linux-kernel - Question about tty layer

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Date:	Thu, 13 Jan 2011 06:16:40 +0000
From:	<deepak.kodihalli@...ia.com>
To:	<linux-kernel@...r.kernel.org>
Subject: Question about tty layer

Hi,

Does the tty layer buffer requests from the host if the tty has not been opened?

Supposing I'm working with an interface on /dev/ttyGS1. If the user space has not opened this yet, but USB is connected, would this allow the host to send data packets to this interface? If yes, and if user space opens ttyGS1 at a later stage and say adds a GIO watch on it for POLLIN, would user space receive that pollin?

Thanks,
Deepak
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