Fix abnormal wake up caused by WifiConnectivityManager

When wifi is toggled off when disconnected, the Watchdog Timer will
still work after at most 20mins, this will wake up the phone from
sleep.

Signed-off-by: zhujiatai <zhujiatai@xiaomi.com>
Change-Id: I73333041932d3240783cd3a2ceb2f6243ccde2d6

1 files changed, 11 insertions, 0 deletions

diff --git a/service/java/com/android/server/wifi/WifiConnectivityManager.java b/service/java/com/android/server/wifi/WifiConnectivityManager.java
index 77af65400..12c64b542 100644
--- a/service/java/com/android/server/wifi/WifiConnectivityManager.java
+++ b/service/java/com/android/server/wifi/WifiConnectivityManager.java
@@ -175,6 +175,7 @@ public class WifiConnectivityManager {
     private boolean mPnoScanStarted = false;
     private boolean mPeriodicScanTimerSet = false;
     private boolean mDelayedPartialScanTimerSet = false;
+    private boolean mWatchdogScanTimerSet = false;
 
     // Used for Initial Scan metrics
     private boolean mFailedInitialPartialScan = false;
@@ -1466,6 +1467,15 @@ public class WifiConnectivityManager {
                             mClock.getElapsedSinceBootMillis() + WATCHDOG_INTERVAL_MS,
                             WATCHDOG_TIMER_TAG,
                             mWatchdogListener, mEventHandler);
+        mWatchdogScanTimerSet = true;
+    }
+
+    // Cancel the watchdog scan timer.
+    private void cancelWatchdogScan() {
+        if (mWatchdogScanTimerSet) {
+            mAlarmManager.cancel(mWatchdogListener);
+            mWatchdogScanTimerSet = false;
+        }
     }
 
     // Schedules a delayed partial scan, which will scan the frequencies in mCachedWifiCandidates.
@@ -1893,6 +1903,7 @@ public class WifiConnectivityManager {
         if (!mRunning) return;
         mRunning = false;
         stopConnectivityScan();
+        cancelWatchdogScan();
         resetLastPeriodicSingleScanTimeStamp();
         mOpenNetworkNotifier.clearPendingNotification(true /* resetRepeatDelay */);
         mLastConnectionAttemptBssid = null;