drm/amd/display: Add logging when setting DP sink power state fails

Log if we fail to setup sink power states.

Cc: Fangzhi Zuo <Jerry.Zuo@amd.com>
Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
index c840ef1..ba98013 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
+++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
@@ -1043,6 +1043,9 @@ static enum dc_status wake_up_aux_channel(struct dc_link *link)
                                DP_SET_POWER,
                                &dpcd_power_state,
                                sizeof(dpcd_power_state));
+               if (status < 0)
+                       DC_LOG_DC("%s: Failed to power up sink: %s\n", __func__,
+                                 dpcd_power_state == DP_SET_POWER_D0 ? "D0" : "D3");
                return DC_ERROR_UNEXPECTED;
        }