| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.5 142/189] drm/mediatek: Handle component type MTK_DISP_OVL_2L correctly | Date | Tue, 10 Mar 2020 13:39:39 +0100 |
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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;
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