mac80211: fix use before check of Qdisc length

This patch fixes use of Qdisc length in requeue function, before we checked
the reference is valid. (Adrian Bunk's catch)

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/net/mac80211/wme.c b/net/mac80211/wme.c
index 4e94e40..64faa3d 100644 (file)
--- a/net/mac80211/wme.c
+++ b/net/mac80211/wme.c
@@ -709,7 +709,7 @@ void ieee80211_requeue(struct ieee80211_local *local, int queue)
        struct ieee80211_sched_data *q = qdisc_priv(root_qd);
        struct Qdisc *qdisc = q->queues[queue];
        struct sk_buff *skb = NULL;
-       u32 len = qdisc->q.qlen;
+       u32 len;
 
        if (!qdisc || !qdisc->dequeue)
                return;