From: Sebastian Ott <sebott@linux.vnet.ibm.com>
Date: Thu, 25 Apr 2013 11:01:39 +0000 (+0200)
Subject: s390/cio: fix irq statistics
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~146^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ad19b8fb07497f975aa6aba187198ce11191dd2;p=pandora-kernel.git

s390/cio: fix irq statistics

When we fetch an interrupt on the CCW console using tsch (via
ccw_device_wait_idle formerly known as wait_cons_dev) we increment
the irq count for the affected interruption class but it is not
accounted as an IO interrupt.

This is broken since commit b603d258a43b4e7339660bdd3b5c25eacd603e54
"s390: remove superfluous tpi from wait_cons_dev"

Fix it so that the sum of the individual interrupts per class matches
the number of IO interrupts again.

Reported-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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