From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35248 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404424AbeHGVQX (ORCPT ); Tue, 7 Aug 2018 17:16:23 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Florian Fainelli , Andrew Lunn , "David S. Miller" Subject: [PATCH 3.18 75/85] net: dsa: Do not suspend/resume closed slave_dev Date: Tue, 7 Aug 2018 20:52:17 +0200 Message-Id: <20180807172400.142527956@linuxfoundation.org> In-Reply-To: <20180807172357.357252052@linuxfoundation.org> References: <20180807172357.357252052@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Fainelli [ Upstream commit a94c689e6c9e72e722f28339e12dff191ee5a265 ] If a DSA slave network device was previously disabled, there is no need to suspend or resume it. Fixes: 2446254915a7 ("net: dsa: allow switch drivers to implement suspend/resume hooks") Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/dsa/slave.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -503,6 +503,9 @@ int dsa_slave_suspend(struct net_device { struct dsa_slave_priv *p = netdev_priv(slave_dev); + if (!netif_running(slave_dev)) + return 0; + netif_device_detach(slave_dev); if (p->phy) { @@ -520,6 +523,9 @@ int dsa_slave_resume(struct net_device * { struct dsa_slave_priv *p = netdev_priv(slave_dev); + if (!netif_running(slave_dev)) + return 0; + netif_device_attach(slave_dev); if (p->phy) {