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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Peter Hurley 2016-01-10 20:24:02 -08:00 • committed by Greg Kroah-Hartman
commit b4749b97ae

View file

@ -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)