From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: [BUG] 2.6.29-rc1: ata_piix boot hang due to bmdma32 change Date: Sun, 25 Jan 2009 10:03:02 +0900 Message-ID: <497BBA46.3000605@kernel.org> References: <200901150842.n0F8gpZb014365@harpo.it.uu.se> <18805.35930.588019.518198@harpo.it.uu.se> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:55994 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754266AbZAYBDQ (ORCPT ); Sat, 24 Jan 2009 20:03:16 -0500 In-Reply-To: <18805.35930.588019.518198@harpo.it.uu.se> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Mikael Pettersson Cc: alan@lxorguk.ukuu.org.uk, linux-ide@vger.kernel.org Hello, Mikael Pettersson wrote: > The problem is still present in 2.6.29-rc2. > > More debugging first showed that only the specific machine mentioned > above is affected, as I've tested -rc1 on several other ata_piix boxes > with various oldish disks and cdroms and none of the others triggered > the hang. > > Secondly, the hang is due to the HP CD-Writer drive as having only it > on the second port suffices to produce the hang. It doesn't matter if > it's configured as master or slave. > > In any event, this shows that using 32-bit I/O ops should also be a > function of the drive you're talking to, not just the controller. If you connect the writer to another machine, does it make the machine hang too? -- tejun