[PATCH v9 3/7] drm/mediatek: Fix using wrong drm private data to bind mediatek-drm

[Fei Shao]

On Thu, Aug 10, 2023 at 2:15 AM Jason-JH.Lin <jason-jh.lin at mediatek.com> wrote:
>
> According to mtk_drm_kms_init(), the all_drm_private array in each
> drm private data stores all drm private data in display path order.
>
> In mtk_drm_get_all_drm_priv(), each element in all_drm_priv should have one
> display path private data, such as:
> all_drm_priv[CRTC_MAIN] should only have main_path data
> all_drm_priv[CRTC_EXT] should only have ext_path data
> all_drm_priv[CRTC_THIRD] should only have third_path data
>
> So we need to add the length checking for each display path before
> assigning their drm private data into all_drm_priv array.
>
> Then the all_drm_private array in each drm private data needs to be
> assigned in their display path order.
>
> Fixes: 1ef7ed48356c ("drm/mediatek: Modify mediatek-drm for mt8195 multi mmsys support")
> Signed-off-by: Jason-JH.Lin <jason-jh.lin at mediatek.com>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> Reviewed-by: CK Hu <ck.hu at mediatek.com>

Tested-by: Fei Shao <fshao at chromium.org>