1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 964e9c0948bc..3ead111111e1 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -1745,6 +1745,12 @@ int pch_gbe_up(struct pch_gbe_adapter *adapter)
         struct pch_gbe_rx_ring *rx_ring = adapter->rx_ring;
         int err;
 
+        /* Ensure we have a valid MAC */
+        if (!is_valid_ether_addr(adapter->hw.mac.addr)) {
+                pr_err("Error: Invalid MAC address\n");
+                return -EINVAL;
+        }
+
         /* hardware has been reset, we need to reload some things */
         pch_gbe_set_multi(netdev);
 
@@ -2468,9 +2474,14 @@ static int pch_gbe_probe(struct pci_dev *pdev,
 
         memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len);
         if (!is_valid_ether_addr(netdev->dev_addr)) {
-                dev_err(&pdev->dev, "Invalid MAC Address\n");
-                ret = -EIO;
-                goto err_free_adapter;
+                /*
+                 * If the MAC is invalid (or just missing), display a warning
+                 * but do not abort setting up the device. pch_gbe_up will
+                 * prevent the interface from being brought up until a valid MAC
+                 * is set.
+                 */
+                dev_err(&pdev->dev, "Invalid MAC address, "
+                                    "interface disabled.\n");
         }
         setup_timer(&adapter->watchdog_timer, pch_gbe_watchdog,
                     (unsigned long)adapter);