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Tue, 20 Oct 2026 01:23:14 -0700 (PDT) Received: from cantal.lan ([58.136.73.153]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cd6549ee946sm4419397a12.20.2026.10.20.01.23.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Oct 2026 01:23:13 -0700 (PDT) From: James Clark To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Richard Cochran , Jacob Keller , Kory Maincent , Siddharth Vadapalli , Chintan Vankar , Aksh Garg , Sebastian Andrzej Siewior , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH net] net: ethernet: ti: am65-cpts: fix support for PTP_EXTTS_REQUEST2 ioctl Date: Tue, 20 Oct 2026 15:23:07 +0700 Message-ID: <20261020082307.1267591-1-jjc@jclark.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261020003525.1237742-1-jjc@jclark.com> References: <20261020003525.1237742-1-jjc@jclark.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 20 Oct 2026 07:35:25 +0700, James Clark wrote: > Commit 7c571ac57d9d ("net: ptp: introduce .supported_extts_flags to > ptp_clock_info") modified the PTP core to validate the supported flags > of external timestamp requests, rather than relying on each driver to > check them. > > am65_cpts_extts_enable() ignores the flags, and am65-cpts was not given > any .supported_extts_flags. Since PTP_EXTTS_REQUEST2 always implies > PTP_STRICT_FLAGS, the core now rejects every PTP_EXTTS_REQUEST2 for this > driver with -EOPNOTSUPP, where before that commit the same requests > succeeded. Adding Aksh Garg and Sebastian Andrzej Siewior, whom I missed on the Cc list. The full patch is at https://lore.kernel.org/all/20261020003525.1237742-1-jjc@jclark.com/