linux-kernel - Question about pm and tty

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Message-ID: <38b2ab8a0707060105o722c1460lcb422d7899ace53a@mail.gmail.com>
Date:	Fri, 6 Jul 2007 10:05:38 +0200
From:	"Francis Moreau" <francis.moro@...il.com>
To:	linux-kernel@...r.kernel.org, linux-pm@...ts.osdl.org
Subject: Question about pm and tty

Hi,

I've just finished to implement an input driver for a simple custom
keyboard (only 16 keys).

I wanted to give it a test through a virtual terminal (CONFIG_VT).
Note that I'm not familiar with this at all so pardon me if I'm saying
something silly.

I noticed that as soon as the terminal is initialized, tty_init() is
called, the input device is open and thus its clock is started. It
sounds strange to me, I would have thought that the input device is
open only when /dev/tty is open. Thus the keyboard clock is started
when the keyboard is really used.

Am I missing something ?

Thanks
-- 
Francis
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