1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 0f660af01a4b..195669f550f0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -1147,7 +1147,10 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
                 return ret;
         }
 
-        plat_dat->interface = of_get_phy_mode(dev->of_node);
+        ret = of_get_phy_mode(dev->of_node);
+        if (ret < 0)
+                return -EINVAL;
+        plat_dat->interface = ret;
 
         /* platform data specifying hardware features and callbacks.
          * hardware features were copied from Allwinner drivers.