That code is rather far away from the code you're changing and it's
really not clear that this will do the right thing for new devices, it
already appears that we're handling two devices without obvious code for
that (the regulator IDs get reused AFAICT). If there were a switch
statement right there it'd be clearer.
Part of this is a reviewability thing - I initially stopped on the patch
because it looked like it was using the enable field for something other
than the intended purpose and now there's all this chasing around to see
if the code is OK.