[PATCH net] of_mdio: avoid MDIO bus removal when a PHY is missing

[Madalin Bucur]

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: Madalin Bucur <madalin.bucur@xxxxxxx>
---
 drivers/of/of_mdio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 3481e69..93d41275 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -231,7 +231,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
 			rc = of_mdiobus_register_phy(mdio, child, addr);
 		else
 			rc = of_mdiobus_register_device(mdio, child, addr);
-		if (rc)
+		if (rc && rc != -ENODEV)
 			goto unregister;
 	}
 
@@ -255,7 +255,7 @@ 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;
 			}
 		}
-- 
2.1.0