From patchwork Mon Nov 2 21:00:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 314221 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 8435AC00A89 for ; Mon, 2 Nov 2020 21:00:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C804206E5 for ; Mon, 2 Nov 2020 21:00:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726020AbgKBVA2 (ORCPT ); Mon, 2 Nov 2020 16:00:28 -0500 Received: from mga11.intel.com ([192.55.52.93]:8786 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725833AbgKBVA2 (ORCPT ); Mon, 2 Nov 2020 16:00:28 -0500 IronPort-SDR: wsbWtstLOXIsb/9eK2/qbFyOW4dMBISPZmP1Z1wCCPLCMFWihMltnj/UcxWBlhf2uErGuC480e BjElN+l495kg== X-IronPort-AV: E=McAfee;i="6000,8403,9793"; a="165447779" X-IronPort-AV: E=Sophos;i="5.77,445,1596524400"; d="scan'208";a="165447779" 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; 02 Nov 2020 13:00:28 -0800 IronPort-SDR: gQDYPevJNS+SGJ8mq5x5nTjbq+NHjMkijqCS9Bf8bisOr63vpCkwqIafRc2tulGA8LnDm9UhSw RP8CKe+y3iLg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,445,1596524400"; d="scan'208";a="528149404" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 02 Nov 2020 13:00:26 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id DC8691F5; Mon, 2 Nov 2020 23:00:25 +0200 (EET) From: Andy Shevchenko To: linux-acpi@vger.kernel.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org Cc: Andy Shevchenko , "Rafael J . Wysocki" Subject: [PATCH v4 4/6] resource: Introduce resource_intersection() for overlapping resources Date: Mon, 2 Nov 2020 23:00:23 +0200 Message-Id: <20201102210025.53520-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201102210025.53520-1-andriy.shevchenko@linux.intel.com> References: <20201102210025.53520-1-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 Reviewed-by: Rafael J. Wysocki --- 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) {