[PATCH] ASoC: SOF: Intel: hda: unsolicited RIRB response

[Lu, Brent]

> 
> IIRC we added this loop before merging all interrupt handling in one thread,
> somehow the MSI mode never worked reliably without this change, so
> maybe we don't need this loop any longer.
> 
> I'd really prefer it if we didn't tie the RIRB handing change to this loop change,
> removing the loop should only be done with *a lot of testing*.

The reason I removed the loop because I thought it's for the unsolicited response,
apparently it's not. I'd like to port the commit 6d011d5057ff

    ALSA: hda: Clear RIRB status before reading WP

to SOF driver and upload a version 2. Thanks.

Regards,
Brent