From patchwork Thu Oct 20 07:18:00 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moudy Ho X-Patchwork-Id: 13012717 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 4F629C43219 for ; Thu, 20 Oct 2022 07:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230265AbiJTHSv (ORCPT ); Thu, 20 Oct 2022 03:18:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44524 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230294AbiJTHSd (ORCPT ); Thu, 20 Oct 2022 03:18:33 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02CD216E2A0; Thu, 20 Oct 2022 00:18:16 -0700 (PDT) X-UUID: 30801a809907421980614ac785b065f5-20221020 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=oyQcrxZYCAvggulovd4FRHdXOU2WjZQVKRd7NG1+zj8=; b=ByhDzTpYCFzjWm1qSQJjbRkLtm2f8JTZfj4d6d1o8DPc4UaTRpqRfpVDCYZYSgHyLbkMLSRX9uxPcGd70Q0iTA8nkVUlTF37BsC2cjuy4IUXTxDNdPZGyE9Ap9RF7J4/KY1qrg5Oh1W7Y5qoHnfVWWeL/u6hxwq0q0IYwxn3Fyc=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.12,REQID:e6256586-8665-42f6-9e5d-9e85b35cc3bd,IP:0,U RL:0,TC:0,Content:-25,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:-25 X-CID-META: VersionHash:62cd327,CLOUDID:3a4fe0ee-314c-4293-acb8-ca4299dd021f,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 30801a809907421980614ac785b065f5-20221020 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1287693578; Thu, 20 Oct 2022 15:18:03 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Thu, 20 Oct 2022 15:18:02 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Thu, 20 Oct 2022 15:18:02 +0800 From: Moudy Ho To: Mauro Carvalho Chehab , Matthias Brugger , Hans Verkuil CC: Chun-Kuang Hu , , , , , Moudy Ho Subject: [PATCH v3 3/3] media: platform: mtk-mdp3: fix error handling in mdp_probe() Date: Thu, 20 Oct 2022 15:18:00 +0800 Message-ID: <20221020071800.20487-4-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221020071800.20487-1-moudy.ho@mediatek.com> References: <20221020071800.20487-1-moudy.ho@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Adjust label "err_return" order to avoid double freeing, and add two labels for easy traceability. Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver") Signed-off-by: Moudy Ho Reviewed-by: AngeloGioacchino Del Regno --- .../media/platform/mediatek/mdp3/mtk-mdp3-core.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c index c413e59d4286..2d1f6ae9f080 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c @@ -196,27 +196,27 @@ static int mdp_probe(struct platform_device *pdev) mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_MMSYS); if (!mm_pdev) { ret = -ENODEV; - goto err_return; + goto err_destroy_device; } mdp->mdp_mmsys = &mm_pdev->dev; mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_MUTEX); if (WARN_ON(!mm_pdev)) { ret = -ENODEV; - goto err_return; + goto err_destroy_device; } for (i = 0; i < MDP_PIPE_MAX; i++) { mdp->mdp_mutex[i] = mtk_mutex_get(&mm_pdev->dev); if (!mdp->mdp_mutex[i]) { ret = -ENODEV; - goto err_return; + goto err_free_mutex; } } ret = mdp_comp_config(mdp); if (ret) { dev_err(dev, "Failed to config mdp components\n"); - goto err_return; + goto err_free_mutex; } mdp->job_wq = alloc_workqueue(MDP_MODULE_NAME, WQ_FREEZABLE, 0); @@ -287,11 +287,12 @@ static int mdp_probe(struct platform_device *pdev) destroy_workqueue(mdp->job_wq); err_deinit_comp: mdp_comp_destroy(mdp); -err_return: +err_free_mutex: for (i = 0; i < MDP_PIPE_MAX; i++) - if (mdp) - mtk_mutex_put(mdp->mdp_mutex[i]); + mtk_mutex_put(mdp->mdp_mutex[i]); +err_destroy_device: kfree(mdp); +err_return: dev_dbg(dev, "Errno %d\n", ret); return ret; }