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Commit b4749b97 authored by Peter Hurley's avatar Peter Hurley Committed by Greg Kroah-Hartman
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serial: core: Perform RTS signalling before soft flow ctrl 



When throttling, time is of the essence; try RTS signalling before
soft flow control, which will take longer.

Signed-off-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 968af298

drivers/tty/serial/serial_core.c

+6 −6
Original line number Diff line number Diff line
@@ -641,11 +641,11 @@ static void uart_throttle(struct tty_struct *tty) 
		mask &= ~port->status;

	}



	if (mask & UPSTAT_AUTOXOFF)

		uart_send_xchar(tty, STOP_CHAR(tty));



	if (mask & UPSTAT_AUTORTS)

		uart_clear_mctrl(port, TIOCM_RTS);



	if (mask & UPSTAT_AUTOXOFF)

		uart_send_xchar(tty, STOP_CHAR(tty));

}



static void uart_unthrottle(struct tty_struct *tty)
@@ -664,11 +664,11 @@ static void uart_unthrottle(struct tty_struct *tty) 
		mask &= ~port->status;

	}



	if (mask & UPSTAT_AUTOXOFF)

		uart_send_xchar(tty, START_CHAR(tty));



	if (mask & UPSTAT_AUTORTS)

		uart_set_mctrl(port, TIOCM_RTS);



	if (mask & UPSTAT_AUTOXOFF)

		uart_send_xchar(tty, START_CHAR(tty));

}



static void uart_get_info(struct tty_port *port, struct serial_struct *retinfo)