From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com ([192.55.52.93]:39071 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755995Ab2IZNsm (ORCPT ); Wed, 26 Sep 2012 09:48:42 -0400 From: Huang Ying To: Bjorn Helgaas Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, "Rafael J. Wysocki" , 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 Message-Id: <1348667317-30693-1-git-send-email-ying.huang@intel.com> Sender: linux-pci-owner@vger.kernel.org List-ID: 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 Acked-by: Rafael J. Wysocki --- 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);