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Date: Thu, 24 Mar 2022 09:55:44 +0100 From: Oleksandr Natalenko <oleksandr@...alenko.name> To: Linus Torvalds <torvalds@...ux-foundation.org> Cc: Halil Pasic <pasic@...ux.ibm.com>, Christoph Hellwig <hch@....de>, Marek Szyprowski <m.szyprowski@...sung.com>, Robin Murphy <robin.murphy@....com>, Toke Høiland-Jørgensen <toke@...e.dk>, 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 Hello. On středa 23. března 2022 18:27:21 CET Linus Torvalds wrote: > On Wed, Mar 23, 2022 at 12:19 AM Oleksandr Natalenko > <oleksandr@...alenko.name> wrote: > > These commits appeared in v5.17 and v5.16.15, and both kernels are > > broken for me. I'm pretty confident these commits make the difference > > since I've built both v5.17 and v5.16.15 without them, and it fixed > > the issue. > > Can you double-check (or just explicitly confirm if you already did > that test) that you need to revert *both* of those commits, and it's > the later "rework" fix that triggers it? I can confirm that if I revert aa6f8dcbab47 only, but leave ddbd89deb7d3 in place, AP works. So, it seems that the latest "rework" triggers the issue for me. Thanks. -- Oleksandr Natalenko (post-factum)
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