63 int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)  in tty_register_ldisc()  argument
68 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_register_ldisc()
72 	tty_ldiscs[disc] = new_ldisc;  in tty_register_ldisc()
73 	new_ldisc->num = disc;  in tty_register_ldisc()
93 int tty_unregister_ldisc(int disc)  in tty_unregister_ldisc()  argument
98 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_unregister_ldisc()
102 	if (tty_ldiscs[disc]->refcount)  in tty_unregister_ldisc()
105 		tty_ldiscs[disc] = NULL;  in tty_unregister_ldisc()
112 static struct tty_ldisc_ops *get_ldops(int disc)  in get_ldops()  argument
119 	ldops = tty_ldiscs[disc];  in get_ldops()
154 static struct tty_ldisc *tty_ldisc_get(struct tty_struct *tty, int disc)  in tty_ldisc_get()  argument
159 	if (disc < N_TTY || disc >= NR_LDISCS)  in tty_ldisc_get()
166 	ldops = get_ldops(disc);  in tty_ldisc_get()
168 		request_module("tty-ldisc-%d", disc);  in tty_ldisc_get()
169 		ldops = get_ldops(disc);  in tty_ldisc_get()