diff options
| author | Guenter Roeck | 2024-07-06 23:51:34 -0700 |
|---|---|---|
| committer | Guenter Roeck | 2024-07-07 07:48:25 -0700 |
| commit | 5c1de37969b7bc0abcb20b86e91e70caebbd4f89 (patch) | |
| tree | 9e183305538d655acb96802ea014f6c0a7392e0e /drivers/hwmon | |
| parent | 0403e10bf0824bf0ec2bb135d4cf1c0cc3bf4bf0 (diff) | |
hwmon: (w83627ehf) Fix underflows seen when writing limit attributes
DIV_ROUND_CLOSEST() after kstrtol() results in an underflow if a large
negative number such as -9223372036854775808 is provided by the user.
Fix it by reordering clamp_val() and DIV_ROUND_CLOSEST() operations.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/w83627ehf.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/hwmon/w83627ehf.c b/drivers/hwmon/w83627ehf.c index fe960c0a624f..7d7d70afde65 100644 --- a/drivers/hwmon/w83627ehf.c +++ b/drivers/hwmon/w83627ehf.c @@ -895,7 +895,7 @@ store_target_temp(struct device *dev, struct device_attribute *attr, if (err < 0) return err; - val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 127); + val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000); mutex_lock(&data->update_lock); data->target_temp[nr] = val; @@ -920,7 +920,7 @@ store_tolerance(struct device *dev, struct device_attribute *attr, return err; /* Limit the temp to 0C - 15C */ - val = clamp_val(DIV_ROUND_CLOSEST(val, 1000), 0, 15); + val = DIV_ROUND_CLOSEST(clamp_val(val, 0, 15000), 1000); mutex_lock(&data->update_lock); reg = w83627ehf_read_value(data, W83627EHF_REG_TOLERANCE[nr]); |