From patchwork Wed Apr 19 02:07:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kang Chen X-Patchwork-Id: 675532 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 6B821C6FD18 for ; Wed, 19 Apr 2023 02:12:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231221AbjDSCMT (ORCPT ); Tue, 18 Apr 2023 22:12:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48058 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230027AbjDSCMS (ORCPT ); Tue, 18 Apr 2023 22:12:18 -0400 Received: from hust.edu.cn (mail.hust.edu.cn [202.114.0.240]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B333C2681; Tue, 18 Apr 2023 19:12:17 -0700 (PDT) Received: from passwd123-ThinkStation-P920.. ([222.20.94.23]) (user=void0red@hust.edu.cn mech=LOGIN bits=0) by mx1.hust.edu.cn with ESMTP id 33J27wUg015429-33J27wUh015429 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Wed, 19 Apr 2023 10:07:58 +0800 From: Kang Chen To: daniel.lezcano@linaro.org Cc: amitk@kernel.org, angelogioacchino.delregno@collabora.com, bchihi@baylibre.com, daniel@makrotopia.org, dzm91@hust.edu.cn, error27@gmail.com, henry.yen@mediatek.com, hust-os-kernel-patches@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-pm@vger.kernel.org, matthias.bgg@gmail.com, rafael@kernel.org, rdunlap@infradead.org, rui.zhang@intel.com, Kang Chen Subject: [PATCH v5 1/2] thermal: mediatek: use devm_of_iomap to avoid resource leak in mtk_thermal_probe Date: Wed, 19 Apr 2023 10:07:48 +0800 Message-Id: <20230419020749.621257-1-void0red@hust.edu.cn> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-FEAS-AUTH-USER: void0red@hust.edu.cn Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Smatch reports: 1. mtk_thermal_probe() warn: 'apmixed_base' from of_iomap() not released. 2. mtk_thermal_probe() warn: 'auxadc_base' from of_iomap() not released. The original code forgets to release iomap resource when handling errors, fix it by switch to devm_of_iomap. Fixes: 89945047b166 ("thermal: mediatek: Add tsensor support for V2 thermal system") Signed-off-by: Kang Chen Reviewed-by: Dongliang Mu Reviewed-by: AngeloGioacchino Del Regno --- v5 -> v4: no modify v4 -> v3: no modify v3 -> v2: fix typo and put of_node in error handling v2 -> v1: use devm_of_iomap instead. drivers/thermal/mediatek/auxadc_thermal.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/mediatek/auxadc_thermal.c b/drivers/thermal/mediatek/auxadc_thermal.c index b6bb9eaafb74..dcc64237ea60 100644 --- a/drivers/thermal/mediatek/auxadc_thermal.c +++ b/drivers/thermal/mediatek/auxadc_thermal.c @@ -1212,7 +1212,12 @@ static int mtk_thermal_probe(struct platform_device *pdev) return -ENODEV; } - auxadc_base = of_iomap(auxadc, 0); + auxadc_base = devm_of_iomap(&pdev->dev, auxadc, 0, NULL); + if (IS_ERR(auxadc_base)) { + of_node_put(auxadc); + return PTR_ERR(auxadc_base); + } + auxadc_phys_base = of_get_phys_base(auxadc); of_node_put(auxadc); @@ -1228,7 +1233,12 @@ static int mtk_thermal_probe(struct platform_device *pdev) return -ENODEV; } - apmixed_base = of_iomap(apmixedsys, 0); + apmixed_base = devm_of_iomap(&pdev->dev, apmixedsys, 0, NULL); + if (IS_ERR(apmixed_base)) { + of_node_put(apmixedsys); + return PTR_ERR(apmixed_base); + } + apmixed_phys_base = of_get_phys_base(apmixedsys); of_node_put(apmixedsys);