From: Florian Fainelli <f.fainelli@gmail.com>
Date: Wed, 25 Jan 2017 17:10:41 +0000 (-0800)
Subject: net: dsa: Bring back device detaching in dsa_slave_suspend()
X-Git-Tag: v4.4.47~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=384e4bf0def9092b8c30f025c6b29982e2e96c50;p=profile%2Fcommon%2Fplatform%2Fkernel%2Flinux-artik7.git

net: dsa: Bring back device detaching in dsa_slave_suspend()

[ Upstream commit f154be241d22298d2b63c9b613f619fa1086ea75 ]

Commit 448b4482c671 ("net: dsa: Add lockdep class to tx queues to avoid
lockdep splat") removed the netif_device_detach() call done in
dsa_slave_suspend() which is necessary, and paired with a corresponding
netif_device_attach(), bring it back.

Fixes: 448b4482c671 ("net: dsa: Add lockdep class to tx queues to avoid lockdep splat")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 7bc787b..8dfe9fb 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1101,6 +1101,8 @@ int dsa_slave_suspend(struct net_device *slave_dev)
 {
 	struct dsa_slave_priv *p = netdev_priv(slave_dev);
 
+	netif_device_detach(slave_dev);
+
 	if (p->phy) {
 		phy_stop(p->phy);
 		p->old_pause = -1;