Comment 6 for bug 321485

This bug also affects the MotoROKR Z6 mobile phone. I have not tried the author's patch into 10-modem.fdi. The lsusb data are as follows:

Bus 005 Device 003: ID 22b8:6422 Motorola PCS
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 2 Communications
  bDeviceSubClass 2 Abstract (modem)
  bDeviceProtocol 0 None
  bMaxPacketSize0 64
  idVendor 0x22b8 Motorola PCS
  idProduct 0x6422
  bcdDevice 1.01
  iManufacturer 3
  iProduct 2
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 67
    bNumInterfaces 2
    bConfigurationValue 1
    iConfiguration 7
    bmAttributes 0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower 500mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 1
      bInterfaceClass 2 Communications
      bInterfaceSubClass 2 Abstract (modem)
      bInterfaceProtocol 1 AT-commands (v.25ter)
      iInterface 8
      CDC Header:
        bcdCDC 1.10
      CDC Call Management:
        bmCapabilities 0x03
          call management
          use DataInterface
        bDataInterface 1
      CDC Union:
        bMasterInterface 0
        bSlaveInterface 1
      CDC ACM:
        bmCapabilities 0x02
          line coding and serial state
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x81 EP 1 IN
        bmAttributes 3
          Transfer Type Interrupt
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0040 1x 64 bytes
        bInterval 4
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 1
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 10 CDC Data
      bInterfaceSubClass 0 Unused
      bInterfaceProtocol 0
      iInterface 9
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x86 EP 6 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x02 EP 2 OUT
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 0