Backmerge tag 'v4.9-rc8' into drm-next

Linux 4.9-rc8

Daniel requested this so we could apply some follow on fixes cleanly to -next.

1 files changed, 16 insertions, 3 deletions

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 6b1282c006b1..30e2e21d7619 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1125,7 +1125,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
 	p->phy_interface = mode;
 
 	phy_dn = of_parse_phandle(port_dn, "phy-handle", 0);
-	if (of_phy_is_fixed_link(port_dn)) {
+	if (!phy_dn && of_phy_is_fixed_link(port_dn)) {
 		/* In the case of a fixed PHY, the DT node associated
 		 * to the fixed PHY is the Port DT node
 		 */
@@ -1135,7 +1135,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
 			return ret;
 		}
 		phy_is_fixed = true;
-		phy_dn = port_dn;
+		phy_dn = of_node_get(port_dn);
 	}
 
 	if (ds->ops->get_phy_flags)
@@ -1154,6 +1154,7 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
 			ret = dsa_slave_phy_connect(p, slave_dev, phy_id);
 			if (ret) {
 				netdev_err(slave_dev, "failed to connect to phy%d: %d\n", phy_id, ret);
+				of_node_put(phy_dn);
 				return ret;
 			}
 		} else {
@@ -1162,6 +1163,8 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
 						phy_flags,
 						p->phy_interface);
 		}
+
+		of_node_put(phy_dn);
 	}
 
 	if (p->phy && phy_is_fixed)
@@ -1174,6 +1177,8 @@ static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
 		ret = dsa_slave_phy_connect(p, slave_dev, p->port);
 		if (ret) {
 			netdev_err(slave_dev, "failed to connect to port %d: %d\n", p->port, ret);
+			if (phy_is_fixed)
+				of_phy_deregister_fixed_link(port_dn);
 			return ret;
 		}
 	}
@@ -1289,10 +1294,18 @@ int dsa_slave_create(struct dsa_switch *ds, struct device *parent,
 void dsa_slave_destroy(struct net_device *slave_dev)
 {
 	struct dsa_slave_priv *p = netdev_priv(slave_dev);
+	struct dsa_switch *ds = p->parent;
+	struct device_node *port_dn;
+
+	port_dn = ds->ports[p->port].dn;
 
 	netif_carrier_off(slave_dev);
-	if (p->phy)
+	if (p->phy) {
 		phy_disconnect(p->phy);
+
+		if (of_phy_is_fixed_link(port_dn))
+			of_phy_deregister_fixed_link(port_dn);
+	}
 	unregister_netdev(slave_dev);
 	free_netdev(slave_dev);
 }