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Date: Mon, 28 Mar 2022 11:57:30 +0200 From: Johannes Berg <johannes@...solutions.net> To: Halil Pasic <pasic@...ux.ibm.com> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Maxime Bizon <mbizon@...ebox.fr>, Toke Høiland-Jørgensen <toke@...e.dk>, Robin Murphy <robin.murphy@....com>, Christoph Hellwig <hch@....de>, Oleksandr Natalenko <oleksandr@...alenko.name>, Marek Szyprowski <m.szyprowski@...sung.com>, Kalle Valo <kvalo@...nel.org>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Olha Cherevyk <olha.cherevyk@...il.com>, iommu <iommu@...ts.linux-foundation.org>, linux-wireless <linux-wireless@...r.kernel.org>, Netdev <netdev@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable <stable@...r.kernel.org> Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP 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
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