s390/cio: remove pm support from IO subchannel drivers

The power-management functions are unused since the
'commit 394216275c7d ("s390: remove broken hibernate / power
management support")'. Remove these unused pm callbacks from
io-subchannel drivers.

Signed-off-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index b29fe8d50baf25677d90b1aed9310abc11a4159f..9b8ebb29e00708131568feaefe80db475c8dcf1e 100644 (file)
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -149,19 +149,6 @@ static struct css_device_id io_subchannel_ids[] = {
        { /* end of list */ },
 };
 
-static int io_subchannel_prepare(struct subchannel *sch)
-{
-       struct ccw_device *cdev;
-       /*
-        * Don't allow suspend while a ccw device registration
-        * is still outstanding.
-        */
-       cdev = sch_get_cdev(sch);
-       if (cdev && !device_is_registered(&cdev->dev))
-               return -EAGAIN;
-       return 0;
-}
-
 static int io_subchannel_settle(void)
 {
        int ret;
@@ -186,7 +173,6 @@ static struct css_driver io_subchannel_driver = {
        .probe = io_subchannel_probe,
        .remove = io_subchannel_remove,
        .shutdown = io_subchannel_shutdown,
-       .prepare = io_subchannel_prepare,
        .settle = io_subchannel_settle,
 };