From patchwork Thu May 15 06:44:16 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Rui X-Patchwork-Id: 4179461 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 6B88C9F271 for ; Thu, 15 May 2014 06:45:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A21D920328 for ; Thu, 15 May 2014 06:45:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 653162034B for ; Thu, 15 May 2014 06:45:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753870AbaEOGpJ (ORCPT ); Thu, 15 May 2014 02:45:09 -0400 Received: from mga01.intel.com ([192.55.52.88]:40282 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754304AbaEOGpH (ORCPT ); Thu, 15 May 2014 02:45:07 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga101.fm.intel.com with ESMTP; 14 May 2014 23:45:06 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,1057,1389772800"; d="scan'208";a="532238488" Received: from unknown (HELO rzhang1-toshiba.ccr.corp.intel.com) ([10.255.20.114]) by fmsmga001.fm.intel.com with ESMTP; 14 May 2014 23:45:02 -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 V6 11/11] ACPI: introduce acpi platform exclude id list Date: Thu, 15 May 2014 14:44:16 +0800 Message-Id: <1400136256-2218-12-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1400136256-2218-1-git-send-email-rui.zhang@intel.com> References: <1400136256-2218-1-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=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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), Timer (PNP0100) and DMA controller (PNP0200) 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 | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/acpi/acpi_platform.c b/drivers/acpi/acpi_platform.c index 33376a9..db89480 100644 --- a/drivers/acpi/acpi_platform.c +++ b/drivers/acpi/acpi_platform.c @@ -22,6 +22,18 @@ ACPI_MODULE_NAME("platform"); +static const struct acpi_device_id excluded_id_list[] = { + {"PNP0000", 0}, /* PIC */ + {"PNP0100", 0}, /* Timer */ + {"PNP0200", 0}, /* AT DMA Controller */ + {"", 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 +60,9 @@ 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) {