[PATCH 5/6] skge: crash on shutdown/suspend

[Stephen Hemminger <shemminger@linux-foundation.org>]

[-- Attachment #1: skge-shutdown.patch --]
[-- Type: text/plain, Size: 1237 bytes --]

If device fails during module startup for some reason (like unsupported chip
version) then driver would crash dereferencing a null pointer, on shutdown
or suspend/resume.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>

---
 drivers/net/skge.c |    9 +++++++++
 1 file changed, 9 insertions(+)

--- linux-2.6.21.y.orig/drivers/net/skge.c	2007-05-15 09:06:30.000000000 -0700
+++ linux-2.6.21.y/drivers/net/skge.c	2007-05-15 09:07:20.000000000 -0700
@@ -3794,6 +3794,9 @@ static int skge_suspend(struct pci_dev *
 	struct skge_hw *hw  = pci_get_drvdata(pdev);
 	int i, err, wol = 0;
 
+	if (!hw)
+		return 0;
+
 	err = pci_save_state(pdev);
 	if (err)
 		return err;
@@ -3822,6 +3825,9 @@ static int skge_resume(struct pci_dev *p
 	struct skge_hw *hw  = pci_get_drvdata(pdev);
 	int i, err;
 
+	if (!hw)
+		return 0;
+
 	err = pci_set_power_state(pdev, PCI_D0);
 	if (err)
 		goto out;
@@ -3860,6 +3866,9 @@ static void skge_shutdown(struct pci_dev
 	struct skge_hw *hw  = pci_get_drvdata(pdev);
 	int i, wol = 0;
 
+	if (!hw)
+		return;
+
 	for (i = 0; i < hw->ports; i++) {
 		struct net_device *dev = hw->dev[i];
 		struct skge_port *skge = netdev_priv(dev);

--
Stephen Hemminger <shemminger@linux-foundation.org>