The SAR enable operation may be selecting an explicit SAR level by
itself, so make sure the protocol implementation reports back to the
interface the default level that was used while enabling SAR.
No level change is reported in the interface if the SAR is being
disabled.
This was already forbidden in the MBIM implementation, and we should
also have it in the QMI implementation, so just make it a generic
check in the interface.
We cannot just return without completing the GTask. If we see the
support check method failed, just keep on with the state machine so
that the GTask is completed in the FAIL_IF_UNSUPPORTED step.
Also, don't assume GError is set if FALSE is returned. This is the
only kind of async method where we allow this right now.
Aleksander Morgado
Aleksander Morgado
lvmaorui