This is a note to let you know that I've just added the patch titled
hwmon: (smsc47m192) Fix temperature limit and vrm write operations
to the 3.15-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-smsc47m192-fix-temperature-limit-and-vrm-write-operations.patch
and it can be found in the queue-3.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 043572d5444116b9d9ad8ae763cf069e7accbc30 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@xxxxxxxxxxxx>
Date: Fri, 18 Jul 2014 07:31:18 -0700
Subject: hwmon: (smsc47m192) Fix temperature limit and vrm write operations
From: Guenter Roeck <linux@xxxxxxxxxxxx>
commit 043572d5444116b9d9ad8ae763cf069e7accbc30 upstream.
Temperature limit clamps are applied after converting the temperature
from milli-degrees C to degrees C, so either the clamp limit needs
to be specified in degrees C, not milli-degrees C, or clamping must
happen before converting to degrees C. Use the latter method to avoid
overflows.
vrm is an u8, so the written value needs to be limited to [0, 255].
Cc: Axel Lin <axel.lin@xxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Reviewed-by: Jean Delvare <jdelvare@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hwmon/smsc47m192.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/hwmon/smsc47m192.c
+++ b/drivers/hwmon/smsc47m192.c
@@ -86,7 +86,7 @@ static inline u8 IN_TO_REG(unsigned long
*/
static inline s8 TEMP_TO_REG(int val)
{
- return clamp_val(SCALE(val, 1, 1000), -128000, 127000);
+ return SCALE(clamp_val(val, -128000, 127000), 1, 1000);
}
static inline int TEMP_FROM_REG(s8 val)
@@ -384,6 +384,8 @@ static ssize_t set_vrm(struct device *de
err = kstrtoul(buf, 10, &val);
if (err)
return err;
+ if (val > 255)
+ return -EINVAL;
data->vrm = val;
return count;
Patches currently in stable-queue which might be from linux@xxxxxxxxxxxx are
queue-3.15/hwmon-smsc47m192-fix-temperature-limit-and-vrm-write-operations.patch
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