to_kplane_st
struct komeda_plane_state *new = to_kplane_st(plane_st);
if (to_kplane_st(plane_st)->layer_split)
if (to_kplane_st(plane_st)->layer_split)
kfree(to_kplane_st(state));
struct komeda_plane_state *kplane_st = to_kplane_st(new_plane_state);