[3.13.y.z extended stable] Patch "USB: sierra: avoid CDC class functions on "68A3" devices" has been added to staging queue

Kamal Mostafa kamal at canonical.com
Wed Oct 8 22:14:01 UTC 2014

This is a note to let you know that I have just added a patch titled

    USB: sierra: avoid CDC class functions on "68A3" devices

to the linux-3.13.y-queue branch of the 3.13.y.z extended stable tree 
which can be found at:


This patch is scheduled to be released in version

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y.z tree, see



>From 04b59f6761786eb691cda3413866ebb6f7f97d41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <bjorn at mork.no>
Date: Thu, 28 Aug 2014 14:11:23 +0200
Subject: USB: sierra: avoid CDC class functions on "68A3" devices
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

commit 049255f51644c1105775af228396d187402a5934 upstream.

Sierra Wireless Direct IP devices using the 68A3 product ID
can be configured for modes including a CDC ECM class function.
The known example uses interface numbers 12 and 13 for the ECM
control and data interfaces respectively, consistent with CDC
MBIM function interface numbering on other Sierra devices.

It seems cleaner to restrict this driver to the ff/ff/ff
vendor specific interfaces rather than increasing the already
long interface number blacklist.  This should be more future
proof if Sierra adds more class functions using interface
numbers not yet in the blacklist.

Signed-off-by: Bjørn Mork <bjorn at mork.no>
Signed-off-by: Johan Hovold <johan at kernel.org>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
 drivers/usb/serial/sierra.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index b6910b7..aa69283 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -281,14 +281,16 @@ static const struct usb_device_id id_table[] = {
 	/* Sierra Wireless HSPA Non-Composite Device */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
 	{ USB_DEVICE(0x1199, 0x6893) },	/* Sierra Wireless Device */
-	{ USB_DEVICE(0x1199, 0x68A3), 	/* Sierra Wireless Direct IP modems */
+	/* Sierra Wireless Direct IP modems */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
 	/* AT&T Direct IP LTE modems */
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
-	{ USB_DEVICE(0x0f3d, 0x68A3), 	/* Airprime/Sierra Wireless Direct IP modems */
+	/* Airprime/Sierra Wireless Direct IP modems */
+	{ USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
 	  .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist


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