| Message ID | 1347872076-5260-3-git-send-email-ying.huang@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Monday, September 17, 2012, Huang Ying wrote: > 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> Makes sense. 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); > > > -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
--- 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);
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> --- drivers/acpi/pci_bind.c | 2 ++ 1 file changed, 2 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html