[PATCH net-next v2 2/2] r8152: use eth_hw_addr_random

[Hayes Wang]

If the hw doesn't have a valid MAC address, give a random one and
set it to the hw.

Signed-off-by: Hayes Wang <hayesw...@realtek.com>
---
 drivers/net/usb/r8152.c | 35 ++++++++++++++++++++---------------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index b5ff933..443eb9e 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -992,32 +992,37 @@ static int rtl8152_set_mac_address(struct net_device 
*netdev, void *p)
        return 0;
 }
 
-static inline void set_ethernet_addr(struct r8152 *tp)
+static int set_ethernet_addr(struct r8152 *tp)
 {
        struct net_device *dev = tp->netdev;
+       struct sockaddr sa;
        int ret;
-       u8 node_id[8] = {0};
 
        if (tp->version == RTL_VER_01)
-               ret = pla_ocp_read(tp, PLA_IDR, sizeof(node_id), node_id);
+               ret = pla_ocp_read(tp, PLA_IDR, 8, sa.sa_data);
        else
-               ret = pla_ocp_read(tp, PLA_BACKUP, sizeof(node_id), node_id);
+               ret = pla_ocp_read(tp, PLA_BACKUP, 8, sa.sa_data);
 
        if (ret < 0) {
-               netif_notice(tp, probe, dev, "inet addr fail\n");
+               netif_err(tp, probe, dev, "Get ether addr fail\n");
+       } else if (!is_valid_ether_addr(sa.sa_data)) {
+               netif_err(tp, probe, dev, "Invalid ether addr %pM\n",
+                         sa.sa_data);
+               eth_hw_addr_random(dev);
+               ether_addr_copy(sa.sa_data, dev->dev_addr);
+               ret = rtl8152_set_mac_address(dev, &sa);
+               netif_info(tp, probe, dev, "Random ether addr %pM\n",
+                          sa.sa_data);
        } else {
-               if (tp->version != RTL_VER_01) {
-                       ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR,
-                                      CRWECR_CONFIG);
-                       pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES,
-                                     sizeof(node_id), node_id);
-                       ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR,
-                                      CRWECR_NORAML);
-               }
+               if (tp->version == RTL_VER_01)
+                       ether_addr_copy(dev->dev_addr, sa.sa_data);
+               else
+                       ret = rtl8152_set_mac_address(dev, &sa);
 
-               memcpy(dev->dev_addr, node_id, dev->addr_len);
-               memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
+               ether_addr_copy(dev->perm_addr, dev->dev_addr);
        }
+
+       return ret;
 }
 
 static void read_bulk_callback(struct urb *urb)
-- 
1.9.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/