Protect the invocation of the _scan_done() callback function with the
global lock to avoid that it is called while the module is being unloaded
and the data structures have been freed.
Additionally, the commit also adds a patch to reduce the log level of the
driver that is logging some annoying messages.
https://jira.digi.com/browse/DEL-3607https://jira.digi.com/browse/DEL-3393
Signed-off-by: Pedro Perez de Heredia <pedro.perez@digi.com>
Pedro Perez de Heredia