net/netfilter/nf_tables_api.c:3089: warning: No description found for return value of 'nft_register_expr' net/netfilter/nf_tables_api.c:7590: warning: No description found for return value of 'nft_register_obj' net/netfilter/nf_tables_api.c:11021: warning: No description found for return value of 'nft_parse_u32_check' net/netfilter/nf_tables_api.c:11064: warning: No description found for return value of 'nft_dump_register' net/netfilter/nf_tables_api.c:11355: warning: No description found for return value of 'nft_data_init' net/netfilter/nf_tables_api.c:3089: warning: No description found for return value of 'nft_register_expr' net/netfilter/nf_tables_api.c:7595: warning: No description found for return value of 'nft_register_obj' net/netfilter/nf_tables_api.c:11026: warning: No description found for return value of 'nft_parse_u32_check' net/netfilter/nf_tables_api.c:11069: warning: No description found for return value of 'nft_dump_register' net/netfilter/nf_tables_api.c:11360: warning: No description found for return value of 'nft_data_init'