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Thu, 22 Oct 2026 15:56:10 +0000 Date: Thu, 22 Oct 2026 10:55:59 -0500 From: Frank Li To: Arnav Kapoor Cc: Jonathan Cameron , David Lechner , Nuno =?iso-8859-1?Q?S=E1?= , Andy Shevchenko , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , linux-iio@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iio: adc: fsl-imx25-gcq: check the return value of the Message-ID: References: <20261021225450.628499-1-kapoorarnav43@gmail.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261021225450.628499-1-kapoorarnav43@gmail.com> X-ClientProxiedBy: PH8PR07CA0039.namprd07.prod.outlook.com (2603:10b6:510:2cf::7) To MI3PR04MB12438.eurprd04.prod.outlook.com (2603:10a6:290:76::14) X-Archived-By: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MI3PR04MB12438:EE_|DUZPR04MB10061:EE_ X-MS-Office365-Filtering-Correlation-Id: 2085cf5e-b34f-4e09-709a-08df3054fdce X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|1800799024|7416014|19092799006|366016|261021121427099003|56012099006|261009223027099003|11063799006|10067099003|18002099003|22082099003; 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Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] > > The driver ignores the return value of all the regmap accesses. If one > of them fails, e.g. because the memory mapped registers can't be > accessed, the driver just continues with an undefined state. MMIO never return failure. if write register fail at irq, it will cause irq storm. Frank