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Groups > linux.kernel > #1305822
| From | Peter Hurley <peter@hurleysoftware.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 8/8] serial: core: Perform RTS signalling before soft flow ctrl |
| Date | 2016-01-11 05:30 +0100 |
| Message-ID | <qPChe-5Gm-49@gated-at.bofh.it> (permalink) |
| References | <qPChc-5Gm-13@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
When throttling, time is of the essence; try RTS signalling before soft flow control, which will take longer. Signed-off-by: Peter Hurley <peter@hurleysoftware.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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[PATCH v2 0/8] Misc serial cleanups Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100 [PATCH v2 5/8] serial: core: Cleanup uart_open() exit Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100 [PATCH v2 2/8] serial: core: Fold do_uart_get_info() into caller Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100 [PATCH v2 1/8] serial: core: Fold __uart_put_char() into caller Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100 [PATCH v2 8/8] serial: core: Perform RTS signalling before soft flow ctrl Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100 [PATCH v2 7/8] serial: core: Unfold < 80 char lines Peter Hurley <peter@hurleysoftware.com> - 2016-01-11 05:30 +0100
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