From patchwork Fri Jan 1 16:54:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yangtao Li X-Patchwork-Id: 356095 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 95CEAC433E9 for ; Fri, 1 Jan 2021 16:59:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 76AA222228 for ; Fri, 1 Jan 2021 16:59:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727776AbhAAQ73 (ORCPT ); Fri, 1 Jan 2021 11:59:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36320 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727241AbhAAQ71 (ORCPT ); Fri, 1 Jan 2021 11:59:27 -0500 Received: from mail-pf1-x434.google.com (mail-pf1-x434.google.com [IPv6:2607:f8b0:4864:20::434]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B9E22C0613C1; Fri, 1 Jan 2021 08:58:46 -0800 (PST) Received: by mail-pf1-x434.google.com with SMTP id h186so12675496pfe.0; Fri, 01 Jan 2021 08:58:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=U36W0smHOpfrbDvJ1LTZufZA8+bqUZFQOq+xGSvEz0Q=; b=gKaKzWCjoMrxvhanzaf7tyCsDC/hfSnueuE8JW5m51OOp9Z6WvwF/9vPAZN7rMzBge URiLDqq57o/V3sk4oFnTbpTF6dTUDM071vmfcj+39aaweZske2Hmg7/xz6Agpup5MvhE VCTOBGdMDYWKKT3SSRBBBqzcBStN4t36/GnqgKjx7dpq6RneL6FgqY9pO5wzwvrNKhqy FN0LMPSXoDbAUhapYneJJIH2yRgbV0fyIKNjmx0yEVcyCFbUAQaUPi14s3gI9TzG7kbr 5XkvuyB4qXKyvKfKF1Gw8IdLeTgbKRYYCaCx3fxt/AMk6UGti0Lm20Ll/jIh7L2BebN+ jesw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=U36W0smHOpfrbDvJ1LTZufZA8+bqUZFQOq+xGSvEz0Q=; b=jTRUFpKGUuU34oXkDpU4GO3n9Ve2wKfliQLhVds+ZGS0oemORcRRBM70Xro36pIhFy oWqjWcoTb0qZvRYR6wgHgiBL0F45z9dW/VPRHFQDeXi9tWDLAxdjI/efegEG41EXB5Aj t/lVOvaXzckYKDP47SyDUhAbJbYZJ6nfrzBJQqlQLDVXEPjH8fJjZqfysN+b9b8fVHX2 ia1RvBkKvCpMdU30mdy6F5LJIZJ3VG9UgDKgc4Ha2CyxNKrlDXtMqILsojsRBCWETOdl cii4MKM4c1Um4jVrMHra+mkZfO2fusVUJ2ypGtm4at9KKb848vrcuhvEmGFe6tQe1Qid 0Z3w== X-Gm-Message-State: AOAM5324R8AO+x38K0nXR2iV48iBsfYEHGjwNk75bRk85h9tpSPKmNpb w6Zb/UbIm8D1SzdtzyuHsuE= X-Google-Smtp-Source: ABdhPJzx00BSeoHxNsLlnYUTpYihiZKk22bXxnJ8w2R+GCGYn3Ld1jNT8zpXeyfnV8iIpkFNwzyFcw== X-Received: by 2002:aa7:9a07:0:b029:1a6:5f93:a19f with SMTP id w7-20020aa79a070000b02901a65f93a19fmr35843925pfj.21.1609520326359; Fri, 01 Jan 2021 08:58:46 -0800 (PST) Received: from localhost.localdomain ([43.255.31.23]) by smtp.gmail.com with ESMTPSA id 84sm50002729pfy.9.2021.01.01.08.58.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Jan 2021 08:58:45 -0800 (PST) From: Yangtao Li To: myungjoo.ham@samsung.com, kyungmin.park@samsung.com, cw00.choi@samsung.com, krzk@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, digetx@gmail.com, thierry.reding@gmail.com, jonathanh@nvidia.com, yuq825@gmail.com, airlied@linux.ie, daniel@ffwll.ch, robdclark@gmail.com, sean@poorly.run, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, stanimir.varbanov@linaro.org, agross@kernel.org, bjorn.andersson@linaro.org, mchehab@kernel.org, lukasz.luba@arm.com, adrian.hunter@intel.com, ulf.hansson@linaro.org, vireshk@kernel.org, nm@ti.com, sboyd@kernel.org, broonie@kernel.org, gregkh@linuxfoundation.org, jirislaby@kernel.org, rjw@rjwysocki.net, jcrouse@codeaurora.org, hoegsberg@google.com, eric@anholt.net, tzimmermann@suse.de, marijn.suijten@somainline.org, gustavoars@kernel.org, emil.velikov@collabora.com, jonathan@marek.ca, akhilpo@codeaurora.org, smasetty@codeaurora.org, airlied@redhat.com, masneyb@onstation.org, kalyan_t@codeaurora.org, tanmay@codeaurora.org, tiny.windzz@gmail.com, ddavenport@chromium.org, jsanka@codeaurora.org, rnayak@codeaurora.org, tongtiangen@huawei.com, miaoqinglang@huawei.com, khsieh@codeaurora.org, abhinavk@codeaurora.org, chandanu@codeaurora.org, groeck@chromium.org, varar@codeaurora.org, mka@chromium.org, harigovi@codeaurora.org, rikard.falkeborn@gmail.com, natechancellor@gmail.com, georgi.djakov@linaro.org, akashast@codeaurora.org, parashar@codeaurora.org, dianders@chromium.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org, lima@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, linux-spi@vger.kernel.org, linux-serial@vger.kernel.org Subject: [PATCH 15/31] drm/msm: fix potential mem leak Date: Fri, 1 Jan 2021 16:54:51 +0000 Message-Id: <20210101165507.19486-16-tiny.windzz@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210101165507.19486-1-tiny.windzz@gmail.com> References: <20210101165507.19486-1-tiny.windzz@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-serial@vger.kernel.org We should use dev_pm_opp_put_clkname() to free opp table each time dev_pm_opp_of_add_table() got error. Signed-off-by: Yangtao Li --- drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 10 ++++++---- drivers/gpu/drm/msm/dsi/dsi_host.c | 8 +++++--- 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c index 374b0e8471e6..6f19dfcb4965 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c @@ -1093,9 +1093,12 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) return PTR_ERR(dpu_kms->opp_table); /* OPP table is optional */ ret = dev_pm_opp_of_add_table(dev); - if (ret && ret != -ENODEV) { - dev_err(dev, "invalid OPP table in device tree\n"); - goto put_clkname; + if (ret) { + dev_pm_opp_put_clkname(dpu_kms->opp_table); + if (ret != -ENODEV) { + dev_err(dev, "invalid OPP table in device tree\n"); + return ret; + } } mp = &dpu_kms->mp; @@ -1122,7 +1125,6 @@ static int dpu_bind(struct device *dev, struct device *master, void *data) return ret; err: dev_pm_opp_of_remove_table(dev); -put_clkname: dev_pm_opp_put_clkname(dpu_kms->opp_table); return ret; } diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index ab281cba0f08..a282307f2799 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -1891,10 +1891,12 @@ int msm_dsi_host_init(struct msm_dsi *msm_dsi) return PTR_ERR(msm_host->opp_table); /* OPP table is optional */ ret = dev_pm_opp_of_add_table(&pdev->dev); - if (ret && ret != -ENODEV) { - dev_err(&pdev->dev, "invalid OPP table in device tree\n"); + if (ret) { dev_pm_opp_put_clkname(msm_host->opp_table); - return ret; + if (ret != -ENODEV) { + dev_err(&pdev->dev, "invalid OPP table in device tree\n"); + return ret; + } } init_completion(&msm_host->dma_comp);