From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: ata_piix on Thinkpad T30 - qc timeout on boot Date: Wed, 15 Nov 2006 21:06:15 +0900 Message-ID: <455B02B7.8030502@gmail.com> References: <1163563453.3100.24.camel@dv> <1163569390.4410.8.camel@dv> <20061115114748.7a51d03c@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from nz-out-0102.google.com ([64.233.162.201]:42542 "EHLO nz-out-0102.google.com") by vger.kernel.org with ESMTP id S966571AbWKOMGX (ORCPT ); Wed, 15 Nov 2006 07:06:23 -0500 Received: by nz-out-0102.google.com with SMTP id l1so27525nzf for ; Wed, 15 Nov 2006 04:06:22 -0800 (PST) In-Reply-To: <20061115114748.7a51d03c@localhost.localdomain> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Alan Cc: Pavel Roskin , linux-ide@vger.kernel.org Alan wrote: > On Wed, 15 Nov 2006 00:43:10 -0500 > Pavel Roskin wrote: > >> Hello again and sorry for post scriptum. >> >> On Tue, 2006-11-14 at 23:04 -0500, Pavel Roskin wrote: >> >>> ata2.01: qc timeout (cmd 0xa1) >>> ata2.01: failed to IDENTIFY (I/O error, err_mask=0x4) > > Just about everyone is seeing this with the new EH code and current > libata. If you back out the EH changes life seems to go back to normal. If you're talking about phantom device problem, it isn't related to EH itself. It's because of irq-pio which was merged together with EH and the fix is polling IDENTIFY. -- tejun