Commit 842315ee authored by Maarten Lankhorst's avatar Maarten Lankhorst Committed by Daniel Vetter

drm/i915: Handle return value in intel_pin_and_fence_fb_obj, v2.

-EDEADLK has special meaning in atomic, but get_fence may call
i915_find_fence_reg which can return -EDEADLK.

This has special meaning in the atomic world, so convert the error
to -EBUSY for this case.

Changes since v1:
- Add comment in the code.
Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 4740b0f2
......@@ -2397,7 +2397,18 @@ intel_pin_and_fence_fb_obj(struct drm_plane *plane,
* a fence as the cost is not that onerous.
*/
ret = i915_gem_object_get_fence(obj);
if (ret)
if (ret == -EDEADLK) {
/*
* -EDEADLK means there are no free fences
* no pending flips.
*
* This is propagated to atomic, but it uses
* -EDEADLK to force a locking recovery, so
* change the returned error to -EBUSY.
*/
ret = -EBUSY;
goto err_unpin;
} else if (ret)
goto err_unpin;
i915_gem_object_pin_fence(obj);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment