diff options
| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2012-11-22 15:56:39 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-11-23 11:14:35 +0100 |
| commit | 683c3dcef439f969b2c7fd09b60144cb4e2155a5 (patch) | |
| tree | 9c83a5059e930bc9aa81e3c96b997020e6f7713c | |
| parent | cff971026d7c19f67f9312e753bb06f18b6cdae7 (diff) | |
s390/ccwgroup: allow drivers to call set_{on,off}line
Allow drivers to enable/disable ccwgroup devices.
Acked-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/ccwgroup.h | 3 | ||||
| -rw-r--r-- | drivers/s390/cio/ccwgroup.c | 22 |
2 files changed, 23 insertions, 2 deletions
diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index 01a905eb11e..23723ce5ca7 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -59,6 +59,9 @@ extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver); int ccwgroup_create_dev(struct device *root, struct ccwgroup_driver *gdrv, int num_devices, const char *buf); +extern int ccwgroup_set_online(struct ccwgroup_device *gdev); +extern int ccwgroup_set_offline(struct ccwgroup_device *gdev); + extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev); extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev); diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index 9c8e117c7d3..84846c2b96d 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -65,7 +65,15 @@ static void __ccwgroup_remove_cdev_refs(struct ccwgroup_device *gdev) } } -static int ccwgroup_set_online(struct ccwgroup_device *gdev) +/** + * ccwgroup_set_online() - enable a ccwgroup device + * @gdev: target ccwgroup device + * + * This function attempts to put the ccwgroup device into the online state. + * Returns: + * %0 on success and a negative error value on failure. + */ +int ccwgroup_set_online(struct ccwgroup_device *gdev) { struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); int ret = -EINVAL; @@ -84,8 +92,17 @@ out: atomic_set(&gdev->onoff, 0); return ret; } +EXPORT_SYMBOL(ccwgroup_set_online); -static int ccwgroup_set_offline(struct ccwgroup_device *gdev) +/** + * ccwgroup_set_offline() - disable a ccwgroup device + * @gdev: target ccwgroup device + * + * This function attempts to put the ccwgroup device into the offline state. + * Returns: + * %0 on success and a negative error value on failure. + */ +int ccwgroup_set_offline(struct ccwgroup_device *gdev) { struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver); int ret = -EINVAL; @@ -104,6 +121,7 @@ out: atomic_set(&gdev->onoff, 0); return ret; } +EXPORT_SYMBOL(ccwgroup_set_offline); static ssize_t ccwgroup_online_store(struct device *dev, struct device_attribute *attr, |