diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index 04f4a31ed27a..2c5649e433df 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -108,6 +108,7 @@ static void drm_panel_add_release(void *data)
 
 /**
  * devm_drm_panel_add - add a panel to the global registry using devres
+ * @dev: device to which the panel is attached
  * @panel: panel to add
  *
  * Add a panel to the global registry so that it can be looked