172 	struct tty_struct *tty;  in tty_port_tty_get()  local
175 	tty = tty_kref_get(port->tty);  in tty_port_tty_get()
177 	return tty;  in tty_port_tty_get()
190 void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)  in tty_port_tty_set()  argument
195 	tty_kref_put(port->tty);  in tty_port_tty_set()
196 	port->tty = tty_kref_get(tty);  in tty_port_tty_set()
201 static void tty_port_shutdown(struct tty_port *port, struct tty_struct *tty)  in tty_port_shutdown()  argument
213 		if (tty && C_HUPCL(tty))  in tty_port_shutdown()
235 	struct tty_struct *tty;  in tty_port_hangup()  local
240 	tty = port->tty;  in tty_port_hangup()
241 	if (tty)  in tty_port_hangup()
242 		set_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_hangup()
243 	port->tty = NULL;  in tty_port_hangup()
246 	tty_port_shutdown(port, tty);  in tty_port_hangup()
247 	tty_kref_put(tty);  in tty_port_hangup()
261 	struct tty_struct *tty = tty_port_tty_get(port);  in tty_port_tty_hangup()  local
263 	if (tty && (!check_clocal || !C_CLOCAL(tty)))  in tty_port_tty_hangup()
264 		tty_hangup(tty);  in tty_port_tty_hangup()
265 	tty_kref_put(tty);  in tty_port_tty_hangup()
276 	struct tty_struct *tty = tty_port_tty_get(port);  in tty_port_tty_wakeup()  local
278 	if (tty) {  in tty_port_tty_wakeup()
279 		tty_wakeup(tty);  in tty_port_tty_wakeup()
280 		tty_kref_put(tty);  in tty_port_tty_wakeup()
360 				struct tty_struct *tty, struct file *filp)  in tty_port_block_til_ready()  argument
368 	if (tty_io_error(tty)) {  in tty_port_block_til_ready()
374 		if (C_BAUD(tty))  in tty_port_block_til_ready()
380 	if (C_CLOCAL(tty))  in tty_port_block_til_ready()
397 		if (C_BAUD(tty) && tty_port_initialized(port))  in tty_port_block_til_ready()
422 		tty_unlock(tty);  in tty_port_block_til_ready()
424 		tty_lock(tty);  in tty_port_block_til_ready()
441 static void tty_port_drain_delay(struct tty_port *port, struct tty_struct *tty)  in tty_port_drain_delay()  argument
443 	unsigned int bps = tty_get_baud_rate(tty);  in tty_port_drain_delay()
457 				struct tty_struct *tty, struct file *filp)  in tty_port_close_start()  argument
465 	if (tty->count == 1 && port->count != 1) {  in tty_port_close_start()
466 		tty_warn(tty, "%s: tty->count = 1 port count = %d\n", __func__,  in tty_port_close_start()
471 		tty_warn(tty, "%s: bad port count (%d)\n", __func__,  in tty_port_close_start()
482 	tty->closing = 1;  in tty_port_close_start()
486 		if (tty->flow_stopped)  in tty_port_close_start()
487 			tty_driver_flush_buffer(tty);  in tty_port_close_start()
489 			tty_wait_until_sent(tty, port->closing_wait);  in tty_port_close_start()
491 			tty_port_drain_delay(port, tty);  in tty_port_close_start()
494 	tty_ldisc_flush(tty);  in tty_port_close_start()
502 void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)  in tty_port_close_end()  argument
506 	tty_ldisc_flush(tty);  in tty_port_close_end()
507 	tty->closing = 0;  in tty_port_close_end()
528 void tty_port_close(struct tty_port *port, struct tty_struct *tty,  in tty_port_close()  argument
531 	if (tty_port_close_start(port, tty, filp) == 0)  in tty_port_close()
533 	tty_port_shutdown(port, tty);  in tty_port_close()
534 	set_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_close()
535 	tty_port_close_end(port, tty);  in tty_port_close()
551 		struct tty_struct *tty)  in tty_port_install()  argument
553 	tty->port = port;  in tty_port_install()
554 	return tty_standard_install(driver, tty);  in tty_port_install()
566 int tty_port_open(struct tty_port *port, struct tty_struct *tty,  in tty_port_open()  argument
572 	tty_port_tty_set(port, tty);  in tty_port_open()
583 		clear_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_open()
585 			int retval = port->ops->activate(port, tty);  in tty_port_open()
594 	return tty_port_block_til_ready(port, tty, filp);  in tty_port_open()