diff --git a/net/core/devlink.c b/net/core/devlink.c
index 0f7078db1280..2afbeb6eca67 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -12505,6 +12505,8 @@ int devlink_compat_switch_id_get(struct net_device *dev,
 	 * devlink_port instance cannot disappear in the middle. No need to take
 	 * any devlink lock as only permanent values are accessed.
 	 */
+	ASSERT_RTNL();
+
 	devlink_port = netdev_to_devlink_port(dev);
 	if (!devlink_port || !devlink_port->switch_port)
 		return -EOPNOTSUPP;