The thermal zone device structure is exposed via the exported
thermal.h header. This structure should stay private the thermal core
code. In order to encapsulate the structure, let's add an accessor to
get the 'type' of the thermal zone.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/thermal/thermal_core.c | 6 ++++++
 include/linux/thermal.h        | 6 ++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
index 9fa12147fead..913ba9ca9792 100644
--- a/drivers/thermal/thermal_core.c
+++ b/drivers/thermal/thermal_core.c
@@ -1384,6 +1384,12 @@ void *thermal_zone_device_priv(struct thermal_zone_device *tzd)
 }
 EXPORT_SYMBOL_GPL(thermal_zone_device_priv);
 
+const char *thermal_zone_device_type(struct thermal_zone_device *tzd)
+{
+	return tzd->type;
+}
+EXPORT_SYMBOL_GPL(thermal_zone_device_type);
+
 /**
  * thermal_zone_device_unregister - removes the registered thermal zone device
  * @tz: the thermal zone device to remove
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 7dbb5712434c..21686e676b3d 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -366,6 +366,7 @@ thermal_zone_device_register_with_trips(const char *, struct thermal_trip *, int
 					struct thermal_zone_params *, int, int);
 
 void *thermal_zone_device_priv(struct thermal_zone_device *tzd);
+const char *thermal_zone_device_type(struct thermal_zone_device *tzd);
 
 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
 				     struct thermal_cooling_device *,
@@ -443,6 +444,11 @@ static inline void *thermal_zone_device_priv(struct thermal_zone_device *tz)
 	return NULL;
 }
 
+static inline const char *thermal_zone_device_type(struct thermal_zone_device *tzd)
+{
+	return NULL;
+}
+
 static inline int thermal_zone_device_enable(struct thermal_zone_device *tz)
 { return -ENODEV; }
 
-- 
2.34.1