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From: Okash Khawaja <okash.khawaja@gmail.com>
Date: Fri, 18 Nov 2016 07:07:33 +0000
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Subject: Serial: Initial refactor
To: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: John Covici <covici@ccs.covici.com>,
 David Borowski <david.a.borowski@gmail.com>,
 "Speakup is a screen review system for Linux." <speakup@linux-speakup.org>
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Hi Samuel,

>>From previous email:

"You will notice calls to spk_serial_out() in spk_do_catch_up() and
spk_synth_flush(). Actually the very first step of your work could be
to add a serial_out() method to drivers, which for now would be set
to spk_serial_out() in all drivers, and make spk_do_catch_up() and
spk_synth_flush() call the method instead of spk_serial_out(). Direct
calls to spk_serial_out() within drivers could be converted into calling
the method too, so that switching methods will be trivial."

So I am wondering if it will be possible to restrict the changes to
speakup_dummy while we test the new implementation using tty->ops->write?
That means a transitional phase where we have both, the existing serial io
for other drivers and new implementation for dummy driver. Or is that what
you meant?

Thanks,
Okash