265 	WARN_ON(!tty->ldisc);  in tty_ldisc_ref_wait()
266 	return tty->ldisc;  in tty_ldisc_ref_wait()
284 		ld = tty->ldisc;  in tty_ldisc_ref()
451 		tty_ldisc_debug(tty, "%p: opened\n", tty->ldisc);  in tty_ldisc_open()
472 	tty_ldisc_debug(tty, "%p: closed\n", tty->ldisc);  in tty_ldisc_close()
492 	tty->ldisc = old;  in tty_ldisc_restore()
500 		tty->ldisc = new_ldisc;  in tty_ldisc_restore()
521 int tty_set_ldisc(struct tty_struct *tty, int ldisc)  in tty_set_ldisc()  argument
526 	new_ldisc = tty_ldisc_get(tty, ldisc);  in tty_set_ldisc()
542 	if (tty->ldisc->ops->num == ldisc) {  in tty_set_ldisc()
549 	old_ldisc = tty->ldisc;  in tty_set_ldisc()
564 	tty->ldisc = new_ldisc;  in tty_set_ldisc()
565 	tty_set_termios_ldisc(tty, ldisc);  in tty_set_ldisc()
574 	if (tty->ldisc->ops->num != old_ldisc->ops->num && tty->ops->set_ldisc) {  in tty_set_ldisc()
627 static int tty_ldisc_reinit(struct tty_struct *tty, int ldisc)  in tty_ldisc_reinit()  argument
629 	struct tty_ldisc *ld = tty_ldisc_get(tty, ldisc);  in tty_ldisc_reinit()
634 	tty_ldisc_close(tty, tty->ldisc);  in tty_ldisc_reinit()
635 	tty_ldisc_put(tty->ldisc);  in tty_ldisc_reinit()
639 	tty->ldisc = ld;  in tty_ldisc_reinit()
640 	tty_set_termios_ldisc(tty, ldisc);  in tty_ldisc_reinit()
666 	tty_ldisc_debug(tty, "%p: closing\n", tty->ldisc);  in tty_ldisc_hangup()
692 	if (tty->ldisc) {  in tty_ldisc_hangup()
701 				err = tty_ldisc_open(tty, tty->ldisc);  in tty_ldisc_hangup()
709 			WARN_ON(tty_ldisc_open(tty, tty->ldisc));  in tty_ldisc_hangup()
716 	tty_ldisc_debug(tty, "%p: re-opened\n", tty->ldisc);  in tty_ldisc_hangup()
731 	struct tty_ldisc *ld = tty->ldisc;  in tty_ldisc_setup()
739 		retval = tty_ldisc_open(o_tty, o_tty->ldisc);  in tty_ldisc_setup()
753 	tty_ldisc_close(tty, tty->ldisc);  in tty_ldisc_kill()
754 	tty_ldisc_put(tty->ldisc);  in tty_ldisc_kill()
756 	tty->ldisc = NULL;  in tty_ldisc_kill()
805 	tty->ldisc = ld;  in tty_ldisc_init()
817 	tty_ldisc_put(tty->ldisc);  in tty_ldisc_deinit()
818 	tty->ldisc = NULL;  in tty_ldisc_deinit()