From patchwork Fri Apr 14 08:41:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 673577 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 94DA8C77B6E for ; Fri, 14 Apr 2023 08:42:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230182AbjDNImw (ORCPT ); Fri, 14 Apr 2023 04:42:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51666 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230172AbjDNImt (ORCPT ); Fri, 14 Apr 2023 04:42:49 -0400 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BF477ED7; Fri, 14 Apr 2023 01:42:44 -0700 (PDT) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33E8X1nu006620; Fri, 14 Apr 2023 10:42:34 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=selector1; bh=FbOTl+8MNsgRED5FCS4rKIwqJQZWuMOClivGmNkcn8g=; b=Xr+i4UhvYLawbgqLDpK5Ddx3gVGz6c4028aQtkKGL+sl/TMRY3BdfnwQuuF14YVsg5Uu yJtllOgRvY9rjxJbaud+yBY+SbP0wdtxgjLYhCWEpCy61zN2g04Xvl3647wpRLTJco9i NvirofQdrwzxg7eKAj96wZb/Ha/zYACHE7yOyix5fWF29Z2FCtIk7bJCg55BIA7TWwq3 yKJOMSrdJq3d/wQXPeqoDcL2mCHEYzJwMGSHcoH8jV04SwswZZtMDufMRICau/Kyw1Mc iXmmmEmiNXq5tIuURaxIXlNyLjJggcK7PCKTWyHhSvPlrsOUTwc7lFkuIQF5W6AzBfgW eQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3pwsgpq3q1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Apr 2023 10:42:33 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 8FF84100038; Fri, 14 Apr 2023 10:42:08 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node2.st.com [10.75.129.70]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id A75402138E3; Fri, 14 Apr 2023 10:42:08 +0200 (CEST) Received: from localhost (10.252.1.127) by SHFDAG1NODE2.st.com (10.75.129.70) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Fri, 14 Apr 2023 10:42:09 +0200 From: Fabrice Gasnier To: , , , , CC: , , , , , , Subject: [PATCH v2 1/4] usb: dwc2: improve error handling in __dwc2_lowlevel_hw_enable Date: Fri, 14 Apr 2023 10:41:34 +0200 Message-ID: <20230414084137.1050487-2-fabrice.gasnier@foss.st.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230414084137.1050487-1-fabrice.gasnier@foss.st.com> References: <20230414084137.1050487-1-fabrice.gasnier@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.252.1.127] X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE2.st.com (10.75.129.70) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-14_03,2023-04-13_01,2023-02-09_01 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Add error handling in __dwc2_lowlevel_hw_enable() that may leave the clocks and regulators enabled upon error. Signed-off-by: Fabrice Gasnier Acked-by: Minas Harutyunyan --- drivers/usb/dwc2/platform.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index d1589ba7d322..c431ce6c119f 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -104,7 +104,7 @@ static int __dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg) if (hsotg->clk) { ret = clk_prepare_enable(hsotg->clk); if (ret) - return ret; + goto err_dis_reg; } if (hsotg->uphy) { @@ -113,10 +113,25 @@ static int __dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg) ret = hsotg->plat->phy_init(pdev, hsotg->plat->phy_type); } else { ret = phy_init(hsotg->phy); - if (ret == 0) + if (ret == 0) { ret = phy_power_on(hsotg->phy); + if (ret) + phy_exit(hsotg->phy); + } } + if (ret) + goto err_dis_clk; + + return 0; + +err_dis_clk: + if (hsotg->clk) + clk_disable_unprepare(hsotg->clk); + +err_dis_reg: + regulator_bulk_disable(ARRAY_SIZE(hsotg->supplies), hsotg->supplies); + return ret; }