drm/mediatek: Fix underrun in VDO1 when switches off the layer

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[ Upstream commit 73b5ab27ab ]

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: aaf94f7c3a ("drm/mediatek: Add display merge async reset control")

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20231214055847.4936-23-shawn.sung@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Hsiao Chien Sung 2023-12-14 13:58:46 +08:00 • committed by Greg Kroah-Hartman

parent 993f8d7c6c

commit 37050fc054

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/mediatek/mtk_disp_merge.c

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