From patchwork Fri Sep 30 10:23:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moudy Ho X-Patchwork-Id: 12995240 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 C4302C433F5 for ; Fri, 30 Sep 2022 10:55:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232204AbiI3Kzp (ORCPT ); Fri, 30 Sep 2022 06:55:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41254 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232057AbiI3Kyz (ORCPT ); Fri, 30 Sep 2022 06:54:55 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AB615EE16; Fri, 30 Sep 2022 03:34:42 -0700 (PDT) X-UUID: 3bba1492c8d249119da9aba2240de3fe-20220930 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=5uwNZqnaq1ccbDTcWvY36ezPqqwuQtAzcWb1OYfNQLM=; b=P7az/Av8d0BbnRj5qJSFIf+6zmwLM8KbvC/bPlbvW3EYFU2Rsj8txQmAk7gsOgAp6V5IF1AhJ6J2URI5DKYNFLQ+46b9alifB+Ha9Afr9kZYl1/VD4Dy2AVA/u3q/8t/r8HtgQem92P9FEb7+Bi6DxWZ9Gkz3Ye+21LhQBKES5M=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.11,REQID:9730b829-2025-4025-9b34-cb0bf7cc0c3e,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:90 X-CID-INFO: VERSION:1.1.11,REQID:9730b829-2025-4025-9b34-cb0bf7cc0c3e,IP:0,URL :0,TC:0,Content:-5,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTIO N:quarantine,TS:90 X-CID-META: VersionHash:39a5ff1,CLOUDID:314dc8e4-87f9-4bb0-97b6-34957dc0fbbe,B ulkID:2209301823119D9J86ZH,BulkQuantity:0,Recheck:0,SF:38|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0 X-UUID: 3bba1492c8d249119da9aba2240de3fe-20220930 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 812717708; Fri, 30 Sep 2022 18:23:09 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.15; Fri, 30 Sep 2022 18:23:07 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 30 Sep 2022 18:23:07 +0800 From: Moudy Ho To: Mauro Carvalho Chehab , Matthias Brugger , Hans Verkuil CC: , , , , Moudy Ho Subject: [PATCH v1 1/2] media: platform: mtk-mdp3: fix error handling in mdp_cmdq_send() Date: Fri, 30 Sep 2022 18:23:05 +0800 Message-ID: <20220930102306.13201-2-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220930102306.13201-1-moudy.ho@mediatek.com> References: <20220930102306.13201-1-moudy.ho@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Increase and refine the goto label in mdp_cmdq_send() to avoid double free and facilitate traceability. Also, remove redundant work queue event in blocking function mdp_cmdq_send(). Fixes: 61890ccaefaf ("media: platform: mtk-mdp3: add MediaTek MDP3 driver") Signed-off-by: Moudy Ho Reviewed-by: AngeloGioacchino Del Regno --- .../platform/mediatek/mdp3/mtk-mdp3-cmdq.c | 47 ++++++++++--------- 1 file changed, 26 insertions(+), 21 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c index 86c054600a08..e194dec8050a 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c @@ -252,10 +252,9 @@ static int mdp_cmdq_pkt_create(struct cmdq_client *client, struct cmdq_pkt *pkt, dma_addr_t dma_addr; pkt->va_base = kzalloc(size, GFP_KERNEL); - if (!pkt->va_base) { - kfree(pkt); + if (!pkt->va_base) return -ENOMEM; - } + pkt->buf_size = size; pkt->cl = (void *)client; @@ -368,25 +367,30 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param) cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); if (!cmd) { ret = -ENOMEM; - goto err_cmdq_data; + goto err_cancel_job; } - if (mdp_cmdq_pkt_create(mdp->cmdq_clt, &cmd->pkt, SZ_16K)) { - ret = -ENOMEM; - goto err_cmdq_data; - } + ret = mdp_cmdq_pkt_create(mdp->cmdq_clt, &cmd->pkt, SZ_16K); + if (ret) + goto err_free_cmd; comps = kcalloc(param->config->num_components, sizeof(*comps), GFP_KERNEL); if (!comps) { ret = -ENOMEM; - goto err_cmdq_data; + goto err_destroy_pkt; } path = kzalloc(sizeof(*path), GFP_KERNEL); if (!path) { ret = -ENOMEM; - goto err_cmdq_data; + goto err_free_comps; + } + + ret = mtk_mutex_prepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]); + if (ret) { + dev_err(dev, "Fail to enable mutex clk\n"); + goto err_free_path; } path->mdp_dev = mdp; @@ -406,15 +410,13 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param) ret = mdp_path_ctx_init(mdp, path); if (ret) { dev_err(dev, "mdp_path_ctx_init error\n"); - goto err_cmdq_data; + goto err_free_path; } - mtk_mutex_prepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]); - ret = mdp_path_config(mdp, cmd, path); if (ret) { dev_err(dev, "mdp_path_config error\n"); - goto err_cmdq_data; + goto err_free_path; } cmdq_pkt_finalize(&cmd->pkt); @@ -433,7 +435,7 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param) ret = mdp_comp_clocks_on(&mdp->pdev->dev, cmd->comps, cmd->num_comps); if (ret) { dev_err(dev, "comp %d failed to enable clock!\n", ret); - goto err_clock_off; + goto err_free_path; } dma_sync_single_for_device(mdp->cmdq_clt->chan->mbox->dev, @@ -450,17 +452,20 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param) return 0; err_clock_off: - mtk_mutex_unprepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]); mdp_comp_clocks_off(&mdp->pdev->dev, cmd->comps, cmd->num_comps); -err_cmdq_data: +err_free_path: + mtk_mutex_unprepare(mdp->mdp_mutex[MDP_PIPE_RDMA0]); kfree(path); - atomic_dec(&mdp->job_count); - wake_up(&mdp->callback_wq); - if (cmd && cmd->pkt.buf_size > 0) - mdp_cmdq_pkt_destroy(&cmd->pkt); +err_free_comps: kfree(comps); +err_destroy_pkt: + mdp_cmdq_pkt_destroy(&cmd->pkt); +err_free_cmd: kfree(cmd); +err_cancel_job: + atomic_dec(&mdp->job_count); + return ret; } EXPORT_SYMBOL_GPL(mdp_cmdq_send);