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

PATCH [email protected] 1 participant 1 message Jan 17, 2017

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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 <[email protected]> know about it.

Quoted 1 line

From 4e2da44691cffbfffb1535f478d19bc2dca3e62b Mon Sep 17 00:00:00 2001

From: Johan Hovold <[email protected]>
Date: Fri, 6 Jan 2017 19:15:10 +0100
Subject: USB: serial: ch341: fix initial modem-control state

From: Johan Hovold <[email protected]>

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")
---
 drivers/usb/serial/ch341.c |    1 -
 1 file changed, 1 deletion(-)
drivers/usb/serial/ch341.c +0 -1
@@ -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 [email protected] 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