diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 90807a6b415ca8598e83f72dd0a589c0d3cbc0b6..b1c71af88579faf4e1d2ff10ba77ef2186c83e4b 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1028,7 +1028,8 @@ EXPORT_SYMBOL(drm_dp_downstream_debug);
 
 /**
  * drm_dp_subconnector_type() - get DP branch device type
- *
+ * @dpcd: DisplayPort configuration data
+ * @port_cap: port capabilities
  */
 enum drm_mode_subconnector
 drm_dp_subconnector_type(const u8 dpcd[DP_RECEIVER_CAP_SIZE],
@@ -1079,6 +1080,10 @@ EXPORT_SYMBOL(drm_dp_subconnector_type);
 
 /**
  * drm_mode_set_dp_subconnector_property - set subconnector for DP connector
+ * @connector: connector to set property on
+ * @status: connector status
+ * @dpcd: DisplayPort configuration data
+ * @port_cap: port capabilities
  *
  * Called by a driver on every detect event.
  */