diff --git a/net/core/dev.c b/net/core/dev.c
index debd9372472f..83988362805e 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -5744,6 +5744,7 @@ EXPORT_SYMBOL(netdev_refcnt_read);
 
 /**
  * netdev_wait_allrefs - wait until all references are gone.
+ * @dev: target net_device
  *
  * This is called when unregistering network devices.
  *