From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:55322 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807AbcKHKhQ (ORCPT ); Tue, 8 Nov 2016 05:37:16 -0500 Subject: Patch "USB: serial: cp210x: fix tiocmget error handling" has been added to the 4.4-stable tree To: johan@kernel.org, gregkh@linuxfoundation.org Cc: , From: Date: Tue, 08 Nov 2016 11:36:28 +0100 Message-ID: <14786013881718@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: cp210x: fix tiocmget error handling 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-cp210x-fix-tiocmget-error-handling.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 de24e0a108bc48062e1c7acaa97014bce32a919f Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 19 Oct 2016 15:45:07 +0200 Subject: USB: serial: cp210x: fix tiocmget error handling From: Johan Hovold commit de24e0a108bc48062e1c7acaa97014bce32a919f upstream. The current tiocmget implementation would fail to report errors up the stack and instead leaked a few bits from the stack as a mask of modem-status flags. Fixes: 39a66b8d22a3 ("[PATCH] USB: CP2101 Add support for flow control") Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/cp210x.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/usb/serial/cp210x.c +++ b/drivers/usb/serial/cp210x.c @@ -845,7 +845,9 @@ static int cp210x_tiocmget(struct tty_st unsigned int control; int result; - cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); + result = cp210x_get_config(port, CP210X_GET_MDMSTS, &control, 1); + if (result) + return result; result = ((control & CONTROL_DTR) ? TIOCM_DTR : 0) |((control & CONTROL_RTS) ? TIOCM_RTS : 0) Patches currently in stable-queue which might be from johan@kernel.org are queue-4.4/usb-serial-cp210x-fix-tiocmget-error-handling.patch queue-4.4/usb-serial-ftdi_sio-add-support-for-infineon-triboard-tc2x7.patch queue-4.4/usb-serial-fix-potential-null-dereference-at-probe.patch