36 static void __ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)  in __ccwgroup_remove_symlinks()  argument
41 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_remove_symlinks()
43 		sysfs_remove_link(&gdev->dev.kobj, str);  in __ccwgroup_remove_symlinks()
44 		sysfs_remove_link(&gdev->cdev[i]->dev.kobj, "group_device");  in __ccwgroup_remove_symlinks()
56 int ccwgroup_set_online(struct ccwgroup_device *gdev)  in ccwgroup_set_online()  argument
58 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_set_online()
61 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_set_online()
63 	if (gdev->state == CCWGROUP_ONLINE)  in ccwgroup_set_online()
66 		ret = gdrv->set_online(gdev);  in ccwgroup_set_online()
70 	gdev->state = CCWGROUP_ONLINE;  in ccwgroup_set_online()
72 	atomic_set(&gdev->onoff, 0);  in ccwgroup_set_online()
86 int ccwgroup_set_offline(struct ccwgroup_device *gdev, bool call_gdrv)  in ccwgroup_set_offline()  argument
88 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_set_offline()
91 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_set_offline()
93 	if (gdev->state == CCWGROUP_OFFLINE)  in ccwgroup_set_offline()
100 		ret = gdrv->set_offline(gdev);  in ccwgroup_set_offline()
105 	gdev->state = CCWGROUP_OFFLINE;  in ccwgroup_set_offline()
107 	atomic_set(&gdev->onoff, 0);  in ccwgroup_set_offline()
116 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_online_store()  local
131 		ret = ccwgroup_set_online(gdev);  in ccwgroup_online_store()
133 		ret = ccwgroup_set_offline(gdev, true);  in ccwgroup_online_store()
145 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_online_show()  local
148 	online = (gdev->state == CCWGROUP_ONLINE) ? 1 : 0;  in ccwgroup_online_show()
157 static void ccwgroup_ungroup(struct ccwgroup_device *gdev)  in ccwgroup_ungroup()  argument
159 	mutex_lock(&gdev->reg_mutex);  in ccwgroup_ungroup()
160 	if (device_is_registered(&gdev->dev)) {  in ccwgroup_ungroup()
161 		__ccwgroup_remove_symlinks(gdev);  in ccwgroup_ungroup()
162 		device_unregister(&gdev->dev);  in ccwgroup_ungroup()
164 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_ungroup()
171 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_ungroup_store()  local
175 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_ungroup_store()
177 	if (gdev->state != CCWGROUP_OFFLINE) {  in ccwgroup_ungroup_store()
183 		ccwgroup_ungroup(gdev);  in ccwgroup_ungroup_store()
189 		atomic_set(&gdev->onoff, 0);  in ccwgroup_ungroup_store()
206 	struct ccwgroup_device *gdev =  in ccwgroup_ungroup_workfn()  local
209 	ccwgroup_ungroup(gdev);  in ccwgroup_ungroup_workfn()
210 	put_device(&gdev->dev);  in ccwgroup_ungroup_workfn()
215 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_release()  local
218 	for (i = 0; i < gdev->count; i++) {  in ccwgroup_release()
219 		struct ccw_device *cdev = gdev->cdev[i];  in ccwgroup_release()
224 			if (dev_get_drvdata(&cdev->dev) == gdev)  in ccwgroup_release()
231 	kfree(gdev);  in ccwgroup_release()
234 static int __ccwgroup_create_symlinks(struct ccwgroup_device *gdev)  in __ccwgroup_create_symlinks()  argument
239 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_create_symlinks()
240 		rc = sysfs_create_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
241 				       &gdev->dev.kobj, "group_device");  in __ccwgroup_create_symlinks()
244 				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
249 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_create_symlinks()
251 		rc = sysfs_create_link(&gdev->dev.kobj,  in __ccwgroup_create_symlinks()
252 				       &gdev->cdev[i]->dev.kobj, str);  in __ccwgroup_create_symlinks()
256 				sysfs_remove_link(&gdev->dev.kobj, str);  in __ccwgroup_create_symlinks()
258 			for (i = 0; i < gdev->count; i++)  in __ccwgroup_create_symlinks()
259 				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
316 	struct ccwgroup_device *gdev;  in ccwgroup_create_dev()  local
323 	gdev = kzalloc(struct_size(gdev, cdev, num_devices), GFP_KERNEL);  in ccwgroup_create_dev()
324 	if (!gdev)  in ccwgroup_create_dev()
327 	atomic_set(&gdev->onoff, 0);  in ccwgroup_create_dev()
328 	mutex_init(&gdev->reg_mutex);  in ccwgroup_create_dev()
329 	mutex_lock(&gdev->reg_mutex);  in ccwgroup_create_dev()
330 	INIT_WORK(&gdev->ungroup_work, ccwgroup_ungroup_workfn);  in ccwgroup_create_dev()
331 	gdev->count = num_devices;  in ccwgroup_create_dev()
332 	gdev->dev.bus = &ccwgroup_bus_type;  in ccwgroup_create_dev()
333 	gdev->dev.parent = parent;  in ccwgroup_create_dev()
334 	gdev->dev.release = ccwgroup_release;  in ccwgroup_create_dev()
335 	device_initialize(&gdev->dev);  in ccwgroup_create_dev()
341 		gdev->cdev[i] = get_ccwdev_by_dev_id(&dev_id);  in ccwgroup_create_dev()
346 		if (!gdev->cdev[i] || !gdev->cdev[i]->drv ||  in ccwgroup_create_dev()
347 		    gdev->cdev[i]->drv != gdev->cdev[0]->drv ||  in ccwgroup_create_dev()
348 		    gdev->cdev[i]->id.driver_info !=  in ccwgroup_create_dev()
349 		    gdev->cdev[0]->id.driver_info) {  in ccwgroup_create_dev()
354 		spin_lock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
355 		if (dev_get_drvdata(&gdev->cdev[i]->dev)) {  in ccwgroup_create_dev()
356 			spin_unlock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
360 		dev_set_drvdata(&gdev->cdev[i]->dev, gdev);  in ccwgroup_create_dev()
361 		spin_unlock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
375 	    gdev->cdev[0]->drv != gdrv->ccw_driver) {  in ccwgroup_create_dev()
380 	dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev));  in ccwgroup_create_dev()
383 		gdev->dev.driver = &gdrv->driver;  in ccwgroup_create_dev()
384 		rc = gdrv->setup ? gdrv->setup(gdev) : 0;  in ccwgroup_create_dev()
388 	rc = device_add(&gdev->dev);  in ccwgroup_create_dev()
391 	rc = __ccwgroup_create_symlinks(gdev);  in ccwgroup_create_dev()
393 		device_del(&gdev->dev);  in ccwgroup_create_dev()
396 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_create_dev()
399 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_create_dev()
400 	put_device(&gdev->dev);  in ccwgroup_create_dev()
408 	struct ccwgroup_device *gdev = to_ccwgroupdev(data);  in ccwgroup_notifier()  local
411 		get_device(&gdev->dev);  in ccwgroup_notifier()
412 		schedule_work(&gdev->ungroup_work);  in ccwgroup_notifier()
450 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_remove()  local
454 		gdrv->remove(gdev);  in ccwgroup_remove()
459 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_shutdown()  local
465 		gdrv->shutdown(gdev);  in ccwgroup_shutdown()
533 	struct ccwgroup_device *gdev;  in ccwgroup_remove_ccwdev()  local
539 	gdev = dev_get_drvdata(&cdev->dev);  in ccwgroup_remove_ccwdev()
540 	if (!gdev) {  in ccwgroup_remove_ccwdev()
545 	get_device(&gdev->dev);  in ccwgroup_remove_ccwdev()
548 	ccwgroup_ungroup(gdev);  in ccwgroup_remove_ccwdev()
550 	put_device(&gdev->dev);  in ccwgroup_remove_ccwdev()