From patchwork Mon Sep 17 08:54:35 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Huang, Ying" X-Patchwork-Id: 1466261 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: X-Original-To: patchwork-linux-pci@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 90E513FE79 for ; Mon, 17 Sep 2012 08:55:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754811Ab2IQIyv (ORCPT ); Mon, 17 Sep 2012 04:54:51 -0400 Received: from mga01.intel.com ([192.55.52.88]:12419 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754771Ab2IQIyu (ORCPT ); Mon, 17 Sep 2012 04:54:50 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 17 Sep 2012 01:54:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,434,1344236400"; d="scan'208";a="222936834" Received: from yhuang-dev.sh.intel.com ([10.239.13.28]) by fmsmga002.fm.intel.com with ESMTP; 17 Sep 2012 01:54:48 -0700 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: [RFC 2/3] PCI/PM: Make PCI devices notified when its power resource turned on Date: Mon, 17 Sep 2012 16:54:35 +0800 Message-Id: <1347872076-5260-3-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1347872076-5260-1-git-send-email-ying.huang@intel.com> References: <1347872076-5260-1-git-send-email-ying.huang@intel.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org 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(+) -- 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);