| From 4e2da44691cffbfffb1535f478d19bc2dca3e62b Mon Sep 17 00:00:00 2001 |
| From: Johan Hovold <johan@kernel.org> |
| Date: Fri, 6 Jan 2017 19:15:10 +0100 |
| Subject: USB: serial: ch341: fix initial modem-control state |
| |
| 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/usb/serial/ch341.c | 1 - |
| 1 file changed, 1 deletion(-) |
| |
| --- a/drivers/usb/serial/ch341.c |
| +++ b/drivers/usb/serial/ch341.c |
| @@ -253,7 +253,6 @@ static int ch341_port_probe(struct usb_s |
| |
| 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) |
