60 int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)  in tty_register_ldisc()  argument
65 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_register_ldisc()
69 	tty_ldiscs[disc] = new_ldisc;  in tty_register_ldisc()
70 	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()
151 static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)  in tty_ldisc_get()  argument
156 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_ldisc_get()
163 	ldops = get_ldops(disc);  in tty_ldisc_get()
165 		request_module("tty-ldisc-%d", disc);  in tty_ldisc_get()
166 		ldops = get_ldops(disc);  in tty_ldisc_get()