From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23DEFC43381 for ; Thu, 14 Feb 2019 10:30:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1E5A2229F for ; Thu, 14 Feb 2019 10:30:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392989AbfBNK37 (ORCPT ); Thu, 14 Feb 2019 05:29:59 -0500 Received: from foss.arm.com ([217.140.101.70]:40530 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389571AbfBNK37 (ORCPT ); Thu, 14 Feb 2019 05:29:59 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5DE68EBD; Thu, 14 Feb 2019 02:29:58 -0800 (PST) Received: from e107155-lin (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6D95A3F575; Thu, 14 Feb 2019 02:29:56 -0800 (PST) Date: Thu, 14 Feb 2019 10:29:53 +0000 From: Sudeep Holla To: Eugeniu Rosca Cc: "Rafael J . Wysocki" , Linux Kernel Mailing List , Linux PM , Greg Kroah-Hartman , Jisheng Zhang , Ulf Hansson , Steve Longerbeam , Joshua Frkuska , Eugeniu Rosca , "Rafael J. Wysocki" Subject: Re: [PATCH v2] drivers: base: add support to skip power management in device/driver model Message-ID: <20190214102953.GB28361@e107155-lin> References: <20190213120137.23354-1-sudeep.holla@arm.com> <20190213223849.GA26335@vmlxhi-102.adit-jv.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190213223849.GA26335@vmlxhi-102.adit-jv.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 13, 2019 at 11:38:49PM +0100, Eugeniu Rosca wrote: > Hello Sudeep, > > I appreciate your efforts. Currently, this patch generates below > warnings during s2ram on R-Car H3-Salvator-X: > > [ 46.874214] PM: suspend entry (deep) > [ 46.878211] PM: Syncing filesystems ... done. > [ 46.989148] Freezing user space processes ... (elapsed 0.004 seconds) done. > [ 47.000428] OOM killer disabled. > [ 47.003895] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done. > [ 47.226363] PM: suspend devices took 0.210 seconds > [ 47.280553] Disabling non-boot CPUs ... > [ 47.289157] ------------[ cut here ]------------ > [ 47.294524] sysfs group 'power' not found for kobject 'index0' > [ 47.300622] WARNING: CPU: 1 PID: 14 at fs/sysfs/group.c:256 sysfs_remove_group+0x78/0xc4 > ---snip--- > [ 47.550425] sysfs group 'power' not found for kobject 'index1' > ---snip--- > [ 47.807005] sysfs group 'power' not found for kobject 'index2' > ---snip--- > [ 48.063703] sysfs group 'power' not found for kobject 'cache' > ---snip--- > Thanks for the report, looks like I am not able to reproduce this, will check if I am missing something while testing. > Complete log and .config are shared in > https://gist.github.com/erosca/da9ea551033a503121de61049d77b834 > Thanks again, much appreciated for providing full log. -- Regards, Sudeep