tree 8f324421031fda92240b2c500e21a3f918b84c5b
parent 83b783f62a1f55ce63def1ac802bae291f07969e
author Simon Glass <sjg@chromium.org> 1456784741 -0700
committer Simon Glass <sjg@chromium.org> 1457991290 -0600

dm: blk: Add comments to a few functions

The block interface is not well documented in the code. Pick two important
functions and add comments.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Stephen Warren <swarren@nvidia.com>