From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexander Holler <holler@ahsoftware.de>
Date: Mon, 04 Feb 2013 12:05:29 +0000
Subject: Re: [PATCH 2/3 v2] fb: udlfb: fix hang at disconnect
Message-Id: <510FA409.2080201@ahsoftware.de>
List-Id: <linux-fbdev.vger.kernel.org>
References: <50F2A310.5010006@ahsoftware.de> <1359139768-32294-1-git-send-email-holler@ahsoftware.de> <1359139768-32294-2-git-send-email-holler@ahsoftware.de> <20130128162238.7fba92fe.akpm@linux-foundation.org> <51071E21.9030008@ahsoftware.de> <5107A5ED.7020009@ahsoftware.de> <5107AE4F.9000809@ahsoftware.de> <5107F014.4030704@ahsoftware.de> <5108329E.2050802@ahsoftware.de> <20130204011413.GA6413@kroah.com>
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To: Greg KH <gregkh@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, Florian Tobias Schandinat <FlorianSchandinat@gmx.de>, Bernie Thompson <bernie@plugable.com>, Steve Glendinning <steve.glendinning@shawell.net>, stable@vger.kernel.org

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