From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date: Wed, 25 Feb 2009 19:28:24 +0000 (+0100)
Subject: ide: fix refcounting in device drivers
X-Git-Tag: v2.6.29-rc7~54^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8fed43684174b68f04d01d1210fd00536af790df;p=pandora-kernel.git

ide: fix refcounting in device drivers

During host driver module removal del_gendisk() results in a final
put on drive->gendev and freeing the drive by drive_release_dev().

Convert device drivers from using struct kref to use struct device
so device driver's object holds reference on ->gendev and prevents
drive from prematurely going away.

Also fix ->remove methods to not erroneously drop reference on a
host driver by using only put_device() instead of ide*_put().

Reported-by: Stanislaw Gruszka <stf_xl@wp.pl>
Tested-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
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