From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755305Ab3BDMFq (ORCPT ); Mon, 4 Feb 2013 07:05:46 -0500 Received: from h1446028.stratoserver.net ([85.214.92.142]:60986 "EHLO mail.ahsoftware.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755222Ab3BDMFo (ORCPT ); Mon, 4 Feb 2013 07:05:44 -0500 Message-ID: <510FA409.2080201@ahsoftware.de> Date: Mon, 04 Feb 2013 13:05:29 +0100 From: Alexander Holler User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Greg KH CC: Andrew Morton , linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, Florian Tobias Schandinat , Bernie Thompson , Steve Glendinning , stable@vger.kernel.org Subject: Re: [PATCH 2/3 v2] fb: udlfb: fix hang at disconnect 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> In-Reply-To: <20130204011413.GA6413@kroah.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@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