From 683c3dcef439f969b2c7fd09b60144cb4e2155a5 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Thu, 22 Nov 2012 15:56:39 +0100 Subject: [PATCH] s390/ccwgroup: allow drivers to call set_{on,off}line Allow drivers to enable/disable ccwgroup devices. Acked-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/ccwgroup.h | 3 +++ 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 01a905eb11e0..23723ce5ca7a 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 9c8e117c7d3a..84846c2b96d3 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, -- 2.34.1