Change 0 to NULL where appropriate.
Signed-off-by: Peter Hagervall <hager@cs.umu.se>
Acked-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
                tp->write32_rx_mbox = tg3_write_indirect_mbox;
 
                iounmap(tp->regs);
-               tp->regs = 0;
+               tp->regs = NULL;
 
                pci_read_config_word(tp->pdev, PCI_COMMAND, &pci_cmd);
                pci_cmd &= ~PCI_COMMAND_MEMORY;
 err_out_iounmap:
        if (tp->regs) {
                iounmap(tp->regs);
-               tp->regs = 0;
+               tp->regs = NULL;
        }
 
 err_out_free_dev:
                unregister_netdev(dev);
                if (tp->regs) {
                        iounmap(tp->regs);
-                       tp->regs = 0;
+                       tp->regs = NULL;
                }
                free_netdev(dev);
                pci_release_regions(pdev);