linux-kernel - Re: [PATCH v2 0/2] fix an overflow error on sc27xx power supply

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Message-ID: <20200727231459.6gbmii5hfzcqsmm7@earth.universe>
Date:   Tue, 28 Jul 2020 01:14:59 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     Chunyan Zhang <zhang.lyra@...il.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>,
        Chen Yongzhi <yongzhi.chen@...soc.com>
Subject: Re: [PATCH v2 0/2] fix an overflow error on sc27xx power supply

Hi,

On Fri, Jul 24, 2020 at 08:21:46PM +0800, Chunyan Zhang wrote:
> From: Chunyan Zhang <chunyan.zhang@...soc.com>
> 
> 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@...el.com>.
> 
> 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(-)

Thanks, queued.

-- Sebastian

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