include/linux/tcp.h:61: warning: No description found for return value of 'skb_tcp_all_headers' include/linux/tcp.h:76: warning: No description found for return value of 'skb_inner_tcp_all_headers' net/ipv4/tcp_input.c:4850: warning: No description found for return value of 'tcp_try_coalesce' include/linux/tcp.h:61: warning: No description found for return value of 'skb_tcp_all_headers' include/linux/tcp.h:76: warning: No description found for return value of 'skb_inner_tcp_all_headers' net/ipv4/tcp_input.c:4850: warning: No description found for return value of 'tcp_try_coalesce'