net: dsa: propagate error code from dsa_slave_phy_setup
In case we cannot attach to our slave netdevice PHY, error out and
propagate that error up to the caller: dsa_slave_create().
Fixes: 0d8bcdd383b8 ("net: dsa: allow for more complex PHY setups")
Signed-off-by: Andrey Volkov <andrey.volkov@nexvision.fr>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index da64ba9..515569f 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -512,7 +512,7 @@
}
/* slave device setup *******************************************************/
-static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
+static int dsa_slave_phy_setup(struct dsa_slave_priv *p,
struct net_device *slave_dev)
{
struct dsa_switch *ds = p->parent;
@@ -533,7 +533,7 @@
ret = of_phy_register_fixed_link(port_dn);
if (ret) {
netdev_err(slave_dev, "failed to register fixed PHY\n");
- return;
+ return ret;
}
phy_is_fixed = true;
phy_dn = port_dn;
@@ -556,7 +556,7 @@
if (!p->phy) {
p->phy = ds->slave_mii_bus->phy_map[p->port];
if (!p->phy)
- return;
+ return -ENODEV;
phy_connect_direct(slave_dev, p->phy, dsa_slave_adjust_link,
p->phy_interface);
@@ -564,6 +564,8 @@
netdev_info(slave_dev, "attached PHY at address %d [%s]\n",
p->phy->addr, p->phy->drv->name);
}
+
+ return 0;
}
int dsa_slave_suspend(struct net_device *slave_dev)
@@ -656,12 +658,17 @@
p->old_link = -1;
p->old_duplex = -1;
- dsa_slave_phy_setup(p, slave_dev);
+ ret = dsa_slave_phy_setup(p, slave_dev);
+ if (ret) {
+ free_netdev(slave_dev);
+ return NULL;
+ }
ret = register_netdev(slave_dev);
if (ret) {
netdev_err(master, "error %d registering interface %s\n",
ret, slave_dev->name);
+ phy_disconnect(p->phy);
free_netdev(slave_dev);
return NULL;
}