From: Johan Hovold Date: Fri, 6 Jan 2017 18:15:10 +0000 (+0100) Subject: USB: serial: ch341: fix initial modem-control state X-Git-Tag: v4.10-rc4~5^2^2~8 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=4e2da44691cffbfffb1535f478d19bc2dca3e62b;p=linux.git USB: serial: ch341: fix initial modem-control state 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 Signed-off-by: Johan Hovold --- diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 2597b83a8ae2..d133e72fe888 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -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)