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=-19.5 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, URIBL_BLOCKED,USER_AGENT_GIT 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 6F112C4320A for ; Mon, 26 Jul 2021 16:10:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 597DF60BD3 for ; Mon, 26 Jul 2021 16:10:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232119AbhGZPaZ (ORCPT ); Mon, 26 Jul 2021 11:30:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:41562 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231739AbhGZP2N (ORCPT ); Mon, 26 Jul 2021 11:28:13 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B893360FD8; Mon, 26 Jul 2021 16:07:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1627315635; bh=So/Opxk55/ZLsA9ubwU2FKPcNTpNpnQXdG1DynM+c0k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=huTvZyKGI8CV+j7eI010sVZ7gKjhQWrogaVb8Gsx4dIn+4T9Gye/EBXluk4Hb6s/n 1CCVyx6s9mIWVB65eSnbEs/XNCB98vV1QhrZZAj4doop/YvtOMkVOxeAwJpuQ51LU4 lBNpvIVAnsVLmq9NJhYdt8IMnFJXmT7HO7Kq2zMY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Adrian Hunter , "Rafael J. Wysocki" Subject: [PATCH 5.10 153/167] driver core: Prevent warning when removing a device link from unregistered consumer Date: Mon, 26 Jul 2021 17:39:46 +0200 Message-Id: <20210726153844.545049021@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210726153839.371771838@linuxfoundation.org> References: <20210726153839.371771838@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: stable@vger.kernel.org From: Adrian Hunter commit e64daad660a0c9ace3acdc57099fffe5ed83f977 upstream. sysfs_remove_link() causes a warning if the parent directory does not exist. That can happen if the device link consumer has not been registered. So do not attempt sysfs_remove_link() in that case. Fixes: 287905e68dd29 ("driver core: Expose device link details in sysfs") Signed-off-by: Adrian Hunter Cc: stable@vger.kernel.org # 5.9+ Reviewed-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/20210716114408.17320-2-adrian.hunter@intel.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -449,8 +449,10 @@ static void devlink_remove_symlinks(stru return; } - snprintf(buf, len, "supplier:%s:%s", dev_bus_name(sup), dev_name(sup)); - sysfs_remove_link(&con->kobj, buf); + if (device_is_registered(con)) { + snprintf(buf, len, "supplier:%s:%s", dev_bus_name(sup), dev_name(sup)); + sysfs_remove_link(&con->kobj, buf); + } snprintf(buf, len, "consumer:%s:%s", dev_bus_name(con), dev_name(con)); sysfs_remove_link(&sup->kobj, buf); kfree(buf);