From patchwork Thu Sep 7 06:50:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Varadarajan Narayanan X-Patchwork-Id: 13376720 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 D9BB9EC8742 for ; Thu, 7 Sep 2023 17:26:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236629AbjIGR0o (ORCPT ); Thu, 7 Sep 2023 13:26:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37860 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230121AbjIGR0n (ORCPT ); Thu, 7 Sep 2023 13:26:43 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BBFA21BF1; Thu, 7 Sep 2023 10:26:14 -0700 (PDT) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3874sXB3031786; Thu, 7 Sep 2023 06:51:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=yG6mFWXl4fcuCqhaaHC5VY7Wo03vDdwMjZCoZHw51FE=; b=W+5XXg21ht5M9HfmjL+pBxfxkHQAeqfOTNNWgVX1fQrd8rgEakk+uP/b1bQ+zDV14emm tp8Y0qHSPUnlJbg/s5oTat68pNRwPinZgG7H8OoDgyn071qVY3SrgrtiF3pjkVAP0In8 +c7HG4FtCDrcTqOTo2wvrMXyS8XIRem5Nn+zV+/ZDObAx8Mm8ZNAMH9lxupX2vIAWSUu OiEvAIlkvMpDLooWx6JFyMx9jc01sPQdXcUZlg1hnyk+3+nhM1wKe2TyeL87zkoF+r84 AmEHpBS1JZRiKbDxEM3akr0UVJl39BgTYsk6BM2dnSPf+JH7LfxJjbCrZGXth29lYTmS Wg== Received: from nasanppmta03.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3sxgsquduf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 07 Sep 2023 06:51:22 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3876p4oN014435 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 7 Sep 2023 06:51:04 GMT Received: from varda-linux.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.36; Wed, 6 Sep 2023 23:51:00 -0700 From: Varadarajan Narayanan To: , , , , , , , , Subject: [PATCH] phy: qcom: m31: Remove unwanted qphy->vreg is NULL check Date: Thu, 7 Sep 2023 12:20:52 +0530 Message-ID: <1694069452-3794-1-git-send-email-quic_varada@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: qRv52u4dAgZquABNiNR-X3J_Kpb4MxUV X-Proofpoint-ORIG-GUID: qRv52u4dAgZquABNiNR-X3J_Kpb4MxUV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-06_12,2023-09-05_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 spamscore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 phishscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309070059 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Fix the following Smatch complaint: drivers/phy/qualcomm/phy-qcom-m31.c:175 m31usb_phy_init() warn: variable dereferenced before check 'qphy->vreg' (see line 167) drivers/phy/qualcomm/phy-qcom-m31.c 166 167 ret = regulator_enable(qphy->vreg); ^^^^^^^^^^ Unchecked dereference 168 if (ret) { 169 dev_err(&phy->dev, "failed to enable regulator, %d\n", ret); 170 return ret; 171 } 172 173 ret = clk_prepare_enable(qphy->clk); 174 if (ret) { 175 if (qphy->vreg) ^^^^^^^^^^ Checked too late 176 regulator_disable(qphy->vreg); 177 dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret); Since the phy will not get registered if qphy->vreg is NULL, this check is not needed. Reported-by: Dan Carpenter Closes: https://lore.kernel.org/linux-phy/cbd26132-c624-44b7-a073-73222b287338@moroto.mountain/T/#u Fixes: 08e49af50701 ("phy: qcom: Introduce M31 USB PHY driver") Signed-off-by: Varadarajan Narayanan --- drivers/phy/qualcomm/phy-qcom-m31.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/phy/qualcomm/phy-qcom-m31.c b/drivers/phy/qualcomm/phy-qcom-m31.c index 1875fe3..5e8f657 100644 --- a/drivers/phy/qualcomm/phy-qcom-m31.c +++ b/drivers/phy/qualcomm/phy-qcom-m31.c @@ -172,8 +172,7 @@ static int m31usb_phy_init(struct phy *phy) ret = clk_prepare_enable(qphy->clk); if (ret) { - if (qphy->vreg) - regulator_disable(qphy->vreg); + regulator_disable(qphy->vreg); dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret); return ret; }