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Message-ID: <72441e62-6dd6-4df8-add9-f6dad82d2b20@collabora.com>
Date:   Tue, 17 Oct 2023 11:50:21 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Hsiao Chien Sung <shawn.sung@...iatek.com>,
        CK Hu <ck.hu@...iatek.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>, Fei Shao <fshao@...omium.org>,
        Sean Paul <sean@...rly.run>,
        Johnson Wang <johnson.wang@...iatek.corp-partner.google.com>,
        "Nancy . Lin" <nancy.lin@...iatek.com>,
        Moudy Ho <moudy.ho@...iatek.com>,
        "Jason-JH . Lin" <jason-jh.lin@...iatek.com>,
        Nathan Lu <nathan.lu@...iatek.com>,
        Yongqiang Niu <yongqiang.niu@...iatek.com>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v8 21/23] drm/mediatek: Fix underrun in VDO1 when switches
 off the layer

Il 16/10/23 12:40, Hsiao Chien Sung ha scritto:
> Do not reset Merge while using CMDQ because reset API doesn't
> wait for frame done event as CMDQ does and could lead to
> underrun when the layer is switching off.
> 
> Fixes: aaf94f7c3ae6 ("drm/mediatek: Add display merge async reset control")
> 
> Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>


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