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PCI/PM: Make pci_pme_active() ignore devices without PME support

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Make pci_pme_active() ignore devices without PME support, so that
it doesn't print the "PME enabled" or "PME disabled" debug messages
for devices that don't support PME.

So that pci_pme_active() doesn't have to check pm_cap in addition
to pme_support, make pci_pm_init() clear pme_support upfront to
make sure that it will be 0 for pm_cap equal to 0.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Rafael J. Wysocki 2013-04-10 10:32:51 +00:00 committed by Bjorn Helgaas
parent 769ba7212f
commit ffaddbe8f9
1 changed files with 2 additions and 3 deletions
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5
drivers/pci/pci.c
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@ -1571,7 +1571,7 @@ void pci_pme_active(struct pci_dev *dev, bool enable)
{
u16 pmcsr;
if (!dev->pm_cap)
if (!dev->pme_support)
return;
pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
@ -1920,6 +1920,7 @@ void pci_pm_init(struct pci_dev *dev)
dev->wakeup_prepared = false;
dev->pm_cap = 0;
dev->pme_support = 0;
/* find PCI PM capability in list */
pm = pci_find_capability(dev, PCI_CAP_ID_PM);
@ -1971,8 +1972,6 @@ void pci_pm_init(struct pci_dev *dev)
device_set_wakeup_capable(&dev->dev, true);
/* Disable the PME# generation functionality */
pci_pme_active(dev, false);
} else {
dev->pme_support = 0;
}
}