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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C18FC28B2B for ; Fri, 19 Aug 2022 18:00:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349938AbiHSSAO (ORCPT ); Fri, 19 Aug 2022 14:00:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349988AbiHSR7h (ORCPT ); Fri, 19 Aug 2022 13:59:37 -0400 Received: from NAM10-BN7-obe.outbound.protection.outlook.com (mail-bn7nam10on2057.outbound.protection.outlook.com [40.107.92.57]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 143964F646 for ; Fri, 19 Aug 2022 10:46:25 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Y6aeMgkHNhNqq/Y5zzx9aPsjUL97QjKYr9zuXBGecvJhjv9+mK0CgR9yLzNxKqKk9jqVOgoJWm4P2e2kApKQcef03dhSUlJ4XFA9iedL7+P9ffuEykvgHuM5q5UGKEXQkBsKKh8z+j/Vlq557nKY99/ADGfOeBvAlhOJiCOEIaueOw3padXwGnbRtJMKxtQH/HJF4nFOPIhjzxjwWqigdyV6YvHr+5atWqiec+dsLCpU0munzmk1wqIJMYy9McbKJoE1546Tb7sqwmVI3qgc1BktwwXRWSAIvKQfyrdscnrDjX9B6veTdjJX7rHPc5wBhUzpeGGZmmKcqPB6Z6Ixzg== 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=1F+vJtTWH1BF9zjQtDLmVgeYYIsGve6VdfnuhhFKMDM=; b=DCZMtWeCtPiCHOtRYh9XQKhnVMcXW+xdUX8SBTtW5pXjHV4lzPuCLGrM6dS1U7k8BYAtLk5zD9nQnUuxcdR48QilJb3uzPnH3TZswlQPxBwE8fqR6OMzzduEtUqTWAftpR1copjgH5o01P5nqG11nMA5hBPEfFQpFEHX0h2yLFry7e487qNc3hA/e5FZ7TgaBlAk+vcWPjmJNqN+wcC+ahrh0447WEkb+etQJpgwAq1iuwsSiciwb8IzG8MZmoPdyj630BZ5HSkc+0Dx8pO8OZNrqVcLpRJUsLBfRhV33bC4/J9oaot4faWURhG8MwqE/056vnFFhEBKK/XmQQW3kg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=redhat.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=1F+vJtTWH1BF9zjQtDLmVgeYYIsGve6VdfnuhhFKMDM=; b=hqR6iv/ep8ownyKHAh9uRVFWxWOGbjD/9qUbdn9Um5gSsyavdoqq8mABNSE9VaGX/1yTDCjHkMTeGwT9Hqmg9QToX052vI8TblVd/Wx4y8bBK9VMTxfiWqMDx8WVCSxP0TPbTtcJUgBeh8XWr5ExcvCpx2txVvs2gFE+2lMymnI= Received: from DS7PR06CA0023.namprd06.prod.outlook.com (2603:10b6:8:2a::14) by BYAPR12MB3639.namprd12.prod.outlook.com (2603:10b6:a03:db::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5546.16; Fri, 19 Aug 2022 17:46:22 +0000 Received: from DM6NAM11FT081.eop-nam11.prod.protection.outlook.com (2603:10b6:8:2a:cafe::34) by DS7PR06CA0023.outlook.office365.com (2603:10b6:8:2a::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5546.19 via Frontend Transport; Fri, 19 Aug 2022 17:46:22 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DM6NAM11FT081.mail.protection.outlook.com (10.13.172.136) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5546.7 via Frontend Transport; Fri, 19 Aug 2022 17:46:22 +0000 Received: from jatayu.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Fri, 19 Aug 2022 12:46:19 -0500 From: Shyam Sundar S K To: , CC: , , "Shyam Sundar S K" , Nathan Chancellor Subject: [PATCH] platform/x86/amd/pmf: Fix clang unused variable warning Date: Fri, 19 Aug 2022 23:15:58 +0530 Message-ID: <20220819174559.4029855-1-Shyam-sundar.S-k@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: a777e673-1909-4cd7-f927-08da820abacd X-MS-TrafficTypeDiagnostic: BYAPR12MB3639:EE_ 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:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230016)(4636009)(39860400002)(346002)(396003)(376002)(136003)(36840700001)(40470700004)(46966006)(2906002)(36756003)(4326008)(8676002)(478600001)(70586007)(70206006)(40480700001)(41300700001)(82310400005)(316002)(7696005)(6666004)(86362001)(26005)(110136005)(54906003)(356005)(1076003)(81166007)(2616005)(336012)(16526019)(40460700003)(83380400001)(186003)(82740400003)(8936002)(5660300002)(36860700001)(426003)(47076005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Aug 2022 17:46:22.0597 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a777e673-1909-4cd7-f927-08da820abacd X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT081.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB3639 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org variable 'mode' is used uninitialized whenever switch default is taken in sps.c which leads to the following clang warning. --- drivers/platform/x86/amd/pmf/sps.c:96:2: error: variable 'mode' is used uninitialized whenever switch default is taken [-Werror,-Wsometimes-uninitialized] default: ^~~~~~~ drivers/platform/x86/amd/pmf/sps.c:101:9: note: uninitialized use occurs here return mode; ^~~~ drivers/platform/x86/amd/pmf/sps.c:84:9: note: initialize the variable 'mode' to silence this warning u8 mode; ^ = '\0' 1 error generated. --- Fix it by returning -EOPNOTSUPP in default case and also change the return type of the function amd_pmf_get_pprof_modes() to keep it similar like other drivers which implement platform_profile. Fixes: 4c71ae414474 ("platform/x86/amd/pmf: Add support SPS PMF feature") Reported-by: Nathan Chancellor Signed-off-by: Shyam Sundar S K --- drivers/platform/x86/amd/pmf/pmf.h | 2 +- drivers/platform/x86/amd/pmf/sps.c | 11 +++++++---- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/platform/x86/amd/pmf/pmf.h b/drivers/platform/x86/amd/pmf/pmf.h index 7613ed2ef6e3..172610f93bd1 100644 --- a/drivers/platform/x86/amd/pmf/pmf.h +++ b/drivers/platform/x86/amd/pmf/pmf.h @@ -303,7 +303,7 @@ int amd_pmf_init_metrics_table(struct amd_pmf_dev *dev); int amd_pmf_get_power_source(void); /* SPS Layer */ -u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf); +int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf); void amd_pmf_update_slider(struct amd_pmf_dev *dev, bool op, int idx, struct amd_pmf_static_slider_granular *table); int amd_pmf_init_sps(struct amd_pmf_dev *dev); diff --git a/drivers/platform/x86/amd/pmf/sps.c b/drivers/platform/x86/amd/pmf/sps.c index 8923e29cc6ca..dba7e36962dc 100644 --- a/drivers/platform/x86/amd/pmf/sps.c +++ b/drivers/platform/x86/amd/pmf/sps.c @@ -79,9 +79,9 @@ static int amd_pmf_profile_get(struct platform_profile_handler *pprof, return 0; } -u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) +int amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) { - u8 mode; + int mode; switch (pmf->current_profile) { case PLATFORM_PROFILE_PERFORMANCE: @@ -95,7 +95,7 @@ u8 amd_pmf_get_pprof_modes(struct amd_pmf_dev *pmf) break; default: dev_err(pmf->dev, "Unknown Platform Profile.\n"); - break; + return -EOPNOTSUPP; } return mode; @@ -105,10 +105,13 @@ static int amd_pmf_profile_set(struct platform_profile_handler *pprof, enum platform_profile_option profile) { struct amd_pmf_dev *pmf = container_of(pprof, struct amd_pmf_dev, pprof); - u8 mode; + int mode; pmf->current_profile = profile; mode = amd_pmf_get_pprof_modes(pmf); + if (mode < 0) + return mode; + amd_pmf_update_slider(pmf, SLIDER_OP_SET, mode, NULL); return 0; } -- 2.25.1