From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932156AbXCRK0A (ORCPT ); Sun, 18 Mar 2007 06:26:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932128AbXCRKZ7 (ORCPT ); Sun, 18 Mar 2007 06:25:59 -0400 Received: from saeurebad.de ([85.214.36.134]:43780 "EHLO saeurebad.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932156AbXCRKZ7 (ORCPT ); Sun, 18 Mar 2007 06:25:59 -0400 Date: Sun, 18 Mar 2007 11:21:32 +0100 From: Johannes Weiner To: linux-kernel@vger.kernel.org Subject: ACPI initialization failure with v2.6.21-rc4 Message-ID: <20070318102131.GA27142@leiferikson> Mail-Followup-To: linux-kernel@vger.kernel.org References: <20070318094248.GP752@stusta.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070318094248.GP752@stusta.de> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, The kernel version mentioned in the subject won't boot because the ACPI system does not get initialized; the system freezes on an outb() in acpi_os_write_port() i.e. it does not do anything anymore and just hangs. Here is the `stack trace' I managed to extract via debugging output: -- acpi_os_write_port(0xb2, 240, 8) -- acpi_hw_set_mode(ACPI_SYS_MODE_ACPI) -- acpi_enable() -- acpi_enable_subsystem(~ACPI_NO_ACPI_ENABLE) -- acpi_early_init() ... Notes: * acpi_os_write_port(): I printk'd the arguments; the port formatted with %#x and the value with %u. * acpi_enable_subsystem(): I removed ACPI_NO_HARDWARE_INIT from the arguments because it is not used anymore. In this context I want to mention that it probably can be removed from include/acpi/actypes.h generally. Random question: I noticed that acpi_gbl_FADT is declared in include/acpi/acglobal.h but where is it actually defined and initialized? HTH, Hannes