tree e9a1cdeaaa0862bd8d64483b14c0883357766a48
parent 3deb9979c7319bc7846d1aac528a9db85162960a
author Masahiro Yamada <yamada.masahiro@socionext.com> 1490861705 +0900
committer Boris Brezillon <boris.brezillon@free-electrons.com> 1493122718 +0200

mtd: nand: allow drivers to request minimum alignment for passed buffer

In some cases, nand_do_{read,write}_ops is passed with unaligned
ops->datbuf.  Drivers using DMA will be unhappy about unaligned
buffer.

The new struct member, buf_align, represents the minimum alignment
the driver require for the buffer.  If the buffer passed from the
upper MTD layer does not have enough alignment, nand_do_*_ops will
use bufpoi.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>