On Gen3 platforms compositing planes are allocated by VSP on behalf of DRM/KMS. If VSP support is not compiled in, vsp1 initialization stub routine is called, leading to invalid memory accesses later on when un-initialized planes are accessed. Fail explicitly earlier if planes are not properly created. Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> --- drivers/gpu/drm/rcar-du/rcar_du_kms.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c index b5d3f16..7f56c09 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c @@ -616,6 +616,9 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu) ret = rcar_du_vsp_init(vsp); if (ret < 0) return ret; + + if (!vsp->planes) + return -EINVAL; } } -- 2.7.4
