From: Jan Kara <jack@suse.cz>
Date: Wed, 22 Oct 2014 13:34:21 +0000 (+0200)
Subject: null_blk: Cleanup error recovery in null_add_dev()
X-Git-Tag: omap-for-v3.19/fixes-not-urgent-part1~40^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31f9690e6eaf549f3e643f6a8f7dab84fd31997a;p=pandora-kernel.git

null_blk: Cleanup error recovery in null_add_dev()

When creation of queues fails in init_driver_queues(), we free the
queues. But null_add_dev() doesn't test for this failure and continues
with the setup leading to strange consequences, likely oops. Fix the
problem by testing whether init_driver_queues() failed and do proper
error cleanup.

Coverity-id: 1148005
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>
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