From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ata_piix, laptop cdrom, ICH7: EH, limiting speed to PIO Date: Sun, 16 Sep 2007 13:56:32 +0200 Message-ID: <46ED19F0.8060205@gmail.com> References: <20070911212030.GA2817@slk.laptop> <6bffcb0e0709120933p6d58127fv3c85076fe41daaca@mail.gmail.com> <20070912200706.GA2620@slk.laptop> <46E849B7.9040402@googlemail.com> <20070912212025.GB2620@slk.laptop> <46E8663E.3080205@googlemail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from wa-out-1112.google.com ([209.85.146.176]:22130 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752107AbXIPL6Y (ORCPT ); Sun, 16 Sep 2007 07:58:24 -0400 Received: by wa-out-1112.google.com with SMTP id v27so1641204wah for ; Sun, 16 Sep 2007 04:58:23 -0700 (PDT) In-Reply-To: <46E8663E.3080205@googlemail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Michal Piotrowski Cc: Sergey Dolgov , linux-kernel@vger.kernel.org, linux-ide@vger.kernel.org Michal Piotrowski wrote: > Sergey Dolgov pisze: >> On Wed, Sep 12, 2007 at 10:19:03PM +0200, Michal Piotrowski wrote: >>> Sergey Dolgov pisze: >>>> Hi Michal, >>>> >>>> On Wed, Sep 12, 2007 at 06:33:20PM +0200, Michal Piotrowski wrote: >>>>> Hi Sergey, >>>>> >>>>> On 11/09/2007, Sergey Dolgov wrote: >>>>>> Hi! >>>>>> >>>>>> On my hp nx7300 laptop, 2 following scenarios can happen during bootup >>>>>> (see attachments for the full logs): the "good" one [1] and the one >>>>>> where multiple EHs lead to limiting the speed [2]. >>>>>> >>>>>> [1] one is more rare, but it seems to be persistent over reboots: once >>>>>> it happened, just rebooting the machine always results in behaviour >>>>>> like [1]. >>>>>> >>>>>> [1] results in a working cdrom from the start. An attempt to use cdrom >>>>>> after [2] happened results in even more EHs, resulting in "configured >>>>>> for PIO4", after which the cdrom is finaly working. >>>>>> >>>>>> The version I'm using is 2.6.23-rc6, but the same used to happen with >>>>>> the previous rc's, and probably with 2.6.22 too (I can check). >>>>> It would be great if you could check it. >>>> I've just built 2.6.22.6 with basically the same configuration, and >>>> the behaviour is just the same, i.e. both [1] and [2] still can >>>> happen. >>> Ok, thanks. >>> >>> BTW please check cables and PCU. >> What's a PCU? > > s/PCU/PSU - power supply unit > >> BTW, this only happens when using libata of course. The >> old CONFIG_IDE stuff works fine every time. > > This maybe one of libata weirdness (I really don't get it why some hardware > works perfectly fine with an old IDE and don't work well with libata). Hmmm... Is MWDMA2 mode used with ide driver too? -- tejun