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authorGuenter Roeck <linux@roeck-us.net>2016-12-03 22:10:34 +0300
committerGuenter Roeck <linux@roeck-us.net>2016-12-10 08:54:32 +0300
commit64bd708ae0edced5eee764c2321b280bc1e16550 (patch)
tree4b07a781cd168dd86fa3e5905ed5a605e2262c5c /drivers/hwmon/adt7470.c
parentb94793b4da1011f24321e2ecc5e173a7198358a5 (diff)
downloadlinux-64bd708ae0edced5eee764c2321b280bc1e16550.tar.xz
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 <jdelvare@suse.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/adt7470.c')
-rw-r--r--drivers/hwmon/adt7470.c6
1 files changed, 3 insertions, 3 deletions
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;