1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 9bc11773705b..7c9e6e349503 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -406,6 +406,9 @@ int phy_mii_ioctl(struct phy_device *phydev,
                                 && phydev->drv->config_init)
                         phydev->drv->config_init(phydev);
                 break;
+
+        default:
+                return -ENOTTY;
         }
 
         return 0;