From patchwork Thu May 22 18:02:33 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Zhang, Rui" X-Patchwork-Id: 4225321 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 1D6BC9F1CD for ; Thu, 22 May 2014 18:04:02 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4EA5D2037E for ; Thu, 22 May 2014 18:04:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EB81201DC for ; Thu, 22 May 2014 18:04:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751739AbaEVSDp (ORCPT ); Thu, 22 May 2014 14:03:45 -0400 Received: from mga02.intel.com ([134.134.136.20]:43912 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752646AbaEVSDi (ORCPT ); Thu, 22 May 2014 14:03:38 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga101.jf.intel.com with ESMTP; 22 May 2014 11:03:37 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.98,888,1392192000"; d="scan'208";a="516172170" Received: from unknown (HELO rzhang1-toshiba.ccr.corp.intel.com) ([10.255.20.115]) by orsmga001.jf.intel.com with ESMTP; 22 May 2014 11:03:12 -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, mika.westerberg@linux.intel.com, Zhang Rui Subject: [PATCH V7 11/11] ACPI: introduce acpi platform exclude id list Date: Fri, 23 May 2014 02:02:33 +0800 Message-Id: <1400781753-2682-12-git-send-email-rui.zhang@intel.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1400781753-2682-1-git-send-email-rui.zhang@intel.com> References: <1400781753-2682-1-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) {