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[2620:137:e000::1:20]) by mx.google.com with ESMTP id v10-20020a1709029a0a00b001768452d4d0si23874681plp.30.2022.10.21.01.45.42; Fri, 21 Oct 2022 01:45:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@foss.st.com header.s=selector1 header.b=rpnShfZo; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foss.st.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229981AbiJUIpV (ORCPT + 99 others); Fri, 21 Oct 2022 04:45:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229779AbiJUIpT (ORCPT ); Fri, 21 Oct 2022 04:45:19 -0400 Received: from mx07-00178001.pphosted.com (mx08-00178001.pphosted.com [91.207.212.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A4C155A168; Fri, 21 Oct 2022 01:45:14 -0700 (PDT) Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 29L6HQFj014461; Fri, 21 Oct 2022 10:44:53 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=selector1; bh=nN+eZrxubuUpxtvA/HEiuz0ghp0wsel2bTnX1jUh+Mg=; b=rpnShfZowOwph9MLX1pAC7sSejMuGfhtta50et9sEhcUX1Uv1XsSenHCPriiu0ngpN+5 r5EnoQjrK39JkeYHlBAYryo5JDXmdYDlUF+TBlSaPHgbi9edz1wgofhac4v2WMAo36op MLiRfJ0H/MpVfM+h2mm5WUOdSOxO+1WEMirBz50ZrmekMHicvo+sj+u0071tqZtMEHHI 5P1QOaICAqqBXbvLHgGNqSwZzFrKySbnITdL+68wfeBOaAB1Nl/ll0ymy3iiJDVk7SjC G9FKSiI0wPe/9s9IcwhOsgckwbdqBZl1qe14SC0JWPWpO8sXxgGhPl3BT/t0rpILJHrG kQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3k9tfpy660-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Oct 2022 10:44:53 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 34DB7100034; Fri, 21 Oct 2022 10:44:48 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node1.st.com [10.75.129.69]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 1EC5F21B525; Fri, 21 Oct 2022 10:44:48 +0200 (CEST) Received: from localhost (10.201.21.93) by SHFDAG1NODE1.st.com (10.75.129.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Fri, 21 Oct 2022 10:44:47 +0200 From: Alexandre Torgue To: Masahiro Yamada , Michal Marek , CC: , , , Subject: [PATCH] scripts: dtc: only show unique unit address warning for enabled nodes Date: Fri, 21 Oct 2022 10:44:47 +0200 Message-ID: <20221021084447.5550-1-alexandre.torgue@foss.st.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.201.21.93] X-ClientProxiedBy: EQNCAS1NODE3.st.com (10.75.129.80) To SHFDAG1NODE1.st.com (10.75.129.69) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-21_03,2022-10-20_01,2022-06-22_01 X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_LOW,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1747286185338038707?= X-GMAIL-MSGID: =?utf-8?q?1747286185338038707?= In some cases an hardware peripheral can be used for two exclusive usages. For example, on STM32MP15 we have the same peripheral for I2S and SPI. We have dedicated driver for each usage and so a dedicated device node in devicetree. To avoid to get useless warnings running "make W=1 dtbs", this patch adds the "-Wunique_unit_address_if_enabled" flag for a make with W=1. In this case we will detect a duplicate address only if both devices are enabled in the devicetree, which is a real error case. Signed-off-by: Alexandre Torgue diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 3aa384cec76b..6f077200b967 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -344,6 +344,9 @@ DTC_FLAGS += -Wno-unit_address_vs_reg \ -Wno-graph_child_address \ -Wno-simple_bus_reg \ -Wno-unique_unit_address +else +DTC_FLAGS += -Wno-unique_unit_address \ + -Wunique_unit_address_if_enabled endif ifneq ($(findstring 2,$(KBUILD_EXTRA_WARN)),)