tree 3cd10182940039df2c99b0029ae0badf6fc5ada1
parent 7f006dc24fae158131116c9472874f12e16cf040
author Tejun Heo <tj@kernel.org> 1240092042 +0900
committer Tejun Heo <tj@kernel.org> 1240092042 +0900

ide-taskfile: don't abuse rq->buffer

Impact: rq->buffer usage cleanup

ide_raw_taskfile() directly uses rq->buffer to carry pointer to the
data buffer.  This complicates both block interface and ide backend
request handling.  Use blk_rq_map_kern() instead and drop special
handling for REQ_TYPE_ATA_TASKFILE from ide_map_sg().

Note that REQ_RW setting is moved upwards as blk_rq_map_kern() uses it
to initialize bio rw flag.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>