diff options
| author |   Bjorn Helgaas <bhelgaas@google.com> | 2013-02-11 16:47:01 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2013-02-11 17:25:06 -0700 |
| commit | cc7ba39bab126339d6d525ada07dea5633d71521 (patch) | |
| tree | 25e660ec5fef0f99c49a0b6937f6a1b11e0cfd21 /drivers/pci/pci.c | |
| parent | PCI: Catch attempts to disable already-disabled devices (diff) | |
| download | linux-dev-cc7ba39bab126339d6d525ada07dea5633d71521.tar.xz linux-dev-cc7ba39bab126339d6d525ada07dea5633d71521.zip | |
PCI: Use atomic_inc_return() rather than atomic_add_return()
No functional change; just use atomic_inc_return() rather than the
general-purpose atomic_add_return().
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 29a09b705f04..c746b04afd6a 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1174,7 +1174,7 @@ static int __pci_enable_device_flags(struct pci_dev *dev, dev->current_state = (pmcsr & PCI_PM_CTRL_STATE_MASK); } - if (atomic_add_return(1, &dev->enable_cnt) > 1) + if (atomic_inc_return(&dev->enable_cnt) > 1) return 0; /* already enabled */ /* only skip sriov related */ @@ -1404,7 +1404,7 @@ pci_disable_device(struct pci_dev *dev) dev_WARN_ONCE(&dev->dev, atomic_read(&dev->enable_cnt) <= 0, "disabling already-disabled device"); - if (atomic_sub_return(1, &dev->enable_cnt) != 0) + if (atomic_dec_return(&dev->enable_cnt) != 0) return; do_pci_disable_device(dev); |