x25: '< 0' and '>= 0' test on unsigned

skb->len is an unsigned int, so the test in x25_rx_call_request() always
evaluates to true.

len in x25_sendmsg() is unsigned as well. so -ERRORS returned by x25_output()
are not noticed.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 1000e9a26fdb5355f0f89f53a65245dd9e6cd548..9ca17b1ce52e8191f04b401e2f0a1e021062badf 100644 (file)
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -951,10 +951,8 @@ int x25_rx_call_request(struct sk_buff *skb, struct x25_neigh *nb,
        /*
         *      Incoming Call User Data.
         */
-       if (skb->len >= 0) {
-               skb_copy_from_linear_data(skb, makex25->calluserdata.cuddata, skb->len);
-               makex25->calluserdata.cudlength = skb->len;
-       }
+       skb_copy_from_linear_data(skb, makex25->calluserdata.cuddata, skb->len);
+       makex25->calluserdata.cudlength = skb->len;
 
        sk->sk_ack_backlog++;
 
@@ -1122,8 +1120,9 @@ static int x25_sendmsg(struct kiocb *iocb, struct socket *sock,
        if (msg->msg_flags & MSG_OOB)
                skb_queue_tail(&x25->interrupt_out_queue, skb);
        else {
-               len = x25_output(sk, skb);
-               if (len < 0)
+               rc = x25_output(sk, skb);
+               len = rc;
+               if (rc < 0)
                        kfree_skb(skb);
                else if (x25->qbitincl)
                        len++;