> Attached is a patch that takes this functionality from XFree86 and
> integrates it into gpm.  And adds a mouse type specifically for this
> auto detection.

I though a while about this, and I'd like to do it in another way, to
avoid clubbering the mouse table every so often.

What I'd like to have is a "pnp.c" file, that includes the probing
functions as well as the table of pnp mouse types. Similarly to
synaptics and twiddler support, then, the functions in mice.c can call
the ones defined in pnp.c.

The advantage of this is that there is no need to change the mouse
type data structure, and no need to add ID's of mice to the table of
types, which will quickly become exceedingly long.  Moreover, having
the table of pnp ID's as an external object allows to export it to an
external text file, so that adding support for a new mouse type (a pnp
one) would be trivial: no more "plese try this patch, recompile and
tell us if it works" to ask to users, just "pleas add this line to
/etc/gpm-pnp.conf and try again".

/alessandro