From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: SATA SB600 works in 2.6.20.4 but not in 2.6.21-rc5 with irqpoll parameter Date: Tue, 27 Mar 2007 14:02:36 +0900 Message-ID: <4608A56C.5020605@gmail.com> References: <4608807F.6040202@gmail.com> <4608820D.2000203@gmail.com> <46088328.8070601@gmail.com> <460883FB.1030000@gmail.com> <460896D8.8040203@gmail.com> <460899D4.6070708@gmail.com> <46089F28.8060803@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from wr-out-0506.google.com ([64.233.184.235]:44762 "EHLO wr-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964791AbXC0FCm (ORCPT ); Tue, 27 Mar 2007 01:02:42 -0400 Received: by wr-out-0506.google.com with SMTP id 76so1797372wra for ; Mon, 26 Mar 2007 22:02:41 -0700 (PDT) In-Reply-To: <46089F28.8060803@gmail.com> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: =?ISO-8859-1?Q?Mat=ED=ADas_Alejandro_Torres?= Cc: linux-ide@vger.kernel.org, Conke Hu Mat=ED=ADas Alejandro Torres wrote: >=20 >> >> That's weird. So, with irqpoll, 2.6.21-rc5 doesn't work while >> 2.6.20.4 does? I looked through the changelog but nothing looks >> suspicious at the first glance. >> >> Can you try 'pci=3Dnomsi'? At first, I though you weren't using MSI= =2E=20 >> You apparently are. >> >=20 > Yes I can. It works too. Thanks for the detailed reporting. It seems MSI in those ATI chipsets are broken. CC'ing Conke Hu. Conke Hu, the whole thread is available at the following URL. It seems we'll have to fix or disable MSI suppor= t in the affected chipsets. Please advise. http://thread.gmane.org/gmane.linux.ide/17516 --=20 tejun