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Commit c584d77b authored by Badhri Jagan Sridharan's avatar Badhri Jagan Sridharan
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Introduce debounce to filter rapidly toggling type-c ports 

Type-c ports can quickly toggle between connected/disconnected
states. Introduce debounce to prevent sending spurious notifications.

Bug: 34972898
Test: notification should not be queued for a pixel-c charger not connected
to the power outlet.
Change-Id: I4aa19f9f864fe5b77e65f6a07a3184d8aba1f5fc
parent 1b8e847a

services/usb/java/com/android/server/usb/UsbDeviceManager.java

+4 −1
Original line number Diff line number Diff line
@@ -442,7 +442,10 @@ public class UsbDeviceManager { 
            args.argi2 = sourcePower ? 1 :0;

            args.argi3 = sinkPower ? 1 :0;



            obtainMessage(MSG_UPDATE_HOST_STATE, args).sendToTarget();

            removeMessages(MSG_UPDATE_HOST_STATE);

            Message msg = obtainMessage(MSG_UPDATE_HOST_STATE, args);

            // debounce rapid transitions of connect/disconnect on type-c ports

            sendMessageDelayed(msg, UPDATE_DELAY);

        }



        private boolean waitForState(String state) {