Some Vaio desktop computers, among them the VGC-LN51JGB multimedia PC, have
a RF receiver, multi-interface USB device 054c:0374, that is used to connect
a wireless keyboard and a wireless mouse.

The keyboard works flawlessly, but the mouse (VGP-WMS3 in my case) does not
seem to be generating any pointer events. The problem is that the mouse pointer
is wrongly declared as a constant non-data variable in the report descriptor
(see lsusb and usbhid-dump output below), with the consequence that it is
ignored by the HID code.

Add this device to the have-special-driver list and fix up the report
descriptor in the Sony-specific driver which happens to already have a fixup
for a similar firmware bug.

# lsusb -vd 054C:0374
Bus 003 Device 002: ID 054c:0374 Sony Corp.
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x054c Sony Corp.
  idProduct          0x0374
  iSerial                 0
[...]
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      1 Boot Interface Subclass
      bInterfaceProtocol      2 Mouse
      iInterface              2 RF Receiver
[...]
          Report Descriptor: (length is 100)
[...]
            Item(Global): Usage Page, data= [ 0x01 ] 1
                            Generic Desktop Controls
            Item(Local ): Usage, data= [ 0x30 ] 48
                            Direction-X
            Item(Local ): Usage, data= [ 0x31 ] 49
                            Direction-Y
            Item(Global): Report Count, data= [ 0x02 ] 2
            Item(Global): Report Size, data= [ 0x08 ] 8
            Item(Global): Logical Minimum, data= [ 0x81 ] 129
            Item(Global): Logical Maximum, data= [ 0x7f ] 127
            Item(Main  ): Input, data= [ 0x07 ] 7
                            Constant Variable Relative No_Wrap Linear
                            Preferred_State No_Null_Position Non_Volatile Bitfield

# usbhid-dump
003:002:001:DESCRIPTOR         1357910009.758544
 05 01 09 02 A1 01 05 01 09 02 A1 02 85 01 09 01
 A1 00 05 09 19 01 29 05 95 05 75 01 15 00 25 01
 81 02 75 03 95 01 81 01 05 01 09 30 09 31 95 02
 75 08 15 81 25 7F 81 07 A1 02 85 01 09 38 35 00
 45 00 15 81 25 7F 95 01 75 08 81 06 C0 A1 02 85
 01 05 0C 15 81 25 7F 95 01 75 08 0A 38 02 81 06
 C0 C0 C0 C0

Cc: linux-input@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: NFernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>