There are several common cases where code will not be executed.
Example #1: from Linux-2.6-rc3 file
net/netlink/af_netlink.c
741 int netlink_sendskb(struct sock *sk, struct
sk_buff *skb, int protocol)
742 {
743
struct netlink_sock *nlk;
744
int len = skb->len;
745
746
nlk = nlk_sk(sk);
747
748
skb_queue_tail(&sk->sk_receive_queue, skb);
749
sk->sk_data_ready(sk, len);
750
sock_put(sk);
751
return len;
752 }
nlk is set but used in the above example.
How to resolve:
Removing unneccesary code is usually
the
preferred course of action.
Caution: should be taken to make sure that the code is not referenced
by another architecture or code that is hidden by an #ifdef or other
code
