--- zzzz-none-000/linux-4.9.218/drivers/mtd/ubi/eba.c	2020-04-02 15:20:41.000000000 +0000
+++ seale-7590ax-750/linux-4.9.218/drivers/mtd/ubi/eba.c	2023-03-29 10:59:06.000000000 +0000
@@ -722,6 +722,7 @@
 	leb_read_unlock(ubi, vol_id, lnum);
 	return err;
 }
+EXPORT_SYMBOL_GPL(ubi_eba_read_leb);
 
 /**
  * ubi_eba_read_leb_sg - read data into a scatter gather list.