From: Ming Lei <ming.lei@canonical.com>
Date: Fri, 15 Aug 2014 15:16:32 +0000 (+0800)
Subject: blk-mq: fix WARNING "percpu_ref_kill() called more than once!"
X-Git-Tag: omap-fixes-against-v3.17-rc3~30^2~14
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dd840087086f3b93ac20f7472b4fca59aff7b79f;p=pandora-kernel.git

blk-mq: fix WARNING "percpu_ref_kill() called more than once!"

Before doing queue release, the queue has been freezed already
by blk_cleanup_queue(), so needn't to freeze queue for deleting
tag set.

This patch fixes the WARNING of "percpu_ref_kill() called more than once!"
which is triggered during unloading block driver.

Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
---

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