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-rw-r--r--net/sched/sch_api.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 83984be04f57..0d99df1e764d 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -625,8 +625,13 @@ void qdisc_watchdog_schedule_range_ns(struct qdisc_watchdog *wd, u64 expires,
&qdisc_root_sleeping(wd->qdisc)->state))
return;
- if (wd->last_expires == expires)
- return;
+ if (hrtimer_is_queued(&wd->timer)) {
+ /* If timer is already set in [expires, expires + delta_ns],
+ * do not reprogram it.
+ */
+ if (wd->last_expires - expires <= delta_ns)
+ return;
+ }
wd->last_expires = expires;
hrtimer_start_range_ns(&wd->timer,