The following build warnings are seen with -Wextra. w83791d.c: In function store_temp_target: w83791d.c:858:2: warning: comparison of unsigned expression < 0 is always false w83791d.c: In function store_temp_tolerance: w83791d.c:920:2: warning: comparison of unsigned expression < 0 is always false For store_temp_target, accept negative numbers and clamp to >= 0. For store_temp_tolerance, drop the unnecessary comparison. Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> --- v2: Accept negative values in store_temp_target and clamp to >= 0. drivers/hwmon/w83791d.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/drivers/hwmon/w83791d.c b/drivers/hwmon/w83791d.c index 9ade4d4..93ea81a 100644 --- a/drivers/hwmon/w83791d.c +++ b/drivers/hwmon/w83791d.c @@ -259,8 +259,7 @@ static u8 fan_to_reg(long rpm, int div) ((val) + 500) / 1000) /* for thermal cruise temp tolerance, 4-bits, LSB = 1 degree Celsius */ -#define TOL_TEMP_TO_REG(val) ((val) < 0 ? 0 : \ - (val) >= 15000 ? 15 : \ +#define TOL_TEMP_TO_REG(val) ((val) >= 15000 ? 15 : \ ((val) + 500) / 1000) #define BEEP_MASK_TO_REG(val) ((val) & 0xffffff) @@ -848,10 +847,10 @@ static ssize_t store_temp_target(struct device *dev, struct i2c_client *client = to_i2c_client(dev); struct w83791d_data *data = i2c_get_clientdata(client); int nr = sensor_attr->index; - unsigned long val; + long val; u8 target_mask; - if (kstrtoul(buf, 10, &val)) + if (kstrtol(buf, 10, &val)) return -EINVAL; mutex_lock(&data->update_lock); -- 1.7.9.7 _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
