SPX5_PGID_FREE
if (spx5->pgid_map[i] == SPX5_PGID_FREE) {
if (spx5->pgid_map[idx] == SPX5_PGID_FREE)
spx5->pgid_map[idx] = SPX5_PGID_FREE;
spx5->pgid_map[i] = SPX5_PGID_FREE;