From: Tejun Heo <htejun@gmail.com>
Date: Wed, 5 Dec 2007 07:43:07 +0000 (+0900)
Subject: libata: update ->data_xfer hook for ATAPI
X-Git-Tag: v2.6.25-rc1~1233^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55dba3120fbcbea6800f9a18503d25f73212a347;p=pandora-kernel.git

libata: update ->data_xfer hook for ATAPI

Depending on how many bytes are transferred as a unit, PIO data
transfer may consume more bytes than requested.  Knowing how much
data is consumed is necessary to determine how much is left for
draining.  This patch update ->data_xfer such that it returns the
number of consumed bytes.

While at it, it also makes the following changes.

* s/adev/dev/
* use READ/WRITE constants for rw indication
* misc clean ups

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

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