ll_temac: fix mac address setting

Previously, when invalid address was passed to ndo_set_mac_address,
random mac was generated and set. Fix this by returning -EADDRNOTAVAIL
in this situation.

Also polish the code around a bit.

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c
index aad909d..5022093 100644 (file)
--- a/drivers/net/ethernet/xilinx/ll_temac_main.c
+++ b/drivers/net/ethernet/xilinx/ll_temac_main.c
@@ -319,18 +319,10 @@ out:
  * net_device_ops
  */
 
-static int temac_set_mac_address(struct net_device *ndev, void *address)
+static void temac_do_set_mac_address(struct net_device *ndev)
 {
        struct temac_local *lp = netdev_priv(ndev);
 
-       if (address)
-               memcpy(ndev->dev_addr, address, ETH_ALEN);
-
-       if (!is_valid_ether_addr(ndev->dev_addr))
-               eth_hw_addr_random(ndev);
-       else
-               ndev->addr_assign_type &= ~NET_ADDR_RANDOM;
-
        /* set up unicast MAC address filter set its mac address */
        mutex_lock(&lp->indirect_mutex);
        temac_indirect_out32(lp, XTE_UAW0_OFFSET,
@@ -344,15 +336,26 @@ static int temac_set_mac_address(struct net_device *ndev, void *address)
                             (ndev->dev_addr[4] & 0x000000ff) |
                             (ndev->dev_addr[5] << 8));
        mutex_unlock(&lp->indirect_mutex);
+}
 
+static int temac_init_mac_address(struct net_device *ndev, void *address)
+{
+       memcpy(ndev->dev_addr, address, ETH_ALEN);
+       if (!is_valid_ether_addr(ndev->dev_addr))
+               eth_hw_addr_random(ndev);
+       temac_do_set_mac_address(ndev);
        return 0;
 }
 
-static int netdev_set_mac_address(struct net_device *ndev, void *p)
+static int temac_set_mac_address(struct net_device *ndev, void *p)
 {
        struct sockaddr *addr = p;
 
-       return temac_set_mac_address(ndev, addr->sa_data);
+       if (!is_valid_ether_addr(addr->sa_data))
+               return -EADDRNOTAVAIL;
+       memcpy(ndev->dev_addr, addr->sa_data, ETH_ALEN);
+       temac_do_set_mac_address(ndev);
+       return 0;
 }
 
 static void temac_set_multicast_list(struct net_device *ndev)
@@ -579,7 +582,7 @@ static void temac_device_reset(struct net_device *ndev)
        temac_setoptions(ndev,
                         lp->options & ~(XTE_OPTION_TXEN | XTE_OPTION_RXEN));
 
-       temac_set_mac_address(ndev, NULL);
+       temac_do_set_mac_address(ndev);
 
        /* Set address filter table */
        temac_set_multicast_list(ndev);
@@ -938,7 +941,7 @@ static const struct net_device_ops temac_netdev_ops = {
        .ndo_open = temac_open,
        .ndo_stop = temac_stop,
        .ndo_start_xmit = temac_start_xmit,
-       .ndo_set_mac_address = netdev_set_mac_address,
+       .ndo_set_mac_address = temac_set_mac_address,
        .ndo_validate_addr = eth_validate_addr,
        .ndo_do_ioctl = temac_ioctl,
 #ifdef CONFIG_NET_POLL_CONTROLLER
@@ -1106,7 +1109,7 @@ static int temac_of_probe(struct platform_device *op)
                rc = -ENODEV;
                goto err_iounmap_2;
        }
-       temac_set_mac_address(ndev, (void *)addr);
+       temac_init_mac_address(ndev, (void *)addr);
 
        rc = temac_mdio_setup(lp, op->dev.of_node);
        if (rc)