Commit 3d2ed431 authored Feb 19, 2020 by Phong LE Committed by CK Hu Feb 25, 2020

drm/mediatek: Handle component type MTK_DISP_OVL_2L correctly



The larb device remains NULL if the type is MTK_DISP_OVL_2L.
A kernel panic is raised when a crtc uses mtk_smi_larb_get or
mtk_smi_larb_put.

Fixes: b17bdd0d ("drm/mediatek: add component OVL_2L0")

Signed-off-by: Phong LE <ple@baylibre.com>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

parent 839cbf05

drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -471,6 +471,7 @@ int mtk_ddp_comp_init(struct device dev, struct device_node node,
		/* Only DMA capable components need the LARB property */
		comp->larb_dev = NULL;
		if (type != MTK_DISP_OVL &&
		type != MTK_DISP_OVL_2L &&
		type != MTK_DISP_RDMA &&
		type != MTK_DISP_WDMA)
		return 0;

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