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-rw-r--r--drivers/thermal/thermal_core.c19
-rw-r--r--include/linux/thermal.h4
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index b38abe8a080a..6b273e11ab2f 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -497,6 +497,25 @@ void thermal_zone_device_update(struct thermal_zone_device *tz,
}
EXPORT_SYMBOL_GPL(thermal_zone_device_update);
+/**
+ * thermal_zone_device_exec - Run a callback under the zone lock.
+ * @tz: Thermal zone.
+ * @cb: Callback to run.
+ * @data: Data to pass to the callback.
+ */
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+ void (*cb)(struct thermal_zone_device *,
+ unsigned long),
+ unsigned long data)
+{
+ mutex_lock(&tz->lock);
+
+ cb(tz, data);
+
+ mutex_unlock(&tz->lock);
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_exec);
+
static void thermal_zone_device_check(struct work_struct *work)
{
struct thermal_zone_device *tz = container_of(work, struct
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 87837094d549..4d40bfa14cdd 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -323,6 +323,10 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
struct thermal_cooling_device *);
void thermal_zone_device_update(struct thermal_zone_device *,
enum thermal_notify_event);
+void thermal_zone_device_exec(struct thermal_zone_device *tz,
+ void (*cb)(struct thermal_zone_device *,
+ unsigned long),
+ unsigned long data);
struct thermal_cooling_device *thermal_cooling_device_register(const char *,
void *, const struct thermal_cooling_device_ops *);