diff --git a/drivers/md/md.c b/drivers/md/md.c
index b01e458d31e94ce9eba98b9300366121de550619..95c0b644a5b9dc57cccae598350e949e578efd1e 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -4283,6 +4283,8 @@ new_dev_store(struct mddev *mddev, const char *buf, size_t len)
 	if (err)
 		export_rdev(rdev);
 	mddev_unlock(mddev);
+	if (!err)
+		md_new_event(mddev);
 	return err ? err : len;
 }