From: Chao Yu <chao2.yu@samsung.com>
Date: Thu, 23 Apr 2015 16:47:44 +0000 (-0600)
Subject: elevator: fix double release of elevator module
X-Git-Tag: omap-for-v4.2/omap1-v2~18^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8406a4d56ea94d1d91f62cab3bed15399bac73cb;p=pandora-kernel.git

elevator: fix double release of elevator module

Our issue is descripted in below call path:
->elevator_init
 ->elevator_init_fn
  ->{cfq,deadline,noop}_init_queue
   ->elevator_alloc
    ->kzalloc_node
   fail to call kzalloc_node and then put module in elevator_alloc;
fail to call elevator_init_fn and then put module again in elevator_init.

Remove elevator_put invoking in error path of elevator_alloc to avoid
double release issue.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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