From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 13 Jan 2001 22:40:28 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 13 Jan 2001 22:40:19 -0500 Received: from SMTP-OUT003.ONEMAIN.COM ([63.208.208.73]:56408 "HELO smtp01.mail.onemain.com") by vger.kernel.org with SMTP id ; Sat, 13 Jan 2001 22:40:09 -0500 Message-ID: <3A611FCC.931D8CA0@mcn.net> Date: Sat, 13 Jan 2001 20:41:00 -0700 From: TimO Organization: Don't you mean Disorganization!? X-Mailer: Mozilla 4.73 [en] (X11; I; Linux 2.4.1-pre2 i686) X-Accept-Language: en MIME-Version: 1.0 To: Vojtech Pavlik CC: linux-kernel@vger.kernel.org Subject: Re: ide.2.4.1-p3.01112001.patch In-Reply-To: <20010112212427.A2829@suse.cz> <20010113150046.E1155@suse.cz> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Vojtech Pavlik wrote: > > Ok, here goes the patch. > > Note that with this patch, all VIA users will get IDE transferrates > about 3 MB/sec as opposed to about 20 MB/sec without it (and with > UDMA66). > > This patch disables automatic DMA on all VIA chipsets, including the > ancient 82c561 for 486's, and up to the 686a UDMA66 chipset. > > Also note that enabling the DMA later with hdparm -X66 -d1 or similar > command is not safe, and usually works by pure luck on VIA chipsets. > This however, would need some non-minor changes to the generic code to > fix. > > But perhaps it's still worth ... > > -- > Vojtech Pavlik > SuSE Labs > > _ouch_ Will -X66 -d1c1m16 be as stable with this patch as version 2.1e has been for me?? It has always (auto)set transfer speeds properly and I have never seen corruption with my 686a -- 'cept when patching from test11-pre7 to test12-pre1, and I'm pretty sure that was from other factors. =============== -- Tim - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/