If the device fails during module startup for some reason like unsupported chip
version then the driver would crash dereferencing a null pointer, on shutdown
or suspend/resume.
Signed-off-by: Stephen Hemminger <[EMAIL PROTECTED]>
---
drivers/net/sky2.c | 10 ++++++++++
1 file changed, 10 insertions(+)
--- linux-2.6.21.y.orig/drivers/net/sky2.c 2007-05-15 09:07:14.000000000
-0700
+++ linux-2.6.21.y/drivers/net/sky2.c 2007-05-15 09:07:32.000000000 -0700
@@ -3719,6 +3719,7 @@ err_out_free_regions:
pci_release_regions(pdev);
pci_disable_device(pdev);
err_out:
+ pci_set_drvdata(pdev, NULL);
return err;
}
@@ -3771,6 +3772,9 @@ static int sky2_suspend(struct pci_dev *
struct sky2_hw *hw = pci_get_drvdata(pdev);
int i, wol = 0;
+ if (!hw)
+ return 0;
+
del_timer_sync(&hw->idle_timer);
netif_poll_disable(hw->dev[0]);
@@ -3802,6 +3806,9 @@ static int sky2_resume(struct pci_dev *p
struct sky2_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;
@@ -3848,6 +3855,9 @@ static void sky2_shutdown(struct pci_dev
struct sky2_hw *hw = pci_get_drvdata(pdev);
int i, wol = 0;
+ if (!hw)
+ return;
+
del_timer_sync(&hw->idle_timer);
netif_poll_disable(hw->dev[0]);
--
Stephen Hemminger <[EMAIL PROTECTED]>
-
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