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[82.37.195.13]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48e6d8e3247sm64622295e9.8.2026.05.11.08.41.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 May 2026 08:41:31 -0700 (PDT) Date: Mon, 11 May 2026 16:41:28 +0100 From: Daniel Thompson To: Xilin Wu Cc: Alex Elder , andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, maxime.chevallier@bootlin.com, rmk+kernel@armlinux.org.uk, andersson@kernel.org, konradybcio@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linusw@kernel.org, brgl@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, mohd.anwar@oss.qualcomm.com, a0987203069@gmail.com, alexandre.torgue@foss.st.com, ast@kernel.org, boon.khai.ng@altera.com, chenchuangyu@xiaomi.com, chenhuacai@kernel.org, daniel@iogearbox.net, hawk@kernel.org, hkallweit1@gmail.com, inochiama@gmail.com, john.fastabend@gmail.com, julianbraha@gmail.com, livelycarpet87@gmail.com, matthew.gerlach@altera.com, mcoquelin.stm32@gmail.com, me@ziyao.cc, prabhakar.mahadev-lad.rj@bp.renesas.com, richardcochran@gmail.com, rohan.g.thomas@altera.com, sdf@fomichev.me, siyanteng@cqsoftware.com.cn, weishangjuan@eswincomputing.com, wens@kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net-next 10/12] net: stmmac: tc956x: add TC956x/QPS615 support Message-ID: References: <20260501155421.3329862-1-elder@riscstar.com> <20260501155421.3329862-11-elder@riscstar.com> <7f3a0f16-5159-4bbc-8b15-9b5841603bf6@riscstar.com> <3A5C0389E7C0D241+21a4f16b-1af8-46ac-8831-0c1b49694df0@radxa.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3A5C0389E7C0D241+21a4f16b-1af8-46ac-8831-0c1b49694df0@radxa.com> Hi Xilin On Thu, May 07, 2026 at 09:57:26PM +0800, Xilin Wu wrote: > Do you think if a shutdown callback like this is required? It looks like the > driver sometimes does a MDIO MMIO read when the PCIe link is down, causing > the board to reset due to SoC side PCIe NoC timeout. > > After this change, the board can always shutdown gracefully. I've preferred controlled reboots to power cycles throughout development and I hadn't spotted any major problems with graceful shutdown (which isn't to say there have never crashes but generally I expect `reboot` to provoke a reboot successfully). Just to be sure configured my board with irq=POLL (to match your setup) and still can't reproduce. We mostly run Debian/systemd so there might be something happening in userspace to sequence things nicely. However I have ruled out NetworkManager.service and networking.service (stopped this services does *not* tear down the network link). Can you share a bit more about how to reproduce the problem (including reliability of reproduction)? Daniel.