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    Subject[PATCH 3.13 256/259] net: huawei_cdc_ncm: add "subclass 3" devices
    Date
    3.13.11.6 -stable review patch.  If anyone has any objections, please let me know.

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

    From: =?UTF-8?q?Bj=C3=B8rn=20Mork?= <bjorn@mork.no>

    [ Upstream commit c2a6c7813f1ffae636e369b5d7011c9f518d3cd9 ]

    Huawei's usage of the subclass and protocol fields is not 100%
    clear to us, but there appears to be a very strict system.

    A device with the "shared" device ID 12d1:1506 and this NCM
    function was recently reported (showing only default altsetting):

    Interface Descriptor:
    bLength 9
    bDescriptorType 4
    bInterfaceNumber 1
    bAlternateSetting 0
    bNumEndpoints 1
    bInterfaceClass 255 Vendor Specific Class
    bInterfaceSubClass 3
    bInterfaceProtocol 22
    iInterface 8 CDC Network Control Model (NCM)
    ** UNRECOGNIZED: 05 24 00 10 01
    ** UNRECOGNIZED: 06 24 1a 00 01 1f
    ** UNRECOGNIZED: 0c 24 1b 00 01 00 04 10 14 dc 05 20
    ** UNRECOGNIZED: 0d 24 0f 0a 0f 00 00 00 ea 05 03 00 01
    ** UNRECOGNIZED: 05 24 06 01 01
    Endpoint Descriptor:
    bLength 7
    bDescriptorType 5
    bEndpointAddress 0x85 EP 5 IN
    bmAttributes 3
    Transfer Type Interrupt
    Synch Type None
    Usage Type Data
    wMaxPacketSize 0x0010 1x 16 bytes
    bInterval 9

    Cc: Enrico Mioso <mrkiko.rs@gmail.com>
    Signed-off-by: Bjørn Mork <bjorn@mork.no>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/net/usb/huawei_cdc_ncm.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/usb/huawei_cdc_ncm.c b/drivers/net/usb/huawei_cdc_ncm.c
    index 75d9ee4..a014625 100644
    --- a/drivers/net/usb/huawei_cdc_ncm.c
    +++ b/drivers/net/usb/huawei_cdc_ncm.c
    @@ -207,6 +207,9 @@ static const struct usb_device_id huawei_cdc_ncm_devs[] = {
    { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x02, 0x76),
    .driver_info = (unsigned long)&huawei_cdc_ncm_info,
    },
    + { USB_VENDOR_AND_INTERFACE_INFO(0x12d1, 0xff, 0x03, 0x16),
    + .driver_info = (unsigned long)&huawei_cdc_ncm_info,
    + },

    /* Terminating entry */
    {
    --
    1.9.1
    --
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