1774 	m->tty_modem = alloc_tty_driver(ISDN_MAX_CHANNELS);  in isdn_tty_modem_init()
1775 	if (!m->tty_modem)  in isdn_tty_modem_init()
1777 	m->tty_modem->name = "ttyI";  in isdn_tty_modem_init()
1778 	m->tty_modem->major = ISDN_TTY_MAJOR;  in isdn_tty_modem_init()
1779 	m->tty_modem->minor_start = 0;  in isdn_tty_modem_init()
1780 	m->tty_modem->type = TTY_DRIVER_TYPE_SERIAL;  in isdn_tty_modem_init()
1781 	m->tty_modem->subtype = SERIAL_TYPE_NORMAL;  in isdn_tty_modem_init()
1782 	m->tty_modem->init_termios = tty_std_termios;  in isdn_tty_modem_init()
1783 	m->tty_modem->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;  in isdn_tty_modem_init()
1784 	m->tty_modem->flags = TTY_DRIVER_REAL_RAW;  in isdn_tty_modem_init()
1785 	m->tty_modem->driver_name = "isdn_tty";  in isdn_tty_modem_init()
1786 	tty_set_operations(m->tty_modem, &modem_ops);  in isdn_tty_modem_init()
1787 	retval = tty_register_driver(m->tty_modem);  in isdn_tty_modem_init()
1845 	tty_unregister_driver(m->tty_modem);  in isdn_tty_modem_init()
1847 	put_tty_driver(m->tty_modem);  in isdn_tty_modem_init()
1848 	m->tty_modem = NULL;  in isdn_tty_modem_init()
1868 	tty_unregister_driver(dev->mdm.tty_modem);  in isdn_tty_exit()
1869 	put_tty_driver(dev->mdm.tty_modem);  in isdn_tty_exit()
1870 	dev->mdm.tty_modem = NULL;  in isdn_tty_exit()