From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18FEAC433E9 for ; Sun, 3 Jan 2021 20:58:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E1329207FB for ; Sun, 3 Jan 2021 20:58:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727352AbhACU6F (ORCPT ); Sun, 3 Jan 2021 15:58:05 -0500 Received: from mail-dm6nam12on2083.outbound.protection.outlook.com ([40.107.243.83]:45793 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725840AbhACU6E (ORCPT ); Sun, 3 Jan 2021 15:58:04 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=PSYqBe9eFiKGqNld40wk5dLAg9iTL9X9nF57YBvMhTpdegbQ2P4rNue+ogXygNoavldWIFP25jEjnDcwUKj7MN4Ox9IDJzt9MGX3uCMzoVSdmnkFvatZVXDBmPuWjf8DgE+6qGqX1RaqRyjQ90M2AXZXgMpCWDnElr+MVNSTwsLG8LY7J41IzjYcwRMUtS3US+hm+7zFgzE3L70ArPViLH1To0QdwxZ/5wR5kNOSjNFKzUEtHoQ08VAj+ab3famVReGInZvbHwOuDrnw7ik/9RpHsaUUw7nFCH3Q91LCmv+vegSgVvvzn1GyYpPVBy4xyWc7cGV+dX8jznqRoFvsNA== 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-SenderADCheck; bh=qNLyszE8AvaxnP3YZjiI/P9AVnIXr3o/3i8UGPpU3+w=; b=TYhkx8K3ahuw8jkB2MqGhOaixi0+pBI9f0qCM31wPYpfFt+HW5lWOaYoTOOjkHl5R1Ps6V+SJw3K75zSAwVlue4g+kKLbW12OCTKXI7/274C045MG9nIM+3Z7emYckejqTBznDPQaJCUASOoZe+FIxQTwsNsXPvk3WloBzmi5mXkeGlyY/c91aOEXzkkoFRT3/uW5ttbJUcXnH251CujtoyMkE66XNyAUS/6fN5Ok3kCaMTbNgefqZmYauHGTof1ZaoqHv9hFTgpzxv3J/zsSMWVpH85ZjW0Q+SizCDimhPzbfBbb13GA90ZXiGaZQI1u3OaXETnhmCFosiFwzRS6A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=labundy.com; dmarc=pass action=none header.from=labundy.com; dkim=pass header.d=labundy.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=NETORG5796793.onmicrosoft.com; s=selector1-NETORG5796793-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qNLyszE8AvaxnP3YZjiI/P9AVnIXr3o/3i8UGPpU3+w=; b=x3U12dH9cXbVOA2TnHDMZiwHBmHcwOin6Zrnvkwkd79g6xdjcWC4IpflTbAfwVjj/9/rjRiiTpYHL9ARRtPrR9lf7eJkIGrmXXEhtKc9g9EI3exP1UNCsX1+q1H/xuIQXxrUqnC3hRpcYP6afZdXs7kl08B4/GLR8Jgzm1oFiiI= Authentication-Results: linaro.org; dkim=none (message not signed) header.d=none;linaro.org; dmarc=none action=none header.from=labundy.com; Received: from SN6PR08MB5517.namprd08.prod.outlook.com (2603:10b6:805:fb::32) by SA1PR08MB7152.namprd08.prod.outlook.com (2603:10b6:806:189::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3721.24; Sun, 3 Jan 2021 20:56:46 +0000 Received: from SN6PR08MB5517.namprd08.prod.outlook.com ([fe80::b568:46ab:17f2:c918]) by SN6PR08MB5517.namprd08.prod.outlook.com ([fe80::b568:46ab:17f2:c918%3]) with mapi id 15.20.3721.024; Sun, 3 Jan 2021 20:56:46 +0000 From: Jeff LaBundy To: lee.jones@linaro.org Cc: linux-kernel@vger.kernel.org, Jeff LaBundy Subject: [PATCH 4/6] mfd: iqs62x: Increase interrupt handler return delay Date: Sun, 3 Jan 2021 14:56:07 -0600 Message-Id: <1609707369-11297-5-git-send-email-jeff@labundy.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1609707369-11297-1-git-send-email-jeff@labundy.com> References: <1609707369-11297-1-git-send-email-jeff@labundy.com> Content-Type: text/plain X-Originating-IP: [136.49.173.128] X-ClientProxiedBy: DS7PR03CA0263.namprd03.prod.outlook.com (2603:10b6:5:3b3::28) To SN6PR08MB5517.namprd08.prod.outlook.com (2603:10b6:805:fb::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (136.49.173.128) by DS7PR03CA0263.namprd03.prod.outlook.com (2603:10b6:5:3b3::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3721.20 via Frontend Transport; Sun, 3 Jan 2021 20:56:45 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7f97d342-5027-4b2e-6121-08d8b02a1515 X-MS-TrafficTypeDiagnostic: SA1PR08MB7152: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4714; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: lZ9A80KPM0+QBsx28o6dAnYB9l4HKifEn8yqn0HOBa7pA9lTK19xLZ1uY7gbbNHGb5zSBbcSJehj1sEFFmMfUgnjOKXIgVBk93ve2dZ93vHjN8dprRv8FAZ7TVPuRlkB9TsrmfDmKPW7/Tcuso3uUvnZhryHgJ2hNrJGI1MkgbFY+ZPbylVKPT48MkC5wT5+i06IE43dfD5IOP/bLF3Z70TKmO0DDstQp6gt661cJqT1mSzv7NvurfJX2YwyAcg5aJtixSiDYhDVkogeiOr8q2TQwkWsQUakj3DWNYciSt/wnRTYugW2xFeP5YhxdZ+rbBM2OZjoBJiO3L5a/segQwsmMrDnnzVZRBcPUSSXYGtAm5IoMdqUA2FHxJxlZv9otN7BfMnxroNo9OyByVd3Dunpx5bH6cMVA+RVAeAnSHpDkCovcFHd6Mv9FNGlpCxlTC4cBNSd3GmApiQKC0OFLw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR08MB5517.namprd08.prod.outlook.com;PTR:;CAT:NONE;SFS:(39830400003)(396003)(376002)(136003)(346002)(366004)(6666004)(107886003)(6506007)(86362001)(6916009)(8676002)(26005)(2906002)(316002)(69590400011)(186003)(16526019)(6486002)(66476007)(66556008)(6512007)(4326008)(52116002)(66946007)(83380400001)(478600001)(36756003)(4744005)(2616005)(956004)(5660300002)(8936002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?N2UQNpEYUATttKvwa6T+rI6jHaGLR/5bVz/GbyUDn7pHCF+RZJLkV2Jy8Wvg?= =?us-ascii?Q?JrKq7+eWT5S5uPCiaky7EKn1obRBUXDiT6wMhdy8z/kot/oCZeWFBBdou+t6?= =?us-ascii?Q?5/lmWQxU1knrqPHRqcd8KpSnOnDm4rLSjUXjczUEuuvKDYjZjvQipoCJiHfC?= =?us-ascii?Q?2rnmcb6I3UGuCXfwUcgdefcAvCne7JkCZFCbsbZy2fiEhMhldAkAvZ9XvClg?= =?us-ascii?Q?FvWpHlCcThM68ORG0tKatoLE3O99SxplgABMNlm3DjiLXhs3xfCeHyg9meEZ?= =?us-ascii?Q?T8ZarEmoA1D0+1S0tyykiVShVkFSlswLoX9vqobPMQ6m+kUFInUTZDp9UTxh?= =?us-ascii?Q?bp1BKpZqN095IK4LNv25zFYE1+V8pYyqXNONJPINU14cZ1CIPlXKB/BOqFOw?= =?us-ascii?Q?pAszdxJunyfCmcGamtjpBysa3b+viq/5f875kis4g+H3yHZB5pjAwkDpBqGa?= =?us-ascii?Q?cCCeVZBeVYL0jSULn3zCTqcEFpJvP+BLJx22yNGeOt15hkryyCH4GBR+/HKh?= =?us-ascii?Q?UpMRyCkODrxYPXSBXZahehnr0tyxB8Bf4Vj8ltQENlcQLt1vnTBsRyb1sCyN?= =?us-ascii?Q?kd2rv7j3yDrbN/XhzmXrWOqoSaJcXE/1AeuXcqhkdRVHVH53lBWhVblrcEpU?= =?us-ascii?Q?XisKHn4W6k2zUTG2wVCDhLqhiunBXzG00DtNtg87F3kdNQpRlLE/4XTra0pL?= =?us-ascii?Q?gvyqB9oZY19OsbzixLJZx5dCh5oXGHHZ6AvPFvYlUSREacwjjw52YfkvIIBf?= =?us-ascii?Q?wnU1UcKI4WB1drVEkg7qLNXMQsU1I2Go61WXIiUwkvPOC4HYK6Vrnigoj5Ow?= =?us-ascii?Q?N2UXvstnm754oJonGPklVpKi/QOl1ip7K4gp6f9ZKRsrGq1y0/i5lUM+T9ry?= =?us-ascii?Q?l63/OXDxkexxdr7yU7x7rQh5IipAWgpRCed2jAyUnlUuIOMqn/j2H/ajKLuw?= =?us-ascii?Q?YFIByuG81fFfLaBeaU25lxwQ6llUUDHuzTZncgnp1Df3eEQpx/foNDSOyf0r?= =?us-ascii?Q?n9gh?= X-OriginatorOrg: labundy.com X-MS-Exchange-CrossTenant-AuthSource: SN6PR08MB5517.namprd08.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Jan 2021 20:56:46.0463 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 00b69d09-acab-4585-aca7-8fb7c6323e6f X-MS-Exchange-CrossTenant-Network-Message-Id: 7f97d342-5027-4b2e-6121-08d8b02a1515 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 0sK3kkjozZXQUwxDpgBIZkQ0hswCT+rIoV8iJG/pTr/V6dQ8xY6y6pLeewvS1dWtm91M2L+veGp0Hlad1j/QMg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR08MB7152 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The time the device takes to deassert its RDY output following an I2C stop condition scales with the core clock frequency. To prevent level-triggered interrupts from being reasserted after the interrupt handler returns, increase the time before returning to account for the worst-case delay (~90 us) plus margin. Signed-off-by: Jeff LaBundy --- drivers/mfd/iqs62x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mfd/iqs62x.c b/drivers/mfd/iqs62x.c index 7a1ff7c..07c9725 100644 --- a/drivers/mfd/iqs62x.c +++ b/drivers/mfd/iqs62x.c @@ -533,7 +533,7 @@ static irqreturn_t iqs62x_irq(int irq, void *context) * ensure the device's RDY output has been deasserted by the time the * interrupt handler returns. */ - usleep_range(50, 100); + usleep_range(150, 200); return IRQ_HANDLED; } -- 2.7.4