[PATCH] drm/amd/display: Fix error handling on waiting for completion

[Stylon Wang]

[Why]
In GNOME Settings->Display the switching from mirror mode to single display
occasionally causes wait_for_completion_interruptible_timeout() to return
-ERESTARTSYS and fails atomic check.

[How]
Replace the call with wait_for_completion_timeout() since the waiting for
hw_done and flip_done completion doesn't need to worry about interruption
from signal.

Signed-off-by: Stylon Wang <stylon.wang at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 4cd64529b180..b8f4ff323de1 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9844,10 +9844,10 @@ static int do_aquire_global_lock(struct drm_device *dev,
 		 * Make sure all pending HW programming completed and
 		 * page flips done
 		 */
-		ret = wait_for_completion_interruptible_timeout(&commit->hw_done, 10*HZ);
+		ret = wait_for_completion_timeout(&commit->hw_done, 10*HZ);
 
 		if (ret > 0)
-			ret = wait_for_completion_interruptible_timeout(
+			ret = wait_for_completion_timeout(
 					&commit->flip_done, 10*HZ);
 
 		if (ret == 0)
-- 
2.33.0