Commit 95f566de authored by Madalin Bucur's avatar Madalin Bucur Committed by David S. Miller
Browse files

of_mdio: avoid MDIO bus removal when a PHY is missing

If one of the child devices is missing the of_mdiobus_register_phy()
call will return -ENODEV. When a missing device is encountered the
registration of the remaining PHYs is stopped and the MDIO bus will
fail to register. Propagate all errors except ENODEV to avoid it.

Signed-off-by: default avatarMadalin Bucur <>
Reviewed-by: default avatarAndrew Lunn <>
Signed-off-by: default avatarDavid S. Miller <>
parent b0d55b5b
......@@ -231,7 +231,12 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
rc = of_mdiobus_register_phy(mdio, child, addr);
rc = of_mdiobus_register_device(mdio, child, addr);
if (rc)
if (rc == -ENODEV)
"MDIO device at address %d is missing.\n",
else if (rc)
goto unregister;
......@@ -255,7 +260,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
if (of_mdiobus_child_is_phy(child)) {
rc = of_mdiobus_register_phy(mdio, child, addr);
if (rc)
if (rc && rc != -ENODEV)
goto unregister;
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