Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269259AbUJFOpJ (ORCPT ); Wed, 6 Oct 2004 10:45:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269272AbUJFOpJ (ORCPT ); Wed, 6 Oct 2004 10:45:09 -0400 Received: from ns.virtualhost.dk ([195.184.98.160]:37318 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S269259AbUJFOpF (ORCPT ); Wed, 6 Oct 2004 10:45:05 -0400 Date: Wed, 6 Oct 2004 16:41:52 +0200 From: Jens Axboe To: Alan Cox Cc: Christoph Hellwig , Linux Kernel Mailing List , Bartlomiej Zolnierkiewicz Subject: Re: [PATCH] ide-dma blacklist behaviour broken Message-ID: <20041006144152.GK3638@suse.de> References: <20041005142001.GR2433@suse.de> <20041005163730.A19554@infradead.org> <20041005154628.GG19971@suse.de> <1097016410.23923.8.camel@localhost.localdomain> <20041006054532.GA13631@suse.de> <1097069227.29255.2.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1097069227.29255.2.camel@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 837 Lines: 22 On Wed, Oct 06 2004, Alan Cox wrote: > On Mer, 2004-10-06 at 06:45, Jens Axboe wrote: > > > We should actually probably nuke most of the IDE blacklist, much of the > > > CD-ROM blacklist arose because we DMA rather than PIO'd the ATAPI CDB. > > > > Hmm? When have we ever done that? > > 2.0, 2.2, 2.4 to about 2.4.18 or so (Khalid Aziz eventually pinned it > down and fixed it). Ah, I think you are misreading it. It wasn't the DMA'ing of the atapi cdb, that was always pio'ed to the drive. But DMA for the command itself was turned on before the cdb had been transferred. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/