From: Tejun Heo <tj@kernel.org>
Date: Sat, 18 Apr 2009 22:00:42 +0000 (+0900)
Subject: ide-taskfile: don't abuse rq->buffer
X-Git-Tag: v2.6.31-rc1~389^2~143
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d868ca24302e99a0e8a86071ca2c66273edf97d9;p=pandora-kernel.git

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>
---

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