--- zzzz-none-000/linux-4.9.218/drivers/mtd/ubi/upd.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/drivers/mtd/ubi/upd.c	2023-03-29 10:59:06.000000000 +0000
@@ -168,6 +168,7 @@
 	vol->upd_received = 0;
 	return 0;
 }
+EXPORT_SYMBOL_GPL(ubi_start_update);
 
 /**
  * ubi_start_leb_change - start atomic LEB change.
@@ -375,6 +376,7 @@
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(ubi_more_update_data);
 
 /**
  * ubi_more_leb_change_data - accept more data for atomic LEB change.