Comment # 1 on bug 1177021 from Takashi Iwai

I backported the corresponding upstream kernel fix (the commit
04896832c94aae4842100cafb8d3a73e1bed3a45) now.  It'll be included in the next
update kernel (hopefully).

However, the firmware file can't be distributed in the official package until
it's submitted / included in the upstream kernel-firmware tree.  For that
piece, you'd need to handle manually by yourself.