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Commit 49db8535 authored by David 'Digit' Turner's avatar David 'Digit' Turner
Browse files

UsbService: Remove stack-trace message during boot. 

This removes a stack trace message during the boot under emulation.

The observers tried to access a null reference when no USB configuration
is supported by the emulated device. So do not start them in this case.

+ Change a Slog.w into a Slog.i since this is an acceptable condition.

Change-Id: I126b7f05c9648e39a060eb0974cc6f4ac7533791
parent 73fddbae

services/java/com/android/server/UsbService.java

+9 −4
Original line number Diff line number Diff line
@@ -134,14 +134,17 @@ class UsbService { 
        mContext = context;

        init();  // set initial status



        if (mConfiguration >= 0) {

            mUEventObserver.startObserving(USB_CONNECTED_MATCH);

            mUEventObserver.startObserving(USB_CONFIGURATION_MATCH);

            mUEventObserver.startObserving(USB_FUNCTIONS_MATCH);

        }

    }



    private final void init() {

        char[] buffer = new char[1024];



        mConfiguration = -1;

        try {

            FileReader file = new FileReader(USB_CONNECTED_PATH);

            int len = file.read(buffer, 0, 1024);
@@ -154,10 +157,12 @@ class UsbService { 
            mConfiguration = Integer.valueOf((new String(buffer, 0, len)).trim());



        } catch (FileNotFoundException e) {

            Slog.w(TAG, "This kernel does not have USB configuration switch support");

            Slog.i(TAG, "This kernel does not have USB configuration switch support");

        } catch (Exception e) {

            Slog.e(TAG, "" , e);

        }

        if (mConfiguration < 0)

            return;



        try {

            File[] files = new File(USB_COMPOSITE_CLASS_PATH).listFiles();