net: phy: adjust fixed_phy_register() return value

Adjust fixed_phy_register() to return struct phy_device *, so that
it becomes easy to use fixed PHYs without device tree support:

  phydev = fixed_phy_register(PHY_POLL, &fixed_phy_status, NULL);
  fixed_phy_set_link_update(phydev, fixed_phy_link_update);
  phy_connect_direct(netdev, phydev, handler_fn, phy_interface);

This change is a prerequisite for modifying bcmgenet driver to work
without a device tree on Broadcom's MIPS-based 7xxx platforms.

Signed-off-by: Petri Gynther <pgynther@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index a85d80012993..1bd43053b8c7 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -286,6 +286,7 @@ int of_phy_register_fixed_link(struct device_node *np)
         struct device_node *fixed_link_node;
         const __be32 *fixed_link_prop;
         int len;
+        struct phy_device *phy;
 
         /* New binding */
         fixed_link_node = of_get_child_by_name(np, "fixed-link");
@@ -299,7 +300,8 @@ int of_phy_register_fixed_link(struct device_node *np)
                 status.asym_pause = of_property_read_bool(fixed_link_node,
                                                           "asym-pause");
                 of_node_put(fixed_link_node);
-                return fixed_phy_register(PHY_POLL, &status, np);
+                phy = fixed_phy_register(PHY_POLL, &status, np);
+                return IS_ERR(phy) ? PTR_ERR(phy) : 0;
         }
 
         /* Old binding */
@@ -310,7 +312,8 @@ int of_phy_register_fixed_link(struct device_node *np)
                 status.speed = be32_to_cpu(fixed_link_prop[2]);
                 status.pause = be32_to_cpu(fixed_link_prop[3]);
                 status.asym_pause = be32_to_cpu(fixed_link_prop[4]);
-                return fixed_phy_register(PHY_POLL, &status, np);
+                phy = fixed_phy_register(PHY_POLL, &status, np);
+                return IS_ERR(phy) ? PTR_ERR(phy) : 0;
         }
 
         return -ENODEV;