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hwmon: (acpi_power_meter) Cleanup and optimizations

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An unsigned value can not be smaller than 0. Remove the check for it.
Use DIV_ROUND_CLOSEST for divide operations converting milli-degrees C into
degrees C. Limit maximum accepted trip point temperature to INT_MAX.

This patch fixes Coverity #115214: Unsigned compared against 0

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-06-18 22:37:13 -07:00
parent 27f8b13555
commit 27c4db3996
1 changed files with 3 additions and 3 deletions
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6
drivers/hwmon/acpi_power_meter.c
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@ -237,7 +237,7 @@ static ssize_t set_cap(struct device *dev, struct device_attribute *devattr,
if (res)
return res;
temp /= 1000;
temp = DIV_ROUND_CLOSEST(temp, 1000);
if (temp > resource->caps.max_cap || temp < resource->caps.min_cap)
return -EINVAL;
arg0.integer.value = temp;
@ -307,8 +307,8 @@ static ssize_t set_trip(struct device *dev, struct device_attribute *devattr,
if (res)
return res;
temp /= 1000;
if (temp < 0)
temp = DIV_ROUND_CLOSEST(temp, 1000);
if (temp > INT_MAX)
return -EINVAL;
mutex_lock(&resource->lock);