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Date:   Fri, 25 Mar 2022 12:27:43 -0700
From:   Linus Torvalds <>
To:     Oleksandr Natalenko <>
Cc:     Maxime Bizon <>,
        Toke Høiland-Jørgensen <>,
        Robin Murphy <>,
        Christoph Hellwig <>,
        Halil Pasic <>,
        Marek Szyprowski <>,
        Kalle Valo <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Olha Cherevyk <>,
        iommu <>,
        linux-wireless <>,
        Netdev <>,
        Linux Kernel Mailing List <>,
        Greg Kroah-Hartman <>,
        stable <>
Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break
 ath9k-based AP

On Fri, Mar 25, 2022 at 12:26 PM Oleksandr Natalenko
<> wrote:
> On pátek 25. března 2022 19:30:21 CET Linus Torvalds wrote:
> > The reason the ath9k issue was found quickly
> > is very likely *NOT* because ath9k is the only thing affected. No,
> > it's because ath9k is relatively common.
> Indeed. But having a wife who complains about non-working Wi-Fi printer definitely helps in finding the issue too.

Well, maybe we should credit her in the eventual resolution (whatever
it ends up being).

Although probably not using that exact wording.


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