From patchwork Mon Oct 16 01:30:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 10007381 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id A6CA5601E9 for ; Mon, 16 Oct 2017 01:44:45 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9921D2623C for ; Mon, 16 Oct 2017 01:44:45 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8E1352654B; Mon, 16 Oct 2017 01:44:45 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4BE6F2623C for ; Mon, 16 Oct 2017 01:44:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751812AbdJPBnI (ORCPT ); Sun, 15 Oct 2017 21:43:08 -0400 Received: from cloudserver094114.home.net.pl ([79.96.170.134]:49262 "EHLO cloudserver094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751733AbdJPBnD (ORCPT ); Sun, 15 Oct 2017 21:43:03 -0400 Received: from 79.184.255.244.ipv4.supernova.orange.pl (79.184.255.244) (HELO aspire.rjw.lan) by serwer1319399.home.pl (79.96.170.134) with SMTP (IdeaSmtpServer 0.82) id a0e80391b9268ab2; Mon, 16 Oct 2017 03:43:01 +0200 From: "Rafael J. Wysocki" To: Linux PM Cc: Bjorn Helgaas , Alan Stern , Greg Kroah-Hartman , LKML , Linux ACPI , Linux PCI , Linux Documentation , Mika Westerberg , Ulf Hansson , Andy Shevchenko , Kevin Hilman , Wolfram Sang , linux-i2c@vger.kernel.org, Lee Jones Subject: [PATCH 09/12] PM / mfd: intel-lpss: Use DPM_FLAG_SMART_SUSPEND Date: Mon, 16 Oct 2017 03:30:16 +0200 Message-ID: <5094729.JAaD38WncM@aspire.rjw.lan> In-Reply-To: <3806130.B2KCK0tvef@aspire.rjw.lan> References: <3806130.B2KCK0tvef@aspire.rjw.lan> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Rafael J. Wysocki Make the intel-lpss driver set DPM_FLAG_SMART_SUSPEND for its devices which will allow them to stay in runtime suspend during system suspend unless they need to be reconfigured for some reason. Also make it avoid resuming its child devices if they have DPM_FLAG_SMART_SUSPEND set to allow them to remain in runtime suspend during system suspend. Signed-off-by: Rafael J. Wysocki --- drivers/mfd/intel-lpss.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) Index: linux-pm/drivers/mfd/intel-lpss.c =================================================================== --- linux-pm.orig/drivers/mfd/intel-lpss.c +++ linux-pm/drivers/mfd/intel-lpss.c @@ -450,6 +450,8 @@ int intel_lpss_probe(struct device *dev, if (ret) goto err_remove_ltr; + dev_pm_set_driver_flags(dev, DPM_FLAG_SMART_SUSPEND); + return 0; err_remove_ltr: @@ -478,7 +480,9 @@ EXPORT_SYMBOL_GPL(intel_lpss_remove); static int resume_lpss_device(struct device *dev, void *data) { - pm_runtime_resume(dev); + if (!dev_pm_test_driver_flags(dev, DPM_FLAG_SMART_SUSPEND)) + pm_runtime_resume(dev); + return 0; }