Warnings before patch:
files: ['Documentation/networking/net_cachelines/tcp_sock.rst', 'include/linux/tcp.h', 'include/net/tcp.h', 'net/ipv4/tcp.c']
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:2217 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:824 No description found for return value of 'tcp_splice_read'
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:2217 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:824 No description found for return value of 'tcp_splice_read'

Current warnings:
files: ['Documentation/networking/net_cachelines/tcp_sock.rst', 'include/linux/tcp.h', 'include/net/tcp.h', 'net/ipv4/tcp.c']
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:2284 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:824 No description found for return value of 'tcp_splice_read'
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:2284 No description found for return value of 'tcp_write_queue_empty'
Warning: net/ipv4/tcp.c:824 No description found for return value of 'tcp_splice_read'

Warnings before: 8 after: 8