net/ipv4/devinet.c:153: warning: No description found for return value of '__ip_dev_find'
net/ipv4/igmp.c:1701: warning: No description found for return value of 'ip_mc_check_igmp'
net/ipv4/devinet.c:154: warning: No description found for return value of '__ip_dev_find'
net/ipv4/igmp.c:1697: warning: No description found for return value of 'ip_mc_check_igmp'