From patchwork Wed Sep 26 13:59:31 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Huang, Ying" X-Patchwork-Id: 187086 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id BE79D2C0096 for ; Thu, 27 Sep 2012 00:00:16 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756601Ab2IZN7y (ORCPT ); Wed, 26 Sep 2012 09:59:54 -0400 Received: from mga14.intel.com ([143.182.124.37]:48911 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756152Ab2IZN7x (ORCPT ); Wed, 26 Sep 2012 09:59:53 -0400 Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga102.ch.intel.com with ESMTP; 26 Sep 2012 06:59:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,490,1344236400"; d="scan'208";a="197397358" Received: from yhuang-dev.sh.intel.com ([10.239.13.28]) by azsmga001.ch.intel.com with ESMTP; 26 Sep 2012 06:59:33 -0700 From: Huang Ying To: Len Brown Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , ying.huang@intel.com, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-pci@vger.kernel.org, Bjorn Helgaas Subject: [PATCH RESEND] ACPI/PCI: Make PCI devices notified when its power resource turned on Date: Wed, 26 Sep 2012 21:59:31 +0800 Message-Id: <1348667971-30876-1-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Sorry for bothering. It appears that this patch should go through ACPI tree because code changed are under drivers/acpi. 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 Cc: Bjorn Helgaas --- 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 --- 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);