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    SubjectRe: [PATCH v6 1/9] drm/omap: add sanity plane state check
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    On 18/10/2021 17:28, Neil Armstrong wrote:
    > Call drm_atomic_helper_check_plane_state() from the plane
    > atomic_check() callback in order to add plane state sanity
    > checking.
    >
    > It will permit filtering out totally bad scaling factors, even
    > if the real check are done later in the atomic commit.

    I think there's more to it: the function sets plane_state->visible,
    which is used in later patches.

    Tomi

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