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: v3.2.87~107 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2acf17afd05e9e18af3de985ed2e24ba64e167e7;p=pandora-kernel.git USB: serial: ch341: fix initial modem-control state 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 Signed-off-by: Ben Hutchings --- diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c index 9538181629f3..5171fc383b03 100644 --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -270,7 +270,6 @@ static int ch341_attach(struct usb_serial *serial) spin_lock_init(&priv->lock); priv->baud_rate = DEFAULT_BAUD_RATE; - priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR; r = ch341_configure(serial->dev, priv); if (r < 0)