From patchwork Mon Aug 17 16:36:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 251751 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=-12.8 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 09112C433E3 for ; Mon, 17 Aug 2020 16:38:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E78462065C for ; Mon, 17 Aug 2020 16:38:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388847AbgHQQiD (ORCPT ); Mon, 17 Aug 2020 12:38:03 -0400 Received: from mga11.intel.com ([192.55.52.93]:33118 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731212AbgHQQhP (ORCPT ); Mon, 17 Aug 2020 12:37:15 -0400 IronPort-SDR: 4rqTdCYmMbAFQM9nC3KDgm6wQoHu5HiIhZfakyPPvfsgrtotPBgg0U7RVrTDUT4ZlFmsLlg8h1 gFcZXlqrVrVA== X-IronPort-AV: E=McAfee;i="6000,8403,9716"; a="152384833" X-IronPort-AV: E=Sophos;i="5.76,324,1592895600"; d="scan'208";a="152384833" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Aug 2020 09:36:52 -0700 IronPort-SDR: 6B84GQZZDmQsQbfxOHVj8n4Yz9idpXy12F6Hy7YJvRdrQFvDlowwYcuIhI8weEl6kZY1ZL9rBf iGUpFh8h/qSA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.76,324,1592895600"; d="scan'208";a="497066758" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 17 Aug 2020 09:36:48 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id DC1291C5; Mon, 17 Aug 2020 19:36:47 +0300 (EEST) From: Andy Shevchenko To: "Rafael J. Wysocki" , Len Brown , linux-acpi@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v2 5/8] resource: Introduce resource_intersection() for overlapping resources Date: Mon, 17 Aug 2020 19:36:44 +0300 Message-Id: <20200817163647.48982-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200817163647.48982-1-andriy.shevchenko@linux.intel.com> References: <20200817163647.48982-1-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. Signed-off-by: Andy Shevchenko --- v2: reused min/max (Rafael) include/linux/ioport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index a7d50b9a3406..b4c3ca229f66 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -233,6 +233,16 @@ 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 = max(r1->start, r2->start); + r->end = min(r1->end, r2->end); + return true; +} + static inline bool resource_union(struct resource *r1, struct resource *r2, struct resource *r) {