Lines Matching defs:gdev
36 static void __ccwgroup_remove_symlinks(struct ccwgroup_device *gdev)
41 for (i = 0; i < gdev->count; i++) {
43 sysfs_remove_link(&gdev->dev.kobj, str);
44 sysfs_remove_link(&gdev->cdev[i]->dev.kobj, "group_device");
52 static void __ccwgroup_remove_cdev_refs(struct ccwgroup_device *gdev)
57 for (i = 0; i < gdev->count; i++) {
58 cdev = gdev->cdev[i];
64 gdev->cdev[i] = NULL;
71 * @gdev: target ccwgroup device
77 int ccwgroup_set_online(struct ccwgroup_device *gdev)
79 struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
82 if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
84 if (gdev->state == CCWGROUP_ONLINE)
87 ret = gdrv->set_online(gdev);
91 gdev->state = CCWGROUP_ONLINE;
93 atomic_set(&gdev->onoff, 0);
100 * @gdev: target ccwgroup device
106 int ccwgroup_set_offline(struct ccwgroup_device *gdev)
108 struct ccwgroup_driver *gdrv = to_ccwgroupdrv(gdev->dev.driver);
111 if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
113 if (gdev->state == CCWGROUP_OFFLINE)
116 ret = gdrv->set_offline(gdev);
120 gdev->state = CCWGROUP_OFFLINE;
122 atomic_set(&gdev->onoff, 0);
131 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
146 ret = ccwgroup_set_online(gdev);
148 ret = ccwgroup_set_offline(gdev);
160 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
163 online = (gdev->state == CCWGROUP_ONLINE) ? 1 : 0;
172 static void ccwgroup_ungroup(struct ccwgroup_device *gdev)
174 mutex_lock(&gdev->reg_mutex);
175 if (device_is_registered(&gdev->dev)) {
176 __ccwgroup_remove_symlinks(gdev);
177 device_unregister(&gdev->dev);
178 __ccwgroup_remove_cdev_refs(gdev);
180 mutex_unlock(&gdev->reg_mutex);
187 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
191 if (atomic_cmpxchg(&gdev->onoff, 0, 1) != 0)
193 if (gdev->state != CCWGROUP_OFFLINE) {
199 ccwgroup_ungroup(gdev);
205 atomic_set(&gdev->onoff, 0);
228 struct ccwgroup_device *gdev =
231 ccwgroup_ungroup(gdev);
232 put_device(&gdev->dev);
240 static int __ccwgroup_create_symlinks(struct ccwgroup_device *gdev)
245 for (i = 0; i < gdev->count; i++) {
246 rc = sysfs_create_link(&gdev->cdev[i]->dev.kobj,
247 &gdev->dev.kobj, "group_device");
250 sysfs_remove_link(&gdev->cdev[i]->dev.kobj,
255 for (i = 0; i < gdev->count; i++) {
257 rc = sysfs_create_link(&gdev->dev.kobj,
258 &gdev->cdev[i]->dev.kobj, str);
262 sysfs_remove_link(&gdev->dev.kobj, str);
264 for (i = 0; i < gdev->count; i++)
265 sysfs_remove_link(&gdev->cdev[i]->dev.kobj,
322 struct ccwgroup_device *gdev;
329 gdev = kzalloc(struct_size(gdev, cdev, num_devices), GFP_KERNEL);
330 if (!gdev)
333 atomic_set(&gdev->onoff, 0);
334 mutex_init(&gdev->reg_mutex);
335 mutex_lock(&gdev->reg_mutex);
336 INIT_WORK(&gdev->ungroup_work, ccwgroup_ungroup_workfn);
337 gdev->count = num_devices;
338 gdev->dev.bus = &ccwgroup_bus_type;
339 gdev->dev.parent = parent;
340 gdev->dev.release = ccwgroup_release;
341 device_initialize(&gdev->dev);
347 gdev->cdev[i] = get_ccwdev_by_dev_id(&dev_id);
352 if (!gdev->cdev[i] || !gdev->cdev[i]->drv ||
353 gdev->cdev[i]->drv != gdev->cdev[0]->drv ||
354 gdev->cdev[i]->id.driver_info !=
355 gdev->cdev[0]->id.driver_info) {
360 spin_lock_irq(gdev->cdev[i]->ccwlock);
361 if (dev_get_drvdata(&gdev->cdev[i]->dev)) {
362 spin_unlock_irq(gdev->cdev[i]->ccwlock);
366 dev_set_drvdata(&gdev->cdev[i]->dev, gdev);
367 spin_unlock_irq(gdev->cdev[i]->ccwlock);
381 gdev->cdev[0]->drv != gdrv->ccw_driver) {
386 dev_set_name(&gdev->dev, "%s", dev_name(&gdev->cdev[0]->dev));
387 gdev->dev.groups = ccwgroup_attr_groups;
390 gdev->dev.driver = &gdrv->driver;
391 rc = gdrv->setup ? gdrv->setup(gdev) : 0;
395 rc = device_add(&gdev->dev);
398 rc = __ccwgroup_create_symlinks(gdev);
400 device_del(&gdev->dev);
403 mutex_unlock(&gdev->reg_mutex);
407 if (gdev->cdev[i]) {
408 spin_lock_irq(gdev->cdev[i]->ccwlock);
409 if (dev_get_drvdata(&gdev->cdev[i]->dev) == gdev)
410 dev_set_drvdata(&gdev->cdev[i]->dev, NULL);
411 spin_unlock_irq(gdev->cdev[i]->ccwlock);
412 put_device(&gdev->cdev[i]->dev);
413 gdev->cdev[i] = NULL;
415 mutex_unlock(&gdev->reg_mutex);
416 put_device(&gdev->dev);
424 struct ccwgroup_device *gdev = to_ccwgroupdev(data);
427 get_device(&gdev->dev);
428 schedule_work(&gdev->ungroup_work);
466 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
472 gdrv->remove(gdev);
479 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
485 gdrv->shutdown(gdev);
527 struct ccwgroup_device *gdev = to_ccwgroupdev(dev);
529 ccwgroup_ungroup(gdev);
583 struct ccwgroup_device *gdev;
589 gdev = dev_get_drvdata(&cdev->dev);
590 if (!gdev) {
595 get_device(&gdev->dev);
598 ccwgroup_ungroup(gdev);
600 put_device(&gdev->dev);