Re: [PATCH v2 1/2] drm/mediatek: Fix iommu fault by swapping FBs after updating plane state

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Il 09/07/23 18:26, Jason-JH.Lin ha scritto:
According to the comment in drm_atomic_helper_async_commit(),
we should make sure FBs have been swapped, so that cleanups in the
new_state performs a cleanup in the old FB.

So we should move swapping FBs after calling mtk_plane_update_new_state(),
to avoid using the old FB which could be freed.

Fixes: 1a64a7aff8da ("drm/mediatek: Fix cursor plane no update")
Signed-off-by: Jason-JH.Lin <jason-jh.lin@xxxxxxxxxxxx>

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





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