linux-kernel - Re: [PATCH] Add the ability to layer another driver over the serial driver

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Date:	Mon, 11 Dec 2006 11:22:06 -0600
From:	Corey Minyard <cminyard@...sta.com>
To:	Alan <alan@...rguk.ukuu.org.uk>
Cc:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Tilman Schmidt <tilman@...p.cc>, linux-serial@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Hansjoerg Lipp <hjlipp@....de>, Russell Doty <rdoty@...hat.com>
Subject: Re: [PATCH] Add the ability to layer another driver over the serial
 driver

Alan wrote:
>> This is going to require some more thought.  But I believe it can be
>> done with adding a poll routine to the tty_operations structure 
>>     
>
> What status do you need to poll ?
>   
I need to poll for receive and transmit characters so I can do I/O
during panics (interrupts disabled).

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