[PATCH net-next] ibmvnic: Return from ibmvnic_resume if not in VNIC_OPEN state

[John Allen]

If the ibmvnic driver is not in the VNIC_OPEN state, return from
ibmvnic_resume callback. If we are not in the VNIC_OPEN state, interrupts
may not be initialized and directly calling the interrupt handler will
cause a crash.

Signed-off-by: John Allen <jal...@linux.vnet.ibm.com>
---
diff --git a/drivers/net/ethernet/ibm/ibmvnic.c 
b/drivers/net/ethernet/ibm/ibmvnic.c
index 722daf5..0135095 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -3859,6 +3859,9 @@ static int ibmvnic_resume(struct device *dev)
        struct ibmvnic_adapter *adapter = netdev_priv(netdev);
        int i;

+       if (adapter->state != VNIC_OPEN)
+               return 0;
+
        /* kick the interrupt handlers just in case we lost an interrupt */
        for (i = 0; i < adapter->req_rx_queues; i++)
                ibmvnic_interrupt_rx(adapter->rx_scrq[i]->irq,