staging: speakup: flush tty buffers

[Okash Khawaja]

Hi,

On Tue, May 02, 2017 at 07:05:15PM -0400, John Covici wrote:
> Make sure that the modem lines rts-cts are also properly switched.
Do you mean driver might not be heeding these flow control primitives from
speak out? Can you suggest how to ensure rts/cts are properly
switched? They are handled by TTY layer.

Thanks,
Okash