From patchwork Wed Nov 30 10:12:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "yiyang \(D\)" X-Patchwork-Id: 629847 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 2A937C352A1 for ; Wed, 30 Nov 2022 10:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233512AbiK3KQA (ORCPT ); Wed, 30 Nov 2022 05:16:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45828 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231250AbiK3KP7 (ORCPT ); Wed, 30 Nov 2022 05:15:59 -0500 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A61BF61; Wed, 30 Nov 2022 02:15:57 -0800 (PST) Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4NMZpC0DgPzmVxP; Wed, 30 Nov 2022 18:15:15 +0800 (CST) Received: from kwepemm600014.china.huawei.com (7.193.23.54) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 30 Nov 2022 18:15:55 +0800 Received: from ubuntu1804.huawei.com (10.67.175.28) by kwepemm600014.china.huawei.com (7.193.23.54) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 30 Nov 2022 18:15:55 +0800 From: Yi Yang To: , , CC: , Subject: [PATCH] usb: fotg210-udc: fix potential memory leak in fotg210_udc_probe() Date: Wed, 30 Nov 2022 18:12:51 +0800 Message-ID: <20221130101251.245399-1-yiyang13@huawei.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.67.175.28] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600014.china.huawei.com (7.193.23.54) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org In fotg210_udc_probe(), if devm_clk_get() or clk_prepare_enable() fails, 'fotg210' will not be freed, which will lead to a memory leak. Fix it by moving kfree() to a proper location. Fixes: 718a38d092ec ("fotg210-udc: Handle PCLK") Signed-off-by: Yi Yang Reviewed-by: Andrzej Pietrasiewicz Acked-by: Linus Walleij --- drivers/usb/fotg210/fotg210-udc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/usb/fotg210/fotg210-udc.c b/drivers/usb/fotg210/fotg210-udc.c index b9ea6c6d931c..a366d69c1818 100644 --- a/drivers/usb/fotg210/fotg210-udc.c +++ b/drivers/usb/fotg210/fotg210-udc.c @@ -1178,7 +1178,7 @@ int fotg210_udc_probe(struct platform_device *pdev) ret = clk_prepare_enable(fotg210->pclk); if (ret) { dev_err(dev, "failed to enable PCLK\n"); - return ret; + goto err; } } else if (PTR_ERR(fotg210->pclk) == -EPROBE_DEFER) { /* @@ -1302,8 +1302,7 @@ int fotg210_udc_probe(struct platform_device *pdev) if (!IS_ERR(fotg210->pclk)) clk_disable_unprepare(fotg210->pclk); - kfree(fotg210); - err: + kfree(fotg210); return ret; }