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:11029: warning: No description found for return value of 'nft_parse_u32_check' net/netfilter/nf_tables_api.c:11072: warning: No description found for return value of 'nft_dump_register' net/netfilter/nf_tables_api.c:11363: warning: No description found for return value of 'nft_data_init' net/netfilter/nf_tables_api.c:3091: warning: No description found for return value of 'nft_register_expr' net/netfilter/nf_tables_api.c:7597: warning: No description found for return value of 'nft_register_obj' net/netfilter/nf_tables_api.c:11031: warning: No description found for return value of 'nft_parse_u32_check' net/netfilter/nf_tables_api.c:11074: warning: No description found for return value of 'nft_dump_register' net/netfilter/nf_tables_api.c:11365: warning: No description found for return value of 'nft_data_init'