From patchwork Mon Mar 29 16:19:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Neeli X-Patchwork-Id: 12170465 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,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 690C8C433DB for ; Mon, 29 Mar 2021 16:21:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3E31561985 for ; Mon, 29 Mar 2021 16:21:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230397AbhC2QUu (ORCPT ); Mon, 29 Mar 2021 12:20:50 -0400 Received: from mail-bn8nam11on2051.outbound.protection.outlook.com ([40.107.236.51]:4128 "EHLO NAM11-BN8-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S230415AbhC2QUT (ORCPT ); Mon, 29 Mar 2021 12:20:19 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=asAZHbu1pv37Ix8X8e6cQQhDkweYNHih7pi/cSwEh5zeIJS41MuJU1dhjDzyxBfYYw7L5vu0WnD2Cu8RkYIoK6RgTx2R9l4JMexvEyWaIYEfacW0xVyPo+JlJikyZ9ndmsWeLu/7Xqu63ij33iyIryC1vMWC+gFQ3X9CD5soWY/JN++LXGLOnI+ujp2KjeAWArVSzgRMnkWOyuFfM02zXt7xTalOkQo0Arj/9PmK85lQWPXVdU4FFPopKSQ9QRIUvv+HaGWvI137pVONijUxHTi/qrPYn+h4PoBZVMLOaO9UsiIsQ7mOefWzPOF/sPnZTtCz6TQhGVCb1bP5Hd2k6Q== 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=8it9juZAXpUWUol4IqQ9nnZXcfgkro1GMaXOFeJGNxk=; b=eHlYP85Vpp1kShGXjvKXAYAKQ3olFxY3Z3vubMQ6y0LUJuyKntq54bKGKpuNRmupA9+N4l1yDzMKJXgE6iSQb9K5mjuCwdnwPP7NXkGLwQ/oSJaxwVuEBtaclIZ66CLAd62cXYaTjuBR2OasO8zKzFiypdLXx51EYP6lJMS+h3Ngh4NMmK3SUUHfuMbLtl02qL6kZzMiigtHb8UIz9JTpgnJ/vdAgzhqPJbbsJkwcd1kNfP7OnnjsplvtqKzHTWakvp9XtMW5hOaip2xoaK/uAF7lnEs7DAkOSwxS2KNWrFv3XCpS79Igp9a71taTYTluOUwIKGzSt+LvHWTDcjl7w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 149.199.62.198) smtp.rcpttodomain=roeck-us.net smtp.mailfrom=xilinx.com; dmarc=pass (p=none sp=none pct=100) action=none header.from=xilinx.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xilinx.onmicrosoft.com; s=selector2-xilinx-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8it9juZAXpUWUol4IqQ9nnZXcfgkro1GMaXOFeJGNxk=; b=ZjrTbM4Q65LHuORnZesePx6WB4HWIlhkM1W4MStGGCCql9AaDReDrDnVKIxiS5mMJOAJqizV8RXpfYOMHiyGwBcgmgmKWIQ1/FKLMZpabs2Ui8hLSk8Cw2XI+sBi1LeG2Q0gycm7c1NjG4+jqrkA7p8NXuAQIJv/0wuaZOPY4yA= Received: from CY4PR22CA0092.namprd22.prod.outlook.com (2603:10b6:903:ad::30) by BN8PR02MB6001.namprd02.prod.outlook.com (2603:10b6:408:b6::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3977.31; Mon, 29 Mar 2021 16:20:17 +0000 Received: from CY1NAM02FT019.eop-nam02.prod.protection.outlook.com (2603:10b6:903:ad:cafe::6b) by CY4PR22CA0092.outlook.office365.com (2603:10b6:903:ad::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3977.26 via Frontend Transport; Mon, 29 Mar 2021 16:20:17 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 149.199.62.198) smtp.mailfrom=xilinx.com; roeck-us.net; dkim=none (message not signed) header.d=none;roeck-us.net; dmarc=pass action=none header.from=xilinx.com; Received-SPF: Pass (protection.outlook.com: domain of xilinx.com designates 149.199.62.198 as permitted sender) receiver=protection.outlook.com; client-ip=149.199.62.198; helo=xsj-pvapexch02.xlnx.xilinx.com; Received: from xsj-pvapexch02.xlnx.xilinx.com (149.199.62.198) by CY1NAM02FT019.mail.protection.outlook.com (10.152.75.177) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.3977.25 via Frontend Transport; Mon, 29 Mar 2021 16:20:17 +0000 Received: from xsj-pvapexch02.xlnx.xilinx.com (172.19.86.41) by xsj-pvapexch02.xlnx.xilinx.com (172.19.86.41) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2106.2; Mon, 29 Mar 2021 09:19:57 -0700 Received: from smtp.xilinx.com (172.19.127.96) by xsj-pvapexch02.xlnx.xilinx.com (172.19.86.41) with Microsoft SMTP Server id 15.1.2106.2 via Frontend Transport; Mon, 29 Mar 2021 09:19:57 -0700 Envelope-to: git@xilinx.com, linux@roeck-us.net, wim@linux-watchdog.org, linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org Received: from [172.23.80.241] (port=50308 helo=xhdsneeli40x.xilinx.com) by smtp.xilinx.com with esmtp (Exim 4.90) (envelope-from ) id 1lQucO-0002qR-LT; Mon, 29 Mar 2021 09:19:57 -0700 From: Srinivas Neeli To: , , , CC: , , , , Srinivas Neeli Subject: [PATCH V2 4/5] watchdog: of_xilinx_wdt: Remove passing null pointer Date: Mon, 29 Mar 2021 21:49:38 +0530 Message-ID: <20210329161939.37680-5-srinivas.neeli@xilinx.com> X-Mailer: git-send-email 2.9.1 In-Reply-To: <20210329161939.37680-1-srinivas.neeli@xilinx.com> References: <20210329161939.37680-1-srinivas.neeli@xilinx.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: eb99ee30-e123-42f8-13c9-08d8f2ce8a5f X-MS-TrafficTypeDiagnostic: BN8PR02MB6001: X-Microsoft-Antispam-PRVS: X-Auto-Response-Suppress: DR, RN, NRN, OOF, AutoReply X-MS-Oob-TLC-OOBClassifiers: OLM:1332; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.199.62.198;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:xsj-pvapexch02.xlnx.xilinx.com;PTR:unknown-62-198.xilinx.com;CAT:NONE;SFS:(4636009)(36840700001)(46966006)(36906005)(498600001)(6666004)(8936002)(356005)(44832011)(110136005)(1076003)(54906003)(2906002)(107886003)(70586007)(83380400001)(36860700001)(8676002)(9786002)(5660300002)(36756003)(70206006)(7696005)(336012)(82310400003)(26005)(47076005)(6636002)(7636003)(186003)(4326008)(2616005)(426003)(102446001);DIR:OUT;SFP:1101; X-OriginatorOrg: xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Mar 2021 16:20:17.0977 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: eb99ee30-e123-42f8-13c9-08d8f2ce8a5f X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.62.198];Helo=[xsj-pvapexch02.xlnx.xilinx.com] X-MS-Exchange-CrossTenant-AuthSource: CY1NAM02FT019.eop-nam02.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR02MB6001 Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org clk is an optional property, if clock not defined, calling clk_prepare_enable() and devm_add_action_or_reset() are not useful. so calling these two apis only when clock is present. Addresses-Coverity:"FORWARD_NULL" Signed-off-by: Srinivas Neeli Reviewed-by: Guenter Roeck --- drivers/watchdog/of_xilinx_wdt.c | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c index 5f31fdea517a..afbff79cce42 100644 --- a/drivers/watchdog/of_xilinx_wdt.c +++ b/drivers/watchdog/of_xilinx_wdt.c @@ -211,6 +211,15 @@ static int xwdt_probe(struct platform_device *pdev) "The watchdog clock freq cannot be obtained\n"); } else { pfreq = clk_get_rate(xdev->clk); + rc = clk_prepare_enable(xdev->clk); + if (rc) { + dev_err(dev, "unable to enable clock\n"); + return rc; + } + rc = devm_add_action_or_reset(dev, xwdt_clk_disable_unprepare, + xdev->clk); + if (rc) + return rc; } /* @@ -224,16 +233,6 @@ static int xwdt_probe(struct platform_device *pdev) spin_lock_init(&xdev->spinlock); watchdog_set_drvdata(xilinx_wdt_wdd, xdev); - rc = clk_prepare_enable(xdev->clk); - if (rc) { - dev_err(dev, "unable to enable clock\n"); - return rc; - } - rc = devm_add_action_or_reset(dev, xwdt_clk_disable_unprepare, - xdev->clk); - if (rc) - return rc; - rc = xwdt_selftest(xdev); if (rc == XWT_TIMER_FAILED) { dev_err(dev, "SelfTest routine error\n");