75 struct mtty_dev {  struct
81 } mtty_dev;  argument
1441 	memset(&mtty_dev, 0, sizeof(mtty_dev));  in mtty_dev_init()
1443 	idr_init(&mtty_dev.vd_idr);  in mtty_dev_init()
1445 	ret = alloc_chrdev_region(&mtty_dev.vd_devt, 0, MINORMASK, MTTY_NAME);  in mtty_dev_init()
1452 	cdev_init(&mtty_dev.vd_cdev, &vd_fops);  in mtty_dev_init()
1453 	cdev_add(&mtty_dev.vd_cdev, mtty_dev.vd_devt, MINORMASK);  in mtty_dev_init()
1455 	pr_info("major_number:%d\n", MAJOR(mtty_dev.vd_devt));  in mtty_dev_init()
1457 	mtty_dev.vd_class = class_create(THIS_MODULE, MTTY_CLASS_NAME);  in mtty_dev_init()
1459 	if (IS_ERR(mtty_dev.vd_class)) {  in mtty_dev_init()
1461 		ret = PTR_ERR(mtty_dev.vd_class);  in mtty_dev_init()
1465 	mtty_dev.dev.class = mtty_dev.vd_class;  in mtty_dev_init()
1466 	mtty_dev.dev.release = mtty_device_release;  in mtty_dev_init()
1467 	dev_set_name(&mtty_dev.dev, "%s", MTTY_NAME);  in mtty_dev_init()
1469 	ret = device_register(&mtty_dev.dev);  in mtty_dev_init()
1473 	ret = mdev_register_device(&mtty_dev.dev, &mdev_fops);  in mtty_dev_init()
1484 	device_unregister(&mtty_dev.dev);  in mtty_dev_init()
1486 	class_destroy(mtty_dev.vd_class);  in mtty_dev_init()
1489 	cdev_del(&mtty_dev.vd_cdev);  in mtty_dev_init()
1490 	unregister_chrdev_region(mtty_dev.vd_devt, MINORMASK);  in mtty_dev_init()
1498 	mtty_dev.dev.bus = NULL;  in mtty_dev_exit()
1499 	mdev_unregister_device(&mtty_dev.dev);  in mtty_dev_exit()
1501 	device_unregister(&mtty_dev.dev);  in mtty_dev_exit()
1502 	idr_destroy(&mtty_dev.vd_idr);  in mtty_dev_exit()
1503 	cdev_del(&mtty_dev.vd_cdev);  in mtty_dev_exit()
1504 	unregister_chrdev_region(mtty_dev.vd_devt, MINORMASK);  in mtty_dev_exit()
1505 	class_destroy(mtty_dev.vd_class);  in mtty_dev_exit()
1506 	mtty_dev.vd_class = NULL;  in mtty_dev_exit()