| From | Ben Hutchings <> | Date | Fri, 10 Mar 2017 11:46:10 +0000 | Subject | [PATCH 3.2 038/199] hwmon: (ds620) Fix overflows seen when writing temperature limits |
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3.2.87-rc1 review patch. If anyone has any objections, please let me know.
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From: Guenter Roeck <linux@roeck-us.net>
commit e36ce99ee0815d7919a7b589bfb66f3de50b6bc7 upstream.
Module test reports:
temp1_max: Suspected overflow: [160000 vs. 0] temp1_min: Suspected overflow: [160000 vs. 0]
This is seen because the values passed when writing temperature limits are unbound.
Reviewed-by: Jean Delvare <jdelvare@suse.de> Fixes: 6099469805c2 ("hwmon: Support for Dallas Semiconductor DS620") Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/hwmon/ds620.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/hwmon/ds620.c +++ b/drivers/hwmon/ds620.c @@ -166,7 +166,7 @@ static ssize_t set_temp(struct device *d if (res) return res; - val = (val * 10 / 625) * 8; + val = (clamp_val(val, -128000, 128000) * 10 / 625) * 8; mutex_lock(&data->update_lock); data->temp[attr->index] = val;
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