Warnings before patch:
files: ['include/net/dst_metadata.h', 'include/net/tcp.h', 'net/ipv6/reassembly.c', 'include/net/dst.h', 'include/linux/skbuff.h', 'net/ieee802154/6lowpan/reassembly.c', 'net/core/pktgen.c', 'net/ipv4/ip_fragment.c', 'net/sched/sch_frag.c', 'net/ipv4/ip_options.c', 'net/ipv6/netfilter/nf_conntrack_reasm.c', 'net/ipv4/icmp.c', 'net/openvswitch/actions.c', 'net/openvswitch/datapath.h']
Warning: include/linux/skbuff.h:371 No description found for return value of 'skb_frag_size'
Warning: include/linux/skbuff.h:410 No description found for return value of 'skb_frag_must_loop'
Warning: include/linux/skbuff.h:1139 No description found for return value of 'skb_pfmemalloc'
Warning: include/linux/skbuff.h:1244 No description found for return value of 'skb_dst_is_noref'
Warning: include/linux/skbuff.h:1262 No description found for return value of 'skb_napi_id'
Warning: include/linux/skbuff.h:1381 No description found for return value of 'alloc_skb'
Warning: include/linux/skbuff.h:1431 No description found for return value of 'alloc_skb_fclone'
Warning: include/linux/skbuff.h:1474 No description found for return value of 'skb_pad'
Warning: include/linux/skbuff.h:1924 No description found for return value of 'skb_queue_empty'
Warning: include/linux/skbuff.h:1936 No description found for return value of 'skb_queue_empty_lockless'
Warning: include/linux/skbuff.h:1950 No description found for return value of 'skb_queue_is_last'
Warning: include/linux/skbuff.h:1963 No description found for return value of 'skb_queue_is_first'
Warning: include/linux/skbuff.h:1977 No description found for return value of 'skb_queue_next'
Warning: include/linux/skbuff.h:1995 No description found for return value of 'skb_queue_prev'
Warning: include/linux/skbuff.h:2011 No description found for return value of 'skb_get'
Warning: include/linux/skbuff.h:2029 No description found for return value of 'skb_cloned'
Warning: include/linux/skbuff.h:2068 No description found for return value of 'skb_header_cloned'
Warning: include/linux/skbuff.h:2110 No description found for return value of 'skb_shared'
Warning: include/linux/skbuff.h:2128 No description found for return value of 'skb_share_check'
Warning: include/linux/skbuff.h:2164 No description found for return value of 'skb_unshare'
Warning: include/linux/skbuff.h:2193 No description found for return value of 'skb_peek'
Warning: include/linux/skbuff.h:2208 No description found for return value of '__skb_peek'
Warning: include/linux/skbuff.h:2223 No description found for return value of 'skb_peek_next'
Warning: include/linux/skbuff.h:2245 No description found for return value of 'skb_peek_tail'
Warning: include/linux/skbuff.h:2261 No description found for return value of 'skb_queue_len'
Warning: include/linux/skbuff.h:2273 No description found for return value of 'skb_queue_len_lockless'
Warning: include/linux/skbuff.h:2499 No description found for return value of '__skb_dequeue'
Warning: include/linux/skbuff.h:2516 No description found for return value of '__skb_dequeue_tail'
Warning: include/linux/skbuff.h:2886 No description found for return value of 'skb_headroom'
Warning: include/linux/skbuff.h:2897 No description found for return value of 'skb_tailroom'
Warning: include/linux/skbuff.h:2909 No description found for return value of 'skb_availroom'
Warning: include/linux/skbuff.h:3393 No description found for return value of 'skb_orphan_frags'
Warning: include/linux/skbuff.h:3453 No description found for return value of 'netdev_alloc_frag'
Warning: include/linux/skbuff.h:3482 No description found for return value of 'netdev_alloc_skb'
Warning: include/linux/skbuff.h:3552 No description found for return value of '__dev_alloc_pages'
Warning: include/linux/skbuff.h:3582 No description found for return value of '__dev_alloc_page'
Warning: include/linux/skbuff.h:3626 No description found for return value of 'skb_frag_off'
Warning: include/linux/skbuff.h:3778 No description found for return value of '__skb_frag_dma_map'
Warning: include/linux/skbuff.h:3831 No description found for return value of 'skb_clone_writable'
Warning: include/linux/skbuff.h:3870 No description found for return value of 'skb_cow'
Warning: include/linux/skbuff.h:3885 No description found for return value of 'skb_cow_head'
Warning: include/linux/skbuff.h:3900 No description found for return value of 'skb_padto'
Warning: include/linux/skbuff.h:3921 No description found for return value of '__skb_put_padto'
Warning: include/linux/skbuff.h:3944 No description found for return value of 'skb_put_padto'
Warning: include/linux/skbuff.h:3984 No description found for return value of 'skb_linearize'
Warning: include/linux/skbuff.h:4009 No description found for return value of 'skb_linearize_cow'
Warning: include/linux/skbuff.h:4085 No description found for return value of 'skb_push_rcsum'
Warning: include/linux/skbuff.h:4103 No description found for return value of 'pskb_trim_rcsum'
Warning: include/linux/skbuff.h:4323 No description found for return value of 'skb_needs_linearize'
Warning: include/linux/skbuff.h:4750 No description found for return value of 'skb_checksum_complete'
Warning: include/linux/skbuff.h:5320 No description found for return value of 'skb_head_is_locked'
Warning: include/net/dst.h:331 No description found for return value of 'dst_hold_safe'
Warning: include/net/tcp.h:2156 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/icmp.c:233 No description found for return value of 'icmp_global_allow'

Current warnings:
files: ['include/net/dst_metadata.h', 'include/net/tcp.h', 'net/ipv6/reassembly.c', 'include/net/dst.h', 'include/linux/skbuff.h', 'net/ieee802154/6lowpan/reassembly.c', 'net/core/pktgen.c', 'net/ipv4/ip_fragment.c', 'net/sched/sch_frag.c', 'net/ipv4/ip_options.c', 'net/ipv6/netfilter/nf_conntrack_reasm.c', 'net/ipv4/icmp.c', 'net/openvswitch/actions.c', 'net/openvswitch/datapath.h']
Warning: include/linux/skbuff.h:372 No description found for return value of 'skb_frag_size'
Warning: include/linux/skbuff.h:411 No description found for return value of 'skb_frag_must_loop'
Warning: include/linux/skbuff.h:1140 No description found for return value of 'skb_pfmemalloc'
Warning: include/linux/skbuff.h:1225 No description found for return value of 'skb_dst_is_noref'
Warning: include/linux/skbuff.h:1243 No description found for return value of 'skb_napi_id'
Warning: include/linux/skbuff.h:1362 No description found for return value of 'alloc_skb'
Warning: include/linux/skbuff.h:1412 No description found for return value of 'alloc_skb_fclone'
Warning: include/linux/skbuff.h:1455 No description found for return value of 'skb_pad'
Warning: include/linux/skbuff.h:1905 No description found for return value of 'skb_queue_empty'
Warning: include/linux/skbuff.h:1917 No description found for return value of 'skb_queue_empty_lockless'
Warning: include/linux/skbuff.h:1931 No description found for return value of 'skb_queue_is_last'
Warning: include/linux/skbuff.h:1944 No description found for return value of 'skb_queue_is_first'
Warning: include/linux/skbuff.h:1958 No description found for return value of 'skb_queue_next'
Warning: include/linux/skbuff.h:1976 No description found for return value of 'skb_queue_prev'
Warning: include/linux/skbuff.h:1992 No description found for return value of 'skb_get'
Warning: include/linux/skbuff.h:2010 No description found for return value of 'skb_cloned'
Warning: include/linux/skbuff.h:2049 No description found for return value of 'skb_header_cloned'
Warning: include/linux/skbuff.h:2091 No description found for return value of 'skb_shared'
Warning: include/linux/skbuff.h:2109 No description found for return value of 'skb_share_check'
Warning: include/linux/skbuff.h:2145 No description found for return value of 'skb_unshare'
Warning: include/linux/skbuff.h:2174 No description found for return value of 'skb_peek'
Warning: include/linux/skbuff.h:2189 No description found for return value of '__skb_peek'
Warning: include/linux/skbuff.h:2204 No description found for return value of 'skb_peek_next'
Warning: include/linux/skbuff.h:2226 No description found for return value of 'skb_peek_tail'
Warning: include/linux/skbuff.h:2242 No description found for return value of 'skb_queue_len'
Warning: include/linux/skbuff.h:2254 No description found for return value of 'skb_queue_len_lockless'
Warning: include/linux/skbuff.h:2480 No description found for return value of '__skb_dequeue'
Warning: include/linux/skbuff.h:2497 No description found for return value of '__skb_dequeue_tail'
Warning: include/linux/skbuff.h:2867 No description found for return value of 'skb_headroom'
Warning: include/linux/skbuff.h:2878 No description found for return value of 'skb_tailroom'
Warning: include/linux/skbuff.h:2890 No description found for return value of 'skb_availroom'
Warning: include/linux/skbuff.h:3374 No description found for return value of 'skb_orphan_frags'
Warning: include/linux/skbuff.h:3434 No description found for return value of 'netdev_alloc_frag'
Warning: include/linux/skbuff.h:3463 No description found for return value of 'netdev_alloc_skb'
Warning: include/linux/skbuff.h:3533 No description found for return value of '__dev_alloc_pages'
Warning: include/linux/skbuff.h:3563 No description found for return value of '__dev_alloc_page'
Warning: include/linux/skbuff.h:3607 No description found for return value of 'skb_frag_off'
Warning: include/linux/skbuff.h:3759 No description found for return value of '__skb_frag_dma_map'
Warning: include/linux/skbuff.h:3812 No description found for return value of 'skb_clone_writable'
Warning: include/linux/skbuff.h:3851 No description found for return value of 'skb_cow'
Warning: include/linux/skbuff.h:3866 No description found for return value of 'skb_cow_head'
Warning: include/linux/skbuff.h:3881 No description found for return value of 'skb_padto'
Warning: include/linux/skbuff.h:3902 No description found for return value of '__skb_put_padto'
Warning: include/linux/skbuff.h:3925 No description found for return value of 'skb_put_padto'
Warning: include/linux/skbuff.h:3965 No description found for return value of 'skb_linearize'
Warning: include/linux/skbuff.h:3990 No description found for return value of 'skb_linearize_cow'
Warning: include/linux/skbuff.h:4066 No description found for return value of 'skb_push_rcsum'
Warning: include/linux/skbuff.h:4084 No description found for return value of 'pskb_trim_rcsum'
Warning: include/linux/skbuff.h:4304 No description found for return value of 'skb_needs_linearize'
Warning: include/linux/skbuff.h:4731 No description found for return value of 'skb_checksum_complete'
Warning: include/linux/skbuff.h:5301 No description found for return value of 'skb_head_is_locked'
Warning: include/net/dst.h:321 No description found for return value of 'dst_hold_safe'
Warning: include/net/tcp.h:2155 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/icmp.c:233 No description found for return value of 'icmp_global_allow'

Warnings before: 54 after: 54