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Date: Sun, 10 Jan 2016 20:24:02 -0800 From: Peter Hurley <peter@...leysoftware.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org, Peter Hurley <peter@...leysoftware.com> Subject: [PATCH v2 8/8] 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 <peter@...leysoftware.com> --- 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 3031982..0baa231 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) -- 2.7.0
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