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()
91 int tty_unregister_ldisc(int disc)  in tty_unregister_ldisc()  argument
96 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_unregister_ldisc()
100 	if (tty_ldiscs[disc]->refcount)  in tty_unregister_ldisc()
103 		tty_ldiscs[disc] = NULL;  in tty_unregister_ldisc()
110 static struct tty_ldisc_ops *get_ldops(int disc)  in get_ldops()  argument
117 	ldops = tty_ldiscs[disc];  in get_ldops()
166 static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)  in tty_ldisc_get()  argument
171 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_ldisc_get()
178 	ldops = get_ldops(disc);  in tty_ldisc_get()
182 		request_module("tty-ldisc-%d", disc);  in tty_ldisc_get()
183 		ldops = get_ldops(disc);  in tty_ldisc_get()
442 static void tty_set_termios_ldisc(struct tty_struct *tty, int disc)  in tty_set_termios_ldisc()  argument
445 	tty->termios.c_line = disc;  in tty_set_termios_ldisc()
509 	struct tty_ldisc *disc = tty_ldisc_get(tty, ld);  in tty_ldisc_failto()  local
513 	if (IS_ERR(disc))  in tty_ldisc_failto()
514 		return PTR_ERR(disc);  in tty_ldisc_failto()
515 	tty->ldisc = disc;  in tty_ldisc_failto()
517 	if ((r = tty_ldisc_open(tty, disc)) < 0)  in tty_ldisc_failto()
518 		tty_ldisc_put(disc);  in tty_ldisc_failto()
558 int tty_set_ldisc(struct tty_struct *tty, int disc)  in tty_set_ldisc()  argument
563 	new_ldisc = tty_ldisc_get(tty, disc);  in tty_set_ldisc()
578 	if (tty->ldisc->ops->num == disc)  in tty_set_ldisc()
594 	tty_set_termios_ldisc(tty, disc);  in tty_set_ldisc()
679 int tty_ldisc_reinit(struct tty_struct *tty, int disc)  in tty_ldisc_reinit()  argument
685 	ld = tty_ldisc_get(tty, disc);  in tty_ldisc_reinit()
687 		BUG_ON(disc == N_TTY);  in tty_ldisc_reinit()
698 	tty_set_termios_ldisc(tty, disc);  in tty_ldisc_reinit()