From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from DB3PR0202CU003.outbound.protection.outlook.com (mail-northeuropeazon11010057.outbound.protection.outlook.com [52.101.84.57]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 998CD326D63; Thu, 19 Feb 2026 21:12:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.84.57 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771535545; cv=fail; b=bYRvY+ZntgCH5YP8VfmbwP7YIz+DlBwkAf+FV23aSvObf6hxmL5kQ9d03t8vteIPW/9lJH4ZVl3jmygZHgCy+az6I6/hRgiZyK7ZYTzzXUxffeYL0sNeyX3n7uxz03RRmcl4TWIWvMig5Nt+5SNmxld6+yrKFELlLJJc4Z4SdI8= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771535545; c=relaxed/simple; bh=JuKUHVgQp120mGjxdfo1gL8JixVgbp9ZukMSkcedjbk=; h=From:To:CC:Subject:Date:Message-ID:References:In-Reply-To: Content-Type:MIME-Version; b=IOs7POKYVCDuK0qABj+VZRFwGT8MTw8wFRoJli134IMym+/e8HC0D7h2yamTO5cTQP1HybU2PFJZpbDa7Ca4xMB65IlYmZx9rXkrkn20iHK1DhxJPNHyNKN//X1PrTuHIbqITHwBEDLHQ/jdwY57gHqGpHvcKJjTOYVlp6pCJT0= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b=jSN0byUp; arc=fail smtp.client-ip=52.101.84.57 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=nxp.com header.i=@nxp.com header.b="jSN0byUp" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=bz8LsPF70zDb+i1x+/xogPk7FbLsb2wdRPouRBJai1TBnD20xPJq+CuPgFECaNQP1T51NtSW7wLkvKivczPXx0vcPo6aHWqVA9haLmi0MBSQqUTEk2OzUeJVSAc3WEekt6Js15sH9i/mRcI9XljYeYLj6xFwCsLaAcMbMvUPEW34JAqZYa6oWspD8Dydu5PtsnxhE3pzyo3SiwEb3QAnERwCyG6dMwMnthAo0FvC3zwsYsKnllrnve9Ve5y7kvAXWinV0jjpyj2cd4YnGcNLVjQ/BPWiPS4GaY0HlKdJHmlvT6kiClhzOTjdtFK16edzjuPV8ycnb8VveH230B41+w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=A+Rmmzjz3EZ4t0RoWec6g5AfSe0PI6mliMrYOadLQ2g=; b=aSMNG0yZUxGzklnyfAY3bE2FskbIdiQGlO19L+SQv3Qh/WMEEKeK5qFsnhCaHYn40v2tAAUR8r2ojFAoZ4ubKjOzyLNDATg1XEkVmEqROsJzgPSv3/uJBqZzKTrgCRuPCVu36X6/rSqTl6pxSyeOueEAZE0hafdxWJFg0TMQ7s600OhRy1QYpugLzaAQEiM+4JnAbPU0QpLhGEBjVv9P62U3w+AS3VBmhB4qrxBZfNJQC86JkPG/ohtyM4LbRwum7Ib7kkUWHMXaMi92PKgKQ4fxdvyPw8HvLwt+Zjjom3QS8i6zYwEoMNz1GHNKbjXAKg/HT46t/Mm0wmoZ6N6SHw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=A+Rmmzjz3EZ4t0RoWec6g5AfSe0PI6mliMrYOadLQ2g=; b=jSN0byUpMS8+00QTcHZiibeXKnk1NYtVGxp7lreQJniBvIYw04V58D5dubsHXCVbo8v5hLquL9EzJT97UUavv3Q9E9bcRTNRllBKsThYDNUkKqzDnPDZgWeIvd5YW+pdbkv2eYC9NgQGoYHnIxoHxRMjdhJSMtH1IIvwx8g6lZNndhTXTbTxfZ152tUgkPofYxqGPwONQLJAhtMUnQYU0k5DjEpyxWd9RLAIDcBpDlco8WLMpqQ1DOWRtJSvrUcqZUTLc/Z0igyeUajRpRrfIfzl9wgfUw6L86SyEXQdEj5fUgL938xwJeZQtzDEC6Oal0THJC5HR8RtjhU0lBGUug== Received: from AS8PR04MB9176.eurprd04.prod.outlook.com (2603:10a6:20b:44b::7) by AS5PR04MB10059.eurprd04.prod.outlook.com (2603:10a6:20b:680::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9632.15; Thu, 19 Feb 2026 21:12:19 +0000 Received: from AS8PR04MB9176.eurprd04.prod.outlook.com ([fe80::ba87:1cd1:53d9:fcd7]) by AS8PR04MB9176.eurprd04.prod.outlook.com ([fe80::ba87:1cd1:53d9:fcd7%6]) with mapi id 15.20.9632.015; Thu, 19 Feb 2026 21:12:19 +0000 From: Shenwei Wang To: Andrew Lunn CC: Arnaud POULIQUEN , Linus Walleij , Bartosz Golaszewski , Jonathan Corbet , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Mathieu Poirier , Frank Li , Sascha Hauer , Shuah Khan , "linux-gpio@vger.kernel.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Pengutronix Kernel Team , Fabio Estevam , Peng Fan , "devicetree@vger.kernel.org" , "linux-remoteproc@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , dl-linux-imx , Bartosz Golaszewski Subject: Re: [PATCH v8 3/4] gpio: rpmsg: add generic rpmsg GPIO driver Thread-Topic: [PATCH v8 3/4] gpio: rpmsg: add generic rpmsg GPIO driver Thread-Index: AQHcoeRuhGAMnODcU0y5b19xK+plTQ== Date: Thu, 19 Feb 2026 21:12:19 +0000 Message-ID: References: <20260212213656.662437-1-shenwei.wang@nxp.com> <20260212213656.662437-4-shenwei.wang@nxp.com> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; x-ms-publictraffictype: Email x-ms-traffictypediagnostic: AS8PR04MB9176:EE_|AS5PR04MB10059:EE_ x-ms-office365-filtering-correlation-id: cbf9f278-2f79-4770-bbc4-08de6ffb9119 x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0;ARA:13230040|19092799006|1800799024|366016|7416014|376014|38070700021; x-microsoft-antispam-message-info: =?us-ascii?Q?vaY+qekZF4SPLv40ZyKjAhSRR9pFYd3pJjOp28HGEtPkCNUyGy3MtnSwrzLK?= =?us-ascii?Q?JHYRYdaIIoJw0wXWwoXhaVXAzXAy+M7TEn2iy7ZpaiXofoLv8mOgy7l4hMeN?= =?us-ascii?Q?oeb5Zelx/UHF9YArt/396FJV3McFuLCHFFlqIXSEoVsn8CtO1EG6+yfow00M?= =?us-ascii?Q?wu8it0Y2PWG8gF1pbFBdDyGb3C+Ec7SufAc4nzONWY2S/oNJBHLfRiA0V/Sm?= =?us-ascii?Q?xoYLKpH8RbbQVvCjiurYU1HKq4TsdMLcMO7fhz2Iyp0dS8DOdERTnwG7Ujjt?= =?us-ascii?Q?xLD75M/n2/0McILxAPaY2i4P0EFuXKhyreL7dUUoRZJpuIP/jTMJhmTm24HV?= =?us-ascii?Q?w7xze/+ZwHTnOescLdTO+nNZJ87lv+BFKwnIbL5h4weMhSTCDe0pu1PRvajY?= =?us-ascii?Q?TP3KD5WJP0DqbijPQayhOvEjb36LYYr236h1p8BvLU1g5byG+vCI+z48swQQ?= =?us-ascii?Q?Je/5N+CjWAljRLym85DVKwOejOfpXWrDakFcdSNi5ct7gEOj0qNgwmR9Ua9c?= =?us-ascii?Q?umaW5m1I+dECdb/W972ojUqim0q2/azETFQPopE7RsaLOWtqRZeNFh6XmbtV?= =?us-ascii?Q?3AEGn8YKK9Hdc1xnOVo4eL4Y5KSUGkT0qw1Rl3B8vFtA6AvHErLSTl3dxhfc?= =?us-ascii?Q?tAwg9cPU85xY+XTKJ2tRri3FhC4VJ1MtO1Yu+qpiNRFfoy7HdXHfHyQGzQOD?= =?us-ascii?Q?V2s/U+mkiEZcKcX2KV/ndTJy/FEx3H/cuBAYLj9ukW0wHcwutKEhW/E/L2aO?= =?us-ascii?Q?urXR7ykXUkNCNeXMMh4D9FxIo5qwPfcbYXbsirShHgnsgetXoTse4RPOURHx?= =?us-ascii?Q?/KRrl6pvg1El6R3bCUUDfDT/yHpKeB653S0J0PkAJG/OyGgAENW6Gm7r7fbG?= =?us-ascii?Q?opLjbKyrnCU8aWQfqd+yOW5YFBGaPly0lWYCSWP3OI4/l/iZZtZg68TzAw/o?= =?us-ascii?Q?BLWOevsEwZmyxYcXuOlQw/XwkUUVOvSeZ5c8b//2n4HEtEVYUyEWr4maA410?= =?us-ascii?Q?roSjpfyQzRBfaCcu4wjE0yRUGopkfElRj8QbCunMnPx3CFJYN0awupniJ2vd?= =?us-ascii?Q?YtMvw06kF31jNy4C+Jgf8ji2GFA+oMu4nbXKdUCrpcyvSwow6VMPV+gJyOZS?= =?us-ascii?Q?Y2V5KOP3ZbY+9x5lJdljLDpvTQ6BrhMajG/iSV9mQaqw/WMKBUC5woSjuFxm?= =?us-ascii?Q?g5HY7Zc7qBAkRHSOMayeXXMufpHwtf5TYZH2vltw3ylQdRuYhUaV3uAX8N0+?= =?us-ascii?Q?EKRXMp3pRH41mwaG9fdK/hWqxpfZrLgEUWK0bhe9sVI6qq6TRk0UuHqSD8b5?= =?us-ascii?Q?cfnAcY0rmbygR/Wjpol5Mx8DjKwIcvczZ4aMU+od6kgswlf38rVx6a8w8A24?= =?us-ascii?Q?5Wl3wEFwrXv1BABgKJDWKe9pII8QUBJ90sLokitMAMBym646769PU9bR4QOl?= =?us-ascii?Q?B3f1hRpNmJOxTOYyWHnOZfxM+ZotY/jDGUQ/D3hZTdq8OtTRxJfw5iuD+SBv?= =?us-ascii?Q?cHVLH0Wfu44a/1iTxThnousw5QSJ3XVTlh8NwWtrEkG+3jkmuqo2vFistWUq?= =?us-ascii?Q?V8FDLauuvw8d9HeCZM0icHMhin9CEnblHyN3o1C/KX/wBWev5Do7aGHkbK6q?= =?us-ascii?Q?LLbfEmO9NM5qh74rmneGJxw=3D?= x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AS8PR04MB9176.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(19092799006)(1800799024)(366016)(7416014)(376014)(38070700021);DIR:OUT;SFP:1101; x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: =?us-ascii?Q?X0khiNXyubN8+63zc+CeTp61CvVbrjsHUYVK7sWte4PfcgxvVvZT72AbPF2q?= =?us-ascii?Q?OIYD2g77CPMcfJ02vj3/v3x3hKWkjk8ZgR3+GaZQ6+cIzQG9y3g1smb1tnKl?= =?us-ascii?Q?fdopUEiubZ0hUra2yE98cKinauXtzqqECQd3ucbig8yWksMEX4Hz/niUlFVo?= =?us-ascii?Q?g9gs9DmE+/4kDTNTvllJJciyiWuSwpqBOtDcBre4m0lkqMxXWOUTym286nIJ?= =?us-ascii?Q?U35zIpeuz/PUU97pUbE+GPSiLEra5sOyoRo3pR/tvAB3WT9JOxMhkDMqKiyX?= =?us-ascii?Q?dJl4veRcnOISDcFjV15Km5sObh0930gYoKpLSDCW8P4ISEtmS+HBljVLWMha?= =?us-ascii?Q?W5eokVOVA6zvn3MtzdkorQci8fcN8+SO/uVPTXqY9qw+d9ksDkjilI/v1y9K?= =?us-ascii?Q?f/X9h1UDdNcAZczvFM/pZ8nl+ouURxP5b+vKmYnP4U3zvn7iviFfKtqyK96a?= =?us-ascii?Q?9z65CBuXLBgD5utXjU9ggevXh3ZJ+HMsulMy/T0J5clqlzMeRTdzrXHICz6S?= =?us-ascii?Q?0+Y8sTLkdlUKm0daB5iIljHz0WwAc8dvuF9rJPBz1P3M5o/eoMFXM9CUH4A6?= =?us-ascii?Q?60bvD5G8B7GgjHuvzJkPxciF7fqPCTBWPWxCcZ2QV6oM8mCKfNWAvWaNFqhZ?= =?us-ascii?Q?rK3rJp3uxtkv9V66BIdQ9EJUrC4nhwpK9guJqWz9RZ0yBQfrBPNLk/atxzTD?= =?us-ascii?Q?pttrTwu8ZB54K8DVtWcJrHV/otsES8CG+GXB6JitYZFQ5jdu3Pg6J59JllEu?= =?us-ascii?Q?qDH8+YljfLwYU5LZG3i375B55IjQaXH8UrTDriqfqQcn0GJue0ONYeeVLFuY?= =?us-ascii?Q?2qX7VtqnBilaurImgikNP919rnYoMxyo0O8t2A2fWJsBEOQd7CKaxkaotq/+?= =?us-ascii?Q?9lRQNn1s/bqhfa80rcOedQyIiRGBw1PYvmy8ORFnRPY5SDRIeV0WoHM0kqUO?= =?us-ascii?Q?QBDanTL68pncjzgov3Y5BAYFoYnRv5s5quaVbmOWOMn586TnRhiJ6aLVR8NZ?= =?us-ascii?Q?ZbloMsQ6Ag9484y9SlmoDUe/S5qqfjko0LFnFlLSlDO/f0m4z/1lPFbNNbcG?= =?us-ascii?Q?FaWu9Ze55IYhs7AAEgeS+w//e/puAadCnfgkUipPnahRYfCFalCb510BKPEf?= =?us-ascii?Q?2z9UG0xLvyKHxbln3hf76/1dCfrvgwQrwCFL+G0+Cxi4yJYpalDHk6Iz/1yC?= =?us-ascii?Q?1vFbxHMa+Gk0QRpVHteBx+ZX6QKsXQ6aZV4N1Su7Rr2rHWl4iSgBAEhlvoau?= =?us-ascii?Q?dh10gJ7sSFCtM4e0nJUMToZfwXbvRJgWwj5rl34edufcGDe+mDpiRj633vo4?= =?us-ascii?Q?a9QTA5uUS0d/N7cT/XxWglE/5SKu9uVW6ARZkA+PTjnLRK3B5gfKHd1KdD8n?= =?us-ascii?Q?SJMNgZQKTUvHqEi2mxksqA6LlVvXftKYi/znkEG0ApQuLOMYCUJuw0Ae1eCI?= =?us-ascii?Q?gJUBjnp1c6rPDn1dqK+0e5bSMiXtMi1Ukj7O2z5EGfd9FVbXmx2s+wDDoHwW?= =?us-ascii?Q?M8P/E6K99dYYy5uLP9pSahfcr4OKtievwVV2aJzfuk/22pegQhxRxjiCZSDu?= =?us-ascii?Q?kXhdExCubeolx4EYPM+fWu6N1J/z3qiesHayTr7/coEtg5NyTqvxey44ZxvI?= =?us-ascii?Q?WTRMRU/HbGyrvMweOLk70b34IFFWHnB6daqE+IKk+i9usQQNvEcGahQ0gmHm?= =?us-ascii?Q?jbYax7tquri2brLUC9tTf3Nu+zaP1GDj9fNbXVsV45jqIY45?= Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: AS8PR04MB9176.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: cbf9f278-2f79-4770-bbc4-08de6ffb9119 X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Feb 2026 21:12:19.4509 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: xp1AWEP4zbKso5Mswxn1gEL8VBpgUN9CiAStnRS8lakDC2HUUKHpH2rHdC88L/Ao4LOE31jk+AbVTx2lzSJCxA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS5PR04MB10059 > -----Original Message----- > From: Andrew Lunn > Sent: Thursday, February 19, 2026 2:51 PM > To: Shenwei Wang > Cc: Arnaud POULIQUEN ; Linus Walleij > ; Bartosz Golaszewski ; Jonathan Corb= et > ; Rob Herring ; Krzysztof Kozlowski > ; Conor Dooley ; Bjorn Andersson > ; Mathieu Poirier ; Fra= nk Li > ; Sascha Hauer ; Shuah Khan > ; linux-gpio@vger.kernel.org; linux- > doc@vger.kernel.org; linux-kernel@vger.kernel.org; Pengutronix Kernel Tea= m > ; Fabio Estevam ; Peng Fan > ; devicetree@vger.kernel.org; linux- > remoteproc@vger.kernel.org; imx@lists.linux.dev; linux-arm- > kernel@lists.infradead.org; dl-linux-imx ; Bartosz > Golaszewski > Subject: [EXT] Re: [PATCH v8 3/4] gpio: rpmsg: add generic rpmsg GPIO dri= ver > > > Any reason to use __packed and alignement here? > > > This structure will be copied in a vring buffer right? > > > > > > > Using __packed together with an explicit alignment is a common pattern > > for defining communication packets. The goal is to ensure a stable and > > predictable layout across different architectures and compilers. >=20 > Being mostly a netdev person, i can say that the network Maintainers actu= ally > refuses patches with __packed. If you have designed your protocol correct= ly, > defined your structure correctly, you should not need them. >=20 The fact is that there are many __packed usages just under the Ethernet dir= ectory. $ grep -rn __packed drivers/net/ethernet | wc -l 553 Regards, Shenwei > We do however accept things like >=20 > BUILD_BUG_ON(sizeof(strcut foo) !=3D 8); >=20 > just to make sure the compile is doing what you expect. >=20 > Andrew