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hwmon: (w83791d) Drop unnecessary compare statements

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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@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-09-19 11:27:03 -07:00
parent 3be8102fe3
commit a91698135b
1 changed files with 3 additions and 4 deletions
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7
drivers/hwmon/w83791d.c
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@ -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);