| Message ID | 20130204115601.5569.27640.stgit@zurg (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 5cb5820..ff93f8f 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1401,6 +1401,9 @@ pci_disable_device(struct pci_dev *dev) if (dr) dr->enabled = 0; + dev_WARN_ONCE(&dev->dev, atomic_read(&dev->enable_cnt) <= 0, + "enable counter underflow"); + if (atomic_sub_return(1, &dev->enable_cnt) != 0) return;
This patch adds single WARN_ONCE() check for catching 'enable_cnt' imbalances. Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: linux-pci@vger.kernel.org Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com> --- drivers/pci/pci.c | 3 +++ 1 file changed, 3 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html