From patchwork Sun Jan 6 02:48:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aaron Lu X-Patchwork-Id: 1936951 Return-Path: X-Original-To: patchwork-linux-pm@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 28B0D400F6 for ; Sun, 6 Jan 2013 02:48:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755682Ab3AFCsh (ORCPT ); Sat, 5 Jan 2013 21:48:37 -0500 Received: from mga03.intel.com ([143.182.124.21]:23491 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755935Ab3AFCse (ORCPT ); Sat, 5 Jan 2013 21:48:34 -0500 Received: from azsmga002.ch.intel.com ([10.2.17.35]) by azsmga101.ch.intel.com with ESMTP; 05 Jan 2013 18:48:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,417,1355126400"; d="scan'208";a="188108654" Received: from aaronlu.sh.intel.com ([10.239.36.111]) by AZSMGA002.ch.intel.com with ESMTP; 05 Jan 2013 18:48:30 -0800 From: Aaron Lu To: Jeff Garzik , James Bottomley , "Rafael J. Wysocki" , Alan Stern , Tejun Heo Cc: Aaron Lu , Jeff Wu , linux-ide@vger.kernel.org, linux-pm@vger.kernel.org, linux-scsi@vger.kernel.org, linux-acpi@vger.kernel.org, Aaron Lu Subject: [PATCH v11 7/9] libata: expose pm qos flags for ata device Date: Sun, 6 Jan 2013 10:48:27 +0800 Message-Id: <1357440509-28108-8-git-send-email-aaron.lu@intel.com> X-Mailer: git-send-email 1.7.11.7 In-Reply-To: <1357440509-28108-1-git-send-email-aaron.lu@intel.com> References: <1357440509-28108-1-git-send-email-aaron.lu@intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Expose pm qos flags to user space so that user has a chance to disable pm features like power off, if he/she has a broken platform or devices or simply does not like this pm feature. This flag is exposed to user space only for ata device or atapi device that is zero power capable. For normal atapi device, it will never be powered off. Signed-off-by: Aaron Lu --- drivers/ata/libata-acpi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index e832bf6..5b67be3 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include "libata.h" @@ -1022,6 +1023,8 @@ static void ata_acpi_unregister_power_resource(struct ata_device *dev) void ata_acpi_bind(struct ata_device *dev) { ata_acpi_register_power_resource(dev); + if (dev->class == ATA_DEV_ATA || zpodd_dev_enabled(dev)) + dev_pm_qos_expose_flags(&dev->sdev->sdev_gendev, 0); } void ata_acpi_unbind(struct ata_device *dev)