From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Q: acpi-cpufreq module auto-loading after processor driver change Date: Thu, 30 May 2013 23:38:37 +0200 Message-ID: <1511440.Xd41mcOoEa@vostro.rjw.lan> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7Bit Return-path: Received: from hydra.sisk.pl ([212.160.235.94]:55175 "EHLO hydra.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757750Ab3E3V3l (ORCPT ); Thu, 30 May 2013 17:29:41 -0400 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Greg Kroah-Hartman Cc: Linux PM list , ACPI Devel Maling List Hi Greg, I've noticed during recent testing that with this commit applied: http://git.kernel.org/cgit/linux/kernel/git/rafael/linux-pm.git/commit/?h=acpi-hotplug&id=ac212b6980d8d5eda705864fc5a8ecddc6d6eacc on my openSUSE (and Tubmbleweed) installations I need to modify /etc/sysconfig/kernel to make mkinitrd put the acpi-cpufreq module into the initramfs or otherwise it won't be loaded automatically. I think I understand why it needs to be present in the initramfs along the processor module for the automatic loading to work (acpi_processor_load_module() seems to need that), but before the above commit it wasn't necessary to make any changes to /etc/sysconfig/kernel and acpi-cpufreq was loaded automatically anyway. Unfortunately, my experience with udev and related things is kind of limited and I have no idea what exactly makes the difference. Can you please have a look and help me understand that? Rafael -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.