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-rw-r--r--net/sched/sch_api.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8ed2f56..408eea7 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -161,7 +161,7 @@ int register_qdisc(struct Qdisc_ops *qops)
if (qops->cl_ops) {
const struct Qdisc_class_ops *cops = qops->cl_ops;
- if (!(cops->get && cops->put))
+ if (!(cops->get && cops->put && cops->walk && cops->leaf))
goto out_einval;
if (cops->tcf_chain && !(cops->bind_tcf && cops->unbind_tcf))