83 void tty_unregister_ldisc(struct tty_ldisc_ops *ldisc)  in tty_unregister_ldisc()  argument
88 	tty_ldiscs[ldisc->num] = NULL;  in tty_unregister_ldisc()
244 	ld = tty->ldisc;  in tty_ldisc_ref_wait()
264 		ld = tty->ldisc;  in tty_ldisc_ref()
475 	tty->ldisc = disc;  in tty_ldisc_failto()
533 	if (!tty->ldisc) {  in tty_set_ldisc()
539 	if (tty->ldisc->ops->num == disc)  in tty_set_ldisc()
548 	old_ldisc = tty->ldisc;  in tty_set_ldisc()
554 	tty->ldisc = new_ldisc;  in tty_set_ldisc()
564 	if (tty->ldisc->ops->num != old_ldisc->ops->num && tty->ops->set_ldisc) {  in tty_set_ldisc()
602 	if (!tty->ldisc)  in tty_ldisc_kill()
607 	tty_ldisc_close(tty, tty->ldisc);  in tty_ldisc_kill()
608 	tty_ldisc_put(tty->ldisc);  in tty_ldisc_kill()
610 	tty->ldisc = NULL;  in tty_ldisc_kill()
653 	if (tty->ldisc) {  in tty_ldisc_reinit()
654 		tty_ldisc_close(tty, tty->ldisc);  in tty_ldisc_reinit()
655 		tty_ldisc_put(tty->ldisc);  in tty_ldisc_reinit()
659 	tty->ldisc = ld;  in tty_ldisc_reinit()
661 	retval = tty_ldisc_open(tty, tty->ldisc);  in tty_ldisc_reinit()
663 		tty_ldisc_put(tty->ldisc);  in tty_ldisc_reinit()
664 		tty->ldisc = NULL;  in tty_ldisc_reinit()
688 	tty_ldisc_debug(tty, "%p: hangup\n", tty->ldisc);  in tty_ldisc_hangup()
717 	if (tty->ldisc) {  in tty_ldisc_hangup()
739 	int retval = tty_ldisc_open(tty, tty->ldisc);  in tty_ldisc_setup()
749 		retval = tty_ldisc_open(o_tty, o_tty->ldisc);  in tty_ldisc_setup()
751 			tty_ldisc_close(tty, tty->ldisc);  in tty_ldisc_setup()
801 	tty->ldisc = ld;  in tty_ldisc_init()
815 	if (tty->ldisc)  in tty_ldisc_deinit()
816 		tty_ldisc_put(tty->ldisc);  in tty_ldisc_deinit()
817 	tty->ldisc = NULL;  in tty_ldisc_deinit()