tree 4e04478404c74372a01904616a013a491e7c400f
parent 6faa4ed74df2d83cbb959ba799032da4249893b6
author Simon Glass <sjg@chromium.org> 1501349694 -0600
committer Jaehoon Chung <jh80.chung@samsung.com> 1502955856 +0900

dm: blk: Add a generic function for block device commands

Most block devices provide a command (e.g. 'sata', 'scsi', 'ide') and
these commands generally do the same thing. This makes it harder to
maintain this code and keep it consistent.

We now have a block device interface which is either implemented by driver
model (when CONFIG_BLK is enabled) or with a legacy interface. Therefore
it is possible to handle most of what these commands do with generic code.

Add a new generic function to process block-device commands using the
interface type and the current device number for that type.

Signed-off-by: Simon Glass <sjg@chromium.org>