netback: correct netbk_tx_err to handle wrap around.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jan Beulich <JBeulich@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ian Campbell 2013-02-06 23:41:38 +00:00 committed by David S. Miller
parent 4cc7c1cb7b
commit b9149729eb

View File

@ -880,7 +880,7 @@ 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);