From 64bd708ae0edced5eee764c2321b280bc1e16550 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sat, 3 Dec 2016 11:10:34 -0800 Subject: hwmon: (adt7470) Fix overflows seen when writing into limit attributes Fix overflows seen when writing large values into various temperature limit attributes. The input value passed to DIV_ROUND_CLOSEST() needs to be clamped to avoid such overflows. Reviewed-by: Jean Delvare Signed-off-by: Guenter Roeck --- drivers/hwmon/adt7470.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/hwmon') diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c index 6e60ca53406e..c9a1d9c25572 100644 --- a/drivers/hwmon/adt7470.c +++ b/drivers/hwmon/adt7470.c @@ -483,8 +483,8 @@ static ssize_t set_temp_min(struct device *dev, if (kstrtol(buf, 10, &temp)) return -EINVAL; + temp = clamp_val(temp, -128000, 127000); temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->temp_min[attr->index] = temp; @@ -517,8 +517,8 @@ static ssize_t set_temp_max(struct device *dev, if (kstrtol(buf, 10, &temp)) return -EINVAL; + temp = clamp_val(temp, -128000, 127000); temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->temp_max[attr->index] = temp; @@ -880,8 +880,8 @@ static ssize_t set_pwm_tmin(struct device *dev, if (kstrtol(buf, 10, &temp)) return -EINVAL; + temp = clamp_val(temp, -128000, 127000); temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->pwm_tmin[attr->index] = temp; -- cgit