tree 208e2e8902c7c250d0612ad0e58ba439c317a058
parent fe8e77ea109d097236198d13a657f30bd1f33687
author Haojian Zhuang <haojian.zhuang@linaro.org> 1469672132 +0800
committer Haojian Zhuang <haojian.zhuang@linaro.org> 1470275609 +0800

io: block: fix unaligned buffer

If buffer address parameter isn't aligned, it may cause
DMA issue in block device driver, as eMMC. Now check the buffer
address. If it's not aligned, use temporary buffer in io block
driver instead.

Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>