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Message-Id: <1401891371-4946-1-git-send-email-peter@hurleysoftware.com> Date: Wed, 4 Jun 2014 10:16:10 -0400 From: Peter Hurley <peter@...leysoftware.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Cc: linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org, Valerio Vanni <valerio.vanni@...ind.it>, Peter Hurley <peter@...leysoftware.com> Subject: [PATCH 1/2] serial: core: Don't drop DTR if system console If a tty is opened on a serial console, don't drop DTR on last tty close, on tty hangup, or when resetting port hardware via TIOCSSERIAL and TIOCSERCONFIG ioctls. Signed-off-by: Peter Hurley <peter@...leysoftware.com> --- drivers/tty/serial/serial_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index b68550d..498b149 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -239,7 +239,8 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state) /* * Turn off DTR and RTS early. */ - if (!tty || (tty->termios.c_cflag & HUPCL)) + if (!uart_console(uport) && + (!tty || (tty->termios.c_cflag & HUPCL))) uart_clear_mctrl(uport, TIOCM_DTR | TIOCM_RTS); uart_port_shutdown(port); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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