android5.1 按下power键 系统不休眠

frameworks/base/services/core/java/com/android/server/power/PowerManagerService.java

         @Override // Binder call
         public void goToSleep(long eventTime, int reason, int flags) {
+            if(true){
+                return;
+            }
             if (eventTime > SystemClock.uptimeMillis()) {
                 throw new IllegalArgumentException("event time must not be in the future");
             }