linux-kernel - [RFC PATCH V0 02/10] media: mtk-mdp3: fix redundant process done caused KE

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Message-ID: <20210623073549.24170-2-moudy.ho@mediatek.com>
Date:   Wed, 23 Jun 2021 15:35:41 +0800
From:   Moudy Ho <moudy.ho@...iatek.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Jernej Skrabec <jernej.skrabec@...l.net>
CC:     Maoguang Meng <maoguang.meng@...iatek.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        daoyuan huang <daoyuan.huang@...iatek.com>,
        Ping-Hsun Wu <ping-hsun.wu@...iatek.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Landley <rob@...dley.net>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        <linux-media@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <tfiga@...omium.org>,
        <drinkcat@...omium.org>, <acourbot@...omium.org>,
        <pihsun@...omium.org>, <menghui.lin@...iatek.com>,
        <sj.huang@...iatek.com>, <ben.lok@...iatek.com>,
        <randy.wu@...iatek.com>, <moudy.ho@...iatek.com>,
        <srv_heupstream@...iatek.com>, <frederic.chen@...iatek.com>
Subject: [RFC PATCH V0 02/10] media: mtk-mdp3: fix redundant process done caused KE

From: daoyuan huang <daoyuan.huang@...iatek.com>

In mdp_m2m_worker, there is m2m process done in error handle,
so add statement in mdp_cmdq_send for preventing redundant
process done in cmdq_pkt_flush return fail case.

Signed-off-by: daoyuan huang <daoyuan.huang@...iatek.com>
---
 drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c b/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
index ee81a3387cf9..f8bf8fde599c 100644
--- a/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
+++ b/drivers/media/platform/mtk-mdp3/mtk-mdp3-cmdq.c
@@ -454,8 +454,10 @@ int mdp_cmdq_send(struct mdp_dev *mdp, struct mdp_cmdq_param *param)
 			mdp_dump_info(~0, 1);
 		}
 #endif
-		if (param->mdp_ctx)
-			mdp_m2m_job_finish(param->mdp_ctx);
+		if (!ret) { /* error handle in mdp_m2m_worker */
+			if (param->mdp_ctx)
+				mdp_m2m_job_finish(param->mdp_ctx);
+		}
 		cmdq_pkt_destroy(cmd.pkt);
 		for (i = 0; i < param->config->num_components; i++)
 			mdp_comp_clock_off(&mdp->pdev->dev, path.comps[i].comp);
-- 
2.18.0