Originally, most of the platforms using this driver did not define an mdio
subnode
in the devicetree. Commit e34d65 ("stmmac: create of compatible mdio bus for
stmmac driver")
introduced a backward compatibily issue by using of_mdiobus_register explicitly
with an mdio subnode. This patch fixes the issue by calling the function
mdiobus_register, when mdio subnode is not found. The driver is now compatible
with both modes.
Signed-off-by: Romain Perier <romain.per...@gmail.com>
---
drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
index 16c85cc..0034de44 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
@@ -218,8 +218,7 @@ int stmmac_mdio_register(struct net_device *ndev)
if (mdio_node) {
netdev_dbg(ndev, "FOUND MDIO subnode\n");
} else {
- netdev_err(ndev, "NO MDIO subnode\n");
- return 0;
+ netdev_warn(ndev, "No MDIO subnode found\n");
}
}
@@ -251,7 +250,10 @@ int stmmac_mdio_register(struct net_device *ndev)
new_bus->phy_mask = mdio_bus_data->phy_mask;
new_bus->parent = priv->device;
- err = of_mdiobus_register(new_bus, mdio_node);
+ if (IS_ENABLED(CONFIG_OF) && mdio_node)
+ err = of_mdiobus_register(new_bus, mdio_node);
+ else
+ err = mdiobus_register(new_bus);
if (err != 0) {
pr_err("%s: Cannot register as MDIO bus\n", new_bus->name);
goto bus_register_fail;
--
2.5.0
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
