Warnings before patch:
files: ['Documentation/networking/net_cachelines/tcp_sock.rst', 'include/linux/tcp.h', 'include/net/tcp.h', 'net/ipv4/tcp.c', 'net/ipv4/tcp_fastopen.c', 'net/ipv4/tcp_input.c', 'net/ipv4/tcp_minisocks.c', 'net/ipv4/tcp_output.c', 'tools/testing/selftests/net/packetdrill/tcp_rcv_big_endseq.pkt']
Warning: include/linux/tcp.h:59 No description found for return value of 'skb_tcp_all_headers'
Warning: include/linux/tcp.h:74 No description found for return value of 'skb_inner_tcp_all_headers'
Warning: include/net/tcp.h:2212 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:823 No description found for return value of 'tcp_splice_read'
Warning: net/ipv4/tcp_input.c:5258 No description found for return value of 'tcp_try_coalesce'
Warning: net/ipv4/tcp_output.c:3956 No description found for return value of 'tcp_make_synack'
Warning: include/linux/tcp.h:59 No description found for return value of 'skb_tcp_all_headers'
Warning: include/linux/tcp.h:74 No description found for return value of 'skb_inner_tcp_all_headers'
Warning: include/net/tcp.h:2212 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:823 No description found for return value of 'tcp_splice_read'
Warning: net/ipv4/tcp_input.c:5258 No description found for return value of 'tcp_try_coalesce'
Warning: net/ipv4/tcp_output.c:3956 No description found for return value of 'tcp_make_synack'

Current warnings:
files: ['Documentation/networking/net_cachelines/tcp_sock.rst', 'include/linux/tcp.h', 'include/net/tcp.h', 'net/ipv4/tcp.c', 'net/ipv4/tcp_fastopen.c', 'net/ipv4/tcp_input.c', 'net/ipv4/tcp_minisocks.c', 'net/ipv4/tcp_output.c', 'tools/testing/selftests/net/packetdrill/tcp_rcv_big_endseq.pkt']
Warning: include/linux/tcp.h:59 No description found for return value of 'skb_tcp_all_headers'
Warning: include/linux/tcp.h:74 No description found for return value of 'skb_inner_tcp_all_headers'
Warning: include/net/tcp.h:2225 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:823 No description found for return value of 'tcp_splice_read'
Warning: net/ipv4/tcp_input.c:5258 No description found for return value of 'tcp_try_coalesce'
Warning: net/ipv4/tcp_output.c:3967 No description found for return value of 'tcp_make_synack'
Warning: include/linux/tcp.h:59 No description found for return value of 'skb_tcp_all_headers'
Warning: include/linux/tcp.h:74 No description found for return value of 'skb_inner_tcp_all_headers'
Warning: include/net/tcp.h:2225 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:823 No description found for return value of 'tcp_splice_read'
Warning: net/ipv4/tcp_input.c:5258 No description found for return value of 'tcp_try_coalesce'
Warning: net/ipv4/tcp_output.c:3967 No description found for return value of 'tcp_make_synack'

Warnings before: 12 after: 12