of: check for IS_ERR()

get_phy_device() can return an ERR_PTR()

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index 18ecae4..b474833 100644 (file)
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -69,7 +69,7 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
                }
 
                phy = get_phy_device(mdio, be32_to_cpup(addr));
-               if (!phy) {
+               if (!phy || IS_ERR(phy)) {
                        dev_err(&mdio->dev, "error probing PHY at address %i\n",
                                *addr);
                        continue;