This is a note to let you know that I've just added the patch titled
net: openvswitch: use div_u64() for 64-by-32 divisions
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-openvswitch-use-div_u64-for-64-by-32-divisions.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 2d5ae92ce71c2c67f76abc881b9babcef87b7222
Author: Tonghao Zhang <xiangxia.m.yue@xxxxxxxxx>
Date: Sat Apr 25 11:39:48 2020 +0800
net: openvswitch: use div_u64() for 64-by-32 divisions
[ Upstream commit 659d4587fe7233bfdff303744b20d6f41ad04362 ]
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@xxxxxxxxx>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@xxxxxxxxx>
Tested-by: Tonghao Zhang <xiangxia.m.yue@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index b10734f18bbd6..541eea74ef7a6 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -252,7 +252,7 @@ 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++;
