3.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Bjørn Mork <bj...@mork.no>

commit f36446cf9bbebaa03a80d95cfeeafbaf68218249 upstream.

The Huawei E173 will normally appear as 12d1:1436 in Linux.  But
the modem has another mode with different device ID and a slightly
different set of descriptors. This is the mode used by Windows like
this:

  3Modem:      USB\VID_12D1&PID_140C&MI_00\6&3A1D2012&0&0000
  Networkcard: USB\VID_12D1&PID_140C&MI_01\6&3A1D2012&0&0001
  Appli.Inter: USB\VID_12D1&PID_140C&MI_02\6&3A1D2012&0&0002
  PC UI Inter: USB\VID_12D1&PID_140C&MI_03\6&3A1D2012&0&0003

All interfaces have the same ff/ff/ff class codes in this mode.
Blacklisting the network interface to allow it to be picked up by
the network driver.

Reported-by: Thomas Schäfer <tschae...@t-online.de>
Signed-off-by: Bjørn Mork <bj...@mork.no>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/usb/serial/option.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -81,6 +81,7 @@ static void option_instat_callback(struc
 #define OPTION_PRODUCT_GTM380_MODEM            0x7201
 
 #define HUAWEI_VENDOR_ID                       0x12D1
+#define HUAWEI_PRODUCT_E173                    0x140C
 #define HUAWEI_PRODUCT_K4505                   0x1464
 #define HUAWEI_PRODUCT_K3765                   0x1465
 #define HUAWEI_PRODUCT_K4605                   0x14C6
@@ -553,6 +554,8 @@ static const struct usb_device_id option
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLX) },
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GKE) },
        { USB_DEVICE(QUANTA_VENDOR_ID, QUANTA_PRODUCT_GLE) },
+       { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_E173, 
0xff, 0xff, 0xff),
+               .driver_info = (kernel_ulong_t) &net_intf1_blacklist },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K4505, 
0xff, 0xff, 0xff),
                .driver_info = (kernel_ulong_t) &huawei_cdc12_blacklist },
        { USB_DEVICE_AND_INTERFACE_INFO(HUAWEI_VENDOR_ID, HUAWEI_PRODUCT_K3765, 
0xff, 0xff, 0xff),


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