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Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break
 ath9k-based AP
From:   Johannes Berg <johannes@sipsolutions.net>
To:     Halil Pasic <pasic@linux.ibm.com>
Cc:     Linus Torvalds <torvalds@linux-foundation.org>,
        Maxime Bizon <mbizon@freebox.fr>,
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        Christoph Hellwig <hch@lst.de>,
        Oleksandr Natalenko <oleksandr@natalenko.name>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
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Date:   Mon, 28 Mar 2022 11:57:30 +0200
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On Mon, 2022-03-28 at 11:50 +0200, Johannes Berg wrote:
> No I worded that badly - the direction isn't useless, but thinking of it
> in terms of a buffer property rather than data movement is inaccurate.
> So then if we need something else to indicate how data was expected to
> be moved, the direction argument becomes useless, since it's not a
> buffer property but rather a temporal thing on a specific place that
> expected certain data movement.
> 

Yeah, umm. I should've read the whole thread of the weekend first, sorry
for the noise.

johannes