35 static void __ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)  in __ccwgroup_remove_symlinks()  argument
40 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_remove_symlinks()
42 		sysfs_remove_link(&gdev->dev.kobj, str);  in __ccwgroup_remove_symlinks()
43 		sysfs_remove_link(&gdev->cdev[i]->dev.kobj, "group_device");  in __ccwgroup_remove_symlinks()
51 static void __ccwgroup_remove_cdev_refs(struct ccwgroup_device *gdev)  in __ccwgroup_remove_cdev_refs()  argument
56 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_remove_cdev_refs()
57 		cdev = gdev->cdev[i];  in __ccwgroup_remove_cdev_refs()
63 		gdev->cdev[i] = NULL;  in __ccwgroup_remove_cdev_refs()
76 int ccwgroup_set_online(struct ccwgroup_device *gdev)  in ccwgroup_set_online()  argument
78 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_set_online()
81 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_set_online()
83 	if (gdev->state == CCWGROUP_ONLINE)  in ccwgroup_set_online()
86 		ret = gdrv->set_online(gdev);  in ccwgroup_set_online()
90 	gdev->state = CCWGROUP_ONLINE;  in ccwgroup_set_online()
92 	atomic_set(&gdev->onoff, 0);  in ccwgroup_set_online()
105 int ccwgroup_set_offline(struct ccwgroup_device *gdev)  in ccwgroup_set_offline()  argument
107 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_set_offline()
110 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_set_offline()
112 	if (gdev->state == CCWGROUP_OFFLINE)  in ccwgroup_set_offline()
115 		ret = gdrv->set_offline(gdev);  in ccwgroup_set_offline()
119 	gdev->state = CCWGROUP_OFFLINE;  in ccwgroup_set_offline()
121 	atomic_set(&gdev->onoff, 0);  in ccwgroup_set_offline()
130 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_online_store()  local
145 		ret = ccwgroup_set_online(gdev);  in ccwgroup_online_store()
147 		ret = ccwgroup_set_offline(gdev);  in ccwgroup_online_store()
159 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_online_show()  local
162 	online = (gdev->state == CCWGROUP_ONLINE) ? 1 : 0;  in ccwgroup_online_show()
171 static void ccwgroup_ungroup(struct ccwgroup_device *gdev)  in ccwgroup_ungroup()  argument
173 	mutex_lock(&gdev->reg_mutex);  in ccwgroup_ungroup()
174 	if (device_is_registered(&gdev->dev)) {  in ccwgroup_ungroup()
175 		__ccwgroup_remove_symlinks(gdev);  in ccwgroup_ungroup()
176 		device_unregister(&gdev->dev);  in ccwgroup_ungroup()
177 		__ccwgroup_remove_cdev_refs(gdev);  in ccwgroup_ungroup()
179 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_ungroup()
186 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_ungroup_store()  local
190 	if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)  in ccwgroup_ungroup_store()
192 	if (gdev->state != CCWGROUP_OFFLINE) {  in ccwgroup_ungroup_store()
198 		ccwgroup_ungroup(gdev);  in ccwgroup_ungroup_store()
204 		atomic_set(&gdev->onoff, 0);  in ccwgroup_ungroup_store()
227 	struct ccwgroup_device *gdev =  in ccwgroup_ungroup_workfn()  local
230 	ccwgroup_ungroup(gdev);  in ccwgroup_ungroup_workfn()
231 	put_device(&gdev->dev);  in ccwgroup_ungroup_workfn()
239 static int __ccwgroup_create_symlinks(struct ccwgroup_device *gdev)  in __ccwgroup_create_symlinks()  argument
244 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_create_symlinks()
245 		rc = sysfs_create_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
246 				       &gdev->dev.kobj, "group_device");  in __ccwgroup_create_symlinks()
249 				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
254 	for (i = 0; i < gdev->count; i++) {  in __ccwgroup_create_symlinks()
256 		rc = sysfs_create_link(&gdev->dev.kobj,  in __ccwgroup_create_symlinks()
257 				       &gdev->cdev[i]->dev.kobj, str);  in __ccwgroup_create_symlinks()
261 				sysfs_remove_link(&gdev->dev.kobj, str);  in __ccwgroup_create_symlinks()
263 			for (i = 0; i < gdev->count; i++)  in __ccwgroup_create_symlinks()
264 				sysfs_remove_link(&gdev->cdev[i]->dev.kobj,  in __ccwgroup_create_symlinks()
321 	struct ccwgroup_device *gdev;  in ccwgroup_create_dev()  local
325 	gdev = kzalloc(sizeof(*gdev) + num_devices * sizeof(gdev->cdev[0]),  in ccwgroup_create_dev()
327 	if (!gdev)  in ccwgroup_create_dev()
330 	atomic_set(&gdev->onoff, 0);  in ccwgroup_create_dev()
331 	mutex_init(&gdev->reg_mutex);  in ccwgroup_create_dev()
332 	mutex_lock(&gdev->reg_mutex);  in ccwgroup_create_dev()
333 	INIT_WORK(&gdev->ungroup_work, ccwgroup_ungroup_workfn);  in ccwgroup_create_dev()
334 	gdev->count = num_devices;  in ccwgroup_create_dev()
335 	gdev->dev.bus = &ccwgroup_bus_type;  in ccwgroup_create_dev()
336 	gdev->dev.parent = parent;  in ccwgroup_create_dev()
337 	gdev->dev.release = ccwgroup_release;  in ccwgroup_create_dev()
338 	device_initialize(&gdev->dev);  in ccwgroup_create_dev()
344 		gdev->cdev[i] = get_ccwdev_by_dev_id(&dev_id);  in ccwgroup_create_dev()
349 		if (!gdev->cdev[i] || !gdev->cdev[i]->drv ||  in ccwgroup_create_dev()
350 		    gdev->cdev[i]->drv != gdev->cdev[0]->drv ||  in ccwgroup_create_dev()
351 		    gdev->cdev[i]->id.driver_info !=  in ccwgroup_create_dev()
352 		    gdev->cdev[0]->id.driver_info) {  in ccwgroup_create_dev()
357 		spin_lock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
358 		if (dev_get_drvdata(&gdev->cdev[i]->dev)) {  in ccwgroup_create_dev()
359 			spin_unlock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
363 		dev_set_drvdata(&gdev->cdev[i]->dev, gdev);  in ccwgroup_create_dev()
364 		spin_unlock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
377 	dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev));  in ccwgroup_create_dev()
378 	gdev->dev.groups = ccwgroup_attr_groups;  in ccwgroup_create_dev()
381 		gdev->dev.driver = &gdrv->driver;  in ccwgroup_create_dev()
382 		rc = gdrv->setup ? gdrv->setup(gdev) : 0;  in ccwgroup_create_dev()
386 	rc = device_add(&gdev->dev);  in ccwgroup_create_dev()
389 	rc = __ccwgroup_create_symlinks(gdev);  in ccwgroup_create_dev()
391 		device_del(&gdev->dev);  in ccwgroup_create_dev()
394 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_create_dev()
398 		if (gdev->cdev[i]) {  in ccwgroup_create_dev()
399 			spin_lock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
400 			if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)  in ccwgroup_create_dev()
401 				dev_set_drvdata(&gdev->cdev[i]->dev, NULL);  in ccwgroup_create_dev()
402 			spin_unlock_irq(gdev->cdev[i]->ccwlock);  in ccwgroup_create_dev()
403 			put_device(&gdev->cdev[i]->dev);  in ccwgroup_create_dev()
404 			gdev->cdev[i] = NULL;  in ccwgroup_create_dev()
406 	mutex_unlock(&gdev->reg_mutex);  in ccwgroup_create_dev()
407 	put_device(&gdev->dev);  in ccwgroup_create_dev()
415 	struct ccwgroup_device *gdev = to_ccwgroupdev(data);  in ccwgroup_notifier()  local
418 		get_device(&gdev->dev);  in ccwgroup_notifier()
419 		schedule_work(&gdev->ungroup_work);  in ccwgroup_notifier()
457 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_remove()  local
463 		gdrv->remove(gdev);  in ccwgroup_remove()
470 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_shutdown()  local
476 		gdrv->shutdown(gdev);  in ccwgroup_shutdown()
481 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_pm_prepare()  local
482 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_pm_prepare()
485 	if (atomic_read(&gdev->onoff))  in ccwgroup_pm_prepare()
488 	if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE)  in ccwgroup_pm_prepare()
491 	return gdrv->prepare ? gdrv->prepare(gdev) : 0;  in ccwgroup_pm_prepare()
496 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_pm_complete()  local
499 	if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE)  in ccwgroup_pm_complete()
503 		gdrv->complete(gdev);  in ccwgroup_pm_complete()
508 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_pm_freeze()  local
509 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_pm_freeze()
511 	if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE)  in ccwgroup_pm_freeze()
514 	return gdrv->freeze ? gdrv->freeze(gdev) : 0;  in ccwgroup_pm_freeze()
519 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_pm_thaw()  local
520 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_pm_thaw()
522 	if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE)  in ccwgroup_pm_thaw()
525 	return gdrv->thaw ? gdrv->thaw(gdev) : 0;  in ccwgroup_pm_thaw()
530 	struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_pm_restore()  local
531 	struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);  in ccwgroup_pm_restore()
533 	if (!gdev->dev.driver || gdev->state != CCWGROUP_ONLINE)  in ccwgroup_pm_restore()
536 	return gdrv->restore ? gdrv->restore(gdev) : 0;  in ccwgroup_pm_restore()
587 		struct ccwgroup_device *gdev = to_ccwgroupdev(dev);  in ccwgroup_driver_unregister()  local
589 		ccwgroup_ungroup(gdev);  in ccwgroup_driver_unregister()
621 	struct ccwgroup_device *gdev;  in ccwgroup_remove_ccwdev()  local
627 	gdev = dev_get_drvdata(&cdev->dev);  in ccwgroup_remove_ccwdev()
628 	if (!gdev) {  in ccwgroup_remove_ccwdev()
633 	get_device(&gdev->dev);  in ccwgroup_remove_ccwdev()
636 	ccwgroup_ungroup(gdev);  in ccwgroup_remove_ccwdev()
638 	put_device(&gdev->dev);  in ccwgroup_remove_ccwdev()