linux-kernel - [ 30/36] netback: correct netbk_tx

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Message-Id: <20130212203900.813634541@linuxfoundation.org>
Date:	Tue, 12 Feb 2013 12:41:24 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Ian Campbell <ian.campbell@...rix.com>,
	Jan Beulich <JBeulich@...e.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: [ 30/36] netback: correct netbk_tx_err to handle wrap around.

3.4-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: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/xen-netback/netback.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- 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 *
 
 	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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