From b4749b97ae41f02775967bd109a15b2e223f86be Mon Sep 17 00:00:00 2001 From: Peter Hurley Date: Sun, 10 Jan 2016 20:24:02 -0800 Subject: [PATCH] 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: Peter Hurley Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/serial_core.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index fa7f442424cf..be9359fdf5c7 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -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) -- 2.20.1