Nitpick: module_param, if module is compiled in, adds a prefix to parameterHopefully my last patch submission related to this file, here's an updated one using module_param_named so the external name is just psx_ (I'm leaving the internal name as gc_psx_ just for consistency with the rest of the file).
names, so the parameters will be:
gamecon.gc
gamecon.gc_2
gamecon.gc_3
gamecon.gc_psx_delay
gamecon.gc_psx_ddr
At least with PSX stuff it would be nice to drop gc_ prefix.