From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartlomiej Zolnierkiewicz Subject: Re: [Bug 13286] dma_timer_expiry: DMA status (0x21) Date: Wed, 13 May 2009 15:32:35 +0200 Message-ID: <200905131532.35154.bzolnier@gmail.com> References: <200905130758.n4D7wnL4014055@demeter.kernel.org> Mime-Version: 1.0 Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-fx0-f158.google.com ([209.85.220.158]:61153 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787AbZEMN2x (ORCPT ); Wed, 13 May 2009 09:28:53 -0400 Received: by fxm2 with SMTP id 2so648457fxm.37 for ; Wed, 13 May 2009 06:28:53 -0700 (PDT) In-Reply-To: <200905130758.n4D7wnL4014055@demeter.kernel.org> Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: bugzilla-daemon@bugzilla.kernel.org Cc: linux-ide@vger.kernel.org On Wednesday 13 May 2009 09:58:49 bugzilla-daemon@bugzilla.kernel.org wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13286 > > > > > > --- Comment #2 from fibre_optic@go2.pl 2009-05-13 07:58:48 --- > "Does 2.6.27.21 use DMA?" > > I will check it today evening. > > "Is this system equipped with on-board IDE->CF adapter, > or is it an add-on one?" > > It is an additional hardware. The hardwer is connected to mother board (IDE > ifc) and CF-CARD is inserted in a slot on the hardware. Ok. > "Does this adapter support DMA at the hardware level > (some adapters don't have DMA lines)?" > > Take a look belllow, is it what you need? > > # hdparm -i /dev/hda We know that the device supports DMA but we don't know about the adapter. Unfortunately there is no software method to check it so you need to look at PCB and verify if there are any routes connected to pins 21 and 29 (DMARQ and -DMACK lines).