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    Subject[PATCH 3.10 082/250] USB: serial: ch341: fix initial modem-control state
    Date
    From: Johan Hovold <johan@kernel.org>

    commit 4e2da44691cffbfffb1535f478d19bc2dca3e62b upstream.

    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")
    Signed-off-by: Johan Hovold <johan@kernel.org>
    Signed-off-by: Willy Tarreau <w@1wt.eu>
    ---
    drivers/usb/serial/ch341.c | 1 -
    1 file changed, 1 deletion(-)

    diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
    index c2a4171..2272f4f 100644
    --- a/drivers/usb/serial/ch341.c
    +++ b/drivers/usb/serial/ch341.c
    @@ -252,7 +252,6 @@ 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)
    --
    2.8.0.rc2.1.gbe9624a
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