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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-22 23:54:53 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-09-23 00:01:40 +0400 |
| commit | ae19ffbadc1b2100285a5b5b3d0a4e0a11390904 (patch) | |
| tree | 3c2086ab67398a019089a47ca3f362a4bc6db74f /drivers/pci/pci-acpi.c | |
| parent | 34e84f39a27d059a3e6ec6e8b94aafa702e6f220 (diff) | |
| parent | 9173a8ef24a6b1b8031507b35b8ffe5f85a87692 (diff) | |
| download | linux-ae19ffbadc1b2100285a5b5b3d0a4e0a11390904.tar.xz | |
Merge branch 'master' into for-linus
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 = { |