Warnings before patch:
files: ['Documentation/networking/ip-sysctl.rst', 'include/net/dropreason-core.h', 'include/net/ipv6.h', 'include/net/netns/ipv6.h', 'net/ipv6/af_inet6.c', 'net/ipv6/exthdrs_core.c', 'net/ipv6/ip6_input.c', 'net/ipv6/ip6_tunnel.c', 'net/ipv6/sysctl_net_ipv6.c']
Warning: net/ipv6/ip6_tunnel.c:1919 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1961 No description found for return value of 'ip6_tnl_dev_init'
Warning: net/ipv6/ip6_tunnel.c:1919 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1961 No description found for return value of 'ip6_tnl_dev_init'

Current warnings:
files: ['Documentation/networking/ip-sysctl.rst', 'include/net/dropreason-core.h', 'include/net/ipv6.h', 'include/net/netns/ipv6.h', 'net/ipv6/af_inet6.c', 'net/ipv6/exthdrs_core.c', 'net/ipv6/ip6_input.c', 'net/ipv6/ip6_tunnel.c', 'net/ipv6/sysctl_net_ipv6.c']
Warning: net/ipv6/ip6_tunnel.c:1924 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1966 No description found for return value of 'ip6_tnl_dev_init'
Warning: net/ipv6/ip6_tunnel.c:1924 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1966 No description found for return value of 'ip6_tnl_dev_init'

Warnings before: 4 after: 4