From patchwork Fri Feb 11 20:00:23 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rafael Wysocki X-Patchwork-Id: 550551 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1BK0fcl032648 for ; Fri, 11 Feb 2011 20:00:41 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758055Ab1BKUAh (ORCPT ); Fri, 11 Feb 2011 15:00:37 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:37489 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757392Ab1BKUAg (ORCPT ); Fri, 11 Feb 2011 15:00:36 -0500 Received: from localhost (localhost.localdomain [127.0.0.1]) by ogre.sisk.pl (Postfix) with ESMTP id 6B5BF1A509B; Fri, 11 Feb 2011 20:57:40 +0100 (CET) Received: from ogre.sisk.pl ([127.0.0.1]) by localhost (ogre.sisk.pl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 16665-02; Fri, 11 Feb 2011 20:57:21 +0100 (CET) Received: from ferrari.rjw.lan (220-bem-13.acn.waw.pl [82.210.184.220]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ogre.sisk.pl (Postfix) with ESMTP id 118E01A501A; Fri, 11 Feb 2011 20:57:21 +0100 (CET) From: "Rafael J. Wysocki" To: linux-pm@lists.linux-foundation.org Subject: [PATCH] PM: Allow pm_runtime_suspend() to succeed during system suspend Date: Fri, 11 Feb 2011 21:00:23 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc4+; KDE/4.4.4; x86_64; ; ) Cc: Alan Stern , linux-i2c@vger.kernel.org, Ben Dooks , linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Kevin Hilman References: <201101311919.49225.rjw@sisk.pl> In-Reply-To: <201101311919.49225.rjw@sisk.pl> MIME-Version: 1.0 Message-Id: <201102112100.23996.rjw@sisk.pl> X-Virus-Scanned: amavisd-new at ogre.sisk.pl using MkS_Vir for Linux Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 11 Feb 2011 20:01:03 +0000 (UTC) Index: linux-2.6/drivers/base/power/main.c =================================================================== --- linux-2.6.orig/drivers/base/power/main.c +++ linux-2.6/drivers/base/power/main.c @@ -669,7 +669,6 @@ static void dpm_complete(pm_message_t st mutex_unlock(&dpm_list_mtx); device_complete(dev, state); - pm_runtime_put_sync(dev); mutex_lock(&dpm_list_mtx); put_device(dev); @@ -1005,12 +1004,9 @@ static int dpm_prepare(pm_message_t stat if (pm_runtime_barrier(dev) && device_may_wakeup(dev)) pm_wakeup_event(dev, 0); - if (pm_wakeup_pending()) { - pm_runtime_put_sync(dev); - error = -EBUSY; - } else { - error = device_prepare(dev, state); - } + pm_runtime_put_sync(dev); + error = pm_wakeup_pending() ? + -EBUSY : device_prepare(dev, state); mutex_lock(&dpm_list_mtx); if (error) {