--- zzzz-none-000/linux-4.9.218/drivers/base/regmap/regcache.c 2020-04-02 15:20:41.000000000 +0000 +++ seale-7590ax-750/linux-4.9.218/drivers/base/regmap/regcache.c 2023-03-29 10:59:06.000000000 +0000 @@ -21,7 +21,9 @@ static const struct regcache_ops *cache_types[] = { ®cache_rbtree_ops, +#if IS_ENABLED(CONFIG_REGCACHE_COMPRESSED) ®cache_lzo_ops, +#endif ®cache_flat_ops, };