PCI/PM: Make pci_pme_active() ignore devices without PME support
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>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index fc9bd81..a5e0e5f 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1571,7 +1571,7 @@
{
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 @@
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 @@
device_set_wakeup_capable(&dev->dev, true);
/* Disable the PME# generation functionality */
pci_pme_active(dev, false);
- } else {
- dev->pme_support = 0;
}
}