[regression] bluetooth mouse not working on 2.6.31-rc8

Hi,

my bluetooth mouse (Apple Mighty Mouse) doesn't work on 2.6.31-rc8.
It's not a recent regression though, I remember it wasn't working on
-rc2 or -rc3. It works on a 2.6.30 kernel.

The adapter itself seems to work: it's able to scan and find the
mouse, kdebluetooth4 even reports it's connected to it, but the kernel
doesn't print the usual message announcing a new input device and the
pointer on the screen remains motionless.

Thanks,
Davide