USB modem driver / the USB Bluetooth tty driver / struct tty_driver / driver / working tty driver / tty_register_driver / tty line discipline driver / AM tty driver / default serial driver / tiny_tty_driver / Small TTY Driver / tiny_tty driver / tty_unregister_driver / Major / serial driver / struct tty_driver / the function alloc_tty_driver / tiny tty driver / tty driver / AM When tty_register_driver / !tiny_tty_driver / /