Warnings before patch:
files: ['include/net/ip_tunnels.h', 'net/ipv4/ip_tunnel.c', 'net/ipv6/ip6_tunnel.c']
Warning: net/ipv6/ip6_tunnel.c:1913 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1955 No description found for return value of 'ip6_tnl_dev_init'
Warning: net/ipv6/ip6_tunnel.c:1913 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1955 No description found for return value of 'ip6_tnl_dev_init'

Current warnings:
files: ['include/net/ip_tunnels.h', 'net/ipv4/ip_tunnel.c', 'net/ipv6/ip6_tunnel.c']
Warning: net/ipv6/ip6_tunnel.c:1915 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1957 No description found for return value of 'ip6_tnl_dev_init'
Warning: net/ipv6/ip6_tunnel.c:1915 No description found for return value of 'ip6_tnl_dev_init_gen'
Warning: net/ipv6/ip6_tunnel.c:1957 No description found for return value of 'ip6_tnl_dev_init'

Warnings before: 4 after: 4