From: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Date: Mon, 7 Dec 2009 11:51:23 +0000 (+0100)
Subject: [S390] cio: ensure proper locking during device recognition
X-Git-Tag: v2.6.33-rc1~349^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f5bd3848bfc56de4c32ef6971a6a966776204bb;p=pandora-kernel.git

[S390] cio: ensure proper locking during device recognition

Device recognition needs to be started with the ccw device lock
held to prevent race conditions between I/O starting and interrupt
reception.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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