From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932547AbdIXXm0 (ORCPT ); Sun, 24 Sep 2017 19:42:26 -0400 Received: from cloudserver094114.home.net.pl ([79.96.170.134]:59013 "EHLO cloudserver094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932444AbdIXXmY (ORCPT ); Sun, 24 Sep 2017 19:42:24 -0400 From: "Rafael J. Wysocki" To: Linux PCI , Bjorn Helgaas Cc: Alan Stern , Linux PM , Mika Westerberg , LKML Subject: [PATCH] PM / PCI: Do not resume any devices in pci_pm_prepare() Date: Mon, 25 Sep 2017 01:33:13 +0200 Message-ID: <1877076.QiUpNxchJO@aspire.rjw.lan> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rafael J. Wysocki It should not be necessary to resume devices with ignore_children set in pci_pm_prepare(), because they should be resumed explcitly by their children drivers during suspend if need be and they will be resumed by pci_pm_suspend() after that anyway, so avoid doing that. Signed-off-by: Rafael J. Wysocki --- drivers/pci/pci-driver.c | 7 ------- 1 file changed, 7 deletions(-) Index: linux-pm/drivers/pci/pci-driver.c =================================================================== --- linux-pm.orig/drivers/pci/pci-driver.c +++ linux-pm/drivers/pci/pci-driver.c @@ -680,13 +680,6 @@ static int pci_pm_prepare(struct device { struct device_driver *drv = dev->driver; - /* - * Devices having power.ignore_children set may still be necessary for - * suspending their children in the next phase of device suspend. - */ - if (dev->power.ignore_children) - pm_runtime_resume(dev); - if (drv && drv->pm && drv->pm->prepare) { int error = drv->pm->prepare(dev); if (error)