From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Palmer Subject: Re: PATA_ARTOP reads byte from PCI IO port without mapping it to the right address. Date: Wed, 30 Mar 2011 20:48:26 +0100 Message-ID: <4D93890A.60307@danielpalmer.co.uk> References: <4D937FDC.4090607@danielpalmer.co.uk> <20110330202628.5dc8db5f@lxorguk.ukuu.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from tomato.cardboardbox.org.uk ([174.143.157.65]:34554 "EHLO tomato.cardboardbox.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754838Ab1C3Tsf (ORCPT ); Wed, 30 Mar 2011 15:48:35 -0400 In-Reply-To: <20110330202628.5dc8db5f@lxorguk.ukuu.org.uk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cox Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org > That is the PCI port address. I don't pretend to understand most of this fully. On the board the PCI address space/PCI controller is apparently at 0xfe240000 So I guess that when that byte is read it should read from 0xfe240000 + 0x1400? That doesn't happen and a read happens at 0x1400 and an oops results. I don't know enough to point the finger really. There are probably only 2 people using this board still too. So I doubt it really matters. :) Cheers, Daniel