From patchwork Mon Apr 1 01:37:49 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10878925 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4274C17E1 for ; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 280EC28739 for ; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1BB2D287F5; Mon, 1 Apr 2019 01:38:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id A839228739 for ; Mon, 1 Apr 2019 01:38:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=QbX+ZUxRkUW+cbzMTq4w3Y/+7swFZwu0hbo7W3fhaog=; b=kiGQzOdtJjj2xSQO8sdXSdVfdf zR2e6yd/ZKQqMcM3qP/Dqtbktgtx8F8wQz3jjvSt2gijA8ZxMHlmagO4tf3pM/UDgW8xBOxSYWajR IUdvfMl1PeWsRY/mQyLKqSpUoXGn9VRib33idLKW+PpaNd4ZpTrtxpEj0IQhkDNcLMtY6Ww1Zz2n4 mLVUlg0GxpPN5i0G2ZtVG2ipbw567vI73/oyXfqXJWNgL3yi/s07CPlUGu3nQIn3sZ5Ya0ticq2FQ 2MgavpjlFkicQJkYvCianXv2wc+uXnHXYekvAeZr+GVcvux1oA7TjFy/AAjmSlOh08oJeWhcjkmLh lKQ8sYug==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hAluF-0003fn-EP; Mon, 01 Apr 2019 01:38:35 +0000 Received: from out1.zte.com.cn ([202.103.147.172] helo=mxct.zte.com.cn) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hAluA-0003dW-S4 for linux-arm-kernel@lists.infradead.org; Mon, 01 Apr 2019 01:38:33 +0000 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 5D3A5476B23B7291671F; Mon, 1 Apr 2019 09:38:19 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x311cFAZ061205; Mon, 1 Apr 2019 09:38:15 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019040109381829-7035256 ; Mon, 1 Apr 2019 09:38:18 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Subject: [PATCH 2/7] cpufreq: imx6q: fix possible object reference leak Date: Mon, 1 Apr 2019 09:37:49 +0800 Message-Id: <1554082674-2049-3-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1554082674-2049-1-git-send-email-wen.yang99@zte.com.cn> References: <1554082674-2049-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-04-01 09:38:18, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-04-01 09:38:15, Serialize complete at 2019-04-01 09:38:15 X-MAIL: mse01.zte.com.cn x311cFAZ061205 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190331_183831_082414_14259013 X-CRM114-Status: GOOD ( 12.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wang.yi59@zte.com.cn, Fabio Estevam , linux-pm@vger.kernel.org, Viresh Kumar , Sascha Hauer , "Rafael J. Wysocki" , NXP Linux Team , Pengutronix Kernel Team , Shawn Guo , Wen Yang , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The call to of_node_get returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: ./drivers/cpufreq/imx6q-cpufreq.c:391:4-10: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 348, but without a corresponding object release within this function. ./drivers/cpufreq/imx6q-cpufreq.c:395:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 348, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: "Rafael J. Wysocki" Cc: Viresh Kumar Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: linux-pm@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/cpufreq/imx6q-cpufreq.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index a4ff09f..3e17560 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -388,11 +388,11 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev) ret = imx6ul_opp_check_speed_grading(cpu_dev); if (ret) { if (ret == -EPROBE_DEFER) - return ret; + goto put_node; dev_err(cpu_dev, "failed to read ocotp: %d\n", ret); - return ret; + goto put_node; } } else { imx6q_opp_check_speed_grading(cpu_dev);