ACPI: CELSIUS_TO_KELVIN fixup

Fix an imprecision in CELSIUS_TO_KELVIN and move these
two macroes to a proper place.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Thomas Sujith <sujith.thomas@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index e4b76c7afb5..bba7712cadc 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -61,6 +61,10 @@ struct thermal_cooling_device {
 	struct list_head node;
 };
 
+#define KELVIN_TO_CELSIUS(t)	(long)(((long)t-2732 >= 0) ?	\
+				((long)t-2732+5)/10 : ((long)t-2732-5)/10)
+#define CELSIUS_TO_KELVIN(t)	((t)*10+2732)
+
 struct thermal_zone_device {
 	int id;
 	char type[THERMAL_NAME_LENGTH];