diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c b/drivers/gpu/drm/mediatek/mtk_dp.c
index 3e1b400febde..be4de26c77f9 100644
--- a/drivers/gpu/drm/mediatek/mtk_dp.c
+++ b/drivers/gpu/drm/mediatek/mtk_dp.c
@@ -2005,7 +2005,6 @@ static enum drm_connector_status mtk_dp_bdg_detect(struct drm_bridge *bridge)
 	struct mtk_dp *mtk_dp = mtk_dp_from_bridge(bridge);
 	enum drm_connector_status ret = connector_status_disconnected;
 	bool enabled = mtk_dp->enabled;
-	u8 sink_count = 0;
 
 	if (!mtk_dp->train_info.cable_plugged_in)
 		return ret;
@@ -2020,8 +2019,8 @@ static enum drm_connector_status mtk_dp_bdg_detect(struct drm_bridge *bridge)
 	 * function, we just need to check the HPD connection to check
 	 * whether we connect to a sink device.
 	 */
-	drm_dp_dpcd_readb(&mtk_dp->aux, DP_SINK_COUNT, &sink_count);
-	if (DP_GET_SINK_COUNT(sink_count))
+
+	if (drm_dp_read_sink_count(&mtk_dp->aux) > 0)
 		ret = connector_status_connected;
 
 	if (!enabled)