[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.bu...@nxp.com>
---
 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