173 	struct tty_struct *tty;  in tty_port_tty_get()  local
176 	tty = tty_kref_get(port->tty);  in tty_port_tty_get()
178 	return tty;  in tty_port_tty_get()
191 void tty_port_tty_set(struct tty_port *port, struct tty_struct *tty)  in tty_port_tty_set()  argument
196 	tty_kref_put(port->tty);  in tty_port_tty_set()
197 	port->tty = tty_kref_get(tty);  in tty_port_tty_set()
202 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
241 	tty = port->tty;  in tty_port_hangup()
242 	if (tty)  in tty_port_hangup()
243 		set_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_hangup()
244 	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 		wait_event_interruptible_tty(tty, port->close_wait,  in tty_port_block_til_ready()
378 	if (tty->flags & (1 << TTY_IO_ERROR)) {  in tty_port_block_til_ready()
384 		if (tty->termios.c_cflag & CBAUD)  in tty_port_block_til_ready()
390 	if (C_CLOCAL(tty))  in tty_port_block_til_ready()
407 		if (C_BAUD(tty) && test_bit(ASYNCB_INITIALIZED, &port->flags))  in tty_port_block_til_ready()
433 		tty_unlock(tty);  in tty_port_block_til_ready()
435 		tty_lock(tty);  in tty_port_block_til_ready()
452 static void tty_port_drain_delay(struct tty_port *port, struct tty_struct *tty)  in tty_port_drain_delay()  argument
454 	unsigned int bps = tty_get_baud_rate(tty);  in tty_port_drain_delay()
471 				struct tty_struct *tty, struct file *filp)  in tty_port_close_start()  argument
479 	if (tty->count == 1 && port->count != 1) {  in tty_port_close_start()
498 	tty->closing = 1;  in tty_port_close_start()
502 		if (tty->flow_stopped)  in tty_port_close_start()
503 			tty_driver_flush_buffer(tty);  in tty_port_close_start()
505 			tty_wait_until_sent_from_close(tty, port->closing_wait);  in tty_port_close_start()
507 			tty_port_drain_delay(port, tty);  in tty_port_close_start()
510 	tty_ldisc_flush(tty);  in tty_port_close_start()
518 void tty_port_close_end(struct tty_port *port, struct tty_struct *tty)  in tty_port_close_end()  argument
522 	tty_ldisc_flush(tty);  in tty_port_close_end()
523 	tty->closing = 0;  in tty_port_close_end()
551 void tty_port_close(struct tty_port *port, struct tty_struct *tty,  in tty_port_close()  argument
554 	if (tty_port_close_start(port, tty, filp) == 0)  in tty_port_close()
556 	tty_port_shutdown(port, tty);  in tty_port_close()
557 	set_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_close()
558 	tty_port_close_end(port, tty);  in tty_port_close()
574 		struct tty_struct *tty)  in tty_port_install()  argument
576 	tty->port = port;  in tty_port_install()
577 	return tty_standard_install(driver, tty);  in tty_port_install()
589 int tty_port_open(struct tty_port *port, struct tty_struct *tty,  in tty_port_open()  argument
595 	tty_port_tty_set(port, tty);  in tty_port_open()
606 		clear_bit(TTY_IO_ERROR, &tty->flags);  in tty_port_open()
608 			int retval = port->ops->activate(port, tty);  in tty_port_open()
617 	return tty_port_block_til_ready(port, tty, filp);  in tty_port_open()