USB: serial: ch341: fix initial modem-control state
authorJohan Hovold <johan@kernel.org>
Fri, 6 Jan 2017 18:15:10 +0000 (19:15 +0100)
committerJohan Hovold <johan@kernel.org>
Mon, 9 Jan 2017 13:55:37 +0000 (14:55 +0100)
DTR and RTS will be asserted by the tty-layer when the port is opened
and deasserted on close (if HUPCL is set). Make sure the initial state
is not-asserted before the port is first opened as well.

Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
drivers/usb/serial/ch341.c

index 2597b83a8ae254d0eff28b2d2d124ff51c196248..d133e72fe8883f1b76e20dd7d1d4ada85ec81d74 100644 (file)
@@ -258,7 +258,6 @@ static int ch341_port_probe(struct usb_serial_port *port)
 
        spin_lock_init(&priv->lock);
        priv->baud_rate = DEFAULT_BAUD_RATE;
-       priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
 
        r = ch341_configure(port->serial->dev, priv);
        if (r < 0)