drm/amd/display: Fix in overriding DP drive settings

[Why & How]
Check always_match_dpcd_with_hw_lane_settings bit before
overriding the DP drive settings

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Alan Liu <HaoPing.Liu@amd.com>
Signed-off-by: George Shen <george.shen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index ef77147..9f873d2 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -1674,8 +1674,9 @@ static void override_training_settings(
                        : POST_CURSOR2_DISABLED;
        }
 
-       dp_hw_to_dpcd_lane_settings(lt_settings,
-                       lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
+       if (lt_settings->always_match_dpcd_with_hw_lane_settings)
+               dp_hw_to_dpcd_lane_settings(lt_settings,
+                               lt_settings->hw_lane_settings, lt_settings->dpcd_lane_settings);
 
        /* Initialize training timings */
        if (overrides->cr_pattern_time != NULL)