linux-kernel - Re: [PATCH 2/3 v2] fb: udlfb: fix hang at disconnect

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Message-ID: <510FA409.2080201@ahsoftware.de>
Date:	Mon, 04 Feb 2013 13:05:29 +0100
From:	Alexander Holler <holler@...oftware.de>
To:	Greg KH <gregkh@...uxfoundation.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-fbdev@...r.kernel.org,
	Florian Tobias Schandinat <FlorianSchandinat@....de>,
	Bernie Thompson <bernie@...gable.com>,
	Steve Glendinning <steve.glendinning@...well.net>,
	stable@...r.kernel.org
Subject: Re: [PATCH 2/3 v2] fb: udlfb: fix hang at disconnect

Am 04.02.2013 02:14, schrieb Greg KH:

> So you are right in that your driver will wait for forever for a
> disconnect() to happen, as it will never be called.  I don't understand
> the problem that this is causing when it happens.  What's wrong with
> udlfb that having the cpu suddently reset as the powerdown happened
> without it knowing about it?

There is nothing wrong with that. I've just explained why a problem 
doesn't occur on shutdown but on disconnect (of the device).

Regards,

Alexander
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