drm/i915/execbuffer: Correctly clear the current object list upon EFAULT
authorChris Wilson <chris@chris-wilson.co.uk>
Mon, 10 Jan 2011 12:09:12 +0000 (12:09 +0000)
committerChris Wilson <chris@chris-wilson.co.uk>
Tue, 11 Jan 2011 22:55:29 +0000 (22:55 +0000)
commit36cf17423095882ec0f8f2c04d1bd0ee812149df
tree3ecb28846e2c19cf33d0846b8c5b24d96c933844
parent08c18323547ce6d70eab3b37eca894baf114ad85
drm/i915/execbuffer: Correctly clear the current object list upon EFAULT

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
drivers/gpu/drm/i915/i915_gem_execbuffer.c