If the master mtd does not have any slave mtd partitions,
and its numeraseregions is one(only has one erease block), and
we attach the master mtd with : ubiattach -m 0 -d 0
We will meet the error:
-------------------------------------------------------
root@freescale ~$ ubiattach /dev/ubi_ctrl -m 0 -d 0
UBI: attaching mtd0 to ubi0
UBI error: io_init: multiple regions, not implemented
ubiattach: error!: cannot attach mtd0
error 22 (Invalid argument)
-------------------------------------------------------
In fact, if there is only one "erase block", we should not
prevent the attach.
This patch fixes it.
Signed-off-by: Huang Shijie <b32955@freescale.com>
(cherry picked from commit 361cdc47fc4c4db31c5485560cdabd94f409bd81)
(cherry picked from commit ebee7d74914fad3cf7223af84496811c9d2488a1)
4188831115