From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 43902C43381 for ; Fri, 1 Mar 2019 18:52:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0DE55204FD for ; Fri, 1 Mar 2019 18:52:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388086AbfCASwa (ORCPT ); Fri, 1 Mar 2019 13:52:30 -0500 Received: from foss.arm.com ([217.140.101.70]:40508 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726195AbfCASwa (ORCPT ); Fri, 1 Mar 2019 13:52:30 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 16EA280D; Fri, 1 Mar 2019 10:52:30 -0800 (PST) Received: from beelzebub.austin.arm.com (beelzebub.austin.arm.com [10.118.12.119]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 9B2A63F575; Fri, 1 Mar 2019 10:52:29 -0800 (PST) From: Jeremy Linton To: linux-acpi@vger.kernel.org Cc: rjw@rjwysocki.net, lenb@kernel.org, sudeep.holla@arm.com, Lorenzo.Pieralisi@arm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jeremy Linton Subject: [PATCH] ACPI/PPTT: Simplify leaf node detection. Date: Fri, 1 Mar 2019 12:52:21 -0600 Message-Id: <20190301185221.608501-1-jeremy.linton@arm.com> X-Mailer: git-send-email 2.17.2 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ACPI 6.3 bumps the PPTT table revision and adds a LEAF_NODE flag. This allows us to avoid a second pass through the table to assure that the node in question is a leaf. Signed-off-by: Jeremy Linton --- drivers/acpi/pptt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/pptt.c b/drivers/acpi/pptt.c index ad31c50de3be..065c4fc245d1 100644 --- a/drivers/acpi/pptt.c +++ b/drivers/acpi/pptt.c @@ -209,6 +209,9 @@ static int acpi_pptt_leaf_node(struct acpi_table_header *table_hdr, struct acpi_pptt_processor *cpu_node; u32 proc_sz; + if (table_hdr->revision > 1) + return (node->flags & ACPI_PPTT_ACPI_LEAF_NODE); + table_end = (unsigned long)table_hdr + table_hdr->length; node_entry = ACPI_PTR_DIFF(node, table_hdr); entry = ACPI_ADD_PTR(struct acpi_subtable_header, table_hdr, -- 2.20.1