From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751423AbWCFPM6 (ORCPT ); Mon, 6 Mar 2006 10:12:58 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751385AbWCFPM6 (ORCPT ); Mon, 6 Mar 2006 10:12:58 -0500 Received: from cavan.codon.org.uk ([217.147.92.49]:15778 "EHLO vavatch.codon.org.uk") by vger.kernel.org with ESMTP id S1751423AbWCFPM5 (ORCPT ); Mon, 6 Mar 2006 10:12:57 -0500 Date: Mon, 6 Mar 2006 15:12:52 +0000 From: Matthew Garrett To: Alan Cox Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: PATA failure with piix, works with libata Message-ID: <20060306151251.GA11678@srcf.ucam.org> References: <20060303183937.GA30840@srcf.ucam.org> <1141481507.10341.1.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1141481507.10341.1.camel@localhost> User-Agent: Mutt/1.5.9i X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@codon.org.uk X-SA-Exim-Scanned: No (on vavatch.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Mar 04, 2006 at 02:11:46PM +0000, Alan Cox wrote: > Make sure the IRQ is setup properly. Legacy mode IRQs are level > triggered which might fit this description. It's a shared PCI interrupt, so yeah, it's level. As I mentioned to Jeff, explicitly writing back the DMA status register while acknowledging interrupts works (and is what ata_piix does in PATA mode) -- Matthew Garrett | mjg59@srcf.ucam.org