Re: ps2 keyboard filter hook

[Alan Cox]

> The registered drivers are called (in order of registration) for every scancode,
> and they may change or consume the scancode (or allow it to pass).  Also the
> 'filters' are given a function to send an variable-sized buffer to the keyboard
> output port; this function is synchronized using a semaphore which also
> coordinates with pckbd_leds().

X11 likes to talk direct to the PS/2 port.  I actually think you should instead
talk to Vojtech for the mainstream kernel about the input device work. It 
sounds much cleaner and more close to what you need