From mboxrd@z Thu Jan 1 00:00:00 1970 From: 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> References: <1357440509-28108-1-git-send-email-aaron.lu@intel.com> Return-path: 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 In-Reply-To: <1357440509-28108-1-git-send-email-aaron.lu@intel.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org 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 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) -- 1.7.11.7