mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 07:04:24 +00:00
Code Issues Releases Wiki Activity

PCI: Use atomic_inc_return() rather than atomic_add_return()

Browse source 
No functional change; just use atomic_inc_return() rather than the
general-purpose atomic_add_return().

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2013-02-11 16:47:01 -07:00
parent fd6dceab01
commit cc7ba39bab
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/pci/pci.c
View file

@ -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);