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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 31235C282C8 for ; Mon, 28 Jan 2019 13:24:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0B55120989 for ; Mon, 28 Jan 2019 13:24:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726790AbfA1NY2 (ORCPT ); Mon, 28 Jan 2019 08:24:28 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:38856 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726647AbfA1NY1 (ORCPT ); Mon, 28 Jan 2019 08:24:27 -0500 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id D0AB047B67543F56BF28; Mon, 28 Jan 2019 21:24:24 +0800 (CST) Received: from localhost (10.177.31.96) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.408.0; Mon, 28 Jan 2019 21:24:15 +0800 From: YueHaibing To: , , , CC: , , YueHaibing Subject: [PATCH net-next] mdio_bus: Fix PTR_ERR() usage after initialization to constant Date: Mon, 28 Jan 2019 21:24:09 +0800 Message-ID: <20190128132409.17736-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.31.96] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Fix coccinelle warning: ./drivers/net/phy/mdio_bus.c:51:5-12: ERROR: PTR_ERR applied after initialization to constant on line 44 ./drivers/net/phy/mdio_bus.c:52:5-12: ERROR: PTR_ERR applied after initialization to constant on line 44 fix this by using IS_ERR before PTR_ERR Fixes: bafbdd527d56 ("phylib: Add device reset GPIO support") Signed-off-by: YueHaibing --- drivers/net/phy/mdio_bus.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 3d31358..802716a 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -42,17 +42,20 @@ static int mdiobus_register_gpiod(struct mdio_device *mdiodev) { struct gpio_desc *gpiod = NULL; + int ret; /* Deassert the optional reset signal */ if (mdiodev->dev.of_node) gpiod = fwnode_get_named_gpiod(&mdiodev->dev.of_node->fwnode, "reset-gpios", 0, GPIOD_OUT_LOW, "PHY reset"); - if (PTR_ERR(gpiod) == -ENOENT || - PTR_ERR(gpiod) == -ENOSYS) - gpiod = NULL; - else if (IS_ERR(gpiod)) - return PTR_ERR(gpiod); + if (IS_ERR(gpiod)) { + ret = PTR_ERR(gpiod); + if (ret == -ENOENT || ret == -ENOSYS) + gpiod = NULL; + else + return ret; + } mdiodev->reset = gpiod; -- 2.7.4