pkt_sched: Fix "parent is root" test in qdisc_create().

As noticed by Stephen Hemminger, the root qdisc is denoted by
TC_H_ROOT, not zero.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 4840aff4725..83b23b55ce3 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -792,7 +792,7 @@ qdisc_create(struct net_device *dev, struct netdev_queue *dev_queue,
                                 goto err_out3;
                         }
                 }
-                if (parent && !(sch->flags & TCQ_F_INGRESS))
+                if ((parent != TC_H_ROOT) && !(sch->flags & TCQ_F_INGRESS))
                         list_add_tail(&sch->list, &dev_queue->qdisc->list);
 
                 return sch;