thermal: sysfs: Use the dev argument in instance-related show/store

Two sysfs show/store functions for attributes representing thermal
instances, trip_point_show() and weight_store(), retrieve the thermal
zone pointer from the instance object at hand, but they may also get
it from their dev argument, which is more consistent with what the
other thermal sysfs functions do, so make them do so.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://patch.msgid.link/1987669.PYKUYFuaPT@rjwysocki.net

1 files changed, 7 insertions, 8 deletions

diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c
index 270945548677..b740b60032ee 100644
--- a/drivers/thermal/thermal_sysfs.c
+++ b/drivers/thermal/thermal_sysfs.c
@@ -836,13 +836,12 @@ void thermal_cooling_device_stats_reinit(struct thermal_cooling_device *cdev)
 ssize_t
 trip_point_show(struct device *dev, struct device_attribute *attr, char *buf)
 {
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
 	struct thermal_instance *instance;
 
-	instance =
-	    container_of(attr, struct thermal_instance, attr);
+	instance = container_of(attr, struct thermal_instance, attr);
 
-	return sprintf(buf, "%d\n",
-		       thermal_zone_trip_id(instance->tz, instance->trip));
+	return sprintf(buf, "%d\n", thermal_zone_trip_id(tz, instance->trip));
 }
 
 ssize_t
@@ -858,6 +857,7 @@ weight_show(struct device *dev, struct device_attribute *attr, char *buf)
 ssize_t weight_store(struct device *dev, struct device_attribute *attr,
 		     const char *buf, size_t count)
 {
+	struct thermal_zone_device *tz = to_thermal_zone(dev);
 	struct thermal_instance *instance;
 	int ret, weight;
 
@@ -868,14 +868,13 @@ ssize_t weight_store(struct device *dev, struct device_attribute *attr,
 	instance = container_of(attr, struct thermal_instance, weight_attr);
 
 	/* Don't race with governors using the 'weight' value */
-	mutex_lock(&instance->tz->lock);
+	mutex_lock(&tz->lock);
 
 	instance->weight = weight;
 
-	thermal_governor_update_tz(instance->tz,
-				   THERMAL_INSTANCE_WEIGHT_CHANGED);
+	thermal_governor_update_tz(tz, THERMAL_INSTANCE_WEIGHT_CHANGED);
 
-	mutex_unlock(&instance->tz->lock);
+	mutex_unlock(&tz->lock);
 
 	return count;
 }