From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752146AbZGXDBs (ORCPT ); Thu, 23 Jul 2009 23:01:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752089AbZGXDBk (ORCPT ); Thu, 23 Jul 2009 23:01:40 -0400 Received: from mga01.intel.com ([192.55.52.88]:63828 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751962AbZGXDBg (ORCPT ); Thu, 23 Jul 2009 23:01:36 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.43,259,1246863600"; d="scan'208";a="477569761" Subject: [PATCH V2 3/4] ACPI battery: support async resume From: Zhang Rui To: Linux Kernel Mailing List , linux-pm , linux-acpi Cc: "Rafael J. Wysocki" , Pavel Machek , Len Brown , Alan Stern , Arjan van de Ven , "Zhang, Rui" Content-Type: text/plain Date: Fri, 24 Jul 2009 11:02:10 +0800 Message-Id: <1248404530.2670.111.camel@rzhang-dt> Mime-Version: 1.0 X-Mailer: Evolution 2.22.1 (2.22.1-2.fc9) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ACPI battery supports device async actions. Create an async domain for every ACPI battery device, so that ACPI battery can be resumed asynchronously. Signed-off-by: Zhang Rui --- drivers/acpi/battery.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) Index: linux-2.6/drivers/acpi/battery.c =================================================================== --- linux-2.6.orig/drivers/acpi/battery.c +++ linux-2.6/drivers/acpi/battery.c @@ -829,6 +829,17 @@ static int acpi_battery_add(struct acpi_ strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); device->driver_data = battery; mutex_init(&battery->lock); + + /* + * dev_async_register must be called before any of its child + * device being registered, i.e. power supply sysfs class device. + */ + result = dev_async_register(&device->dev, DEV_ASYNC_RESUME); + if (result) { + kfree(battery); + return result; + } + acpi_battery_update(battery); #ifdef CONFIG_ACPI_PROCFS_POWER result = acpi_battery_add_fs(device); @@ -841,6 +852,7 @@ static int acpi_battery_add(struct acpi_ #ifdef CONFIG_ACPI_PROCFS_POWER acpi_battery_remove_fs(device); #endif + dev_async_unregister(&device->dev); kfree(battery); } return result; @@ -859,6 +871,7 @@ static int acpi_battery_remove(struct ac #ifdef CONFIG_ACPI_SYSFS_POWER sysfs_remove_battery(battery); #endif + dev_async_unregister(&device->dev); mutex_destroy(&battery->lock); kfree(battery); return 0;