From: Phong LE ple@baylibre.com
commit 3d2ed431b8f39483477bc3c3a2aefbc9778ffe12 upstream.
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: b17bdd0d7a73 ("drm/mediatek: add component OVL_2L0")
Signed-off-by: Phong LE ple@baylibre.com Signed-off-by: CK Hu ck.hu@mediatek.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c @@ -358,6 +358,7 @@ int mtk_ddp_comp_init(struct device *dev /* 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;