[PATCH v3 1/2] drm/mediatek: fix kernel oops if no crtc is found

[AngeloGioacchino Del Regno]

Il 01/09/23 19:45, Michael Walle ha scritto:
> drm_crtc_from_index(0) might return NULL if there are no CRTCs
> registered at all which will lead to a kernel oops in
> mtk_drm_crtc_dma_dev_get(). Add the missing return value check.
> 
> Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
> Signed-off-by: Michael Walle <mwalle at kernel.org>
> Reviewed-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>
> Tested-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>