From patchwork Fri Mar 5 03:49:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Yongjun X-Patchwork-Id: 12117457 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C11FC433E0 for ; Fri, 5 Mar 2021 03:40:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 629C664FFD for ; Fri, 5 Mar 2021 03:40:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229516AbhCEDkm (ORCPT ); Thu, 4 Mar 2021 22:40:42 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]:13473 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229494AbhCEDkm (ORCPT ); Thu, 4 Mar 2021 22:40:42 -0500 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4DsD4117h3zjTkV; Fri, 5 Mar 2021 11:38:57 +0800 (CST) Received: from localhost.localdomain (10.175.102.38) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.498.0; Fri, 5 Mar 2021 11:40:31 +0800 From: 'Wei Yongjun To: , Felipe Balbi , "Greg Kroah-Hartman" , Krzysztof Kozlowski , Nathan Chancellor , Nick Desaulniers , "Gustavo A. R. Silva" , Arnd Bergmann CC: , , , , "Hulk Robot" Subject: [PATCH -next] USB: gadget: udc: s3c2410_udc: fix return value check in s3c2410_udc_probe() Date: Fri, 5 Mar 2021 03:49:27 +0000 Message-ID: <20210305034927.3232386-1-weiyongjun1@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.102.38] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org From: Wei Yongjun In case of error, the function devm_platform_ioremap_resource() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Fixes: 188db4435ac6 ("usb: gadget: s3c: use platform resources") Reported-by: Hulk Robot Signed-off-by: Wei Yongjun Reviewed-by: Arnd Bergmann Reviewed-by: Krzysztof Kozlowski --- drivers/usb/gadget/udc/s3c2410_udc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index f1ea51476add..1d3ebb07ccd4 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -1773,8 +1773,8 @@ static int s3c2410_udc_probe(struct platform_device *pdev) udc_info = dev_get_platdata(&pdev->dev); base_addr = devm_platform_ioremap_resource(pdev, 0); - if (!base_addr) { - retval = -ENOMEM; + if (IS_ERR(base_addr)) { + retval = PTR_ERR(base_addr); goto err_mem; }