[TG3]: Reset chip when changing MAC address

Do the full chip reset when changing MAC address if ASF is enabled.

ASF sometimes uses a different MAC address than the driver. Without
the reset, the ASF MAC address may be overwritten when the driver's
MAC address is changed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 3 deletions

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index a30734061700..0ccfb63d3ac1 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -5732,9 +5732,23 @@ static int tg3_set_mac_addr(struct net_device *dev, void *p)
         if (!netif_running(dev))
                 return 0;
 
-        spin_lock_bh(&tp->lock);
-        __tg3_set_mac_addr(tp);
-        spin_unlock_bh(&tp->lock);
+        if (tp->tg3_flags & TG3_FLAG_ENABLE_ASF) {
+                /* Reset chip so that ASF can re-init any MAC addresses it
+                 * needs.
+                 */
+                tg3_netif_stop(tp);
+                tg3_full_lock(tp, 1);
+
+                tg3_halt(tp, RESET_KIND_SHUTDOWN, 1);
+                tg3_init_hw(tp);
+
+                tg3_netif_start(tp);
+                tg3_full_unlock(tp);
+        } else {
+                spin_lock_bh(&tp->lock);
+                __tg3_set_mac_addr(tp);
+                spin_unlock_bh(&tp->lock);
+        }
 
         return 0;
 }