141 static void change_speed(struct m68k_serial *info, struct tty_struct *tty);
212 static void rs_stop(struct tty_struct *tty)  in rs_stop()  argument
214 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_stop()
218 	if (serial_paranoia_check(info, tty->name, "rs_stop"))  in rs_stop()
244 static void rs_start(struct tty_struct *tty)  in rs_start()  argument
246 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_start()
250 	if (serial_paranoia_check(info, tty->name, "rs_start"))  in rs_start()
311 static void transmit_chars(struct m68k_serial *info, struct tty_struct *tty)  in transmit_chars()  argument
322 	if ((info->xmit_cnt <= 0) || !tty || tty->stopped) {  in transmit_chars()
350 	struct tty_struct *tty = tty_port_tty_get(&info->tport);  in rs_interrupt()  local
364 		transmit_chars(info, tty);  in rs_interrupt()
368 	tty_kref_put(tty);  in rs_interrupt()
373 static int startup(struct m68k_serial *info, struct tty_struct *tty)  in startup()  argument
408 	if (tty)  in startup()
409 		clear_bit(TTY_IO_ERROR, &tty->flags);  in startup()
416 	change_speed(info, tty);  in startup()
427 static void shutdown(struct m68k_serial *info, struct tty_struct *tty)  in shutdown()  argument
443 	if (tty)  in shutdown()
444 		set_bit(TTY_IO_ERROR, &tty->flags);  in shutdown()
502 static void change_speed(struct m68k_serial *info, struct tty_struct *tty)  in change_speed()  argument
510 	cflag = tty->termios.c_cflag;  in change_speed()
605 static void rs_set_ldisc(struct tty_struct *tty)  in rs_set_ldisc()  argument
607 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_set_ldisc()
609 	if (serial_paranoia_check(info, tty->name, "rs_set_ldisc"))  in rs_set_ldisc()
612 	info->is_cons = (tty->termios.c_line == N_TTY);  in rs_set_ldisc()
617 static void rs_flush_chars(struct tty_struct *tty)  argument
619 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
623 	if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
632 	if (info->xmit_cnt <= 0 || tty->stopped || !info->xmit_buf) {
663 static int rs_write(struct tty_struct * tty,  argument
667 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
671 	if (serial_paranoia_check(info, tty->name, "rs_write"))
674 	if (!tty || !info->xmit_buf)
698 	if (info->xmit_cnt && !tty->stopped) {
726 static int rs_write_room(struct tty_struct *tty)  argument
728 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
731 	if (serial_paranoia_check(info, tty->name, "rs_write_room"))
739 static int rs_chars_in_buffer(struct tty_struct *tty)  argument
741 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
743 	if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
748 static void rs_flush_buffer(struct tty_struct *tty)  argument
750 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
753 	if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
758 	tty_wakeup(tty);
769 static void rs_throttle(struct tty_struct * tty)  argument
771 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
773 	if (serial_paranoia_check(info, tty->name, "rs_throttle"))
776 	if (I_IXOFF(tty))
777 		info->x_char = STOP_CHAR(tty);
782 static void rs_unthrottle(struct tty_struct * tty)  argument
784 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
786 	if (serial_paranoia_check(info, tty->name, "rs_unthrottle"))
789 	if (I_IXOFF(tty)) {
793 			info->x_char = START_CHAR(tty);
828 static int set_serial_info(struct m68k_serial *info, struct tty_struct *tty,  argument
871 	retval = startup(info, tty);
921 static int rs_ioctl(struct tty_struct *tty,  argument
924 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
927 	if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
933 		if (tty->flags & (1 << TTY_IO_ERROR))
939 			retval = tty_check_change(tty);
942 			tty_wait_until_sent(tty, 0);
947 			retval = tty_check_change(tty);
950 			tty_wait_until_sent(tty, 0);
957 			return set_serial_info(info, tty,
972 static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  argument
974 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
976 	change_speed(info, tty);
979 	    !(tty->termios.c_cflag & CRTSCTS))
980 		rs_start(tty);
994 static void rs_close(struct tty_struct *tty, struct file * filp)  argument
996 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
1001 	if (serial_paranoia_check(info, tty->name, "rs_close"))
1011 	if ((tty->count == 1) && (port->count != 1)) {
1037 	tty->closing = 1;
1039 		tty_wait_until_sent(tty, port->closing_wait);
1050 	shutdown(info, tty);
1051 	rs_flush_buffer(tty);
1053 	tty_ldisc_flush(tty);
1054 	tty->closing = 0;
1058 	if (tty->ldisc.num != ldiscs[N_TTY].num) {
1059 		if (tty->ldisc.close)
1060 			(tty->ldisc.close)(tty);
1061 		tty->ldisc = ldiscs[N_TTY];
1062 		tty->termios.c_line = N_TTY;
1063 		if (tty->ldisc.open)
1064 			(tty->ldisc.open)(tty);
1080 void rs_hangup(struct tty_struct *tty)  argument
1082 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
1084 	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
1087 	rs_flush_buffer(tty);
1088 	shutdown(info, tty);
1101 int rs_open(struct tty_struct *tty, struct file * filp)  argument
1106 	info = &m68k_soft[tty->index];
1108 	if (serial_paranoia_check(info, tty->name, "rs_open"))
1112 	tty->driver_data = info;
1113 	tty_port_tty_set(&info->tport, tty);
1118 	retval = startup(info, tty);
1122 	return tty_port_block_til_ready(&info->tport, tty, filp);