From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ognyan Kulev Subject: Re: [BUG] OPTi 621, chipset revision 18, hangs with enabled DMA Date: Sat, 31 Jul 2004 17:25:43 +0300 Sender: linux-ide-owner@vger.kernel.org Message-ID: <410BABE7.1040005@fmi.uni-sofia.bg> References: <410B8555.6090209@fmi.uni-sofia.bg> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from dig-image.evro.net ([80.72.64.50]:22276 "EHLO batman.fmi.uni-sofia.bg") by vger.kernel.org with ESMTP id S267704AbUGaOUP (ORCPT ); Sat, 31 Jul 2004 10:20:15 -0400 Received: from fmi.uni-sofia.bg (localhost [127.0.0.1]) by batman.fmi.uni-sofia.bg (Postfix) with ESMTP id 0533B1074 for ; Sat, 31 Jul 2004 17:25:43 +0300 (EEST) In-Reply-To: <410B8555.6090209@fmi.uni-sofia.bg> List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Ognyan Kulev wrote: > After adding "ide=nodma", everything works fine. Alexander Atanasov replied to me privately and said it seems that OPTi621 doesn't support DMA. But after searching in Google, it looks that there is some OPTi621 that supports DMA, although not 100% confirmed: http://seclists.org/lists/linux-kernel/2002/Sep/2187.html http://seclists.org/lists/linux-kernel/2002/Sep/2428.html Is there reliable way to test if IDE controller suports DMA? I can test patches, but after some weeks, because I don't have the laptop right now. BTW My problem is that same as described in http://www.mail-archive.com/redhat-list@redhat.com/msg82172.html (revision 18 too!) Regards, ogi