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hwmon: (lm90) Add range check to set_update_interval

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When writing the update_interval attribute, the parameter value was
not range checked, which could cause an integer overflow and result
in an arbitrary update interval. Fix by limiting the value range to
<0, 100000>.

Reported-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-01-16 22:51:47 +01:00 committed by Jean Delvare
parent 2fe28ab51d
commit 6b101116ae
1 changed files with 1 additions and 1 deletions
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2
drivers/hwmon/lm90.c
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@ -917,7 +917,7 @@ static ssize_t set_update_interval(struct device *dev,
return err;
mutex_lock(&data->update_lock);
lm90_set_convrate(client, data, val);
lm90_set_convrate(client, data, SENSORS_LIMIT(val, 0, 100000));
mutex_unlock(&data->update_lock);
return count;