Dear Thomas, very nice work indeed!
I think the easier way to include your fix would be a manual overwrite of the incriminated module, if that’s possible. Since we use mainline pi kernel, we don’t recompile it.
Does it affect a particular module or it’s something that requires a full kernel swap (and this will bring loooot of troubles with compatibility checking…).
I’m very interested, let me know
Michelangelo
PS: Which version of Volumio are you using?