From ac31585fca317b29b6b7093a5a6775137a852f94 Mon Sep 17 00:00:00 2001 From: Chunyan Zhang Date: Fri, 24 Jul 2020 20:21:48 +0800 Subject: power: supply: sc27xx: prevent adc * 1000 from overflow The input parameter is int type, cause adc * 1000 could overflow. Change to use s64 to avoid this issue. Signed-off-by: Chen Yongzhi Signed-off-by: Chunyan Zhang Signed-off-by: Sebastian Reichel --- drivers/power/supply/sc27xx_fuel_gauge.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c index be42e814ea34..9c627618c224 100644 --- a/drivers/power/supply/sc27xx_fuel_gauge.c +++ b/drivers/power/supply/sc27xx_fuel_gauge.c @@ -5,6 +5,7 @@ #include #include #include +#include #include #include #include @@ -133,14 +134,14 @@ static const char * const sc27xx_charger_supply_name[] = { "sc2723_charger", }; -static int sc27xx_fgu_adc_to_current(struct sc27xx_fgu_data *data, int adc) +static int sc27xx_fgu_adc_to_current(struct sc27xx_fgu_data *data, s64 adc) { - return DIV_ROUND_CLOSEST(adc * 1000, data->cur_1000ma_adc); + return DIV_S64_ROUND_CLOSEST(adc * 1000, data->cur_1000ma_adc); } -static int sc27xx_fgu_adc_to_voltage(struct sc27xx_fgu_data *data, int adc) +static int sc27xx_fgu_adc_to_voltage(struct sc27xx_fgu_data *data, s64 adc) { - return DIV_ROUND_CLOSEST(adc * 1000, data->vol_1000mv_adc); + return DIV_S64_ROUND_CLOSEST(adc * 1000, data->vol_1000mv_adc); } static int sc27xx_fgu_voltage_to_adc(struct sc27xx_fgu_data *data, int vol) -- cgit v1.2.3