08.06.2021 23:45, Arnd Bergmann:

The idea was that all non-rx events that were pending at the start of the
function have been Acked at this point, by writing to the IntrMask
register before processing the particular event. If the same kind of event
arrives after the Ack, then opening in the mask should immediately trigger
the interrupt handler, which reactivates the poll function.

Ok, it works, indeed. The overall bitrate seems lower somewhat.
I'll re-test and benchmark some few variants (e.g. with and without busy 
loop) and report my findings.


Thank you,

Regards,
Nikolai