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Thu, 22 Oct 2026 18:03:40 +0000 Message-ID: <988c3316-82a6-4d81-aaef-b13e9e92fa01@intel.com> Date: Thu, 22 Oct 2026 11:03:37 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net] net: ethernet: ti: am65-cpts: fix support for PTP_EXTTS_REQUEST2 ioctl To: James Clark , Andrew Lunn , "David S. Miller" , Eric Dumazet , "Jakub Kicinski" , Paolo Abeni CC: Richard Cochran , Kory Maincent , Siddharth Vadapalli , Chintan Vankar , Aksh Garg , "Sebastian Andrzej Siewior" , , References: <20261020003525.1237742-1-jjc@jclark.com> <179264023362.3135.17895429756190814680@kernel.org> <20261022035226.1388675-1-jjc@jclark.com> From: Jacob Keller Content-Language: en-US In-Reply-To: <20261022035226.1388675-1-jjc@jclark.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: MW4PR04CA0342.namprd04.prod.outlook.com (2603:10b6:303:8a::17) To DS0PR11MB7381.namprd11.prod.outlook.com (2603:10b6:8:134::14) 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 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS0PR11MB7381:EE_|PH5PR11MB320987:EE_ X-MS-Office365-Filtering-Correlation-Id: b4a7d6b9-f4d4-4e39-c360-08df3066cd84 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|7416014|376014|23010399003|10067099003|18002099003|22082099003|11063799006|4143699003|56012099006; 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A v1 request >> with PTP_ENABLE_FEATURE | PTP_FALLING_EDGE, or with both edges set, was >> accepted and reached am65_cpts_extts_enable(), which ignores the flags. >> >> Now the mask has PTP_STRICT_FLAGS but not PTP_FALLING_EDGE, so those same >> v1 requests return -EOPNOTSUPP before ops->enable() is ever called. > [...] >> However, the commit message says: >> >> Only the PTP_EXTTS_REQUEST ioctl still works. >> >> This suggests v1 behaviour does not change. The patch has a Fixes: tag and >> is likely to go to stable. Could the commit message say that v1 requests >> carrying PTP_FALLING_EDGE are now rejected as well? > > The sentence that Sashiko quotes is part of the paragraph describing the > state before this patch, so it has no such implication. > > With this patch, PTP_EXTTS_REQUEST rejects a request for PTP_FALLING_EDGE > instead of accepting it and reporting rising edges. This is part of the > purpose of 7c571ac57d9d. The equivalent bcm-phy-ptp fix, 3200fdd4021d > ("broadcom: fix support for PTP_EXTTS_REQUEST2 ioctl"), made the same > change without mentioning it. > > I don't plan to do a v2 for this. Yep, I agree with this assessment. Acked-by: Jacob Keller