[PATCH net-next v4 3/6] net: dsa: Provide a slave MII bus if needed
From: Florian Fainelli <f.fainelli@gmail.com>
Date: 2016-06-07 23:32:57
Subsystem:
networking [dsa], networking [general], the rest · Maintainers:
Andrew Lunn, Vladimir Oltean, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Mimic what net/dsa/dsa.c does and provide a slave MII bus by default which will be created if the driver implements a phy_read method. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vivien Didelot <redacted> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> --- net/dsa/dsa2.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
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)
--
2.7.4