asix: use ramdom hw addr if the one read is not valid

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: linux-usb@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 33ab824..7a6e758 100644 (file)
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -64,6 +64,16 @@ static void asix_status(struct usbnet *dev, struct urb *urb)
        }
 }
 
+static void asix_set_netdev_dev_addr(struct usbnet *dev, u8 *addr)
+{
+       if (is_valid_ether_addr(addr)) {
+               memcpy(dev->net->dev_addr, addr, ETH_ALEN);
+       } else {
+               netdev_info(dev->net, "invalid hw address, using random\n");
+               eth_hw_addr_random(dev->net);
+       }
+}
+
 /* Get the PHY Identifier from the PHYSID1 & PHYSID2 MII registers */
 static u32 asix_get_phyid(struct usbnet *dev)
 {
@@ -225,7 +235,8 @@ static int ax88172_bind(struct usbnet *dev, struct usb_interface *intf)
                           ret);
                goto out;
        }
-       memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+       asix_set_netdev_dev_addr(dev, buf);
 
        /* Initialize MII structure */
        dev->mii.dev = dev->net;
@@ -423,7 +434,8 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
                netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
                return ret;
        }
-       memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+       asix_set_netdev_dev_addr(dev, buf);
 
        /* Initialize MII structure */
        dev->mii.dev = dev->net;
@@ -777,7 +789,8 @@ static int ax88178_bind(struct usbnet *dev, struct usb_interface *intf)
                netdev_dbg(dev->net, "Failed to read MAC address: %d\n", ret);
                return ret;
        }
-       memcpy(dev->net->dev_addr, buf, ETH_ALEN);
+
+       asix_set_netdev_dev_addr(dev, buf);
 
        /* Initialize MII structure */
        dev->mii.dev = dev->net;