56 static int rs_open(struct tty_struct *tty, struct file * filp)  in rs_open()  argument
58 	tty->port = &serial_port;  in rs_open()
60 	if (tty->count == 1) {  in rs_open()
81 static void rs_close(struct tty_struct *tty, struct file * filp)  in rs_close()  argument
84 	if (tty->count == 1)  in rs_close()
90 static int rs_write(struct tty_struct * tty,  in rs_write()  argument
124 static int rs_put_char(struct tty_struct *tty, unsigned char ch)  in rs_put_char()  argument
126 	return rs_write(tty, &ch, 1);  in rs_put_char()
129 static void rs_flush_chars(struct tty_struct *tty)  in rs_flush_chars()  argument
133 static int rs_write_room(struct tty_struct *tty)  in rs_write_room()  argument
139 static int rs_chars_in_buffer(struct tty_struct *tty)  in rs_chars_in_buffer()  argument
145 static void rs_hangup(struct tty_struct *tty)  in rs_hangup()  argument
150 static void rs_wait_until_sent(struct tty_struct *tty, int timeout)  in rs_wait_until_sent()  argument