xen-netfront: fix oops when disconnected from backend
xennet_disconnect_backend() was not correctly iterating over all the
queues.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 5a7872a..daaf1e5 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -1287,7 +1287,7 @@
if (likely(netif_carrier_ok(dev) &&
RING_HAS_UNCONSUMED_RESPONSES(&queue->rx)))
- napi_schedule(&queue->napi);
+ napi_schedule(&queue->napi);
return IRQ_HANDLED;
}
@@ -1437,10 +1437,11 @@
static void xennet_disconnect_backend(struct netfront_info *info)
{
unsigned int i = 0;
- struct netfront_queue *queue = NULL;
unsigned int num_queues = info->netdev->real_num_tx_queues;
for (i = 0; i < num_queues; ++i) {
+ struct netfront_queue *queue = &info->queues[i];
+
/* Stop old i/f to prevent errors whilst we rebuild the state. */
spin_lock_bh(&queue->rx_lock);
spin_lock_irq(&queue->tx_lock);