This is a note to let you know that I've just added the patch titled
hwmon: (lm85) Fix various errors on attribute writes
to the 3.10-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-lm85-fix-various-errors-on-attribute-writes.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3248c3b771ddd9d31695da17ba350eb6e1b80a53 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@xxxxxxxxxxxx>
Date: Tue, 29 Jul 2014 22:23:12 -0700
Subject: hwmon: (lm85) Fix various errors on attribute writes
From: Guenter Roeck <linux@xxxxxxxxxxxx>
commit 3248c3b771ddd9d31695da17ba350eb6e1b80a53 upstream.
Temperature limit register writes did not account for negative numbers.
As a result, writing -127000 resulted in -126000 written into the
temperature limit register. This problem affected temp[1-3]_min,
temp[1-3]_max, temp[1-3]_auto_temp_crit, and temp[1-3]_auto_temp_min.
When writing pwm[1-3]_freq, a long variable was auto-converted into an int
without range check. Wiring values larger than MAXINT resulted in unexpected
register values.
When writing temp[1-3]_auto_temp_max, an unsigned long variable was
auto-converted into an int without range check. Writing values larger than
MAXINT resulted in unexpected register values.
vrm is an u8, so the written value needs to be limited to [0, 255].
Cc: Axel Lin <axel.lin@xxxxxxxxxx>
Reviewed-by: Axel Lin <axel.lin@xxxxxxxxxx>
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/hwmon/lm85.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/hwmon/lm85.c
+++ b/drivers/hwmon/lm85.c
@@ -158,7 +158,7 @@ static inline u16 FAN_TO_REG(unsigned lo
/* Temperature is reported in .001 degC increments */
#define TEMP_TO_REG(val) \
- clamp_val(SCALE(val, 1000, 1), -127, 127)
+ DIV_ROUND_CLOSEST(clamp_val((val), -127000, 127000), 1000)
#define TEMPEXT_FROM_REG(val, ext) \
SCALE(((val) << 4) + (ext), 16, 1000)
#define TEMP_FROM_REG(val) ((val) * 1000)
@@ -192,7 +192,7 @@ static const int lm85_range_map[] = {
13300, 16000, 20000, 26600, 32000, 40000, 53300, 80000
};
-static int RANGE_TO_REG(int range)
+static int RANGE_TO_REG(long range)
{
int i;
@@ -214,7 +214,7 @@ static const int adm1027_freq_map[8] = {
11, 15, 22, 29, 35, 44, 59, 88
};
-static int FREQ_TO_REG(const int *map, int freq)
+static int FREQ_TO_REG(const int *map, unsigned long freq)
{
int i;
@@ -463,6 +463,9 @@ static ssize_t store_vrm_reg(struct devi
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-3.10/hwmon-sis5595-prevent-overflow-problem-when-writing-large-limits.patch
queue-3.10/hwmon-ads1015-fix-off-by-one-for-valid-channel-index-checking.patch
queue-3.10/hwmon-lm78-fix-overflow-problems-seen-when-writing-large-temperature-limits.patch
queue-3.10/hwmon-gpio-fan-prevent-overflow-problem-when-writing-large-limits.patch
queue-3.10/hwmon-ads1015-fix-out-of-bounds-array-access.patch
queue-3.10/hwmon-dme1737-prevent-overflow-problem-when-writing-large-limits.patch
queue-3.10/hwmon-lm85-fix-various-errors-on-attribute-writes.patch
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