VibratorService: Fix to ensure actual delay in a vibrate pattern

delay might timeout early as value of duration isn't updated
correctly in the loop, should the wait be interrupted, to reflect
the elapsed time. Fix is to update duration in the loop.

Change-Id: I525b0e97799b288f46ae3a056cff7dcc69701bb0

1 files changed, 2 insertions, 3 deletions

diff --git a/services/java/com/android/server/VibratorService.java b/services/java/com/android/server/VibratorService.java
index b6098675b5dc..72fde1123809 100755
--- a/services/java/com/android/server/VibratorService.java
+++ b/services/java/com/android/server/VibratorService.java
@@ -441,7 +441,7 @@ public class VibratorService extends IVibratorService.Stub
 
         private void delay(long duration) {
             if (duration > 0) {
-                long bedtime = SystemClock.uptimeMillis();
+                long bedtime = duration + SystemClock.uptimeMillis();
                 do {
                     try {
                         this.wait(duration);
@@ -451,8 +451,7 @@ public class VibratorService extends IVibratorService.Stub
                     if (mDone) {
                         break;
                     }
-                    duration = duration
-                            - SystemClock.uptimeMillis() - bedtime;
+                    duration = bedtime - SystemClock.uptimeMillis();
                 } while (duration > 0);
             }
         }