[PATCH 3.12 045/235] thermal: hwmon: Properly report critical temperature in sysfs

From: Jiri Slaby
Date: Fri Jan 27 2017 - 05:59:48 EST

From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.


commit f37fabb8643eaf8e3b613333a72f683770c85eca upstream.

In the critical sysfs entry the thermal hwmon was returning wrong
temperature to the user-space. It was reporting the temperature of the
first trip point instead of the temperature of critical trip point.

For example:

Since commit e68b16abd91d ("thermal: add hwmon sysfs I/F") the driver
have been registering a sysfs entry if get_crit_temp() callback was
provided. However when accessed, it was calling get_trip_temp() instead
of the get_crit_temp().

Fixes: e68b16abd91d ("thermal: add hwmon sysfs I/F")
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
drivers/thermal/thermal_hwmon.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/thermal_hwmon.c b/drivers/thermal/thermal_hwmon.c
index 1967bee4f076..9035fbc5e98d 100644
--- a/drivers/thermal/thermal_hwmon.c
+++ b/drivers/thermal/thermal_hwmon.c
@@ -98,7 +98,7 @@ temp_crit_show(struct device *dev, struct device_attribute *attr, char *buf)
long temperature;
int ret;

- ret = tz->ops->get_trip_temp(tz, 0, &temperature);
+ ret = tz->ops->get_crit_temp(tz, &temperature);
if (ret)
return ret;