[PATCH v2 3/3] drm/dp_mst: Add __must_check to drm_dp_mst_topology_mgr_resume()

Lyude Paul lyude at redhat.com
Tue Jan 8 21:11:29 UTC 2019

Since I've had to fix two cases of drivers not checking the return code
from this function, let's make the compiler complain so this doesn't
come up again in the future.

Changes since v1:
* Remove unneeded __must_check in function declaration - danvet

Signed-off-by: Lyude Paul <lyude at redhat.com>
Cc: Jerry Zuo <Jerry.Zuo at amd.com>
Reviewed-by: Daniel Vetter <daniel at ffwll.ch>
Reviewed-by: Harry Wentland <harry.wentland at amd.com>
 include/drm/drm_dp_mst_helper.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/drm/drm_dp_mst_helper.h b/include/drm/drm_dp_mst_helper.h
index 371cc2816477..4355b55d0081 100644
--- a/include/drm/drm_dp_mst_helper.h
+++ b/include/drm/drm_dp_mst_helper.h
@@ -614,7 +614,8 @@ void drm_dp_mst_dump_topology(struct seq_file *m,
 			      struct drm_dp_mst_topology_mgr *mgr);
 void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr);
-int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr);
+int __must_check
+drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr);
 struct drm_dp_mst_topology_state *drm_atomic_get_mst_topology_state(struct drm_atomic_state *state,
 								    struct drm_dp_mst_topology_mgr *mgr);
 int drm_dp_atomic_find_vcpi_slots(struct drm_atomic_state *state,

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