Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932105Ab0KXXRQ (ORCPT ); Wed, 24 Nov 2010 18:17:16 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:52736 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932133Ab0KXXRI (ORCPT ); Wed, 24 Nov 2010 18:17:08 -0500 From: "Rafael J. Wysocki" To: Len Brown Subject: [PATCH 5/13] ACPI / PM: Introduce function for refcounting device power resources Date: Thu, 25 Nov 2010 00:06:55 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.37-rc3+; KDE/4.4.4; x86_64; ; ) Cc: ACPI Devel Maling List , LKML , "Linux-pm mailing list" , Matthew Garrett , Maciej Rutecki References: <201011250001.11297.rjw@sisk.pl> In-Reply-To: <201011250001.11297.rjw@sisk.pl> MIME-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <201011250006.55559.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1885 Lines: 52 From: Rafael J. Wysocki Introduce function acpi_power_on_resources() that reference counts and possibly turns on ACPI power resources for a given device and a given power state of it. This function will be used for reference counting device power resources during initialization. Signed-off-by: Rafael J. Wysocki --- drivers/acpi/internal.h | 1 + drivers/acpi/power.c | 8 ++++++++ 2 files changed, 9 insertions(+) Index: linux-2.6/drivers/acpi/power.c =================================================================== --- linux-2.6.orig/drivers/acpi/power.c +++ linux-2.6/drivers/acpi/power.c @@ -485,6 +485,14 @@ int acpi_power_get_inferred_state(struct return 0; } +int acpi_power_on_resources(struct acpi_device *device, int state) +{ + if (!device || state < ACPI_STATE_D0 || state > ACPI_STATE_D3) + return -EINVAL; + + return acpi_power_on_list(&device->power.states[state].resources); +} + int acpi_power_transition(struct acpi_device *device, int state) { int result; Index: linux-2.6/drivers/acpi/internal.h =================================================================== --- linux-2.6.orig/drivers/acpi/internal.h +++ linux-2.6/drivers/acpi/internal.h @@ -42,6 +42,7 @@ int acpi_power_init(void); int acpi_device_sleep_wake(struct acpi_device *dev, int enable, int sleep_state, int dev_state); int acpi_power_get_inferred_state(struct acpi_device *device, int *state); +int acpi_power_on_resources(struct acpi_device *device, int state); int acpi_power_transition(struct acpi_device *device, int state); extern int acpi_power_nocheck; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/