ixgbe: Disallow device reset during ethtool test

Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: NJeff Garzik <jeff@garzik.org>

drivers/net/ixgbe/ixgbe_main.c

@@ -1942,6 +1942,10 @@ static int ixgbe_open(struct net_device *netdev)
 	int err;
 	u32 num_rx_queues = adapter->num_rx_queues;
 
+	/* disallow open during test */
+	if (test_bit(__IXGBE_TESTING, &adapter->state))
+		return -EBUSY;
+
 try_intr_reinit:
 	/* allocate transmit descriptors */
 	err = ixgbe_setup_all_tx_resources(adapter);