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,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 96CD4C04FF3 for ; Mon, 24 May 2021 15:12:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C0C76100C for ; Mon, 24 May 2021 15:12:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233960AbhEXPNp (ORCPT ); Mon, 24 May 2021 11:13:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:40894 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234234AbhEXPHD (ORCPT ); Mon, 24 May 2021 11:07:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 999B261864; Mon, 24 May 2021 14:51:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1621867879; bh=RoB6vYWZYdd+NFdYaGdOcUCdT3LohU7v+XM3Bfae6t4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gDRJ7iextn6tZPuw8yPUcphJkLikbMoo7OL9OO+sUygKxXLr/niUsYClX2NEF6Msi pkxB5wbo23dxSn6aGljsdVeZa58ACvg9UUKtsR0enRKun6XAtvTB6uo9GB4UctRzaz X0DUL+AVXDhC/Y0L3g7RSLb0if7hTxVtKD1dn7jzGi6/na/NFH20BdUwpJKvvCwtIt GoeFytnffUfPaZlU3Veed37PJaWlGsSdQT5AXxDVGfJEiY23u6mKtHZea95cLN0BmJ CL4dwJpMbxyb9aY5D52pUdDgNtZe+31seRvEh/x7ATfeThNYqsHdPG567aLQbzh9iC ZJZpvwHP7FO4w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , Kalle Valo , Sasha Levin , libertas-dev@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 10/19] libertas: register sysfs groups properly Date: Mon, 24 May 2021 10:50:57 -0400 Message-Id: <20210524145106.2499571-10-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210524145106.2499571-1-sashal@kernel.org> References: <20210524145106.2499571-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Greg Kroah-Hartman [ Upstream commit 7e79b38fe9a403b065ac5915465f620a8fb3de84 ] The libertas driver was trying to register sysfs groups "by hand" which causes them to be created _after_ the device is initialized and announced to userspace, which causes races and can prevent userspace tools from seeing the sysfs files correctly. Fix this up by using the built-in sysfs_groups pointers in struct net_device which were created for this very reason, fixing the race condition, and properly allowing for any error that might have occured to be handled properly. Cc: Kalle Valo Link: https://lore.kernel.org/r/20210503115736.2104747-54-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/net/wireless/marvell/libertas/mesh.c | 28 +++----------------- 1 file changed, 4 insertions(+), 24 deletions(-) diff --git a/drivers/net/wireless/marvell/libertas/mesh.c b/drivers/net/wireless/marvell/libertas/mesh.c index d0c881dd5846..f1e9cbcfdc16 100644 --- a/drivers/net/wireless/marvell/libertas/mesh.c +++ b/drivers/net/wireless/marvell/libertas/mesh.c @@ -797,19 +797,6 @@ static const struct attribute_group mesh_ie_group = { .attrs = mesh_ie_attrs, }; -static void lbs_persist_config_init(struct net_device *dev) -{ - int ret; - ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group); - ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group); -} - -static void lbs_persist_config_remove(struct net_device *dev) -{ - sysfs_remove_group(&(dev->dev.kobj), &boot_opts_group); - sysfs_remove_group(&(dev->dev.kobj), &mesh_ie_group); -} - /*************************************************************************** * Initializing and starting, stopping mesh @@ -1021,6 +1008,10 @@ static int lbs_add_mesh(struct lbs_private *priv) SET_NETDEV_DEV(priv->mesh_dev, priv->dev->dev.parent); mesh_dev->flags |= IFF_BROADCAST | IFF_MULTICAST; + mesh_dev->sysfs_groups[0] = &lbs_mesh_attr_group; + mesh_dev->sysfs_groups[1] = &boot_opts_group; + mesh_dev->sysfs_groups[2] = &mesh_ie_group; + /* Register virtual mesh interface */ ret = register_netdev(mesh_dev); if (ret) { @@ -1028,19 +1019,10 @@ static int lbs_add_mesh(struct lbs_private *priv) goto err_free_netdev; } - ret = sysfs_create_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group); - if (ret) - goto err_unregister; - - lbs_persist_config_init(mesh_dev); - /* Everything successful */ ret = 0; goto done; -err_unregister: - unregister_netdev(mesh_dev); - err_free_netdev: free_netdev(mesh_dev); @@ -1063,8 +1045,6 @@ void lbs_remove_mesh(struct lbs_private *priv) lbs_deb_enter(LBS_DEB_MESH); netif_stop_queue(mesh_dev); netif_carrier_off(mesh_dev); - sysfs_remove_group(&(mesh_dev->dev.kobj), &lbs_mesh_attr_group); - lbs_persist_config_remove(mesh_dev); unregister_netdev(mesh_dev); priv->mesh_dev = NULL; kfree(mesh_dev->ieee80211_ptr); -- 2.30.2