[PATCH net-next] ibmvnic: Bail from ibmvnic_open if driver is already open

[John Allen]

If the driver is already in the "open" state, don't attempt the procedure
for opening the driver.

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 7be4b06..98c4f75 100644
--- a/drivers/net/ethernet/ibm/ibmvnic.c
+++ b/drivers/net/ethernet/ibm/ibmvnic.c
@@ -1057,6 +1057,9 @@ static int ibmvnic_open(struct net_device *netdev)

        mutex_lock(&adapter->reset_lock);

+       if (adapter->state == VNIC_OPEN)
+               return 0;
+
        if (adapter->state != VNIC_CLOSED) {
                rc = ibmvnic_login(netdev);
                if (rc) {