diff --git a/drivers/gpu/drm/drm_of.c b/drivers/gpu/drm/drm_of.c
index 2763a5ec845b0c14bff58b8aed4d8cb58d80d0a9..f2f71d71494a276411ff4d29e4884bbd8b558a99 100644
--- a/drivers/gpu/drm/drm_of.c
+++ b/drivers/gpu/drm/drm_of.c
@@ -217,9 +217,11 @@ int drm_of_encoder_active_endpoint(struct device_node *node,
 }
 EXPORT_SYMBOL_GPL(drm_of_encoder_active_endpoint);
 
-/*
+/**
  * drm_of_find_panel_or_bridge - return connected panel or bridge device
  * @np: device tree node containing encoder output ports
+ * @port: port in the device tree node
+ * @endpoint: endpoint in the device tree node
  * @panel: pointer to hold returned drm_panel
  * @bridge: pointer to hold returned drm_bridge
  *