From patchwork Fri May 31 14:15:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 10970309 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BA71918A6 for ; Fri, 31 May 2019 14:16:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 75346289FA for ; Fri, 31 May 2019 14:16:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 68C7D28D2C; Fri, 31 May 2019 14:16:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C3F8289FA for ; Fri, 31 May 2019 14:16:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726421AbfEaOQI (ORCPT ); Fri, 31 May 2019 10:16:08 -0400 Received: from mga05.intel.com ([192.55.52.43]:8345 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726555AbfEaOQG (ORCPT ); Fri, 31 May 2019 10:16:06 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 May 2019 07:16:06 -0700 X-ExtLoop1: 1 Received: from black.fi.intel.com (HELO black.fi.intel.com.) ([10.237.72.28]) by fmsmga001.fm.intel.com with ESMTP; 31 May 2019 07:16:04 -0700 From: Heikki Krogerus To: "Rafael J. Wysocki" Cc: Hans de Goede , Greg Kroah-Hartman , Andy Shevchenko , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Subject: [PATCH v5 07/16] ACPI / property: Don't limit named child node matching to data nodes Date: Fri, 31 May 2019 17:15:38 +0300 Message-Id: <20190531141547.22728-8-heikki.krogerus@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190531141547.22728-1-heikki.krogerus@linux.intel.com> References: <20190531141547.22728-1-heikki.krogerus@linux.intel.com> MIME-Version: 1.0 Sender: platform-driver-x86-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There is no reason why we should limit the use of fwnode_get_named_child_node() to data nodes only. Signed-off-by: Heikki Krogerus Tested-by: Hans de Goede --- drivers/acpi/property.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) diff --git a/drivers/acpi/property.c b/drivers/acpi/property.c index 9d460a859be0..39c64291098f 100644 --- a/drivers/acpi/property.c +++ b/drivers/acpi/property.c @@ -603,15 +603,29 @@ static struct fwnode_handle * acpi_fwnode_get_named_child_node(const struct fwnode_handle *fwnode, const char *childname) { + char name[ACPI_PATH_SEGMENT_LENGTH]; struct fwnode_handle *child; + struct acpi_buffer path; + acpi_status status; - /* - * Find first matching named child node of this fwnode. - * For ACPI this will be a data only sub-node. - */ - fwnode_for_each_child_node(fwnode, child) - if (acpi_data_node_match(child, childname)) + path.length = sizeof(name); + path.pointer = name; + + fwnode_for_each_child_node(fwnode, child) { + if (is_acpi_data_node(child)) { + if (acpi_data_node_match(child, childname)) + return child; + continue; + } + + status = acpi_get_name(ACPI_HANDLE_FWNODE(child), + ACPI_SINGLE_NAME, &path); + if (ACPI_FAILURE(status)) + break; + + if (!strncmp(name, childname, ACPI_NAMESEG_SIZE)) return child; + } return NULL; }