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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,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 985A9C4646B for ; Wed, 12 May 2021 18:18:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3733661413 for ; Wed, 12 May 2021 18:18:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354142AbhELSQs (ORCPT ); Wed, 12 May 2021 14:16:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:42866 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241272AbhELQ07 (ORCPT ); Wed, 12 May 2021 12:26:59 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 39908619C6; Wed, 12 May 2021 15:51:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620834666; bh=llp0Bgg9/jChzZe4pGkpuJQ9rTUhUQO4yDgMc/PuRss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ELsCbzqHFMVp/IX62m+Y1jzaA4RnMNlmHfeKi92aewxcP5t/EH9XV+rsJt3bbOFEE CWNXxoYBaGJXHR8vyd8F7nZPJDNwIbE4qbfQrVoz3PJNLJC105LkVTO79YjW4J45DM Q1ROPnQ1rJUpi29m14Bzbd4XK1kx8giWPd8FXytQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Pierre-Louis Bossart , Heikki Krogerus Subject: [PATCH 5.12 006/677] software node: Allow node addition to already existing device Date: Wed, 12 May 2021 16:40:52 +0200 Message-Id: <20210512144837.429620295@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144837.204217980@linuxfoundation.org> References: <20210512144837.204217980@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Heikki Krogerus commit b622b24519f5b008f6d4e20e5675eaffa8fbd87b upstream. If the node is added to an already exiting device, the node needs to be also linked to the device separately. This will make sure the reference count is kept in balance also when the node is injected to a device afterwards. Fixes: e68d0119e328 ("software node: Introduce device_add_software_node()") Reported-by: Pierre-Louis Bossart Signed-off-by: Heikki Krogerus Cc: stable Link: https://lore.kernel.org/r/20210414075438.64547-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/base/swnode.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/drivers/base/swnode.c +++ b/drivers/base/swnode.c @@ -1032,6 +1032,7 @@ int device_add_software_node(struct devi } set_secondary_fwnode(dev, &swnode->fwnode); + software_node_notify(dev, KOBJ_ADD); return 0; } @@ -1105,8 +1106,8 @@ int software_node_notify(struct device * switch (action) { case KOBJ_ADD: - ret = sysfs_create_link(&dev->kobj, &swnode->kobj, - "software_node"); + ret = sysfs_create_link_nowarn(&dev->kobj, &swnode->kobj, + "software_node"); if (ret) break;