diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/max17042_battery.c | 24 |
1 files changed, 3 insertions, 21 deletions
diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c index da7a75f82489..790dfa9d0a2e 100644 --- a/drivers/power/supply/max17042_battery.c +++ b/drivers/power/supply/max17042_battery.c @@ -106,13 +106,7 @@ static int max17042_get_temperature(struct max17042_chip *chip, int *temp) if (ret < 0) return ret; - *temp = data; - /* The value is signed. */ - if (*temp & 0x8000) { - *temp = (0x7fff & ~*temp) + 1; - *temp *= -1; - } - + *temp = sign_extend32(data, 15); /* The value is converted into deci-centigrade scale */ /* Units of LSB = 1 / 256 degree Celsius */ *temp = *temp * 10 / 256; @@ -302,13 +296,7 @@ static int max17042_get_property(struct power_supply *psy, if (ret < 0) return ret; - val->intval = data; - if (val->intval & 0x8000) { - /* Negative */ - val->intval = ~val->intval & 0x7fff; - val->intval++; - val->intval *= -1; - } + val->intval = sign_extend32(data, 15); val->intval *= 1562500 / chip->pdata->r_sns; } else { return -EINVAL; @@ -320,13 +308,7 @@ static int max17042_get_property(struct power_supply *psy, if (ret < 0) return ret; - val->intval = data; - if (val->intval & 0x8000) { - /* Negative */ - val->intval = ~val->intval & 0x7fff; - val->intval++; - val->intval *= -1; - } + val->intval = sign_extend32(data, 15); val->intval *= 1562500 / chip->pdata->r_sns; } else { return -EINVAL; |