63xx_spi_fill_tx_fifo(struct bcm63xx_spi *bs) bs->remaining_bytes -= size; } -static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) +static unsigned int bcm63xx_txrx_bufs(struct spi_device *spi, + struct spi_transfer *t) { struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); u16 msg_ctl; u16 cmd; + /* Disable the CMD_DONE interrupt */ + bcm_spi_writeb(bs, 0, SPI_INT_MASK); + dev_dbg(&spi->dev, "txrx: tx %p, rx %p, len %d\n", t->tx_buf, t->rx_buf, t->len); /* Transmitter is inhibited */ bs->tx_ptr = t->tx_buf; bs->rx_ptr = t->rx_buf; - init_completion(&bs->done); if (t->tx_buf) { bs->remaining_bytes = t->len; bcm63xx_spi_fill_tx_fifo(bs); } - /* Enable the command done interrupt which - * we use to determine completion of a command */ - bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK); + init_completion(&bs->done); /* Fill in the Message control register */ msg_ctl = (t->len << SPI_BYTE_CNT_SHIFT); @@ -230,33 +239,76 @@ static int bcm63xx_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT); cmd |= (spi->chip_select << SPI_CMD_DEVICE_ID_SHIFT); bcm_spi_writew(bs, cmd, SPI_CMD); - wait_for_completion(&bs->done); - /* Disable the CMD_DONE interrupt */ - bcm_spi_writeb(bs, 0, SPI_INT_MASK); + /* Enable the CMD_DONE interrupt */ + bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK); return t->len - bs->remaining_bytes; } -static int bcm63xx_transfer(struct spi_device *spi, struct spi_message *m) +static int bcm63xx_spi_prepare_transfer(struct spi_master *master) { - struct bcm63xx_spi *bs = spi_master_get_devdata(spi->master); - struct spi_transfer *t; - int ret = 0; + struct bcm63xx_spi *bs = spi_master_get_devdata(master); - if (unlikely(list_empty(&m->transfers))) - return -EINVAL; + pm_runtime_get_sync(&bs->pdev->dev); - if (bs->stopping) - return -ESHUTDOWN; + return 0; +} + +static int bcm63xx_spi_unprepare_transfer(struct spi_master *master) +{ + struct bcm63xx_spi *bs = spi_master_get_devdata(master); + + pm_runtime_put(&bs->pdev->dev); + + return 0; +} + +static int bcm63xx_spi_transfer_one(struct spi_master *master, + struct spi_message *m) +{ + struct bcm63xx_spi *bs = spi_master_get_devdata(master); + struct spi_transfer *t; + struct spi_device *spi = m->spi; + int status = 0; + unsigned int timeout = 0; list_for_each_entry(t, &m->transfers, transfer_list) { - ret += bcm63xx_txrx_bufs(spi, t); - } + unsigned int len = t->len; + u8 rx_tail; - m->complete(m->context); + status = bcm63xx_spi_check_transfer(spi, t); + if (status < 0) + goto exit; - return ret; + /* configure adapter for a new transfer */ + bcm63xx_spi_setup_transfer(spi, t); + + while (len) { + /* send the data */ + len -= bcm63xx_txrx_bufs(spi, t); + + timeout = wait_for_completion_timeout(&bs->done, HZ); + if (!timeout) { + status = -ETIMEDOUT; + goto exit; + } + + /* read out all data */ + rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL); + + /* Read out all the data */ + if (rx_tail) + memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail); + } + + m->actual_length += t->len; + } +exit: + m->status = status; + spi_finalize_current_message(master); + + return 0; } /* This driver supports single master mode only. Hence @@ -267,39 +319,15 @@ static irqreturn_t bcm63xx_spi_interrupt(int irq, void *dev_id) struct spi_master *master = (struct spi_master *)dev_id; struct bcm63xx_spi *bs = spi_master_get_devdata(master); u8 intr; - u16 cmd; /* Read interupts and clear them immediately */ intr = bcm_spi_readb(bs, SPI_INT_STATUS); bcm_spi_writeb(bs, SPI_INTR_CLEAR_ALL, SPI_INT_STATUS); bcm_spi_writeb(bs, 0, SPI_INT_MASK); - /* A tansfer completed */ - if (intr & SPI_INTR_CMD_DONE) { - u8 rx_tail; - - rx_tail = bcm_spi_readb(bs, SPI_RX_TAIL); - - /* Read out all the data */ - if (rx_tail) - memcpy_fromio(bs->rx_ptr, bs->rx_io, rx_tail); - - /* See if there is more data to send */ - if (bs->remaining_bytes > 0) { - bcm63xx_spi_fill_tx_fifo(bs); - - /* Start the transfer */ - bcm_spi_writew(bs, SPI_HD_W << SPI_MSG_TYPE_SHIFT, - SPI_MSG_CTL); - cmd = bcm_spi_readw(bs, SPI_CMD); - cmd |= SPI_CMD_START_IMMEDIATE; - cmd |= (0 << SPI_CMD_PREPEND_BYTE_CNT_SHIFT); - bcm_spi_writeb(bs, SPI_INTR_CMD_DONE, SPI_INT_MASK); - bcm_spi_writew(bs, cmd, SPI_CMD); - } else { - complete(&bs->done); - } - } + /* A transfer completed */ + if (intr & SPI_INTR_CMD_DONE) + complete(&bs->done); return IRQ_HANDLED; } @@ -345,7 +373,6 @@ static int __devinit bcm63xx_spi_probe(struct platform_device *pdev) } bs = spi_master_get_devdata(master); - init_completion(&bs->done); platform_set_drvdata(pdev, master); bs->pdev = pdev; @@ -379,7 +406,9 @@ static int __devinit bcm63xx_spi_probe(struct platform_device *pdev) master->bus_num = pdata->bus_num; master->num_chipselect = pdata->num_chipselect; master->setup = bcm63xx_spi_setup; - master->transfer = bcm63xx_transfer; + master->prepare_transfer_hardware = bcm63xx_spi_prepare_transfer; + master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer; + master->transfer_one_message = bcm63xx_spi_transfer_one; bs->speed_hz = pdata->speed_hz; bs->stopping = 0; bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); -- cgit v1.1 From 1e41dc0ee2f3807328db95e4f87ff1333245190f Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 20 Apr 2012 15:37:34 +0200 Subject: spi/bcm63xx: don't use the stopping state We do not need to use a flag to indicate if the master driver is stopping it is sufficient to perform spi master unregistering in the platform driver's remove function. Signed-off-by: Florian Fainelli Signed-off-by: Grant Likely --- drivers/spi/spi-bcm63xx.c | 13 ++----------- 1 file changed, 2 insertions(+), 11 deletions(-) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 63b0028..80e5ed3 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -39,8 +39,6 @@ #define DRV_VER "0.1.2" struct bcm63xx_spi { - spinlock_t lock; - int stopping; struct completion done; void __iomem *regs; @@ -161,9 +159,6 @@ static int bcm63xx_spi_setup(struct spi_device *spi) bs = spi_master_get_devdata(spi->master); - if (bs->stopping) - return -ESHUTDOWN; - if (!spi->bits_per_word) spi->bits_per_word = 8; @@ -410,10 +405,8 @@ static int __devinit bcm63xx_spi_probe(struct platform_device *pdev) master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer; master->transfer_one_message = bcm63xx_spi_transfer_one; bs->speed_hz = pdata->speed_hz; - bs->stopping = 0; bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); - spin_lock_init(&bs->lock); /* Initialize hardware */ clk_enable(bs->clk); @@ -447,18 +440,16 @@ static int __devexit bcm63xx_spi_remove(struct platform_device *pdev) struct spi_master *master = platform_get_drvdata(pdev); struct bcm63xx_spi *bs = spi_master_get_devdata(master); + spi_unregister_master(master); + /* reset spi block */ bcm_spi_writeb(bs, 0, SPI_INT_MASK); - spin_lock(&bs->lock); - bs->stopping = 1; /* HW shutdown */ clk_disable(bs->clk); clk_put(bs->clk); - spin_unlock(&bs->lock); platform_set_drvdata(pdev, 0); - spi_unregister_master(master); return 0; } -- cgit v1.1 From 88a3a255a510ed193bf0cc35424761c3c9247586 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Fri, 20 Apr 2012 15:37:35 +0200 Subject: spi/bcm63xx: set master driver mode_bits. We were not properly advertising the MODE bits supported by this driver, fix that. Signed-off-by: Florian Fainelli Signed-off-by: Grant Likely --- drivers/spi/spi-bcm63xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 80e5ed3..7491971 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -404,6 +404,7 @@ static int __devinit bcm63xx_spi_probe(struct platform_device *pdev) master->prepare_transfer_hardware = bcm63xx_spi_prepare_transfer; master->unprepare_transfer_hardware = bcm63xx_spi_unprepare_transfer; master->transfer_one_message = bcm63xx_spi_transfer_one; + master->mode_bits = MODEBITS; bs->speed_hz = pdata->speed_hz; bs->tx_io = (u8 *)(bs->regs + bcm63xx_spireg(SPI_MSG_DATA)); bs->rx_io = (const u8 *)(bs->regs + bcm63xx_spireg(SPI_RX_DATA)); -- cgit v1.1 From 996d282c7ff470f150a467eb4815b90159d04c47 Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Mon, 23 Apr 2012 20:35:03 -0400 Subject: Btrfs: do not start delalloc inodes during sync btrfs_start_delalloc_inodes will just walk the list of delalloc inodes and start writing them out, but it doesn't splice the list or anything so as long as somebody is doing work on the box you could end up in this section _forever_. So just remove it, it's not needed anyway since sync will start writeback on all inodes anyway, all we need to do is wait for ordered extents and then we can commit the transaction. In my horrible torture test sync goes from taking 4 minutes to about 1.5 minutes. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/super.c | 1 - 1 file changed, 1 deletion(-) diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 43aa2dd..f267718 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -819,7 +819,6 @@ int btrfs_sync_fs(struct super_block *sb, int wait) return 0; } - btrfs_start_delalloc_inodes(root, 0); btrfs_wait_ordered_extents(root, 0, 0); trans = btrfs_start_transaction(root, 0); -- cgit v1.1 From 3e74317ad773ba9df36db1fa32848cba41ac4d1a Mon Sep 17 00:00:00 2001 From: Jan Schmidt Date: Fri, 27 Apr 2012 12:41:45 -0400 Subject: Btrfs: fix repair code for RAID10 btrfs_map_block sets mirror_num, so that the repair code knows eventually which device gave us the read error. For RAID10, mirror_num must be 1 or 2. Before this fix mirror_num was incorrectly related to our stripe index. Signed-off-by: Jan Schmidt Signed-off-by: Chris Mason --- fs/btrfs/volumes.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 3b98417..1411b99 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3807,10 +3807,11 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, else if (mirror_num) stripe_index += mirror_num - 1; else { + int old_stripe_index = stripe_index; stripe_index = find_live_mirror(map, stripe_index, map->sub_stripes, stripe_index + current->pid % map->sub_stripes); - mirror_num = stripe_index + 1; + mirror_num = stripe_index - old_stripe_index + 1; } } else { /* -- cgit v1.1 From 1daf3540fa77faea2f91d96bcaf07ce48ee827be Mon Sep 17 00:00:00 2001 From: Daniel J Blueman Date: Fri, 27 Apr 2012 12:41:46 -0400 Subject: Btrfs: Prevent root_list corruption I was seeing root_list corruption on unmount during fs resize in 3.4-rc4; add correct locking to address this. Signed-off-by: Daniel J Blueman Signed-off-by: Chris Mason --- fs/btrfs/relocation.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 017281d..5a105a0 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1279,7 +1279,9 @@ static int __update_reloc_root(struct btrfs_root *root, int del) if (rb_node) backref_tree_panic(rb_node, -EEXIST, node->bytenr); } else { + spin_lock(&root->fs_info->trans_lock); list_del_init(&root->root_list); + spin_unlock(&root->fs_info->trans_lock); kfree(node); } return 0; -- cgit v1.1 From 1f699d38b6556c393ac80f1c23c2053502a51631 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Fri, 27 Apr 2012 12:41:46 -0400 Subject: Btrfs: fix block_rsv and space_info lock ordering may_commit_transaction() calls spin_lock(&space_info->lock); spin_lock(&delayed_rsv->lock); and update_global_block_rsv() calls spin_lock(&block_rsv->lock); spin_lock(&sinfo->lock); Lockdep complains about this at run time. Everywhere except in update_global_block_rsv(), the space_info lock is the outer lock, therefore the locking order in update_global_block_rsv() is changed. Signed-off-by: Stefan Behrens Signed-off-by: Chris Mason --- fs/btrfs/extent-tree.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 84497f8..6fc2e6f 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -4214,8 +4214,8 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) num_bytes = calc_global_metadata_size(fs_info); - spin_lock(&block_rsv->lock); spin_lock(&sinfo->lock); + spin_lock(&block_rsv->lock); block_rsv->size = num_bytes; @@ -4241,8 +4241,8 @@ static void update_global_block_rsv(struct btrfs_fs_info *fs_info) block_rsv->full = 1; } - spin_unlock(&sinfo->lock); spin_unlock(&block_rsv->lock); + spin_unlock(&sinfo->lock); } static void init_global_block_rsv(struct btrfs_fs_info *fs_info) -- cgit v1.1 From 7654b72417e10e294563496e25211200f9b8b6d3 Mon Sep 17 00:00:00 2001 From: Daniel J Blueman Date: Fri, 27 Apr 2012 12:41:46 -0400 Subject: Btrfs: Fix space checking during fs resize Fix out-of-space checking, addressing a warning and potential resource leak when resizing the filesystem down while allocating blocks. Signed-off-by: Daniel J Blueman Reviewed-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/relocation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 5a105a0..646ee21 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -3813,7 +3813,7 @@ restart: ret = btrfs_block_rsv_check(rc->extent_root, rc->block_rsv, 5); if (ret < 0) { - if (ret != -EAGAIN) { + if (ret != -ENOSPC) { err = ret; WARN_ON(1); break; -- cgit v1.1 From ea505bc99f77f3f9db02bb965bd59ac5db063f60 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Thu, 19 Apr 2012 11:48:15 +0530 Subject: spi/pl022: Allow request for higher frequency than maximum possible Currently, if we request for frequency greater than maximum possible, spi driver returns error. For example, if the spi block src frequency is 333/4 MHz, i.e. 83.33.. MHz, maximum frequency programmable would be src/2. Which would come around 41.6... It is difficult to pass frequency in these figures. We normally try to program in round figures, like 42 MHz and it should get programmed to <= requested_frequency, i.e. 41.6... For this to happen, we must not return error even if requested freq is higher than max possible. But should program it to max possible. Reported-by: Vinit Kamalaksha Shenoy Signed-off-by: Viresh Kumar Acked-by: Linus Walleij Signed-off-by: Grant Likely --- drivers/spi/spi-pl022.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 8aa44e7..400ae21 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1667,9 +1667,15 @@ static int calculate_effective_freq(struct pl022 *pl022, int freq, struct /* cpsdvsr = 254 & scr = 255 */ min_tclk = spi_rate(rate, CPSDVR_MAX, SCR_MAX); - if (!((freq <= max_tclk) && (freq >= min_tclk))) { + if (freq > max_tclk) + dev_warn(&pl022->adev->dev, + "Max speed that can be programmed is %d Hz, you requested %d\n", + max_tclk, freq); + + if (freq < min_tclk) { dev_err(&pl022->adev->dev, - "controller data is incorrect: out of range frequency"); + "Requested frequency: %d Hz is less than minimum possible %d Hz\n", + freq, min_tclk); return -EINVAL; } -- cgit v1.1 From 5794d21ef4639f0e33440927bb903f9598c21e92 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Tue, 17 Apr 2012 14:36:40 +0100 Subject: Avoid beyond bounds copy while caching ACL When attempting to cache ACLs returned from the server, if the bitmap size + the ACL size is greater than a PAGE_SIZE but the ACL size itself is smaller than a PAGE_SIZE, we can read past the buffer page boundary. Signed-off-by: Sachin Prabhu Reported-by: Jian Li Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 12 +++++------- fs/nfs/nfs4xdr.c | 2 +- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index f5f125f..2ce0698 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3628,16 +3628,16 @@ out: return ret; } -static void nfs4_write_cached_acl(struct inode *inode, const char *buf, size_t acl_len) +static void nfs4_write_cached_acl(struct inode *inode, struct page **pages, size_t pgbase, size_t acl_len) { struct nfs4_cached_acl *acl; - if (buf && acl_len <= PAGE_SIZE) { + if (pages && acl_len <= PAGE_SIZE) { acl = kmalloc(sizeof(*acl) + acl_len, GFP_KERNEL); if (acl == NULL) goto out; acl->cached = 1; - memcpy(acl->data, buf, acl_len); + _copy_from_pages(acl->data, pages, pgbase, acl_len); } else { acl = kmalloc(sizeof(*acl), GFP_KERNEL); if (acl == NULL) @@ -3670,7 +3670,6 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu struct nfs_getaclres res = { .acl_len = buflen, }; - void *resp_buf; struct rpc_message msg = { .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETACL], .rpc_argp = &args, @@ -3705,7 +3704,6 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu * the page we send as a guess */ if (buf == NULL) res.acl_flags |= NFS4_ACL_LEN_REQUEST; - resp_buf = page_address(pages[0]); dprintk("%s buf %p buflen %zu npages %d args.acl_len %zu\n", __func__, buf, buflen, npages, args.acl_len); @@ -3716,9 +3714,9 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu acl_len = res.acl_len - res.acl_data_offset; if (acl_len > args.acl_len) - nfs4_write_cached_acl(inode, NULL, acl_len); + nfs4_write_cached_acl(inode, NULL, 0, acl_len); else - nfs4_write_cached_acl(inode, resp_buf + res.acl_data_offset, + nfs4_write_cached_acl(inode, pages, res.acl_data_offset, acl_len); if (buf) { ret = -ERANGE; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 9312dd7..203c096 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4940,7 +4940,7 @@ static int decode_getacl(struct xdr_stream *xdr, struct rpc_rqst *req, res->acl_len = attrlen; goto out; } - dprintk("NFS: acl reply: attrlen %zu > page_len %u\n", + dprintk("NFS: acl reply: attrlen %u > page_len %zu\n", attrlen, page_len); return -EINVAL; } -- cgit v1.1 From a4dff1bc492ee4a2184d384ae8b5bcab5859e150 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 20 Apr 2012 18:11:02 +0400 Subject: SUNRPC: skip dead but not buried clients on PipeFS events These clients can't be safely dereferenced if their counter in 0. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 6797246..d10ebc4 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -218,7 +218,8 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) || ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry)) continue; - atomic_inc(&clnt->cl_count); + if (atomic_inc_not_zero(&clnt->cl_count) == 0) + continue; spin_unlock(&sn->rpc_client_lock); return clnt; } -- cgit v1.1 From 7aab449e5a2ebfa9c5116e87e16536bc4195e4de Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 20 Apr 2012 18:19:18 +0400 Subject: SUNRPC: skip clients with program without PipeFS entries 1) This is sane. 2) Otherwise there will be soft lockup: do { rpc_get_client_for_event (clnt->cl_dentry == NULL ==> choose) __rpc_pipefs_event (clnt->cl_program->pipe_dir_name == NULL ==> return) } while (1) Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index d10ebc4..8a19849 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -184,8 +184,6 @@ static int __rpc_pipefs_event(struct rpc_clnt *clnt, unsigned long event, switch (event) { case RPC_PIPEFS_MOUNT: - if (clnt->cl_program->pipe_dir_name == NULL) - break; dentry = rpc_setup_pipedir_sb(sb, clnt, clnt->cl_program->pipe_dir_name); BUG_ON(dentry == NULL); @@ -215,6 +213,8 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) spin_lock(&sn->rpc_client_lock); list_for_each_entry(clnt, &sn->all_clients, cl_clients) { + if (clnt->cl_program->pipe_dir_name == NULL) + break; if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) || ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry)) continue; -- cgit v1.1 From 37629b572cc4e80fc24b4139a24df1a89415d534 Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 20 Apr 2012 18:19:56 +0400 Subject: SUNRPC: set per-net PipeFS superblock before notification There can be a case, when on MOUNT event RPC client (after it's dentries were created) is not longer hold by anyone except notification callback. I.e. on release this client will be destoroyed. And it's dentries have to be destroyed as well. Which in turn requires per-net PipeFS superblock to be set. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- net/sunrpc/rpc_pipe.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c index 0af37fc..3b62cf2 100644 --- a/net/sunrpc/rpc_pipe.c +++ b/net/sunrpc/rpc_pipe.c @@ -1126,19 +1126,20 @@ rpc_fill_super(struct super_block *sb, void *data, int silent) return -ENOMEM; dprintk("RPC: sending pipefs MOUNT notification for net %p%s\n", net, NET_NAME(net)); + sn->pipefs_sb = sb; err = blocking_notifier_call_chain(&rpc_pipefs_notifier_list, RPC_PIPEFS_MOUNT, sb); if (err) goto err_depopulate; sb->s_fs_info = get_net(net); - sn->pipefs_sb = sb; return 0; err_depopulate: blocking_notifier_call_chain(&rpc_pipefs_notifier_list, RPC_PIPEFS_UMOUNT, sb); + sn->pipefs_sb = NULL; __rpc_depopulate(root, files, RPCAUTH_lockd, RPCAUTH_RootEOF); return err; } -- cgit v1.1 From ea8cfa06795bb30d2ea61f503ef129284492c06a Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Fri, 27 Apr 2012 13:00:17 +0400 Subject: SUNRPC: traverse clients tree on PipeFS event v2: recursion was replaced by loop If client is a clone, then it's parent can not be in the list. But parent's Pipefs dentries have to be created and destroyed. Note: event skip helper for clients introduced Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- net/sunrpc/clnt.c | 29 +++++++++++++++++++++++++---- 1 file changed, 25 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 8a19849..d127bd7 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -176,8 +176,16 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, const char *dir_name) return 0; } -static int __rpc_pipefs_event(struct rpc_clnt *clnt, unsigned long event, - struct super_block *sb) +static inline int rpc_clnt_skip_event(struct rpc_clnt *clnt, unsigned long event) +{ + if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) || + ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry)) + return 1; + return 0; +} + +static int __rpc_clnt_handle_event(struct rpc_clnt *clnt, unsigned long event, + struct super_block *sb) { struct dentry *dentry; int err = 0; @@ -206,6 +214,20 @@ static int __rpc_pipefs_event(struct rpc_clnt *clnt, unsigned long event, return err; } +static int __rpc_pipefs_event(struct rpc_clnt *clnt, unsigned long event, + struct super_block *sb) +{ + int error = 0; + + for (;; clnt = clnt->cl_parent) { + if (!rpc_clnt_skip_event(clnt, event)) + error = __rpc_clnt_handle_event(clnt, event, sb); + if (error || clnt == clnt->cl_parent) + break; + } + return error; +} + static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) { struct sunrpc_net *sn = net_generic(net, sunrpc_net_id); @@ -215,8 +237,7 @@ static struct rpc_clnt *rpc_get_client_for_event(struct net *net, int event) list_for_each_entry(clnt, &sn->all_clients, cl_clients) { if (clnt->cl_program->pipe_dir_name == NULL) break; - if (((event == RPC_PIPEFS_MOUNT) && clnt->cl_dentry) || - ((event == RPC_PIPEFS_UMOUNT) && !clnt->cl_dentry)) + if (rpc_clnt_skip_event(clnt, event)) continue; if (atomic_inc_not_zero(&clnt->cl_count) == 0) continue; -- cgit v1.1 From 31e4dda4747713de13889f7c79c7aec341fea61b Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:38 -0400 Subject: NFS: Fix SECINFO_NO_NAME I was using the same decoder function for SECINFO and SECINFO_NO_NAME, so it was returning an error when it tried to decode an OP_SECINFO_NO_NAME header as OP_SECINFO. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs4xdr.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index 203c096..c77e802 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -5094,16 +5094,13 @@ out_err: return -EINVAL; } -static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) +static int decode_secinfo_common(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) { struct nfs4_secinfo_flavor *sec_flavor; int status; __be32 *p; int i, num_flavors; - status = decode_op_hdr(xdr, OP_SECINFO); - if (status) - goto out; p = xdr_inline_decode(xdr, 4); if (unlikely(!p)) goto out_overflow; @@ -5129,6 +5126,7 @@ static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) res->flavors->num_flavors++; } + status = 0; out: return status; out_overflow: @@ -5136,7 +5134,23 @@ out_overflow: return -EIO; } +static int decode_secinfo(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) +{ + int status = decode_op_hdr(xdr, OP_SECINFO); + if (status) + return status; + return decode_secinfo_common(xdr, res); +} + #if defined(CONFIG_NFS_V4_1) +static int decode_secinfo_no_name(struct xdr_stream *xdr, struct nfs4_secinfo_res *res) +{ + int status = decode_op_hdr(xdr, OP_SECINFO_NO_NAME); + if (status) + return status; + return decode_secinfo_common(xdr, res); +} + static int decode_exchange_id(struct xdr_stream *xdr, struct nfs41_exchange_id_res *res) { @@ -6821,7 +6835,7 @@ static int nfs4_xdr_dec_secinfo_no_name(struct rpc_rqst *rqstp, status = decode_putrootfh(xdr); if (status) goto out; - status = decode_secinfo(xdr, res); + status = decode_secinfo_no_name(xdr, res); out: return status; } -- cgit v1.1 From db0a9593d52f935c80085d8993bdcead1ad30b0c Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:39 -0400 Subject: NFS: Handle exceptions coming out of nfs4_proc_fs_locations() We don't want to return -NFS4ERR_WRONGSEC to the VFS because it could cause the kernel to oops. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 2ce0698..ff7571f 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -4921,7 +4921,7 @@ static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) fattr->nlink = 2; } -int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, +static int _nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, struct nfs4_fs_locations *fs_locations, struct page *page) { struct nfs_server *server = NFS_SERVER(dir); @@ -4961,6 +4961,19 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, return status; } +int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, + struct nfs4_fs_locations *fs_locations, struct page *page) +{ + struct nfs4_exception exception = { }; + int err; + do { + err = nfs4_handle_exception(NFS_SERVER(dir), + _nfs4_proc_fs_locations(dir, name, fs_locations, page), + &exception); + } while (exception.retry); + return err; +} + static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors) { int status; -- cgit v1.1 From 72de53ec4bca39c26709122a8f78bfefe7b6bca4 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:40 -0400 Subject: NFS: Do secinfo as part of lookup Whenever lookup sees wrongsec do a secinfo and retry the lookup to find attributes of the file or directory, such as "is this a referral mountpoint?". This also allows me to remove handling -NFS4ERR_WRONSEC as part of getattr xdr decoding. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 1 - fs/nfs/nfs4_fs.h | 4 ++++ fs/nfs/nfs4namespace.c | 52 ++++++++++++++++++++++++++++++++++++++++ fs/nfs/nfs4proc.c | 64 ++++++++++++++++++++++++++++++++++++-------------- fs/nfs/nfs4xdr.c | 2 -- 5 files changed, 103 insertions(+), 20 deletions(-) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 2476dc6..45966d9 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -234,7 +234,6 @@ extern const u32 nfs41_maxwrite_overhead; /* nfs4proc.c */ #ifdef CONFIG_NFS_V4 extern struct rpc_procinfo nfs4_procedures[]; -void nfs_fixup_secinfo_attributes(struct nfs_fattr *, struct nfs_fh *); #endif extern int nfs4_init_ds_session(struct nfs_client *clp); diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index b6db9e3..c82c2cd 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -205,6 +205,9 @@ struct nfs4_state_maintenance_ops { extern const struct dentry_operations nfs4_dentry_operations; extern const struct inode_operations nfs4_dir_inode_operations; +/* nfs4namespace.c */ +struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *, struct inode *, struct qstr *); + /* nfs4proc.c */ extern int nfs4_proc_setclientid(struct nfs_client *, u32, unsigned short, struct rpc_cred *, struct nfs4_setclientid_res *); extern int nfs4_proc_setclientid_confirm(struct nfs_client *, struct nfs4_setclientid_res *arg, struct rpc_cred *); @@ -215,6 +218,7 @@ extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, boo extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, struct nfs4_fs_locations *fs_locations, struct page *page); +extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); extern int nfs4_release_lockowner(struct nfs4_lock_state *); extern const struct xattr_handler *nfs4_xattr_handlers[]; diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 7483a17..9f8681b 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -132,6 +132,58 @@ static size_t nfs_parse_server_name(char *string, size_t len, return ret; } +static rpc_authflavor_t nfs4_negotiate_security(struct inode *inode, struct qstr *name) +{ + struct page *page; + struct nfs4_secinfo_flavors *flavors; + rpc_authflavor_t flavor; + int err; + + page = alloc_page(GFP_KERNEL); + if (!page) + return -ENOMEM; + flavors = page_address(page); + + err = nfs4_proc_secinfo(inode, name, flavors); + if (err < 0) { + flavor = err; + goto out; + } + + flavor = nfs_find_best_sec(flavors); + +out: + put_page(page); + return flavor; +} + +/* + * Please call rpc_shutdown_client() when you are done with this client. + */ +struct rpc_clnt *nfs4_create_sec_client(struct rpc_clnt *clnt, struct inode *inode, + struct qstr *name) +{ + struct rpc_clnt *clone; + struct rpc_auth *auth; + rpc_authflavor_t flavor; + + flavor = nfs4_negotiate_security(inode, name); + if (flavor < 0) + return ERR_PTR(flavor); + + clone = rpc_clone_client(clnt); + if (IS_ERR(clone)) + return clone; + + auth = rpcauth_create(flavor, clone); + if (!auth) { + rpc_shutdown_client(clone); + clone = ERR_PTR(-EIO); + } + + return clone; +} + static struct vfsmount *try_location(struct nfs_clone_mount *mountdata, char *page, char *page2, const struct nfs4_fs_location *location) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ff7571f..3d92fe6 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2528,39 +2528,69 @@ static int _nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, return status; } -void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr, struct nfs_fh *fh) +static void nfs_fixup_secinfo_attributes(struct nfs_fattr *fattr) { - memset(fh, 0, sizeof(struct nfs_fh)); - fattr->fsid.major = 1; fattr->valid |= NFS_ATTR_FATTR_TYPE | NFS_ATTR_FATTR_MODE | - NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_FSID | NFS_ATTR_FATTR_MOUNTPOINT; + NFS_ATTR_FATTR_NLINK | NFS_ATTR_FATTR_MOUNTPOINT; fattr->mode = S_IFDIR | S_IRUGO | S_IXUGO; fattr->nlink = 2; } -static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, - struct nfs_fh *fhandle, struct nfs_fattr *fattr) +static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, + struct qstr *name, struct nfs_fh *fhandle, + struct nfs_fattr *fattr) { struct nfs4_exception exception = { }; + struct rpc_clnt *client = *clnt; int err; do { - int status; - - status = _nfs4_proc_lookup(clnt, dir, name, fhandle, fattr); - switch (status) { + err = _nfs4_proc_lookup(client, dir, name, fhandle, fattr); + switch (err) { case -NFS4ERR_BADNAME: - return -ENOENT; + err = -ENOENT; + goto out; case -NFS4ERR_MOVED: - return nfs4_get_referral(dir, name, fattr, fhandle); + err = nfs4_get_referral(dir, name, fattr, fhandle); + goto out; case -NFS4ERR_WRONGSEC: - nfs_fixup_secinfo_attributes(fattr, fhandle); + err = -EPERM; + if (client != *clnt) + goto out; + + client = nfs4_create_sec_client(client, dir, name); + if (IS_ERR(client)) + return PTR_ERR(client); + + exception.retry = 1; + break; + default: + err = nfs4_handle_exception(NFS_SERVER(dir), err, &exception); } - err = nfs4_handle_exception(NFS_SERVER(dir), - status, &exception); } while (exception.retry); + +out: + if (err == 0) + *clnt = client; + else if (client != *clnt) + rpc_shutdown_client(client); + return err; } +static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qstr *name, + struct nfs_fh *fhandle, struct nfs_fattr *fattr) +{ + int status; + struct rpc_clnt *client = NFS_CLIENT(dir); + + status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); + if (client != NFS_CLIENT(dir)) { + rpc_shutdown_client(client); + nfs_fixup_secinfo_attributes(fattr); + } + return status; +} + static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) { struct nfs_server *server = NFS_SERVER(inode); @@ -4996,8 +5026,8 @@ static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct return status; } -static int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, - struct nfs4_secinfo_flavors *flavors) +int nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, + struct nfs4_secinfo_flavors *flavors) { struct nfs4_exception exception = { }; int err; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index c77e802..c54aae3 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -4258,8 +4258,6 @@ static int decode_getfattr_attrs(struct xdr_stream *xdr, uint32_t *bitmap, status = decode_attr_error(xdr, bitmap, &err); if (status < 0) goto xdr_error; - if (err == -NFS4ERR_WRONGSEC) - nfs_fixup_secinfo_attributes(fattr, fh); status = decode_attr_filehandle(xdr, bitmap, fh); if (status < 0) -- cgit v1.1 From f05d147f7e3cf0d86b3a4bd5603029a7cb109633 Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:41 -0400 Subject: NFS: Fix following referral mount points with different security I create a new proc_lookup_mountpoint() to use when submounting an NFS v4 share. This function returns an rpc_clnt to use for performing an fs_locations() call on a referral's mountpoint. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/internal.h | 4 ++-- fs/nfs/namespace.c | 44 ++++++++++++++++++++++++++++++++++---------- fs/nfs/nfs4_fs.h | 6 ++++-- fs/nfs/nfs4namespace.c | 4 ++-- fs/nfs/nfs4proc.c | 40 ++++++++++++++++++++++++++++++---------- 5 files changed, 72 insertions(+), 26 deletions(-) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 45966d9..49c09b4 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -186,10 +186,10 @@ static inline void nfs_fs_proc_exit(void) /* nfs4namespace.c */ #ifdef CONFIG_NFS_V4 -extern struct vfsmount *nfs_do_refmount(struct dentry *dentry); +extern struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry); #else static inline -struct vfsmount *nfs_do_refmount(struct dentry *dentry) +struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry) { return ERR_PTR(-ENOENT); } diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 1807866..b9a593d 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -200,6 +200,22 @@ out_shutdown: out: return err; } + +static struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir, + struct qstr *name, + struct nfs_fh *fh, + struct nfs_fattr *fattr) +{ + int err; + + if (NFS_PROTO(dir)->version == 4) + return nfs4_proc_lookup_mountpoint(dir, name, fh, fattr); + + err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr); + if (err) + return ERR_PTR(err); + return rpc_clone_client(NFS_SERVER(dir)->client); +} #else /* CONFIG_NFS_V4 */ static inline int nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent, struct dentry *dentry, @@ -209,6 +225,17 @@ static inline int nfs_lookup_with_sec(struct nfs_server *server, { return -EPERM; } + +static inline struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir, + struct qstr *name, + struct nfs_fh *fh, + struct nfs_fattr *fattr) +{ + int err = NFS_PROTO(dir)->lookup(NFS_SERVER(dir)->client, dir, name, fh, fattr); + if (err) + return ERR_PTR(err); + return rpc_clone_client(NFS_SERVER(dir)->client); +} #endif /* CONFIG_NFS_V4 */ /* @@ -226,11 +253,10 @@ static inline int nfs_lookup_with_sec(struct nfs_server *server, struct vfsmount *nfs_d_automount(struct path *path) { struct vfsmount *mnt; - struct nfs_server *server = NFS_SERVER(path->dentry->d_inode); struct dentry *parent; struct nfs_fh *fh = NULL; struct nfs_fattr *fattr = NULL; - int err; + struct rpc_clnt *client; rpc_authflavor_t flavor = RPC_AUTH_UNIX; dprintk("--> nfs_d_automount()\n"); @@ -249,21 +275,19 @@ struct vfsmount *nfs_d_automount(struct path *path) /* Look it up again to get its attributes */ parent = dget_parent(path->dentry); - err = server->nfs_client->rpc_ops->lookup(server->client, parent->d_inode, - &path->dentry->d_name, - fh, fattr); - if (err == -EPERM && NFS_PROTO(parent->d_inode)->secinfo != NULL) - err = nfs_lookup_with_sec(server, parent, path->dentry, path, fh, fattr, &flavor); + client = nfs_lookup_mountpoint(parent->d_inode, &path->dentry->d_name, fh, fattr); dput(parent); - if (err != 0) { - mnt = ERR_PTR(err); + if (IS_ERR(client)) { + mnt = ERR_CAST(client); goto out; } if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) - mnt = nfs_do_refmount(path->dentry); + mnt = nfs_do_refmount(client, path->dentry); else mnt = nfs_do_submount(path->dentry, fh, fattr, flavor); + rpc_shutdown_client(client); + if (IS_ERR(mnt)) goto out; diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index c82c2cd..8d75021 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -216,8 +216,10 @@ extern int nfs4_init_clientid(struct nfs_client *, struct rpc_cred *); extern int nfs41_init_clientid(struct nfs_client *, struct rpc_cred *); extern int nfs4_do_close(struct nfs4_state *state, gfp_t gfp_mask, int wait, bool roc); extern int nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *fhandle); -extern int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, - struct nfs4_fs_locations *fs_locations, struct page *page); +extern int nfs4_proc_fs_locations(struct rpc_clnt *, struct inode *, const struct qstr *, + struct nfs4_fs_locations *, struct page *); +extern struct rpc_clnt *nfs4_proc_lookup_mountpoint(struct inode *, struct qstr *, + struct nfs_fh *, struct nfs_fattr *); extern int nfs4_proc_secinfo(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); extern int nfs4_release_lockowner(struct nfs4_lock_state *); extern const struct xattr_handler *nfs4_xattr_handlers[]; diff --git a/fs/nfs/nfs4namespace.c b/fs/nfs/nfs4namespace.c index 9f8681b..a7f3ded 100644 --- a/fs/nfs/nfs4namespace.c +++ b/fs/nfs/nfs4namespace.c @@ -300,7 +300,7 @@ out: * @dentry - dentry of referral * */ -struct vfsmount *nfs_do_refmount(struct dentry *dentry) +struct vfsmount *nfs_do_refmount(struct rpc_clnt *client, struct dentry *dentry) { struct vfsmount *mnt = ERR_PTR(-ENOMEM); struct dentry *parent; @@ -326,7 +326,7 @@ struct vfsmount *nfs_do_refmount(struct dentry *dentry) dprintk("%s: getting locations for %s/%s\n", __func__, parent->d_name.name, dentry->d_name.name); - err = nfs4_proc_fs_locations(parent->d_inode, &dentry->d_name, fs_locations, page); + err = nfs4_proc_fs_locations(client, parent->d_inode, &dentry->d_name, fs_locations, page); dput(parent); if (err != 0 || fs_locations->nlocations <= 0 || diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3d92fe6..75eb883 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -2377,8 +2377,9 @@ static int nfs4_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle, * Note that we'll actually follow the referral later when * we detect fsid mismatch in inode revalidation */ -static int nfs4_get_referral(struct inode *dir, const struct qstr *name, - struct nfs_fattr *fattr, struct nfs_fh *fhandle) +static int nfs4_get_referral(struct rpc_clnt *client, struct inode *dir, + const struct qstr *name, struct nfs_fattr *fattr, + struct nfs_fh *fhandle) { int status = -ENOMEM; struct page *page = NULL; @@ -2391,7 +2392,7 @@ static int nfs4_get_referral(struct inode *dir, const struct qstr *name, if (locations == NULL) goto out; - status = nfs4_proc_fs_locations(dir, name, locations, page); + status = nfs4_proc_fs_locations(client, dir, name, locations, page); if (status != 0) goto out; /* Make sure server returned a different fsid for the referral */ @@ -2550,7 +2551,7 @@ static int nfs4_proc_lookup_common(struct rpc_clnt **clnt, struct inode *dir, err = -ENOENT; goto out; case -NFS4ERR_MOVED: - err = nfs4_get_referral(dir, name, fattr, fhandle); + err = nfs4_get_referral(client, dir, name, fattr, fhandle); goto out; case -NFS4ERR_WRONGSEC: err = -EPERM; @@ -2591,6 +2592,21 @@ static int nfs4_proc_lookup(struct rpc_clnt *clnt, struct inode *dir, struct qst return status; } +struct rpc_clnt * +nfs4_proc_lookup_mountpoint(struct inode *dir, struct qstr *name, + struct nfs_fh *fhandle, struct nfs_fattr *fattr) +{ + int status; + struct rpc_clnt *client = rpc_clone_client(NFS_CLIENT(dir)); + + status = nfs4_proc_lookup_common(&client, dir, name, fhandle, fattr); + if (status < 0) { + rpc_shutdown_client(client); + return ERR_PTR(status); + } + return client; +} + static int _nfs4_proc_access(struct inode *inode, struct nfs_access_entry *entry) { struct nfs_server *server = NFS_SERVER(inode); @@ -4951,8 +4967,10 @@ static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr) fattr->nlink = 2; } -static int _nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, - struct nfs4_fs_locations *fs_locations, struct page *page) +static int _nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, + const struct qstr *name, + struct nfs4_fs_locations *fs_locations, + struct page *page) { struct nfs_server *server = NFS_SERVER(dir); u32 bitmask[2] = { @@ -4986,19 +5004,21 @@ static int _nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, nfs_fattr_init(&fs_locations->fattr); fs_locations->server = server; fs_locations->nlocations = 0; - status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); + status = nfs4_call_sync(client, server, &msg, &args.seq_args, &res.seq_res, 0); dprintk("%s: returned status = %d\n", __func__, status); return status; } -int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name, - struct nfs4_fs_locations *fs_locations, struct page *page) +int nfs4_proc_fs_locations(struct rpc_clnt *client, struct inode *dir, + const struct qstr *name, + struct nfs4_fs_locations *fs_locations, + struct page *page) { struct nfs4_exception exception = { }; int err; do { err = nfs4_handle_exception(NFS_SERVER(dir), - _nfs4_proc_fs_locations(dir, name, fs_locations, page), + _nfs4_proc_fs_locations(client, dir, name, fs_locations, page), &exception); } while (exception.retry); return err; -- cgit v1.1 From 7e6eb683d260d9325f0d1bd911518d5ed3cb4f0c Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:42 -0400 Subject: NFS: Honor the authflavor set in the clone mount data The authflavor is set in an nfs_clone_mount structure and passed to the xdev_mount() functions where it was promptly ignored. Instead, use it to initialize an rpc_clnt for the cloned server. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/client.c | 5 +++-- fs/nfs/internal.h | 3 ++- fs/nfs/namespace.c | 3 +-- fs/nfs/super.c | 4 ++-- 4 files changed, 8 insertions(+), 7 deletions(-) diff --git a/fs/nfs/client.c b/fs/nfs/client.c index da7b5e4..60f7e4e 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1729,7 +1729,8 @@ error: */ struct nfs_server *nfs_clone_server(struct nfs_server *source, struct nfs_fh *fh, - struct nfs_fattr *fattr) + struct nfs_fattr *fattr, + rpc_authflavor_t flavor) { struct nfs_server *server; struct nfs_fattr *fattr_fsinfo; @@ -1758,7 +1759,7 @@ struct nfs_server *nfs_clone_server(struct nfs_server *source, error = nfs_init_server_rpcclient(server, source->client->cl_timeout, - source->client->cl_auth->au_flavor); + flavor); if (error < 0) goto out_free_server; if (!IS_ERR(source->client_acl)) diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 49c09b4..b777bda 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -165,7 +165,8 @@ extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *, extern void nfs_free_server(struct nfs_server *server); extern struct nfs_server *nfs_clone_server(struct nfs_server *, struct nfs_fh *, - struct nfs_fattr *); + struct nfs_fattr *, + rpc_authflavor_t); extern void nfs_mark_client_ready(struct nfs_client *clp, int state); extern int nfs4_check_client_ready(struct nfs_client *clp); extern struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp, diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index b9a593d..78dde30 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -257,7 +257,6 @@ struct vfsmount *nfs_d_automount(struct path *path) struct nfs_fh *fh = NULL; struct nfs_fattr *fattr = NULL; struct rpc_clnt *client; - rpc_authflavor_t flavor = RPC_AUTH_UNIX; dprintk("--> nfs_d_automount()\n"); @@ -285,7 +284,7 @@ struct vfsmount *nfs_d_automount(struct path *path) if (fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) mnt = nfs_do_refmount(client, path->dentry); else - mnt = nfs_do_submount(path->dentry, fh, fattr, flavor); + mnt = nfs_do_submount(path->dentry, fh, fattr, client->cl_auth->au_flavor); rpc_shutdown_client(client); if (IS_ERR(mnt)) diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 1e6715f..4ac7fca 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2428,7 +2428,7 @@ nfs_xdev_mount(struct file_system_type *fs_type, int flags, dprintk("--> nfs_xdev_mount()\n"); /* create a new volume representation */ - server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr); + server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor); if (IS_ERR(server)) { error = PTR_ERR(server); goto out_err_noserver; @@ -2955,7 +2955,7 @@ nfs4_xdev_mount(struct file_system_type *fs_type, int flags, dprintk("--> nfs4_xdev_mount()\n"); /* create a new volume representation */ - server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr); + server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr, data->authflavor); if (IS_ERR(server)) { error = PTR_ERR(server); goto out_err_noserver; -- cgit v1.1 From e245d4250d0326cfcf7c816a2081b6ab2ea810be Mon Sep 17 00:00:00 2001 From: Bryan Schumaker Date: Fri, 27 Apr 2012 13:27:43 -0400 Subject: NFS: Remove unused function nfs_lookup_with_sec() This fixes a compiler warning. Signed-off-by: Bryan Schumaker Signed-off-by: Trond Myklebust --- fs/nfs/namespace.c | 62 ------------------------------------------------------ 1 file changed, 62 deletions(-) diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index 78dde30..d51868e 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -148,59 +148,6 @@ rpc_authflavor_t nfs_find_best_sec(struct nfs4_secinfo_flavors *flavors) return pseudoflavor; } -static int nfs_negotiate_security(const struct dentry *parent, - const struct dentry *dentry, - rpc_authflavor_t *flavor) -{ - struct page *page; - struct nfs4_secinfo_flavors *flavors; - int (*secinfo)(struct inode *, const struct qstr *, struct nfs4_secinfo_flavors *); - int ret = -EPERM; - - secinfo = NFS_PROTO(parent->d_inode)->secinfo; - if (secinfo != NULL) { - page = alloc_page(GFP_KERNEL); - if (!page) { - ret = -ENOMEM; - goto out; - } - flavors = page_address(page); - ret = secinfo(parent->d_inode, &dentry->d_name, flavors); - *flavor = nfs_find_best_sec(flavors); - put_page(page); - } - -out: - return ret; -} - -static int nfs_lookup_with_sec(struct nfs_server *server, struct dentry *parent, - struct dentry *dentry, struct path *path, - struct nfs_fh *fh, struct nfs_fattr *fattr, - rpc_authflavor_t *flavor) -{ - struct rpc_clnt *clone; - struct rpc_auth *auth; - int err; - - err = nfs_negotiate_security(parent, path->dentry, flavor); - if (err < 0) - goto out; - clone = rpc_clone_client(server->client); - auth = rpcauth_create(*flavor, clone); - if (!auth) { - err = -EIO; - goto out_shutdown; - } - err = server->nfs_client->rpc_ops->lookup(clone, parent->d_inode, - &path->dentry->d_name, - fh, fattr); -out_shutdown: - rpc_shutdown_client(clone); -out: - return err; -} - static struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir, struct qstr *name, struct nfs_fh *fh, @@ -217,15 +164,6 @@ static struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir, return rpc_clone_client(NFS_SERVER(dir)->client); } #else /* CONFIG_NFS_V4 */ -static inline int nfs_lookup_with_sec(struct nfs_server *server, - struct dentry *parent, struct dentry *dentry, - struct path *path, struct nfs_fh *fh, - struct nfs_fattr *fattr, - rpc_authflavor_t *flavor) -{ - return -EPERM; -} - static inline struct rpc_clnt *nfs_lookup_mountpoint(struct inode *dir, struct qstr *name, struct nfs_fh *fh, -- cgit v1.1 From 22ac3e82e1d3e5cad92538fe4ab51906cb220444 Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:08 -0400 Subject: spi/bfin5xx: rename config macro name for bfin5xx spi controller driver This controller is only for blackfin 5xx soc, so rename it to BFIN5XX Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/Kconfig | 2 +- drivers/spi/Makefile | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 3ed7483..00c0240 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -74,7 +74,7 @@ config SPI_ATMEL This selects a driver for the Atmel SPI Controller, present on many AT32 (AVR32) and AT91 (ARM) chips. -config SPI_BFIN +config SPI_BFIN5XX tristate "SPI controller driver for ADI Blackfin5xx" depends on BLACKFIN help diff --git a/drivers/spi/Makefile b/drivers/spi/Makefile index a1d48e0..9d75d21 100644 --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile @@ -15,7 +15,7 @@ obj-$(CONFIG_SPI_ATMEL) += spi-atmel.o obj-$(CONFIG_SPI_ATH79) += spi-ath79.o obj-$(CONFIG_SPI_AU1550) += spi-au1550.o obj-$(CONFIG_SPI_BCM63XX) += spi-bcm63xx.o -obj-$(CONFIG_SPI_BFIN) += spi-bfin5xx.o +obj-$(CONFIG_SPI_BFIN5XX) += spi-bfin5xx.o obj-$(CONFIG_SPI_BFIN_SPORT) += spi-bfin-sport.o obj-$(CONFIG_SPI_BITBANG) += spi-bitbang.o obj-$(CONFIG_SPI_BUTTERFLY) += spi-butterfly.o -- cgit v1.1 From 488e1a9de27f0a299fc185f0b5c67246a3f0c6c9 Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:09 -0400 Subject: spi/spi-bfin-sport: move word length setup to transfer handler Each transfer may have its own bits per word. Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/spi-bfin-sport.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index 248a2cc..bfd9047 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -252,19 +252,15 @@ static void bfin_sport_spi_restore_state(struct bfin_sport_spi_master_data *drv_data) { struct bfin_sport_spi_slave_data *chip = drv_data->cur_chip; - unsigned int bits = (drv_data->ops == &bfin_sport_transfer_ops_u8 ? 7 : 15); bfin_sport_spi_disable(drv_data); dev_dbg(drv_data->dev, "restoring spi ctl state\n"); bfin_write(&drv_data->regs->tcr1, chip->ctl_reg); - bfin_write(&drv_data->regs->tcr2, bits); bfin_write(&drv_data->regs->tclkdiv, chip->baud); - bfin_write(&drv_data->regs->tfsdiv, bits); SSYNC(); bfin_write(&drv_data->regs->rcr1, chip->ctl_reg & ~(ITCLK | ITFS)); - bfin_write(&drv_data->regs->rcr2, bits); SSYNC(); bfin_sport_spi_cs_active(chip); @@ -425,6 +421,9 @@ bfin_sport_spi_pump_transfers(unsigned long data) drv_data->ops = &bfin_sport_transfer_ops_u8; else drv_data->ops = &bfin_sport_transfer_ops_u16; + bfin_write(&drv_data->regs->tcr2, bits_per_word - 1); + bfin_write(&drv_data->regs->tfsdiv, bits_per_word - 1); + bfin_write(&drv_data->regs->rcr2, bits_per_word - 1); drv_data->state = RUNNING_STATE; -- cgit v1.1 From 7666fd8b02af87a8b672b00d47e56d77f709127e Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:10 -0400 Subject: spi/bfin_spi: drop bits_per_word from client data No other SPI controller has this field, and SPI clients should be setting this up in their own drivers. So drop it from the Blackfin controller to keep people from using it. Signed-off-by: Mike Frysinger Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/spi-bfin5xx.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 3b83ff8..c0cdcb7c8 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -1026,7 +1026,6 @@ static int bfin_spi_setup(struct spi_device *spi) chip->cs_chg_udelay = chip_info->cs_chg_udelay; chip->idle_tx_val = chip_info->idle_tx_val; chip->pio_interrupt = chip_info->pio_interrupt; - spi->bits_per_word = chip_info->bits_per_word; } else { /* force a default base state */ chip->ctl_reg &= bfin_ctl_reg; -- cgit v1.1 From 8d9d2a4b6ca0013b62a438808d22bdd615abcd00 Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:11 -0400 Subject: spi/spi_bfin_sport: drop bits_per_word from client data Since the member was dropped from the common Blackfin header, we need to stop using it in the SPORT driver too. Signed-off-by: Mike Frysinger Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/spi-bfin-sport.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-bfin-sport.c b/drivers/spi/spi-bfin-sport.c index bfd9047..1fe5119 100644 --- a/drivers/spi/spi-bfin-sport.c +++ b/drivers/spi/spi-bfin-sport.c @@ -416,11 +416,12 @@ bfin_sport_spi_pump_transfers(unsigned long data) drv_data->cs_change = transfer->cs_change; /* Bits per word setup */ - bits_per_word = transfer->bits_per_word ? : message->spi->bits_per_word; - if (bits_per_word == 8) - drv_data->ops = &bfin_sport_transfer_ops_u8; - else + bits_per_word = transfer->bits_per_word ? : + message->spi->bits_per_word ? : 8; + if (bits_per_word % 16 == 0) drv_data->ops = &bfin_sport_transfer_ops_u16; + else + drv_data->ops = &bfin_sport_transfer_ops_u8; bfin_write(&drv_data->regs->tcr2, bits_per_word - 1); bfin_write(&drv_data->regs->tfsdiv, bits_per_word - 1); bfin_write(&drv_data->regs->rcr2, bits_per_word - 1); @@ -597,11 +598,12 @@ bfin_sport_spi_setup(struct spi_device *spi) } chip->cs_chg_udelay = chip_info->cs_chg_udelay; chip->idle_tx_val = chip_info->idle_tx_val; - spi->bits_per_word = chip_info->bits_per_word; } } - if (spi->bits_per_word != 8 && spi->bits_per_word != 16) { + if (spi->bits_per_word % 8) { + dev_err(&spi->dev, "%d bits_per_word is not supported\n", + spi->bits_per_word); ret = -EINVAL; goto error; } -- cgit v1.1 From 128465ca7c0775609b1c24f66cd6bddac5f59c9b Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:12 -0400 Subject: spi/spi-bfin5xx: fix reversed if condition in interrupt mode This condition is used to determine 8 bits or 16 and 32 bits transfer. Obviously it is reversed. Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/spi-bfin5xx.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index c0cdcb7c8..432d019 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -396,7 +396,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id) /* last read */ if (drv_data->rx) { dev_dbg(&drv_data->pdev->dev, "last read\n"); - if (n_bytes % 2) { + if (!(n_bytes % 2)) { u16 *buf = (u16 *)drv_data->rx; for (loop = 0; loop < n_bytes / 2; loop++) *buf++ = bfin_read(&drv_data->regs->rdbr); @@ -424,7 +424,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id) if (drv_data->rx && drv_data->tx) { /* duplex */ dev_dbg(&drv_data->pdev->dev, "duplex: write_TDBR\n"); - if (n_bytes % 2) { + if (!(n_bytes % 2)) { u16 *buf = (u16 *)drv_data->rx; u16 *buf2 = (u16 *)drv_data->tx; for (loop = 0; loop < n_bytes / 2; loop++) { @@ -442,7 +442,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id) } else if (drv_data->rx) { /* read */ dev_dbg(&drv_data->pdev->dev, "read: write_TDBR\n"); - if (n_bytes % 2) { + if (!(n_bytes % 2)) { u16 *buf = (u16 *)drv_data->rx; for (loop = 0; loop < n_bytes / 2; loop++) { *buf++ = bfin_read(&drv_data->regs->rdbr); @@ -458,7 +458,7 @@ static irqreturn_t bfin_spi_pio_irq_handler(int irq, void *dev_id) } else if (drv_data->tx) { /* write */ dev_dbg(&drv_data->pdev->dev, "write: write_TDBR\n"); - if (n_bytes % 2) { + if (!(n_bytes % 2)) { u16 *buf = (u16 *)drv_data->tx; for (loop = 0; loop < n_bytes / 2; loop++) { bfin_read(&drv_data->regs->rdbr); -- cgit v1.1 From 2431a8154634027ce3915200699f26fb3725a1f2 Mon Sep 17 00:00:00 2001 From: Scott Jiang Date: Mon, 23 Apr 2012 18:18:13 -0400 Subject: spi/spi-bfin5xx: Fix flush of last bit after each spi transfer This patch ensures that the last bit of a transfer gets correctly flushed out of the register. Signed-off-by: Scott Jiang Signed-off-by: Grant Likely --- drivers/spi/spi-bfin5xx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c index 432d019..9bb4d4a 100644 --- a/drivers/spi/spi-bfin5xx.c +++ b/drivers/spi/spi-bfin5xx.c @@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data) if (message->state == DONE_STATE) { dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n"); message->status = 0; + bfin_spi_flush(drv_data); bfin_spi_giveback(drv_data); return; } @@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data) message->actual_length += drv_data->len_in_bytes; /* Move to next transfer of this msg */ message->state = bfin_spi_next_transfer(drv_data); - if (drv_data->cs_change) + if (drv_data->cs_change && message->state != DONE_STATE) { + bfin_spi_flush(drv_data); bfin_spi_cs_deactive(drv_data, chip); + } } /* Schedule next transfer tasklet */ -- cgit v1.1 From fede766f28dd766d4e8feb321fdb19edb21ef6fb Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Fri, 27 Apr 2012 14:23:22 -0400 Subject: Btrfs: avoid deadlocks from GFP_KERNEL allocations during btrfs_real_readdir Btrfs has an optimization where it will preallocate dentries during readdir to fill in enough information to open the inode without an extra lookup. But, we're calling d_alloc, which is doing GFP_KERNEL allocations, and that leads to deadlocks because our readdir code has tree locks held. For now, disable this optimization. We'll fix the gfp mask in the next merge window. Signed-off-by: Chris Mason --- fs/btrfs/inode.c | 30 +----------------------------- 1 file changed, 1 insertion(+), 29 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index d953f88..3ce7805 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -4192,7 +4192,6 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, struct btrfs_path *path; struct list_head ins_list; struct list_head del_list; - struct qstr q; int ret; struct extent_buffer *leaf; int slot; @@ -4283,7 +4282,6 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, while (di_cur < di_total) { struct btrfs_key location; - struct dentry *tmp; if (verify_dir_item(root, leaf, di)) break; @@ -4304,33 +4302,7 @@ static int btrfs_real_readdir(struct file *filp, void *dirent, d_type = btrfs_filetype_table[btrfs_dir_type(leaf, di)]; btrfs_dir_item_key_to_cpu(leaf, di, &location); - q.name = name_ptr; - q.len = name_len; - q.hash = full_name_hash(q.name, q.len); - tmp = d_lookup(filp->f_dentry, &q); - if (!tmp) { - struct btrfs_key *newkey; - - newkey = kzalloc(sizeof(struct btrfs_key), - GFP_NOFS); - if (!newkey) - goto no_dentry; - tmp = d_alloc(filp->f_dentry, &q); - if (!tmp) { - kfree(newkey); - dput(tmp); - goto no_dentry; - } - memcpy(newkey, &location, - sizeof(struct btrfs_key)); - tmp->d_fsdata = newkey; - tmp->d_flags |= DCACHE_NEED_LOOKUP; - d_rehash(tmp); - dput(tmp); - } else { - dput(tmp); - } -no_dentry: + /* is this a reference to our own snapshot? If so * skip it. * -- cgit v1.1 From dc7fdde39e4962b1a88741f7eba2a6b3be1285d8 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Fri, 27 Apr 2012 14:31:29 -0400 Subject: Btrfs: reduce lock contention during extent insertion We're spending huge amounts of time on lock contention during end_io processing because we unconditionally assume we are overwriting an existing extent in the file for each IO. This checks to see if we are outside i_size, and if so, it uses a less expensive readonly search of the btree to look for existing extents. Signed-off-by: Chris Mason --- fs/btrfs/file.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index d83260d..53bf2d7 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -567,6 +567,7 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, int extent_type; int recow; int ret; + int modify_tree = -1; if (drop_cache) btrfs_drop_extent_cache(inode, start, end - 1, 0); @@ -575,10 +576,13 @@ int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode, if (!path) return -ENOMEM; + if (start >= BTRFS_I(inode)->disk_i_size) + modify_tree = 0; + while (1) { recow = 0; ret = btrfs_lookup_file_extent(trans, root, path, ino, - search_start, -1); + search_start, modify_tree); if (ret < 0) break; if (ret > 0 && path->slots[0] > 0 && search_start == start) { @@ -634,7 +638,8 @@ next_slot: } search_start = max(key.offset, start); - if (recow) { + if (recow || !modify_tree) { + modify_tree = -1; btrfs_release_path(path); continue; } -- cgit v1.1 From 1cc2699057bafc512137272e1e848640bad14a41 Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Mon, 23 Apr 2012 14:24:52 -0700 Subject: brcm80211: fmac: fix SDIO function 0 register r/w issue SDIO stack doesn't have a structure for function 0. The structure pointer stored in card->sdio_func[0] is actually for function 1. With current implementation the register read/write is applied to function 1. This pathch fixes the issue. Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Arend van Spriel Reviewed-by: Florian Fainelli Reviewed-by: Johannes Berg Signed-off-by: Franky Lin Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c index 4688904..758c115 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c @@ -108,9 +108,15 @@ static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev, sdio_release_host(sdfunc); } } else if (regaddr == SDIO_CCCR_ABORT) { + sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func), + GFP_KERNEL); + if (!sdfunc) + return -ENOMEM; + sdfunc->num = 0; sdio_claim_host(sdfunc); sdio_writeb(sdfunc, *byte, regaddr, &err_ret); sdio_release_host(sdfunc); + kfree(sdfunc); } else if (regaddr < 0xF0) { brcmf_dbg(ERROR, "F0 Wr:0x%02x: write disallowed\n", regaddr); err_ret = -EPERM; @@ -486,7 +492,7 @@ static int brcmf_ops_sdio_probe(struct sdio_func *func, kfree(bus_if); return -ENOMEM; } - sdiodev->func[0] = func->card->sdio_func[0]; + sdiodev->func[0] = func; sdiodev->func[1] = func; sdiodev->bus_if = bus_if; bus_if->bus_priv.sdio = sdiodev; -- cgit v1.1 From b948a85c1f26d48395de8c6c7e392f008f1be666 Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Mon, 23 Apr 2012 14:24:53 -0700 Subject: brcm80211: fmac: fix missing completion events issue dpc takes care of all data packets transmissions for sdio function 2. It is possible that it misses some completion events when the traffic is heavy or it's running on a slow cpu. A linked list is introduced to make sure dpc is invoked whenever needed. Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Arend van Spriel Signed-off-by: Franky Lin Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c | 63 +++++++++++++++++----- 1 file changed, 51 insertions(+), 12 deletions(-) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c index 2bf5dda..eb3829b 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c @@ -574,6 +574,8 @@ struct brcmf_sdio { struct task_struct *dpc_tsk; struct completion dpc_wait; + struct list_head dpc_tsklst; + spinlock_t dpc_tl_lock; struct semaphore sdsem; @@ -2594,29 +2596,58 @@ clkwait: return resched; } +static inline void brcmf_sdbrcm_adddpctsk(struct brcmf_sdio *bus) +{ + struct list_head *new_hd; + unsigned long flags; + + if (in_interrupt()) + new_hd = kzalloc(sizeof(struct list_head), GFP_ATOMIC); + else + new_hd = kzalloc(sizeof(struct list_head), GFP_KERNEL); + if (new_hd == NULL) + return; + + spin_lock_irqsave(&bus->dpc_tl_lock, flags); + list_add_tail(new_hd, &bus->dpc_tsklst); + spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); +} + static int brcmf_sdbrcm_dpc_thread(void *data) { struct brcmf_sdio *bus = (struct brcmf_sdio *) data; + struct list_head *cur_hd, *tmp_hd; + unsigned long flags; allow_signal(SIGTERM); /* Run until signal received */ while (1) { if (kthread_should_stop()) break; - if (!wait_for_completion_interruptible(&bus->dpc_wait)) { - /* Call bus dpc unless it indicated down - (then clean stop) */ - if (bus->sdiodev->bus_if->state != BRCMF_BUS_DOWN) { - if (brcmf_sdbrcm_dpc(bus)) - complete(&bus->dpc_wait); - } else { + + if (list_empty(&bus->dpc_tsklst)) + if (wait_for_completion_interruptible(&bus->dpc_wait)) + break; + + spin_lock_irqsave(&bus->dpc_tl_lock, flags); + list_for_each_safe(cur_hd, tmp_hd, &bus->dpc_tsklst) { + spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); + + if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) { /* after stopping the bus, exit thread */ brcmf_sdbrcm_bus_stop(bus->sdiodev->dev); bus->dpc_tsk = NULL; break; } - } else - break; + + if (brcmf_sdbrcm_dpc(bus)) + brcmf_sdbrcm_adddpctsk(bus); + + spin_lock_irqsave(&bus->dpc_tl_lock, flags); + list_del(cur_hd); + kfree(cur_hd); + } + spin_unlock_irqrestore(&bus->dpc_tl_lock, flags); } return 0; } @@ -2669,8 +2700,10 @@ static int brcmf_sdbrcm_bus_txdata(struct device *dev, struct sk_buff *pkt) /* Schedule DPC if needed to send queued packet(s) */ if (!bus->dpc_sched) { bus->dpc_sched = true; - if (bus->dpc_tsk) + if (bus->dpc_tsk) { + brcmf_sdbrcm_adddpctsk(bus); complete(&bus->dpc_wait); + } } return ret; @@ -3514,8 +3547,10 @@ void brcmf_sdbrcm_isr(void *arg) brcmf_dbg(ERROR, "isr w/o interrupt configured!\n"); bus->dpc_sched = true; - if (bus->dpc_tsk) + if (bus->dpc_tsk) { + brcmf_sdbrcm_adddpctsk(bus); complete(&bus->dpc_wait); + } } static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus) @@ -3559,8 +3594,10 @@ static bool brcmf_sdbrcm_bus_watchdog(struct brcmf_sdio *bus) bus->ipend = true; bus->dpc_sched = true; - if (bus->dpc_tsk) + if (bus->dpc_tsk) { + brcmf_sdbrcm_adddpctsk(bus); complete(&bus->dpc_wait); + } } } @@ -3897,6 +3934,8 @@ void *brcmf_sdbrcm_probe(u32 regsva, struct brcmf_sdio_dev *sdiodev) } /* Initialize DPC thread */ init_completion(&bus->dpc_wait); + INIT_LIST_HEAD(&bus->dpc_tsklst); + spin_lock_init(&bus->dpc_tl_lock); bus->dpc_tsk = kthread_run(brcmf_sdbrcm_dpc_thread, bus, "brcmf_dpc"); if (IS_ERR(bus->dpc_tsk)) { -- cgit v1.1 From 3708dc248946daba8802c8f31a68dca81ffc445f Mon Sep 17 00:00:00 2001 From: Jonathan Bither Date: Tue, 24 Apr 2012 05:20:15 -0400 Subject: ath5k: add missing iounmap to AHB probe removal When our driver device is removed on the AHB bus, our IO memory is never unmapped. Signed-off-by: Jonathan Bither Reviewed-by: Pavel Roskin Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath5k/ahb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/ath5k/ahb.c b/drivers/net/wireless/ath/ath5k/ahb.c index 8c50d9d..aec33cc 100644 --- a/drivers/net/wireless/ath/ath5k/ahb.c +++ b/drivers/net/wireless/ath/ath5k/ahb.c @@ -220,6 +220,7 @@ static int ath_ahb_remove(struct platform_device *pdev) } ath5k_deinit_ah(ah); + iounmap(ah->iobase); platform_set_drvdata(pdev, NULL); ieee80211_free_hw(hw); -- cgit v1.1 From 1ed2ec37b44e86eaa8e0a03b908a39c80f65ee45 Mon Sep 17 00:00:00 2001 From: Wey-Yi Guy Date: Wed, 25 Apr 2012 08:10:08 -0700 Subject: iwlwifi: use 6000G2B for 6030 device series "iwlwifi: use correct released ucode version" change the ucode api ok from 6000G2 to 6000G2B, but it shall belong to 6030 device series, not the 6005 device series. Fix it Cc: stable@vger.kernel.org #3.3+ Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-6000.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c index b1b6951..f0c9150 100644 --- a/drivers/net/wireless/iwlwifi/iwl-6000.c +++ b/drivers/net/wireless/iwlwifi/iwl-6000.c @@ -336,7 +336,7 @@ static const struct iwl_bt_params iwl6000_bt_params = { #define IWL_DEVICE_6005 \ .fw_name_pre = IWL6005_FW_PRE, \ .ucode_api_max = IWL6000G2_UCODE_API_MAX, \ - .ucode_api_ok = IWL6000G2B_UCODE_API_OK, \ + .ucode_api_ok = IWL6000G2_UCODE_API_OK, \ .ucode_api_min = IWL6000G2_UCODE_API_MIN, \ .max_inst_size = IWL60_RTC_INST_SIZE, \ .max_data_size = IWL60_RTC_DATA_SIZE, \ @@ -390,7 +390,7 @@ const struct iwl_cfg iwl6005_2agn_mow2_cfg = { #define IWL_DEVICE_6030 \ .fw_name_pre = IWL6030_FW_PRE, \ .ucode_api_max = IWL6000G2_UCODE_API_MAX, \ - .ucode_api_ok = IWL6000G2_UCODE_API_OK, \ + .ucode_api_ok = IWL6000G2B_UCODE_API_OK, \ .ucode_api_min = IWL6000G2_UCODE_API_MIN, \ .max_inst_size = IWL60_RTC_INST_SIZE, \ .max_data_size = IWL60_RTC_DATA_SIZE, \ -- cgit v1.1 From dbdedbdf4fbff3d4962a0786f37aa86dfdc48a7e Mon Sep 17 00:00:00 2001 From: Seth Forshee Date: Wed, 25 Apr 2012 17:28:00 -0500 Subject: b43: only reload config after successful initialization Commit 2a19032 (b43: reload phy and bss settings after core restarts) introduced an unconditional call to b43_op_config() at the end of b43_op_start(). When firmware fails to load this can wedge the system. There's no need to reload the configuration after a failed initialization anyway, so only make the call if initialization was successful. BugLink: http://bugs.launchpad.net/bugs/950295 Cc: Felix Fietkau Cc: Signed-off-by: Seth Forshee Signed-off-by: John W. Linville --- drivers/net/wireless/b43/main.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c index c79e663..e4d6dc2 100644 --- a/drivers/net/wireless/b43/main.c +++ b/drivers/net/wireless/b43/main.c @@ -4827,8 +4827,14 @@ static int b43_op_start(struct ieee80211_hw *hw) out_mutex_unlock: mutex_unlock(&wl->mutex); - /* reload configuration */ - b43_op_config(hw, ~0); + /* + * Configuration may have been overwritten during initialization. + * Reload the configuration, but only if initialization was + * successful. Reloading the configuration after a failed init + * may hang the system. + */ + if (!err) + b43_op_config(hw, ~0); return err; } -- cgit v1.1 From 328c32f0f85467af5a6c4c3289e168d9ad2555af Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Thu, 26 Apr 2012 23:07:43 +0300 Subject: wl1251: fix crash on remove due to premature kfree Currently SDIO glue frees it's own structure before calling wl1251_free_hw(), which in turn calls ieee80211_unregister_hw(). The later call may result in a need to communicate with the chip to stop it (as it happens now if the interface is still up before rmmod), which means calls are made back to the glue, resulting in freed memory access. Fix this by freeing glue data last. Cc: stable@vger.kernel.org # v2.6.37+ Signed-off-by: Grazvydas Ignotas Signed-off-by: John W. Linville --- drivers/net/wireless/wl1251/sdio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/wl1251/sdio.c b/drivers/net/wireless/wl1251/sdio.c index f786942..1b851f6 100644 --- a/drivers/net/wireless/wl1251/sdio.c +++ b/drivers/net/wireless/wl1251/sdio.c @@ -315,8 +315,8 @@ static void __devexit wl1251_sdio_remove(struct sdio_func *func) if (wl->irq) free_irq(wl->irq, wl); - kfree(wl_sdio); wl1251_free_hw(wl); + kfree(wl_sdio); sdio_claim_host(func); sdio_release_irq(func); -- cgit v1.1 From 4c1bcdb5a3354b250b82a67549f57ac27a3bb85f Mon Sep 17 00:00:00 2001 From: Grazvydas Ignotas Date: Thu, 26 Apr 2012 23:07:44 +0300 Subject: wl1251: fix crash on remove due to leftover work item This driver currently leaves elp_work behind when stopping, which occasionally results in data corruption because work function ends up accessing freed memory, typical symptoms of this are various worker_thread crashes. Fix it by cancelling elp_work. Cc: stable@vger.kernel.org # v2.6.37+ Signed-off-by: Grazvydas Ignotas Signed-off-by: John W. Linville --- drivers/net/wireless/wl1251/main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/wl1251/main.c b/drivers/net/wireless/wl1251/main.c index 41302c7..d1afb8e 100644 --- a/drivers/net/wireless/wl1251/main.c +++ b/drivers/net/wireless/wl1251/main.c @@ -479,6 +479,7 @@ static void wl1251_op_stop(struct ieee80211_hw *hw) cancel_work_sync(&wl->irq_work); cancel_work_sync(&wl->tx_work); cancel_work_sync(&wl->filter_work); + cancel_delayed_work_sync(&wl->elp_work); mutex_lock(&wl->mutex); -- cgit v1.1 From 7eb7ce4d2e8991aff4ecb71a81949a907ca755ac Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Thu, 26 Apr 2012 19:44:06 +0100 Subject: xen: correctly check for pending events when restoring irq flags In xen_restore_fl_direct(), xen_force_evtchn_callback() was being called even if no events were pending. This resulted in (depending on workload) about a 100 times as many xen_version hypercalls as necessary. Fix this by correcting the sense of the conditional jump. This seems to give a significant performance benefit for some workloads. There is some subtle tricksy "..since the check here is trying to check both pending and masked in a single cmpw, but I think this is correct. It will call check_events now only when the combined mask+pending word is 0x0001 (aka unmasked, pending)." (Ian) CC: stable@kernel.org Acked-by: Ian Campbell Signed-off-by: David Vrabel Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/xen-asm.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/xen/xen-asm.S b/arch/x86/xen/xen-asm.S index 79d7362..3e45aa0 100644 --- a/arch/x86/xen/xen-asm.S +++ b/arch/x86/xen/xen-asm.S @@ -96,7 +96,7 @@ ENTRY(xen_restore_fl_direct) /* check for unmasked and pending */ cmpw $0x0001, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending - jz 1f + jnz 1f 2: call check_events 1: ENDPATCH(xen_restore_fl_direct) -- cgit v1.1 From cde2e9a651b76d8db36ae94cd0febc82b637e5dd Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 27 Apr 2012 10:11:48 +0000 Subject: drop_monitor: fix sleeping in invalid context warning Eric Dumazet pointed out this warning in the drop_monitor protocol to me: [ 38.352571] BUG: sleeping function called from invalid context at kernel/mutex.c:85 [ 38.352576] in_atomic(): 1, irqs_disabled(): 0, pid: 4415, name: dropwatch [ 38.352580] Pid: 4415, comm: dropwatch Not tainted 3.4.0-rc2+ #71 [ 38.352582] Call Trace: [ 38.352592] [] ? trace_napi_poll_hit+0xd0/0xd0 [ 38.352599] [] __might_sleep+0xca/0xf0 [ 38.352606] [] mutex_lock+0x26/0x50 [ 38.352610] [] ? trace_napi_poll_hit+0xd0/0xd0 [ 38.352616] [] tracepoint_probe_register+0x29/0x90 [ 38.352621] [] set_all_monitor_traces+0x105/0x170 [ 38.352625] [] net_dm_cmd_trace+0x2a/0x40 [ 38.352630] [] genl_rcv_msg+0x21a/0x2b0 [ 38.352636] [] ? zone_statistics+0x99/0xc0 [ 38.352640] [] ? genl_rcv+0x30/0x30 [ 38.352645] [] netlink_rcv_skb+0xa9/0xd0 [ 38.352649] [] genl_rcv+0x20/0x30 [ 38.352653] [] netlink_unicast+0x1ae/0x1f0 [ 38.352658] [] netlink_sendmsg+0x2b6/0x310 [ 38.352663] [] sock_sendmsg+0x10f/0x130 [ 38.352668] [] ? move_addr_to_kernel+0x60/0xb0 [ 38.352673] [] ? verify_iovec+0x64/0xe0 [ 38.352677] [] __sys_sendmsg+0x386/0x390 [ 38.352682] [] ? handle_mm_fault+0x139/0x210 [ 38.352687] [] ? do_page_fault+0x1ec/0x4f0 [ 38.352693] [] ? set_next_entity+0x9d/0xb0 [ 38.352699] [] ? tty_ldisc_deref+0x9/0x10 [ 38.352703] [] ? pick_next_task_fair+0x63/0x140 [ 38.352708] [] sys_sendmsg+0x44/0x80 [ 38.352713] [] system_call_fastpath+0x16/0x1b It stems from holding a spinlock (trace_state_lock) while attempting to register or unregister tracepoint hooks, making in_atomic() true in this context, leading to the warning when the tracepoint calls might_sleep() while its taking a mutex. Since we only use the trace_state_lock to prevent trace protocol state races, as well as hardware stat list updates on an rcu write side, we can just convert the spinlock to a mutex to avoid this problem. Signed-off-by: Neil Horman Reported-by: Eric Dumazet CC: David Miller Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/drop_monitor.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index 5c3c81a..a221a5b 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -42,7 +42,7 @@ static void send_dm_alert(struct work_struct *unused); * netlink alerts */ static int trace_state = TRACE_OFF; -static DEFINE_SPINLOCK(trace_state_lock); +static DEFINE_MUTEX(trace_state_mutex); struct per_cpu_dm_data { struct work_struct dm_alert_work; @@ -214,7 +214,7 @@ static int set_all_monitor_traces(int state) struct dm_hw_stat_delta *new_stat = NULL; struct dm_hw_stat_delta *temp; - spin_lock(&trace_state_lock); + mutex_lock(&trace_state_mutex); if (state == trace_state) { rc = -EAGAIN; @@ -253,7 +253,7 @@ static int set_all_monitor_traces(int state) rc = -EINPROGRESS; out_unlock: - spin_unlock(&trace_state_lock); + mutex_unlock(&trace_state_mutex); return rc; } @@ -296,12 +296,12 @@ static int dropmon_net_event(struct notifier_block *ev_block, new_stat->dev = dev; new_stat->last_rx = jiffies; - spin_lock(&trace_state_lock); + mutex_lock(&trace_state_mutex); list_add_rcu(&new_stat->list, &hw_stats_list); - spin_unlock(&trace_state_lock); + mutex_unlock(&trace_state_mutex); break; case NETDEV_UNREGISTER: - spin_lock(&trace_state_lock); + mutex_lock(&trace_state_mutex); list_for_each_entry_safe(new_stat, tmp, &hw_stats_list, list) { if (new_stat->dev == dev) { new_stat->dev = NULL; @@ -312,7 +312,7 @@ static int dropmon_net_event(struct notifier_block *ev_block, } } } - spin_unlock(&trace_state_lock); + mutex_unlock(&trace_state_mutex); break; } out: -- cgit v1.1 From 3885ca785a3618593226687ced84f3f336dc3860 Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Fri, 27 Apr 2012 10:11:49 +0000 Subject: drop_monitor: Make updating data->skb smp safe Eric Dumazet pointed out to me that the drop_monitor protocol has some holes in its smp protections. Specifically, its possible to replace data->skb while its being written. This patch corrects that by making data->skb an rcu protected variable. That will prevent it from being overwritten while a tracepoint is modifying it. Signed-off-by: Neil Horman Reported-by: Eric Dumazet CC: David Miller Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/drop_monitor.c | 70 ++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 54 insertions(+), 16 deletions(-) diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index a221a5b..7592943 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -46,7 +46,7 @@ static DEFINE_MUTEX(trace_state_mutex); struct per_cpu_dm_data { struct work_struct dm_alert_work; - struct sk_buff *skb; + struct sk_buff __rcu *skb; atomic_t dm_hit_count; struct timer_list send_timer; }; @@ -73,35 +73,58 @@ static int dm_hit_limit = 64; static int dm_delay = 1; static unsigned long dm_hw_check_delta = 2*HZ; static LIST_HEAD(hw_stats_list); +static int initialized = 0; static void reset_per_cpu_data(struct per_cpu_dm_data *data) { size_t al; struct net_dm_alert_msg *msg; struct nlattr *nla; + struct sk_buff *skb; + struct sk_buff *oskb = rcu_dereference_protected(data->skb, 1); al = sizeof(struct net_dm_alert_msg); al += dm_hit_limit * sizeof(struct net_dm_drop_point); al += sizeof(struct nlattr); - data->skb = genlmsg_new(al, GFP_KERNEL); - genlmsg_put(data->skb, 0, 0, &net_drop_monitor_family, - 0, NET_DM_CMD_ALERT); - nla = nla_reserve(data->skb, NLA_UNSPEC, sizeof(struct net_dm_alert_msg)); - msg = nla_data(nla); - memset(msg, 0, al); - atomic_set(&data->dm_hit_count, dm_hit_limit); + skb = genlmsg_new(al, GFP_KERNEL); + + if (skb) { + genlmsg_put(skb, 0, 0, &net_drop_monitor_family, + 0, NET_DM_CMD_ALERT); + nla = nla_reserve(skb, NLA_UNSPEC, + sizeof(struct net_dm_alert_msg)); + msg = nla_data(nla); + memset(msg, 0, al); + } else if (initialized) + schedule_work_on(smp_processor_id(), &data->dm_alert_work); + + /* + * Don't need to lock this, since we are guaranteed to only + * run this on a single cpu at a time. + * Note also that we only update data->skb if the old and new skb + * pointers don't match. This ensures that we don't continually call + * synchornize_rcu if we repeatedly fail to alloc a new netlink message. + */ + if (skb != oskb) { + rcu_assign_pointer(data->skb, skb); + + synchronize_rcu(); + + atomic_set(&data->dm_hit_count, dm_hit_limit); + } + } static void send_dm_alert(struct work_struct *unused) { struct sk_buff *skb; - struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data); + struct per_cpu_dm_data *data = &get_cpu_var(dm_cpu_data); /* * Grab the skb we're about to send */ - skb = data->skb; + skb = rcu_dereference_protected(data->skb, 1); /* * Replace it with a new one @@ -111,8 +134,10 @@ static void send_dm_alert(struct work_struct *unused) /* * Ship it! */ - genlmsg_multicast(skb, 0, NET_DM_GRP_ALERT, GFP_KERNEL); + if (skb) + genlmsg_multicast(skb, 0, NET_DM_GRP_ALERT, GFP_KERNEL); + put_cpu_var(dm_cpu_data); } /* @@ -123,9 +148,11 @@ static void send_dm_alert(struct work_struct *unused) */ static void sched_send_work(unsigned long unused) { - struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data); + struct per_cpu_dm_data *data = &get_cpu_var(dm_cpu_data); + + schedule_work_on(smp_processor_id(), &data->dm_alert_work); - schedule_work(&data->dm_alert_work); + put_cpu_var(dm_cpu_data); } static void trace_drop_common(struct sk_buff *skb, void *location) @@ -134,9 +161,16 @@ static void trace_drop_common(struct sk_buff *skb, void *location) struct nlmsghdr *nlh; struct nlattr *nla; int i; - struct per_cpu_dm_data *data = &__get_cpu_var(dm_cpu_data); + struct sk_buff *dskb; + struct per_cpu_dm_data *data = &get_cpu_var(dm_cpu_data); + rcu_read_lock(); + dskb = rcu_dereference(data->skb); + + if (!dskb) + goto out; + if (!atomic_add_unless(&data->dm_hit_count, -1, 0)) { /* * we're already at zero, discard this hit @@ -144,7 +178,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location) goto out; } - nlh = (struct nlmsghdr *)data->skb->data; + nlh = (struct nlmsghdr *)dskb->data; nla = genlmsg_data(nlmsg_data(nlh)); msg = nla_data(nla); for (i = 0; i < msg->entries; i++) { @@ -158,7 +192,7 @@ static void trace_drop_common(struct sk_buff *skb, void *location) /* * We need to create a new entry */ - __nla_reserve_nohdr(data->skb, sizeof(struct net_dm_drop_point)); + __nla_reserve_nohdr(dskb, sizeof(struct net_dm_drop_point)); nla->nla_len += NLA_ALIGN(sizeof(struct net_dm_drop_point)); memcpy(msg->points[msg->entries].pc, &location, sizeof(void *)); msg->points[msg->entries].count = 1; @@ -170,6 +204,8 @@ static void trace_drop_common(struct sk_buff *skb, void *location) } out: + rcu_read_unlock(); + put_cpu_var(dm_cpu_data); return; } @@ -375,6 +411,8 @@ static int __init init_net_drop_monitor(void) data->send_timer.function = sched_send_work; } + initialized = 1; + goto out; out_unreg: -- cgit v1.1 From 700698e7c303f5095107c62a81872c2c3dad1702 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Fri, 27 Apr 2012 17:18:59 -0400 Subject: drm/radeon/kms: need to set up ss on DP bridges as well Makes Nutmeg DP to VGA bridges work for me. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=42490 Noticed by Jerome Glisse (after weeks of debugging). Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/atombios_crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index c5c31e0..af1054f 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -958,8 +958,8 @@ static void atombios_crtc_set_pll(struct drm_crtc *crtc, struct drm_display_mode break; } - if (radeon_encoder->active_device & - (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) { + if ((radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT | ATOM_DEVICE_DFP_SUPPORT)) || + (radeon_encoder_get_dp_bridge_encoder_id(encoder) != ENCODER_OBJECT_ID_NONE)) { struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv; struct drm_connector *connector = radeon_get_connector_for_encoder(encoder); -- cgit v1.1 From 3a69ddd6f872180b6f61fda87152b37202118fbc Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Fri, 27 Apr 2012 12:44:41 -0700 Subject: drm/i915: Set the Stencil Cache eviction policy to non-LRA mode. Clearing bit 5 of CACHE_MODE_0 is necessary to prevent GPU hangs in OpenGL programs such as Google MapsGL, Google Earth, and gzdoom when using separate stencil buffers. Without it, the GPU tries to use the LRA eviction policy, which isn't supported. This was supposed to be off by default, but seems to be on for many machines. This cannot be done in gen6_init_clock_gating with most of the other workaround bits; the render ring needs to exist. Otherwise, the register write gets dropped on the floor (one printk will show it changed, but a second printk immediately following shows the value reverts to the old one). Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=47535 Cc: stable@vger.kernel.org Cc: Rob Castle Cc: Eric Appleman Cc: aaron667@gmx.net Cc: Keith Packard Signed-off-by: Kenneth Graunke Reviewed-by: Daniel Vetter Acked-by: Daniel Vetter Signed-off-by: Dave Airlie --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_ringbuffer.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b4bb1ef..9d24d65 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -568,6 +568,7 @@ #define CM0_MASK_SHIFT 16 #define CM0_IZ_OPT_DISABLE (1<<6) #define CM0_ZR_OPT_DISABLE (1<<5) +#define CM0_STC_EVICT_DISABLE_LRA_SNB (1<<5) #define CM0_DEPTH_EVICT_DISABLE (1<<4) #define CM0_COLOR_EVICT_DISABLE (1<<3) #define CM0_DEPTH_WRITE_DISABLE (1<<1) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index f75806e..80fce51 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -401,6 +401,14 @@ static int init_render_ring(struct intel_ring_buffer *ring) if (INTEL_INFO(dev)->gen >= 6) { I915_WRITE(INSTPM, INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + + /* From the Sandybridge PRM, volume 1 part 3, page 24: + * "If this bit is set, STCunit will have LRA as replacement + * policy. [...] This bit must be reset. LRA replacement + * policy is not supported." + */ + I915_WRITE(CACHE_MODE_0, + CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT); } return ret; -- cgit v1.1 From 14904927fcef6bb881fd995b478a0d2e700c1818 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Fri, 27 Apr 2012 01:40:10 +0100 Subject: ARM: 7401/1: mm: Fix section mismatches WARNING: vmlinux.o(.text+0x111b8): Section mismatch in reference from the function arm_memory_present() to the function .init.text:memory_present() The function arm_memory_present() references the function __init memory_present(). This is often because arm_memory_present lacks a __init annotation or the annotation of memory_present is wrong. WARNING: arch/arm/mm/built-in.o(.text+0x1edc): Section mismatch in reference from the function alloc_init_pud() to the function .init.text:alloc_init_section() The function alloc_init_pud() references the function __init alloc_init_section(). This is often because alloc_init_pud lacks a __init annotation or the annotation of alloc_init_section is wrong. Signed-off-by: Stephen Boyd Signed-off-by: Russell King --- arch/arm/mm/init.c | 4 ++-- arch/arm/mm/mmu.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 595079f..8f5813b 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -293,11 +293,11 @@ EXPORT_SYMBOL(pfn_valid); #endif #ifndef CONFIG_SPARSEMEM -static void arm_memory_present(void) +static void __init arm_memory_present(void) { } #else -static void arm_memory_present(void) +static void __init arm_memory_present(void) { struct memblock_region *reg; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index b86f893..2c7cf2f 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -618,8 +618,8 @@ static void __init alloc_init_section(pud_t *pud, unsigned long addr, } } -static void alloc_init_pud(pgd_t *pgd, unsigned long addr, unsigned long end, - unsigned long phys, const struct mem_type *type) +static void __init alloc_init_pud(pgd_t *pgd, unsigned long addr, + unsigned long end, unsigned long phys, const struct mem_type *type) { pud_t *pud = pud_offset(pgd, addr); unsigned long next; -- cgit v1.1 From 6a1c53124aa161eb624ce7b1e40ade728186d34c Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 27 Apr 2012 12:45:07 +0100 Subject: ARM: 7403/1: tls: remove covert channel via TPIDRURW TPIDRURW is a user read/write register forming part of the group of thread registers in more recent versions of the ARM architecture (~v6+). Currently, the kernel does not touch this register, which allows tasks to communicate covertly by reading and writing to the register without context-switching affecting its contents. This patch clears TPIDRURW when TPIDRURO is updated via the set_tls macro, which is called directly from __switch_to. Since the current behaviour makes the register useless to userspace as far as thread pointers are concerned, simply clearing the register (rather than saving and restoring it) will not cause any problems to userspace. Cc: stable@vger.kernel.org Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/include/asm/tls.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/include/asm/tls.h b/arch/arm/include/asm/tls.h index 60843eb..73409e6 100644 --- a/arch/arm/include/asm/tls.h +++ b/arch/arm/include/asm/tls.h @@ -7,6 +7,8 @@ .macro set_tls_v6k, tp, tmp1, tmp2 mcr p15, 0, \tp, c13, c0, 3 @ set TLS register + mov \tmp1, #0 + mcr p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register .endm .macro set_tls_v6, tp, tmp1, tmp2 @@ -15,6 +17,8 @@ mov \tmp2, #0xffff0fff tst \tmp1, #HWCAP_TLS @ hardware TLS available? mcrne p15, 0, \tp, c13, c0, 3 @ yes, set TLS register + movne \tmp1, #0 + mcrne p15, 0, \tmp1, c13, c0, 2 @ clear user r/w TLS register streq \tp, [\tmp2, #-15] @ set TLS value at 0xffff0ff0 .endm -- cgit v1.1 From 6fa99b7f80b4a7ed2cf616eae393bb6d9d51ba8f Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 27 Apr 2012 12:51:43 +0100 Subject: ARM: 7405/1: kexec: call platform_cpu_kill on the killer rather than the victim When performing a kexec on an SMP system, the secondary cores are stopped by calling machine_shutdown(), which in turn issues IPIs to offline the other CPUs. Unfortunately, this isn't enough to reboot the cores into a new kernel (since they are just executing a cpu_relax loop somewhere in memory) so we make use of platform_cpu_kill, part of the CPU hotplug implementation, to place the cores somewhere safe. This function expects to be called on the killing CPU for each core that it takes out. This patch moves the platform_cpu_kill callback out of the IPI handler and into smp_send_stop, therefore ensuring that it executes on the killing CPU rather than on the victim, matching what the hotplug code requires. Cc: stable@vger.kernel.org Reported-by: Russell King Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 28 +++++++++++++++++----------- 1 file changed, 17 insertions(+), 11 deletions(-) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index addbbe8..f6a4d32 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -510,10 +510,6 @@ static void ipi_cpu_stop(unsigned int cpu) local_fiq_disable(); local_irq_disable(); -#ifdef CONFIG_HOTPLUG_CPU - platform_cpu_kill(cpu); -#endif - while (1) cpu_relax(); } @@ -576,17 +572,25 @@ void smp_send_reschedule(int cpu) smp_cross_call(cpumask_of(cpu), IPI_RESCHEDULE); } +#ifdef CONFIG_HOTPLUG_CPU +static void smp_kill_cpus(cpumask_t *mask) +{ + unsigned int cpu; + for_each_cpu(cpu, mask) + platform_cpu_kill(cpu); +} +#else +static void smp_kill_cpus(cpumask_t *mask) { } +#endif + void smp_send_stop(void) { unsigned long timeout; + struct cpumask mask; - if (num_online_cpus() > 1) { - struct cpumask mask; - cpumask_copy(&mask, cpu_online_mask); - cpumask_clear_cpu(smp_processor_id(), &mask); - - smp_cross_call(&mask, IPI_CPU_STOP); - } + cpumask_copy(&mask, cpu_online_mask); + cpumask_clear_cpu(smp_processor_id(), &mask); + smp_cross_call(&mask, IPI_CPU_STOP); /* Wait up to one second for other CPUs to stop */ timeout = USEC_PER_SEC; @@ -595,6 +599,8 @@ void smp_send_stop(void) if (num_online_cpus() > 1) pr_warning("SMP: failed to stop secondary CPUs\n"); + + smp_kill_cpus(&mask); } /* -- cgit v1.1 From 5e7371ded05adfcfcee44a8bc070bfc37979b8f2 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 27 Apr 2012 12:56:24 +0100 Subject: ARM: 7406/1: hotplug: copy the affinity mask when forcefully migrating IRQs When a CPU is hotplugged off, we migrate any IRQs currently affine to it away and onto another online CPU by calling the irq_set_affinity function of the relevant interrupt controller chip. This function returns either IRQ_SET_MASK_OK or IRQ_SET_MASK_OK_NOCOPY, to indicate whether irq_data.affinity was updated. If we are forcefully migrating an interrupt (because the affinity mask no longer identifies any online CPUs) then we should update the IRQ affinity mask to reflect the new CPU set. Failure to do so can potentially leave /proc/irq/n/smp_affinity identifying only offline CPUs, which may confuse userspace IRQ balancing daemons. This patch updates migrate_one_irq to copy the affinity mask when the interrupt chip returns IRQ_SET_MASK_OK after forcefully changing the affinity of an interrupt. Cc: stable@vger.kernel.org Reported-by: Leif Lindholm Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/irq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c index 71ccdbf..8349d4e97 100644 --- a/arch/arm/kernel/irq.c +++ b/arch/arm/kernel/irq.c @@ -155,10 +155,10 @@ static bool migrate_one_irq(struct irq_desc *desc) } c = irq_data_get_irq_chip(d); - if (c->irq_set_affinity) - c->irq_set_affinity(d, affinity, true); - else + if (!c->irq_set_affinity) pr_debug("IRQ%u: unable to set affinity\n", d->irq); + else if (c->irq_set_affinity(d, affinity, true) == IRQ_SET_MASK_OK && ret) + cpumask_copy(d->affinity, affinity); return ret; } -- cgit v1.1 From fcbf94b9dedd2ce08e798a99aafc94fec8668161 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 28 Apr 2012 08:29:56 -0700 Subject: Revert "autofs: work around unhappy compat problem on x86-64" This reverts commit a32744d4abae24572eff7269bc17895c41bd0085. While that commit was technically the right thing to do, and made the x86-64 compat mode work identically to native 32-bit mode (and thus fixing the problem with a 32-bit systemd install on a 64-bit kernel), it turns out that the automount binaries had workarounds for this compat problem. Now, the workarounds are disgusting: doing an "uname()" to find out the architecture of the kernel, and then comparing it for the 64-bit cases and fixing up the size of the read() in automount for those. And they were confused: it's not actually a generic 64-bit issue at all, it's very much tied to just x86-64, which has different alignment for an 'u64' in 64-bit mode than in 32-bit mode. But the end result is that fixing the compat layer actually breaks the case of a 32-bit automount on a x86-64 kernel. There are various approaches to fix this (including just doing a "strcmp()" on current->comm and comparing it to "automount"), but I think that I will do the one that teaches pipes about a special "packet mode", which will allow user space to not have to care too deeply about the padding at the end of the autofs packet. That change will make the compat workaround unnecessary, so let's revert it first, and get automount working again in compat mode. The packetized pipes will then fix autofs for systemd. Reported-and-requested-by: Michael Tokarev Cc: Ian Kent Cc: stable@kernel.org # for 3.3 Signed-off-by: Linus Torvalds --- fs/autofs4/autofs_i.h | 1 - fs/autofs4/dev-ioctl.c | 1 - fs/autofs4/inode.c | 2 -- fs/autofs4/waitq.c | 22 +++------------------- 4 files changed, 3 insertions(+), 23 deletions(-) diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h index eb1cc92..d8d8e7b 100644 --- a/fs/autofs4/autofs_i.h +++ b/fs/autofs4/autofs_i.h @@ -110,7 +110,6 @@ struct autofs_sb_info { int sub_version; int min_proto; int max_proto; - int compat_daemon; unsigned long exp_timeout; unsigned int type; int reghost_enabled; diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 9dacb85..3dfd615 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -385,7 +385,6 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, sbi->pipefd = pipefd; sbi->pipe = pipe; sbi->catatonic = 0; - sbi->compat_daemon = is_compat_task(); } out: mutex_unlock(&sbi->wq_mutex); diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index d8dc002..14c7bc0 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -19,7 +19,6 @@ #include #include #include -#include #include "autofs_i.h" #include @@ -225,7 +224,6 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) set_autofs_type_indirect(&sbi->type); sbi->min_proto = 0; sbi->max_proto = 0; - sbi->compat_daemon = is_compat_task(); mutex_init(&sbi->wq_mutex); mutex_init(&sbi->pipe_mutex); spin_lock_init(&sbi->fs_lock); diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c index 9c098db..da8876d 100644 --- a/fs/autofs4/waitq.c +++ b/fs/autofs4/waitq.c @@ -91,24 +91,7 @@ static int autofs4_write(struct autofs_sb_info *sbi, return (bytes > 0); } - -/* - * The autofs_v5 packet was misdesigned. - * - * The packets are identical on x86-32 and x86-64, but have different - * alignment. Which means that 'sizeof()' will give different results. - * Fix it up for the case of running 32-bit user mode on a 64-bit kernel. - */ -static noinline size_t autofs_v5_packet_size(struct autofs_sb_info *sbi) -{ - size_t pktsz = sizeof(struct autofs_v5_packet); -#if defined(CONFIG_X86_64) && defined(CONFIG_COMPAT) - if (sbi->compat_daemon > 0) - pktsz -= 4; -#endif - return pktsz; -} - + static void autofs4_notify_daemon(struct autofs_sb_info *sbi, struct autofs_wait_queue *wq, int type) @@ -172,7 +155,8 @@ static void autofs4_notify_daemon(struct autofs_sb_info *sbi, { struct autofs_v5_packet *packet = &pkt.v5_pkt.v5_packet; - pktsz = autofs_v5_packet_size(sbi); + pktsz = sizeof(*packet); + packet->wait_queue_token = wq->wait_queue_token; packet->len = wq->name.len; memcpy(packet->name, wq->name.name, wq->name.len); -- cgit v1.1 From 71dfc5fa5160bb73752f0731539404569a77faca Mon Sep 17 00:00:00 2001 From: Stanislav Kinsbursky Date: Sat, 28 Apr 2012 19:32:21 +0400 Subject: NFS: get module in idmap PipeFS notifier callback This is bug fix. Notifier callback is called from SUNRPC module. So before dereferencing NFS module we have to make sure, that it's alive. Signed-off-by: Stanislav Kinsbursky Signed-off-by: Trond Myklebust --- fs/nfs/idmap.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c index b7f348b..ba3019f 100644 --- a/fs/nfs/idmap.c +++ b/fs/nfs/idmap.c @@ -554,12 +554,16 @@ static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, struct nfs_client *clp; int error = 0; + if (!try_module_get(THIS_MODULE)) + return 0; + while ((clp = nfs_get_client_for_event(sb->s_fs_info, event))) { error = __rpc_pipefs_event(clp, event, sb); nfs_put_client(clp); if (error) break; } + module_put(THIS_MODULE); return error; } -- cgit v1.1 From 9883035ae7edef3ec62ad215611cb8e17d6a1a5d Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 29 Apr 2012 13:12:42 -0700 Subject: pipes: add a "packetized pipe" mode for writing The actual internal pipe implementation is already really about individual packets (called "pipe buffers"), and this simply exposes that as a special packetized mode. When we are in the packetized mode (marked by O_DIRECT as suggested by Alan Cox), a write() on a pipe will not merge the new data with previous writes, so each write will get a pipe buffer of its own. The pipe buffer is then marked with the PIPE_BUF_FLAG_PACKET flag, which in turn will tell the reader side to break the read at that boundary (and throw away any partial packet contents that do not fit in the read buffer). End result: as long as you do writes less than PIPE_BUF in size (so that the pipe doesn't have to split them up), you can now treat the pipe as a packet interface, where each read() system call will read one packet at a time. You can just use a sufficiently big read buffer (PIPE_BUF is sufficient, since bigger than that doesn't guarantee atomicity anyway), and the return value of the read() will naturally give you the size of the packet. NOTE! We do not support zero-sized packets, and zero-sized reads and writes to a pipe continue to be no-ops. Also note that big packets will currently be split at write time, but that the size at which that happens is not really specified (except that it's bigger than PIPE_BUF). Currently that limit is the system page size, but we might want to explicitly support bigger packets some day. The main user for this is going to be the autofs packet interface, allowing us to stop having to care so deeply about exact packet sizes (which have had bugs with 32/64-bit compatibility modes). But user space can create packetized pipes with "pipe2(fd, O_DIRECT)", which will fail with an EINVAL on kernels that do not support this interface. Tested-by: Michael Tokarev Cc: Alan Cox Cc: David Miller Cc: Ian Kent Cc: Thomas Meyer Cc: stable@kernel.org # needed for systemd/autofs interaction fix Signed-off-by: Linus Torvalds --- fs/pipe.c | 31 +++++++++++++++++++++++++++++-- include/linux/pipe_fs_i.h | 1 + 2 files changed, 30 insertions(+), 2 deletions(-) diff --git a/fs/pipe.c b/fs/pipe.c index 25feaa3..fec5e4a 100644 --- a/fs/pipe.c +++ b/fs/pipe.c @@ -346,6 +346,16 @@ static const struct pipe_buf_operations anon_pipe_buf_ops = { .get = generic_pipe_buf_get, }; +static const struct pipe_buf_operations packet_pipe_buf_ops = { + .can_merge = 0, + .map = generic_pipe_buf_map, + .unmap = generic_pipe_buf_unmap, + .confirm = generic_pipe_buf_confirm, + .release = anon_pipe_buf_release, + .steal = generic_pipe_buf_steal, + .get = generic_pipe_buf_get, +}; + static ssize_t pipe_read(struct kiocb *iocb, const struct iovec *_iov, unsigned long nr_segs, loff_t pos) @@ -407,6 +417,13 @@ redo: ret += chars; buf->offset += chars; buf->len -= chars; + + /* Was it a packet buffer? Clean up and exit */ + if (buf->flags & PIPE_BUF_FLAG_PACKET) { + total_len = chars; + buf->len = 0; + } + if (!buf->len) { buf->ops = NULL; ops->release(pipe, buf); @@ -459,6 +476,11 @@ redo: return ret; } +static inline int is_packetized(struct file *file) +{ + return (file->f_flags & O_DIRECT) != 0; +} + static ssize_t pipe_write(struct kiocb *iocb, const struct iovec *_iov, unsigned long nr_segs, loff_t ppos) @@ -593,6 +615,11 @@ redo2: buf->ops = &anon_pipe_buf_ops; buf->offset = 0; buf->len = chars; + buf->flags = 0; + if (is_packetized(filp)) { + buf->ops = &packet_pipe_buf_ops; + buf->flags = PIPE_BUF_FLAG_PACKET; + } pipe->nrbufs = ++bufs; pipe->tmp_page = NULL; @@ -1013,7 +1040,7 @@ struct file *create_write_pipe(int flags) goto err_dentry; f->f_mapping = inode->i_mapping; - f->f_flags = O_WRONLY | (flags & O_NONBLOCK); + f->f_flags = O_WRONLY | (flags & (O_NONBLOCK | O_DIRECT)); f->f_version = 0; return f; @@ -1057,7 +1084,7 @@ int do_pipe_flags(int *fd, int flags) int error; int fdw, fdr; - if (flags & ~(O_CLOEXEC | O_NONBLOCK)) + if (flags & ~(O_CLOEXEC | O_NONBLOCK | O_DIRECT)) return -EINVAL; fw = create_write_pipe(flags); diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h index 6d626ff..e1ac1ce 100644 --- a/include/linux/pipe_fs_i.h +++ b/include/linux/pipe_fs_i.h @@ -6,6 +6,7 @@ #define PIPE_BUF_FLAG_LRU 0x01 /* page is on the LRU */ #define PIPE_BUF_FLAG_ATOMIC 0x02 /* was atomically mapped */ #define PIPE_BUF_FLAG_GIFT 0x04 /* page is a gift */ +#define PIPE_BUF_FLAG_PACKET 0x08 /* read() as a packet */ /** * struct pipe_buffer - a linux kernel pipe buffer -- cgit v1.1 From 26e0f90fded422f309deb6169dfbccb204435698 Mon Sep 17 00:00:00 2001 From: Marcos Paulo de Souza Date: Sun, 29 Apr 2012 22:29:30 +0200 Subject: PM / Freezer / Docs: Update documentation about freezing of tasks The file Documentation/power/freezing-of-tasks.txt was still referencing the TIF_FREEZE flag, that was removed by the commit d88e4cb67197d007fb778d62fe17360e970d5bfa(freezer: remove now unused TIF_FREEZE). This patch removes all the references of TIF_FREEZE that were left behind. Signed-off-by: Marcos Paulo de Souza Signed-off-by: Srivatsa S. Bhat Signed-off-by: Rafael J. Wysocki --- Documentation/power/freezing-of-tasks.txt | 37 ++++++++++++++++--------------- 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/Documentation/power/freezing-of-tasks.txt b/Documentation/power/freezing-of-tasks.txt index ec715cd..6ec291e 100644 --- a/Documentation/power/freezing-of-tasks.txt +++ b/Documentation/power/freezing-of-tasks.txt @@ -9,7 +9,7 @@ architectures). II. How does it work? -There are four per-task flags used for that, PF_NOFREEZE, PF_FROZEN, TIF_FREEZE +There are three per-task flags used for that, PF_NOFREEZE, PF_FROZEN and PF_FREEZER_SKIP (the last one is auxiliary). The tasks that have PF_NOFREEZE unset (all user space processes and some kernel threads) are regarded as 'freezable' and treated in a special way before the system enters a @@ -17,30 +17,31 @@ suspend state as well as before a hibernation image is created (in what follows we only consider hibernation, but the description also applies to suspend). Namely, as the first step of the hibernation procedure the function -freeze_processes() (defined in kernel/power/process.c) is called. It executes -try_to_freeze_tasks() that sets TIF_FREEZE for all of the freezable tasks and -either wakes them up, if they are kernel threads, or sends fake signals to them, -if they are user space processes. A task that has TIF_FREEZE set, should react -to it by calling the function called __refrigerator() (defined in -kernel/freezer.c), which sets the task's PF_FROZEN flag, changes its state -to TASK_UNINTERRUPTIBLE and makes it loop until PF_FROZEN is cleared for it. -Then, we say that the task is 'frozen' and therefore the set of functions -handling this mechanism is referred to as 'the freezer' (these functions are -defined in kernel/power/process.c, kernel/freezer.c & include/linux/freezer.h). -User space processes are generally frozen before kernel threads. +freeze_processes() (defined in kernel/power/process.c) is called. A system-wide +variable system_freezing_cnt (as opposed to a per-task flag) is used to indicate +whether the system is to undergo a freezing operation. And freeze_processes() +sets this variable. After this, it executes try_to_freeze_tasks() that sends a +fake signal to all user space processes, and wakes up all the kernel threads. +All freezable tasks must react to that by calling try_to_freeze(), which +results in a call to __refrigerator() (defined in kernel/freezer.c), which sets +the task's PF_FROZEN flag, changes its state to TASK_UNINTERRUPTIBLE and makes +it loop until PF_FROZEN is cleared for it. Then, we say that the task is +'frozen' and therefore the set of functions handling this mechanism is referred +to as 'the freezer' (these functions are defined in kernel/power/process.c, +kernel/freezer.c & include/linux/freezer.h). User space processes are generally +frozen before kernel threads. __refrigerator() must not be called directly. Instead, use the try_to_freeze() function (defined in include/linux/freezer.h), that checks -the task's TIF_FREEZE flag and makes the task enter __refrigerator() if the -flag is set. +if the task is to be frozen and makes the task enter __refrigerator(). For user space processes try_to_freeze() is called automatically from the signal-handling code, but the freezable kernel threads need to call it explicitly in suitable places or use the wait_event_freezable() or wait_event_freezable_timeout() macros (defined in include/linux/freezer.h) -that combine interruptible sleep with checking if TIF_FREEZE is set and calling -try_to_freeze(). The main loop of a freezable kernel thread may look like the -following one: +that combine interruptible sleep with checking if the task is to be frozen and +calling try_to_freeze(). The main loop of a freezable kernel thread may look +like the following one: set_freezable(); do { @@ -53,7 +54,7 @@ following one: (from drivers/usb/core/hub.c::hub_thread()). If a freezable kernel thread fails to call try_to_freeze() after the freezer has -set TIF_FREEZE for it, the freezing of tasks will fail and the entire +initiated a freezing operation, the freezing of tasks will fail and the entire hibernation operation will be cancelled. For this reason, freezable kernel threads must call try_to_freeze() somewhere or use one of the wait_event_freezable() and wait_event_freezable_timeout() macros. -- cgit v1.1 From 64f371bc3107e69efce563a3d0f0e6880de0d537 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 29 Apr 2012 13:30:08 -0700 Subject: autofs: make the autofsv5 packet file descriptor use a packetized pipe The autofs packet size has had a very unfortunate size problem on x86: because the alignment of 'u64' differs in 32-bit and 64-bit modes, and because the packet data was not 8-byte aligned, the size of the autofsv5 packet structure differed between 32-bit and 64-bit modes despite looking otherwise identical (300 vs 304 bytes respectively). We first fixed that up by making the 64-bit compat mode know about this problem in commit a32744d4abae ("autofs: work around unhappy compat problem on x86-64"), and that made a 32-bit 'systemd' work happily on a 64-bit kernel because everything then worked the same way as on a 32-bit kernel. But it turned out that 'automount' had actually known and worked around this problem in user space, so fixing the kernel to do the proper 32-bit compatibility handling actually *broke* 32-bit automount on a 64-bit kernel, because it knew that the packet sizes were wrong and expected those incorrect sizes. As a result, we ended up reverting that compatibility mode fix, and thus breaking systemd again, in commit fcbf94b9dedd. With both automount and systemd doing a single read() system call, and verifying that they get *exactly* the size they expect but using different sizes, it seemed that fixing one of them inevitably seemed to break the other. At one point, a patch I seriously considered applying from Michael Tokarev did a "strcmp()" to see if it was automount that was doing the operation. Ugly, ugly. However, a prettier solution exists now thanks to the packetized pipe mode. By marking the communication pipe as being packetized (by simply setting the O_DIRECT flag), we can always just write the bigger packet size, and if user-space does a smaller read, it will just get that partial end result and the extra alignment padding will simply be thrown away. This makes both automount and systemd happy, since they now get the size they asked for, and the kernel side of autofs simply no longer needs to care - it could pad out the packet arbitrarily. Of course, if there is some *other* user of autofs (please, please, please tell me it ain't so - and we haven't heard of any) that tries to read the packets with multiple writes, that other user will now be broken - the whole point of the packetized mode is that one system call gets exactly one packet, and you cannot read a packet in pieces. Tested-by: Michael Tokarev Cc: Alan Cox Cc: David Miller Cc: Ian Kent Cc: Thomas Meyer Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- fs/autofs4/autofs_i.h | 11 +++++++++++ fs/autofs4/dev-ioctl.c | 2 +- fs/autofs4/inode.c | 2 +- 3 files changed, 13 insertions(+), 2 deletions(-) diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h index d8d8e7b..908e184 100644 --- a/fs/autofs4/autofs_i.h +++ b/fs/autofs4/autofs_i.h @@ -269,6 +269,17 @@ int autofs4_fill_super(struct super_block *, void *, int); struct autofs_info *autofs4_new_ino(struct autofs_sb_info *); void autofs4_clean_ino(struct autofs_info *); +static inline int autofs_prepare_pipe(struct file *pipe) +{ + if (!pipe->f_op || !pipe->f_op->write) + return -EINVAL; + if (!S_ISFIFO(pipe->f_dentry->d_inode->i_mode)) + return -EINVAL; + /* We want a packet pipe */ + pipe->f_flags |= O_DIRECT; + return 0; +} + /* Queue management functions */ int autofs4_wait(struct autofs_sb_info *,struct dentry *, enum autofs_notify); diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c index 3dfd615..aa9103f 100644 --- a/fs/autofs4/dev-ioctl.c +++ b/fs/autofs4/dev-ioctl.c @@ -376,7 +376,7 @@ static int autofs_dev_ioctl_setpipefd(struct file *fp, err = -EBADF; goto out; } - if (!pipe->f_op || !pipe->f_op->write) { + if (autofs_prepare_pipe(pipe) < 0) { err = -EPIPE; fput(pipe); goto out; diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index 14c7bc0..6e488eb 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -290,7 +290,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) printk("autofs: could not open pipe file descriptor\n"); goto fail_dput; } - if (!pipe->f_op || !pipe->f_op->write) + if (autofs_prepare_pipe(pipe) < 0) goto fail_fput; sbi->pipe = pipe; sbi->pipefd = pipefd; -- cgit v1.1 From 69964ea4c7b68c9399f7977aa5b9aa6539a6a98a Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 29 Apr 2012 15:19:10 -0700 Subject: Linux 3.4-rc5 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index afc868e..a06ee9f 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 4 SUBLEVEL = 0 -EXTRAVERSION = -rc4 +EXTRAVERSION = -rc5 NAME = Saber-toothed Squirrel # *DOCUMENTATION* -- cgit v1.1 From 8751ed14dcdd692733072966bf97b6b8c21ccaad Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 23 Apr 2012 12:30:01 +0000 Subject: powerpc/8xx: Fix NR_IRQ bugs and refactor 8xx interrupt controller The mpc8xx driver uses a reference to NR_IRQS that is buggy. It uses NR_IRQs for the array size of the ppc_cached_irq_mask bitmap, but NR_IRQs could be smaller than the number of hardware irqs that ppc_cached_irq_mask tracks. Also, while fixing that problem, it became apparent that the interrupt controller only supports 32 interrupt numbers, but it is written as if it supports multiple register banks which is more complicated. This patch pulls out the buggy reference to NR_IRQs and fixes the size of the ppc_cached_irq_mask to match the number of HW irqs. It also drops the now-unnecessary code since ppc_cached_irq_mask is no longer an array. Signed-off-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/sysdev/mpc8xx_pic.c | 61 +++++++++++++--------------------------- 1 file changed, 20 insertions(+), 41 deletions(-) diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c index d5f5416..b724622 100644 --- a/arch/powerpc/sysdev/mpc8xx_pic.c +++ b/arch/powerpc/sysdev/mpc8xx_pic.c @@ -18,69 +18,45 @@ extern int cpm_get_irq(struct pt_regs *regs); static struct irq_domain *mpc8xx_pic_host; -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) -static unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; +static unsigned long mpc8xx_cached_irq_mask; static sysconf8xx_t __iomem *siu_reg; -int cpm_get_irq(struct pt_regs *regs); +static inline unsigned long mpc8xx_irqd_to_bit(struct irq_data *d) +{ + return 0x80000000 >> irqd_to_hwirq(d); +} static void mpc8xx_unmask_irq(struct irq_data *d) { - int bit, word; - unsigned int irq_nr = (unsigned int)irqd_to_hwirq(d); - - bit = irq_nr & 0x1f; - word = irq_nr >> 5; - - ppc_cached_irq_mask[word] |= (1 << (31-bit)); - out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]); + mpc8xx_cached_irq_mask |= mpc8xx_irqd_to_bit(d); + out_be32(&siu_reg->sc_simask, mpc8xx_cached_irq_mask); } static void mpc8xx_mask_irq(struct irq_data *d) { - int bit, word; - unsigned int irq_nr = (unsigned int)irqd_to_hwirq(d); - - bit = irq_nr & 0x1f; - word = irq_nr >> 5; - - ppc_cached_irq_mask[word] &= ~(1 << (31-bit)); - out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]); + mpc8xx_cached_irq_mask &= ~mpc8xx_irqd_to_bit(d); + out_be32(&siu_reg->sc_simask, mpc8xx_cached_irq_mask); } static void mpc8xx_ack(struct irq_data *d) { - int bit; - unsigned int irq_nr = (unsigned int)irqd_to_hwirq(d); - - bit = irq_nr & 0x1f; - out_be32(&siu_reg->sc_sipend, 1 << (31-bit)); + out_be32(&siu_reg->sc_sipend, mpc8xx_irqd_to_bit(d)); } static void mpc8xx_end_irq(struct irq_data *d) { - int bit, word; - unsigned int irq_nr = (unsigned int)irqd_to_hwirq(d); - - bit = irq_nr & 0x1f; - word = irq_nr >> 5; - - ppc_cached_irq_mask[word] |= (1 << (31-bit)); - out_be32(&siu_reg->sc_simask, ppc_cached_irq_mask[word]); + mpc8xx_cached_irq_mask |= mpc8xx_irqd_to_bit(d); + out_be32(&siu_reg->sc_simask, mpc8xx_cached_irq_mask); } static int mpc8xx_set_irq_type(struct irq_data *d, unsigned int flow_type) { - if (flow_type & IRQ_TYPE_EDGE_FALLING) { - irq_hw_number_t hw = (unsigned int)irqd_to_hwirq(d); + /* only external IRQ senses are programmable */ + if ((flow_type & IRQ_TYPE_EDGE_FALLING) && !(irqd_to_hwirq(d) & 1)) { unsigned int siel = in_be32(&siu_reg->sc_siel); - - /* only external IRQ senses are programmable */ - if ((hw & 1) == 0) { - siel |= (0x80000000 >> hw); - out_be32(&siu_reg->sc_siel, siel); - __irq_set_handler_locked(d->irq, handle_edge_irq); - } + siel |= mpc8xx_irqd_to_bit(d); + out_be32(&siu_reg->sc_siel, siel); + __irq_set_handler_locked(d->irq, handle_edge_irq); } return 0; } @@ -132,6 +108,9 @@ static int mpc8xx_pic_host_xlate(struct irq_domain *h, struct device_node *ct, IRQ_TYPE_EDGE_FALLING, }; + if (intspec[0] > 0x1f) + return 0; + *out_hwirq = intspec[0]; if (intsize > 1 && intspec[1] < 4) *out_flags = map_pic_senses[intspec[1]]; -- cgit v1.1 From 4013369f3782af9a488e37c2b603f1dcf008ea76 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Mon, 23 Apr 2012 12:30:02 +0000 Subject: powerpc/irqdomain: Fix broken NR_IRQ references The switch from using irq_map to irq_alloc_desc*() for managing irq number allocations introduced new bugs in some of the powerpc interrupt code. Several functions rely on the value of NR_IRQS to determine the maximum irq number that could get allocated. However, with sparse_irq and using irq_alloc_desc*() the maximum possible irq number is now specified with 'nr_irqs' which may be a number larger than NR_IRQS. This has caused breakage on powermac when CONFIG_NR_IRQS is set to 32. This patch removes most of the direct references to NR_IRQS in the powerpc code and replaces them with either a nr_irqs reference or by using the common for_each_irq_desc() macro. The powerpc-specific for_each_irq() macro is removed at the same time. Also, the Cell axon_msi driver is refactored to remove the global build assumption on the size of NR_IRQS and instead add a limit to the maximum irq number when calling irq_domain_add_nomap(). Signed-off-by: Grant Likely Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/irq.h | 4 ---- arch/powerpc/kernel/irq.c | 6 +----- arch/powerpc/kernel/machine_kexec.c | 7 ++----- arch/powerpc/platforms/cell/axon_msi.c | 8 +++----- arch/powerpc/platforms/cell/beat_interrupt.c | 2 +- arch/powerpc/platforms/powermac/pic.c | 6 +++--- arch/powerpc/sysdev/cpm2_pic.c | 3 +-- arch/powerpc/sysdev/xics/xics-common.c | 7 +++---- 8 files changed, 14 insertions(+), 29 deletions(-) diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h index e648af9..0e40843 100644 --- a/arch/powerpc/include/asm/irq.h +++ b/arch/powerpc/include/asm/irq.h @@ -18,10 +18,6 @@ #include -/* Define a way to iterate across irqs. */ -#define for_each_irq(i) \ - for ((i) = 0; (i) < NR_IRQS; ++(i)) - extern atomic_t ppc_n_lost_interrupts; /* This number is used when no interrupt has been assigned */ diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 5ec1b23..43eb74f 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -330,14 +330,10 @@ void migrate_irqs(void) alloc_cpumask_var(&mask, GFP_KERNEL); - for_each_irq(irq) { + for_each_irq_desc(irq, desc) { struct irq_data *data; struct irq_chip *chip; - desc = irq_to_desc(irq); - if (!desc) - continue; - data = irq_desc_get_irq_data(desc); if (irqd_is_per_cpu(data)) continue; diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index c957b12..5df7777 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -23,14 +23,11 @@ void machine_kexec_mask_interrupts(void) { unsigned int i; + struct irq_desc *desc; - for_each_irq(i) { - struct irq_desc *desc = irq_to_desc(i); + for_each_irq_desc(i, desc) { struct irq_chip *chip; - if (!desc) - continue; - chip = irq_desc_get_chip(desc); if (!chip) continue; diff --git a/arch/powerpc/platforms/cell/axon_msi.c b/arch/powerpc/platforms/cell/axon_msi.c index d09f3e8..85825b5 100644 --- a/arch/powerpc/platforms/cell/axon_msi.c +++ b/arch/powerpc/platforms/cell/axon_msi.c @@ -114,7 +114,7 @@ static void axon_msi_cascade(unsigned int irq, struct irq_desc *desc) pr_devel("axon_msi: woff %x roff %x msi %x\n", write_offset, msic->read_offset, msi); - if (msi < NR_IRQS && irq_get_chip_data(msi) == msic) { + if (msi < nr_irqs && irq_get_chip_data(msi) == msic) { generic_handle_irq(msi); msic->fifo_virt[idx] = cpu_to_le32(0xffffffff); } else { @@ -276,9 +276,6 @@ static int axon_msi_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) if (rc) return rc; - /* We rely on being able to stash a virq in a u16 */ - BUILD_BUG_ON(NR_IRQS > 65536); - list_for_each_entry(entry, &dev->msi_list, list) { virq = irq_create_direct_mapping(msic->irq_domain); if (virq == NO_IRQ) { @@ -392,7 +389,8 @@ static int axon_msi_probe(struct platform_device *device) } memset(msic->fifo_virt, 0xff, MSIC_FIFO_SIZE_BYTES); - msic->irq_domain = irq_domain_add_nomap(dn, 0, &msic_host_ops, msic); + /* We rely on being able to stash a virq in a u16, so limit irqs to < 65536 */ + msic->irq_domain = irq_domain_add_nomap(dn, 65536, &msic_host_ops, msic); if (!msic->irq_domain) { printk(KERN_ERR "axon_msi: couldn't allocate irq_domain for %s\n", dn->full_name); diff --git a/arch/powerpc/platforms/cell/beat_interrupt.c b/arch/powerpc/platforms/cell/beat_interrupt.c index f9a48af..8c6dc42 100644 --- a/arch/powerpc/platforms/cell/beat_interrupt.c +++ b/arch/powerpc/platforms/cell/beat_interrupt.c @@ -248,6 +248,6 @@ void beatic_deinit_IRQ(void) { int i; - for (i = 1; i < NR_IRQS; i++) + for (i = 1; i < nr_irqs; i++) beat_destruct_irq_plug(i); } diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c index 66ad93d..c4e6305 100644 --- a/arch/powerpc/platforms/powermac/pic.c +++ b/arch/powerpc/platforms/powermac/pic.c @@ -57,9 +57,9 @@ static int max_real_irqs; static DEFINE_RAW_SPINLOCK(pmac_pic_lock); -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) -static unsigned long ppc_lost_interrupts[NR_MASK_WORDS]; -static unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; +/* The max irq number this driver deals with is 128; see max_irqs */ +static DECLARE_BITMAP(ppc_lost_interrupts, 128); +static DECLARE_BITMAP(ppc_cached_irq_mask, 128); static int pmac_irq_cascade = -1; static struct irq_domain *pmac_pic_host; diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c index d3be961..10386b6 100644 --- a/arch/powerpc/sysdev/cpm2_pic.c +++ b/arch/powerpc/sysdev/cpm2_pic.c @@ -51,8 +51,7 @@ static intctl_cpm2_t __iomem *cpm2_intctl; static struct irq_domain *cpm2_pic_host; -#define NR_MASK_WORDS ((NR_IRQS + 31) / 32) -static unsigned long ppc_cached_irq_mask[NR_MASK_WORDS]; +static unsigned long ppc_cached_irq_mask[2]; /* 2 32-bit registers */ static const u_char irq_to_siureg[] = { 1, 1, 1, 1, 1, 1, 1, 1, diff --git a/arch/powerpc/sysdev/xics/xics-common.c b/arch/powerpc/sysdev/xics/xics-common.c index ea5e204..cd1d18d 100644 --- a/arch/powerpc/sysdev/xics/xics-common.c +++ b/arch/powerpc/sysdev/xics/xics-common.c @@ -188,6 +188,7 @@ void xics_migrate_irqs_away(void) { int cpu = smp_processor_id(), hw_cpu = hard_smp_processor_id(); unsigned int irq, virq; + struct irq_desc *desc; /* If we used to be the default server, move to the new "boot_cpuid" */ if (hw_cpu == xics_default_server) @@ -202,8 +203,7 @@ void xics_migrate_irqs_away(void) /* Allow IPIs again... */ icp_ops->set_priority(DEFAULT_PRIORITY); - for_each_irq(virq) { - struct irq_desc *desc; + for_each_irq_desc(virq, desc) { struct irq_chip *chip; long server; unsigned long flags; @@ -212,9 +212,8 @@ void xics_migrate_irqs_away(void) /* We can't set affinity on ISA interrupts */ if (virq < NUM_ISA_INTERRUPTS) continue; - desc = irq_to_desc(virq); /* We only need to migrate enabled IRQS */ - if (!desc || !desc->action) + if (!desc->action) continue; if (desc->irq_data.domain != xics_host) continue; -- cgit v1.1 From e49f7a9997c61cf800f2db5decba68d318352ef0 Mon Sep 17 00:00:00 2001 From: Gavin Shan Date: Tue, 24 Apr 2012 19:11:22 +0000 Subject: powerpc/pseries: Rivet CONFIG_EEH for pSeries platform Recently, Ryan Wang tried to compile PPC pSeries platform without CONFIG_EEH and eventually run into errors. Nishanth Aravamudan helped to narrow down the root cause. Actually, the pSeries platform depends on CONFIG_EEH heavily and that won't work properly without EEH support. According to Ben's suggestion, the patch make CONFIG_EEH invisible and keep it as always selected on pSeries platform. Signed-off-by: Gavin Shan Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/platforms/pseries/Kconfig | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig index aadbe4f..178a5f3 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -30,9 +30,9 @@ config PPC_SPLPAR two or more partitions. config EEH - bool "PCI Extended Error Handling (EEH)" if EXPERT + bool depends on PPC_PSERIES && PCI - default y if !EXPERT + default y config PSERIES_MSI bool -- cgit v1.1 From 810b4de25e53459323ff48957b0162b48d6cbd57 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Sat, 28 Apr 2012 18:53:49 -0500 Subject: tty/serial/pmac_zilog: Fix "nobody cared" IRQ message Following commit a79dd5a titled "tty/serial/pmac_zilog: Fix suspend & resume", my Powerbook G4 Titanium showed the following stack dump: [ 36.878225] irq 23: nobody cared (try booting with the "irqpoll" option) [ 36.878251] Call Trace: [ 36.878291] [dfff3f00] [c000984c] show_stack+0x7c/0x194 (unreliable) [ 36.878322] [dfff3f40] [c00a6868] __report_bad_irq+0x44/0xf4 [ 36.878339] [dfff3f60] [c00a6b04] note_interrupt+0x1ec/0x2ac [ 36.878356] [dfff3f80] [c00a48d0] handle_irq_event_percpu+0x250/0x2b8 [ 36.878372] [dfff3fd0] [c00a496c] handle_irq_event+0x34/0x54 [ 36.878389] [dfff3fe0] [c00a753c] handle_fasteoi_irq+0xb4/0x124 [ 36.878412] [dfff3ff0] [c000f5bc] call_handle_irq+0x18/0x28 [ 36.878428] [deef1f10] [c000719c] do_IRQ+0x114/0x1cc [ 36.878446] [deef1f40] [c0015868] ret_from_except+0x0/0x1c [ 36.878484] --- Exception: 501 at 0xf497610 [ 36.878489] LR = 0xfdc3dd0 [ 36.878497] handlers: [ 36.878510] [] pmz_interrupt [ 36.878520] Disabling IRQ #23 From an E-mail exchange about this problem, Andreas Schwab noticed a typo that resulted in the wrong condition being tested. The patch also corrects 2 typos that incorrectly report why an error branch is being taken. Signed-off-by: Larry Finger Signed-off-by: Benjamin Herrenschmidt --- drivers/tty/serial/pmac_zilog.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/tty/serial/pmac_zilog.c b/drivers/tty/serial/pmac_zilog.c index 08ebe90..654755a 100644 --- a/drivers/tty/serial/pmac_zilog.c +++ b/drivers/tty/serial/pmac_zilog.c @@ -469,7 +469,7 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) tty = NULL; if (r3 & (CHAEXT | CHATxIP | CHARxIP)) { if (!ZS_IS_OPEN(uap_a)) { - pmz_debug("ChanA interrupt while open !\n"); + pmz_debug("ChanA interrupt while not open !\n"); goto skip_a; } write_zsreg(uap_a, R0, RES_H_IUS); @@ -493,8 +493,8 @@ static irqreturn_t pmz_interrupt(int irq, void *dev_id) spin_lock(&uap_b->port.lock); tty = NULL; if (r3 & (CHBEXT | CHBTxIP | CHBRxIP)) { - if (!ZS_IS_OPEN(uap_a)) { - pmz_debug("ChanB interrupt while open !\n"); + if (!ZS_IS_OPEN(uap_b)) { + pmz_debug("ChanB interrupt while not open !\n"); goto skip_b; } write_zsreg(uap_b, R0, RES_H_IUS); -- cgit v1.1 From 5206b524c9b4e289ab0565e7bffd503d2e671c6e Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Fri, 13 Apr 2012 19:22:30 +1000 Subject: drm/nouveau/bios: fix regression on some nv4x board We started using the connector table on nv4x a while back, and this VBIOS has bad connector indices which causes the wrong encoders to get paired with connectors. Add a quirk to fix this... Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_bios.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 80963d0..0be4a81 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -6156,10 +6156,14 @@ dcb_fake_connectors(struct nvbios *bios) /* heuristic: if we ever get a non-zero connector field, assume * that all the indices are valid and we don't need fake them. + * + * and, as usual, a blacklist of boards with bad bios data.. */ - for (i = 0; i < dcbt->entries; i++) { - if (dcbt->entry[i].connector) - return; + if (!nv_match_device(bios->dev, 0x0392, 0x107d, 0x20a2)) { + for (i = 0; i < dcbt->entries; i++) { + if (dcbt->entry[i].connector) + return; + } } /* no useful connector info available, we need to make it up -- cgit v1.1 From 0ed4bb92f5514bd1118c5dd537ce424381110286 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Tue, 24 Apr 2012 13:26:51 +1000 Subject: drm/nouveau/hdmi: use correct hdmi regs for nvaa/nvac Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_hdmi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_hdmi.c b/drivers/gpu/drm/nouveau/nouveau_hdmi.c index 59ea1c1..c3de363 100644 --- a/drivers/gpu/drm/nouveau/nouveau_hdmi.c +++ b/drivers/gpu/drm/nouveau/nouveau_hdmi.c @@ -32,7 +32,9 @@ static bool hdmi_sor(struct drm_encoder *encoder) { struct drm_nouveau_private *dev_priv = encoder->dev->dev_private; - if (dev_priv->chipset < 0xa3) + if (dev_priv->chipset < 0xa3 || + dev_priv->chipset == 0xaa || + dev_priv->chipset == 0xac) return false; return true; } -- cgit v1.1 From ffc6a4e49e5bc117aac13ed752cfc018c163e2ac Mon Sep 17 00:00:00 2001 From: Christoph Bumiller Date: Thu, 19 Apr 2012 19:59:20 +0200 Subject: nvc0/fb: shut up PMFB interrupt after the first occurrence Signed-off-by: Christoph Bumiller Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nvc0_fb.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nvc0_fb.c b/drivers/gpu/drm/nouveau/nvc0_fb.c index 5bf5503..f704e94 100644 --- a/drivers/gpu/drm/nouveau/nvc0_fb.c +++ b/drivers/gpu/drm/nouveau/nvc0_fb.c @@ -54,6 +54,11 @@ nvc0_mfb_isr(struct drm_device *dev) nvc0_mfb_subp_isr(dev, unit, subp); units &= ~(1 << unit); } + + /* we do something horribly wrong and upset PMFB a lot, so mask off + * interrupts from it after the first one until it's fixed + */ + nv_mask(dev, 0x000640, 0x02000000, 0x00000000); } static void -- cgit v1.1 From b99da31ed8521eb78d5d6930f3128f8ecdb75fae Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Fri, 27 Apr 2012 15:11:33 +1000 Subject: drm/nv10/gpio: fix thinko in mask for gpio lines 2-9 Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv10_gpio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nv10_gpio.c b/drivers/gpu/drm/nouveau/nv10_gpio.c index 550ad3f..9d79180 100644 --- a/drivers/gpu/drm/nouveau/nv10_gpio.c +++ b/drivers/gpu/drm/nouveau/nv10_gpio.c @@ -65,7 +65,7 @@ nv10_gpio_drive(struct drm_device *dev, int line, int dir, int out) if (line < 10) { line = (line - 2) * 4; reg = NV_PCRTC_GPIO_EXT; - mask = 0x00000003 << ((line - 2) * 4); + mask = 0x00000003; data = (dir << 1) | out; } else if (line < 14) { -- cgit v1.1 From 4b984cd50bc1b6d492175cd77bfabb78e76ffa67 Mon Sep 17 00:00:00 2001 From: Hans Schillstrom Date: Thu, 26 Apr 2012 09:45:34 +0200 Subject: ipvs: null check of net->ipvs in lblc(r) shedulers Avoid crash when registering shedulers after the IPVS core initialization for netns fails. Do this by checking for present core (net->ipvs). Signed-off-by: Hans Schillstrom Acked-by: Julian Anastasov Signed-off-by: Simon Horman --- net/netfilter/ipvs/ip_vs_lblc.c | 3 +++ net/netfilter/ipvs/ip_vs_lblcr.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c index 0f16283..caa4370 100644 --- a/net/netfilter/ipvs/ip_vs_lblc.c +++ b/net/netfilter/ipvs/ip_vs_lblc.c @@ -551,6 +551,9 @@ static int __net_init __ip_vs_lblc_init(struct net *net) { struct netns_ipvs *ipvs = net_ipvs(net); + if (!ipvs) + return -ENOENT; + if (!net_eq(net, &init_net)) { ipvs->lblc_ctl_table = kmemdup(vs_vars_table, sizeof(vs_vars_table), diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c index eec797f..548bf37 100644 --- a/net/netfilter/ipvs/ip_vs_lblcr.c +++ b/net/netfilter/ipvs/ip_vs_lblcr.c @@ -745,6 +745,9 @@ static int __net_init __ip_vs_lblcr_init(struct net *net) { struct netns_ipvs *ipvs = net_ipvs(net); + if (!ipvs) + return -ENOENT; + if (!net_eq(net, &init_net)) { ipvs->lblcr_ctl_table = kmemdup(vs_vars_table, sizeof(vs_vars_table), -- cgit v1.1 From 582b8e3eadaec77788c1aa188081a8d5059c42a6 Mon Sep 17 00:00:00 2001 From: Hans Schillstrom Date: Thu, 26 Apr 2012 09:45:35 +0200 Subject: ipvs: take care of return value from protocol init_netns ip_vs_create_timeout_table() can return NULL All functions protocol init_netns is affected of this patch. Signed-off-by: Hans Schillstrom Acked-by: Julian Anastasov Signed-off-by: Simon Horman --- include/net/ip_vs.h | 2 +- net/netfilter/ipvs/ip_vs_proto.c | 11 +++++++++-- net/netfilter/ipvs/ip_vs_proto_sctp.c | 5 ++++- net/netfilter/ipvs/ip_vs_proto_tcp.c | 5 ++++- net/netfilter/ipvs/ip_vs_proto_udp.c | 5 ++++- 5 files changed, 22 insertions(+), 6 deletions(-) diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 2bdee51..6d90dda 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -393,7 +393,7 @@ struct ip_vs_protocol { void (*exit)(struct ip_vs_protocol *pp); - void (*init_netns)(struct net *net, struct ip_vs_proto_data *pd); + int (*init_netns)(struct net *net, struct ip_vs_proto_data *pd); void (*exit_netns)(struct net *net, struct ip_vs_proto_data *pd); diff --git a/net/netfilter/ipvs/ip_vs_proto.c b/net/netfilter/ipvs/ip_vs_proto.c index a62360e..ed835e6 100644 --- a/net/netfilter/ipvs/ip_vs_proto.c +++ b/net/netfilter/ipvs/ip_vs_proto.c @@ -78,8 +78,15 @@ register_ip_vs_proto_netns(struct net *net, struct ip_vs_protocol *pp) ipvs->proto_data_table[hash] = pd; atomic_set(&pd->appcnt, 0); /* Init app counter */ - if (pp->init_netns != NULL) - pp->init_netns(net, pd); + if (pp->init_netns != NULL) { + int ret = pp->init_netns(net, pd); + if (ret) { + /* unlink an free proto data */ + ipvs->proto_data_table[hash] = pd->next; + kfree(pd); + return ret; + } + } return 0; } diff --git a/net/netfilter/ipvs/ip_vs_proto_sctp.c b/net/netfilter/ipvs/ip_vs_proto_sctp.c index 1fbf7a2..9f3fb75 100644 --- a/net/netfilter/ipvs/ip_vs_proto_sctp.c +++ b/net/netfilter/ipvs/ip_vs_proto_sctp.c @@ -1090,7 +1090,7 @@ out: * timeouts is netns related now. * --------------------------------------------- */ -static void __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd) +static int __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd) { struct netns_ipvs *ipvs = net_ipvs(net); @@ -1098,6 +1098,9 @@ static void __ip_vs_sctp_init(struct net *net, struct ip_vs_proto_data *pd) spin_lock_init(&ipvs->sctp_app_lock); pd->timeout_table = ip_vs_create_timeout_table((int *)sctp_timeouts, sizeof(sctp_timeouts)); + if (!pd->timeout_table) + return -ENOMEM; + return 0; } static void __ip_vs_sctp_exit(struct net *net, struct ip_vs_proto_data *pd) diff --git a/net/netfilter/ipvs/ip_vs_proto_tcp.c b/net/netfilter/ipvs/ip_vs_proto_tcp.c index ef8641f..cd609cc 100644 --- a/net/netfilter/ipvs/ip_vs_proto_tcp.c +++ b/net/netfilter/ipvs/ip_vs_proto_tcp.c @@ -677,7 +677,7 @@ void ip_vs_tcp_conn_listen(struct net *net, struct ip_vs_conn *cp) * timeouts is netns related now. * --------------------------------------------- */ -static void __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd) +static int __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd) { struct netns_ipvs *ipvs = net_ipvs(net); @@ -685,7 +685,10 @@ static void __ip_vs_tcp_init(struct net *net, struct ip_vs_proto_data *pd) spin_lock_init(&ipvs->tcp_app_lock); pd->timeout_table = ip_vs_create_timeout_table((int *)tcp_timeouts, sizeof(tcp_timeouts)); + if (!pd->timeout_table) + return -ENOMEM; pd->tcp_state_table = tcp_states; + return 0; } static void __ip_vs_tcp_exit(struct net *net, struct ip_vs_proto_data *pd) diff --git a/net/netfilter/ipvs/ip_vs_proto_udp.c b/net/netfilter/ipvs/ip_vs_proto_udp.c index f4b7262..2fedb2d 100644 --- a/net/netfilter/ipvs/ip_vs_proto_udp.c +++ b/net/netfilter/ipvs/ip_vs_proto_udp.c @@ -467,7 +467,7 @@ udp_state_transition(struct ip_vs_conn *cp, int direction, cp->timeout = pd->timeout_table[IP_VS_UDP_S_NORMAL]; } -static void __udp_init(struct net *net, struct ip_vs_proto_data *pd) +static int __udp_init(struct net *net, struct ip_vs_proto_data *pd) { struct netns_ipvs *ipvs = net_ipvs(net); @@ -475,6 +475,9 @@ static void __udp_init(struct net *net, struct ip_vs_proto_data *pd) spin_lock_init(&ipvs->udp_app_lock); pd->timeout_table = ip_vs_create_timeout_table((int *)udp_timeouts, sizeof(udp_timeouts)); + if (!pd->timeout_table) + return -ENOMEM; + return 0; } static void __udp_exit(struct net *net, struct ip_vs_proto_data *pd) -- cgit v1.1 From 8537de8a7ab6681cc72fb0411ab1ba7fdba62dd0 Mon Sep 17 00:00:00 2001 From: Hans Schillstrom Date: Thu, 26 Apr 2012 07:47:44 +0200 Subject: ipvs: kernel oops - do_ip_vs_get_ctl Change order of init so netns init is ready when register ioctl and netlink. Ver2 Whitespace fixes and __init added. Reported-by: "Ryan O'Hara" Signed-off-by: Hans Schillstrom Acked-by: Julian Anastasov Signed-off-by: Jesper Dangaard Brouer Signed-off-by: Simon Horman --- include/net/ip_vs.h | 2 ++ net/netfilter/ipvs/ip_vs_core.c | 9 +++++++ net/netfilter/ipvs/ip_vs_ctl.c | 52 ++++++++++++++++++++++++----------------- 3 files changed, 41 insertions(+), 22 deletions(-) diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h index 6d90dda..72522f0 100644 --- a/include/net/ip_vs.h +++ b/include/net/ip_vs.h @@ -1203,6 +1203,8 @@ ip_vs_lookup_real_service(struct net *net, int af, __u16 protocol, extern int ip_vs_use_count_inc(void); extern void ip_vs_use_count_dec(void); +extern int ip_vs_register_nl_ioctl(void); +extern void ip_vs_unregister_nl_ioctl(void); extern int ip_vs_control_init(void); extern void ip_vs_control_cleanup(void); extern struct ip_vs_dest * diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index 260b9ef..00bdb1d 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1995,10 +1995,18 @@ static int __init ip_vs_init(void) goto cleanup_dev; } + ret = ip_vs_register_nl_ioctl(); + if (ret < 0) { + pr_err("can't register netlink/ioctl.\n"); + goto cleanup_hooks; + } + pr_info("ipvs loaded.\n"); return ret; +cleanup_hooks: + nf_unregister_hooks(ip_vs_ops, ARRAY_SIZE(ip_vs_ops)); cleanup_dev: unregister_pernet_device(&ipvs_core_dev_ops); cleanup_sub: @@ -2014,6 +2022,7 @@ exit: static void __exit ip_vs_cleanup(void) { + ip_vs_unregister_nl_ioctl(); nf_unregister_hooks(ip_vs_ops, ARRAY_SIZE(ip_vs_ops)); unregister_pernet_device(&ipvs_core_dev_ops); unregister_pernet_subsys(&ipvs_core_ops); /* free ip_vs struct */ diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index 376d2b1..f558998 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -3750,21 +3750,10 @@ void __net_exit ip_vs_control_net_cleanup(struct net *net) free_percpu(ipvs->tot_stats.cpustats); } -int __init ip_vs_control_init(void) +int __init ip_vs_register_nl_ioctl(void) { - int idx; int ret; - EnterFunction(2); - - /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */ - for(idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { - INIT_LIST_HEAD(&ip_vs_svc_table[idx]); - INIT_LIST_HEAD(&ip_vs_svc_fwm_table[idx]); - } - - smp_wmb(); /* Do we really need it now ? */ - ret = nf_register_sockopt(&ip_vs_sockopts); if (ret) { pr_err("cannot register sockopt.\n"); @@ -3776,28 +3765,47 @@ int __init ip_vs_control_init(void) pr_err("cannot register Generic Netlink interface.\n"); goto err_genl; } - - ret = register_netdevice_notifier(&ip_vs_dst_notifier); - if (ret < 0) - goto err_notf; - - LeaveFunction(2); return 0; -err_notf: - ip_vs_genl_unregister(); err_genl: nf_unregister_sockopt(&ip_vs_sockopts); err_sock: return ret; } +void ip_vs_unregister_nl_ioctl(void) +{ + ip_vs_genl_unregister(); + nf_unregister_sockopt(&ip_vs_sockopts); +} + +int __init ip_vs_control_init(void) +{ + int idx; + int ret; + + EnterFunction(2); + + /* Initialize svc_table, ip_vs_svc_fwm_table, rs_table */ + for (idx = 0; idx < IP_VS_SVC_TAB_SIZE; idx++) { + INIT_LIST_HEAD(&ip_vs_svc_table[idx]); + INIT_LIST_HEAD(&ip_vs_svc_fwm_table[idx]); + } + + smp_wmb(); /* Do we really need it now ? */ + + ret = register_netdevice_notifier(&ip_vs_dst_notifier); + if (ret < 0) + return ret; + + LeaveFunction(2); + return 0; +} + void ip_vs_control_cleanup(void) { EnterFunction(2); unregister_netdevice_notifier(&ip_vs_dst_notifier); - ip_vs_genl_unregister(); - nf_unregister_sockopt(&ip_vs_sockopts); LeaveFunction(2); } -- cgit v1.1 From 6cf51852486af3d79f57bf46d00209a14244dbaa Mon Sep 17 00:00:00 2001 From: Pablo Neira Ayuso Date: Fri, 27 Apr 2012 02:00:50 +0200 Subject: netfilter: xt_CT: fix wrong checking in the timeout assignment path The current checking always succeeded. We have to check the first character of the string to check that it's empty, thus, skipping the timeout path. This fixes the use of the CT target without the timeout option. Signed-off-by: Pablo Neira Ayuso --- net/netfilter/xt_CT.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/netfilter/xt_CT.c b/net/netfilter/xt_CT.c index 59530e9..3746d8b 100644 --- a/net/netfilter/xt_CT.c +++ b/net/netfilter/xt_CT.c @@ -227,7 +227,7 @@ static int xt_ct_tg_check_v1(const struct xt_tgchk_param *par) } #ifdef CONFIG_NF_CONNTRACK_TIMEOUT - if (info->timeout) { + if (info->timeout[0]) { typeof(nf_ct_timeout_find_get_hook) timeout_find_get; struct nf_conn_timeout *timeout_ext; -- cgit v1.1 From e875c1e3e758447ba81ca450d89434b3b0496d37 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Eric=20B=C3=A9nard?= Date: Sun, 29 Apr 2012 17:37:57 +0200 Subject: ASoC: tlv312aic23: unbreak resume MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * commit f9dfbf9 "ASoC: tlv320aic23: convert to soc-cache" leads to a bug preventing resumeof the codec as regmap expects a 9 bits data register but 0xFFFF is passed in tlv320aic23_set_bias_level and this values gets cached preventing any write to the TLV320AIC23_PWR register as the final value produced by regmap is (register << 9) | value * this patch solves the problem by only working on the 9 bits the register contains. Signed-off-by: Eric Bénard Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- sound/soc/codecs/tlv320aic23.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c index 16d55f9..df1e07f 100644 --- a/sound/soc/codecs/tlv320aic23.c +++ b/sound/soc/codecs/tlv320aic23.c @@ -472,7 +472,7 @@ static int tlv320aic23_set_dai_sysclk(struct snd_soc_dai *codec_dai, static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { - u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0xff7f; + u16 reg = snd_soc_read(codec, TLV320AIC23_PWR) & 0x17f; switch (level) { case SND_SOC_BIAS_ON: @@ -491,7 +491,7 @@ static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec, case SND_SOC_BIAS_OFF: /* everything off, dac mute, inactive */ snd_soc_write(codec, TLV320AIC23_ACTIVE, 0x0); - snd_soc_write(codec, TLV320AIC23_PWR, 0xffff); + snd_soc_write(codec, TLV320AIC23_PWR, 0x1ff); break; } codec->dapm.bias_level = level; -- cgit v1.1 From cbbb34498f8b2b26cbdc79532c8a2ee5cd1e756a Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 30 Apr 2012 11:52:40 -0400 Subject: SUNRPC: RPC client must use the current utsname hostname string Now that the rpc client is namespace aware, it needs to use the utsname of the process that created it instead of using the init_utsname. Both rpc_new_client and rpc_clone_client need to be fixed. Signed-off-by: Trond Myklebust Cc: Stanislav Kinsbursky --- net/sunrpc/clnt.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index d127bd7..adf2990 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -279,6 +279,14 @@ void rpc_clients_notifier_unregister(void) return rpc_pipefs_notifier_unregister(&rpc_clients_block); } +static void rpc_clnt_set_nodename(struct rpc_clnt *clnt, const char *nodename) +{ + clnt->cl_nodelen = strlen(nodename); + if (clnt->cl_nodelen > UNX_MAXNODENAME) + clnt->cl_nodelen = UNX_MAXNODENAME; + memcpy(clnt->cl_nodename, nodename, clnt->cl_nodelen); +} + static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt) { const struct rpc_program *program = args->program; @@ -359,10 +367,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru } /* save the nodename */ - clnt->cl_nodelen = strlen(init_utsname()->nodename); - if (clnt->cl_nodelen > UNX_MAXNODENAME) - clnt->cl_nodelen = UNX_MAXNODENAME; - memcpy(clnt->cl_nodename, init_utsname()->nodename, clnt->cl_nodelen); + rpc_clnt_set_nodename(clnt, utsname()->nodename); rpc_register_client(clnt); return clnt; @@ -521,6 +526,7 @@ rpc_clone_client(struct rpc_clnt *clnt) err = rpc_setup_pipedir(new, clnt->cl_program->pipe_dir_name); if (err != 0) goto out_no_path; + rpc_clnt_set_nodename(new, utsname()->nodename); if (new->cl_auth) atomic_inc(&new->cl_auth->au_count); atomic_inc(&clnt->cl_count); -- cgit v1.1 From 3617e5031b3acec04efaa36566a8111ac8f07325 Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Mon, 30 Apr 2012 12:04:58 -0400 Subject: NFSv4.1: Use the correct hostname in the client identifier string We need to use the hostname of the process that created the nfs_client. That hostname is now stored in the rpc_client->cl_nodename. Also remove the utsname()->domainname component. There is no reason to include the NIS/YP domainname in a client identifier string. Signed-off-by: Trond Myklebust --- fs/nfs/nfs4proc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 75eb883..99650aa 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5122,10 +5122,9 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred) nfs4_construct_boot_verifier(clp, &verifier); args.id_len = scnprintf(args.id, sizeof(args.id), - "%s/%s.%s/%u", + "%s/%s/%u", clp->cl_ipaddr, - init_utsname()->nodename, - init_utsname()->domainname, + clp->cl_rpcclient->cl_nodename, clp->cl_rpcclient->cl_auth->au_flavor); res.server_scope = kzalloc(sizeof(struct server_scope), GFP_KERNEL); -- cgit v1.1 From 518fbf9cdf17875d808596afd77fc115a6f942ca Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 28 Apr 2012 23:21:56 +0000 Subject: net: fix sk_sockets_allocated_read_positive Denys Fedoryshchenko reported frequent crashes on a proxy server and kindly provided a lockdep report that explains it all : [ 762.903868] [ 762.903880] ================================= [ 762.903890] [ INFO: inconsistent lock state ] [ 762.903903] 3.3.4-build-0061 #8 Not tainted [ 762.904133] --------------------------------- [ 762.904344] inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage. [ 762.904542] squid/1603 [HC0[0]:SC0[0]:HE1:SE1] takes: [ 762.904542] (key#3){+.?...}, at: [] __percpu_counter_sum+0xd/0x58 [ 762.904542] {IN-SOFTIRQ-W} state was registered at: [ 762.904542] [] __lock_acquire+0x284/0xc26 [ 762.904542] [] lock_acquire+0x71/0x85 [ 762.904542] [] _raw_spin_lock+0x33/0x40 [ 762.904542] [] __percpu_counter_add+0x58/0x7c [ 762.904542] [] sk_clone_lock+0x1e5/0x200 [ 762.904542] [] inet_csk_clone_lock+0xe/0x78 [ 762.904542] [] tcp_create_openreq_child+0x1b/0x404 [ 762.904542] [] tcp_v4_syn_recv_sock+0x32/0x1c1 [ 762.904542] [] tcp_check_req+0x1fd/0x2d7 [ 762.904542] [] tcp_v4_do_rcv+0xab/0x194 [ 762.904542] [] tcp_v4_rcv+0x3b3/0x5cc [ 762.904542] [] ip_local_deliver_finish+0x13a/0x1e9 [ 762.904542] [] NF_HOOK.clone.11+0x46/0x4d [ 762.904542] [] ip_local_deliver+0x41/0x45 [ 762.904542] [] ip_rcv_finish+0x31a/0x33c [ 762.904542] [] NF_HOOK.clone.11+0x46/0x4d [ 762.904542] [] ip_rcv+0x201/0x23e [ 762.904542] [] __netif_receive_skb+0x319/0x368 [ 762.904542] [] netif_receive_skb+0x4e/0x7d [ 762.904542] [] napi_skb_finish+0x1e/0x34 [ 762.904542] [] napi_gro_receive+0x20/0x24 [ 762.904542] [] e1000_receive_skb+0x3f/0x45 [e1000e] [ 762.904542] [] e1000_clean_rx_irq+0x1f9/0x284 [e1000e] [ 762.904542] [] e1000_clean+0x62/0x1f4 [e1000e] [ 762.904542] [] net_rx_action+0x90/0x160 [ 762.904542] [] __do_softirq+0x7b/0x118 [ 762.904542] irq event stamp: 156915469 [ 762.904542] hardirqs last enabled at (156915469): [] __slab_alloc.clone.58.clone.63+0xc4/0x2de [ 762.904542] hardirqs last disabled at (156915468): [] __slab_alloc.clone.58.clone.63+0x22/0x2de [ 762.904542] softirqs last enabled at (156915466): [] lock_sock_nested+0x64/0x6c [ 762.904542] softirqs last disabled at (156915464): [] _raw_spin_lock_bh+0xe/0x45 [ 762.904542] [ 762.904542] other info that might help us debug this: [ 762.904542] Possible unsafe locking scenario: [ 762.904542] [ 762.904542] CPU0 [ 762.904542] ---- [ 762.904542] lock(key#3); [ 762.904542] [ 762.904542] lock(key#3); [ 762.904542] [ 762.904542] *** DEADLOCK *** [ 762.904542] [ 762.904542] 1 lock held by squid/1603: [ 762.904542] #0: (sk_lock-AF_INET){+.+.+.}, at: [] lock_sock+0xa/0xc [ 762.904542] [ 762.904542] stack backtrace: [ 762.904542] Pid: 1603, comm: squid Not tainted 3.3.4-build-0061 #8 [ 762.904542] Call Trace: [ 762.904542] [] ? printk+0x18/0x1d [ 762.904542] [] valid_state+0x1f6/0x201 [ 762.904542] [] mark_lock+0xd1/0x1bb [ 762.904542] [] ? mark_lock+0x26/0x1bb [ 762.904542] [] ? check_usage_forwards+0x77/0x77 [ 762.904542] [] __lock_acquire+0x2f8/0xc26 [ 762.904542] [] ? mark_held_locks+0x5d/0x7b [ 762.904542] [] ? trace_hardirqs_on+0xb/0xd [ 762.904542] [] ? __lock_acquire+0x4d4/0xc26 [ 762.904542] [] lock_acquire+0x71/0x85 [ 762.904542] [] ? __percpu_counter_sum+0xd/0x58 [ 762.904542] [] _raw_spin_lock+0x33/0x40 [ 762.904542] [] ? __percpu_counter_sum+0xd/0x58 [ 762.904542] [] __percpu_counter_sum+0xd/0x58 [ 762.904542] [] __sk_mem_schedule+0xdd/0x1c7 [ 762.904542] [] ? __alloc_skb+0x76/0x100 [ 762.904542] [] sk_wmem_schedule+0x21/0x2d [ 762.904542] [] sk_stream_alloc_skb+0x42/0xaa [ 762.904542] [] tcp_sendmsg+0x18f/0x68b [ 762.904542] [] ? ip_fast_csum+0x30/0x30 [ 762.904542] [] inet_sendmsg+0x53/0x5a [ 762.904542] [] sock_aio_write+0xd2/0xda [ 762.904542] [] ? mark_lock+0x26/0x1bb [ 762.904542] [] do_sync_write+0x9f/0xd9 [ 762.904542] [] ? file_free_rcu+0x2f/0x2f [ 762.904542] [] vfs_write+0x8f/0xab [ 762.904542] [] ? fget_light+0x75/0x7c [ 762.904542] [] sys_write+0x3d/0x5e [ 762.904542] [] syscall_call+0x7/0xb [ 762.904542] [] ? rp_sidt+0x41/0x83 Bug is that sk_sockets_allocated_read_positive() calls percpu_counter_sum_positive() without BH being disabled. This bug was added in commit 180d8cd942ce33 (foundations of per-cgroup memory pressure controlling.), since previous code was using percpu_counter_read_positive() which is IRQ safe. In __sk_mem_schedule() we dont need the precise count of allocated sockets and can revert to previous behavior. Reported-by: Denys Fedoryshchenko Sined-off-by: Eric Dumazet Cc: Glauber Costa Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- include/net/sock.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/net/sock.h b/include/net/sock.h index 188532e..5a0a58a 100644 --- a/include/net/sock.h +++ b/include/net/sock.h @@ -1129,9 +1129,9 @@ sk_sockets_allocated_read_positive(struct sock *sk) struct proto *prot = sk->sk_prot; if (mem_cgroup_sockets_enabled && sk->sk_cgrp) - return percpu_counter_sum_positive(sk->sk_cgrp->sockets_allocated); + return percpu_counter_read_positive(sk->sk_cgrp->sockets_allocated); - return percpu_counter_sum_positive(prot->sockets_allocated); + return percpu_counter_read_positive(prot->sockets_allocated); } static inline int -- cgit v1.1 From 05be18241e83d2ac6b656c8f924e74b3998c173f Mon Sep 17 00:00:00 2001 From: Jan Seiffert Date: Sun, 29 Apr 2012 19:02:19 +0000 Subject: bpf jit: Let the powerpc jit handle negative offsets Now the helper function from filter.c for negative offsets is exported, it can be used it in the jit to handle negative offsets. First modify the asm load helper functions to handle: - know positive offsets - know negative offsets - any offset then the compiler can be modified to explicitly use these helper when appropriate. This fixes the case of a negative X register and allows to lift the restriction that bpf programs with negative offsets can't be jited. Tested-by: Benjamin Herrenschmidt Signed-off-by: Jan Seiffert Signed-off-by: David S. Miller --- arch/powerpc/net/bpf_jit.h | 8 ++- arch/powerpc/net/bpf_jit_64.S | 108 +++++++++++++++++++++++++++++++++++----- arch/powerpc/net/bpf_jit_comp.c | 26 ++++------ 3 files changed, 111 insertions(+), 31 deletions(-) diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h index af1ab5e..5c3cf2d 100644 --- a/arch/powerpc/net/bpf_jit.h +++ b/arch/powerpc/net/bpf_jit.h @@ -48,7 +48,13 @@ /* * Assembly helpers from arch/powerpc/net/bpf_jit.S: */ -extern u8 sk_load_word[], sk_load_half[], sk_load_byte[], sk_load_byte_msh[]; +#define DECLARE_LOAD_FUNC(func) \ + extern u8 func[], func##_negative_offset[], func##_positive_offset[] + +DECLARE_LOAD_FUNC(sk_load_word); +DECLARE_LOAD_FUNC(sk_load_half); +DECLARE_LOAD_FUNC(sk_load_byte); +DECLARE_LOAD_FUNC(sk_load_byte_msh); #define FUNCTION_DESCR_SIZE 24 diff --git a/arch/powerpc/net/bpf_jit_64.S b/arch/powerpc/net/bpf_jit_64.S index ff4506e..55ba385 100644 --- a/arch/powerpc/net/bpf_jit_64.S +++ b/arch/powerpc/net/bpf_jit_64.S @@ -31,14 +31,13 @@ * then branch directly to slow_path_XXX if required. (In fact, could * load a spare GPR with the address of slow_path_generic and pass size * as an argument, making the call site a mtlr, li and bllr.) - * - * Technically, the "is addr < 0" check is unnecessary & slowing down - * the ABS path, as it's statically checked on generation. */ .globl sk_load_word sk_load_word: cmpdi r_addr, 0 - blt bpf_error + blt bpf_slow_path_word_neg + .globl sk_load_word_positive_offset +sk_load_word_positive_offset: /* Are we accessing past headlen? */ subi r_scratch1, r_HL, 4 cmpd r_scratch1, r_addr @@ -51,7 +50,9 @@ sk_load_word: .globl sk_load_half sk_load_half: cmpdi r_addr, 0 - blt bpf_error + blt bpf_slow_path_half_neg + .globl sk_load_half_positive_offset +sk_load_half_positive_offset: subi r_scratch1, r_HL, 2 cmpd r_scratch1, r_addr blt bpf_slow_path_half @@ -61,7 +62,9 @@ sk_load_half: .globl sk_load_byte sk_load_byte: cmpdi r_addr, 0 - blt bpf_error + blt bpf_slow_path_byte_neg + .globl sk_load_byte_positive_offset +sk_load_byte_positive_offset: cmpd r_HL, r_addr ble bpf_slow_path_byte lbzx r_A, r_D, r_addr @@ -69,22 +72,20 @@ sk_load_byte: /* * BPF_S_LDX_B_MSH: ldxb 4*([offset]&0xf) - * r_addr is the offset value, already known positive + * r_addr is the offset value */ .globl sk_load_byte_msh sk_load_byte_msh: + cmpdi r_addr, 0 + blt bpf_slow_path_byte_msh_neg + .globl sk_load_byte_msh_positive_offset +sk_load_byte_msh_positive_offset: cmpd r_HL, r_addr ble bpf_slow_path_byte_msh lbzx r_X, r_D, r_addr rlwinm r_X, r_X, 2, 32-4-2, 31-2 blr -bpf_error: - /* Entered with cr0 = lt */ - li r3, 0 - /* Generated code will 'blt epilogue', returning 0. */ - blr - /* Call out to skb_copy_bits: * We'll need to back up our volatile regs first; we have * local variable space at r1+(BPF_PPC_STACK_BASIC). @@ -136,3 +137,84 @@ bpf_slow_path_byte_msh: lbz r_X, BPF_PPC_STACK_BASIC+(2*8)(r1) rlwinm r_X, r_X, 2, 32-4-2, 31-2 blr + +/* Call out to bpf_internal_load_pointer_neg_helper: + * We'll need to back up our volatile regs first; we have + * local variable space at r1+(BPF_PPC_STACK_BASIC). + * Allocate a new stack frame here to remain ABI-compliant in + * stashing LR. + */ +#define sk_negative_common(SIZE) \ + mflr r0; \ + std r0, 16(r1); \ + /* R3 goes in parameter space of caller's frame */ \ + std r_skb, (BPF_PPC_STACKFRAME+48)(r1); \ + std r_A, (BPF_PPC_STACK_BASIC+(0*8))(r1); \ + std r_X, (BPF_PPC_STACK_BASIC+(1*8))(r1); \ + stdu r1, -BPF_PPC_SLOWPATH_FRAME(r1); \ + /* R3 = r_skb, as passed */ \ + mr r4, r_addr; \ + li r5, SIZE; \ + bl bpf_internal_load_pointer_neg_helper; \ + /* R3 != 0 on success */ \ + addi r1, r1, BPF_PPC_SLOWPATH_FRAME; \ + ld r0, 16(r1); \ + ld r_A, (BPF_PPC_STACK_BASIC+(0*8))(r1); \ + ld r_X, (BPF_PPC_STACK_BASIC+(1*8))(r1); \ + mtlr r0; \ + cmpldi r3, 0; \ + beq bpf_error_slow; /* cr0 = EQ */ \ + mr r_addr, r3; \ + ld r_skb, (BPF_PPC_STACKFRAME+48)(r1); \ + /* Great success! */ + +bpf_slow_path_word_neg: + lis r_scratch1,-32 /* SKF_LL_OFF */ + cmpd r_addr, r_scratch1 /* addr < SKF_* */ + blt bpf_error /* cr0 = LT */ + .globl sk_load_word_negative_offset +sk_load_word_negative_offset: + sk_negative_common(4) + lwz r_A, 0(r_addr) + blr + +bpf_slow_path_half_neg: + lis r_scratch1,-32 /* SKF_LL_OFF */ + cmpd r_addr, r_scratch1 /* addr < SKF_* */ + blt bpf_error /* cr0 = LT */ + .globl sk_load_half_negative_offset +sk_load_half_negative_offset: + sk_negative_common(2) + lhz r_A, 0(r_addr) + blr + +bpf_slow_path_byte_neg: + lis r_scratch1,-32 /* SKF_LL_OFF */ + cmpd r_addr, r_scratch1 /* addr < SKF_* */ + blt bpf_error /* cr0 = LT */ + .globl sk_load_byte_negative_offset +sk_load_byte_negative_offset: + sk_negative_common(1) + lbz r_A, 0(r_addr) + blr + +bpf_slow_path_byte_msh_neg: + lis r_scratch1,-32 /* SKF_LL_OFF */ + cmpd r_addr, r_scratch1 /* addr < SKF_* */ + blt bpf_error /* cr0 = LT */ + .globl sk_load_byte_msh_negative_offset +sk_load_byte_msh_negative_offset: + sk_negative_common(1) + lbz r_X, 0(r_addr) + rlwinm r_X, r_X, 2, 32-4-2, 31-2 + blr + +bpf_error_slow: + /* fabricate a cr0 = lt */ + li r_scratch1, -1 + cmpdi r_scratch1, 0 +bpf_error: + /* Entered with cr0 = lt */ + li r3, 0 + /* Generated code will 'blt epilogue', returning 0. */ + blr diff --git a/arch/powerpc/net/bpf_jit_comp.c b/arch/powerpc/net/bpf_jit_comp.c index 73619d3..2dc8b14 100644 --- a/arch/powerpc/net/bpf_jit_comp.c +++ b/arch/powerpc/net/bpf_jit_comp.c @@ -127,6 +127,9 @@ static void bpf_jit_build_epilogue(u32 *image, struct codegen_context *ctx) PPC_BLR(); } +#define CHOOSE_LOAD_FUNC(K, func) \ + ((int)K < 0 ? ((int)K >= SKF_LL_OFF ? func##_negative_offset : func) : func##_positive_offset) + /* Assemble the body code between the prologue & epilogue. */ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, struct codegen_context *ctx, @@ -391,21 +394,16 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, /*** Absolute loads from packet header/data ***/ case BPF_S_LD_W_ABS: - func = sk_load_word; + func = CHOOSE_LOAD_FUNC(K, sk_load_word); goto common_load; case BPF_S_LD_H_ABS: - func = sk_load_half; + func = CHOOSE_LOAD_FUNC(K, sk_load_half); goto common_load; case BPF_S_LD_B_ABS: - func = sk_load_byte; + func = CHOOSE_LOAD_FUNC(K, sk_load_byte); common_load: - /* - * Load from [K]. Reference with the (negative) - * SKF_NET_OFF/SKF_LL_OFF offsets is unsupported. - */ + /* Load from [K]. */ ctx->seen |= SEEN_DATAREF; - if ((int)K < 0) - return -ENOTSUPP; PPC_LI64(r_scratch1, func); PPC_MTLR(r_scratch1); PPC_LI32(r_addr, K); @@ -429,7 +427,7 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, common_load_ind: /* * Load from [X + K]. Negative offsets are tested for - * in the helper functions, and result in a 'ret 0'. + * in the helper functions. */ ctx->seen |= SEEN_DATAREF | SEEN_XREG; PPC_LI64(r_scratch1, func); @@ -443,13 +441,7 @@ static int bpf_jit_build_body(struct sk_filter *fp, u32 *image, break; case BPF_S_LDX_B_MSH: - /* - * x86 version drops packet (RET 0) when K<0, whereas - * interpreter does allow K<0 (__load_pointer, special - * ancillary data). common_load returns ENOTSUPP if K<0, - * so we fall back to interpreter & filter works. - */ - func = sk_load_byte_msh; + func = CHOOSE_LOAD_FUNC(K, sk_load_byte_msh); goto common_load; break; -- cgit v1.1 From 1cebce36d660c83bd1353e41f3e66abd4686f215 Mon Sep 17 00:00:00 2001 From: Yuchung Cheng Date: Mon, 30 Apr 2012 06:00:18 +0000 Subject: tcp: fix infinite cwnd in tcp_complete_cwr() When the cwnd reduction is done, ssthresh may be infinite if TCP enters CWR via ECN or F-RTO. If cwnd is not undone, i.e., undo_marker is set, tcp_complete_cwr() falsely set cwnd to the infinite ssthresh value. The correct operation is to keep cwnd intact because it has been updated in ECN or F-RTO. Signed-off-by: Yuchung Cheng Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 2a702e3..d99efd7 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -2868,11 +2868,14 @@ static inline void tcp_complete_cwr(struct sock *sk) /* Do not moderate cwnd if it's already undone in cwr or recovery. */ if (tp->undo_marker) { - if (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR) + if (inet_csk(sk)->icsk_ca_state == TCP_CA_CWR) { tp->snd_cwnd = min(tp->snd_cwnd, tp->snd_ssthresh); - else /* PRR */ + tp->snd_cwnd_stamp = tcp_time_stamp; + } else if (tp->snd_ssthresh < TCP_INFINITE_SSTHRESH) { + /* PRR algorithm. */ tp->snd_cwnd = tp->snd_ssthresh; - tp->snd_cwnd_stamp = tcp_time_stamp; + tp->snd_cwnd_stamp = tcp_time_stamp; + } } tcp_ca_event(sk, CA_EVENT_COMPLETE_CWR); } -- cgit v1.1 From 66f2c99af3d6f2d0aa1120884cf1c60613ef61c0 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 29 Apr 2012 15:44:16 +0200 Subject: mac80211: fix AP mode EAP tx for VLAN stations EAP frames for stations in an AP VLAN are sent on the main AP interface to avoid race conditions wrt. moving stations. For that to work properly, sta_info_get_bss must be used instead of sta_info_get when sending EAP packets. Previously this was only done for cooked monitor injected packets, so this patch adds a check for tx->skb->protocol to the same place. Signed-off-by: Felix Fietkau Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- net/mac80211/tx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index 782a601..e76facc 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -1158,7 +1158,8 @@ ieee80211_tx_prepare(struct ieee80211_sub_if_data *sdata, tx->sta = rcu_dereference(sdata->u.vlan.sta); if (!tx->sta && sdata->dev->ieee80211_ptr->use_4addr) return TX_DROP; - } else if (info->flags & IEEE80211_TX_CTL_INJECTED) { + } else if (info->flags & IEEE80211_TX_CTL_INJECTED || + tx->sdata->control_port_protocol == tx->skb->protocol) { tx->sta = sta_info_get_bss(sdata, hdr->addr1); } if (!tx->sta) -- cgit v1.1 From 8a7dc4b04b22be285ea5bef7d01a02f91e30d562 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Mon, 30 Apr 2012 12:25:31 -0700 Subject: nfsd: fix nfs4recover.c printk format warning Fix printk format warnings -- both items are size_t, so use %zu to print them. fs/nfsd/nfs4recover.c:580:3: warning: format '%lu' expects type 'long unsigned int', but argument 3 has type 'size_t' fs/nfsd/nfs4recover.c:580:3: warning: format '%lu' expects type 'long unsigned int', but argument 4 has type 'unsigned int' Signed-off-by: Randy Dunlap Cc: "J. Bruce Fields" Cc: linux-nfs@vger.kernel.org Signed-off-by: Linus Torvalds --- fs/nfsd/nfs4recover.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 4767429..ed3f920 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -577,7 +577,7 @@ cld_pipe_downcall(struct file *filp, const char __user *src, size_t mlen) struct cld_net *cn = nn->cld_net; if (mlen != sizeof(*cmsg)) { - dprintk("%s: got %lu bytes, expected %lu\n", __func__, mlen, + dprintk("%s: got %zu bytes, expected %zu\n", __func__, mlen, sizeof(*cmsg)); return -EINVAL; } -- cgit v1.1 From f5c2347ee20a8d6964d6a6b1ad04f200f8d4dfa7 Mon Sep 17 00:00:00 2001 From: "H. Peter Anvin" Date: Thu, 26 Apr 2012 11:45:16 -0700 Subject: asm-generic: Use __BITS_PER_LONG in statfs.h is exported to userspace, so using BITS_PER_LONG is invalid. We need to use __BITS_PER_LONG instead. This is kernel bugzilla 43165. Reported-by: H.J. Lu Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/r/1335465916-16965-1-git-send-email-hpa@linux.intel.com Acked-by: Arnd Bergmann Cc: --- include/asm-generic/statfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/asm-generic/statfs.h b/include/asm-generic/statfs.h index 0fd28e0..c749af9 100644 --- a/include/asm-generic/statfs.h +++ b/include/asm-generic/statfs.h @@ -15,7 +15,7 @@ typedef __kernel_fsid_t fsid_t; * with a 10' pole. */ #ifndef __statfs_word -#if BITS_PER_LONG == 64 +#if __BITS_PER_LONG == 64 #define __statfs_word long #else #define __statfs_word __u32 -- cgit v1.1 From 7c77cda0fe742ed07622827ce80963bbeebd1e3f Mon Sep 17 00:00:00 2001 From: Kusanagi Kouichi Date: Sun, 1 Apr 2012 17:29:32 +0900 Subject: x86, relocs: Remove an unused variable sh_symtab is set but not used. [ hpa: putting this in urgent because of the sheer harmlessness of the patch: it quiets a build warning but does not change any generated code. ] Signed-off-by: Kusanagi Kouichi Link: http://lkml.kernel.org/r/20120401082932.D5E066FC03D@msa105.auone-net.jp Signed-off-by: H. Peter Anvin Cc: --- arch/x86/boot/compressed/relocs.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/x86/boot/compressed/relocs.c b/arch/x86/boot/compressed/relocs.c index d3c0b02..fb7117a 100644 --- a/arch/x86/boot/compressed/relocs.c +++ b/arch/x86/boot/compressed/relocs.c @@ -403,13 +403,11 @@ static void print_absolute_symbols(void) for (i = 0; i < ehdr.e_shnum; i++) { struct section *sec = &secs[i]; char *sym_strtab; - Elf32_Sym *sh_symtab; int j; if (sec->shdr.sh_type != SHT_SYMTAB) { continue; } - sh_symtab = sec->symtab; sym_strtab = sec->link->strtab; for (j = 0; j < sec->shdr.sh_size/sizeof(Elf32_Sym); j++) { Elf32_Sym *sym; -- cgit v1.1 From 41b3254c93acc56adc3c4477fef7c9512d47659e Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Mon, 30 Apr 2012 16:11:29 -0400 Subject: efi: Add new variable attributes More recent versions of the UEFI spec have added new attributes for variables. Add them. Signed-off-by: Matthew Garrett Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- include/linux/efi.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/include/linux/efi.h b/include/linux/efi.h index 88ec806..ec45ccd 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -554,7 +554,18 @@ extern int __init efi_setup_pcdp_console(char *); #define EFI_VARIABLE_NON_VOLATILE 0x0000000000000001 #define EFI_VARIABLE_BOOTSERVICE_ACCESS 0x0000000000000002 #define EFI_VARIABLE_RUNTIME_ACCESS 0x0000000000000004 - +#define EFI_VARIABLE_HARDWARE_ERROR_RECORD 0x0000000000000008 +#define EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS 0x0000000000000010 +#define EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS 0x0000000000000020 +#define EFI_VARIABLE_APPEND_WRITE 0x0000000000000040 + +#define EFI_VARIABLE_MASK (EFI_VARIABLE_NON_VOLATILE | \ + EFI_VARIABLE_BOOTSERVICE_ACCESS | \ + EFI_VARIABLE_RUNTIME_ACCESS | \ + EFI_VARIABLE_HARDWARE_ERROR_RECORD | \ + EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \ + EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \ + EFI_VARIABLE_APPEND_WRITE) /* * The type of search to perform when calling boottime->locate_handle */ -- cgit v1.1 From fec6c20b570bcf541e581fc97f2e0cbdb9725b98 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Mon, 30 Apr 2012 16:11:30 -0400 Subject: efi: Validate UEFI boot variables A common flaw in UEFI systems is a refusal to POST triggered by a malformed boot variable. Once in this state, machines may only be restored by reflashing their firmware with an external hardware device. While this is obviously a firmware bug, the serious nature of the outcome suggests that operating systems should filter their variable writes in order to prevent a malicious user from rendering the machine unusable. Signed-off-by: Matthew Garrett Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- drivers/firmware/efivars.c | 182 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 182 insertions(+) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index d25599f..891e467 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -191,6 +191,176 @@ utf16_strncmp(const efi_char16_t *a, const efi_char16_t *b, size_t len) } } +static bool +validate_device_path(struct efi_variable *var, int match, u8 *buffer, int len) +{ + struct efi_generic_dev_path *node; + int offset = 0; + + node = (struct efi_generic_dev_path *)buffer; + + while (offset < len) { + offset += node->length; + + if (offset > len) + return false; + + if ((node->type == EFI_DEV_END_PATH || + node->type == EFI_DEV_END_PATH2) && + node->sub_type == EFI_DEV_END_ENTIRE) + return true; + + node = (struct efi_generic_dev_path *)(buffer + offset); + } + + /* + * If we're here then either node->length pointed past the end + * of the buffer or we reached the end of the buffer without + * finding a device path end node. + */ + return false; +} + +static bool +validate_boot_order(struct efi_variable *var, int match, u8 *buffer, int len) +{ + /* An array of 16-bit integers */ + if ((len % 2) != 0) + return false; + + return true; +} + +static bool +validate_load_option(struct efi_variable *var, int match, u8 *buffer, int len) +{ + u16 filepathlength; + int i, desclength = 0; + + /* Either "Boot" or "Driver" followed by four digits of hex */ + for (i = match; i < match+4; i++) { + if (hex_to_bin(var->VariableName[i] & 0xff) < 0) + return true; + } + + /* A valid entry must be at least 6 bytes */ + if (len < 6) + return false; + + filepathlength = buffer[4] | buffer[5] << 8; + + /* + * There's no stored length for the description, so it has to be + * found by hand + */ + desclength = utf16_strsize((efi_char16_t *)(buffer + 6), len) + 2; + + /* Each boot entry must have a descriptor */ + if (!desclength) + return false; + + /* + * If the sum of the length of the description, the claimed filepath + * length and the original header are greater than the length of the + * variable, it's malformed + */ + if ((desclength + filepathlength + 6) > len) + return false; + + /* + * And, finally, check the filepath + */ + return validate_device_path(var, match, buffer + desclength + 6, + filepathlength); +} + +static bool +validate_uint16(struct efi_variable *var, int match, u8 *buffer, int len) +{ + /* A single 16-bit integer */ + if (len != 2) + return false; + + return true; +} + +static bool +validate_ascii_string(struct efi_variable *var, int match, u8 *buffer, int len) +{ + int i; + + for (i = 0; i < len; i++) { + if (buffer[i] > 127) + return false; + + if (buffer[i] == 0) + return true; + } + + return false; +} + +struct variable_validate { + char *name; + bool (*validate)(struct efi_variable *var, int match, u8 *data, + int len); +}; + +static const struct variable_validate variable_validate[] = { + { "BootNext", validate_uint16 }, + { "BootOrder", validate_boot_order }, + { "DriverOrder", validate_boot_order }, + { "Boot*", validate_load_option }, + { "Driver*", validate_load_option }, + { "ConIn", validate_device_path }, + { "ConInDev", validate_device_path }, + { "ConOut", validate_device_path }, + { "ConOutDev", validate_device_path }, + { "ErrOut", validate_device_path }, + { "ErrOutDev", validate_device_path }, + { "Timeout", validate_uint16 }, + { "Lang", validate_ascii_string }, + { "PlatformLang", validate_ascii_string }, + { "", NULL }, +}; + +static bool +validate_var(struct efi_variable *var, u8 *data, int len) +{ + int i; + u16 *unicode_name = var->VariableName; + + for (i = 0; variable_validate[i].validate != NULL; i++) { + const char *name = variable_validate[i].name; + int match; + + for (match = 0; ; match++) { + char c = name[match]; + u16 u = unicode_name[match]; + + /* All special variables are plain ascii */ + if (u > 127) + return true; + + /* Wildcard in the matching name means we've matched */ + if (c == '*') + return variable_validate[i].validate(var, + match, data, len); + + /* Case sensitive match */ + if (c != u) + break; + + /* Reached the end of the string while matching */ + if (!c) + return variable_validate[i].validate(var, + match, data, len); + } + } + + return true; +} + static efi_status_t get_var_data_locked(struct efivars *efivars, struct efi_variable *var) { @@ -324,6 +494,12 @@ efivar_store_raw(struct efivar_entry *entry, const char *buf, size_t count) return -EINVAL; } + if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 || + validate_var(new_var, new_var->Data, new_var->DataSize) == false) { + printk(KERN_ERR "efivars: Malformed variable content\n"); + return -EINVAL; + } + spin_lock(&efivars->lock); status = efivars->ops->set_variable(new_var->VariableName, &new_var->VendorGuid, @@ -626,6 +802,12 @@ static ssize_t efivar_create(struct file *filp, struct kobject *kobj, if (!capable(CAP_SYS_ADMIN)) return -EACCES; + if ((new_var->Attributes & ~EFI_VARIABLE_MASK) != 0 || + validate_var(new_var, new_var->Data, new_var->DataSize) == false) { + printk(KERN_ERR "efivars: Malformed variable content\n"); + return -EINVAL; + } + spin_lock(&efivars->lock); /* -- cgit v1.1 From 30facd4d51d630b6cba386badd7f42456962089b Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 30 Apr 2012 20:11:55 +0100 Subject: ASoC: wm8350: Don't use locally allocated codec struct The core allocates the live copies, we shouldn't try to duplicate it and were buggy trying to do so as we were using uninitialised data for the control data. Signed-off-by: Mark Brown --- sound/soc/codecs/wm8350.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c index 8c4c959..aa12c6b 100644 --- a/sound/soc/codecs/wm8350.c +++ b/sound/soc/codecs/wm8350.c @@ -60,7 +60,7 @@ struct wm8350_jack_data { }; struct wm8350_data { - struct snd_soc_codec codec; + struct wm8350 *wm8350; struct wm8350_output out1; struct wm8350_output out2; struct wm8350_jack_data hpl; @@ -1309,7 +1309,7 @@ static void wm8350_hp_work(struct wm8350_data *priv, struct wm8350_jack_data *jack, u16 mask) { - struct wm8350 *wm8350 = priv->codec.control_data; + struct wm8350 *wm8350 = priv->wm8350; u16 reg; int report; @@ -1342,7 +1342,7 @@ static void wm8350_hpr_work(struct work_struct *work) static irqreturn_t wm8350_hp_jack_handler(int irq, void *data) { struct wm8350_data *priv = data; - struct wm8350 *wm8350 = priv->codec.control_data; + struct wm8350 *wm8350 = priv->wm8350; struct wm8350_jack_data *jack = NULL; switch (irq - wm8350->irq_base) { @@ -1427,7 +1427,7 @@ EXPORT_SYMBOL_GPL(wm8350_hp_jack_detect); static irqreturn_t wm8350_mic_handler(int irq, void *data) { struct wm8350_data *priv = data; - struct wm8350 *wm8350 = priv->codec.control_data; + struct wm8350 *wm8350 = priv->wm8350; u16 reg; int report = 0; @@ -1536,6 +1536,8 @@ static int wm8350_codec_probe(struct snd_soc_codec *codec) return -ENOMEM; snd_soc_codec_set_drvdata(codec, priv); + priv->wm8350 = wm8350; + for (i = 0; i < ARRAY_SIZE(supply_names); i++) priv->supplies[i].supply = supply_names[i]; @@ -1544,7 +1546,6 @@ static int wm8350_codec_probe(struct snd_soc_codec *codec) if (ret != 0) return ret; - wm8350->codec.codec = codec; codec->control_data = wm8350; /* Put the codec into reset if it wasn't already */ -- cgit v1.1 From 06412088ce98f745405b8f65cfc51ddd6b842bbf Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Heiko=20St=C3=BCbner?= Date: Mon, 30 Apr 2012 13:17:21 +0200 Subject: ASoC: s3c2412-i2s: Fix dai registration As s3c2412-i2s is using the s3c_i2sv2 it should call the more specialised s3c_i2sv2_register_dai instead of simply calling snd_soc_register_dai. Without this call the snd_soc_dai_ops structure isn't initialised correctly. Signed-off-by: Heiko Stuebner Signed-off-by: Mark Brown --- sound/soc/samsung/s3c2412-i2s.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/samsung/s3c2412-i2s.c b/sound/soc/samsung/s3c2412-i2s.c index 7218507..79fbeea 100644 --- a/sound/soc/samsung/s3c2412-i2s.c +++ b/sound/soc/samsung/s3c2412-i2s.c @@ -166,7 +166,7 @@ static struct snd_soc_dai_driver s3c2412_i2s_dai = { static __devinit int s3c2412_iis_dev_probe(struct platform_device *pdev) { - return snd_soc_register_dai(&pdev->dev, &s3c2412_i2s_dai); + return s3c_i2sv2_register_dai(&pdev->dev, -1, &s3c2412_i2s_dai); } static __devexit int s3c2412_iis_dev_remove(struct platform_device *pdev) -- cgit v1.1 From 7bdd305e024d78cfb4f32a1badeb5562791ee5b8 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:50 +0000 Subject: smsc75xx: mark link down on startup and let PHY interrupt deal with carrier changes This patch fixes the same issue as reported on smsc95xx, where the usb device is connected with no ethernet cable plugged-in. Without this patch sysfs reports the cable as present flag@flag-desktop:~$ cat /sys/class/net/eth0/carrier 1 while it's not: flag@flag-desktop:~$ sudo mii-tool eth0 eth0: no link Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index a234948..b1b4649 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -1212,7 +1212,7 @@ static const struct driver_info smsc75xx_info = { .rx_fixup = smsc75xx_rx_fixup, .tx_fixup = smsc75xx_tx_fixup, .status = smsc75xx_status, - .flags = FLAG_ETHER | FLAG_SEND_ZLP, + .flags = FLAG_ETHER | FLAG_SEND_ZLP | FLAG_LINK_INTR, }; static const struct usb_device_id products[] = { -- cgit v1.1 From cb8722d30c20386e4d4b4bc3a2ceceacd35f818a Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:51 +0000 Subject: smsc75xx: fix mdio reads and writes smsc75xx needs MII_ACCESS_BUSY to be set to correctly trigger mdio I/O. Note smsc75xx is different from smsc95xx in this regard. Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index b1b4649..f97207a 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -171,7 +171,7 @@ static int smsc75xx_mdio_read(struct net_device *netdev, int phy_id, int idx) idx &= dev->mii.reg_num_mask; addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) - | MII_ACCESS_READ; + | MII_ACCESS_READ | MII_ACCESS_BUSY; ret = smsc75xx_write_reg(dev, MII_ACCESS, addr); check_warn_goto_done(ret, "Error writing MII_ACCESS"); @@ -210,7 +210,7 @@ static void smsc75xx_mdio_write(struct net_device *netdev, int phy_id, int idx, idx &= dev->mii.reg_num_mask; addr = ((phy_id << MII_ACCESS_PHY_ADDR_SHIFT) & MII_ACCESS_PHY_ADDR) | ((idx << MII_ACCESS_REG_ADDR_SHIFT) & MII_ACCESS_REG_ADDR) - | MII_ACCESS_WRITE; + | MII_ACCESS_WRITE | MII_ACCESS_BUSY; ret = smsc75xx_write_reg(dev, MII_ACCESS, addr); check_warn_goto_done(ret, "Error writing MII_ACCESS"); -- cgit v1.1 From 4f49add9ad297dab392c14dc60d490364080739b Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:52 +0000 Subject: smsc75xx: add more information to register io failure warnings Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index f97207a..1de7785 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -98,7 +98,7 @@ static int __must_check smsc75xx_read_reg(struct usbnet *dev, u32 index, if (unlikely(ret < 0)) netdev_warn(dev->net, - "Failed to read register index 0x%08x", index); + "Failed to read reg index 0x%08x: %d", index, ret); le32_to_cpus(buf); *data = *buf; @@ -128,7 +128,7 @@ static int __must_check smsc75xx_write_reg(struct usbnet *dev, u32 index, if (unlikely(ret < 0)) netdev_warn(dev->net, - "Failed to write register index 0x%08x", index); + "Failed to write reg index 0x%08x: %d", index, ret); kfree(buf); -- cgit v1.1 From 8a1d59d79fffdad4bb1b3b5d069da4c6c52db2e6 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:53 +0000 Subject: smsc75xx: fix phy init reset loop fix bug in phy_init loop that was ignoring BMCR reset bit, akin to smsc95xx's d946092000698fd204d82a9d239103c656fb63bf Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 1de7785..cc23a58 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -661,7 +661,7 @@ static int smsc75xx_phy_initialize(struct usbnet *dev) bmcr = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, MII_BMCR); check_warn_return(bmcr, "Error reading MII_BMCR"); timeout++; - } while ((bmcr & MII_BMCR) && (timeout < 100)); + } while ((bmcr & BMCR_RESET) && (timeout < 100)); if (timeout >= 100) { netdev_warn(dev->net, "timeout on PHY Reset"); -- cgit v1.1 From b140504aa3903feaba6f6bc77a4478a944fc12d2 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:54 +0000 Subject: smsc75xx: fix phy interrupt acknowledge smsc75xx phy interrupt acknowledge needs an mdio_write to clear PHY_INT_SRC instead of just a read like in smsc95xx. Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index cc23a58..4941782 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -508,9 +508,10 @@ static int smsc75xx_link_reset(struct usbnet *dev) u16 lcladv, rmtadv; int ret; - /* clear interrupt status */ + /* read and write to clear phy interrupt status */ ret = smsc75xx_mdio_read(dev->net, mii->phy_id, PHY_INT_SRC); check_warn_return(ret, "Error reading PHY_INT_SRC"); + smsc75xx_mdio_write(dev->net, mii->phy_id, PHY_INT_SRC, 0xffff); ret = smsc75xx_write_reg(dev, INT_STS, INT_STS_CLEAR_ALL); check_warn_return(ret, "Error writing INT_STS"); @@ -643,7 +644,7 @@ static int smsc75xx_set_mac_address(struct usbnet *dev) static int smsc75xx_phy_initialize(struct usbnet *dev) { - int bmcr, timeout = 0; + int bmcr, ret, timeout = 0; /* Initialize MII structure */ dev->mii.dev = dev->net; @@ -672,9 +673,10 @@ static int smsc75xx_phy_initialize(struct usbnet *dev) ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); - /* read to clear */ - smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); - check_warn_return(bmcr, "Error reading PHY_INT_SRC"); + /* read and write to clear phy interrupt status */ + ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); + check_warn_return(ret, "Error reading PHY_INT_SRC"); + smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_SRC, 0xffff); smsc75xx_mdio_write(dev->net, dev->mii.phy_id, PHY_INT_MASK, PHY_INT_MASK_DEFAULT); -- cgit v1.1 From c0b92e4d44ecaab3cd3f09f9f905306a5989b0d4 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:55 +0000 Subject: smsc75xx: declare smsc75xx's MII as GMII capable also explicitly set the phy to advertise 1000 speeds Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 4941782..ae23d85 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -652,6 +652,7 @@ static int smsc75xx_phy_initialize(struct usbnet *dev) dev->mii.mdio_write = smsc75xx_mdio_write; dev->mii.phy_id_mask = 0x1f; dev->mii.reg_num_mask = 0x1f; + dev->mii.supports_gmii = 1; dev->mii.phy_id = SMSC75XX_INTERNAL_PHY_ID; /* reset phy and wait for reset to complete */ @@ -672,6 +673,8 @@ static int smsc75xx_phy_initialize(struct usbnet *dev) smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_ADVERTISE, ADVERTISE_ALL | ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM); + smsc75xx_mdio_write(dev->net, dev->mii.phy_id, MII_CTRL1000, + ADVERTISE_1000FULL); /* read and write to clear phy interrupt status */ ret = smsc75xx_mdio_read(dev->net, dev->mii.phy_id, PHY_INT_SRC); -- cgit v1.1 From 2f3a081ea2f63cd5b3e549a0040c760d87483f99 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Mon, 30 Apr 2012 07:56:56 +0000 Subject: smsc75xx: enable mac to detect speed/duplex from phy This patch sets the automatic speed and duplex detection bits in MAC_CR to enable the mac to determine its speed automatically from the phy. Note this must be done BEFORE the receiver or transmitter is enabled. Signed-off-by: Stephane Fillod Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index ae23d85..00103a8 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -951,6 +951,14 @@ static int smsc75xx_reset(struct usbnet *dev) ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf); check_warn_return(ret, "Failed to write INT_EP_CTL: %d", ret); + /* allow mac to detect speed and duplex from phy */ + ret = smsc75xx_read_reg(dev, MAC_CR, &buf); + check_warn_return(ret, "Failed to read MAC_CR: %d", ret); + + buf |= (MAC_CR_ADD | MAC_CR_ASD); + ret = smsc75xx_write_reg(dev, MAC_CR, buf); + check_warn_return(ret, "Failed to write MAC_CR: %d", ret); + ret = smsc75xx_read_reg(dev, MAC_TX, &buf); check_warn_return(ret, "Failed to read MAC_TX: %d", ret); -- cgit v1.1 From 9bd1be457d2b9568c3c8f8f6b8e450a501bff402 Mon Sep 17 00:00:00 2001 From: Samuel Liao Date: Fri, 27 Apr 2012 17:09:27 +0000 Subject: igbvf: fix the bug when initializing the igbvf Maybe it's a typo, but it cause that igbvf can't be initialized successfully. Set perm_addr value using valid dev_addr, although which is equal to hw.mac.addr. Signed-off-by: Samuel Liao Signed-off-by: Shan Wei Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igbvf/netdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c index d61ca2a..8ec74b0 100644 --- a/drivers/net/ethernet/intel/igbvf/netdev.c +++ b/drivers/net/ethernet/intel/igbvf/netdev.c @@ -2731,14 +2731,14 @@ static int __devinit igbvf_probe(struct pci_dev *pdev, netdev->addr_len); } - if (!is_valid_ether_addr(netdev->perm_addr)) { + if (!is_valid_ether_addr(netdev->dev_addr)) { dev_err(&pdev->dev, "Invalid MAC Address: %pM\n", netdev->dev_addr); err = -EIO; goto err_hw_init; } - memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); + memcpy(netdev->perm_addr, netdev->dev_addr, netdev->addr_len); setup_timer(&adapter->watchdog_timer, &igbvf_watchdog, (unsigned long) adapter); -- cgit v1.1 From 2b1588c3fafc3fd2b3bc49202a380eaecbbc2193 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Sat, 17 Mar 2012 02:39:16 +0000 Subject: ixgbe: Fix a memory leak in IEEE DCB The driver was freeing memory in shutdown instead of remove. As a result we were leaking memory if IEEE DCB was enabled and we loaded/unloaded the driver. This change moves the freeing of the memory into the remove routine where it belongs. Signed-off-by: Alexander Duyck Acked-by: John Fastabend Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index a7f3cd8..88f6b2e 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4873,10 +4873,6 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) } ixgbe_clear_interrupt_scheme(adapter); -#ifdef CONFIG_DCB - kfree(adapter->ixgbe_ieee_pfc); - kfree(adapter->ixgbe_ieee_ets); -#endif #ifdef CONFIG_PM retval = pci_save_state(pdev); @@ -7224,6 +7220,11 @@ static void __devexit ixgbe_remove(struct pci_dev *pdev) ixgbe_release_hw_control(adapter); +#ifdef CONFIG_DCB + kfree(adapter->ixgbe_ieee_pfc); + kfree(adapter->ixgbe_ieee_ets); + +#endif iounmap(adapter->hw.hw_addr); pci_release_selected_regions(pdev, pci_select_bars(pdev, IORESOURCE_MEM)); -- cgit v1.1 From 441e1719f21356ef84d2debc6ca3e6d07e6c8889 Mon Sep 17 00:00:00 2001 From: Yi Zou Date: Fri, 20 Apr 2012 05:48:08 +0000 Subject: ixgbe: fix calling skb_put on nonlinear skb assertion bug With the support to bounce buffer added, the skb is coming as nonlinear in the case of non-DDPed data frames for FCoE, which is mostly ok as the FCoE stack would take care of that. However, for target mode, we have to set the FC CRC and FC EOF field to allow the protocol stack to not drop the frame for the last data frame of that sequence. So fix this by linearizing the skb first before doing skb_put(). Signed-off-by: Yi Zou Tested-by: Marcus Dennis Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c index 77ea4b7..bc07933 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c @@ -437,6 +437,7 @@ int ixgbe_fcoe_ddp(struct ixgbe_adapter *adapter, */ if ((fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA) && (fctl & FC_FC_END_SEQ)) { + skb_linearize(skb); crc = (struct fcoe_crc_eof *)skb_put(skb, sizeof(*crc)); crc->fcoe_eof = FC_EOF_T; } -- cgit v1.1 From 60158e64641fd8c780a6d14de2bf42aabc419916 Mon Sep 17 00:00:00 2001 From: Roland Dreier Date: Mon, 30 Apr 2012 07:15:47 +0000 Subject: cxgb3: Don't call cxgb_vlan_mode until q locks are initialized The driver calls cxgb_vlan_mode() from init_one(). This calls into synchronize_rx(), which locks all the q locks, but the q locks are not initialized until cxgb_up() -> setup_sge_qsets(). So move the call to cxgb_vlan_mode() into cxgb_up(), after the call to setup_sge_qsets(). We also move the body of these functions up higher to avoid having to a forward declaration. This was found because of the lockdep warning: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. Pid: 323, comm: work_for_cpu Not tainted 3.4.0-rc5 #28 Call Trace: [] register_lock_class+0x108/0x2d0 [] __lock_acquire+0xd3/0xd06 [] lock_acquire+0xbf/0xfe [] _raw_spin_lock_irq+0x36/0x45 [] cxgb_vlan_mode+0x96/0xcb [cxgb3] [] init_one+0x8c4/0x980 [cxgb3] [] local_pci_probe+0x3f/0x70 [] do_work_for_cpu+0x10/0x22 [] kthread+0xa1/0xa9 [] kernel_thread_helper+0x4/0x10 Contrary to what lockdep says, the code is not fine: we are locking an uninitialized spinlock. Signed-off-by: Roland Dreier Signed-off-by: David S. Miller --- drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c | 92 ++++++++++++------------- 1 file changed, 46 insertions(+), 46 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c index 63bfdd1..abb6ce7 100644 --- a/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c +++ b/drivers/net/ethernet/chelsio/cxgb3/cxgb3_main.c @@ -1150,6 +1150,48 @@ release_tpsram: } /** + * t3_synchronize_rx - wait for current Rx processing on a port to complete + * @adap: the adapter + * @p: the port + * + * Ensures that current Rx processing on any of the queues associated with + * the given port completes before returning. We do this by acquiring and + * releasing the locks of the response queues associated with the port. + */ +static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p) +{ + int i; + + for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { + struct sge_rspq *q = &adap->sge.qs[i].rspq; + + spin_lock_irq(&q->lock); + spin_unlock_irq(&q->lock); + } +} + +static void cxgb_vlan_mode(struct net_device *dev, netdev_features_t features) +{ + struct port_info *pi = netdev_priv(dev); + struct adapter *adapter = pi->adapter; + + if (adapter->params.rev > 0) { + t3_set_vlan_accel(adapter, 1 << pi->port_id, + features & NETIF_F_HW_VLAN_RX); + } else { + /* single control for all ports */ + unsigned int i, have_vlans = features & NETIF_F_HW_VLAN_RX; + + for_each_port(adapter, i) + have_vlans |= + adapter->port[i]->features & NETIF_F_HW_VLAN_RX; + + t3_set_vlan_accel(adapter, 1, have_vlans); + } + t3_synchronize_rx(adapter, pi); +} + +/** * cxgb_up - enable the adapter * @adapter: adapter being enabled * @@ -1161,7 +1203,7 @@ release_tpsram: */ static int cxgb_up(struct adapter *adap) { - int err; + int i, err; if (!(adap->flags & FULL_INIT_DONE)) { err = t3_check_fw_version(adap); @@ -1198,6 +1240,9 @@ static int cxgb_up(struct adapter *adap) if (err) goto out; + for_each_port(adap, i) + cxgb_vlan_mode(adap->port[i], adap->port[i]->features); + setup_rss(adap); if (!(adap->flags & NAPI_INIT)) init_napi(adap); @@ -2508,48 +2553,6 @@ static int cxgb_set_mac_addr(struct net_device *dev, void *p) return 0; } -/** - * t3_synchronize_rx - wait for current Rx processing on a port to complete - * @adap: the adapter - * @p: the port - * - * Ensures that current Rx processing on any of the queues associated with - * the given port completes before returning. We do this by acquiring and - * releasing the locks of the response queues associated with the port. - */ -static void t3_synchronize_rx(struct adapter *adap, const struct port_info *p) -{ - int i; - - for (i = p->first_qset; i < p->first_qset + p->nqsets; i++) { - struct sge_rspq *q = &adap->sge.qs[i].rspq; - - spin_lock_irq(&q->lock); - spin_unlock_irq(&q->lock); - } -} - -static void cxgb_vlan_mode(struct net_device *dev, netdev_features_t features) -{ - struct port_info *pi = netdev_priv(dev); - struct adapter *adapter = pi->adapter; - - if (adapter->params.rev > 0) { - t3_set_vlan_accel(adapter, 1 << pi->port_id, - features & NETIF_F_HW_VLAN_RX); - } else { - /* single control for all ports */ - unsigned int i, have_vlans = features & NETIF_F_HW_VLAN_RX; - - for_each_port(adapter, i) - have_vlans |= - adapter->port[i]->features & NETIF_F_HW_VLAN_RX; - - t3_set_vlan_accel(adapter, 1, have_vlans); - } - t3_synchronize_rx(adapter, pi); -} - static netdev_features_t cxgb_fix_features(struct net_device *dev, netdev_features_t features) { @@ -3353,9 +3356,6 @@ static int __devinit init_one(struct pci_dev *pdev, err = sysfs_create_group(&adapter->port[0]->dev.kobj, &cxgb3_attr_group); - for_each_port(adapter, i) - cxgb_vlan_mode(adapter->port[i], adapter->port[i]->features); - print_port_info(adapter, ai); return 0; -- cgit v1.1 From 13176a89e1c4a0011bd9f576730b0338ecb619ff Mon Sep 17 00:00:00 2001 From: Russ Dill Date: Sun, 22 Apr 2012 01:48:18 -0700 Subject: mfd: Fix build breakage in omap-usb-host.c 'ARM: OMAP3: USB: Fix the EHCI ULPI PHY reset issue' removes the include for linux/gpio.h from omap-usb-host.c. This include indirectly includes plat/cpu.h which is required by omap-usb-host.c. Fix the build breakage by including it directly. Acked-by: Keshava Munegowda Acked-by: Kevin Hilman Tested-by: Arend van Spriel Signed-off-by: Russ Dill Signed-off-by: Samuel Ortiz --- drivers/mfd/omap-usb-host.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c index c8aae66..7e96bb2 100644 --- a/drivers/mfd/omap-usb-host.c +++ b/drivers/mfd/omap-usb-host.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include -- cgit v1.1 From 5158ba3ea7fc8c3deafec769a32bc6eb869c3608 Mon Sep 17 00:00:00 2001 From: Russ Dill Date: Mon, 23 Apr 2012 19:43:00 -0700 Subject: ktest.pl: Fix combined usage of BISECT_REVERSE and BISECT_SKIP When BISECT_REVERSE and BISECT_SKIP are used together with boot or test testing, build failures are treated as boot or test failures and 'git bisect bad' is executed instead of 'git bisect skip'. This is because the $ret value of -1 is treated as a build failure, but the $reverse_bisect logic does not properly handle this. Simple fix, only invert it if it is positive. Link: http://lkml.kernel.org/r/1335235380-8509-1-git-send-email-Russ.Dill@ti.com Signed-off-by: Russ Dill Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index 95d6a6f..d2ede59 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -2192,7 +2192,7 @@ sub run_bisect { } # Are we looking for where it worked, not failed? - if ($reverse_bisect) { + if ($reverse_bisect && $ret >= 0) { $ret = !$ret; } -- cgit v1.1 From 759a3cc625e77161ae457459489178dd0921524e Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Tue, 1 May 2012 08:20:12 -0400 Subject: ktest: Fix reboot on success stopping all reboots The change to let individual tests decide to reboot the machine on success of the entire test also prevented errors from rebooting when an error was detected. The "no_reboot" variable was only cleared if the test had reboot_on_success set. But the no_reboot variable also prevents the test rebooting when an error was detected even when REBOOT_ON_ERROR was set. Add a new "reboot_success" variable that is used to determine if the test should reboot on success and not touch the no_reboot variable. Signed-off-by: Steven Rostedt --- tools/testing/ktest/ktest.pl | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl index d2ede59..4915408 100755 --- a/tools/testing/ktest/ktest.pl +++ b/tools/testing/ktest/ktest.pl @@ -183,6 +183,9 @@ my %force_config; # do not force reboots on config problems my $no_reboot = 1; +# reboot on success +my $reboot_success = 0; + my %option_map = ( "MACHINE" => \$machine, "SSH_USER" => \$ssh_user, @@ -3469,6 +3472,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { # Do not reboot on failing test options $no_reboot = 1; + $reboot_success = 0; $iteration = $i; @@ -3554,9 +3558,11 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { die "failed to checkout $checkout"; } + $no_reboot = 0; + # A test may opt to not reboot the box if ($reboot_on_success) { - $no_reboot = 0; + $reboot_success = 1; } if ($test_type eq "bisect") { @@ -3600,7 +3606,7 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) { if ($opt{"POWEROFF_ON_SUCCESS"}) { halt; -} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot) { +} elsif ($opt{"REBOOT_ON_SUCCESS"} && !do_not_reboot && $reboot_success) { reboot_to_good; } elsif (defined($switch_to_good)) { # still need to get to the good kernel -- cgit v1.1 From d961949660fa1c1b7eb0c3a3c157989c90f14e8e Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Mon, 30 Apr 2012 21:29:16 +0000 Subject: net: fix two typos in skbuff.h fix kernel doc typos in function names Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- include/linux/skbuff.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 775292a..111f26b 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -1020,7 +1020,7 @@ static inline void skb_queue_splice(const struct sk_buff_head *list, } /** - * skb_queue_splice - join two skb lists and reinitialise the emptied list + * skb_queue_splice_init - join two skb lists and reinitialise the emptied list * @list: the new list to add * @head: the place to add it in the first list * @@ -1051,7 +1051,7 @@ static inline void skb_queue_splice_tail(const struct sk_buff_head *list, } /** - * skb_queue_splice_tail - join two skb lists and reinitialise the emptied list + * skb_queue_splice_tail_init - join two skb lists and reinitialise the emptied list * @list: the new list to add * @head: the place to add it in the first list * -- cgit v1.1 From b704871124b477807966f06789c2b32f2de58bf7 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Mon, 30 Apr 2012 09:18:01 -0400 Subject: hwmon: (coretemp) fix oops on cpu unplug coretemp tries to access core_data array beyond bounds on cpu unplug if core id of the cpu if more than NUM_REAL_CORES-1. BUG: unable to handle kernel NULL pointer dereference at 000000000000013c IP: [] coretemp_cpu_callback+0x93/0x1ba [coretemp] PGD 673e5a067 PUD 66e9b3067 PMD 0 Oops: 0000 [#1] SMP CPU 79 Modules linked in: sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf bnep bluetooth rfkill ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter nf_conntrack_ipv4 nf_defrag_ipv4 ip6_tables xt_state nf_conntrack coretemp crc32c_intel asix tpm_tis pcspkr usbnet iTCO_wdt i2c_i801 microcode mii joydev tpm i2c_core iTCO_vendor_support tpm_bios i7core_edac igb ioatdma edac_core dca megaraid_sas [last unloaded: oprofile] Pid: 3315, comm: set-cpus Tainted: G W 3.4.0-rc5+ #2 QCI QSSC-S4R/QSSC-S4R RIP: 0010:[] [] coretemp_cpu_callback+0x93/0x1ba [coretemp] RSP: 0018:ffff880472fb3d48 EFLAGS: 00010246 RAX: 0000000000000124 RBX: 0000000000000034 RCX: 00000000ffffffff RDX: 0000000000000000 RSI: 0000000000000046 RDI: 0000000000000246 RBP: ffff880472fb3d88 R08: ffff88077fcd36c0 R09: 0000000000000001 R10: ffffffff8184bc48 R11: 0000000000000000 R12: ffff880273095800 R13: 0000000000000013 R14: ffff8802730a1810 R15: 0000000000000000 FS: 00007f694a20f720(0000) GS:ffff88077fcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 000000000000013c CR3: 000000067209b000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process set-cpus (pid: 3315, threadinfo ffff880472fb2000, task ffff880471fa0000) Stack: ffff880277b4c308 0000000000000003 ffff880472fb3d88 0000000000000005 0000000000000034 00000000ffffffd1 ffffffff81cadc70 ffff880472fb3e14 ffff880472fb3dc8 ffffffff8161f48d ffff880471fa0000 0000000000000034 Call Trace: [] notifier_call_chain+0x4d/0x70 [] __raw_notifier_call_chain+0xe/0x10 [] __cpu_notify+0x20/0x40 [] _cpu_down+0x81/0x270 [] cpu_down+0x37/0x50 [] store_online+0x63/0xc0 [] dev_attr_store+0x18/0x30 [] sysfs_write_file+0xef/0x170 [] vfs_write+0xb3/0x180 [] sys_write+0x4a/0x90 [] system_call_fastpath+0x16/0x1b Code: 48 c7 c7 94 60 01 a0 44 0f b7 ac 10 ac 00 00 00 31 c0 e8 41 b7 5f e1 41 83 c5 02 49 63 c5 49 8b 44 c4 10 48 85 c0 74 56 45 31 ff <39> 58 18 75 4e eb 1f 49 63 d7 4c 89 f7 48 89 45 c8 48 6b d2 28 RIP [] coretemp_cpu_callback+0x93/0x1ba [coretemp] RSP CR2: 000000000000013c Signed-off-by: Kirill A. Shutemov Cc: stable@vger.kernel.org # 3.0+ Signed-off-by: Guenter Roeck --- drivers/hwmon/coretemp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 0d3141f..54a70fe 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -709,6 +709,10 @@ static void __cpuinit put_core_offline(unsigned int cpu) indx = TO_ATTR_NO(cpu); + /* The core id is too big, just return */ + if (indx > MAX_CORE_DATA - 1) + return; + if (pdata->core_data[indx] && pdata->core_data[indx]->cpu == cpu) coretemp_remove_core(pdata, &pdev->dev, indx); -- cgit v1.1 From bdc71c9a87b898e4c380c23b2e3e18071312ecde Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Tue, 1 May 2012 08:15:42 -0700 Subject: hwmon: (coretemp) Increase CPU core limit CPU core ID is used to index the core_data[] array. The core ID is, however, not sequential; 10-core CPUS can have a core ID as high as 25. Increase the limit to 32 to be able to deal with current CPUs. Signed-off-by: Guenter Roeck Cc: stable@vger.kernel.org # 3.0+ Acked-by: Jean Delvare Acked-by: Durgadoss R --- drivers/hwmon/coretemp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c index 54a70fe..b9d5123 100644 --- a/drivers/hwmon/coretemp.c +++ b/drivers/hwmon/coretemp.c @@ -52,7 +52,7 @@ module_param_named(tjmax, force_tjmax, int, 0444); MODULE_PARM_DESC(tjmax, "TjMax value in degrees Celsius"); #define BASE_SYSFS_ATTR_NO 2 /* Sysfs Base attr no for coretemp */ -#define NUM_REAL_CORES 16 /* Number of Real cores per cpu */ +#define NUM_REAL_CORES 32 /* Number of Real cores per cpu */ #define CORETEMP_NAME_LENGTH 17 /* String Length of attrs */ #define MAX_CORE_ATTRS 4 /* Maximum no of basic attrs */ #define TOTAL_ATTRS (MAX_CORE_ATTRS + 1) -- cgit v1.1 From 3f42941b5d1d13542b1a755a9e4f633aa72e4d3e Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 30 Apr 2012 05:49:45 +0000 Subject: sky2: propogate rx hash when packet is copied When a small packet is received, the driver copies it to a new skb to allow reusing the full size Rx buffer. The copy was propogating the checksum offload but not the receive hash information. The bug is impact was mostly harmless and therefore not observed until reviewing this area of code. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/sky2.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index c9b504e..0ced311 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -2494,8 +2494,11 @@ static struct sk_buff *receive_copy(struct sky2_port *sky2, skb_copy_from_linear_data(re->skb, skb->data, length); skb->ip_summed = re->skb->ip_summed; skb->csum = re->skb->csum; + skb->rxhash = re->skb->rxhash; + pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr, length, PCI_DMA_FROMDEVICE); + re->skb->rxhash = 0; re->skb->ip_summed = CHECKSUM_NONE; skb_put(skb, length); } -- cgit v1.1 From e072b3fad5f3915102c94628b4971f52ff99dd05 Mon Sep 17 00:00:00 2001 From: stephen hemminger Date: Mon, 30 Apr 2012 06:47:37 +0000 Subject: sky2: fix receive length error in mixed non-VLAN/VLAN traffic Bug: The VLAN bit of the MAC RX Status Word is unreliable in several older supported chips. Sometimes the VLAN bit is not set for valid VLAN packets and also sometimes the VLAN bit is set for non-VLAN packets that came after a VLAN packet. This results in a receive length error when VLAN hardware tagging is enabled. Fix: Variation on original fix proposed by Mirko. The VLAN information is decoded in the status loop, and can be applied to the received SKB there. This eliminates the need for the separate tag field in the interface data structure. The tag has to be copied and cleared if packet is copied. This version checked out with vlan and normal traffic. Note: vlan_tx_tag_present should be renamed vlan_tag_present, but that is outside scope of this. Reported-by: Mirko Lindner Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/sky2.c | 28 +++++++++++++++++----------- drivers/net/ethernet/marvell/sky2.h | 1 - 2 files changed, 17 insertions(+), 12 deletions(-) diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 0ced311..487a6c8 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -2495,9 +2495,11 @@ static struct sk_buff *receive_copy(struct sky2_port *sky2, skb->ip_summed = re->skb->ip_summed; skb->csum = re->skb->csum; skb->rxhash = re->skb->rxhash; + skb->vlan_tci = re->skb->vlan_tci; pci_dma_sync_single_for_device(sky2->hw->pdev, re->data_addr, length, PCI_DMA_FROMDEVICE); + re->skb->vlan_tci = 0; re->skb->rxhash = 0; re->skb->ip_summed = CHECKSUM_NONE; skb_put(skb, length); @@ -2583,9 +2585,6 @@ static struct sk_buff *sky2_receive(struct net_device *dev, struct sk_buff *skb = NULL; u16 count = (status & GMR_FS_LEN) >> 16; - if (status & GMR_FS_VLAN) - count -= VLAN_HLEN; /* Account for vlan tag */ - netif_printk(sky2, rx_status, KERN_DEBUG, dev, "rx slot %u status 0x%x len %d\n", sky2->rx_next, status, length); @@ -2593,6 +2592,9 @@ static struct sk_buff *sky2_receive(struct net_device *dev, sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending; prefetch(sky2->rx_ring + sky2->rx_next); + if (vlan_tx_tag_present(re->skb)) + count -= VLAN_HLEN; /* Account for vlan tag */ + /* This chip has hardware problems that generates bogus status. * So do only marginal checking and expect higher level protocols * to handle crap frames. @@ -2650,11 +2652,8 @@ static inline void sky2_tx_done(struct net_device *dev, u16 last) } static inline void sky2_skb_rx(const struct sky2_port *sky2, - u32 status, struct sk_buff *skb) + struct sk_buff *skb) { - if (status & GMR_FS_VLAN) - __vlan_hwaccel_put_tag(skb, be16_to_cpu(sky2->rx_tag)); - if (skb->ip_summed == CHECKSUM_NONE) netif_receive_skb(skb); else @@ -2708,6 +2707,14 @@ static void sky2_rx_checksum(struct sky2_port *sky2, u32 status) } } +static void sky2_rx_tag(struct sky2_port *sky2, u16 length) +{ + struct sk_buff *skb; + + skb = sky2->rx_ring[sky2->rx_next].skb; + __vlan_hwaccel_put_tag(skb, be16_to_cpu(length)); +} + static void sky2_rx_hash(struct sky2_port *sky2, u32 status) { struct sk_buff *skb; @@ -2766,8 +2773,7 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx) } skb->protocol = eth_type_trans(skb, dev); - - sky2_skb_rx(sky2, status, skb); + sky2_skb_rx(sky2, skb); /* Stop after net poll weight */ if (++work_done >= to_do) @@ -2775,11 +2781,11 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx) break; case OP_RXVLAN: - sky2->rx_tag = length; + sky2_rx_tag(sky2, length); break; case OP_RXCHKSVLAN: - sky2->rx_tag = length; + sky2_rx_tag(sky2, length); /* fall through */ case OP_RXCHKS: if (likely(dev->features & NETIF_F_RXCSUM)) diff --git a/drivers/net/ethernet/marvell/sky2.h b/drivers/net/ethernet/marvell/sky2.h index ff6f58b..3c896ce 100644 --- a/drivers/net/ethernet/marvell/sky2.h +++ b/drivers/net/ethernet/marvell/sky2.h @@ -2241,7 +2241,6 @@ struct sky2_port { u16 rx_pending; u16 rx_data_size; u16 rx_nfrags; - u16 rx_tag; struct { unsigned long last; -- cgit v1.1 From 116a0fc31c6c9b8fc821be5a96e5bf0b43260131 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sun, 29 Apr 2012 09:08:22 +0000 Subject: netem: fix possible skb leak skb_checksum_help(skb) can return an error, we must free skb in this case. qdisc_drop(skb, sch) can also be feeded with a NULL skb (if skb_unshare() failed), so lets use this generic helper. Signed-off-by: Eric Dumazet Cc: Stephen Hemminger Signed-off-by: David S. Miller --- net/sched/sch_netem.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c index 5da548f..ebd2296 100644 --- a/net/sched/sch_netem.c +++ b/net/sched/sch_netem.c @@ -408,10 +408,8 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch) if (q->corrupt && q->corrupt >= get_crandom(&q->corrupt_cor)) { if (!(skb = skb_unshare(skb, GFP_ATOMIC)) || (skb->ip_summed == CHECKSUM_PARTIAL && - skb_checksum_help(skb))) { - sch->qstats.drops++; - return NET_XMIT_DROP; - } + skb_checksum_help(skb))) + return qdisc_drop(skb, sch); skb->data[net_random() % skb_headlen(skb)] ^= 1<<(net_random() % 8); } -- cgit v1.1 From 84f904ecd3aa2ccb5779b815b69c1cb592f07bb5 Mon Sep 17 00:00:00 2001 From: Alan Cox Date: Tue, 1 May 2012 16:12:19 +0100 Subject: vt: Fix deadlock on scroll-lock Fixing the locking accidentally replaced a race in the scroll lock handling with a deadlock. Turn it back into a race for now. The basic problem is that there are two paths into the tty stop/start helpers. One via the tty layer ^S/^Q handling where we need to take the kbd_event_lock and one via the special keyboard handler for fn_hold where we already hold it. Probably we need to split out into a separate LED lock but for now just go back to the race as it's a bit close to release. Reported-by: Clemens Ladisch Cc: Jiri Kosina Signed-off-by: Alan Cox Signed-off-by: Greg Kroah-Hartman --- drivers/tty/vt/keyboard.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c index 86dd1e3..29ca20d 100644 --- a/drivers/tty/vt/keyboard.c +++ b/drivers/tty/vt/keyboard.c @@ -1085,15 +1085,21 @@ void vt_set_led_state(int console, int leds) * * Handle console start. This is a wrapper for the VT layer * so that we can keep kbd knowledge internal + * + * FIXME: We eventually need to hold the kbd lock here to protect + * the LED updating. We can't do it yet because fn_hold calls stop_tty + * and start_tty under the kbd_event_lock, while normal tty paths + * don't hold the lock. We probably need to split out an LED lock + * but not during an -rc release! */ void vt_kbd_con_start(int console) { struct kbd_struct * kbd = kbd_table + console; - unsigned long flags; - spin_lock_irqsave(&kbd_event_lock, flags); +/* unsigned long flags; */ +/* spin_lock_irqsave(&kbd_event_lock, flags); */ clr_vc_kbd_led(kbd, VC_SCROLLOCK); set_leds(); - spin_unlock_irqrestore(&kbd_event_lock, flags); +/* spin_unlock_irqrestore(&kbd_event_lock, flags); */ } /** @@ -1102,22 +1108,28 @@ void vt_kbd_con_start(int console) * * Handle console stop. This is a wrapper for the VT layer * so that we can keep kbd knowledge internal + * + * FIXME: We eventually need to hold the kbd lock here to protect + * the LED updating. We can't do it yet because fn_hold calls stop_tty + * and start_tty under the kbd_event_lock, while normal tty paths + * don't hold the lock. We probably need to split out an LED lock + * but not during an -rc release! */ void vt_kbd_con_stop(int console) { struct kbd_struct * kbd = kbd_table + console; - unsigned long flags; - spin_lock_irqsave(&kbd_event_lock, flags); +/* unsigned long flags; */ +/* spin_lock_irqsave(&kbd_event_lock, flags); */ set_vc_kbd_led(kbd, VC_SCROLLOCK); set_leds(); - spin_unlock_irqrestore(&kbd_event_lock, flags); +/* spin_unlock_irqrestore(&kbd_event_lock, flags); */ } /* * This is the tasklet that updates LED state on all keyboards * attached to the box. The reason we use tasklet is that we * need to handle the scenario when keyboard handler is not - * registered yet but we already getting updates form VT to + * registered yet but we already getting updates from the VT to * update led state. */ static void kbd_bh(unsigned long dummy) -- cgit v1.1 From ebf20de453042c066a289b90dd14d59de03dba2f Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Tue, 1 May 2012 11:28:49 -0400 Subject: EHCI: update PM methods in ehci-tegra.c This patch (as1547) rearranges the Power Management parts of the ehci-tegra driver to match the conventions used in other EHCI platform drivers. In particular, the controller should not be powered down by the root hub's suspend routine; the controller's power level should be managed by the controller's own PM methods. The end result of the patch is that the standard ehci_bus_suspend() and ehci_bus_resume() methods can be used instead of special-purpose routines. The driver now uses the standard dev_pm_ops methods instead of legacy power management. Since there is no supported wakeup mechanism for the controller, runtime suspend is forbidden by default (this can be overridden via sysfs, if desired). These adjustments are needed in order to make ehci-tegra compatible with recent changes to the USB core. The core now checks the root hub's status following bus suspend; if the controller is automatically powered down during bus suspend then the check will fail and the root hub will be resumed immediately. Doing the controller power-down in a separate method avoids this problem. Signed-off-by: Alan Stern Acked-by: Stephen Warren Tested-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-tegra.c | 375 ++++++++++++++++++++++-------------------- 1 file changed, 195 insertions(+), 180 deletions(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 8618336..73f3525 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -37,9 +38,7 @@ struct tegra_ehci_hcd { struct clk *emc_clk; struct usb_phy *transceiver; int host_resumed; - int bus_suspended; int port_resuming; - int power_down_on_bus_suspend; enum tegra_usb_phy_port_speed port_speed; }; @@ -273,120 +272,6 @@ static void tegra_ehci_restart(struct usb_hcd *hcd) up_write(&ehci_cf_port_reset_rwsem); } -static int tegra_usb_suspend(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - struct ehci_regs __iomem *hw = tegra->ehci->regs; - unsigned long flags; - - spin_lock_irqsave(&tegra->ehci->lock, flags); - - tegra->port_speed = (readl(&hw->port_status[0]) >> 26) & 0x3; - ehci_halt(tegra->ehci); - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - - spin_unlock_irqrestore(&tegra->ehci->lock, flags); - - tegra_ehci_power_down(hcd); - return 0; -} - -static int tegra_usb_resume(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - struct ehci_hcd *ehci = hcd_to_ehci(hcd); - struct ehci_regs __iomem *hw = ehci->regs; - unsigned long val; - - set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); - tegra_ehci_power_up(hcd); - - if (tegra->port_speed > TEGRA_USB_PHY_PORT_SPEED_HIGH) { - /* Wait for the phy to detect new devices - * before we restart the controller */ - msleep(10); - goto restart; - } - - /* Force the phy to keep data lines in suspend state */ - tegra_ehci_phy_restore_start(tegra->phy, tegra->port_speed); - - /* Enable host mode */ - tdi_reset(ehci); - - /* Enable Port Power */ - val = readl(&hw->port_status[0]); - val |= PORT_POWER; - writel(val, &hw->port_status[0]); - udelay(10); - - /* Check if the phy resume from LP0. When the phy resume from LP0 - * USB register will be reset. */ - if (!readl(&hw->async_next)) { - /* Program the field PTC based on the saved speed mode */ - val = readl(&hw->port_status[0]); - val &= ~PORT_TEST(~0); - if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_HIGH) - val |= PORT_TEST_FORCE; - else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_FULL) - val |= PORT_TEST(6); - else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_LOW) - val |= PORT_TEST(7); - writel(val, &hw->port_status[0]); - udelay(10); - - /* Disable test mode by setting PTC field to NORMAL_OP */ - val = readl(&hw->port_status[0]); - val &= ~PORT_TEST(~0); - writel(val, &hw->port_status[0]); - udelay(10); - } - - /* Poll until CCS is enabled */ - if (handshake(ehci, &hw->port_status[0], PORT_CONNECT, - PORT_CONNECT, 2000)) { - pr_err("%s: timeout waiting for PORT_CONNECT\n", __func__); - goto restart; - } - - /* Poll until PE is enabled */ - if (handshake(ehci, &hw->port_status[0], PORT_PE, - PORT_PE, 2000)) { - pr_err("%s: timeout waiting for USB_PORTSC1_PE\n", __func__); - goto restart; - } - - /* Clear the PCI status, to avoid an interrupt taken upon resume */ - val = readl(&hw->status); - val |= STS_PCD; - writel(val, &hw->status); - - /* Put controller in suspend mode by writing 1 to SUSP bit of PORTSC */ - val = readl(&hw->port_status[0]); - if ((val & PORT_POWER) && (val & PORT_PE)) { - val |= PORT_SUSPEND; - writel(val, &hw->port_status[0]); - - /* Wait until port suspend completes */ - if (handshake(ehci, &hw->port_status[0], PORT_SUSPEND, - PORT_SUSPEND, 1000)) { - pr_err("%s: timeout waiting for PORT_SUSPEND\n", - __func__); - goto restart; - } - } - - tegra_ehci_phy_restore_end(tegra->phy); - return 0; - -restart: - if (tegra->port_speed <= TEGRA_USB_PHY_PORT_SPEED_HIGH) - tegra_ehci_phy_restore_end(tegra->phy); - - tegra_ehci_restart(hcd); - return 0; -} - static void tegra_ehci_shutdown(struct usb_hcd *hcd) { struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); @@ -434,36 +319,6 @@ static int tegra_ehci_setup(struct usb_hcd *hcd) return retval; } -#ifdef CONFIG_PM -static int tegra_ehci_bus_suspend(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - int error_status = 0; - - error_status = ehci_bus_suspend(hcd); - if (!error_status && tegra->power_down_on_bus_suspend) { - tegra_usb_suspend(hcd); - tegra->bus_suspended = 1; - } - - return error_status; -} - -static int tegra_ehci_bus_resume(struct usb_hcd *hcd) -{ - struct tegra_ehci_hcd *tegra = dev_get_drvdata(hcd->self.controller); - - if (tegra->bus_suspended && tegra->power_down_on_bus_suspend) { - tegra_usb_resume(hcd); - tegra->bus_suspended = 0; - } - - tegra_usb_phy_preresume(tegra->phy); - tegra->port_resuming = 1; - return ehci_bus_resume(hcd); -} -#endif - struct temp_buffer { void *kmalloc_ptr; void *old_xfer_buffer; @@ -574,8 +429,8 @@ static const struct hc_driver tegra_ehci_hc_driver = { .hub_control = tegra_ehci_hub_control, .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, #ifdef CONFIG_PM - .bus_suspend = tegra_ehci_bus_suspend, - .bus_resume = tegra_ehci_bus_resume, + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, #endif .relinquish_port = ehci_relinquish_port, .port_handed_over = ehci_port_handed_over, @@ -608,6 +463,183 @@ static int setup_vbus_gpio(struct platform_device *pdev) return err; } +#ifdef CONFIG_PM + +static int controller_suspend(struct device *dev) +{ + struct tegra_ehci_hcd *tegra = + platform_get_drvdata(to_platform_device(dev)); + struct ehci_hcd *ehci = tegra->ehci; + struct usb_hcd *hcd = ehci_to_hcd(ehci); + struct ehci_regs __iomem *hw = ehci->regs; + unsigned long flags; + + if (time_before(jiffies, ehci->next_statechange)) + msleep(10); + + spin_lock_irqsave(&ehci->lock, flags); + + tegra->port_speed = (readl(&hw->port_status[0]) >> 26) & 0x3; + ehci_halt(ehci); + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + spin_unlock_irqrestore(&ehci->lock, flags); + + tegra_ehci_power_down(hcd); + return 0; +} + +static int controller_resume(struct device *dev) +{ + struct tegra_ehci_hcd *tegra = + platform_get_drvdata(to_platform_device(dev)); + struct ehci_hcd *ehci = tegra->ehci; + struct usb_hcd *hcd = ehci_to_hcd(ehci); + struct ehci_regs __iomem *hw = ehci->regs; + unsigned long val; + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + tegra_ehci_power_up(hcd); + + if (tegra->port_speed > TEGRA_USB_PHY_PORT_SPEED_HIGH) { + /* Wait for the phy to detect new devices + * before we restart the controller */ + msleep(10); + goto restart; + } + + /* Force the phy to keep data lines in suspend state */ + tegra_ehci_phy_restore_start(tegra->phy, tegra->port_speed); + + /* Enable host mode */ + tdi_reset(ehci); + + /* Enable Port Power */ + val = readl(&hw->port_status[0]); + val |= PORT_POWER; + writel(val, &hw->port_status[0]); + udelay(10); + + /* Check if the phy resume from LP0. When the phy resume from LP0 + * USB register will be reset. */ + if (!readl(&hw->async_next)) { + /* Program the field PTC based on the saved speed mode */ + val = readl(&hw->port_status[0]); + val &= ~PORT_TEST(~0); + if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_HIGH) + val |= PORT_TEST_FORCE; + else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_FULL) + val |= PORT_TEST(6); + else if (tegra->port_speed == TEGRA_USB_PHY_PORT_SPEED_LOW) + val |= PORT_TEST(7); + writel(val, &hw->port_status[0]); + udelay(10); + + /* Disable test mode by setting PTC field to NORMAL_OP */ + val = readl(&hw->port_status[0]); + val &= ~PORT_TEST(~0); + writel(val, &hw->port_status[0]); + udelay(10); + } + + /* Poll until CCS is enabled */ + if (handshake(ehci, &hw->port_status[0], PORT_CONNECT, + PORT_CONNECT, 2000)) { + pr_err("%s: timeout waiting for PORT_CONNECT\n", __func__); + goto restart; + } + + /* Poll until PE is enabled */ + if (handshake(ehci, &hw->port_status[0], PORT_PE, + PORT_PE, 2000)) { + pr_err("%s: timeout waiting for USB_PORTSC1_PE\n", __func__); + goto restart; + } + + /* Clear the PCI status, to avoid an interrupt taken upon resume */ + val = readl(&hw->status); + val |= STS_PCD; + writel(val, &hw->status); + + /* Put controller in suspend mode by writing 1 to SUSP bit of PORTSC */ + val = readl(&hw->port_status[0]); + if ((val & PORT_POWER) && (val & PORT_PE)) { + val |= PORT_SUSPEND; + writel(val, &hw->port_status[0]); + + /* Wait until port suspend completes */ + if (handshake(ehci, &hw->port_status[0], PORT_SUSPEND, + PORT_SUSPEND, 1000)) { + pr_err("%s: timeout waiting for PORT_SUSPEND\n", + __func__); + goto restart; + } + } + + tegra_ehci_phy_restore_end(tegra->phy); + goto done; + + restart: + if (tegra->port_speed <= TEGRA_USB_PHY_PORT_SPEED_HIGH) + tegra_ehci_phy_restore_end(tegra->phy); + + tegra_ehci_restart(hcd); + + done: + tegra_usb_phy_preresume(tegra->phy); + tegra->port_resuming = 1; + return 0; +} + +static int tegra_ehci_suspend(struct device *dev) +{ + struct tegra_ehci_hcd *tegra = + platform_get_drvdata(to_platform_device(dev)); + struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); + int rc = 0; + + /* + * When system sleep is supported and USB controller wakeup is + * implemented: If the controller is runtime-suspended and the + * wakeup setting needs to be changed, call pm_runtime_resume(). + */ + if (HCD_HW_ACCESSIBLE(hcd)) + rc = controller_suspend(dev); + return rc; +} + +static int tegra_ehci_resume(struct device *dev) +{ + int rc; + + rc = controller_resume(dev); + if (rc == 0) { + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + } + return rc; +} + +static int tegra_ehci_runtime_suspend(struct device *dev) +{ + return controller_suspend(dev); +} + +static int tegra_ehci_runtime_resume(struct device *dev) +{ + return controller_resume(dev); +} + +static const struct dev_pm_ops tegra_ehci_pm_ops = { + .suspend = tegra_ehci_suspend, + .resume = tegra_ehci_resume, + .runtime_suspend = tegra_ehci_runtime_suspend, + .runtime_resume = tegra_ehci_runtime_resume, +}; + +#endif + static u64 tegra_ehci_dma_mask = DMA_BIT_MASK(32); static int tegra_ehci_probe(struct platform_device *pdev) @@ -722,7 +754,6 @@ static int tegra_ehci_probe(struct platform_device *pdev) } tegra->host_resumed = 1; - tegra->power_down_on_bus_suspend = pdata->power_down_on_bus_suspend; tegra->ehci = hcd_to_ehci(hcd); irq = platform_get_irq(pdev, 0); @@ -746,6 +777,14 @@ static int tegra_ehci_probe(struct platform_device *pdev) goto fail; } + pm_runtime_set_active(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + + /* Don't skip the pm_runtime_forbid call if wakeup isn't working */ + /* if (!pdata->power_down_on_bus_suspend) */ + pm_runtime_forbid(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_put_sync(&pdev->dev); return err; fail: @@ -772,33 +811,6 @@ fail_hcd: return err; } -#ifdef CONFIG_PM -static int tegra_ehci_resume(struct platform_device *pdev) -{ - struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev); - struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); - - if (tegra->bus_suspended) - return 0; - - return tegra_usb_resume(hcd); -} - -static int tegra_ehci_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev); - struct usb_hcd *hcd = ehci_to_hcd(tegra->ehci); - - if (tegra->bus_suspended) - return 0; - - if (time_before(jiffies, tegra->ehci->next_statechange)) - msleep(10); - - return tegra_usb_suspend(hcd); -} -#endif - static int tegra_ehci_remove(struct platform_device *pdev) { struct tegra_ehci_hcd *tegra = platform_get_drvdata(pdev); @@ -807,6 +819,10 @@ static int tegra_ehci_remove(struct platform_device *pdev) if (tegra == NULL || hcd == NULL) return -EINVAL; + pm_runtime_get_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); + #ifdef CONFIG_USB_OTG_UTILS if (tegra->transceiver) { otg_set_host(tegra->transceiver->otg, NULL); @@ -847,13 +863,12 @@ static struct of_device_id tegra_ehci_of_match[] __devinitdata = { static struct platform_driver tegra_ehci_driver = { .probe = tegra_ehci_probe, .remove = tegra_ehci_remove, -#ifdef CONFIG_PM - .suspend = tegra_ehci_suspend, - .resume = tegra_ehci_resume, -#endif .shutdown = tegra_ehci_hcd_shutdown, .driver = { .name = "tegra-ehci", .of_match_table = tegra_ehci_of_match, +#ifdef CONFIG_PM + .pm = &tegra_ehci_pm_ops, +#endif } }; -- cgit v1.1 From 04c235c92ce8474e9f2b358bd97f013a500385f2 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 30 Apr 2012 17:24:10 -0600 Subject: USB: ehci-tegra: remove redundant gpio_set_value The immediately preceding gpio_direction_output() already set the value, so there's no need to repeat it. This also prevents gpio_set_value() from WARNing when the GPIO is sleepable (e.g. is on an I2C expander); the set direction API is always sleepable, but plain set_value isn't. Cc: # v3.3 Signed-off-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-tegra.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 73f3525..f214a80 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -458,7 +458,6 @@ static int setup_vbus_gpio(struct platform_device *pdev) dev_err(&pdev->dev, "can't enable vbus\n"); return err; } - gpio_set_value(gpio, 1); return err; } -- cgit v1.1 From 156d17905e783d057061b3b56a9b3befec064e47 Mon Sep 17 00:00:00 2001 From: Sachin Prabhu Date: Wed, 25 Apr 2012 12:10:14 +0100 Subject: CIFS: Fix indentation in cifs_show_options Trivial patch which fixes a misplaced tab in cifs_show_options(). Signed-off-by: Sachin Prabhu Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 811245b..ca6a379 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -442,7 +442,7 @@ cifs_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",rsize=%u", cifs_sb->rsize); seq_printf(s, ",wsize=%u", cifs_sb->wsize); /* convert actimeo and display it in seconds */ - seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); + seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ); return 0; } -- cgit v1.1 From 8f71465c19ffefbfd0da3c1f5dc172b4bce05e93 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 1 May 2012 17:41:49 -0400 Subject: cifs: don't cap ra_pages at the same level as default_backing_dev_info While testing, I've found that even when we are able to negotiate a much larger rsize with the server, on-the-wire reads often end up being capped at 128k because of ra_pages being capped at that level. Lifting this restriction gave almost a twofold increase in sequential read performance on my craptactular KVM test rig with a 1M rsize. I think this is safe since the actual ra_pages that the VM requests is run through max_sane_readahead() prior to submitting the I/O. Under memory pressure we should end up with large readahead requests being suppressed anyway. Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 18 +----------------- 1 file changed, 1 insertion(+), 17 deletions(-) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index f4d381e..6ce888b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -3614,22 +3614,6 @@ cifs_get_volume_info(char *mount_data, const char *devname) return volume_info; } -/* make sure ra_pages is a multiple of rsize */ -static inline unsigned int -cifs_ra_pages(struct cifs_sb_info *cifs_sb) -{ - unsigned int reads; - unsigned int rsize_pages = cifs_sb->rsize / PAGE_CACHE_SIZE; - - if (rsize_pages >= default_backing_dev_info.ra_pages) - return default_backing_dev_info.ra_pages; - else if (rsize_pages == 0) - return rsize_pages; - - reads = default_backing_dev_info.ra_pages / rsize_pages; - return reads * rsize_pages; -} - int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info) { @@ -3717,7 +3701,7 @@ try_mount_again: cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info); /* tune readahead according to rsize */ - cifs_sb->bdi.ra_pages = cifs_ra_pages(cifs_sb); + cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE; remote_path_check: #ifdef CONFIG_CIFS_DFS_UPCALL -- cgit v1.1 From 58fa015f611b51e1f501b048bc5ac263c78852f0 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 1 May 2012 17:41:16 -0400 Subject: cifs: add missing initialization of server->req_lock Cc: Pavel Shilovsky Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 6ce888b..a75902b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -2183,6 +2183,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info) tcp_ses->session_estab = false; tcp_ses->sequence_number = 0; tcp_ses->lstrp = jiffies; + spin_lock_init(&tcp_ses->req_lock); INIT_LIST_HEAD(&tcp_ses->tcp_ses_list); INIT_LIST_HEAD(&tcp_ses->smb_ses_list); INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request); -- cgit v1.1 From 074b5e1a99fb5017122591d70098601e0484ca6a Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 2 May 2012 12:07:06 +0100 Subject: drm/i915: Do not read non-existent DPLL registers on PCH hardware We only execute intel_decrease_pllclock for pre-PCH hardware, typically gen4 mobiles. However, in the variable declaration we did read from the non-PCH DPLL register, quite naughty and detected by SandyBridge. Reported-and-tested-by: Andrey Rahmatullin Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49025 Signed-off-by: Chris Wilson Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 5908cd5..1b1cf3b 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -7072,9 +7072,6 @@ static void intel_decrease_pllclock(struct drm_crtc *crtc) struct drm_device *dev = crtc->dev; drm_i915_private_t *dev_priv = dev->dev_private; struct intel_crtc *intel_crtc = to_intel_crtc(crtc); - int pipe = intel_crtc->pipe; - int dpll_reg = DPLL(pipe); - int dpll = I915_READ(dpll_reg); if (HAS_PCH_SPLIT(dev)) return; @@ -7087,10 +7084,15 @@ static void intel_decrease_pllclock(struct drm_crtc *crtc) * the manual case. */ if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) { + int pipe = intel_crtc->pipe; + int dpll_reg = DPLL(pipe); + u32 dpll; + DRM_DEBUG_DRIVER("downclocking LVDS\n"); assert_panel_unlocked(dev_priv, pipe); + dpll = I915_READ(dpll_reg); dpll |= DISPLAY_RATE_SELECT_FPA1; I915_WRITE(dpll_reg, dpll); intel_wait_for_vblank(dev, pipe); @@ -7098,7 +7100,6 @@ static void intel_decrease_pllclock(struct drm_crtc *crtc) if (!(dpll & DISPLAY_RATE_SELECT_FPA1)) DRM_DEBUG_DRIVER("failed to downclock LVDS!\n"); } - } /** -- cgit v1.1 From e90f3b61f4432e3c5bb6b57f4b3e8d8cba747541 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 30 Apr 2012 19:35:02 +0100 Subject: drm/i915: Only enable IPS polling for gen5 On SandyBridge IPS was entirely implemented in hardware and not reliant on the driver monitoring power consumption and feeding back desired run states, so the hardware is able to adapt quicker and more flexibly. Which is a huge relief for us as we no longer have to carry empirically derived magic algorithms. Yet despite the advance in technology, the driver was still doing its IPS polling on all machines. Restrict it to the only supported hardware, Clarkdale/Arrandale. Signed-off-by: Chris Wilson Reviewed-by: Jesse Barnes Tested-by: Andrey Rahmatullin Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=49025 Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_debugfs.c | 3 +++ drivers/gpu/drm/i915/i915_dma.c | 15 ++++++++++----- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index b505b70..e6162a1 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1224,6 +1224,9 @@ static int i915_emon_status(struct seq_file *m, void *unused) unsigned long temp, chipset, gfx; int ret; + if (!IS_GEN5(dev)) + return -ENODEV; + ret = mutex_lock_interruptible(&dev->struct_mutex); if (ret) return ret; diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c index 785f67f..ba60f3c 100644 --- a/drivers/gpu/drm/i915/i915_dma.c +++ b/drivers/gpu/drm/i915/i915_dma.c @@ -1701,6 +1701,9 @@ void i915_update_gfx_val(struct drm_i915_private *dev_priv) unsigned long diffms; u32 count; + if (dev_priv->info->gen != 5) + return; + getrawmonotonic(&now); diff1 = timespec_sub(now, dev_priv->last_time2); @@ -2121,12 +2124,14 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags) setup_timer(&dev_priv->hangcheck_timer, i915_hangcheck_elapsed, (unsigned long) dev); - spin_lock(&mchdev_lock); - i915_mch_dev = dev_priv; - dev_priv->mchdev_lock = &mchdev_lock; - spin_unlock(&mchdev_lock); + if (IS_GEN5(dev)) { + spin_lock(&mchdev_lock); + i915_mch_dev = dev_priv; + dev_priv->mchdev_lock = &mchdev_lock; + spin_unlock(&mchdev_lock); - ips_ping_for_i915_load(); + ips_ping_for_i915_load(); + } return 0; -- cgit v1.1 From cf04317227d0c53d931a0b963e7ac6f7f0125e8a Mon Sep 17 00:00:00 2001 From: Franky Lin Date: Mon, 30 Apr 2012 11:43:07 -0700 Subject: brcmfmac: fix a double spin_unlock_irqrestore issue in dpc dpc_tl_lock is not acquired in the error handle code for bus down. But it's unlocked using spin_unlock_irqrestore after finishing task list walk down. Grab the lock before breaking the loop to avoid a double unlock. Reported-by: Dan Carpenter Signed-off-by: Franky Lin Signed-off-by: John W. Linville --- drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c index eb3829b..e2b34e1 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c @@ -2637,6 +2637,7 @@ static int brcmf_sdbrcm_dpc_thread(void *data) /* after stopping the bus, exit thread */ brcmf_sdbrcm_bus_stop(bus->sdiodev->dev); bus->dpc_tsk = NULL; + spin_lock_irqsave(&bus->dpc_tl_lock, flags); break; } -- cgit v1.1 From 9d1ceac5c6f7e77ea914de376ec17ced3eb22e5f Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Tue, 1 May 2012 09:12:24 +0530 Subject: Revert "ath9k_hw: Fix incorrect spur_freq_sd for AR9003" This reverts commit a844adfd7bee4edc66d337de6c33b348e83552a8. The commit a844adfd is degrading rx sensitivity of lower rate in HT40 mode and it is confirmed that reverting the change is improving rx sensitivity. spur_freq_sd (for self-corr in AGC) is defined with respect to the center of each 20MHz channel while spur_phase_delta (for self-corr in Rx and spur data filter) is defined with respect to the center of current RF channel. So in short, we need to subtract spur_freq_sd (for self-corr in AGC) by the offset between the center of primary20 and the center of RF channel in SW. This offset could be +/10 MHz for dynamic 40. Cc: Madhan Jaganathan Signed-off-by: Kai Shi Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/ar9003_phy.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/ar9003_phy.c b/drivers/net/wireless/ath/ath9k/ar9003_phy.c index deb6cfb..600aca9 100644 --- a/drivers/net/wireless/ath/ath9k/ar9003_phy.c +++ b/drivers/net/wireless/ath/ath9k/ar9003_phy.c @@ -373,7 +373,7 @@ static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah, else spur_subchannel_sd = 0; - spur_freq_sd = (freq_offset << 9) / 11; + spur_freq_sd = ((freq_offset + 10) << 9) / 11; } else { if (REG_READ_FIELD(ah, AR_PHY_GEN_CTRL, @@ -382,7 +382,7 @@ static void ar9003_hw_spur_ofdm_work(struct ath_hw *ah, else spur_subchannel_sd = 1; - spur_freq_sd = (freq_offset << 9) / 11; + spur_freq_sd = ((freq_offset - 10) << 9) / 11; } -- cgit v1.1 From 62004978df3898649e152751eb6ac264a323ec36 Mon Sep 17 00:00:00 2001 From: Marc Gariepy Date: Tue, 1 May 2012 13:37:57 -0400 Subject: fixing dmi match for hp t5745 and hp st5747 thin client Match the correct information which is DMI_PRODUCT_NAME instead of DMI_BOARD_NAME See dmidecode information on launchpad for both thin client: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911920 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/911916 Signed-off-by: Marc Gariepy Reviewed-by: Adam Jackson Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_lvds.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 30e2c82..9c71183 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -750,7 +750,7 @@ static const struct dmi_system_id intel_no_lvds[] = { .ident = "Hewlett-Packard t5745", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_BOARD_NAME, "hp t5745"), + DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745"), }, }, { @@ -758,7 +758,7 @@ static const struct dmi_system_id intel_no_lvds[] = { .ident = "Hewlett-Packard st5747", .matches = { DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), - DMI_MATCH(DMI_BOARD_NAME, "hp st5747"), + DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747"), }, }, { -- cgit v1.1 From dd7f1fe1fbe14cb100de14e6aa26ce4d3be0fab9 Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Tue, 1 May 2012 21:28:59 -0400 Subject: alpha: VGA_HOSE depends on VGA_CONSOLE MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit arch/alpha/kernel/console.c:locate_and_init_vga uses vga_con, causing build failures if VGA_CONSOLE was not set and MARVEL, TITAN, DP264, or GENERIC alpha system types were set. Reported-by: Raúl Porcel Signed-off-by: Matt Turner --- arch/alpha/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index 56a4df9..22e58a9 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -477,7 +477,7 @@ config ALPHA_BROKEN_IRQ_MASK config VGA_HOSE bool - depends on ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI + depends on VGA_CONSOLE && (ALPHA_GENERIC || ALPHA_TITAN || ALPHA_MARVEL || ALPHA_TSUNAMI) default y help Support VGA on an arbitrary hose; needed for several platforms -- cgit v1.1 From f8eafb5f1a7af1281fef93fd47c9bfe0d68c8652 Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Tue, 1 May 2012 21:52:26 -0400 Subject: alpha: properly define get/set_rtc_time on Marvel/SMP MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The marvel_get_rtc_time and marvel_set_rtc_time are static, but they're available through Marvel's machine vector. Reported-by: Raúl Porcel Signed-off-by: Matt Turner --- arch/alpha/include/asm/rtc.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/alpha/include/asm/rtc.h b/arch/alpha/include/asm/rtc.h index 1f7fba6..d70408d 100644 --- a/arch/alpha/include/asm/rtc.h +++ b/arch/alpha/include/asm/rtc.h @@ -1,14 +1,10 @@ #ifndef _ALPHA_RTC_H #define _ALPHA_RTC_H -#if defined(CONFIG_ALPHA_GENERIC) +#if defined(CONFIG_ALPHA_MARVEL) && defined(CONFIG_SMP) \ + || defined(CONFIG_ALPHA_GENERIC) # define get_rtc_time alpha_mv.rtc_get_time # define set_rtc_time alpha_mv.rtc_set_time -#else -# if defined(CONFIG_ALPHA_MARVEL) && defined(CONFIG_SMP) -# define get_rtc_time marvel_get_rtc_time -# define set_rtc_time marvel_set_rtc_time -# endif #endif #include -- cgit v1.1 From 8fa196478b8fb30e59456252ab4b309985f67443 Mon Sep 17 00:00:00 2001 From: Jim Faulkner Date: Tue, 1 May 2012 21:58:08 -0400 Subject: alpha: include module.h to fix modpost on Tsunami Signed-off-by: Jim Faulkner Signed-off-by: Matt Turner --- arch/alpha/kernel/core_tsunami.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/alpha/kernel/core_tsunami.c b/arch/alpha/kernel/core_tsunami.c index 5e7c28f..61893d7 100644 --- a/arch/alpha/kernel/core_tsunami.c +++ b/arch/alpha/kernel/core_tsunami.c @@ -11,6 +11,7 @@ #include #undef __EXTERN_INLINE +#include #include #include #include -- cgit v1.1 From 2f2be2784a60d7ab3f13dbb3e18f0cadea5bb655 Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Tue, 1 May 2012 22:12:12 -0400 Subject: alpha: silence 'const' warning in sys_marvel.c warning: passing argument 1 of 'pci_find_capability' discards 'const' qualifier from pointer target type Signed-off-by: Matt Turner --- arch/alpha/kernel/sys_marvel.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/alpha/kernel/sys_marvel.c b/arch/alpha/kernel/sys_marvel.c index 14a4b6a..407accc 100644 --- a/arch/alpha/kernel/sys_marvel.c +++ b/arch/alpha/kernel/sys_marvel.c @@ -317,7 +317,7 @@ marvel_init_irq(void) } static int -marvel_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) +marvel_map_irq(struct pci_dev *dev, u8 slot, u8 pin) { struct pci_controller *hose = dev->sysdata; struct io7_port *io7_port = hose->sysdata; -- cgit v1.1 From 5bbdc057c270cc0d672ead03320ed8d7a11bac03 Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund Date: Sun, 29 Apr 2012 22:36:54 +0000 Subject: net: ucc_geth, increase no. of HW RX descriptors In a busy network we see ucc_geth is dropping RX pkgs every now and then. Increase the RX queues HW descriptors from 16 to 32 to deal with this. Signed-off-by: Joakim Tjernlund Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/ucc_geth.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/freescale/ucc_geth.h b/drivers/net/ethernet/freescale/ucc_geth.h index 2e395a2..f71b3e7 100644 --- a/drivers/net/ethernet/freescale/ucc_geth.h +++ b/drivers/net/ethernet/freescale/ucc_geth.h @@ -877,7 +877,7 @@ struct ucc_geth_hardware_statistics { /* Driver definitions */ #define TX_BD_RING_LEN 0x10 -#define RX_BD_RING_LEN 0x10 +#define RX_BD_RING_LEN 0x20 #define TX_RING_MOD_MASK(size) (size-1) #define RX_RING_MOD_MASK(size) (size-1) -- cgit v1.1 From 70f8002d7813ffc5dd9ff3e9d01a17794fb4a4df Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund Date: Sun, 29 Apr 2012 22:36:55 +0000 Subject: ucc_geth: Add 16 bytes to max TX frame for VLANs Creating a VLAN interface on top of ucc_geth adds 4 bytes to the frame and the HW controller is not prepared to TX a frame bigger than 1518 bytes which is 4 bytes too small for a full VLAN frame. Add 16 bytes which will handle the a simple VLAN and leaves 12 bytes for future expansion. Signed-off-by: Joakim Tjernlund Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/ucc_geth.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c index 17a46e7..9ac14f8 100644 --- a/drivers/net/ethernet/freescale/ucc_geth.c +++ b/drivers/net/ethernet/freescale/ucc_geth.c @@ -116,10 +116,10 @@ static struct ucc_geth_info ugeth_primary_info = { .maxGroupAddrInHash = 4, .maxIndAddrInHash = 4, .prel = 7, - .maxFrameLength = 1518, + .maxFrameLength = 1518+16, /* Add extra bytes for VLANs etc. */ .minFrameLength = 64, - .maxD1Length = 1520, - .maxD2Length = 1520, + .maxD1Length = 1520+16, /* Add extra bytes for VLANs etc. */ + .maxD2Length = 1520+16, /* Add extra bytes for VLANs etc. */ .vlantype = 0x8100, .ecamptr = ((uint32_t) NULL), .eventRegMask = UCCE_OTHER, -- cgit v1.1 From 720f3d7cb19eb27f85f72836c8f8004ccb257f39 Mon Sep 17 00:00:00 2001 From: "tom.leiming@gmail.com" Date: Sun, 29 Apr 2012 22:51:02 +0000 Subject: usbnet: fix leak of transfer buffer of dev->interrupt The transfer buffer of dev->interrupt is allocated in .probe path, but not freed in .disconnet path, so mark the interrupt URB as URB_FREE_BUFFER to free the buffer when the URB is destroyed. Signed-off-by: Ming Lei Acked-by: Oliver Neukum Signed-off-by: David S. Miller --- drivers/net/usb/usbnet.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index b7b3f5b..ca6fd80 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -210,6 +210,7 @@ static int init_status (struct usbnet *dev, struct usb_interface *intf) } else { usb_fill_int_urb(dev->interrupt, dev->udev, pipe, buf, maxp, intr_complete, dev, period); + dev->interrupt->transfer_flags |= URB_FREE_BUFFER; dev_dbg(&intf->dev, "status ep%din, %d bytes period %d\n", usb_pipeendpoint(pipe), maxp, period); -- cgit v1.1 From a4723848d05dd31d298c551fb77ad28481309999 Mon Sep 17 00:00:00 2001 From: "tom.leiming@gmail.com" Date: Sun, 29 Apr 2012 22:51:03 +0000 Subject: usbnet: fix failure handling in usbnet_probe If register_netdev returns failure, the dev->interrupt and its transfer buffer should be released, so just fix it. Signed-off-by: Ming Lei Signed-off-by: David S. Miller --- drivers/net/usb/usbnet.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c index ca6fd80..2d927fb 100644 --- a/drivers/net/usb/usbnet.c +++ b/drivers/net/usb/usbnet.c @@ -1444,7 +1444,7 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) status = register_netdev (net); if (status) - goto out3; + goto out4; netif_info(dev, probe, dev->net, "register '%s' at usb-%s-%s, %s, %pM\n", udev->dev.driver->name, @@ -1462,6 +1462,8 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod) return 0; +out4: + usb_free_urb(dev->interrupt); out3: if (info->unbind) info->unbind (dev, udev); -- cgit v1.1 From 4fdcfa12843bca38d0c9deff70c8720e4e8f515f Mon Sep 17 00:00:00 2001 From: Neil Horman Date: Tue, 1 May 2012 08:18:02 +0000 Subject: drop_monitor: prevent init path from scheduling on the wrong cpu I just noticed after some recent updates, that the init path for the drop monitor protocol has a minor error. drop monitor maintains a per cpu structure, that gets initalized from a single cpu. Normally this is fine, as the protocol isn't in use yet, but I recently made a change that causes a failed skb allocation to reschedule itself . Given the current code, the implication is that this workqueue reschedule will take place on the wrong cpu. If drop monitor is used early during the boot process, its possible that two cpus will access a single per-cpu structure in parallel, possibly leading to data corruption. This patch fixes the situation, by storing the cpu number that a given instance of this per-cpu data should be accessed from. In the case of a need for a reschedule, the cpu stored in the struct is assigned the rescheule, rather than the currently executing cpu Tested successfully by myself. Signed-off-by: Neil Horman CC: David Miller Signed-off-by: David S. Miller --- net/core/drop_monitor.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/net/core/drop_monitor.c b/net/core/drop_monitor.c index 7592943..a7cad74 100644 --- a/net/core/drop_monitor.c +++ b/net/core/drop_monitor.c @@ -49,6 +49,7 @@ struct per_cpu_dm_data { struct sk_buff __rcu *skb; atomic_t dm_hit_count; struct timer_list send_timer; + int cpu; }; struct dm_hw_stat_delta { @@ -73,7 +74,6 @@ static int dm_hit_limit = 64; static int dm_delay = 1; static unsigned long dm_hw_check_delta = 2*HZ; static LIST_HEAD(hw_stats_list); -static int initialized = 0; static void reset_per_cpu_data(struct per_cpu_dm_data *data) { @@ -96,8 +96,8 @@ static void reset_per_cpu_data(struct per_cpu_dm_data *data) sizeof(struct net_dm_alert_msg)); msg = nla_data(nla); memset(msg, 0, al); - } else if (initialized) - schedule_work_on(smp_processor_id(), &data->dm_alert_work); + } else + schedule_work_on(data->cpu, &data->dm_alert_work); /* * Don't need to lock this, since we are guaranteed to only @@ -121,6 +121,8 @@ static void send_dm_alert(struct work_struct *unused) struct sk_buff *skb; struct per_cpu_dm_data *data = &get_cpu_var(dm_cpu_data); + WARN_ON_ONCE(data->cpu != smp_processor_id()); + /* * Grab the skb we're about to send */ @@ -404,14 +406,14 @@ static int __init init_net_drop_monitor(void) for_each_present_cpu(cpu) { data = &per_cpu(dm_cpu_data, cpu); - reset_per_cpu_data(data); + data->cpu = cpu; INIT_WORK(&data->dm_alert_work, send_dm_alert); init_timer(&data->send_timer); data->send_timer.data = cpu; data->send_timer.function = sched_send_work; + reset_per_cpu_data(data); } - initialized = 1; goto out; -- cgit v1.1 From 84768edbb2721637620b2d84501bb0d5aed603f1 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Wed, 2 May 2012 03:58:43 +0000 Subject: net: l2tp: unlock socket lock before returning from l2tp_ip_sendmsg l2tp_ip_sendmsg could return without releasing socket lock, making it all the way to userspace, and generating the following warning: [ 130.891594] ================================================ [ 130.894569] [ BUG: lock held when returning to user space! ] [ 130.897257] 3.4.0-rc5-next-20120501-sasha #104 Tainted: G W [ 130.900336] ------------------------------------------------ [ 130.902996] trinity/8384 is leaving the kernel with locks still held! [ 130.906106] 1 lock held by trinity/8384: [ 130.907924] #0: (sk_lock-AF_INET){+.+.+.}, at: [] l2tp_ip_sendmsg+0x2f/0x550 Introduced by commit 2f16270 ("l2tp: Fix locking in l2tp_ip.c"). Signed-off-by: Sasha Levin Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- net/l2tp/l2tp_ip.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 585d93e..6274f0b 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -442,8 +442,9 @@ static int l2tp_ip_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m daddr = lip->l2tp_addr.s_addr; } else { + rc = -EDESTADDRREQ; if (sk->sk_state != TCP_ESTABLISHED) - return -EDESTADDRREQ; + goto out; daddr = inet->inet_daddr; connected = 1; -- cgit v1.1 From b49960a05e32121d29316cfdf653894b88ac9190 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 2 May 2012 02:28:41 +0000 Subject: tcp: change tcp_adv_win_scale and tcp_rmem[2] tcp_adv_win_scale default value is 2, meaning we expect a good citizen skb to have skb->len / skb->truesize ratio of 75% (3/4) In 2.6 kernels we (mis)accounted for typical MSS=1460 frame : 1536 + 64 + 256 = 1856 'estimated truesize', and 1856 * 3/4 = 1392. So these skbs were considered as not bloated. With recent truesize fixes, a typical MSS=1460 frame truesize is now the more precise : 2048 + 256 = 2304. But 2304 * 3/4 = 1728. So these skb are not good citizen anymore, because 1460 < 1728 (GRO can escape this problem because it build skbs with a too low truesize.) This also means tcp advertises a too optimistic window for a given allocated rcvspace : When receiving frames, sk_rmem_alloc can hit sk_rcvbuf limit and we call tcp_prune_queue()/tcp_collapse() too often, especially when application is slow to drain its receive queue or in case of losses (netperf is fast, scp is slow). This is a major latency source. We should adjust the len/truesize ratio to 50% instead of 75% This patch : 1) changes tcp_adv_win_scale default to 1 instead of 2 2) increase tcp_rmem[2] limit from 4MB to 6MB to take into account better truesize tracking and to allow autotuning tcp receive window to reach same value than before. Note that same amount of kernel memory is consumed compared to 2.6 kernels. Signed-off-by: Eric Dumazet Cc: Neal Cardwell Cc: Tom Herbert Cc: Yuchung Cheng Acked-by: Neal Cardwell Signed-off-by: David S. Miller --- Documentation/networking/ip-sysctl.txt | 4 ++-- net/ipv4/tcp.c | 9 +++++---- net/ipv4/tcp_input.c | 2 +- 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt index bd80ba5..1619a8c 100644 --- a/Documentation/networking/ip-sysctl.txt +++ b/Documentation/networking/ip-sysctl.txt @@ -147,7 +147,7 @@ tcp_adv_win_scale - INTEGER (if tcp_adv_win_scale > 0) or bytes-bytes/2^(-tcp_adv_win_scale), if it is <= 0. Possible values are [-31, 31], inclusive. - Default: 2 + Default: 1 tcp_allowed_congestion_control - STRING Show/set the congestion control choices available to non-privileged @@ -410,7 +410,7 @@ tcp_rmem - vector of 3 INTEGERs: min, default, max net.core.rmem_max. Calling setsockopt() with SO_RCVBUF disables automatic tuning of that socket's receive buffer size, in which case this value is ignored. - Default: between 87380B and 4MB, depending on RAM size. + Default: between 87380B and 6MB, depending on RAM size. tcp_sack - BOOLEAN Enable select acknowledgments (SACKS). diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 8bb6ade..1272a88 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -3243,7 +3243,7 @@ void __init tcp_init(void) { struct sk_buff *skb = NULL; unsigned long limit; - int max_share, cnt; + int max_rshare, max_wshare, cnt; unsigned int i; unsigned long jiffy = jiffies; @@ -3303,15 +3303,16 @@ void __init tcp_init(void) tcp_init_mem(&init_net); /* Set per-socket limits to no more than 1/128 the pressure threshold */ limit = nr_free_buffer_pages() << (PAGE_SHIFT - 7); - max_share = min(4UL*1024*1024, limit); + max_wshare = min(4UL*1024*1024, limit); + max_rshare = min(6UL*1024*1024, limit); sysctl_tcp_wmem[0] = SK_MEM_QUANTUM; sysctl_tcp_wmem[1] = 16*1024; - sysctl_tcp_wmem[2] = max(64*1024, max_share); + sysctl_tcp_wmem[2] = max(64*1024, max_wshare); sysctl_tcp_rmem[0] = SK_MEM_QUANTUM; sysctl_tcp_rmem[1] = 87380; - sysctl_tcp_rmem[2] = max(87380, max_share); + sysctl_tcp_rmem[2] = max(87380, max_rshare); pr_info("Hash tables configured (established %u bind %u)\n", tcp_hashinfo.ehash_mask + 1, tcp_hashinfo.bhash_size); diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index d99efd7..257b617 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -85,7 +85,7 @@ int sysctl_tcp_ecn __read_mostly = 2; EXPORT_SYMBOL(sysctl_tcp_ecn); int sysctl_tcp_dsack __read_mostly = 1; int sysctl_tcp_app_win __read_mostly = 31; -int sysctl_tcp_adv_win_scale __read_mostly = 2; +int sysctl_tcp_adv_win_scale __read_mostly = 1; EXPORT_SYMBOL(sysctl_tcp_adv_win_scale); int sysctl_tcp_stdurg __read_mostly; -- cgit v1.1 From 5a8887d39e1ba5ee2d4ccb94b14d6f2dce5ddfca Mon Sep 17 00:00:00 2001 From: Gerard Lledo Date: Sat, 28 Apr 2012 08:52:37 +0000 Subject: sungem: Fix WakeOnLan WakeOnLan was broken in this driver because gp->asleep_wol is a 1-bit bitfield and it was being assigned WAKE_MAGIC, which is (1 << 5). gp->asleep_wol remains 0 and the machine never wakes up. Fixed by casting gp->wake_on_lan to bool. Tested on an iBook G4. Signed-off-by: Gerard Lledo Signed-off-by: David S. Miller --- drivers/net/ethernet/sun/sungem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sun/sungem.c b/drivers/net/ethernet/sun/sungem.c index 558409f..4ba9690 100644 --- a/drivers/net/ethernet/sun/sungem.c +++ b/drivers/net/ethernet/sun/sungem.c @@ -2339,7 +2339,7 @@ static int gem_suspend(struct pci_dev *pdev, pm_message_t state) netif_device_detach(dev); /* Switch off chip, remember WOL setting */ - gp->asleep_wol = gp->wake_on_lan; + gp->asleep_wol = !!gp->wake_on_lan; gem_do_stop(dev, gp->asleep_wol); /* Unlock the network stack */ -- cgit v1.1 From addde4ec31456c5f1e9b61aae3edcfeb0f338f87 Mon Sep 17 00:00:00 2001 From: Dave Airlie Date: Wed, 2 May 2012 20:26:24 +0100 Subject: nouveau: initialise has_optimus variable. We should initialise this to 0 really to avoid getting false positives. Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/nouveau/nouveau_acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_acpi.c b/drivers/gpu/drm/nouveau/nouveau_acpi.c index 7814a76..284bd25 100644 --- a/drivers/gpu/drm/nouveau/nouveau_acpi.c +++ b/drivers/gpu/drm/nouveau/nouveau_acpi.c @@ -270,7 +270,7 @@ static bool nouveau_dsm_detect(void) struct acpi_buffer buffer = {sizeof(acpi_method_name), acpi_method_name}; struct pci_dev *pdev = NULL; int has_dsm = 0; - int has_optimus; + int has_optimus = 0; int vga_count = 0; bool guid_valid; int retval; -- cgit v1.1 From ab6039a70bb559b2fb5f363934da67d864ccda2a Mon Sep 17 00:00:00 2001 From: Don Skidmore Date: Sat, 17 Mar 2012 05:51:52 +0000 Subject: ixgbe: fix race condition with shutdown It was possible for shutdown to pull the rug out from other driver entry points. Now we just grab the rtnl lock before taking everything apart. Thanks to Hariharan for noticing this tight race condition. Signed-off-by: Don Skidmore Cc: Hariharan Nagarajan Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 88f6b2e..d9dbf87 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4866,10 +4866,12 @@ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) netif_device_detach(netdev); if (netif_running(netdev)) { + rtnl_lock(); ixgbe_down(adapter); ixgbe_free_irq(adapter); ixgbe_free_all_tx_resources(adapter); ixgbe_free_all_rx_resources(adapter); + rtnl_unlock(); } ixgbe_clear_interrupt_scheme(adapter); -- cgit v1.1 From f525c6d29501eb483f2d6f742d2f1dc0452b924d Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Wed, 18 Apr 2012 22:42:27 +0000 Subject: ixgbe: dcb: BIT_APP_UPCHG not set by ixgbe_copy_dcb_cfg() After this commit: commit aacc1bea190d731755a65cb8ec31dd756f4e263e Author: Multanen, Eric W Date: Wed Mar 28 07:49:09 2012 +0000 ixgbe: driver fix for link flap The BIT_APP_UPCHG bit is no longer set when ixgbe_dcbnl_set_all() is called. This results in the FCoE app user priority never getting set and the driver will not configure the tx_rings correctly for FCoE packets which use the SAN MTU and FCoE offloads. We resolve this regression by fixing ixgbe_copy_dcb_cfg() to also check for FCoE application changes. Additionally, we can drop the IEEE variants of get_dcb_app() because this path is never called with the IEEE mode enabled. Signed-off-by: John Fastabend Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe.h | 3 -- drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c | 43 ++++++++++++------------- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 +-- 3 files changed, 22 insertions(+), 28 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h index 74e1921..81b1555 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h @@ -574,9 +574,6 @@ extern struct ixgbe_info ixgbe_82599_info; extern struct ixgbe_info ixgbe_X540_info; #ifdef CONFIG_IXGBE_DCB extern const struct dcbnl_rtnl_ops dcbnl_ops; -extern int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *src_dcb_cfg, - struct ixgbe_dcb_config *dst_dcb_cfg, - int tc_max); #endif extern char ixgbe_driver_name[]; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c index 652e4b0..32e5c02 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c @@ -44,18 +44,26 @@ #define DCB_NO_HW_CHG 1 /* DCB configuration did not change */ #define DCB_HW_CHG 2 /* DCB configuration changed, no reset */ -int ixgbe_copy_dcb_cfg(struct ixgbe_dcb_config *scfg, - struct ixgbe_dcb_config *dcfg, int tc_max) +static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max) { + struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg; + struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg; struct tc_configuration *src = NULL; struct tc_configuration *dst = NULL; int i, j; int tx = DCB_TX_CONFIG; int rx = DCB_RX_CONFIG; int changes = 0; +#ifdef IXGBE_FCOE + struct dcb_app app = { + .selector = DCB_APP_IDTYPE_ETHTYPE, + .protocol = ETH_P_FCOE, + }; + u8 up = dcb_getapp(adapter->netdev, &app); - if (!scfg || !dcfg) - return changes; + if (up && !(up & (1 << adapter->fcoe.up))) + changes |= BIT_APP_UPCHG; +#endif for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) { src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0]; @@ -332,28 +340,12 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) struct ixgbe_adapter *adapter = netdev_priv(netdev); int ret = DCB_NO_HW_CHG; int i; -#ifdef IXGBE_FCOE - struct dcb_app app = { - .selector = DCB_APP_IDTYPE_ETHTYPE, - .protocol = ETH_P_FCOE, - }; - u8 up; - - /* In IEEE mode, use the IEEE Ethertype selector value */ - if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) { - app.selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE; - up = dcb_ieee_getapp_mask(netdev, &app); - } else { - up = dcb_getapp(netdev, &app); - } -#endif /* Fail command if not in CEE mode */ if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) return ret; - adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(&adapter->temp_dcb_cfg, - &adapter->dcb_cfg, + adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter, MAX_TRAFFIC_CLASS); if (!adapter->dcb_set_bitmap) return ret; @@ -440,8 +432,13 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) * FCoE is using changes. This happens if the APP info * changes or the up2tc mapping is updated. */ - if ((up && !(up & (1 << adapter->fcoe.up))) || - (adapter->dcb_set_bitmap & BIT_APP_UPCHG)) { + if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) { + struct dcb_app app = { + .selector = DCB_APP_IDTYPE_ETHTYPE, + .protocol = ETH_P_FCOE, + }; + u8 up = dcb_getapp(netdev, &app); + adapter->fcoe.up = ffs(up) - 1; ixgbe_dcbnl_devreset(netdev); ret = DCB_HW_CHG_RST; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index d9dbf87..50f0700 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4418,8 +4418,8 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) adapter->dcb_cfg.pfc_mode_enable = false; adapter->dcb_set_bitmap = 0x00; adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; - ixgbe_copy_dcb_cfg(&adapter->dcb_cfg, &adapter->temp_dcb_cfg, - MAX_TRAFFIC_CLASS); + memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, + sizeof(adapter->temp_dcb_cfg)); #endif -- cgit v1.1 From c1230df7e19e0f27655c0eb9d966c7e03be7cc50 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Wed, 2 May 2012 22:55:43 -0300 Subject: drm/i915: enable dip before writing data on gen4 While testing with the intel_infoframes tool on gen4, I see that when video DIP is disabled, what we write to the DATA memory is not exactly what we read back later. This regression has been introduce in commit 64a8fc0145a1d0fdc25fc9367c2e6c621955fb3b Author: Jesse Barnes Date: Thu Sep 22 11:16:00 2011 +0530 drm/i915: fix ILK+ infoframe support That commit was setting VIDEO_DIP_CTL to 0 when initializing, which caused the problem. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43947 Cc: stable@kernel.org Tested-by: Yang Guang Signed-off-by: Paulo Zanoni Reviewed-by: Eugeni Dodonov [danvet: Pimped commit message by using the usual commit citation layout.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_hdmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index cae3e5f..2d7f47b 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -136,7 +136,7 @@ static void i9xx_write_infoframe(struct drm_encoder *encoder, val &= ~VIDEO_DIP_SELECT_MASK; - I915_WRITE(VIDEO_DIP_CTL, val | port | flags); + I915_WRITE(VIDEO_DIP_CTL, VIDEO_DIP_ENABLE | val | port | flags); for (i = 0; i < len; i += 4) { I915_WRITE(VIDEO_DIP_DATA, *data); -- cgit v1.1 From ed90542b0ce5415050c6fbfca324bccaafa69f2f Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 24 Mar 2012 00:29:46 -0400 Subject: iwlwifi: fix skb truesize underestimation By default, iwlwifi uses order-1 pages (8 KB) to store incoming frames, but doesnt say so in skb->truesize. This makes very possible to exhaust kernel memory since these skb evade normal socket memory accounting. As struct ieee80211_hdr is going to be pulled before calling IP stack, there is no need to use dev_alloc_skb() to reserve NET_SKB_PAD bytes. alloc_skb() is ok in this driver, allowing more tailroom. Pull beginning of frame in skb header, in the hope we can reuse order-1 pages in the driver immediately for small frames and reduce their truesize to the minimum (linear skbs) Signed-off-by: Eric Dumazet Cc: Wey-Yi Guy Cc: "John W. Linville" Cc: Neal Cardwell Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-agn-rx.c | 21 ++++++++++++++------- drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c | 3 ++- drivers/net/wireless/iwlwifi/iwl-trans.h | 1 + 3 files changed, 17 insertions(+), 8 deletions(-) diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c index f4b84d1..2247460 100644 --- a/drivers/net/wireless/iwlwifi/iwl-agn-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-agn-rx.c @@ -773,8 +773,7 @@ static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv, struct sk_buff *skb; __le16 fc = hdr->frame_control; struct iwl_rxon_context *ctx; - struct page *p; - int offset; + unsigned int hdrlen, fraglen; /* We only process data packets if the interface is open */ if (unlikely(!priv->is_open)) { @@ -788,16 +787,24 @@ static void iwlagn_pass_packet_to_mac80211(struct iwl_priv *priv, iwlagn_set_decrypted_flag(priv, hdr, ampdu_status, stats)) return; - skb = dev_alloc_skb(128); + /* Dont use dev_alloc_skb(), we'll have enough headroom once + * ieee80211_hdr pulled. + */ + skb = alloc_skb(128, GFP_ATOMIC); if (!skb) { - IWL_ERR(priv, "dev_alloc_skb failed\n"); + IWL_ERR(priv, "alloc_skb failed\n"); return; } + hdrlen = min_t(unsigned int, len, skb_tailroom(skb)); + memcpy(skb_put(skb, hdrlen), hdr, hdrlen); + fraglen = len - hdrlen; - offset = (void *)hdr - rxb_addr(rxb); - p = rxb_steal_page(rxb); - skb_add_rx_frag(skb, 0, p, offset, len, len); + if (fraglen) { + int offset = (void *)hdr + hdrlen - rxb_addr(rxb); + skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, + fraglen, rxb->truesize); + } iwl_update_stats(priv, false, fc, len); /* diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c index 8b1a798..aa7aea1 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c +++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-rx.c @@ -374,8 +374,9 @@ static void iwl_rx_handle_rxbuf(struct iwl_trans *trans, if (WARN_ON(!rxb)) return; + rxcb.truesize = PAGE_SIZE << hw_params(trans).rx_page_order; dma_unmap_page(trans->dev, rxb->page_dma, - PAGE_SIZE << hw_params(trans).rx_page_order, + rxcb.truesize, DMA_FROM_DEVICE); rxcb._page = rxb->page; diff --git a/drivers/net/wireless/iwlwifi/iwl-trans.h b/drivers/net/wireless/iwlwifi/iwl-trans.h index 0c81cba..fdf9788 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans.h @@ -260,6 +260,7 @@ static inline void iwl_free_resp(struct iwl_host_cmd *cmd) struct iwl_rx_cmd_buffer { struct page *_page; + unsigned int truesize; }; static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r) -- cgit v1.1 From 7bdf7415a6b8ec31f86b3ad3eaa241257ecb7c4c Mon Sep 17 00:00:00 2001 From: Steve Dickson Date: Thu, 3 May 2012 11:47:08 -0400 Subject: auth_gss: the list of pseudoflavors not being parsed correctly gss_mech_list_pseudoflavors() parses a list of registered mechanisms. On that list contains a list of pseudo flavors which was not being parsed correctly, causing only the first pseudo flavor to be found. Signed-off-by: Steve Dickson Signed-off-by: Trond Myklebust --- net/sunrpc/auth_gss/gss_mech_switch.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/net/sunrpc/auth_gss/gss_mech_switch.c b/net/sunrpc/auth_gss/gss_mech_switch.c index ca8cad8..782bfe1 100644 --- a/net/sunrpc/auth_gss/gss_mech_switch.c +++ b/net/sunrpc/auth_gss/gss_mech_switch.c @@ -242,12 +242,13 @@ EXPORT_SYMBOL_GPL(gss_mech_get_by_pseudoflavor); int gss_mech_list_pseudoflavors(rpc_authflavor_t *array_ptr) { struct gss_api_mech *pos = NULL; - int i = 0; + int j, i = 0; spin_lock(®istered_mechs_lock); list_for_each_entry(pos, ®istered_mechs, gm_list) { - array_ptr[i] = pos->gm_pfs->pseudoflavor; - i++; + for (j=0; j < pos->gm_pf_num; j++) { + array_ptr[i++] = pos->gm_pfs[j].pseudoflavor; + } } spin_unlock(®istered_mechs_lock); return i; -- cgit v1.1 From 6868225e3e92399068be9a5f1635752d91012ad5 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 3 May 2012 22:15:07 +0800 Subject: libata: skip old error history when counting probe trials Commit d902747("[libata] Add ATA transport class") introduced ATA_EFLAG_OLD_ER to mark entries in the error ring as cleared. But ata_count_probe_trials_cb() didn't check this flag and it still counts the old error history. So wrong probe trials count is returned and it causes problem, for example, SATA link speed is slowed down from 3.0Gbps to 1.5Gbps. Fix it by checking ATA_EFLAG_OLD_ER in ata_count_probe_trials_cb(). Cc: stable # 2.6.37+ Signed-off-by: Lin Ming Signed-off-by: Jeff Garzik --- drivers/ata/libata-eh.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index c61316e..d1fbd59 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -3501,7 +3501,8 @@ static int ata_count_probe_trials_cb(struct ata_ering_entry *ent, void *void_arg u64 now = get_jiffies_64(); int *trials = void_arg; - if (ent->timestamp < now - min(now, interval)) + if ((ent->eflags & ATA_EFLAG_OLD_ER) || + (ent->timestamp < now - min(now, interval))) return -1; (*trials)++; -- cgit v1.1 From 642d89252201c4155fc3946bf9cdea409e5d263e Mon Sep 17 00:00:00 2001 From: Matt Johnson Date: Fri, 27 Apr 2012 01:42:30 -0500 Subject: ahci: Detect Marvell 88SE9172 SATA controller The Marvell 88SE9172 SATA controller (PCI ID 1b4b 917a) already worked once it was detected, but was missing an ahci_pci_tbl entry. Boot tested on a Gigabyte Z68X-UD3H-B3 motherboard. Signed-off-by: Matt Johnson Signed-off-by: Jeff Garzik --- drivers/ata/ahci.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 79a1e9d..ebaf67e 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -394,6 +394,8 @@ static const struct pci_device_id ahci_pci_tbl[] = { .driver_data = board_ahci_yes_fbs }, /* 88se9128 */ { PCI_DEVICE(0x1b4b, 0x9125), .driver_data = board_ahci_yes_fbs }, /* 88se9125 */ + { PCI_DEVICE(0x1b4b, 0x917a), + .driver_data = board_ahci_yes_fbs }, /* 88se9172 */ { PCI_DEVICE(0x1b4b, 0x91a3), .driver_data = board_ahci_yes_fbs }, -- cgit v1.1 From a78f57af610ea20559e6c63d90876bc262fdbf37 Mon Sep 17 00:00:00 2001 From: Tero Roponen Date: Sun, 22 Apr 2012 11:38:00 +0300 Subject: libata: init ata_print_id to 0 When comparing the dmesg between 3.4-rc3 and 3.4-rc4 I found the following differences: -ata1: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff100 irq 47 -ata2: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff180 irq 47 -ata3: DUMMY +ata2: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff100 irq 47 +ata3: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff180 irq 47 ata4: DUMMY ata5: DUMMY -ata6: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff380 irq 47 +ata6: DUMMY +ata7: SATA max UDMA/133 abar m2048@0xf9fff000 port 0xf9fff380 irq 47 The change of numbering comes from commit 85d6725b7c0d7e3f ("libata: make ata_print_id atomic") that changed lines like ap->print_id = ata_print_id++; to ap->print_id = atomic_inc_return(&ata_print_id); As the latter behaves like ++ata_print_id, we must initialize it to zero to start the numbering from one. Signed-off-by: Tero Roponen Acked-by: Dan Williams 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 28db50b..23763a1 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -95,7 +95,7 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev); static void ata_dev_xfermask(struct ata_device *dev); static unsigned long ata_dev_blacklisted(const struct ata_device *dev); -atomic_t ata_print_id = ATOMIC_INIT(1); +atomic_t ata_print_id = ATOMIC_INIT(0); struct ata_force_param { const char *name; -- cgit v1.1 From fb9751d471977be402efa1ee5885a17af78cbc55 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Sat, 21 Apr 2012 17:40:09 +0530 Subject: ata/pata_arasan_cf: Move arasan_cf_pm_ops out of #ifdef, #endif macros #ifdef, #endif is not required in definition/usage of arasan_cf_pm_ops. So, move this definition and its usage outside of them. Signed-off-by: Viresh Kumar Signed-off-by: Jeff Garzik --- drivers/ata/pata_arasan_cf.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c index fc2db2a..3239517 100644 --- a/drivers/ata/pata_arasan_cf.c +++ b/drivers/ata/pata_arasan_cf.c @@ -943,9 +943,9 @@ static int arasan_cf_resume(struct device *dev) return 0; } +#endif static SIMPLE_DEV_PM_OPS(arasan_cf_pm_ops, arasan_cf_suspend, arasan_cf_resume); -#endif static struct platform_driver arasan_cf_driver = { .probe = arasan_cf_probe, @@ -953,9 +953,7 @@ static struct platform_driver arasan_cf_driver = { .driver = { .name = DRIVER_NAME, .owner = THIS_MODULE, -#ifdef CONFIG_PM .pm = &arasan_cf_pm_ops, -#endif }, }; -- cgit v1.1 From 5f098a3ea72e73ad3733c3280fd5ee04816dc999 Mon Sep 17 00:00:00 2001 From: Viresh Kumar Date: Sat, 21 Apr 2012 17:40:12 +0530 Subject: ata: ahci_platform: Add synopsys ahci controller in DT's compatible list SPEAr13xx series of SoCs contain Synopsys AHCI SATA Controller which shares ahci_platform driver with other controller versions. This patch updates DT compatible list for ahci_platform. It also updates and renames binding documentation to more generic name. Signed-off-by: Viresh Kumar Cc: Rob Herring Signed-off-by: Jeff Garzik --- Documentation/devicetree/bindings/ata/ahci-platform.txt | 16 ++++++++++++++++ Documentation/devicetree/bindings/ata/calxeda-sata.txt | 17 ----------------- drivers/ata/ahci_platform.c | 1 + 3 files changed, 17 insertions(+), 17 deletions(-) create mode 100644 Documentation/devicetree/bindings/ata/ahci-platform.txt delete mode 100644 Documentation/devicetree/bindings/ata/calxeda-sata.txt diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt new file mode 100644 index 0000000..8bb8a76 --- /dev/null +++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt @@ -0,0 +1,16 @@ +* AHCI SATA Controller + +SATA nodes are defined to describe on-chip Serial ATA controllers. +Each SATA controller should have its own node. + +Required properties: +- compatible : compatible list, contains "calxeda,hb-ahci" or "snps,spear-ahci" +- interrupts : +- reg : + +Example: + sata@ffe08000 { + compatible = "calxeda,hb-ahci"; + reg = <0xffe08000 0x1000>; + interrupts = <115>; + }; diff --git a/Documentation/devicetree/bindings/ata/calxeda-sata.txt b/Documentation/devicetree/bindings/ata/calxeda-sata.txt deleted file mode 100644 index 79caa56..0000000 --- a/Documentation/devicetree/bindings/ata/calxeda-sata.txt +++ /dev/null @@ -1,17 +0,0 @@ -* Calxeda SATA Controller - -SATA nodes are defined to describe on-chip Serial ATA controllers. -Each SATA controller should have its own node. - -Required properties: -- compatible : compatible list, contains "calxeda,hb-ahci" -- interrupts : -- reg : - -Example: - sata@ffe08000 { - compatible = "calxeda,hb-ahci"; - reg = <0xffe08000 0x1000>; - interrupts = <115>; - }; - diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c index 0c86c77..9e419e1 100644 --- a/drivers/ata/ahci_platform.c +++ b/drivers/ata/ahci_platform.c @@ -280,6 +280,7 @@ static struct dev_pm_ops ahci_pm_ops = { static const struct of_device_id ahci_of_match[] = { { .compatible = "calxeda,hb-ahci", }, + { .compatible = "snps,spear-ahci", }, {}, }; MODULE_DEVICE_TABLE(of, ahci_of_match); -- cgit v1.1 From 936ad9094462578953042d3395b973f1c9e6fa95 Mon Sep 17 00:00:00 2001 From: Ian Kent Date: Wed, 2 May 2012 07:19:09 -0400 Subject: cifs - check S_AUTOMOUNT in revalidate When revalidating a dentry, if the inode wasn't known to be a dfs entry when the dentry was instantiated, such as when created via ->readdir(), the DCACHE_NEED_AUTOMOUNT flag needs to be set on the dentry in ->d_revalidate(). The false return from cifs_d_revalidate(), due to the inode now being marked with the S_AUTOMOUNT flag, might not invalidate the dentry if there is a concurrent unlazy path walk. This is because the dentry reference count will be at least 2 in this case causing d_invalidate() to return EBUSY. So the asumption that the dentry will be discarded then correctly instantiated via ->lookup() might not hold. Signed-off-by: Ian Kent Reviewed-by: Jeff Layton Cc: Steve French Cc: linux-cifs@vger.kernel.org Signed-off-by: Steve French --- fs/cifs/dir.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index d172c8e..ec4e9a2 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -668,12 +668,19 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd) return 0; else { /* - * Forcibly invalidate automounting directory inodes - * (remote DFS directories) so to have them - * instantiated again for automount + * If the inode wasn't known to be a dfs entry when + * the dentry was instantiated, such as when created + * via ->readdir(), it needs to be set now since the + * attributes will have been updated by + * cifs_revalidate_dentry(). */ - if (IS_AUTOMOUNT(direntry->d_inode)) - return 0; + if (IS_AUTOMOUNT(direntry->d_inode) && + !(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) { + spin_lock(&direntry->d_lock); + direntry->d_flags |= DCACHE_NEED_AUTOMOUNT; + spin_unlock(&direntry->d_lock); + } + return 1; } } -- cgit v1.1 From f966424e9935900e34cace8116d37aa70cff23d0 Mon Sep 17 00:00:00 2001 From: Steve French Date: Wed, 2 May 2012 11:58:19 -0500 Subject: [CIFS] Update cifs version to 1.78 Signed-off-by: Steve French --- fs/cifs/cifsfs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index d1389bb..6536535 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -125,5 +125,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); extern const struct export_operations cifs_export_ops; #endif /* CONFIG_CIFS_NFSD_EXPORT */ -#define CIFS_VERSION "1.77" +#define CIFS_VERSION "1.78" #endif /* _CIFSFS_H */ -- cgit v1.1 From a557b97616c49d81e09c8439831d4c4f13ef4050 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Wed, 2 May 2012 14:02:40 -0400 Subject: cifs: make sure we ignore the credentials= and cred= options Older mount.cifs programs passed this on to the kernel after parsing the file. Make sure the kernel ignores that option. Should fix: https://bugzilla.kernel.org/show_bug.cgi?id=43195 Cc: Sachin Prabhu Reported-by: Ronald Signed-off-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/connect.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index a75902b..5dcc551 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -215,6 +215,8 @@ static const match_table_t cifs_mount_option_tokens = { { Opt_ignore, "cred" }, { Opt_ignore, "credentials" }, + { Opt_ignore, "cred=%s" }, + { Opt_ignore, "credentials=%s" }, { Opt_ignore, "guest" }, { Opt_ignore, "rw" }, { Opt_ignore, "ro" }, -- cgit v1.1 From e419b4cc585680940bc42f8ca8a071d6023fb1bb Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Thu, 3 May 2012 10:16:43 -0700 Subject: vfs: make word-at-a-time accesses handle a non-existing page It turns out that there are more cases than CONFIG_DEBUG_PAGEALLOC that can have holes in the kernel address space: it seems to happen easily with Xen, and it looks like the AMD gart64 code will also punch holes dynamically. Actually hitting that case is still very unlikely, so just do the access, and take an exception and fix it up for the very unlikely case of it being a page-crosser with no next page. And hey, this abstraction might even help other architectures that have other issues with unaligned word accesses than the possible missing next page. IOW, this could do the byte order magic too. Peter Anvin fixed a thinko in the shifting for the exception case. Reported-and-tested-by: Jana Saout Cc: Peter Anvin Signed-off-by: Linus Torvalds --- arch/x86/Kconfig | 2 +- arch/x86/include/asm/word-at-a-time.h | 33 +++++++++++++++++++++++++++++++++ fs/dcache.c | 26 ++++++++++++++++++++++---- fs/namei.c | 4 ++-- 4 files changed, 58 insertions(+), 7 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1d14cc6..c9866b0 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -81,7 +81,7 @@ config X86 select CLKEVT_I8253 select ARCH_HAVE_NMI_SAFE_CMPXCHG select GENERIC_IOMAP - select DCACHE_WORD_ACCESS if !DEBUG_PAGEALLOC + select DCACHE_WORD_ACCESS config INSTRUCTION_DECODER def_bool (KPROBES || PERF_EVENTS) diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h index 6fe6767..e58f03b 100644 --- a/arch/x86/include/asm/word-at-a-time.h +++ b/arch/x86/include/asm/word-at-a-time.h @@ -43,4 +43,37 @@ static inline unsigned long has_zero(unsigned long a) return ((a - REPEAT_BYTE(0x01)) & ~a) & REPEAT_BYTE(0x80); } +/* + * Load an unaligned word from kernel space. + * + * In the (very unlikely) case of the word being a page-crosser + * and the next page not being mapped, take the exception and + * return zeroes in the non-existing part. + */ +static inline unsigned long load_unaligned_zeropad(const void *addr) +{ + unsigned long ret, dummy; + + asm( + "1:\tmov %2,%0\n" + "2:\n" + ".section .fixup,\"ax\"\n" + "3:\t" + "lea %2,%1\n\t" + "and %3,%1\n\t" + "mov (%1),%0\n\t" + "leal %2,%%ecx\n\t" + "andl %4,%%ecx\n\t" + "shll $3,%%ecx\n\t" + "shr %%cl,%0\n\t" + "jmp 2b\n" + ".previous\n" + _ASM_EXTABLE(1b, 3b) + :"=&r" (ret),"=&c" (dummy) + :"m" (*(unsigned long *)addr), + "i" (-sizeof(unsigned long)), + "i" (sizeof(unsigned long)-1)); + return ret; +} + #endif /* _ASM_WORD_AT_A_TIME_H */ diff --git a/fs/dcache.c b/fs/dcache.c index b60ddc4..b80531c 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -141,18 +141,29 @@ int proc_nr_dentry(ctl_table *table, int write, void __user *buffer, * Compare 2 name strings, return 0 if they match, otherwise non-zero. * The strings are both count bytes long, and count is non-zero. */ +#ifdef CONFIG_DCACHE_WORD_ACCESS + +#include +/* + * NOTE! 'cs' and 'scount' come from a dentry, so it has a + * aligned allocation for this particular component. We don't + * strictly need the load_unaligned_zeropad() safety, but it + * doesn't hurt either. + * + * In contrast, 'ct' and 'tcount' can be from a pathname, and do + * need the careful unaligned handling. + */ static inline int dentry_cmp(const unsigned char *cs, size_t scount, const unsigned char *ct, size_t tcount) { -#ifdef CONFIG_DCACHE_WORD_ACCESS unsigned long a,b,mask; if (unlikely(scount != tcount)) return 1; for (;;) { - a = *(unsigned long *)cs; - b = *(unsigned long *)ct; + a = load_unaligned_zeropad(cs); + b = load_unaligned_zeropad(ct); if (tcount < sizeof(unsigned long)) break; if (unlikely(a != b)) @@ -165,7 +176,13 @@ static inline int dentry_cmp(const unsigned char *cs, size_t scount, } mask = ~(~0ul << tcount*8); return unlikely(!!((a ^ b) & mask)); +} + #else + +static inline int dentry_cmp(const unsigned char *cs, size_t scount, + const unsigned char *ct, size_t tcount) +{ if (scount != tcount) return 1; @@ -177,9 +194,10 @@ static inline int dentry_cmp(const unsigned char *cs, size_t scount, tcount--; } while (tcount); return 0; -#endif } +#endif + static void __d_free(struct rcu_head *head) { struct dentry *dentry = container_of(head, struct dentry, d_u.d_rcu); diff --git a/fs/namei.c b/fs/namei.c index 0062dd1..c427919 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -1429,7 +1429,7 @@ unsigned int full_name_hash(const unsigned char *name, unsigned int len) unsigned long hash = 0; for (;;) { - a = *(unsigned long *)name; + a = load_unaligned_zeropad(name); if (len < sizeof(unsigned long)) break; hash += a; @@ -1459,7 +1459,7 @@ static inline unsigned long hash_name(const char *name, unsigned int *hashp) do { hash = (hash + a) * 9; len += sizeof(unsigned long); - a = *(unsigned long *)(name+len); + a = load_unaligned_zeropad(name+len); /* Do we have any NUL or '/' bytes in this word? */ mask = has_zero(a) | has_zero(a ^ REPEAT_BYTE('/')); } while (!mask); -- cgit v1.1 From 54b3a4d311c98ad94b737802a8b5f2c8c6bfd627 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Thu, 3 May 2012 16:50:46 -0400 Subject: efivars: Improve variable validation Ben Hutchings pointed out that the validation in efivars was inadequate - most obviously, an entry with size 0 would server as a DoS against the kernel. Improve this based on his suggestions. Signed-off-by: Matthew Garrett Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds --- drivers/firmware/efivars.c | 46 ++++++++++++++++++++++++++++++---------------- 1 file changed, 30 insertions(+), 16 deletions(-) diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c index 891e467..47408e8 100644 --- a/drivers/firmware/efivars.c +++ b/drivers/firmware/efivars.c @@ -192,18 +192,21 @@ utf16_strncmp(const efi_char16_t *a, const efi_char16_t *b, size_t len) } static bool -validate_device_path(struct efi_variable *var, int match, u8 *buffer, int len) +validate_device_path(struct efi_variable *var, int match, u8 *buffer, + unsigned long len) { struct efi_generic_dev_path *node; int offset = 0; node = (struct efi_generic_dev_path *)buffer; - while (offset < len) { - offset += node->length; + if (len < sizeof(*node)) + return false; - if (offset > len) - return false; + while (offset <= len - sizeof(*node) && + node->length >= sizeof(*node) && + node->length <= len - offset) { + offset += node->length; if ((node->type == EFI_DEV_END_PATH || node->type == EFI_DEV_END_PATH2) && @@ -222,7 +225,8 @@ validate_device_path(struct efi_variable *var, int match, u8 *buffer, int len) } static bool -validate_boot_order(struct efi_variable *var, int match, u8 *buffer, int len) +validate_boot_order(struct efi_variable *var, int match, u8 *buffer, + unsigned long len) { /* An array of 16-bit integers */ if ((len % 2) != 0) @@ -232,19 +236,27 @@ validate_boot_order(struct efi_variable *var, int match, u8 *buffer, int len) } static bool -validate_load_option(struct efi_variable *var, int match, u8 *buffer, int len) +validate_load_option(struct efi_variable *var, int match, u8 *buffer, + unsigned long len) { u16 filepathlength; - int i, desclength = 0; + int i, desclength = 0, namelen; + + namelen = utf16_strnlen(var->VariableName, sizeof(var->VariableName)); /* Either "Boot" or "Driver" followed by four digits of hex */ for (i = match; i < match+4; i++) { - if (hex_to_bin(var->VariableName[i] & 0xff) < 0) + if (var->VariableName[i] > 127 || + hex_to_bin(var->VariableName[i] & 0xff) < 0) return true; } - /* A valid entry must be at least 6 bytes */ - if (len < 6) + /* Reject it if there's 4 digits of hex and then further content */ + if (namelen > match + 4) + return false; + + /* A valid entry must be at least 8 bytes */ + if (len < 8) return false; filepathlength = buffer[4] | buffer[5] << 8; @@ -253,7 +265,7 @@ validate_load_option(struct efi_variable *var, int match, u8 *buffer, int len) * There's no stored length for the description, so it has to be * found by hand */ - desclength = utf16_strsize((efi_char16_t *)(buffer + 6), len) + 2; + desclength = utf16_strsize((efi_char16_t *)(buffer + 6), len - 6) + 2; /* Each boot entry must have a descriptor */ if (!desclength) @@ -275,7 +287,8 @@ validate_load_option(struct efi_variable *var, int match, u8 *buffer, int len) } static bool -validate_uint16(struct efi_variable *var, int match, u8 *buffer, int len) +validate_uint16(struct efi_variable *var, int match, u8 *buffer, + unsigned long len) { /* A single 16-bit integer */ if (len != 2) @@ -285,7 +298,8 @@ validate_uint16(struct efi_variable *var, int match, u8 *buffer, int len) } static bool -validate_ascii_string(struct efi_variable *var, int match, u8 *buffer, int len) +validate_ascii_string(struct efi_variable *var, int match, u8 *buffer, + unsigned long len) { int i; @@ -303,7 +317,7 @@ validate_ascii_string(struct efi_variable *var, int match, u8 *buffer, int len) struct variable_validate { char *name; bool (*validate)(struct efi_variable *var, int match, u8 *data, - int len); + unsigned long len); }; static const struct variable_validate variable_validate[] = { @@ -325,7 +339,7 @@ static const struct variable_validate variable_validate[] = { }; static bool -validate_var(struct efi_variable *var, u8 *data, int len) +validate_var(struct efi_variable *var, u8 *data, unsigned long len) { int i; u16 *unicode_name = var->VariableName; -- cgit v1.1 From 4cb6e116bb97c8b87a1f4f95e99d0c8dda2a6e9b Mon Sep 17 00:00:00 2001 From: Ansis Atteka Date: Thu, 3 May 2012 18:40:38 -0700 Subject: openvswitch: Release rtnl_lock if ovs_vport_cmd_build_info() failed. This patch fixes a possible lock-up bug where rtnl_lock might not get released. Signed-off-by: Ansis Atteka Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index e44e631..4cb615d 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -1641,10 +1641,9 @@ static int ovs_vport_cmd_set(struct sk_buff *skb, struct genl_info *info) reply = ovs_vport_cmd_build_info(vport, info->snd_pid, info->snd_seq, OVS_VPORT_CMD_NEW); if (IS_ERR(reply)) { - err = PTR_ERR(reply); netlink_set_err(init_net.genl_sock, 0, - ovs_dp_vport_multicast_group.id, err); - return 0; + ovs_dp_vport_multicast_group.id, PTR_ERR(reply)); + goto exit_unlock; } genl_notify(reply, genl_info_net(info), info->snd_pid, -- cgit v1.1 From d8f2799b105a24bb0bbd3380a0d56e6348484058 Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Fri, 4 May 2012 00:19:28 +0200 Subject: fs/cifs: fix parsing of dfs referrals MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The problem was that the first referral was parsed more than once and so the caller tried the same referrals multiple times. The problem was introduced partly by commit 066ce6899484d9026acd6ba3a8dbbedb33d7ae1b, where 'ref += le16_to_cpu(ref->Size);' got lost, but that was also wrong... Cc: Signed-off-by: Stefan Metzmacher Tested-by: Björn Jacke Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifssmb.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index f52c5ab..da2f544 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -4844,8 +4844,12 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr, max_len = data_end - temp; node->node_name = cifs_strndup_from_utf16(temp, max_len, is_unicode, nls_codepage); - if (!node->node_name) + if (!node->node_name) { rc = -ENOMEM; + goto parse_DFS_referrals_exit; + } + + ref++; } parse_DFS_referrals_exit: -- cgit v1.1 From b16b1b6cd052acbacc0a15f934bca9b354534d48 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Fri, 4 May 2012 17:03:18 +1000 Subject: md/bitmap: fix calculation of 'chunks' - missing shift. commit 61a0d80c "md/bitmap: discard CHUNK_BLOCK_SHIFT macro" replaced CHUNK_BLOCK_RATIO() by the same text that was replacing CHUNK_BLOCK_SHIFT() - which is clearly wrong. The result is that 'chunks' is often too small by 1, which can sometimes result in a crash (not sure how). So use the correct replacement, and get rid of CHUNK_BLOCK_RATIO which is no longe used. Reported-by: Karl Newman Tested-by: Karl Newman Signed-off-by: NeilBrown --- drivers/md/bitmap.c | 3 +-- drivers/md/bitmap.h | 3 --- 2 files changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c index 97e73e5..17e2b47 100644 --- a/drivers/md/bitmap.c +++ b/drivers/md/bitmap.c @@ -1727,8 +1727,7 @@ int bitmap_create(struct mddev *mddev) bitmap->chunkshift = (ffz(~mddev->bitmap_info.chunksize) - BITMAP_BLOCK_SHIFT); - /* now that chunksize and chunkshift are set, we can use these macros */ - chunks = (blocks + bitmap->chunkshift - 1) >> + chunks = (blocks + (1 << bitmap->chunkshift) - 1) >> bitmap->chunkshift; pages = (chunks + PAGE_COUNTER_RATIO - 1) / PAGE_COUNTER_RATIO; diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h index 55ca5ae..b44b0aba 100644 --- a/drivers/md/bitmap.h +++ b/drivers/md/bitmap.h @@ -101,9 +101,6 @@ typedef __u16 bitmap_counter_t; #define BITMAP_BLOCK_SHIFT 9 -/* how many blocks per chunk? (this is variable) */ -#define CHUNK_BLOCK_RATIO(bitmap) ((bitmap)->mddev->bitmap_info.chunksize >> BITMAP_BLOCK_SHIFT) - #endif /* -- cgit v1.1 From c994ead62ce9599e56344be9b3bead08f242aa79 Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 3 May 2012 17:06:28 -0400 Subject: drm/radeon: clarify and extend wb setup on APUs and NI+ asics MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use family rather than DCE check for clarity, also always use wb on APUs, there will never be AGP variants. Signed-off-by: Alex Deucher Reviewed-by: Michel Dänzer Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_device.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index ea7df16e2..5992502 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -241,8 +241,8 @@ int radeon_wb_init(struct radeon_device *rdev) rdev->wb.use_event = true; } } - /* always use writeback/events on NI */ - if (ASIC_IS_DCE5(rdev)) { + /* always use writeback/events on NI, APUs */ + if (rdev->family >= CHIP_PALM) { rdev->wb.enabled = true; rdev->wb.use_event = true; } -- cgit v1.1 From dad8a3b3eaa0c2ca25368a0b9f65edca84e27a40 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Mon, 23 Apr 2012 12:22:39 +0000 Subject: igb, ixgbe: netdev_tx_reset_queue incorrectly called from tx init path igb and ixgbe incorrectly call netdev_tx_reset_queue() from i{gb|xgbe}_clean_tx_ring() this sort of works in most cases except when the number of real tx queues changes. When the number of real tx queues changes netdev_tx_reset_queue() only gets called on the new number of queues so when we reduce the number of queues we risk triggering the watchdog timer and repeated device resets. So this is not only a cosmetic issue but causes real bugs. For example enabling/disabling DCB or FCoE in ixgbe will trigger this. CC: Alexander Duyck Signed-off-by: John Fastabend Tested-by: John Bishop Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/igb/igb_main.c | 4 ++-- drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c | 2 ++ drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 4 ++-- 3 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 5ec3159..d223500 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2771,8 +2771,6 @@ void igb_configure_tx_ring(struct igb_adapter *adapter, txdctl |= E1000_TXDCTL_QUEUE_ENABLE; wr32(E1000_TXDCTL(reg_idx), txdctl); - - netdev_tx_reset_queue(txring_txq(ring)); } /** @@ -3282,6 +3280,8 @@ static void igb_clean_tx_ring(struct igb_ring *tx_ring) igb_unmap_and_free_tx_resource(tx_ring, buffer_info); } + netdev_tx_reset_queue(txring_txq(tx_ring)); + size = sizeof(struct igb_tx_buffer) * tx_ring->count; memset(tx_ring->tx_buffer_info, 0, size); diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c index 31a2bf7..cfe7d26 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ethtool.c @@ -1780,6 +1780,8 @@ static u16 ixgbe_clean_test_rings(struct ixgbe_ring *rx_ring, rx_desc = IXGBE_RX_DESC(rx_ring, rx_ntc); } + netdev_tx_reset_queue(txring_txq(tx_ring)); + /* re-map buffers to ring, store next to clean values */ ixgbe_alloc_rx_buffers(rx_ring, count); rx_ring->next_to_clean = rx_ntc; diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 50f0700..467948e9 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -2671,8 +2671,6 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, /* enable queue */ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); - netdev_tx_reset_queue(txring_txq(ring)); - /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) @@ -4167,6 +4165,8 @@ static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) ixgbe_unmap_and_free_tx_resource(tx_ring, tx_buffer_info); } + netdev_tx_reset_queue(txring_txq(tx_ring)); + size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; memset(tx_ring->tx_buffer_info, 0, size); -- cgit v1.1 From dd7f5c9e5cb24f72140206d3e5961b4cc5a84034 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Sun, 25 Mar 2012 17:49:25 +0000 Subject: e1000: Silence sparse warnings by correcting type Silence sparse warnings shown below: ... drivers/net/ethernet/intel/e1000/e1000_main.c:3435:17: warning: cast to restricted __le64 drivers/net/ethernet/intel/e1000/e1000_main.c:3435:17: warning: cast to restricted __le64 ... Signed-off-by: Andrei Emeltchenko Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000/e1000_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index 4348b6f..37caa88 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -3380,7 +3380,7 @@ static void e1000_dump(struct e1000_adapter *adapter) for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { struct e1000_tx_desc *tx_desc = E1000_TX_DESC(*tx_ring, i); struct e1000_buffer *buffer_info = &tx_ring->buffer_info[i]; - struct my_u { u64 a; u64 b; }; + struct my_u { __le64 a; __le64 b; }; struct my_u *u = (struct my_u *)tx_desc; const char *type; @@ -3424,7 +3424,7 @@ rx_ring_summary: for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) { struct e1000_rx_desc *rx_desc = E1000_RX_DESC(*rx_ring, i); struct e1000_buffer *buffer_info = &rx_ring->buffer_info[i]; - struct my_u { u64 a; u64 b; }; + struct my_u { __le64 a; __le64 b; }; struct my_u *u = (struct my_u *)rx_desc; const char *type; -- cgit v1.1 From fad9365bcc2a69ae16adc092e8ac192354980665 Mon Sep 17 00:00:00 2001 From: Oleg Matcovschi Date: Tue, 24 Apr 2012 19:02:02 -0700 Subject: ASoC: omap-pcm: Free dma buffers in case of error. Signed-off-by: Oleg Matcovschi Acked-by: Peter Ujfalusi Acked-by: Jarkko Nikula Acked-by: Mark Brown Signed-off-by: Liam Girdwood --- sound/soc/omap/omap-pcm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index a59bd35..5a649da 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -401,6 +401,10 @@ static int omap_pcm_new(struct snd_soc_pcm_runtime *rtd) } out: + /* free preallocated buffers in case of error */ + if (ret) + omap_pcm_free_dma_buffers(pcm); + return ret; } -- cgit v1.1 From b6392bd5b11d694a5d563d2ad1d88137d2cde036 Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Mon, 30 Apr 2012 19:26:09 +0200 Subject: ARM: OMAP1: Amstrad Delta: Fix wrong IRQ base in FIQ handler Commit 384ebe1c2849160d040df3e68634ec506f13d9ff, "gpio/omap: Add DT support to GPIO driver", introduced dynamic IRQ numbering of OMAP GPIO interrupts, breaking all IH_GPIO_BASE based IRQ number calculations. This issue was corrected in the OMAP GPIO driver and the related header file with commit 25db711df3258d125dc1209800317e5c0ef3c870, "gpio/omap: Fix IRQ handling for SPARSE_IRQ". However, the Amstrad Delta FIQ handler, which replaces the gpio-omap driver in serving GPIO interrupts on this board, still uses that outdated method. Fix it. Signed-off-by: Janusz Krzysztofik Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/ams-delta-fiq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap1/ams-delta-fiq.c b/arch/arm/mach-omap1/ams-delta-fiq.c index fcce7ff..cfd98b1 100644 --- a/arch/arm/mach-omap1/ams-delta-fiq.c +++ b/arch/arm/mach-omap1/ams-delta-fiq.c @@ -48,7 +48,7 @@ static irqreturn_t deferred_fiq(int irq, void *dev_id) struct irq_chip *irq_chip = NULL; int gpio, irq_num, fiq_count; - irq_desc = irq_to_desc(IH_GPIO_BASE); + irq_desc = irq_to_desc(gpio_to_irq(AMS_DELTA_GPIO_PIN_KEYBRD_CLK)); if (irq_desc) irq_chip = irq_desc->irq_data.chip; -- cgit v1.1 From e5846fc665d1c3dd32d877febe7402ccd583b8a1 Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Thu, 3 May 2012 12:08:48 -0400 Subject: Btrfs: Add properly locking around add_root_to_dirty_list add_root_to_dirty_list happens once at the very beginning of the transaction, but it is still racey. Signed-off-by: Chris Mason --- fs/btrfs/ctree.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index e801f22..086303b9 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -220,10 +220,12 @@ struct extent_buffer *btrfs_read_lock_root_node(struct btrfs_root *root) */ static void add_root_to_dirty_list(struct btrfs_root *root) { + spin_lock(&root->fs_info->trans_lock); if (root->track_dirty && list_empty(&root->dirty_list)) { list_add(&root->dirty_list, &root->fs_info->dirty_cowonly_roots); } + spin_unlock(&root->fs_info->trans_lock); } /* -- cgit v1.1 From 17de39ac17bf99b8bf0d819d13668d5048836efc Mon Sep 17 00:00:00 2001 From: Josef Bacik Date: Fri, 4 May 2012 15:16:06 -0400 Subject: Btrfs: fix page leak when allocing extent buffers If we happen to alloc a extent buffer and then alloc a page and notice that page is already attached to an extent buffer, we will only unlock it and free our existing eb. Any pages currently attached to that eb will be properly freed, but we don't do the page_cache_release() on the page where we noticed the other extent buffer which can cause us to leak pages and I hope cause the weird issues we've been seeing in this area. Thanks, Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/extent_io.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 0c23e57..2fb52c2 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4120,6 +4120,7 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree, if (atomic_inc_not_zero(&exists->refs)) { spin_unlock(&mapping->private_lock); unlock_page(p); + page_cache_release(p); mark_extent_buffer_accessed(exists); goto free_eb; } @@ -4199,8 +4200,7 @@ free_eb: unlock_page(eb->pages[i]); } - if (!atomic_dec_and_test(&eb->refs)) - return exists; + WARN_ON(!atomic_dec_and_test(&eb->refs)); btrfs_release_extent_buffer(eb); return exists; } -- cgit v1.1 From d04b1debc92535453df2494d0b019edf0bb91003 Mon Sep 17 00:00:00 2001 From: Alexander Block Date: Fri, 4 May 2012 15:16:06 -0400 Subject: btrfs: Fix mismatching struct members in ioctl.h Fix the size members of btrfs_ioctl_ino_path_args and btrfs_ioctl_logical_ino_args. The user space btrfs-progs utilities used __u64 and the kernel headers used __u32 before. Signed-off-by: Alexander Block Signed-off-by: Chris Mason --- fs/btrfs/ioctl.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/btrfs/ioctl.h b/fs/btrfs/ioctl.h index 4f69028..086e6bd 100644 --- a/fs/btrfs/ioctl.h +++ b/fs/btrfs/ioctl.h @@ -252,7 +252,7 @@ struct btrfs_data_container { struct btrfs_ioctl_ino_path_args { __u64 inum; /* in */ - __u32 size; /* in */ + __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *fspath; out */ __u64 fspath; /* out */ @@ -260,7 +260,7 @@ struct btrfs_ioctl_ino_path_args { struct btrfs_ioctl_logical_ino_args { __u64 logical; /* in */ - __u32 size; /* in */ + __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *inodes; out */ __u64 inodes; -- cgit v1.1 From ea9947b4395fa34666086b2fa6f686e94903e047 Mon Sep 17 00:00:00 2001 From: Stefan Behrens Date: Fri, 4 May 2012 15:16:07 -0400 Subject: Btrfs: fix crash in scrub repair code when device is missing Fix that when scrub tries to repair an I/O or checksum error and one of the devices containing the mirror is missing, it crashes in bio_add_page because the bdev is a NULL pointer for missing devices. Reported-by: Marco L. Crociani Signed-off-by: Stefan Behrens Signed-off-by: Chris Mason --- fs/btrfs/scrub.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index b679bf6..7e487be 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -998,6 +998,7 @@ static int scrub_setup_recheck_block(struct scrub_dev *sdev, page = sblock->pagev + page_index; page->logical = logical; page->physical = bbio->stripes[mirror_index].physical; + /* for missing devices, bdev is NULL */ page->bdev = bbio->stripes[mirror_index].dev->bdev; page->mirror_num = mirror_index + 1; page->page = alloc_page(GFP_NOFS); @@ -1042,6 +1043,12 @@ static int scrub_recheck_block(struct btrfs_fs_info *fs_info, struct scrub_page *page = sblock->pagev + page_num; DECLARE_COMPLETION_ONSTACK(complete); + if (page->bdev == NULL) { + page->io_error = 1; + sblock->no_io_error_seen = 0; + continue; + } + BUG_ON(!page->page); bio = bio_alloc(GFP_NOFS, 1); if (!bio) -- cgit v1.1 From 08ca7444f589bedf9ad5d82883e5d0754852d73b Mon Sep 17 00:00:00 2001 From: Archit Taneja Date: Thu, 19 Apr 2012 17:39:16 +0530 Subject: ARM: OMAP: Revert "ARM: OMAP: ctrl: Fix CONTROL_DSIPHY register fields" This reverts commit 46f8c3c7e95c0d30d95911e7975ddc4f93b3e237. The commit above swapped the DSI1_PPID and DSI2_PPID register fields in CONTROL_DSIPHY to be in sync with the newer public OMAP TRMs(after version V). With this commit, contention errors were reported on DSI lanes some OMAP4 SDPs. After probing the DSI lanes on OMAP4 SDP, it was seen that setting bits in the DSI2_PPID field was pulling up voltage on DSI1 lanes, and DSI1_PPID field was pulling up voltage on DSI2 lanes. This proves that the current version of OMAP4 TRM is incorrect, swap the position of register fields according to the older TRM versions as they were correct. Cc: stable@vger.kernel.org # v3.2+ Acked-by: Tomi Valkeinen Signed-off-by: Archit Taneja Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h b/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h index 1e2d332..c88420d 100644 --- a/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h +++ b/arch/arm/mach-omap2/include/mach/ctrl_module_pad_core_44xx.h @@ -941,10 +941,10 @@ #define OMAP4_DSI2_LANEENABLE_MASK (0x7 << 29) #define OMAP4_DSI1_LANEENABLE_SHIFT 24 #define OMAP4_DSI1_LANEENABLE_MASK (0x1f << 24) -#define OMAP4_DSI2_PIPD_SHIFT 19 -#define OMAP4_DSI2_PIPD_MASK (0x1f << 19) -#define OMAP4_DSI1_PIPD_SHIFT 14 -#define OMAP4_DSI1_PIPD_MASK (0x1f << 14) +#define OMAP4_DSI1_PIPD_SHIFT 19 +#define OMAP4_DSI1_PIPD_MASK (0x1f << 19) +#define OMAP4_DSI2_PIPD_SHIFT 14 +#define OMAP4_DSI2_PIPD_MASK (0x1f << 14) /* CONTROL_MCBSPLP */ #define OMAP4_ALBCTRLRX_FSX_SHIFT 31 -- cgit v1.1 From d1d0589a565a2528a044cfd680141c3e2db18d0a Mon Sep 17 00:00:00 2001 From: Bjarke Istrup Pedersen Date: Fri, 4 May 2012 14:01:45 -0700 Subject: arch/x86/platform/geode/net5501.c: change active_low to 0 for LED driver It seems that there was an error with the active_low = 1 for the LED, since it should be set to 0 (meaning that active is high, since 0 is false, hence the confusion. The wiki article about it confuses it, since it contradicts itself, regarding what turns on the LED. I have tested 3.4-rc2 on my net5501 with this patch, and it makes the LED behave correctly, where "none" turns it off, and "default-on" turns it on, when echoed onto the trigger "file" in /sys/class/leds. Signed-off-by: Bjarke Istrup Pedersen Link: http://lkml.kernel.org/r/20120504210146.62186A018B@akpm.mtv.corp.google.com Cc: Philip Prindeville Signed-off-by: Andrew Morton Signed-off-by: H. Peter Anvin --- arch/x86/platform/geode/net5501.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/platform/geode/net5501.c b/arch/x86/platform/geode/net5501.c index 66d377e..646e3b5 100644 --- a/arch/x86/platform/geode/net5501.c +++ b/arch/x86/platform/geode/net5501.c @@ -63,7 +63,7 @@ static struct gpio_led net5501_leds[] = { .name = "net5501:1", .gpio = 6, .default_trigger = "default-on", - .active_low = 1, + .active_low = 0, }, }; -- cgit v1.1 From ab27a20e6212cd1d96d813352b47e1fc1cfd01db Mon Sep 17 00:00:00 2001 From: Yong Wang Date: Fri, 4 May 2012 14:02:44 -0700 Subject: intel_mid_powerbtn: mark irq as IRQF_NO_SUSPEND So that the power button still wakes up the platform. Signed-off-by: Pierre Tardy Link: http://lkml.kernel.org/r/20120504210244.F2EA5A018B@akpm.mtv.corp.google.com Tested-by: Kangkai Yin Tested-by: Yong Wang Signed-off-by: Kirill A. Shutemov Signed-off-by: Alan Cox Cc: Matthew Garrett Signed-off-by: Andrew Morton Signed-off-by: H. Peter Anvin --- drivers/platform/x86/intel_mid_powerbtn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/platform/x86/intel_mid_powerbtn.c b/drivers/platform/x86/intel_mid_powerbtn.c index 0a3594c..bcbad84 100644 --- a/drivers/platform/x86/intel_mid_powerbtn.c +++ b/drivers/platform/x86/intel_mid_powerbtn.c @@ -78,7 +78,7 @@ static int __devinit mfld_pb_probe(struct platform_device *pdev) input_set_capability(input, EV_KEY, KEY_POWER); - error = request_threaded_irq(irq, NULL, mfld_pb_isr, 0, + error = request_threaded_irq(irq, NULL, mfld_pb_isr, IRQF_NO_SUSPEND, DRIVER_NAME, input); if (error) { dev_err(&pdev->dev, "Unable to request irq %d for mfld power" -- cgit v1.1 From 2f624278626677bfaf73fef97f86b37981621f5c Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 May 2012 14:46:02 -0700 Subject: Fix __read_seqcount_begin() to use ACCESS_ONCE for sequence value read We really need to use a ACCESS_ONCE() on the sequence value read in __read_seqcount_begin(), because otherwise the compiler might end up reloading the value in between the test and the return of it. As a result, it might end up returning an odd value (which means that a write is in progress). If the reader is then fast enough that that odd value is still the current one when the read_seqcount_retry() is done, we might end up with a "successful" read sequence, even despite the concurrent write being active. In practice this probably never really happens - there just isn't anything else going on around the read of the sequence count, and the common case is that we end up having a read barrier immediately afterwards. So the code sequence in which gcc might decide to reaload from memory is small, and there's no reason to believe it would ever actually do the reload. But if the compiler ever were to decide to do so, it would be incredibly annoying to debug. Let's just make sure. Cc: stable@kernel.org Signed-off-by: Linus Torvalds --- include/linux/seqlock.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index c6db9fb..bb1fac5 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -141,7 +141,7 @@ static inline unsigned __read_seqcount_begin(const seqcount_t *s) unsigned ret; repeat: - ret = s->sequence; + ret = ACCESS_ONCE(s->sequence); if (unlikely(ret & 1)) { cpu_relax(); goto repeat; -- cgit v1.1 From 4f988f152ee087831ea5c1c77cda4454cacc052c Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 4 May 2012 15:13:54 -0700 Subject: seqlock: add 'raw_seqcount_begin()' function The normal read_seqcount_begin() function will wait for any current writers to exit their critical region by looping until the sequence count is even. That "wait for sequence count to stabilize" is the right thing to do if the read-locker will just retry the whole operation on contention: no point in doing a potentially expensive reader sequence if we know at the beginning that we'll just end up re-doing it all. HOWEVER. Some users don't actually retry the operation, but instead will abort and do the operation with proper locking. So the sequence count case may be the optimistic quick case, but in the presense of writers you may want to do full locking in order to guarantee forward progress. The prime example of this would be the RCU name lookup. And in that case, you may well be better off without the "retry early", and are in a rush to instead get to the failure handling. Thus this "raw" interface that just returns the sequence number without testing it - it just forces the low bit to zero so that read_seqcount_retry() will always fail such a "active concurrent writer" scenario. Signed-off-by: Linus Torvalds --- include/linux/seqlock.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index bb1fac5..600060e2 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -166,6 +166,27 @@ static inline unsigned read_seqcount_begin(const seqcount_t *s) } /** + * raw_seqcount_begin - begin a seq-read critical section + * @s: pointer to seqcount_t + * Returns: count to be passed to read_seqcount_retry + * + * raw_seqcount_begin opens a read critical section of the given seqcount. + * Validity of the critical section is tested by checking read_seqcount_retry + * function. + * + * Unlike read_seqcount_begin(), this function will not wait for the count + * to stabilize. If a writer is active when we begin, we will fail the + * read_seqcount_retry() instead of stabilizing at the beginning of the + * critical section. + */ +static inline unsigned raw_seqcount_begin(const seqcount_t *s) +{ + unsigned ret = ACCESS_ONCE(s->sequence); + smp_rmb(); + return ret & ~1; +} + +/** * __read_seqcount_retry - end a seq-read critical section (without barrier) * @s: pointer to seqcount_t * @start: count, from read_seqcount_begin -- cgit v1.1 From a03a09b2245b4aa255760796e0c0d05b5d79b2a8 Mon Sep 17 00:00:00 2001 From: Dave Jones Date: Fri, 4 May 2012 12:04:17 -0400 Subject: CPU frequency drivers MAINTAINERS update Remove myself as cpufreq maintainer. x86 driver changes can go through the regular x86/ACPI trees. ARM driver changes through the ARM trees. cpufreq core changes are rare these days, and can just go to lkml/direct. Signed-off-by: Dave Jones Signed-off-by: Linus Torvalds --- MAINTAINERS | 3 --- 1 file changed, 3 deletions(-) diff --git a/MAINTAINERS b/MAINTAINERS index 57bc677..7071633 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1968,10 +1968,7 @@ S: Maintained F: drivers/net/ethernet/ti/cpmac.c CPU FREQUENCY DRIVERS -M: Dave Jones L: cpufreq@vger.kernel.org -W: http://www.codemonkey.org.uk/projects/cpufreq/ -T: git git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq.git S: Maintained F: drivers/cpufreq/ F: include/linux/cpufreq.h -- cgit v1.1 From 6f24f892871acc47b40dd594c63606a17c714f77 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Fri, 4 May 2012 12:09:39 -0700 Subject: hfsplus: Fix potential buffer overflows Commit ec81aecb2966 ("hfs: fix a potential buffer overflow") fixed a few potential buffer overflows in the hfs filesystem. But as Timo Warns pointed out, these changes also need to be made on the hfsplus filesystem as well. Reported-by: Timo Warns Acked-by: WANG Cong Cc: Alexey Khoroshilov Cc: Miklos Szeredi Cc: Sage Weil Cc: Eugene Teo Cc: Roman Zippel Cc: Al Viro Cc: Christoph Hellwig Cc: Alexey Dobriyan Cc: Dave Anderson Cc: stable Cc: Andrew Morton Signed-off-by: Greg Kroah-Hartman Signed-off-by: Linus Torvalds --- fs/hfsplus/catalog.c | 4 ++++ fs/hfsplus/dir.c | 11 +++++++++++ 2 files changed, 15 insertions(+) diff --git a/fs/hfsplus/catalog.c b/fs/hfsplus/catalog.c index 4dfbfec..ec2a9c2 100644 --- a/fs/hfsplus/catalog.c +++ b/fs/hfsplus/catalog.c @@ -366,6 +366,10 @@ int hfsplus_rename_cat(u32 cnid, err = hfs_brec_find(&src_fd); if (err) goto out; + if (src_fd.entrylength > sizeof(entry) || src_fd.entrylength < 0) { + err = -EIO; + goto out; + } hfs_bnode_read(src_fd.bnode, &entry, src_fd.entryoffset, src_fd.entrylength); diff --git a/fs/hfsplus/dir.c b/fs/hfsplus/dir.c index 88e155f..26b53fb 100644 --- a/fs/hfsplus/dir.c +++ b/fs/hfsplus/dir.c @@ -150,6 +150,11 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) filp->f_pos++; /* fall through */ case 1: + if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { + err = -EIO; + goto out; + } + hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); if (be16_to_cpu(entry.type) != HFSPLUS_FOLDER_THREAD) { @@ -181,6 +186,12 @@ static int hfsplus_readdir(struct file *filp, void *dirent, filldir_t filldir) err = -EIO; goto out; } + + if (fd.entrylength > sizeof(entry) || fd.entrylength < 0) { + err = -EIO; + goto out; + } + hfs_bnode_read(fd.bnode, &entry, fd.entryoffset, fd.entrylength); type = be16_to_cpu(entry.type); -- cgit v1.1 From 1cc0c998fdf2cb665d625fb565a0d6db5c81c639 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Mon, 23 Apr 2012 09:03:49 +0800 Subject: ACPI: Fix D3hot v D3cold confusion Before this patch, ACPI_STATE_D3 incorrectly referenced D3hot in some places, but D3cold in other places. After this patch, ACPI_STATE_D3 always means ACPI_STATE_D3_COLD; and all references to D3hot use ACPI_STATE_D3_HOT. ACPI's _PR3 method is used to enter both D3hot and D3cold states. What distinguishes D3hot from D3cold is the presence _PR3 (Power Resources for D3hot) If these resources are all ON, then the state is D3hot. If _PR3 is not present, or all _PR0 resources for the devices are OFF, then the state is D3cold. This patch applies after Linux-3.4-rc1. A future syntax cleanup may remove ACPI_STATE_D3 to emphasize that it always means ACPI_STATE_D3_COLD. Signed-off-by: Lin Ming Acked-by: Rafael J. Wysocki Reviewed-by: Aaron Lu Signed-off-by: Len Brown --- drivers/acpi/power.c | 2 +- drivers/acpi/scan.c | 17 +++++++---------- drivers/pci/pci-acpi.c | 4 ++-- include/acpi/actypes.h | 7 ++++--- 4 files changed, 14 insertions(+), 16 deletions(-) diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 7049a7d..330bb4d 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -631,7 +631,7 @@ int acpi_power_get_inferred_state(struct acpi_device *device, int *state) * We know a device's inferred power state when all the resources * required for a given D-state are 'on'. */ - for (i = ACPI_STATE_D0; i < ACPI_STATE_D3; i++) { + for (i = ACPI_STATE_D0; i < ACPI_STATE_D3_HOT; i++) { list = &device->power.states[i].resources; if (list->count < 1) continue; diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 767e2dc..7417267 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -869,7 +869,7 @@ static int acpi_bus_get_power_flags(struct acpi_device *device) /* * Enumerate supported power management states */ - for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3; i++) { + for (i = ACPI_STATE_D0; i <= ACPI_STATE_D3_HOT; i++) { struct acpi_device_power_state *ps = &device->power.states[i]; char object_name[5] = { '_', 'P', 'R', '0' + i, '\0' }; @@ -884,21 +884,18 @@ static int acpi_bus_get_power_flags(struct acpi_device *device) acpi_bus_add_power_resource(ps->resources.handles[j]); } - /* The exist of _PR3 indicates D3Cold support */ - if (i == ACPI_STATE_D3) { - status = acpi_get_handle(device->handle, object_name, &handle); - if (ACPI_SUCCESS(status)) - device->power.states[ACPI_STATE_D3_COLD].flags.valid = 1; - } - /* Evaluate "_PSx" to see if we can do explicit sets */ object_name[2] = 'S'; status = acpi_get_handle(device->handle, object_name, &handle); if (ACPI_SUCCESS(status)) ps->flags.explicit_set = 1; - /* State is valid if we have some power control */ - if (ps->resources.count || ps->flags.explicit_set) + /* + * State is valid if there are means to put the device into it. + * D3hot is only valid if _PR3 present. + */ + if (ps->resources.count || + (ps->flags.explicit_set && i < ACPI_STATE_D3_HOT)) ps->flags.valid = 1; ps->power = -1; /* Unknown - driver assigned */ diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 0f150f2..1929c0c 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -200,7 +200,7 @@ static pci_power_t acpi_pci_choose_state(struct pci_dev *pdev) return PCI_D1; case ACPI_STATE_D2: return PCI_D2; - case ACPI_STATE_D3: + case ACPI_STATE_D3_HOT: return PCI_D3hot; case ACPI_STATE_D3_COLD: return PCI_D3cold; @@ -223,7 +223,7 @@ static int acpi_pci_set_power_state(struct pci_dev *dev, pci_power_t state) [PCI_D0] = ACPI_STATE_D0, [PCI_D1] = ACPI_STATE_D1, [PCI_D2] = ACPI_STATE_D2, - [PCI_D3hot] = ACPI_STATE_D3, + [PCI_D3hot] = ACPI_STATE_D3_HOT, [PCI_D3cold] = ACPI_STATE_D3 }; int error = -EINVAL; diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index eba6604..e8bcc47 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -499,9 +499,10 @@ typedef u64 acpi_integer; #define ACPI_STATE_D0 (u8) 0 #define ACPI_STATE_D1 (u8) 1 #define ACPI_STATE_D2 (u8) 2 -#define ACPI_STATE_D3 (u8) 3 -#define ACPI_STATE_D3_COLD (u8) 4 -#define ACPI_D_STATES_MAX ACPI_STATE_D3_COLD +#define ACPI_STATE_D3_HOT (u8) 3 +#define ACPI_STATE_D3 (u8) 4 +#define ACPI_STATE_D3_COLD ACPI_STATE_D3 +#define ACPI_D_STATES_MAX ACPI_STATE_D3 #define ACPI_D_STATE_COUNT 5 #define ACPI_STATE_C0 (u8) 0 -- cgit v1.1 From e787ec1376e862fcea1bfd523feb7c5fb43ecdb9 Mon Sep 17 00:00:00 2001 From: Tim Bird Date: Wed, 2 May 2012 22:55:39 +0100 Subject: ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve The inline assembly in kernel_execve() uses r8 and r9. Since this code sequence does not return, it usually doesn't matter if the register clobber list is accurate. However, I saw a case where a particular version of gcc used r8 as an intermediate for the value eventually passed to r9. Because r8 is used in the inline assembly, and not mentioned in the clobber list, r9 was set to an incorrect value. This resulted in a kernel panic on execution of the first user-space program in the system. r9 is used in ret_to_user as the thread_info pointer, and if it's wrong, bad things happen. Cc: Signed-off-by: Tim Bird Signed-off-by: Russell King --- arch/arm/kernel/sys_arm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/kernel/sys_arm.c b/arch/arm/kernel/sys_arm.c index d2b1779..76cbb05 100644 --- a/arch/arm/kernel/sys_arm.c +++ b/arch/arm/kernel/sys_arm.c @@ -115,7 +115,7 @@ int kernel_execve(const char *filename, "Ir" (THREAD_START_SP - sizeof(regs)), "r" (®s), "Ir" (sizeof(regs)) - : "r0", "r1", "r2", "r3", "ip", "lr", "memory"); + : "r0", "r1", "r2", "r3", "r8", "r9", "ip", "lr", "memory"); out: return ret; -- cgit v1.1 From 6a68b6f574c8ad2c1d90f0db8fd95b8abe8a0a73 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 4 May 2012 17:52:02 +0100 Subject: ARM: 7411/1: audit: fix treatment of saved ip register during syscall tracing The ARM audit code incorrectly uses the saved application ip register value to infer syscall entry or exit. Additionally, the saved value will be clobbered if the current task is not being traced, which can lead to libc corruption if ip is live (apparently glibc uses it for the TLS pointer). This patch fixes the syscall tracing code so that the why parameter is used to infer the syscall direction and the saved ip is only updated if we know that we will be signalling a ptrace trap. Reported-and-Tested-by: Jon Masters Cc: stable@vger.kernel.org Cc: Eric Paris Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/ptrace.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index 80abafb..d8dbe9c 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -916,14 +916,7 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) { unsigned long ip; - /* - * Save IP. IP is used to denote syscall entry/exit: - * IP = 0 -> entry, = 1 -> exit - */ - ip = regs->ARM_ip; - regs->ARM_ip = why; - - if (!ip) + if (why) audit_syscall_exit(regs); else audit_syscall_entry(AUDIT_ARCH_NR, scno, regs->ARM_r0, @@ -936,6 +929,13 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) current_thread_info()->syscall = scno; + /* + * IP is used to denote syscall entry/exit: + * IP = 0 -> entry, =1 -> exit + */ + ip = regs->ARM_ip; + regs->ARM_ip = why; + /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) -- cgit v1.1 From 2f978366984a418f38fcf44137be1fbc5a89cfd9 Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Fri, 4 May 2012 17:53:52 +0100 Subject: ARM: 7412/1: audit: use only AUDIT_ARCH_ARM regardless of endianness The machine endianness has no direct correspondence to the syscall ABI, so use only AUDIT_ARCH_ARM when identifying the ABI to the audit tools in userspace. Cc: stable@vger.kernel.org Signed-off-by: Will Deacon Signed-off-by: Russell King --- arch/arm/kernel/ptrace.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c index d8dbe9c..9650c14 100644 --- a/arch/arm/kernel/ptrace.c +++ b/arch/arm/kernel/ptrace.c @@ -906,12 +906,6 @@ long arch_ptrace(struct task_struct *child, long request, return ret; } -#ifdef __ARMEB__ -#define AUDIT_ARCH_NR AUDIT_ARCH_ARMEB -#else -#define AUDIT_ARCH_NR AUDIT_ARCH_ARM -#endif - asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) { unsigned long ip; @@ -919,7 +913,7 @@ asmlinkage int syscall_trace(int why, struct pt_regs *regs, int scno) if (why) audit_syscall_exit(regs); else - audit_syscall_entry(AUDIT_ARCH_NR, scno, regs->ARM_r0, + audit_syscall_entry(AUDIT_ARCH_ARM, scno, regs->ARM_r0, regs->ARM_r1, regs->ARM_r2, regs->ARM_r3); if (!test_thread_flag(TIF_SYSCALL_TRACE)) -- cgit v1.1 From 377485f6244af255b04d662cf19cddbbc4ae4310 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Sat, 5 May 2012 17:06:35 +0200 Subject: init: don't try mounting device as nfs root unless type fully matches Currently, we'll try mounting any device who's major device number is UNNAMED_MAJOR as NFS root. This would happen for non-NFS devices as well (such as 9p devices) but it wouldn't cause any issues since mounting the device as NFS would fail quickly and the code proceeded to doing the proper mount: [ 101.522716] VFS: Unable to mount root fs via NFS, trying floppy. [ 101.534499] VFS: Mounted root (9p filesystem) on device 0:18. Commit 6829a048102a ("NFS: Retry mounting NFSROOT") introduced retries when mounting NFS root, which means that now we don't immediately fail and instead it takes an additional 90+ seconds until we stop retrying, which has revealed the issue this patch fixes. This meant that it would take an additional 90 seconds to boot when we're not using a device type which gets detected in order before NFS. This patch modifies the NFS type check to require device type to be 'Root_NFS' instead of requiring the device to have an UNNAMED_MAJOR major. This makes boot process cleaner since we now won't go through the NFS mounting code at all when the device isn't an NFS root ("/dev/nfs"). Signed-off-by: Sasha Levin Signed-off-by: Linus Torvalds --- init/do_mounts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/do_mounts.c b/init/do_mounts.c index 0e93f92..42b0707 100644 --- a/init/do_mounts.c +++ b/init/do_mounts.c @@ -472,7 +472,7 @@ void __init change_floppy(char *fmt, ...) void __init mount_root(void) { #ifdef CONFIG_ROOT_NFS - if (MAJOR(ROOT_DEV) == UNNAMED_MAJOR) { + if (ROOT_DEV == Root_NFS) { if (mount_nfs_root()) return; -- cgit v1.1 From 49a5f3cf6a956360bb43e5f8d0c592a8daea8ebd Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Sat, 5 May 2012 22:49:10 +0200 Subject: TTY: pdc_cons, fix regression in close The test in pdc_console_tty_close '!tty->count' was always wrong because tty->count is decremented after tty->ops->close is called and thus can never be zero. Hence the 'then' branch was never executed and the timer never deleted. This did not matter until commit 5dd5bc40f3b6 ("TTY: pdc_cons, use tty_port"). There we needed to set TTY in tty_port to NULL, but this never happened due to the bug above. So change the test to really trigger at the last close by changing the condition to 'tty->count == 1'. Well, the driver should not touch tty->count at all. It should use tty_port->count and count open count there itself. Signed-off-by: Jiri Slaby Reported-and-tested-by: Mikulas Patocka Cc: Kyle McMartin Cc: Helge Deller Cc: "James E.J. Bottomley" Signed-off-by: Linus Torvalds --- arch/parisc/kernel/pdc_cons.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index 4f00459..0b33933 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -104,7 +104,7 @@ static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp) static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp) { - if (!tty->count) { + if (tty->count == 1) { del_timer_sync(&pdc_console_timer); tty_port_tty_set(&tty_port, NULL); } -- cgit v1.1 From fde165b2a29673aabf18ceff14dea1f1cfb0daad Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Sat, 5 May 2012 20:58:13 +0100 Subject: ARM: 7414/1: SMP: prevent use of the console when using idmap_pgd Commit 4e8ee7de227e3ab9a72040b448ad728c5428a042 (ARM: SMP: use idmap_pgd for mapping MMU enable during secondary booting) switched secondary boot to use idmap_pgd, which is initialized during early_initcall, instead of a page table initialized during __cpu_up. This causes idmap_pgd to contain the static mappings but be missing all dynamic mappings. If a console is registered that creates a dynamic mapping, the printk in secondary_start_kernel will trigger a data abort on the missing mapping before the exception handlers have been initialized, leading to a hang. Initial boot is not affected because no consoles have been registered, and resume is usually not affected because the offending console is suspended. Onlining a cpu with hotplug triggers the problem. A workaround is to the printk in secondary_start_kernel until after the page tables have been switched back to init_mm. Cc: Signed-off-by: Colin Cross Signed-off-by: Russell King --- arch/arm/kernel/smp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index f6a4d32..8f46446 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -251,8 +251,6 @@ asmlinkage void __cpuinit secondary_start_kernel(void) struct mm_struct *mm = &init_mm; unsigned int cpu = smp_processor_id(); - printk("CPU%u: Booted secondary processor\n", cpu); - /* * All kernel threads share the same mm context; grab a * reference and switch to it. @@ -264,6 +262,8 @@ asmlinkage void __cpuinit secondary_start_kernel(void) enter_lazy_tlb(mm, current); local_flush_tlb_all(); + printk("CPU%u: Booted secondary processor\n", cpu); + cpu_init(); preempt_disable(); trace_hardirqs_off(); -- cgit v1.1 From c914f55f7cdfafe9d7d5b248751902c7ab57691e Mon Sep 17 00:00:00 2001 From: Mark Hills Date: Mon, 30 Apr 2012 19:39:22 +0100 Subject: ALSA: echoaudio: Remove incorrect part of assertion This assertion seems to imply that chip->dsp_code_to_load is a pointer. It's actually an integer handle on the actual firmware, and 0 has no special meaning. The assertion prevents initialisation of a Darla20 card, but would also affect other models. It seems it was introduced in commit dd7b254d. ALSA sound/pci/echoaudio/echoaudio.c:2061 Echoaudio driver starting... ALSA sound/pci/echoaudio/echoaudio.c:1969 chip=ebe4e000 ALSA sound/pci/echoaudio/echoaudio.c:2007 pci=ed568000 irq=19 subdev=0010 Init hardware... ALSA sound/pci/echoaudio/darla20_dsp.c:36 init_hw() - Darla20 ------------[ cut here ]------------ WARNING: at sound/pci/echoaudio/echoaudio_dsp.c:478 init_hw+0x1d1/0x86c [snd_darla20]() Hardware name: Dell DM051 BUG? (!chip->dsp_code_to_load || !chip->comm_page) Signed-off-by: Mark Hills Cc: Signed-off-by: Takashi Iwai --- sound/pci/echoaudio/echoaudio_dsp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/pci/echoaudio/echoaudio_dsp.c b/sound/pci/echoaudio/echoaudio_dsp.c index 64417a7..d8c670c 100644 --- a/sound/pci/echoaudio/echoaudio_dsp.c +++ b/sound/pci/echoaudio/echoaudio_dsp.c @@ -475,7 +475,7 @@ static int load_firmware(struct echoaudio *chip) const struct firmware *fw; int box_type, err; - if (snd_BUG_ON(!chip->dsp_code_to_load || !chip->comm_page)) + if (snd_BUG_ON(!chip->comm_page)) return -EPERM; /* See if the ASIC is present and working - only if the DSP is already loaded */ -- cgit v1.1 From b9fab919b748c7b39c19ff236ed6c5682c266dde Mon Sep 17 00:00:00 2001 From: Chris Mason Date: Sun, 6 May 2012 07:23:47 -0400 Subject: Btrfs: avoid sleeping in verify_parent_transid while atomic verify_parent_transid needs to lock the extent range to make sure no IO is underway, and so it can safely clear the uptodate bits if our checks fail. But, a few callers are using it with spinlocks held. Most of the time, the generation numbers are going to match, and we don't want to switch to a blocking lock just for the error case. This adds an atomic flag to verify_parent_transid, and changes it to return EAGAIN if it needs to block to properly verifiy things. Signed-off-by: Chris Mason --- fs/btrfs/ctree.c | 26 +++++++++++++++++--------- fs/btrfs/disk-io.c | 18 +++++++++++++----- fs/btrfs/disk-io.h | 3 ++- fs/btrfs/extent-tree.c | 2 +- fs/btrfs/tree-log.c | 2 +- 5 files changed, 34 insertions(+), 17 deletions(-) diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c index 086303b9..4106264 100644 --- a/fs/btrfs/ctree.c +++ b/fs/btrfs/ctree.c @@ -725,7 +725,7 @@ int btrfs_realloc_node(struct btrfs_trans_handle *trans, cur = btrfs_find_tree_block(root, blocknr, blocksize); if (cur) - uptodate = btrfs_buffer_uptodate(cur, gen); + uptodate = btrfs_buffer_uptodate(cur, gen, 0); else uptodate = 0; if (!cur || !uptodate) { @@ -1360,7 +1360,12 @@ static noinline int reada_for_balance(struct btrfs_root *root, block1 = btrfs_node_blockptr(parent, slot - 1); gen = btrfs_node_ptr_generation(parent, slot - 1); eb = btrfs_find_tree_block(root, block1, blocksize); - if (eb && btrfs_buffer_uptodate(eb, gen)) + /* + * if we get -eagain from btrfs_buffer_uptodate, we + * don't want to return eagain here. That will loop + * forever + */ + if (eb && btrfs_buffer_uptodate(eb, gen, 1) != 0) block1 = 0; free_extent_buffer(eb); } @@ -1368,7 +1373,7 @@ static noinline int reada_for_balance(struct btrfs_root *root, block2 = btrfs_node_blockptr(parent, slot + 1); gen = btrfs_node_ptr_generation(parent, slot + 1); eb = btrfs_find_tree_block(root, block2, blocksize); - if (eb && btrfs_buffer_uptodate(eb, gen)) + if (eb && btrfs_buffer_uptodate(eb, gen, 1) != 0) block2 = 0; free_extent_buffer(eb); } @@ -1506,8 +1511,9 @@ read_block_for_search(struct btrfs_trans_handle *trans, tmp = btrfs_find_tree_block(root, blocknr, blocksize); if (tmp) { - if (btrfs_buffer_uptodate(tmp, 0)) { - if (btrfs_buffer_uptodate(tmp, gen)) { + /* first we do an atomic uptodate check */ + if (btrfs_buffer_uptodate(tmp, 0, 1) > 0) { + if (btrfs_buffer_uptodate(tmp, gen, 1) > 0) { /* * we found an up to date block without * sleeping, return @@ -1525,8 +1531,9 @@ read_block_for_search(struct btrfs_trans_handle *trans, free_extent_buffer(tmp); btrfs_set_path_blocking(p); + /* now we're allowed to do a blocking uptodate check */ tmp = read_tree_block(root, blocknr, blocksize, gen); - if (tmp && btrfs_buffer_uptodate(tmp, gen)) { + if (tmp && btrfs_buffer_uptodate(tmp, gen, 0) > 0) { *eb_ret = tmp; return 0; } @@ -1561,7 +1568,7 @@ read_block_for_search(struct btrfs_trans_handle *trans, * and give up so that our caller doesn't loop forever * on our EAGAINs. */ - if (!btrfs_buffer_uptodate(tmp, 0)) + if (!btrfs_buffer_uptodate(tmp, 0, 0)) ret = -EIO; free_extent_buffer(tmp); } @@ -4045,7 +4052,7 @@ again: tmp = btrfs_find_tree_block(root, blockptr, btrfs_level_size(root, level - 1)); - if (tmp && btrfs_buffer_uptodate(tmp, gen)) { + if (tmp && btrfs_buffer_uptodate(tmp, gen, 1) > 0) { free_extent_buffer(tmp); break; } @@ -4168,7 +4175,8 @@ next: struct extent_buffer *cur; cur = btrfs_find_tree_block(root, blockptr, btrfs_level_size(root, level - 1)); - if (!cur || !btrfs_buffer_uptodate(cur, gen)) { + if (!cur || + btrfs_buffer_uptodate(cur, gen, 1) <= 0) { slot++; if (cur) free_extent_buffer(cur); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index d0c969b..a7ffc88 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -323,7 +323,8 @@ static int csum_tree_block(struct btrfs_root *root, struct extent_buffer *buf, * in the wrong place. */ static int verify_parent_transid(struct extent_io_tree *io_tree, - struct extent_buffer *eb, u64 parent_transid) + struct extent_buffer *eb, u64 parent_transid, + int atomic) { struct extent_state *cached_state = NULL; int ret; @@ -331,6 +332,9 @@ static int verify_parent_transid(struct extent_io_tree *io_tree, if (!parent_transid || btrfs_header_generation(eb) == parent_transid) return 0; + if (atomic) + return -EAGAIN; + lock_extent_bits(io_tree, eb->start, eb->start + eb->len - 1, 0, &cached_state); if (extent_buffer_uptodate(eb) && @@ -372,7 +376,8 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root, ret = read_extent_buffer_pages(io_tree, eb, start, WAIT_COMPLETE, btree_get_extent, mirror_num); - if (!ret && !verify_parent_transid(io_tree, eb, parent_transid)) + if (!ret && !verify_parent_transid(io_tree, eb, + parent_transid, 0)) break; /* @@ -1202,7 +1207,7 @@ static int __must_check find_and_setup_root(struct btrfs_root *tree_root, root->commit_root = NULL; root->node = read_tree_block(root, btrfs_root_bytenr(&root->root_item), blocksize, generation); - if (!root->node || !btrfs_buffer_uptodate(root->node, generation)) { + if (!root->node || !btrfs_buffer_uptodate(root->node, generation, 0)) { free_extent_buffer(root->node); root->node = NULL; return -EIO; @@ -3143,7 +3148,8 @@ int close_ctree(struct btrfs_root *root) return 0; } -int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid) +int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid, + int atomic) { int ret; struct inode *btree_inode = buf->pages[0]->mapping->host; @@ -3153,7 +3159,9 @@ int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid) return ret; ret = verify_parent_transid(&BTRFS_I(btree_inode)->io_tree, buf, - parent_transid); + parent_transid, atomic); + if (ret == -EAGAIN) + return ret; return !ret; } diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index a7ace1a..ab1830a 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -66,7 +66,8 @@ void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); void __btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr); void btrfs_free_fs_root(struct btrfs_fs_info *fs_info, struct btrfs_root *root); void btrfs_mark_buffer_dirty(struct extent_buffer *buf); -int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid); +int btrfs_buffer_uptodate(struct extent_buffer *buf, u64 parent_transid, + int atomic); int btrfs_set_buffer_uptodate(struct extent_buffer *buf); int btrfs_read_buffer(struct extent_buffer *buf, u64 parent_transid); u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 6fc2e6f..49fd7b6 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -6568,7 +6568,7 @@ static noinline int do_walk_down(struct btrfs_trans_handle *trans, goto skip; } - if (!btrfs_buffer_uptodate(next, generation)) { + if (!btrfs_buffer_uptodate(next, generation, 0)) { btrfs_tree_unlock(next); free_extent_buffer(next); next = NULL; diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index d017283..eb1ae90 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -279,7 +279,7 @@ static int process_one_buffer(struct btrfs_root *log, log->fs_info->extent_root, eb->start, eb->len); - if (btrfs_buffer_uptodate(eb, gen)) { + if (btrfs_buffer_uptodate(eb, gen, 0)) { if (wc->write) btrfs_write_tree_block(eb); if (wc->wait) -- cgit v1.1 From a4fa16353108431e7cfdfc3ecf683bac21b50755 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Thu, 3 May 2012 11:36:39 +0300 Subject: KVM: ensure async PF event wakes up vcpu from halt If vcpu executes hlt instruction while async PF is waiting to be delivered vcpu can block and deliver async PF only after another even wakes it up. This happens because kvm_check_async_pf_completion() will remove completion event from vcpu->async_pf.done before entering kvm_vcpu_block() and this will make kvm_arch_vcpu_runnable() return false. The solution is to make vcpu runnable when processing completion. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 91a5e98..185a2b8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6581,6 +6581,7 @@ void kvm_arch_async_page_present(struct kvm_vcpu *vcpu, kvm_inject_page_fault(vcpu, &fault); } vcpu->arch.apf.halted = false; + vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE; } bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu) -- cgit v1.1 From 62c49cc976af84cb0ffcb5ec07ee88da1a94e222 Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Wed, 2 May 2012 15:04:02 +0300 Subject: KVM: Do not take reference to mm during async #PF It turned to be totally unneeded. The reason the code was introduced is so that KVM can prefault swapped in page, but prefault can fail even if mm is pinned since page table can change anyway. KVM handles this situation correctly though and does not inject spurious page faults. Fixes: "INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected" warning while running LTP inside a KVM guest using the recent -next kernel. Reported-by: Sasha Levin Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kernel/kvm.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index b8ba6e4..e554e5a 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -79,7 +79,6 @@ struct kvm_task_sleep_node { u32 token; int cpu; bool halted; - struct mm_struct *mm; }; static struct kvm_task_sleep_head { @@ -126,9 +125,7 @@ void kvm_async_pf_task_wait(u32 token) n.token = token; n.cpu = smp_processor_id(); - n.mm = current->active_mm; n.halted = idle || preempt_count() > 1; - atomic_inc(&n.mm->mm_count); init_waitqueue_head(&n.wq); hlist_add_head(&n.link, &b->list); spin_unlock(&b->lock); @@ -161,9 +158,6 @@ EXPORT_SYMBOL_GPL(kvm_async_pf_task_wait); static void apf_task_wake_one(struct kvm_task_sleep_node *n) { hlist_del_init(&n->link); - if (!n->mm) - return; - mmdrop(n->mm); if (n->halted) smp_send_reschedule(n->cpu); else if (waitqueue_active(&n->wq)) @@ -207,7 +201,7 @@ again: * async PF was not yet handled. * Add dummy entry for the token. */ - n = kmalloc(sizeof(*n), GFP_ATOMIC); + n = kzalloc(sizeof(*n), GFP_ATOMIC); if (!n) { /* * Allocation failed! Busy wait while other cpu @@ -219,7 +213,6 @@ again: } n->token = token; n->cpu = smp_processor_id(); - n->mm = NULL; init_waitqueue_head(&n->wq); hlist_add_head(&n->link, &b->list); } else -- cgit v1.1 From 24f06716cd5dbfc3d737ec2a24ac58ef76f68dc7 Mon Sep 17 00:00:00 2001 From: Ariel Elior Date: Sun, 6 May 2012 07:05:57 +0000 Subject: bnx2x: bug fix when loading after SAN boot This is a bug fix for an "interface fails to load" issue. The issue occurs when bnx2x driver loads after UNDI driver was previously loaded over the chip. In such a scenario the UNDI driver is loaded and operates in the pre-boot kernel, within its own specific host memory address range. When the pre-boot stage is complete, the real kernel is loaded, in a new and distinct host memory address range. The transition from pre-boot stage to boot is asynchronous from UNDI point of view. A race condition occurs when UNDI driver triggers a DMAE transaction to valid host addresses in the pre-boot stage, when control is diverted to the real kernel. This results in access to illegal addresses by our HW as the addresses which were valid in the preboot stage are no longer considered valid. Specifically, the 'was_error' bit in the pci glue of our device is set. This causes all following pci transactions from chip to host to timeout (in accordance to the pci spec). Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index e077d25..6af3101 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -9122,13 +9122,34 @@ static int __devinit bnx2x_prev_unload_common(struct bnx2x *bp) return bnx2x_prev_mcp_done(bp); } +/* previous driver DMAE transaction may have occurred when pre-boot stage ended + * and boot began, or when kdump kernel was loaded. Either case would invalidate + * the addresses of the transaction, resulting in was-error bit set in the pci + * causing all hw-to-host pcie transactions to timeout. If this happened we want + * to clear the interrupt which detected this from the pglueb and the was done + * bit + */ +static void __devinit bnx2x_prev_interrupted_dmae(struct bnx2x *bp) +{ + u32 val = REG_RD(bp, PGLUE_B_REG_PGLUE_B_INT_STS); + if (val & PGLUE_B_PGLUE_B_INT_STS_REG_WAS_ERROR_ATTN) { + BNX2X_ERR("was error bit was found to be set in pglueb upon startup. Clearing"); + REG_WR(bp, PGLUE_B_REG_WAS_ERROR_PF_7_0_CLR, 1 << BP_FUNC(bp)); + } +} + static int __devinit bnx2x_prev_unload(struct bnx2x *bp) { int time_counter = 10; u32 rc, fw, hw_lock_reg, hw_lock_val; BNX2X_DEV_INFO("Entering Previous Unload Flow\n"); - /* Release previously held locks */ + /* clear hw from errors which may have resulted from an interrupted + * dmae transaction. + */ + bnx2x_prev_interrupted_dmae(bp); + + /* Release previously held locks */ hw_lock_reg = (BP_FUNC(bp) <= 5) ? (MISC_REG_DRIVER_CONTROL_1 + BP_FUNC(bp) * 8) : (MISC_REG_DRIVER_CONTROL_7 + (BP_FUNC(bp) - 6) * 8); -- cgit v1.1 From 6eddcb4c82883451aec3be1240f17793370fa62f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= Date: Thu, 26 Apr 2012 02:35:10 +0000 Subject: cdc_ether: Ignore bogus union descriptor for RNDIS devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Some RNDIS devices include a bogus CDC Union descriptor pointing to non-existing interfaces. The RNDIS code is already prepared to handle devices without a CDC Union descriptor by hardwiring the driver to use interfaces 0 and 1, which is correct for the devices with the bogus descriptor as well. So we can reuse the existing workaround. Cc: Markus Kolb Cc: Iker Salmón San Millán Cc: Jonathan Nieder Cc: Oliver Neukum Cc: 655387@bugs.debian.org Cc: stable@vger.kernel.org Signed-off-by: Bjørn Mork Signed-off-by: David S. Miller --- drivers/net/usb/cdc_ether.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/net/usb/cdc_ether.c b/drivers/net/usb/cdc_ether.c index 90a3002..00880ed 100644 --- a/drivers/net/usb/cdc_ether.c +++ b/drivers/net/usb/cdc_ether.c @@ -83,6 +83,7 @@ int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf) struct cdc_state *info = (void *) &dev->data; int status; int rndis; + bool android_rndis_quirk = false; struct usb_driver *driver = driver_of(intf); struct usb_cdc_mdlm_desc *desc = NULL; struct usb_cdc_mdlm_detail_desc *detail = NULL; @@ -195,6 +196,11 @@ int usbnet_generic_cdc_bind(struct usbnet *dev, struct usb_interface *intf) info->control, info->u->bSlaveInterface0, info->data); + /* fall back to hard-wiring for RNDIS */ + if (rndis) { + android_rndis_quirk = true; + goto next_desc; + } goto bad_desc; } if (info->control != intf) { @@ -271,11 +277,15 @@ next_desc: /* Microsoft ActiveSync based and some regular RNDIS devices lack the * CDC descriptors, so we'll hard-wire the interfaces and not check * for descriptors. + * + * Some Android RNDIS devices have a CDC Union descriptor pointing + * to non-existing interfaces. Ignore that and attempt the same + * hard-wired 0 and 1 interfaces. */ - if (rndis && !info->u) { + if (rndis && (!info->u || android_rndis_quirk)) { info->control = usb_ifnum_to_if(dev->udev, 0); info->data = usb_ifnum_to_if(dev->udev, 1); - if (!info->control || !info->data) { + if (!info->control || !info->data || info->control != intf) { dev_dbg(&intf->dev, "rndis: master #0/%p slave #1/%p\n", info->control, -- cgit v1.1 From ce7e5d2d19bc371e1b67826bfbc79bbcbaa9772f Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 6 May 2012 17:20:00 +0100 Subject: x86: fix broken TASK_SIZE for ia32_aout Setting TIF_IA32 in load_aout_binary() used to be enough; these days TASK_SIZE is controlled by TIF_ADDR32 and that one doesn't get set there. Switch to use of set_personality_ia32()... Signed-off-by: Al Viro Signed-off-by: Linus Torvalds --- arch/x86/ia32/ia32_aout.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c index 4824fb4..07b3a68 100644 --- a/arch/x86/ia32/ia32_aout.c +++ b/arch/x86/ia32/ia32_aout.c @@ -294,8 +294,7 @@ static int load_aout_binary(struct linux_binprm *bprm, struct pt_regs *regs) /* OK, This is the point of no return */ set_personality(PER_LINUX); - set_thread_flag(TIF_IA32); - current->mm->context.ia32_compat = 1; + set_personality_ia32(false); setup_new_exec(bprm); -- cgit v1.1 From d48b97b403d23f6df0b990cee652bdf9a52337a3 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sun, 6 May 2012 15:07:32 -0700 Subject: Linux 3.4-rc6 --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index a06ee9f..9e384ae 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 4 SUBLEVEL = 0 -EXTRAVERSION = -rc5 +EXTRAVERSION = -rc6 NAME = Saber-toothed Squirrel # *DOCUMENTATION* -- cgit v1.1 From febb72a6e4cc6c8cffcc1ea649a3fb364f1ea432 Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Sun, 6 May 2012 19:40:03 -0500 Subject: IA32 emulation: Fix build problem for modular ia32 a.out support Commit ce7e5d2d19bc ("x86: fix broken TASK_SIZE for ia32_aout") breaks kernel builds when "CONFIG_IA32_AOUT=m" with ERROR: "set_personality_ia32" [arch/x86/ia32/ia32_aout.ko] undefined! make[1]: *** [__modpost] Error 1 The entry point needs to be exported. Signed-off-by: Larry Finger Acked-by: Al Viro Signed-off-by: Linus Torvalds --- arch/x86/kernel/process_64.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 733ca39..43d8b48 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -423,6 +423,7 @@ void set_personality_ia32(bool x32) current_thread_info()->status |= TS_COMPAT; } } +EXPORT_SYMBOL_GPL(set_personality_ia32); unsigned long get_wchan(struct task_struct *p) { -- cgit v1.1 From f5c53d898cc34079373c63a290528963db31d681 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 7 May 2012 10:07:33 +0200 Subject: ALSA: hda/realtek - Add a fixup for Acer Aspire 5739G Acer Aspire 5739G requires the same fix-up for 4930G to support the surround / bass speakers. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43180 Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 818f90b..27d0f63 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5405,6 +5405,8 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = { SND_PCI_QUIRK(0x1025, 0x0142, "Acer Aspire 7730G", ALC882_FIXUP_ACER_ASPIRE_4930G), SND_PCI_QUIRK(0x1025, 0x0155, "Packard-Bell M5120", ALC882_FIXUP_PB_M5210), + SND_PCI_QUIRK(0x1025, 0x021e, "Acer Aspire 5739G", + ALC882_FIXUP_ACER_ASPIRE_4930G), SND_PCI_QUIRK(0x1025, 0x0259, "Acer Aspire 5935", ALC889_FIXUP_DAC_ROUTE), SND_PCI_QUIRK(0x1025, 0x026b, "Acer Aspire 8940G", ALC882_FIXUP_ACER_ASPIRE_8930G), SND_PCI_QUIRK(0x1025, 0x0296, "Acer Aspire 7736z", ALC882_FIXUP_ACER_ASPIRE_7736), -- cgit v1.1 From 768b107e4b3be0acf6f58e914afe4f337c00932b Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Fri, 4 May 2012 11:29:56 +0200 Subject: drm/i915: disable sdvo hotplug on i945g/gm MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Chris Wilson dug out a hw erratum saying that there's noise on the interrupt line on i945G chips. We also have a bug report from a i945GM chip with an sdvo hotplug interrupt storm (and no apparent cause). Play it safe and disable sdvo hotplug on all i945 variants. Note that this is a regression that has been introduced in 3.1, when we've enabled sdvo hotplug support with commit cc68c81aed7d892deaf12d720d5455208e94cd0a Author: Simon Farnsworth Date: Wed Sep 21 17:13:30 2011 +0100 drm/i915: Enable SDVO hotplug interrupts for HDMI and DVI Cc: stable@kernel.org Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=38442 Reported-and-tested-by: Dominik Köppl Reviewed-by: Chris Wilson Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_sdvo.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 232d77d..ae5e748 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -1220,8 +1220,14 @@ static bool intel_sdvo_get_capabilities(struct intel_sdvo *intel_sdvo, struct in static int intel_sdvo_supports_hotplug(struct intel_sdvo *intel_sdvo) { + struct drm_device *dev = intel_sdvo->base.base.dev; u8 response[2]; + /* HW Erratum: SDVO Hotplug is broken on all i945G chips, there's noise + * on the line. */ + if (IS_I945G(dev) || IS_I945GM(dev)) + return false; + return intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_HOT_PLUG_SUPPORT, &response, 2) && response[0]; } -- cgit v1.1 From 2e7a44814d802c8ba479164b8924070cd908d6b5 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Sun, 6 May 2012 16:50:24 +0200 Subject: drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+ I've flagged this while reviewing the first version and Ken Graunke fixed it up in v2, but unfortunately Dave Airlie picked up the wrong version. Cc: Dave Airlie Cc: Kenneth Graunke Cc: stable@kernel.org Signed-Off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_ringbuffer.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c index 80fce51..62892a8 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.c +++ b/drivers/gpu/drm/i915/intel_ringbuffer.c @@ -398,10 +398,8 @@ static int init_render_ring(struct intel_ring_buffer *ring) return ret; } - if (INTEL_INFO(dev)->gen >= 6) { - I915_WRITE(INSTPM, - INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + if (IS_GEN6(dev)) { /* From the Sandybridge PRM, volume 1 part 3, page 24: * "If this bit is set, STCunit will have LRA as replacement * policy. [...] This bit must be reset. LRA replacement @@ -411,6 +409,11 @@ static int init_render_ring(struct intel_ring_buffer *ring) CM0_STC_EVICT_DISABLE_LRA_SNB << CM0_MASK_SHIFT); } + if (INTEL_INFO(dev)->gen >= 6) { + I915_WRITE(INSTPM, + INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); + } + return ret; } -- cgit v1.1 From bca40138558f0b39357fd1ca477868e4f52f4b1e Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 7 May 2012 11:13:14 +0200 Subject: ALSA: hda/realtek - Add missing CD-input pin for MSI-7350 mobo Reported-by: Philipp Matthias Hahn Cc: [v3.3+] Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 27d0f63..8ea613e 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5440,6 +5440,7 @@ static const struct snd_pci_quirk alc882_fixup_tbl[] = { SND_PCI_QUIRK(0x106b, 0x4a00, "Macbook 5,2", ALC889_FIXUP_IMAC91_VREF), SND_PCI_QUIRK(0x1071, 0x8258, "Evesham Voyaeger", ALC882_FIXUP_EAPD), + SND_PCI_QUIRK(0x1462, 0x7350, "MSI-7350", ALC889_FIXUP_CD), SND_PCI_QUIRK_VENDOR(0x1462, "MSI", ALC882_FIXUP_GPIO3), SND_PCI_QUIRK(0x1458, 0xa002, "Gigabyte EP45-DS3", ALC889_FIXUP_CD), SND_PCI_QUIRK(0x147b, 0x107a, "Abit AW9D-MAX", ALC882_FIXUP_ABIT_AW9D_MAX), -- cgit v1.1 From ec9b3a9de6b2a8a08c5250b466db92adf82b8d65 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Fri, 4 May 2012 14:38:49 +1000 Subject: drm/nouveau/i2c: resume use of i2c-algo-bit, rather than custom stack Previous issues with i2c-algo-bit have now been resolved. This is a revert of f553b79c03f0dbd52f6f03abe8233a2bef8cbd0d mostly, due to fixes in the i2c core repairing the original issue, this code isn't required and was causing regressions. Signed-off-by: Ben Skeggs Reported-by: Nick Bowler Tested-by: Nick Bowler Signed-off-by: Dave Airlie --- drivers/gpu/drm/nouveau/nouveau_i2c.c | 199 ++++------------------------------ drivers/gpu/drm/nouveau/nouveau_i2c.h | 1 + 2 files changed, 22 insertions(+), 178 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.c b/drivers/gpu/drm/nouveau/nouveau_i2c.c index e2be95a..77e5646 100644 --- a/drivers/gpu/drm/nouveau/nouveau_i2c.c +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.c @@ -29,10 +29,6 @@ #include "nouveau_i2c.h" #include "nouveau_hw.h" -#define T_TIMEOUT 2200000 -#define T_RISEFALL 1000 -#define T_HOLD 5000 - static void i2c_drive_scl(void *data, int state) { @@ -113,175 +109,6 @@ i2c_sense_sda(void *data) return 0; } -static void -i2c_delay(struct nouveau_i2c_chan *port, u32 nsec) -{ - udelay((nsec + 500) / 1000); -} - -static bool -i2c_raise_scl(struct nouveau_i2c_chan *port) -{ - u32 timeout = T_TIMEOUT / T_RISEFALL; - - i2c_drive_scl(port, 1); - do { - i2c_delay(port, T_RISEFALL); - } while (!i2c_sense_scl(port) && --timeout); - - return timeout != 0; -} - -static int -i2c_start(struct nouveau_i2c_chan *port) -{ - int ret = 0; - - port->state = i2c_sense_scl(port); - port->state |= i2c_sense_sda(port) << 1; - if (port->state != 3) { - i2c_drive_scl(port, 0); - i2c_drive_sda(port, 1); - if (!i2c_raise_scl(port)) - ret = -EBUSY; - } - - i2c_drive_sda(port, 0); - i2c_delay(port, T_HOLD); - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return ret; -} - -static void -i2c_stop(struct nouveau_i2c_chan *port) -{ - i2c_drive_scl(port, 0); - i2c_drive_sda(port, 0); - i2c_delay(port, T_RISEFALL); - - i2c_drive_scl(port, 1); - i2c_delay(port, T_HOLD); - i2c_drive_sda(port, 1); - i2c_delay(port, T_HOLD); -} - -static int -i2c_bitw(struct nouveau_i2c_chan *port, int sda) -{ - i2c_drive_sda(port, sda); - i2c_delay(port, T_RISEFALL); - - if (!i2c_raise_scl(port)) - return -ETIMEDOUT; - i2c_delay(port, T_HOLD); - - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return 0; -} - -static int -i2c_bitr(struct nouveau_i2c_chan *port) -{ - int sda; - - i2c_drive_sda(port, 1); - i2c_delay(port, T_RISEFALL); - - if (!i2c_raise_scl(port)) - return -ETIMEDOUT; - i2c_delay(port, T_HOLD); - - sda = i2c_sense_sda(port); - - i2c_drive_scl(port, 0); - i2c_delay(port, T_HOLD); - return sda; -} - -static int -i2c_get_byte(struct nouveau_i2c_chan *port, u8 *byte, bool last) -{ - int i, bit; - - *byte = 0; - for (i = 7; i >= 0; i--) { - bit = i2c_bitr(port); - if (bit < 0) - return bit; - *byte |= bit << i; - } - - return i2c_bitw(port, last ? 1 : 0); -} - -static int -i2c_put_byte(struct nouveau_i2c_chan *port, u8 byte) -{ - int i, ret; - for (i = 7; i >= 0; i--) { - ret = i2c_bitw(port, !!(byte & (1 << i))); - if (ret < 0) - return ret; - } - - ret = i2c_bitr(port); - if (ret == 1) /* nack */ - ret = -EIO; - return ret; -} - -static int -i2c_addr(struct nouveau_i2c_chan *port, struct i2c_msg *msg) -{ - u32 addr = msg->addr << 1; - if (msg->flags & I2C_M_RD) - addr |= 1; - return i2c_put_byte(port, addr); -} - -static int -i2c_bit_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) -{ - struct nouveau_i2c_chan *port = (struct nouveau_i2c_chan *)adap; - struct i2c_msg *msg = msgs; - int ret = 0, mcnt = num; - - while (!ret && mcnt--) { - u8 remaining = msg->len; - u8 *ptr = msg->buf; - - ret = i2c_start(port); - if (ret == 0) - ret = i2c_addr(port, msg); - - if (msg->flags & I2C_M_RD) { - while (!ret && remaining--) - ret = i2c_get_byte(port, ptr++, !remaining); - } else { - while (!ret && remaining--) - ret = i2c_put_byte(port, *ptr++); - } - - msg++; - } - - i2c_stop(port); - return (ret < 0) ? ret : num; -} - -static u32 -i2c_bit_func(struct i2c_adapter *adap) -{ - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; -} - -const struct i2c_algorithm nouveau_i2c_bit_algo = { - .master_xfer = i2c_bit_xfer, - .functionality = i2c_bit_func -}; - static const uint32_t nv50_i2c_port[] = { 0x00e138, 0x00e150, 0x00e168, 0x00e180, 0x00e254, 0x00e274, 0x00e764, 0x00e780, @@ -384,12 +211,10 @@ nouveau_i2c_init(struct drm_device *dev) case 0: /* NV04:NV50 */ port->drive = entry[0]; port->sense = entry[1]; - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 4: /* NV4E */ port->drive = 0x600800 + entry[1]; port->sense = port->drive; - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 5: /* NV50- */ port->drive = entry[0] & 0x0f; @@ -402,7 +227,6 @@ nouveau_i2c_init(struct drm_device *dev) port->drive = 0x00d014 + (port->drive * 0x20); port->sense = port->drive; } - port->adapter.algo = &nouveau_i2c_bit_algo; break; case 6: /* NV50- DP AUX */ port->drive = entry[0]; @@ -413,7 +237,7 @@ nouveau_i2c_init(struct drm_device *dev) break; } - if (!port->adapter.algo) { + if (!port->adapter.algo && !port->drive) { NV_ERROR(dev, "I2C%d: type %d index %x/%x unknown\n", i, port->type, port->drive, port->sense); kfree(port); @@ -429,7 +253,26 @@ nouveau_i2c_init(struct drm_device *dev) port->dcb = ROM32(entry[0]); i2c_set_adapdata(&port->adapter, i2c); - ret = i2c_add_adapter(&port->adapter); + if (port->adapter.algo != &nouveau_dp_i2c_algo) { + port->adapter.algo_data = &port->bit; + port->bit.udelay = 10; + port->bit.timeout = usecs_to_jiffies(2200); + port->bit.data = port; + port->bit.setsda = i2c_drive_sda; + port->bit.setscl = i2c_drive_scl; + port->bit.getsda = i2c_sense_sda; + port->bit.getscl = i2c_sense_scl; + + i2c_drive_scl(port, 0); + i2c_drive_sda(port, 1); + i2c_drive_scl(port, 1); + + ret = i2c_bit_add_bus(&port->adapter); + } else { + port->adapter.algo = &nouveau_dp_i2c_algo; + ret = i2c_add_adapter(&port->adapter); + } + if (ret) { NV_ERROR(dev, "I2C%d: failed register: %d\n", i, ret); kfree(port); diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.h b/drivers/gpu/drm/nouveau/nouveau_i2c.h index 4d2e4e9..1d08389 100644 --- a/drivers/gpu/drm/nouveau/nouveau_i2c.h +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.h @@ -34,6 +34,7 @@ struct nouveau_i2c_chan { struct i2c_adapter adapter; struct drm_device *dev; + struct i2c_algo_bit_data bit; struct list_head head; u8 index; u8 type; -- cgit v1.1 From a7a97c639478941102e33dcdd0ff6d4b70539533 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 22 Apr 2012 11:57:40 +0200 Subject: drivers/video/xen-fbfront.c: add missing cleanup code The operations in the subsequent error-handling code appear to be also useful here. Acked-by: Florian Tobias Schandinat Signed-off-by: Julia Lawall [v1: Collapse some of the error handling functions] [v2: Fix compile warning] Signed-off-by: Konrad Rzeszutek Wilk --- drivers/video/xen-fbfront.c | 27 ++++++++++++++++----------- 1 file changed, 16 insertions(+), 11 deletions(-) diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c index cb4529c..b7f5173 100644 --- a/drivers/video/xen-fbfront.c +++ b/drivers/video/xen-fbfront.c @@ -365,7 +365,7 @@ static int __devinit xenfb_probe(struct xenbus_device *dev, struct fb_info *fb_info; int fb_size; int val; - int ret; + int ret = 0; info = kzalloc(sizeof(*info), GFP_KERNEL); if (info == NULL) { @@ -458,26 +458,31 @@ static int __devinit xenfb_probe(struct xenbus_device *dev, xenfb_init_shared_page(info, fb_info); ret = xenfb_connect_backend(dev, info); - if (ret < 0) - goto error; + if (ret < 0) { + xenbus_dev_fatal(dev, ret, "xenfb_connect_backend"); + goto error_fb; + } ret = register_framebuffer(fb_info); if (ret) { - fb_deferred_io_cleanup(fb_info); - fb_dealloc_cmap(&fb_info->cmap); - framebuffer_release(fb_info); xenbus_dev_fatal(dev, ret, "register_framebuffer"); - goto error; + goto error_fb; } info->fb_info = fb_info; xenfb_make_preferred_console(); return 0; - error_nomem: - ret = -ENOMEM; - xenbus_dev_fatal(dev, ret, "allocating device memory"); - error: +error_fb: + fb_deferred_io_cleanup(fb_info); + fb_dealloc_cmap(&fb_info->cmap); + framebuffer_release(fb_info); +error_nomem: + if (!ret) { + ret = -ENOMEM; + xenbus_dev_fatal(dev, ret, "allocating device memory"); + } +error: xenfb_remove(dev); return ret; } -- cgit v1.1 From 968c2c1707a3396ccd6e7e6c5ddaf658a6d3bd66 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Mon, 7 May 2012 11:34:52 +0100 Subject: regulator: Actually free the regulator in devm_regulator_put() It turns out that (quite surprisingly) devres_destroy() only undoes the devres mapping, it doesn't destroy the underlying resource, meaning that anything using devm_regulator_put() would leak. While we wait for the new devres_release() which does what we want to get merged open code it in devm_regulator_put(). Signed-off-by: Mark Brown Acked-by: Liam Girdwood --- drivers/regulator/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index e70dd38..046fb1b 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1431,7 +1431,10 @@ void devm_regulator_put(struct regulator *regulator) rc = devres_destroy(regulator->dev, devm_regulator_release, devm_regulator_match, regulator); - WARN_ON(rc); + if (rc == 0) + regulator_put(regulator); + else + WARN_ON(rc); } EXPORT_SYMBOL_GPL(devm_regulator_put); -- cgit v1.1 From 558daa289a402dbcce0c065c6ff3cc2e00ffeac8 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Wed, 2 May 2012 15:04:51 -0400 Subject: xen/apic: Return the APIC ID (and version) for CPU 0. On x86_64 on AMD machines where the first APIC_ID is not zero, we get: ACPI: LAPIC (acpi_id[0x01] lapic_id[0x10] enabled) BIOS bug: APIC version is 0 for CPU 1/0x10, fixing up to 0x10 BIOS bug: APIC version mismatch, boot CPU: 0, CPU 1: version 10 which means that when the ACPI processor driver loads and tries to parse the _Pxx states it fails to do as, as it ends up calling acpi_get_cpuid which does this: for_each_possible_cpu(i) { if (cpu_physical_id(i) == apic_id) return i; } And the bootup CPU, has not been found so it fails and returns -1 for the first CPU - which then subsequently in the loop that "acpi_processor_get_info" does results in returning an error, which means that "acpi_processor_add" failing and per_cpu(processor) is never set (and is NULL). That means that when xen-acpi-processor tries to load (much much later on) and parse the P-states it gets -ENODEV from acpi_processor_register_performance() (which tries to read the per_cpu(processor)) and fails to parse the data. Reported-by-and-Tested-by: Stefan Bader Suggested-by: Boris Ostrovsky [v2: Bit-shift APIC ID by 24 bits] Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/enlighten.c | 35 ++++++++++++++++++++++++++++++++++- 1 file changed, 34 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index a8f8844..4f437de 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -809,9 +809,40 @@ static void xen_io_delay(void) } #ifdef CONFIG_X86_LOCAL_APIC +static unsigned long xen_set_apic_id(unsigned int x) +{ + WARN_ON(1); + return x; +} +static unsigned int xen_get_apic_id(unsigned long x) +{ + return ((x)>>24) & 0xFFu; +} static u32 xen_apic_read(u32 reg) { - return 0; + struct xen_platform_op op = { + .cmd = XENPF_get_cpuinfo, + .interface_version = XENPF_INTERFACE_VERSION, + .u.pcpu_info.xen_cpuid = 0, + }; + int ret = 0; + + /* Shouldn't need this as APIC is turned off for PV, and we only + * get called on the bootup processor. But just in case. */ + if (!xen_initial_domain() || smp_processor_id()) + return 0; + + if (reg == APIC_LVR) + return 0x10; + + if (reg != APIC_ID) + return 0; + + ret = HYPERVISOR_dom0_op(&op); + if (ret) + return 0; + + return op.u.pcpu_info.apic_id << 24; } static void xen_apic_write(u32 reg, u32 val) @@ -849,6 +880,8 @@ static void set_xen_basic_apic_ops(void) apic->icr_write = xen_apic_icr_write; apic->wait_icr_idle = xen_apic_wait_icr_idle; apic->safe_wait_icr_idle = xen_safe_apic_wait_icr_idle; + apic->set_apic_id = xen_set_apic_id; + apic->get_apic_id = xen_get_apic_id; } #endif -- cgit v1.1 From b7e5ffe5d83fa40d702976d77452004abbe35791 Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Thu, 3 May 2012 16:14:14 -0400 Subject: xen/pte: Fix crashes when trying to see non-existent PGD/PMD/PUD/PTEs If I try to do "cat /sys/kernel/debug/kernel_page_tables" I end up with: BUG: unable to handle kernel paging request at ffffc7fffffff000 IP: [] ptdump_show+0x221/0x480 PGD 0 Oops: 0000 [#1] SMP CPU 0 .. snip.. RAX: 0000000000000000 RBX: ffffc00000000fff RCX: 0000000000000000 RDX: 0000800000000000 RSI: 0000000000000000 RDI: ffffc7fffffff000 which is due to the fact we are trying to access a PFN that is not accessible to us. The reason (at least in this case) was that PGD[256] is set to __HYPERVISOR_VIRT_START which was setup (by the hypervisor) to point to a read-only linear map of the MFN->PFN array. During our parsing we would get the MFN (a valid one), try to look it up in the MFN->PFN tree and find it invalid and return ~0 as PFN. Then pte_mfn_to_pfn would happilly feed that in, attach the flags and return it back to the caller. 'ptdump_show' bitshifts it and gets and invalid value that it tries to dereference. Instead of doing all of that, we detect the ~0 case and just return !_PAGE_PRESENT. This bug has been in existence .. at least until 2.6.37 (yikes!) CC: stable@kernel.org Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/mmu.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c index b8e2794..69f5857 100644 --- a/arch/x86/xen/mmu.c +++ b/arch/x86/xen/mmu.c @@ -353,8 +353,13 @@ static pteval_t pte_mfn_to_pfn(pteval_t val) { if (val & _PAGE_PRESENT) { unsigned long mfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT; + unsigned long pfn = mfn_to_pfn(mfn); + pteval_t flags = val & PTE_FLAGS_MASK; - val = ((pteval_t)mfn_to_pfn(mfn) << PAGE_SHIFT) | flags; + if (unlikely(pfn == ~0)) + val = flags & ~_PAGE_PRESENT; + else + val = ((pteval_t)pfn << PAGE_SHIFT) | flags; } return val; -- cgit v1.1 From 76a8df7b49168509df02461f83fab117a4a86e08 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Fri, 4 May 2012 14:29:46 +0100 Subject: xen/pci: don't use PCI BIOS service for configuration space accesses The accessing PCI configuration space with the PCI BIOS32 service does not work in PV guests. On systems without MMCONFIG or where the BIOS hasn't marked the MMCONFIG region as reserved in the e820 map, the BIOS service is probed (even though direct access is preferred) and this hangs. CC: stable@kernel.org Acked-by: Jan Beulich Signed-off-by: David Vrabel [v1: Fixed compile error when CONFIG_PCI is not set] Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/xen/enlighten.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 4f437de..95dccce 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -63,6 +63,7 @@ #include #include #include +#include #ifdef CONFIG_ACPI #include @@ -1398,8 +1399,10 @@ asmlinkage void __init xen_start_kernel(void) /* Make sure ACS will be enabled */ pci_request_acs(); } - - +#ifdef CONFIG_PCI + /* PCI BIOS service won't work from a PV guest. */ + pci_probe &= ~PCI_PROBE_BIOS; +#endif xen_raw_console_write("about to get started...\n"); xen_setup_runstate_info(0); -- cgit v1.1 From 1fd14432294a86d46db55d8e96f5a26e97592c95 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Fri, 4 May 2012 14:04:12 -0700 Subject: xen/Kconfig: fix Kconfig layout Fit it into 80 columns so that it is readable in menuconfig. Signed-off-by: Andrew Morton Signed-off-by: Konrad Rzeszutek Wilk --- drivers/xen/Kconfig | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 9424313..ea20c51 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -183,15 +183,17 @@ config XEN_ACPI_PROCESSOR depends on XEN && X86 && ACPI_PROCESSOR && CPU_FREQ default m help - This ACPI processor uploads Power Management information to the Xen hypervisor. - - To do that the driver parses the Power Management data and uploads said - information to the Xen hypervisor. Then the Xen hypervisor can select the - proper Cx and Pxx states. It also registers itslef as the SMM so that - other drivers (such as ACPI cpufreq scaling driver) will not load. - - To compile this driver as a module, choose M here: the - module will be called xen_acpi_processor If you do not know what to choose, - select M here. If the CPUFREQ drivers are built in, select Y here. + This ACPI processor uploads Power Management information to the Xen + hypervisor. + + To do that the driver parses the Power Management data and uploads + said information to the Xen hypervisor. Then the Xen hypervisor can + select the proper Cx and Pxx states. It also registers itslef as the + SMM so that other drivers (such as ACPI cpufreq scaling driver) will + not load. + + To compile this driver as a module, choose M here: the module will be + called xen_acpi_processor If you do not know what to choose, select + M here. If the CPUFREQ drivers are built in, select Y here. endmenu -- cgit v1.1 From 1c430a727fa512500a422ffe4712166c550ea06a Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 7 May 2012 15:39:06 +0200 Subject: net: compare_ether_addr[_64bits]() has no ordering Neither compare_ether_addr() nor compare_ether_addr_64bits() (as it can fall back to the former) have comparison semantics like memcmp() where the sign of the return value indicates sort order. We had a bug in the wireless code due to a blind memcmp replacement because of this. A cursory look suggests that the wireless bug was the only one due to this semantic difference. Signed-off-by: Johannes Berg Signed-off-by: David S. Miller --- include/linux/etherdevice.h | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h index 8a18358..fe5136d 100644 --- a/include/linux/etherdevice.h +++ b/include/linux/etherdevice.h @@ -159,7 +159,8 @@ static inline void eth_hw_addr_random(struct net_device *dev) * @addr1: Pointer to a six-byte array containing the Ethernet address * @addr2: Pointer other six-byte array containing the Ethernet address * - * Compare two ethernet addresses, returns 0 if equal + * Compare two ethernet addresses, returns 0 if equal, non-zero otherwise. + * Unlike memcmp(), it doesn't return a value suitable for sorting. */ static inline unsigned compare_ether_addr(const u8 *addr1, const u8 *addr2) { @@ -184,10 +185,10 @@ static inline unsigned long zap_last_2bytes(unsigned long value) * @addr1: Pointer to an array of 8 bytes * @addr2: Pointer to an other array of 8 bytes * - * Compare two ethernet addresses, returns 0 if equal. - * Same result than "memcmp(addr1, addr2, ETH_ALEN)" but without conditional - * branches, and possibly long word memory accesses on CPU allowing cheap - * unaligned memory reads. + * Compare two ethernet addresses, returns 0 if equal, non-zero otherwise. + * Unlike memcmp(), it doesn't return a value suitable for sorting. + * The function doesn't need any conditional branches and possibly uses + * word memory accesses on CPU allowing cheap unaligned memory reads. * arrays = { byte1, byte2, byte3, byte4, byte6, byte7, pad1, pad2} * * Please note that alignment of addr1 & addr2 is only guaranted to be 16 bits. -- cgit v1.1 From 072ae6314a191e3a9fc309b1e4e539ac7abc48ad Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Mon, 7 May 2012 17:21:53 -0700 Subject: openvswitch: Validation of IPv6 set port action uses IPv4 header When the kernel validates set TCP/UDP port actions, it looks at the ports in the existing flow to make sure that the L4 header exists. However, these actions always use the IPv4 version of the struct. Following patch fixes this by checking for flow ip protocol first. Signed-off-by: Pravin B Shelar Signed-off-by: Jesse Gross --- net/openvswitch/datapath.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c index 4cb615d..777716b 100644 --- a/net/openvswitch/datapath.c +++ b/net/openvswitch/datapath.c @@ -421,6 +421,19 @@ static int validate_sample(const struct nlattr *attr, return validate_actions(actions, key, depth + 1); } +static int validate_tp_port(const struct sw_flow_key *flow_key) +{ + if (flow_key->eth.type == htons(ETH_P_IP)) { + if (flow_key->ipv4.tp.src && flow_key->ipv4.tp.dst) + return 0; + } else if (flow_key->eth.type == htons(ETH_P_IPV6)) { + if (flow_key->ipv6.tp.src && flow_key->ipv6.tp.dst) + return 0; + } + + return -EINVAL; +} + static int validate_set(const struct nlattr *a, const struct sw_flow_key *flow_key) { @@ -462,18 +475,13 @@ static int validate_set(const struct nlattr *a, if (flow_key->ip.proto != IPPROTO_TCP) return -EINVAL; - if (!flow_key->ipv4.tp.src || !flow_key->ipv4.tp.dst) - return -EINVAL; - - break; + return validate_tp_port(flow_key); case OVS_KEY_ATTR_UDP: if (flow_key->ip.proto != IPPROTO_UDP) return -EINVAL; - if (!flow_key->ipv4.tp.src || !flow_key->ipv4.tp.dst) - return -EINVAL; - break; + return validate_tp_port(flow_key); default: return -EINVAL; -- cgit v1.1 From 83ca60094e5e907b8b43c60b4c29b1119604cbb8 Mon Sep 17 00:00:00 2001 From: Steven King Date: Sun, 6 May 2012 12:22:53 -0700 Subject: m68knommu: enable qspi support when SPI_COLDFIRE_QSPI = m Enable Coldfire QSPI support when SPI_COLDFIRE_QSPI is built as a module. This version of the patch combines changes to the config files and device.c and uses IF_ENABLED (thanks to Sam Ravnborg for the suggestion). Signed-off-by: Steven King Signed-off-by: Greg Ungerer --- arch/m68k/platform/520x/config.c | 6 +++--- arch/m68k/platform/523x/config.c | 6 +++--- arch/m68k/platform/5249/config.c | 6 +++--- arch/m68k/platform/527x/config.c | 6 +++--- arch/m68k/platform/528x/config.c | 6 +++--- arch/m68k/platform/532x/config.c | 6 +++--- arch/m68k/platform/coldfire/device.c | 6 +++--- 7 files changed, 21 insertions(+), 21 deletions(-) diff --git a/arch/m68k/platform/520x/config.c b/arch/m68k/platform/520x/config.c index 23594784..09df4b8 100644 --- a/arch/m68k/platform/520x/config.c +++ b/arch/m68k/platform/520x/config.c @@ -22,7 +22,7 @@ /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m520x_qspi_init(void) { @@ -35,7 +35,7 @@ static void __init m520x_qspi_init(void) writew(par, MCF_GPIO_PAR_UART); } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -79,7 +79,7 @@ void __init config_BSP(char *commandp, int size) mach_sched_init = hw_timer_init; m520x_uarts_init(); m520x_fec_init(); -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m520x_qspi_init(); #endif } diff --git a/arch/m68k/platform/523x/config.c b/arch/m68k/platform/523x/config.c index c8b405d..d47dfd8 100644 --- a/arch/m68k/platform/523x/config.c +++ b/arch/m68k/platform/523x/config.c @@ -22,7 +22,7 @@ /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m523x_qspi_init(void) { @@ -36,7 +36,7 @@ static void __init m523x_qspi_init(void) writew(par, MCFGPIO_PAR_TIMER); } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -58,7 +58,7 @@ void __init config_BSP(char *commandp, int size) { mach_sched_init = hw_timer_init; m523x_fec_init(); -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m523x_qspi_init(); #endif } diff --git a/arch/m68k/platform/5249/config.c b/arch/m68k/platform/5249/config.c index bbf0513..300e729 100644 --- a/arch/m68k/platform/5249/config.c +++ b/arch/m68k/platform/5249/config.c @@ -51,7 +51,7 @@ static struct platform_device *m5249_devices[] __initdata = { /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m5249_qspi_init(void) { @@ -61,7 +61,7 @@ static void __init m5249_qspi_init(void) mcf_mapirq2imr(MCF_IRQ_QSPI, MCFINTC_QSPI); } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -90,7 +90,7 @@ void __init config_BSP(char *commandp, int size) #ifdef CONFIG_M5249C3 m5249_smc91x_init(); #endif -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m5249_qspi_init(); #endif } diff --git a/arch/m68k/platform/527x/config.c b/arch/m68k/platform/527x/config.c index f91a532..b3cb378 100644 --- a/arch/m68k/platform/527x/config.c +++ b/arch/m68k/platform/527x/config.c @@ -23,7 +23,7 @@ /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m527x_qspi_init(void) { @@ -42,7 +42,7 @@ static void __init m527x_qspi_init(void) #endif } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -90,7 +90,7 @@ void __init config_BSP(char *commandp, int size) mach_sched_init = hw_timer_init; m527x_uarts_init(); m527x_fec_init(); -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m527x_qspi_init(); #endif } diff --git a/arch/m68k/platform/528x/config.c b/arch/m68k/platform/528x/config.c index d449292..c5f11ba 100644 --- a/arch/m68k/platform/528x/config.c +++ b/arch/m68k/platform/528x/config.c @@ -24,7 +24,7 @@ /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m528x_qspi_init(void) { @@ -32,7 +32,7 @@ static void __init m528x_qspi_init(void) __raw_writeb(0x07, MCFGPIO_PQSPAR); } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -98,7 +98,7 @@ void __init config_BSP(char *commandp, int size) mach_sched_init = hw_timer_init; m528x_uarts_init(); m528x_fec_init(); -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m528x_qspi_init(); #endif } diff --git a/arch/m68k/platform/532x/config.c b/arch/m68k/platform/532x/config.c index 2bec347..37082d0 100644 --- a/arch/m68k/platform/532x/config.c +++ b/arch/m68k/platform/532x/config.c @@ -30,7 +30,7 @@ /***************************************************************************/ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) static void __init m532x_qspi_init(void) { @@ -38,7 +38,7 @@ static void __init m532x_qspi_init(void) writew(0x01f0, MCF_GPIO_PAR_QSPI); } -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ /***************************************************************************/ @@ -77,7 +77,7 @@ void __init config_BSP(char *commandp, int size) mach_sched_init = hw_timer_init; m532x_uarts_init(); m532x_fec_init(); -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) m532x_qspi_init(); #endif diff --git a/arch/m68k/platform/coldfire/device.c b/arch/m68k/platform/coldfire/device.c index 7af9736..3aa77dd 100644 --- a/arch/m68k/platform/coldfire/device.c +++ b/arch/m68k/platform/coldfire/device.c @@ -121,7 +121,7 @@ static struct platform_device mcf_fec1 = { #endif /* MCFFEC_BASE1 */ #endif /* CONFIG_FEC */ -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) /* * The ColdFire QSPI module is an SPI protocol hardware block used * on a number of different ColdFire CPUs. @@ -274,7 +274,7 @@ static struct platform_device mcf_qspi = { .resource = mcf_qspi_resources, .dev.platform_data = &mcf_qspi_data, }; -#endif /* CONFIG_SPI_COLDFIRE_QSPI */ +#endif /* IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) */ static struct platform_device *mcf_devices[] __initdata = { &mcf_uart, @@ -284,7 +284,7 @@ static struct platform_device *mcf_devices[] __initdata = { &mcf_fec1, #endif #endif -#ifdef CONFIG_SPI_COLDFIRE_QSPI +#if IS_ENABLED(CONFIG_SPI_COLDFIRE_QSPI) &mcf_qspi, #endif }; -- cgit v1.1 From 42eb92380f73f28e3a5a51973af1183fdbac82f2 Mon Sep 17 00:00:00 2001 From: Andre Schramm Date: Mon, 7 May 2012 18:52:51 +0200 Subject: ALSA: hdsp - Provide ioctl_compat snd_hdsp uses its own ioctls to acquire config- and status information. Expose the corresponding ioctl handler via ioctl_compat, so that 32bit applications can use it on 64bit kernels. Signed-off-by: Andre Schramm Reviewed-by: Adrian Knoth Signed-off-by: Adrian Knoth Signed-off-by: Takashi Iwai --- sound/pci/rme9652/hdsp.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c index b68cdec..0b2aea2 100644 --- a/sound/pci/rme9652/hdsp.c +++ b/sound/pci/rme9652/hdsp.c @@ -5170,6 +5170,7 @@ static int snd_hdsp_create_hwdep(struct snd_card *card, struct hdsp *hdsp) strcpy(hw->name, "HDSP hwdep interface"); hw->ops.ioctl = snd_hdsp_hwdep_ioctl; + hw->ops.ioctl_compat = snd_hdsp_hwdep_ioctl; return 0; } -- cgit v1.1 From af741c150f66db8d1da6f82ac75e2571f7f1dd38 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Mon, 7 May 2012 18:09:48 +0200 Subject: ALSA: hda/realtek - Call alc_auto_parse_customize_define() always after fixup The call for alc_auto_parse_customize_define() must be done after the fixup pre-probe initialization. Otherwise SKU_IGNORE fixup won't work properly (e.g. HP RP5800 with ALC662 codec). Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 8ea613e..7810913 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -5641,13 +5641,13 @@ static int patch_alc262(struct hda_codec *codec) snd_hda_codec_write(codec, 0x1a, 0, AC_VERB_SET_PROC_COEF, tmp | 0x80); } #endif - alc_auto_parse_customize_define(codec); - alc_fix_pll_init(codec, 0x20, 0x0a, 10); alc_pick_fixup(codec, NULL, alc262_fixup_tbl, alc262_fixups); alc_apply_fixup(codec, ALC_FIXUP_ACT_PRE_PROBE); + alc_auto_parse_customize_define(codec); + /* automatic parse from the BIOS config */ err = alc262_parse_auto_config(codec); if (err < 0) @@ -6252,8 +6252,6 @@ static int patch_alc269(struct hda_codec *codec) spec->mixer_nid = 0x0b; - alc_auto_parse_customize_define(codec); - err = alc_codec_rename_from_preset(codec); if (err < 0) goto error; @@ -6286,6 +6284,8 @@ static int patch_alc269(struct hda_codec *codec) alc269_fixup_tbl, alc269_fixups); alc_apply_fixup(codec, ALC_FIXUP_ACT_PRE_PROBE); + alc_auto_parse_customize_define(codec); + /* automatic parse from the BIOS config */ err = alc269_parse_auto_config(codec); if (err < 0) @@ -6862,8 +6862,6 @@ static int patch_alc662(struct hda_codec *codec) /* handle multiple HPs as is */ spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP; - alc_auto_parse_customize_define(codec); - alc_fix_pll_init(codec, 0x20, 0x04, 15); err = alc_codec_rename_from_preset(codec); @@ -6880,6 +6878,9 @@ static int patch_alc662(struct hda_codec *codec) alc_pick_fixup(codec, alc662_fixup_models, alc662_fixup_tbl, alc662_fixups); alc_apply_fixup(codec, ALC_FIXUP_ACT_PRE_PROBE); + + alc_auto_parse_customize_define(codec); + /* automatic parse from the BIOS config */ err = alc662_parse_auto_config(codec); if (err < 0) -- cgit v1.1 From 619a341b78f17fb86d92e89c04612676cd05e26f Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 8 May 2012 16:30:59 +0200 Subject: Revert "ALSA: hda - Set codec to D3 forcibly even if not used" This reverts commit 785f857d1cb0856b612b46a0545b74aa2596e44a. The commit causes a problem with the wrong D3 state after suspend because the call of hda_set_power_state() involves with the power-up sequence, which changes the power_count, and this confuses the resume sequence that checks the power_count as well. Originally, this go-to-D3 sequence should be a simple task without the power-up sequence. But, it'd need some proper sanity checks in the case of power-saved state, so it's not too easy to write now in the 3.4-rc cycle. In short, the safest option now is to revert this affecting commit. Of course, we need to clean up and robustify the power-saving code better for 3.5 kernel. Reported-by: Konstantin Khlebnikov Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_codec.c | 4 ---- sound/pci/hda/hda_intel.c | 14 +++++++++++++- 2 files changed, 13 insertions(+), 5 deletions(-) diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 7a8fcc4..841475c 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -5444,10 +5444,6 @@ int snd_hda_suspend(struct hda_bus *bus) list_for_each_entry(codec, &bus->codec_list, list) { if (hda_codec_is_power_on(codec)) hda_call_codec_suspend(codec); - else /* forcibly change the power to D3 even if not used */ - hda_set_power_state(codec, - codec->afg ? codec->afg : codec->mfg, - AC_PWRST_D3); if (codec->patch_ops.post_suspend) codec->patch_ops.post_suspend(codec); } diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index c19e71a..6e958bf 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2351,6 +2351,17 @@ static void azx_power_notify(struct hda_bus *bus) * power management */ +static int snd_hda_codecs_inuse(struct hda_bus *bus) +{ + struct hda_codec *codec; + + list_for_each_entry(codec, &bus->codec_list, list) { + if (snd_hda_codec_needs_resume(codec)) + return 1; + } + return 0; +} + static int azx_suspend(struct pci_dev *pci, pm_message_t state) { struct snd_card *card = pci_get_drvdata(pci); @@ -2397,7 +2408,8 @@ static int azx_resume(struct pci_dev *pci) return -EIO; azx_init_pci(chip); - azx_init_chip(chip, 1); + if (snd_hda_codecs_inuse(chip->bus)) + azx_init_chip(chip, 1); snd_hda_resume(chip->bus); snd_power_change_state(card, SNDRV_CTL_POWER_D0); -- cgit v1.1 From de6c0b02d4d7bdf2587e679a6ddbb71b7d68bb89 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Tue, 8 May 2012 20:24:08 +1000 Subject: KVM: PPC: Book3S HV: Fix refcounting of hugepages The H_REGISTER_VPA hcall implementation in HV Power KVM needs to pin some guest memory pages into host memory so that they can be safely accessed from usermode. It does this used get_user_pages_fast(). When the VPA is unregistered, or the VCPUs are cleaned up, these pages are released using put_page(). However, the get_user_pages() is invoked on the specific memory are of the VPA which could lie within hugepages. In case the pinned page is huge, we explicitly find the head page of the compound page before calling put_page() on it. At least with the latest kernel, this is not correct. put_page() already handles finding the correct head page of a compound, and also deals with various counts on the individual tail page which are important for transparent huge pages. We don't support transparent hugepages on Power, but even so, bypassing this count maintenance can lead (when the VM ends) to a hugepage being released back to the pool with a non-zero mapcount on one of the tail pages. This can then lead to a bad_page() when the page is released from the hugepage pool. This removes the explicit compound_head() call to correct this bug. Signed-off-by: David Gibson Signed-off-by: Paul Mackerras Acked-by: Alexander Graf Signed-off-by: Avi Kivity --- arch/powerpc/kvm/book3s_64_mmu_hv.c | 22 +++++++++++++--------- arch/powerpc/kvm/book3s_hv.c | 2 -- 2 files changed, 13 insertions(+), 11 deletions(-) diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index ddc485a..c3beaee 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -258,6 +258,8 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn, !(memslot->userspace_addr & (s - 1))) { start &= ~(s - 1); pgsize = s; + get_page(hpage); + put_page(page); page = hpage; } } @@ -281,11 +283,8 @@ static long kvmppc_get_guest_page(struct kvm *kvm, unsigned long gfn, err = 0; out: - if (got) { - if (PageHuge(page)) - page = compound_head(page); + if (got) put_page(page); - } return err; up_err: @@ -678,8 +677,15 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, SetPageDirty(page); out_put: - if (page) - put_page(page); + if (page) { + /* + * We drop pages[0] here, not page because page might + * have been set to the head page of a compound, but + * we have to drop the reference on the correct tail + * page to match the get inside gup() + */ + put_page(pages[0]); + } return ret; out_unlock: @@ -979,6 +985,7 @@ void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long gpa, pa = *physp; } page = pfn_to_page(pa >> PAGE_SHIFT); + get_page(page); } else { hva = gfn_to_hva_memslot(memslot, gfn); npages = get_user_pages_fast(hva, 1, 1, pages); @@ -991,8 +998,6 @@ void *kvmppc_pin_guest_page(struct kvm *kvm, unsigned long gpa, page = compound_head(page); psize <<= compound_order(page); } - if (!kvm->arch.using_mmu_notifiers) - get_page(page); offset = gpa & (psize - 1); if (nb_ret) *nb_ret = psize - offset; @@ -1003,7 +1008,6 @@ void kvmppc_unpin_guest_page(struct kvm *kvm, void *va) { struct page *page = virt_to_page(va); - page = compound_head(page); put_page(page); } diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 01294a5..108d1f5 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -1192,8 +1192,6 @@ static void unpin_slot(struct kvm *kvm, int slot_id) continue; pfn = physp[j] >> PAGE_SHIFT; page = pfn_to_page(pfn); - if (PageHuge(page)) - page = compound_head(page); SetPageDirty(page); put_page(page); } -- cgit v1.1 From d5e28005a1d2e67833852f4c9ea8ec206ea3ff85 Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 27 Apr 2012 10:54:35 -0700 Subject: percpu, x86: don't use PMD_SIZE as embedded atom_size on 32bit With the embed percpu first chunk allocator, x86 uses either PAGE_SIZE or PMD_SIZE for atom_size. PMD_SIZE is used when CPU supports PSE so that percpu areas are aligned to PMD mappings and possibly allow using PMD mappings in vmalloc areas in the future. Using larger atom_size doesn't waste actual memory; however, it does require larger vmalloc space allocation later on for !first chunks. With reasonably sized vmalloc area, PMD_SIZE shouldn't be a problem but x86_32 at this point is anything but reasonable in terms of address space and using larger atom_size reportedly leads to frequent percpu allocation failures on certain setups. As there is no reason to not use PMD_SIZE on x86_64 as vmalloc space is aplenty and most x86_64 configurations support PSE, fix the issue by always using PMD_SIZE on x86_64 and PAGE_SIZE on x86_32. v2: drop cpu_has_pse test and make x86_64 always use PMD_SIZE and x86_32 PAGE_SIZE as suggested by hpa. Signed-off-by: Tejun Heo Reported-by: Yanmin Zhang Reported-by: ShuoX Liu Acked-by: H. Peter Anvin LKML-Reference: <4F97BA98.6010001@intel.com> Cc: stable@vger.kernel.org --- arch/x86/kernel/setup_percpu.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c index 71f4727..5a98aa2 100644 --- a/arch/x86/kernel/setup_percpu.c +++ b/arch/x86/kernel/setup_percpu.c @@ -185,10 +185,22 @@ void __init setup_per_cpu_areas(void) #endif rc = -EINVAL; if (pcpu_chosen_fc != PCPU_FC_PAGE) { - const size_t atom_size = cpu_has_pse ? PMD_SIZE : PAGE_SIZE; const size_t dyn_size = PERCPU_MODULE_RESERVE + PERCPU_DYNAMIC_RESERVE - PERCPU_FIRST_CHUNK_RESERVE; + size_t atom_size; + /* + * On 64bit, use PMD_SIZE for atom_size so that embedded + * percpu areas are aligned to PMD. This, in the future, + * can also allow using PMD mappings in vmalloc area. Use + * PAGE_SIZE on 32bit as vmalloc space is highly contended + * and large vmalloc area allocs can easily fail. + */ +#ifdef CONFIG_X86_64 + atom_size = PMD_SIZE; +#else + atom_size = PAGE_SIZE; +#endif rc = pcpu_embed_first_chunk(PERCPU_FIRST_CHUNK_RESERVE, dyn_size, atom_size, pcpu_cpu_distance, -- cgit v1.1 From 3132d2827d92c2ee47fdf4dbec75bba0a2f291cb Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sat, 5 May 2012 02:31:23 +0100 Subject: sfc: Fix division by zero when using one RX channel and no SR-IOV If RSS is disabled on the PF (efx->n_rx_channels == 1) we try to set up the indirection table so that VFs can use it, setting efx->rss_spread = efx_vf_size(efx). But if SR-IOV was disabled at compile time, this evaluates to 0 and we end up dividing by zero when initialising the table. I considered changing the fallback definition of efx_vf_size() to return 1, but its value is really meaningless if we are not going to enable VFs. Therefore add a condition of efx_sriov_wanted(efx) in efx_probe_interrupts(). Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/efx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c index 3cbfbff..4a00053 100644 --- a/drivers/net/ethernet/sfc/efx.c +++ b/drivers/net/ethernet/sfc/efx.c @@ -1349,7 +1349,7 @@ static int efx_probe_interrupts(struct efx_nic *efx) } /* RSS might be usable on VFs even if it is disabled on the PF */ - efx->rss_spread = (efx->n_rx_channels > 1 ? + efx->rss_spread = ((efx->n_rx_channels > 1 || !efx_sriov_wanted(efx)) ? efx->n_rx_channels : efx_vf_size(efx)); return 0; -- cgit v1.1 From a7ac56de8316c0eb1111824c9add045cac2bd7a2 Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Sun, 29 Apr 2012 14:40:42 +0100 Subject: ARM: kirkwood: add missing kexec.h include Fixes the following build error when CONFIG_KEXEC is enabled: CC arch/arm/mach-kirkwood/board-dt.o arch/arm/mach-kirkwood/board-dt.c: In function 'kirkwood_dt_init': arch/arm/mach-kirkwood/board-dt.c:52:2: error: 'kexec_reinit' undeclared (first use in this function) arch/arm/mach-kirkwood/board-dt.c:52:2: note: each undeclared identifier is reported only once for each function it appears in Signed-off-by: Ian Campbell [v4, rebase onto recent Linus for repost] [v3, speak actual English in the commit message, thanks Sergei Shtylyov] [v2, using linux/kexec.h not asm/kexec.h] Signed-off-by: Jason Cooper --- arch/arm/mach-kirkwood/board-dt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 1c672d9..f7fe1b9 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include #include -- cgit v1.1 From 48d99f47a81a66bdd61a348c7fe8df5a7afdf5f3 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sun, 8 Apr 2012 05:18:53 +0100 Subject: ARM: orion5x: Fix GPIO enable bits for MPP9 Commit 554cdaefd1cf7bb54b209c4e68c7cec87ce442a9 ('ARM: orion5x: Refactor mpp code to use common orion platform mpp.') seems to have accidentally inverted the GPIO valid bits for MPP9 (only). For the mv2120 platform which uses MPP9 as a GPIO LED device, this results in the error: [ 12.711476] leds-gpio: probe of leds-gpio failed with error -22 Reported-by: Henry von Tresckow References: http://bugs.debian.org/667446 Signed-off-by: Ben Hutchings Cc: stable@vger.kernel.org [v3.0+] Tested-by: Hans Henry von Tresckow Signed-off-by: Jason Cooper --- arch/arm/mach-orion5x/mpp.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-orion5x/mpp.h b/arch/arm/mach-orion5x/mpp.h index eac6897..db70e79 100644 --- a/arch/arm/mach-orion5x/mpp.h +++ b/arch/arm/mach-orion5x/mpp.h @@ -65,8 +65,8 @@ #define MPP8_GIGE MPP(8, 0x1, 0, 0, 1, 1, 1) #define MPP9_UNUSED MPP(9, 0x0, 0, 0, 1, 1, 1) -#define MPP9_GPIO MPP(9, 0x0, 0, 0, 1, 1, 1) -#define MPP9_GIGE MPP(9, 0x1, 1, 1, 1, 1, 1) +#define MPP9_GPIO MPP(9, 0x0, 1, 1, 1, 1, 1) +#define MPP9_GIGE MPP(9, 0x1, 0, 0, 1, 1, 1) #define MPP10_UNUSED MPP(10, 0x0, 0, 0, 1, 1, 1) #define MPP10_GPIO MPP(10, 0x0, 1, 1, 1, 1, 1) -- cgit v1.1 From 477206a018f902895bfcd069dd820bfe94c187b1 Mon Sep 17 00:00:00 2001 From: Julien Ducourthial Date: Wed, 9 May 2012 00:00:06 +0200 Subject: r8169: fix unsigned int wraparound with TSO The r8169 may get stuck or show bad behaviour after activating TSO : the net_device is not stopped when it has no more TX descriptors. This problem comes from TX_BUFS_AVAIL which may reach -1 when all transmit descriptors are in use. The patch simply tries to keep positive values. Tested with 8111d(onboard) on a D510MO, and with 8111e(onboard) on a Zotac 890GXITX. Signed-off-by: Julien Ducourthial Acked-by: Francois Romieu Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index f545093..ce6b44d 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -61,8 +61,12 @@ #define R8169_MSG_DEFAULT \ (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN) -#define TX_BUFFS_AVAIL(tp) \ - (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1) +#define TX_SLOTS_AVAIL(tp) \ + (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx) + +/* A skbuff with nr_frags needs nr_frags+1 entries in the tx queue */ +#define TX_FRAGS_READY_FOR(tp,nr_frags) \ + (TX_SLOTS_AVAIL(tp) >= (nr_frags + 1)) /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). The RTL chips use a 64 element hash table based on the Ethernet CRC. */ @@ -5115,7 +5119,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, u32 opts[2]; int frags; - if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) { + if (unlikely(!TX_FRAGS_READY_FOR(tp, skb_shinfo(skb)->nr_frags))) { netif_err(tp, drv, dev, "BUG! Tx Ring full when queue awake!\n"); goto err_stop_0; } @@ -5169,7 +5173,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, mmiowb(); - if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) { + if (!TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) { /* Avoid wrongly optimistic queue wake-up: rtl_tx thread must * not miss a ring update when it notices a stopped queue. */ @@ -5183,7 +5187,7 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb, * can't. */ smp_mb(); - if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS) + if (TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) netif_wake_queue(dev); } @@ -5306,7 +5310,7 @@ static void rtl_tx(struct net_device *dev, struct rtl8169_private *tp) */ smp_mb(); if (netif_queue_stopped(dev) && - (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) { + TX_FRAGS_READY_FOR(tp, MAX_SKB_FRAGS)) { netif_wake_queue(dev); } /* -- cgit v1.1 From 56dfa7fa19e36db352a94be022243ed461710119 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 8 May 2012 13:31:59 +1000 Subject: powerpc/irq: Fix bug with new lazy IRQ handling code We had a case where we could turn on hard interrupts while leaving the PACA_IRQ_HARD_DIS bit set in the PACA. This can in turn cause a BUG_ON() to hit in __check_irq_replay() due to interrupt state getting out of sync. The assembly code was also way too convoluted. Instead, we now leave it to the C code to do the right thing which ends up being smaller and more readable. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/entry_64.S | 18 ------------------ arch/powerpc/kernel/irq.c | 8 +++++++- 2 files changed, 7 insertions(+), 19 deletions(-) diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index f8a7a1a..fc60150 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -767,16 +767,6 @@ do_work: SOFT_DISABLE_INTS(r3,r4) 1: bl .preempt_schedule_irq - /* Hard-disable interrupts again (and update PACA) */ -#ifdef CONFIG_PPC_BOOK3E - wrteei 0 -#else - ld r10,PACAKMSR(r13) /* Get kernel MSR without EE */ - mtmsrd r10,1 -#endif /* CONFIG_PPC_BOOK3E */ - li r0,PACA_IRQ_HARD_DIS - stb r0,PACAIRQHAPPENED(r13) - /* Re-test flags and eventually loop */ clrrdi r9,r1,THREAD_SHIFT ld r4,TI_FLAGS(r9) @@ -787,14 +777,6 @@ do_work: user_work: #endif /* CONFIG_PREEMPT */ - /* Enable interrupts */ -#ifdef CONFIG_PPC_BOOK3E - wrteei 1 -#else - ori r10,r10,MSR_EE - mtmsrd r10,1 -#endif /* CONFIG_PPC_BOOK3E */ - andi. r0,r4,_TIF_NEED_RESCHED beq 1f bl .restore_interrupts diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 43eb74f..c6c6f3b 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -260,11 +260,17 @@ EXPORT_SYMBOL(arch_local_irq_restore); * if they are currently disabled. This is typically called before * schedule() or do_signal() when returning to userspace. We do it * in C to avoid the burden of dealing with lockdep etc... + * + * NOTE: This is called with interrupts hard disabled but not marked + * as such in paca->irq_happened, so we need to resync this. */ void restore_interrupts(void) { - if (irqs_disabled()) + if (irqs_disabled()) { + local_paca->irq_happened |= PACA_IRQ_HARD_DIS; local_irq_enable(); + } else + __hard_irq_enable(); } #endif /* CONFIG_PPC64 */ -- cgit v1.1 From a3512b2dd57cb653bb33645ca9c934436e547e3c Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Tue, 8 May 2012 13:38:50 +1000 Subject: powerpc/irq: Make alignment & program interrupt behave the same Alignment was the last user of the ENABLE_INTS macro, which we can now remove. All non-syscall exceptions now disable interrupts on entry, they get re-enabled conditionally from C code. Don't unconditionally re-enable in program check either, check the original context. Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/include/asm/exception-64s.h | 7 ------- arch/powerpc/kernel/exceptions-64s.S | 2 +- arch/powerpc/kernel/traps.c | 10 ++++++++-- 3 files changed, 9 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 548da3a..d58fc4e 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -288,13 +288,6 @@ label##_hv: \ /* Exception addition: Hard disable interrupts */ #define DISABLE_INTS SOFT_DISABLE_INTS(r10,r11) -/* Exception addition: Keep interrupt state */ -#define ENABLE_INTS \ - ld r11,PACAKMSR(r13); \ - ld r12,_MSR(r1); \ - rlwimi r11,r12,0,MSR_EE; \ - mtmsrd r11,1 - #define ADD_NVGPRS \ bl .save_nvgprs diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index cb705fd..8f880bc 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -768,8 +768,8 @@ alignment_common: std r3,_DAR(r1) std r4,_DSISR(r1) bl .save_nvgprs + DISABLE_INTS addi r3,r1,STACK_FRAME_OVERHEAD - ENABLE_INTS bl .alignment_exception b .ret_from_except diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index 6aa0c66..1589723 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -248,7 +248,7 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr) addr, regs->nip, regs->link, code); } - if (!arch_irq_disabled_regs(regs)) + if (arch_irqs_disabled() && !arch_irq_disabled_regs(regs)) local_irq_enable(); memset(&info, 0, sizeof(info)); @@ -1019,7 +1019,9 @@ void __kprobes program_check_exception(struct pt_regs *regs) return; } - local_irq_enable(); + /* We restore the interrupt state now */ + if (!arch_irq_disabled_regs(regs)) + local_irq_enable(); #ifdef CONFIG_MATH_EMULATION /* (reason & REASON_ILLEGAL) would be the obvious thing here, @@ -1069,6 +1071,10 @@ void alignment_exception(struct pt_regs *regs) { int sig, code, fixed = 0; + /* We restore the interrupt state now */ + if (!arch_irq_disabled_regs(regs)) + local_irq_enable(); + /* we don't implement logging of alignment exceptions */ if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS)) fixed = fix_alignment(regs); -- cgit v1.1 From 32cf4023e689ad5b3a81a749d8cc99d7f184cb99 Mon Sep 17 00:00:00 2001 From: David Henningsson Date: Fri, 4 May 2012 11:05:55 +0200 Subject: ALSA: HDA: Lessen CPU usage when waiting for chip to respond When an IRQ for some reason gets lost, we wait up to a second using udelay, which is CPU intensive. This patch improves the situation by waiting about 30 ms in the CPU intensive mode, then stepping down to using msleep(2) instead. In essence, we trade some granularity in exchange for less CPU consumption when the waiting time is a bit longer. As a result, PulseAudio should no longer be killed by the kernel for taking up to much RT-prio CPU time. At least not for *this* reason. Signed-off-by: David Henningsson Tested-by: Arun Raghavan Cc: Signed-off-by: Takashi Iwai --- sound/pci/hda/hda_intel.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 6e958bf..1f35052 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -783,11 +783,13 @@ static unsigned int azx_rirb_get_response(struct hda_bus *bus, { struct azx *chip = bus->private_data; unsigned long timeout; + unsigned long loopcounter; int do_poll = 0; again: timeout = jiffies + msecs_to_jiffies(1000); - for (;;) { + + for (loopcounter = 0;; loopcounter++) { if (chip->polling_mode || do_poll) { spin_lock_irq(&chip->reg_lock); azx_update_rirb(chip); @@ -803,7 +805,7 @@ static unsigned int azx_rirb_get_response(struct hda_bus *bus, } if (time_after(jiffies, timeout)) break; - if (bus->needs_damn_long_delay) + if (bus->needs_damn_long_delay || loopcounter > 3000) msleep(2); /* temporary workaround */ else { udelay(10); -- cgit v1.1 From 331b646d60b0c3885208e1e02bd9f40319953efc Mon Sep 17 00:00:00 2001 From: Avi Kivity Date: Wed, 18 Apr 2012 19:23:50 +0300 Subject: KVM: ia64: fix build due to typo s/kcm/kvm/. Signed-off-by: Marcelo Tosatti Signed-off-by: Avi Kivity --- arch/ia64/kvm/kvm-ia64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c index f5104b7..463fb3b 100644 --- a/arch/ia64/kvm/kvm-ia64.c +++ b/arch/ia64/kvm/kvm-ia64.c @@ -1174,7 +1174,7 @@ out: bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { - return irqchip_in_kernel(vcpu->kcm) == (vcpu->arch.apic != NULL); + return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL); } int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) -- cgit v1.1 From c8587193ba511b788a9888e5e701a9747e70c0d8 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Wed, 9 May 2012 12:57:05 +0200 Subject: ASoC: sh: fix migor.c compilation Fix a recent compilation breakage, caused by a change in SH clock API. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mark Brown --- sound/soc/sh/migor.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sh/migor.c b/sound/soc/sh/migor.c index 9d9ad8d..8526e1e 100644 --- a/sound/soc/sh/migor.c +++ b/sound/soc/sh/migor.c @@ -35,7 +35,7 @@ static unsigned long siumckb_recalc(struct clk *clk) return codec_freq; } -static struct clk_ops siumckb_clk_ops = { +static struct sh_clk_ops siumckb_clk_ops = { .recalc = siumckb_recalc, }; -- cgit v1.1 From 6560ffd1ccd688152393dc7c35dbdcc33140633b Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Wed, 9 May 2012 17:43:12 +0530 Subject: regmap: fix possible memory corruption in regmap_bulk_read() The function regmap_bulk_read() calls the regmap_read() for each register if set of register has volatile and cache is enabled. In this case, last few register read makes the memory corruption if the register size is not the size of unsigned int. The regam_read() takes argument as unsigned int for returning value and it update the value as *val = map->format.parse_val(map->work_buf); This causes complete 4 bytes (size of unsigned int) to get written. Now if client pass the memory pointer for value which is equal to the required size of register count in regmap_bulk_read() then last few register read actually update the memory beyond passed pointer size. Avoid this by using local variable for read and then do memcpy() for actual byte copy to passed pointer based on register size. I allocated one pointer ptr and take first 16 bytes dump of that pointer then call regmap_bulk_read() with pointer which is just on top of this allocated pointer and register count of 128. Here register size is 1 byte. The memory trace of last 5 register read are as follows: [ 5.438589] regmap_bulk_read after regamp_read() for register 122 [ 5.447421] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.467535] regmap_bulk_read after regamp_read() for register 123 [ 5.476374] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.496425] regmap_bulk_read after regamp_read() for register 124 [ 5.505260] 0xef993c20 0xef993c00 0x00000000 0x00000001 [ 5.525372] regmap_bulk_read after regamp_read() for register 125 [ 5.534205] 0xef993c00 0xef993c00 0x00000000 0x00000001 [ 5.554258] regmap_bulk_read after regamp_read() for register 126 [ 5.563100] 0xef990000 0xef993c00 0x00000000 0x00000001 [ 5.554258] regmap_bulk_read after regamp_read() for register 127 [ 5.587108] 0xef000000 0xef993c00 0x00000000 0x00000001 Here it is observed that the memory content at first word started changing on last 3 regmap_read() and so corruption happened. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 7a3f535..bb80853 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -775,9 +775,11 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, map->format.parse_val(val + i); } else { for (i = 0; i < val_count; i++) { - ret = regmap_read(map, reg + i, val + (i * val_bytes)); + unsigned int ival; + ret = regmap_read(map, reg + i, &ival); if (ret != 0) return ret; + memcpy(val + (i * val_bytes), &ival, val_bytes); } } -- cgit v1.1 From 1a21932edc10de0dfd843797427719e5da43355b Mon Sep 17 00:00:00 2001 From: Enrico Butera Date: Wed, 9 May 2012 11:27:59 +0200 Subject: ARM: OMAP: igep0020: fix smsc911x dummy regulator id id 0 is already used and causes errors at boot: WARNING: at fs/sysfs/dir.c:508 sysfs_add_one+0x9c/0xac() sysfs: cannot create duplicate filename '/devices/platform/reg-fixed-voltage.0' Fix it by using the next available one (id=1). This was caused by 5b3689f4 (ARM: OMAP2+: smsc911x: Add fixed board regulators) that did not account for some regulators already being used. Signed-off-by: Enrico Butera [tony@atomide.com: updated comments for regression causing commit] Signed-off-by: Tony Lindgren --- arch/arm/mach-omap2/board-igep0020.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-omap2/board-igep0020.c b/arch/arm/mach-omap2/board-igep0020.c index 930c0d3..740cee9 100644 --- a/arch/arm/mach-omap2/board-igep0020.c +++ b/arch/arm/mach-omap2/board-igep0020.c @@ -641,7 +641,7 @@ static struct regulator_consumer_supply dummy_supplies[] = { static void __init igep_init(void) { - regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); + regulator_register_fixed(1, dummy_supplies, ARRAY_SIZE(dummy_supplies)); omap3_mux_init(board_mux, OMAP_PACKAGE_CBB); /* Get IGEP2 hardware revision */ -- cgit v1.1 From 42b64281453249dac52861f9b97d18552a7ec62b Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Fri, 27 Apr 2012 08:42:53 -0700 Subject: percpu: pcpu_embed_first_chunk() should free unused parts after all allocs are complete pcpu_embed_first_chunk() allocates memory for each node, copies percpu data and frees unused portions of it before proceeding to the next group. This assumes that allocations for different nodes doesn't overlap; however, depending on memory topology, the bootmem allocator may end up allocating memory from a different node than the requested one which may overlap with the portion freed from one of the previous percpu areas. This leads to percpu groups for different nodes overlapping which is a serious bug. This patch separates out copy & partial free from the allocation loop such that all allocations are complete before partial frees happen. This also fixes overlapping frees which could happen on allocation failure path - out_free_areas path frees whole groups but the groups could have portions freed at that point. Signed-off-by: Tejun Heo Cc: stable@vger.kernel.org Reported-by: "Pavel V. Panteleev" Tested-by: "Pavel V. Panteleev" LKML-Reference: --- mm/percpu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/mm/percpu.c b/mm/percpu.c index f921fdf..ac5c626 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1650,6 +1650,16 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size, areas[group] = ptr; base = min(ptr, base); + } + + /* + * Copy data and free unused parts. This should happen after all + * allocations are complete; otherwise, we may end up with + * overlapping groups. + */ + for (group = 0; group < ai->nr_groups; group++) { + struct pcpu_group_info *gi = &ai->groups[group]; + void *ptr = areas[group]; for (i = 0; i < gi->nr_units; i++, ptr += ai->unit_size) { if (gi->cpu_map[i] == NR_CPUS) { -- cgit v1.1 From 100d13c3b5b9410f604b86f5e0a34da64b8cf659 Mon Sep 17 00:00:00 2001 From: Catalin Marinas Date: Wed, 9 May 2012 16:55:19 +0100 Subject: kmemleak: Fix the kmemleak tracking of the percpu areas with !SMP Kmemleak tracks the percpu allocations via a specific API and the originally allocated areas must be removed from kmemleak (via kmemleak_free). The code was already doing this for SMP systems. Reported-by: Sami Liedes Cc: Tejun Heo Cc: Christoph Lameter Signed-off-by: Catalin Marinas Signed-off-by: Tejun Heo --- mm/percpu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/percpu.c b/mm/percpu.c index ac5c626..bb4be74 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -1895,6 +1895,8 @@ void __init setup_per_cpu_areas(void) fc = __alloc_bootmem(unit_size, PAGE_SIZE, __pa(MAX_DMA_ADDRESS)); if (!ai || !fc) panic("Failed to allocate memory for percpu areas."); + /* kmemleak tracks the percpu allocations separately */ + kmemleak_free(fc); ai->dyn_size = unit_size; ai->unit_size = unit_size; -- cgit v1.1 From 48a5730e5b71201e226ff06e245bf308feba5f10 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Mon, 30 Apr 2012 17:36:21 +0300 Subject: cifs: fix revalidation test in cifs_llseek() This test is always true so it means we revalidate the length every time, which generates more network traffic. When it is SEEK_SET or SEEK_CUR, then we don't need to revalidate. Signed-off-by: Dan Carpenter Reviewed-by: Jeff Layton Signed-off-by: Steve French --- fs/cifs/cifsfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index ca6a379..541ef81 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -699,7 +699,7 @@ static loff_t cifs_llseek(struct file *file, loff_t offset, int origin) * origin == SEEK_END || SEEK_DATA || SEEK_HOLE => we must revalidate * the cached file length */ - if (origin != SEEK_SET || origin != SEEK_CUR) { + if (origin != SEEK_SET && origin != SEEK_CUR) { int rc; struct inode *inode = file->f_path.dentry->d_inode; -- cgit v1.1 From f4e1648a4f4acc964cefc51c1637aad0dca6c517 Mon Sep 17 00:00:00 2001 From: Vikas Chaudhary Date: Wed, 25 Apr 2012 07:26:13 -0700 Subject: [SCSI] qla2xxx: Fix reset time out as qla2xxx not ack to reset request. Signed-off-by: Vikas Chaudhary Signed-off-by: Chad Dupuis Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_nx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c index f052853..de722a9 100644 --- a/drivers/scsi/qla2xxx/qla_nx.c +++ b/drivers/scsi/qla2xxx/qla_nx.c @@ -3125,6 +3125,7 @@ qla82xx_need_reset_handler(scsi_qla_host_t *vha) ql_log(ql_log_info, vha, 0x00b7, "HW State: COLD/RE-INIT.\n"); qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE, QLA82XX_DEV_COLD); + qla82xx_set_rst_ready(ha); if (ql2xmdenable) { if (qla82xx_md_collect(vha)) ql_log(ql_log_warn, vha, 0xb02c, -- cgit v1.1 From a49393f2ae13e3a0c61dbdbea77c2ff7614df474 Mon Sep 17 00:00:00 2001 From: Giridhar Malavali Date: Wed, 25 Apr 2012 07:26:14 -0700 Subject: [SCSI] qla2xxx: Block flash access from application when device is initialized for ISP82xx. Signed-off-by: Giridhar Malavali Signed-off-by: Chad Dupuis Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_bsg.c | 3 +++ drivers/scsi/qla2xxx/qla_sup.c | 3 +++ 2 files changed, 6 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index f74cc06..bc3cc6d 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -1367,6 +1367,9 @@ qla2x00_read_optrom(struct fc_bsg_job *bsg_job) struct qla_hw_data *ha = vha->hw; int rval = 0; + if (ha->flags.isp82xx_reset_hdlr_active) + return -EBUSY; + rval = qla2x00_optrom_setup(bsg_job, vha, 0); if (rval) return rval; diff --git a/drivers/scsi/qla2xxx/qla_sup.c b/drivers/scsi/qla2xxx/qla_sup.c index 3c13c0a..a683e76 100644 --- a/drivers/scsi/qla2xxx/qla_sup.c +++ b/drivers/scsi/qla2xxx/qla_sup.c @@ -1017,6 +1017,9 @@ qla2xxx_flash_npiv_conf(scsi_qla_host_t *vha) !IS_CNA_CAPABLE(ha) && !IS_QLA2031(ha)) return; + if (ha->flags.isp82xx_reset_hdlr_active) + return; + ha->isp_ops->read_optrom(vha, (uint8_t *)&hdr, ha->flt_region_npiv_conf << 2, sizeof(struct qla_npiv_header)); if (hdr.version == __constant_cpu_to_le16(0xffff)) -- cgit v1.1 From 4aee57667e9b237d0bd0c5a167c8b6103a27756a Mon Sep 17 00:00:00 2001 From: Giridhar Malavali Date: Wed, 25 Apr 2012 07:26:15 -0700 Subject: [SCSI] qla2xxx: Proper completion to scsi-ml for scsi status task_set_full and busy. In case of firmmware detected under-run condition and scsi status of task_set_full or busy_condition, return that to the mid layer for proper error handling instead of DID_ERROR (which causes error handler activation and a full retry). Signed-off-by: Giridhar Malavali Signed-off-by: Chad Dupuis Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_dbg.c | 2 +- drivers/scsi/qla2xxx/qla_isr.c | 15 +++++++++++++-- 2 files changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_dbg.c b/drivers/scsi/qla2xxx/qla_dbg.c index 897731b..62324a1 100644 --- a/drivers/scsi/qla2xxx/qla_dbg.c +++ b/drivers/scsi/qla2xxx/qla_dbg.c @@ -15,7 +15,7 @@ * | Mailbox commands | 0x113e | 0x112c-0x112e | * | | | 0x113a | * | Device Discovery | 0x2086 | 0x2020-0x2022 | - * | Queue Command and IO tracing | 0x302f | 0x3006,0x3008 | + * | Queue Command and IO tracing | 0x3030 | 0x3006,0x3008 | * | | | 0x302d-0x302e | * | DPC Thread | 0x401c | | * | Async Events | 0x505d | 0x502b-0x502f | diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c index f79844c..ce42288 100644 --- a/drivers/scsi/qla2xxx/qla_isr.c +++ b/drivers/scsi/qla2xxx/qla_isr.c @@ -1715,13 +1715,24 @@ qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt) res = DID_ERROR << 16; break; } - } else { + } else if (lscsi_status != SAM_STAT_TASK_SET_FULL && + lscsi_status != SAM_STAT_BUSY) { + /* + * scsi status of task set and busy are considered to be + * task not completed. + */ + ql_dbg(ql_dbg_io, fcport->vha, 0x301f, "Dropped frame(s) detected (0x%x " - "of 0x%x bytes).\n", resid, scsi_bufflen(cp)); + "of 0x%x bytes).\n", resid, + scsi_bufflen(cp)); res = DID_ERROR << 16 | lscsi_status; goto check_scsi_status; + } else { + ql_dbg(ql_dbg_io, fcport->vha, 0x3030, + "scsi_status: 0x%x, lscsi_status: 0x%x\n", + scsi_status, lscsi_status); } res = DID_OK << 16 | lscsi_status; -- cgit v1.1 From aaf4d3e2c647b5d1b24082b766c173e6c7edf79b Mon Sep 17 00:00:00 2001 From: Saurav Kashyap Date: Wed, 25 Apr 2012 07:26:16 -0700 Subject: [SCSI] qla2xxx: Properly check for current state after the fabric-login request. [jejb: checkpatch fixes] Signed-off-by: Saurav Kashyap Signed-off-by: Chad Dupuis Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_os.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index a2f9992..7db8033 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -3577,9 +3577,25 @@ void qla2x00_relogin(struct scsi_qla_host *vha) continue; /* Attempt a retry. */ status = 1; - } else + } else { status = qla2x00_fabric_login(vha, fcport, &next_loopid); + if (status == QLA_SUCCESS) { + int status2; + uint8_t opts; + + opts = 0; + if (fcport->flags & + FCF_FCP2_DEVICE) + opts |= BIT_1; + status2 = + qla2x00_get_port_database( + vha, fcport, + opts); + if (status2 != QLA_SUCCESS) + status = 1; + } + } } else status = qla2x00_local_device_login(vha, fcport); -- cgit v1.1 From 6abd7f132a4b74d9cdd3ef79fc71ca73909631f2 Mon Sep 17 00:00:00 2001 From: Chad Dupuis Date: Wed, 25 Apr 2012 07:26:17 -0700 Subject: [SCSI] qla2xxx: Update version number to 8.04.00.03-k. Signed-off-by: Giridhar Malavali Signed-off-by: Chad Dupuis Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_version.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_version.h b/drivers/scsi/qla2xxx/qla_version.h index 29d780c..f5fdb16 100644 --- a/drivers/scsi/qla2xxx/qla_version.h +++ b/drivers/scsi/qla2xxx/qla_version.h @@ -7,9 +7,9 @@ /* * Driver version */ -#define QLA2XXX_VERSION "8.03.07.13-k" +#define QLA2XXX_VERSION "8.04.00.03-k" #define QLA_DRIVER_MAJOR_VER 8 -#define QLA_DRIVER_MINOR_VER 3 -#define QLA_DRIVER_PATCH_VER 7 +#define QLA_DRIVER_MINOR_VER 4 +#define QLA_DRIVER_PATCH_VER 0 #define QLA_DRIVER_BETA_VER 3 -- cgit v1.1 From 3c8d9a957d0ae62c2815393a781ab7ff4d5205e7 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Fri, 4 May 2012 09:40:04 +0000 Subject: [SCSI] fix oops in all legacy host adapters caused by 6f381fa Commit 6f381fa344911d5a234b13574433cf23036f9467 Author: Lin Ming [SCSI] scsi_lib: use correct DMA device in __scsi_alloc_queue Caused a regression where we oops in every legacy mode SCSI host driver because they supply a NULL pointer to scsi_add_host(). Fix this by checking for the NULL in scsi_add_host_with_dma() and changing the DMA device to being the platform_bus in that case (which replicates the original behaviour). Reported-by: Al Viro Signed-off-by: James Bottomley --- drivers/scsi/hosts.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 351dc0b..a3a056a 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -218,6 +218,9 @@ int scsi_add_host_with_dma(struct Scsi_Host *shost, struct device *dev, if (!shost->shost_gendev.parent) shost->shost_gendev.parent = dev ? dev : &platform_bus; + if (!dma_dev) + dma_dev = shost->shost_gendev.parent; + shost->dma_dev = dma_dev; error = device_add(&shost->shost_gendev); -- cgit v1.1 From e4594bb50518eb89c447be97dabd5bd99f405d71 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Fri, 4 May 2012 12:32:04 +0200 Subject: [SCSI] virtio_scsi: fix TMF use-after-free Fix a use-after-free in the TMF path, where cmd may have been already freed by virtscsi_complete_free when wait_for_completion restarts executing virtscsi_tmf. Technically a race, but in practice the command will always be freed long before the completion waiter is awoken. The fix is to make callers specifying a completion responsible for freeing the command in all cases. Signed-off-by: Hu Tao Signed-off-by: Paolo Bonzini Signed-off-by: James Bottomley --- drivers/scsi/virtio_scsi.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c index efccd72..1b38431 100644 --- a/drivers/scsi/virtio_scsi.c +++ b/drivers/scsi/virtio_scsi.c @@ -175,7 +175,8 @@ static void virtscsi_complete_free(void *buf) if (cmd->comp) complete_all(cmd->comp); - mempool_free(cmd, virtscsi_cmd_pool); + else + mempool_free(cmd, virtscsi_cmd_pool); } static void virtscsi_ctrl_done(struct virtqueue *vq) @@ -311,21 +312,22 @@ out: static int virtscsi_tmf(struct virtio_scsi *vscsi, struct virtio_scsi_cmd *cmd) { DECLARE_COMPLETION_ONSTACK(comp); - int ret; + int ret = FAILED; cmd->comp = ∁ - ret = virtscsi_kick_cmd(vscsi, vscsi->ctrl_vq, cmd, - sizeof cmd->req.tmf, sizeof cmd->resp.tmf, - GFP_NOIO); - if (ret < 0) - return FAILED; + if (virtscsi_kick_cmd(vscsi, vscsi->ctrl_vq, cmd, + sizeof cmd->req.tmf, sizeof cmd->resp.tmf, + GFP_NOIO) < 0) + goto out; wait_for_completion(&comp); - if (cmd->resp.tmf.response != VIRTIO_SCSI_S_OK && - cmd->resp.tmf.response != VIRTIO_SCSI_S_FUNCTION_SUCCEEDED) - return FAILED; + if (cmd->resp.tmf.response == VIRTIO_SCSI_S_OK || + cmd->resp.tmf.response == VIRTIO_SCSI_S_FUNCTION_SUCCEEDED) + ret = SUCCESS; - return SUCCESS; +out: + mempool_free(cmd, virtscsi_cmd_pool); + return ret; } static int virtscsi_device_reset(struct scsi_cmnd *sc) -- cgit v1.1 From 6edd94db250038c8fdf176f23ca4017d2f312509 Mon Sep 17 00:00:00 2001 From: Tarun Kanti DebBarma Date: Mon, 30 Apr 2012 12:50:12 +0530 Subject: gpio/omap: fix incorrect initialization of omap_gpio_mod_init Initialization of irqenable, irqstatus registers is the common operation done in this function for all OMAP platforms, viz. OMAP1, OMAP2+. The latter _gpio_rmw()'s which supposedly got introduced wrongly to take care of OMAP2+ platforms were overwriting initially programmed OMAP1 value breaking functionality on OMAP1. Somehow incorrect assumption was made that each _gpio_rmw()'s were mutually exclusive. On close observation it is found that the first _gpio_rmw() which is supposedly done to take care of OMAP1 platform is generic enough and takes care of OMAP2+ platform as well. Therefore remove the latter _gpio_rmw() to irqenable as they are redundant now. Writing to ctrl and debounce_en registers for OMAP2+ platforms are modified to match the original(pre-cleanup) code where the registers are initialized with 0. In the cleanup series since we are using _gpio_rmw(reg, 0, 1), instead of __raw_writel(), we are just reading and writing the same values to ctrl and debounce_en. This is not an issue for debounce_en register because it has 0x0 as the default value. But in the case of ctrl register the default value is 0x2 (GATINGRATIO = 0x1) so that we end up writing 0x2 instead of intended 0 value. Therefore changing back to __raw_writel() as this is sufficient for this case besides simpler to understand. Also, change irqstatus initalization logic that avoids comparison with bool, besides making it fit in a single line. Cc: stable@vger.kernel.org Cc: Tony Lindgren Cc: Kevin Hilman Cc: Santosh Shilimkar Cc: Grant Likely Reported-by: Janusz Krzysztofik Tested-by: Janusz Krzysztofik Signed-off-by: Tarun Kanti DebBarma Signed-off-by: Kevin Hilman --- drivers/gpio/gpio-omap.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 1adc2ec..4461540 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -965,18 +965,15 @@ static void omap_gpio_mod_init(struct gpio_bank *bank) } _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->irqenable_inv); - _gpio_rmw(base, bank->regs->irqstatus, l, - bank->regs->irqenable_inv == false); - _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->debounce_en != 0); - _gpio_rmw(base, bank->regs->irqenable, l, bank->regs->ctrl != 0); + _gpio_rmw(base, bank->regs->irqstatus, l, !bank->regs->irqenable_inv); if (bank->regs->debounce_en) - _gpio_rmw(base, bank->regs->debounce_en, 0, 1); + __raw_writel(0, base + bank->regs->debounce_en); /* Save OE default value (0xffffffff) in the context */ bank->context.oe = __raw_readl(bank->base + bank->regs->direction); /* Initialize interface clk ungated, module enabled */ if (bank->regs->ctrl) - _gpio_rmw(base, bank->regs->ctrl, 0, 1); + __raw_writel(0, base + bank->regs->ctrl); } static __devinit void -- cgit v1.1 From b7dafa0ef3145c31d7753be0a08b3cbda51f0209 Mon Sep 17 00:00:00 2001 From: Jan Kiszka Date: Thu, 10 May 2012 10:04:36 -0300 Subject: compat: Fix RT signal mask corruption via sigprocmask compat_sys_sigprocmask reads a smaller signal mask from userspace than sigprogmask accepts for setting. So the high word of blocked.sig[0] will be cleared, releasing any potentially blocked RT signal. This was discovered via userspace code that relies on get/setcontext. glibc's i386 versions of those functions use sigprogmask instead of rt_sigprogmask to save/restore signal mask and caused RT signal unblocking this way. As suggested by Linus, this replaces the sys_sigprocmask based compat version with one that open-codes the required logic, including the merge of the existing blocked set with the new one provided on SIG_SETMASK. Signed-off-by: Jan Kiszka Signed-off-by: Linus Torvalds --- kernel/compat.c | 63 +++++++++++++++++++++++++++++++++++++++++---------------- 1 file changed, 46 insertions(+), 17 deletions(-) diff --git a/kernel/compat.c b/kernel/compat.c index 74ff849..d2c67aa 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -372,25 +372,54 @@ asmlinkage long compat_sys_sigpending(compat_old_sigset_t __user *set) #ifdef __ARCH_WANT_SYS_SIGPROCMASK -asmlinkage long compat_sys_sigprocmask(int how, compat_old_sigset_t __user *set, - compat_old_sigset_t __user *oset) +/* + * sys_sigprocmask SIG_SETMASK sets the first (compat) word of the + * blocked set of signals to the supplied signal set + */ +static inline void compat_sig_setmask(sigset_t *blocked, compat_sigset_word set) { - old_sigset_t s; - long ret; - mm_segment_t old_fs; + memcpy(blocked->sig, &set, sizeof(set)); +} - if (set && get_user(s, set)) - return -EFAULT; - old_fs = get_fs(); - set_fs(KERNEL_DS); - ret = sys_sigprocmask(how, - set ? (old_sigset_t __user *) &s : NULL, - oset ? (old_sigset_t __user *) &s : NULL); - set_fs(old_fs); - if (ret == 0) - if (oset) - ret = put_user(s, oset); - return ret; +asmlinkage long compat_sys_sigprocmask(int how, + compat_old_sigset_t __user *nset, + compat_old_sigset_t __user *oset) +{ + old_sigset_t old_set, new_set; + sigset_t new_blocked; + + old_set = current->blocked.sig[0]; + + if (nset) { + if (get_user(new_set, nset)) + return -EFAULT; + new_set &= ~(sigmask(SIGKILL) | sigmask(SIGSTOP)); + + new_blocked = current->blocked; + + switch (how) { + case SIG_BLOCK: + sigaddsetmask(&new_blocked, new_set); + break; + case SIG_UNBLOCK: + sigdelsetmask(&new_blocked, new_set); + break; + case SIG_SETMASK: + compat_sig_setmask(&new_blocked, new_set); + break; + default: + return -EINVAL; + } + + set_current_blocked(&new_blocked); + } + + if (oset) { + if (put_user(old_set, oset)) + return -EFAULT; + } + + return 0; } #endif -- cgit v1.1 From a5a737e090e25981e99d69f01400e3a80356581c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 10 May 2012 11:00:46 -0700 Subject: sparc64: Do not clobber %g2 in xcall_fetch_glob_regs(). %g2 is meant to hold the CPUID number throughout this routine, since at the very beginning, and at the very end, we use %g2 to calculate indexes into per-cpu arrays. However we erroneously clobber it in order to hold the %cwp register value mid-stream. Fix this code to use %g3 for the %cwp read and related calulcations instead. Reported-by: Meelis Roos Signed-off-by: David S. Miller --- arch/sparc/kernel/central.c | 2 +- arch/sparc/mm/ultra.S | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/sparc/kernel/central.c b/arch/sparc/kernel/central.c index 38d48a5..9708851 100644 --- a/arch/sparc/kernel/central.c +++ b/arch/sparc/kernel/central.c @@ -269,4 +269,4 @@ static int __init sunfire_init(void) return 0; } -subsys_initcall(sunfire_init); +fs_initcall(sunfire_init); diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S index b57a594..874162a 100644 --- a/arch/sparc/mm/ultra.S +++ b/arch/sparc/mm/ultra.S @@ -495,11 +495,11 @@ xcall_fetch_glob_regs: stx %o7, [%g1 + GR_SNAP_O7] stx %i7, [%g1 + GR_SNAP_I7] /* Don't try this at home kids... */ - rdpr %cwp, %g2 - sub %g2, 1, %g7 + rdpr %cwp, %g3 + sub %g3, 1, %g7 wrpr %g7, %cwp mov %i7, %g7 - wrpr %g2, %cwp + wrpr %g3, %cwp stx %g7, [%g1 + GR_SNAP_RPC] sethi %hi(trap_block), %g7 or %g7, %lo(trap_block), %g7 -- cgit v1.1 From 16fbdce62d9c89b794e303f4a232e4749b77e9ac Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Thu, 10 May 2012 13:01:43 -0700 Subject: proc/pid/pagemap: correctly report non-present ptes and holes between vmas Reset the current pagemap-entry if the current pte isn't present, or if current vma is over. Otherwise pagemap reports last entry again and again. Non-present pte reporting was broken in commit 092b50bacd1c ("pagemap: introduce data structure for pagemap entry") Reporting for holes was broken in commit 5aaabe831eb5 ("pagemap: avoid splitting thp when reading /proc/pid/pagemap") Signed-off-by: Konstantin Khlebnikov Reported-by: Pavel Emelyanov Cc: Naoya Horiguchi Cc: KAMEZAWA Hiroyuki Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/proc/task_mmu.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 2d60492..1030a71 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -747,6 +747,8 @@ static void pte_to_pagemap_entry(pagemap_entry_t *pme, pte_t pte) else if (pte_present(pte)) *pme = make_pme(PM_PFRAME(pte_pfn(pte)) | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); + else + *pme = make_pme(PM_NOT_PRESENT); } #ifdef CONFIG_TRANSPARENT_HUGEPAGE @@ -761,6 +763,8 @@ static void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, if (pmd_present(pmd)) *pme = make_pme(PM_PFRAME(pmd_pfn(pmd) + offset) | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); + else + *pme = make_pme(PM_NOT_PRESENT); } #else static inline void thp_pmd_to_pagemap_entry(pagemap_entry_t *pme, @@ -801,8 +805,10 @@ static int pagemap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end, /* check to see if we've left 'vma' behind * and need a new, higher one */ - if (vma && (addr >= vma->vm_end)) + if (vma && (addr >= vma->vm_end)) { vma = find_vma(walk->mm, addr); + pme = make_pme(PM_NOT_PRESENT); + } /* check that 'vma' actually covers this address, * and that it isn't a huge page vma */ @@ -830,6 +836,8 @@ static void huge_pte_to_pagemap_entry(pagemap_entry_t *pme, if (pte_present(pte)) *pme = make_pme(PM_PFRAME(pte_pfn(pte) + offset) | PM_PSHIFT(PAGE_SHIFT) | PM_PRESENT); + else + *pme = make_pme(PM_NOT_PRESENT); } /* This function walks within one hugetlb entry in the single call */ @@ -839,7 +847,7 @@ static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask, { struct pagemapread *pm = walk->private; int err = 0; - pagemap_entry_t pme = make_pme(PM_NOT_PRESENT); + pagemap_entry_t pme; for (; addr != end; addr += PAGE_SIZE) { int offset = (addr & ~hmask) >> PAGE_SHIFT; -- cgit v1.1 From 93278814d3590eba0ee360b8d69a35c7f2203ea8 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Thu, 10 May 2012 13:01:44 -0700 Subject: mm: fix division by 0 in percpu_pagelist_fraction() percpu_pagelist_fraction_sysctl_handler() has only considered -EINVAL as a possible error from proc_dointvec_minmax(). If any other error is returned, it would proceed to divide by zero since percpu_pagelist_fraction wasn't getting initialized at any point. For example, writing 0 bytes into the proc file would trigger the issue. Signed-off-by: Sasha Levin Reviewed-by: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index a712fb9..b21b3db 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -105,7 +105,7 @@ unsigned long totalreserve_pages __read_mostly; */ unsigned long dirty_balance_reserve __read_mostly; -int percpu_pagelist_fraction; +int percpu_pagelist_fraction = 8; gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK; #ifdef CONFIG_PM_SLEEP @@ -5203,7 +5203,7 @@ int percpu_pagelist_fraction_sysctl_handler(ctl_table *table, int write, int ret; ret = proc_dointvec_minmax(table, write, buffer, length, ppos); - if (!write || (ret == -EINVAL)) + if (!write || (ret < 0)) return ret; for_each_populated_zone(zone) { for_each_possible_cpu(cpu) { -- cgit v1.1 From 4998a6c0edce7fae9c0a5463f6ec3fa585258ee7 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 10 May 2012 13:01:44 -0700 Subject: hugetlb: prevent BUG_ON in hugetlb_fault() -> hugetlb_cow() Commit 66aebce747eaf ("hugetlb: fix race condition in hugetlb_fault()") added code to avoid a race condition by elevating the page refcount in hugetlb_fault() while calling hugetlb_cow(). However, one code path in hugetlb_cow() includes an assertion that the page count is 1, whereas it may now also have the value 2 in this path. The consensus is that this BUG_ON has served its purpose, so rather than extending it to cover both cases, we just remove it. Signed-off-by: Chris Metcalf Acked-by: Mel Gorman Acked-by: Hillf Danton Acked-by: Hugh Dickins Cc: Michal Hocko Cc: KAMEZAWA Hiroyuki Cc: [3.0.29+, 3.2.16+, 3.3.3+] Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/hugetlb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 5a16423..ae8f708 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2498,7 +2498,6 @@ retry_avoidcopy: if (outside_reserve) { BUG_ON(huge_pte_none(pte)); if (unmap_ref_private(mm, vma, old_page, address)) { - BUG_ON(page_count(old_page) != 1); BUG_ON(huge_pte_none(pte)); spin_lock(&mm->page_table_lock); ptep = huge_pte_offset(mm, address & huge_page_mask(h)); -- cgit v1.1 From 5e2bf0142231194d36fdc9596b36a261ed2b9fe7 Mon Sep 17 00:00:00 2001 From: Mike Galbraith Date: Thu, 10 May 2012 13:01:45 -0700 Subject: namespaces, pid_ns: fix leakage on fork() failure Fork() failure post namespace creation for a child cloned with CLONE_NEWPID leaks pid_namespace/mnt_cache due to proc being mounted during creation, but not unmounted during cleanup. Call pid_ns_release_proc() during cleanup. Signed-off-by: Mike Galbraith Acked-by: Oleg Nesterov Reviewed-by: "Eric W. Biederman" Cc: Pavel Emelyanov Cc: Cyrill Gorcunov Cc: Louis Rilling Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/fork.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/kernel/fork.c b/kernel/fork.c index b9372a0..687a15d5 100644 --- a/kernel/fork.c +++ b/kernel/fork.c @@ -47,6 +47,7 @@ #include #include #include +#include #include #include #include @@ -1464,6 +1465,8 @@ bad_fork_cleanup_io: if (p->io_context) exit_io_context(p); bad_fork_cleanup_namespaces: + if (unlikely(clone_flags & CLONE_NEWPID)) + pid_ns_release_proc(p->nsproxy->pid_ns); exit_task_namespaces(p); bad_fork_cleanup_mm: if (p->mm) -- cgit v1.1 From 8c7577637ca31385e92769a77e2ab5b428e8b99c Mon Sep 17 00:00:00 2001 From: Sha Zhengju Date: Thu, 10 May 2012 13:01:45 -0700 Subject: memcg: free spare array to avoid memory leak When the last event is unregistered, there is no need to keep the spare array anymore. So free it to avoid memory leak. Signed-off-by: Sha Zhengju Acked-by: KAMEZAWA Hiroyuki Reviewed-by: Kirill A. Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/memcontrol.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 31ab9c3..b659260 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4507,6 +4507,12 @@ static void mem_cgroup_usage_unregister_event(struct cgroup *cgrp, swap_buffers: /* Swap primary and spare array */ thresholds->spare = thresholds->primary; + /* If all events are unregistered, free the spare array */ + if (!new) { + kfree(thresholds->spare); + thresholds->spare = NULL; + } + rcu_assign_pointer(thresholds->primary, new); /* To be sure that nobody uses thresholds */ -- cgit v1.1 From b8cd742acfd78a4689148fb80cf74bc26e7f1f3c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 10 May 2012 13:01:46 -0700 Subject: drivers/leds: correct __devexit annotations __devexit functions are discarded without CONFIG_HOTPLUG, so they need to be referenced carefully. A __devexit function may also not be called from a __devinit function. Signed-off-by: Arnd Bergmann Signed-off-by: Mathieu Poirier Cc: Bryan Wu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/leds/leds-netxbig.c | 4 ++-- drivers/leds/leds-ns2.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/leds/leds-netxbig.c b/drivers/leds/leds-netxbig.c index d8433f2..73973fd 100644 --- a/drivers/leds/leds-netxbig.c +++ b/drivers/leds/leds-netxbig.c @@ -112,7 +112,7 @@ err_free_addr: return err; } -static void __devexit gpio_ext_free(struct netxbig_gpio_ext *gpio_ext) +static void gpio_ext_free(struct netxbig_gpio_ext *gpio_ext) { int i; @@ -294,7 +294,7 @@ static ssize_t netxbig_led_sata_show(struct device *dev, static DEVICE_ATTR(sata, 0644, netxbig_led_sata_show, netxbig_led_sata_store); -static void __devexit delete_netxbig_led(struct netxbig_led_data *led_dat) +static void delete_netxbig_led(struct netxbig_led_data *led_dat) { if (led_dat->mode_val[NETXBIG_LED_SATA] != NETXBIG_LED_INVALID_MODE) device_remove_file(led_dat->cdev.dev, &dev_attr_sata); diff --git a/drivers/leds/leds-ns2.c b/drivers/leds/leds-ns2.c index 2f0a144..01cf89e 100644 --- a/drivers/leds/leds-ns2.c +++ b/drivers/leds/leds-ns2.c @@ -255,7 +255,7 @@ err_free_cmd: return ret; } -static void __devexit delete_ns2_led(struct ns2_led_data *led_dat) +static void delete_ns2_led(struct ns2_led_data *led_dat) { device_remove_file(led_dat->cdev.dev, &dev_attr_sata); led_classdev_unregister(&led_dat->cdev); -- cgit v1.1 From 6bc2e853c6b46a6041980d58200ad9b0a73a60ff Mon Sep 17 00:00:00 2001 From: Russ Anderson Date: Thu, 10 May 2012 13:01:46 -0700 Subject: mm: nobootmem: fix sign extend problem in __free_pages_memory() Systems with 8 TBytes of memory or greater can hit a problem where only the the first 8 TB of memory shows up. This is due to "int i" being smaller than "unsigned long start_aligned", causing the high bits to be dropped. The fix is to change `i' to unsigned long to match start_aligned and end_aligned. Thanks to Jack Steiner for assistance tracking this down. Signed-off-by: Russ Anderson Cc: Jack Steiner Cc: Johannes Weiner Cc: Tejun Heo Cc: David S. Miller Cc: Yinghai Lu Cc: Gavin Shan Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/nobootmem.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/nobootmem.c b/mm/nobootmem.c index e53bb8a..1983fb1 100644 --- a/mm/nobootmem.c +++ b/mm/nobootmem.c @@ -82,8 +82,7 @@ void __init free_bootmem_late(unsigned long addr, unsigned long size) static void __init __free_pages_memory(unsigned long start, unsigned long end) { - int i; - unsigned long start_aligned, end_aligned; + unsigned long i, start_aligned, end_aligned; int order = ilog2(BITS_PER_LONG); start_aligned = (start + (BITS_PER_LONG - 1)) & ~(BITS_PER_LONG - 1); -- cgit v1.1 From 17ff3c1fa4c7bd0c38d751715033023ebf32fc96 Mon Sep 17 00:00:00 2001 From: Bryan Wu Date: Thu, 10 May 2012 13:01:47 -0700 Subject: MAINTAINERS: add maintainer for LED subsystem Add Bryan Wu as the primary maintainer for drivers/leds Signed-off-by: Bryan Wu Acked-by: Richard Purdie Acked-by: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- MAINTAINERS | 1 + 1 file changed, 1 insertion(+) diff --git a/MAINTAINERS b/MAINTAINERS index 7071633..de4e280 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4034,6 +4034,7 @@ F: Documentation/scsi/53c700.txt F: drivers/scsi/53c700* LED SUBSYSTEM +M: Bryan Wu M: Richard Purdie S: Maintained F: drivers/leds/ -- cgit v1.1 From 1cab4201f00d06bd15c51cdfb12b233b588cdb61 Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Thu, 10 May 2012 22:57:11 +0200 Subject: parisc: add missing includes in asm/spinlock.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This leads to this errors: In file included from arch/parisc/include/asm/atomic.h:20:0, from include/linux/atomic.h:4, from arch/parisc/include/asm/bitops.h:56, from include/linux/bitops.h:22, from include/linux/kernel.h:19, from include/linux/sched.h:55, from arch/parisc/kernel/asm-offsets.c:31: arch/parisc/include/asm/spinlock.h: In function ‘arch_spin_is_locked’: arch/parisc/include/asm/spinlock.h:9:2: error: implicit declaration of function ‘__ldcw_align’ [-Werror=implicit-function-declaration] arch/parisc/include/asm/spinlock.h:9:29: warning: initialization makes pointer from integer without a cast [enabled by default] arch/parisc/include/asm/spinlock.h: In function ‘arch_spin_lock_flags’: arch/parisc/include/asm/spinlock.h:22:2: error: implicit declaration of function ‘mb’ [-Werror=implicit-function-declaration] arch/parisc/include/asm/spinlock.h:23:4: warning: assignment makes pointer from integer without a cast [enabled by default] arch/parisc/include/asm/spinlock.h:24:2: error: implicit declaration of function ‘__ldcw’ [-Werror=implicit-function-declaration] Signed-off-by: Rolf Eike Beer Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/spinlock.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/parisc/include/asm/spinlock.h b/arch/parisc/include/asm/spinlock.h index 804aa28..3516e0b 100644 --- a/arch/parisc/include/asm/spinlock.h +++ b/arch/parisc/include/asm/spinlock.h @@ -1,6 +1,8 @@ #ifndef __ASM_SPINLOCK_H #define __ASM_SPINLOCK_H +#include +#include #include #include -- cgit v1.1 From 25fe853d2ce5cad4115a211c568b430b1e4080bc Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Thu, 10 May 2012 23:01:40 +0200 Subject: parisc: add missing forward declarations in asm/hardware.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes this warnings: In file included from arch/parisc/include/asm/processor.h:15:0, from arch/parisc/include/asm/spinlock.h:4, from arch/parisc/include/asm/atomic.h:20, from include/linux/atomic.h:4, from arch/parisc/include/asm/bitops.h:11, from include/linux/bitops.h:22, from include/linux/kernel.h:19, from include/linux/sched.h:55, from arch/parisc/kernel/asm-offsets.c:31: arch/parisc/include/asm/hardware.h:106:10: warning: ‘struct hardware_path’ declared inside parameter list [enabled by default] arch/parisc/include/asm/hardware.h:106:10: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] arch/parisc/include/asm/hardware.h:116:59: warning: ‘struct hardware_path’ declared inside parameter list [enabled by default] arch/parisc/include/asm/hardware.h:118:47: warning: ‘struct hardware_path’ declared inside parameter list [enabled by default] arch/parisc/include/asm/hardware.h:119:57: warning: ‘struct hardware_path’ declared inside parameter list [enabled by default] Signed-off-by: Rolf Eike Beer Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/hardware.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/parisc/include/asm/hardware.h b/arch/parisc/include/asm/hardware.h index 4e96268..036e703 100644 --- a/arch/parisc/include/asm/hardware.h +++ b/arch/parisc/include/asm/hardware.h @@ -95,12 +95,14 @@ struct bc_module { #define HPHW_MC 15 #define HPHW_FAULTY 31 +struct parisc_device_id; /* hardware.c: */ extern const char *parisc_hardware_description(struct parisc_device_id *id); extern enum cpu_type parisc_get_cpu_type(unsigned long hversion); struct pci_dev; +struct hardware_path; /* drivers.c: */ extern struct parisc_device *alloc_pa_dev(unsigned long hpa, -- cgit v1.1 From 6eb608f554e79b89100b82fb8eea558a8d6e279b Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Thu, 10 May 2012 23:03:26 +0200 Subject: parisc: drop include of asm/pdc.h from asm/hardware.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It seems none of the symbols defined by pdc.h is needed, but it introduces an include loop causing compile errors: In file included from arch/parisc/include/asm/spinlock.h:4:0, from arch/parisc/include/asm/atomic.h:20, from include/linux/atomic.h:4, from arch/parisc/include/asm/bitops.h:56, from include/linux/bitops.h:35, from include/asm-generic/getorder.h:7, from arch/parisc/include/asm/page.h:162, from arch/parisc/include/asm/pdc.h:346, from arch/parisc/include/asm/hardware.h:5, from arch/parisc/kernel/hardware.c:30: arch/parisc/include/asm/processor.h:74:16: error: field ‘cpu_type’ has incomplete type arch/parisc/include/asm/processor.h:77:20: error: field ‘model’ has incomplete type arch/parisc/include/asm/processor.h: In function ‘parisc_requires_coherency’: arch/parisc/include/asm/processor.h:349:36: error: ‘mako’ undeclared (first use in this function) arch/parisc/include/asm/processor.h:349:36: note: each undeclared identifier is reported only once for each function it appears in arch/parisc/include/asm/processor.h:350:30: error: ‘mako2’ undeclared (first use in this function) Signed-off-by: Rolf Eike Beer Acked-by: Grant Grundler Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/hardware.h | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/parisc/include/asm/hardware.h b/arch/parisc/include/asm/hardware.h index 036e703..d1d864b 100644 --- a/arch/parisc/include/asm/hardware.h +++ b/arch/parisc/include/asm/hardware.h @@ -2,7 +2,6 @@ #define _PARISC_HARDWARE_H #include -#include #define HWTYPE_ANY_ID PA_HWTYPE_ANY_ID #define HVERSION_ANY_ID PA_HVERSION_ANY_ID -- cgit v1.1 From 9b05b1ec40bf6b1b20493617461e97c6a5d55403 Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Thu, 10 May 2012 23:07:16 +0200 Subject: parisc: add missing include of asm/page.h to asm/pgtable.h Fixes these errors: In file included from arch/parisc/include/asm/io.h:5:0, from include/linux/io.h:22, from include/linux/pci.h:54, from arch/parisc/kernel/setup.c:35: arch/parisc/include/asm/pgtable.h:92:6: warning: "PAGE_SHIFT" is not defined [-Wundef] arch/parisc/include/asm/pgtable.h:92:6: warning: "PAGE_SHIFT" is not defined [-Wundef] arch/parisc/include/asm/pgtable.h:92:6: warning: "BITS_PER_PTE_ENTRY" is not defined [-Wundef] Signed-off-by: Rolf Eike Beer Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/pgtable.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h index 22dadeb..ee99f23 100644 --- a/arch/parisc/include/asm/pgtable.h +++ b/arch/parisc/include/asm/pgtable.h @@ -44,6 +44,8 @@ struct vm_area_struct; #endif /* !__ASSEMBLY__ */ +#include + #define pte_ERROR(e) \ printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e)) #define pmd_ERROR(e) \ -- cgit v1.1 From 4a8a0788a36c923a0229beae5e88d9849e359db5 Mon Sep 17 00:00:00 2001 From: Rolf Eike Beer Date: Thu, 10 May 2012 23:08:17 +0200 Subject: parisc: move definition of PAGE0 to asm/page.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This was defined in asm/pdc.h which needs to include asm/page.h for __PAGE_OFFSET. This leads to an include loop so that page.h eventually will include pdc.h again. While this is no problem because of header guards, it is a problem because some symbols may be undefined. Such an error is this: In file included from include/linux/bitops.h:35:0, from include/asm-generic/getorder.h:7, from arch/parisc/include/asm/page.h:162, from arch/parisc/include/asm/pdc.h:346, from arch/parisc/include/asm/processor.h:16, from arch/parisc/include/asm/spinlock.h:6, from arch/parisc/include/asm/atomic.h:20, from include/linux/atomic.h:4, from include/linux/sysfs.h:20, from include/linux/kobject.h:21, from include/linux/device.h:17, from include/linux/eisa.h:5, from arch/parisc/kernel/pci.c:11: arch/parisc/include/asm/bitops.h: In function ‘set_bit’: arch/parisc/include/asm/bitops.h:82:2: error: implicit declaration of function ‘_atomic_spin_lock_irqsave’ [-Werror=implicit-function-declaration] arch/parisc/include/asm/bitops.h:84:2: error: implicit declaration of function ‘_atomic_spin_unlock_irqrestore’ [-Werror=implicit-function-declaration] Signed-off-by: Rolf Eike Beer Signed-off-by: Linus Torvalds --- arch/parisc/include/asm/page.h | 6 ++++++ arch/parisc/include/asm/pdc.h | 7 ------- arch/parisc/kernel/pdc_cons.c | 1 + arch/parisc/kernel/time.c | 1 + drivers/parisc/sba_iommu.c | 1 + drivers/video/console/sticore.c | 2 ++ 6 files changed, 11 insertions(+), 7 deletions(-) diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h index a84cc1f..4e0e7db 100644 --- a/arch/parisc/include/asm/page.h +++ b/arch/parisc/include/asm/page.h @@ -160,5 +160,11 @@ extern int npmem_ranges; #include #include +#include + +#define PAGE0 ((struct zeropage *)__PAGE_OFFSET) + +/* DEFINITION OF THE ZERO-PAGE (PAG0) */ +/* based on work by Jason Eckhardt (jason@equator.com) */ #endif /* _PARISC_PAGE_H */ diff --git a/arch/parisc/include/asm/pdc.h b/arch/parisc/include/asm/pdc.h index 4ca510b..7f0f2d2 100644 --- a/arch/parisc/include/asm/pdc.h +++ b/arch/parisc/include/asm/pdc.h @@ -343,8 +343,6 @@ #ifdef __KERNEL__ -#include /* for __PAGE_OFFSET */ - extern int pdc_type; /* Values for pdc_type */ @@ -677,11 +675,6 @@ static inline char * os_id_to_string(u16 os_id) { #endif /* __KERNEL__ */ -#define PAGE0 ((struct zeropage *)__PAGE_OFFSET) - -/* DEFINITION OF THE ZERO-PAGE (PAG0) */ -/* based on work by Jason Eckhardt (jason@equator.com) */ - /* flags of the device_path */ #define PF_AUTOBOOT 0x80 #define PF_AUTOSEARCH 0x40 diff --git a/arch/parisc/kernel/pdc_cons.c b/arch/parisc/kernel/pdc_cons.c index 0b33933..47341aa 100644 --- a/arch/parisc/kernel/pdc_cons.c +++ b/arch/parisc/kernel/pdc_cons.c @@ -50,6 +50,7 @@ #include #include #include +#include /* for PAGE0 */ #include /* for iodc_call() proto and friends */ static DEFINE_SPINLOCK(pdc_console_lock); diff --git a/arch/parisc/kernel/time.c b/arch/parisc/kernel/time.c index 7c07743..70e105d 100644 --- a/arch/parisc/kernel/time.c +++ b/arch/parisc/kernel/time.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 8644d53..42cfcd9 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -44,6 +44,7 @@ #include #include /* for proc_mckinley_root */ #include /* for proc_runway_root */ +#include /* for PAGE0 */ #include /* for PDC_MODEL_* */ #include /* for is_pdc_pat() */ #include diff --git a/drivers/video/console/sticore.c b/drivers/video/console/sticore.c index 6468a29..39571f9 100644 --- a/drivers/video/console/sticore.c +++ b/drivers/video/console/sticore.c @@ -22,7 +22,9 @@ #include #include +#include #include +#include #include #include -- cgit v1.1 From dccd9ecc374462e5d6a5b8f8110415a86c2213d8 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 10 May 2012 22:16:32 -0400 Subject: ipv4: Do not use dead fib_info entries. Due to RCU lookups and RCU based release, fib_info objects can be found during lookup which have fi->fib_dead set. We must ignore these entries, otherwise we risk dereferencing the parts of the entry which are being torn down. Reported-by: Yevgen Pronenko Signed-off-by: David S. Miller --- net/ipv4/fib_trie.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index bce36f1..30b88d7 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1370,6 +1370,8 @@ static int check_leaf(struct fib_table *tb, struct trie *t, struct leaf *l, if (fa->fa_tos && fa->fa_tos != flp->flowi4_tos) continue; + if (fi->fib_dead) + continue; if (fa->fa_info->fib_scope < flp->flowi4_scope) continue; fib_alias_accessed(fa); -- cgit v1.1 From cfb8c3aa59302636c69890be10b2ef23a7ca83b2 Mon Sep 17 00:00:00 2001 From: Benjamin Poirier Date: Thu, 10 May 2012 15:38:37 +0000 Subject: igb: fix rtnl race in PM resume path Since the caller (PM resume code) is not the one holding rtnl, when taking the 'else' branch rtnl may be released at any moment, thereby defeating the whole purpose of this code block. Signed-off-by: Benjamin Poirier Tested-by: Jeff Pieper Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/igb/igb_main.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index d223500..8683ca4 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -1111,9 +1111,12 @@ msi_only: adapter->flags |= IGB_FLAG_HAS_MSI; out: /* Notify the stack of the (possibly) reduced queue counts. */ + rtnl_lock(); netif_set_real_num_tx_queues(adapter->netdev, adapter->num_tx_queues); - return netif_set_real_num_rx_queues(adapter->netdev, - adapter->num_rx_queues); + err = netif_set_real_num_rx_queues(adapter->netdev, + adapter->num_rx_queues); + rtnl_unlock(); + return err; } /** @@ -6796,18 +6799,7 @@ static int igb_resume(struct device *dev) pci_enable_wake(pdev, PCI_D3hot, 0); pci_enable_wake(pdev, PCI_D3cold, 0); - if (!rtnl_is_locked()) { - /* - * shut up ASSERT_RTNL() warning in - * netif_set_real_num_tx/rx_queues. - */ - rtnl_lock(); - err = igb_init_interrupt_scheme(adapter); - rtnl_unlock(); - } else { - err = igb_init_interrupt_scheme(adapter); - } - if (err) { + if (igb_init_interrupt_scheme(adapter)) { dev_err(&pdev->dev, "Unable to allocate memory for queues\n"); return -ENOMEM; } -- cgit v1.1 From 380ec964bc19f865af70c0339dff1cb75dc4f8f2 Mon Sep 17 00:00:00 2001 From: Thadeu Lima de Souza Cascardo Date: Thu, 10 May 2012 04:00:53 +0000 Subject: ehea: fix losing of NEQ events when one event occurred early The NEQ interrupt is only triggered when there was no previous pending interrupt. If we request irq handling after an interrupt has occurred, we will never get an interrupt until we call H_RESET_EVENTS. Events seem to be cleared when we first register the NEQ. So, when we requested irq handling right after registering it, a possible race with an interrupt was much less likely. Now, there is a chance we may lose this race and never get any events. The fix here is to poll and acknowledge any events that might have happened right after registering the irq handler. Signed-off-by: Thadeu Lima de Souza Cascardo Signed-off-by: David S. Miller --- drivers/net/ethernet/ibm/ehea/ehea_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/ibm/ehea/ehea_main.c b/drivers/net/ethernet/ibm/ehea/ehea_main.c index c9069a2..f4d2da0 100644 --- a/drivers/net/ethernet/ibm/ehea/ehea_main.c +++ b/drivers/net/ethernet/ibm/ehea/ehea_main.c @@ -3335,6 +3335,8 @@ static int __devinit ehea_probe_adapter(struct platform_device *dev, goto out_shutdown_ports; } + /* Handle any events that might be pending. */ + tasklet_hi_schedule(&adapter->neq_tasklet); ret = 0; goto out; -- cgit v1.1 From 59b9997baba5242997ddc7bd96b1391f5275a5a4 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 10 May 2012 23:03:34 -0400 Subject: Revert "net: maintain namespace isolation between vlan and real device" This reverts commit 8a83a00b0735190384a348156837918271034144. It causes regressions for S390 devices, because it does an unconditional DST drop on SKBs for vlans and the QETH device needs the neighbour entry hung off the DST for certain things on transmit. Arnd can't remember exactly why he even needed this change. Conflicts: drivers/net/macvlan.c net/8021q/vlan_dev.c net/core/dev.c Signed-off-by: David S. Miller --- drivers/net/macvlan.c | 2 +- include/linux/netdevice.h | 9 --------- net/8021q/vlan_dev.c | 2 +- net/core/dev.c | 36 +++++------------------------------- 4 files changed, 7 insertions(+), 42 deletions(-) diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c index f975afd..025367a 100644 --- a/drivers/net/macvlan.c +++ b/drivers/net/macvlan.c @@ -259,7 +259,7 @@ static int macvlan_queue_xmit(struct sk_buff *skb, struct net_device *dev) xmit_world: skb->ip_summed = ip_summed; - skb_set_dev(skb, vlan->lowerdev); + skb->dev = vlan->lowerdev; return dev_queue_xmit(skb); } diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 5cbaa20..33900a5 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -1403,15 +1403,6 @@ static inline bool netdev_uses_dsa_tags(struct net_device *dev) return 0; } -#ifndef CONFIG_NET_NS -static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev) -{ - skb->dev = dev; -} -#else /* CONFIG_NET_NS */ -void skb_set_dev(struct sk_buff *skb, struct net_device *dev); -#endif - static inline bool netdev_uses_trailer_tags(struct net_device *dev) { #ifdef CONFIG_NET_DSA_TAG_TRAILER diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 9988d4a..9757c193 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -157,7 +157,7 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, skb = __vlan_hwaccel_put_tag(skb, vlan_tci); } - skb_set_dev(skb, vlan_dev_priv(dev)->real_dev); + skb->dev = vlan_dev_priv(dev)->real_dev; len = skb->len; if (netpoll_tx_running(dev)) return skb->dev->netdev_ops->ndo_start_xmit(skb, skb->dev); diff --git a/net/core/dev.c b/net/core/dev.c index 9bb8f87..99e1d75 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1617,10 +1617,14 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb) return NET_RX_DROP; } skb->skb_iif = 0; - skb_set_dev(skb, dev); + skb->dev = dev; + skb_dst_drop(skb); skb->tstamp.tv64 = 0; skb->pkt_type = PACKET_HOST; skb->protocol = eth_type_trans(skb, dev); + skb->mark = 0; + secpath_reset(skb); + nf_reset(skb); return netif_rx(skb); } EXPORT_SYMBOL_GPL(dev_forward_skb); @@ -1869,36 +1873,6 @@ void netif_device_attach(struct net_device *dev) } EXPORT_SYMBOL(netif_device_attach); -/** - * skb_dev_set -- assign a new device to a buffer - * @skb: buffer for the new device - * @dev: network device - * - * If an skb is owned by a device already, we have to reset - * all data private to the namespace a device belongs to - * before assigning it a new device. - */ -#ifdef CONFIG_NET_NS -void skb_set_dev(struct sk_buff *skb, struct net_device *dev) -{ - skb_dst_drop(skb); - if (skb->dev && !net_eq(dev_net(skb->dev), dev_net(dev))) { - secpath_reset(skb); - nf_reset(skb); - skb_init_secmark(skb); - skb->mark = 0; - skb->priority = 0; - skb->nf_trace = 0; - skb->ipvs_property = 0; -#ifdef CONFIG_NET_SCHED - skb->tc_index = 0; -#endif - } - skb->dev = dev; -} -EXPORT_SYMBOL(skb_set_dev); -#endif /* CONFIG_NET_NS */ - static void skb_warn_bad_offload(const struct sk_buff *skb) { static const netdev_features_t null_features = 0; -- cgit v1.1 From c57b54684060c8aced64a5b78ff69ff289af97b9 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 9 May 2012 13:29:51 +0000 Subject: pktgen: fix crash at module unload commit 7d3d43dab4e9 (net: In unregister_netdevice_notifier unregister the netdevices.) makes pktgen crashing at module unload. [ 296.820578] BUG: spinlock bad magic on CPU#6, rmmod/3267 [ 296.820719] lock: ffff880310c38000, .magic: ffff8803, .owner: /-1, .owner_cpu: -1 [ 296.820943] Pid: 3267, comm: rmmod Not tainted 3.4.0-rc5+ #254 [ 296.821079] Call Trace: [ 296.821211] [] spin_dump+0x8a/0x8f [ 296.821345] [] spin_bug+0x21/0x26 [ 296.821507] [] do_raw_spin_lock+0x131/0x140 [ 296.821648] [] _raw_spin_lock+0x1e/0x20 [ 296.821786] [] __pktgen_NN_threads+0x4d/0x140 [pktgen] [ 296.821928] [] pktgen_device_event+0x10d/0x1e0 [pktgen] [ 296.822073] [] unregister_netdevice_notifier+0x7f/0x100 [ 296.822216] [] pg_cleanup+0x48/0x73 [pktgen] [ 296.822357] [] sys_delete_module+0x17e/0x2a0 [ 296.822502] [] system_call_fastpath+0x16/0x1b Hold the pktgen_thread_lock while splicing pktgen_threads, and test pktgen_exiting in pktgen_device_event() to make unload faster. Signed-off-by: Eric Dumazet Cc: Eric W. Biederman Signed-off-by: David S. Miller --- net/core/pktgen.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/net/core/pktgen.c b/net/core/pktgen.c index 4d8ce93..77a5998 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -1931,7 +1931,7 @@ static int pktgen_device_event(struct notifier_block *unused, { struct net_device *dev = ptr; - if (!net_eq(dev_net(dev), &init_net)) + if (!net_eq(dev_net(dev), &init_net) || pktgen_exiting) return NOTIFY_DONE; /* It is OK that we do not hold the group lock right now, @@ -3755,12 +3755,18 @@ static void __exit pg_cleanup(void) { struct pktgen_thread *t; struct list_head *q, *n; + struct list_head list; /* Stop all interfaces & threads */ pktgen_exiting = true; - list_for_each_safe(q, n, &pktgen_threads) { + mutex_lock(&pktgen_thread_lock); + list_splice(&list, &pktgen_threads); + mutex_unlock(&pktgen_thread_lock); + + list_for_each_safe(q, n, &list) { t = list_entry(q, struct pktgen_thread, th_list); + list_del(&t->th_list); kthread_stop(t->tsk); kfree(t); } -- cgit v1.1 From e0268868ba064980488fc8c194db3d8e9fb2959c Mon Sep 17 00:00:00 2001 From: Nicolas Dichtel Date: Fri, 4 May 2012 05:24:54 +0000 Subject: sctp: check cached dst before using it dst_check() will take care of SA (and obsolete field), hence IPsec rekeying scenario is taken into account. Signed-off-by: Nicolas Dichtel Acked-by: Vlad Yaseivch Signed-off-by: David S. Miller --- include/net/sctp/sctp.h | 13 +++++++++++++ net/sctp/output.c | 4 +--- net/sctp/transport.c | 17 ----------------- 3 files changed, 14 insertions(+), 20 deletions(-) diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 6ee44b2..a2ef814 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -704,4 +704,17 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr) addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff); } +/* The cookie is always 0 since this is how it's used in the + * pmtu code. + */ +static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) +{ + if (t->dst && !dst_check(t->dst, 0)) { + dst_release(t->dst); + t->dst = NULL; + } + + return t->dst; +} + #endif /* __net_sctp_h__ */ diff --git a/net/sctp/output.c b/net/sctp/output.c index 817174e..8fc4dcd 100644 --- a/net/sctp/output.c +++ b/net/sctp/output.c @@ -377,9 +377,7 @@ int sctp_packet_transmit(struct sctp_packet *packet) */ skb_set_owner_w(nskb, sk); - /* The 'obsolete' field of dst is set to 2 when a dst is freed. */ - if (!dst || (dst->obsolete > 1)) { - dst_release(dst); + if (!sctp_transport_dst_check(tp)) { sctp_transport_route(tp, NULL, sctp_sk(sk)); if (asoc && (asoc->param_flags & SPP_PMTUD_ENABLE)) { sctp_assoc_sync_pmtu(asoc); diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 3889330..b026ba0 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -226,23 +226,6 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk) transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT; } -/* this is a complete rip-off from __sk_dst_check - * the cookie is always 0 since this is how it's used in the - * pmtu code - */ -static struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) -{ - struct dst_entry *dst = t->dst; - - if (dst && dst->obsolete && dst->ops->check(dst, 0) == NULL) { - dst_release(t->dst); - t->dst = NULL; - return NULL; - } - - return dst; -} - void sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu) { struct dst_entry *dst; -- cgit v1.1 From 38bf1953987c1735f3c9140fca762949a8cae507 Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Fri, 4 May 2012 11:34:03 +0000 Subject: connector/userns: replace netlink uses of cap_raised() with capable() In 2009 Philip Reiser notied that a few users of netlink connector interface needed a capability check and added the idiom cap_raised(nsp->eff_cap, CAP_SYS_ADMIN) to a few of them, on the premise that netlink was asynchronous. In 2011 Patrick McHardy noticed we were being silly because netlink is synchronous and removed eff_cap from the netlink_skb_params and changed the idiom to cap_raised(current_cap(), CAP_SYS_ADMIN). Looking at those spots with a fresh eye we should be calling capable(CAP_SYS_ADMIN). The only reason I can see for not calling capable is that it once appeared we were not in the same task as the caller which would have made calling capable() impossible. In the initial user_namespace the only difference between between cap_raised(current_cap(), CAP_SYS_ADMIN) and capable(CAP_SYS_ADMIN) are a few sanity checks and the fact that capable(CAP_SYS_ADMIN) sets PF_SUPERPRIV if we use the capability. Since we are going to be using root privilege setting PF_SUPERPRIV seems the right thing to do. The motivation for this that patch is that in a child user namespace cap_raised(current_cap(),...) tests your capabilities with respect to that child user namespace not capabilities in the initial user namespace and thus will allow processes that should be unprivielged to use the kernel services that are only protected with cap_raised(current_cap(),..). To fix possible user_namespace issues and to just clean up the code replace cap_raised(current_cap(), CAP_SYS_ADMIN) with capable(CAP_SYS_ADMIN). Signed-off-by: Eric W. Biederman Cc: Patrick McHardy Cc: Philipp Reisner Acked-by: Serge E. Hallyn Acked-by: Andrew G. Morgan Cc: Vasiliy Kulikov Cc: David Howells Reviewed-by: James Morris Cc: David Miller Signed-off-by: Andrew Morton Signed-off-by: David S. Miller --- drivers/block/drbd/drbd_nl.c | 2 +- drivers/md/dm-log-userspace-transfer.c | 2 +- drivers/video/uvesafb.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index abfaaca..946166e 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2297,7 +2297,7 @@ static void drbd_connector_callback(struct cn_msg *req, struct netlink_skb_parms return; } - if (!cap_raised(current_cap(), CAP_SYS_ADMIN)) { + if (!capable(CAP_SYS_ADMIN)) { retcode = ERR_PERM; goto fail; } diff --git a/drivers/md/dm-log-userspace-transfer.c b/drivers/md/dm-log-userspace-transfer.c index 1f23e04..08d9a20 100644 --- a/drivers/md/dm-log-userspace-transfer.c +++ b/drivers/md/dm-log-userspace-transfer.c @@ -134,7 +134,7 @@ static void cn_ulog_callback(struct cn_msg *msg, struct netlink_skb_parms *nsp) { struct dm_ulog_request *tfr = (struct dm_ulog_request *)(msg + 1); - if (!cap_raised(current_cap(), CAP_SYS_ADMIN)) + if (!capable(CAP_SYS_ADMIN)) return; spin_lock(&receiving_list_lock); diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c index 26e83d7..b0e2a42 100644 --- a/drivers/video/uvesafb.c +++ b/drivers/video/uvesafb.c @@ -73,7 +73,7 @@ static void uvesafb_cn_callback(struct cn_msg *msg, struct netlink_skb_parms *ns struct uvesafb_task *utask; struct uvesafb_ktask *task; - if (!cap_raised(current_cap(), CAP_SYS_ADMIN)) + if (!capable(CAP_SYS_ADMIN)) return; if (msg->seq >= UVESAFB_TASKS_MAX) -- cgit v1.1 From 13a8e0c8cdb43982372bd6c65fb26839c8fd8ce9 Mon Sep 17 00:00:00 2001 From: Jiri Bohac Date: Wed, 9 May 2012 01:01:40 +0000 Subject: bonding: don't increase rx_dropped after processing LACPDUs Since commit 3aba891d, bonding processes LACP frames (802.3ad mode) with bond_handle_frame(). Currently a copy of the skb is made and the original is left to be processed by other rx_handlers and the rest of the network stack by returning RX_HANDLER_ANOTHER. As there is no protocol handler for PKT_TYPE_LACPDU, the frame is dropped and dev->rx_dropped increased. Fix this by making bond_handle_frame() return RX_HANDLER_CONSUMED if bonding has processed the LACP frame. Signed-off-by: Jiri Bohac Signed-off-by: David S. Miller --- drivers/net/bonding/bond_3ad.c | 18 ++++++++++++------ drivers/net/bonding/bond_3ad.h | 2 +- drivers/net/bonding/bond_main.c | 16 +++++++++++----- 3 files changed, 24 insertions(+), 12 deletions(-) diff --git a/drivers/net/bonding/bond_3ad.c b/drivers/net/bonding/bond_3ad.c index 793b001..3463b46 100644 --- a/drivers/net/bonding/bond_3ad.c +++ b/drivers/net/bonding/bond_3ad.c @@ -2173,9 +2173,10 @@ re_arm: * received frames (loopback). Since only the payload is given to this * function, it check for loopback. */ -static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u16 length) +static int bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u16 length) { struct port *port; + int ret = RX_HANDLER_ANOTHER; if (length >= sizeof(struct lacpdu)) { @@ -2184,11 +2185,12 @@ static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u if (!port->slave) { pr_warning("%s: Warning: port of slave %s is uninitialized\n", slave->dev->name, slave->dev->master->name); - return; + return ret; } switch (lacpdu->subtype) { case AD_TYPE_LACPDU: + ret = RX_HANDLER_CONSUMED; pr_debug("Received LACPDU on port %d\n", port->actor_port_number); /* Protect against concurrent state machines */ @@ -2198,6 +2200,7 @@ static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u break; case AD_TYPE_MARKER: + ret = RX_HANDLER_CONSUMED; // No need to convert fields to Little Endian since we don't use the marker's fields. switch (((struct bond_marker *)lacpdu)->tlv_type) { @@ -2219,6 +2222,7 @@ static void bond_3ad_rx_indication(struct lacpdu *lacpdu, struct slave *slave, u } } } + return ret; } /** @@ -2456,18 +2460,20 @@ out: return NETDEV_TX_OK; } -void bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, +int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, struct slave *slave) { + int ret = RX_HANDLER_ANOTHER; if (skb->protocol != PKT_TYPE_LACPDU) - return; + return ret; if (!pskb_may_pull(skb, sizeof(struct lacpdu))) - return; + return ret; read_lock(&bond->lock); - bond_3ad_rx_indication((struct lacpdu *) skb->data, slave, skb->len); + ret = bond_3ad_rx_indication((struct lacpdu *) skb->data, slave, skb->len); read_unlock(&bond->lock); + return ret; } /* diff --git a/drivers/net/bonding/bond_3ad.h b/drivers/net/bonding/bond_3ad.h index 235b2cc..5ee7e3c 100644 --- a/drivers/net/bonding/bond_3ad.h +++ b/drivers/net/bonding/bond_3ad.h @@ -274,7 +274,7 @@ void bond_3ad_adapter_duplex_changed(struct slave *slave); void bond_3ad_handle_link_change(struct slave *slave, char link); int bond_3ad_get_active_agg_info(struct bonding *bond, struct ad_info *ad_info); int bond_3ad_xmit_xor(struct sk_buff *skb, struct net_device *dev); -void bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, +int bond_3ad_lacpdu_recv(struct sk_buff *skb, struct bonding *bond, struct slave *slave); int bond_3ad_set_carrier(struct bonding *bond); void bond_3ad_update_lacp_rate(struct bonding *bond); diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 62d2409..bc13b3d 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1444,8 +1444,9 @@ static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) struct sk_buff *skb = *pskb; struct slave *slave; struct bonding *bond; - void (*recv_probe)(struct sk_buff *, struct bonding *, + int (*recv_probe)(struct sk_buff *, struct bonding *, struct slave *); + int ret = RX_HANDLER_ANOTHER; skb = skb_share_check(skb, GFP_ATOMIC); if (unlikely(!skb)) @@ -1464,8 +1465,12 @@ static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) struct sk_buff *nskb = skb_clone(skb, GFP_ATOMIC); if (likely(nskb)) { - recv_probe(nskb, bond, slave); + ret = recv_probe(nskb, bond, slave); dev_kfree_skb(nskb); + if (ret == RX_HANDLER_CONSUMED) { + consume_skb(skb); + return ret; + } } } @@ -1487,7 +1492,7 @@ static rx_handler_result_t bond_handle_frame(struct sk_buff **pskb) memcpy(eth_hdr(skb)->h_dest, bond->dev->dev_addr, ETH_ALEN); } - return RX_HANDLER_ANOTHER; + return ret; } /* enslave device to bond device */ @@ -2723,7 +2728,7 @@ static void bond_validate_arp(struct bonding *bond, struct slave *slave, __be32 } } -static void bond_arp_rcv(struct sk_buff *skb, struct bonding *bond, +static int bond_arp_rcv(struct sk_buff *skb, struct bonding *bond, struct slave *slave) { struct arphdr *arp; @@ -2731,7 +2736,7 @@ static void bond_arp_rcv(struct sk_buff *skb, struct bonding *bond, __be32 sip, tip; if (skb->protocol != __cpu_to_be16(ETH_P_ARP)) - return; + return RX_HANDLER_ANOTHER; read_lock(&bond->lock); @@ -2776,6 +2781,7 @@ static void bond_arp_rcv(struct sk_buff *skb, struct bonding *bond, out_unlock: read_unlock(&bond->lock); + return RX_HANDLER_ANOTHER; } /* -- cgit v1.1 From 1b76b02f15c70d5f392ee2e231fbd20a26063a77 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 11 May 2012 01:00:07 -0700 Subject: mm: raise MemFree by reverting percpu_pagelist_fraction to 0 Why is there less MemFree than there used to be? It perturbed a test, so I've just been bisecting linux-next, and now find the offender went upstream yesterday. Commit 93278814d359 "mm: fix division by 0 in percpu_pagelist_fraction()" mistakenly initialized percpu_pagelist_fraction to the sysctl's minimum 8, which leaves 1/8th of memory on percpu lists (on each cpu??); but most of us expect it to be left unset at 0 (and it's not then used as a divisor). MemTotal: 8061476kB 8061476kB 8061476kB 8061476kB 8061476kB 8061476kB Repetitive test with percpu_pagelist_fraction 8: MemFree: 6948420kB 6237172kB 6949696kB 6840692kB 6949048kB 6862984kB Same test with percpu_pagelist_fraction back to 0: MemFree: 7945000kB 7944908kB 7948568kB 7949060kB 7948796kB 7948812kB Signed-off-by: Hugh Dickins [ We really should fix the crazy sysctl interface too, but that's a separate thing - Linus ] Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b21b3db..918330f 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -105,7 +105,7 @@ unsigned long totalreserve_pages __read_mostly; */ unsigned long dirty_balance_reserve __read_mostly; -int percpu_pagelist_fraction = 8; +int percpu_pagelist_fraction; gfp_t gfp_allowed_mask __read_mostly = GFP_BOOT_MASK; #ifdef CONFIG_PM_SLEEP -- cgit v1.1 From cfebf8f42f47327fa54cf05c19b98f4bd5236a26 Mon Sep 17 00:00:00 2001 From: Nicholas Bellinger Date: Thu, 10 May 2012 22:05:49 -0700 Subject: target: Drop incorrect se_lun_acl release for dynamic -> explict ACL conversion This patch removes some potentially problematic legacy code within core_clear_initiator_node_from_tpg() that was originally intended to release left over se_lun_acl setup during dynamic NodeACL+MappedLUN generate when running with TPG demo-mode operation. Since we now only ever expect to allocate and release se_lun_acl from within target_core_fabric_configfs.c:target_fabric_make_mappedlun() and target_fabric_drop_mappedlun() context respectively, this code for demo-mode release is incorrect and needs to be removed. Cc: Christoph Hellwig Cc: Andy Grover Cc: Signed-off-by: Nicholas Bellinger --- drivers/target/target_core_tpg.c | 22 ---------------------- 1 file changed, 22 deletions(-) diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 70c3ffb..e320ec2 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -60,7 +60,6 @@ static void core_clear_initiator_node_from_tpg( int i; struct se_dev_entry *deve; struct se_lun *lun; - struct se_lun_acl *acl, *acl_tmp; spin_lock_irq(&nacl->device_list_lock); for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { @@ -81,28 +80,7 @@ static void core_clear_initiator_node_from_tpg( core_update_device_list_for_node(lun, NULL, deve->mapped_lun, TRANSPORT_LUNFLAGS_NO_ACCESS, nacl, tpg, 0); - spin_lock(&lun->lun_acl_lock); - list_for_each_entry_safe(acl, acl_tmp, - &lun->lun_acl_list, lacl_list) { - if (!strcmp(acl->initiatorname, nacl->initiatorname) && - (acl->mapped_lun == deve->mapped_lun)) - break; - } - - if (!acl) { - pr_err("Unable to locate struct se_lun_acl for %s," - " mapped_lun: %u\n", nacl->initiatorname, - deve->mapped_lun); - spin_unlock(&lun->lun_acl_lock); - spin_lock_irq(&nacl->device_list_lock); - continue; - } - - list_del(&acl->lacl_list); - spin_unlock(&lun->lun_acl_lock); - spin_lock_irq(&nacl->device_list_lock); - kfree(acl); } spin_unlock_irq(&nacl->device_list_lock); } -- cgit v1.1 From c53cff5e42a06b81495983bd01741b9a954f11f0 Mon Sep 17 00:00:00 2001 From: Basil Gor Date: Thu, 3 May 2012 22:55:23 +0000 Subject: vhost-net: fix handle_rx buffer size Take vlan header length into account, when vlan id is stored as vlan_tci. Otherwise tagged packets coming from macvtap will be truncated. Signed-off-by: Basil Gor Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- drivers/vhost/net.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c index 1f21d2a..5c17010 100644 --- a/drivers/vhost/net.c +++ b/drivers/vhost/net.c @@ -24,6 +24,7 @@ #include #include #include +#include #include @@ -283,8 +284,12 @@ static int peek_head_len(struct sock *sk) spin_lock_irqsave(&sk->sk_receive_queue.lock, flags); head = skb_peek(&sk->sk_receive_queue); - if (likely(head)) + if (likely(head)) { len = head->len; + if (vlan_tx_tag_present(head)) + len += VLAN_HLEN; + } + spin_unlock_irqrestore(&sk->sk_receive_queue.lock, flags); return len; } -- cgit v1.1 From f09e2249c4f5c7c13261ec73f5a7807076af0c8e Mon Sep 17 00:00:00 2001 From: Basil Gor Date: Thu, 3 May 2012 22:55:24 +0000 Subject: macvtap: restore vlan header on user read Ethernet vlan header is not on the packet and kept in the skb->vlan_tci when it comes from lower dev. This patch inserts vlan header in user buffer during skb copy on user read. Signed-off-by: Basil Gor Acked-by: Michael S. Tsirkin Signed-off-by: David S. Miller --- drivers/net/macvtap.c | 43 ++++++++++++++++++++++++++++++++++++++----- 1 file changed, 38 insertions(+), 5 deletions(-) diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 0427c65..cb8fd50 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -1,5 +1,6 @@ #include #include +#include #include #include #include @@ -759,6 +760,8 @@ static ssize_t macvtap_put_user(struct macvtap_queue *q, struct macvlan_dev *vlan; int ret; int vnet_hdr_len = 0; + int vlan_offset = 0; + int copied; if (q->flags & IFF_VNET_HDR) { struct virtio_net_hdr vnet_hdr; @@ -773,18 +776,48 @@ static ssize_t macvtap_put_user(struct macvtap_queue *q, if (memcpy_toiovecend(iv, (void *)&vnet_hdr, 0, sizeof(vnet_hdr))) return -EFAULT; } + copied = vnet_hdr_len; + + if (!vlan_tx_tag_present(skb)) + len = min_t(int, skb->len, len); + else { + int copy; + struct { + __be16 h_vlan_proto; + __be16 h_vlan_TCI; + } veth; + veth.h_vlan_proto = htons(ETH_P_8021Q); + veth.h_vlan_TCI = htons(vlan_tx_tag_get(skb)); + + vlan_offset = offsetof(struct vlan_ethhdr, h_vlan_proto); + len = min_t(int, skb->len + VLAN_HLEN, len); + + copy = min_t(int, vlan_offset, len); + ret = skb_copy_datagram_const_iovec(skb, 0, iv, copied, copy); + len -= copy; + copied += copy; + if (ret || !len) + goto done; + + copy = min_t(int, sizeof(veth), len); + ret = memcpy_toiovecend(iv, (void *)&veth, copied, copy); + len -= copy; + copied += copy; + if (ret || !len) + goto done; + } - len = min_t(int, skb->len, len); - - ret = skb_copy_datagram_const_iovec(skb, 0, iv, vnet_hdr_len, len); + ret = skb_copy_datagram_const_iovec(skb, vlan_offset, iv, copied, len); + copied += len; +done: rcu_read_lock_bh(); vlan = rcu_dereference_bh(q->vlan); if (vlan) - macvlan_count_rx(vlan, len, ret == 0, 0); + macvlan_count_rx(vlan, copied - vnet_hdr_len, ret == 0, 0); rcu_read_unlock_bh(); - return ret ? ret : (len + vnet_hdr_len); + return ret ? ret : copied; } static ssize_t macvtap_do_read(struct macvtap_queue *q, struct kiocb *iocb, -- cgit v1.1 From 062e55e3960062fc2fb62a7274b4c253003eba73 Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Thu, 10 May 2012 12:51:30 +0000 Subject: ks8851: Update link status during link change interrupt If a link change interrupt comes in we just clear the interrupt and continue along without notifying the upper networking layers that the link has changed. Use the mii_check_link() function to update the link status whenever a link change interrupt occurs. Cc: Ben Dooks Signed-off-by: Stephen Boyd Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index f8dda00..5e313e9 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -618,10 +618,8 @@ static void ks8851_irq_work(struct work_struct *work) netif_dbg(ks, intr, ks->netdev, "%s: status 0x%04x\n", __func__, status); - if (status & IRQ_LCI) { - /* should do something about checking link status */ + if (status & IRQ_LCI) handled |= IRQ_LCI; - } if (status & IRQ_LDI) { u16 pmecr = ks8851_rdreg16(ks, KS_PMECR); @@ -684,6 +682,9 @@ static void ks8851_irq_work(struct work_struct *work) mutex_unlock(&ks->lock); + if (status & IRQ_LCI) + mii_check_link(&ks->mii); + if (status & IRQ_TXI) netif_wake_queue(ks->netdev); -- cgit v1.1 From 7c0482e3d055e5de056d3c693b821e39205b99ae Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 10 May 2012 16:12:38 +0000 Subject: powerpc/irq: Fix another case of lazy IRQ state getting out of sync So we have another case of paca->irq_happened getting out of sync with the HW irq state. This can happen when a perfmon interrupt occurs while soft disabled, as it will return to a soft disabled but hard enabled context while leaving a stale PACA_IRQ_HARD_DIS flag set. This patch fixes it, and also adds a test for the condition of those flags being out of sync in arch_local_irq_restore() when CONFIG_TRACE_IRQFLAGS is enabled. This helps catching those gremlins faster (and so far I can't seem see any anymore, so that's good news). Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/kernel/entry_64.S | 44 +++++++++++++++++++++++++++++------------- arch/powerpc/kernel/irq.c | 13 +++++++++++++ 2 files changed, 44 insertions(+), 13 deletions(-) diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index fc60150..ef2074c 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -588,23 +588,19 @@ _GLOBAL(ret_from_except_lite) fast_exc_return_irq: restore: /* - * This is the main kernel exit path, we first check if we - * have to change our interrupt state. + * This is the main kernel exit path. First we check if we + * are about to re-enable interrupts */ ld r5,SOFTE(r1) lbz r6,PACASOFTIRQEN(r13) - cmpwi cr1,r5,0 - cmpw cr0,r5,r6 - beq cr0,4f + cmpwi cr0,r5,0 + beq restore_irq_off - /* We do, handle disable first, which is easy */ - bne cr1,3f; - li r0,0 - stb r0,PACASOFTIRQEN(r13); - TRACE_DISABLE_INTS - b 4f + /* We are enabling, were we already enabled ? Yes, just return */ + cmpwi cr0,r6,1 + beq cr0,do_restore -3: /* + /* * We are about to soft-enable interrupts (we are hard disabled * at this point). We check if there's anything that needs to * be replayed first. @@ -626,7 +622,7 @@ restore_no_replay: /* * Final return path. BookE is handled in a different file */ -4: +do_restore: #ifdef CONFIG_PPC_BOOK3E b .exception_return_book3e #else @@ -700,6 +696,25 @@ fast_exception_return: #endif /* CONFIG_PPC_BOOK3E */ /* + * We are returning to a context with interrupts soft disabled. + * + * However, we may also about to hard enable, so we need to + * make sure that in this case, we also clear PACA_IRQ_HARD_DIS + * or that bit can get out of sync and bad things will happen + */ +restore_irq_off: + ld r3,_MSR(r1) + lbz r7,PACAIRQHAPPENED(r13) + andi. r0,r3,MSR_EE + beq 1f + rlwinm r7,r7,0,~PACA_IRQ_HARD_DIS + stb r7,PACAIRQHAPPENED(r13) +1: li r0,0 + stb r0,PACASOFTIRQEN(r13); + TRACE_DISABLE_INTS + b do_restore + + /* * Something did happen, check if a re-emit is needed * (this also clears paca->irq_happened) */ @@ -748,6 +763,9 @@ restore_check_irq_replay: #endif /* CONFIG_PPC_BOOK3E */ 1: b .ret_from_except /* What else to do here ? */ + + +3: do_work: #ifdef CONFIG_PREEMPT andi. r0,r3,MSR_PR /* Returning to user mode? */ diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index c6c6f3b..641da9e 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -229,6 +229,19 @@ notrace void arch_local_irq_restore(unsigned long en) */ if (unlikely(irq_happened != PACA_IRQ_HARD_DIS)) __hard_irq_disable(); +#ifdef CONFIG_TRACE_IRQFLAG + else { + /* + * We should already be hard disabled here. We had bugs + * where that wasn't the case so let's dbl check it and + * warn if we are wrong. Only do that when IRQ tracing + * is enabled as mfmsr() can be costly. + */ + if (WARN_ON(mfmsr() & MSR_EE)) + __hard_irq_disable(); + } +#endif /* CONFIG_TRACE_IRQFLAG */ + set_soft_enabled(0); /* -- cgit v1.1 From df9541a60af0985c3a756dc5f99b9253d2565a07 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 28 Apr 2012 10:13:45 +0200 Subject: gpio: pch9: Use proper flow type handlers Jean-Francois Dagenais reported: Configuring a gpio pin with the gpio-pch driver with "IRQF_TRIGGER_LOW | IRQF_ONESHOT" generates an interrupt storm for threaded ISR until the ISR thread actually gets to physically clear the interrupt on the triggering chip!! The immediate observable symptom is the high CPU usage for my ISR thread task and the interrupt count in /proc/interrupts incrementing radically. The driver is wrong in several ways: 1) Using handle_simple_irq() does not provide proper flow control handling. In the case of oneshot threaded handlers for the demultiplexed interrupts this results in an interrupt storm because the simple handler does not deal with masking/unmasking. Even without threaded oneshot handlers an interrupt storm for level type interrupts can easily be triggered when the interrupt is disabled and the interrupt line is activated from the device. 2) Acknowlegding the demultiplexed interrupt before calling the handler is wrong for level type interrupts. 3) The set_type function unconditionally enables the interrupt. It's supposed to set the type and nothing else. The unmasking is done by the core code. Move the acknowledge code into a separate function and add it to the demux irqchip callbacks. Remove the unconditional enabling from the set_type() callback and set the proper flow handlers depending on the selected type (level/edge). Reported-and-tested-by: Jean-Francois Dagenais Signed-off-by: Thomas Gleixner Signed-off-by: Grant Likely --- drivers/gpio/gpio-pch.c | 57 ++++++++++++++++++++++++------------------------- 1 file changed, 28 insertions(+), 29 deletions(-) diff --git a/drivers/gpio/gpio-pch.c b/drivers/gpio/gpio-pch.c index e8729cc..2cd958e 100644 --- a/drivers/gpio/gpio-pch.c +++ b/drivers/gpio/gpio-pch.c @@ -230,16 +230,12 @@ static void pch_gpio_setup(struct pch_gpio *chip) static int pch_irq_type(struct irq_data *d, unsigned int type) { - u32 im; - u32 __iomem *im_reg; - u32 ien; - u32 im_pos; - int ch; - unsigned long flags; - u32 val; - int irq = d->irq; struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); struct pch_gpio *chip = gc->private; + u32 im, im_pos, val; + u32 __iomem *im_reg; + unsigned long flags; + int ch, irq = d->irq; ch = irq - chip->irq_base; if (irq <= chip->irq_base + 7) { @@ -270,30 +266,22 @@ static int pch_irq_type(struct irq_data *d, unsigned int type) case IRQ_TYPE_LEVEL_LOW: val = PCH_LEVEL_L; break; - case IRQ_TYPE_PROBE: - goto end; default: - dev_warn(chip->dev, "%s: unknown type(%dd)", - __func__, type); - goto end; + goto unlock; } /* Set interrupt mode */ im = ioread32(im_reg) & ~(PCH_IM_MASK << (im_pos * 4)); iowrite32(im | (val << (im_pos * 4)), im_reg); - /* iclr */ - iowrite32(BIT(ch), &chip->reg->iclr); + /* And the handler */ + if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_LEVEL_HIGH)) + __irq_set_handler_locked(d->irq, handle_level_irq); + else if (type & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) + __irq_set_handler_locked(d->irq, handle_edge_irq); - /* IMASKCLR */ - iowrite32(BIT(ch), &chip->reg->imaskclr); - - /* Enable interrupt */ - ien = ioread32(&chip->reg->ien); - iowrite32(ien | BIT(ch), &chip->reg->ien); -end: +unlock: spin_unlock_irqrestore(&chip->spinlock, flags); - return 0; } @@ -313,18 +301,24 @@ static void pch_irq_mask(struct irq_data *d) iowrite32(1 << (d->irq - chip->irq_base), &chip->reg->imask); } +static void pch_irq_ack(struct irq_data *d) +{ + struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d); + struct pch_gpio *chip = gc->private; + + iowrite32(1 << (d->irq - chip->irq_base), &chip->reg->iclr); +} + static irqreturn_t pch_gpio_handler(int irq, void *dev_id) { struct pch_gpio *chip = dev_id; u32 reg_val = ioread32(&chip->reg->istatus); - int i; - int ret = IRQ_NONE; + int i, ret = IRQ_NONE; for (i = 0; i < gpio_pins[chip->ioh]; i++) { if (reg_val & BIT(i)) { dev_dbg(chip->dev, "%s:[%d]:irq=%d status=0x%x\n", __func__, i, irq, reg_val); - iowrite32(BIT(i), &chip->reg->iclr); generic_handle_irq(chip->irq_base + i); ret = IRQ_HANDLED; } @@ -343,6 +337,7 @@ static __devinit void pch_gpio_alloc_generic_chip(struct pch_gpio *chip, gc->private = chip; ct = gc->chip_types; + ct->chip.irq_ack = pch_irq_ack; ct->chip.irq_mask = pch_irq_mask; ct->chip.irq_unmask = pch_irq_unmask; ct->chip.irq_set_type = pch_irq_type; @@ -357,6 +352,7 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, s32 ret; struct pch_gpio *chip; int irq_base; + u32 msk; chip = kzalloc(sizeof(*chip), GFP_KERNEL); if (chip == NULL) @@ -408,8 +404,13 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, } chip->irq_base = irq_base; + /* Mask all interrupts, but enable them */ + msk = (1 << gpio_pins[chip->ioh]) - 1; + iowrite32(msk, &chip->reg->imask); + iowrite32(msk, &chip->reg->ien); + ret = request_irq(pdev->irq, pch_gpio_handler, - IRQF_SHARED, KBUILD_MODNAME, chip); + IRQF_SHARED, KBUILD_MODNAME, chip); if (ret != 0) { dev_err(&pdev->dev, "%s request_irq failed\n", __func__); @@ -418,8 +419,6 @@ static int __devinit pch_gpio_probe(struct pci_dev *pdev, pch_gpio_alloc_generic_chip(chip, irq_base, gpio_pins[chip->ioh]); - /* Initialize interrupt ien register */ - iowrite32(0, &chip->reg->ien); end: return 0; -- cgit v1.1 From 2760f7adbb6c4e39bd3ae733f56d4ac8fb5e3521 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 30 Apr 2012 12:22:48 +0530 Subject: gpio/exynos: Fix compiler warnings when non-exynos machines are selected MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Fixes the following compiler warnings: drivers/gpio/gpio-samsung.c: In function ‘samsung_gpiolib_init’: drivers/gpio/gpio-samsung.c:2980:1: warning: label ‘err_ioremap1’ defined but not used [-Wunused-label] drivers/gpio/gpio-samsung.c:2978:1: warning: label ‘err_ioremap2’ defined but not used [-Wunused-label] drivers/gpio/gpio-samsung.c:2976:1: warning: label ‘err_ioremap3’ defined but not used [-Wunused-label] drivers/gpio/gpio-samsung.c:2974:1: warning: label ‘err_ioremap4’ defined but not used [-Wunused-label] drivers/gpio/gpio-samsung.c:2722:55: warning: unused variable ‘gpio_base4’ [-Wunused-variable] drivers/gpio/gpio-samsung.c:455:32: warning: ‘exynos_gpio_cfg’ defined but not used [-Wunused-variable] drivers/gpio/gpio-samsung.c:2126:33: warning: ‘exynos4_gpios_1’ defined but not used [-Wunused-variable] drivers/gpio/gpio-samsung.c:2228:33: warning: ‘exynos4_gpios_2’ defined but not used [-Wunused-variable] drivers/gpio/gpio-samsung.c:2373:33: warning: ‘exynos4_gpios_3’ defined but not used [-Wunused-variable] Signed-off-by: Sachin Kamat Signed-off-by: Grant Likely --- drivers/gpio/gpio-samsung.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/gpio/gpio-samsung.c b/drivers/gpio/gpio-samsung.c index 19d6fc0..e991d91 100644 --- a/drivers/gpio/gpio-samsung.c +++ b/drivers/gpio/gpio-samsung.c @@ -452,12 +452,14 @@ static struct samsung_gpio_cfg s3c24xx_gpiocfg_banka = { }; #endif +#if defined(CONFIG_ARCH_EXYNOS4) || defined(CONFIG_ARCH_EXYNOS5) static struct samsung_gpio_cfg exynos_gpio_cfg = { .set_pull = exynos_gpio_setpull, .get_pull = exynos_gpio_getpull, .set_config = samsung_gpio_setcfg_4bit, .get_config = samsung_gpio_getcfg_4bit, }; +#endif #if defined(CONFIG_CPU_S5P6440) || defined(CONFIG_CPU_S5P6450) static struct samsung_gpio_cfg s5p64x0_gpio_cfg_rbank = { @@ -2123,8 +2125,8 @@ static struct samsung_gpio_chip s5pv210_gpios_4bit[] = { * uses the above macro and depends on the banks being listed in order here. */ -static struct samsung_gpio_chip exynos4_gpios_1[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_1[] = { { .chip = { .base = EXYNOS4_GPA0(0), @@ -2222,11 +2224,11 @@ static struct samsung_gpio_chip exynos4_gpios_1[] = { .label = "GPF3", }, }, -#endif }; +#endif -static struct samsung_gpio_chip exynos4_gpios_2[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_2[] = { { .chip = { .base = EXYNOS4_GPJ0(0), @@ -2367,11 +2369,11 @@ static struct samsung_gpio_chip exynos4_gpios_2[] = { .to_irq = samsung_gpiolib_to_irq, }, }, -#endif }; +#endif -static struct samsung_gpio_chip exynos4_gpios_3[] = { #ifdef CONFIG_ARCH_EXYNOS4 +static struct samsung_gpio_chip exynos4_gpios_3[] = { { .chip = { .base = EXYNOS4_GPZ(0), @@ -2379,8 +2381,8 @@ static struct samsung_gpio_chip exynos4_gpios_3[] = { .label = "GPZ", }, }, -#endif }; +#endif #ifdef CONFIG_ARCH_EXYNOS5 static struct samsung_gpio_chip exynos5_gpios_1[] = { @@ -2719,7 +2721,9 @@ static __init int samsung_gpiolib_init(void) { struct samsung_gpio_chip *chip; int i, nr_chips; +#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS5250) void __iomem *gpio_base1, *gpio_base2, *gpio_base3, *gpio_base4; +#endif int group = 0; samsung_gpiolib_set_cfg(samsung_gpio_cfgs, ARRAY_SIZE(samsung_gpio_cfgs)); @@ -2971,6 +2975,7 @@ static __init int samsung_gpiolib_init(void) return 0; +#if defined(CONFIG_CPU_EXYNOS4210) || defined(CONFIG_SOC_EXYNOS5250) err_ioremap4: iounmap(gpio_base3); err_ioremap3: @@ -2979,6 +2984,7 @@ err_ioremap2: iounmap(gpio_base1); err_ioremap1: return -ENOMEM; +#endif } core_initcall(samsung_gpiolib_init); -- cgit v1.1 From 03aaae7cdc71bc306888440b1f569d463e917b6d Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Sat, 12 May 2012 01:43:12 +0100 Subject: dm thin: reinstate missing mempool_free in cell_release_singleton Fix a significant memory leak inadvertently introduced during simplification of cell_release_singleton() in commit 6f94a4c45a6f744383f9f695dde019998db3df55 ("dm thin: fix stacked bi_next usage"). A cell's hlist_del() must be accompanied by a mempool_free(). Use __cell_release() to do this, like before. Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 213ae32..301db0f 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -279,8 +279,10 @@ static void __cell_release(struct cell *cell, struct bio_list *inmates) hlist_del(&cell->list); - bio_list_add(inmates, cell->holder); - bio_list_merge(inmates, &cell->bios); + if (inmates) { + bio_list_add(inmates, cell->holder); + bio_list_merge(inmates, &cell->bios); + } mempool_free(cell, prison->cell_pool); } @@ -303,9 +305,10 @@ static void cell_release(struct cell *cell, struct bio_list *bios) */ static void __cell_release_singleton(struct cell *cell, struct bio *bio) { - hlist_del(&cell->list); BUG_ON(cell->holder != bio); BUG_ON(!bio_list_empty(&cell->bios)); + + __cell_release(cell, NULL); } static void cell_release_singleton(struct cell *cell, struct bio *bio) -- cgit v1.1 From c3a0ce2eab76daf9516c817c3f227ea3f4549bd8 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Sat, 12 May 2012 01:43:16 +0100 Subject: dm thin: fix unprotected use of prepared_discards list Fix two places in commit 104655fd4dce ("dm thin: support discards") that didn't use pool->lock to protect against concurrent changes to the prepared_discards list. Without this fix, thin_endio() can race with process_discard(), leading to concurrent list_add()s that result in the processes locking up with an error like the following: WARNING: at lib/list_debug.c:32 __list_add+0x8f/0xa0() ... list_add corruption. next->prev should be prev (ffff880323b96140), but was ffff8801d2c48440. (next=ffff8801d2c485c0). ... Pid: 17205, comm: kworker/u:1 Tainted: G W O 3.4.0-rc3.snitm+ #1 Call Trace: [] warn_slowpath_common+0x7f/0xc0 [] warn_slowpath_fmt+0x46/0x50 [] ? bio_detain+0xc6/0x210 [dm_thin_pool] [] __list_add+0x8f/0xa0 [] process_discard+0x2a2/0x2d0 [dm_thin_pool] [] ? remap_and_issue+0x38/0x50 [dm_thin_pool] [] process_deferred_bios+0x7b/0x230 [dm_thin_pool] [] ? process_deferred_bios+0x230/0x230 [dm_thin_pool] [] do_worker+0x52/0x60 [dm_thin_pool] [] process_one_work+0x129/0x450 [] worker_thread+0x17c/0x3c0 [] ? manage_workers+0x120/0x120 [] kthread+0x9e/0xb0 [] kernel_thread_helper+0x4/0x10 [] ? kthread_freezable_should_stop+0x70/0x70 [] ? gs_change+0x13/0x13 ---[ end trace 7e0a523bc5e52692 ]--- Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 301db0f..69a2d51 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -1180,6 +1180,7 @@ static void no_space(struct cell *cell) static void process_discard(struct thin_c *tc, struct bio *bio) { int r; + unsigned long flags; struct pool *pool = tc->pool; struct cell *cell, *cell2; struct cell_key key, key2; @@ -1221,7 +1222,9 @@ static void process_discard(struct thin_c *tc, struct bio *bio) m->bio = bio; if (!ds_add_work(&pool->all_io_ds, &m->list)) { + spin_lock_irqsave(&pool->lock, flags); list_add(&m->list, &pool->prepared_discards); + spin_unlock_irqrestore(&pool->lock, flags); wake_worker(pool); } } else { @@ -2629,8 +2632,10 @@ static int thin_endio(struct dm_target *ti, if (h->all_io_entry) { INIT_LIST_HEAD(&work); ds_dec(h->all_io_entry, &work); + spin_lock_irqsave(&pool->lock, flags); list_for_each_entry_safe(m, tmp, &work, list) list_add(&m->list, &pool->prepared_discards); + spin_unlock_irqrestore(&pool->lock, flags); } mempool_free(h, pool->endio_hook_pool); -- cgit v1.1 From 7cab8bf1601d38fd73a0a4ea40cc4892b26907cc Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Sat, 12 May 2012 01:43:19 +0100 Subject: dm thin: correct module description Remove duplicate copy of string "device-mapper" (DM_NAME) from MODULE_DESCRIPTION. Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 69a2d51..2fd87b5 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -2767,6 +2767,6 @@ static void dm_thin_exit(void) module_init(dm_thin_init); module_exit(dm_thin_exit); -MODULE_DESCRIPTION(DM_NAME "device-mapper thin provisioning target"); +MODULE_DESCRIPTION(DM_NAME " thin provisioning target"); MODULE_AUTHOR("Joe Thornber "); MODULE_LICENSE("GPL"); -- cgit v1.1 From 510193a2d3d2e03ae53b95c0ae4f33cdff02cbf8 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Sat, 12 May 2012 01:43:21 +0100 Subject: dm mpath: check if scsi_dh module already loaded before trying to load If the requested scsi_dh module is already loaded then skip request_module(). Multipath table loads can hang in an unnecessary __request_module. Reported-by: Ben Marzinski Cc: stable@kernel.org Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-mpath.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c index 922a338..754f38f 100644 --- a/drivers/md/dm-mpath.c +++ b/drivers/md/dm-mpath.c @@ -718,8 +718,8 @@ static int parse_hw_handler(struct dm_arg_set *as, struct multipath *m) return 0; m->hw_handler_name = kstrdup(dm_shift_arg(as), GFP_KERNEL); - request_module("scsi_dh_%s", m->hw_handler_name); - if (scsi_dh_handler_exist(m->hw_handler_name) == 0) { + if (!try_then_request_module(scsi_dh_handler_exist(m->hw_handler_name), + "scsi_dh_%s", m->hw_handler_name)) { ti->error = "unknown hardware handler type"; ret = -EINVAL; goto fail; -- cgit v1.1 From a6c072c709b4a3659264ea4e9e6289a9d23c17a3 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Fri, 11 May 2012 21:35:45 +0200 Subject: MAINTAINERS: Add myself as the cpufreq maintainer Since cpufreq has no official maintainer at the moment, I'm willing to maintain it along some other power management core code I've been maintaining already. Signed-off-by: Rafael J. Wysocki Signed-off-by: Linus Torvalds --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index de4e280..b362709 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1968,7 +1968,9 @@ S: Maintained F: drivers/net/ethernet/ti/cpmac.c CPU FREQUENCY DRIVERS +M: Rafael J. Wysocki L: cpufreq@vger.kernel.org +L: linux-pm@vger.kernel.org S: Maintained F: drivers/cpufreq/ F: include/linux/cpufreq.h -- cgit v1.1 From 2b3e38c4fbeb88092390f7c29b4934212abe9ded Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 16 Apr 2012 23:09:13 +0200 Subject: ARM: mach-shmobile: convert mackerel to use the generic MMC GPIO hotplug helper This also fixes the following modular mmc build failure: arch/arm/mach-shmobile/built-in.o: In function `ag5evm_sdhi0_gpio_cd': pfc-sh73a0.c:(.text+0x7c0): undefined reference to `mmc_detect_change' on this platform by eliminating the use of an inline function, which calls into the mmc core. Signed-off-by: Guennadi Liakhovetski Tested-by: Simon Horman Acked-by: Magnus Damm Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/board-mackerel.c | 22 ++-------------------- 1 file changed, 2 insertions(+), 20 deletions(-) diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c index f49e28a..8c6202b 100644 --- a/arch/arm/mach-shmobile/board-mackerel.c +++ b/arch/arm/mach-shmobile/board-mackerel.c @@ -1011,21 +1011,12 @@ static int slot_cn7_get_cd(struct platform_device *pdev) } /* SDHI0 */ -static irqreturn_t mackerel_sdhi0_gpio_cd(int irq, void *arg) -{ - struct device *dev = arg; - struct sh_mobile_sdhi_info *info = dev->platform_data; - struct tmio_mmc_data *pdata = info->pdata; - - tmio_mmc_cd_wakeup(pdata); - - return IRQ_HANDLED; -} - static struct sh_mobile_sdhi_info sdhi0_info = { .dma_slave_tx = SHDMA_SLAVE_SDHI0_TX, .dma_slave_rx = SHDMA_SLAVE_SDHI0_RX, + .tmio_flags = TMIO_MMC_USE_GPIO_CD, .tmio_caps = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, + .cd_gpio = GPIO_PORT172, }; static struct resource sdhi0_resources[] = { @@ -1384,7 +1375,6 @@ static void __init mackerel_init(void) { u32 srcr4; struct clk *clk; - int ret; /* External clock source */ clk_set_rate(&sh7372_dv_clki_clk, 27000000); @@ -1481,7 +1471,6 @@ static void __init mackerel_init(void) irq_set_irq_type(IRQ21, IRQ_TYPE_LEVEL_HIGH); /* enable SDHI0 */ - gpio_request(GPIO_FN_SDHICD0, NULL); gpio_request(GPIO_FN_SDHIWP0, NULL); gpio_request(GPIO_FN_SDHICMD0, NULL); gpio_request(GPIO_FN_SDHICLK0, NULL); @@ -1490,13 +1479,6 @@ static void __init mackerel_init(void) gpio_request(GPIO_FN_SDHID0_1, NULL); gpio_request(GPIO_FN_SDHID0_0, NULL); - ret = request_irq(evt2irq(0x3340), mackerel_sdhi0_gpio_cd, - IRQF_TRIGGER_FALLING, "sdhi0 cd", &sdhi0_device.dev); - if (!ret) - sdhi0_info.tmio_flags |= TMIO_MMC_HAS_COLD_CD; - else - pr_err("Cannot get IRQ #%d: %d\n", evt2irq(0x3340), ret); - #if !defined(CONFIG_MMC_SH_MMCIF) && !defined(CONFIG_MMC_SH_MMCIF_MODULE) /* enable SDHI1 */ gpio_request(GPIO_FN_SDHICMD1, NULL); -- cgit v1.1 From 173e2fec4d9e950ee5e4bba272091e248a961c98 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Mon, 16 Apr 2012 23:09:19 +0200 Subject: ARM: mach-shmobile: convert ag5evm to use the generic MMC GPIO hotplug helper This also fixes the following modular mmc build failure: arch/arm/mach-shmobile/built-in.o: In function `mackerel_sdhi0_gpio_cd': pfc-sh7372.c:(.text+0x1138): undefined reference to `mmc_detect_change' on this platform by eliminating the use of an inline function, which calls into the mmc core. Signed-off-by: Guennadi Liakhovetski Reviewed-by: Simon Horman Acked-by: Magnus Damm Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/board-ag5evm.c | 22 ++-------------------- 1 file changed, 2 insertions(+), 20 deletions(-) diff --git a/arch/arm/mach-shmobile/board-ag5evm.c b/arch/arm/mach-shmobile/board-ag5evm.c index cb224a3..0891ec6 100644 --- a/arch/arm/mach-shmobile/board-ag5evm.c +++ b/arch/arm/mach-shmobile/board-ag5evm.c @@ -365,23 +365,13 @@ static struct platform_device mipidsi0_device = { }; /* SDHI0 */ -static irqreturn_t ag5evm_sdhi0_gpio_cd(int irq, void *arg) -{ - struct device *dev = arg; - struct sh_mobile_sdhi_info *info = dev->platform_data; - struct tmio_mmc_data *pdata = info->pdata; - - tmio_mmc_cd_wakeup(pdata); - - return IRQ_HANDLED; -} - static struct sh_mobile_sdhi_info sdhi0_info = { .dma_slave_tx = SHDMA_SLAVE_SDHI0_TX, .dma_slave_rx = SHDMA_SLAVE_SDHI0_RX, - .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT, + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_USE_GPIO_CD, .tmio_caps = MMC_CAP_SD_HIGHSPEED, .tmio_ocr_mask = MMC_VDD_27_28 | MMC_VDD_28_29, + .cd_gpio = GPIO_PORT251, }; static struct resource sdhi0_resources[] = { @@ -557,7 +547,6 @@ static void __init ag5evm_init(void) lcd_backlight_reset(); /* enable SDHI0 on CN15 [SD I/F] */ - gpio_request(GPIO_FN_SDHICD0, NULL); gpio_request(GPIO_FN_SDHIWP0, NULL); gpio_request(GPIO_FN_SDHICMD0, NULL); gpio_request(GPIO_FN_SDHICLK0, NULL); @@ -566,13 +555,6 @@ static void __init ag5evm_init(void) gpio_request(GPIO_FN_SDHID0_1, NULL); gpio_request(GPIO_FN_SDHID0_0, NULL); - if (!request_irq(intcs_evt2irq(0x3c0), ag5evm_sdhi0_gpio_cd, - IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING, - "sdhi0 cd", &sdhi0_device.dev)) - sdhi0_info.tmio_flags |= TMIO_MMC_HAS_COLD_CD; - else - pr_warn("Unable to setup SDHI0 GPIO IRQ\n"); - /* enable SDHI1 on CN4 [WLAN I/F] */ gpio_request(GPIO_FN_SDHICLK1, NULL); gpio_request(GPIO_FN_SDHICMD1_PU, NULL); -- cgit v1.1 From b759bd114e27fbb940fb44fd16552e8f4acd831e Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Thu, 10 May 2012 14:57:22 +0900 Subject: ARM / mach-shmobile: r8a7779 SMP TWD boot regression fix Fix SMP TWD boot regression on r8a7779 based platforms caused by: 4200b16 ARM: shmobile: convert to twd_local_timer_register() interface After the merge of the above commit it has been impossible to boot r8a7779 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The kernel crashes at smp_init_cpus() timing which is before the console has been initialized, so to the user this looks like a kernel lock up without any particular error message. This patch fixes the regression on r8a7779 by moving the TWD registration code from smp_init_cpus() to sys_timer->init() time. Signed-off-by: Magnus Damm Acked-by: Marc Zyngier Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/include/mach/common.h | 1 + arch/arm/mach-shmobile/setup-r8a7779.c | 4 ++++ arch/arm/mach-shmobile/smp-r8a7779.c | 8 +++++++- 3 files changed, 12 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index 83ad3fe..18ac825 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -82,5 +82,6 @@ extern int r8a7779_platform_cpu_kill(unsigned int cpu); extern void r8a7779_secondary_init(unsigned int cpu); extern int r8a7779_boot_secondary(unsigned int cpu); extern void r8a7779_smp_prepare_cpus(void); +extern void r8a7779_register_twd(void); #endif /* __ARCH_MACH_COMMON_H */ diff --git a/arch/arm/mach-shmobile/setup-r8a7779.c b/arch/arm/mach-shmobile/setup-r8a7779.c index 12c6f52..e98e46f 100644 --- a/arch/arm/mach-shmobile/setup-r8a7779.c +++ b/arch/arm/mach-shmobile/setup-r8a7779.c @@ -262,10 +262,14 @@ void __init r8a7779_add_standard_devices(void) ARRAY_SIZE(r8a7779_late_devices)); } +/* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */ +void __init __weak r8a7779_register_twd(void) { } + static void __init r8a7779_earlytimer_init(void) { r8a7779_clock_init(); shmobile_earlytimer_init(); + r8a7779_register_twd(); } void __init r8a7779_add_early_devices(void) diff --git a/arch/arm/mach-shmobile/smp-r8a7779.c b/arch/arm/mach-shmobile/smp-r8a7779.c index b62e19d..6d1d023 100644 --- a/arch/arm/mach-shmobile/smp-r8a7779.c +++ b/arch/arm/mach-shmobile/smp-r8a7779.c @@ -64,8 +64,15 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +#ifdef CONFIG_HAVE_ARM_TWD static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); +void __init r8a7779_register_twd(void) +{ + twd_local_timer_register(&twd_local_timer); +} +#endif + static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { void __iomem *scu_base = scu_base_addr(); @@ -84,7 +91,6 @@ unsigned int __init r8a7779_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); - shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } -- cgit v1.1 From d6720003c3732db891f6b5b10691a9c13ff6c46b Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Thu, 10 May 2012 00:26:58 -0700 Subject: ARM / mach-shmobile: sh73a0 SMP TWD boot regression fix Fix SMP TWD boot regression on sh73a0 based platforms caused by: 4200b16 ARM: shmobile: convert to twd_local_timer_register() interface After the merge of the above commit it has been impossible to boot sh73a0 based SoCs with SMP enabled and CONFIG_HAVE_ARM_TWD=y. The kernel crashes at smp_init_cpus() timing which is before the console has been initialized, so to the user this looks like a kernel lock up without any particular error message. This patch fixes the regression on sh73a0 by moving the TWD registration code from smp_init_cpus() to sys_timer->init() time. This patch removed shmobile_twd_init() which is no longer needed Signed-off-by: Kuninori Morimoto Signed-off-by: Magnus Damm Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/include/mach/common.h | 1 - arch/arm/mach-shmobile/setup-sh73a0.c | 4 ++++ arch/arm/mach-shmobile/smp-sh73a0.c | 7 ++++++- arch/arm/mach-shmobile/timer.c | 9 --------- 4 files changed, 10 insertions(+), 11 deletions(-) diff --git a/arch/arm/mach-shmobile/include/mach/common.h b/arch/arm/mach-shmobile/include/mach/common.h index 18ac825..c85e6ec 100644 --- a/arch/arm/mach-shmobile/include/mach/common.h +++ b/arch/arm/mach-shmobile/include/mach/common.h @@ -4,7 +4,6 @@ extern void shmobile_earlytimer_init(void); extern struct sys_timer shmobile_timer; struct twd_local_timer; -void shmobile_twd_init(struct twd_local_timer *twd_local_timer); extern void shmobile_setup_console(void); extern void shmobile_secondary_vector(void); extern int shmobile_platform_cpu_kill(unsigned int cpu); diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c index 5bebffc..04a0dfe 100644 --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -688,10 +688,14 @@ void __init sh73a0_add_standard_devices(void) ARRAY_SIZE(sh73a0_late_devices)); } +/* do nothing for !CONFIG_SMP or !CONFIG_HAVE_TWD */ +void __init __weak sh73a0_register_twd(void) { } + static void __init sh73a0_earlytimer_init(void) { sh73a0_clock_init(); shmobile_earlytimer_init(); + sh73a0_register_twd(); } void __init sh73a0_add_early_devices(void) diff --git a/arch/arm/mach-shmobile/smp-sh73a0.c b/arch/arm/mach-shmobile/smp-sh73a0.c index 14ad8b05..e36c41c 100644 --- a/arch/arm/mach-shmobile/smp-sh73a0.c +++ b/arch/arm/mach-shmobile/smp-sh73a0.c @@ -42,7 +42,13 @@ static void __iomem *scu_base_addr(void) static DEFINE_SPINLOCK(scu_lock); static unsigned long tmp; +#ifdef CONFIG_HAVE_ARM_TWD static DEFINE_TWD_LOCAL_TIMER(twd_local_timer, 0xf0000600, 29); +void __init sh73a0_register_twd(void) +{ + twd_local_timer_register(&twd_local_timer); +} +#endif static void modify_scu_cpu_psr(unsigned long set, unsigned long clr) { @@ -62,7 +68,6 @@ unsigned int __init sh73a0_get_core_count(void) { void __iomem *scu_base = scu_base_addr(); - shmobile_twd_init(&twd_local_timer); return scu_get_core_count(scu_base); } diff --git a/arch/arm/mach-shmobile/timer.c b/arch/arm/mach-shmobile/timer.c index 2fba5f3..8b79e79 100644 --- a/arch/arm/mach-shmobile/timer.c +++ b/arch/arm/mach-shmobile/timer.c @@ -46,15 +46,6 @@ static void __init shmobile_timer_init(void) { } -void __init shmobile_twd_init(struct twd_local_timer *twd_local_timer) -{ -#ifdef CONFIG_HAVE_ARM_TWD - int err = twd_local_timer_register(twd_local_timer); - if (err) - pr_err("twd_local_timer_register failed %d\n", err); -#endif -} - struct sys_timer shmobile_timer = { .init = shmobile_timer_init, }; -- cgit v1.1 From e994d5eb7c3e45e13eb4fc882a47238f8dc4d63e Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Wed, 9 May 2012 16:24:59 +0900 Subject: ARM / mach-shmobile: Invalidate caches when booting secondary cores Make sure L1 caches are invalidated when booting secondary cores. Needed to boot all mach-shmobile SMP systems that are using Cortex-A9 including sh73a0, r8a7779 and EMEV2. Thanks to imx and tegra guys for actual code. Signed-off-by: Magnus Damm Tested-by: Kuninori Morimoto Signed-off-by: Rafael J. Wysocki --- arch/arm/mach-shmobile/headsmp.S | 56 +++++++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-shmobile/headsmp.S b/arch/arm/mach-shmobile/headsmp.S index 6ac015c..b202c12 100644 --- a/arch/arm/mach-shmobile/headsmp.S +++ b/arch/arm/mach-shmobile/headsmp.S @@ -16,6 +16,59 @@ __CPUINIT +/* Cache invalidation nicked from arch/arm/mach-imx/head-v7.S, thanks! + * + * The secondary kernel init calls v7_flush_dcache_all before it enables + * the L1; however, the L1 comes out of reset in an undefined state, so + * the clean + invalidate performed by v7_flush_dcache_all causes a bunch + * of cache lines with uninitialized data and uninitialized tags to get + * written out to memory, which does really unpleasant things to the main + * processor. We fix this by performing an invalidate, rather than a + * clean + invalidate, before jumping into the kernel. + * + * This funciton is cloned from arch/arm/mach-tegra/headsmp.S, and needs + * to be called for both secondary cores startup and primary core resume + * procedures. Ideally, it should be moved into arch/arm/mm/cache-v7.S. + */ +ENTRY(v7_invalidate_l1) + mov r0, #0 + mcr p15, 0, r0, c7, c5, 0 @ invalidate I cache + mcr p15, 2, r0, c0, c0, 0 + mrc p15, 1, r0, c0, c0, 0 + + ldr r1, =0x7fff + and r2, r1, r0, lsr #13 + + ldr r1, =0x3ff + + and r3, r1, r0, lsr #3 @ NumWays - 1 + add r2, r2, #1 @ NumSets + + and r0, r0, #0x7 + add r0, r0, #4 @ SetShift + + clz r1, r3 @ WayShift + add r4, r3, #1 @ NumWays +1: sub r2, r2, #1 @ NumSets-- + mov r3, r4 @ Temp = NumWays +2: subs r3, r3, #1 @ Temp-- + mov r5, r3, lsl r1 + mov r6, r2, lsl r0 + orr r5, r5, r6 @ Reg = (Temp< Date: Sat, 12 May 2012 06:17:59 +0900 Subject: ARM: EXYNOS: use s5p-timer for UniversalC210 board Commit 069d4e743 ("ARM: EXYNOS4: Remove clock event timers using ARM private timers") removed support for local timers and forced to use MCT as event source. However MCT is not operating properly on early revision of EXYNOS4 SoCs. All UniversalC210 boards are based on it, so that commit broke support for it. This patch provides a workaround that enables UniversalC210 boards to boot again. s5p-timer is used as an event source, it works only for non-SMP builds. Signed-off-by: Marek Szyprowski Signed-off-by: Kyungmin Park Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/Kconfig | 3 +++ arch/arm/mach-exynos/mach-universal_c210.c | 4 +++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig index e81c35f..b8df521 100644 --- a/arch/arm/mach-exynos/Kconfig +++ b/arch/arm/mach-exynos/Kconfig @@ -232,6 +232,9 @@ config MACH_ARMLEX4210 config MACH_UNIVERSAL_C210 bool "Mobile UNIVERSAL_C210 Board" select CPU_EXYNOS4210 + select S5P_HRT + select CLKSRC_MMIO + select HAVE_SCHED_CLOCK select S5P_GPIO_INT select S5P_DEV_FIMC0 select S5P_DEV_FIMC1 diff --git a/arch/arm/mach-exynos/mach-universal_c210.c b/arch/arm/mach-exynos/mach-universal_c210.c index cb2b027..a34036e 100644 --- a/arch/arm/mach-exynos/mach-universal_c210.c +++ b/arch/arm/mach-exynos/mach-universal_c210.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include @@ -1063,6 +1064,7 @@ static void __init universal_map_io(void) exynos_init_io(NULL, 0); s3c24xx_init_clocks(24000000); s3c24xx_init_uarts(universal_uartcfgs, ARRAY_SIZE(universal_uartcfgs)); + s5p_set_timer_source(S5P_PWM2, S5P_PWM4); } static void s5p_tv_setup(void) @@ -1113,7 +1115,7 @@ MACHINE_START(UNIVERSAL_C210, "UNIVERSAL_C210") .map_io = universal_map_io, .handle_irq = gic_handle_irq, .init_machine = universal_machine_init, - .timer = &exynos4_timer, + .timer = &s5p_timer, .reserve = &universal_reserve, .restart = exynos4_restart, MACHINE_END -- cgit v1.1 From 28b874a8ba7aed5152dc426dde38239ce23d8b37 Mon Sep 17 00:00:00 2001 From: Kukjin Kim Date: Sat, 12 May 2012 16:45:47 +0900 Subject: ARM: EXYNOS: fix ctrlbit for exynos5_clk_pdma1 It should be (1 << 2) for ctrlbit of exynos5_clk_pdma1. Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/clock-exynos5.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-exynos/clock-exynos5.c b/arch/arm/mach-exynos/clock-exynos5.c index 5cd7a8b..7ac6ff4 100644 --- a/arch/arm/mach-exynos/clock-exynos5.c +++ b/arch/arm/mach-exynos/clock-exynos5.c @@ -678,7 +678,7 @@ static struct clk exynos5_clk_pdma1 = { .name = "dma", .devname = "dma-pl330.1", .enable = exynos5_clk_ip_fsys_ctrl, - .ctrlbit = (1 << 1), + .ctrlbit = (1 << 2), }; static struct clk exynos5_clk_mdma1 = { -- cgit v1.1 From 36be50515fe2aef61533b516fa2576a2c7fe7664 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 12 May 2012 18:37:47 -0700 Subject: Linux 3.4-rc7 .. and this should hopefully be the last -rc before final 3.4 release. --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 9e384ae..48bd1f5 100644 --- a/Makefile +++ b/Makefile @@ -1,7 +1,7 @@ VERSION = 3 PATCHLEVEL = 4 SUBLEVEL = 0 -EXTRAVERSION = -rc6 +EXTRAVERSION = -rc7 NAME = Saber-toothed Squirrel # *DOCUMENTATION* -- cgit v1.1 From 14e99b4a3f5323bb961754de5024daff79e59b98 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 10 Feb 2012 01:05:43 -0800 Subject: isci: improve 'invalid state' warnings Convert controller state machine warnings to emit the state number (it missed the number to string conversion, but since these error rarely happen not much motivation to go further). Fix up the rnc warnings to use the state name. Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 33 ++++++++++++++++----------------- drivers/scsi/isci/remote_node_context.c | 33 ++++++++++++++++++++------------- 2 files changed, 36 insertions(+), 30 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index d4bf9c1..3822ffb 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -987,9 +987,8 @@ static enum sci_status sci_controller_start(struct isci_host *ihost, u16 index; if (ihost->sm.current_state_id != SCIC_INITIALIZED) { - dev_warn(&ihost->pdev->dev, - "SCIC Controller start operation requested in " - "invalid state\n"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -1213,9 +1212,8 @@ static void isci_host_completion_routine(unsigned long data) static enum sci_status sci_controller_stop(struct isci_host *ihost, u32 timeout) { if (ihost->sm.current_state_id != SCIC_READY) { - dev_warn(&ihost->pdev->dev, - "SCIC Controller stop operation requested in " - "invalid state\n"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -1250,9 +1248,8 @@ static enum sci_status sci_controller_reset(struct isci_host *ihost) sci_change_state(&ihost->sm, SCIC_RESETTING); return SCI_SUCCESS; default: - dev_warn(&ihost->pdev->dev, - "SCIC Controller reset operation requested in " - "invalid state\n"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } } @@ -2279,9 +2276,8 @@ static enum sci_status sci_controller_initialize(struct isci_host *ihost) unsigned long i, state, val; if (ihost->sm.current_state_id != SCIC_RESET) { - dev_warn(&ihost->pdev->dev, - "SCIC Controller initialize operation requested " - "in invalid state\n"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -2842,7 +2838,8 @@ enum sci_status sci_controller_start_io(struct isci_host *ihost, enum sci_status status; if (ihost->sm.current_state_id != SCIC_READY) { - dev_warn(&ihost->pdev->dev, "invalid state to start I/O"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -2866,8 +2863,8 @@ enum sci_status sci_controller_terminate_request(struct isci_host *ihost, enum sci_status status; if (ihost->sm.current_state_id != SCIC_READY) { - dev_warn(&ihost->pdev->dev, - "invalid state to terminate request\n"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -2915,7 +2912,8 @@ enum sci_status sci_controller_complete_io(struct isci_host *ihost, clear_bit(IREQ_ACTIVE, &ireq->flags); return SCI_SUCCESS; default: - dev_warn(&ihost->pdev->dev, "invalid state to complete I/O"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } @@ -2926,7 +2924,8 @@ enum sci_status sci_controller_continue_io(struct isci_request *ireq) struct isci_host *ihost = ireq->owning_controller; if (ihost->sm.current_state_id != SCIC_READY) { - dev_warn(&ihost->pdev->dev, "invalid state to continue I/O"); + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", + __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 3a94634..994ec0c 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -443,14 +443,16 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con break; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state: %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } return SCI_SUCCESS; out: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: code: %#x state: %d\n", __func__, event_code, state); + "%s: code: %#x state: %s\n", __func__, event_code, + rnc_state_name(state)); return SCI_FAILURE; } @@ -477,7 +479,8 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context return SCI_SUCCESS; case SCI_RNC_INITIAL: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state: %s\n", __func__, + rnc_state_name(state)); /* We have decided that the destruct request on the remote node context * can not fail since it is either in the initial/destroyed state or is * can be destroyed. @@ -485,7 +488,8 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -500,7 +504,8 @@ enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context * state = sci_rnc->sm.current_state_id; if (state != SCI_RNC_READY) { dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } @@ -571,7 +576,8 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } @@ -590,15 +596,15 @@ enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context case SCI_RNC_TX_RX_SUSPENDED: case SCI_RNC_AWAIT_SUSPENSION: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED; default: - break; + dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); + return SCI_FAILURE_INVALID_STATE; } - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: requested to start IO while still resuming, %d\n", - __func__, state); - return SCI_FAILURE_INVALID_STATE; } enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc, @@ -618,7 +624,8 @@ enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_contex return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %d\n", __func__, state); + "%s: invalid state %s\n", __func__, + rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } } -- cgit v1.1 From 11cc51835af0e6fbb2da9cb012bdaaa036497b7f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 1 Feb 2012 00:23:10 -0800 Subject: isci: kill ->is_direct_attached domain_device ->parent conveys the same information. Occurrences of ->is_direct_attached appear next to incomplete open-coded versions of dev_is_sata(), clean those up as well. Signed-off-by: Dan Williams --- drivers/scsi/isci/host.h | 4 ++-- drivers/scsi/isci/remote_device.c | 29 +++++------------------------ drivers/scsi/isci/remote_device.h | 1 - drivers/scsi/isci/remote_node_context.c | 27 ++++++++------------------- drivers/scsi/isci/request.c | 5 ++--- 5 files changed, 17 insertions(+), 49 deletions(-) diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index adbad69..a9679ee 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -55,6 +55,7 @@ #ifndef _SCI_HOST_H_ #define _SCI_HOST_H_ +#include #include "remote_device.h" #include "phy.h" #include "isci.h" @@ -378,8 +379,7 @@ static inline int sci_remote_device_node_count(struct isci_remote_device *idev) { struct domain_device *dev = idev->domain_dev; - if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) && - !idev->is_direct_attached) + if (dev_is_sata(dev) && dev->parent) return SCU_STP_REMOTE_NODE_COUNT; return SCU_SSP_REMOTE_NODE_COUNT; } diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 8f501b0..71f5090 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1113,33 +1113,20 @@ static enum sci_status sci_remote_device_da_construct(struct isci_port *iport, { enum sci_status status; struct sci_port_properties properties; - struct domain_device *dev = idev->domain_dev; sci_remote_device_construct(iport, idev); - /* - * This information is request to determine how many remote node context - * entries will be needed to store the remote node. - */ - idev->is_direct_attached = true; - sci_port_get_properties(iport, &properties); /* Get accurate port width from port's phy mask for a DA device. */ idev->device_port_width = hweight32(properties.phy_mask); status = sci_controller_allocate_remote_node_context(iport->owning_controller, - idev, - &idev->rnc.remote_node_index); + idev, + &idev->rnc.remote_node_index); if (status != SCI_SUCCESS) return status; - if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV || - (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev)) - /* pass */; - else - return SCI_FAILURE_UNSUPPORTED_PROTOCOL; - idev->connection_rate = sci_port_get_max_allowed_speed(iport); return SCI_SUCCESS; @@ -1171,19 +1158,13 @@ static enum sci_status sci_remote_device_ea_construct(struct isci_port *iport, if (status != SCI_SUCCESS) return status; - if (dev->dev_type == SAS_END_DEV || dev->dev_type == SATA_DEV || - (dev->tproto & SAS_PROTOCOL_STP) || dev_is_expander(dev)) - /* pass */; - else - return SCI_FAILURE_UNSUPPORTED_PROTOCOL; - - /* - * For SAS-2 the physical link rate is actually a logical link + /* For SAS-2 the physical link rate is actually a logical link * rate that incorporates multiplexing. The SCU doesn't * incorporate multiplexing and for the purposes of the * connection the logical link rate is that same as the * physical. Furthermore, the SAS-2 and SAS-1.1 fields overlay - * one another, so this code works for both situations. */ + * one another, so this code works for both situations. + */ idev->connection_rate = min_t(u16, sci_port_get_max_allowed_speed(iport), dev->linkrate); diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 58637ee..4a67ff0 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -94,7 +94,6 @@ struct isci_remote_device { struct sci_base_state_machine sm; u32 device_port_width; enum sas_linkrate connection_rate; - bool is_direct_attached; struct isci_port *owning_port; struct sci_remote_node_context rnc; /* XXX unify with device reference counting and delete */ diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 994ec0c..8ce5a35 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -131,7 +131,7 @@ static void sci_remote_node_context_construct_buffer(struct sci_remote_node_cont rnc->ssp.arbitration_wait_time = 0; - if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { + if (dev_is_sata(dev)) { rnc->ssp.connection_occupancy_timeout = ihost->user_parameters.stp_max_occupancy_timeout; rnc->ssp.connection_inactivity_timeout = @@ -219,13 +219,12 @@ static void sci_remote_node_context_validate_context_buffer(struct sci_remote_no rnc_buffer->ssp.is_valid = true; - if (!idev->is_direct_attached && - (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP))) { + if (dev_is_sata(dev) && dev->parent) { sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_96); } else { sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_32); - if (idev->is_direct_attached) + if (!dev->parent) sci_port_setup_transports(idev->owning_port, sci_rnc->remote_node_index); } @@ -287,10 +286,8 @@ static void sci_remote_node_context_resuming_state_enter(struct sci_base_state_m * resume because of a target reset we also need to update * the STPTLDARNI register with the RNi of the device */ - if ((dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) && - idev->is_direct_attached) - sci_port_setup_transports(idev->owning_port, - rnc->remote_node_index); + if (dev_is_sata(dev) && !dev->parent) + sci_port_setup_transports(idev->owning_port, rnc->remote_node_index); sci_remote_device_post_request(idev, SCU_CONTEXT_COMMAND_POST_RNC_RESUME); } @@ -553,18 +550,10 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); - /* TODO: consider adding a resume action of NONE, INVALIDATE, WRITE_TLCR */ - if (dev->dev_type == SAS_END_DEV || dev_is_expander(dev)) + if (dev_is_sata(dev) && dev->parent) + sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); + else sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); - else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { - if (idev->is_direct_attached) { - /* @todo Fix this since I am being silly in writing to the STPTLDARNI register. */ - sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); - } else { - sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); - } - } else - return SCI_FAILURE; return SCI_SUCCESS; } case SCI_RNC_TX_RX_SUSPENDED: diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 2def1e3..01844ef 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -3193,7 +3193,7 @@ sci_io_request_construct(struct isci_host *ihost, if (dev->dev_type == SAS_END_DEV) /* pass */; - else if (dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) + else if (dev_is_sata(dev)) memset(&ireq->stp.cmd, 0, sizeof(ireq->stp.cmd)); else if (dev_is_expander(dev)) /* pass */; @@ -3215,8 +3215,7 @@ enum sci_status sci_task_request_construct(struct isci_host *ihost, /* Build the common part of the request */ sci_general_request_construct(ihost, idev, ireq); - if (dev->dev_type == SAS_END_DEV || - dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) { + if (dev->dev_type == SAS_END_DEV || dev_is_sata(dev)) { set_bit(IREQ_TMF, &ireq->flags); memset(ireq->tc, 0, sizeof(struct scu_task_context)); } else -- cgit v1.1 From c79dd80d73017a88a2c2ae46e7d5303cba6a32e0 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 1 Feb 2012 00:44:14 -0800 Subject: isci: kill sci_phy_protocol and sci_request_protocol Holdovers from the initial driver cleanup, replace with enum sas_protocol. Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 4 ++-- drivers/scsi/isci/phy.c | 12 ++++++------ drivers/scsi/isci/phy.h | 9 +-------- drivers/scsi/isci/port.c | 14 ++++++-------- drivers/scsi/isci/request.c | 10 +++++----- drivers/scsi/isci/request.h | 9 +-------- include/scsi/sas.h | 1 + 7 files changed, 22 insertions(+), 37 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 3822ffb..83886a2 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1911,7 +1911,7 @@ static void power_control_timeout(unsigned long data) ihost->power_control.phys_granted_power++; sci_phy_consume_power_handler(iphy); - if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + if (iphy->protocol == SAS_PROTOCOL_SSP) { u8 j; for (j = 0; j < SCI_MAX_PHYS; j++) { @@ -1985,7 +1985,7 @@ void sci_controller_power_control_queue_insert(struct isci_host *ihost, sizeof(current_phy->frame_rcvd.iaf.sas_addr)); if (current_phy->sm.current_state_id == SCI_PHY_READY && - current_phy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS && + current_phy->protocol == SAS_PROTOCOL_SSP && other == 0) { sci_phy_consume_power_handler(iphy); break; diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index fab3586..c685ab0 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -580,7 +580,7 @@ static void sci_phy_start_sas_link_training(struct isci_phy *iphy) sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SAS_SPEED_EN); - iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SAS; + iphy->protocol = SAS_PROTOCOL_SSP; } static void sci_phy_start_sata_link_training(struct isci_phy *iphy) @@ -591,7 +591,7 @@ static void sci_phy_start_sata_link_training(struct isci_phy *iphy) */ sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_POWER); - iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA; + iphy->protocol = SAS_PROTOCOL_SATA; } /** @@ -797,7 +797,7 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) */ break; case SCU_EVENT_SATA_PHY_DETECTED: - iphy->protocol = SCIC_SDS_PHY_PROTOCOL_SATA; + iphy->protocol = SAS_PROTOCOL_SATA; /* We have received the SATA PHY notification change state */ sci_change_state(&iphy->sm, SCI_PHY_SUB_AWAIT_SATA_SPEED_EN); @@ -1215,7 +1215,7 @@ static void sci_phy_starting_state_enter(struct sci_base_state_machine *sm) scu_link_layer_start_oob(iphy); /* We don't know what kind of phy we are going to be just yet */ - iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN; + iphy->protocol = SAS_PROTOCOL_NONE; iphy->bcn_received_while_port_unassigned = false; if (iphy->sm.previous_state_id == SCI_PHY_READY) @@ -1250,7 +1250,7 @@ static void sci_phy_resetting_state_enter(struct sci_base_state_machine *sm) */ sci_port_deactivate_phy(iphy->owning_port, iphy, false); - if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + if (iphy->protocol == SAS_PROTOCOL_SSP) { scu_link_layer_tx_hard_reset(iphy); } else { /* The SCU does not need to have a discrete reset state so @@ -1316,7 +1316,7 @@ void sci_phy_construct(struct isci_phy *iphy, iphy->owning_port = iport; iphy->phy_index = phy_index; iphy->bcn_received_while_port_unassigned = false; - iphy->protocol = SCIC_SDS_PHY_PROTOCOL_UNKNOWN; + iphy->protocol = SAS_PROTOCOL_NONE; iphy->link_layer_registers = NULL; iphy->max_negotiated_speed = SAS_LINK_RATE_UNKNOWN; diff --git a/drivers/scsi/isci/phy.h b/drivers/scsi/isci/phy.h index 0e45833..45fecfa 100644 --- a/drivers/scsi/isci/phy.h +++ b/drivers/scsi/isci/phy.h @@ -76,13 +76,6 @@ */ #define SCIC_SDS_SATA_LINK_TRAINING_TIMEOUT 250 -enum sci_phy_protocol { - SCIC_SDS_PHY_PROTOCOL_UNKNOWN, - SCIC_SDS_PHY_PROTOCOL_SAS, - SCIC_SDS_PHY_PROTOCOL_SATA, - SCIC_SDS_MAX_PHY_PROTOCOLS -}; - /** * isci_phy - hba local phy infrastructure * @sm: @@ -95,7 +88,7 @@ struct isci_phy { struct sci_base_state_machine sm; struct isci_port *owning_port; enum sas_linkrate max_negotiated_speed; - enum sci_phy_protocol protocol; + enum sas_protocol protocol; u8 phy_index; bool bcn_received_while_port_unassigned; bool is_in_link_training; diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 5fada73..923579f 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -184,7 +184,7 @@ static void isci_port_link_up(struct isci_host *isci_host, sci_port_get_properties(iport, &properties); - if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA) { + if (iphy->protocol == SAS_PROTOCOL_SATA) { u64 attached_sas_address; iphy->sas_phy.oob_mode = SATA_OOB_MODE; @@ -204,7 +204,7 @@ static void isci_port_link_up(struct isci_host *isci_host, memcpy(&iphy->sas_phy.attached_sas_addr, &attached_sas_address, sizeof(attached_sas_address)); - } else if (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SAS) { + } else if (iphy->protocol == SAS_PROTOCOL_SSP) { iphy->sas_phy.oob_mode = SAS_OOB_MODE; iphy->sas_phy.frame_rcvd_size = sizeof(struct sas_identify_frame); @@ -517,7 +517,7 @@ void sci_port_get_attached_sas_address(struct isci_port *iport, struct sci_sas_a */ iphy = sci_port_get_a_connected_phy(iport); if (iphy) { - if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA) { + if (iphy->protocol != SAS_PROTOCOL_SATA) { sci_phy_get_attached_sas_address(iphy, sas); } else { sci_phy_get_sas_address(iphy, sas); @@ -624,7 +624,7 @@ static void sci_port_activate_phy(struct isci_port *iport, { struct isci_host *ihost = iport->owning_controller; - if (iphy->protocol != SCIC_SDS_PHY_PROTOCOL_SATA && (flags & PF_RESUME)) + if (iphy->protocol != SAS_PROTOCOL_SATA && (flags & PF_RESUME)) sci_phy_resume(iphy); iport->active_phy_mask |= 1 << iphy->phy_index; @@ -751,12 +751,10 @@ static bool sci_port_is_wide(struct isci_port *iport) * wide ports and direct attached phys. Since there are no wide ported SATA * devices this could become an invalid port configuration. */ -bool sci_port_link_detected( - struct isci_port *iport, - struct isci_phy *iphy) +bool sci_port_link_detected(struct isci_port *iport, struct isci_phy *iphy) { if ((iport->logical_port_index != SCIC_SDS_DUMMY_PORT) && - (iphy->protocol == SCIC_SDS_PHY_PROTOCOL_SATA)) { + (iphy->protocol == SAS_PROTOCOL_SATA)) { if (sci_port_is_wide(iport)) { sci_port_invalid_link_up(iport, iphy); return false; diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 01844ef..835ede8 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -730,7 +730,7 @@ static enum sci_status sci_io_request_construct_basic_ssp(struct isci_request *i { struct sas_task *task = isci_request_access_task(ireq); - ireq->protocol = SCIC_SSP_PROTOCOL; + ireq->protocol = SAS_PROTOCOL_SSP; scu_ssp_io_request_construct_task_context(ireq, task->data_dir, @@ -763,7 +763,7 @@ static enum sci_status sci_io_request_construct_basic_sata(struct isci_request * bool copy = false; struct sas_task *task = isci_request_access_task(ireq); - ireq->protocol = SCIC_STP_PROTOCOL; + ireq->protocol = SAS_PROTOCOL_STP; copy = (task->data_dir == DMA_NONE) ? false : true; @@ -1070,7 +1070,7 @@ request_started_state_tc_event(struct isci_request *ireq, case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_UNEXP_SDBFIS): case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_REG_ERR): case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_SDB_ERR): - if (ireq->protocol == SCIC_STP_PROTOCOL) { + if (ireq->protocol == SAS_PROTOCOL_STP) { ireq->scu_status = SCU_GET_COMPLETION_TL_STATUS(completion_code) >> SCU_COMPLETION_TL_STATUS_SHIFT; ireq->sci_status = SCI_FAILURE_REMOTE_DEVICE_RESET_REQUIRED; @@ -3169,7 +3169,7 @@ sci_general_request_construct(struct isci_host *ihost, sci_init_sm(&ireq->sm, sci_request_state_table, SCI_REQ_INIT); ireq->target_device = idev; - ireq->protocol = SCIC_NO_PROTOCOL; + ireq->protocol = SAS_PROTOCOL_NONE; ireq->saved_rx_frame_index = SCU_INVALID_FRAME_INDEX; ireq->sci_status = SCI_SUCCESS; @@ -3310,7 +3310,7 @@ sci_io_request_construct_smp(struct device *dev, if (!dma_map_sg(dev, sg, 1, DMA_TO_DEVICE)) return SCI_FAILURE; - ireq->protocol = SCIC_SMP_PROTOCOL; + ireq->protocol = SAS_PROTOCOL_SMP; /* byte swap the smp request. */ diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 057f237..4961f9f 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -77,13 +77,6 @@ enum isci_request_status { dead = 0x07 }; -enum sci_request_protocol { - SCIC_NO_PROTOCOL, - SCIC_SMP_PROTOCOL, - SCIC_SSP_PROTOCOL, - SCIC_STP_PROTOCOL -}; /* XXX remove me, use sas_task.{dev|task_proto} instead */; - /** * isci_stp_request - extra request infrastructure to handle pio/atapi protocol * @pio_len - number of bytes requested at PIO setup @@ -140,7 +133,7 @@ struct isci_request { struct isci_host *owning_controller; struct isci_remote_device *target_device; u16 io_tag; - enum sci_request_protocol protocol; + enum sas_protocol protocol; u32 scu_status; /* hardware result */ u32 sci_status; /* upper layer disposition */ u32 post_context; diff --git a/include/scsi/sas.h b/include/scsi/sas.h index a577a83..be3eb0b 100644 --- a/include/scsi/sas.h +++ b/include/scsi/sas.h @@ -103,6 +103,7 @@ enum sas_dev_type { }; enum sas_protocol { + SAS_PROTOCOL_NONE = 0, SAS_PROTOCOL_SATA = 0x01, SAS_PROTOCOL_SMP = 0x02, SAS_PROTOCOL_STP = 0x04, -- cgit v1.1 From 944b787d0a469a376f4d6699eb01138823197513 Mon Sep 17 00:00:00 2001 From: Tom Jackson Date: Fri, 24 Feb 2012 09:38:49 +0000 Subject: isci: Don't filter BROADCAST CHANGE primitives Per the SAS spec, several types of BROADCAST CHANGE primitives must cause re-discovery of the originating expander. Only the standard BROADCAST CHANGE primitive was being sent to the LIBSAS layer. The other BC primitives have been added to the sci_phy_event_handler() Signed-off-by: Tom Jackson Signed-off-by: Dan Williams --- drivers/scsi/isci/phy.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index c685ab0..474330f 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -875,12 +875,19 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; case SCU_EVENT_BROADCAST_CHANGE: + case SCU_EVENT_BROADCAST_SES: + case SCU_EVENT_BROADCAST_RESERVED0: + case SCU_EVENT_BROADCAST_RESERVED1: + case SCU_EVENT_BROADCAST_EXPANDER: + case SCU_EVENT_BROADCAST_AEN: /* Broadcast change received. Notify the port. */ if (phy_get_non_dummy_port(iphy) != NULL) sci_port_broadcast_change_received(iphy->owning_port, iphy); else iphy->bcn_received_while_port_unassigned = true; break; + case SCU_EVENT_BROADCAST_RESERVED3: + case SCU_EVENT_BROADCAST_RESERVED4: default: phy_event_warn(iphy, state, event_code); return SCI_FAILURE_INVALID_STATE; -- cgit v1.1 From 1844e4789fe5c97a9ff3bb82628111abbe7cc846 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 15 Feb 2012 13:20:31 -0800 Subject: isci: kill ->status, and ->state_lock in isci_host They serve no incremental purpose over the existing sas_ha state. Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 11 ----------- drivers/scsi/isci/host.h | 23 ----------------------- 2 files changed, 34 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 83886a2..d647b07 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -642,7 +642,6 @@ static void isci_host_start_complete(struct isci_host *ihost, enum sci_status co if (completion_status != SCI_SUCCESS) dev_info(&ihost->pdev->dev, "controller start timed out, continuing...\n"); - isci_host_change_state(ihost, isci_ready); clear_bit(IHOST_START_PENDING, &ihost->flags); wake_up(&ihost->eventq); } @@ -657,12 +656,7 @@ int isci_host_scan_finished(struct Scsi_Host *shost, unsigned long time) sas_drain_work(ha); - dev_dbg(&ihost->pdev->dev, - "%s: ihost->status = %d, time = %ld\n", - __func__, isci_host_get_state(ihost), time); - return 1; - } /** @@ -1054,7 +1048,6 @@ void isci_host_scan_start(struct Scsi_Host *shost) static void isci_host_stop_complete(struct isci_host *ihost, enum sci_status completion_status) { - isci_host_change_state(ihost, isci_stopped); sci_controller_disable_interrupts(ihost); clear_bit(IHOST_STOP_PENDING, &ihost->flags); wake_up(&ihost->eventq); @@ -1262,7 +1255,6 @@ void isci_host_deinit(struct isci_host *ihost) for (i = 0; i < isci_gpio_count(ihost); i++) writel(SGPIO_HW_CONTROL, &ihost->scu_registers->peg0.sgpio.output_data_select[i]); - isci_host_change_state(ihost, isci_stopping); for (i = 0; i < SCI_MAX_PORTS; i++) { struct isci_port *iport = &ihost->ports[i]; struct isci_remote_device *idev, *d; @@ -2494,12 +2486,9 @@ int isci_host_init(struct isci_host *ihost) struct sci_user_parameters sci_user_params; struct isci_pci_info *pci_info = to_pci_info(ihost->pdev); - spin_lock_init(&ihost->state_lock); spin_lock_init(&ihost->scic_lock); init_waitqueue_head(&ihost->eventq); - isci_host_change_state(ihost, isci_starting); - status = sci_controller_construct(ihost, scu_base(ihost), smu_base(ihost)); diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index a9679ee..81485b4 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -191,9 +191,7 @@ struct isci_host { struct asd_sas_port sas_ports[SCI_MAX_PORTS]; struct sas_ha_struct sas_ha; - spinlock_t state_lock; struct pci_dev *pdev; - enum isci_status status; #define IHOST_START_PENDING 0 #define IHOST_STOP_PENDING 1 unsigned long flags; @@ -315,27 +313,6 @@ static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev) id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \ ihost = to_pci_info(pdev)->hosts[++id]) -static inline enum isci_status isci_host_get_state(struct isci_host *isci_host) -{ - return isci_host->status; -} - -static inline void isci_host_change_state(struct isci_host *isci_host, - enum isci_status status) -{ - unsigned long flags; - - dev_dbg(&isci_host->pdev->dev, - "%s: isci_host = %p, state = 0x%x", - __func__, - isci_host, - status); - spin_lock_irqsave(&isci_host->state_lock, flags); - isci_host->status = status; - spin_unlock_irqrestore(&isci_host->state_lock, flags); - -} - static inline void wait_for_start(struct isci_host *ihost) { wait_event(ihost->eventq, !test_bit(IHOST_START_PENDING, &ihost->flags)); -- cgit v1.1 From ae904d15cf344bcb426f63982016f6bacc45825b Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Fri, 17 Feb 2012 16:30:47 -0800 Subject: isci: kill isci_port.domain_dev_list Another unused field, and isci_port_init is overkill. Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 8 ++++++-- drivers/scsi/isci/port.c | 7 ------- drivers/scsi/isci/port.h | 6 ------ 3 files changed, 6 insertions(+), 15 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index d647b07..bbec1982 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -2557,8 +2557,12 @@ int isci_host_init(struct isci_host *ihost) if (err) return err; - for (i = 0; i < SCI_MAX_PORTS; i++) - isci_port_init(&ihost->ports[i], ihost, i); + for (i = 0; i < SCI_MAX_PORTS; i++) { + struct isci_port *iport = &ihost->ports[i]; + + INIT_LIST_HEAD(&iport->remote_dev_list); + iport->isci_host = ihost; + } for (i = 0; i < SCI_MAX_PHYS; i++) isci_phy_init(&ihost->phys[i], ihost, i); diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 923579f..6ef4bd9 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -1606,13 +1606,6 @@ void sci_port_construct(struct isci_port *iport, u8 index, iport->phy_table[index] = NULL; } -void isci_port_init(struct isci_port *iport, struct isci_host *ihost, int index) -{ - INIT_LIST_HEAD(&iport->remote_dev_list); - INIT_LIST_HEAD(&iport->domain_dev_list); - iport->isci_host = ihost; -} - void sci_port_broadcast_change_received(struct isci_port *iport, struct isci_phy *iphy) { struct isci_host *ihost = iport->owning_controller; diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index 6b56240..f8bd1e8 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -97,7 +97,6 @@ enum isci_status { struct isci_port { struct isci_host *isci_host; struct list_head remote_dev_list; - struct list_head domain_dev_list; #define IPORT_RESET_PENDING 0 unsigned long state; enum sci_status hard_reset_status; @@ -273,11 +272,6 @@ void sci_port_get_attached_sas_address( void isci_port_formed(struct asd_sas_phy *); void isci_port_deformed(struct asd_sas_phy *); -void isci_port_init( - struct isci_port *port, - struct isci_host *host, - int index); - int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *iport, struct isci_phy *iphy); int isci_ata_check_ready(struct domain_device *dev); -- cgit v1.1 From abec912d71c44bbd642ce12ad98aab76f5a53163 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 15 Feb 2012 13:58:42 -0800 Subject: isci: refactor initialization for S3/S4 Based on an original implementation by Ed Nadolski and Artur Wojcik In preparation for S3/S4 support refactor initialization so that driver-load and resume-from-suspend can share the common init path of isci_host_init(). Organize the initialization into objects that are self-contained to the driver (initialized by isci_host_init) versus those that have some upward registration (initialized at allocation time asd_sas_phy, asd_sas_port, dma allocations). The largest change is moving the the validation of the oem and module parameters from isci_host_init() to isci_host_alloc(). The S3/S4 approach being taken is that libsas will be tasked with remembering the state of the domain and the lldd is free to be forgetful. In the case of isci we'll just re-init using a subset of the normal driver load path. [clean up some unused / mis-indented function definitions in host.h] Signed-off-by: Ed Nadolski Signed-off-by: Artur Wojcik Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 313 +++++--------------------- drivers/scsi/isci/host.h | 71 ++---- drivers/scsi/isci/init.c | 199 ++++++++++++++-- drivers/scsi/isci/probe_roms.c | 12 - drivers/scsi/isci/probe_roms.h | 2 - drivers/scsi/isci/request.c | 4 +- drivers/scsi/isci/unsolicited_frame_control.c | 30 +-- drivers/scsi/isci/unsolicited_frame_control.h | 6 +- 8 files changed, 277 insertions(+), 360 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index bbec1982..0fe372f 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1074,7 +1074,7 @@ static void sci_controller_completion_handler(struct isci_host *ihost) * @data: This parameter specifies the ISCI host object * */ -static void isci_host_completion_routine(unsigned long data) +void isci_host_completion_routine(unsigned long data) { struct isci_host *ihost = (struct isci_host *)data; struct list_head completed_request_list; @@ -1317,29 +1317,6 @@ static void __iomem *smu_base(struct isci_host *isci_host) return pcim_iomap_table(pdev)[SCI_SMU_BAR * 2] + SCI_SMU_BAR_SIZE * id; } -static void isci_user_parameters_get(struct sci_user_parameters *u) -{ - int i; - - for (i = 0; i < SCI_MAX_PHYS; i++) { - struct sci_phy_user_params *u_phy = &u->phys[i]; - - u_phy->max_speed_generation = phy_gen; - - /* we are not exporting these for now */ - u_phy->align_insertion_frequency = 0x7f; - u_phy->in_connection_align_insertion_frequency = 0xff; - u_phy->notify_enable_spin_up_insertion_frequency = 0x33; - } - - u->stp_inactivity_timeout = stp_inactive_to; - u->ssp_inactivity_timeout = ssp_inactive_to; - u->stp_max_occupancy_timeout = stp_max_occ_to; - u->ssp_max_occupancy_timeout = ssp_max_occ_to; - u->no_outbound_task_timeout = no_outbound_task_to; - u->max_concurr_spinup = max_concurr_spinup; -} - static void sci_controller_initial_state_enter(struct sci_base_state_machine *sm) { struct isci_host *ihost = container_of(sm, typeof(*ihost), sm); @@ -1648,55 +1625,6 @@ static const struct sci_base_state sci_controller_state_table[] = { [SCIC_FAILED] = {} }; -static void sci_controller_set_default_config_parameters(struct isci_host *ihost) -{ - /* these defaults are overridden by the platform / firmware */ - u16 index; - - /* Default to APC mode. */ - ihost->oem_parameters.controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; - - /* Default to APC mode. */ - ihost->oem_parameters.controller.max_concurr_spin_up = 1; - - /* Default to no SSC operation. */ - ihost->oem_parameters.controller.do_enable_ssc = false; - - /* Default to short cables on all phys. */ - ihost->oem_parameters.controller.cable_selection_mask = 0; - - /* Initialize all of the port parameter information to narrow ports. */ - for (index = 0; index < SCI_MAX_PORTS; index++) { - ihost->oem_parameters.ports[index].phy_mask = 0; - } - - /* Initialize all of the phy parameter information. */ - for (index = 0; index < SCI_MAX_PHYS; index++) { - /* Default to 3G (i.e. Gen 2). */ - ihost->user_parameters.phys[index].max_speed_generation = - SCIC_SDS_PARM_GEN2_SPEED; - - /* the frequencies cannot be 0 */ - ihost->user_parameters.phys[index].align_insertion_frequency = 0x7f; - ihost->user_parameters.phys[index].in_connection_align_insertion_frequency = 0xff; - ihost->user_parameters.phys[index].notify_enable_spin_up_insertion_frequency = 0x33; - - /* - * Previous Vitesse based expanders had a arbitration issue that - * is worked around by having the upper 32-bits of SAS address - * with a value greater then the Vitesse company identifier. - * Hence, usage of 0x5FCFFFFF. */ - ihost->oem_parameters.phys[index].sas_address.low = 0x1 + ihost->id; - ihost->oem_parameters.phys[index].sas_address.high = 0x5FCFFFFF; - } - - ihost->user_parameters.stp_inactivity_timeout = 5; - ihost->user_parameters.ssp_inactivity_timeout = 5; - ihost->user_parameters.stp_max_occupancy_timeout = 5; - ihost->user_parameters.ssp_max_occupancy_timeout = 20; - ihost->user_parameters.no_outbound_task_timeout = 2; -} - static void controller_timeout(unsigned long data) { struct sci_timer *tmr = (struct sci_timer *)data; @@ -1753,9 +1681,6 @@ static enum sci_status sci_controller_construct(struct isci_host *ihost, sci_init_timer(&ihost->timer, controller_timeout); - /* Initialize the User and OEM parameters to default values. */ - sci_controller_set_default_config_parameters(ihost); - return sci_controller_reset(ihost); } @@ -1835,27 +1760,6 @@ int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version) return 0; } -static enum sci_status sci_oem_parameters_set(struct isci_host *ihost) -{ - u32 state = ihost->sm.current_state_id; - struct isci_pci_info *pci_info = to_pci_info(ihost->pdev); - - if (state == SCIC_RESET || - state == SCIC_INITIALIZING || - state == SCIC_INITIALIZED) { - u8 oem_version = pci_info->orom ? pci_info->orom->hdr.version : - ISCI_ROM_VER_1_0; - - if (sci_oem_parameters_validate(&ihost->oem_parameters, - oem_version)) - return SCI_FAILURE_INVALID_PARAMETER_VALUE; - - return SCI_SUCCESS; - } - - return SCI_FAILURE_INVALID_STATE; -} - static u8 max_spin_up(struct isci_host *ihost) { if (ihost->user_parameters.max_concurr_spinup) @@ -2372,96 +2276,77 @@ static enum sci_status sci_controller_initialize(struct isci_host *ihost) return result; } -static enum sci_status sci_user_parameters_set(struct isci_host *ihost, - struct sci_user_parameters *sci_parms) -{ - u32 state = ihost->sm.current_state_id; - - if (state == SCIC_RESET || - state == SCIC_INITIALIZING || - state == SCIC_INITIALIZED) { - u16 index; - - /* - * Validate the user parameters. If they are not legal, then - * return a failure. - */ - for (index = 0; index < SCI_MAX_PHYS; index++) { - struct sci_phy_user_params *user_phy; - - user_phy = &sci_parms->phys[index]; - - if (!((user_phy->max_speed_generation <= - SCIC_SDS_PARM_MAX_SPEED) && - (user_phy->max_speed_generation > - SCIC_SDS_PARM_NO_SPEED))) - return SCI_FAILURE_INVALID_PARAMETER_VALUE; - - if (user_phy->in_connection_align_insertion_frequency < - 3) - return SCI_FAILURE_INVALID_PARAMETER_VALUE; - - if ((user_phy->in_connection_align_insertion_frequency < - 3) || - (user_phy->align_insertion_frequency == 0) || - (user_phy-> - notify_enable_spin_up_insertion_frequency == - 0)) - return SCI_FAILURE_INVALID_PARAMETER_VALUE; - } - - if ((sci_parms->stp_inactivity_timeout == 0) || - (sci_parms->ssp_inactivity_timeout == 0) || - (sci_parms->stp_max_occupancy_timeout == 0) || - (sci_parms->ssp_max_occupancy_timeout == 0) || - (sci_parms->no_outbound_task_timeout == 0)) - return SCI_FAILURE_INVALID_PARAMETER_VALUE; - - memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); - - return SCI_SUCCESS; - } - - return SCI_FAILURE_INVALID_STATE; -} - -static int sci_controller_mem_init(struct isci_host *ihost) +static int sci_controller_dma_alloc(struct isci_host *ihost) { struct device *dev = &ihost->pdev->dev; - dma_addr_t dma; size_t size; - int err; + int i; + + /* detect re-initialization */ + if (ihost->completion_queue) + return 0; size = SCU_MAX_COMPLETION_QUEUE_ENTRIES * sizeof(u32); - ihost->completion_queue = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL); + ihost->completion_queue = dmam_alloc_coherent(dev, size, &ihost->cq_dma, + GFP_KERNEL); if (!ihost->completion_queue) return -ENOMEM; - writel(lower_32_bits(dma), &ihost->smu_registers->completion_queue_lower); - writel(upper_32_bits(dma), &ihost->smu_registers->completion_queue_upper); - size = ihost->remote_node_entries * sizeof(union scu_remote_node_context); - ihost->remote_node_context_table = dmam_alloc_coherent(dev, size, &dma, + ihost->remote_node_context_table = dmam_alloc_coherent(dev, size, &ihost->rnc_dma, GFP_KERNEL); + if (!ihost->remote_node_context_table) return -ENOMEM; - writel(lower_32_bits(dma), &ihost->smu_registers->remote_node_context_lower); - writel(upper_32_bits(dma), &ihost->smu_registers->remote_node_context_upper); - size = ihost->task_context_entries * sizeof(struct scu_task_context), - ihost->task_context_table = dmam_alloc_coherent(dev, size, &dma, GFP_KERNEL); + ihost->task_context_table = dmam_alloc_coherent(dev, size, &ihost->tc_dma, + GFP_KERNEL); if (!ihost->task_context_table) return -ENOMEM; - ihost->task_context_dma = dma; - writel(lower_32_bits(dma), &ihost->smu_registers->host_task_table_lower); - writel(upper_32_bits(dma), &ihost->smu_registers->host_task_table_upper); + size = SCI_UFI_TOTAL_SIZE; + ihost->ufi_buf = dmam_alloc_coherent(dev, size, &ihost->ufi_dma, GFP_KERNEL); + if (!ihost->ufi_buf) + return -ENOMEM; + + for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) { + struct isci_request *ireq; + dma_addr_t dma; + + ireq = dmam_alloc_coherent(dev, sizeof(*ireq), &dma, GFP_KERNEL); + if (!ireq) + return -ENOMEM; + + ireq->tc = &ihost->task_context_table[i]; + ireq->owning_controller = ihost; + spin_lock_init(&ireq->state_lock); + ireq->request_daddr = dma; + ireq->isci_host = ihost; + ihost->reqs[i] = ireq; + } + + return 0; +} + +static int sci_controller_mem_init(struct isci_host *ihost) +{ + int err = sci_controller_dma_alloc(ihost); - err = sci_unsolicited_frame_control_construct(ihost); if (err) return err; + writel(lower_32_bits(ihost->cq_dma), &ihost->smu_registers->completion_queue_lower); + writel(upper_32_bits(ihost->cq_dma), &ihost->smu_registers->completion_queue_upper); + + writel(lower_32_bits(ihost->rnc_dma), &ihost->smu_registers->remote_node_context_lower); + writel(upper_32_bits(ihost->rnc_dma), &ihost->smu_registers->remote_node_context_upper); + + writel(lower_32_bits(ihost->tc_dma), &ihost->smu_registers->host_task_table_lower); + writel(upper_32_bits(ihost->tc_dma), &ihost->smu_registers->host_task_table_upper); + + sci_unsolicited_frame_control_construct(ihost); + /* * Inform the silicon as to the location of the UF headers and * address table. @@ -2479,19 +2364,20 @@ static int sci_controller_mem_init(struct isci_host *ihost) return 0; } +/** + * isci_host_init - (re-)initialize hardware and internal (private) state + * @ihost: host to init + * + * Any public facing objects (like asd_sas_port, and asd_sas_phys), or + * one-time initialization objects like locks and waitqueues, are + * not touched (they are initialized in isci_host_alloc) + */ int isci_host_init(struct isci_host *ihost) { - int err = 0, i; + int i, err; enum sci_status status; - struct sci_user_parameters sci_user_params; - struct isci_pci_info *pci_info = to_pci_info(ihost->pdev); - - spin_lock_init(&ihost->scic_lock); - init_waitqueue_head(&ihost->eventq); - - status = sci_controller_construct(ihost, scu_base(ihost), - smu_base(ihost)); + status = sci_controller_construct(ihost, scu_base(ihost), smu_base(ihost)); if (status != SCI_SUCCESS) { dev_err(&ihost->pdev->dev, "%s: sci_controller_construct failed - status = %x\n", @@ -2500,48 +2386,6 @@ int isci_host_init(struct isci_host *ihost) return -ENODEV; } - ihost->sas_ha.dev = &ihost->pdev->dev; - ihost->sas_ha.lldd_ha = ihost; - - /* - * grab initial values stored in the controller object for OEM and USER - * parameters - */ - isci_user_parameters_get(&sci_user_params); - status = sci_user_parameters_set(ihost, &sci_user_params); - if (status != SCI_SUCCESS) { - dev_warn(&ihost->pdev->dev, - "%s: sci_user_parameters_set failed\n", - __func__); - return -ENODEV; - } - - /* grab any OEM parameters specified in orom */ - if (pci_info->orom) { - status = isci_parse_oem_parameters(&ihost->oem_parameters, - pci_info->orom, - ihost->id); - if (status != SCI_SUCCESS) { - dev_warn(&ihost->pdev->dev, - "parsing firmware oem parameters failed\n"); - return -EINVAL; - } - } - - status = sci_oem_parameters_set(ihost); - if (status != SCI_SUCCESS) { - dev_warn(&ihost->pdev->dev, - "%s: sci_oem_parameters_set failed\n", - __func__); - return -ENODEV; - } - - tasklet_init(&ihost->completion_tasklet, - isci_host_completion_routine, (unsigned long)ihost); - - INIT_LIST_HEAD(&ihost->requests_to_complete); - INIT_LIST_HEAD(&ihost->requests_to_errorback); - spin_lock_irq(&ihost->scic_lock); status = sci_controller_initialize(ihost); spin_unlock_irq(&ihost->scic_lock); @@ -2557,47 +2401,12 @@ int isci_host_init(struct isci_host *ihost) if (err) return err; - for (i = 0; i < SCI_MAX_PORTS; i++) { - struct isci_port *iport = &ihost->ports[i]; - - INIT_LIST_HEAD(&iport->remote_dev_list); - iport->isci_host = ihost; - } - - for (i = 0; i < SCI_MAX_PHYS; i++) - isci_phy_init(&ihost->phys[i], ihost, i); - /* enable sgpio */ writel(1, &ihost->scu_registers->peg0.sgpio.interface_control); for (i = 0; i < isci_gpio_count(ihost); i++) writel(SGPIO_HW_CONTROL, &ihost->scu_registers->peg0.sgpio.output_data_select[i]); writel(0, &ihost->scu_registers->peg0.sgpio.vendor_specific_code); - for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { - struct isci_remote_device *idev = &ihost->devices[i]; - - INIT_LIST_HEAD(&idev->reqs_in_process); - INIT_LIST_HEAD(&idev->node); - } - - for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) { - struct isci_request *ireq; - dma_addr_t dma; - - ireq = dmam_alloc_coherent(&ihost->pdev->dev, - sizeof(struct isci_request), &dma, - GFP_KERNEL); - if (!ireq) - return -ENOMEM; - - ireq->tc = &ihost->task_context_table[i]; - ireq->owning_controller = ihost; - spin_lock_init(&ireq->state_lock); - ireq->request_daddr = dma; - ireq->isci_host = ihost; - ihost->reqs[i] = ireq; - } - return 0; } diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 81485b4..4695162 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -158,13 +158,17 @@ struct isci_host { struct sci_power_control power_control; u8 io_request_sequence[SCI_MAX_IO_REQUESTS]; struct scu_task_context *task_context_table; - dma_addr_t task_context_dma; + dma_addr_t tc_dma; union scu_remote_node_context *remote_node_context_table; + dma_addr_t rnc_dma; u32 *completion_queue; + dma_addr_t cq_dma; u32 completion_queue_get; u32 logical_port_entries; u32 remote_node_entries; u32 task_context_entries; + void *ufi_buf; + dma_addr_t ufi_dma; struct sci_unsolicited_frame_control uf_control; /* phy startup */ @@ -452,36 +456,17 @@ void sci_controller_free_remote_node_context( struct isci_remote_device *idev, u16 node_id); -struct isci_request *sci_request_by_tag(struct isci_host *ihost, - u16 io_tag); - -void sci_controller_power_control_queue_insert( - struct isci_host *ihost, - struct isci_phy *iphy); - -void sci_controller_power_control_queue_remove( - struct isci_host *ihost, - struct isci_phy *iphy); - -void sci_controller_link_up( - struct isci_host *ihost, - struct isci_port *iport, - struct isci_phy *iphy); - -void sci_controller_link_down( - struct isci_host *ihost, - struct isci_port *iport, - struct isci_phy *iphy); - -void sci_controller_remote_device_stopped( - struct isci_host *ihost, - struct isci_remote_device *idev); - -void sci_controller_copy_task_context( - struct isci_host *ihost, - struct isci_request *ireq); - -void sci_controller_register_setup(struct isci_host *ihost); +struct isci_request *sci_request_by_tag(struct isci_host *ihost, u16 io_tag); +void sci_controller_power_control_queue_insert(struct isci_host *ihost, + struct isci_phy *iphy); +void sci_controller_power_control_queue_remove(struct isci_host *ihost, + struct isci_phy *iphy); +void sci_controller_link_up(struct isci_host *ihost, struct isci_port *iport, + struct isci_phy *iphy); +void sci_controller_link_down(struct isci_host *ihost, struct isci_port *iport, + struct isci_phy *iphy); +void sci_controller_remote_device_stopped(struct isci_host *ihost, + struct isci_remote_device *idev); enum sci_status sci_controller_continue_io(struct isci_request *ireq); int isci_host_scan_finished(struct Scsi_Host *, unsigned long); @@ -491,27 +476,9 @@ enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag); void isci_tci_free(struct isci_host *ihost, u16 tci); int isci_host_init(struct isci_host *); - -void isci_host_init_controller_names( - struct isci_host *isci_host, - unsigned int controller_idx); - -void isci_host_deinit( - struct isci_host *); - -void isci_host_port_link_up( - struct isci_host *, - struct isci_port *, - struct isci_phy *); -int isci_host_dev_found(struct domain_device *); - -void isci_host_remote_device_start_complete( - struct isci_host *, - struct isci_remote_device *, - enum sci_status); - -void sci_controller_disable_interrupts( - struct isci_host *ihost); +void isci_host_completion_routine(unsigned long data); +void isci_host_deinit(struct isci_host *); +void sci_controller_disable_interrupts(struct isci_host *ihost); enum sci_status sci_controller_start_io( struct isci_host *ihost, diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 5137db5..eda4385 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -397,38 +397,203 @@ static int isci_setup_interrupts(struct pci_dev *pdev) return err; } +static void isci_user_parameters_get(struct sci_user_parameters *u) +{ + int i; + + for (i = 0; i < SCI_MAX_PHYS; i++) { + struct sci_phy_user_params *u_phy = &u->phys[i]; + + u_phy->max_speed_generation = phy_gen; + + /* we are not exporting these for now */ + u_phy->align_insertion_frequency = 0x7f; + u_phy->in_connection_align_insertion_frequency = 0xff; + u_phy->notify_enable_spin_up_insertion_frequency = 0x33; + } + + u->stp_inactivity_timeout = stp_inactive_to; + u->ssp_inactivity_timeout = ssp_inactive_to; + u->stp_max_occupancy_timeout = stp_max_occ_to; + u->ssp_max_occupancy_timeout = ssp_max_occ_to; + u->no_outbound_task_timeout = no_outbound_task_to; + u->max_concurr_spinup = max_concurr_spinup; +} + +static enum sci_status sci_user_parameters_set(struct isci_host *ihost, + struct sci_user_parameters *sci_parms) +{ + u16 index; + + /* + * Validate the user parameters. If they are not legal, then + * return a failure. + */ + for (index = 0; index < SCI_MAX_PHYS; index++) { + struct sci_phy_user_params *u; + + u = &sci_parms->phys[index]; + + if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && + (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) + return SCI_FAILURE_INVALID_PARAMETER_VALUE; + + if (u->in_connection_align_insertion_frequency < 3) + return SCI_FAILURE_INVALID_PARAMETER_VALUE; + + if ((u->in_connection_align_insertion_frequency < 3) || + (u->align_insertion_frequency == 0) || + (u->notify_enable_spin_up_insertion_frequency == 0)) + return SCI_FAILURE_INVALID_PARAMETER_VALUE; + } + + if ((sci_parms->stp_inactivity_timeout == 0) || + (sci_parms->ssp_inactivity_timeout == 0) || + (sci_parms->stp_max_occupancy_timeout == 0) || + (sci_parms->ssp_max_occupancy_timeout == 0) || + (sci_parms->no_outbound_task_timeout == 0)) + return SCI_FAILURE_INVALID_PARAMETER_VALUE; + + memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); + + return SCI_SUCCESS; +} + +static void sci_oem_defaults(struct isci_host *ihost) +{ + /* these defaults are overridden by the platform / firmware */ + struct sci_user_parameters *user = &ihost->user_parameters; + struct sci_oem_params *oem = &ihost->oem_parameters; + int i; + + /* Default to APC mode. */ + oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; + + /* Default to APC mode. */ + oem->controller.max_concurr_spin_up = 1; + + /* Default to no SSC operation. */ + oem->controller.do_enable_ssc = false; + + /* Default to short cables on all phys. */ + oem->controller.cable_selection_mask = 0; + + /* Initialize all of the port parameter information to narrow ports. */ + for (i = 0; i < SCI_MAX_PORTS; i++) + oem->ports[i].phy_mask = 0; + + /* Initialize all of the phy parameter information. */ + for (i = 0; i < SCI_MAX_PHYS; i++) { + /* Default to 3G (i.e. Gen 2). */ + user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; + + /* the frequencies cannot be 0 */ + user->phys[i].align_insertion_frequency = 0x7f; + user->phys[i].in_connection_align_insertion_frequency = 0xff; + user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; + + /* Previous Vitesse based expanders had a arbitration issue that + * is worked around by having the upper 32-bits of SAS address + * with a value greater then the Vitesse company identifier. + * Hence, usage of 0x5FCFFFFF. + */ + oem->phys[i].sas_address.low = 0x1 + ihost->id; + oem->phys[i].sas_address.high = 0x5FCFFFFF; + } + + user->stp_inactivity_timeout = 5; + user->ssp_inactivity_timeout = 5; + user->stp_max_occupancy_timeout = 5; + user->ssp_max_occupancy_timeout = 20; + user->no_outbound_task_timeout = 2; +} + static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) { - struct isci_host *isci_host; + struct isci_orom *orom = to_pci_info(pdev)->orom; + struct sci_user_parameters sci_user_params; + u8 oem_version = ISCI_ROM_VER_1_0; + struct isci_host *ihost; struct Scsi_Host *shost; - int err; + int err, i; - isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL); - if (!isci_host) + ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); + if (!ihost) + return NULL; + + ihost->pdev = pdev; + ihost->id = id; + spin_lock_init(&ihost->scic_lock); + init_waitqueue_head(&ihost->eventq); + ihost->sas_ha.dev = &ihost->pdev->dev; + ihost->sas_ha.lldd_ha = ihost; + tasklet_init(&ihost->completion_tasklet, + isci_host_completion_routine, (unsigned long)ihost); + + /* validate module parameters */ + /* TODO: kill struct sci_user_parameters and reference directly */ + sci_oem_defaults(ihost); + isci_user_parameters_get(&sci_user_params); + if (sci_user_parameters_set(ihost, &sci_user_params)) { + dev_warn(&pdev->dev, + "%s: sci_user_parameters_set failed\n", __func__); + return NULL; + } + + /* sanity check platform (or 'firmware') oem parameters */ + if (orom) { + if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { + dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); + return NULL; + } + ihost->oem_parameters = orom->ctrl[id]; + oem_version = orom->hdr.version; + } + + /* validate oem parameters (platform, firmware, or built-in defaults) */ + if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { + dev_warn(&pdev->dev, "oem parameter validation failed\n"); return NULL; + } + + INIT_LIST_HEAD(&ihost->requests_to_complete); + INIT_LIST_HEAD(&ihost->requests_to_errorback); + for (i = 0; i < SCI_MAX_PORTS; i++) { + struct isci_port *iport = &ihost->ports[i]; + + INIT_LIST_HEAD(&iport->remote_dev_list); + iport->isci_host = ihost; + } - isci_host->pdev = pdev; - isci_host->id = id; + for (i = 0; i < SCI_MAX_PHYS; i++) + isci_phy_init(&ihost->phys[i], ihost, i); + + for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { + struct isci_remote_device *idev = &ihost->devices[i]; + + INIT_LIST_HEAD(&idev->reqs_in_process); + INIT_LIST_HEAD(&idev->node); + } shost = scsi_host_alloc(&isci_sht, sizeof(void *)); if (!shost) return NULL; - isci_host->shost = shost; + ihost->shost = shost; dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " "{%s, %s, %s, %s}\n", - (is_cable_select_overridden() ? "* " : ""), isci_host->id, - lookup_cable_names(decode_cable_selection(isci_host, 3)), - lookup_cable_names(decode_cable_selection(isci_host, 2)), - lookup_cable_names(decode_cable_selection(isci_host, 1)), - lookup_cable_names(decode_cable_selection(isci_host, 0))); + (is_cable_select_overridden() ? "* " : ""), ihost->id, + lookup_cable_names(decode_cable_selection(ihost, 3)), + lookup_cable_names(decode_cable_selection(ihost, 2)), + lookup_cable_names(decode_cable_selection(ihost, 1)), + lookup_cable_names(decode_cable_selection(ihost, 0))); - err = isci_host_init(isci_host); + err = isci_host_init(ihost); if (err) goto err_shost; - SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha; - isci_host->sas_ha.core.shost = shost; + SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; + ihost->sas_ha.core.shost = shost; shost->transportt = isci_transport_template; shost->max_id = ~0; @@ -439,11 +604,11 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) if (err) goto err_shost; - err = isci_register_sas_ha(isci_host); + err = isci_register_sas_ha(ihost); if (err) goto err_shost_remove; - return isci_host; + return ihost; err_shost_remove: scsi_remove_host(shost); diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c index 9b8117b..4d95654 100644 --- a/drivers/scsi/isci/probe_roms.c +++ b/drivers/scsi/isci/probe_roms.c @@ -112,18 +112,6 @@ struct isci_orom *isci_request_oprom(struct pci_dev *pdev) return rom; } -enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem, - struct isci_orom *orom, int scu_index) -{ - /* check for valid inputs */ - if (scu_index < 0 || scu_index >= SCI_MAX_CONTROLLERS || - scu_index > orom->hdr.num_elements || !oem) - return -EINVAL; - - *oem = orom->ctrl[scu_index]; - return 0; -} - struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw) { struct isci_orom *orom = NULL, *data; diff --git a/drivers/scsi/isci/probe_roms.h b/drivers/scsi/isci/probe_roms.h index bb0e9d4..e08b578 100644 --- a/drivers/scsi/isci/probe_roms.h +++ b/drivers/scsi/isci/probe_roms.h @@ -156,8 +156,6 @@ int sci_oem_parameters_validate(struct sci_oem_params *oem, u8 version); struct isci_orom; struct isci_orom *isci_request_oprom(struct pci_dev *pdev); -enum sci_status isci_parse_oem_parameters(struct sci_oem_params *oem, - struct isci_orom *orom, int scu_index); struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw); struct isci_orom *isci_get_efi_var(struct pci_dev *pdev); diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 835ede8..dcd26ea 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -92,11 +92,11 @@ static dma_addr_t to_sgl_element_pair_dma(struct isci_host *ihost, if (idx == 0) { offset = (void *) &ireq->tc->sgl_pair_ab - (void *) &ihost->task_context_table[0]; - return ihost->task_context_dma + offset; + return ihost->tc_dma + offset; } else if (idx == 1) { offset = (void *) &ireq->tc->sgl_pair_cd - (void *) &ihost->task_context_table[0]; - return ihost->task_context_dma + offset; + return ihost->tc_dma + offset; } return sci_io_request_get_dma_addr(ireq, &ireq->sg_table[idx - 2]); diff --git a/drivers/scsi/isci/unsolicited_frame_control.c b/drivers/scsi/isci/unsolicited_frame_control.c index 16f88ab..04a6d0d 100644 --- a/drivers/scsi/isci/unsolicited_frame_control.c +++ b/drivers/scsi/isci/unsolicited_frame_control.c @@ -57,31 +57,19 @@ #include "unsolicited_frame_control.h" #include "registers.h" -int sci_unsolicited_frame_control_construct(struct isci_host *ihost) +void sci_unsolicited_frame_control_construct(struct isci_host *ihost) { struct sci_unsolicited_frame_control *uf_control = &ihost->uf_control; struct sci_unsolicited_frame *uf; - u32 buf_len, header_len, i; - dma_addr_t dma; - size_t size; - void *virt; - - /* - * Prepare all of the memory sizes for the UF headers, UF address - * table, and UF buffers themselves. - */ - buf_len = SCU_MAX_UNSOLICITED_FRAMES * SCU_UNSOLICITED_FRAME_BUFFER_SIZE; - header_len = SCU_MAX_UNSOLICITED_FRAMES * sizeof(struct scu_unsolicited_frame_header); - size = buf_len + header_len + SCU_MAX_UNSOLICITED_FRAMES * sizeof(uf_control->address_table.array[0]); + dma_addr_t dma = ihost->ufi_dma; + void *virt = ihost->ufi_buf; + int i; /* * The Unsolicited Frame buffers are set at the start of the UF * memory descriptor entry. The headers and address table will be * placed after the buffers. */ - virt = dmam_alloc_coherent(&ihost->pdev->dev, size, &dma, GFP_KERNEL); - if (!virt) - return -ENOMEM; /* * Program the location of the UF header table into the SCU. @@ -93,8 +81,8 @@ int sci_unsolicited_frame_control_construct(struct isci_host *ihost) * headers, since we program the UF address table pointers to * NULL. */ - uf_control->headers.physical_address = dma + buf_len; - uf_control->headers.array = virt + buf_len; + uf_control->headers.physical_address = dma + SCI_UFI_BUF_SIZE; + uf_control->headers.array = virt + SCI_UFI_BUF_SIZE; /* * Program the location of the UF address table into the SCU. @@ -103,8 +91,8 @@ int sci_unsolicited_frame_control_construct(struct isci_host *ihost) * byte boundary already due to above programming headers being on a * 64-bit boundary and headers are on a 64-bytes in size. */ - uf_control->address_table.physical_address = dma + buf_len + header_len; - uf_control->address_table.array = virt + buf_len + header_len; + uf_control->address_table.physical_address = dma + SCI_UFI_BUF_SIZE + SCI_UFI_HDR_SIZE; + uf_control->address_table.array = virt + SCI_UFI_BUF_SIZE + SCI_UFI_HDR_SIZE; uf_control->get = 0; /* @@ -135,8 +123,6 @@ int sci_unsolicited_frame_control_construct(struct isci_host *ihost) virt += SCU_UNSOLICITED_FRAME_BUFFER_SIZE; dma += SCU_UNSOLICITED_FRAME_BUFFER_SIZE; } - - return 0; } enum sci_status sci_unsolicited_frame_control_get_header(struct sci_unsolicited_frame_control *uf_control, diff --git a/drivers/scsi/isci/unsolicited_frame_control.h b/drivers/scsi/isci/unsolicited_frame_control.h index 75d8966..1bc551e 100644 --- a/drivers/scsi/isci/unsolicited_frame_control.h +++ b/drivers/scsi/isci/unsolicited_frame_control.h @@ -257,9 +257,13 @@ struct sci_unsolicited_frame_control { }; +#define SCI_UFI_BUF_SIZE (SCU_MAX_UNSOLICITED_FRAMES * SCU_UNSOLICITED_FRAME_BUFFER_SIZE) +#define SCI_UFI_HDR_SIZE (SCU_MAX_UNSOLICITED_FRAMES * sizeof(struct scu_unsolicited_frame_header)) +#define SCI_UFI_TOTAL_SIZE (SCI_UFI_BUF_SIZE + SCI_UFI_HDR_SIZE + SCU_MAX_UNSOLICITED_FRAMES * sizeof(u64)) + struct isci_host; -int sci_unsolicited_frame_control_construct(struct isci_host *ihost); +void sci_unsolicited_frame_control_construct(struct isci_host *ihost); enum sci_status sci_unsolicited_frame_control_get_header( struct sci_unsolicited_frame_control *uf_control, -- cgit v1.1 From eb608c3cb3f0a6b99252ea6a69fc0d2bbecf1f4f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 23 Feb 2012 01:12:10 -0800 Subject: isci: fix controller stop 1/ notify waiters when controller stop completes (fixes 10 second stall unloading the driver) 2/ make sure phy stop is after port and device stop Cc: Richard Boyd Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 99 ++++++++++++++++++++++++++---------------------- drivers/scsi/isci/host.h | 8 +--- 2 files changed, 55 insertions(+), 52 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 0fe372f..95c3da6 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1046,7 +1046,7 @@ void isci_host_scan_start(struct Scsi_Host *shost) spin_unlock_irq(&ihost->scic_lock); } -static void isci_host_stop_complete(struct isci_host *ihost, enum sci_status completion_status) +static void isci_host_stop_complete(struct isci_host *ihost) { sci_controller_disable_interrupts(ihost); clear_bit(IHOST_STOP_PENDING, &ihost->flags); @@ -1232,7 +1232,7 @@ static enum sci_status sci_controller_reset(struct isci_host *ihost) switch (ihost->sm.current_state_id) { case SCIC_RESET: case SCIC_READY: - case SCIC_STOPPED: + case SCIC_STOPPING: case SCIC_FAILED: /* * The reset operation is not a graceful cleanup, just @@ -1247,6 +1247,44 @@ static enum sci_status sci_controller_reset(struct isci_host *ihost) } } +static enum sci_status sci_controller_stop_phys(struct isci_host *ihost) +{ + u32 index; + enum sci_status status; + enum sci_status phy_status; + + status = SCI_SUCCESS; + + for (index = 0; index < SCI_MAX_PHYS; index++) { + phy_status = sci_phy_stop(&ihost->phys[index]); + + if (phy_status != SCI_SUCCESS && + phy_status != SCI_FAILURE_INVALID_STATE) { + status = SCI_FAILURE; + + dev_warn(&ihost->pdev->dev, + "%s: Controller stop operation failed to stop " + "phy %d because of status %d.\n", + __func__, + ihost->phys[index].phy_index, phy_status); + } + } + + return status; +} + + +/** + * isci_host_deinit - shutdown frame reception and dma + * @ihost: host to take down + * + * This is called in either the driver shutdown or the suspend path. In + * the shutdown case libsas went through port teardown and normal device + * removal (i.e. physical links stayed up to service scsi_device removal + * commands). In the suspend case we disable the hardware without + * notifying libsas of the link down events since we want libsas to + * remember the domain across the suspend/resume cycle + */ void isci_host_deinit(struct isci_host *ihost) { int i; @@ -1255,16 +1293,6 @@ void isci_host_deinit(struct isci_host *ihost) for (i = 0; i < isci_gpio_count(ihost); i++) writel(SGPIO_HW_CONTROL, &ihost->scu_registers->peg0.sgpio.output_data_select[i]); - for (i = 0; i < SCI_MAX_PORTS; i++) { - struct isci_port *iport = &ihost->ports[i]; - struct isci_remote_device *idev, *d; - - list_for_each_entry_safe(idev, d, &iport->remote_dev_list, node) { - if (test_bit(IDEV_ALLOCATED, &idev->flags)) - isci_remote_device_stop(ihost, idev); - } - } - set_bit(IHOST_STOP_PENDING, &ihost->flags); spin_lock_irq(&ihost->scic_lock); @@ -1273,6 +1301,13 @@ void isci_host_deinit(struct isci_host *ihost) wait_for_stop(ihost); + /* phy stop is after controller stop to allow port and device to + * go idle before shutting down the phys, but the expectation is + * that i/o has been shut off well before we reach this + * function. + */ + sci_controller_stop_phys(ihost); + /* disable sgpio: where the above wait should give time for the * enclosure to sample the gpios going inactive */ @@ -1476,32 +1511,6 @@ static void sci_controller_ready_state_exit(struct sci_base_state_machine *sm) sci_controller_set_interrupt_coalescence(ihost, 0, 0); } -static enum sci_status sci_controller_stop_phys(struct isci_host *ihost) -{ - u32 index; - enum sci_status status; - enum sci_status phy_status; - - status = SCI_SUCCESS; - - for (index = 0; index < SCI_MAX_PHYS; index++) { - phy_status = sci_phy_stop(&ihost->phys[index]); - - if (phy_status != SCI_SUCCESS && - phy_status != SCI_FAILURE_INVALID_STATE) { - status = SCI_FAILURE; - - dev_warn(&ihost->pdev->dev, - "%s: Controller stop operation failed to stop " - "phy %d because of status %d.\n", - __func__, - ihost->phys[index].phy_index, phy_status); - } - } - - return status; -} - static enum sci_status sci_controller_stop_ports(struct isci_host *ihost) { u32 index; @@ -1561,10 +1570,11 @@ static void sci_controller_stopping_state_enter(struct sci_base_state_machine *s { struct isci_host *ihost = container_of(sm, typeof(*ihost), sm); - /* Stop all of the components for this controller */ - sci_controller_stop_phys(ihost); - sci_controller_stop_ports(ihost); sci_controller_stop_devices(ihost); + sci_controller_stop_ports(ihost); + + if (!sci_controller_has_remote_devices_stopping(ihost)) + isci_host_stop_complete(ihost); } static void sci_controller_stopping_state_exit(struct sci_base_state_machine *sm) @@ -1621,7 +1631,6 @@ static const struct sci_base_state sci_controller_state_table[] = { .enter_state = sci_controller_stopping_state_enter, .exit_state = sci_controller_stopping_state_exit, }, - [SCIC_STOPPED] = {}, [SCIC_FAILED] = {} }; @@ -1641,7 +1650,7 @@ static void controller_timeout(unsigned long data) sci_controller_transition_to_ready(ihost, SCI_FAILURE_TIMEOUT); else if (sm->current_state_id == SCIC_STOPPING) { sci_change_state(sm, SCIC_FAILED); - isci_host_stop_complete(ihost, SCI_FAILURE_TIMEOUT); + isci_host_stop_complete(ihost); } else /* / @todo Now what do we want to do in this case? */ dev_err(&ihost->pdev->dev, "%s: Controller timer fired when controller was not " @@ -2452,7 +2461,7 @@ void sci_controller_link_down(struct isci_host *ihost, struct isci_port *iport, } } -static bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost) +bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost) { u32 index; @@ -2478,7 +2487,7 @@ void sci_controller_remote_device_stopped(struct isci_host *ihost, } if (!sci_controller_has_remote_devices_stopping(ihost)) - sci_change_state(&ihost->sm, SCIC_STOPPED); + isci_host_stop_complete(ihost); } void sci_controller_post_request(struct isci_host *ihost, u32 request) diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 4695162..a89c0e3 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -277,13 +277,6 @@ enum sci_controller_states { SCIC_STOPPING, /** - * This state indicates that the controller has successfully been stopped. - * In this state no new IO operations are permitted. - * This state is entered from the STOPPING state. - */ - SCIC_STOPPED, - - /** * This state indicates that the controller could not successfully be * initialized. In this state no new IO operations are permitted. * This state is entered from the INITIALIZING state. @@ -479,6 +472,7 @@ int isci_host_init(struct isci_host *); void isci_host_completion_routine(unsigned long data); void isci_host_deinit(struct isci_host *); void sci_controller_disable_interrupts(struct isci_host *ihost); +bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost); enum sci_status sci_controller_start_io( struct isci_host *ihost, -- cgit v1.1 From 50a92d93148ec073efd2456b007e04ecae452086 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 29 Feb 2012 01:07:56 -0800 Subject: isci: fix 'link-up' events occur after 'start-complete' The call to wait_for_start() is meant to ensure that all links have been given a chance to come up before letting the kernel proceed with probing. However, the implementation is not correctly syncing with the port configuration agent. In the MPC case the ports are hard-coded, in the APC case we need to wait for the port-configuration to form ports from the started phys. Towards that end increase the timeout for the APC agent to form ports, and delay start complete until all phys are out of link-training. Cc: Cc: Richard Boyd Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 67 ++++++++++++++++++++++------------------- drivers/scsi/isci/host.h | 3 ++ drivers/scsi/isci/port_config.c | 18 ++++++----- 3 files changed, 50 insertions(+), 38 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 95c3da6..577a836 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -816,7 +816,7 @@ static void sci_controller_initialize_unsolicited_frame_queue(struct isci_host * &ihost->scu_registers->sdma.unsolicited_frame_put_pointer); } -static void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status) +void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status) { if (ihost->sm.current_state_id == SCIC_STARTING) { /* @@ -843,6 +843,7 @@ static bool is_phy_starting(struct isci_phy *iphy) case SCI_PHY_SUB_AWAIT_SATA_POWER: case SCI_PHY_SUB_AWAIT_SATA_PHY_EN: case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN: + case SCI_PHY_SUB_AWAIT_OSSP_EN: case SCI_PHY_SUB_AWAIT_SIG_FIS_UF: case SCI_PHY_SUB_FINAL: return true; @@ -851,6 +852,39 @@ static bool is_phy_starting(struct isci_phy *iphy) } } +bool is_controller_start_complete(struct isci_host *ihost) +{ + int i; + + for (i = 0; i < SCI_MAX_PHYS; i++) { + struct isci_phy *iphy = &ihost->phys[i]; + u32 state = iphy->sm.current_state_id; + + /* in apc mode we need to check every phy, in + * mpc mode we only need to check phys that have + * been configured into a port + */ + if (is_port_config_apc(ihost)) + /* pass */; + else if (!phy_get_non_dummy_port(iphy)) + continue; + + /* The controller start operation is complete iff: + * - all links have been given an opportunity to start + * - have no indication of a connected device + * - have an indication of a connected device and it has + * finished the link training process. + */ + if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) || + (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) || + (iphy->is_in_link_training == true && is_phy_starting(iphy)) || + (ihost->port_agent.phy_ready_mask != ihost->port_agent.phy_configured_mask)) + return false; + } + + return true; +} + /** * sci_controller_start_next_phy - start phy * @scic: controller @@ -871,36 +905,7 @@ static enum sci_status sci_controller_start_next_phy(struct isci_host *ihost) return status; if (ihost->next_phy_to_start >= SCI_MAX_PHYS) { - bool is_controller_start_complete = true; - u32 state; - u8 index; - - for (index = 0; index < SCI_MAX_PHYS; index++) { - iphy = &ihost->phys[index]; - state = iphy->sm.current_state_id; - - if (!phy_get_non_dummy_port(iphy)) - continue; - - /* The controller start operation is complete iff: - * - all links have been given an opportunity to start - * - have no indication of a connected device - * - have an indication of a connected device and it has - * finished the link training process. - */ - if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) || - (iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) || - (iphy->is_in_link_training == true && is_phy_starting(iphy)) || - (ihost->port_agent.phy_ready_mask != ihost->port_agent.phy_configured_mask)) { - is_controller_start_complete = false; - break; - } - } - - /* - * The controller has successfully finished the start process. - * Inform the SCI Core user and transition to the READY state. */ - if (is_controller_start_complete == true) { + if (is_controller_start_complete(ihost)) { sci_controller_transition_to_ready(ihost, SCI_SUCCESS); sci_del_timer(&ihost->phy_timer); ihost->phy_startup_timer_pending = false; diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index a89c0e3..9dc910b 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -109,6 +109,8 @@ struct sci_port_configuration_agent; typedef void (*port_config_fn)(struct isci_host *, struct sci_port_configuration_agent *, struct isci_port *, struct isci_phy *); +bool is_port_config_apc(struct isci_host *ihost); +bool is_controller_start_complete(struct isci_host *ihost); struct sci_port_configuration_agent { u16 phy_configured_mask; @@ -473,6 +475,7 @@ void isci_host_completion_routine(unsigned long data); void isci_host_deinit(struct isci_host *); void sci_controller_disable_interrupts(struct isci_host *ihost); bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost); +void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status); enum sci_status sci_controller_start_io( struct isci_host *ihost, diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c index 6d1e954..cd962da 100644 --- a/drivers/scsi/isci/port_config.c +++ b/drivers/scsi/isci/port_config.c @@ -57,7 +57,7 @@ #define SCIC_SDS_MPC_RECONFIGURATION_TIMEOUT (10) #define SCIC_SDS_APC_RECONFIGURATION_TIMEOUT (10) -#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (250) +#define SCIC_SDS_APC_WAIT_LINK_UP_NOTIFICATION (1000) enum SCIC_SDS_APC_ACTIVITY { SCIC_SDS_APC_SKIP_PHY, @@ -472,13 +472,9 @@ sci_apc_agent_validate_phy_configuration(struct isci_host *ihost, * down event or a link up event where we can not yet tell to which a phy * belongs. */ -static void sci_apc_agent_start_timer( - struct sci_port_configuration_agent *port_agent, - u32 timeout) +static void sci_apc_agent_start_timer(struct sci_port_configuration_agent *port_agent, + u32 timeout) { - if (port_agent->timer_pending) - sci_del_timer(&port_agent->timer); - port_agent->timer_pending = true; sci_mod_timer(&port_agent->timer, timeout); } @@ -697,6 +693,9 @@ static void apc_agent_timeout(unsigned long data) &ihost->phys[index], false); } + if (is_controller_start_complete(ihost)) + sci_controller_transition_to_ready(ihost, SCI_SUCCESS); + done: spin_unlock_irqrestore(&ihost->scic_lock, flags); } @@ -732,6 +731,11 @@ void sci_port_configuration_agent_construct( } } +bool is_port_config_apc(struct isci_host *ihost) +{ + return ihost->port_agent.link_up_handler == sci_apc_agent_link_up; +} + enum sci_status sci_port_configuration_agent_initialize( struct isci_host *ihost, struct sci_port_configuration_agent *port_agent) -- cgit v1.1 From 2396a2650a5a39634e3ad6b29e1104944e5ab88f Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 1 Mar 2012 17:06:24 -0800 Subject: isci: fix interrupt disable There is a (dubious?) lost irq workaround in sci_controller_isr() that effectively nullifies attempts to disable interrupts. Until the workaround can be re-evaluated add some infrastructure to prevent the interrupt handler from inadvertantly re-enabling interrupts. The failure mode was interrupts continuing to run after the driver had been removed and its iomappings torn down. Reported-by: Jacek Danecki Tested-by: Jacek Danecki [richard: clear remaining interrupts at the end of reset] Acked-by: Richard Boyd Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 39 ++++++++++++++++++++++++++------------- drivers/scsi/isci/host.h | 1 + 2 files changed, 27 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 577a836..5832b13 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -192,22 +192,27 @@ static bool sci_controller_completion_queue_has_entries(struct isci_host *ihost) static bool sci_controller_isr(struct isci_host *ihost) { - if (sci_controller_completion_queue_has_entries(ihost)) { + if (sci_controller_completion_queue_has_entries(ihost)) return true; - } else { - /* - * we have a spurious interrupt it could be that we have already - * emptied the completion queue from a previous interrupt */ - writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status); - /* - * There is a race in the hardware that could cause us not to be notified - * of an interrupt completion if we do not take this step. We will mask - * then unmask the interrupts so if there is another interrupt pending - * the clearing of the interrupt source we get the next interrupt message. */ + /* we have a spurious interrupt it could be that we have already + * emptied the completion queue from a previous interrupt + * FIXME: really!? + */ + writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status); + + /* There is a race in the hardware that could cause us not to be + * notified of an interrupt completion if we do not take this + * step. We will mask then unmask the interrupts so if there is + * another interrupt pending the clearing of the interrupt + * source we get the next interrupt message. + */ + spin_lock(&ihost->scic_lock); + if (test_bit(IHOST_IRQ_ENABLED, &ihost->flags)) { writel(0xFF000000, &ihost->smu_registers->interrupt_mask); writel(0, &ihost->smu_registers->interrupt_mask); } + spin_unlock(&ihost->scic_lock); return false; } @@ -698,14 +703,15 @@ static u32 sci_controller_get_suggested_start_timeout(struct isci_host *ihost) static void sci_controller_enable_interrupts(struct isci_host *ihost) { - BUG_ON(ihost->smu_registers == NULL); + set_bit(IHOST_IRQ_ENABLED, &ihost->flags); writel(0, &ihost->smu_registers->interrupt_mask); } void sci_controller_disable_interrupts(struct isci_host *ihost) { - BUG_ON(ihost->smu_registers == NULL); + clear_bit(IHOST_IRQ_ENABLED, &ihost->flags); writel(0xffffffff, &ihost->smu_registers->interrupt_mask); + readl(&ihost->smu_registers->interrupt_mask); /* flush */ } static void sci_controller_enable_port_task_scheduler(struct isci_host *ihost) @@ -1318,7 +1324,9 @@ void isci_host_deinit(struct isci_host *ihost) */ writel(0, &ihost->scu_registers->peg0.sgpio.interface_control); + spin_lock_irq(&ihost->scic_lock); sci_controller_reset(ihost); + spin_unlock_irq(&ihost->scic_lock); /* Cancel any/all outstanding port timers */ for (i = 0; i < ihost->logical_port_entries; i++) { @@ -1605,6 +1613,9 @@ static void sci_controller_reset_hardware(struct isci_host *ihost) /* The write to the UFQGP clears the UFQPR */ writel(0, &ihost->scu_registers->sdma.unsolicited_frame_get_pointer); + + /* clear all interrupts */ + writel(~SMU_INTERRUPT_STATUS_RESERVED_MASK, &ihost->smu_registers->interrupt_status); } static void sci_controller_resetting_state_enter(struct sci_base_state_machine *sm) @@ -2391,7 +2402,9 @@ int isci_host_init(struct isci_host *ihost) int i, err; enum sci_status status; + spin_lock_irq(&ihost->scic_lock); status = sci_controller_construct(ihost, scu_base(ihost), smu_base(ihost)); + spin_unlock_irq(&ihost->scic_lock); if (status != SCI_SUCCESS) { dev_err(&ihost->pdev->dev, "%s: sci_controller_construct failed - status = %x\n", diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 9dc910b..9701c1d 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -200,6 +200,7 @@ struct isci_host { struct pci_dev *pdev; #define IHOST_START_PENDING 0 #define IHOST_STOP_PENDING 1 + #define IHOST_IRQ_ENABLED 2 unsigned long flags; wait_queue_head_t eventq; struct Scsi_Host *shost; -- cgit v1.1 From d1dc5e2d21a55538167d7ce82aa147c91c5e6788 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Sat, 25 Feb 2012 14:29:49 -0800 Subject: isci: kill isci_host.shost We can retrieve the shost from the sas_ha like the rest of libsas and drop this out of our local data structure. Acked-by: Jacek Danecki Signed-off-by: Dan Williams --- drivers/scsi/isci/host.h | 6 +++++- drivers/scsi/isci/init.c | 16 +++++++--------- 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 9701c1d..7272a0a 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -203,7 +203,6 @@ struct isci_host { #define IHOST_IRQ_ENABLED 2 unsigned long flags; wait_queue_head_t eventq; - struct Scsi_Host *shost; struct tasklet_struct completion_tasklet; struct list_head requests_to_complete; struct list_head requests_to_errorback; @@ -308,6 +307,11 @@ static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev) return pci_get_drvdata(pdev); } +static inline struct Scsi_Host *to_shost(struct isci_host *ihost) +{ + return ihost->sas_ha.core.shost; +} + #define for_each_isci_host(id, ihost, pdev) \ for (id = 0, ihost = to_pci_info(pdev)->hosts[id]; \ id < ARRAY_SIZE(to_pci_info(pdev)->hosts) && ihost; \ diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index eda4385..fdae42f 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -271,13 +271,12 @@ static void isci_unregister(struct isci_host *isci_host) if (!isci_host) return; - shost = isci_host->shost; - sas_unregister_ha(&isci_host->sas_ha); - sas_remove_host(isci_host->shost); - scsi_remove_host(isci_host->shost); - scsi_host_put(isci_host->shost); + shost = to_shost(isci_host); + sas_remove_host(shost); + scsi_remove_host(shost); + scsi_host_put(shost); } static int __devinit isci_pci_init(struct pci_dev *pdev) @@ -578,7 +577,6 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) shost = scsi_host_alloc(&isci_sht, sizeof(void *)); if (!shost) return NULL; - ihost->shost = shost; dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " "{%s, %s, %s, %s}\n", @@ -690,11 +688,11 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic pci_info->hosts[i] = h; /* turn on DIF support */ - scsi_host_set_prot(h->shost, + scsi_host_set_prot(to_shost(h), SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION); - scsi_host_set_guard(h->shost, SHOST_DIX_GUARD_CRC); + scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC); } err = isci_setup_interrupts(pdev); @@ -702,7 +700,7 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic goto err_host_alloc; for_each_isci_host(i, isci_host, pdev) - scsi_scan_host(isci_host->shost); + scsi_scan_host(to_shost(isci_host)); return 0; -- cgit v1.1 From 6119908f0fe3737bba2f64eff70599c3e41d522e Mon Sep 17 00:00:00 2001 From: Andrzej Jakowski Date: Thu, 8 Mar 2012 19:38:50 +0000 Subject: isci: Changes in COMSAS timings enabling ISCI to detect buggy disc drives. This patch extends timings in COMSAS signaling, so ISCI can detect disc drives having issues to send COMSAS in correct time frame. Signed-off-by: Andrzej Jakowski Signed-off-by: Dan Williams --- drivers/scsi/isci/phy.c | 55 +++++++++++++++++++++++++++++++++++++++++++ drivers/scsi/isci/registers.h | 8 +++++++ 2 files changed, 63 insertions(+) diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 474330f..85b26ac 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -668,6 +668,19 @@ static const char *phy_event_name(u32 event_code) phy_to_host(iphy)->id, iphy->phy_index, \ phy_state_name(state), phy_event_name(code), code) + +void scu_link_layer_set_txcomsas_timeout(struct isci_phy *iphy, u32 timeout) +{ + u32 val; + + /* Extend timeout */ + val = readl(&iphy->link_layer_registers->transmit_comsas_signal); + val &= ~SCU_SAS_LLTXCOMSAS_GEN_VAL(NEGTIME, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_MASK); + val |= SCU_SAS_LLTXCOMSAS_GEN_VAL(NEGTIME, timeout); + + writel(val, &iphy->link_layer_registers->transmit_comsas_signal); +} + enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) { enum sci_phy_states state = iphy->sm.current_state_id; @@ -683,6 +696,13 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) sci_phy_start_sata_link_training(iphy); iphy->is_in_link_training = true; break; + case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT: + /* Extend timeout value */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_EXTENDED); + + /* Start the oob/sn state machine over again */ + sci_change_state(&iphy->sm, SCI_PHY_STARTING); + break; default: phy_event_dbg(iphy, state, event_code); return SCI_FAILURE; @@ -717,9 +737,19 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) sci_phy_start_sata_link_training(iphy); break; case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; + case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT: + /* Extend the timeout value */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_EXTENDED); + + /* Start the oob/sn state machine over again */ + sci_change_state(&iphy->sm, SCI_PHY_STARTING); + break; default: phy_event_warn(iphy, state, event_code); return SCI_FAILURE; @@ -740,7 +770,14 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) sci_phy_start_sata_link_training(iphy); break; case SCU_EVENT_RECEIVED_IDENTIFY_TIMEOUT: + /* Extend the timeout value */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_EXTENDED); + + /* Start the oob/sn state machine over again */ + sci_change_state(&iphy->sm, SCI_PHY_STARTING); + break; case SCU_EVENT_LINK_FAILURE: + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); case SCU_EVENT_HARD_RESET_RECEIVED: /* Start the oob/sn state machine over again */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); @@ -753,6 +790,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) case SCI_PHY_SUB_AWAIT_SAS_POWER: switch (scu_get_event_code(event_code)) { case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; @@ -764,6 +804,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) case SCI_PHY_SUB_AWAIT_SATA_POWER: switch (scu_get_event_code(event_code)) { case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; @@ -788,6 +831,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) case SCI_PHY_SUB_AWAIT_SATA_PHY_EN: switch (scu_get_event_code(event_code)) { case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; @@ -836,6 +882,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) SCI_PHY_SUB_AWAIT_SIG_FIS_UF); break; case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; @@ -859,6 +908,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) break; case SCU_EVENT_LINK_FAILURE: + /* Change the timeout value to default */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; @@ -871,6 +923,9 @@ enum sci_status sci_phy_event_handler(struct isci_phy *iphy, u32 event_code) case SCI_PHY_READY: switch (scu_get_event_code(event_code)) { case SCU_EVENT_LINK_FAILURE: + /* Set default timeout */ + scu_link_layer_set_txcomsas_timeout(iphy, SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT); + /* Link failure change state back to the starting state */ sci_change_state(&iphy->sm, SCI_PHY_STARTING); break; diff --git a/drivers/scsi/isci/registers.h b/drivers/scsi/isci/registers.h index 7eb0ccd..97f3ceb 100644 --- a/drivers/scsi/isci/registers.h +++ b/drivers/scsi/isci/registers.h @@ -1239,6 +1239,14 @@ struct scu_transport_layer_registers { #define SCU_SAS_LLCTL_GEN_BIT(name) \ SCU_GEN_BIT(SCU_SAS_LINK_LAYER_CONTROL_ ## name) +#define SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_DEFAULT (0xF0) +#define SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_EXTENDED (0x1FF) +#define SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_SHIFT (0) +#define SCU_SAS_LINK_LAYER_TXCOMSAS_NEGTIME_MASK (0x3FF) + +#define SCU_SAS_LLTXCOMSAS_GEN_VAL(name, value) \ + SCU_GEN_VALUE(SCU_SAS_LINK_LAYER_TXCOMSAS_ ## name, value) + /* #define SCU_FRXHECR_DCNT_OFFSET 0x00B0 */ #define SCU_PSZGCR_OFFSET 0x00E4 -- cgit v1.1 From 08e73be56b6b2e5459638481a54b755ed562ada8 Mon Sep 17 00:00:00 2001 From: Maciej Trela Date: Mon, 12 Mar 2012 23:29:30 +0000 Subject: isci: enable BCN in sci_port_add_phy() Ensure we enable receiving BCN's from the hardware when adding phy to isci_port. Otherwise if we get BCN before the port is created we won't see any BCN Signed-off-by: Maciej Trela Reported-by: Richard Boyd Signed-off-by: Dan Williams --- drivers/scsi/isci/port.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 6ef4bd9..0a3aec1 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -1199,6 +1199,8 @@ enum sci_status sci_port_add_phy(struct isci_port *iport, enum sci_status status; enum sci_port_states state; + sci_port_bcn_enable(iport); + state = iport->sm.current_state_id; switch (state) { case SCI_PORT_STOPPED: { -- cgit v1.1 From fc25f79af321c01a739150ba2c09435cf977a63d Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Mon, 30 Apr 2012 11:57:44 -0700 Subject: isci: fix oem parameter validation on single controller skus OEM parameters [1] are parsed from the platform option-rom / efi driver. By default the driver was validating the parameters for the dual-controller case, but in single-controller case only the first set of parameters may be valid. Limit the validation to the number of actual controllers detected otherwise the driver may fail to parse the valid parameters leading to driver-load or runtime failures. [1] the platform specific set of phy address, configuration,and analog tuning values [stable v3.0+] Cc: Reported-by: Dave Jiang Tested-by: Dave Jiang Signed-off-by: Dan Williams --- drivers/scsi/isci/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index fdae42f..9e1c83e 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -639,7 +639,7 @@ static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_devic if (!orom) orom = isci_request_oprom(pdev); - for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) { + for (i = 0; orom && i < num_controllers(pdev); i++) { if (sci_oem_parameters_validate(&orom->ctrl[i], orom->hdr.version)) { dev_warn(&pdev->dev, -- cgit v1.1 From 6f48844e3f16b7d8a1f9a1a11bd9a11089a5292f Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:48 -0800 Subject: isci: Manage the link layer hang detect timer for RNC suspensions. For STP devices under certain protocol conditions, an RNC will not suspend until the current transfer state is broken with a SYNC/ESC sequence from the SCU. The SYNC/ESC driven by expiration of the SCU link layer hang detect timer, which has too small a dynamic range to support slow SATA devices, so normally it is disabled. This change enables the timer with the minimum period at the point when the suspension is requested. Note that there is potential collateral damage to other open connections to slow SATA devices on the same port, since there is no alternative but to enable the LLHANG timer on every phy in the port for the current suspension request - there is no way to tell on which phy the RNC in question is currently active. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/port.c | 26 +++++++++++++++++++++++++- drivers/scsi/isci/port.h | 5 +++++ drivers/scsi/isci/remote_device.h | 7 +++++++ drivers/scsi/isci/remote_node_context.c | 15 ++++++++++++++- 4 files changed, 51 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index 0a3aec1..ed206c5 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -1548,6 +1548,29 @@ static void sci_port_failed_state_enter(struct sci_base_state_machine *sm) isci_port_hard_reset_complete(iport, SCI_FAILURE_TIMEOUT); } +void sci_port_set_hang_detection_timeout(struct isci_port *iport, u32 timeout) +{ + int phy_index; + u32 phy_mask = iport->active_phy_mask; + + if (timeout) + ++iport->hang_detect_users; + else if (iport->hang_detect_users > 1) + --iport->hang_detect_users; + else + iport->hang_detect_users = 0; + + if (timeout || (iport->hang_detect_users == 0)) { + for (phy_index = 0; phy_index < SCI_MAX_PHYS; phy_index++) { + if ((phy_mask >> phy_index) & 1) { + writel(timeout, + &iport->phy_table[phy_index] + ->link_layer_registers + ->link_layer_hang_detection_timeout); + } + } + } +} /* --------------------------------------------------------------------------- */ static const struct sci_base_state sci_port_state_table[] = { @@ -1596,6 +1619,7 @@ void sci_port_construct(struct isci_port *iport, u8 index, iport->started_request_count = 0; iport->assigned_device_count = 0; + iport->hang_detect_users = 0; iport->reserved_rni = SCU_DUMMY_INDEX; iport->reserved_tag = SCI_CONTROLLER_INVALID_IO_TAG; @@ -1733,7 +1757,7 @@ void isci_port_formed(struct asd_sas_phy *phy) struct isci_host *ihost = phy->ha->lldd_ha; struct isci_phy *iphy = to_iphy(phy); struct asd_sas_port *port = phy->port; - struct isci_port *iport; + struct isci_port *iport = NULL; unsigned long flags; int i; diff --git a/drivers/scsi/isci/port.h b/drivers/scsi/isci/port.h index f8bd1e8..861e8f7 100644 --- a/drivers/scsi/isci/port.h +++ b/drivers/scsi/isci/port.h @@ -111,6 +111,7 @@ struct isci_port { u16 reserved_tag; u32 started_request_count; u32 assigned_device_count; + u32 hang_detect_users; u32 not_ready_reason; struct isci_phy *phy_table[SCI_MAX_PHYS]; struct isci_host *owning_controller; @@ -269,6 +270,10 @@ void sci_port_get_attached_sas_address( struct isci_port *iport, struct sci_sas_address *sas_address); +void sci_port_set_hang_detection_timeout( + struct isci_port *isci_port, + u32 timeout); + void isci_port_formed(struct asd_sas_phy *); void isci_port_deformed(struct asd_sas_phy *); diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 4a67ff0..4850b58 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -301,6 +301,13 @@ static inline void sci_remote_device_decrement_request_count(struct isci_remote_ idev->started_request_count--; } +static inline void isci_dev_set_hang_detection_timeout( + struct isci_remote_device *idev, + u32 timeout) +{ + sci_port_set_hang_detection_timeout(idev->owning_port, timeout); +} + enum sci_status sci_remote_device_frame_handler( struct isci_remote_device *idev, u32 frame_index); diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 8ce5a35..3a55ba6 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -316,6 +316,15 @@ static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_ sci_remote_node_context_continue_state_transitions(rnc); } +static void sci_remote_node_context_await_suspend_state_exit( + struct sci_base_state_machine *sm) +{ + struct sci_remote_node_context *rnc + = container_of(sm, typeof(*rnc), sm); + + isci_dev_set_hang_detection_timeout(rnc_to_dev(rnc), 0); +} + static const struct sci_base_state sci_remote_node_context_state_table[] = { [SCI_RNC_INITIAL] = { .enter_state = sci_remote_node_context_initial_state_enter, @@ -338,7 +347,9 @@ static const struct sci_base_state sci_remote_node_context_state_table[] = { [SCI_RNC_TX_RX_SUSPENDED] = { .enter_state = sci_remote_node_context_tx_rx_suspended_state_enter, }, - [SCI_RNC_AWAIT_SUSPENSION] = { }, + [SCI_RNC_AWAIT_SUSPENSION] = { + .exit_state = sci_remote_node_context_await_suspend_state_exit, + }, }; void sci_remote_node_context_construct(struct sci_remote_node_context *rnc, @@ -513,6 +524,8 @@ enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context * if (suspend_type == SCI_SOFTWARE_SUSPENSION) { sci_remote_device_post_request(rnc_to_dev(sci_rnc), SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX); + isci_dev_set_hang_detection_timeout(rnc_to_dev(sci_rnc), + 0x00000001); } sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION); -- cgit v1.1 From 56d7c013e714c6feab2ab5ac854808e29048b069 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:49 -0800 Subject: isci: Fixed bug in resumption from RNC Tx/Rx suspend state. The resumption from the Tx/Rx suspended state should work the same as the Tx suspended state. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_node_context.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 3a55ba6..3e84975 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -557,10 +557,16 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s sci_rnc->user_callback = cb_fn; sci_rnc->user_cookie = cb_p; return SCI_SUCCESS; - case SCI_RNC_TX_SUSPENDED: { + case SCI_RNC_TX_SUSPENDED: + case SCI_RNC_TX_RX_SUSPENDED: { struct isci_remote_device *idev = rnc_to_dev(sci_rnc); struct domain_device *dev = idev->domain_dev; + /* If this is an expander attached SATA device we must + * invalidate and repost the RNC since this is the only way + * to clear the TCi to NCQ tag mapping table for the RNi. + * All other device types we can just resume. + */ sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); if (dev_is_sata(dev) && dev->parent) @@ -569,10 +575,6 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); return SCI_SUCCESS; } - case SCI_RNC_TX_RX_SUSPENDED: - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); - sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); - return SCI_FAILURE_INVALID_STATE; case SCI_RNC_AWAIT_SUSPENSION: sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); return SCI_SUCCESS; -- cgit v1.1 From ac78ed0f78eae5c3c918e132b5e2029cdc4fdedc Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:50 -0800 Subject: isci: Handle all suspending TC completions Add comprehensive decode for all TC completions that generate RNC suspensions. Note that this commit also removes unconditional resumptions of ATAPI devices when in the SCI_STP_DEV_ATAPI_ERROR state, and STP devices when in the SCI_STP_DEV_IDLE state. This is because the SCI_STP_DEV_IDLE and SCI_STP_DEV_ATAPI state entry functions manage the RNC resumption. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 86 +++++++++--------- drivers/scsi/isci/remote_device.h | 4 - drivers/scsi/isci/remote_node_context.c | 74 ++++++++++----- drivers/scsi/isci/remote_node_context.h | 13 ++- drivers/scsi/isci/request.c | 149 ++++++++++++++++++++++++++++--- drivers/scsi/isci/request.h | 1 - drivers/scsi/isci/scu_completion_codes.h | 2 + 7 files changed, 242 insertions(+), 87 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 71f5090..b1a8000 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -265,20 +265,12 @@ enum sci_status sci_remote_device_reset_complete(struct isci_remote_device *idev return SCI_SUCCESS; } -enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, - u32 suspend_type) +enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev) { - struct sci_base_state_machine *sm = &idev->sm; - enum sci_remote_device_states state = sm->current_state_id; - - if (state != SCI_STP_DEV_CMD) { - dev_warn(scirdev_to_dev(idev), "%s: in wrong state: %s\n", - __func__, dev_state_name(state)); - return SCI_FAILURE_INVALID_STATE; - } - return sci_remote_node_context_suspend(&idev->rnc, - suspend_type, NULL, NULL); + SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, + NULL, NULL); } enum sci_status sci_remote_device_frame_handler(struct isci_remote_device *idev, @@ -412,8 +404,6 @@ static void atapi_remote_device_resume_done(void *_dev) enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, u32 event_code) { - struct sci_base_state_machine *sm = &idev->sm; - enum sci_remote_device_states state = sm->current_state_id; enum sci_status status; switch (scu_get_event_type(event_code)) { @@ -427,9 +417,11 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, status = SCI_SUCCESS; /* Suspend the associated RNC */ - sci_remote_node_context_suspend(&idev->rnc, - SCI_SOFTWARE_SUSPENSION, - NULL, NULL); + sci_remote_node_context_suspend( + &idev->rnc, + SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, + NULL, NULL); dev_dbg(scirdev_to_dev(idev), "%s: device: %p event code: %x: %s\n", @@ -455,26 +447,6 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, if (status != SCI_SUCCESS) return status; - if (state == SCI_STP_DEV_ATAPI_ERROR) { - /* For ATAPI error state resume the RNC right away. */ - if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX || - scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) { - return sci_remote_node_context_resume(&idev->rnc, - atapi_remote_device_resume_done, - idev); - } - } - - if (state == SCI_STP_DEV_IDLE) { - - /* We pick up suspension events to handle specifically to this - * state. We resume the RNC right away. - */ - if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX || - scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) - status = sci_remote_node_context_resume(&idev->rnc, NULL, NULL); - } - return status; } @@ -765,11 +737,11 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, * the correct action when the remote node context is suspended * and later resumed. */ - sci_remote_node_context_suspend(&idev->rnc, - SCI_SOFTWARE_SUSPENSION, NULL, NULL); - sci_remote_node_context_resume(&idev->rnc, - sci_remote_device_continue_request, - idev); + sci_remote_node_context_suspend( + &idev->rnc, SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); + sci_remote_node_context_resume( + &idev->rnc, sci_remote_device_continue_request, idev); out: sci_remote_device_start_request(idev, ireq, status); @@ -954,14 +926,23 @@ static void sci_remote_device_ready_state_exit(struct sci_base_state_machine *sm static void sci_remote_device_resetting_state_enter(struct sci_base_state_machine *sm) { struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); + struct isci_host *ihost = idev->owning_port->owning_controller; + + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p\n", __func__, idev); sci_remote_node_context_suspend( - &idev->rnc, SCI_SOFTWARE_SUSPENSION, NULL, NULL); + &idev->rnc, SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); } static void sci_remote_device_resetting_state_exit(struct sci_base_state_machine *sm) { struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); + struct isci_host *ihost = idev->owning_port->owning_controller; + + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p\n", __func__, idev); sci_remote_node_context_resume(&idev->rnc, NULL, NULL); } @@ -1004,6 +985,21 @@ static void sci_stp_remote_device_ready_ncq_error_substate_enter(struct sci_base idev->not_ready_reason); } +static void sci_stp_remote_device_atapi_error_substate_enter( + struct sci_base_state_machine *sm) +{ + struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); + + /* This state is entered when an I/O is decoded with an error + * condition. By this point the RNC expected suspension state is set. + * The error conditions suspend the device, so unsuspend here if + * possible. + */ + sci_remote_node_context_resume(&idev->rnc, + atapi_remote_device_resume_done, + idev); +} + static void sci_smp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm) { struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); @@ -1054,7 +1050,9 @@ static const struct sci_base_state sci_remote_device_state_table[] = { [SCI_STP_DEV_NCQ_ERROR] = { .enter_state = sci_stp_remote_device_ready_ncq_error_substate_enter, }, - [SCI_STP_DEV_ATAPI_ERROR] = { }, + [SCI_STP_DEV_ATAPI_ERROR] = { + .enter_state = sci_stp_remote_device_atapi_error_substate_enter, + }, [SCI_STP_DEV_AWAIT_RESET] = { }, [SCI_SMP_DEV_IDLE] = { .enter_state = sci_smp_remote_device_ready_idle_substate_enter, diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 4850b58..3915905 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -331,10 +331,6 @@ enum sci_status sci_remote_device_complete_io( struct isci_remote_device *idev, struct isci_request *ireq); -enum sci_status sci_remote_device_suspend( - struct isci_remote_device *idev, - u32 suspend_type); - void sci_remote_device_post_request( struct isci_remote_device *idev, u32 request); diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 3e84975..f180c72 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -367,6 +367,7 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con u32 event_code) { enum scis_sds_remote_node_context_states state; + u32 next_state; state = sci_rnc->sm.current_state_id; switch (state) { @@ -425,11 +426,11 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con switch (scu_get_event_type(event_code)) { case SCU_EVENT_TL_RNC_SUSPEND_TX: sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED); - sci_rnc->suspension_code = scu_get_event_specifier(event_code); + sci_rnc->suspend_type = scu_get_event_type(event_code); break; case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED); - sci_rnc->suspension_code = scu_get_event_specifier(event_code); + sci_rnc->suspend_type = scu_get_event_type(event_code); break; default: goto out; @@ -438,16 +439,16 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con case SCI_RNC_AWAIT_SUSPENSION: switch (scu_get_event_type(event_code)) { case SCU_EVENT_TL_RNC_SUSPEND_TX: - sci_change_state(&sci_rnc->sm, SCI_RNC_TX_SUSPENDED); - sci_rnc->suspension_code = scu_get_event_specifier(event_code); + next_state = SCI_RNC_TX_SUSPENDED; break; case SCU_EVENT_TL_RNC_SUSPEND_TX_RX: - sci_change_state(&sci_rnc->sm, SCI_RNC_TX_RX_SUSPENDED); - sci_rnc->suspension_code = scu_get_event_specifier(event_code); + next_state = SCI_RNC_TX_RX_SUSPENDED; break; default: goto out; } + if (sci_rnc->suspend_type == scu_get_event_type(event_code)) + sci_change_state(&sci_rnc->sm, next_state); break; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), @@ -502,33 +503,60 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context } } -enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc, - u32 suspend_type, - scics_sds_remote_node_context_callback cb_fn, - void *cb_p) +enum sci_status sci_remote_node_context_suspend( + struct sci_remote_node_context *sci_rnc, + enum sci_remote_node_suspension_reasons suspend_reason, + u32 suspend_type, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p) { - enum scis_sds_remote_node_context_states state; + enum scis_sds_remote_node_context_states state + = sci_rnc->sm.current_state_id; + struct isci_remote_device *idev = rnc_to_dev(sci_rnc); + enum sci_status status = SCI_FAILURE_INVALID_STATE; - state = sci_rnc->sm.current_state_id; - if (state != SCI_RNC_READY) { + /* Disable automatic state continuations if explicitly suspending. */ + if (suspend_reason == SCI_SOFTWARE_SUSPENSION) + sci_rnc->destination_state + = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; + switch (state) { + case SCI_RNC_READY: + break; + case SCI_RNC_TX_SUSPENDED: + if (suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX) + status = SCI_SUCCESS; + break; + case SCI_RNC_TX_RX_SUSPENDED: + if (suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX_RX) + status = SCI_SUCCESS; + break; + case SCI_RNC_AWAIT_SUSPENSION: + if ((sci_rnc->suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX_RX) + || (suspend_type == sci_rnc->suspend_type)) + return SCI_SUCCESS; + break; + default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), "%s: invalid state %s\n", __func__, rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } + sci_rnc->user_callback = cb_fn; + sci_rnc->user_cookie = cb_p; + sci_rnc->suspend_type = suspend_type; - sci_rnc->user_callback = cb_fn; - sci_rnc->user_cookie = cb_p; - sci_rnc->suspension_code = suspend_type; - - if (suspend_type == SCI_SOFTWARE_SUSPENSION) { - sci_remote_device_post_request(rnc_to_dev(sci_rnc), - SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX); - isci_dev_set_hang_detection_timeout(rnc_to_dev(sci_rnc), - 0x00000001); + if (status == SCI_SUCCESS) { /* Already in the destination state? */ + sci_remote_node_context_notify_user(sci_rnc); + return SCI_SUCCESS; + } + if (suspend_reason == SCI_SOFTWARE_SUSPENSION) { + isci_dev_set_hang_detection_timeout(idev, 0x00000001); + sci_remote_device_post_request( + idev, SCI_SOFTWARE_SUSPEND_CMD); } + if (state != SCI_RNC_AWAIT_SUSPENSION) + sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION); - sci_change_state(&sci_rnc->sm, SCI_RNC_AWAIT_SUSPENSION); return SCI_SUCCESS; } diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index a241e0f..276fc49 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -75,8 +75,12 @@ */ #define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX 0x0FFF -#define SCU_HARDWARE_SUSPENSION (0) -#define SCI_SOFTWARE_SUSPENSION (1) +enum sci_remote_node_suspension_reasons { + SCU_HARDWARE_SUSPENSION, + SCI_SOFTWARE_SUSPENSION +}; +#define SCI_SOFTWARE_SUSPEND_CMD SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX +#define SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT SCU_EVENT_TL_RNC_SUSPEND_TX_RX struct isci_request; struct isci_remote_device; @@ -156,10 +160,10 @@ struct sci_remote_node_context { u16 remote_node_index; /** - * This field is the recored suspension code or the reason for the remote node + * This field is the recored suspension type of the remote node * context suspension. */ - u32 suspension_code; + u32 suspend_type; /** * This field is true if the remote node context is resuming from its current @@ -200,6 +204,7 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context void *callback_parameter); enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc, u32 suspend_type, + u32 suspension_code, scics_sds_remote_node_context_callback cb_fn, void *cb_p); enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc, diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index dcd26ea..605dc68 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2116,9 +2116,6 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq * completion. */ if (ireq->stp.rsp.fis_type == FIS_REGD2H) { - sci_remote_device_suspend(ireq->target_device, - SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code))); - ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE; ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID; sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); @@ -2138,13 +2135,6 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq /* TODO We can retry the command for SCU_TASK_DONE_CMD_LL_R_ERR * - this comes only for B0 */ - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_INV_FIS_LEN): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_MAX_PLD_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_LL_R_ERR): - case SCU_MAKE_COMPLETION_STATUS(SCU_TASK_DONE_CMD_LL_R_ERR): - sci_remote_device_suspend(ireq->target_device, - SCU_EVENT_SPECIFIC(SCU_NORMALIZE_COMPLETION_STATUS(completion_code))); - /* Fall through to the default case */ default: /* All other completion status cause the IO to be complete. */ ireq->scu_status = SCU_NORMALIZE_COMPLETION_STATUS(completion_code); @@ -2262,15 +2252,152 @@ static enum sci_status atapi_data_tc_completion_handler(struct isci_request *ire return status; } +static int sci_request_smp_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + return 1; + } + return 0; +} + +static int sci_request_smp_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + return 0; /* There are no Tx/Rx SMP suspend conditions. */ +} + +static int sci_request_ssp_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_TX_RAW_CMD_ERR: + case SCU_TASK_DONE_LF_ERR: + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY: + case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED: + case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED: + return 1; + } + return 0; +} + +static int sci_request_ssp_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + return 0; /* There are no Tx/Rx SSP suspend conditions. */ +} + +static int sci_request_stpsata_completion_status_is_tx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_TX_RAW_CMD_ERR: + case SCU_TASK_DONE_LL_R_ERR: + case SCU_TASK_DONE_LL_PERR: + case SCU_TASK_DONE_REG_ERR: + case SCU_TASK_DONE_SDB_ERR: + case SCU_TASK_OPEN_REJECT_WRONG_DESTINATION: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: + case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: + case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: + case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: + case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY: + case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED: + case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED: + return 1; + } + return 0; +} + + +static int sci_request_stpsata_completion_status_is_tx_rx_suspend( + unsigned int completion_status) +{ + switch (completion_status) { + case SCU_TASK_DONE_LF_ERR: + case SCU_TASK_DONE_LL_SY_TERM: + case SCU_TASK_DONE_LL_LF_TERM: + case SCU_TASK_DONE_BREAK_RCVD: + case SCU_TASK_DONE_INV_FIS_LEN: + case SCU_TASK_DONE_UNEXP_FIS: + case SCU_TASK_DONE_UNEXP_SDBFIS: + case SCU_TASK_DONE_MAX_PLD_ERR: + return 1; + } + return 0; +} + +static void sci_request_handle_suspending_completions( + struct isci_request *ireq, + u32 completion_code) +{ + int is_tx = 0; + int is_tx_rx = 0; + + switch (ireq->protocol) { + case SAS_PROTOCOL_SMP: + is_tx = sci_request_smp_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = sci_request_smp_completion_status_is_tx_rx_suspend( + completion_code); + break; + case SAS_PROTOCOL_SSP: + is_tx = sci_request_ssp_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = sci_request_ssp_completion_status_is_tx_rx_suspend( + completion_code); + break; + case SAS_PROTOCOL_STP: + is_tx = sci_request_stpsata_completion_status_is_tx_suspend( + completion_code); + is_tx_rx = + sci_request_stpsata_completion_status_is_tx_rx_suspend( + completion_code); + break; + default: + dev_warn(&ireq->isci_host->pdev->dev, + "%s: request %p has no valid protocol\n", + __func__, ireq); + break; + } + if (is_tx || is_tx_rx) { + BUG_ON(is_tx && is_tx_rx); + + sci_remote_node_context_suspend( + &ireq->target_device->rnc, + SCU_HARDWARE_SUSPENSION, + (is_tx_rx) ? SCU_EVENT_TL_RNC_SUSPEND_TX_RX + : SCU_EVENT_TL_RNC_SUSPEND_TX, + NULL, NULL); + } +} + enum sci_status sci_io_request_tc_completion(struct isci_request *ireq, - u32 completion_code) + u32 completion_code) { enum sci_base_request_states state; struct isci_host *ihost = ireq->owning_controller; state = ireq->sm.current_state_id; + /* Decode those completions that signal upcoming suspension events. */ + sci_request_handle_suspending_completions( + ireq, SCU_GET_COMPLETION_TL_STATUS(completion_code)); + switch (state) { case SCI_REQ_STARTED: return request_started_state_tc_event(ireq, completion_code); diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 4961f9f..e845a31 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -414,5 +414,4 @@ static inline int isci_task_is_ncq_recovery(struct sas_task *task) task->ata_task.fis.lbal == ATA_LOG_SATA_NCQ); } - #endif /* !defined(_ISCI_REQUEST_H_) */ diff --git a/drivers/scsi/isci/scu_completion_codes.h b/drivers/scsi/isci/scu_completion_codes.h index c8b329c..071cb74 100644 --- a/drivers/scsi/isci/scu_completion_codes.h +++ b/drivers/scsi/isci/scu_completion_codes.h @@ -224,6 +224,7 @@ * 32-bit value like we want, each immediate value must be cast to a u32. */ #define SCU_TASK_DONE_GOOD ((u32)0x00) +#define SCU_TASK_DONE_TX_RAW_CMD_ERR ((u32)0x08) #define SCU_TASK_DONE_CRC_ERR ((u32)0x14) #define SCU_TASK_DONE_CHECK_RESPONSE ((u32)0x14) #define SCU_TASK_DONE_GEN_RESPONSE ((u32)0x15) @@ -237,6 +238,7 @@ #define SCU_TASK_DONE_LL_LF_TERM ((u32)0x1A) #define SCU_TASK_DONE_DATA_LEN_ERR ((u32)0x1A) #define SCU_TASK_DONE_LL_CL_TERM ((u32)0x1B) +#define SCU_TASK_DONE_BREAK_RCVD ((u32)0x1B) #define SCU_TASK_DONE_LL_ABORT_ERR ((u32)0x1B) #define SCU_TASK_DONE_SEQ_INV_TYPE ((u32)0x1C) #define SCU_TASK_DONE_UNEXP_XR ((u32)0x1C) -- cgit v1.1 From 726980d56908f2e230624394f03743689db3110c Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:50 -0800 Subject: isci: Terminate outstanding TCs on TX/RX RNC suspensions. TCs must only be terminated when RNCs are suspended. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 22 +++---- drivers/scsi/isci/remote_device.c | 106 ++++++++++++++++++++++++++++---- drivers/scsi/isci/remote_device.h | 10 +++ drivers/scsi/isci/remote_node_context.c | 56 +++++++++++++++++ drivers/scsi/isci/remote_node_context.h | 2 + drivers/scsi/isci/request.c | 22 ++++--- drivers/scsi/isci/request.h | 2 + 7 files changed, 188 insertions(+), 32 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 5832b13..d241b57 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -2696,18 +2696,18 @@ enum sci_status sci_controller_terminate_request(struct isci_host *ihost, __func__, ihost->sm.current_state_id); return SCI_FAILURE_INVALID_STATE; } - status = sci_io_request_terminate(ireq); - if (status != SCI_SUCCESS) - return status; - - /* - * Utilize the original post context command and or in the POST_TC_ABORT - * request sub-type. - */ - sci_controller_post_request(ihost, - ireq->post_context | SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT); - return SCI_SUCCESS; + if ((status == SCI_SUCCESS) && + !test_bit(IREQ_PENDING_ABORT, &ireq->flags) && + !test_and_set_bit(IREQ_TC_ABORT_POSTED, &ireq->flags)) { + /* Utilize the original post context command and or in the + * POST_TC_ABORT request sub-type. + */ + sci_controller_post_request( + ihost, ireq->post_context | + SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT); + } + return status; } /** diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index b1a8000..9f03877 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -133,6 +133,50 @@ static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote wake_up(&ihost->eventq); } +static enum sci_status sci_remote_device_suspend( + struct isci_remote_device *idev) +{ + return sci_remote_node_context_suspend( + &idev->rnc, + SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, + NULL, NULL); +} + +enum sci_status isci_remote_device_suspend( + struct isci_host *ihost, + struct isci_remote_device *idev) +{ + enum sci_status status; + unsigned long flags; + + spin_lock_irqsave(&ihost->scic_lock, flags); + + if (isci_lookup_device(idev->domain_dev) == NULL) { + spin_unlock_irqrestore(&ihost->scic_lock, flags); + status = SCI_FAILURE; + } else { + status = sci_remote_device_suspend(idev); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + if (status == SCI_SUCCESS) { + wait_event(ihost->eventq, + test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) + || !test_bit(IDEV_ALLOCATED, &idev->flags)); + + status = test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) + ? SCI_SUCCESS : SCI_FAILURE; + dev_dbg(&ihost->pdev->dev, + "%s: idev=%p, wait done, device is %s\n", + __func__, idev, + test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) + ? "" : ""); + + } + isci_put_device(idev); + } + return status; +} + /* called once the remote node context is ready to be freed. * The remote device can now report that its stop operation is complete. none */ @@ -144,7 +188,9 @@ static void rnc_destruct_done(void *_dev) sci_change_state(&idev->sm, SCI_DEV_STOPPED); } -static enum sci_status sci_remote_device_terminate_requests(struct isci_remote_device *idev) +static enum sci_status sci_remote_device_terminate_requests_checkabort( + struct isci_remote_device *idev, + int check_abort_pending) { struct isci_host *ihost = idev->owning_port->owning_controller; enum sci_status status = SCI_SUCCESS; @@ -155,7 +201,9 @@ static enum sci_status sci_remote_device_terminate_requests(struct isci_remote_d enum sci_status s; if (!test_bit(IREQ_ACTIVE, &ireq->flags) || - ireq->target_device != idev) + (ireq->target_device != idev) || + (check_abort_pending && !test_bit(IREQ_PENDING_ABORT, + &ireq->flags))) continue; s = sci_controller_terminate_request(ihost, idev, ireq); @@ -166,6 +214,12 @@ static enum sci_status sci_remote_device_terminate_requests(struct isci_remote_d return status; } +enum sci_status sci_remote_device_terminate_requests( + struct isci_remote_device *idev) +{ + return sci_remote_device_terminate_requests_checkabort(idev, 0); +} + enum sci_status sci_remote_device_stop(struct isci_remote_device *idev, u32 timeout) { @@ -265,14 +319,6 @@ enum sci_status sci_remote_device_reset_complete(struct isci_remote_device *idev return SCI_SUCCESS; } -enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev) -{ - return sci_remote_node_context_suspend(&idev->rnc, - SCI_SOFTWARE_SUSPENSION, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, - NULL, NULL); -} - enum sci_status sci_remote_device_frame_handler(struct isci_remote_device *idev, u32 frame_index) { @@ -1186,7 +1232,7 @@ static enum sci_status sci_remote_device_ea_construct(struct isci_port *iport, * the device when there have been no phys added to it. */ static enum sci_status sci_remote_device_start(struct isci_remote_device *idev, - u32 timeout) + u32 timeout) { struct sci_base_state_machine *sm = &idev->sm; enum sci_remote_device_states state = sm->current_state_id; @@ -1413,3 +1459,41 @@ int isci_remote_device_found(struct domain_device *dev) return status == SCI_SUCCESS ? 0 : -ENODEV; } + +enum sci_status isci_remote_device_reset( + struct isci_remote_device *idev) +{ + struct isci_host *ihost = dev_to_ihost(idev->domain_dev); + unsigned long flags; + enum sci_status status; + + /* Wait for the device suspend. */ + status = isci_remote_device_suspend(ihost, idev); + if (status != SCI_SUCCESS) { + dev_dbg(&ihost->pdev->dev, + "%s: isci_remote_device_suspend(%p) returned %d!\n", + __func__, idev, status); + return status; + } + spin_lock_irqsave(&ihost->scic_lock, flags); + status = sci_remote_device_reset(idev); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + if (status != SCI_SUCCESS) { + dev_dbg(&ihost->pdev->dev, + "%s: sci_remote_device_reset(%p) returned %d!\n", + __func__, idev, status); + } + return status; +} + +int isci_remote_device_is_safe_to_abort( + struct isci_remote_device *idev) +{ + return sci_remote_node_context_is_safe_to_abort(&idev->rnc); +} + +enum sci_status sci_remote_device_abort_requests_pending_abort( + struct isci_remote_device *idev) +{ + return sci_remote_device_terminate_requests_checkabort(idev, 1); +} diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 3915905..ae508ee 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -85,6 +85,7 @@ struct isci_remote_device { #define IDEV_GONE 3 #define IDEV_IO_READY 4 #define IDEV_IO_NCQERROR 5 + #define IDEV_TXRX_SUSPENDED 6 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -335,4 +336,13 @@ void sci_remote_device_post_request( struct isci_remote_device *idev, u32 request); +enum sci_status sci_remote_device_terminate_requests( + struct isci_remote_device *idev); + +int isci_remote_device_is_safe_to_abort( + struct isci_remote_device *idev); + +enum sci_status +sci_remote_device_abort_requests_pending_abort( + struct isci_remote_device *idev); #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index f180c72..7a8347e 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -268,6 +268,8 @@ static void sci_remote_node_context_invalidating_state_enter(struct sci_base_sta { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); + /* Terminate outstanding requests pending abort. */ + sci_remote_device_abort_requests_pending_abort(rnc_to_dev(rnc)); sci_remote_node_context_invalidate_context_buffer(rnc); } @@ -312,10 +314,28 @@ static void sci_remote_node_context_tx_suspended_state_enter(struct sci_base_sta static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_state_machine *sm) { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); + struct isci_remote_device *idev = rnc_to_dev(rnc); + struct isci_host *ihost = idev->owning_port->owning_controller; + + set_bit(IDEV_TXRX_SUSPENDED, &idev->flags); + /* Terminate outstanding requests pending abort. */ + sci_remote_device_abort_requests_pending_abort(idev); + + wake_up(&ihost->eventq); sci_remote_node_context_continue_state_transitions(rnc); } +static void sci_remote_node_context_tx_rx_suspended_state_exit( + struct sci_base_state_machine *sm) +{ + struct sci_remote_node_context *rnc + = container_of(sm, typeof(*rnc), sm); + struct isci_remote_device *idev = rnc_to_dev(rnc); + + clear_bit(IDEV_TXRX_SUSPENDED, &idev->flags); +} + static void sci_remote_node_context_await_suspend_state_exit( struct sci_base_state_machine *sm) { @@ -346,6 +366,8 @@ static const struct sci_base_state sci_remote_node_context_state_table[] = { }, [SCI_RNC_TX_RX_SUSPENDED] = { .enter_state = sci_remote_node_context_tx_rx_suspended_state_enter, + .exit_state + = sci_remote_node_context_tx_rx_suspended_state_exit, }, [SCI_RNC_AWAIT_SUSPENSION] = { .exit_state = sci_remote_node_context_await_suspend_state_exit, @@ -515,6 +537,13 @@ enum sci_status sci_remote_node_context_suspend( struct isci_remote_device *idev = rnc_to_dev(sci_rnc); enum sci_status status = SCI_FAILURE_INVALID_STATE; + dev_dbg(scirdev_to_dev(idev), + "%s: current state %d, current suspend_type %x dest state %d," + " arg suspend_reason %d, arg suspend_type %x", + __func__, state, sci_rnc->suspend_type, + sci_rnc->destination_state, suspend_reason, + suspend_type); + /* Disable automatic state continuations if explicitly suspending. */ if (suspend_reason == SCI_SOFTWARE_SUSPENSION) sci_rnc->destination_state @@ -546,7 +575,10 @@ enum sci_status sci_remote_node_context_suspend( sci_rnc->suspend_type = suspend_type; if (status == SCI_SUCCESS) { /* Already in the destination state? */ + struct isci_host *ihost = idev->owning_port->owning_controller; + sci_remote_node_context_notify_user(sci_rnc); + wake_up_all(&ihost->eventq); /* Let observers look. */ return SCI_SUCCESS; } if (suspend_reason == SCI_SOFTWARE_SUSPENSION) { @@ -661,3 +693,27 @@ enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_contex return SCI_FAILURE_INVALID_STATE; } } + +int sci_remote_node_context_is_safe_to_abort( + struct sci_remote_node_context *sci_rnc) +{ + enum scis_sds_remote_node_context_states state; + + state = sci_rnc->sm.current_state_id; + switch (state) { + case SCI_RNC_INVALIDATING: + case SCI_RNC_TX_RX_SUSPENDED: + return 1; + case SCI_RNC_POSTING: + case SCI_RNC_RESUMING: + case SCI_RNC_READY: + case SCI_RNC_TX_SUSPENDED: + case SCI_RNC_AWAIT_SUSPENSION: + case SCI_RNC_INITIAL: + return 0; + default: + dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: invalid state %d\n", __func__, state); + return 0; + } +} diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 276fc49..5ddf88b 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -214,5 +214,7 @@ enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_contex struct isci_request *ireq); enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc, struct isci_request *ireq); +int sci_remote_node_context_is_safe_to_abort( + struct sci_remote_node_context *sci_rnc); #endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */ diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 605dc68..1f314d0 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -863,6 +863,8 @@ sci_io_request_terminate(struct isci_request *ireq) switch (state) { case SCI_REQ_CONSTRUCTED: + /* Set to make sure no HW terminate posting is done: */ + set_bit(IREQ_TC_ABORT_POSTED, &ireq->flags); ireq->scu_status = SCU_TASK_DONE_TASK_ABORT; ireq->sci_status = SCI_FAILURE_IO_TERMINATED; sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); @@ -883,8 +885,7 @@ sci_io_request_terminate(struct isci_request *ireq) case SCI_REQ_ATAPI_WAIT_PIO_SETUP: case SCI_REQ_ATAPI_WAIT_D2H: case SCI_REQ_ATAPI_WAIT_TC_COMP: - sci_change_state(&ireq->sm, SCI_REQ_ABORTING); - return SCI_SUCCESS; + /* Fall through and change state to ABORTING... */ case SCI_REQ_TASK_WAIT_TC_RESP: /* The task frame was already confirmed to have been * sent by the SCU HW. Since the state machine is @@ -893,20 +894,21 @@ sci_io_request_terminate(struct isci_request *ireq) * and don't wait for the task response. */ sci_change_state(&ireq->sm, SCI_REQ_ABORTING); - sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); - return SCI_SUCCESS; + /* Fall through and handle like ABORTING... */ case SCI_REQ_ABORTING: - /* If a request has a termination requested twice, return - * a failure indication, since HW confirmation of the first - * abort is still outstanding. + if (!isci_remote_device_is_safe_to_abort(ireq->target_device)) + set_bit(IREQ_PENDING_ABORT, &ireq->flags); + else + clear_bit(IREQ_PENDING_ABORT, &ireq->flags); + /* If the request is only waiting on the remote device + * suspension, return SUCCESS so the caller will wait too. */ + return SCI_SUCCESS; case SCI_REQ_COMPLETED: default: dev_warn(&ireq->owning_controller->pdev->dev, "%s: SCIC IO Request requested to abort while in wrong " - "state %d\n", - __func__, - ireq->sm.current_state_id); + "state %d\n", __func__, ireq->sm.current_state_id); break; } diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index e845a31..8d55f78 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -102,6 +102,8 @@ struct isci_request { #define IREQ_TERMINATED 1 #define IREQ_TMF 2 #define IREQ_ACTIVE 3 + #define IREQ_PENDING_ABORT 4 /* Set == device was not suspended yet */ + #define IREQ_TC_ABORT_POSTED 5 unsigned long flags; /* XXX kill ttype and ttype_ptr, allocate full sas_task */ union ttype_ptr_union { -- cgit v1.1 From 5b6bf225e7fc249c703e19bf2c983d1a59178874 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:51 -0800 Subject: isci: Manage device suspensions during TC terminations. TCs must be terminated only while the RNC is suspended. This commit adds remote device suspensions and resumptions in the abort, reset and termination paths. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 90 +++++++++++++++++++++++++++++++-------- drivers/scsi/isci/remote_device.h | 33 ++++++++++++++ drivers/scsi/isci/task.c | 80 ++++++++++++++++++++-------------- 3 files changed, 154 insertions(+), 49 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 9f03877..4f76dcd 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -143,6 +143,12 @@ static enum sci_status sci_remote_device_suspend( NULL, NULL); } +static int isci_remote_device_suspendcheck(struct isci_remote_device *idev) +{ + return test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) + || !test_bit(IDEV_ALLOCATED, &idev->flags); +} + enum sci_status isci_remote_device_suspend( struct isci_host *ihost, struct isci_remote_device *idev) @@ -151,18 +157,18 @@ enum sci_status isci_remote_device_suspend( unsigned long flags; spin_lock_irqsave(&ihost->scic_lock, flags); - - if (isci_lookup_device(idev->domain_dev) == NULL) { + if (isci_get_device(idev->domain_dev) == NULL) { spin_unlock_irqrestore(&ihost->scic_lock, flags); status = SCI_FAILURE; } else { status = sci_remote_device_suspend(idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); if (status == SCI_SUCCESS) { + dev_dbg(&ihost->pdev->dev, + "%s: idev=%p, about to wait\n", + __func__, idev); wait_event(ihost->eventq, - test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) - || !test_bit(IDEV_ALLOCATED, &idev->flags)); - + isci_remote_device_suspendcheck(idev)); status = test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) ? SCI_SUCCESS : SCI_FAILURE; dev_dbg(&ihost->pdev->dev, @@ -171,7 +177,10 @@ enum sci_status isci_remote_device_suspend( test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) ? "" : ""); - } + } else + dev_dbg(scirdev_to_dev(idev), + "%s: sci_remote_device_suspend failed, " + "status = %d\n", __func__, status); isci_put_device(idev); } return status; @@ -1218,6 +1227,35 @@ static enum sci_status sci_remote_device_ea_construct(struct isci_port *iport, return SCI_SUCCESS; } +enum sci_status sci_remote_device_resume( + struct isci_remote_device *idev, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p) +{ + enum sci_status status; + + status = sci_remote_node_context_resume(&idev->rnc, cb_fn, cb_p); + if (status != SCI_SUCCESS) + dev_dbg(scirdev_to_dev(idev), "%s: failed to resume: %d\n", + __func__, status); + return status; +} + +enum sci_status isci_remote_device_resume( + struct isci_host *ihost, + struct isci_remote_device *idev, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p) +{ + unsigned long flags; + enum sci_status status; + + spin_lock_irqsave(&ihost->scic_lock, flags); + status = sci_remote_device_resume(idev, cb_fn, cb_p); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + + return status; +} /** * sci_remote_device_start() - This method will start the supplied remote * device. This method enables normal IO requests to flow through to the @@ -1244,9 +1282,8 @@ static enum sci_status sci_remote_device_start(struct isci_remote_device *idev, return SCI_FAILURE_INVALID_STATE; } - status = sci_remote_node_context_resume(&idev->rnc, - remote_device_resume_done, - idev); + status = sci_remote_device_resume(idev, remote_device_resume_done, + idev); if (status != SCI_SUCCESS) return status; @@ -1461,26 +1498,29 @@ int isci_remote_device_found(struct domain_device *dev) } enum sci_status isci_remote_device_reset( + struct isci_host *ihost, struct isci_remote_device *idev) { - struct isci_host *ihost = dev_to_ihost(idev->domain_dev); unsigned long flags; enum sci_status status; - /* Wait for the device suspend. */ - status = isci_remote_device_suspend(ihost, idev); + /* Put the device into a reset state so the suspension will not + * automatically resume. + */ + spin_lock_irqsave(&ihost->scic_lock, flags); + status = sci_remote_device_reset(idev); + spin_unlock_irqrestore(&ihost->scic_lock, flags); if (status != SCI_SUCCESS) { dev_dbg(&ihost->pdev->dev, - "%s: isci_remote_device_suspend(%p) returned %d!\n", + "%s: sci_remote_device_reset(%p) returned %d!\n", __func__, idev, status); return status; } - spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset(idev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* Wait for the device suspend. */ + status = isci_remote_device_suspend(ihost, idev); if (status != SCI_SUCCESS) { dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset(%p) returned %d!\n", + "%s: isci_remote_device_suspend(%p) returned %d!\n", __func__, idev, status); } return status; @@ -1497,3 +1537,19 @@ enum sci_status sci_remote_device_abort_requests_pending_abort( { return sci_remote_device_terminate_requests_checkabort(idev, 1); } + +enum sci_status isci_remote_device_reset_complete( + struct isci_host *ihost, + struct isci_remote_device *idev) +{ + unsigned long flags; + enum sci_status status; + + spin_lock_irqsave(&ihost->scic_lock, flags); + status = sci_remote_device_reset_complete(idev); + sci_remote_device_resume(idev, NULL, NULL); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + + return status; +} + diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index ae508ee..a6a376e 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -106,6 +106,16 @@ struct isci_remote_device { #define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000 /* device reference routines must be called under sci_lock */ +static inline struct isci_remote_device *isci_get_device( + struct domain_device *dev) +{ + struct isci_remote_device *idev = dev->lldd_dev; + + if (idev) + kref_get(&idev->kref); + return idev; +} + static inline struct isci_remote_device *isci_lookup_device(struct domain_device *dev) { struct isci_remote_device *idev = dev->lldd_dev; @@ -345,4 +355,27 @@ int isci_remote_device_is_safe_to_abort( enum sci_status sci_remote_device_abort_requests_pending_abort( struct isci_remote_device *idev); + +enum sci_status isci_remote_device_suspend( + struct isci_host *ihost, + struct isci_remote_device *idev); + +enum sci_status sci_remote_device_resume( + struct isci_remote_device *idev, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p); + +enum sci_status isci_remote_device_resume( + struct isci_host *ihost, + struct isci_remote_device *idev, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p); + +enum sci_status isci_remote_device_reset( + struct isci_host *ihost, + struct isci_remote_device *idev); + +enum sci_status isci_remote_device_reset_complete( + struct isci_host *ihost, + struct isci_remote_device *idev); #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 374254e..9b8632f 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -716,6 +716,8 @@ void isci_terminate_pending_requests(struct isci_host *ihost, unsigned long flags; LIST_HEAD(list); + isci_remote_device_suspend(ihost, idev); + spin_lock_irqsave(&ihost->scic_lock, flags); list_splice_init(&idev->reqs_in_process, &list); @@ -826,40 +828,47 @@ static int isci_task_send_lu_reset_sas( int isci_task_lu_reset(struct domain_device *dev, u8 *lun) { - struct isci_host *isci_host = dev_to_ihost(dev); + struct isci_host *ihost = dev_to_ihost(dev); struct isci_remote_device *isci_device; unsigned long flags; int ret; - spin_lock_irqsave(&isci_host->scic_lock, flags); + spin_lock_irqsave(&ihost->scic_lock, flags); isci_device = isci_lookup_device(dev); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, + dev_dbg(&ihost->pdev->dev, "%s: domain_device=%p, isci_host=%p; isci_device=%p\n", - __func__, dev, isci_host, isci_device); + __func__, dev, ihost, isci_device); if (!isci_device) { /* If the device is gone, stop the escalations. */ - dev_dbg(&isci_host->pdev->dev, "%s: No dev\n", __func__); + dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__); ret = TMF_RESP_FUNC_COMPLETE; goto out; } + if (isci_remote_device_suspend(ihost, isci_device) != SCI_SUCCESS) { + dev_dbg(&ihost->pdev->dev, + "%s: device = %p; failed to suspend\n", + __func__, isci_device); + ret = TMF_RESP_FUNC_FAILED; + goto out; + } /* Send the task management part of the reset. */ if (dev_is_sata(dev)) { sas_ata_schedule_reset(dev); ret = TMF_RESP_FUNC_COMPLETE; } else - ret = isci_task_send_lu_reset_sas(isci_host, isci_device, lun); + ret = isci_task_send_lu_reset_sas(ihost, isci_device, lun); /* If the LUN reset worked, all the I/O can now be terminated. */ - if (ret == TMF_RESP_FUNC_COMPLETE) + if (ret == TMF_RESP_FUNC_COMPLETE) { /* Terminate all I/O now. */ - isci_terminate_pending_requests(isci_host, - isci_device); - + isci_terminate_pending_requests(ihost, isci_device); + isci_remote_device_resume(ihost, isci_device, NULL, NULL); + } out: isci_put_device(isci_device); return ret; @@ -976,7 +985,7 @@ int isci_task_abort_task(struct sas_task *task) spin_unlock(&task->task_state_lock); spin_unlock_irqrestore(&isci_host->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, + dev_warn(&isci_host->pdev->dev, "%s: dev = %p, task = %p, old_request == %p\n", __func__, isci_device, task, old_request); @@ -998,7 +1007,7 @@ int isci_task_abort_task(struct sas_task *task) ret = TMF_RESP_FUNC_COMPLETE; - dev_dbg(&isci_host->pdev->dev, + dev_warn(&isci_host->pdev->dev, "%s: abort task not needed for %p\n", __func__, task); goto out; @@ -1022,7 +1031,7 @@ int isci_task_abort_task(struct sas_task *task) /* The request was already being handled by someone else (because * they got to set the state away from started). */ - dev_dbg(&isci_host->pdev->dev, + dev_warn(&isci_host->pdev->dev, "%s: device = %p; old_request %p already being aborted\n", __func__, isci_device, old_request); @@ -1035,7 +1044,7 @@ int isci_task_abort_task(struct sas_task *task) spin_unlock_irqrestore(&isci_host->scic_lock, flags); - dev_dbg(&isci_host->pdev->dev, + dev_warn(&isci_host->pdev->dev, "%s: %s request" " or complete_in_target (%d), thus no TMF\n", __func__, @@ -1068,6 +1077,15 @@ int isci_task_abort_task(struct sas_task *task) */ perform_termination = 1; + if (isci_device && !test_bit(IDEV_GONE, &isci_device->flags) && + (isci_remote_device_suspend(isci_host, isci_device) + != SCI_SUCCESS)) { + dev_warn(&isci_host->pdev->dev, + "%s: device = %p; failed to suspend\n", + __func__, isci_device); + goto out; + } + } else { /* Fill in the tmf stucture */ isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort, @@ -1076,6 +1094,14 @@ int isci_task_abort_task(struct sas_task *task) spin_unlock_irqrestore(&isci_host->scic_lock, flags); + if (isci_remote_device_suspend(isci_host, isci_device) + != SCI_SUCCESS) { + dev_warn(&isci_host->pdev->dev, + "%s: device = %p; failed to suspend\n", + __func__, isci_device); + goto out; + } + #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* 1/2 second timeout */ ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_ABORT_TASK_TIMEOUT_MS); @@ -1083,7 +1109,7 @@ int isci_task_abort_task(struct sas_task *task) if (ret == TMF_RESP_FUNC_COMPLETE) perform_termination = 1; else - dev_dbg(&isci_host->pdev->dev, + dev_warn(&isci_host->pdev->dev, "%s: isci_task_send_tmf failed\n", __func__); } if (perform_termination) { @@ -1094,6 +1120,7 @@ int isci_task_abort_task(struct sas_task *task) */ isci_terminate_request_core(isci_host, isci_device, old_request); + isci_remote_device_resume(isci_host, isci_device, NULL, NULL); } /* Make sure we do not leave a reference to aborted_io_completion */ @@ -1251,21 +1278,13 @@ static int isci_reset_device(struct isci_host *ihost, struct isci_remote_device *idev) { int rc; - unsigned long flags; enum sci_status status; struct sas_phy *phy = sas_get_local_phy(dev); struct isci_port *iport = dev->port->lldd_port; dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev); - spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset(idev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - if (status != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset(%p) returned %d!\n", - __func__, idev, status); + if (isci_remote_device_reset(ihost, idev) != SCI_SUCCESS) { rc = TMF_RESP_FUNC_FAILED; goto out; } @@ -1281,15 +1300,12 @@ static int isci_reset_device(struct isci_host *ihost, isci_remote_device_nuke_requests(ihost, idev); /* Since all pending TCs have been cleaned, resume the RNC. */ - spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset_complete(idev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + status = isci_remote_device_reset_complete(ihost, idev); - if (status != SCI_SUCCESS) { + if (status != SCI_SUCCESS) dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset_complete(%p) " + "%s: isci_remote_device_reset_complete(%p) " "returned %d!\n", __func__, idev, status); - } dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev); out: @@ -1305,7 +1321,7 @@ int isci_task_I_T_nexus_reset(struct domain_device *dev) int ret; spin_lock_irqsave(&ihost->scic_lock, flags); - idev = isci_lookup_device(dev); + idev = isci_get_device(dev); spin_unlock_irqrestore(&ihost->scic_lock, flags); if (!idev) { -- cgit v1.1 From 23ec2aa947e83d0a172220f361166b8224875221 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:52 -0800 Subject: isci: Remote device must be suspended for NCQ cleanup. When the remote device enters the NCQ error state, the device must be suspended so that the I/O terminations can take place. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 4f76dcd..f40d429 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -72,6 +72,14 @@ const char *dev_state_name(enum sci_remote_device_states state) } #undef C +static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev) +{ + return sci_remote_node_context_suspend(&idev->rnc, + SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, + NULL, NULL); +} + /** * isci_remote_device_not_ready() - This function is called by the ihost when * the remote device is not ready. We mark the isci device as ready (not @@ -96,6 +104,9 @@ static void isci_remote_device_not_ready(struct isci_host *ihost, case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED: set_bit(IDEV_IO_NCQERROR, &idev->flags); + /* Suspend the remote device so the I/O can be terminated. */ + sci_remote_device_suspend(idev); + /* Kill all outstanding requests for the device. */ list_for_each_entry(ireq, &idev->reqs_in_process, dev_node) { @@ -103,9 +114,7 @@ static void isci_remote_device_not_ready(struct isci_host *ihost, "%s: isci_device = %p request = %p\n", __func__, idev, ireq); - sci_controller_terminate_request(ihost, - idev, - ireq); + sci_controller_terminate_request(ihost, idev, ireq); } /* Fall through into the default case... */ default: @@ -133,16 +142,6 @@ static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote wake_up(&ihost->eventq); } -static enum sci_status sci_remote_device_suspend( - struct isci_remote_device *idev) -{ - return sci_remote_node_context_suspend( - &idev->rnc, - SCI_SOFTWARE_SUSPENSION, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, - NULL, NULL); -} - static int isci_remote_device_suspendcheck(struct isci_remote_device *idev) { return test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) -- cgit v1.1 From 83884014eaaa68834ced39d1c75f1bc20d618ec0 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:52 -0800 Subject: isci: Remote device stop also suspends the RNC and terminates I/O. Fixing the remote device state machine to suspend and terminate all outstanding I/O before the device stopped state is reached. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 23 +++++++++++------------ 1 file changed, 11 insertions(+), 12 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index f40d429..3048e02 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -263,13 +263,15 @@ enum sci_status sci_remote_device_stop(struct isci_remote_device *idev, case SCI_SMP_DEV_IDLE: case SCI_SMP_DEV_CMD: sci_change_state(sm, SCI_DEV_STOPPING); - if (idev->started_request_count == 0) { + if (idev->started_request_count == 0) sci_remote_node_context_destruct(&idev->rnc, - rnc_destruct_done, idev); - return SCI_SUCCESS; - } else - return sci_remote_device_terminate_requests(idev); - break; + rnc_destruct_done, + idev); + else { + sci_remote_device_suspend(idev); + sci_remote_device_terminate_requests(idev); + } + return SCI_SUCCESS; case SCI_DEV_STOPPING: /* All requests should have been terminated, but if there is an * attempt to stop a device already in the stopping state, then @@ -1403,14 +1405,8 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_rem spin_lock_irqsave(&ihost->scic_lock, flags); idev->domain_dev->lldd_dev = NULL; /* disable new lookups */ set_bit(IDEV_GONE, &idev->flags); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - /* Kill all outstanding requests. */ - isci_remote_device_nuke_requests(ihost, idev); set_bit(IDEV_STOP_PENDING, &idev->flags); - - spin_lock_irqsave(&ihost->scic_lock, flags); status = sci_remote_device_stop(idev, 50); spin_unlock_irqrestore(&ihost->scic_lock, flags); @@ -1420,6 +1416,9 @@ enum sci_status isci_remote_device_stop(struct isci_host *ihost, struct isci_rem else wait_for_device_stop(ihost, idev); + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p, waiting done.\n", __func__, idev); + return status; } -- cgit v1.1 From d80ecd5726ce49b5da457d562804b40f0183e8f7 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:53 -0800 Subject: isci: Escalate to I_T_Nexus_Reset when the device is gone. If LUN reset sees that the device is gone, it returns TMF_RESP_FUNC_FAILED to cause libsas to escalate to an I_T_Nexus_Reset. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/task.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 9b8632f..26de06e 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -842,10 +842,10 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) __func__, dev, ihost, isci_device); if (!isci_device) { - /* If the device is gone, stop the escalations. */ + /* If the device is gone, escalate to I_T_Nexus_Reset. */ dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__); - ret = TMF_RESP_FUNC_COMPLETE; + ret = TMF_RESP_FUNC_FAILED; goto out; } if (isci_remote_device_suspend(ihost, isci_device) != SCI_SUCCESS) { -- cgit v1.1 From 14aaa9f0a318bd04cbb9d822524b817e95d8b343 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:54 -0800 Subject: isci: Redesign device suspension, abort, cleanup. This commit changes the means by which outstanding I/Os are handled for cleanup. The likelihood is that this commit will be broken into smaller pieces, however that will be a later revision. Among the changes: - All completion structures have been removed from the tmf and abort paths. - Now using one completed I/O list, with the I/O completed in host bit being used to select error or normal callback paths. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 86 ++-- drivers/scsi/isci/host.h | 1 - drivers/scsi/isci/init.c | 1 - drivers/scsi/isci/remote_device.c | 255 +++++------ drivers/scsi/isci/remote_device.h | 15 +- drivers/scsi/isci/remote_node_context.c | 23 +- drivers/scsi/isci/remote_node_context.h | 4 +- drivers/scsi/isci/request.c | 509 ++++++--------------- drivers/scsi/isci/request.h | 108 +---- drivers/scsi/isci/task.c | 758 +++++--------------------------- drivers/scsi/isci/task.h | 132 +----- 11 files changed, 418 insertions(+), 1474 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index d241b57..25d537e 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1089,33 +1089,25 @@ void isci_host_completion_routine(unsigned long data) { struct isci_host *ihost = (struct isci_host *)data; struct list_head completed_request_list; - struct list_head errored_request_list; struct list_head *current_position; struct list_head *next_position; struct isci_request *request; - struct isci_request *next_request; struct sas_task *task; u16 active; INIT_LIST_HEAD(&completed_request_list); - INIT_LIST_HEAD(&errored_request_list); spin_lock_irq(&ihost->scic_lock); sci_controller_completion_handler(ihost); /* Take the lists of completed I/Os from the host. */ - list_splice_init(&ihost->requests_to_complete, &completed_request_list); - /* Take the list of errored I/Os from the host. */ - list_splice_init(&ihost->requests_to_errorback, - &errored_request_list); - spin_unlock_irq(&ihost->scic_lock); - /* Process any completions in the lists. */ + /* Process any completions in the list. */ list_for_each_safe(current_position, next_position, &completed_request_list) { @@ -1123,23 +1115,30 @@ void isci_host_completion_routine(unsigned long data) completed_node); task = isci_request_access_task(request); - /* Normal notification (task_done) */ - dev_dbg(&ihost->pdev->dev, - "%s: Normal - request/task = %p/%p\n", - __func__, - request, - task); /* Return the task to libsas */ if (task != NULL) { task->lldd_task = NULL; - if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) { - - /* If the task is already in the abort path, - * the task_done callback cannot be called. - */ - task->task_done(task); + if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags) && + !(task->task_state_flags & SAS_TASK_STATE_ABORTED)) { + if (test_bit(IREQ_COMPLETE_IN_TARGET, + &request->flags)) { + + /* Normal notification (task_done) */ + dev_dbg(&ihost->pdev->dev, "%s: Normal" + " - request/task = %p/%p\n", + __func__, request, task); + + task->task_done(task); + } else { + dev_warn(&ihost->pdev->dev, + "%s: Error - request/task" + " = %p/%p\n", + __func__, request, task); + + sas_task_abort(task); + } } } @@ -1147,44 +1146,6 @@ void isci_host_completion_routine(unsigned long data) isci_free_tag(ihost, request->io_tag); spin_unlock_irq(&ihost->scic_lock); } - list_for_each_entry_safe(request, next_request, &errored_request_list, - completed_node) { - - task = isci_request_access_task(request); - - /* Use sas_task_abort */ - dev_warn(&ihost->pdev->dev, - "%s: Error - request/task = %p/%p\n", - __func__, - request, - task); - - if (task != NULL) { - - /* Put the task into the abort path if it's not there - * already. - */ - if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) - sas_task_abort(task); - - } else { - /* This is a case where the request has completed with a - * status such that it needed further target servicing, - * but the sas_task reference has already been removed - * from the request. Since it was errored, it was not - * being aborted, so there is nothing to do except free - * it. - */ - - spin_lock_irq(&ihost->scic_lock); - /* Remove the request from the remote device's list - * of pending requests. - */ - list_del_init(&request->dev_node); - isci_free_tag(ihost, request->io_tag); - spin_unlock_irq(&ihost->scic_lock); - } - } /* the coalesence timeout doubles at each encoding step, so * update it based on the ilog2 value of the outstanding requests @@ -2345,7 +2306,6 @@ static int sci_controller_dma_alloc(struct isci_host *ihost) ireq->tc = &ihost->task_context_table[i]; ireq->owning_controller = ihost; - spin_lock_init(&ireq->state_lock); ireq->request_daddr = dma; ireq->isci_host = ihost; ihost->reqs[i] = ireq; @@ -2697,6 +2657,10 @@ enum sci_status sci_controller_terminate_request(struct isci_host *ihost, return SCI_FAILURE_INVALID_STATE; } status = sci_io_request_terminate(ireq); + + dev_dbg(&ihost->pdev->dev, "%s: status=%d; ireq=%p; flags=%lx\n", + __func__, status, ireq, ireq->flags); + if ((status == SCI_SUCCESS) && !test_bit(IREQ_PENDING_ABORT, &ireq->flags) && !test_and_set_bit(IREQ_TC_ABORT_POSTED, &ireq->flags)) { @@ -2739,6 +2703,8 @@ enum sci_status sci_controller_complete_io(struct isci_host *ihost, index = ISCI_TAG_TCI(ireq->io_tag); clear_bit(IREQ_ACTIVE, &ireq->flags); + if (test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) + wake_up_all(&ihost->eventq); return SCI_SUCCESS; default: dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 7272a0a..eaa13c0 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -205,7 +205,6 @@ struct isci_host { wait_queue_head_t eventq; struct tasklet_struct completion_tasklet; struct list_head requests_to_complete; - struct list_head requests_to_errorback; spinlock_t scic_lock; struct isci_request *reqs[SCI_MAX_IO_REQUESTS]; struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES]; diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 9e1c83e..39f1270 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -556,7 +556,6 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) } INIT_LIST_HEAD(&ihost->requests_to_complete); - INIT_LIST_HEAD(&ihost->requests_to_errorback); for (i = 0; i < SCI_MAX_PORTS; i++) { struct isci_port *iport = &ihost->ports[i]; diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 3048e02..c47304c 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -81,49 +81,6 @@ static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev } /** - * isci_remote_device_not_ready() - This function is called by the ihost when - * the remote device is not ready. We mark the isci device as ready (not - * "ready_for_io") and signal the waiting proccess. - * @isci_host: This parameter specifies the isci host object. - * @isci_device: This parameter specifies the remote device - * - * sci_lock is held on entrance to this function. - */ -static void isci_remote_device_not_ready(struct isci_host *ihost, - struct isci_remote_device *idev, u32 reason) -{ - struct isci_request *ireq; - - dev_dbg(&ihost->pdev->dev, - "%s: isci_device = %p\n", __func__, idev); - - switch (reason) { - case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED: - set_bit(IDEV_GONE, &idev->flags); - break; - case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED: - set_bit(IDEV_IO_NCQERROR, &idev->flags); - - /* Suspend the remote device so the I/O can be terminated. */ - sci_remote_device_suspend(idev); - - /* Kill all outstanding requests for the device. */ - list_for_each_entry(ireq, &idev->reqs_in_process, dev_node) { - - dev_dbg(&ihost->pdev->dev, - "%s: isci_device = %p request = %p\n", - __func__, idev, ireq); - - sci_controller_terminate_request(ihost, idev, ireq); - } - /* Fall through into the default case... */ - default: - clear_bit(IDEV_IO_READY, &idev->flags); - break; - } -} - -/** * isci_remote_device_ready() - This function is called by the ihost when the * remote device is ready. We mark the isci device as ready and signal the * waiting proccess. @@ -142,49 +99,121 @@ static void isci_remote_device_ready(struct isci_host *ihost, struct isci_remote wake_up(&ihost->eventq); } -static int isci_remote_device_suspendcheck(struct isci_remote_device *idev) +static enum sci_status sci_remote_device_terminate_req( + struct isci_host *ihost, + struct isci_remote_device *idev, + int check_abort, + struct isci_request *ireq) +{ + dev_dbg(&ihost->pdev->dev, + "%s: idev=%p; flags=%lx; req=%p; req target=%p\n", + __func__, idev, idev->flags, ireq, ireq->target_device); + + if (!test_bit(IREQ_ACTIVE, &ireq->flags) || + (ireq->target_device != idev) || + (check_abort && !test_bit(IREQ_PENDING_ABORT, &ireq->flags))) + return SCI_SUCCESS; + + set_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags); + + return sci_controller_terminate_request(ihost, idev, ireq); +} + +static enum sci_status sci_remote_device_terminate_reqs_checkabort( + struct isci_remote_device *idev, + int chk) { - return test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) - || !test_bit(IDEV_ALLOCATED, &idev->flags); + struct isci_host *ihost = idev->owning_port->owning_controller; + enum sci_status status = SCI_SUCCESS; + u32 i; + + for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) { + struct isci_request *ireq = ihost->reqs[i]; + enum sci_status s; + + s = sci_remote_device_terminate_req(ihost, idev, chk, ireq); + if (s != SCI_SUCCESS) + status = s; + } + return status; } -enum sci_status isci_remote_device_suspend( +enum sci_status isci_remote_device_terminate_requests( struct isci_host *ihost, - struct isci_remote_device *idev) + struct isci_remote_device *idev, + struct isci_request *ireq) { - enum sci_status status; + enum sci_status status = SCI_SUCCESS; unsigned long flags; spin_lock_irqsave(&ihost->scic_lock, flags); - if (isci_get_device(idev->domain_dev) == NULL) { + if (isci_get_device(idev) == NULL) { + dev_dbg(&ihost->pdev->dev, "%s: failed isci_get_device(idev=%p)\n", + __func__, idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); status = SCI_FAILURE; } else { - status = sci_remote_device_suspend(idev); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - if (status == SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: idev=%p, about to wait\n", - __func__, idev); - wait_event(ihost->eventq, - isci_remote_device_suspendcheck(idev)); - status = test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) - ? SCI_SUCCESS : SCI_FAILURE; - dev_dbg(&ihost->pdev->dev, - "%s: idev=%p, wait done, device is %s\n", - __func__, idev, - test_bit(IDEV_TXRX_SUSPENDED, &idev->flags) - ? "" : ""); + dev_dbg(&ihost->pdev->dev, + "%s: idev=%p, ireq=%p; started_request_count=%d, " + "about to wait\n", + __func__, idev, ireq, idev->started_request_count); + if (ireq) { + /* Terminate a specific TC. */ + sci_remote_device_terminate_req(ihost, idev, 0, ireq); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + wait_event(ihost->eventq, !test_bit(IREQ_ACTIVE, + &ireq->flags)); - } else - dev_dbg(scirdev_to_dev(idev), - "%s: sci_remote_device_suspend failed, " - "status = %d\n", __func__, status); + } else { + /* Terminate all TCs. */ + sci_remote_device_terminate_requests(idev); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + wait_event(ihost->eventq, + idev->started_request_count == 0); + } + dev_dbg(&ihost->pdev->dev, "%s: idev=%p, wait done\n", + __func__, idev); isci_put_device(idev); } return status; } +/** +* isci_remote_device_not_ready() - This function is called by the ihost when +* the remote device is not ready. We mark the isci device as ready (not +* "ready_for_io") and signal the waiting proccess. +* @isci_host: This parameter specifies the isci host object. +* @isci_device: This parameter specifies the remote device +* +* sci_lock is held on entrance to this function. +*/ +static void isci_remote_device_not_ready(struct isci_host *ihost, + struct isci_remote_device *idev, + u32 reason) +{ + dev_dbg(&ihost->pdev->dev, + "%s: isci_device = %p\n", __func__, idev); + + switch (reason) { + case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED: + set_bit(IDEV_GONE, &idev->flags); + break; + case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED: + set_bit(IDEV_IO_NCQERROR, &idev->flags); + + /* Suspend the remote device so the I/O can be terminated. */ + sci_remote_device_suspend(idev); + + /* Kill all outstanding requests for the device. */ + sci_remote_device_terminate_requests(idev); + + /* Fall through into the default case... */ + default: + clear_bit(IDEV_IO_READY, &idev->flags); + break; + } +} + /* called once the remote node context is ready to be freed. * The remote device can now report that its stop operation is complete. none */ @@ -196,36 +225,10 @@ static void rnc_destruct_done(void *_dev) sci_change_state(&idev->sm, SCI_DEV_STOPPED); } -static enum sci_status sci_remote_device_terminate_requests_checkabort( - struct isci_remote_device *idev, - int check_abort_pending) -{ - struct isci_host *ihost = idev->owning_port->owning_controller; - enum sci_status status = SCI_SUCCESS; - u32 i; - - for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) { - struct isci_request *ireq = ihost->reqs[i]; - enum sci_status s; - - if (!test_bit(IREQ_ACTIVE, &ireq->flags) || - (ireq->target_device != idev) || - (check_abort_pending && !test_bit(IREQ_PENDING_ABORT, - &ireq->flags))) - continue; - - s = sci_controller_terminate_request(ihost, idev, ireq); - if (s != SCI_SUCCESS) - status = s; - } - - return status; -} - enum sci_status sci_remote_device_terminate_requests( struct isci_remote_device *idev) { - return sci_remote_device_terminate_requests_checkabort(idev, 0); + return sci_remote_device_terminate_reqs_checkabort(idev, 0); } enum sci_status sci_remote_device_stop(struct isci_remote_device *idev, @@ -771,10 +774,6 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, if (status != SCI_SUCCESS) return status; - status = sci_remote_node_context_start_task(&idev->rnc, ireq); - if (status != SCI_SUCCESS) - goto out; - status = sci_request_start(ireq); if (status != SCI_SUCCESS) goto out; @@ -796,8 +795,9 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, sci_remote_node_context_suspend( &idev->rnc, SCI_SOFTWARE_SUSPENSION, SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); - sci_remote_node_context_resume( - &idev->rnc, sci_remote_device_continue_request, idev); + + status = sci_remote_node_context_start_task(&idev->rnc, ireq, + sci_remote_device_continue_request, idev); out: sci_remote_device_start_request(idev, ireq, status); @@ -811,7 +811,9 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, if (status != SCI_SUCCESS) return status; - status = sci_remote_node_context_start_task(&idev->rnc, ireq); + /* Resume the RNC as needed: */ + status = sci_remote_node_context_start_task(&idev->rnc, ireq, + NULL, NULL); if (status != SCI_SUCCESS) break; @@ -1322,20 +1324,6 @@ static enum sci_status isci_remote_device_construct(struct isci_port *iport, return status; } -void isci_remote_device_nuke_requests(struct isci_host *ihost, struct isci_remote_device *idev) -{ - DECLARE_COMPLETION_ONSTACK(aborted_task_completion); - - dev_dbg(&ihost->pdev->dev, - "%s: idev = %p\n", __func__, idev); - - /* Cleanup all requests pending for this device. */ - isci_terminate_pending_requests(ihost, idev); - - dev_dbg(&ihost->pdev->dev, - "%s: idev = %p, done\n", __func__, idev); -} - /** * This function builds the isci_remote_device when a libsas dev_found message * is received. @@ -1495,32 +1483,28 @@ int isci_remote_device_found(struct domain_device *dev) return status == SCI_SUCCESS ? 0 : -ENODEV; } -enum sci_status isci_remote_device_reset( +enum sci_status isci_remote_device_suspend_terminate( struct isci_host *ihost, - struct isci_remote_device *idev) + struct isci_remote_device *idev, + struct isci_request *ireq) { unsigned long flags; enum sci_status status; - /* Put the device into a reset state so the suspension will not - * automatically resume. - */ + /* Put the device into suspension. */ spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_reset(idev); + sci_remote_device_suspend(idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); - if (status != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: sci_remote_device_reset(%p) returned %d!\n", - __func__, idev, status); - return status; - } - /* Wait for the device suspend. */ - status = isci_remote_device_suspend(ihost, idev); - if (status != SCI_SUCCESS) { + + /* Terminate and wait for the completions. */ + status = isci_remote_device_terminate_requests(ihost, idev, ireq); + if (status != SCI_SUCCESS) dev_dbg(&ihost->pdev->dev, - "%s: isci_remote_device_suspend(%p) returned %d!\n", + "%s: isci_remote_device_terminate_requests(%p) " + "returned %d!\n", __func__, idev, status); - } + + /* NOTE: RNC resumption is left to the caller! */ return status; } @@ -1533,7 +1517,7 @@ int isci_remote_device_is_safe_to_abort( enum sci_status sci_remote_device_abort_requests_pending_abort( struct isci_remote_device *idev) { - return sci_remote_device_terminate_requests_checkabort(idev, 1); + return sci_remote_device_terminate_reqs_checkabort(idev, 1); } enum sci_status isci_remote_device_reset_complete( @@ -1545,7 +1529,6 @@ enum sci_status isci_remote_device_reset_complete( spin_lock_irqsave(&ihost->scic_lock, flags); status = sci_remote_device_reset_complete(idev); - sci_remote_device_resume(idev, NULL, NULL); spin_unlock_irqrestore(&ihost->scic_lock, flags); return status; diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index a6a376e..da43698 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -85,7 +85,6 @@ struct isci_remote_device { #define IDEV_GONE 3 #define IDEV_IO_READY 4 #define IDEV_IO_NCQERROR 5 - #define IDEV_TXRX_SUSPENDED 6 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -107,10 +106,8 @@ struct isci_remote_device { /* device reference routines must be called under sci_lock */ static inline struct isci_remote_device *isci_get_device( - struct domain_device *dev) + struct isci_remote_device *idev) { - struct isci_remote_device *idev = dev->lldd_dev; - if (idev) kref_get(&idev->kref); return idev; @@ -378,4 +375,14 @@ enum sci_status isci_remote_device_reset( enum sci_status isci_remote_device_reset_complete( struct isci_host *ihost, struct isci_remote_device *idev); + +enum sci_status isci_remote_device_suspend_terminate( + struct isci_host *ihost, + struct isci_remote_device *idev, + struct isci_request *ireq); + +enum sci_status isci_remote_device_terminate_requests( + struct isci_host *ihost, + struct isci_remote_device *idev, + struct isci_request *ireq); #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 7a8347e..feeca17 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -317,8 +317,6 @@ static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_ struct isci_remote_device *idev = rnc_to_dev(rnc); struct isci_host *ihost = idev->owning_port->owning_controller; - set_bit(IDEV_TXRX_SUSPENDED, &idev->flags); - /* Terminate outstanding requests pending abort. */ sci_remote_device_abort_requests_pending_abort(idev); @@ -326,16 +324,6 @@ static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_ sci_remote_node_context_continue_state_transitions(rnc); } -static void sci_remote_node_context_tx_rx_suspended_state_exit( - struct sci_base_state_machine *sm) -{ - struct sci_remote_node_context *rnc - = container_of(sm, typeof(*rnc), sm); - struct isci_remote_device *idev = rnc_to_dev(rnc); - - clear_bit(IDEV_TXRX_SUSPENDED, &idev->flags); -} - static void sci_remote_node_context_await_suspend_state_exit( struct sci_base_state_machine *sm) { @@ -366,8 +354,6 @@ static const struct sci_base_state sci_remote_node_context_state_table[] = { }, [SCI_RNC_TX_RX_SUSPENDED] = { .enter_state = sci_remote_node_context_tx_rx_suspended_state_enter, - .exit_state - = sci_remote_node_context_tx_rx_suspended_state_exit, }, [SCI_RNC_AWAIT_SUSPENSION] = { .exit_state = sci_remote_node_context_await_suspend_state_exit, @@ -671,8 +657,11 @@ enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context } } -enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc, - struct isci_request *ireq) +enum sci_status sci_remote_node_context_start_task( + struct sci_remote_node_context *sci_rnc, + struct isci_request *ireq, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p) { enum scis_sds_remote_node_context_states state; @@ -684,7 +673,7 @@ enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_contex return SCI_SUCCESS; case SCI_RNC_TX_SUSPENDED: case SCI_RNC_TX_RX_SUSPENDED: - sci_remote_node_context_resume(sci_rnc, NULL, NULL); + sci_remote_node_context_resume(sci_rnc, cb_fn, cb_p); return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 5ddf88b..2870af1 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -211,7 +211,9 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s scics_sds_remote_node_context_callback cb_fn, void *cb_p); enum sci_status sci_remote_node_context_start_task(struct sci_remote_node_context *sci_rnc, - struct isci_request *ireq); + struct isci_request *ireq, + scics_sds_remote_node_context_callback cb_fn, + void *cb_p); enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context *sci_rnc, struct isci_request *ireq); int sci_remote_node_context_is_safe_to_abort( diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 1f314d0..f4e80f3 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2491,9 +2491,6 @@ static void isci_request_process_response_iu( * @request: This parameter is the completed isci_request object. * @response_ptr: This parameter specifies the service response for the I/O. * @status_ptr: This parameter specifies the exec status for the I/O. - * @complete_to_host_ptr: This parameter specifies the action to be taken by - * the LLDD with respect to completing this request or forcing an abort - * condition on the I/O. * @open_rej_reason: This parameter specifies the encoded reason for the * abandon-class reject. * @@ -2504,14 +2501,12 @@ static void isci_request_set_open_reject_status( struct sas_task *task, enum service_response *response_ptr, enum exec_status *status_ptr, - enum isci_completion_selection *complete_to_host_ptr, enum sas_open_rej_reason open_rej_reason) { /* Task in the target is done. */ set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); *response_ptr = SAS_TASK_UNDELIVERED; *status_ptr = SAS_OPEN_REJECT; - *complete_to_host_ptr = isci_perform_normal_io_completion; task->task_status.open_rej_reason = open_rej_reason; } @@ -2521,9 +2516,6 @@ static void isci_request_set_open_reject_status( * @request: This parameter is the completed isci_request object. * @response_ptr: This parameter specifies the service response for the I/O. * @status_ptr: This parameter specifies the exec status for the I/O. - * @complete_to_host_ptr: This parameter specifies the action to be taken by - * the LLDD with respect to completing this request or forcing an abort - * condition on the I/O. * * none. */ @@ -2532,8 +2524,7 @@ static void isci_request_handle_controller_specific_errors( struct isci_request *request, struct sas_task *task, enum service_response *response_ptr, - enum exec_status *status_ptr, - enum isci_completion_selection *complete_to_host_ptr) + enum exec_status *status_ptr) { unsigned int cstatus; @@ -2574,9 +2565,6 @@ static void isci_request_handle_controller_specific_errors( *status_ptr = SAS_ABORTED_TASK; set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - *complete_to_host_ptr = - isci_perform_normal_io_completion; } else { /* Task in the target is not done. */ *response_ptr = SAS_TASK_UNDELIVERED; @@ -2587,9 +2575,6 @@ static void isci_request_handle_controller_specific_errors( *status_ptr = SAM_STAT_TASK_ABORTED; clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - *complete_to_host_ptr = - isci_perform_error_io_completion; } break; @@ -2618,8 +2603,6 @@ static void isci_request_handle_controller_specific_errors( *status_ptr = SAS_ABORTED_TASK; set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - *complete_to_host_ptr = isci_perform_normal_io_completion; break; @@ -2630,7 +2613,7 @@ static void isci_request_handle_controller_specific_errors( isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_WRONG_DEST); + SAS_OREJ_WRONG_DEST); break; case SCU_TASK_OPEN_REJECT_ZONE_VIOLATION: @@ -2640,56 +2623,56 @@ static void isci_request_handle_controller_specific_errors( */ isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_RESV_AB0); + SAS_OREJ_RESV_AB0); break; case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_1: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_RESV_AB1); + SAS_OREJ_RESV_AB1); break; case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_2: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_RESV_AB2); + SAS_OREJ_RESV_AB2); break; case SCU_TASK_OPEN_REJECT_RESERVED_ABANDON_3: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_RESV_AB3); + SAS_OREJ_RESV_AB3); break; case SCU_TASK_OPEN_REJECT_BAD_DESTINATION: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_BAD_DEST); + SAS_OREJ_BAD_DEST); break; case SCU_TASK_OPEN_REJECT_STP_RESOURCES_BUSY: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_STP_NORES); + SAS_OREJ_STP_NORES); break; case SCU_TASK_OPEN_REJECT_PROTOCOL_NOT_SUPPORTED: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_EPROTO); + SAS_OREJ_EPROTO); break; case SCU_TASK_OPEN_REJECT_CONNECTION_RATE_NOT_SUPPORTED: isci_request_set_open_reject_status( request, task, response_ptr, status_ptr, - complete_to_host_ptr, SAS_OREJ_CONN_RATE); + SAS_OREJ_CONN_RATE); break; case SCU_TASK_DONE_LL_R_ERR: @@ -2721,95 +2704,12 @@ static void isci_request_handle_controller_specific_errors( *response_ptr = SAS_TASK_UNDELIVERED; *status_ptr = SAM_STAT_TASK_ABORTED; - if (task->task_proto == SAS_PROTOCOL_SMP) { + if (task->task_proto == SAS_PROTOCOL_SMP) set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - *complete_to_host_ptr = isci_perform_normal_io_completion; - } else { + else clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - *complete_to_host_ptr = isci_perform_error_io_completion; - } - break; - } -} - -/** - * isci_task_save_for_upper_layer_completion() - This function saves the - * request for later completion to the upper layer driver. - * @host: This parameter is a pointer to the host on which the the request - * should be queued (either as an error or success). - * @request: This parameter is the completed request. - * @response: This parameter is the response code for the completed task. - * @status: This parameter is the status code for the completed task. - * - * none. - */ -static void isci_task_save_for_upper_layer_completion( - struct isci_host *host, - struct isci_request *request, - enum service_response response, - enum exec_status status, - enum isci_completion_selection task_notification_selection) -{ - struct sas_task *task = isci_request_access_task(request); - - task_notification_selection - = isci_task_set_completion_status(task, response, status, - task_notification_selection); - - /* Tasks aborted specifically by a call to the lldd_abort_task - * function should not be completed to the host in the regular path. - */ - switch (task_notification_selection) { - - case isci_perform_normal_io_completion: - /* Normal notification (task_done) */ - - /* Add to the completed list. */ - list_add(&request->completed_node, - &host->requests_to_complete); - - /* Take the request off the device's pending request list. */ - list_del_init(&request->dev_node); - break; - - case isci_perform_aborted_io_completion: - /* No notification to libsas because this request is - * already in the abort path. - */ - /* Wake up whatever process was waiting for this - * request to complete. - */ - WARN_ON(request->io_request_completion == NULL); - - if (request->io_request_completion != NULL) { - - /* Signal whoever is waiting that this - * request is complete. - */ - complete(request->io_request_completion); - } - break; - - case isci_perform_error_io_completion: - /* Use sas_task_abort */ - /* Add to the aborted list. */ - list_add(&request->completed_node, - &host->requests_to_errorback); - break; - - default: - /* Add to the error to libsas list. */ - list_add(&request->completed_node, - &host->requests_to_errorback); break; } - dev_dbg(&host->pdev->dev, - "%s: %d - task = %p, response=%d (%d), status=%d (%d)\n", - __func__, task_notification_selection, task, - (task) ? task->task_status.resp : 0, response, - (task) ? task->task_status.stat : 0, status); } static void isci_process_stp_response(struct sas_task *task, struct dev_to_host_fis *fis) @@ -2844,9 +2744,6 @@ static void isci_request_io_request_complete(struct isci_host *ihost, struct isci_remote_device *idev = request->target_device; enum service_response response = SAS_TASK_UNDELIVERED; enum exec_status status = SAS_ABORTED_TASK; - enum isci_request_status request_status; - enum isci_completion_selection complete_to_host - = isci_perform_normal_io_completion; dev_dbg(&ihost->pdev->dev, "%s: request = %p, task = %p,\n" @@ -2857,282 +2754,158 @@ static void isci_request_io_request_complete(struct isci_host *ihost, task->data_dir, completion_status); - spin_lock(&request->state_lock); - request_status = request->status; - - /* Decode the request status. Note that if the request has been - * aborted by a task management function, we don't care - * what the status is. - */ - switch (request_status) { - - case aborted: - /* "aborted" indicates that the request was aborted by a task - * management function, since once a task management request is - * perfomed by the device, the request only completes because - * of the subsequent driver terminate. - * - * Aborted also means an external thread is explicitly managing - * this request, so that we do not complete it up the stack. - * - * The target is still there (since the TMF was successful). - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - response = SAS_TASK_COMPLETE; + /* The request is done from an SCU HW perspective. */ - /* See if the device has been/is being stopped. Note - * that we ignore the quiesce state, since we are - * concerned about the actual device state. - */ - if (!idev) - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_ABORTED_TASK; + /* This is an active request being completed from the core. */ + switch (completion_status) { - complete_to_host = isci_perform_aborted_io_completion; - /* This was an aborted request. */ + case SCI_IO_FAILURE_RESPONSE_VALID: + dev_dbg(&ihost->pdev->dev, + "%s: SCI_IO_FAILURE_RESPONSE_VALID (%p/%p)\n", + __func__, request, task); - spin_unlock(&request->state_lock); - break; + if (sas_protocol_ata(task->task_proto)) { + isci_process_stp_response(task, &request->stp.rsp); + } else if (SAS_PROTOCOL_SSP == task->task_proto) { - case aborting: - /* aborting means that the task management function tried and - * failed to abort the request. We need to note the request - * as SAS_TASK_UNDELIVERED, so that the scsi mid layer marks the - * target as down. - * - * Aborting also means an external thread is explicitly managing - * this request, so that we do not complete it up the stack. - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - response = SAS_TASK_UNDELIVERED; + /* crack the iu response buffer. */ + resp_iu = &request->ssp.rsp; + isci_request_process_response_iu(task, resp_iu, + &ihost->pdev->dev); - if (!idev) - /* The device has been /is being stopped. Note that - * we ignore the quiesce state, since we are - * concerned about the actual device state. - */ - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_PHY_DOWN; + } else if (SAS_PROTOCOL_SMP == task->task_proto) { - complete_to_host = isci_perform_aborted_io_completion; + dev_err(&ihost->pdev->dev, + "%s: SCI_IO_FAILURE_RESPONSE_VALID: " + "SAS_PROTOCOL_SMP protocol\n", + __func__); - /* This was an aborted request. */ + } else + dev_err(&ihost->pdev->dev, + "%s: unknown protocol\n", __func__); - spin_unlock(&request->state_lock); + /* use the task status set in the task struct by the + * isci_request_process_response_iu call. + */ + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); + response = task->task_status.resp; + status = task->task_status.stat; break; - case terminating: + case SCI_IO_SUCCESS: + case SCI_IO_SUCCESS_IO_DONE_EARLY: - /* This was an terminated request. This happens when - * the I/O is being terminated because of an action on - * the device (reset, tear down, etc.), and the I/O needs - * to be completed up the stack. - */ + response = SAS_TASK_COMPLETE; + status = SAM_STAT_GOOD; set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - response = SAS_TASK_UNDELIVERED; - /* See if the device has been/is being stopped. Note - * that we ignore the quiesce state, since we are - * concerned about the actual device state. - */ - if (!idev) - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_ABORTED_TASK; - - complete_to_host = isci_perform_aborted_io_completion; - - /* This was a terminated request. */ - - spin_unlock(&request->state_lock); - break; + if (completion_status == SCI_IO_SUCCESS_IO_DONE_EARLY) { - case dead: - /* This was a terminated request that timed-out during the - * termination process. There is no task to complete to - * libsas. - */ - complete_to_host = isci_perform_normal_io_completion; - spin_unlock(&request->state_lock); - break; - - default: - - /* The request is done from an SCU HW perspective. */ - request->status = completed; + /* This was an SSP / STP / SATA transfer. + * There is a possibility that less data than + * the maximum was transferred. + */ + u32 transferred_length = sci_req_tx_bytes(request); - spin_unlock(&request->state_lock); + task->task_status.residual + = task->total_xfer_len - transferred_length; - /* This is an active request being completed from the core. */ - switch (completion_status) { + /* If there were residual bytes, call this an + * underrun. + */ + if (task->task_status.residual != 0) + status = SAS_DATA_UNDERRUN; - case SCI_IO_FAILURE_RESPONSE_VALID: dev_dbg(&ihost->pdev->dev, - "%s: SCI_IO_FAILURE_RESPONSE_VALID (%p/%p)\n", - __func__, - request, - task); - - if (sas_protocol_ata(task->task_proto)) { - isci_process_stp_response(task, &request->stp.rsp); - } else if (SAS_PROTOCOL_SSP == task->task_proto) { - - /* crack the iu response buffer. */ - resp_iu = &request->ssp.rsp; - isci_request_process_response_iu(task, resp_iu, - &ihost->pdev->dev); - - } else if (SAS_PROTOCOL_SMP == task->task_proto) { + "%s: SCI_IO_SUCCESS_IO_DONE_EARLY %d\n", + __func__, status); - dev_err(&ihost->pdev->dev, - "%s: SCI_IO_FAILURE_RESPONSE_VALID: " - "SAS_PROTOCOL_SMP protocol\n", - __func__); - - } else - dev_err(&ihost->pdev->dev, - "%s: unknown protocol\n", __func__); - - /* use the task status set in the task struct by the - * isci_request_process_response_iu call. - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - response = task->task_status.resp; - status = task->task_status.stat; - break; - - case SCI_IO_SUCCESS: - case SCI_IO_SUCCESS_IO_DONE_EARLY: - - response = SAS_TASK_COMPLETE; - status = SAM_STAT_GOOD; - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - - if (completion_status == SCI_IO_SUCCESS_IO_DONE_EARLY) { - - /* This was an SSP / STP / SATA transfer. - * There is a possibility that less data than - * the maximum was transferred. - */ - u32 transferred_length = sci_req_tx_bytes(request); - - task->task_status.residual - = task->total_xfer_len - transferred_length; + } else + dev_dbg(&ihost->pdev->dev, "%s: SCI_IO_SUCCESS\n", + __func__); + break; - /* If there were residual bytes, call this an - * underrun. - */ - if (task->task_status.residual != 0) - status = SAS_DATA_UNDERRUN; + case SCI_IO_FAILURE_TERMINATED: - dev_dbg(&ihost->pdev->dev, - "%s: SCI_IO_SUCCESS_IO_DONE_EARLY %d\n", - __func__, - status); + dev_dbg(&ihost->pdev->dev, + "%s: SCI_IO_FAILURE_TERMINATED (%p/%p)\n", + __func__, request, task); - } else - dev_dbg(&ihost->pdev->dev, - "%s: SCI_IO_SUCCESS\n", - __func__); + /* The request was terminated explicitly. */ + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); + response = SAS_TASK_UNDELIVERED; - break; + /* See if the device has been/is being stopped. Note + * that we ignore the quiesce state, since we are + * concerned about the actual device state. + */ + if (!idev) + status = SAS_DEVICE_UNKNOWN; + else + status = SAS_ABORTED_TASK; + break; - case SCI_IO_FAILURE_TERMINATED: - dev_dbg(&ihost->pdev->dev, - "%s: SCI_IO_FAILURE_TERMINATED (%p/%p)\n", - __func__, - request, - task); + case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR: - /* The request was terminated explicitly. No handling - * is needed in the SCSI error handler path. - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - response = SAS_TASK_UNDELIVERED; + isci_request_handle_controller_specific_errors(idev, request, + task, &response, + &status); + break; - /* See if the device has been/is being stopped. Note - * that we ignore the quiesce state, since we are - * concerned about the actual device state. - */ - if (!idev) - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_ABORTED_TASK; + case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED: + /* This is a special case, in that the I/O completion + * is telling us that the device needs a reset. + * In order for the device reset condition to be + * noticed, the I/O has to be handled in the error + * handler. Set the reset flag and cause the + * SCSI error thread to be scheduled. + */ + spin_lock_irqsave(&task->task_state_lock, task_flags); + task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; + spin_unlock_irqrestore(&task->task_state_lock, task_flags); - complete_to_host = isci_perform_normal_io_completion; - break; + /* Fail the I/O. */ + response = SAS_TASK_UNDELIVERED; + status = SAM_STAT_TASK_ABORTED; - case SCI_FAILURE_CONTROLLER_SPECIFIC_IO_ERR: + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); + break; - isci_request_handle_controller_specific_errors( - idev, request, task, &response, &status, - &complete_to_host); + case SCI_FAILURE_RETRY_REQUIRED: - break; + /* Fail the I/O so it can be retried. */ + response = SAS_TASK_UNDELIVERED; + if (!idev) + status = SAS_DEVICE_UNKNOWN; + else + status = SAS_ABORTED_TASK; - case SCI_IO_FAILURE_REMOTE_DEVICE_RESET_REQUIRED: - /* This is a special case, in that the I/O completion - * is telling us that the device needs a reset. - * In order for the device reset condition to be - * noticed, the I/O has to be handled in the error - * handler. Set the reset flag and cause the - * SCSI error thread to be scheduled. - */ - spin_lock_irqsave(&task->task_state_lock, task_flags); - task->task_state_flags |= SAS_TASK_NEED_DEV_RESET; - spin_unlock_irqrestore(&task->task_state_lock, task_flags); + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); + break; - /* Fail the I/O. */ - response = SAS_TASK_UNDELIVERED; - status = SAM_STAT_TASK_ABORTED; - complete_to_host = isci_perform_error_io_completion; - clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - break; + default: + /* Catch any otherwise unhandled error codes here. */ + dev_dbg(&ihost->pdev->dev, + "%s: invalid completion code: 0x%x - " + "isci_request = %p\n", + __func__, completion_status, request); - case SCI_FAILURE_RETRY_REQUIRED: + response = SAS_TASK_UNDELIVERED; - /* Fail the I/O so it can be retried. */ - response = SAS_TASK_UNDELIVERED; - if (!idev) - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_ABORTED_TASK; + /* See if the device has been/is being stopped. Note + * that we ignore the quiesce state, since we are + * concerned about the actual device state. + */ + if (!idev) + status = SAS_DEVICE_UNKNOWN; + else + status = SAS_ABORTED_TASK; - complete_to_host = isci_perform_normal_io_completion; + if (SAS_PROTOCOL_SMP == task->task_proto) set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - break; - - - default: - /* Catch any otherwise unhandled error codes here. */ - dev_dbg(&ihost->pdev->dev, - "%s: invalid completion code: 0x%x - " - "isci_request = %p\n", - __func__, completion_status, request); - - response = SAS_TASK_UNDELIVERED; - - /* See if the device has been/is being stopped. Note - * that we ignore the quiesce state, since we are - * concerned about the actual device state. - */ - if (!idev) - status = SAS_DEVICE_UNKNOWN; - else - status = SAS_ABORTED_TASK; - - if (SAS_PROTOCOL_SMP == task->task_proto) { - set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - complete_to_host = isci_perform_normal_io_completion; - } else { - clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); - complete_to_host = isci_perform_error_io_completion; - } - break; - } + else + clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); break; } @@ -3167,10 +2940,24 @@ static void isci_request_io_request_complete(struct isci_host *ihost, break; } - /* Put the completed request on the correct list */ - isci_task_save_for_upper_layer_completion(ihost, request, response, - status, complete_to_host - ); + spin_lock_irqsave(&task->task_state_lock, task_flags); + + task->task_status.resp = response; + task->task_status.stat = status; + + if (test_bit(IREQ_COMPLETE_IN_TARGET, &request->flags)) { + /* Normal notification (task_done) */ + task->task_state_flags |= SAS_TASK_STATE_DONE; + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + } + spin_unlock_irqrestore(&task->task_state_lock, task_flags); + + /* Add to the completed list. */ + list_add(&request->completed_node, &ihost->requests_to_complete); + + /* Take the request off the device's pending request list. */ + list_del_init(&request->dev_node); /* complete the io request to the core. */ sci_controller_complete_io(ihost, request->target_device, request); @@ -3626,7 +3413,6 @@ static struct isci_request *isci_request_from_tag(struct isci_host *ihost, u16 t ireq->num_sg_entries = 0; INIT_LIST_HEAD(&ireq->completed_node); INIT_LIST_HEAD(&ireq->dev_node); - isci_request_change_state(ireq, allocated); return ireq; } @@ -3721,15 +3507,12 @@ int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *ide */ list_add(&ireq->dev_node, &idev->reqs_in_process); - if (status == SCI_SUCCESS) { - isci_request_change_state(ireq, started); - } else { + if (status != SCI_SUCCESS) { /* The request did not really start in the * hardware, so clear the request handle * here so no terminations will be done. */ set_bit(IREQ_TERMINATED, &ireq->flags); - isci_request_change_state(ireq, completed); } spin_unlock_irqrestore(&ihost->scic_lock, flags); diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 8d55f78..f3116a5 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -61,23 +61,6 @@ #include "scu_task_context.h" /** - * struct isci_request_status - This enum defines the possible states of an I/O - * request. - * - * - */ -enum isci_request_status { - unallocated = 0x00, - allocated = 0x01, - started = 0x02, - completed = 0x03, - aborting = 0x04, - aborted = 0x05, - terminating = 0x06, - dead = 0x07 -}; - -/** * isci_stp_request - extra request infrastructure to handle pio/atapi protocol * @pio_len - number of bytes requested at PIO setup * @status - pio setup ending status value to tell us if we need @@ -97,13 +80,13 @@ struct isci_stp_request { }; struct isci_request { - enum isci_request_status status; #define IREQ_COMPLETE_IN_TARGET 0 #define IREQ_TERMINATED 1 #define IREQ_TMF 2 #define IREQ_ACTIVE 3 #define IREQ_PENDING_ABORT 4 /* Set == device was not suspended yet */ #define IREQ_TC_ABORT_POSTED 5 + #define IREQ_ABORT_PATH_ACTIVE 6 unsigned long flags; /* XXX kill ttype and ttype_ptr, allocate full sas_task */ union ttype_ptr_union { @@ -115,7 +98,6 @@ struct isci_request { struct list_head completed_node; /* For use in the reqs_in_process list: */ struct list_head dev_node; - spinlock_t state_lock; dma_addr_t request_daddr; dma_addr_t zero_scatter_daddr; unsigned int num_sg_entries; @@ -304,92 +286,6 @@ sci_io_request_get_dma_addr(struct isci_request *ireq, void *virt_addr) return ireq->request_daddr + (requested_addr - base_addr); } -/** - * isci_request_change_state() - This function sets the status of the request - * object. - * @request: This parameter points to the isci_request object - * @status: This Parameter is the new status of the object - * - */ -static inline enum isci_request_status -isci_request_change_state(struct isci_request *isci_request, - enum isci_request_status status) -{ - enum isci_request_status old_state; - unsigned long flags; - - dev_dbg(&isci_request->isci_host->pdev->dev, - "%s: isci_request = %p, state = 0x%x\n", - __func__, - isci_request, - status); - - BUG_ON(isci_request == NULL); - - spin_lock_irqsave(&isci_request->state_lock, flags); - old_state = isci_request->status; - isci_request->status = status; - spin_unlock_irqrestore(&isci_request->state_lock, flags); - - return old_state; -} - -/** - * isci_request_change_started_to_newstate() - This function sets the status of - * the request object. - * @request: This parameter points to the isci_request object - * @status: This Parameter is the new status of the object - * - * state previous to any change. - */ -static inline enum isci_request_status -isci_request_change_started_to_newstate(struct isci_request *isci_request, - struct completion *completion_ptr, - enum isci_request_status newstate) -{ - enum isci_request_status old_state; - unsigned long flags; - - spin_lock_irqsave(&isci_request->state_lock, flags); - - old_state = isci_request->status; - - if (old_state == started || old_state == aborting) { - BUG_ON(isci_request->io_request_completion != NULL); - - isci_request->io_request_completion = completion_ptr; - isci_request->status = newstate; - } - - spin_unlock_irqrestore(&isci_request->state_lock, flags); - - dev_dbg(&isci_request->isci_host->pdev->dev, - "%s: isci_request = %p, old_state = 0x%x\n", - __func__, - isci_request, - old_state); - - return old_state; -} - -/** - * isci_request_change_started_to_aborted() - This function sets the status of - * the request object. - * @request: This parameter points to the isci_request object - * @completion_ptr: This parameter is saved as the kernel completion structure - * signalled when the old request completes. - * - * state previous to any change. - */ -static inline enum isci_request_status -isci_request_change_started_to_aborted(struct isci_request *isci_request, - struct completion *completion_ptr) -{ - return isci_request_change_started_to_newstate(isci_request, - completion_ptr, - aborted); -} - #define isci_request_access_task(req) ((req)->ttype_ptr.io_task_ptr) #define isci_request_access_tmf(req) ((req)->ttype_ptr.tmf_task_ptr) @@ -399,8 +295,6 @@ struct isci_request *isci_tmf_request_from_tag(struct isci_host *ihost, u16 tag); int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *idev, struct sas_task *task, u16 tag); -void isci_terminate_pending_requests(struct isci_host *ihost, - struct isci_remote_device *idev); enum sci_status sci_task_request_construct(struct isci_host *ihost, struct isci_remote_device *idev, diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 26de06e..29ce881 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -78,54 +78,25 @@ static void isci_task_refuse(struct isci_host *ihost, struct sas_task *task, enum exec_status status) { - enum isci_completion_selection disposition; + unsigned long flags; - disposition = isci_perform_normal_io_completion; - disposition = isci_task_set_completion_status(task, response, status, - disposition); + /* Normal notification (task_done) */ + dev_dbg(&ihost->pdev->dev, "%s: task = %p, response=%d, status=%d\n", + __func__, task, response, status); - /* Tasks aborted specifically by a call to the lldd_abort_task - * function should not be completed to the host in the regular path. - */ - switch (disposition) { - case isci_perform_normal_io_completion: - /* Normal notification (task_done) */ - dev_dbg(&ihost->pdev->dev, - "%s: Normal - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); - - task->lldd_task = NULL; - task->task_done(task); - break; - - case isci_perform_aborted_io_completion: - /* - * No notification because this request is already in the - * abort path. - */ - dev_dbg(&ihost->pdev->dev, - "%s: Aborted - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); - break; + spin_lock_irqsave(&task->task_state_lock, flags); - case isci_perform_error_io_completion: - /* Use sas_task_abort */ - dev_dbg(&ihost->pdev->dev, - "%s: Error - task = %p, response=%d, " - "status=%d\n", - __func__, task, response, status); - sas_task_abort(task); - break; + task->task_status.resp = response; + task->task_status.stat = status; - default: - dev_dbg(&ihost->pdev->dev, - "%s: isci task notification default case!", - __func__); - sas_task_abort(task); - break; - } + /* Normal notification (task_done) */ + task->task_state_flags |= SAS_TASK_STATE_DONE; + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + task->lldd_task = NULL; + spin_unlock_irqrestore(&task->task_state_lock, flags); + + task->task_done(task); } #define for_each_sas_task(num, task) \ @@ -289,60 +260,6 @@ static struct isci_request *isci_task_request_build(struct isci_host *ihost, return ireq; } -/** -* isci_request_mark_zombie() - This function must be called with scic_lock held. -*/ -static void isci_request_mark_zombie(struct isci_host *ihost, struct isci_request *ireq) -{ - struct completion *tmf_completion = NULL; - struct completion *req_completion; - - /* Set the request state to "dead". */ - ireq->status = dead; - - req_completion = ireq->io_request_completion; - ireq->io_request_completion = NULL; - - if (test_bit(IREQ_TMF, &ireq->flags)) { - /* Break links with the TMF request. */ - struct isci_tmf *tmf = isci_request_access_tmf(ireq); - - /* In the case where a task request is dying, - * the thread waiting on the complete will sit and - * timeout unless we wake it now. Since the TMF - * has a default error status, complete it here - * to wake the waiting thread. - */ - if (tmf) { - tmf_completion = tmf->complete; - tmf->complete = NULL; - } - ireq->ttype_ptr.tmf_task_ptr = NULL; - dev_dbg(&ihost->pdev->dev, "%s: tmf_code %d, managed tag %#x\n", - __func__, tmf->tmf_code, tmf->io_tag); - } else { - /* Break links with the sas_task - the callback is done - * elsewhere. - */ - struct sas_task *task = isci_request_access_task(ireq); - - if (task) - task->lldd_task = NULL; - - ireq->ttype_ptr.io_task_ptr = NULL; - } - - dev_warn(&ihost->pdev->dev, "task context unrecoverable (tag: %#x)\n", - ireq->io_tag); - - /* Don't force waiting threads to timeout. */ - if (req_completion) - complete(req_completion); - - if (tmf_completion != NULL) - complete(tmf_completion); -} - static int isci_task_execute_tmf(struct isci_host *ihost, struct isci_remote_device *idev, struct isci_tmf *tmf, unsigned long timeout_ms) @@ -400,15 +317,12 @@ static int isci_task_execute_tmf(struct isci_host *ihost, spin_unlock_irqrestore(&ihost->scic_lock, flags); goto err_tci; } - - if (tmf->cb_state_func != NULL) - tmf->cb_state_func(isci_tmf_started, tmf, tmf->cb_data); - - isci_request_change_state(ireq, started); - /* add the request to the remote device request list. */ list_add(&ireq->dev_node, &idev->reqs_in_process); + /* The RNC must be unsuspended before the TMF can get a response. */ + sci_remote_device_resume(idev, NULL, NULL); + spin_unlock_irqrestore(&ihost->scic_lock, flags); /* Wait for the TMF to complete, or a timeout. */ @@ -419,32 +333,7 @@ static int isci_task_execute_tmf(struct isci_host *ihost, /* The TMF did not complete - this could be because * of an unplug. Terminate the TMF request now. */ - spin_lock_irqsave(&ihost->scic_lock, flags); - - if (tmf->cb_state_func != NULL) - tmf->cb_state_func(isci_tmf_timed_out, tmf, - tmf->cb_data); - - sci_controller_terminate_request(ihost, idev, ireq); - - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - timeleft = wait_for_completion_timeout( - &completion, - msecs_to_jiffies(ISCI_TERMINATION_TIMEOUT_MSEC)); - - if (!timeleft) { - /* Strange condition - the termination of the TMF - * request timed-out. - */ - spin_lock_irqsave(&ihost->scic_lock, flags); - - /* If the TMF status has not changed, kill it. */ - if (tmf->status == SCI_FAILURE_TIMEOUT) - isci_request_mark_zombie(ihost, ireq); - - spin_unlock_irqrestore(&ihost->scic_lock, flags); - } + isci_remote_device_suspend_terminate(ihost, idev, ireq); } isci_print_tmf(ihost, tmf); @@ -476,317 +365,21 @@ static int isci_task_execute_tmf(struct isci_host *ihost, } static void isci_task_build_tmf(struct isci_tmf *tmf, - enum isci_tmf_function_codes code, - void (*tmf_sent_cb)(enum isci_tmf_cb_state, - struct isci_tmf *, - void *), - void *cb_data) + enum isci_tmf_function_codes code) { memset(tmf, 0, sizeof(*tmf)); - - tmf->tmf_code = code; - tmf->cb_state_func = tmf_sent_cb; - tmf->cb_data = cb_data; + tmf->tmf_code = code; } static void isci_task_build_abort_task_tmf(struct isci_tmf *tmf, enum isci_tmf_function_codes code, - void (*tmf_sent_cb)(enum isci_tmf_cb_state, - struct isci_tmf *, - void *), struct isci_request *old_request) { - isci_task_build_tmf(tmf, code, tmf_sent_cb, old_request); + isci_task_build_tmf(tmf, code); tmf->io_tag = old_request->io_tag; } /** - * isci_task_validate_request_to_abort() - This function checks the given I/O - * against the "started" state. If the request is still "started", it's - * state is changed to aborted. NOTE: isci_host->scic_lock MUST BE HELD - * BEFORE CALLING THIS FUNCTION. - * @isci_request: This parameter specifies the request object to control. - * @isci_host: This parameter specifies the ISCI host object - * @isci_device: This is the device to which the request is pending. - * @aborted_io_completion: This is a completion structure that will be added to - * the request in case it is changed to aborting; this completion is - * triggered when the request is fully completed. - * - * Either "started" on successful change of the task status to "aborted", or - * "unallocated" if the task cannot be controlled. - */ -static enum isci_request_status isci_task_validate_request_to_abort( - struct isci_request *isci_request, - struct isci_host *isci_host, - struct isci_remote_device *isci_device, - struct completion *aborted_io_completion) -{ - enum isci_request_status old_state = unallocated; - - /* Only abort the task if it's in the - * device's request_in_process list - */ - if (isci_request && !list_empty(&isci_request->dev_node)) { - old_state = isci_request_change_started_to_aborted( - isci_request, aborted_io_completion); - - } - - return old_state; -} - -static int isci_request_is_dealloc_managed(enum isci_request_status stat) -{ - switch (stat) { - case aborted: - case aborting: - case terminating: - case completed: - case dead: - return true; - default: - return false; - } -} - -/** - * isci_terminate_request_core() - This function will terminate the given - * request, and wait for it to complete. This function must only be called - * from a thread that can wait. Note that the request is terminated and - * completed (back to the host, if started there). - * @ihost: This SCU. - * @idev: The target. - * @isci_request: The I/O request to be terminated. - * - */ -static void isci_terminate_request_core(struct isci_host *ihost, - struct isci_remote_device *idev, - struct isci_request *isci_request) -{ - enum sci_status status = SCI_SUCCESS; - bool was_terminated = false; - bool needs_cleanup_handling = false; - unsigned long flags; - unsigned long termination_completed = 1; - struct completion *io_request_completion; - - dev_dbg(&ihost->pdev->dev, - "%s: device = %p; request = %p\n", - __func__, idev, isci_request); - - spin_lock_irqsave(&ihost->scic_lock, flags); - - io_request_completion = isci_request->io_request_completion; - - /* Note that we are not going to control - * the target to abort the request. - */ - set_bit(IREQ_COMPLETE_IN_TARGET, &isci_request->flags); - - /* Make sure the request wasn't just sitting around signalling - * device condition (if the request handle is NULL, then the - * request completed but needed additional handling here). - */ - if (!test_bit(IREQ_TERMINATED, &isci_request->flags)) { - was_terminated = true; - needs_cleanup_handling = true; - status = sci_controller_terminate_request(ihost, - idev, - isci_request); - } - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - /* - * The only time the request to terminate will - * fail is when the io request is completed and - * being aborted. - */ - if (status != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: sci_controller_terminate_request" - " returned = 0x%x\n", - __func__, status); - - isci_request->io_request_completion = NULL; - - } else { - if (was_terminated) { - dev_dbg(&ihost->pdev->dev, - "%s: before completion wait (%p/%p)\n", - __func__, isci_request, io_request_completion); - - /* Wait here for the request to complete. */ - termination_completed - = wait_for_completion_timeout( - io_request_completion, - msecs_to_jiffies(ISCI_TERMINATION_TIMEOUT_MSEC)); - - if (!termination_completed) { - - /* The request to terminate has timed out. */ - spin_lock_irqsave(&ihost->scic_lock, flags); - - /* Check for state changes. */ - if (!test_bit(IREQ_TERMINATED, - &isci_request->flags)) { - - /* The best we can do is to have the - * request die a silent death if it - * ever really completes. - */ - isci_request_mark_zombie(ihost, - isci_request); - needs_cleanup_handling = true; - } else - termination_completed = 1; - - spin_unlock_irqrestore(&ihost->scic_lock, - flags); - - if (!termination_completed) { - - dev_dbg(&ihost->pdev->dev, - "%s: *** Timeout waiting for " - "termination(%p/%p)\n", - __func__, io_request_completion, - isci_request); - - /* The request can no longer be referenced - * safely since it may go away if the - * termination every really does complete. - */ - isci_request = NULL; - } - } - if (termination_completed) - dev_dbg(&ihost->pdev->dev, - "%s: after completion wait (%p/%p)\n", - __func__, isci_request, io_request_completion); - } - - if (termination_completed) { - - isci_request->io_request_completion = NULL; - - /* Peek at the status of the request. This will tell - * us if there was special handling on the request such that it - * needs to be detached and freed here. - */ - spin_lock_irqsave(&isci_request->state_lock, flags); - - needs_cleanup_handling - = isci_request_is_dealloc_managed( - isci_request->status); - - spin_unlock_irqrestore(&isci_request->state_lock, flags); - - } - if (needs_cleanup_handling) { - - dev_dbg(&ihost->pdev->dev, - "%s: cleanup isci_device=%p, request=%p\n", - __func__, idev, isci_request); - - if (isci_request != NULL) { - spin_lock_irqsave(&ihost->scic_lock, flags); - isci_free_tag(ihost, isci_request->io_tag); - isci_request_change_state(isci_request, unallocated); - list_del_init(&isci_request->dev_node); - spin_unlock_irqrestore(&ihost->scic_lock, flags); - } - } - } -} - -/** - * isci_terminate_pending_requests() - This function will change the all of the - * requests on the given device's state to "aborting", will terminate the - * requests, and wait for them to complete. This function must only be - * called from a thread that can wait. Note that the requests are all - * terminated and completed (back to the host, if started there). - * @isci_host: This parameter specifies SCU. - * @idev: This parameter specifies the target. - * - */ -void isci_terminate_pending_requests(struct isci_host *ihost, - struct isci_remote_device *idev) -{ - struct completion request_completion; - enum isci_request_status old_state; - unsigned long flags; - LIST_HEAD(list); - - isci_remote_device_suspend(ihost, idev); - - spin_lock_irqsave(&ihost->scic_lock, flags); - list_splice_init(&idev->reqs_in_process, &list); - - /* assumes that isci_terminate_request_core deletes from the list */ - while (!list_empty(&list)) { - struct isci_request *ireq = list_entry(list.next, typeof(*ireq), dev_node); - - /* Change state to "terminating" if it is currently - * "started". - */ - old_state = isci_request_change_started_to_newstate(ireq, - &request_completion, - terminating); - switch (old_state) { - case started: - case completed: - case aborting: - break; - default: - /* termination in progress, or otherwise dispositioned. - * We know the request was on 'list' so should be safe - * to move it back to reqs_in_process - */ - list_move(&ireq->dev_node, &idev->reqs_in_process); - ireq = NULL; - break; - } - - if (!ireq) - continue; - spin_unlock_irqrestore(&ihost->scic_lock, flags); - - init_completion(&request_completion); - - dev_dbg(&ihost->pdev->dev, - "%s: idev=%p request=%p; task=%p old_state=%d\n", - __func__, idev, ireq, - (!test_bit(IREQ_TMF, &ireq->flags) - ? isci_request_access_task(ireq) - : NULL), - old_state); - - /* If the old_state is started: - * This request was not already being aborted. If it had been, - * then the aborting I/O (ie. the TMF request) would not be in - * the aborting state, and thus would be terminated here. Note - * that since the TMF completion's call to the kernel function - * "complete()" does not happen until the pending I/O request - * terminate fully completes, we do not have to implement a - * special wait here for already aborting requests - the - * termination of the TMF request will force the request - * to finish it's already started terminate. - * - * If old_state == completed: - * This request completed from the SCU hardware perspective - * and now just needs cleaning up in terms of freeing the - * request and potentially calling up to libsas. - * - * If old_state == aborting: - * This request has already gone through a TMF timeout, but may - * not have been terminated; needs cleaning up at least. - */ - isci_terminate_request_core(ihost, idev, ireq); - spin_lock_irqsave(&ihost->scic_lock, flags); - } - spin_unlock_irqrestore(&ihost->scic_lock, flags); -} - -/** * isci_task_send_lu_reset_sas() - This function is called by of the SAS Domain * Template functions. * @lun: This parameter specifies the lun to be reset. @@ -809,7 +402,7 @@ static int isci_task_send_lu_reset_sas( * value is "TMF_RESP_FUNC_COMPLETE", or the request timed-out (or * was otherwise unable to be executed ("TMF_RESP_FUNC_FAILED"). */ - isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset, NULL, NULL); + isci_task_build_tmf(&tmf, isci_tmf_ssp_lun_reset); #define ISCI_LU_RESET_TIMEOUT_MS 2000 /* 2 second timeout. */ ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, ISCI_LU_RESET_TIMEOUT_MS); @@ -829,48 +422,41 @@ static int isci_task_send_lu_reset_sas( int isci_task_lu_reset(struct domain_device *dev, u8 *lun) { struct isci_host *ihost = dev_to_ihost(dev); - struct isci_remote_device *isci_device; + struct isci_remote_device *idev; unsigned long flags; int ret; spin_lock_irqsave(&ihost->scic_lock, flags); - isci_device = isci_lookup_device(dev); + idev = isci_lookup_device(dev); spin_unlock_irqrestore(&ihost->scic_lock, flags); dev_dbg(&ihost->pdev->dev, "%s: domain_device=%p, isci_host=%p; isci_device=%p\n", - __func__, dev, ihost, isci_device); + __func__, dev, ihost, idev); - if (!isci_device) { + if (!idev) { /* If the device is gone, escalate to I_T_Nexus_Reset. */ dev_dbg(&ihost->pdev->dev, "%s: No dev\n", __func__); ret = TMF_RESP_FUNC_FAILED; goto out; } - if (isci_remote_device_suspend(ihost, isci_device) != SCI_SUCCESS) { - dev_dbg(&ihost->pdev->dev, - "%s: device = %p; failed to suspend\n", - __func__, isci_device); - ret = TMF_RESP_FUNC_FAILED; - goto out; - } - /* Send the task management part of the reset. */ if (dev_is_sata(dev)) { sas_ata_schedule_reset(dev); ret = TMF_RESP_FUNC_COMPLETE; - } else - ret = isci_task_send_lu_reset_sas(ihost, isci_device, lun); - - /* If the LUN reset worked, all the I/O can now be terminated. */ - if (ret == TMF_RESP_FUNC_COMPLETE) { - /* Terminate all I/O now. */ - isci_terminate_pending_requests(ihost, isci_device); - isci_remote_device_resume(ihost, isci_device, NULL, NULL); + } else { + /* Suspend the RNC, kill all TCs */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { + ret = TMF_RESP_FUNC_FAILED; + goto out; + } + /* Send the task management part of the reset. */ + ret = isci_task_send_lu_reset_sas(ihost, idev, lun); } out: - isci_put_device(isci_device); + isci_put_device(idev); return ret; } @@ -891,63 +477,6 @@ int isci_task_clear_nexus_ha(struct sas_ha_struct *ha) /* Task Management Functions. Must be called from process context. */ /** - * isci_abort_task_process_cb() - This is a helper function for the abort task - * TMF command. It manages the request state with respect to the successful - * transmission / completion of the abort task request. - * @cb_state: This parameter specifies when this function was called - after - * the TMF request has been started and after it has timed-out. - * @tmf: This parameter specifies the TMF in progress. - * - * - */ -static void isci_abort_task_process_cb( - enum isci_tmf_cb_state cb_state, - struct isci_tmf *tmf, - void *cb_data) -{ - struct isci_request *old_request; - - old_request = (struct isci_request *)cb_data; - - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: tmf=%p, old_request=%p\n", - __func__, tmf, old_request); - - switch (cb_state) { - - case isci_tmf_started: - /* The TMF has been started. Nothing to do here, since the - * request state was already set to "aborted" by the abort - * task function. - */ - if ((old_request->status != aborted) - && (old_request->status != completed)) - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: Bad request status (%d): tmf=%p, old_request=%p\n", - __func__, old_request->status, tmf, old_request); - break; - - case isci_tmf_timed_out: - - /* Set the task's state to "aborting", since the abort task - * function thread set it to "aborted" (above) in anticipation - * of the task management request working correctly. Since the - * timeout has now fired, the TMF request failed. We set the - * state such that the request completion will indicate the - * device is no longer present. - */ - isci_request_change_state(old_request, aborting); - break; - - default: - dev_dbg(&old_request->isci_host->pdev->dev, - "%s: Bad cb_state (%d): tmf=%p, old_request=%p\n", - __func__, cb_state, tmf, old_request); - break; - } -} - -/** * isci_task_abort_task() - This function is one of the SAS Domain Template * functions. This function is called by libsas to abort a specified task. * @task: This parameter specifies the SAS task to abort. @@ -956,22 +485,20 @@ static void isci_abort_task_process_cb( */ int isci_task_abort_task(struct sas_task *task) { - struct isci_host *isci_host = dev_to_ihost(task->dev); + struct isci_host *ihost = dev_to_ihost(task->dev); DECLARE_COMPLETION_ONSTACK(aborted_io_completion); struct isci_request *old_request = NULL; - enum isci_request_status old_state; - struct isci_remote_device *isci_device = NULL; + struct isci_remote_device *idev = NULL; struct isci_tmf tmf; int ret = TMF_RESP_FUNC_FAILED; unsigned long flags; - int perform_termination = 0; /* Get the isci_request reference from the task. Note that * this check does not depend on the pending request list * in the device, because tasks driving resets may land here * after completion in the core. */ - spin_lock_irqsave(&isci_host->scic_lock, flags); + spin_lock_irqsave(&ihost->scic_lock, flags); spin_lock(&task->task_state_lock); old_request = task->lldd_task; @@ -980,20 +507,20 @@ int isci_task_abort_task(struct sas_task *task) if (!(task->task_state_flags & SAS_TASK_STATE_DONE) && (task->task_state_flags & SAS_TASK_AT_INITIATOR) && old_request) - isci_device = isci_lookup_device(task->dev); + idev = isci_lookup_device(task->dev); spin_unlock(&task->task_state_lock); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + spin_unlock_irqrestore(&ihost->scic_lock, flags); - dev_warn(&isci_host->pdev->dev, - "%s: dev = %p, task = %p, old_request == %p\n", - __func__, isci_device, task, old_request); + dev_warn(&ihost->pdev->dev, + "%s: dev = %p, task = %p, old_request == %p\n", + __func__, idev, task, old_request); /* Device reset conditions signalled in task_state_flags are the * responsbility of libsas to observe at the start of the error * handler thread. */ - if (!isci_device || !old_request) { + if (!idev || !old_request) { /* The request has already completed and there * is nothing to do here other than to set the task * done bit, and indicate that the task abort function @@ -1007,126 +534,66 @@ int isci_task_abort_task(struct sas_task *task) ret = TMF_RESP_FUNC_COMPLETE; - dev_warn(&isci_host->pdev->dev, - "%s: abort task not needed for %p\n", - __func__, task); + dev_warn(&ihost->pdev->dev, + "%s: abort task not needed for %p\n", + __func__, task); goto out; } - - spin_lock_irqsave(&isci_host->scic_lock, flags); - - /* Check the request status and change to "aborted" if currently - * "starting"; if true then set the I/O kernel completion - * struct that will be triggered when the request completes. - */ - old_state = isci_task_validate_request_to_abort( - old_request, isci_host, isci_device, - &aborted_io_completion); - if ((old_state != started) && - (old_state != completed) && - (old_state != aborting)) { - - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - - /* The request was already being handled by someone else (because - * they got to set the state away from started). - */ - dev_warn(&isci_host->pdev->dev, - "%s: device = %p; old_request %p already being aborted\n", - __func__, - isci_device, old_request); - ret = TMF_RESP_FUNC_COMPLETE; + /* Suspend the RNC, kill the TC */ + if (isci_remote_device_suspend_terminate(ihost, idev, old_request) + != SCI_SUCCESS) { + dev_warn(&ihost->pdev->dev, + "%s: isci_remote_device_reset_terminate(dev=%p, " + "req=%p, task=%p) failed\n", + __func__, idev, old_request, task); + ret = TMF_RESP_FUNC_FAILED; goto out; } + spin_lock_irqsave(&ihost->scic_lock, flags); + if (task->task_proto == SAS_PROTOCOL_SMP || sas_protocol_ata(task->task_proto) || test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { - spin_unlock_irqrestore(&isci_host->scic_lock, flags); + /* No task to send, so explicitly resume the device here */ + sci_remote_device_resume(idev, NULL, NULL); - dev_warn(&isci_host->pdev->dev, - "%s: %s request" - " or complete_in_target (%d), thus no TMF\n", - __func__, - ((task->task_proto == SAS_PROTOCOL_SMP) - ? "SMP" - : (sas_protocol_ata(task->task_proto) - ? "SATA/STP" - : "") - ), - test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)); - - if (test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { - spin_lock_irqsave(&task->task_state_lock, flags); - task->task_state_flags |= SAS_TASK_STATE_DONE; - task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | - SAS_TASK_STATE_PENDING); - spin_unlock_irqrestore(&task->task_state_lock, flags); - ret = TMF_RESP_FUNC_COMPLETE; - } else { - spin_lock_irqsave(&task->task_state_lock, flags); - task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | - SAS_TASK_STATE_PENDING); - spin_unlock_irqrestore(&task->task_state_lock, flags); - } + spin_unlock_irqrestore(&ihost->scic_lock, flags); - /* STP and SMP devices are not sent a TMF, but the - * outstanding I/O request is terminated below. This is - * because SATA/STP and SMP discovery path timeouts directly - * call the abort task interface for cleanup. - */ - perform_termination = 1; - - if (isci_device && !test_bit(IDEV_GONE, &isci_device->flags) && - (isci_remote_device_suspend(isci_host, isci_device) - != SCI_SUCCESS)) { - dev_warn(&isci_host->pdev->dev, - "%s: device = %p; failed to suspend\n", - __func__, isci_device); - goto out; - } + dev_warn(&ihost->pdev->dev, + "%s: %s request" + " or complete_in_target (%d), thus no TMF\n", + __func__, + ((task->task_proto == SAS_PROTOCOL_SMP) + ? "SMP" + : (sas_protocol_ata(task->task_proto) + ? "SATA/STP" + : "") + ), + test_bit(IREQ_COMPLETE_IN_TARGET, + &old_request->flags)); + spin_lock_irqsave(&task->task_state_lock, flags); + task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | + SAS_TASK_STATE_PENDING); + task->task_state_flags |= SAS_TASK_STATE_DONE; + spin_unlock_irqrestore(&task->task_state_lock, flags); + + ret = TMF_RESP_FUNC_COMPLETE; } else { /* Fill in the tmf stucture */ isci_task_build_abort_task_tmf(&tmf, isci_tmf_ssp_task_abort, - isci_abort_task_process_cb, old_request); - spin_unlock_irqrestore(&isci_host->scic_lock, flags); - - if (isci_remote_device_suspend(isci_host, isci_device) - != SCI_SUCCESS) { - dev_warn(&isci_host->pdev->dev, - "%s: device = %p; failed to suspend\n", - __func__, isci_device); - goto out; - } + spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* Send the task management request. */ #define ISCI_ABORT_TASK_TIMEOUT_MS 500 /* 1/2 second timeout */ - ret = isci_task_execute_tmf(isci_host, isci_device, &tmf, + ret = isci_task_execute_tmf(ihost, idev, &tmf, ISCI_ABORT_TASK_TIMEOUT_MS); - - if (ret == TMF_RESP_FUNC_COMPLETE) - perform_termination = 1; - else - dev_warn(&isci_host->pdev->dev, - "%s: isci_task_send_tmf failed\n", __func__); - } - if (perform_termination) { - set_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags); - - /* Clean up the request on our side, and wait for the aborted - * I/O to complete. - */ - isci_terminate_request_core(isci_host, isci_device, - old_request); - isci_remote_device_resume(isci_host, isci_device, NULL, NULL); } - - /* Make sure we do not leave a reference to aborted_io_completion */ - old_request->io_request_completion = NULL; - out: - isci_put_device(isci_device); +out: + isci_put_device(idev); return ret; } @@ -1222,14 +689,11 @@ isci_task_request_complete(struct isci_host *ihost, { struct isci_tmf *tmf = isci_request_access_tmf(ireq); struct completion *tmf_complete = NULL; - struct completion *request_complete = ireq->io_request_completion; dev_dbg(&ihost->pdev->dev, "%s: request = %p, status=%d\n", __func__, ireq, completion_status); - isci_request_change_state(ireq, completed); - set_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags); if (tmf) { @@ -1253,20 +717,8 @@ isci_task_request_complete(struct isci_host *ihost, */ set_bit(IREQ_TERMINATED, &ireq->flags); - /* As soon as something is in the terminate path, deallocation is - * managed there. Note that the final non-managed state of a task - * request is "completed". - */ - if ((ireq->status == completed) || - !isci_request_is_dealloc_managed(ireq->status)) { - isci_request_change_state(ireq, unallocated); - isci_free_tag(ihost, ireq->io_tag); - list_del_init(&ireq->dev_node); - } - - /* "request_complete" is set if the task was being terminated. */ - if (request_complete) - complete(request_complete); + isci_free_tag(ihost, ireq->io_tag); + list_del_init(&ireq->dev_node); /* The task management part completes last. */ if (tmf_complete) @@ -1277,37 +729,37 @@ static int isci_reset_device(struct isci_host *ihost, struct domain_device *dev, struct isci_remote_device *idev) { - int rc; - enum sci_status status; + int rc = TMF_RESP_FUNC_COMPLETE, reset_stat; struct sas_phy *phy = sas_get_local_phy(dev); struct isci_port *iport = dev->port->lldd_port; dev_dbg(&ihost->pdev->dev, "%s: idev %p\n", __func__, idev); - if (isci_remote_device_reset(ihost, idev) != SCI_SUCCESS) { + /* Suspend the RNC, terminate all outstanding TCs. */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { rc = TMF_RESP_FUNC_FAILED; goto out; } + /* Note that since the termination for outstanding requests succeeded, + * this function will return success. This is because the resets will + * only fail if the device has been removed (ie. hotplug), and the + * primary duty of this function is to cleanup tasks, so that is the + * relevant status. + */ if (scsi_is_sas_phy_local(phy)) { struct isci_phy *iphy = &ihost->phys[phy->number]; - rc = isci_port_perform_hard_reset(ihost, iport, iphy); + reset_stat = isci_port_perform_hard_reset(ihost, iport, iphy); } else - rc = sas_phy_reset(phy, !dev_is_sata(dev)); + reset_stat = sas_phy_reset(phy, !dev_is_sata(dev)); - /* Terminate in-progress I/O now. */ - isci_remote_device_nuke_requests(ihost, idev); - - /* Since all pending TCs have been cleaned, resume the RNC. */ - status = isci_remote_device_reset_complete(ihost, idev); - - if (status != SCI_SUCCESS) - dev_dbg(&ihost->pdev->dev, - "%s: isci_remote_device_reset_complete(%p) " - "returned %d!\n", __func__, idev, status); + /* Explicitly resume the RNC here, since there was no task sent. */ + isci_remote_device_resume(ihost, idev, NULL, NULL); - dev_dbg(&ihost->pdev->dev, "%s: idev %p complete.\n", __func__, idev); + dev_dbg(&ihost->pdev->dev, "%s: idev %p complete, reset_stat=%d.\n", + __func__, idev, reset_stat); out: sas_put_local_phy(phy); return rc; @@ -1321,7 +773,7 @@ int isci_task_I_T_nexus_reset(struct domain_device *dev) int ret; spin_lock_irqsave(&ihost->scic_lock, flags); - idev = isci_get_device(dev); + idev = isci_get_device(dev->lldd_dev); spin_unlock_irqrestore(&ihost->scic_lock, flags); if (!idev) { diff --git a/drivers/scsi/isci/task.h b/drivers/scsi/isci/task.h index 7b6d0e3..9c06cba 100644 --- a/drivers/scsi/isci/task.h +++ b/drivers/scsi/isci/task.h @@ -63,19 +63,6 @@ struct isci_request; /** - * enum isci_tmf_cb_state - This enum defines the possible states in which the - * TMF callback function is invoked during the TMF execution process. - * - * - */ -enum isci_tmf_cb_state { - - isci_tmf_init_state = 0, - isci_tmf_started, - isci_tmf_timed_out -}; - -/** * enum isci_tmf_function_codes - This enum defines the possible preparations * of task management requests. * @@ -87,6 +74,7 @@ enum isci_tmf_function_codes { isci_tmf_ssp_task_abort = TMF_ABORT_TASK, isci_tmf_ssp_lun_reset = TMF_LU_RESET, }; + /** * struct isci_tmf - This class represents the task management object which * acts as an interface to libsas for processing task management requests @@ -106,15 +94,6 @@ struct isci_tmf { u16 io_tag; enum isci_tmf_function_codes tmf_code; int status; - - /* The optional callback function allows the user process to - * track the TMF transmit / timeout conditions. - */ - void (*cb_state_func)( - enum isci_tmf_cb_state, - struct isci_tmf *, void *); - void *cb_data; - }; static inline void isci_print_tmf(struct isci_host *ihost, struct isci_tmf *tmf) @@ -208,113 +187,4 @@ int isci_queuecommand( struct scsi_cmnd *scsi_cmd, void (*donefunc)(struct scsi_cmnd *)); -/** - * enum isci_completion_selection - This enum defines the possible actions to - * take with respect to a given request's notification back to libsas. - * - * - */ -enum isci_completion_selection { - - isci_perform_normal_io_completion, /* Normal notify (task_done) */ - isci_perform_aborted_io_completion, /* No notification. */ - isci_perform_error_io_completion /* Use sas_task_abort */ -}; - -/** - * isci_task_set_completion_status() - This function sets the completion status - * for the request. - * @task: This parameter is the completed request. - * @response: This parameter is the response code for the completed task. - * @status: This parameter is the status code for the completed task. - * -* @return The new notification mode for the request. -*/ -static inline enum isci_completion_selection -isci_task_set_completion_status( - struct sas_task *task, - enum service_response response, - enum exec_status status, - enum isci_completion_selection task_notification_selection) -{ - unsigned long flags; - - spin_lock_irqsave(&task->task_state_lock, flags); - - /* If a device reset is being indicated, make sure the I/O - * is in the error path. - */ - if (task->task_state_flags & SAS_TASK_NEED_DEV_RESET) { - /* Fail the I/O to make sure it goes into the error path. */ - response = SAS_TASK_UNDELIVERED; - status = SAM_STAT_TASK_ABORTED; - - task_notification_selection = isci_perform_error_io_completion; - } - task->task_status.resp = response; - task->task_status.stat = status; - - switch (task->task_proto) { - - case SAS_PROTOCOL_SATA: - case SAS_PROTOCOL_STP: - case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: - - if (task_notification_selection - == isci_perform_error_io_completion) { - /* SATA/STP I/O has it's own means of scheduling device - * error handling on the normal path. - */ - task_notification_selection - = isci_perform_normal_io_completion; - } - break; - default: - break; - } - - switch (task_notification_selection) { - - case isci_perform_error_io_completion: - - if (task->task_proto == SAS_PROTOCOL_SMP) { - /* There is no error escalation in the SMP case. - * Convert to a normal completion to avoid the - * timeout in the discovery path and to let the - * next action take place quickly. - */ - task_notification_selection - = isci_perform_normal_io_completion; - - /* Fall through to the normal case... */ - } else { - /* Use sas_task_abort */ - /* Leave SAS_TASK_STATE_DONE clear - * Leave SAS_TASK_AT_INITIATOR set. - */ - break; - } - - case isci_perform_aborted_io_completion: - /* This path can occur with task-managed requests as well as - * requests terminated because of LUN or device resets. - */ - /* Fall through to the normal case... */ - case isci_perform_normal_io_completion: - /* Normal notification (task_done) */ - task->task_state_flags |= SAS_TASK_STATE_DONE; - task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | - SAS_TASK_STATE_PENDING); - break; - default: - WARN_ONCE(1, "unknown task_notification_selection: %d\n", - task_notification_selection); - break; - } - - spin_unlock_irqrestore(&task->task_state_lock, flags); - - return task_notification_selection; - -} #endif /* !defined(_SCI_TASK_H_) */ -- cgit v1.1 From 59e35396436c564b5019e1a70073900bc3e19f4f Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:54 -0800 Subject: isci: Add suspension cases for RNC INVALIDATING, POSTING states. The RNC can be any of the states in the loop from suspended to ready when the API "suspend" or "resume" are called. This change adds destination states parameters that control the suspension / resumption action of the RNC statemachine for those transition states. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/port.c | 11 --- drivers/scsi/isci/remote_device.c | 2 +- drivers/scsi/isci/remote_node_context.c | 145 +++++++++++++++++++++----------- drivers/scsi/isci/remote_node_context.h | 10 ++- 4 files changed, 105 insertions(+), 63 deletions(-) diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index ed206c5..f1866b0 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -1688,17 +1688,6 @@ int isci_port_perform_hard_reset(struct isci_host *ihost, struct isci_port *ipor __func__, iport, status); } - - /* If the hard reset for the port has failed, consider this - * the same as link failures on all phys in the port. - */ - if (ret != TMF_RESP_FUNC_COMPLETE) { - - dev_err(&ihost->pdev->dev, - "%s: iport = %p; hard reset failed " - "(0x%x) - driving explicit link fail for all phys\n", - __func__, iport, iport->hard_reset_status); - } return ret; } diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index c47304c..cf5d554 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -192,7 +192,7 @@ static void isci_remote_device_not_ready(struct isci_host *ihost, u32 reason) { dev_dbg(&ihost->pdev->dev, - "%s: isci_device = %p\n", __func__, idev); + "%s: isci_device = %p; reason = %d\n", __func__, idev, reason); switch (reason) { case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED: diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index feeca17..75cf043 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -165,21 +165,24 @@ static void sci_remote_node_context_construct_buffer(struct sci_remote_node_cont static void sci_remote_node_context_setup_to_resume( struct sci_remote_node_context *sci_rnc, scics_sds_remote_node_context_callback callback, - void *callback_parameter) + void *callback_parameter, + enum sci_remote_node_context_destination_state dest_param) { - if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) { - sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY; - sci_rnc->user_callback = callback; - sci_rnc->user_cookie = callback_parameter; + if (sci_rnc->destination_state != RNC_DEST_FINAL) { + sci_rnc->destination_state = dest_param; + if (callback != NULL) { + sci_rnc->user_callback = callback; + sci_rnc->user_cookie = callback_parameter; + } } } -static void sci_remote_node_context_setup_to_destory( +static void sci_remote_node_context_setup_to_destroy( struct sci_remote_node_context *sci_rnc, scics_sds_remote_node_context_callback callback, void *callback_parameter) { - sci_rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL; + sci_rnc->destination_state = RNC_DEST_FINAL; sci_rnc->user_callback = callback; sci_rnc->user_cookie = callback_parameter; } @@ -203,9 +206,13 @@ static void sci_remote_node_context_notify_user( static void sci_remote_node_context_continue_state_transitions(struct sci_remote_node_context *rnc) { - if (rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY) + if ((rnc->destination_state == RNC_DEST_READY) || + (rnc->destination_state == RNC_DEST_SUSPENDED_RESUME)) { + rnc->destination_state = RNC_DEST_READY; sci_remote_node_context_resume(rnc, rnc->user_callback, rnc->user_cookie); + } else + rnc->destination_state = RNC_DEST_UNSPECIFIED; } static void sci_remote_node_context_validate_context_buffer(struct sci_remote_node_context *sci_rnc) @@ -252,7 +259,7 @@ static void sci_remote_node_context_initial_state_enter(struct sci_base_state_ma * someone requested to destroy the remote node context object. */ if (sm->previous_state_id == SCI_RNC_INVALIDATING) { - rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; + rnc->destination_state = RNC_DEST_UNSPECIFIED; sci_remote_node_context_notify_user(rnc); } } @@ -297,10 +304,26 @@ static void sci_remote_node_context_resuming_state_enter(struct sci_base_state_m static void sci_remote_node_context_ready_state_enter(struct sci_base_state_machine *sm) { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); - - rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; - - if (rnc->user_callback) + enum sci_remote_node_context_destination_state dest_select; + scics_sds_remote_node_context_callback usr_cb = rnc->user_callback; + void *usr_param = rnc->user_cookie; + int tell_user = 1; + + dest_select = rnc->destination_state; + rnc->destination_state = RNC_DEST_UNSPECIFIED; + + if ((dest_select == RNC_DEST_SUSPENDED) || + (dest_select == RNC_DEST_SUSPENDED_RESUME)) { + sci_remote_node_context_suspend( + rnc, SCI_SOFTWARE_SUSPENSION, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); + + if (dest_select == RNC_DEST_SUSPENDED_RESUME) { + sci_remote_node_context_resume(rnc, usr_cb, usr_param); + tell_user = 0; /* Wait until ready again. */ + } + } + if (tell_user && rnc->user_callback) sci_remote_node_context_notify_user(rnc); } @@ -366,7 +389,7 @@ void sci_remote_node_context_construct(struct sci_remote_node_context *rnc, memset(rnc, 0, sizeof(struct sci_remote_node_context)); rnc->remote_node_index = remote_node_index; - rnc->destination_state = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; + rnc->destination_state = RNC_DEST_UNSPECIFIED; sci_init_sm(&rnc->sm, sci_remote_node_context_state_table, SCI_RNC_INITIAL); } @@ -390,11 +413,11 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con break; case SCI_RNC_INVALIDATING: if (scu_get_event_code(event_code) == SCU_EVENT_POST_RNC_INVALIDATE_COMPLETE) { - if (sci_rnc->destination_state == SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL) - state = SCI_RNC_INITIAL; + if (sci_rnc->destination_state == RNC_DEST_FINAL) + next_state = SCI_RNC_INITIAL; else - state = SCI_RNC_POSTING; - sci_change_state(&sci_rnc->sm, state); + next_state = SCI_RNC_POSTING; + sci_change_state(&sci_rnc->sm, next_state); } else { switch (scu_get_event_type(event_code)) { case SCU_EVENT_TYPE_RNC_SUSPEND_TX: @@ -483,7 +506,7 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context state = sci_rnc->sm.current_state_id; switch (state) { case SCI_RNC_INVALIDATING: - sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p); + sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p); return SCI_SUCCESS; case SCI_RNC_POSTING: case SCI_RNC_RESUMING: @@ -491,7 +514,7 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context case SCI_RNC_TX_SUSPENDED: case SCI_RNC_TX_RX_SUSPENDED: case SCI_RNC_AWAIT_SUSPENSION: - sci_remote_node_context_setup_to_destory(sci_rnc, cb_fn, cb_p); + sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p); sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); return SCI_SUCCESS; case SCI_RNC_INITIAL: @@ -522,6 +545,8 @@ enum sci_status sci_remote_node_context_suspend( = sci_rnc->sm.current_state_id; struct isci_remote_device *idev = rnc_to_dev(sci_rnc); enum sci_status status = SCI_FAILURE_INVALID_STATE; + enum sci_remote_node_context_destination_state dest_param = + RNC_DEST_UNSPECIFIED; dev_dbg(scirdev_to_dev(idev), "%s: current state %d, current suspend_type %x dest state %d," @@ -531,12 +556,31 @@ enum sci_status sci_remote_node_context_suspend( suspend_type); /* Disable automatic state continuations if explicitly suspending. */ - if (suspend_reason == SCI_SOFTWARE_SUSPENSION) - sci_rnc->destination_state - = SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED; + if ((suspend_reason != SCI_SOFTWARE_SUSPENSION) || + (sci_rnc->destination_state == RNC_DEST_FINAL)) + dest_param = sci_rnc->destination_state; + switch (state) { + case SCI_RNC_RESUMING: + break; /* The RNC has been posted, so start the suspend. */ case SCI_RNC_READY: break; + case SCI_RNC_INVALIDATING: + if (sci_rnc->destination_state == RNC_DEST_FINAL) { + dev_warn(scirdev_to_dev(idev), + "%s: already destroying %p\n", + __func__, sci_rnc); + return SCI_FAILURE_INVALID_STATE; + } + /* Fall through and handle like SCI_RNC_POSTING */ + case SCI_RNC_POSTING: + /* Set the destination state to AWAIT - this signals the + * entry into the SCI_RNC_READY state that a suspension + * needs to be done immediately. + */ + sci_rnc->destination_state = RNC_DEST_SUSPENDED; + return SCI_SUCCESS; + case SCI_RNC_TX_SUSPENDED: if (suspend_type == SCU_EVENT_TL_RNC_SUSPEND_TX) status = SCI_SUCCESS; @@ -556,6 +600,7 @@ enum sci_status sci_remote_node_context_suspend( rnc_state_name(state)); return SCI_FAILURE_INVALID_STATE; } + sci_rnc->destination_state = dest_param; sci_rnc->user_callback = cb_fn; sci_rnc->user_cookie = cb_p; sci_rnc->suspend_type = suspend_type; @@ -590,18 +635,31 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) return SCI_FAILURE_INVALID_STATE; - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); + sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); sci_remote_node_context_construct_buffer(sci_rnc); sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING); return SCI_SUCCESS; case SCI_RNC_POSTING: case SCI_RNC_INVALIDATING: case SCI_RNC_RESUMING: - if (sci_rnc->destination_state != SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY) - return SCI_FAILURE_INVALID_STATE; - - sci_rnc->user_callback = cb_fn; - sci_rnc->user_cookie = cb_p; + /* We are still waiting to post when a resume was requested. */ + switch (sci_rnc->destination_state) { + case RNC_DEST_SUSPENDED: + case RNC_DEST_SUSPENDED_RESUME: + /* Previously waiting to suspend after posting. Now + * continue onto resumption. + */ + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_SUSPENDED_RESUME); + break; + default: + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); + break; + } return SCI_SUCCESS; case SCI_RNC_TX_SUSPENDED: case SCI_RNC_TX_RX_SUSPENDED: { @@ -613,7 +671,8 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s * to clear the TCi to NCQ tag mapping table for the RNi. * All other device types we can just resume. */ - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); + sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); if (dev_is_sata(dev) && dev->parent) sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); @@ -622,7 +681,9 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s return SCI_SUCCESS; } case SCI_RNC_AWAIT_SUSPENSION: - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p); + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_SUSPENDED_RESUME); return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), @@ -663,24 +724,12 @@ enum sci_status sci_remote_node_context_start_task( scics_sds_remote_node_context_callback cb_fn, void *cb_p) { - enum scis_sds_remote_node_context_states state; - - state = sci_rnc->sm.current_state_id; - switch (state) { - case SCI_RNC_RESUMING: - case SCI_RNC_READY: - case SCI_RNC_AWAIT_SUSPENSION: - return SCI_SUCCESS; - case SCI_RNC_TX_SUSPENDED: - case SCI_RNC_TX_RX_SUSPENDED: - sci_remote_node_context_resume(sci_rnc, cb_fn, cb_p); - return SCI_SUCCESS; - default: + enum sci_status status = sci_remote_node_context_resume(sci_rnc, + cb_fn, cb_p); + if (status != SCI_SUCCESS) dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: invalid state %s\n", __func__, - rnc_state_name(state)); - return SCI_FAILURE_INVALID_STATE; - } + "%s: resume failed: %d\n", __func__, status); + return status; } int sci_remote_node_context_is_safe_to_abort( diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 2870af1..4831906 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -141,9 +141,13 @@ const char *rnc_state_name(enum scis_sds_remote_node_context_states state); * node context. */ enum sci_remote_node_context_destination_state { - SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_UNSPECIFIED, - SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_READY, - SCIC_SDS_REMOTE_NODE_DESTINATION_STATE_FINAL + RNC_DEST_UNSPECIFIED, + RNC_DEST_READY, + RNC_DEST_FINAL, + RNC_DEST_SUSPENDED, /* Set when suspend during post/invalidate */ + RNC_DEST_SUSPENDED_RESUME /* Set when a resume was done during posting + * or invalidating and already suspending. + */ }; /** -- cgit v1.1 From 637325028f3a9e9cf411ede96063997611f976e4 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:55 -0800 Subject: isci: Device access in the error path does not depend on IDEV_GONE. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/task.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 29ce881..9d8720d 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -427,7 +427,7 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) int ret; spin_lock_irqsave(&ihost->scic_lock, flags); - idev = isci_lookup_device(dev); + idev = isci_get_device(dev->lldd_dev); spin_unlock_irqrestore(&ihost->scic_lock, flags); dev_dbg(&ihost->pdev->dev, @@ -507,7 +507,7 @@ int isci_task_abort_task(struct sas_task *task) if (!(task->task_state_flags & SAS_TASK_STATE_DONE) && (task->task_state_flags & SAS_TASK_AT_INITIATOR) && old_request) - idev = isci_lookup_device(task->dev); + idev = isci_get_device(task->dev->lldd_dev); spin_unlock(&task->task_state_lock); spin_unlock_irqrestore(&ihost->scic_lock, flags); @@ -593,6 +593,9 @@ int isci_task_abort_task(struct sas_task *task) ISCI_ABORT_TASK_TIMEOUT_MS); } out: + dev_warn(&ihost->pdev->dev, + "%s: Done; dev = %p, task = %p , old_request == %p\n", + __func__, idev, task, old_request); isci_put_device(idev); return ret; } -- cgit v1.1 From aa20d9343079b1f0bebd43dec82ecfd4af5e43da Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:56 -0800 Subject: isci: All pending TCs are terminated when the RNC is invalidated. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_node_context.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 75cf043..adbb4b8 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -275,8 +275,8 @@ static void sci_remote_node_context_invalidating_state_enter(struct sci_base_sta { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); - /* Terminate outstanding requests pending abort. */ - sci_remote_device_abort_requests_pending_abort(rnc_to_dev(rnc)); + /* Terminate all outstanding requests. */ + sci_remote_device_terminate_requests(rnc_to_dev(rnc)); sci_remote_node_context_invalidate_context_buffer(rnc); } -- cgit v1.1 From 033751f6643adf616b85ac5eea7ce784bdde1b50 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:56 -0800 Subject: isci: Only set IDEV_GONE in the device stop path. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/port.c | 23 ----------------------- drivers/scsi/isci/remote_device.c | 3 --- 2 files changed, 26 deletions(-) diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index f1866b0..da0c4e1 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -240,32 +240,9 @@ static void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy, struct isci_port *isci_port) { - struct isci_remote_device *isci_device; - dev_dbg(&isci_host->pdev->dev, "%s: isci_port = %p\n", __func__, isci_port); - if (isci_port) { - - /* check to see if this is the last phy on this port. */ - if (isci_phy->sas_phy.port && - isci_phy->sas_phy.port->num_phys == 1) { - /* change the state for all devices on this port. The - * next task sent to this device will be returned as - * SAS_TASK_UNDELIVERED, and the scsi mid layer will - * remove the target - */ - list_for_each_entry(isci_device, - &isci_port->remote_dev_list, - node) { - dev_dbg(&isci_host->pdev->dev, - "%s: isci_device = %p\n", - __func__, isci_device); - set_bit(IDEV_GONE, &isci_device->flags); - } - } - } - /* Notify libsas of the borken link, this will trigger calls to our * isci_port_deformed and isci_dev_gone functions. */ diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index cf5d554..b26ab05 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -195,9 +195,6 @@ static void isci_remote_device_not_ready(struct isci_host *ihost, "%s: isci_device = %p; reason = %d\n", __func__, idev, reason); switch (reason) { - case SCIC_REMOTE_DEVICE_NOT_READY_STOP_REQUESTED: - set_bit(IDEV_GONE, &idev->flags); - break; case SCIC_REMOTE_DEVICE_NOT_READY_SATA_SDB_ERROR_FIS_RECEIVED: set_bit(IDEV_IO_NCQERROR, &idev->flags); -- cgit v1.1 From d6b2a0e4a066ea51322e16e66b25028cb0b4ca7e Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:57 -0800 Subject: isci: Remove isci_device reqs_in_process and dev_node from isci_device. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/init.c | 1 - drivers/scsi/isci/remote_device.c | 6 +----- drivers/scsi/isci/remote_device.h | 1 - drivers/scsi/isci/request.c | 12 ------------ drivers/scsi/isci/request.h | 2 -- drivers/scsi/isci/task.c | 4 ---- 6 files changed, 1 insertion(+), 25 deletions(-) diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index 39f1270..f2a8a334 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -569,7 +569,6 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { struct isci_remote_device *idev = &ihost->devices[i]; - INIT_LIST_HEAD(&idev->reqs_in_process); INIT_LIST_HEAD(&idev->node); } diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index b26ab05..b14eff3 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -919,7 +919,7 @@ static void isci_remote_device_deconstruct(struct isci_host *ihost, struct isci_ * here should go through isci_remote_device_nuke_requests. * If we hit this condition, we will need a way to complete * io requests in process */ - BUG_ON(!list_empty(&idev->reqs_in_process)); + BUG_ON(idev->started_request_count > 0); sci_remote_device_destruct(idev); list_del_init(&idev->node); @@ -1345,10 +1345,6 @@ isci_remote_device_alloc(struct isci_host *ihost, struct isci_port *iport) dev_warn(&ihost->pdev->dev, "%s: failed\n", __func__); return NULL; } - - if (WARN_ONCE(!list_empty(&idev->reqs_in_process), "found requests in process\n")) - return NULL; - if (WARN_ONCE(!list_empty(&idev->node), "found non-idle remote device\n")) return NULL; diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index da43698..8b7817c 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -90,7 +90,6 @@ struct isci_remote_device { struct isci_port *isci_port; struct domain_device *domain_dev; struct list_head node; - struct list_head reqs_in_process; struct sci_base_state_machine sm; u32 device_port_width; enum sas_linkrate connection_rate; diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index f4e80f3..662f36d 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2956,9 +2956,6 @@ static void isci_request_io_request_complete(struct isci_host *ihost, /* Add to the completed list. */ list_add(&request->completed_node, &ihost->requests_to_complete); - /* Take the request off the device's pending request list. */ - list_del_init(&request->dev_node); - /* complete the io request to the core. */ sci_controller_complete_io(ihost, request->target_device, request); @@ -3412,7 +3409,6 @@ static struct isci_request *isci_request_from_tag(struct isci_host *ihost, u16 t ireq->flags = 0; ireq->num_sg_entries = 0; INIT_LIST_HEAD(&ireq->completed_node); - INIT_LIST_HEAD(&ireq->dev_node); return ireq; } @@ -3496,17 +3492,9 @@ int isci_request_execute(struct isci_host *ihost, struct isci_remote_device *ide spin_unlock_irqrestore(&ihost->scic_lock, flags); return status; } - /* Either I/O started OK, or the core has signaled that * the device needs a target reset. - * - * In either case, hold onto the I/O for later. - * - * Update it's status and add it to the list in the - * remote device object. */ - list_add(&ireq->dev_node, &idev->reqs_in_process); - if (status != SCI_SUCCESS) { /* The request did not really start in the * hardware, so clear the request handle diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index f3116a5..d12e975 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -96,8 +96,6 @@ struct isci_request { struct isci_host *isci_host; /* For use in the requests_to_{complete|abort} lists: */ struct list_head completed_node; - /* For use in the reqs_in_process list: */ - struct list_head dev_node; dma_addr_t request_daddr; dma_addr_t zero_scatter_daddr; unsigned int num_sg_entries; diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 9d8720d..222fb0d 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -317,9 +317,6 @@ static int isci_task_execute_tmf(struct isci_host *ihost, spin_unlock_irqrestore(&ihost->scic_lock, flags); goto err_tci; } - /* add the request to the remote device request list. */ - list_add(&ireq->dev_node, &idev->reqs_in_process); - /* The RNC must be unsuspended before the TMF can get a response. */ sci_remote_device_resume(idev, NULL, NULL); @@ -721,7 +718,6 @@ isci_task_request_complete(struct isci_host *ihost, set_bit(IREQ_TERMINATED, &ireq->flags); isci_free_tag(ihost, ireq->io_tag); - list_del_init(&ireq->dev_node); /* The task management part completes last. */ if (tmf_complete) -- cgit v1.1 From c94fc1ad25de885e1c59f714f19bc726e7a21caf Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:58 -0800 Subject: isci: Distinguish between remote device suspension cases For NCQ error conditions among others, there is no need to enable the link layer hang detect timer. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 27 +++++++++++---------------- drivers/scsi/isci/remote_node_context.c | 19 +++++++++++++------ drivers/scsi/isci/remote_node_context.h | 5 +++-- drivers/scsi/isci/request.c | 2 +- 4 files changed, 28 insertions(+), 25 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index b14eff3..cc8ab69 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -72,10 +72,11 @@ const char *dev_state_name(enum sci_remote_device_states state) } #undef C -static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev) +static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, + enum sci_remote_node_suspension_reasons reason) { return sci_remote_node_context_suspend(&idev->rnc, - SCI_SOFTWARE_SUSPENSION, + reason, SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); } @@ -199,7 +200,7 @@ static void isci_remote_device_not_ready(struct isci_host *ihost, set_bit(IDEV_IO_NCQERROR, &idev->flags); /* Suspend the remote device so the I/O can be terminated. */ - sci_remote_device_suspend(idev); + sci_remote_device_suspend(idev, SCI_SW_SUSPEND_NORMAL); /* Kill all outstanding requests for the device. */ sci_remote_device_terminate_requests(idev); @@ -268,7 +269,8 @@ enum sci_status sci_remote_device_stop(struct isci_remote_device *idev, rnc_destruct_done, idev); else { - sci_remote_device_suspend(idev); + sci_remote_device_suspend( + idev, SCI_SW_SUSPEND_LINKHANG_DETECT); sci_remote_device_terminate_requests(idev); } return SCI_SUCCESS; @@ -473,11 +475,7 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, status = SCI_SUCCESS; /* Suspend the associated RNC */ - sci_remote_node_context_suspend( - &idev->rnc, - SCI_SOFTWARE_SUSPENSION, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, - NULL, NULL); + sci_remote_device_suspend(idev, SCI_SW_SUSPEND_NORMAL); dev_dbg(scirdev_to_dev(idev), "%s: device: %p event code: %x: %s\n", @@ -789,9 +787,8 @@ enum sci_status sci_remote_device_start_task(struct isci_host *ihost, * the correct action when the remote node context is suspended * and later resumed. */ - sci_remote_node_context_suspend( - &idev->rnc, SCI_SOFTWARE_SUSPENSION, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); + sci_remote_device_suspend(idev, + SCI_SW_SUSPEND_LINKHANG_DETECT); status = sci_remote_node_context_start_task(&idev->rnc, ireq, sci_remote_device_continue_request, idev); @@ -986,9 +983,7 @@ static void sci_remote_device_resetting_state_enter(struct sci_base_state_machin dev_dbg(&ihost->pdev->dev, "%s: isci_device = %p\n", __func__, idev); - sci_remote_node_context_suspend( - &idev->rnc, SCI_SOFTWARE_SUSPENSION, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); + sci_remote_device_suspend(idev, SCI_SW_SUSPEND_LINKHANG_DETECT); } static void sci_remote_device_resetting_state_exit(struct sci_base_state_machine *sm) @@ -1486,7 +1481,7 @@ enum sci_status isci_remote_device_suspend_terminate( /* Put the device into suspension. */ spin_lock_irqsave(&ihost->scic_lock, flags); - sci_remote_device_suspend(idev); + sci_remote_device_suspend(idev, SCI_SW_SUSPEND_LINKHANG_DETECT); spin_unlock_irqrestore(&ihost->scic_lock, flags); /* Terminate and wait for the completions. */ diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index adbb4b8..85bf5ec 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -52,7 +52,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ - +#include #include "host.h" #include "isci.h" #include "remote_device.h" @@ -315,7 +315,7 @@ static void sci_remote_node_context_ready_state_enter(struct sci_base_state_mach if ((dest_select == RNC_DEST_SUSPENDED) || (dest_select == RNC_DEST_SUSPENDED_RESUME)) { sci_remote_node_context_suspend( - rnc, SCI_SOFTWARE_SUSPENSION, + rnc, SCI_SW_SUSPEND_NORMAL, SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); if (dest_select == RNC_DEST_SUSPENDED_RESUME) { @@ -352,8 +352,10 @@ static void sci_remote_node_context_await_suspend_state_exit( { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); + struct isci_remote_device *idev = rnc_to_dev(rnc); - isci_dev_set_hang_detection_timeout(rnc_to_dev(rnc), 0); + if (dev_is_sata(idev->domain_dev)) + isci_dev_set_hang_detection_timeout(idev, 0); } static const struct sci_base_state sci_remote_node_context_state_table[] = { @@ -556,7 +558,7 @@ enum sci_status sci_remote_node_context_suspend( suspend_type); /* Disable automatic state continuations if explicitly suspending. */ - if ((suspend_reason != SCI_SOFTWARE_SUSPENSION) || + if ((suspend_reason == SCI_HW_SUSPEND) || (sci_rnc->destination_state == RNC_DEST_FINAL)) dest_param = sci_rnc->destination_state; @@ -612,8 +614,13 @@ enum sci_status sci_remote_node_context_suspend( wake_up_all(&ihost->eventq); /* Let observers look. */ return SCI_SUCCESS; } - if (suspend_reason == SCI_SOFTWARE_SUSPENSION) { - isci_dev_set_hang_detection_timeout(idev, 0x00000001); + if ((suspend_reason == SCI_SW_SUSPEND_NORMAL) || + (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT)) { + + if ((suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT) + && dev_is_sata(idev->domain_dev)) + isci_dev_set_hang_detection_timeout(idev, 0x00000001); + sci_remote_device_post_request( idev, SCI_SOFTWARE_SUSPEND_CMD); } diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 4831906..364da37 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -76,8 +76,9 @@ #define SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX 0x0FFF enum sci_remote_node_suspension_reasons { - SCU_HARDWARE_SUSPENSION, - SCI_SOFTWARE_SUSPENSION + SCI_HW_SUSPEND, + SCI_SW_SUSPEND_NORMAL, + SCI_SW_SUSPEND_LINKHANG_DETECT }; #define SCI_SOFTWARE_SUSPEND_CMD SCU_CONTEXT_COMMAND_POST_RNC_SUSPEND_TX_RX #define SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT SCU_EVENT_TL_RNC_SUSPEND_TX_RX diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 662f36d..48b409d 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2380,7 +2380,7 @@ static void sci_request_handle_suspending_completions( sci_remote_node_context_suspend( &ireq->target_device->rnc, - SCU_HARDWARE_SUSPENSION, + SCI_HW_SUSPEND, (is_tx_rx) ? SCU_EVENT_TL_RNC_SUSPEND_TX_RX : SCU_EVENT_TL_RNC_SUSPEND_TX, NULL, NULL); -- cgit v1.1 From e3c84dfdb8f4c675b0ba5cf3fa252dc4056b7ddd Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:58 -0800 Subject: isci: Fix the terminated I/O to not call sas_task_abort(). This addresses a regression from the commit "isci: Redesign device suspension, abort, cleanup." in which the sas_task end condition for terminated I/Os was made to call back on sas_task_abort()". This commit will be rolled into the original. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/request.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 48b409d..809d368 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2832,7 +2832,7 @@ static void isci_request_io_request_complete(struct isci_host *ihost, __func__, request, task); /* The request was terminated explicitly. */ - clear_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); + set_bit(IREQ_COMPLETE_IN_TARGET, &request->flags); response = SAS_TASK_UNDELIVERED; /* See if the device has been/is being stopped. Note -- cgit v1.1 From 447bfbcee070a0b43dd6abc743063d7a02fe65ca Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:41:59 -0800 Subject: isci: Save the suspension hint for upcoming suspensions. In the case of a suspend call while in SCI_RNC_POSTING or INVALIDATING states, the LLHANG detect needed to be saved so the upcoming suspension would enable it correctly. The unused suspend callback parameters were removed. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 6 ++---- drivers/scsi/isci/remote_node_context.c | 16 +++++++--------- drivers/scsi/isci/remote_node_context.h | 5 ++--- drivers/scsi/isci/request.c | 3 +-- 4 files changed, 12 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index cc8ab69..1a85e9e 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -75,10 +75,8 @@ const char *dev_state_name(enum sci_remote_device_states state) static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, enum sci_remote_node_suspension_reasons reason) { - return sci_remote_node_context_suspend(&idev->rnc, - reason, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, - NULL, NULL); + return sci_remote_node_context_suspend(&idev->rnc, reason, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT); } /** diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 85bf5ec..2ac9260 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -315,8 +315,8 @@ static void sci_remote_node_context_ready_state_enter(struct sci_base_state_mach if ((dest_select == RNC_DEST_SUSPENDED) || (dest_select == RNC_DEST_SUSPENDED_RESUME)) { sci_remote_node_context_suspend( - rnc, SCI_SW_SUSPEND_NORMAL, - SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT, NULL, NULL); + rnc, rnc->suspend_reason, + SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT); if (dest_select == RNC_DEST_SUSPENDED_RESUME) { sci_remote_node_context_resume(rnc, usr_cb, usr_param); @@ -539,9 +539,7 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context enum sci_status sci_remote_node_context_suspend( struct sci_remote_node_context *sci_rnc, enum sci_remote_node_suspension_reasons suspend_reason, - u32 suspend_type, - scics_sds_remote_node_context_callback cb_fn, - void *cb_p) + u32 suspend_type) { enum scis_sds_remote_node_context_states state = sci_rnc->sm.current_state_id; @@ -581,6 +579,8 @@ enum sci_status sci_remote_node_context_suspend( * needs to be done immediately. */ sci_rnc->destination_state = RNC_DEST_SUSPENDED; + sci_rnc->suspend_type = suspend_type; + sci_rnc->suspend_reason = suspend_reason; return SCI_SUCCESS; case SCI_RNC_TX_SUSPENDED: @@ -603,14 +603,12 @@ enum sci_status sci_remote_node_context_suspend( return SCI_FAILURE_INVALID_STATE; } sci_rnc->destination_state = dest_param; - sci_rnc->user_callback = cb_fn; - sci_rnc->user_cookie = cb_p; - sci_rnc->suspend_type = suspend_type; + sci_rnc->suspend_type = suspend_type; + sci_rnc->suspend_reason = suspend_reason; if (status == SCI_SUCCESS) { /* Already in the destination state? */ struct isci_host *ihost = idev->owning_port->owning_controller; - sci_remote_node_context_notify_user(sci_rnc); wake_up_all(&ihost->eventq); /* Let observers look. */ return SCI_SUCCESS; } diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 364da37..9eee304 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -169,6 +169,7 @@ struct sci_remote_node_context { * context suspension. */ u32 suspend_type; + enum sci_remote_node_suspension_reasons suspend_reason; /** * This field is true if the remote node context is resuming from its current @@ -209,9 +210,7 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context void *callback_parameter); enum sci_status sci_remote_node_context_suspend(struct sci_remote_node_context *sci_rnc, u32 suspend_type, - u32 suspension_code, - scics_sds_remote_node_context_callback cb_fn, - void *cb_p); + u32 suspension_code); enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *sci_rnc, scics_sds_remote_node_context_callback cb_fn, void *cb_p); diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 809d368..432585b 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2382,8 +2382,7 @@ static void sci_request_handle_suspending_completions( &ireq->target_device->rnc, SCI_HW_SUSPEND, (is_tx_rx) ? SCU_EVENT_TL_RNC_SUSPEND_TX_RX - : SCU_EVENT_TL_RNC_SUSPEND_TX, - NULL, NULL); + : SCU_EVENT_TL_RNC_SUSPEND_TX); } } -- cgit v1.1 From 9608b6408e637abeec101abb6aebd3343f0ebac4 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:00 -0800 Subject: isci: Manage the LLHANG timer enable/disable per-device. The LLHANG timer should be enabled once per device. This patch corrects both the timer enable and the timer disable for the remote device. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 17 +++++++++++++++++ drivers/scsi/isci/remote_device.h | 8 ++------ drivers/scsi/isci/remote_node_context.c | 3 +-- 3 files changed, 20 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 1a85e9e..86aca11 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1520,3 +1520,20 @@ enum sci_status isci_remote_device_reset_complete( return status; } +void isci_dev_set_hang_detection_timeout( + struct isci_remote_device *idev, + u32 timeout) +{ + if (dev_is_sata(idev->domain_dev)) { + if (timeout) { + if (test_and_set_bit(IDEV_RNC_LLHANG_ENABLED, + &idev->flags)) + return; /* Already enabled. */ + } else if (!test_and_clear_bit(IDEV_RNC_LLHANG_ENABLED, + &idev->flags)) + return; /* Not enabled. */ + + sci_port_set_hang_detection_timeout(idev->owning_port, + timeout); + } +} diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 8b7817c..ef563e5 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -85,6 +85,7 @@ struct isci_remote_device { #define IDEV_GONE 3 #define IDEV_IO_READY 4 #define IDEV_IO_NCQERROR 5 + #define IDEV_RNC_LLHANG_ENABLED 6 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -308,12 +309,7 @@ static inline void sci_remote_device_decrement_request_count(struct isci_remote_ idev->started_request_count--; } -static inline void isci_dev_set_hang_detection_timeout( - struct isci_remote_device *idev, - u32 timeout) -{ - sci_port_set_hang_detection_timeout(idev->owning_port, timeout); -} +void isci_dev_set_hang_detection_timeout(struct isci_remote_device *idev, u32 timeout); enum sci_status sci_remote_device_frame_handler( struct isci_remote_device *idev, diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 2ac9260..48565de 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -615,8 +615,7 @@ enum sci_status sci_remote_node_context_suspend( if ((suspend_reason == SCI_SW_SUSPEND_NORMAL) || (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT)) { - if ((suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT) - && dev_is_sata(idev->domain_dev)) + if (suspend_reason == SCI_SW_SUSPEND_LINKHANG_DETECT) isci_dev_set_hang_detection_timeout(idev, 0x00000001); sci_remote_device_post_request( -- cgit v1.1 From 08c031e4e3294a66a64074e12482abda846dd39c Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:00 -0800 Subject: isci: Make sure all TCs are terminated and cleaned in LUN reset. In the libsas error path, SATA disks require extra handling in libata to recover operation. However, libsas expects to be able to immediately recover all outstanding I/O once the error handler escalation stops. This patch fixes the condition where the libata error handler is scheduled for operation but libsas has already deleted the outstanding sas_tasks. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/task.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 222fb0d..5d738fd 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -439,16 +439,18 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) goto out; } + /* Suspend the RNC, kill all TCs */ + if (isci_remote_device_suspend_terminate(ihost, idev, NULL) + != SCI_SUCCESS) { + /* The suspend/terminate only fails if isci_get_device fails */ + ret = TMF_RESP_FUNC_FAILED; + goto out; + } + /* All pending I/Os have been terminated and cleaned up. */ if (dev_is_sata(dev)) { sas_ata_schedule_reset(dev); ret = TMF_RESP_FUNC_COMPLETE; } else { - /* Suspend the RNC, kill all TCs */ - if (isci_remote_device_suspend_terminate(ihost, idev, NULL) - != SCI_SUCCESS) { - ret = TMF_RESP_FUNC_FAILED; - goto out; - } /* Send the task management part of the reset. */ ret = isci_task_send_lu_reset_sas(ihost, idev, lun); } -- cgit v1.1 From 31a38ef0a5ad12dbe262ca55d0a905657be55a8d Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:01 -0800 Subject: isci: Implement waiting for suspend in the abort path. In order to prevent a device from receiving an I/O request while still in an RNC suspending or resuming state (and therefore failing that I/O back to libsas with a reset required status) wait for the RNC state change before proceding in the abort path. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 44 ++++++++++++++++++++++++--------- drivers/scsi/isci/remote_device.h | 6 ++--- drivers/scsi/isci/remote_node_context.c | 21 ++++++++++++++++ drivers/scsi/isci/remote_node_context.h | 3 +++ drivers/scsi/isci/task.c | 14 +++++------ 5 files changed, 66 insertions(+), 22 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 86aca11..acc94a4 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -137,6 +137,14 @@ static enum sci_status sci_remote_device_terminate_reqs_checkabort( return status; } +static bool isci_compare_suspendcount( + struct isci_remote_device *idev, + u32 localcount) +{ + smp_rmb(); + return localcount != idev->rnc.suspend_count; +} + enum sci_status isci_remote_device_terminate_requests( struct isci_host *ihost, struct isci_remote_device *idev, @@ -144,31 +152,44 @@ enum sci_status isci_remote_device_terminate_requests( { enum sci_status status = SCI_SUCCESS; unsigned long flags; + u32 rnc_suspend_count; spin_lock_irqsave(&ihost->scic_lock, flags); + if (isci_get_device(idev) == NULL) { dev_dbg(&ihost->pdev->dev, "%s: failed isci_get_device(idev=%p)\n", __func__, idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); status = SCI_FAILURE; } else { + /* If already suspended, don't wait for another suspension. */ + smp_rmb(); + rnc_suspend_count + = sci_remote_node_context_is_suspended(&idev->rnc) + ? 0 : idev->rnc.suspend_count; + dev_dbg(&ihost->pdev->dev, "%s: idev=%p, ireq=%p; started_request_count=%d, " + "rnc_suspend_count=%d, rnc.suspend_count=%d" "about to wait\n", - __func__, idev, ireq, idev->started_request_count); + __func__, idev, ireq, idev->started_request_count, + rnc_suspend_count, idev->rnc.suspend_count); if (ireq) { /* Terminate a specific TC. */ sci_remote_device_terminate_req(ihost, idev, 0, ireq); spin_unlock_irqrestore(&ihost->scic_lock, flags); - wait_event(ihost->eventq, !test_bit(IREQ_ACTIVE, - &ireq->flags)); - + wait_event(ihost->eventq, + (isci_compare_suspendcount(idev, + rnc_suspend_count) + && !test_bit(IREQ_ACTIVE, &ireq->flags))); } else { /* Terminate all TCs. */ sci_remote_device_terminate_requests(idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); wait_event(ihost->eventq, - idev->started_request_count == 0); + (isci_compare_suspendcount(idev, + rnc_suspend_count) + && idev->started_request_count == 0)); } dev_dbg(&ihost->pdev->dev, "%s: idev=%p, wait done\n", __func__, idev); @@ -1234,19 +1255,20 @@ enum sci_status sci_remote_device_resume( return status; } -enum sci_status isci_remote_device_resume( +enum sci_status isci_remote_device_resume_from_abort( struct isci_host *ihost, - struct isci_remote_device *idev, - scics_sds_remote_node_context_callback cb_fn, - void *cb_p) + struct isci_remote_device *idev) { unsigned long flags; enum sci_status status; spin_lock_irqsave(&ihost->scic_lock, flags); - status = sci_remote_device_resume(idev, cb_fn, cb_p); + /* Preserve any current resume callbacks, for instance from other + * resumptions. + */ + status = sci_remote_device_resume(idev, idev->rnc.user_callback, + idev->rnc.user_cookie); spin_unlock_irqrestore(&ihost->scic_lock, flags); - return status; } /** diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index ef563e5..d1d1892 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -357,11 +357,9 @@ enum sci_status sci_remote_device_resume( scics_sds_remote_node_context_callback cb_fn, void *cb_p); -enum sci_status isci_remote_device_resume( +enum sci_status isci_remote_device_resume_from_abort( struct isci_host *ihost, - struct isci_remote_device *idev, - scics_sds_remote_node_context_callback cb_fn, - void *cb_p); + struct isci_remote_device *idev); enum sci_status isci_remote_device_reset( struct isci_host *ihost, diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 48565de..77c8b51 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -90,6 +90,15 @@ bool sci_remote_node_context_is_ready( return false; } +bool sci_remote_node_context_is_suspended(struct sci_remote_node_context *sci_rnc) +{ + u32 current_state = sci_rnc->sm.current_state_id; + + if (current_state == SCI_RNC_TX_RX_SUSPENDED) + return true; + return false; +} + static union scu_remote_node_context *sci_rnc_by_id(struct isci_host *ihost, u16 id) { if (id < ihost->remote_node_entries && @@ -339,6 +348,13 @@ static void sci_remote_node_context_tx_rx_suspended_state_enter(struct sci_base_ struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); struct isci_remote_device *idev = rnc_to_dev(rnc); struct isci_host *ihost = idev->owning_port->owning_controller; + u32 new_count = rnc->suspend_count + 1; + + if (new_count == 0) + rnc->suspend_count = 1; + else + rnc->suspend_count = new_count; + smp_wmb(); /* Terminate outstanding requests pending abort. */ sci_remote_device_abort_requests_pending_abort(idev); @@ -634,6 +650,11 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s enum scis_sds_remote_node_context_states state; state = sci_rnc->sm.current_state_id; + dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + "%s: state %s, cb_fn = %p, cb_p = %p; dest_state = %d\n", + __func__, rnc_state_name(state), cb_fn, cb_p, + sci_rnc->destination_state); + switch (state) { case SCI_RNC_INITIAL: if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 9eee304..c61c02e 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -170,6 +170,7 @@ struct sci_remote_node_context { */ u32 suspend_type; enum sci_remote_node_suspension_reasons suspend_reason; + u32 suspend_count; /** * This field is true if the remote node context is resuming from its current @@ -203,6 +204,8 @@ void sci_remote_node_context_construct(struct sci_remote_node_context *rnc, bool sci_remote_node_context_is_ready( struct sci_remote_node_context *sci_rnc); +bool sci_remote_node_context_is_suspended(struct sci_remote_node_context *sci_rnc); + enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_context *sci_rnc, u32 event_code); enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context *sci_rnc, diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 5d738fd..c1c6dd0 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -317,11 +317,11 @@ static int isci_task_execute_tmf(struct isci_host *ihost, spin_unlock_irqrestore(&ihost->scic_lock, flags); goto err_tci; } - /* The RNC must be unsuspended before the TMF can get a response. */ - sci_remote_device_resume(idev, NULL, NULL); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* The RNC must be unsuspended before the TMF can get a response. */ + isci_remote_device_resume_from_abort(ihost, idev); + /* Wait for the TMF to complete, or a timeout. */ timeleft = wait_for_completion_timeout(&completion, msecs_to_jiffies(timeout_ms)); @@ -554,11 +554,11 @@ int isci_task_abort_task(struct sas_task *task) sas_protocol_ata(task->task_proto) || test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { - /* No task to send, so explicitly resume the device here */ - sci_remote_device_resume(idev, NULL, NULL); - spin_unlock_irqrestore(&ihost->scic_lock, flags); + /* No task to send, so explicitly resume the device here */ + isci_remote_device_resume_from_abort(ihost, idev); + dev_warn(&ihost->pdev->dev, "%s: %s request" " or complete_in_target (%d), thus no TMF\n", @@ -757,7 +757,7 @@ static int isci_reset_device(struct isci_host *ihost, reset_stat = sas_phy_reset(phy, !dev_is_sata(dev)); /* Explicitly resume the RNC here, since there was no task sent. */ - isci_remote_device_resume(ihost, idev, NULL, NULL); + isci_remote_device_resume_from_abort(ihost, idev); dev_dbg(&ihost->pdev->dev, "%s: idev %p complete, reset_stat=%d.\n", __func__, idev, reset_stat); -- cgit v1.1 From 0c3ce38f1bc8b6a6d8df0959e3c0dece31f9350c Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:02 -0800 Subject: isci: When in the abort path, defeat other resume calls until done. Completion of I/Os during the one of the abort path interface calls from libsas can drive remote device state changes and the resumption of the device RNC. This is a problem when the abort path is attempting to cleanup outstanding I/O at the same time - the resumption can prevent the termination from occuring correctly. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 2 + drivers/scsi/isci/remote_device.h | 1 + drivers/scsi/isci/remote_node_context.c | 126 ++++++++++++++++++++------------ 3 files changed, 83 insertions(+), 46 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index acc94a4..d1c2a22 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1266,6 +1266,7 @@ enum sci_status isci_remote_device_resume_from_abort( /* Preserve any current resume callbacks, for instance from other * resumptions. */ + clear_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags); status = sci_remote_device_resume(idev, idev->rnc.user_callback, idev->rnc.user_cookie); spin_unlock_irqrestore(&ihost->scic_lock, flags); @@ -1501,6 +1502,7 @@ enum sci_status isci_remote_device_suspend_terminate( /* Put the device into suspension. */ spin_lock_irqsave(&ihost->scic_lock, flags); + set_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags); sci_remote_device_suspend(idev, SCI_SW_SUSPEND_LINKHANG_DETECT); spin_unlock_irqrestore(&ihost->scic_lock, flags); diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index d1d1892..53564c3 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -86,6 +86,7 @@ struct isci_remote_device { #define IDEV_IO_READY 4 #define IDEV_IO_NCQERROR 5 #define IDEV_RNC_LLHANG_ENABLED 6 + #define IDEV_ABORT_PATH_ACTIVE 7 unsigned long flags; struct kref kref; struct isci_port *isci_port; diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 77c8b51..faeae95 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -161,6 +161,14 @@ static void sci_remote_node_context_construct_buffer(struct sci_remote_node_cont rnc->ssp.oaf_more_compatibility_features = 0; } +static void sci_remote_node_context_save_cbparams( + struct sci_remote_node_context *sci_rnc, + scics_sds_remote_node_context_callback callback, + void *callback_parameter) +{ + sci_rnc->user_callback = callback; + sci_rnc->user_cookie = callback_parameter; +} /** * * @sci_rnc: @@ -179,10 +187,9 @@ static void sci_remote_node_context_setup_to_resume( { if (sci_rnc->destination_state != RNC_DEST_FINAL) { sci_rnc->destination_state = dest_param; - if (callback != NULL) { - sci_rnc->user_callback = callback; - sci_rnc->user_cookie = callback_parameter; - } + if (callback != NULL) + sci_remote_node_context_save_cbparams( + sci_rnc, callback, callback_parameter); } } @@ -648,67 +655,94 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s void *cb_p) { enum scis_sds_remote_node_context_states state; + struct isci_remote_device *idev = rnc_to_dev(sci_rnc); state = sci_rnc->sm.current_state_id; - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), - "%s: state %s, cb_fn = %p, cb_p = %p; dest_state = %d\n", - __func__, rnc_state_name(state), cb_fn, cb_p, - sci_rnc->destination_state); + dev_dbg(scirdev_to_dev(idev), + "%s: state %s, cb_fn = %p, cb_p = %p; dest_state = %d; " + "dev resume path %s\n", + __func__, rnc_state_name(state), cb_fn, cb_p, + sci_rnc->destination_state, + test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags) + ? "" : ""); switch (state) { case SCI_RNC_INITIAL: if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) return SCI_FAILURE_INVALID_STATE; - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p, - RNC_DEST_READY); - sci_remote_node_context_construct_buffer(sci_rnc); - sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING); + if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) + sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, + cb_p); + else { + sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, + cb_p, RNC_DEST_READY); + sci_remote_node_context_construct_buffer(sci_rnc); + sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING); + } return SCI_SUCCESS; + case SCI_RNC_POSTING: case SCI_RNC_INVALIDATING: case SCI_RNC_RESUMING: - /* We are still waiting to post when a resume was requested. */ - switch (sci_rnc->destination_state) { - case RNC_DEST_SUSPENDED: - case RNC_DEST_SUSPENDED_RESUME: - /* Previously waiting to suspend after posting. Now - * continue onto resumption. + if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) + sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, + cb_p); + else { + /* We are still waiting to post when a resume was + * requested. */ - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_SUSPENDED_RESUME); - break; - default: - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_READY); - break; + switch (sci_rnc->destination_state) { + case RNC_DEST_SUSPENDED: + case RNC_DEST_SUSPENDED_RESUME: + /* Previously waiting to suspend after posting. + * Now continue onto resumption. + */ + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_SUSPENDED_RESUME); + break; + default: + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); + break; + } } return SCI_SUCCESS; + case SCI_RNC_TX_SUSPENDED: - case SCI_RNC_TX_RX_SUSPENDED: { - struct isci_remote_device *idev = rnc_to_dev(sci_rnc); - struct domain_device *dev = idev->domain_dev; - - /* If this is an expander attached SATA device we must - * invalidate and repost the RNC since this is the only way - * to clear the TCi to NCQ tag mapping table for the RNi. - * All other device types we can just resume. - */ - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p, - RNC_DEST_READY); + case SCI_RNC_TX_RX_SUSPENDED: + if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) + sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, + cb_p); + else { + struct domain_device *dev = idev->domain_dev; + /* If this is an expander attached SATA device we must + * invalidate and repost the RNC since this is the only + * way to clear the TCi to NCQ tag mapping table for + * the RNi. All other device types we can just resume. + */ + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, RNC_DEST_READY); - if (dev_is_sata(dev) && dev->parent) - sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); - else - sci_change_state(&sci_rnc->sm, SCI_RNC_RESUMING); + if (dev_is_sata(dev) && dev->parent) + sci_change_state(&sci_rnc->sm, + SCI_RNC_INVALIDATING); + else + sci_change_state(&sci_rnc->sm, + SCI_RNC_RESUMING); + } return SCI_SUCCESS; - } + case SCI_RNC_AWAIT_SUSPENSION: - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_SUSPENDED_RESUME); + if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) + sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, + cb_p); + else + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_SUSPENDED_RESUME); return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), -- cgit v1.1 From 033d19d298b4245da2d3d6c795ea97e419f9ac61 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:03 -0800 Subject: isci: Callbacks to libsas occur under scic_lock and are synchronized. This patch changes the callback mechanism to libsas to only occur while the scic_lock is held; the abort path cleanup of I/Os also checks to make sure IREQ_ABORT_PATH_ACTIVE is clear before proceding. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 10 +++------ drivers/scsi/isci/remote_device.c | 43 +++++++++++++++++++++++++++++++++------ 2 files changed, 40 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 25d537e..53c3ad6 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1105,8 +1105,6 @@ void isci_host_completion_routine(unsigned long data) list_splice_init(&ihost->requests_to_complete, &completed_request_list); - spin_unlock_irq(&ihost->scic_lock); - /* Process any completions in the list. */ list_for_each_safe(current_position, next_position, &completed_request_list) { @@ -1115,7 +1113,6 @@ void isci_host_completion_routine(unsigned long data) completed_node); task = isci_request_access_task(request); - /* Return the task to libsas */ if (task != NULL) { @@ -1141,11 +1138,12 @@ void isci_host_completion_routine(unsigned long data) } } } + if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags)) + wake_up_all(&ihost->eventq); - spin_lock_irq(&ihost->scic_lock); isci_free_tag(ihost, request->io_tag); - spin_unlock_irq(&ihost->scic_lock); } + spin_unlock_irq(&ihost->scic_lock); /* the coalesence timeout doubles at each encoding step, so * update it based on the ilog2 value of the outstanding requests @@ -2703,8 +2701,6 @@ enum sci_status sci_controller_complete_io(struct isci_host *ihost, index = ISCI_TAG_TCI(ireq->io_tag); clear_bit(IREQ_ACTIVE, &ireq->flags); - if (test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) - wake_up_all(&ihost->eventq); return SCI_SUCCESS; default: dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n", diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index d1c2a22..21a9800 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -145,6 +145,39 @@ static bool isci_compare_suspendcount( return localcount != idev->rnc.suspend_count; } +static bool isci_check_reqterm( + struct isci_host *ihost, + struct isci_remote_device *idev, + struct isci_request *ireq, + u32 localcount) +{ + unsigned long flags; + bool res; + + spin_lock_irqsave(&ihost->scic_lock, flags); + res = isci_compare_suspendcount(idev, localcount) + && !test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + + return res; +} + +static bool isci_check_devempty( + struct isci_host *ihost, + struct isci_remote_device *idev, + u32 localcount) +{ + unsigned long flags; + bool res; + + spin_lock_irqsave(&ihost->scic_lock, flags); + res = isci_compare_suspendcount(idev, localcount) + && idev->started_request_count == 0; + spin_unlock_irqrestore(&ihost->scic_lock, flags); + + return res; +} + enum sci_status isci_remote_device_terminate_requests( struct isci_host *ihost, struct isci_remote_device *idev, @@ -179,17 +212,15 @@ enum sci_status isci_remote_device_terminate_requests( sci_remote_device_terminate_req(ihost, idev, 0, ireq); spin_unlock_irqrestore(&ihost->scic_lock, flags); wait_event(ihost->eventq, - (isci_compare_suspendcount(idev, - rnc_suspend_count) - && !test_bit(IREQ_ACTIVE, &ireq->flags))); + isci_check_reqterm(ihost, idev, ireq, + rnc_suspend_count)); } else { /* Terminate all TCs. */ sci_remote_device_terminate_requests(idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); wait_event(ihost->eventq, - (isci_compare_suspendcount(idev, - rnc_suspend_count) - && idev->started_request_count == 0)); + isci_check_devempty(ihost, idev, + rnc_suspend_count)); } dev_dbg(&ihost->pdev->dev, "%s: idev=%p, wait done\n", __func__, idev); -- cgit v1.1 From 621120ca56850249554996c94efe75f8200a2cc0 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:03 -0800 Subject: isci: Manage tag releases differently when aborting tasks. When an individual request is being terminated, the request's tag is managed in the terminate function. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 3 ++- drivers/scsi/isci/remote_device.c | 11 +++++++---- drivers/scsi/isci/request.h | 1 + drivers/scsi/isci/task.c | 3 ++- 4 files changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index 53c3ad6..ef2790f 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1141,7 +1141,8 @@ void isci_host_completion_routine(unsigned long data) if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags)) wake_up_all(&ihost->eventq); - isci_free_tag(ihost, request->io_tag); + if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &request->flags)) + isci_free_tag(ihost, request->io_tag); } spin_unlock_irq(&ihost->scic_lock); diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 21a9800..adeda64 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -104,15 +104,15 @@ static enum sci_status sci_remote_device_terminate_req( int check_abort, struct isci_request *ireq) { - dev_dbg(&ihost->pdev->dev, - "%s: idev=%p; flags=%lx; req=%p; req target=%p\n", - __func__, idev, idev->flags, ireq, ireq->target_device); - if (!test_bit(IREQ_ACTIVE, &ireq->flags) || (ireq->target_device != idev) || (check_abort && !test_bit(IREQ_PENDING_ABORT, &ireq->flags))) return SCI_SUCCESS; + dev_dbg(&ihost->pdev->dev, + "%s: idev=%p; flags=%lx; req=%p; req target=%p\n", + __func__, idev, idev->flags, ireq, ireq->target_device); + set_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags); return sci_controller_terminate_request(ihost, idev, ireq); @@ -209,11 +209,14 @@ enum sci_status isci_remote_device_terminate_requests( rnc_suspend_count, idev->rnc.suspend_count); if (ireq) { /* Terminate a specific TC. */ + set_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags); sci_remote_device_terminate_req(ihost, idev, 0, ireq); spin_unlock_irqrestore(&ihost->scic_lock, flags); wait_event(ihost->eventq, isci_check_reqterm(ihost, idev, ireq, rnc_suspend_count)); + clear_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags); + isci_free_tag(ihost, ireq->io_tag); } else { /* Terminate all TCs. */ sci_remote_device_terminate_requests(idev); diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index d12e975..1a65157 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -87,6 +87,7 @@ struct isci_request { #define IREQ_PENDING_ABORT 4 /* Set == device was not suspended yet */ #define IREQ_TC_ABORT_POSTED 5 #define IREQ_ABORT_PATH_ACTIVE 6 + #define IREQ_NO_AUTO_FREE_TAG 7 /* Set when being explicitly managed */ unsigned long flags; /* XXX kill ttype and ttype_ptr, allocate full sas_task */ union ttype_ptr_union { diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index c1c6dd0..e798c6a 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -719,7 +719,8 @@ isci_task_request_complete(struct isci_host *ihost, */ set_bit(IREQ_TERMINATED, &ireq->flags); - isci_free_tag(ihost, ireq->io_tag); + if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags)) + isci_free_tag(ihost, ireq->io_tag); /* The task management part completes last. */ if (tmf_complete) -- cgit v1.1 From d76689e46c8b2180c08575adc830cfda890ceb87 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:04 -0800 Subject: isci: Fix RNC suspend call for SCI_RESUMING state. Instead of immediately transitioning to the SCI_RNC_AWAIT_SUSPENSION state, handle the SCI_RNC_RESUMING suspend transition from the SCI_RNC_READY state like the SCI_RNC_INVALIDATING --> SCI_RNC_POSTING transitions do now, by setting the destination state for the entry into the READY state. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_node_context.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index faeae95..b698081 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -321,8 +321,6 @@ static void sci_remote_node_context_ready_state_enter(struct sci_base_state_mach { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); enum sci_remote_node_context_destination_state dest_select; - scics_sds_remote_node_context_callback usr_cb = rnc->user_callback; - void *usr_param = rnc->user_cookie; int tell_user = 1; dest_select = rnc->destination_state; @@ -334,12 +332,10 @@ static void sci_remote_node_context_ready_state_enter(struct sci_base_state_mach rnc, rnc->suspend_reason, SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT); - if (dest_select == RNC_DEST_SUSPENDED_RESUME) { - sci_remote_node_context_resume(rnc, usr_cb, usr_param); + if (dest_select == RNC_DEST_SUSPENDED_RESUME) tell_user = 0; /* Wait until ready again. */ - } } - if (tell_user && rnc->user_callback) + if (tell_user) sci_remote_node_context_notify_user(rnc); } @@ -584,8 +580,6 @@ enum sci_status sci_remote_node_context_suspend( dest_param = sci_rnc->destination_state; switch (state) { - case SCI_RNC_RESUMING: - break; /* The RNC has been posted, so start the suspend. */ case SCI_RNC_READY: break; case SCI_RNC_INVALIDATING: @@ -596,6 +590,8 @@ enum sci_status sci_remote_node_context_suspend( return SCI_FAILURE_INVALID_STATE; } /* Fall through and handle like SCI_RNC_POSTING */ + case SCI_RNC_RESUMING: + /* Fall through and handle like SCI_RNC_POSTING */ case SCI_RNC_POSTING: /* Set the destination state to AWAIT - this signals the * entry into the SCI_RNC_READY state that a suspension -- cgit v1.1 From 0cce165e2814bc8c08ab229db5e17013971dced7 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:04 -0800 Subject: isci: Wait for RNC resumption before leaving the abort path. In the case of TMF execution, or device resets, wait for the RNC to fully resume before returning to the caller. This ensures that the remote device will not fail I/O requests while waiting for the RNC resumption to complete. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 52 +++++++++++++++++++++++++++++++++++++-- drivers/scsi/isci/remote_device.h | 3 +++ 2 files changed, 53 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index adeda64..37e9bde 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1289,6 +1289,48 @@ enum sci_status sci_remote_device_resume( return status; } +static void isci_remote_device_resume_from_abort_complete(void *cbparam) +{ + struct isci_remote_device *idev = cbparam; + struct isci_host *ihost = idev->owning_port->owning_controller; + scics_sds_remote_node_context_callback abort_resume_cb = + idev->abort_resume_cb; + + dev_dbg(scirdev_to_dev(idev), "%s: passing-along resume: %p\n", + __func__, abort_resume_cb); + + if (abort_resume_cb != NULL) { + idev->abort_resume_cb = NULL; + abort_resume_cb(idev->abort_resume_cbparam); + } + clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); + wake_up(&ihost->eventq); +} + + +void isci_remote_device_wait_for_resume_from_abort( + struct isci_host *ihost, + struct isci_remote_device *idev) +{ + dev_dbg(scirdev_to_dev(idev), "%s: starting resume wait: %p\n", + __func__, idev); + + #define MAX_RESUME_MSECS 5 + if (!wait_event_timeout(ihost->eventq, + (!test_bit(IDEV_ABORT_PATH_RESUME_PENDING, + &idev->flags) + || test_bit(IDEV_STOP_PENDING, &idev->flags)), + msecs_to_jiffies(MAX_RESUME_MSECS))) { + + dev_warn(scirdev_to_dev(idev), "%s: #### Timeout waiting for " + "resume: %p\n", __func__, idev); + } + clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); + + dev_dbg(scirdev_to_dev(idev), "%s: resume wait done: %p\n", + __func__, idev); +} + enum sci_status isci_remote_device_resume_from_abort( struct isci_host *ihost, struct isci_remote_device *idev) @@ -1300,12 +1342,18 @@ enum sci_status isci_remote_device_resume_from_abort( /* Preserve any current resume callbacks, for instance from other * resumptions. */ + idev->abort_resume_cb = idev->rnc.user_callback; + idev->abort_resume_cbparam = idev->rnc.user_cookie; + set_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); clear_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags); - status = sci_remote_device_resume(idev, idev->rnc.user_callback, - idev->rnc.user_cookie); + status = sci_remote_device_resume( + idev, isci_remote_device_resume_from_abort_complete, + idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); + isci_remote_device_wait_for_resume_from_abort(ihost, idev); return status; } + /** * sci_remote_device_start() - This method will start the supplied remote * device. This method enables normal IO requests to flow through to the diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 53564c3..ff34c4e 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -87,6 +87,7 @@ struct isci_remote_device { #define IDEV_IO_NCQERROR 5 #define IDEV_RNC_LLHANG_ENABLED 6 #define IDEV_ABORT_PATH_ACTIVE 7 + #define IDEV_ABORT_PATH_RESUME_PENDING 8 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -101,6 +102,8 @@ struct isci_remote_device { u32 started_request_count; struct isci_request *working_request; u32 not_ready_reason; + scics_sds_remote_node_context_callback abort_resume_cb; + void *abort_resume_cbparam; }; #define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000 -- cgit v1.1 From 1db79b3e784bffe7e00f9462a5c3441746e48632 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:05 -0800 Subject: isci: Directly control IREQ_ABORT_PATH_ACTIVE when completing TMFs. TMF requests, unlike normal I/O requests, need to handle I/O management conditions in the completion function because TMFs are not handled in the completion tasklet. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/task.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index e798c6a..084f8f7 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -719,6 +719,9 @@ isci_task_request_complete(struct isci_host *ihost, */ set_bit(IREQ_TERMINATED, &ireq->flags); + if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) + wake_up_all(&ihost->eventq); + if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags)) isci_free_tag(ihost, ireq->io_tag); -- cgit v1.1 From 28de92bef0fb0c3953aa73d31a961422ef900e6a Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:06 -0800 Subject: isci: Add protocol indicator for TMF requests. Requests contructed as task management requests need to have the protocol indicator set so the completion decode can observe any RNC suspension conditions. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/request.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 432585b..415d5f5 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -3130,6 +3130,12 @@ enum sci_status sci_task_request_construct(struct isci_host *ihost, if (dev->dev_type == SAS_END_DEV || dev_is_sata(dev)) { set_bit(IREQ_TMF, &ireq->flags); memset(ireq->tc, 0, sizeof(struct scu_task_context)); + + /* Set the protocol indicator. */ + if (dev_is_sata(dev)) + ireq->protocol = SAS_PROTOCOL_STP; + else + ireq->protocol = SAS_PROTOCOL_SSP; } else status = SCI_FAILURE_UNSUPPORTED_PROTOCOL; -- cgit v1.1 From 8c731888bf1be8d15d587ab1b4da80553302e653 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:06 -0800 Subject: isci: Added timeouts to RNC suspensions in the abort path. This change adds timeouts to the RNC suspension wait. It makes the suspend and resume timeouts the same. The previous resume timeout of 5 ms was too short, and timeouts were seen in resumptions of devices in the abort task/LUN reset path - which would receive an RNC resumed message within a tenth of a second later. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 58 +++++++++++++++++++++++++++++---- drivers/scsi/isci/remote_node_context.c | 8 ++--- 2 files changed, 55 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 37e9bde..be9f0e0 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -207,23 +207,67 @@ enum sci_status isci_remote_device_terminate_requests( "about to wait\n", __func__, idev, ireq, idev->started_request_count, rnc_suspend_count, idev->rnc.suspend_count); + + #define MAX_SUSPEND_MSECS 10000 if (ireq) { /* Terminate a specific TC. */ set_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags); sci_remote_device_terminate_req(ihost, idev, 0, ireq); spin_unlock_irqrestore(&ihost->scic_lock, flags); - wait_event(ihost->eventq, - isci_check_reqterm(ihost, idev, ireq, - rnc_suspend_count)); + if (!wait_event_timeout(ihost->eventq, + isci_check_reqterm(ihost, idev, ireq, + rnc_suspend_count), + msecs_to_jiffies(MAX_SUSPEND_MSECS))) { + + dev_warn(&ihost->pdev->dev, "%s host%d timeout single\n", + __func__, ihost->id); + dev_dbg(&ihost->pdev->dev, + "%s: ******* Timeout waiting for " + "suspend; idev=%p, current state %s; " + "started_request_count=%d, flags=%lx\n\t" + "rnc_suspend_count=%d, rnc.suspend_count=%d " + "RNC: current state %s, current " + "suspend_type %x dest state %d;\n" + "ireq=%p, ireq->flags = %lx\n", + __func__, idev, + dev_state_name(idev->sm.current_state_id), + idev->started_request_count, idev->flags, + rnc_suspend_count, idev->rnc.suspend_count, + rnc_state_name(idev->rnc.sm.current_state_id), + idev->rnc.suspend_type, + idev->rnc.destination_state, + ireq, ireq->flags); + } clear_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags); isci_free_tag(ihost, ireq->io_tag); } else { /* Terminate all TCs. */ sci_remote_device_terminate_requests(idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); - wait_event(ihost->eventq, - isci_check_devempty(ihost, idev, - rnc_suspend_count)); + if (!wait_event_timeout(ihost->eventq, + isci_check_devempty(ihost, idev, + rnc_suspend_count), + msecs_to_jiffies(MAX_SUSPEND_MSECS))) { + + dev_warn(&ihost->pdev->dev, "%s host%d timeout all\n", + __func__, ihost->id); + dev_dbg(&ihost->pdev->dev, + "%s: ******* Timeout waiting for " + "suspend; idev=%p, current state %s; " + "started_request_count=%d, flags=%lx\n\t" + "rnc_suspend_count=%d, " + "RNC: current state %s, " + "rnc.suspend_count=%d, current " + "suspend_type %x dest state %d\n", + __func__, idev, + dev_state_name(idev->sm.current_state_id), + idev->started_request_count, idev->flags, + rnc_suspend_count, + rnc_state_name(idev->rnc.sm.current_state_id), + idev->rnc.suspend_count, + idev->rnc.suspend_type, + idev->rnc.destination_state); + } } dev_dbg(&ihost->pdev->dev, "%s: idev=%p, wait done\n", __func__, idev); @@ -1315,7 +1359,7 @@ void isci_remote_device_wait_for_resume_from_abort( dev_dbg(scirdev_to_dev(idev), "%s: starting resume wait: %p\n", __func__, idev); - #define MAX_RESUME_MSECS 5 + #define MAX_RESUME_MSECS 10000 if (!wait_event_timeout(ihost->eventq, (!test_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index b698081..a0a62e3 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -445,7 +445,7 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: /* We really dont care if the hardware is going to suspend * the device since it's being invalidated anyway */ - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), "%s: SCIC Remote Node Context 0x%p was " "suspeneded by hardware while being " "invalidated.\n", __func__, sci_rnc); @@ -464,7 +464,7 @@ enum sci_status sci_remote_node_context_event_handler(struct sci_remote_node_con case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: /* We really dont care if the hardware is going to suspend * the device since it's being resumed anyway */ - dev_dbg(scirdev_to_dev(rnc_to_dev(sci_rnc)), + dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), "%s: SCIC Remote Node Context 0x%p was " "suspeneded by hardware while being resumed.\n", __func__, sci_rnc); @@ -568,9 +568,9 @@ enum sci_status sci_remote_node_context_suspend( RNC_DEST_UNSPECIFIED; dev_dbg(scirdev_to_dev(idev), - "%s: current state %d, current suspend_type %x dest state %d," + "%s: current state %s, current suspend_type %x dest state %d," " arg suspend_reason %d, arg suspend_type %x", - __func__, state, sci_rnc->suspend_type, + __func__, rnc_state_name(state), sci_rnc->suspend_type, sci_rnc->destination_state, suspend_reason, suspend_type); -- cgit v1.1 From c5457a82a404db3c447df22e6425c5c140c4bee1 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:07 -0800 Subject: isci: Change the phy control and link reset interface for HW reasons. There is an apparent HW lockup caused when the PE is disabled while there is an outstanding TC in progress. This change puts the link into OOB to force the TC to end before the PE is disabled. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/phy.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/isci/phy.c b/drivers/scsi/isci/phy.c index 85b26ac..18f43d4 100644 --- a/drivers/scsi/isci/phy.c +++ b/drivers/scsi/isci/phy.c @@ -1442,12 +1442,14 @@ int isci_phy_control(struct asd_sas_phy *sas_phy, switch (func) { case PHY_FUNC_DISABLE: spin_lock_irqsave(&ihost->scic_lock, flags); + scu_link_layer_start_oob(iphy); sci_phy_stop(iphy); spin_unlock_irqrestore(&ihost->scic_lock, flags); break; case PHY_FUNC_LINK_RESET: spin_lock_irqsave(&ihost->scic_lock, flags); + scu_link_layer_start_oob(iphy); sci_phy_stop(iphy); sci_phy_start(iphy); spin_unlock_irqrestore(&ihost->scic_lock, flags); -- cgit v1.1 From 1f05388933cb6e57ed9e51768c194ff145002f3b Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:08 -0800 Subject: isci: Don't wait for an RNC suspend if it's being destroyed. Make sure that the wait for suspend can handle the RNC destruction case. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 20 ++++++++++++++++---- drivers/scsi/isci/remote_node_context.c | 5 +++++ drivers/scsi/isci/remote_node_context.h | 7 +++++++ 3 files changed, 28 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index be9f0e0..68ab4fb 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -142,7 +142,12 @@ static bool isci_compare_suspendcount( u32 localcount) { smp_rmb(); - return localcount != idev->rnc.suspend_count; + + /* Check for a change in the suspend count, or the RNC + * being destroyed. + */ + return (localcount != idev->rnc.suspend_count) + || sci_remote_node_context_is_being_destroyed(&idev->rnc); } static bool isci_check_reqterm( @@ -1380,7 +1385,8 @@ enum sci_status isci_remote_device_resume_from_abort( struct isci_remote_device *idev) { unsigned long flags; - enum sci_status status; + enum sci_status status = SCI_SUCCESS; + int destroyed; spin_lock_irqsave(&ihost->scic_lock, flags); /* Preserve any current resume callbacks, for instance from other @@ -1390,11 +1396,17 @@ enum sci_status isci_remote_device_resume_from_abort( idev->abort_resume_cbparam = idev->rnc.user_cookie; set_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); clear_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags); - status = sci_remote_device_resume( + destroyed = sci_remote_node_context_is_being_destroyed(&idev->rnc); + if (!destroyed) + status = sci_remote_device_resume( idev, isci_remote_device_resume_from_abort_complete, idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); - isci_remote_device_wait_for_resume_from_abort(ihost, idev); + if (!destroyed) + isci_remote_device_wait_for_resume_from_abort(ihost, idev); + else + clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); + return status; } diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index a0a62e3..920c2bb 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -270,6 +270,8 @@ static void sci_remote_node_context_invalidate_context_buffer(struct sci_remote_ static void sci_remote_node_context_initial_state_enter(struct sci_base_state_machine *sm) { struct sci_remote_node_context *rnc = container_of(sm, typeof(*rnc), sm); + struct isci_remote_device *idev = rnc_to_dev(rnc); + struct isci_host *ihost = idev->owning_port->owning_controller; /* Check to see if we have gotten back to the initial state because * someone requested to destroy the remote node context object. @@ -277,6 +279,9 @@ static void sci_remote_node_context_initial_state_enter(struct sci_base_state_ma if (sm->previous_state_id == SCI_RNC_INVALIDATING) { rnc->destination_state = RNC_DEST_UNSPECIFIED; sci_remote_node_context_notify_user(rnc); + + smp_wmb(); + wake_up(&ihost->eventq); } } diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index c61c02e..0d4a24d 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -226,4 +226,11 @@ enum sci_status sci_remote_node_context_start_io(struct sci_remote_node_context int sci_remote_node_context_is_safe_to_abort( struct sci_remote_node_context *sci_rnc); +static inline bool sci_remote_node_context_is_being_destroyed( + struct sci_remote_node_context *sci_rnc) +{ + return ((sci_rnc->sm.current_state_id == SCI_RNC_INVALIDATING) + && (sci_rnc->destination_state == RNC_DEST_FINAL)) + || (sci_rnc->sm.current_state_id == SCI_RNC_INITIAL); +} #endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */ -- cgit v1.1 From 87805162b6af20d2ad386a49aec13b753cca523a Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Thu, 8 Mar 2012 22:42:09 -0800 Subject: isci: Restore the ATAPI device RNC management code. The ATAPI specific and STP general RNC suspension code had been incorrectly removed from the remote device code. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 49 +++++++++++++++++++++++---------------- drivers/scsi/isci/remote_device.h | 2 ++ drivers/scsi/isci/request.c | 3 +++ 3 files changed, 34 insertions(+), 20 deletions(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 68ab4fb..48765aa 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -72,8 +72,8 @@ const char *dev_state_name(enum sci_remote_device_states state) } #undef C -static enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, - enum sci_remote_node_suspension_reasons reason) +enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, + enum sci_remote_node_suspension_reasons reason) { return sci_remote_node_context_suspend(&idev->rnc, reason, SCI_SOFTWARE_SUSPEND_EXPECTED_EVENT); @@ -565,6 +565,8 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, u32 event_code) { enum sci_status status; + struct sci_base_state_machine *sm = &idev->sm; + enum sci_remote_device_states state = sm->current_state_id; switch (scu_get_event_type(event_code)) { case SCU_EVENT_TYPE_RNC_OPS_MISC: @@ -603,6 +605,30 @@ enum sci_status sci_remote_device_event_handler(struct isci_remote_device *idev, if (status != SCI_SUCCESS) return status; + /* Decode device-specific states that may require an RNC resume during + * normal operation. When the abort path is active, these resumes are + * managed when the abort path exits. + */ + if (state == SCI_STP_DEV_ATAPI_ERROR) { + /* For ATAPI error state resume the RNC right away. */ + if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX || + scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) { + return sci_remote_node_context_resume(&idev->rnc, + atapi_remote_device_resume_done, + idev); + } + } + + if (state == SCI_STP_DEV_IDLE) { + + /* We pick up suspension events to handle specifically to this + * state. We resume the RNC right away. + */ + if (scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX || + scu_get_event_type(event_code) == SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX) + status = sci_remote_node_context_resume(&idev->rnc, NULL, NULL); + } + return status; } @@ -1137,21 +1163,6 @@ static void sci_stp_remote_device_ready_ncq_error_substate_enter(struct sci_base idev->not_ready_reason); } -static void sci_stp_remote_device_atapi_error_substate_enter( - struct sci_base_state_machine *sm) -{ - struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); - - /* This state is entered when an I/O is decoded with an error - * condition. By this point the RNC expected suspension state is set. - * The error conditions suspend the device, so unsuspend here if - * possible. - */ - sci_remote_node_context_resume(&idev->rnc, - atapi_remote_device_resume_done, - idev); -} - static void sci_smp_remote_device_ready_idle_substate_enter(struct sci_base_state_machine *sm) { struct isci_remote_device *idev = container_of(sm, typeof(*idev), sm); @@ -1202,9 +1213,7 @@ static const struct sci_base_state sci_remote_device_state_table[] = { [SCI_STP_DEV_NCQ_ERROR] = { .enter_state = sci_stp_remote_device_ready_ncq_error_substate_enter, }, - [SCI_STP_DEV_ATAPI_ERROR] = { - .enter_state = sci_stp_remote_device_atapi_error_substate_enter, - }, + [SCI_STP_DEV_ATAPI_ERROR] = { }, [SCI_STP_DEV_AWAIT_RESET] = { }, [SCI_SMP_DEV_IDLE] = { .enter_state = sci_smp_remote_device_ready_idle_substate_enter, diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index ff34c4e..7674caa 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -382,4 +382,6 @@ enum sci_status isci_remote_device_terminate_requests( struct isci_host *ihost, struct isci_remote_device *idev, struct isci_request *ireq); +enum sci_status sci_remote_device_suspend(struct isci_remote_device *idev, + enum sci_remote_node_suspension_reasons reason); #endif /* !defined(_ISCI_REMOTE_DEVICE_H_) */ diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 415d5f5..6c530e4 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2118,6 +2118,9 @@ static enum sci_status stp_request_udma_await_tc_event(struct isci_request *ireq * completion. */ if (ireq->stp.rsp.fis_type == FIS_REGD2H) { + sci_remote_device_suspend(ireq->target_device, + SCI_SW_SUSPEND_NORMAL); + ireq->scu_status = SCU_TASK_DONE_CHECK_RESPONSE; ireq->sci_status = SCI_FAILURE_IO_RESPONSE_VALID; sci_change_state(&ireq->sm, SCI_REQ_COMPLETED); -- cgit v1.1 From 397497dd61948b0d59d1d21812b93c97b0eeb2dd Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Sat, 10 Mar 2012 05:46:46 +0000 Subject: isci: Check IDEV_GONE before performing abort path operations. In the link fail path, set IDEV_GONE for every device on the domain when the last link in the port fails. In the abort path functions like isci_reset_device, make sure that there has not already been a detected domain failure with the device by checking IDEV_GONE, before performing any kind of hard reset, SMP phy control, or TMF operation. The check for IDEV_GONE makes sure that the device in the abort path really has control of the port with which it is associated. This prevents starting hard resets at incorrect times and scheduling unnecessary LUN resets for SATA devices. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/port.c | 23 ++++++++++++++++++++ drivers/scsi/isci/task.c | 55 ++++++++++++++++++++++++++++++------------------ 2 files changed, 57 insertions(+), 21 deletions(-) diff --git a/drivers/scsi/isci/port.c b/drivers/scsi/isci/port.c index da0c4e1..2fb85bf 100644 --- a/drivers/scsi/isci/port.c +++ b/drivers/scsi/isci/port.c @@ -240,9 +240,32 @@ static void isci_port_link_down(struct isci_host *isci_host, struct isci_phy *isci_phy, struct isci_port *isci_port) { + struct isci_remote_device *isci_device; + dev_dbg(&isci_host->pdev->dev, "%s: isci_port = %p\n", __func__, isci_port); + if (isci_port) { + + /* check to see if this is the last phy on this port. */ + if (isci_phy->sas_phy.port && + isci_phy->sas_phy.port->num_phys == 1) { + /* change the state for all devices on this port. The + * next task sent to this device will be returned as + * SAS_TASK_UNDELIVERED, and the scsi mid layer will + * remove the target + */ + list_for_each_entry(isci_device, + &isci_port->remote_dev_list, + node) { + dev_dbg(&isci_host->pdev->dev, + "%s: isci_device = %p\n", + __func__, isci_device); + set_bit(IDEV_GONE, &isci_device->flags); + } + } + } + /* Notify libsas of the borken link, this will trigger calls to our * isci_port_deformed and isci_dev_gone functions. */ diff --git a/drivers/scsi/isci/task.c b/drivers/scsi/isci/task.c index 084f8f7..6bc74eb 100644 --- a/drivers/scsi/isci/task.c +++ b/drivers/scsi/isci/task.c @@ -421,7 +421,7 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) struct isci_host *ihost = dev_to_ihost(dev); struct isci_remote_device *idev; unsigned long flags; - int ret; + int ret = TMF_RESP_FUNC_COMPLETE; spin_lock_irqsave(&ihost->scic_lock, flags); idev = isci_get_device(dev->lldd_dev); @@ -447,12 +447,12 @@ int isci_task_lu_reset(struct domain_device *dev, u8 *lun) goto out; } /* All pending I/Os have been terminated and cleaned up. */ - if (dev_is_sata(dev)) { - sas_ata_schedule_reset(dev); - ret = TMF_RESP_FUNC_COMPLETE; - } else { - /* Send the task management part of the reset. */ - ret = isci_task_send_lu_reset_sas(ihost, idev, lun); + if (!test_bit(IDEV_GONE, &idev->flags)) { + if (dev_is_sata(dev)) + sas_ata_schedule_reset(dev); + else + /* Send the task management part of the reset. */ + ret = isci_task_send_lu_reset_sas(ihost, idev, lun); } out: isci_put_device(idev); @@ -512,8 +512,17 @@ int isci_task_abort_task(struct sas_task *task) spin_unlock_irqrestore(&ihost->scic_lock, flags); dev_warn(&ihost->pdev->dev, - "%s: dev = %p, task = %p, old_request == %p\n", - __func__, idev, task, old_request); + "%s: dev = %p (%s%s), task = %p, old_request == %p\n", + __func__, idev, + (dev_is_sata(task->dev) ? "STP/SATA" + : ((dev_is_expander(task->dev)) + ? "SMP" + : "SSP")), + ((idev) ? ((test_bit(IDEV_GONE, &idev->flags)) + ? " IDEV_GONE" + : "") + : " "), + task, old_request); /* Device reset conditions signalled in task_state_flags are the * responsbility of libsas to observe at the start of the error @@ -552,7 +561,8 @@ int isci_task_abort_task(struct sas_task *task) if (task->task_proto == SAS_PROTOCOL_SMP || sas_protocol_ata(task->task_proto) || - test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags)) { + test_bit(IREQ_COMPLETE_IN_TARGET, &old_request->flags) || + test_bit(IDEV_GONE, &idev->flags)) { spin_unlock_irqrestore(&ihost->scic_lock, flags); @@ -561,7 +571,8 @@ int isci_task_abort_task(struct sas_task *task) dev_warn(&ihost->pdev->dev, "%s: %s request" - " or complete_in_target (%d), thus no TMF\n", + " or complete_in_target (%d), " + "or IDEV_GONE (%d), thus no TMF\n", __func__, ((task->task_proto == SAS_PROTOCOL_SMP) ? "SMP" @@ -570,7 +581,8 @@ int isci_task_abort_task(struct sas_task *task) : "") ), test_bit(IREQ_COMPLETE_IN_TARGET, - &old_request->flags)); + &old_request->flags), + test_bit(IDEV_GONE, &idev->flags)); spin_lock_irqsave(&task->task_state_lock, flags); task->task_state_flags &= ~(SAS_TASK_AT_INITIATOR | @@ -734,7 +746,7 @@ static int isci_reset_device(struct isci_host *ihost, struct domain_device *dev, struct isci_remote_device *idev) { - int rc = TMF_RESP_FUNC_COMPLETE, reset_stat; + int rc = TMF_RESP_FUNC_COMPLETE, reset_stat = -1; struct sas_phy *phy = sas_get_local_phy(dev); struct isci_port *iport = dev->port->lldd_port; @@ -752,14 +764,15 @@ static int isci_reset_device(struct isci_host *ihost, * primary duty of this function is to cleanup tasks, so that is the * relevant status. */ - - if (scsi_is_sas_phy_local(phy)) { - struct isci_phy *iphy = &ihost->phys[phy->number]; - - reset_stat = isci_port_perform_hard_reset(ihost, iport, iphy); - } else - reset_stat = sas_phy_reset(phy, !dev_is_sata(dev)); - + if (!test_bit(IDEV_GONE, &idev->flags)) { + if (scsi_is_sas_phy_local(phy)) { + struct isci_phy *iphy = &ihost->phys[phy->number]; + + reset_stat = isci_port_perform_hard_reset(ihost, iport, + iphy); + } else + reset_stat = sas_phy_reset(phy, !dev_is_sata(dev)); + } /* Explicitly resume the RNC here, since there was no task sent. */ isci_remote_device_resume_from_abort(ihost, idev); -- cgit v1.1 From f8381807ebdfffa34c2c5aa38eda33673d1a7adf Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Sun, 4 Mar 2012 12:44:53 +0000 Subject: isci: Remove obviated host callback list. Since the callbacks to libsas now occur under scic_lock, there is no longer any reason to save the completed requests in a separate list for completion to libsas. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.c | 78 +++++++++++++++------------------------------ drivers/scsi/isci/host.h | 2 +- drivers/scsi/isci/init.c | 1 - drivers/scsi/isci/request.c | 14 +++----- drivers/scsi/isci/request.h | 2 -- 5 files changed, 31 insertions(+), 66 deletions(-) diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c index ef2790f..45385f5 100644 --- a/drivers/scsi/isci/host.c +++ b/drivers/scsi/isci/host.c @@ -1077,6 +1077,32 @@ static void sci_controller_completion_handler(struct isci_host *ihost) writel(0, &ihost->smu_registers->interrupt_mask); } +void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_task *task) +{ + task->lldd_task = NULL; + if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags) && + !(task->task_state_flags & SAS_TASK_STATE_ABORTED)) { + if (test_bit(IREQ_COMPLETE_IN_TARGET, &ireq->flags)) { + /* Normal notification (task_done) */ + dev_dbg(&ihost->pdev->dev, + "%s: Normal - ireq/task = %p/%p\n", + __func__, ireq, task); + + task->task_done(task); + } else { + dev_dbg(&ihost->pdev->dev, + "%s: Error - ireq/task = %p/%p\n", + __func__, ireq, task); + + sas_task_abort(task); + } + } + if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) + wake_up_all(&ihost->eventq); + + if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags)) + isci_free_tag(ihost, ireq->io_tag); +} /** * isci_host_completion_routine() - This function is the delayed service * routine that calls the sci core library's completion handler. It's @@ -1088,62 +1114,10 @@ static void sci_controller_completion_handler(struct isci_host *ihost) void isci_host_completion_routine(unsigned long data) { struct isci_host *ihost = (struct isci_host *)data; - struct list_head completed_request_list; - struct list_head *current_position; - struct list_head *next_position; - struct isci_request *request; - struct sas_task *task; u16 active; - INIT_LIST_HEAD(&completed_request_list); - spin_lock_irq(&ihost->scic_lock); - sci_controller_completion_handler(ihost); - - /* Take the lists of completed I/Os from the host. */ - list_splice_init(&ihost->requests_to_complete, - &completed_request_list); - - /* Process any completions in the list. */ - list_for_each_safe(current_position, next_position, - &completed_request_list) { - - request = list_entry(current_position, struct isci_request, - completed_node); - task = isci_request_access_task(request); - - /* Return the task to libsas */ - if (task != NULL) { - - task->lldd_task = NULL; - if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags) && - !(task->task_state_flags & SAS_TASK_STATE_ABORTED)) { - if (test_bit(IREQ_COMPLETE_IN_TARGET, - &request->flags)) { - - /* Normal notification (task_done) */ - dev_dbg(&ihost->pdev->dev, "%s: Normal" - " - request/task = %p/%p\n", - __func__, request, task); - - task->task_done(task); - } else { - dev_warn(&ihost->pdev->dev, - "%s: Error - request/task" - " = %p/%p\n", - __func__, request, task); - - sas_task_abort(task); - } - } - } - if (test_and_clear_bit(IREQ_ABORT_PATH_ACTIVE, &request->flags)) - wake_up_all(&ihost->eventq); - - if (!test_bit(IREQ_NO_AUTO_FREE_TAG, &request->flags)) - isci_free_tag(ihost, request->io_tag); - } spin_unlock_irq(&ihost->scic_lock); /* the coalesence timeout doubles at each encoding step, so diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index eaa13c0..8e8b463 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -204,7 +204,6 @@ struct isci_host { unsigned long flags; wait_queue_head_t eventq; struct tasklet_struct completion_tasklet; - struct list_head requests_to_complete; spinlock_t scic_lock; struct isci_request *reqs[SCI_MAX_IO_REQUESTS]; struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES]; @@ -473,6 +472,7 @@ void isci_host_scan_start(struct Scsi_Host *); u16 isci_alloc_tag(struct isci_host *ihost); enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag); void isci_tci_free(struct isci_host *ihost, u16 tci); +void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_task *task); int isci_host_init(struct isci_host *); void isci_host_completion_routine(unsigned long data); diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c index f2a8a334..47e28b5 100644 --- a/drivers/scsi/isci/init.c +++ b/drivers/scsi/isci/init.c @@ -555,7 +555,6 @@ static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) return NULL; } - INIT_LIST_HEAD(&ihost->requests_to_complete); for (i = 0; i < SCI_MAX_PORTS; i++) { struct isci_port *iport = &ihost->ports[i]; diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index 6c530e4..7a0431c 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2748,13 +2748,9 @@ static void isci_request_io_request_complete(struct isci_host *ihost, enum exec_status status = SAS_ABORTED_TASK; dev_dbg(&ihost->pdev->dev, - "%s: request = %p, task = %p,\n" + "%s: request = %p, task = %p, " "task->data_dir = %d completion_status = 0x%x\n", - __func__, - request, - task, - task->data_dir, - completion_status); + __func__, request, task, task->data_dir, completion_status); /* The request is done from an SCU HW perspective. */ @@ -2955,9 +2951,6 @@ static void isci_request_io_request_complete(struct isci_host *ihost, } spin_unlock_irqrestore(&task->task_state_lock, task_flags); - /* Add to the completed list. */ - list_add(&request->completed_node, &ihost->requests_to_complete); - /* complete the io request to the core. */ sci_controller_complete_io(ihost, request->target_device, request); @@ -2966,6 +2959,8 @@ static void isci_request_io_request_complete(struct isci_host *ihost, * task to recognize the already completed case. */ set_bit(IREQ_TERMINATED, &request->flags); + + ireq_done(ihost, request, task); } static void sci_request_started_state_enter(struct sci_base_state_machine *sm) @@ -3416,7 +3411,6 @@ static struct isci_request *isci_request_from_tag(struct isci_host *ihost, u16 t ireq->io_request_completion = NULL; ireq->flags = 0; ireq->num_sg_entries = 0; - INIT_LIST_HEAD(&ireq->completed_node); return ireq; } diff --git a/drivers/scsi/isci/request.h b/drivers/scsi/isci/request.h index 1a65157..aff9531 100644 --- a/drivers/scsi/isci/request.h +++ b/drivers/scsi/isci/request.h @@ -95,8 +95,6 @@ struct isci_request { struct isci_tmf *tmf_task_ptr; /* When ttype==tmf_task */ } ttype_ptr; struct isci_host *isci_host; - /* For use in the requests_to_{complete|abort} lists: */ - struct list_head completed_node; dma_addr_t request_daddr; dma_addr_t zero_scatter_daddr; unsigned int num_sg_entries; -- cgit v1.1 From 3ef768c6c0caa83b9fe66f19a18898ed0315ac36 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Mon, 12 Mar 2012 17:29:51 -0700 Subject: isci: Manage the IREQ_NO_AUTO_FREE_TAG under scic_lock. Since there is a possibilty of a timeout waiting for the RNC suspension, handle the exit case from the task termination under scic_lock, and leave the tag allocated if the termination timed-out. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_device.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index 48765aa..a3a6487 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -243,8 +243,11 @@ enum sci_status isci_remote_device_terminate_requests( idev->rnc.destination_state, ireq, ireq->flags); } + spin_lock_irqsave(&ihost->scic_lock, flags); clear_bit(IREQ_NO_AUTO_FREE_TAG, &ireq->flags); - isci_free_tag(ihost, ireq->io_tag); + if (!test_bit(IREQ_ABORT_PATH_ACTIVE, &ireq->flags)) + isci_free_tag(ihost, ireq->io_tag); + spin_unlock_irqrestore(&ihost->scic_lock, flags); } else { /* Terminate all TCs. */ sci_remote_device_terminate_requests(idev); -- cgit v1.1 From 79cbab89ff31b6c6ab896d4ed5e3b2ae65193a96 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Tue, 13 Mar 2012 16:36:35 -0700 Subject: isci: Fix RNC AWAIT_SUSPENSION->INVALIDATING transition. The RNC state machine would incorrectly transition from SCI_RNC_AWAIT_SUSPENSION directly to SCI_RNC_INVALIDATING when a destruct request was made. This would skip the increment of the suspension count and the abort of pending TCs (although the invalidating state would at least cleanup outstanding TCs). Instead, the RNC will transition to SCI_RNC_SUSPENDED and then start the destruction process. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_node_context.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 920c2bb..6f0b61b 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -222,13 +222,19 @@ static void sci_remote_node_context_notify_user( static void sci_remote_node_context_continue_state_transitions(struct sci_remote_node_context *rnc) { - if ((rnc->destination_state == RNC_DEST_READY) || - (rnc->destination_state == RNC_DEST_SUSPENDED_RESUME)) { + switch (rnc->destination_state) { + case RNC_DEST_READY: + case RNC_DEST_SUSPENDED_RESUME: rnc->destination_state = RNC_DEST_READY; + /* Fall through... */ + case RNC_DEST_FINAL: sci_remote_node_context_resume(rnc, rnc->user_callback, - rnc->user_cookie); - } else + rnc->user_cookie); + break; + default: rnc->destination_state = RNC_DEST_UNSPECIFIED; + break; + } } static void sci_remote_node_context_validate_context_buffer(struct sci_remote_node_context *sci_rnc) @@ -539,10 +545,12 @@ enum sci_status sci_remote_node_context_destruct(struct sci_remote_node_context case SCI_RNC_READY: case SCI_RNC_TX_SUSPENDED: case SCI_RNC_TX_RX_SUSPENDED: - case SCI_RNC_AWAIT_SUSPENSION: sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p); sci_change_state(&sci_rnc->sm, SCI_RNC_INVALIDATING); return SCI_SUCCESS; + case SCI_RNC_AWAIT_SUSPENSION: + sci_remote_node_context_setup_to_destroy(sci_rnc, cb_fn, cb_p); + return SCI_SUCCESS; case SCI_RNC_INITIAL: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), "%s: invalid state: %s\n", __func__, -- cgit v1.1 From 6c6aacbb7787dccc6fb662bae66e599bbf0f07b5 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Tue, 13 Mar 2012 17:03:00 -0700 Subject: isci: Fixed RNC bug that lost the suspension or resumption during destroy This fix corrects the saving of resume parameters when the destruction of the RNC has already been directed, and makes sure not to overwrite the RNC destruction callbacks. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/remote_node_context.c | 96 +++++++++++++-------------------- 1 file changed, 38 insertions(+), 58 deletions(-) diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index 6f0b61b..f5792a9 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -160,15 +160,6 @@ static void sci_remote_node_context_construct_buffer(struct sci_remote_node_cont rnc->ssp.oaf_source_zone_group = 0; rnc->ssp.oaf_more_compatibility_features = 0; } - -static void sci_remote_node_context_save_cbparams( - struct sci_remote_node_context *sci_rnc, - scics_sds_remote_node_context_callback callback, - void *callback_parameter) -{ - sci_rnc->user_callback = callback; - sci_rnc->user_cookie = callback_parameter; -} /** * * @sci_rnc: @@ -187,9 +178,10 @@ static void sci_remote_node_context_setup_to_resume( { if (sci_rnc->destination_state != RNC_DEST_FINAL) { sci_rnc->destination_state = dest_param; - if (callback != NULL) - sci_remote_node_context_save_cbparams( - sci_rnc, callback, callback_parameter); + if (callback != NULL) { + sci_rnc->user_callback = callback; + sci_rnc->user_cookie = callback_parameter; + } } } @@ -610,7 +602,8 @@ enum sci_status sci_remote_node_context_suspend( * entry into the SCI_RNC_READY state that a suspension * needs to be done immediately. */ - sci_rnc->destination_state = RNC_DEST_SUSPENDED; + if (sci_rnc->destination_state != RNC_DEST_FINAL) + sci_rnc->destination_state = RNC_DEST_SUSPENDED; sci_rnc->suspend_type = suspend_type; sci_rnc->suspend_reason = suspend_reason; return SCI_SUCCESS; @@ -680,12 +673,9 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s if (sci_rnc->remote_node_index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) return SCI_FAILURE_INVALID_STATE; - if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) - sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, - cb_p); - else { - sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, - cb_p, RNC_DEST_READY); + sci_remote_node_context_setup_to_resume(sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); + if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) { sci_remote_node_context_construct_buffer(sci_rnc); sci_change_state(&sci_rnc->sm, SCI_RNC_POSTING); } @@ -694,38 +684,30 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s case SCI_RNC_POSTING: case SCI_RNC_INVALIDATING: case SCI_RNC_RESUMING: - if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) - sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, - cb_p); - else { - /* We are still waiting to post when a resume was - * requested. + /* We are still waiting to post when a resume was + * requested. + */ + switch (sci_rnc->destination_state) { + case RNC_DEST_SUSPENDED: + case RNC_DEST_SUSPENDED_RESUME: + /* Previously waiting to suspend after posting. + * Now continue onto resumption. */ - switch (sci_rnc->destination_state) { - case RNC_DEST_SUSPENDED: - case RNC_DEST_SUSPENDED_RESUME: - /* Previously waiting to suspend after posting. - * Now continue onto resumption. - */ - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_SUSPENDED_RESUME); - break; - default: - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_READY); - break; - } + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_SUSPENDED_RESUME); + break; + default: + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, + RNC_DEST_READY); + break; } return SCI_SUCCESS; case SCI_RNC_TX_SUSPENDED: case SCI_RNC_TX_RX_SUSPENDED: - if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) - sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, - cb_p); - else { + { struct domain_device *dev = idev->domain_dev; /* If this is an expander attached SATA device we must * invalidate and repost the RNC since this is the only @@ -735,23 +717,21 @@ enum sci_status sci_remote_node_context_resume(struct sci_remote_node_context *s sci_remote_node_context_setup_to_resume( sci_rnc, cb_fn, cb_p, RNC_DEST_READY); - if (dev_is_sata(dev) && dev->parent) - sci_change_state(&sci_rnc->sm, - SCI_RNC_INVALIDATING); - else - sci_change_state(&sci_rnc->sm, - SCI_RNC_RESUMING); + if (!test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) { + if ((dev_is_sata(dev) && dev->parent) || + (sci_rnc->destination_state == RNC_DEST_FINAL)) + sci_change_state(&sci_rnc->sm, + SCI_RNC_INVALIDATING); + else + sci_change_state(&sci_rnc->sm, + SCI_RNC_RESUMING); + } } return SCI_SUCCESS; case SCI_RNC_AWAIT_SUSPENSION: - if (test_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags)) - sci_remote_node_context_save_cbparams(sci_rnc, cb_fn, - cb_p); - else - sci_remote_node_context_setup_to_resume( - sci_rnc, cb_fn, cb_p, - RNC_DEST_SUSPENDED_RESUME); + sci_remote_node_context_setup_to_resume( + sci_rnc, cb_fn, cb_p, RNC_DEST_SUSPENDED_RESUME); return SCI_SUCCESS; default: dev_warn(scirdev_to_dev(rnc_to_dev(sci_rnc)), -- cgit v1.1 From de2eb4d5c5c25e8fb75d1e19092f24b83cb7d8d5 Mon Sep 17 00:00:00 2001 From: Jeff Skirvin Date: Tue, 13 Mar 2012 17:15:11 -0700 Subject: isci: End the RNC resumption wait when the RNC is destroyed. While the RNC is suspended for I/O cleanup, the remote device can be stopped and the RNC setup for destruction. These changes accomodate that case in the abort path. Signed-off-by: Jeff Skirvin Signed-off-by: Dan Williams --- drivers/scsi/isci/host.h | 5 +++++ drivers/scsi/isci/remote_device.c | 29 +++++++++++++++++++++-------- drivers/scsi/isci/remote_node_context.c | 4 ++++ drivers/scsi/isci/remote_node_context.h | 6 +++--- 4 files changed, 33 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h index 8e8b463..9ab58e0 100644 --- a/drivers/scsi/isci/host.h +++ b/drivers/scsi/isci/host.h @@ -340,6 +340,11 @@ static inline struct isci_host *dev_to_ihost(struct domain_device *dev) return dev->port->ha->lldd_ha; } +static inline struct isci_host *idev_to_ihost(struct isci_remote_device *idev) +{ + return dev_to_ihost(idev->domain_dev); +} + /* we always use protocol engine group zero */ #define ISCI_PEG 0 diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index a3a6487..c3aa6c5 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1368,27 +1368,40 @@ static void isci_remote_device_resume_from_abort_complete(void *cbparam) wake_up(&ihost->eventq); } +static bool isci_remote_device_test_resume_done( + struct isci_host *ihost, + struct isci_remote_device *idev) +{ + unsigned long flags; + bool done; + + spin_lock_irqsave(&ihost->scic_lock, flags); + done = !test_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags) + || test_bit(IDEV_STOP_PENDING, &idev->flags) + || sci_remote_node_context_is_being_destroyed(&idev->rnc); + spin_unlock_irqrestore(&ihost->scic_lock, flags); + + return done; +} void isci_remote_device_wait_for_resume_from_abort( struct isci_host *ihost, struct isci_remote_device *idev) { - dev_dbg(scirdev_to_dev(idev), "%s: starting resume wait: %p\n", + dev_dbg(&ihost->pdev->dev, "%s: starting resume wait: %p\n", __func__, idev); #define MAX_RESUME_MSECS 10000 if (!wait_event_timeout(ihost->eventq, - (!test_bit(IDEV_ABORT_PATH_RESUME_PENDING, - &idev->flags) - || test_bit(IDEV_STOP_PENDING, &idev->flags)), - msecs_to_jiffies(MAX_RESUME_MSECS))) { + isci_remote_device_test_resume_done(ihost, idev), + msecs_to_jiffies(MAX_RESUME_MSECS))) { - dev_warn(scirdev_to_dev(idev), "%s: #### Timeout waiting for " + dev_warn(&ihost->pdev->dev, "%s: #### Timeout waiting for " "resume: %p\n", __func__, idev); } clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); - dev_dbg(scirdev_to_dev(idev), "%s: resume wait done: %p\n", + dev_dbg(&ihost->pdev->dev, "%s: resume wait done: %p\n", __func__, idev); } @@ -1414,7 +1427,7 @@ enum sci_status isci_remote_device_resume_from_abort( idev, isci_remote_device_resume_from_abort_complete, idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); - if (!destroyed) + if (!destroyed && (status == SCI_SUCCESS)) isci_remote_device_wait_for_resume_from_abort(ihost, idev); else clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); diff --git a/drivers/scsi/isci/remote_node_context.c b/drivers/scsi/isci/remote_node_context.c index f5792a9..1910100 100644 --- a/drivers/scsi/isci/remote_node_context.c +++ b/drivers/scsi/isci/remote_node_context.c @@ -190,9 +190,13 @@ static void sci_remote_node_context_setup_to_destroy( scics_sds_remote_node_context_callback callback, void *callback_parameter) { + struct isci_host *ihost = idev_to_ihost(rnc_to_dev(sci_rnc)); + sci_rnc->destination_state = RNC_DEST_FINAL; sci_rnc->user_callback = callback; sci_rnc->user_cookie = callback_parameter; + + wake_up(&ihost->eventq); } /** diff --git a/drivers/scsi/isci/remote_node_context.h b/drivers/scsi/isci/remote_node_context.h index 0d4a24d..a703b9c 100644 --- a/drivers/scsi/isci/remote_node_context.h +++ b/drivers/scsi/isci/remote_node_context.h @@ -229,8 +229,8 @@ int sci_remote_node_context_is_safe_to_abort( static inline bool sci_remote_node_context_is_being_destroyed( struct sci_remote_node_context *sci_rnc) { - return ((sci_rnc->sm.current_state_id == SCI_RNC_INVALIDATING) - && (sci_rnc->destination_state == RNC_DEST_FINAL)) - || (sci_rnc->sm.current_state_id == SCI_RNC_INITIAL); + return (sci_rnc->destination_state == RNC_DEST_FINAL) + || ((sci_rnc->sm.current_state_id == SCI_RNC_INITIAL) + && (sci_rnc->destination_state == RNC_DEST_UNSPECIFIED)); } #endif /* _SCIC_SDS_REMOTE_NODE_CONTEXT_H_ */ -- cgit v1.1