On dio-1.1-b111-linux-armv6hf.jar executed with DIO VTS 1.1 test failed with:
com.sun.tck.cdc.lib.ExecCLDCTestOnCDCSameJVMCmd com.oracle.tests.jdk.dio.DeviceManager.register2.GPinTests -gpin {"shareable":"false","mode":["-1"],"pinNumber":"4","initTrigger":"3","trigger":["3"],"initValue":"1","intfClassName":"jdk.dio.gpio.GPIOPin","portNumber":"0","direction":"0"}
DeviceAlreadyExistsException was not thrown
Interface = interface jdk.dio.gpio.GPIOPin
register204: Failed. See log for details

The test is about registering existing GPIOPins by
DeviceManager.register(id, c, pc, null, (String)null);
and expects DeviceAlreadyExistsException.

But there was no exception, so test failed.