> > +    complete(&smbus->irq_completion);
> 
> I only realized just now that you also want to disable the interrupt
> right here by writing to IMASK. This is a level sensitive interrupt at
> AIC level so the moment this handler returns it will fire again until
> you reach the write above after the completion wait a bit later.

This seems like a valid request. Any chance for a v4? We are so close to
being good here...