From patchwork Thu Aug 13 17:57:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 251758 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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, 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 45EF7C433DF for ; Thu, 13 Aug 2020 17:57:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 203DD20838 for ; Thu, 13 Aug 2020 17:57:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726192AbgHMR5d (ORCPT ); Thu, 13 Aug 2020 13:57:33 -0400 Received: from mga12.intel.com ([192.55.52.136]:7942 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726167AbgHMR5d (ORCPT ); Thu, 13 Aug 2020 13:57:33 -0400 IronPort-SDR: ezOJPpHTdLrGnVkaaUJHpWqcFDzZSHGcSF2IvY8NyMHHCPSowe9NaOVYOzFaVLvqvE4NuZcY0K PNwcetBt7gXg== X-IronPort-AV: E=McAfee;i="6000,8403,9712"; a="133815475" X-IronPort-AV: E=Sophos;i="5.76,309,1592895600"; d="scan'208";a="133815475" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2020 10:57:32 -0700 IronPort-SDR: 8SejSHGFkAMGV2hia6m0PHuYzTYxatw34lyB72LdUBimHJmhvJV4hcTZyTG3JZm3oxPEa/eHU5 u1YAFycxiDVQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,309,1592895600"; d="scan'208";a="470308891" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga005.jf.intel.com with ESMTP; 13 Aug 2020 10:57:31 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 6609536B; Thu, 13 Aug 2020 20:57:30 +0300 (EEST) From: Andy Shevchenko To: "Rafael J. Wysocki" , Len Brown , linux-acpi@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v1 4/7] resource: Introduce resource_intersection() for overlapping resources Date: Thu, 13 Aug 2020 20:57:26 +0300 Message-Id: <20200813175729.15088-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200813175729.15088-1-andriy.shevchenko@linux.intel.com> References: <20200813175729.15088-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org There will be at least one user that can utilize new helper. Provide the helper for future user and for wider use. Deliberately avoid min()/max() macro as they are still parts of kernel.h which is quite a burden to be included here in order to avoid circular dependencies. Signed-off-by: Andy Shevchenko --- include/linux/ioport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index c98df0ec7422..1d5ab2e7f9eb 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -232,6 +232,16 @@ static inline bool resource_overlaps(struct resource *r1, struct resource *r2) return (r1->start <= r2->end && r1->end >= r2->start); } +static inline bool +resource_intersection(struct resource *r1, struct resource *r2, struct resource *r) +{ + if (!resource_overlaps(r1, r2)) + return false; + r->start = r1->start > r2->start ? r1->start : r2->start; + r->end = r1->end < r2->end ? r1->end : r2->end; + return true; +} + static inline bool resource_union(struct resource *r1, struct resource *r2, struct resource *r) {