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Wed, 12 Aug 2026 05:59:23 -0700 (PDT) From: Zxyan Zhu To: Maxime Chevallier Cc: mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, andrew+netdev@lunn.ch, richardcochran@gmail.com, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, netdev@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 v2] net: stmmac: dwxgmac2: add XGMAC timestamp interrupt support Date: Wed, 12 Aug 2026 20:59:12 +0800 Message-Id: <20260812202027.976@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: <20260810100221.9166-1-zxyan0222@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Hi Maxime, On 8/12/26 5:10 PM, Maxime Chevallier wrote: > If there's an interrupt storm, then this should probably be a fix for -net > with a Fixes tag. There is no interrupt storm. XGMAC_TSIE was never enabled before this patch (XGMAC_INT_DEFAULT_EN was LPIIE | PMTIE only), and dwxgmac2_host_irq_status() masks the status with the enable mask, so XGMAC_INT_TSIS could never fire. The actual symptom is that auxiliary-snapshot extts events were never reported -- a feature that was never wired up, not a live interrupt storm. So I'd like to keep this on net-next as a new feature rather than retarget it to net. Thanks, Zxyan