1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 0815ac3ae3d6..504385b1f211 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -889,10 +889,15 @@ static void acpi_thermal_check(void *data)
 static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
 {
         struct acpi_thermal *tz = thermal->devdata;
+        int result;
 
         if (!tz)
                 return -EINVAL;
 
+        result = acpi_thermal_get_temperature(tz);
+        if (result)
+                return result;
+
         return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
 }
 
@@ -1017,6 +1022,18 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
         return -EINVAL;
 }
 
+static int thermal_get_crit_temp(struct thermal_zone_device *thermal,
+                                unsigned long *temperature) {
+        struct acpi_thermal *tz = thermal->devdata;
+
+        if (tz->trips.critical.flags.valid) {
+                *temperature = KELVIN_TO_MILLICELSIUS(
+                                tz->trips.critical.temperature);
+                return 0;
+        } else
+                return -EINVAL;
+}
+
 typedef int (*cb)(struct thermal_zone_device *, int,
                   struct thermal_cooling_device *);
 static int acpi_thermal_cooling_device_cb(struct thermal_zone_device *thermal,
@@ -1108,6 +1125,7 @@ static struct thermal_zone_device_ops acpi_thermal_zone_ops = {
         .set_mode = thermal_set_mode,
         .get_trip_type = thermal_get_trip_type,
         .get_trip_temp = thermal_get_trip_temp,
+        .get_crit_temp = thermal_get_crit_temp,
 };
 
 static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
@@ -1128,7 +1146,7 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 
         for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
                         tz->trips.active[i].flags.valid; i++, trips++);
-        tz->thermal_zone = thermal_zone_device_register("ACPI thermal zone",
+        tz->thermal_zone = thermal_zone_device_register("acpitz",
                                         trips, tz, &acpi_thermal_zone_ops);
         if (IS_ERR(tz->thermal_zone))
                 return -ENODEV;