From: Stephen Hemminger Date: Fri, 11 May 2007 18:21:44 +0000 (-0700) Subject: sky2: fix oops on shutdown X-Git-Tag: firefly_0821_release~29170^2~5 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=549a68c3fe2ca320b0764d1289d17af797daa5d1;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index a307310f13f5..3764008270a2 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -3732,6 +3732,7 @@ err_out_free_regions: err_out_disable: pci_disable_device(pdev); err_out: + pci_set_drvdata(pdev, NULL); return err; } @@ -3784,6 +3785,9 @@ static int sky2_suspend(struct pci_dev *pdev, pm_message_t state) 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 @@ static int sky2_resume(struct pci_dev *pdev) 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 @@ static void sky2_shutdown(struct pci_dev *pdev) 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]);