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Wysocki" , Viresh Kumar , Matthias Brugger , AngeloGioacchino Del Regno , Rex-BC Chen , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Wan Jiabing Subject: [PATCH] cpufreq: mediatek: Fix NULL pointer dereference in mediatek-cpufreq Date: Tue, 26 Apr 2022 19:17:14 +0800 Message-Id: <20220426111715.627609-1-wanjiabing@vivo.com> X-Mailer: git-send-email 2.35.3 X-ClientProxiedBy: HK0PR03CA0120.apcprd03.prod.outlook.com (2603:1096:203:b0::36) To SG2PR06MB3367.apcprd06.prod.outlook.com (2603:1096:4:78::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 54084a91-fa42-4b39-7881-08da27765b6d X-MS-TrafficTypeDiagnostic: PS1PR0601MB3660:EE_ X-Microsoft-Antispam-PRVS: 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:SG2PR06MB3367.apcprd06.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230001)(4636009)(366004)(6486002)(110136005)(86362001)(186003)(508600001)(8676002)(36756003)(66556008)(4326008)(107886003)(38100700002)(66946007)(66476007)(2906002)(8936002)(4744005)(1076003)(2616005)(26005)(38350700002)(5660300002)(83380400001)(6666004)(6512007)(52116002)(316002)(6506007); 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: 54084a91-fa42-4b39-7881-08da27765b6d X-MS-Exchange-CrossTenant-AuthSource: SG2PR06MB3367.apcprd06.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Apr 2022 11:17:32.2683 (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: er/8oIDGQyIvabZJmtQXScLfqdlZP/glH6GGpjNIbKweIljrsWWuFUNMNxbZonZ82bOew2olFKTqhckltWPx+A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PS1PR0601MB3660 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220426_041744_199550_49CDABD6 X-CRM114-Status: UNSURE ( 9.45 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Fix following coccicheck error: drivers/cpufreq/mediatek-cpufreq.c:464:16-23: ERROR: info is NULL but dereferenced. Use pr_err instead of dev_err to avoid dereferring a NULL pointer. Fixes: f52b16ba9fe4 ("cpufreq: mediatek: Use device print to show logs") Signed-off-by: Wan Jiabing Reviewed-by: Matthias Brugger --- drivers/cpufreq/mediatek-cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index bcabb3726a5b..901042e9a240 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -461,8 +461,8 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy) info = mtk_cpu_dvfs_info_lookup(policy->cpu); if (!info) { - dev_err(info->cpu_dev, - "dvfs info for cpu%d is not initialized.\n", policy->cpu); + pr_err("dvfs info for cpu%d is not initialized.\n", + policy->cpu); return -EINVAL; }