drm/mediatek: Turn off the layers with zero width or height

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We found that IGT (Intel GPU Tool) will try to commit layers with
zero width or height and lead to undefined behaviors in hardware.
Disable the layers in such a situation.

Fixes: 453c336463 ("drm/mediatek: Add ovl_adaptor support for MT8195")
Fixes: d886c0009b ("drm/mediatek: Add ETHDR support for MT8195")
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Fixes: 119f517362 ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsiao Chien Sung <shawn.sung@mediatek.com>
Link: https://patchwork.kernel.org/project/dri-devel/patch/20240620-igt-v3-6-a9d62d2e2c7e@mediatek.com/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

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This commit is contained in:

Hsiao Chien Sung 2024-06-20 00:38:46 +08:00 • committed by Chun-Kuang Hu

parent 31c0fbf67c

commit 6b9946f455

2 changed files with 7 additions and 2 deletions

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2

drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c

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7

drivers/gpu/drm/mediatek/mtk_ethdr.c

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