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Commit cc7ba39b authored by Bjorn Helgaas's avatar Bjorn Helgaas
Browse files

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: default avatarBjorn Helgaas <bhelgaas@google.com>
parent fd6dceab

drivers/pci/pci.c

+2 −2
Original line number Diff line number Diff line
@@ -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);