From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266539AbUHIMc4 (ORCPT ); Mon, 9 Aug 2004 08:32:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266543AbUHIMc4 (ORCPT ); Mon, 9 Aug 2004 08:32:56 -0400 Received: from gate.corvil.net ([213.94.219.177]:269 "EHLO corvil.com") by vger.kernel.org with ESMTP id S266538AbUHIMct (ORCPT ); Mon, 9 Aug 2004 08:32:49 -0400 Message-ID: <41176EC3.70202@draigBrady.com> Date: Mon, 09 Aug 2004 13:32:03 +0100 From: P@draigBrady.com User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040124 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Paulo Marques CC: Hamie , Alan Cox , Russell King , Linux Kernel Mailing List Subject: Re: ide-cs using 100% CPU References: <40FA4328.4060304@travellingkiwi.com> <20040806202747.H13948@flint.arm.linux.org.uk> <4113DD20.1010808@travellingkiwi.com> <1091917597.19077.38.camel@localhost.localdomain> <4115EC6C.5040608@travellingkiwi.com> <41174A95.3050705@grupopie.com> In-Reply-To: <41174A95.3050705@grupopie.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Paulo Marques wrote: > I've never seen a CF card that supported DMA (and I've worked with > several brands). Compact Flash cards have several modes of operation and > only one of this modes is "IDE-compatible". The newer ones do. I've a SanDisk SDCFB-64-201-80 that hangs on boot because it reports that it supports DMA but the ide adapter I use does not connect the DMA request and grant signals. A work around is to boot with ide=nodma however this is system wide. Pádraig.