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Date: Thu, 12 Dec 2013 10:22:03 +0800
From: Yang Yingliang <yangyingliang@...wei.com>
To: <davem@...emloft.net>, <netdev@...r.kernel.org>
Subject: [PATCH net] sch_tbf: use do_div() for 64-bit divide
It's doing a 64-bit divide which is not supported
on 32-bit architectures in psched_ns_t2l(). The
correct way to do this is to use do_div().
Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
net/sched/sch_tbf.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/sched/sch_tbf.c b/net/sched/sch_tbf.c
index a44928c..887e672 100644
--- a/net/sched/sch_tbf.c
+++ b/net/sched/sch_tbf.c
@@ -131,8 +131,10 @@ static u64 psched_ns_t2l(const struct psched_ratecfg *r,
do_div(len, NSEC_PER_SEC);
- if (unlikely(r->linklayer == TC_LINKLAYER_ATM))
- len = (len / 53) * 48;
+ if (unlikely(r->linklayer == TC_LINKLAYER_ATM)) {
+ do_div(len, 53);
+ len = len * 48;
+ }
if (len > r->overhead)
len -= r->overhead;
--
1.8.0
--
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