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drm/i915: Add some sanity checks to unbound tracking

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A pair of universally true checks that just need to be put in the right
place depending on where in the patch sequence you go. Note that
i915_gem_object_put_pages_gtt() already gains the
BUG_ON(obj->gtt_space), but on reflection that needed to migrate to
put_pages().

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Chris Wilson 2012-08-20 10:23:27 +01:00 • committed by Daniel Vetter
parent 6c085a728c
commit c4670ad080
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/i915/i915_gem.c
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@ -1378,6 +1378,8 @@ i915_gem_object_put_pages_gtt(struct drm_i915_gem_object *obj)
int page_count = obj->base.size / PAGE_SIZE;
int ret, i;
BUG_ON(obj->gtt_space);
if (obj->pages == NULL)
return 0;
@ -2293,6 +2295,8 @@ i915_gem_object_unbind(struct drm_i915_gem_object *obj)
if (obj->pin_count)
return -EBUSY;
BUG_ON(obj->pages == NULL);
ret = i915_gem_object_finish_gpu(obj);
if (ret)
return ret;