diff options
| -rw-r--r-- | net/dsa/dsa2.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index 921a36fd139d..4e0f3c268103 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -312,6 +312,18 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds) if (err < 0) return err; + if (!ds->slave_mii_bus && ds->drv->phy_read) { + ds->slave_mii_bus = devm_mdiobus_alloc(ds->dev); + if (!ds->slave_mii_bus) + return -ENOMEM; + + dsa_slave_mii_bus_init(ds); + + err = mdiobus_register(ds->slave_mii_bus); + if (err < 0) + return err; + } + for (index = 0; index < DSA_MAX_PORTS; index++) { port = ds->ports[index].dn; if (!port) @@ -361,6 +373,9 @@ static void dsa_ds_unapply(struct dsa_switch_tree *dst, struct dsa_switch *ds) dsa_user_port_unapply(port, index, ds); } + + if (ds->slave_mii_bus && ds->drv->phy_read) + mdiobus_unregister(ds->slave_mii_bus); } static int dsa_dst_apply(struct dsa_switch_tree *dst) |