diff --git a/drivers/gpu/drm/drm_bridge.c b/drivers/gpu/drm/drm_bridge.c
index d6f512b73389..ba80bebb5685 100644
--- a/drivers/gpu/drm/drm_bridge.c
+++ b/drivers/gpu/drm/drm_bridge.c
@@ -282,7 +282,7 @@ static void __drm_bridge_free(struct kref *kref)
 
 /**
  * drm_bridge_get - Acquire a bridge reference
- * @bridge: DRM bridge
+ * @bridge: DRM bridge; if NULL this function does nothing
  *
  * This function increments the bridge's refcount.
  *
@@ -300,7 +300,7 @@ EXPORT_SYMBOL(drm_bridge_get);
 
 /**
  * drm_bridge_put - Release a bridge reference
- * @bridge: DRM bridge
+ * @bridge: DRM bridge; if NULL this function does nothing
  *
  * This function decrements the bridge's reference count and frees the
  * object if the reference count drops to zero.