From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B52F6C433F5 for ; Wed, 6 Oct 2021 11:00:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 89E04610C9 for ; Wed, 6 Oct 2021 11:00:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229824AbhJFLCQ (ORCPT ); Wed, 6 Oct 2021 07:02:16 -0400 Received: from mail.kernel.org ([198.145.29.99]:34104 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237936AbhJFLCP (ORCPT ); Wed, 6 Oct 2021 07:02:15 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9BBD6610CC; Wed, 6 Oct 2021 11:00:23 +0000 (UTC) Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mY4er-00F5p9-Hr; Wed, 06 Oct 2021 12:00:21 +0100 Date: Wed, 06 Oct 2021 12:00:21 +0100 Message-ID: <87ee8yquyi.wl-maz@kernel.org> From: Marc Zyngier To: Rui Salvaterra Cc: tglx@linutronix.de, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [REGRESSION][BISECTED] 5.15-rc1: Broken AHCI on NVIDIA ION (MCP79) In-Reply-To: References: User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: rsalvaterra@gmail.com, tglx@linutronix.de, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi Rui, On Wed, 06 Oct 2021 09:50:48 +0100, Rui Salvaterra wrote: > > Hi, Thomas, > > I'm sorry for reporting this so late in the cycle, I wasn't expecting > being the only one affected. :) > "PCI/MSI: Use new mask/unmask functions" broke boot for my ION/Atom > 330 system. Dmesg shows > > failed to IDENTIFY (I/O error, err_mask=0x4) > > and the system drops to an initramfs shell. Let me know if you need > any additional info (DMI dump and/or .config, for example). Could you please give more context for this error? I assume that this is some ATA device probing, but this is unclear at best. A full dmesg definitely help. 'lspci -vvnn' would also be useful to understand what the device wants in terms of PCI configuration. Thanks, M. -- Without deviation from the norm, progress is not possible.