1 files changed, 10 insertions, 2 deletions

diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index 03ca5d826757..ba749be1e354 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -317,8 +317,16 @@ extern void tcf_destroy_chain(struct tcf_proto **fl);
 static inline void qdisc_reset_all_tx(struct net_device *dev)
 {
         unsigned int i;
-        for (i = 0; i < dev->num_tx_queues; i++)
-                qdisc_reset(netdev_get_tx_queue(dev, i)->qdisc);
+        struct Qdisc *qdisc;
+
+        for (i = 0; i < dev->num_tx_queues; i++) {
+                qdisc = netdev_get_tx_queue(dev, i)->qdisc;
+                if (qdisc) {
+                        spin_lock_bh(qdisc_lock(qdisc));
+                        qdisc_reset(qdisc);
+                        spin_unlock_bh(qdisc_lock(qdisc));
+                }
+        }
 }
 
 /* Are all TX queues of the device empty?  */