58 int tty_register_ldisc(struct tty_ldisc_ops *new_ldisc)  in tty_register_ldisc()  argument
62 	if (new_ldisc->num < N_TTY || new_ldisc->num >= NR_LDISCS)  in tty_register_ldisc()
66 	tty_ldiscs[new_ldisc->num] = new_ldisc;  in tty_register_ldisc()
522 	struct tty_ldisc *old_ldisc, *new_ldisc;  in tty_set_ldisc()  local
524 	new_ldisc = tty_ldisc_get(tty, disc);  in tty_set_ldisc()
525 	if (IS_ERR(new_ldisc))  in tty_set_ldisc()
526 		return PTR_ERR(new_ldisc);  in tty_set_ldisc()
554 	tty->ldisc = new_ldisc;  in tty_set_ldisc()
557 	retval = tty_ldisc_open(tty, new_ldisc);  in tty_set_ldisc()
560 		tty_ldisc_put(new_ldisc);  in tty_set_ldisc()
577 	new_ldisc = old_ldisc;  in tty_set_ldisc()
587 	tty_ldisc_put(new_ldisc);	/* drop the extra reference */  in tty_set_ldisc()