netdev - [PATCH net-next] net: sched: pie: fix 64-bit division

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Date:   Wed, 27 Feb 2019 06:30:06 +0530
From:   Leslie Monis <lesliemonis@...il.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Leslie Monis <lesliemonis@...il.com>
Subject: [PATCH net-next] net: sched: pie: fix 64-bit division

Use div_u64() to resolve build failures on 32-bit platforms.

Fixes: 3f7ae5f3dc52 ("net: sched: pie: add more cases to auto-tune alpha and beta")
Signed-off-by: Leslie Monis <lesliemonis@...il.com>
---
 net/sched/sch_pie.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index 4c0670b6aec1..f93cfe034c72 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -429,7 +429,7 @@ static void calculate_probability(struct Qdisc *sch)
 	 */
 
 	if (qdelay == 0 && qdelay_old == 0 && update_prob)
-		q->vars.prob = (q->vars.prob * 98) / 100;
+		q->vars.prob = 98 * div_u64(q->vars.prob, 100);
 
 	q->vars.qdelay = qdelay;
 	q->vars.qlen_old = qlen;
-- 
2.17.1