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Miller" , Nicolas Ferre , Alexandre Belloni , Claudiu Beznea , Koichiro Den , Niklas Cassel , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev Subject: Re: [PATCH 1/8] dmaengine: Add API to combine configuration and preparation (sg and single) Message-ID: References: <20251208-dma_prep_config-v1-0-53490c5e1e2a@nxp.com> <20251208-dma_prep_config-v1-1-53490c5e1e2a@nxp.com> <20251209063809.GA27728@lst.de> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251209063809.GA27728@lst.de> X-ClientProxiedBy: SJ0PR05CA0201.namprd05.prod.outlook.com (2603:10b6:a03:330::26) To DU2PR04MB8951.eurprd04.prod.outlook.com (2603:10a6:10:2e2::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DU2PR04MB8951:EE_|PR3PR04MB7404:EE_ X-MS-Office365-Filtering-Correlation-Id: cc4208ce-a286-4d85-bb74-08de373a4936 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|52116014|7416014|376014|19092799006|366016|1800799024|38350700014; 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This > > works well when configuration is done only once during initialization. > > > > However, in cases where the burst length or source/destination address must > > be adjusted for each transfer, calling two functions is verbose and > > requires additional locking to ensure both steps complete atomically. > > > > Add a new API and callback device_prep_slave_sg_config that combines > > configuration and preparation into a single operation. If the configuration > > argument is passed as NULL, fall back to the existing implementation. > > Maybe this would be a good time to start retiring the "slave" naming > and come up with shorter names as a win-win situation? Yes, 'prep_sg_config' or 'prep_sg' should be enough. Frank >