Yeah, I do understand this bug. My question was if that is the only bug.

Sorry, yes this is the only one.

quoted

So max_nr_keys seems wrong in case of new API.

It's not that simple, actually.
The max_nr_keys thing was never meant to specify which API we're on.
It was invented to do the RCMTA vs *oldcrappymechanismiforgotthenameof*.
max_nr_keys essentially became obsolete and dead code when b43 did not
support <rev5 anymore. I will submit a patch which removes it and cleans up
the code alltogether.

Ok, thanks