浏览代码

drm/radeon: fix radeon_fence_wait_empty_locked

Don't block forever if there is nothing to wait for.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Rafa? Mi?ecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Christian König 11 年之前
父节点
当前提交
721529b578
共有 1 个文件被更改,包括 3 次插入0 次删除
  1. 3 0
      drivers/gpu/drm/radeon/radeon_fence.c

+ 3 - 0
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)