From: Michael Chan <mchan@broadcom.com>
Date: Sun, 30 Apr 2006 01:58:01 +0000 (-0700)
Subject: [TG3]: Reset chip when changing MAC address
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=58712ef9f2cbaaeac5b32ac11810a4bbd0eeacc5;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

[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>
---

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;
 }