Comment 5 for bug 1449502

I've done some tests:
- it doesn't matter which port I plug in the mobile wifi - suspend will fail
- if the mobile wifi is turned off, suspend works fine (no suprise here)
- plugging in my usb stick, doesn't have a negative effect
- plugging in my external hard drive, doesn't have a negative effect on suspend

Some information about the mobile wifi:

sven@svenBlack:~$ lsusb | grep Huawei
Bus 001 Device 007: ID 12d1:14fe Huawei Technologies Co., Ltd.
sven@svenBlack:~$ lsusb -vs 001:007

Bus 001 Device 007: ID 12d1:14fe Huawei Technologies Co., Ltd.
Couldn't open device, some information will be missing
Device Descriptor:
  bLength 18
  bDescriptorType 1
  bcdUSB 2.00
  bDeviceClass 0 (Defined at Interface level)
  bDeviceSubClass 0
  bDeviceProtocol 0
  bMaxPacketSize0 64
  idVendor 0x12d1 Huawei Technologies Co., Ltd.
  idProduct 0x14fe
  bcdDevice 1.02
  iManufacturer 2
  iProduct 1
  iSerial 0
  bNumConfigurations 1
  Configuration Descriptor:
    bLength 9
    bDescriptorType 2
    wTotalLength 32
    bNumInterfaces 1
    bConfigurationValue 1
    iConfiguration 0
    bmAttributes 0x80
      (Bus Powered)
    MaxPower 500mA
    Interface Descriptor:
      bLength 9
      bDescriptorType 4
      bInterfaceNumber 0
      bAlternateSetting 0
      bNumEndpoints 2
      bInterfaceClass 8 Mass Storage
      bInterfaceSubClass 6 SCSI
      bInterfaceProtocol 80 Bulk-Only
      iInterface 0
      Endpoint Descriptor:
        bLength 7
        bDescriptorType 5
        bEndpointAddress 0x0f EP 15 OUT
        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 0x8f EP 15 IN
        bmAttributes 2
          Transfer Type Bulk
          Synch Type None
          Usage Type Data
        wMaxPacketSize 0x0200 1x 512 bytes
        bInterval 0