From: Maxime Ripard Date: Sun, 17 Dec 2017 17:32:21 +0100 Subject: drm/sun4i: backend: Set a default zpos in our reset hook Git-commit: 2bebcc4564470b03b0220bdc6836bbead750e875 Patch-mainline: v4.17-rc1 References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166 The plane state zpos value will be set only if there's an existing state attached to the plane when creating the property. However, this is not the case during the probe, and we therefore need to put our default value in our reset hook. Acked-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Link: https://patchwork.freedesktop.org/patch/msgid/b6a183234f0ad5a9a58c780c9cabbe29cbf40888.1516617243.git-series.maxime.ripard@free-electrons.com Acked-by: Petr Tesarik --- drivers/gpu/drm/sun4i/sun4i_layer.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/sun4i/sun4i_layer.c +++ b/drivers/gpu/drm/sun4i/sun4i_layer.c @@ -28,6 +28,7 @@ struct sun4i_plane_desc { static void sun4i_backend_layer_reset(struct drm_plane *plane) { + struct sun4i_layer *layer = plane_to_sun4i_layer(plane); struct sun4i_layer_state *state; if (plane->state) { @@ -43,6 +44,7 @@ static void sun4i_backend_layer_reset(st if (state) { plane->state = &state->state; plane->state->plane = plane; + plane->state->zpos = layer->id; } }