Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP

From: Christoph Hellwig
Date: Fri Mar 25 2022 - 12:32:13 EST


On Thu, Mar 24, 2022 at 07:02:16PM +0100, Halil Pasic wrote:
> > If
> > ddbd89deb7d3 alone turns out to work OK then I'd be inclined to try a
> > partial revert of just that one hunk.
> >
>
> I'm not against being pragmatic and doing the partial revert. But as
> explained above, I do believe for correctness of swiotlb we ultimately
> do need that change. So if the revert is the short term solution,
> what should be our mid-term road-map?

Unless I'm misunderstanding this thread we found the bug in ath9k
and have a fix for that now?