[NETLINK]: Make netlink_callback->done() optional
Most netlink families make no use of the done() callback, making
it optional gets rid of all unnecessary dummy implementations.
Signed-off-by: Thomas Graf <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 5ca2835..f3fb7e5 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -427,7 +427,8 @@
spin_lock(&nlk->cb_lock);
if (nlk->cb) {
- nlk->cb->done(nlk->cb);
+ if (nlk->cb->done)
+ nlk->cb->done(nlk->cb);
netlink_destroy_callback(nlk->cb);
nlk->cb = NULL;
}
@@ -1322,7 +1323,8 @@
skb_queue_tail(&sk->sk_receive_queue, skb);
sk->sk_data_ready(sk, skb->len);
- cb->done(cb);
+ if (cb->done)
+ cb->done(cb);
nlk->cb = NULL;
spin_unlock(&nlk->cb_lock);
