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2012-07-30Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull Exynos DRM changes from Dave Airlie: "So I totally missed Inki's pull request for -next, its fully exynos self contained." (I took just the actual commits, not Dave's two extraneous merges) * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (30 commits) drm/exynos: fixed exception to page allocation failure drm/exynos: use __free_page() to deallocate memory drm/exynos: fixed a comment to gem size. drm/exynos: removed unnecessary variable drm/exynos: do not release memory region from exporter. drm/exynos: set buffer type from exporter. drm/exynos: use alloc_page() to allocate pages. drm/exynos: fixed build warning. drm/exynos: fixed edid data setting at vidi connection request drm/exynos: check if raw edid data is fake or not for test drm/exynos: set edid fake data only for test. drm/exynos: removed unnecessary declaration. drm/exynos: fix buffer pitch calculation drm/exynos: check for null in return value of dma_buf_map_attachment() drm/exynos: return NULL if exynos_pages_to_sg fails drm/exynos: Use devm_* functions in exynos_mixer.c drm/exynos: Use devm_* functions in exynos_hdmi.c drm/exynos: Use devm_* functions in exynos_drm_fimd.c drm/exynos: Add missing static storage class specifier drm/exynos: add property for crtc mode ...
2012-07-27drm/exynos: fixed exception to page allocation failureInki Dae
this patch corrects to deallocate the pages allocated already at alloc_page failure. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: use __free_page() to deallocate memoryInki Dae
this patch uses __free_page() to deallocate the pages allocated by alloc_page() and the pages doesn't need set_parge_dirty() and mark_page_accessed() because they aren't from page cache so removes them. this patch has a pair with previous patch below, http://www.spinics.net/lists/dri-devel/msg24382.html Changelog v2: remove unnecessary arguments. Changelog v3: fix npages type. - npages can have negative value. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: fixed a comment to gem size.Inki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: removed unnecessary variableInki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: do not release memory region from exporter.Inki Dae
the region should be released by exporter once dmabuf's refcount becomes 0. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: set buffer type from exporter.Inki Dae
when fd is imported to gem, whether the memory type from exporter is contigous or not should be set to gem flag so that drm-based driver can aware of the memory type. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: use alloc_page() to allocate pages.Inki Dae
shmem_read_mapping_page_gfp() first tries to allocate pages from page cache so if pages are allocated from page cache then these pages could have valid cache line. after that cpu may read garbage data from cache once gpu operation is completed with allocated pages. so with this patch, Non-contiguous memory allocation request allocates pages from highmem through alloc_page() with GFP_HIGHUSER_MOVABLE. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: fixed build warning.Inki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: fixed edid data setting at vidi connection requestInki Dae
edid data from user should be allocated and copied into vidi context and also freed with disconnection. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: check if raw edid data is fake or not for testInki Dae
if raw edid data isn't same as fake data then it can't be tested. Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: set edid fake data only for test.Inki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: removed unnecessary declaration.Inki Dae
Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: fix buffer pitch calculationCooper Yuan
Signed-off-by: Cooper Yuan <cooperyuan@gmail.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: check for null in return value of dma_buf_map_attachment()Subash Patel
dma_buf_map_attachment() can return NULL and valid sg as return value. Hence the check for the returned scatter-gather must be using the inline function IS_ERR_OR_NULL() in place of IS_ERR() Signed-off-by: Subash Patel <subash.ramaswamy@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: return NULL if exynos_pages_to_sg failsSubash Patel
exynos_pages_to_sg() internally calls sg_kmalloc() which can return no pages when the system is under high memory crunch. One such instance is chromeos-install in the chromeos. This patch adds check for the return value of the function in subject to return NULL on failure. Signed-off-by: Subash Patel <subash.ramaswamy@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: Use devm_* functions in exynos_mixer.cSachin Kamat
devm_* functions are device managed functions and make error handling and cleanup cleaner and simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: Use devm_* functions in exynos_hdmi.cSachin Kamat
devm_* functions are device managed functions and make error handling and cleanup cleaner and simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: Use devm_* functions in exynos_drm_fimd.cSachin Kamat
devm_* functions are device managed functions and make error handling and cleanup cleaner and simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: Add missing static storage class specifierSachin Kamat
Fixes the following sparse warning: drivers/gpu/drm/exynos/exynos_drm_connector.c:199:20: warning: symbol 'exynos_drm_best_encoder' was not declared. Should it be static? Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Inki Dae <inki.dae@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
2012-07-27drm/exynos: add property for crtc modeJoonyoung Shim
This patch adds exynos specific property for crtc mode. The crtc mode property has tow modes - normal and blank. The normal mode is default mode and can use crtc normally. The blank mode turns off the private plane of crtc, so we don't see crtc screen but can see other plane screens. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: add crtc disable functionJoonyoung Shim
The crtc disable is used to turn off private plane for crtc. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: add plane enable/disableJoonyoung Shim
The plane enable/disable can control only a power of plane, so they will be helpful to handle planes with dpms. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: remove unnecessary connector dpms controlJoonyoung Shim
The connector dpms should be controlled only by DPMS property and mode set. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: fix dpms operation for mode setJoonyoung Shim
When we do mode set, the dpms mode should be ON. Don't control dpms in crtc commit function. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: add property for plane zposJoonyoung Shim
The exynos drm driver used a specific ioctl - DRM_EXYNOS_PLANE_SET_ZPOS to set zpos of plane. It can be substitute to property of plane. This patch adds a property for plane zpos and removes DRM_EXYNOS_PLANE_SET_ZPOS ioctl. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: update overlay via plane from crtcJoonyoung Shim
There is no any reason to update overlay at crtc directly because the crtc uses plane. Move its code to plane and call proper functions of plane from crtc. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: use private plane for crtcJoonyoung Shim
The crtc can use private plane instead it has overlay struct. It will be helpful use plane feature from crtc later. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: define to_exynos_plane macroJoonyoung Shim
Add macro to get struct exynos_plane from struct drm_plane pointer. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: fix to set pipe of crtcJoonyoung Shim
It is enough to set pipe of crtc to manager only when do mode_set of crtc. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-27drm/exynos: fix point to call overlay_ops->mode_setJoonyoung Shim
Call overlay->mode_set from crtc->mode_set instead of encoder->mode_set, it makes codes clearly. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
2012-07-26Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linuxLinus Torvalds
Pull drm updates from Dave Airlie: "One of the smaller drm -next pulls in ages! Ben (nouveau) has a rewrite in progress but we decided to leave it stew for another cycle, so just some fixes from him. - radeon: lots of documentation work, fixes, more ring and locking changes, pcie gen2, more dp fixes. - i915: haswell features, gpu reset fixes, /dev/agpgart removal on machines that we never used it on, more VGA/HDP fix., more DP fixes - drm core: cleanups from Daniel, sis 64-bit fixes, range allocator colouring. but yeah fairly quiet merge this time, probably because I missed half of it!" Trivial add-add conflict in include/linux/pci_regs.h * 'drm-next' of git://people.freedesktop.org/~airlied/linux: (255 commits) drm/nouveau: init vblank requests list drm/nv50: extend vblank semaphore to generic dmaobj + offset pair drm/nouveau: mark most of our ioctls as deprecated, move to compat layer drm/nouveau: move current gpuobj code out of nouveau_object.c drm/nouveau/gem: fix object reference leak in a failure path drm/nv50: rename INVALID_QUERY_OR_TEXTURE error to INVALID_OPERATION drm/nv84: decode PCRYPT errors drm/nouveau: dcb table quirk for fdo#50830 nouveau: Fix alignment requirements on src and dst addresses drm/i915: unbreak lastclose for failed driver init drm/i915: Set the context before setting up regs for the context. drm/i915: constify mode in crtc_mode_fixup drm/i915/lvds: ditch ->prepare special case drm/i915: dereferencing an error pointer drm/i915: fix invalid reference handling of the default ctx obj drm/i915: Add -EIO to the list of known errors for __wait_seqno drm/i915: Flush the context object from the CPU caches upon switching drm/radeon: fix dpms on/off on trinity/aruba v2 drm/radeon: on hotplug force link training to happen (v2) drm/radeon: fix hotplug of DP to DVI|HDMI passive adapters (v2) ...
2012-07-26Merge branch 'drm-intel-fixes' of ↵Dave Airlie
git://people.freedesktop.org/~danvet/drm-intel into drm-next Daniel writes: (this pull is the one with the bad patch dropped) First pile of fixes for 3.6 already, and I'm afraid it's a bit larger than what I'd wish for. But I've moved all the feature-y stuff to -next, so this really is all -fixes. Most of it is handling fallout from the hw context stuff, discovered now that mesa git has started using them for real. Otherwise all just small fixes: - unbreak modeset=0 on gen6+ (regressed in next) - const mismatch fix for ->mode_fixup - simplify overly clever lvds modeset code (current code can totally confuse backlights, resulting in broken panels until a full power draw restores them). - fix some fallout from the flushing_list disabling (regression only introduced in -next) - DP link train improvements (this also kills the last 3.2 dp regression afaik) - bugfix for the new ddc VGA detection on newer platforms - minor backlight fixes (one of them a -next regression) - only enable the required PM interrupts (to avoid waking up the cpu unnecessarily) - some really minor bits (workaround clarification, make coverty happy, hsw init fix) * 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel: (23 commits) drm/i915: unbreak lastclose for failed driver init drm/i915: Set the context before setting up regs for the context. drm/i915: constify mode in crtc_mode_fixup drm/i915/lvds: ditch ->prepare special case drm/i915: dereferencing an error pointer drm/i915: fix invalid reference handling of the default ctx obj drm/i915: Add -EIO to the list of known errors for __wait_seqno drm/i915: Flush the context object from the CPU caches upon switching drm/i915: Make the lock for pageflips interruptible drm/i915: don't forget the PCH backlight registers drm/i915: Insert a flush between batches if the breadcrumb was dropped drm/i915: missing error case in init status page drm/i915: mask tiled bit when updating ILK sprites drm/i915: try to train DP even harder drm/i915: kill intel_ddc_probe drm/i915: check whether we actually received an edid in detect_ddc drm/i915: fix up PCH backlight #define mixup drm/i915: Add comments to explain the BSD tail write workaround drm/i915: Disable the BLT on pre-production SNB hardware drm/i915: initialize power wells in modeset_init_hw ...
2012-07-26Merge branch 'drm-nouveau-fixes' of ↵Dave Airlie
git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-next * 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6: drm/nouveau: init vblank requests list drm/nv50: extend vblank semaphore to generic dmaobj + offset pair drm/nouveau: mark most of our ioctls as deprecated, move to compat layer drm/nouveau: move current gpuobj code out of nouveau_object.c drm/nouveau/gem: fix object reference leak in a failure path drm/nv50: rename INVALID_QUERY_OR_TEXTURE error to INVALID_OPERATION drm/nv84: decode PCRYPT errors drm/nouveau: dcb table quirk for fdo#50830 nouveau: Fix alignment requirements on src and dst addresses
2012-07-26drm/nouveau: init vblank requests listMarcin Slusarz
Fixes kernel panic when vblank interrupt triggers before first sync to vblank request. (Besides init, remove some relevant leftovers from vblank rework) Reported-by: Ortwin Glück <odi@odi.ch> Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: stable@vger.kernel.org [3.5] Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nv50: extend vblank semaphore to generic dmaobj + offset pairBen Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nouveau: mark most of our ioctls as deprecated, move to compat layerBen Skeggs
These will be replaced in the near future, the code isn't yet stable enough for this merge window however. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nouveau: move current gpuobj code out of nouveau_object.cBen Skeggs
I want this file for the new interfaces... Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nouveau/gem: fix object reference leak in a failure pathBen Skeggs
Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2012-07-26drm/nv50: rename INVALID_QUERY_OR_TEXTURE error to INVALID_OPERATIONMarcin Slusarz
Current name is misleading, because this error can be triggered by other conditions, like changing STRMOUT parameter without disabling STRMOUT first. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nv84: decode PCRYPT errorsMarcin Slusarz
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26drm/nouveau: dcb table quirk for fdo#50830Ben Skeggs
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2012-07-26nouveau: Fix alignment requirements on src and dst addressesMaarten Lankhorst
Linear copy works by adding the offset to the buffer address, which may end up not being 16-byte aligned. Some tests I've written for prime_pcopy show that the engine allows this correctly, so the restriction on lowest 4 bits of address can be lifted safely. The comments added were by envyas, I think because I used a newer version. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com> Cc: stable@vger.kernel.org
2012-07-25drm/i915: unbreak lastclose for failed driver initDaniel Vetter
We now refuse to load on gen6+ if kms is not enabled: commit 26394d9251879231b85e6c8cf899fa43e75c68f1 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Mon Mar 26 21:33:18 2012 +0200 drm/i915: refuse to load on gen6+ without kms Which results in the drm core calling our lastclose function to clean up the mess, but that one is neatly broken for such failure cases since kms has been introduced in commit 79e539453b34e35f39299a899d263b0a1f1670bd Author: Jesse Barnes <jbarnes@virtuousgeek.org> Date: Fri Nov 7 14:24:08 2008 -0800 DRM: i915: add mode setting support Reported-and-tested-by: Paulo Zanoni <przanoni@gmail.com> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915: Set the context before setting up regs for the context.Eric Anholt
Fixes failures in transform feedback on gen7 because our SOL_RESET flag was setting the transform feedback offsets in the old context (occasionally happened to be ours) instead of the new context. Signed-off-by: Eric Anholt <eric@anholt.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915: constify mode in crtc_mode_fixupDaniel Vetter
Laurent Pinchart missed this when sending in is giant constify patch: commit e811f5ae19043b2ac2c28e147a4274038e655598 Author: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Date: Tue Jul 17 17:56:50 2012 +0200 drm: Make the .mode_fixup() operations mode argument a const pointer Acked-by; Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915/lvds: ditch ->prepare special caseDaniel Vetter
LVDS is the first output where dpms on/off and prepare/commit don't perfectly match. Now the idea behind this special case seems to be that for simple resolution changes on the LVDS we don't need to stop the pipe, because (at least on newer chips) we can adjust the panel fitter on the fly. There are a few problems with the current code though: - We still stop and restart the pipe unconditionally, because the crtc helper code isn't flexible enough. - We show some ugly flickering, especially when changing crtcs (this the crtc helper would actually take into account, but we don't implement the encoder->get_crtc callback required to make this work properly). So it doesn't even work as advertised. I agree that it would be nice to do resolution changes on LVDS (and also eDP) whithout blacking the screen where the panel fitter allows to do that. But imo we should implement this as a special case a few layers up in the mode set code, akin to how we already detect simple framebuffer changes (and only update the required registers with ->mode_set_base). Until this is all in place, make our lives easier and just rip it out. Also note that this seems to fix actual bugs with enabling the lvds output, see: http://lists.freedesktop.org/archives/intel-gfx/2012-July/018614.html Cc: Takashi Iwai <tiwai@suse.de> Cc: Giacomo Comes <comes@naic.edu> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Tested-by: Takashi Iwai <tiwai@suse.de> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915: dereferencing an error pointerDan Carpenter
We need to check that "ctx" is a valid pointer before dereferencing it. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915: fix invalid reference handling of the default ctx objChris Wilson
Otherwise we end up trying to unpin a freed object and BUG. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Ben Widawsky <ben@bwidawsk.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2012-07-25drm/i915: Add -EIO to the list of known errors for __wait_seqnoChris Wilson
This prevents a WARN introduced with commit de2b998552c1534e87bfbc51ec5734b02bc89020 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Wed Jul 4 22:52:50 2012 +0200 drm/i915: don't return a spurious -EIO from intel_ring_begin Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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