From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from 9.mo1.mail-out.ovh.net ([178.32.108.172]:48320 "EHLO mo1.mail-out.ovh.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752130AbaIYRNx (ORCPT ); Thu, 25 Sep 2014 13:13:53 -0400 Received: from mail604.ha.ovh.net (b9.ovh.net [213.186.33.59]) by mo1.mail-out.ovh.net (Postfix) with SMTP id CD832FFAF72 for ; Thu, 25 Sep 2014 17:57:45 +0200 (CEST) Message-ID: <54243B6B.9000102@ventoso.org> Date: Thu, 25 Sep 2014 17:57:31 +0200 From: Luca Olivetti MIME-Version: 1.0 To: =?windows-1252?Q?Frank_Sch=E4fer?= , Fengguang Wu CC: Mauro Carvalho Chehab , linux-media@vger.kernel.org, Jet Chen , Su Tao , Yuanhan Liu , LKP , linux-kernel@vger.kernel.org, crope@iki.fi Subject: Re: [media/dvb_usb_af9005] BUG: unable to handle kernel paging request (WAS: [media/em28xx] BUG: unable to handle kernel) References: <20140919014124.GA8326@localhost> <541C7D9D.30908@googlemail.com> <541C826D.7060702@googlemail.com> <541C8A26.6050207@ventoso.org> <5421C187.2070407@googlemail.com> <5421E00B.2050404@ventoso.org> <54241E7D.3050201@googlemail.com> In-Reply-To: <54241E7D.3050201@googlemail.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: El 25/09/14 15:54, Frank Schäfer ha escrit: > > Am 23.09.2014 um 23:03 schrieb Luca Olivetti: >> El 23/09/14 20:52, Frank Schäfer ha escrit: >> >>>>> This seems to be an ancient bug, which is known at least since 5 1/2 years: >>>>> https://lkml.org/lkml/2009/2/4/350 >> [...] >>>> #if defined(CONFIG_MODULE) || defined(CONFIG_DVB_USB_AF9005_REMOTE) >>> What happens, if CONFIG_MODULES is enabled, but neither module >>> af9005-remote nor any other IR module is available ? >>> Has this ever been tested ? >> I think I tested at the time and symbol_request returned NULL in that >> case, however I'm not sure and I cannot find any documentation on how >> symbol_request is supposed to work in that case. > > Ok, thanks. > I assume noone wants to invest some time into this old driver and covert > it to todays kernel IR infrastructure as suggested by Antti ? :-) Not me ;-) > Then I'm going to send a patch with the > > #if defined(CONFIG_MODULE) || defined(CONFIG_DVB_USB_AF9005_REMOTE) > > approach. > That's at least better than leaving the bug unfixed. Yes, it's an acceptable workaround until the bug in symbol_request is fixed (because the bug actually is in symbol_request, isn't it?) Bye -- Luca