From nobody Fri Jan 2 04:16:16 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68350CDB465 for ; Mon, 16 Oct 2023 15:33:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233755AbjJPPdE (ORCPT ); Mon, 16 Oct 2023 11:33:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56604 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233643AbjJPPc4 (ORCPT ); Mon, 16 Oct 2023 11:32:56 -0400 Received: from EUR03-DBA-obe.outbound.protection.outlook.com (mail-dbaeur03on2078.outbound.protection.outlook.com [40.107.104.78]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 89997E6 for ; Mon, 16 Oct 2023 08:32:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=RBBxVUMQcPDWdqR3rhatFPJo32IP2xUTo+VKeqBERk019x75VsuAMvbOxI49k2IMJXA43YLbk+tnNxCG7rbMkKteCpQs7Fd3HI05R8MtzaQ+pFiCMY7iN6Z9Ub6FTXgZbA2nt/x4DuDYLZ0lD7cbfxjgWyb2GcErRTTekWeA5ObsHYgTWV5dszwH9w/keWni7h9xRG3waQW6BVP0ODRk14XdXNPm4r8skVq9eizLkhwFqd+dao3wzTl2bgHOCU4UeIH7JLShGdMDyuOiyxudXxu/Ihc2pqEqKR9Mxh1G9rl6cNRRIDeJdMLvlXyLk9tnIQWhY5sO6L8F6Y6qmYjLfQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; 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=+nlpPOSgD82lCFohI2OxZVAzkZFLmByfJ5q7/Un/BtU=; b=jYYc0yN/fggC1AM3E8EBeGYa5w0uMjMks63rvv/OOQ78ZQl2OSudoPyFr5QG+cgpCnG39ZQmPZLSnbUKUq9ZpYXFUHlwgyLph6xpCeJipYnTJkBNf9fT2dgSPDEppAbxLZmBQUgeP7zPY2xqDxTPP2pB4xlOyh/ddOXus+9IYXHs4xt8HMd49uGlus7/bE6w/7BqDSmuVbwVHtJQUKjOHT0CjrQKnd7UD2JhuFc9DF/R8AETkoy00ws+0fxG29PQ7Stpnx6Vjd11fqHrAJt6SDT8Qc+QvygHqwD1nb//tFBco7HgpachLWUvTG7o4VYJk2/pryTRXSR/0rYgwO1iJQ== 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=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=+nlpPOSgD82lCFohI2OxZVAzkZFLmByfJ5q7/Un/BtU=; b=QVgiMOnZ6e31r5UB8NQNNvxRd59Mw737pHPAFE3sD8ExIMJlYvrH0N0/OdbnOOixXXY/690iPSNsDBCMmGfkA5umxybyq9M5wAELCRNNof7ypLmFzHkCMUWb37StIdFWlKaYppr+z5oNPXniV6bxlspo70VGanO5m6FveNEnquI= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by AS8PR04MB7592.eurprd04.prod.outlook.com (2603:10a6:20b:23f::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6886.36; Mon, 16 Oct 2023 15:32:52 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::1774:e25f:f99:aca2]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::1774:e25f:f99:aca2%4]) with mapi id 15.20.6886.034; Mon, 16 Oct 2023 15:32:52 +0000 From: Frank Li To: miquel.raynal@bootlin.com, conor.culhane@silvaco.com, alexandre.belloni@bootlin.com, joe@perches.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev Subject: [PATCH 3/6] i3c: master: svc: fix ibi may not return mandatory data byte Date: Mon, 16 Oct 2023 11:32:29 -0400 Message-Id: <20231016153232.2851095-4-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231016153232.2851095-1-Frank.Li@nxp.com> References: <20231016153232.2851095-1-Frank.Li@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: SJ0P220CA0029.NAMP220.PROD.OUTLOOK.COM (2603:10b6:a03:41b::13) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|AS8PR04MB7592:EE_ X-MS-Office365-Filtering-Correlation-Id: 228fb6ec-eb36-4ae8-85e1-08dbce5d295b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM6PR04MB4838.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(346002)(136003)(376002)(366004)(39860400002)(396003)(230922051799003)(451199024)(64100799003)(1800799009)(186009)(6486002)(38350700005)(36756003)(38100700002)(83380400001)(6666004)(6512007)(26005)(6506007)(316002)(66946007)(66556008)(66476007)(478600001)(1076003)(2616005)(52116002)(2906002)(41300700001)(86362001)(5660300002)(8936002)(8676002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?IoBqb4FNPokrL02kKzDsKh0FN2+tQuLyUOPGzgEtYslwTLUdJ2I2mvRkzfct?= =?us-ascii?Q?UnsVX2jeEiViDKjY7ttXGPaLlr9A8LgSYIdnEJKtTgMuzXsuRr4PZX4v9Kcg?= =?us-ascii?Q?BAp/foqajeWElzOBPq34eNaRsRuUFZTYlNSR73QoRnOgkGIw0ruSZjc0uFt9?= =?us-ascii?Q?6Rc3/VztkYZdKF/7ie2ySBM7xTbOmyllIhclZF6uUkpf9zw6tNo3X2SiUsY8?= =?us-ascii?Q?TPHKpX2nAEG3wS4YeYMSj9yDsgJLMV3Xphs9Gc4Zh4B/L7Wo2ZuQ58swDCSO?= =?us-ascii?Q?w60nF1iw0I+2ycqw1d7uZW+NnLF83oUpdEEww88uh/FpWiaMiIFscjiQ5O43?= =?us-ascii?Q?x+U0mcplVplUxWW2qOgbFhvNlZKWG9T78QaGvVUkvR9tBMsq1wzIroQLVjAw?= =?us-ascii?Q?1v5rXExt5Q68gTNxekBdrYIhw/0LnEAtnthlY39JX4L0UE0ldfG8CKTLGEId?= =?us-ascii?Q?xMG6T7Fqe9s2lN7nCcbyHIgqjqmUEotv8QQZSvaroUNUKfXrEBbdQEt9DLWH?= =?us-ascii?Q?44boC3YFakrXyb+MGvohu6HBEjumpa+2VsnVPZCkzoRyiakd8Nu2TOc72/lT?= =?us-ascii?Q?pZrbIwHUli2P2DLmfKy2OOd39rqGZmTT5l7VNoLkD656wohOFmJUCU5L2Nr2?= =?us-ascii?Q?FOi42weOMyVlAGSSzbl4ok20AH5WIX6F40wNm24RaK480J0DcjPSS5oMdUDn?= =?us-ascii?Q?Wra8XhAr9XrIBj074AmqmamD1TlGVx0gHoD5iBOJl90FM03ByOFaYxGDuH1L?= =?us-ascii?Q?YXXYUsE1kyAYRBcYVDKnDwBhc6f8Lc5M5ujBqAfhfG9JixbrNuZufUtFWSTr?= =?us-ascii?Q?ix2fkJwOLQgBgMt9nzqU8nEkopjaYTrIYRqjsSWUPLNi0oaPSol/EIfNPD0m?= =?us-ascii?Q?q82+1gJFiWFJriYR2+g55fkGj6q++DTgc3X1VdqugGYXN+UDEFsWBwkMNcfP?= =?us-ascii?Q?6XckpfnGXtWnkN0faxRvDKLAFBElF3qAPXAExQgSdr2OLDCc//F1/cy8Xnfv?= =?us-ascii?Q?ulkZg3NXsu0lmtii+lUYXKeRnvPOY8ibyBGfPtK8oGBUK3/DoNQVse4VhSH1?= =?us-ascii?Q?pwLfIwaPT7g3bHJsSUaLGmH7q9E4RnI4lqkvv/Cavq9QTlPKne5Qsi+thE4E?= =?us-ascii?Q?y9UMpxXW7eD/OId+iqJ5a3CEIrvXEsOwTc2Dl5GlQdyiGYWnUaYFr9eAbDZT?= =?us-ascii?Q?pIe6nfD0ur+H+rRsQXL6fBWpOwa+v8QKMfhU31nBn8OjabMkw7bmLHlXVRcT?= =?us-ascii?Q?PkOXUbFEAhTUyeZc5jnTUZB7dnOTrs8f1CoX55P7dlX4qjp6gHOs0VQYn5J9?= =?us-ascii?Q?1nJkrUvTa/vpoPmaGM2WsYaeNMUh8Ries0lVyYiqntvyvBhg0KrE+wHQu/uX?= =?us-ascii?Q?XwMga5SSBpoxgmvIVS9oRIiD5S/CWSqoIxNeWkVABWRbLul8iPYp4vLxppnR?= =?us-ascii?Q?GXqsSRwmuTLUw6+kQpzuVUr/LhBPReSfZriA3bcce8pJS0MwuIuLpAQPTNO3?= =?us-ascii?Q?Qxp36vIuh4Zf0kyM/FsykEE1aggt1HBiQVRskrCfqHVC+3u67HsoUtIey9Wm?= =?us-ascii?Q?te5NrHaxIa6Mxd5/0y8=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 228fb6ec-eb36-4ae8-85e1-08dbce5d295b X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB4838.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Oct 2023 15:32:52.5814 (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: s8TH6LOoBvCXB3j3NM3BetkRqfwiIOaRbtjPpHw3s4Jy+SI1PqPDcN0o33A8+Jk6JvnF9NFGvckCHXGJfkIEEg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB7592 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" MSTATUS[RXPEND] is only updated after the data transfer cycle started. This creates an issue when the I3C clock is slow, and the CPU is running fast enough that MSTATUS[RXPEND] may not be updated when the code reach checking point. As a result, mandatory data are being missed. Add a wait for MSTATUS[COMPLETE] to ensure that all mandatory data already in FIFO. Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver") Cc: stable@vger.kernel.org Signed-off-by: Frank Li --- drivers/i3c/master/svc-i3c-master.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i= 3c-master.c index 0f57a5f75e39..c252446b2bc5 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -331,6 +331,7 @@ static int svc_i3c_master_handle_ibi(struct svc_i3c_mas= ter *master, struct i3c_ibi_slot *slot; unsigned int count; u32 mdatactrl; + int ret, val; u8 *buf; =20 slot =3D i3c_generic_ibi_get_free_slot(data->ibi_pool); @@ -340,6 +341,13 @@ static int svc_i3c_master_handle_ibi(struct svc_i3c_ma= ster *master, slot->len =3D 0; buf =3D slot->data; =20 + ret =3D readl_relaxed_poll_timeout(master->regs + SVC_I3C_MSTATUS, val, + SVC_I3C_MSTATUS_COMPLETE(val), 0, 1000); + if (ret) { + dev_err(master->dev, "Timeout when polling for COMPLETE\n"); + return ret; + } + while (SVC_I3C_MSTATUS_RXPEND(readl(master->regs + SVC_I3C_MSTATUS)) && slot->len < SVC_I3C_FIFO_SIZE) { mdatactrl =3D readl(master->regs + SVC_I3C_MDATACTRL); --=20 2.34.1