Messages in this thread Patch in this message | | | From | Huang Ying <> | Subject | [PATCH] ACPI/PCI: Make PCI devices notified when its power resource turned on | Date | Wed, 26 Sep 2012 21:48:37 +0800 |
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A set of power resources may be shared by multiple devices. When all devices share one set of power resources is put into D3_COLD state, the power resources will be turned off. When one of the device is waked, the power resource will be turned on and all devices share it will be powered on to D0uninitialized state. These devices should be resumed, so that they can get opportunity to go to low power state later.
Signed-off-by: Huang Ying <ying.huang@intel.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> --- drivers/acpi/pci_bind.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/acpi/pci_bind.c +++ b/drivers/acpi/pci_bind.c @@ -45,6 +45,7 @@ static int acpi_pci_unbind(struct acpi_d device_set_run_wake(&dev->dev, false); pci_acpi_remove_pm_notifier(device); + acpi_power_resource_unregister_device(dev, device->handle); if (!dev->subordinate) goto out; @@ -71,6 +72,7 @@ static int acpi_pci_bind(struct acpi_dev return 0; pci_acpi_add_pm_notifier(device, dev); + acpi_power_resource_register_device(dev, device->handle); if (device->wakeup.flags.run_wake) device_set_run_wake(&dev->dev, true);
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