From: Stefan Haberland <stefan.haberland@de.ibm.com>
Date: Thu, 2 Apr 2015 10:27:25 +0000 (+0200)
Subject: s390/dasd: fix inability to set a DASD device offline
X-Git-Tag: omap-for-v4.1/fixes-rc1~85^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2608cd4a37479d11d0748f524a6a363ee38631f;p=pandora-kernel.git

s390/dasd: fix inability to set a DASD device offline

Fix ref counting for DASD devices leading to an inability to set a
DASD device offline.
Before a worker is scheduled the DASD device driver takes a reference
to the device. If the worker was already scheduled this reference was
never freed.
Fix by giving the reference to the DASD device free when
schedule_work() returns false.

Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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