sky2: fix oops on shutdown
If the device is 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 <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c
index a307310..3764008 100644
--- a/drivers/net/sky2.c
+++ b/drivers/net/sky2.c
@@ -3732,6 +3732,7 @@
err_out_disable:
pci_disable_device(pdev);
err_out:
+ pci_set_drvdata(pdev, NULL);
return err;
}
@@ -3784,6 +3785,9 @@
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]);
@@ -3815,6 +3819,9 @@
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;
@@ -3861,6 +3868,9 @@
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]);