[PATCH v2 0/2] fix an overflow error on sc27xx power supply
From: Chunyan Zhang
Date: Fri Jul 24 2020 - 08:22:02 EST
From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx>
The patch 2/2 fixes an overflow error by changing to 64-bit divide operations.
In order to avoid compile error on 32-bit architectures, this patchset
also introduced a new 64-bit helper in patch 1/2.
Changes since v1: (https://lkml.org/lkml/2020/7/17/63)
- Added new help macro DIV_S64_ROUND_CLOSEST;
- Fixed an error reported by kernel test robot <lkp@xxxxxxxxx>.
Chunyan Zhang (2):
math64: New DIV_S64_ROUND_CLOSEST helper
power: supply: sc27xx: prevent adc * 1000 from overflow
drivers/power/supply/sc27xx_fuel_gauge.c | 9 +++++----
include/linux/math64.h | 19 +++++++++++++++++++
2 files changed, 24 insertions(+), 4 deletions(-)