From 4552ff6cd5b7442005d7b12c2f4da43cad466d63 Mon Sep 17 00:00:00 2001
From: Helmut Schaa <helmut.schaa@googlemail.com>
Date: Mon, 27 May 2013 10:43:09 +0200
Subject: [PATCH] --- yaml --- r: 376656 b: refs/heads/master c:
 ac20976dcaeea3e77e40e9aac8f3799d2a22ea2b h: refs/heads/master v: v3

---
 [refs]                     |  2 +-
 trunk/net/mac80211/iface.c | 26 ++++++++++++++++++++------
 2 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/[refs] b/[refs]
index 05c27b8e7054..a47f8185dd12 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c8aa22db0112f640ac6631347f850879c621840b
+refs/heads/master: ac20976dcaeea3e77e40e9aac8f3799d2a22ea2b
diff --git a/trunk/net/mac80211/iface.c b/trunk/net/mac80211/iface.c
index ceef64426a8d..98d20c0f6fed 100644
--- a/trunk/net/mac80211/iface.c
+++ b/trunk/net/mac80211/iface.c
@@ -159,9 +159,10 @@ static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
 	return 0;
 }
 
-static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr)
+static int ieee80211_verify_mac(struct ieee80211_sub_if_data *sdata, u8 *addr)
 {
-	struct ieee80211_sub_if_data *sdata;
+	struct ieee80211_local *local = sdata->local;
+	struct ieee80211_sub_if_data *iter;
 	u64 new, mask, tmp;
 	u8 *m;
 	int ret = 0;
@@ -181,11 +182,14 @@ static int ieee80211_verify_mac(struct ieee80211_local *local, u8 *addr)
 
 
 	mutex_lock(&local->iflist_mtx);
-	list_for_each_entry(sdata, &local->interfaces, list) {
-		if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+	list_for_each_entry(iter, &local->interfaces, list) {
+		if (iter == sdata)
 			continue;
 
-		m = sdata->vif.addr;
+		if (iter->vif.type == NL80211_IFTYPE_MONITOR)
+			continue;
+
+		m = iter->vif.addr;
 		tmp =	((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
 			((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
 			((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);
@@ -209,7 +213,7 @@ static int ieee80211_change_mac(struct net_device *dev, void *addr)
 	if (ieee80211_sdata_running(sdata))
 		return -EBUSY;
 
-	ret = ieee80211_verify_mac(sdata->local, sa->sa_data);
+	ret = ieee80211_verify_mac(sdata, sa->sa_data);
 	if (ret)
 		return ret;
 
@@ -1486,7 +1490,17 @@ static void ieee80211_assign_perm_addr(struct ieee80211_local *local,
 			break;
 		}
 
+		/*
+		 * Pick address of existing interface in case user changed
+		 * MAC address manually, default to perm_addr.
+		 */
 		m = local->hw.wiphy->perm_addr;
+		list_for_each_entry(sdata, &local->interfaces, list) {
+			if (sdata->vif.type == NL80211_IFTYPE_MONITOR)
+				continue;
+			m = sdata->vif.addr;
+			break;
+		}
 		start = ((u64)m[0] << 5*8) | ((u64)m[1] << 4*8) |
 			((u64)m[2] << 3*8) | ((u64)m[3] << 2*8) |
 			((u64)m[4] << 1*8) | ((u64)m[5] << 0*8);