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2013-10-18drm: Prevent overwriting from userspace underallocating core ioctl structsChris Wilson1-1/+8
Apply the protections from commit 1b2f1489633888d4a06028315dc19d65768a1c05 Author: Dave Airlie <airlied@redhat.com> Date: Sat Aug 14 20:20:34 2010 +1000 drm: block userspace under allocating buffer and having drivers overwrite it (v2) to the core ioctl structs as well, for we found one instance where there is a 32-/64-bit size mismatch and were guilty of writing beyond the end of the user's buffer. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Dave Airlie <airlied@redhat.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: dri-devel@lists.freedesktop.org Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-15drm/vmwgfx: Don't kill clients on VT switchThomas Hellstrom1-5/+12
DRI clients that tried to grab the TTM lock when the master (X server) was switched away during a VT switch were sent the SIGTERM signal by the kernel. Fix this so that they are only sent that signal when the master has exited. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Jakob Bornecrantz <jakob@vmware.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-15drm/vmwgfx: Don't put resources with invalid id's on lru listThomas Hellstrom1-1/+1
The evict code may try to swap them out causing a BUG in the destroy function. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Jakob Bornecrantz <jakob@vmware.com> Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-11Revert "i915: Update VGA arbiter support for newer devices"Dave Airlie2-31/+3
This reverts commit 81b5c7bc8de3e6f63419139c2fc91bf81dea8a7d. Adding drm/i915 into the vga arbiter chain means that X (in a piece of well-meant paranoia) will do a get/put on the vga decoding around _every_ accel call down into the ddx. Which results in some nice performance disasters [1]. This really breaks userspace, by disabling DRI for everyone, and stops OpenGL from working, this isn't limited to just the i915 but both the integrated and discrete GPUs on multi-gpu systems, in other words this causes untold worlds of pain, Ville tried to come up with a Great Hack to fiddle the required VGA I/O ops behind everyone's back using stop_machine, but that didn't really work out [2]. Given that we're fairly late in the -rc stage for such games let's just revert this all. One thing we might want to keep is to delay the disabling of the vga decoding until the fbdev emulation and the fbcon screen is set up. If we kill vga mem decoding beforehand fbcon can end up with a white square in the top-left corner it tried to save from the vga memory for a seamless transition. And we have bug reports on older platforms which seem to match these symptoms. But again that's something to play around with in -next. References: [1] http://lists.x.org/archives/xorg-devel/2013-September/037763.html References: [2] http://www.spinics.net/lists/intel-gfx/msg34062.html Cc: Alex Williamson <alex.williamson@redhat.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-11Revert "drm/i915: Delay disabling of VGA memory until vgacon->fbcon handoff ↵Dave Airlie3-23/+11
is done" This reverts commit 6e1b4fdad5157bb9e88777d525704aba24389bee. This is part of a revert due to a userspace breakage, better explained in the revert of 1a1a4cbf4906a13c0c377f708df5d94168e7b582. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-11Merge branch 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux ↵Dave Airlie15-25/+53
into drm-fixes Regression fixes for audio and UVD, several hang fixes, some DPM fixes. * 'drm-fixes-3.12' of git://people.freedesktop.org/~agd5f/linux: drm/radeon: re-enable sw ACR support on pre-DCE4 drm/radeon/dpm: disable bapm on TN asics drm/radeon: improve soft reset on CIK drm/radeon: improve soft reset on SI drm/radeon/dpm: off by one in si_set_mc_special_registers() drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers() drm/radeon: forever loop on error in radeon_do_test_moves() drm/radeon: fix hw contexts for SUMO2 asics drm/radeon: fix typo in CP DMA register headers drm/radeon/dpm: disable multiple UVD states drm/radeon: use hw generated CTS/N values for audio drm/radeon: fix N/CTS clock matching for audio drm/radeon: use 64-bit math to calculate CTS values for audio (v2) drm/edid: catch kmalloc failure in drm_edid_to_speaker_allocation
2013-10-10drm/radeon: re-enable sw ACR support on pre-DCE4Alex Deucher1-0/+1
HW ACR support may have issues on some older chips, so use SW ACR for now until we've tested further. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> CC: Rafał Miłecki <zajec5@gmail.com>
2013-10-09drm/radeon/dpm: disable bapm on TN asicsAlex Deucher1-1/+1
Causes hangs on certain boards. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=70053 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/radeon: improve soft reset on CIKAlex Deucher1-0/+6
Disable CG/PG before resetting. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/radeon: improve soft reset on SIAlex Deucher1-0/+10
Disable CG/PG and stop the rlc before resetting. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon/dpm: off by one in si_set_mc_special_registers()Dan Carpenter1-3/+3
These checks should be ">=" instead of ">". j is used as an offset into the table->mc_reg_address[] array and that has SMC_SISLANDS_MC_REGISTER_ARRAY_SIZE (16) elements. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon/dpm/btc: off by one in btc_set_mc_special_registers()Dan Carpenter1-3/+3
It should be ">=" instead of ">" here. The table->mc_reg_address[] array has SMC_EVERGREEN_MC_REGISTER_ARRAY_SIZE (16) elements. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon: forever loop on error in radeon_do_test_moves()Dan Carpenter1-2/+2
The error path does this: for (--i; i >= 0; --i) { which is a forever loop because "i" is unsigned. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon: fix hw contexts for SUMO2 asicswojciech kapuscinski1-1/+1
They have 4 rather than 8. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=63599 Signed-off-by: wojciech kapuscinski <wojtask9@wp.pl> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon: fix typo in CP DMA register headersAlex Deucher3-5/+5
Wrong bit offset for SRC endian swapping. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
2013-10-09drm/radeon/dpm: disable multiple UVD statesAlex Deucher2-1/+5
Always use the regular UVD state for now. This fixes a performance regression with UVD playback on certain APUs. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/radeon: use hw generated CTS/N values for audioAlex Deucher2-4/+2
Use the hw generated values rather than calculating them in the driver. There may be some older r6xx asics where this doesn't work correctly. This remains to be seen. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=69675 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/radeon: fix N/CTS clock matching for audioAlex Deucher1-3/+3
The drm code that calculates the 1001 clocks rounds up rather than truncating. This allows the table to match properly on those modes. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=69675 Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/radeon: use 64-bit math to calculate CTS values for audio (v2)Alex Deucher1-2/+9
Avoid losing precision. See bug: https://bugs.freedesktop.org/show_bug.cgi?id=69675 v2: fix math as per Anssi's comments. Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2013-10-09drm/edid: catch kmalloc failure in drm_edid_to_speaker_allocationAlex Deucher1-0/+2
Return -ENOMEM if the allocation fails. Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com>
2013-10-10Revert "drm/fb-helper: don't sleep for screen unblank when an oops is in ↵Dave Airlie1-8/+0
progress" This reverts commit 928c2f0c006bf7f381f58af2b2786d2a858ae311. This patch double applied, two checks for the price of one. Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-09Merge remote-tracking branch 'nouveau/drm-nouveau-next' into drm-fixesDave Airlie1-1/+1
Disable MSIs for now until we can fix them up * nouveau/drm-nouveau-next: drm/nouveau/mc: disable msi support by default, it's busted in tons of places
2013-10-09drm/gma500: fix things after get/put page helpersRob Clark1-0/+1
Commit 8b9ba7a3 'drm/gma500: use gem get/put page helpers' was missing a line, which resulted in garbled screen. Signed-off-by: Rob Clark <robdclark@gmail.com> Tested-by: Guillaume CLÉMENT <gclement@baobob.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-10-08drm/nouveau/mc: disable msi support by default, it's busted in tons of placesBen Skeggs1-1/+1
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2013-10-07Merge tag 'drm-intel-fixes-2013-10-07' of ↵Dave Airlie4-9/+16
git://people.freedesktop.org/~danvet/drm-intel into drm-fixes Daniel writes: Just a few important fixes, all cc: stable (I've checked this time around and made sure they're really there ...). The dpms one is a regression from the modeset rework and has a good chance to rectify Linus' hdmi issues. * tag 'drm-intel-fixes-2013-10-07' of git://people.freedesktop.org/~danvet/drm-intel: drm/i915: Only apply DPMS to the encoder if enabled drm/i915: Mask LPSP to get PSR working even with Power Well in use by audio. drm/i915/hsw: Disable L3 caching of atomic memory operations. drm/i915: fix rps.vlv_work initialization
2013-10-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pendingLinus Torvalds8-25/+67
Pull SCSI target fixes from Nicholas Bellinger: "Here are the outstanding target fixes queued up for v3.12-rc4 code. The highlights include: - Make vhost/scsi tag percpu_ida_alloc() use GFP_ATOMIC - Allow sess_cmd_map allocation failure fallback to use vzalloc - Fix COMPARE_AND_WRITE se_cmd->data_length bug with FILEIO backends - Fixes for COMPARE_AND_WRITE callback recursive failure OOPs + non zero scsi_status bug - Make iscsi-target do acknowledgement tag release from RX context - Setup iscsi-target with extra (cmdsn_depth / 2) percpu_ida tags Also included is a iscsi-target patch CC'ed for v3.10+ that avoids legacy wait_for_task=true release during fast-past StatSN acknowledgement, and two other SRP target related patches that address long-standing issues that are CC'ed for v3.3+. Extra thanks to Thomas Glanzmann for his testing feedback with COMPARE_AND_WRITE + EXTENDED_COPY VAAI logic" * git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tags iscsi-target: Perform release of acknowledged tags from RX context iscsi-target: Only perform wait_for_tasks when performing shutdown target: Fail on non zero scsi_status in compare_and_write_callback target: Fix recursive COMPARE_AND_WRITE callback failure target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_size ib_srpt: always set response for task management target: Fall back to vzalloc upon ->sess_cmd_map kzalloc failure vhost/scsi: Use GFP_ATOMIC with percpu_ida_alloc for obtaining tag ib_srpt: Destroy cm_id before destroying QP. target: Fix xop->dbl assignment in target_xcopy_parse_segdesc_02
2013-10-06Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds3-17/+17
Pull slave-dmaengine fixes from Vinod Koul: "Here is the slave dmanegine fixes. We have the fix for deadlock issue on imx-dma by Michael and Josh's edma config fix along with author change" * 'fixes' of git://git.infradead.org/users/vkoul/slave-dma: dmaengine: imx-dma: fix callback path in tasklet dmaengine: imx-dma: fix lockdep issue between irqhandler and tasklet dmaengine: imx-dma: fix slow path issue in prep_dma_cyclic dma/Kconfig: Make TI_EDMA select TI_PRIV_EDMA edma: Update author email address
2013-10-05Merge tag 'gpio-v3.12-2' of ↵Linus Torvalds1-57/+101
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO fixes from Linus Walleij: "Two patches for the OMAP driver, dealing with setting up IRQs properly on the device tree boot path" * tag 'gpio-v3.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: gpio/omap: auto-setup a GPIO when used as an IRQ gpio/omap: maintain GPIO and IRQ usage separately
2013-10-05Merge tag 'usb-3.12-rc4' of ↵Linus Torvalds8-13/+29
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are none fixes for various USB driver problems. The majority are gadget/musb fixes, but there are some new device ids in here as well" * tag 'usb-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: chipidea: add Intel Clovertrail pci id usb: gadget: s3c-hsotg: fix can_write limit for non-periodic endpoints usb: gadget: f_fs: fix error handling usb: musb: dsps: do not bind to "musb-hdrc" USB: serial: option: Ignore card reader interface on Huawei E1750 usb: musb: gadget: fix otg active status flag usb: phy: gpio-vbus: fix deferred probe from __init usb: gadget: pxa25x_udc: fix deferred probe from __init usb: musb: fix otg default state
2013-10-05Merge tag 'tty-3.12-rc4' of ↵Linus Torvalds2-20/+27
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty fixes from Greg KH: "Here are two tty driver fixes for 3.12-rc4. One fixes the reported regression in the n_tty code that a number of people found recently, and the other one fixes an issue with xen consoles that broke in 3.10" * tag 'tty-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: xen/hvc: allow xenboot console to be used again tty: Fix pty master read() after slave closes
2013-10-05Merge tag 'staging-3.12-rc4' of ↵Linus Torvalds4-28/+21
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging fixes from Greg KH: "Here are 4 tiny staging and iio driver fixes for 3.12-rc4. Nothing major, just some small fixes for reported issues" * tag 'staging-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdevice iio:magnetometer: Bugfix magnetometer default output registers iio: Remove debugfs entries in iio_device_unregister() iio: amplifiers: ad8366: Remove regulator_put
2013-10-04Merge tag 'pm+acpi-3.12-rc4' of ↵Linus Torvalds4-4/+7
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management fixes from Rafael Wysocki: - The resume part of user space driven hibernation (s2disk) is now broken after the change that moved the creation of memory bitmaps to after the freezing of tasks, because I forgot that the resume utility loaded the image before freezing tasks and needed the bitmaps for that. The fix adds special handling for that case. - One of recent commits changed the export of acpi_bus_get_device() to EXPORT_SYMBOL_GPL(), which was technically correct but broke existing binary modules using that function including one in particularly widespread use. Change it back to EXPORT_SYMBOL(). - The intel_pstate driver sometimes fails to disable turbo if its no_turbo sysfs attribute is set. Fix from Srinivas Pandruvada. - One of recent cpufreq fixes forgot to update a check in cpufreq-cpu0 which still (incorrectly) treats non-NULL as non-error. Fix from Philipp Zabel. - The SPEAr cpufreq driver uses a wrong variable type in one place preventing it from catching errors returned by one of the functions called by it. Fix from Sachin Kamat. * tag 'pm+acpi-3.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI: Use EXPORT_SYMBOL() for acpi_bus_get_device() intel_pstate: fix no_turbo cpufreq: cpufreq-cpu0: NULL is a valid regulator, part 2 cpufreq: SPEAr: Fix incorrect variable type PM / hibernate: Fix user space driven resume regression
2013-10-04Merge tag 'iommu-fixes-v3.12-rc3' of ↵Linus Torvalds1-6/+7
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu fixes from Joerg Roedel: "A couple of fixes from the IOMMU side: - some small fixes for the new ARM-SMMU driver - a register offset correction for VT-d - add MAINTAINERS entry for drivers/iommu Overall no really big or intrusive changes" * tag 'iommu-fixes-v3.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: x86/iommu: correct ICS register offset MAINTAINERS: add overall IOMMU section iommu/arm-smmu: don't enable SMMU device until probing has completed iommu/arm-smmu: fix iommu_present() test in init iommu/arm-smmu: fix a signedness bug
2013-10-04dmaengine: imx-dma: fix callback path in taskletMichael Grzeschik1-4/+6
We need to free the ld_active list head before jumping into the callback routine. Otherwise the callback could run into issue_pending and change our ld_active list head we just going to free. This will run the channel list into an currupted and undefined state. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-04dmaengine: imx-dma: fix lockdep issue between irqhandler and taskletMichael Grzeschik1-11/+8
The tasklet and irqhandler are using spin_lock while other routines are using spin_lock_irqsave/restore. This leads to lockdep issues as described bellow. This patch is changing the code to use spinlock_irq_save/restore in both code pathes. As imxdma_xfer_desc always gets called with spin_lock_irqsave lock held, this patch also removes the spare call inside the routine to avoid double locking. [ 403.358162] ================================= [ 403.362549] [ INFO: inconsistent lock state ] [ 403.366945] 3.10.0-20130823+ #904 Not tainted [ 403.371331] --------------------------------- [ 403.375721] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 403.381769] swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 403.386762] (&(&imxdma->lock)->rlock){?.-...}, at: [<c019d77c>] imxdma_tasklet+0x20/0x134 [ 403.395201] {IN-HARDIRQ-W} state was registered at: [ 403.400108] [<c004b264>] mark_lock+0x2a0/0x6b4 [ 403.404798] [<c004d7c8>] __lock_acquire+0x650/0x1a64 [ 403.410004] [<c004f15c>] lock_acquire+0x94/0xa8 [ 403.414773] [<c02f74e4>] _raw_spin_lock+0x54/0x8c [ 403.419720] [<c019d094>] dma_irq_handler+0x78/0x254 [ 403.424845] [<c0061124>] handle_irq_event_percpu+0x38/0x1b4 [ 403.430670] [<c00612e4>] handle_irq_event+0x44/0x64 [ 403.435789] [<c0063a70>] handle_level_irq+0xd8/0xf0 [ 403.440903] [<c0060a20>] generic_handle_irq+0x28/0x38 [ 403.446194] [<c0009cc4>] handle_IRQ+0x68/0x8c [ 403.450789] [<c0008714>] avic_handle_irq+0x3c/0x48 [ 403.455811] [<c0008f84>] __irq_svc+0x44/0x74 [ 403.460314] [<c0040b04>] cpu_startup_entry+0x88/0xf4 [ 403.465525] [<c02f00d0>] rest_init+0xb8/0xe0 [ 403.470045] [<c03e07dc>] start_kernel+0x28c/0x2d4 [ 403.474986] [<a0008040>] 0xa0008040 [ 403.478709] irq event stamp: 50854 [ 403.482140] hardirqs last enabled at (50854): [<c001c6b8>] tasklet_action+0x38/0xdc [ 403.489954] hardirqs last disabled at (50853): [<c001c6a0>] tasklet_action+0x20/0xdc [ 403.497761] softirqs last enabled at (50850): [<c001bc64>] _local_bh_enable+0x14/0x18 [ 403.505741] softirqs last disabled at (50851): [<c001c268>] irq_exit+0x88/0xdc [ 403.513026] [ 403.513026] other info that might help us debug this: [ 403.519593] Possible unsafe locking scenario: [ 403.519593] [ 403.525548] CPU0 [ 403.528020] ---- [ 403.530491] lock(&(&imxdma->lock)->rlock); [ 403.534828] <Interrupt> [ 403.537474] lock(&(&imxdma->lock)->rlock); [ 403.541983] [ 403.541983] *** DEADLOCK *** [ 403.541983] [ 403.547951] no locks held by swapper/0. [ 403.551813] [ 403.551813] stack backtrace: [ 403.556222] CPU: 0 PID: 0 Comm: swapper Not tainted 3.10.0-20130823+ #904 [ 403.563039] Backtrace: [ 403.565581] [<c000b98c>] (dump_backtrace+0x0/0x10c) from [<c000bb28>] (show_stack+0x18/0x1c) [ 403.574054] r6:00000000 r5:c05c51d8 r4:c040bd58 r3:00200000 [ 403.579872] [<c000bb10>] (show_stack+0x0/0x1c) from [<c02f398c>] (dump_stack+0x20/0x28) [ 403.587955] [<c02f396c>] (dump_stack+0x0/0x28) from [<c02f29c8>] (print_usage_bug.part.28+0x224/0x28c) [ 403.597340] [<c02f27a4>] (print_usage_bug.part.28+0x0/0x28c) from [<c004b404>] (mark_lock+0x440/0x6b4) [ 403.606682] r8:c004a41c r7:00000000 r6:c040bd58 r5:c040c040 r4:00000002 [ 403.613566] [<c004afc4>] (mark_lock+0x0/0x6b4) from [<c004d844>] (__lock_acquire+0x6cc/0x1a64) [ 403.622244] [<c004d178>] (__lock_acquire+0x0/0x1a64) from [<c004f15c>] (lock_acquire+0x94/0xa8) [ 403.631010] [<c004f0c8>] (lock_acquire+0x0/0xa8) from [<c02f74e4>] (_raw_spin_lock+0x54/0x8c) [ 403.639614] [<c02f7490>] (_raw_spin_lock+0x0/0x8c) from [<c019d77c>] (imxdma_tasklet+0x20/0x134) [ 403.648434] r6:c3847010 r5:c040e890 r4:c38470d4 [ 403.653194] [<c019d75c>] (imxdma_tasklet+0x0/0x134) from [<c001c70c>] (tasklet_action+0x8c/0xdc) [ 403.662013] r8:c0599160 r7:00000000 r6:00000000 r5:c040e890 r4:c3847114 r3:c019d75c [ 403.670042] [<c001c680>] (tasklet_action+0x0/0xdc) from [<c001bd4c>] (__do_softirq+0xe4/0x1f0) [ 403.678687] r7:00000101 r6:c0402000 r5:c059919c r4:00000001 [ 403.684498] [<c001bc68>] (__do_softirq+0x0/0x1f0) from [<c001c268>] (irq_exit+0x88/0xdc) [ 403.692652] [<c001c1e0>] (irq_exit+0x0/0xdc) from [<c0009cc8>] (handle_IRQ+0x6c/0x8c) [ 403.700514] r4:00000030 r3:00000110 [ 403.704192] [<c0009c5c>] (handle_IRQ+0x0/0x8c) from [<c0008714>] (avic_handle_irq+0x3c/0x48) [ 403.712664] r5:c0403f28 r4:c0593ebc [ 403.716343] [<c00086d8>] (avic_handle_irq+0x0/0x48) from [<c0008f84>] (__irq_svc+0x44/0x74) [ 403.724733] Exception stack(0xc0403f28 to 0xc0403f70) [ 403.729841] 3f20: 00000001 00000004 00000000 20000013 c0402000 c04104a8 [ 403.738078] 3f40: 00000002 c0b69620 a0004000 41069264 a03fb5f4 c0403f7c c0403f40 c0403f70 [ 403.746301] 3f60: c004b92c c0009e74 20000013 ffffffff [ 403.751383] r6:ffffffff r5:20000013 r4:c0009e74 r3:c004b92c [ 403.757210] [<c0009e30>] (arch_cpu_idle+0x0/0x4c) from [<c0040b04>] (cpu_startup_entry+0x88/0xf4) [ 403.766161] [<c0040a7c>] (cpu_startup_entry+0x0/0xf4) from [<c02f00d0>] (rest_init+0xb8/0xe0) [ 403.774753] [<c02f0018>] (rest_init+0x0/0xe0) from [<c03e07dc>] (start_kernel+0x28c/0x2d4) [ 403.783051] r6:c03fc484 r5:ffffffff r4:c040a0e0 [ 403.787797] [<c03e0550>] (start_kernel+0x0/0x2d4) from [<a0008040>] (0xa0008040) Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-04dmaengine: imx-dma: fix slow path issue in prep_dma_cyclicMichael Grzeschik1-1/+1
When perparing cyclic_dma buffers by the sound layer, it will dump the following lockdep trace. The leading snd_pcm_action_single get called with read_lock_irq called. To fix this, we change the kcalloc call from GFP_KERNEL to GFP_ATOMIC. WARNING: at kernel/lockdep.c:2740 lockdep_trace_alloc+0xcc/0x114() DEBUG_LOCKS_WARN_ON(irqs_disabled_flags(flags)) Modules linked in: CPU: 0 PID: 832 Comm: aplay Not tainted 3.11.0-20130823+ #903 Backtrace: [<c000b98c>] (dump_backtrace+0x0/0x10c) from [<c000bb28>] (show_stack+0x18/0x1c) r6:c004c090 r5:00000009 r4:c2e0bd18 r3:00404000 [<c000bb10>] (show_stack+0x0/0x1c) from [<c02f397c>] (dump_stack+0x20/0x28) [<c02f395c>] (dump_stack+0x0/0x28) from [<c001531c>] (warn_slowpath_common+0x54/0x70) [<c00152c8>] (warn_slowpath_common+0x0/0x70) from [<c00153dc>] (warn_slowpath_fmt+0x38/0x40) r8:00004000 r7:a3b90000 r6:000080d0 r5:60000093 r4:c2e0a000 r3:00000009 [<c00153a4>] (warn_slowpath_fmt+0x0/0x40) from [<c004c090>] (lockdep_trace_alloc+0xcc/0x114) r3:c03955d8 r2:c03907db [<c004bfc4>] (lockdep_trace_alloc+0x0/0x114) from [<c008f16c>] (__kmalloc+0x34/0x118) r6:000080d0 r5:c3800120 r4:000080d0 r3:c040a0f8 [<c008f138>] (__kmalloc+0x0/0x118) from [<c019c95c>] (imxdma_prep_dma_cyclic+0x64/0x168) r7:a3b90000 r6:00000004 r5:c39d8420 r4:c3847150 [<c019c8f8>] (imxdma_prep_dma_cyclic+0x0/0x168) from [<c024618c>] (snd_dmaengine_pcm_trigger+0xa8/0x160) [<c02460e4>] (snd_dmaengine_pcm_trigger+0x0/0x160) from [<c0241fa8>] (soc_pcm_trigger+0x90/0xb4) r8:c058c7b0 r7:c3b8140c r6:c39da560 r5:00000001 r4:c3b81000 [<c0241f18>] (soc_pcm_trigger+0x0/0xb4) from [<c022ece4>] (snd_pcm_do_start+0x2c/0x38) r7:00000000 r6:00000003 r5:c058c7b0 r4:c3b81000 [<c022ecb8>] (snd_pcm_do_start+0x0/0x38) from [<c022e958>] (snd_pcm_action_single+0x40/0x6c) [<c022e918>] (snd_pcm_action_single+0x0/0x6c) from [<c022ea64>] (snd_pcm_action_lock_irq+0x7c/0x9c) r7:00000003 r6:c3b810f0 r5:c3b810f0 r4:c3b81000 [<c022e9e8>] (snd_pcm_action_lock_irq+0x0/0x9c) from [<c023009c>] (snd_pcm_common_ioctl1+0x7f8/0xfd0) r8:c3b7f888 r7:005407b8 r6:c2c991c0 r5:c3b81000 r4:c3b81000 r3:00004142 [<c022f8a4>] (snd_pcm_common_ioctl1+0x0/0xfd0) from [<c023117c>] (snd_pcm_playback_ioctl1+0x464/0x488) [<c0230d18>] (snd_pcm_playback_ioctl1+0x0/0x488) from [<c02311d4>] (snd_pcm_playback_ioctl+0x34/0x40) r8:c3b7f888 r7:00004142 r6:00000004 r5:c2c991c0 r4:005407b8 [<c02311a0>] (snd_pcm_playback_ioctl+0x0/0x40) from [<c00a14a4>] (vfs_ioctl+0x30/0x44) [<c00a1474>] (vfs_ioctl+0x0/0x44) from [<c00a1fe8>] (do_vfs_ioctl+0x55c/0x5c0) [<c00a1a8c>] (do_vfs_ioctl+0x0/0x5c0) from [<c00a208c>] (SyS_ioctl+0x40/0x68) [<c00a204c>] (SyS_ioctl+0x0/0x68) from [<c0009380>] (ret_fast_syscall+0x0/0x44) r8:c0009544 r7:00000036 r6:bedeaa58 r5:00000000 r4:000000c0 Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-10-03xen/hvc: allow xenboot console to be used againDavid Vrabel1-0/+1
Commit d0380e6c3c0f6edb986d8798a23acfaf33d5df23 (early_printk: consolidate random copies of identical code) added in 3.10 introduced a check for con->index == -1 in early_console_register(). Initialize index to -1 for the xenboot console so earlyprintk=xen works again. Signed-off-by: David Vrabel <david.vrabel@citrix.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jiri Slaby <jslaby@suse.cz> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03usb: chipidea: add Intel Clovertrail pci idDavid Cohen1-1/+6
Also clean up the last item of the pci id list to be "cleaner". Signed-off-by: David Cohen <david.a.cohen@linux.intel.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03staging: comedi: ni_65xx: (bug fix) confine insn_bits to one subdeviceIan Abbott1-15/+10
The `insn_bits` handler `ni_65xx_dio_insn_bits()` has a `for` loop that currently writes (optionally) and reads back up to 5 "ports" consisting of 8 channels each. It reads up to 32 1-bit channels but can only read and write a whole port at once - it needs to handle up to 5 ports as the first channel it reads might not be aligned on a port boundary. It breaks out of the loop early if the next port it handles is beyond the final port on the card. It also breaks out early on the 5th port in the loop if the first channel was aligned. Unfortunately, it doesn't check that the current port it is dealing with belongs to the comedi subdevice the `insn_bits` handler is acting on. That's a bug. Redo the `for` loop to terminate after the final port belonging to the subdevice, changing the loop variable in the process to simplify things a bit. The `for` loop could now try and handle more than 5 ports if the subdevice has more than 40 channels, but the test `if (bitshift >= 32)` ensures it will break out early after 4 or 5 ports (depending on whether the first channel is aligned on a port boundary). (`bitshift` will be between -7 and 7 inclusive on the first iteration, increasing by 8 for each subsequent operation.) Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Cc: <stable@vger.kernel.org> # 3.10.y 3.11.y 3.12.y Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03iscsi-target; Allow an extra tag_num / 2 number of percpu_ida tagsNicholas Bellinger1-1/+1
This patch bumps the default number of tags allocated per session by iscsi-target via transport_alloc_session_tags() -> percpu_ida_init() by another (tag_num / 2). This is done to take into account the tags waiting to be acknowledged and released in iscsit_ack_from_expstatsn(), but who's number are not directly limited by the CmdSN Window queue_depth being enforced by the target. Using a larger value here is also useful to prevent percpu_ida_alloc() from having to steal tags from other CPUs when no tags are available on the local CPU, while waiting for unacknowledged tags to be released. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03iscsi-target: Perform release of acknowledged tags from RX contextNicholas Bellinger1-4/+9
This patch converts iscsit_ack_from_expstatsn() to populate a local ack_list of commands, and call iscsit_free_cmd() directly from RX thread context, instead of using iscsit_add_cmd_to_immediate_queue() to queue the acknowledged commands to be released from TX thread context. It is helpful to release the acknowledge commands as quickly as possible, along with the associated percpu_ida tags, in order to prevent percpu_ida_alloc() from having to steal tags from other CPUs while waiting for iscsit_free_cmd() to happen from TX thread context. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03iscsi-target: Only perform wait_for_tasks when performing shutdownNicholas Bellinger1-2/+2
This patch changes transport_generic_free_cmd() to only wait_for_tasks when shutdown=true is passed to iscsit_free_cmd(). With the advent of >= v3.10 iscsi-target code using se_cmd->cmd_kref, the extra wait_for_tasks with shutdown=false is unnecessary, and may end up causing an extra context switch when releasing WRITEs. Cc: stable@vger.kernel.org # 3.10+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03drm/i915: Only apply DPMS to the encoder if enabledChris Wilson1-6/+2
The current test for an attached enabled encoder fails if we have multiple connectors aliased to the same encoder - both connectors believe they own the enabled encoder and so we attempt to both enable and disable DPMS on the encoder, leading to hilarity and an OOPs: [ 354.803064] WARNING: CPU: 0 PID: 482 at /usr/src/linux/dist/3.11.2/drivers/gpu/drm/i915/intel_display.c:3869 intel_modeset_check_state+0x764/0x770 [i915]() [ 354.803064] wrong connector dpms state [ 354.803084] Modules linked in: nfsd auth_rpcgss oid_registry exportfs nfs lockd sunrpc xt_nat iptable_nat nf_nat_ipv4 nf_nat xt_limit xt_LOG xt_tcpudp nf_conntrack_ipv4 nf_defrag_ipv4 ipt_REJECT ipv6 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables x_tables snd_hda_codec_realtek snd_hda_codec_hdmi x86_pkg_temp_thermal snd_hda_intel coretemp kvm_intel snd_hda_codec i915 kvm snd_hwdep snd_pcm_oss snd_mixer_oss crc32_pclmul snd_pcm crc32c_intel e1000e intel_agp igb ghash_clmulni_intel intel_gtt aesni_intel cfbfillrect aes_x86_64 cfbimgblt lrw cfbcopyarea drm_kms_helper ptp video thermal processor gf128mul snd_page_alloc drm snd_timer glue_helper 8250_pci snd pps_core ablk_helper agpgart cryptd sg soundcore fan i2c_algo_bit sr_mod thermal_sys 8250 i2c_i801 serial_core hwmon cdrom i2c_core evdev button [ 354.803086] CPU: 0 PID: 482 Comm: kworker/0:1 Not tainted 3.11.2 #1 [ 354.803087] Hardware name: Supermicro X10SAE/X10SAE, BIOS 1.00 05/03/2013 [ 354.803091] Workqueue: events console_callback [ 354.803092] 0000000000000009 ffff88023611db48 ffffffff814048ac ffff88023611db90 [ 354.803093] ffff88023611db80 ffffffff8103d4e3 ffff880230d82800 ffff880230f9b800 [ 354.803094] ffff880230f99000 ffff880230f99448 ffff8802351c0e00 ffff88023611dbe0 [ 354.803094] Call Trace: [ 354.803098] [<ffffffff814048ac>] dump_stack+0x54/0x8d [ 354.803101] [<ffffffff8103d4e3>] warn_slowpath_common+0x73/0x90 [ 354.803103] [<ffffffff8103d547>] warn_slowpath_fmt+0x47/0x50 [ 354.803109] [<ffffffffa089f1be>] ? intel_ddi_connector_get_hw_state+0x5e/0x110 [i915] [ 354.803114] [<ffffffffa0896974>] intel_modeset_check_state+0x764/0x770 [i915] [ 354.803117] [<ffffffffa08969bb>] intel_connector_dpms+0x3b/0x60 [i915] [ 354.803120] [<ffffffffa037e1d0>] drm_fb_helper_dpms.isra.11+0x120/0x160 [drm_kms_helper] [ 354.803122] [<ffffffffa037e24e>] drm_fb_helper_blank+0x3e/0x80 [drm_kms_helper] [ 354.803123] [<ffffffff812116c2>] fb_blank+0x52/0xc0 [ 354.803125] [<ffffffff8121e04b>] fbcon_blank+0x21b/0x2d0 [ 354.803127] [<ffffffff81062243>] ? update_rq_clock.part.74+0x13/0x30 [ 354.803129] [<ffffffff81047486>] ? lock_timer_base.isra.30+0x26/0x50 [ 354.803130] [<ffffffff810472b2>] ? internal_add_timer+0x12/0x40 [ 354.803131] [<ffffffff81047f48>] ? mod_timer+0xf8/0x1c0 [ 354.803133] [<ffffffff81266d61>] do_unblank_screen+0xa1/0x1c0 [ 354.803134] [<ffffffff81268087>] poke_blanked_console+0xc7/0xd0 [ 354.803136] [<ffffffff812681cf>] console_callback+0x13f/0x160 [ 354.803137] [<ffffffff81053258>] process_one_work+0x148/0x3d0 [ 354.803138] [<ffffffff81053f19>] worker_thread+0x119/0x3a0 [ 354.803140] [<ffffffff81053e00>] ? manage_workers.isra.30+0x2a0/0x2a0 [ 354.803141] [<ffffffff8105994b>] kthread+0xbb/0xc0 [ 354.803142] [<ffffffff81059890>] ? kthread_create_on_node+0x120/0x120 [ 354.803144] [<ffffffff8140b32c>] ret_from_fork+0x7c/0xb0 [ 354.803145] [<ffffffff81059890>] ? kthread_create_on_node+0x120/0x120 This regression goes back to the big modeset rework and the conversion to the new dpms helpers which started with: commit 5ab432ef4997ce32c9406721b37ef6e97e57dae1 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Sat Jun 30 08:59:56 2012 +0200 drm/i915/hdmi: convert to encoder->disable/enable Fixes: igt/kms_flip/dpms-off-confusion Reported-and-tested-by: Wakko Warner <wakko@animx.eu.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68030 Link: http://lkml.kernel.org/r/20130928185023.GA21672@animx.eu.org Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@vger.kernel.org [danvet: Add regression citation, mention the igt testcase this fixes and slap a cc: stable on the patch.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-03drm/i915: Mask LPSP to get PSR working even with Power Well in use by audio.Rodrigo Vivi1-1/+1
Power Well in use forces constantly PSR to exit. On recent Kernel I noticed that PSR Performance Counter was always 0 indicating that PSR was never really achieved. By masking LPSP, PSR can work normally and save power on Haswell. Two bugs had been raised with PSR flag enabled: - "Screen flickers when booted by enabling PSR in the kernel (i915.enable_psr=1) , the system is booting to a gray screen." - "When booting the DUT with PSR feature enabled in the kernel (i915.enable_psr=1) , the system is booting to a gray screen." Both bugs has been fixed by this patch. v2: proper comment for -fixes Tested-by: Selvaraj, Elavarasan <elavarasanx.selvaraj@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-03target: Fail on non zero scsi_status in compare_and_write_callbackNicholas Bellinger1-1/+10
This patch addresses a bug for backends such as IBLOCK that perform asynchronous completion via transport_complete_cmd(), that will call target_complete_failure_work() -> transport_generic_request_failure(), upon exception status and invoke cmd->transport_complete_callback() -> compare_and_write_callback() incorrectly during the failure case. It adds a check for a non zero se_cmd->scsi_status within the first invocation of compare_and_write_callback(), and will jump to out plus up se_device->caw_sem before exiting the callback. Reported-by: Thomas Glanzmann <thomas@glanzmann.de> Tested-by: Thomas Glanzmann <thomas@glanzmann.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03target: Fix recursive COMPARE_AND_WRITE callback failureNicholas Bellinger1-1/+10
This patch addresses a bug when compare_and_write_callback() invoked from target_complete_ok_work() hits an failure from __target_execute_cmd() -> cmd->execute_cmd(), that ends up calling transport_generic_request_failure() -> compare_and_write_post(), thus causing SCF_COMPARE_AND_WRITE_POST to incorrectly be set. The result of this bug is that target_complete_ok_work() no longer hits the if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST) check that forces an immediate return, and instead double completes the se_cmd in question, triggering an OOPs in the process. This patch changes compare_and_write_post() to only set this bit when a failure has not already occured to ensure the immediate return from within target_complete_ok_work(), and thus allow transport_generic_request_failure() to handle the sending of the CHECK_CONDITION exception status. Reported-by: Thomas Glanzmann <thomas@glanzmann.de> Tested-by: Thomas Glanzmann <thomas@glanzmann.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03target: Reset data_length for COMPARE_AND_WRITE to NoLB * block_sizeNicholas Bellinger1-0/+6
This patch resets se_cmd->data_length for COMPARE_AND_WRITE emulation within sbc_compare_and_write() to NoLB * block_size in order to address a bug with FILEIO backends where a I/O failure will occur when data_length does not match the I/O size being actually dispatched for the individual per block READs + WRITEs. This is done late enough in sbc_compare_and_write() after the memory allocations have occured in transport_generic_new_cmd() to not cause any unwanted side-effects. Reported-by: Thomas Glanzmann <thomas@glanzmann.de> Tested-by: Thomas Glanzmann <thomas@glanzmann.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03ib_srpt: always set response for task managementJack Wang1-6/+4
The SRP specification requires: "Response data shall be provided in any SRP_RSP response that is sent in response to an SRP_TSK_MGMT request (see 6.7). The information in the RSP_CODE field (see table 24) shall indicate the completion status of the task management function." So fix this to avoid the SRP initiator interprets task management functions that succeeded as failed. Signed-off-by: Jack Wang <jinpu.wang@profitbricks.com> Cc: stable@vger.kernel.org # 3.3+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2013-10-03drm/i915/hsw: Disable L3 caching of atomic memory operations.Francisco Jerez2-0/+11
Otherwise using any atomic memory operation will lock up the GPU due to a Haswell hardware bug. v2: Use the _MASKED_BIT_ENABLE macro. Drop drm parameter definition. Signed-off-by: Francisco Jerez <currojerez@riseup.net> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: <stable@vger.kernel.org> [danvet: Fix checkpatch fail.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-10-02Merge tag 'fixes-for-linus' of ↵Linus Torvalds3-15/+20
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: "We have a fairly large batch of fixes this time around, mostly just due to various platforms all having a fix or two more than usual. Worth pointing out are: - A fix for EDMA on Davinci/OMAP where channel allocation broke with the DT conversion. Due to some miscommunication we didn't understand the impact of the breakage, so we were pushing back on it for 3.12, but it sounds like it's actually breaking quite a few people out there. - A bunch of fixes for Marvell platforms, some straggling fixes for merge window fallout and some fixes for a couple of the platforms (Netgear RN102 in particular). - A fix for a race between multi-cluster power management and cpu hotplug on Versatile Express. And a bunch of other smaller fixes that all add up. We'll be switching over into stricter regressions-only mode from here on out" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (31 commits) ARM: multi_v7_defconfig: add SDHCI for i.MX bus: mvebu-mbus: Fix optional pcie-mem/io-aperture properties ARM: mvebu: add missing DT Mbus ranges and relocate PCIe DT nodes for RN102 ARM: at91: sam9g45: shutdown ddr1 too when rebooting MAINTAINERS: ARM: SIRF: use kernel.org mail box MAINTAINERS: ARM: SIRF: add missed drivers into maintain list ARM: edma: Fix clearing of unused list for DT DMA resources ARM: vexpress: tc2: fix hotplug/idle/kexec race on cluster power down ARM: dts: sirf: fix interrupt and dma prop of VIP for prima2 and atlas6 ARM: dts: sirf: fix the ranges of peri-iobrg of prima2 ARM: dts: makefile: build atlas6-evb.dtb for ARCH_ATLAS6 ARM: dts: sirf: fix fifosize, clks, dma channels for UART ARM: mvebu: Add DT entry for ReadyNAS 102 to use gpio-poweroff driver ARM: mvebu: fix ReadyNAS 102 Power button GPIO to make it active high ARM: mach-integrator: Add stub for pci_v3_early_init() for !CONFIG_PCI ARM: shmobile: Remove #gpio-ranges-cells DT property gpio: rcar: Remove #gpio-range-cells DT property usage ARM: shmobile: armadillo: fixup ether pinctrl naming ARM: shmobile: Lager: add Micrel KSZ8041 PHY fixup ARM: shmobile: update SDHI DT compatibility string to the <unit>-<soc> format ...
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