217 static int v253_open(struct tty_struct *tty)  in v253_open()  argument
222 	if (!tty->ops->write)  in v253_open()
226 	if (!tty->disc_data)  in v253_open()
229 	if (tty->ops->write(tty, v253_init, len) != len) {  in v253_open()
236 	tty->disc_data = NULL;  in v253_open()
241 static void v253_close(struct tty_struct *tty)  in v253_close()  argument
243 	struct snd_soc_codec *codec = tty->disc_data;  in v253_close()
246 	tty->disc_data = NULL;  in v253_close()
260 static int v253_hangup(struct tty_struct *tty)  in v253_hangup()  argument
262 	v253_close(tty);  in v253_hangup()
267 static void v253_receive(struct tty_struct *tty,  in v253_receive()  argument
270 	struct snd_soc_codec *codec = tty->disc_data;  in v253_receive()
282 		cx20442->control_data = tty;  in v253_receive()
283 		codec->hw_write = (hw_write_t)tty->ops->write;  in v253_receive()
289 static void v253_wakeup(struct tty_struct *tty)  in v253_wakeup()  argument
384 		struct tty_struct *tty = cx20442->control_data;  in cx20442_codec_remove()  local
385 		tty_hangup(tty);  in cx20442_codec_remove()