Use correct PowerManager call to wake up screen

The current implementation does not actually wakes up the screen.

Change-Id: Ief2dca013cfe40e03b64273fe7b09822e9ad42a7

Author: guang-google

cmds/svc/src/com/android/commands/svc/PowerCommand.java

@@ -16,14 +16,12 @@
 
 package com.android.commands.svc;
 
-import android.os.Binder;
-import android.os.IBinder;
+import android.content.Context;
+import android.os.BatteryManager;
 import android.os.IPowerManager;
-import android.os.PowerManager;
-import android.os.ServiceManager;
 import android.os.RemoteException;
-import android.os.BatteryManager;
-import android.content.Context;
+import android.os.ServiceManager;
+import android.os.SystemClock;
 
 public class PowerCommand extends Svc.Command {
     public PowerCommand() {
@@ -65,10 +63,12 @@ else if ("false".equals(args[2])) {
                     IPowerManager pm
                             = IPowerManager.Stub.asInterface(ServiceManager.getService(Context.POWER_SERVICE));
                     try {
-                        IBinder lock = new Binder();
-                        pm.acquireWakeLock(lock, PowerManager.FULL_WAKE_LOCK, "svc power", null);
+                        if (val != 0) {
+                            // if the request is not to set it to false, wake up the screen so that
+                            // it can stay on as requested
+                            pm.wakeUp(SystemClock.uptimeMillis());
+                        }
                         pm.setStayOnSetting(val);
-                        pm.releaseWakeLock(lock, 0);
                     }
                     catch (RemoteException e) {
                         System.err.println("Faild to set setting: " + e);