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2011-01-13leds: lp5523: fix circular lockingSamu Onkalo
Driver contained possibility for circular locking. One lock is held by sysfs-core and another one by the driver itself. This happened when the driver created or removed sysfs entries dynamically. There is no real need to do those operations. Now all the sysfs entries are created at probe and removed at removal. Engine load and mux configuration sysfs entries are now visible all the time. However, access to the entries fails if the engine is disabled or running. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Arun Murthy <arun.murthy@stericsson.com> Reviewed-by: Ilkka Koskinen <ilkka.koskinen@nokia.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13leds: leds-lp5523: modify the way of setting led device nameSamu Onkalo
Currently all leds channels begins with string lp5523. Patch adds a possibility to provide name via platform data. This makes it possible to have several chips without overlapping sysfs names. Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com> Cc: Arun Murthy <arun.murthy@stericsson.com> Cc: Ilkka Koskinen <ilkka.koskinen@nokia.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13leds: leds-pca9532 cleanupsAxel Lin
- Remove unneeded input_free_device() after input_unregister_device(). - Add pca9532_destroy_devices() function for destroy devices. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13drivers/leds/leds-lp5521.c: fix potential buffer overflowVasiliy Kulikov
The code doesn't check first sscanf() return value. If first sscanf() failed then c contains some garbage. It might lead to reading uninitialised stack data in the second sscanf() call. Signed-off-by: Vasiliy Kulikov <segoon@openwall.com> Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-12Merge branch 'drm-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (39 commits) i915/gtt: fix ordering causing DMAR errors on object teardown. i915/gtt: fix ordering issues with status setup and DMAR drm/i915/execbuffer: Reorder binding of objects to favour restrictions drm/i915: If we hit OOM when allocating GTT pages, clear the aperture drm/i915/evict: Ensure we completely cleanup on failure drm/i915/execbuffer: Correctly clear the current object list upon EFAULT drm/i915/debugfs: Show all objects in the gtt drm/i915: Record AGP memory type upon error drm/i915: Periodically flush the active lists and requests drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT drm/i915: Record the error batchbuffer on each ring drm/i915: Include TLB miss overhead for computing WM drm/i915: Propagate error from flushing the ring drm/i915: detect & report PCH display error interrupts drm/i915: cleanup rc6 code drm/i915: fix rc6 enabling around suspend/resume drm/i915: re-enable rc6 support for Ironlake+ drm/i915: Make the ring IMR handling private drm/i915/ringbuffer: Simplify the ring irq refcounting drm/i915/debugfs: Show the per-ring IMR ...
2011-01-12Merge branch 'stable/xenbus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen * 'stable/xenbus' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen: xen/xenbus: making backend support modular is too complex xen/pci: Make xen-pcifront be dependent on XEN_XENBUS_FRONTEND xen/xenbus: fixup checkpatch issues in xenbus_probe* xen/netfront: select XEN_XENBUS_FRONTEND xen/xenbus: clean up noise in xenbus_probe_frontend.c xen/xenbus: clean up noise in xenbus_probe_backend.c xen/xenbus: clean up noise in xenbus_probe.c xen/xenbus: cleanup debug noise in xenbus_comms.c xen/xenbus: clean up error handling xen/xenbus: make frontend bus GPL xen/xenbus: make sure backend bus is registered earlier xenbus/frontend: register bus earlier xen: remove xen/evtchn.h xen: add backend driver support xen: separate out frontend xenbus
2011-01-12i915/gtt: fix ordering causing DMAR errors on object teardown.Dave Airlie
Previous to the last GTT rework we always rewrote the GTT then unmapped the object, somehow this got reversed in the rework in 2.6.37-rc5 timeframe. This fix needs to go to stable in an alternate form since the code changed. This fixes DMAR reports on my Ironlake HP2540p. Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-01-12i915/gtt: fix ordering issues with status setup and DMARDave Airlie
This code was setting up the status page before setting the DMAR-is-on-bit, so we were getting DMAR errors on the status page. Reverse the two bits of init code to the correct result. Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-01-12Merge branch 'drm-intel-fixes' of ↵Dave Airlie
ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel * 'drm-intel-fixes' of ssh://master.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel: (37 commits) drm/i915/execbuffer: Reorder binding of objects to favour restrictions drm/i915: If we hit OOM when allocating GTT pages, clear the aperture drm/i915/evict: Ensure we completely cleanup on failure drm/i915/execbuffer: Correctly clear the current object list upon EFAULT drm/i915/debugfs: Show all objects in the gtt drm/i915: Record AGP memory type upon error drm/i915: Periodically flush the active lists and requests drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTT drm/i915: Record the error batchbuffer on each ring drm/i915: Include TLB miss overhead for computing WM drm/i915: Propagate error from flushing the ring drm/i915: detect & report PCH display error interrupts drm/i915: cleanup rc6 code drm/i915: fix rc6 enabling around suspend/resume drm/i915: re-enable rc6 support for Ironlake+ drm/i915: Make the ring IMR handling private drm/i915/ringbuffer: Simplify the ring irq refcounting drm/i915/debugfs: Show the per-ring IMR drm/i915: Mask USER interrupts on gen6 (until required) drm/i915: Handle ringbuffer stalls when flushing ...
2011-01-12Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (67 commits) cxgb4vf: recover from failure in cxgb4vf_open() netfilter: ebtables: make broute table work again netfilter: fix race in conntrack between dump_table and destroy ah: reload pointers to skb data after calling skb_cow_data() ah: update maximum truncated ICV length xfrm: check trunc_len in XFRMA_ALG_AUTH_TRUNC ehea: Increase the skb array usage net/fec: remove config FEC2 as it's used nowhere pcnet_cs: add new_id tcp: disallow bind() to reuse addr/port net/r8169: Update the function of parsing firmware net: ppp: use {get,put}_unaligned_be{16,32} CAIF: Fix IPv6 support in receive path for GPRS/3G arp: allow to invalidate specific ARP entries net_sched: factorize qdisc stats handling mlx4: Call alloc_etherdev to allocate RX and TX queues net: Add alloc_netdev_mqs function caif: don't set connection request param size before copying data cxgb4vf: fix mailbox data/control coherency domain race qlcnic: change module parameter permissions ...
2011-01-12Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (72 commits) powerpc/pseries: Fix build of topology stuff without CONFIG_NUMA powerpc/pseries: Fix VPHN build errors on non-SMP systems powerpc/83xx: add mpc8308_p1m DMA controller device-tree node powerpc/83xx: add DMA controller to mpc8308 device-tree node powerpc/512x: try to free dma descriptors in case of allocation failure powerpc/512x: add MPC8308 dma support powerpc/512x: fix the hanged dma transfer issue powerpc/512x: scatter/gather dma fix powerpc/powermac: Make auto-loading of therm_pm72 possible of/address: Use propper endianess in get_flags powerpc/pci: Use printf extension %pR for struct resource powerpc: Remove unnecessary casts of void ptr powerpc: Disable VPHN polling during a suspend operation powerpc/pseries: Poll VPA for topology changes and update NUMA maps powerpc: iommu: Add device name to iommu error printks powerpc: Record vma->phys_addr in ioremap() powerpc: Update compat_arch_ptrace powerpc: Fix PPC_PTRACE_SETHWDEBUG on PPC_BOOK3S powerpc/time: printk time stamp init not correct powerpc: Minor cleanups for machdep.h ...
2011-01-12Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (42 commits) IB/qib: Fix refcount leak in lkey/rkey validation IB/qib: Improve SERDES tunning on QMH boards IB/qib: Unnecessary delayed completions on RC connection IB/qib: Issue pre-emptive NAKs on eager buffer overflow IB/qib: RDMA lkey/rkey validation is inefficient for large MRs IB/qib: Change QPN increment IB/qib: Add fix missing from earlier patch IB/qib: Change receive queue/QPN selection IB/qib: Fix interrupt mitigation IB/qib: Avoid duplicate writes to the rcv head register IB/qib: Add a few new SERDES tunings IB/qib: Reset packet list after freeing IB/qib: New SERDES init routine and improvements to SI quality IB/qib: Clear WAIT_SEND flags when setting QP to error state IB/qib: Fix context allocation with multiple HCAs IB/qib: Fix multi-Florida HCA host panic on reboot IB/qib: Handle transitions from ACTIVE_DEFERRED to ACTIVE better IB/qib: UD send with immediate receive completion has wrong size IB/qib: Set port physical state even if other fields are invalid IB/qib: Generate completion callback on errors ...
2011-01-11cxgb4vf: recover from failure in cxgb4vf_open()Casey Leedom
If the Link Start fails in cxgb4vf_open(), we need to back out any state that we've built up ... Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-11drm/i915/execbuffer: Reorder binding of objects to favour restrictionsChris Wilson
As the mappable portion of the aperture is always a small subset at the start of the GTT, it is allocated preferentially by drm_mm. This is useful in case we ever need to map an object later. However, if you have a large object that can consume the entire mappable region of the GTT this prevents the batchbuffer from fitting and so causing an error. Instead allocate all those that require a mapping up front in order to improve the likelihood of finding sufficient space to bind them. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: If we hit OOM when allocating GTT pages, clear the apertureChris Wilson
Rather than evicting an object at random, which is unlikely to alleviate the memory pressure sufficient to allow us to continue, zap the entire aperture. That should give the system long enough to recover and reap some pages from the evicted objects, forestalling the allocation error for the new object. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/evict: Ensure we completely cleanup on failureChris Wilson
... and not leave the objects in a inconsistent state. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915/execbuffer: Correctly clear the current object list upon EFAULTChris Wilson
Before releasing the lock in order to copy the relocation list from user pages, we need to drop all the object references as another thread may usurp and execute another batchbuffer before we reacquire the lock. However, the code was buggy and failed to clear the list... Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915/debugfs: Show all objects in the gttChris Wilson
Useful for determining the layout. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Record AGP memory type upon errorChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Periodically flush the active lists and requestsChris Wilson
In order to retire active buffers whilst no client is active, we need to insert our own flush requests onto the ring. This is useful for servers that queue up some rendering and then go to sleep as it allows us to the complete processing of those requests, potentially making that memory available again much earlier. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11ehea: Increase the skb array usageBreno Leitao
Currently the skb array is not fully allocated, and the allocation is done as it's requested, which is not the expected way. This patch just allocate the full skb array at driver initialization. Also, this patch increases ehea version to 107. Signed-off-by: Breno Leitao <leitao@linux.vnet.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-11net/fec: remove config FEC2 as it's used nowhereShawn Guo
Signed-off-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-11pcnet_cs: add new_idKen Kawasaki
pcnet_cs: add another ID of "corega Ether CF-TD" 10Base-T PCMCIA card. Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-11drm/i915/gtt: Unmap the PCI pages after unbinding them from the GTTChris Wilson
Dave Airlie spotted that his ILK laptop with DMAR enabled was generating the occasional DMAR warning. "The ordering in the previous code was to rewrite the GTT table before unmapping the pages and that makes sense to me." This is his stable patch ported to d-i-n. Reported-by: Dave Airlie <airlied@redhat.com> Original-patch-by: Dave Airlie <airlied@redhat.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Record the error batchbuffer on each ringChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Include TLB miss overhead for computing WMChris Wilson
The docs recommend that if 8 display lines fit inside the FIFO buffer, then the number of watermark entries should be increased to hide the latency of filling the rest of the FIFO buffer. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Propagate error from flushing the ringChris Wilson
... in order to avoid a BUG() and potential unbounded waits. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: detect & report PCH display error interruptsJesse Barnes
FDI and the transcoders can fail for various reasons, so detect those conditions and report on them. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: cleanup rc6 codeJesse Barnes
Cleanup several aspects of the rc6 code: - misnamed intel_disable_clock_gating function (was only about rc6) - remove commented call to intel_disable_clock_gating - rc6 enabling code belongs in its own function (allows us to move the actual clock gating enable call back into restore_state) - allocate power & render contexts up front, only free on unload (avoids ugly lazy init at rc6 enable time) Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: checkpatch cleanup] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: fix rc6 enabling around suspend/resumeJesse Barnes
Enabling RC6 implies setting a graphics context. Make sure we do that only after the ring has been enabled, otherwise our ring commands will hang. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: re-enable rc6 support for Ironlake+Jesse Barnes
Re-enable rc6 support on Ironlake for power savings. Adds a debugfs file to check current RC state, adds a missing workaround for Ironlake MI_SET_CONTEXT instructions, and renames MCHBAR_RENDER_STANDBY to RSTDBYCTL to match the docs. Keep RC6 and the power context disabled on pre-ILK. It only seems to hang and doesn't save any power. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Make the ring IMR handling privateChris Wilson
As the IMR for the USER interrupts are not modified elsewhere, we can separate the spinlock used for these from that of hpd and pipestats. Those two IMR are manipulated under an IRQ and so need heavier locking. Reported-and-tested-by: Alexey Fisher <bug-track@fisher-privat.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/ringbuffer: Simplify the ring irq refcountingChris Wilson
... and move it under the spinlock to gain the appropriate memory barriers. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32752 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/debugfs: Show the per-ring IMRChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Mask USER interrupts on gen6 (until required)Chris Wilson
Otherwise we may consume 20% of the CPU just handling IRQs whilst rendering. Ouch. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Handle ringbuffer stalls when flushingChris Wilson
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Enforce write ordering through the GTTChris Wilson
We need to ensure that writes through the GTT land before any modification to the MMIO registers and so must impose a mandatory write barrier when flushing the GTT domain. This was revealed by relaxing the write ordering by experimentally mapping the registers and the GATT as write-combining. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Remove impossible testChris Wilson
As has_gem is unconditionally set to true, the conditional immediately following that assignment is superfluous. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: avoid reading non-existent PLL reg on Ironlake+Jesse Barnes
These functions need to be reworked for Ironlake and above, but until then at least avoid reading non-existent registers. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: combine with a gratuitous tidy] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: add 'reset' parameterChris Wilson
When bringing up new hardware, or otherwise experimenting, GPU hangs are a way of life. However, the automatic GPU reset can do more harm than good under these circumstances, as we may wish to capture a full trace for debugging. Based on a patch by Zhenyu Wang. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: fix the wrong latency value while computing wm0Yuanhan Liu
On Ironlake, the LP0 latency is hardcoded and in ns unit, while on Sandybridge, it comes from a register and with unit 0.1 us. So, fix the wrong latency value while computing wm0 on Ironlake and Sandybridge. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: support low power watermarks on IronlakeJesse Barnes
This patch actually makes the watermark code even uglier (if that's possible), but has the advantage of sharing code between SNB and ILK at least. Longer term we should refactor the watermark stuff into its own file and clean it up now that we know how it's supposed to work. Supporting WM2 on my Vaio reduced power consumption by around 0.5W, so this patch is definitely worthwhile (though it also needs lots of test coverage). Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> [ickle: pass the watermark structs arounds] Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11agp/intel: Flush the chipset write buffers when changing GTT baseChris Wilson
Flush the chipset write buffers before and after adjusting the GTT base register, just in case. We only modify this value upon initialisation (boot and resume) so there should be no outstanding writes, however there are always those persistent PGTBL_ER that keep getting reported upon resume. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Workaround erratum on i830 for TAIL pointer within last 2 cachelinesChris Wilson
On i830 if the tail pointer is set to within 2 cachelines of the end of the buffer, the chip may hang. So instead if the tail were to land in that location, we pad the end of the buffer with NOPs, and start again at the beginning. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: Use the mappable sizes determined by GTT for consistency.Chris Wilson
There should be no difference, but we can eliminate redundant code. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915: support overclocking on Sandy BridgeJesse Barnes
In some configuration, the PCU may allow us to overclock the GPU. Check for this case and adjust the max frequency as appropriate. Also initialize the min/max frequencies to default values as indicated by hardware. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/lvds: Always use 0 to disable the pfit controllerChris Wilson
... and just any combination of bits & ~PFIT_ENABLE. This way we do not attempt disable to the panel fitter controller uselessly upon intel_lvds_disable(). Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2011-01-11drm/i915/panel: Only record the backlight level when it is enabledChris Wilson
By tracking the current status of the backlight we can prevent recording the value of the current backlight when we have disabled it. And so prevent restoring it to 'off' after an unbalanced sequence of intel_lvds_disable/enable. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=22672 Tested-by: Alex Riesen <raa.lkml@gmail.com> Tested-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915/sdvo: Defer detection of output capabilities until probingChris Wilson
Alex Fiestas reported an issue with his HDMI connector being misdetected as DVI unless he had something connected upon boot. By moving the decision as to whether to use HDMI or DVI encoding for the HDMI capable output until we probe the monitor means that we should avoid sending a HDMI signal to a DVI monitor and also correctly detect hardware like Alex's. However, to really determine what connector is soldered onto the wire we need to inspect the VBT sdvo child devices - but can we trust it? Reported-by: Alex Fiestas <alex@eyeos.org> Tested-by: Alex Fiestas <alex@eyeos.org> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=32828 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
2011-01-11drm/i915: fix calculation of eDP signal levels on SandybridgeYuanhan Liu
Some voltage swing/pre-emphasis level use the same value on eDP Sandybridge, like 400mv_0db and 600mv_0db are with the same value of (0x0 << 22). So, fix them, and point out the value if it isn't a supported voltage swing/pre-emphasis level. Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: stable@kernel.org
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