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drm/i915: If interrupted while setting object domains, still emit the flush.

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Otherwise, we would leave the objects in an inconsistent state, such as
write_domain == 0 but on the flushing list.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Eric Anholt 2008-11-14 16:27:47 -08:00 committed by Dave Airlie
parent ce44b0ea3d
commit b670d81582
1 changed files with 13 additions and 1 deletions
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14
drivers/gpu/drm/i915/i915_gem.c
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@ -1880,8 +1880,20 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
ret = i915_gem_object_set_domain(obj,
obj->pending_read_domains,
obj->pending_write_domain);
if (ret)
if (ret) {
/* As we've partially updated domains on our buffers,
* we have to emit the flush we've accumulated
* before exiting, or we'll have broken the
* active/flushing/inactive invariants.
*
* We'll potentially have some things marked as
* being in write domains that they actually aren't,
* but that should be merely a minor performance loss.
*/
flush_domains = i915_gem_dev_set_domain(dev);
(void)i915_add_request(dev, flush_domains);
goto err;
}
}
i915_verify_inactive(dev, __FILE__, __LINE__);