This patch adds single WARN_ONCE() check for catching 'enable_cnt' imbalances.
Signed-off-by: Konstantin Khlebnikov <[email protected]> Cc: [email protected] Cc: Bjorn Helgaas <[email protected]> --- drivers/pci/pci.c | 3 +++ 1 file changed, 3 insertions(+) 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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
