From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Mon, 14 Jul 2008 07:59:20 +0000 (+0200)
Subject: [S390] cio: fix double unregistering of subchannels
X-Git-Tag: v2.6.27-rc1~1112^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef60cd13ecee0ccf2439d63013cbfc798aea2bb9;p=pandora-kernel.git

[S390] cio: fix double unregistering of subchannels

In some cases where the channel subsystem decides to drop a subchannel
device device_unregister may be called twice, which results in an oops.
The patch prevents this by only unregistering registered devices.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

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