mtd: Fix partition alignment check on multi-erasesize devices
authorBoris Brezillon <boris.brezillon@free-electrons.com>
Mon, 25 Sep 2017 08:19:57 +0000 (10:19 +0200)
committerBoris Brezillon <boris.brezillon@free-electrons.com>
Wed, 27 Sep 2017 11:53:20 +0000 (13:53 +0200)
commit7e439681af82984045efc215437ebb2ca8d33a4c
tree9b34070bcc851facbc3ca6fbd403a1fef683b9d2
parent73600b619bf8b9803a0610624a0e11f5ed8f761e
mtd: Fix partition alignment check on multi-erasesize devices

Commit 1eeef2d7483a ("mtd: handle partitioning on devices with 0
erasesize") introduced a regression on heterogeneous erase region
devices. Alignment of the partition was tested against the master
eraseblock size which can be bigger than the slave one, thus leading
to some partitions being marked as read-only.

Update wr_alignment to match this slave erasesize after this erasesize
has been determined by picking the biggest erasesize of all the regions
embedded in the MTD partition.

Reported-by: Mathias Thore <Mathias.Thore@infinera.com>
Fixes: 1eeef2d7483a ("mtd: handle partitioning on devices with 0 erasesize")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Mathias Thore <Mathias.Thore@infinera.com>
Reviewed-by: Mathias Thore <Mathias.Thore@infinera.com>
drivers/mtd/mtdpart.c