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=-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=unavailable 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 3B969C2D0A3 for ; Tue, 3 Nov 2020 21:55:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EAAFE22404 for ; Tue, 3 Nov 2020 21:55:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731670AbgKCVy5 (ORCPT ); Tue, 3 Nov 2020 16:54:57 -0500 Received: from mga09.intel.com ([134.134.136.24]:6426 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730977AbgKCUpO (ORCPT ); Tue, 3 Nov 2020 15:45:14 -0500 IronPort-SDR: 7pj/4XkEfzeWdg7KYuOVTJ4IDsZDRPuTQ0IfVNjNHKZV+a/jqMJfAtiibtGco6uC/vwVHCUT75 VRUmC/cg56cg== X-IronPort-AV: E=McAfee;i="6000,8403,9794"; a="169259816" X-IronPort-AV: E=Sophos;i="5.77,448,1596524400"; d="scan'208";a="169259816" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Nov 2020 12:45:13 -0800 IronPort-SDR: SzOhlsCjMXhvOzb4ueUaFyBYNBQZt8i2BNuu7DBjgPm2mahRZOJvimtm5dprQy1eRiysMmOi7u KTQAKf2TwNeg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,448,1596524400"; d="scan'208";a="363163837" Received: from black.fi.intel.com ([10.237.72.28]) by FMSMGA003.fm.intel.com with ESMTP; 03 Nov 2020 12:45:11 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id E5BE115E; Tue, 3 Nov 2020 22:45:10 +0200 (EET) From: Andy Shevchenko To: linux-acpi@vger.kernel.org, Greg Kroah-Hartman , linux-kernel@vger.kernel.org Cc: Andy Shevchenko , Hanjun Guo , "Rafael J . Wysocki" Subject: [PATCH v6 4/7] resource: Introduce resource_intersection() for overlapping resources Date: Tue, 3 Nov 2020 22:45:07 +0200 Message-Id: <20201103204510.19154-5-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201103204510.19154-1-andriy.shevchenko@linux.intel.com> References: <20201103204510.19154-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Hanjun Guo 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) { -- 2.28.0