[PATCH wpan-next 09/12] mac802154: remove useless -EBUSY if sdata running

[Alexander Aring <alex.aring@gmail.com>]

The slave_open function is only called by ndo_open callback. This
callback is already protected to do a ip link set wpan0 up twice.
This patch removing also a unnecessary for each loop to find the right
entry which is already known.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
 net/mac802154/iface.c | 13 -------------
 1 file changed, 13 deletions(-)

diff --git a/net/mac802154/iface.c b/net/mac802154/iface.c
index ae774d3..ab23246 100644
--- a/net/mac802154/iface.c
+++ b/net/mac802154/iface.c
@@ -35,24 +35,11 @@
 static int mac802154_slave_open(struct net_device *dev)
 {
 	struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev);
-	struct ieee802154_sub_if_data *subif;
 	struct ieee802154_local *local = sdata->local;
 	int res = 0;
 
 	ASSERT_RTNL();
 
-	if (sdata->type == NL802154_IFTYPE_NODE) {
-		mutex_lock(&sdata->local->iflist_mtx);
-		list_for_each_entry(subif, &sdata->local->interfaces, list) {
-			if (subif != sdata && subif->type == sdata->type &&
-			    subif->running) {
-				mutex_unlock(&sdata->local->iflist_mtx);
-				return -EBUSY;
-			}
-		}
-		mutex_unlock(&sdata->local->iflist_mtx);
-	}
-
 	mutex_lock(&sdata->local->iflist_mtx);
 	sdata->running = true;
 	mutex_unlock(&sdata->local->iflist_mtx);
-- 
2.0.3