ixgb: check down state before enable irq

in order to prevent the case where poll_disable is waiting
on our device to permanently, check the flag to make sure we're not
down or closing down before re-enabling interrupts.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/ixgb/ixgb_main.c b/drivers/net/ixgb/ixgb_main.c
index ec8bce154364..60cad65dbc2e 100644
--- a/drivers/net/ixgb/ixgb_main.c
+++ b/drivers/net/ixgb/ixgb_main.c
@@ -1782,7 +1782,8 @@ ixgb_clean(struct napi_struct *napi, int budget)
         /* If budget not fully consumed, exit the polling mode */
         if (work_done < budget) {
                 netif_rx_complete(netdev, napi);
-                ixgb_irq_enable(adapter);
+                if (!test_bit(__IXGB_DOWN, &adapter->flags))
+                        ixgb_irq_enable(adapter);
         }
 
         return work_done;