[NET_SCHED]: sch_htb: fix event cache time calculation

The event cache time must be an absolute value, when no event exists
it is incorrectly set to 1s instead of 1s in the future.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 99bcec8dd04c..035788c5b7f8 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -976,8 +976,9 @@ static struct sk_buff *htb_dequeue(struct Qdisc *sch)
 
                 if (q->now >= q->near_ev_cache[level]) {
                         event = htb_do_events(q, level);
-                        q->near_ev_cache[level] = event ? event :
-                                                          PSCHED_TICKS_PER_SEC;
+                        if (!event)
+                                event = q->now + PSCHED_TICKS_PER_SEC;
+                        q->near_ev_cache[level] = event;
                 } else
                         event = q->near_ev_cache[level];