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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 A6959C2D0DB for ; Fri, 24 Jan 2020 11:30:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E49922464 for ; Fri, 24 Jan 2020 11:30:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579865431; bh=FqMITQzpPmnKmgUK//ibo6+YIPZyhuZ0wjCpj8u/7n4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=wYZIY9fg4nu4lTLRXxwyKJVIGEij3ANXrmwctUmzmXS6B2CeIE4vCgLDOXn2zkc+2 qMsfVZUHMJKDCSchrUr9FdhfigGZ9FI9xHv+1/YTFH+hDiGvPicdfBnpxuAtGq4goM G93xLF5cj6SobbgZ2xveLpPSVmj6PHs4sicn226k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404246AbgAXLaa (ORCPT ); Fri, 24 Jan 2020 06:30:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:48144 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404236AbgAXLa2 (ORCPT ); Fri, 24 Jan 2020 06:30:28 -0500 Received: from localhost (ip-213-127-102-57.ip.prioritytelecom.net [213.127.102.57]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7A4F62077C; Fri, 24 Jan 2020 11:30:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579865427; bh=FqMITQzpPmnKmgUK//ibo6+YIPZyhuZ0wjCpj8u/7n4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eNGGTimWp3cn12NBK9kKBuOMex8YQNp/OHrf7oIMC3v26+p5ORnklCzPC+x2arDre H+0VtxWwc3VGK2Nx6rZb2cfyqwfk92IERAAHsOy0LCDyPafBraT87UOM3yS2PC+SUQ qTnszGg36JeVcmvVXhHwbz/W4UnpRSiQRPfoy/8g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tri Vo , Kalesh Singh , Ravi Chandra Sadineni , Viresh Kumar , Stephen Boyd , "Rafael J. Wysocki" , Sebastian Reichel , Sasha Levin Subject: [PATCH 4.19 530/639] power: supply: Init device wakeup after device_add() Date: Fri, 24 Jan 2020 10:31:40 +0100 Message-Id: <20200124093155.218055161@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200124093047.008739095@linuxfoundation.org> References: <20200124093047.008739095@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Stephen Boyd [ Upstream commit 8288022284859acbcc3cf1a073a1e2692d6c2543 ] We may want to use the device pointer in device_init_wakeup() with functions that expect the device to already be added with device_add(). For example, if we were to link the device initializing wakeup to something in sysfs such as a class for wakeups we'll run into an error. It looks like this code was written with the assumption that the device would be added before initializing wakeup due to the order of operations in power_supply_unregister(). Let's change the order of operations so we don't run into problems here. Fixes: 948dcf966228 ("power_supply: Prevent suspend until power supply events are processed") Cc: Greg Kroah-Hartman Cc: Tri Vo Cc: Kalesh Singh Cc: Ravi Chandra Sadineni Cc: Viresh Kumar Signed-off-by: Stephen Boyd Acked-by: Rafael J. Wysocki Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/supply/power_supply_core.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index e85361878450c..e43a7b3b570c4 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -902,14 +902,14 @@ __power_supply_register(struct device *parent, } spin_lock_init(&psy->changed_lock); - rc = device_init_wakeup(dev, ws); - if (rc) - goto wakeup_init_failed; - rc = device_add(dev); if (rc) goto device_add_failed; + rc = device_init_wakeup(dev, ws); + if (rc) + goto wakeup_init_failed; + rc = psy_register_thermal(psy); if (rc) goto register_thermal_failed; @@ -946,8 +946,8 @@ register_cooler_failed: psy_unregister_thermal(psy); register_thermal_failed: device_del(dev); -device_add_failed: wakeup_init_failed: +device_add_failed: check_supplies_failed: dev_set_name_failed: put_device(dev); -- 2.20.1