[netdrvr] tulip: oops in tulip_interrupt when hibernating with swsusp/suspend2

The following patch is seems to fix the tulip suspend/resume panic:
	http://bugzilla.kernel.org/show_bug.cgi?id=8952#c46

My attempts at a cleaner patch failed and Pavel thinks this is OK.

Original from:  kernelbugs@tap.homeip.net
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index f9d13fa..55670b5 100644 (file)
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -1729,12 +1729,15 @@ static int tulip_suspend (struct pci_dev *pdev, pm_message_t state)
        if (!dev)
                return -EINVAL;
 
-       if (netif_running(dev))
-               tulip_down(dev);
+       if (!netif_running(dev))
+               goto save_state;
+
+       tulip_down(dev);
 
        netif_device_detach(dev);
        free_irq(dev->irq, dev);
 
+save_state:
        pci_save_state(pdev);
        pci_disable_device(pdev);
        pci_set_power_state(pdev, pci_choose_state(pdev, state));
@@ -1754,6 +1757,9 @@ static int tulip_resume(struct pci_dev *pdev)
        pci_set_power_state(pdev, PCI_D0);
        pci_restore_state(pdev);
 
+       if (!netif_running(dev))
+               return 0;
+
        if ((retval = pci_enable_device(pdev))) {
                printk (KERN_ERR "tulip: pci_enable_device failed in resume\n");
                return retval;