Merge branch 'bkl-removal' of git://git.lwn.net/linux-2.6

[mv-sheeva.git] / net / netrom / af_netrom.c

diff --git a/net/netrom/af_netrom.c b/net/netrom/af_netrom.c
index cba7849de98e26988d93bd4ee6058be4ce7f0558..6d9c58ec56ac70193adb3cddcb2ef0968ee1906c 100644 (file)
--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1037,6 +1037,10 @@ static int nr_sendmsg(struct kiocb *iocb, struct socket *sock,
        unsigned char *asmptr;
        int size;
 
+       /* Netrom empty data frame has no meaning : don't send */
+       if (len == 0)
+               return 0;
+
        if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
                return -EINVAL;
 
@@ -1167,6 +1171,11 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
        skb_reset_transport_header(skb);
        copied     = skb->len;
 
+       /* NetRom empty data frame has no meaning : ignore it */
+       if (copied == 0) {
+               goto out;
+       }
+
        if (copied > size) {
                copied = size;
                msg->msg_flags |= MSG_TRUNC;
@@ -1182,7 +1191,7 @@ static int nr_recvmsg(struct kiocb *iocb, struct socket *sock,
 
        msg->msg_namelen = sizeof(*sax);
 
-       skb_free_datagram(sk, skb);
+out:   skb_free_datagram(sk, skb);
 
        release_sock(sk);
        return copied;