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authorJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>2012-11-21 21:35:17 +0000
committerDavid S. Miller <davem@davemloft.net>2012-11-23 14:29:51 -0500
commit452b5ecda0f99a15d6900dd9f845b8a0c09b5aca (patch)
tree4a43025c9b4b87892f6268a982ae53d899f49aca /drivers/net/usb
parent93272e07d8539cddce9a2a17b7b0de1326957599 (diff)
downloadlinux-452b5ecda0f99a15d6900dd9f845b8a0c09b5aca.tar.gz
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>
Diffstat (limited to 'drivers/net/usb')
-rw-r--r--drivers/net/usb/asix_devices.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 33ab824773c5..7a6e758f48e7 100644
--- 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;