[PATCH 0/4] MR9071: server: Introduce an internal queue bits field.

[Rémi Bernon (＠rbernon)]

And set a QS_DRIVER bit when the queue fd is ready for reading, or clear
it if it isn't, before waiting on it.

Clear the bit after waiting as we expect the client to process events
before calling the server again and before we can poll it again.