Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932914AbbESOMJ (ORCPT ); Tue, 19 May 2015 10:12:09 -0400 Received: from mail-wg0-f42.google.com ([74.125.82.42]:33944 "EHLO mail-wg0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932846AbbESOMG (ORCPT ); Tue, 19 May 2015 10:12:06 -0400 From: Tomeu Vizoso To: linux-pm@vger.kernel.org Cc: Laurent Pinchart , Dmitry Torokhov , Alan Stern , Tomeu Vizoso , "Rafael J. Wysocki" , Len Brown , Pavel Machek , Greg Kroah-Hartman , Ulf Hansson , Kevin Hilman , Russell King , Krzysztof Kozlowski , linux-kernel@vger.kernel.org Subject: [PATCH v3 2/2] PM / Runtime: Add pm_runtime_enable_recursive Date: Tue, 19 May 2015 16:11:16 +0200 Message-Id: <1432044679-10256-3-git-send-email-tomeu.vizoso@collabora.com> X-Mailer: git-send-email 2.4.1 In-Reply-To: <1432044679-10256-1-git-send-email-tomeu.vizoso@collabora.com> References: <1432044679-10256-1-git-send-email-tomeu.vizoso@collabora.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1924 Lines: 55 This function makes less cumbersome to enable runtime PM in a device and its descendants. Signed-off-by: Tomeu Vizoso --- drivers/base/power/runtime.c | 15 +++++++++++++++ include/linux/pm_runtime.h | 1 + 2 files changed, 16 insertions(+) diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c index 5070c4f..2c96f3f 100644 --- a/drivers/base/power/runtime.c +++ b/drivers/base/power/runtime.c @@ -1189,6 +1189,21 @@ void pm_runtime_enable(struct device *dev) } EXPORT_SYMBOL_GPL(pm_runtime_enable); +static int __pm_runtime_enable_recursive(struct device *dev, void *data) +{ + pm_runtime_enable(dev); + + device_for_each_child(dev, NULL, __pm_runtime_enable_recursive); + + return 0; +} + +void pm_runtime_enable_recursive(struct device *dev) +{ + __pm_runtime_enable_recursive(dev, NULL); +} +EXPORT_SYMBOL_GPL(pm_runtime_enable_recursive); + /** * pm_runtime_forbid - Block runtime PM of a device. * @dev: Device to handle. diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 30e84d4..d393ac3 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -43,6 +43,7 @@ extern int pm_schedule_suspend(struct device *dev, unsigned int delay); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); extern void pm_runtime_enable(struct device *dev); +extern void pm_runtime_enable_recursive(struct device *dev); extern void __pm_runtime_disable(struct device *dev, bool check_resume); extern void pm_runtime_allow(struct device *dev); extern void pm_runtime_forbid(struct device *dev); -- 2.4.1 -- 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/