ACPI: thermal: show temperature in millidegree Celsius

as now required by the generic thermal I/F

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 8d4b79b4f933..c4e00ac8ea85 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -879,6 +879,8 @@ static void acpi_thermal_check(void *data)
 }
 
 /* sys I/F for generic thermal sysfs support */
+#define KELVIN_TO_MILLICELSIUS(t) (t * 100 - 273200)
+
 static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
 {
         struct acpi_thermal *tz = thermal->devdata;
@@ -886,7 +888,7 @@ static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
         if (!tz)
                 return -EINVAL;
 
-        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(tz->temperature));
+        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
 }
 
 static const char enabled[] = "kernel";
@@ -980,21 +982,21 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
 
         if (tz->trips.critical.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                 tz->trips.critical.temperature));
                 trip--;
         }
 
         if (tz->trips.hot.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.hot.temperature));
                 trip--;
         }
 
         if (tz->trips.passive.flags.valid) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.passive.temperature));
                 trip--;
         }
@@ -1002,7 +1004,7 @@ static int thermal_get_trip_temp(struct thermal_zone_device *thermal,
         for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE &&
                 tz->trips.active[i].flags.valid; i++) {
                 if (!trip)
-                        return sprintf(buf, "%ld\n", KELVIN_TO_CELSIUS(
+                        return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(
                                         tz->trips.active[i].temperature));
                 trip--;
         }