diff options
| author | Guenter Roeck <linux@roeck-us.net> | 2014-07-17 04:40:31 +0400 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2014-07-17 08:18:47 +0400 |
| commit | de12d6f4b10b21854441f5242dcb29ea96181e58 (patch) | |
| tree | bd197e8e568310bb71c6469f7d9242ed8b056df1 /drivers/hwmon/adt7470.c | |
| parent | 6b00f440dd678d786389a7100a2e03fe44478431 (diff) | |
| download | linux-de12d6f4b10b21854441f5242dcb29ea96181e58.tar.xz | |
hwmon: (adt7470) Fix writes to temperature limit registers
Temperature limit registers are signed. Limits therefore need
to be clamped to (-128, 127) degrees C and not to (0, 255)
degrees C.
Without this fix, writing a limit of 128 degrees C sets the
actual limit to -128 degrees C.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Reviewed-by: Axel Lin <axel.lin@ingics.com>
Diffstat (limited to 'drivers/hwmon/adt7470.c')
| -rw-r--r-- | drivers/hwmon/adt7470.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/hwmon/adt7470.c b/drivers/hwmon/adt7470.c index 0f4dea5ccf17..9ee3913850d6 100644 --- a/drivers/hwmon/adt7470.c +++ b/drivers/hwmon/adt7470.c @@ -515,7 +515,7 @@ static ssize_t set_temp_min(struct device *dev, return -EINVAL; temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, 0, 255); + temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->temp_min[attr->index] = temp; @@ -549,7 +549,7 @@ static ssize_t set_temp_max(struct device *dev, return -EINVAL; temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, 0, 255); + temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->temp_max[attr->index] = temp; @@ -826,7 +826,7 @@ static ssize_t set_pwm_tmin(struct device *dev, return -EINVAL; temp = DIV_ROUND_CLOSEST(temp, 1000); - temp = clamp_val(temp, 0, 255); + temp = clamp_val(temp, -128, 127); mutex_lock(&data->lock); data->pwm_tmin[attr->index] = temp; |