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[ Upstream commiteeda05b5e9] Add callbacks for atomic_destroy_state, atomic_duplicate_state and atomic_reset to restore functionality of the DSI driver: this solves vblank timeouts when another bridge is present in the chain. Tested bridge chain: DSI <=> ANX7625 => aux-bus panel Fixes:7f6335c6a2("drm/mediatek: Modify dsi funcs to atomic operations") Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Tested-by: Chen-Yu Tsai <wenst@chromium.org> Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Tested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com> Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20220721172727.14624-1-angelogioacchino.delregno@collabora.com/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>