From 1842f2b1847155805f9cc8c834ef4272198b272b Mon Sep 17 00:00:00 2001
From: Cornelia Huck <cornelia.huck@de.ibm.com>
Date: Fri, 12 Oct 2007 16:11:22 +0200
Subject: [S390] cio: Disable channel measurements (cmf) on shutdown/reboot.

Disable channel measurements for all ccw devices via the ccw bus's
shutdown method. Clear residual cmf related information that may be
in the schib when setting up a new subchannel.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---
 drivers/s390/cio/device.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers/s390/cio/device.c')

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 7fb271c60c2..eea9b1de0af 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -21,6 +21,7 @@
 #include <asm/ccwdev.h>
 #include <asm/cio.h>
 #include <asm/param.h>		/* HZ */
+#include <asm/cmb.h>
 
 #include "cio.h"
 #include "cio_debug.h"
@@ -1440,6 +1441,7 @@ static void ccw_device_shutdown(struct device *dev)
 	cdev = to_ccwdev(dev);
 	if (cdev->drv && cdev->drv->shutdown)
 		cdev->drv->shutdown(cdev);
+	disable_cmf(cdev);
 }
 
 struct bus_type ccw_bus_type = {
-- 
cgit v1.2.3