linux-kernel - [ 59/66] netback: correct netbk_tx

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Message-Id: <20130217225008.498347835@decadent.org.uk>
Date:	Sun, 17 Feb 2013 22:51:00 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	akpm@...ux-foundation.org, Ian Campbell <Ian.Campbell@...rix.com>,
	Ian Campbell <ian.campbell@...rix.com>,
	Jan Beulich <JBeulich@...e.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 59/66] netback: correct netbk_tx_err to handle wrap around.

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ian Campbell <Ian.Campbell@...rix.com>

[ Upstream commit b9149729ebdcfce63f853aa54a404c6a8f6ebbf3 ]

Signed-off-by: Ian Campbell <ian.campbell@...rix.com>
Acked-by: Jan Beulich <JBeulich@...e.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/xen-netback/netback.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c
index a14b3a2..b802bb3 100644
--- a/drivers/net/xen-netback/netback.c
+++ b/drivers/net/xen-netback/netback.c
@@ -852,7 +852,7 @@ static void netbk_tx_err(struct xenvif *vif,
 
 	do {
 		make_tx_response(vif, txp, XEN_NETIF_RSP_ERROR);
-		if (cons >= end)
+		if (cons == end)
 			break;
 		txp = RING_GET_REQUEST(&vif->tx, cons++);
 	} while (1);


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