From patchwork Thu Mar 13 16:16:49 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Rui" X-Patchwork-Id: 3827061 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4F8E09F369 for ; Thu, 13 Mar 2014 16:20:37 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7D3272018E for ; Thu, 13 Mar 2014 16:20:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7E65420181 for ; Thu, 13 Mar 2014 16:20:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754518AbaCMQS2 (ORCPT ); Thu, 13 Mar 2014 12:18:28 -0400 Received: from mga02.intel.com ([134.134.136.20]:65316 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754491AbaCMQS0 (ORCPT ); Thu, 13 Mar 2014 12:18:26 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 13 Mar 2014 09:17:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,648,1389772800"; d="scan'208";a="471738845" Received: from unknown (HELO rzhang1-mobl4.ccr.corp.intel.com) ([10.255.21.213]) by orsmga001.jf.intel.com with ESMTP; 13 Mar 2014 09:17:23 -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 V2 09/13] ACPI: introduce acpi platform exclude id list Date: Fri, 14 Mar 2014 00:16:49 +0800 Message-Id: <1394727413-3587-10-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1394727413-3587-1-git-send-email-rui.zhang@intel.com> References: <1394727413-3587-1-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) {