From dfb80d0c3171bd46fb9515ba20320a811aee6ad2 Mon Sep 17 00:00:00 2001
From: Bernard Pidoux <bernard.pidoux@upmc.fr>
Date: Mon, 24 Nov 2008 11:49:40 +0000
Subject: [PATCH] --- yaml --- r: 119611 b: refs/heads/master c:
 244f46ae6e9e18f6fc0be7d1f49febde4762c34b h: refs/heads/master i:   119609:
 d3b32f0797da51b607a49aee8230ab89035f0359   119607:
 3de4171b3d65798c77e5abb3e5104c6f7d714e5f v: v3

---
 [refs]                   |  2 +-
 trunk/net/rose/af_rose.c | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 8d2d1ed59307..95f50512d212 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 631339f1e544a4d39a63cfe6708c5bddcd5a2c48
+refs/heads/master: 244f46ae6e9e18f6fc0be7d1f49febde4762c34b
diff --git a/trunk/net/rose/af_rose.c b/trunk/net/rose/af_rose.c
index a7f1ce11bc22..0c1cc7612800 100644
--- a/trunk/net/rose/af_rose.c
+++ b/trunk/net/rose/af_rose.c
@@ -1072,6 +1072,10 @@ static int rose_sendmsg(struct kiocb *iocb, struct socket *sock,
 	unsigned char *asmptr;
 	int n, size, qbit = 0;
 
+	/* ROSE empty 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;
 
@@ -1265,6 +1269,12 @@ static int rose_recvmsg(struct kiocb *iocb, struct socket *sock,
 	skb_reset_transport_header(skb);
 	copied     = skb->len;
 
+	/* ROSE empty frame has no meaning : ignore it */
+	if (copied == 0) {
+		skb_free_datagram(sk, skb);
+		return copied;
+	}
+
 	if (copied > size) {
 		copied = size;
 		msg->msg_flags |= MSG_TRUNC;