Input: Use accessor for MT values

The current MT accessor function does not distinguish between the MT
values and the slot specification event. Add an accessor function for
the values only, and use it where appropriate.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>

drivers/input/input.c

@@ -180,7 +180,7 @@ static int input_handle_abs_event(struct input_dev *dev,
 		return INPUT_IGNORE_EVENT;
 	}
 
-	is_mt_event = code >= ABS_MT_FIRST && code <= ABS_MT_LAST;
+	is_mt_event = input_is_mt_value(code);
 
 	if (!is_mt_event) {
 		pold = &dev->absinfo[code].value;

include/linux/input/mt.h

@@ -48,10 +48,14 @@ static inline void input_mt_slot(struct input_dev *dev, int slot)
 	input_event(dev, EV_ABS, ABS_MT_SLOT, slot);
 }
 
+static inline bool input_is_mt_value(int axis)
+{
+	return axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST;
+}
+
 static inline bool input_is_mt_axis(int axis)
 {
-	return axis == ABS_MT_SLOT ||
-		(axis >= ABS_MT_FIRST && axis <= ABS_MT_LAST);
+	return axis == ABS_MT_SLOT || input_is_mt_value(axis);
 }
 
 void input_mt_report_slot_state(struct input_dev *dev,