Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
 drivers/gpu/drm/drm_atomic_helper.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_atomic_helper.c 
b/drivers/gpu/drm/drm_atomic_helper.c
index bfb98fbd0e0e..05a22aeffbb0 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2261,13 +2261,13 @@ EXPORT_SYMBOL(drm_atomic_helper_cleanup_planes);
  *
  * Returns:
  *
- * Always returns 0, cannot fail yet.
+ * Returns 0 on success. Can return -ERESTARTSYS when @stall is true and the
+ * waiting for the previous commits has been interrupted.
  */
 int drm_atomic_helper_swap_state(struct drm_atomic_state *state,
                                  bool stall)
 {
-       int i;
-       long ret;
+       int i, ret;
        struct drm_connector *connector;
        struct drm_connector_state *old_conn_state, *new_conn_state;
        struct drm_crtc *crtc;
@@ -2290,12 +2290,11 @@ int drm_atomic_helper_swap_state(struct 
drm_atomic_state *state,
                        if (!commit)
                                continue;
 
-                       ret = wait_for_completion_timeout(&commit->hw_done,
-                                                         10*HZ);
-                       if (ret == 0)
-                               DRM_ERROR("[CRTC:%d:%s] hw_done timed out\n",
-                                         crtc->base.id, crtc->name);
+                       ret = 
wait_for_completion_interruptible(&commit->hw_done);
                        drm_crtc_commit_put(commit);
+
+                       if (ret)
+                               return ret;
                }
        }
 
-- 
2.11.0

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