Patch "qmi_wwan: fix entry for HP lt4112 LTE/HSPA+ Gobi 4G Module" has been added to the 4.2-stable tree

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

qmi_wwan: fix entry for HP lt4112 LTE/HSPA+ Gobi 4G Module

to the 4.2-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:

     qmi_wwan-fix-entry-for-hp-lt4112-lte-hspa-gobi-4g-module.patch

and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <[email protected]>
Date: Sun, 1 Nov 2015 01:34:50 +0100
Subject: qmi_wwan: fix entry for HP lt4112 LTE/HSPA+ Gobi 4G Module
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <[email protected]>

[ Upstream commit 70910791731b5956171e1bfcad707766b8e18fee ]

The lt4112 is a HP branded Huawei me906e modem. Like other Huawei modems, it does not have a fixed interface to function mapping. Instead it uses a Huawei specific scheme: functions are mapped by subclass and protocol.

However, the HP vendor ID is used for modems from many different manufacturers using different schemes, so we cannot apply a generic vendor rule like we do for the Huawei vendor ID.

Replace the previous lt4112 entry pointing to an arbitrary interface number with a device specific subclass + protocol match.

---
 drivers/net/usb/qmi_wwan.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

@@ -539,6 +539,10 @@ static const struct usb_device_id produc
 					      USB_CDC_PROTO_NONE),
 		.driver_info        = (unsigned long)&qmi_wwan_info,
 	},
+	{	/* HP lt4112 LTE/HSPA+ Gobi 4G Module (Huawei me906e) */
+		USB_DEVICE_AND_INTERFACE_INFO(0x03f0, 0x581d, USB_CLASS_VENDOR_SPEC, 1, 7),
+		.driver_info = (unsigned long)&qmi_wwan_info,
+	},
 
 	/* 3. Combined interface devices matching on interface number */
 	{QMI_FIXED_INTF(0x0408, 0xea42, 4)},	/* Yota / Megafon M100-1 */

@@ -790,7 +794,6 @@ static const struct usb_device_id produc
 	{QMI_FIXED_INTF(0x413c, 0x81a8, 8)},	/* Dell Wireless 5808 Gobi(TM) 4G LTE Mobile Broadband Card */
 	{QMI_FIXED_INTF(0x413c, 0x81a9, 8)},	/* Dell Wireless 5808e Gobi(TM) 4G LTE Mobile Broadband Card */
 	{QMI_FIXED_INTF(0x03f0, 0x4e1d, 8)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
-	{QMI_FIXED_INTF(0x03f0, 0x581d, 4)},	/* HP lt4112 LTE/HSPA+ Gobi 4G Module (Huawei me906e) */
 
 	/* 4. Gobi 1000 devices */
 	{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)},	/* Acer Gobi Modem Device */

Patches currently in stable-queue which might be from [email protected] are

queue-4.2/qmi_wwan-add-sierra-wireless-mc74xx-em74xx.patch queue-4.2/qmi_wwan-fix-entry-for-hp-lt4112-lte-hspa-gobi-4g-module.patch