--- zzzz-none-000/linux-4.9.218/drivers/mtd/ubi/vmt.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/drivers/mtd/ubi/vmt.c	2023-03-29 10:59:06.000000000 +0000
@@ -348,6 +348,7 @@
 	ubi_err(ubi, "cannot create volume %d, error %d", vol_id, err);
 	return err;
 }
+EXPORT_SYMBOL_GPL(ubi_create_volume);
 
 /**
  * ubi_remove_volume - remove volume.