1 files changed, 5 insertions, 7 deletions

diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 43bdb1372cae..f91e5d472c60 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -767,7 +767,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
 {
         struct cfg80211_registered_device *drv;
         struct vif_params params;
-        int err, ifindex;
+        int err;
         enum nl80211_iftype otype, ntype;
         struct net_device *dev;
         u32 _flags, *flags = NULL;
@@ -781,9 +781,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
         if (err)
                 goto unlock_rtnl;
 
-        ifindex = dev->ifindex;
         otype = ntype = dev->ieee80211_ptr->iftype;
-        dev_put(dev);
 
         if (info->attrs[NL80211_ATTR_IFTYPE]) {
                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
@@ -826,20 +824,20 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
         }
 
         if (change)
-                err = drv->ops->change_virtual_intf(&drv->wiphy, ifindex,
+                err = drv->ops->change_virtual_intf(&drv->wiphy, dev,
                                                     ntype, flags, &params);
         else
                 err = 0;
 
-        dev = __dev_get_by_index(&init_net, ifindex);
-        WARN_ON(!dev || (!err && dev->ieee80211_ptr->iftype != ntype));
+        WARN_ON(!err && dev->ieee80211_ptr->iftype != ntype);
 
-        if (dev && !err && (ntype != otype)) {
+        if (!err && (ntype != otype)) {
                 if (otype == NL80211_IFTYPE_ADHOC)
                         cfg80211_clear_ibss(dev, false);
         }
 
  unlock:
+        dev_put(dev);
         cfg80211_put_dev(drv);
  unlock_rtnl:
         rtnl_unlock();