From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: ata link not reset properly Date: Sun, 27 Jun 2010 22:27:32 +0400 Message-ID: <4C279814.9030100@ru.mvista.com> References: <4C223F8A.9030306@odi.ch> <4C224429.6010705@kernel.org> <4C224502.2040206@kernel.org> <4C2305A8.4070708@odi.ch> <4C24C903.1070705@kernel.org> <4C24EED2.4020300@odi.ch> <4C257CEE.2070309@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f46.google.com ([209.85.214.46]:45772 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753250Ab0F0S2f (ORCPT ); Sun, 27 Jun 2010 14:28:35 -0400 In-Reply-To: <4C257CEE.2070309@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Robert Hancock Cc: =?ISO-8859-1?Q?Ortwin_Gl=FCck?= , Tejun Heo , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Hello. Robert Hancock wrote: >> On 25.06.2010 17:19, Tejun Heo wrote: >>> Patch attached, but please see below. >> Cheers, I will give it a try and provide feedback if "it" happens again. >>> Is it PATA? >> Yes. This chipset doesn't have SATA, only PATA. > Ahh, ok, it's not sata_nv at all then, it's pata_amd. On the same chip, > totally different controller though. > PATA doesn't normally use hard-resets as a means of error recovery - > that would mean hitting the RESET line, which I don't think most > controllers can do on software command (it usually only gets asserted on > power up or hitting the reset button), unlike on SATA where there's a > defined way to trigger a COMRESET which is mostly equivalent. Also, that > resets both devices on the channel, unlike soft reset which is specific > to one device. PATA soft reset affects both devices too. Unless you mean ATAPI Device Reset command. MBR, Sergei