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[209.85.167.48]) by smtp.gmail.com with ESMTPSA id u12-20020a19600c000000b0044a2e4ce20esm796944lfb.193.2022.03.25.12.28.00 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 25 Mar 2022 12:28:00 -0700 (PDT) Received: by mail-lf1-f48.google.com with SMTP id w27so15014036lfa.5 for ; Fri, 25 Mar 2022 12:28:00 -0700 (PDT) X-Received: by 2002:a19:e048:0:b0:448:2caa:7ed2 with SMTP id g8-20020a19e048000000b004482caa7ed2mr9229114lfj.449.1648236479896; Fri, 25 Mar 2022 12:27:59 -0700 (PDT) MIME-Version: 1.0 References: <1812355.tdWV9SEqCh@natalenko.name> <31434708dcad126a8334c99ee056dcce93e507f1.camel@freebox.fr> <12981608.uLZWGnKmhe@natalenko.name> In-Reply-To: <12981608.uLZWGnKmhe@natalenko.name> From: Linus Torvalds Date: Fri, 25 Mar 2022 12:27:43 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP To: Oleksandr Natalenko Cc: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , Greg Kroah-Hartman , Netdev , Kalle Valo , linux-wireless , Linux Kernel Mailing List , stable , "David S. 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[209.85.167.49]) by smtp.gmail.com with ESMTPSA id n22-20020a2e7216000000b0024ac2b26734sm11035ljc.23.2022.03.25.12.28.00 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 25 Mar 2022 12:28:01 -0700 (PDT) Received: by mail-lf1-f49.google.com with SMTP id bt26so14994305lfb.3 for ; Fri, 25 Mar 2022 12:28:00 -0700 (PDT) X-Received: by 2002:a19:e048:0:b0:448:2caa:7ed2 with SMTP id g8-20020a19e048000000b004482caa7ed2mr9229114lfj.449.1648236479896; Fri, 25 Mar 2022 12:27:59 -0700 (PDT) MIME-Version: 1.0 References: <1812355.tdWV9SEqCh@natalenko.name> <31434708dcad126a8334c99ee056dcce93e507f1.camel@freebox.fr> <12981608.uLZWGnKmhe@natalenko.name> In-Reply-To: <12981608.uLZWGnKmhe@natalenko.name> From: Linus Torvalds Date: Fri, 25 Mar 2022 12:27:43 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [REGRESSION] Recent swiotlb DMA_FROM_DEVICE fixes break ath9k-based AP To: Oleksandr Natalenko Cc: Maxime Bizon , =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= , 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 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Fri, Mar 25, 2022 at 12:26 PM Oleksandr Natalenko wrote: > > On p=C3=A1tek 25. b=C5=99ezna 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 d= efinitely 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. Linus