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authorSebastian Ott <sebott@linux.vnet.ibm.com>2012-11-09 14:33:06 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2012-11-23 11:14:34 +0100
commitcff971026d7c19f67f9312e753bb06f18b6cdae7 (patch)
tree71f7dd867568fd3e8681a2eea8af060565ab8d51 /drivers/s390/cio
parentce6a04ac1b759beafc88dbc443ae5da867579eeb (diff)
downloadvexpress-lsk-cff971026d7c19f67f9312e753bb06f18b6cdae7.tar.gz
s390/ccwgroup: set_online return error when already online
Return -EINVAL if set_{on,off}line is called for already {on,off}line devices. Also return -EINVAL for drivers which do not provide a callback for set_{on,off}line. This behaviour is now consistent with the one for ccw devices. Reported-by: Stefan Raspl <raspl@linux.vnet.ibm.com> Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
-rw-r--r--drivers/s390/cio/ccwgroup.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 731470e6849..9c8e117c7d3 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -68,7 +68,7 @@ static void __ccwgroup_remove_cdev_refs(struct ccwgroup_device *gdev)
static int ccwgroup_set_online(struct ccwgroup_device *gdev)
{
struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
- int ret = 0;
+ int ret = -EINVAL;
if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;
@@ -88,7 +88,7 @@ out:
static int ccwgroup_set_offline(struct ccwgroup_device *gdev)
{
struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
- int ret = 0;
+ int ret = -EINVAL;
if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
return -EAGAIN;