From patchwork Fri Oct 15 06:48:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?546L5pOO?= X-Patchwork-Id: 12560157 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F2E3C433F5 for ; Fri, 15 Oct 2021 06:48:25 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0C42D61163 for ; Fri, 15 Oct 2021 06:48:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0C42D61163 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=vivo.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E02636ECDC; Fri, 15 Oct 2021 06:48:23 +0000 (UTC) Received: from APC01-HK2-obe.outbound.protection.outlook.com (mail-eopbgr1300098.outbound.protection.outlook.com [40.107.130.98]) by gabe.freedesktop.org (Postfix) with ESMTPS id BCE3B6ECDC for ; Fri, 15 Oct 2021 06:48:22 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q8Vp6GO6ql3okfO/GGwBEROMePJDlGLiOhg5R1iufpgTdUzxSa6Y281dvhUYh1S+ubwLgpXnsZ0Zk6PT6BhJewT01ERCZBht8X9xMvHZ0lMR5h5+gM64zdvWpKXEpISJUMDbe8imi6KxnGu9Oy1MiFIFQScXGaDEntB4UxUsb+eu+talPNynVpkxN2JIlYUe12gwkYqaz8WJDQghXYBALqcEQx6kLr9eUJZ/h1vB97GC//udFp9QDETgKaBJBy7+xWnCHduRuPAi8Ma6aWG4RXGSSpJBqXu6JVzuQ13X96sPOMJ4frOfE0kLBl2AadOv8MSsk4xme1Ksh6nuQR0RzA== 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=7PrelIsoG7r+wBcj131V/cZ1XCcRe/nkHy6rb17nt0Q=; b=oFLB9jMylD+t7fbDOOb1If2ZdpuBmobcnj7ugf+34xTAw47nLcBsLezu3wIXUn0G2UZhbfy48vu9JzCO4pKCJbtZIz/6ZXObpJcw9HK1ReAWyPTgniwEB+MDbSf924XuV91I7E3XIWkEIYJboqV93n8NigADbFc9Ghuag+LO+Lk0M2zrpNbDX5D/j1Xfz24Oh96SN3pfMjSX99/8JOqMcWMA25cDZdZJ4++S7QtjlE6V9fG/+JRYeuHlf8/eKFQutNxSwqQ6jfJ3DFP6eyTqzlq9xcXOkA5QwekjUJ+7eoPc+kl4dM0dIeA1qK/3dpOZzVgQGgVpJOlbVeYQVu3y4g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=vivo.com; dmarc=pass action=none header.from=vivo.com; dkim=pass header.d=vivo.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vivo0.onmicrosoft.com; s=selector2-vivo0-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=7PrelIsoG7r+wBcj131V/cZ1XCcRe/nkHy6rb17nt0Q=; b=mQ2cJ7JcUpLFauHXdyitLJxpEq1HwZASJM1A+RCC+c3UHCUCDV6SlkLXH2Mw5EL1NbcvnLHu5qiQkArejjCGx+GZ1Ekz3ACDM5bQ7d2qr/ialWGmrpPdbCgnPjsj5TMsQ9bC1qHtaQlc7VC6nJ/q58XRiJY6WeGr3DAtFkpHawE= Authentication-Results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=vivo.com; Received: from SL2PR06MB3082.apcprd06.prod.outlook.com (2603:1096:100:37::17) by SL2PR06MB3388.apcprd06.prod.outlook.com (2603:1096:100:3c::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.16; Fri, 15 Oct 2021 06:48:19 +0000 Received: from SL2PR06MB3082.apcprd06.prod.outlook.com ([fe80::4c9b:b71f:fb67:6414]) by SL2PR06MB3082.apcprd06.prod.outlook.com ([fe80::4c9b:b71f:fb67:6414%6]) with mapi id 15.20.4608.017; Fri, 15 Oct 2021 06:48:19 +0000 From: Qing Wang To: Thierry Reding , Sam Ravnborg , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Cc: Qing Wang Subject: [PATCH] drm: panel: replace snprintf in show functions with sysfs_emit Date: Thu, 14 Oct 2021 23:48:10 -0700 Message-Id: <1634280490-4429-1-git-send-email-wangqing@vivo.com> X-Mailer: git-send-email 2.7.4 X-ClientProxiedBy: HK2PR0401CA0009.apcprd04.prod.outlook.com (2603:1096:202:2::19) To SL2PR06MB3082.apcprd06.prod.outlook.com (2603:1096:100:37::17) MIME-Version: 1.0 Received: from ubuntu.localdomain (218.213.202.189) by HK2PR0401CA0009.apcprd04.prod.outlook.com (2603:1096:202:2::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.4608.15 via Frontend Transport; Fri, 15 Oct 2021 06:48:18 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: aeae979f-6f2c-4fe5-8e40-08d98fa7c5ed X-MS-TrafficTypeDiagnostic: SL2PR06MB3388: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2887; 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:SL2PR06MB3082.apcprd06.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(38350700002)(38100700002)(2616005)(316002)(2906002)(26005)(107886003)(8676002)(66556008)(83380400001)(186003)(66946007)(6486002)(956004)(508600001)(36756003)(4326008)(66476007)(6666004)(6506007)(8936002)(110136005)(5660300002)(86362001)(6512007)(52116002); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: vivo.com X-MS-Exchange-CrossTenant-Network-Message-Id: aeae979f-6f2c-4fe5-8e40-08d98fa7c5ed X-MS-Exchange-CrossTenant-AuthSource: SL2PR06MB3082.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Oct 2021 06:48:19.5214 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 923e42dc-48d5-4cbe-b582-1a797a6412ed X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: RF0/FAWtIVs+MwnuFG98RmOJcvoxR2hdAfnMEVfIjeJQxGdMM0SQVl+r9QX3bFNVv2iNJDzrN5sh1X19Tfn3NA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SL2PR06MB3388 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" show() must not use snprintf() when formatting the value to be returned to user space. Fix the following coccicheck warning: drivers/gpu/drm/panel/panel-dsi-cm.c:251: WARNING: use scnprintf or sprintf. drivers/gpu/drm/panel/panel-dsi-cm.c:271: WARNING: use scnprintf or sprintf. Use sysfs_emit instead of scnprintf or sprintf makes more sense. Signed-off-by: Qing Wang Reviewed-by: Sebastian Reichel --- drivers/gpu/drm/panel/panel-dsi-cm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-dsi-cm.c b/drivers/gpu/drm/panel/panel-dsi-cm.c index 5fbfb71..a8efb06 100644 --- a/drivers/gpu/drm/panel/panel-dsi-cm.c +++ b/drivers/gpu/drm/panel/panel-dsi-cm.c @@ -248,7 +248,7 @@ static ssize_t num_dsi_errors_show(struct device *dev, if (r) return r; - return snprintf(buf, PAGE_SIZE, "%d\n", errors); + return sysfs_emit(buf, "%d\n", errors); } static ssize_t hw_revision_show(struct device *dev, @@ -268,7 +268,7 @@ static ssize_t hw_revision_show(struct device *dev, if (r) return r; - return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); + return sysfs_emit(buf, "%02x.%02x.%02x\n", id1, id2, id3); } static DEVICE_ATTR_RO(num_dsi_errors);