From patchwork Thu Jun 10 09:17:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 12312417 X-Patchwork-Delegate: kuba@kernel.org 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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 00403C47094 for ; Thu, 10 Jun 2021 09:13:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D44EB6140F for ; Thu, 10 Jun 2021 09:13:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230389AbhFJJPG (ORCPT ); Thu, 10 Jun 2021 05:15:06 -0400 Received: from szxga01-in.huawei.com ([45.249.212.187]:3828 "EHLO szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230086AbhFJJPF (ORCPT ); Thu, 10 Jun 2021 05:15:05 -0400 Received: from dggemv704-chm.china.huawei.com (unknown [172.30.72.54]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4G0ynB1qdJzWstd; Thu, 10 Jun 2021 17:08:14 +0800 (CST) Received: from dggpeml500017.china.huawei.com (7.185.36.243) by dggemv704-chm.china.huawei.com (10.3.19.47) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 10 Jun 2021 17:13:06 +0800 Received: from huawei.com (10.175.103.91) by dggpeml500017.china.huawei.com (7.185.36.243) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 10 Jun 2021 17:13:05 +0800 From: Yang Yingliang To: , CC: , , Subject: [PATCH net-next] net: mido: mdio-mux-bcm-iproc: Use devm_platform_get_and_ioremap_resource() Date: Thu, 10 Jun 2021 17:17:12 +0800 Message-ID: <20210610091712.4146291-1-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.103.91] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml500017.china.huawei.com (7.185.36.243) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Use devm_platform_get_and_ioremap_resource() to simplify code and avoid a null-ptr-deref by checking 'res' in it. Signed-off-by: Yang Yingliang --- drivers/net/mdio/mdio-mux-bcm-iproc.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/net/mdio/mdio-mux-bcm-iproc.c b/drivers/net/mdio/mdio-mux-bcm-iproc.c index 239e88c7a272..014c0baedbd2 100644 --- a/drivers/net/mdio/mdio-mux-bcm-iproc.c +++ b/drivers/net/mdio/mdio-mux-bcm-iproc.c @@ -187,7 +187,9 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev) return -ENOMEM; md->dev = &pdev->dev; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + md->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); + if (IS_ERR(md->base)) + return PTR_ERR(md->base); if (res->start & 0xfff) { /* For backward compatibility in case the * base address is specified with an offset. @@ -196,9 +198,6 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev) res->start &= ~0xfff; res->end = res->start + MDIO_REG_ADDR_SPACE_SIZE - 1; } - md->base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(md->base)) - return PTR_ERR(md->base); md->mii_bus = devm_mdiobus_alloc(&pdev->dev); if (!md->mii_bus) {