You may want to take a look at the user-mode driver infrastructure patches, which do almost exactly what you're trying to do.
Get them from http://www.gelato.unsw.edu.au/cgi-bin/viewcvs.cgi/cvs/kernel/usrdrivers/kernel-2.6.12-rc3/ -- Dr Peter Chubb http://www.gelato.unsw.edu.au peterc AT gelato.unsw.edu.au The technical we do immediately, the political takes *forever* - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
