From patchwork Mon Oct 3 07:08:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moudy Ho X-Patchwork-Id: 12997117 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 34FBBC4332F for ; Mon, 3 Oct 2022 07:08:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229604AbiJCHIo (ORCPT ); Mon, 3 Oct 2022 03:08:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229730AbiJCHIm (ORCPT ); Mon, 3 Oct 2022 03:08:42 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04A48357C4; Mon, 3 Oct 2022 00:08:37 -0700 (PDT) X-UUID: 7eb411ed16584bf38de737cba27ffe54-20221003 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=09fqyA4k2RD8tjkCxo1wu/f6mjLilCjhB+OIWkZxcCk=; b=pdHklJ7e4BlpKTKYLgwRuKPwsHhN6F1lK0pS5BkMbIZ5k4FuzsKpJGa18DO5woK3MU0QifAZNgGp7/8Od6eof7rsugmWhTe5NOQueGkLdQPukvjZlGr8tYLg7fG7rBwh04+OuApv808Hqz3LnBYhIx3lfSNXvW5sV9sr1ttr8IU=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.11,REQID:77a62928-1370-47bc-9f76-0c336526adb2,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:39a5ff1,CLOUDID:816cd6a3-dc04-435c-b19b-71e131a5fc35,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: 7eb411ed16584bf38de737cba27ffe54-20221003 Received: from mtkexhb02.mediatek.inc [(172.21.101.103)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 896215015; Mon, 03 Oct 2022 15:08:33 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 3 Oct 2022 15:08:31 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 3 Oct 2022 15:08:31 +0800 From: Moudy Ho To: Mauro Carvalho Chehab , Matthias Brugger , Hans Verkuil CC: Chun-Kuang Hu , , , , , Moudy Ho Subject: [PATCH v2 1/2] media: platform: mtk-mdp3: fix error handling in mdp_cmdq_send() Date: Mon, 3 Oct 2022 15:08:29 +0800 Message-ID: <20221003070830.23697-2-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221003070830.23697-1-moudy.ho@mediatek.com> References: <20221003070830.23697-1-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); From patchwork Mon Oct 3 07:08:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moudy Ho X-Patchwork-Id: 12997118 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 3CAA0C433F5 for ; Mon, 3 Oct 2022 07:08:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229743AbiJCHIp (ORCPT ); Mon, 3 Oct 2022 03:08:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229542AbiJCHIo (ORCPT ); Mon, 3 Oct 2022 03:08:44 -0400 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 655B0357CB; Mon, 3 Oct 2022 00:08:39 -0700 (PDT) X-UUID: 8c8bfd03c1494ae68241001d4bdd836d-20221003 DKIM-Signature: v=1; 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Mon, 03 Oct 2022 15:08:33 +0800 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Mon, 3 Oct 2022 15:08:32 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 3 Oct 2022 15:08:32 +0800 From: Moudy Ho To: Mauro Carvalho Chehab , Matthias Brugger , Hans Verkuil CC: Chun-Kuang Hu , , , , , Moudy Ho Subject: [PATCH v2 2/2] media: platform: mtk-mdp3: fix error handling about components clock_on Date: Mon, 3 Oct 2022 15:08:30 +0800 Message-ID: <20221003070830.23697-3-moudy.ho@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20221003070830.23697-1-moudy.ho@mediatek.com> References: <20221003070830.23697-1-moudy.ho@mediatek.com> MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add goto statement in mdp_comp_clock_on() to avoid error code not being propagated or returning positive values. This change also performs a well-timed clock_off when an error occurs, and reduces unnecessary error logging in 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 | 4 +--- .../platform/mediatek/mdp3/mtk-mdp3-comp.c | 24 ++++++++++++++----- 2 files changed, 19 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c index e194dec8050a..124c1b96e96b 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-cmdq.c @@ -433,10 +433,8 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param) cmd->mdp_ctx = param->mdp_ctx; 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); + if (ret) goto err_free_path; - } dma_sync_single_for_device(mdp->cmdq_clt->chan->mbox->dev, cmd->pkt.pa_base, cmd->pkt.cmd_buf_size, diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c index d3eaf8884412..7bc05f42a23c 100644 --- a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-comp.c @@ -699,12 +699,22 @@ int mdp_comp_clock_on(struct device *dev, struct mdp_comp *comp) dev_err(dev, "Failed to enable clk %d. type:%d id:%d\n", i, comp->type, comp->id); - pm_runtime_put(comp->comp_dev); - return ret; + goto err_revert; } } return 0; + +err_revert: + while (--i >= 0) { + if (IS_ERR_OR_NULL(comp->clks[i])) + continue; + clk_disable_unprepare(comp->clks[i]); + } + if (comp->comp_dev) + pm_runtime_put_sync(comp->comp_dev); + + return ret; } void mdp_comp_clock_off(struct device *dev, struct mdp_comp *comp) @@ -723,11 +733,13 @@ void mdp_comp_clock_off(struct device *dev, struct mdp_comp *comp) int mdp_comp_clocks_on(struct device *dev, struct mdp_comp *comps, int num) { - int i; + int i, ret; - for (i = 0; i < num; i++) - if (mdp_comp_clock_on(dev, &comps[i]) != 0) - return ++i; + for (i = 0; i < num; i++) { + ret = mdp_comp_clock_on(dev, &comps[i]); + if (ret) + return ret; + } return 0; }