From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:57406 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750787AbdAQNOi (ORCPT ); Tue, 17 Jan 2017 08:14:38 -0500 Subject: Patch "USB: serial: ch341: fix open and resume after B0" has been added to the 4.4-stable tree To: johan@kernel.org, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 17 Jan 2017 14:04:40 +0100 Message-ID: <148465828034181@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled USB: serial: ch341: fix open and resume after B0 to the 4.4-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-open-and-resume-after-b0.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From a20047f36e2f6a1eea4f1fd261aaa55882369868 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 6 Jan 2017 19:15:11 +0100 Subject: USB: serial: ch341: fix open and resume after B0 From: Johan Hovold commit a20047f36e2f6a1eea4f1fd261aaa55882369868 upstream. The private baud_rate variable is used to configure the port at open and reset-resume and must never be set to (and left at) zero or reset-resume and all further open attempts will fail. Fixes: aa91def41a7b ("USB: ch341: set tty baud speed according to tty struct") Fixes: 664d5df92e88 ("USB: usb-serial ch341: support for DTR/RTS/CTS") Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/ch341.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -361,12 +361,11 @@ static void ch341_set_termios(struct tty baud_rate = tty_get_baud_rate(tty); - priv->baud_rate = baud_rate; - if (baud_rate) { spin_lock_irqsave(&priv->lock, flags); priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS); spin_unlock_irqrestore(&priv->lock, flags); + priv->baud_rate = baud_rate; ch341_set_baudrate(port->serial->dev, priv); } else { spin_lock_irqsave(&priv->lock, flags); Patches currently in stable-queue which might be from johan@kernel.org are queue-4.4/usb-serial-ch341-fix-control-message-error-handling.patch queue-4.4/usb-serial-ch341-fix-open-and-resume-after-b0.patch queue-4.4/usb-serial-ch341-fix-open-error-handling.patch queue-4.4/usb-serial-ch341-fix-initial-modem-control-state.patch queue-4.4/usb-serial-kl5kusb105-fix-line-state-error-handling.patch queue-4.4/usb-serial-ch341-fix-resume-after-reset.patch