linux-kernel - Re: serial and tty driver

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Date:	Sat, 17 Feb 2007 12:24:22 -0600
From:	Paul Fulghum <paulkf@...rogate.com>
To:	Mockern@...dex.ru
CC:	linux-kernel@...r.kernel.org
Subject: Re: serial and tty driver

Mockern wrote:
> I have a question, what is really difference between serial and tty
> drivers?
> 
> As I understand tty is high level and communicates with user space. 

The serial core implements many of the details of a tty
driver in a common place so that individual hardware drivers
(serial drivers) only need implement the hardware specific code.

This prevents duplicating tty logic in many drivers,
with the possibility of mistakes/inconsistency in the
different tty drivers.

The stand alone tty drivers are mostly legacy code from
the time before serial core that have not been ported
to be a serial drivers.

--
Paul
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