From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johan Hovold Subject: [PATCH] PM / runtime: Document new pm_runtime_set_suspended constraint Date: Mon, 24 Jul 2017 11:53:56 +0200 Message-ID: <20170724095356.21667-1-johan@kernel.org> Return-path: Received: from mail-lf0-f67.google.com ([209.85.215.67]:32977 "EHLO mail-lf0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753211AbdGXJyR (ORCPT ); Mon, 24 Jul 2017 05:54:17 -0400 Sender: linux-pm-owner@vger.kernel.org List-Id: linux-pm@vger.kernel.org To: "Rafael J. Wysocki" Cc: Len Brown , Pavel Machek , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Johan Hovold , Alan Stern , Tony Lindgren , Ulf Hansson Since commit a8636c89648a ("PM / Runtime: Don't allow to suspend a device with an active child") it is no longer permitted to set RPM_SUSPENDED state for a device with active children unless power.ignore_children is set. Update the documentation to reflect this. Cc: Alan Stern Cc: Tony Lindgren Cc: Ulf Hansson Signed-off-by: Johan Hovold --- Documentation/power/runtime_pm.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 0fde3dcf077a..625549d4c74a 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -435,7 +435,8 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: PM status to 'suspended' and update its parent's counter of 'active' children as appropriate (it is only valid to use this function if 'power.runtime_error' is set or 'power.disable_depth' is greater than - zero) + zero); it will fail and return an error code if the device has a child + which is active and the 'power.ignore_children' flag is unset bool pm_runtime_active(struct device *dev); - return true if the device's runtime PM status is 'active' or its -- 2.13.3