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power: supply: max17042_battery: Improve accuracy of current_now and current_avg readings

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Dividing 1562500 by r_sns value usually doesn't result in an integer.

Signed-off-by: Sebastian Krzyszkowiak <sebastian.krzyszkowiak@puri.sm>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Sebastian Krzyszkowiak 2020-11-25 05:46:17 +01:00 committed by Sebastian Reichel
parent 4b0a56e692
commit 9e39ef1487
1 changed files with 4 additions and 4 deletions
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8
drivers/power/supply/max17042_battery.c
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@ -395,8 +395,8 @@ static int max17042_get_property(struct power_supply *psy,
if (ret < 0)
return ret;
val->intval = sign_extend32(data, 15);
val->intval *= 1562500 / chip->pdata->r_sns;
data64 = sign_extend64(data, 15) * 1562500ll;
val->intval = div_s64(data64, chip->pdata->r_sns);
} else {
return -EINVAL;
}
@ -407,8 +407,8 @@ static int max17042_get_property(struct power_supply *psy,
if (ret < 0)
return ret;
val->intval = sign_extend32(data, 15);
val->intval *= 1562500 / chip->pdata->r_sns;
data64 = sign_extend64(data, 15) * 1562500ll;
val->intval = div_s64(data64, chip->pdata->r_sns);
} else {
return -EINVAL;
}