From patchwork Fri Oct 30 17:25:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 314226 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 46333C4741F for ; Fri, 30 Oct 2020 17:26:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E798C208B6 for ; Fri, 30 Oct 2020 17:26:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726758AbgJ3R0G (ORCPT ); Fri, 30 Oct 2020 13:26:06 -0400 Received: from mga17.intel.com ([192.55.52.151]:49683 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726674AbgJ3R0F (ORCPT ); Fri, 30 Oct 2020 13:26:05 -0400 IronPort-SDR: qvAS1HWVHCwe0Vi/zWMjm/0nKqBPhtniyY4QsKZr3nth5c4tkbKmO0fDaGn4PD5Mw0WCMVzb7l Zg1n2hs84Lmw== X-IronPort-AV: E=McAfee;i="6000,8403,9790"; a="148495147" X-IronPort-AV: E=Sophos;i="5.77,434,1596524400"; d="scan'208";a="148495147" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2020 10:26:05 -0700 IronPort-SDR: 2aKRZ8RWwsakl6D6tiif2Vyas9OK7CnbS1qYfuCYHDw1KVxy/6brKIsmRYaUmHMlnRbskOQY2q gtcFDyZO26EA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,434,1596524400"; d="scan'208";a="356654231" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga002.fm.intel.com with ESMTP; 30 Oct 2020 10:26:04 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 7F5604E1; Fri, 30 Oct 2020 19:26:03 +0200 (EET) From: Andy Shevchenko To: "Rafael J. Wysocki" , Len Brown , linux-acpi@vger.kernel.org Cc: Andy Shevchenko Subject: [PATCH v3 4/6] resource: Introduce resource_intersection() for overlapping resources Date: Fri, 30 Oct 2020 19:25:54 +0200 Message-Id: <20201030172556.21686-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201030172556.21686-1-andriy.shevchenko@linux.intel.com> References: <20201030172556.21686-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 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 --- include/linux/ioport.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/linux/ioport.h b/include/linux/ioport.h index 40320eb5bc0e..ece1a8db309c 100644 --- a/include/linux/ioport.h +++ b/include/linux/ioport.h @@ -236,6 +236,16 @@ 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) {