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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 49048C433DB for ; Wed, 23 Dec 2020 10:05:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D607224B2 for ; Wed, 23 Dec 2020 10:05:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728336AbgLWKEd (ORCPT ); Wed, 23 Dec 2020 05:04:33 -0500 Received: from foss.arm.com ([217.140.110.172]:47940 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726022AbgLWKEd (ORCPT ); Wed, 23 Dec 2020 05:04:33 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8274A11D4; Wed, 23 Dec 2020 02:03:47 -0800 (PST) Received: from p8cg001049571a15.blr.arm.com (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 4D55C3F718; Wed, 23 Dec 2020 02:03:44 -0800 (PST) From: Anshuman Khandual To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org Cc: linux-kernel@vger.kernel.org, Anshuman Khandual , Mathieu Poirier , Suzuki K Poulose , Mike Leach , Linu Cherian Subject: [PATCH 02/11] coresight: Do not scan for graph if none is present Date: Wed, 23 Dec 2020 15:33:34 +0530 Message-Id: <1608717823-18387-3-git-send-email-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1608717823-18387-1-git-send-email-anshuman.khandual@arm.com> References: <1608717823-18387-1-git-send-email-anshuman.khandual@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Suzuki K Poulose If a graph node is not found for a given node, of_get_next_endpoint() will emit the following error message : OF: graph: no port node found in / If the given component doesn't have any explicit connections (e.g, ETE) we could simply ignore the graph parsing. Cc: Mathieu Poirier Cc: Mike Leach Signed-off-by: Suzuki K Poulose Signed-off-by: Anshuman Khandual --- drivers/hwtracing/coresight/coresight-platform.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 3629b78..c594f45 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -90,6 +90,12 @@ static void of_coresight_get_ports_legacy(const struct device_node *node, struct of_endpoint endpoint; int in = 0, out = 0; + /* + * Avoid warnings in of_graph_get_next_endpoint() + * if the device doesn't have any graph connections + */ + if (!of_graph_is_present(node)) + return; do { ep = of_graph_get_next_endpoint(node, ep); if (!ep) -- 2.7.4