ACPI / Thermal / video: fix max_level incorrect value

[deliverable/linux.git] / drivers / thermal / of-thermal.c

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 9043f8f918529bd600eda1bbffe3bdf91f036ef4..d8ec44b194d64a012c1dff1472c233f83f1119b0 100644 (file)
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -555,6 +555,87 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
 }
 EXPORT_SYMBOL_GPL(thermal_zone_of_sensor_unregister);
 
+static void devm_thermal_zone_of_sensor_release(struct device *dev, void *res)
+{
+       thermal_zone_of_sensor_unregister(dev,
+                                         *(struct thermal_zone_device **)res);
+}
+
+static int devm_thermal_zone_of_sensor_match(struct device *dev, void *res,
+                                            void *data)
+{
+       struct thermal_zone_device **r = res;
+
+       if (WARN_ON(!r || !*r))
+               return 0;
+
+       return *r == data;
+}
+
+/**
+ * devm_thermal_zone_of_sensor_register - Resource managed version of
+ *                             thermal_zone_of_sensor_register()
+ * @dev: a valid struct device pointer of a sensor device. Must contain
+ *       a valid .of_node, for the sensor node.
+ * @sensor_id: a sensor identifier, in case the sensor IP has more
+ *            than one sensors
+ * @data: a private pointer (owned by the caller) that will be passed
+ *       back, when a temperature reading is needed.
+ * @ops: struct thermal_zone_of_device_ops *. Must contain at least .get_temp.
+ *
+ * Refer thermal_zone_of_sensor_register() for more details.
+ *
+ * Return: On success returns a valid struct thermal_zone_device,
+ * otherwise, it returns a corresponding ERR_PTR(). Caller must
+ * check the return value with help of IS_ERR() helper.
+ * Registered hermal_zone_device device will automatically be
+ * released when device is unbounded.
+ */
+struct thermal_zone_device *devm_thermal_zone_of_sensor_register(
+       struct device *dev, int sensor_id,
+       void *data, const struct thermal_zone_of_device_ops *ops)
+{
+       struct thermal_zone_device **ptr, *tzd;
+
+       ptr = devres_alloc(devm_thermal_zone_of_sensor_release, sizeof(*ptr),
+                          GFP_KERNEL);
+       if (!ptr)
+               return ERR_PTR(-ENOMEM);
+
+       tzd = thermal_zone_of_sensor_register(dev, sensor_id, data, ops);
+       if (IS_ERR(tzd)) {
+               devres_free(ptr);
+               return tzd;
+       }
+
+       *ptr = tzd;
+       devres_add(dev, ptr);
+
+       return tzd;
+}
+EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_register);
+
+/**
+ * devm_thermal_zone_of_sensor_unregister - Resource managed version of
+ *                             thermal_zone_of_sensor_unregister().
+ * @dev: Device for which which resource was allocated.
+ * @tzd: a pointer to struct thermal_zone_device where the sensor is registered.
+ *
+ * This function removes the sensor callbacks and private data from the
+ * thermal zone device registered with devm_thermal_zone_of_sensor_register()
+ * API. It will also silent the zone by remove the .get_temp() and .get_trend()
+ * thermal zone device callbacks.
+ * Normally this function will not need to be called and the resource
+ * management code will ensure that the resource is freed.
+ */
+void devm_thermal_zone_of_sensor_unregister(struct device *dev,
+                                           struct thermal_zone_device *tzd)
+{
+       WARN_ON(devres_release(dev, devm_thermal_zone_of_sensor_release,
+                              devm_thermal_zone_of_sensor_match, tzd));
+}
+EXPORT_SYMBOL_GPL(devm_thermal_zone_of_sensor_unregister);
+
 /***   functions parsing device tree nodes   ***/
 
 /**
@@ -722,8 +803,8 @@ static int thermal_of_populate_trip(struct device_node *np,
  * otherwise, it returns a corresponding ERR_PTR(). Caller must
  * check the return value with help of IS_ERR() helper.
  */
-static struct __thermal_zone *
-thermal_of_build_thermal_zone(struct device_node *np)
+static struct __thermal_zone
+__init *thermal_of_build_thermal_zone(struct device_node *np)
 {
        struct device_node *child = NULL, *gchild;
        struct __thermal_zone *tz;