openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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().

It's introduced by commit cc106e441a
("net: sched: tbf: fix the calculation of max_size")

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yang Yingliang 2013-12-12 10:57:22 +08:00 committed by David S. Miller
parent 9750223102
commit d55d282e6a
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
net/sched/sch_tbf.c
View File

@ -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;