Add two log functions, one that aborts on a received message. We know when we
expect to receive an error, so anytime this happens unexpectedly should
terminate the test.
And for those tests do issue a log message, let them ignore it and don't
print anything.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
The helper function uses abs.value for the axis code (to save a parameter).
Reset that to 0 before we write to the device
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
