1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/net/phy/mdio-gpio.c b/drivers/net/phy/mdio-gpio.c
index c9cb486c753d..53d18150f4e2 100644
--- a/drivers/net/phy/mdio-gpio.c
+++ b/drivers/net/phy/mdio-gpio.c
@@ -168,7 +168,10 @@ static struct mii_bus *mdio_gpio_bus_init(struct device *dev,
                 if (!new_bus->irq[i])
                         new_bus->irq[i] = PHY_POLL;
 
-        snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
+        if (bus_id != -1)
+                snprintf(new_bus->id, MII_BUS_ID_SIZE, "gpio-%x", bus_id);
+        else
+                strncpy(new_bus->id, "gpio", MII_BUS_ID_SIZE);
 
         if (devm_gpio_request(dev, bitbang->mdc, "mdc"))
                 goto out_free_bus;