net: dsa: retain a per-port device_node pointer

We will later use the per-port device_node pointer to fetch a bunch of
port-specific properties.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 3 insertions, 0 deletions

diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index a28ef432d016..6a5bae673037 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -432,6 +432,8 @@ static int dsa_of_probe(struct platform_device *pdev)
                         if (!port_name)
                                 continue;
 
+                        cd->port_dn[port_index] = port;
+
                         cd->port_names[port_index] = kstrdup(port_name,
                                         GFP_KERNEL);
                         if (!cd->port_names[port_index]) {
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index ad1a913533aa..5688c34253e5 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -354,6 +354,7 @@ dsa_slave_create(struct dsa_switch *ds, struct device *parent,
         }
 
         SET_NETDEV_DEV(slave_dev, parent);
+        slave_dev->dev.of_node = ds->pd->port_dn[port];
         slave_dev->vlan_features = master->vlan_features;
 
         p = netdev_priv(slave_dev);