I have a Gravis gamepad that HAL seems to think is a mouse rather than a
joystick:

udi = '/org/freedesktop/Hal/devices/usb_device_428_4001_noserial_if0_logicaldev_input'
  info.capabilities = {'input', 'input.mouse'} (string list)
  info.category = 'input'  (string)
  info.parent = '/org/freedesktop/Hal/devices/usb_device_428_4001_noserial_if0'  (string)
  info.product = 'Gravis GamePad Pro USB'  (string)
  info.udi = '/org/freedesktop/Hal/devices/usb_device_428_4001_noserial_if0_logicaldev_input'  (string)
  input.device = '/dev/input/event10'  (string)
  input.originating_device = '/org/freedesktop/Hal/devices/usb_device_428_4001_noserial_if0'  (string)
  input.physical_device = '/org/freedesktop/Hal/devices/usb_device_428_4001_noserial_if0'  (string)
  input.product = 'Gravis GamePad Pro USB'  (string)
  linux.device_file = '/dev/input/event10'  (string)
  linux.hotplug_type = 2  (0x2)  (int)
  linux.subsystem = 'input'  (string)
  linux.sysfs_path = '/sys/class/input/input10/event10'  (string)

This also happens for my Sidewinder joystick (also USB).