From patchwork Sun Mar 16 17:03:15 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 3839581 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 09E27BF540 for ; Sun, 16 Mar 2014 17:05:17 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3275520200 for ; Sun, 16 Mar 2014 17:05:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3559720145 for ; Sun, 16 Mar 2014 17:05:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932153AbaCPREw (ORCPT ); Sun, 16 Mar 2014 13:04:52 -0400 Received: from mga09.intel.com ([134.134.136.24]:56398 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932108AbaCPREL (ORCPT ); Sun, 16 Mar 2014 13:04:11 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 16 Mar 2014 09:59:38 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,665,1389772800"; d="scan'208";a="501094245" Received: from unknown (HELO rzhang1-mobl4.ccr.corp.intel.com) ([10.255.21.226]) by orsmga002.jf.intel.com with ESMTP; 16 Mar 2014 10:03:47 -0700 From: Zhang Rui To: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: bhelgaas@google.com, matthew.garrett@nebula.com, rafael.j.wysocki@intel.com, dmitry.torokhov@gmail.com, Zhang Rui Subject: [PATCH V3 09/11] ACPI: introduce acpi platform exclude id list Date: Mon, 17 Mar 2014 01:03:15 +0800 Message-Id: <1394989397-2733-10-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1394989397-2733-1-git-send-email-rui.zhang@intel.com> References: <1394989397-2733-1-git-send-email-rui.zhang@intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For ACPI PIC (PNP0000) and Timer (PNP0100) device objects, although they have _HID control method, but they should not be enumerated to platform bus, because there will never be any platform drivers for them. Thus an exclude id list is introduced in this patch to prevent those platform device nodes from being created. Signed-off-by: Zhang Rui --- drivers/acpi/acpi_platform.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 33376a9..0cf291e 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -22,6 +22,17 @@ ACPI_MODULE_NAME("platform"); +static const struct acpi_device_id excluded_id_list[] = { + {"PNP0000", 0}, /* PIC */ + {"PNP0100", 0}, /* Timer */ + {"", 0}, +}; + +static bool is_exclusive_device(struct acpi_device *dev) +{ + return (!acpi_match_device_ids(dev, excluded_id_list)); +} + /** * acpi_create_platform_device - Create platform device for ACPI device node * @adev: ACPI device node to create a platform device for. @@ -48,6 +59,9 @@ int acpi_create_platform_device(struct acpi_device *adev, if (adev->physical_node_count) return 0; + if (is_exclusive_device(adev)) + return 0; + INIT_LIST_HEAD(&resource_list); count = acpi_dev_get_resources(adev, &resource_list, NULL, NULL); if (count < 0) {