46 static int spk_ttyio_ldisc_open(struct tty_struct *tty)  in spk_ttyio_ldisc_open()  argument
50 	if (tty != speakup_tty)  in spk_ttyio_ldisc_open()
54 	if (!tty->ops->write)  in spk_ttyio_ldisc_open()
63 	tty->disc_data = ldisc_data;  in spk_ttyio_ldisc_open()
68 static void spk_ttyio_ldisc_close(struct tty_struct *tty)  in spk_ttyio_ldisc_close()  argument
76 static int spk_ttyio_receive_buf2(struct tty_struct *tty,  in spk_ttyio_receive_buf2()  argument
79 	struct spk_ldisc_data *ldisc_data = tty->disc_data;  in spk_ttyio_receive_buf2()
136 static inline void get_termios(struct tty_struct *tty,  in get_termios()  argument
139 	down_read(&tty->termios_rwsem);  in get_termios()
140 	*out_termios = tty->termios;  in get_termios()
141 	up_read(&tty->termios_rwsem);  in get_termios()
147 	struct tty_struct *tty;  in spk_ttyio_initialise_ldisc()  local
155 	tty = tty_kopen(dev);  in spk_ttyio_initialise_ldisc()
156 	if (IS_ERR(tty))  in spk_ttyio_initialise_ldisc()
157 		return PTR_ERR(tty);  in spk_ttyio_initialise_ldisc()
159 	if (tty->ops->open)  in spk_ttyio_initialise_ldisc()
160 		ret = tty->ops->open(tty, NULL);  in spk_ttyio_initialise_ldisc()
165 		tty_unlock(tty);  in spk_ttyio_initialise_ldisc()
169 	clear_bit(TTY_HUPPED, &tty->flags);  in spk_ttyio_initialise_ldisc()
171 	get_termios(tty, &tmp_termios);  in spk_ttyio_initialise_ldisc()
174 		tty_set_termios(tty, &tmp_termios);  in spk_ttyio_initialise_ldisc()
180 		get_termios(tty, &tmp_termios);  in spk_ttyio_initialise_ldisc()
185 	tty_unlock(tty);  in spk_ttyio_initialise_ldisc()
188 	speakup_tty = tty;  in spk_ttyio_initialise_ldisc()
189 	ret = tty_set_ldisc(tty, N_SPEAKUP);  in spk_ttyio_initialise_ldisc()
200 	tty_lock(tty);  in spk_ttyio_initialise_ldisc()
201 	if (tty->ops->close)  in spk_ttyio_initialise_ldisc()
202 		tty->ops->close(tty, NULL);  in spk_ttyio_initialise_ldisc()
203 	tty_unlock(tty);  in spk_ttyio_initialise_ldisc()
205 	tty_kclose(tty);  in spk_ttyio_initialise_ldisc()
267 static int check_tty(struct tty_struct *tty)  in check_tty()  argument
269 	if (!tty) {  in check_tty()