Patch "USB: serial: ch341: fix initial modem-control state" has been added to the 4.9-stable tree

Patch "USB: serial: ch341: fix initial modem-control state" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     usb-serial-ch341-fix-initial-modem-control-state.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>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)


Patches currently in stable-queue which might be from johan@kernel.org are

queue-4.9/usb-serial-ch341-fix-control-message-error-handling.patch
queue-4.9/usb-serial-ch341-fix-open-and-resume-after-b0.patch
queue-4.9/usb-serial-ch341-fix-open-error-handling.patch
queue-4.9/usb-serial-ch341-fix-initial-modem-control-state.patch
queue-4.9/usb-serial-kl5kusb105-fix-line-state-error-handling.patch
queue-4.9/usb-serial-ch341-fix-resume-after-reset.patch