skge: Make sure both ports initialize correctly

If allocation of the second ports fails, make sure that hw->ports
 is not 2 otherwise we'll crash trying to access the second port.

This fix is copied from a similar fix in the sky2 driver (ca519274...),
but is untested, as I don't have a skge card.

Signed-off-by: Mike McCormack <mikem@ring3k.org>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/net/skge.c b/drivers/net/skge.c
index 55bad4081966..2bb21ffbde3a 100644
--- a/drivers/net/skge.c
+++ b/drivers/net/skge.c
@@ -3982,14 +3982,17 @@ static int __devinit skge_probe(struct pci_dev *pdev,
         }
         skge_show_addr(dev);
 
-        if (hw->ports > 1 && (dev1 = skge_devinit(hw, 1, using_dac))) {
-                if (register_netdev(dev1) == 0)
+        if (hw->ports > 1) {
+                dev1 = skge_devinit(hw, 1, using_dac);
+                if (dev1 && register_netdev(dev1) == 0)
                         skge_show_addr(dev1);
                 else {
                         /* Failure to register second port need not be fatal */
                         dev_warn(&pdev->dev, "register of second port failed\n");
                         hw->dev[1] = NULL;
-                        free_netdev(dev1);
+                        hw->ports = 1;
+                        if (dev1)
+                                free_netdev(dev1);
                 }
         }
         pci_set_drvdata(pdev, hw);