mtd: initialize writebufsize in the MTD object of a partition

Propagate the writebufsize to the partition's MTD object so
that UBI can set correct value for it's minimal I/O size
using the writebufsize field of MTD object of the partition.

By previous patches we added proper writebufsize field
initialization. Next patch can now change UBI to use
this field for setting the minimal I/O size.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

2 files changed, 2 insertions, 0 deletions

diff --git a/drivers/mtd/mtdconcat.c b/drivers/mtd/mtdconcat.c
index bf8de0943103..5f5777bd3f75 100644
--- a/drivers/mtd/mtdconcat.c
+++ b/drivers/mtd/mtdconcat.c
@@ -776,6 +776,7 @@ struct mtd_info *mtd_concat_create(struct mtd_info *subdev[],	/* subdevices to c
         concat->mtd.size = subdev[0]->size;
         concat->mtd.erasesize = subdev[0]->erasesize;
         concat->mtd.writesize = subdev[0]->writesize;
+        concat->mtd.writebufsize = subdev[0]->writebufsize;
         concat->mtd.subpage_sft = subdev[0]->subpage_sft;
         concat->mtd.oobsize = subdev[0]->oobsize;
         concat->mtd.oobavail = subdev[0]->oobavail;
diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c
index 1047ff0a4f55..b910a37baed8 100644
--- a/drivers/mtd/mtdpart.c
+++ b/drivers/mtd/mtdpart.c
@@ -384,6 +384,7 @@ static struct mtd_part *allocate_partition(struct mtd_info *master,
         slave->mtd.flags = master->flags & ~part->mask_flags;
         slave->mtd.size = part->size;
         slave->mtd.writesize = master->writesize;
+        slave->mtd.writebufsize = master->writebufsize;
         slave->mtd.oobsize = master->oobsize;
         slave->mtd.oobavail = master->oobavail;
         slave->mtd.subpage_sft = master->subpage_sft;