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| author | Len Brown <len.brown@intel.com> | 2009-09-19 06:06:59 +0200 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-09-19 06:06:59 +0200 |
| commit | 71fd68e7d234f6b7d8407c8f486764d24f8411f4 (patch) | |
| tree | 6dc2a4c356b4f454fc85d0c7cb019986f6f4993b /drivers/pci/pci-acpi.c | |
| parent | Merge branch 'bugzilla-13002' into release (diff) | |
| parent | Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/k... (diff) | |
| download | linux-71fd68e7d234f6b7d8407c8f486764d24f8411f4.tar.xz linux-71fd68e7d234f6b7d8407c8f486764d24f8411f4.zip | |
Merge branch 'linus' into release
Diffstat (limited to 'drivers/pci/pci-acpi.c')
| -rw-r--r-- | drivers/pci/pci-acpi.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index ea15b0537457..33317df47699 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -109,15 +109,32 @@ static bool acpi_pci_can_wakeup(struct pci_dev *dev) return handle ? acpi_bus_can_wakeup(handle) : false; } +static void acpi_pci_propagate_wakeup_enable(struct pci_bus *bus, bool enable) +{ + while (bus->parent) { + struct pci_dev *bridge = bus->self; + int ret; + + ret = acpi_pm_device_sleep_wake(&bridge->dev, enable); + if (!ret || bridge->is_pcie) + return; + bus = bus->parent; + } + + /* We have reached the root bus. */ + if (bus->bridge) + acpi_pm_device_sleep_wake(bus->bridge, enable); +} + static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable) { - int error = acpi_pm_device_sleep_wake(&dev->dev, enable); + if (acpi_pci_can_wakeup(dev)) + return acpi_pm_device_sleep_wake(&dev->dev, enable); - if (!error) - dev_printk(KERN_INFO, &dev->dev, - "wake-up capability %s by ACPI\n", - enable ? "enabled" : "disabled"); - return error; + if (!dev->is_pcie) + acpi_pci_propagate_wakeup_enable(dev->bus, enable); + + return 0; } static struct pci_platform_pm_ops acpi_pci_platform_pm = { |