From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757967AbYDUUeW (ORCPT ); Mon, 21 Apr 2008 16:34:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751888AbYDUUeN (ORCPT ); Mon, 21 Apr 2008 16:34:13 -0400 Received: from smtpq1.groni1.gr.home.nl ([213.51.130.200]:55904 "EHLO smtpq1.groni1.gr.home.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751370AbYDUUeM (ORCPT ); Mon, 21 Apr 2008 16:34:12 -0400 Message-ID: <480CFA42.20408@keyaccess.nl> Date: Mon, 21 Apr 2008 22:34:10 +0200 From: Rene Herman User-Agent: Thunderbird 2.0.0.12 (X11/20080213) MIME-Version: 1.0 To: Frantisek Rysanek CC: linux-kernel@vger.kernel.org Subject: Re: What pokes the ISA IO port of 0x211 ? References: <480C92C9.18283.A24BB91B@localhost> <480CF3A5.8080104@keyaccess.nl> In-Reply-To: <480CF3A5.8080104@keyaccess.nl> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -1.0 (-) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 21-04-08 22:05, Rene Herman wrote: > On 21-04-08 13:12, Frantisek Rysanek wrote: >> Dear Everyone, >> >> I'm dealing with an embedded PC motherboard that contains some custom >> circuitry (GPIO), accessible via an ISA IO range between 0x200 and >> 0x218. >> There's an interesting issue with this in recent Linux (tried 2.6.22.6 >> and 2.6.24.2): something probes IO port 0x211 on boot, which happens >> to be an add-on buzzer control port - effectively the kernel boot >> launches an accoustic alarm :-) >> Any ideas what this could be? > > ISAPnP default read data port is close at 0x213... > > I haven't checked but this also reminds me of sensor chips. Do you have > sensor drivers builtin? Ah, it's the old analog gameport: ns558_init. Rene.