[NET]: Transform skb_queue_len() binary tests into skb_queue_empty()

This is part of the grand scheme to eliminate the qlen
member of skb_queue_head, and subsequently remove the
'list' member of sk_buff.

Most users of skb_queue_len() want to know if the queue is
empty or not, and that's trivially done with skb_queue_empty()
which doesn't use the skb_queue_head->qlen member and instead
uses the queue list emptyness as the test.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index f3f6355a278..63a123c5c41 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -590,8 +590,11 @@ static long rfcomm_sock_data_wait(struct sock *sk, long timeo)
         for (;;) {
                 set_current_state(TASK_INTERRUPTIBLE);
 
-                if (skb_queue_len(&sk->sk_receive_queue) || sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN) ||
-                                signal_pending(current) || !timeo)
+                if (!skb_queue_empty(&sk->sk_receive_queue) ||
+                    sk->sk_err ||
+                    (sk->sk_shutdown & RCV_SHUTDOWN) ||
+                    signal_pending(current) ||
+                    !timeo)
                         break;
 
                 set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);