Patch "hwmon: (ds620) Fix overflows seen when writing temperature limits" has been added to the 4.4-stable tree

Patch "hwmon: (ds620) Fix overflows seen when writing temperature limits" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    hwmon: (ds620) Fix overflows seen when writing temperature limits

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     hwmon-ds620-fix-overflows-seen-when-writing-temperature-limits.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From e36ce99ee0815d7919a7b589bfb66f3de50b6bc7 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@roeck-us.net>
Date: Sun, 20 Nov 2016 10:37:39 -0800
Subject: hwmon: (ds620) Fix overflows seen when writing temperature limits

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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;


Patches currently in stable-queue which might be from linux@roeck-us.net are

queue-4.4/hwmon-ds620-fix-overflows-seen-when-writing-temperature-limits.patch
queue-4.4/hwmon-amc6821-sign-extension-temperature.patch
queue-4.4/hwmon-scpi-fix-module-autoload.patch
queue-4.4/hwmon-nct7802-fix-overflows-seen-when-writing-into-limit-attributes.patch
queue-4.4/cris-only-build-flash-rescue-image-if-config_etrax_axisflashmap-is-selected.patch
queue-4.4/hwmon-g762-fix-overflows-and-crash-seen-when-writing-limit-attributes.patch