Commit 022104d5 authored by Johan Hovold's avatar Johan Hovold Committed by Sasha Levin

USB: serial: ch341: fix initial modem-control state

[ Upstream commit 4e2da446 ]

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: 664d5df9 ("USB: usb-serial ch341: support for DTR/RTS/CTS")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 49d412ae
...@@ -253,7 +253,6 @@ static int ch341_port_probe(struct usb_serial_port *port) ...@@ -253,7 +253,6 @@ static int ch341_port_probe(struct usb_serial_port *port)
spin_lock_init(&priv->lock); spin_lock_init(&priv->lock);
priv->baud_rate = DEFAULT_BAUD_RATE; priv->baud_rate = DEFAULT_BAUD_RATE;
priv->line_control = CH341_BIT_RTS | CH341_BIT_DTR;
r = ch341_configure(port->serial->dev, priv); r = ch341_configure(port->serial->dev, priv);
if (r < 0) if (r < 0)
......
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