net/xfrm/xfrm_iptfs.c:921: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:1272: warning: No description found for return value of 'iptfs_drop_timer'
net/xfrm/xfrm_iptfs.c:1653: warning: No description found for return value of 'iptfs_drop_timer'