From: Alex Hung <alex.hung@xxxxxxx>
[WHY & HOW]
dc_link_detect returns a boolean value which can be used to print debug
messages when it fails.
This fixes 1 CHECKED_RETURN issue reported by Coverity.
Reviewed-by: Rodrigo Siqueira <rodrigo.siqueira@xxxxxxx>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Alex Hung <alex.hung@xxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 62cb59f00929..db56b0aa5454 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -3804,9 +3804,12 @@ static int trigger_hpd_mst_set(void *data, u64 val)
if (aconnector->dc_link->type == dc_connection_mst_branch &&
aconnector->mst_mgr.aux) {
mutex_lock(&adev->dm.dc_lock);
- dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD);
+ ret = dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD);
mutex_unlock(&adev->dm.dc_lock);
+ if (!ret)
+ DRM_ERROR("DM_MST: Failed to detect dc link!");
+
ret = drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true);
if (ret < 0)
DRM_ERROR("DM_MST: Failed to set the device into MST mode!");
--
2.39.2
