From: Christian König <christian.koenig@xxxxxxx>
Don't block forever if there is nothing to wait for.
Signed-off-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/radeon/radeon_fence.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_fence.c b/drivers/gpu/drm/radeon/radeon_fence.c
index b8f68b2..281d14c 100644
--- a/drivers/gpu/drm/radeon/radeon_fence.c
+++ b/drivers/gpu/drm/radeon/radeon_fence.c
@@ -510,6 +510,9 @@ int radeon_fence_wait_empty_locked(struct radeon_device *rdev, int ring)
int r;
seq[ring] = rdev->fence_drv[ring].sync_seq[ring];
+ if (!seq[ring])
+ return 0;
+
r = radeon_fence_wait_seq(rdev, seq, false, false);
if (r) {
if (r == -EDEADLK)
--
1.8.1.2
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