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Commit 683c3dce authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/ccwgroup: allow drivers to call set_{on,off}line 



Allow drivers to enable/disable ccwgroup devices.

Acked-by: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent cff97102

arch/s390/include/asm/ccwgroup.h

+3 −0
Original line number Diff line number Diff line
@@ -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);

drivers/s390/cio/ccwgroup.c

+20 −2
Original line number Diff line number Diff line
@@ -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 @@ static int ccwgroup_set_online(struct ccwgroup_device *gdev) 
	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 @@ static int ccwgroup_set_offline(struct ccwgroup_device *gdev) 
	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,