diff options
Diffstat (limited to 'net/sched/sch_api.c')
| -rw-r--r-- | net/sched/sch_api.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c index 547b4a88ae2a..c31190e29b90 100644 --- a/net/sched/sch_api.c +++ b/net/sched/sch_api.c @@ -273,8 +273,11 @@ static struct Qdisc *qdisc_match_from_root(struct Qdisc *root, u32 handle) void qdisc_list_add(struct Qdisc *q) { + struct Qdisc *root = qdisc_dev(q)->qdisc; + + WARN_ON_ONCE(root == &noop_qdisc); if ((q->parent != TC_H_ROOT) && !(q->flags & TCQ_F_INGRESS)) - list_add_tail(&q->list, &qdisc_dev(q)->qdisc->list); + list_add_tail(&q->list, &root->list); } EXPORT_SYMBOL(qdisc_list_add); |