From 659d4587fe7233bfdff303744b20d6f41ad04362 Mon Sep 17 00:00:00 2001
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Date: Sat, 25 Apr 2020 11:39:48 +0800
Subject: [PATCH] net: openvswitch: use div_u64() for 64-by-32 divisions
Compile the kernel for arm 32 platform, the build warning found.
To fix that, should use div_u64() for divisions.
| net/openvswitch/meter.c:396: undefined reference to `__udivdi3'
[add more commit msg, change reported tag, and use div_u64 instead
of do_div by Tonghao]
Fixes: e57358873bb5d6ca ("net: openvswitch: use u64 for meter bucket")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Tested-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/openvswitch/meter.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index 612ad5586ce9..3d3d8e094546 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -393,7 +393,7 @@ static struct dp_meter *dp_meter_create(struct nlattr **a)
* Start with a full bucket.
*/
band->bucket = (band->burst_size + band->rate) * 1000ULL;
- band_max_delta_t = band->bucket / band->rate;
+ band_max_delta_t = div_u64(band->bucket, band->rate);
if (band_max_delta_t > meter->max_delta_t)
meter->max_delta_t = band_max_delta_t;
band++;