From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 ECD68C433DB for ; Wed, 24 Feb 2021 01:33:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABCB064E6C for ; Wed, 24 Feb 2021 01:33:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232658AbhBXBco (ORCPT ); Tue, 23 Feb 2021 20:32:44 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:12644 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231414AbhBXB36 (ORCPT ); Tue, 23 Feb 2021 20:29:58 -0500 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4DldZM5G9Cz16950; Wed, 24 Feb 2021 09:27:23 +0800 (CST) Received: from localhost.localdomain (10.175.102.38) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.498.0; Wed, 24 Feb 2021 09:28:52 +0800 From: Wei Yongjun To: Hulk Robot , Jaroslav Kysela , "Takashi Iwai" , Lauri Kasanen , Thomas Bogendoerfer CC: Wei Yongjun , , Subject: [PATCH -next] sound: n64: Fix return value check in n64audio_probe() Date: Wed, 24 Feb 2021 01:38:03 +0000 Message-ID: <20210224013803.2146953-1-weiyongjun1@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-Originating-IP: [10.175.102.38] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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: 1448f8acf4cc ("sound: Add n64 driver") Reported-by: Hulk Robot Signed-off-by: Wei Yongjun --- sound/mips/snd-n64.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/mips/snd-n64.c b/sound/mips/snd-n64.c index ca6b4b99da98..e35e93157755 100644 --- a/sound/mips/snd-n64.c +++ b/sound/mips/snd-n64.c @@ -312,14 +312,14 @@ static int __init n64audio_probe(struct platform_device *pdev) } priv->mi_reg_base = devm_platform_ioremap_resource(pdev, 0); - if (!priv->mi_reg_base) { - err = -EINVAL; + if (IS_ERR(priv->mi_reg_base)) { + err = PTR_ERR(priv->mi_reg_base); goto fail_dma_alloc; } priv->ai_reg_base = devm_platform_ioremap_resource(pdev, 1); - if (!priv->ai_reg_base) { - err = -EINVAL; + if (IS_ERR(priv->ai_reg_base)) { + err = PTR_ERR(priv->ai_reg_base); goto fail_dma_alloc; }