netxen: avoid invalid iounmap

For NX3031 only one I/O range is mapped, so unmapping other
two which are used by older chips, causes this warning on
ppc64.

"Attempt to iounmap early bolted mapping at 0x0000000000000000"

Signed-off-by: Dhananjay Phadke <dhananjay@netxen.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/netxen/netxen_nic_main.c b/drivers/net/netxen/netxen_nic_main.c
index 86867405a367daa5b1bef9d6b1f0133774e5ea1f..f8e26290a22f9772e1ce52636d351f56992411b5 100644 (file)
--- a/drivers/net/netxen/netxen_nic_main.c
+++ b/drivers/net/netxen/netxen_nic_main.c
@@ -1004,8 +1004,10 @@ static void __devexit netxen_nic_remove(struct pci_dev *pdev)
 
        iounmap(adapter->ahw.db_base);
        iounmap(adapter->ahw.pci_base0);
-       iounmap(adapter->ahw.pci_base1);
-       iounmap(adapter->ahw.pci_base2);
+       if (adapter->ahw.pci_base1 != NULL)
+               iounmap(adapter->ahw.pci_base1);
+       if (adapter->ahw.pci_base2 != NULL)
+               iounmap(adapter->ahw.pci_base2);
 
        pci_release_regions(pdev);
        pci_disable_device(pdev);