net/ipv4/igmp.c:1700: warning: No description found for return value of 'ip_mc_check_igmp'
net/ipv6/addrconf.c:2080: warning: No description found for return value of 'ipv6_dev_find'
net/ipv4/igmp.c:1702: warning: No description found for return value of 'ip_mc_check_igmp'
net/ipv6/addrconf.c:2080: warning: No description found for return value of 'ipv6_dev_find'