From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Tue, 16 Apr 2013 12:17:15 +0000 (+0200)
Subject: s390/pci: do not read data after failed load
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~146^2~20
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b170bad40dab1a1684d629b37cb65a5281d35bd8;p=pandora-kernel.git

s390/pci: do not read data after failed load

If a pci load instruction fails the content of the register where the
data is stored is possibly unchanged. Fix the inline assembly wrapper
__pcilg to not return stale data. Additionally fix the callers of this
function who access uninitialized variables.

Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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