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drm/i915: Remove the conflicting BUG_ON() 

We now attempt to free "active" objects following a GPU hang as either
the GPU will be reset or the hang is permenant. In either case, the GPU
writes will not be flushed to main memory and it should be safe to
return that memory back to the system.

The BUG_ON(active) is thus overkill and can erroneously fire after a
EIO.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Chris Wilson 2010-08-15 10:52:34 +01:00 committed by Eric Anholt
parent 90eb77baae
commit 156dadc180
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/i915/i915_gem.c
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@ -1979,8 +1979,6 @@ i915_gem_object_unbind(struct drm_gem_object *obj)
* cause memory corruption through use-after-free. * cause memory corruption through use-after-free.
*/ */
BUG_ON(obj_priv->active);
/* release the fence reg _after_ flushing */ /* release the fence reg _after_ flushing */
if (obj_priv->fence_reg != I915_FENCE_REG_NONE) if (obj_priv->fence_reg != I915_FENCE_REG_NONE)
i915_gem_clear_fence_reg(obj); i915_gem_clear_fence_reg(obj);