WindowManagerService: Hack to keep the system from suspendinglinaro_android_4.2.1_stayawake

This seem to be a good, reproducible and lightweight method to
predictably disable suspend from happening very, very early in boot.

Change-Id: I88c55ddc2a425fa5793fd82ce78cf6440b94ad43
Signed-off-by: Zach Pfeffer <zach.pfeffer@linaro.org>

1 files changed, 10 insertions, 0 deletions

diff --git a/services/java/com/android/server/wm/WindowManagerService.java b/services/java/com/android/server/wm/WindowManagerService.java
index 51edb44f2db1..2547a0c158a9 100755
--- a/services/java/com/android/server/wm/WindowManagerService.java
+++ b/services/java/com/android/server/wm/WindowManagerService.java
@@ -812,6 +812,16 @@ public class WindowManagerService extends IWindowManager.Stub
                 "SCREEN_FROZEN");
         mScreenFrozenLock.setReferenceCounted(false);
 
+        Slog.i(TAG, "HACK - Take a lock to keep the system awake.");
+        PowerManager.WakeLock wl = pmc.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK |
+                                                   PowerManager.ACQUIRE_CAUSES_WAKEUP,
+                                                   "KEEP_SYSTEM_ON");
+        if (wl != null) {
+            wl.acquire();
+        } else {
+            Slog.e(TAG, "KEEP_SYSTEM_ON wakelock is null, can't keep the system on!");
+        }
+
         mActivityManager = ActivityManagerNative.getDefault();
         mBatteryStats = BatteryStatsService.getService();