61 int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)  in tty_register_ldisc()  argument
66 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_register_ldisc()
70 	tty_ldiscs[disc] = new_ldisc;  in tty_register_ldisc()
71 	new_ldisc->num = disc;  in tty_register_ldisc()
90 int tty_unregister_ldisc(int disc)  in tty_unregister_ldisc()  argument
95 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_unregister_ldisc()
99 	if (tty_ldiscs[disc]->refcount)  in tty_unregister_ldisc()
102 		tty_ldiscs[disc] = NULL;  in tty_unregister_ldisc()
109 static struct tty_ldisc_ops *get_ldops(int disc)  in get_ldops()  argument
116 	ldops = tty_ldiscs[disc];  in get_ldops()
160 static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)  in tty_ldisc_get()  argument
165 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_ldisc_get()
172 	ldops = get_ldops(disc);  in tty_ldisc_get()
176 		request_module("tty-ldisc-%d", disc);  in tty_ldisc_get()
177 		ldops = get_ldops(disc);  in tty_ldisc_get()
436 static void tty_set_termios_ldisc(struct tty_struct *tty, int disc)  in tty_set_termios_ldisc()  argument
439 	tty->termios.c_line = disc;  in tty_set_termios_ldisc()
503 	struct tty_ldisc *disc = tty_ldisc_get(tty, ld);  in tty_ldisc_failto()  local
507 	if (IS_ERR(disc))  in tty_ldisc_failto()
508 		return PTR_ERR(disc);  in tty_ldisc_failto()
509 	tty->ldisc = disc;  in tty_ldisc_failto()
511 	if ((r = tty_ldisc_open(tty, disc)) < 0)  in tty_ldisc_failto()
512 		tty_ldisc_put(disc);  in tty_ldisc_failto()
552 int tty_set_ldisc(struct tty_struct *tty, int disc)  in tty_set_ldisc()  argument
557 	new_ldisc = tty_ldisc_get(tty, disc);  in tty_set_ldisc()
572 	if (tty->ldisc->ops->num == disc)  in tty_set_ldisc()
588 	tty_set_termios_ldisc(tty, disc);  in tty_set_ldisc()
673 int tty_ldisc_reinit(struct tty_struct *tty, int disc)  in tty_ldisc_reinit()  argument
679 	ld = tty_ldisc_get(tty, disc);  in tty_ldisc_reinit()
681 		BUG_ON(disc == N_TTY);  in tty_ldisc_reinit()
692 	tty_set_termios_ldisc(tty, disc);  in tty_ldisc_reinit()