linux-kernel - Re: [PATCH] AT91 Serial: update the powersave handler to match serial core

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Date:	Fri, 19 Sep 2008 15:51:09 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Cc:	Anti Sullin <anti.sullin@...ecdesign.ee>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] AT91 Serial: update the powersave handler to match
 serial core

> Maybe the tty layer ensures that the buffer is empty before
> suspending...would be interesting to know. In any case, any such bug

It doesn't - but calling tty_wait_until_sent(tty, some_timeout) will do
that for you providing you call it in a sleep capable context.

Alan
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