293 static void hvc_unthrottle(struct tty_struct *tty)  in hvc_unthrottle()  argument
302 static int hvc_open(struct tty_struct *tty, struct file * filp)  in hvc_open()  argument
309 	if (!(hp = hvc_get_by_index(tty->index)))  in hvc_open()
320 	tty->driver_data = hp;  in hvc_open()
322 	hp->tty = tty;  in hvc_open()
337 		hp->tty = NULL;  in hvc_open()
339 		tty->driver_data = NULL;  in hvc_open()
349 static void hvc_close(struct tty_struct *tty, struct file * filp)  in hvc_close()  argument
362 	if (!tty->driver_data)  in hvc_close()
365 	hp = tty->driver_data;  in hvc_close()
370 		hp->tty = NULL;  in hvc_close()
384 		tty_wait_until_sent(tty, HVC_CLOSE_WAIT);  in hvc_close()
395 static void hvc_hangup(struct tty_struct *tty)  in hvc_hangup()  argument
397 	struct hvc_struct *hp = tty->driver_data;  in hvc_hangup()
422 	hp->tty = NULL;  in hvc_hangup()
462 static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count)  in hvc_write()  argument
464 	struct hvc_struct *hp = tty->driver_data;  in hvc_write()
515 	struct tty_struct *tty;  in hvc_set_winsz()  local
523 	if (!hp->tty) {  in hvc_set_winsz()
528 	tty = tty_kref_get(hp->tty);  in hvc_set_winsz()
531 	tty_do_resize(tty, &ws);  in hvc_set_winsz()
532 	tty_kref_put(tty);  in hvc_set_winsz()
540 static int hvc_write_room(struct tty_struct *tty)  in hvc_write_room()  argument
542 	struct hvc_struct *hp = tty->driver_data;  in hvc_write_room()
550 static int hvc_chars_in_buffer(struct tty_struct *tty)  in hvc_chars_in_buffer()  argument
552 	struct hvc_struct *hp = tty->driver_data;  in hvc_chars_in_buffer()
576 	struct tty_struct *tty;  in hvc_poll()  local
597 	tty = hp->tty;  in hvc_poll()
598 	if (tty == NULL)  in hvc_poll()
602 	if (test_bit(TTY_THROTTLED, &tty->flags))  in hvc_poll()
613 		int count = tty_buffer_request_room(tty, N_INBUF);  in hvc_poll()
626 				tty_hangup(tty);  in hvc_poll()
650 					handle_sysrq(buf[i], tty);  in hvc_poll()
656 			tty_insert_flip_char(tty, buf[i], 0);  in hvc_poll()
665 		tty_wakeup(tty);  in hvc_poll()
675 		tty_flip_buffer_push(tty);  in hvc_poll()
808 	struct tty_struct *tty;  in hvc_remove()  local
811 	tty = hp->tty;  in hvc_remove()
833 	if (tty)  in hvc_remove()
834 		tty_hangup(tty);  in hvc_remove()