From patchwork Mon May 17 13:58:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 440103 Delivered-To: patch@linaro.org Received: by 2002:a02:7a1b:0:0:0:0:0 with SMTP id a27csp1124388jac; Mon, 17 May 2021 07:08:33 -0700 (PDT) X-Google-Smtp-Source: ABdhPJy/dkFuA360xoJoM1/jr5Lif4jvogBCisAnCqnwX8kBXCepN0AXGvRwLLRcTQcwvDO+6Fx1 X-Received: by 2002:a02:cf32:: with SMTP id s18mr181914jar.31.1621260513446; Mon, 17 May 2021 07:08:33 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1621260513; cv=none; d=google.com; s=arc-20160816; b=tipuzl/dBYD60Vr+dvqdkpElVeRsGCWLihh80pJ2ny2PhvUzHg1k9CMFxkvU9WNZ0q O7NxIkAV60IzoqmYaUdX8I006FW+HY365qbP4XrxxE1rYJFcq9uzG5YogmyrhwnAu7RQ CPUrdP4MxUn3fHPCW3IEPWlEdXaCB9xZCYEIBdSDNxKuMdWx7M7ABlMvw3iCUvHvBp6b gt52UYVauINJC+c5jsaS3WH15+P4xa4vj1VE9pC8HBb4NiGIBHdrE1QQ6oVwLLKKvHAv JJdtQG1/EzDRgFSI7vkBLDEY0kzMiOB6yZI3BiDqtDxDwvyVVXK2ttBWYsiY21pq2f3s QBIQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :user-agent:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=JWrNySf9rUTwhVaHUj0w9u47JeX5ZBUB68S6JDWi50M=; b=DH+39i0YtCgzbzXkM/NppoEb6dU8sBCV98ML4Swd2CKOJrXT0slyc5WOLrboB3EJes 5p48ZuiiKwgDUtkP6Y0092zaKQN3Zds63SHiUBjZf2DJN28JZlgYrVaGxGFCkvViIJit CuVh1tPKhAsuXptORmPGacI4/UsU/fJDr8bVPRc5iTI/twFVYX3i4rP6CXfFF0VBFBNx v/GtHpq75+gaTzp93Ze9ktr9eZojthJhaP1GnT2s0+pzBV/zQJv1iDIu0unsr0RrU5NH CCPkSr+6MC8JpZcqJ4oLNT0ME/SG0at/mxHCvx8UKW7Hg78kFOBaIM//rF434selu1Nr i75A== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=Hi2ROHJN; spf=pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id f11si20249084ila.138.2021.05.17.07.08.33; Mon, 17 May 2021 07:08:33 -0700 (PDT) Received-SPF: pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=Hi2ROHJN; spf=pass (google.com: domain of stable-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=stable-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237753AbhEQOJn (ORCPT + 12 others); Mon, 17 May 2021 10:09:43 -0400 Received: from mail.kernel.org ([198.145.29.99]:58468 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238091AbhEQOHs (ORCPT ); Mon, 17 May 2021 10:07:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4D4C061352; Mon, 17 May 2021 14:06:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621260378; bh=b3RxAnqZyvSpqfjl9rUegzuE+IJ21GBgWwQc2A7a/zk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Hi2ROHJNCbUPp9ztCycpER4feBKwJ+glXY4A/xylE7N2RteOLPFPLEXCUSkrWATIR 2635fbqXO3/KBSY1WYT7BQdmOofPmGv5aRkZnow7n8ge6OFZr5/JFjFcs/zZ0AYaKU MJCug16bO6PlxGohoywxaHkWVt50bNMPu/iJCfrQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Mike Leach , Leo Yan , Suzuki K Poulose , Mathieu Poirier , Sasha Levin Subject: [PATCH 5.12 054/363] coresight: Do not scan for graph if none is present Date: Mon, 17 May 2021 15:58:40 +0200 Message-Id: <20210517140304.432526388@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140302.508966430@linuxfoundation.org> References: <20210517140302.508966430@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Suzuki K Poulose [ Upstream commit 2b921b671a8d29c2adb255a86409aad1e3267309 ] 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. As for any legacy component where this is mandatory, the device will not be usable as before this patch. Updating the DT bindings to Yaml and enabling the schema checks can detect such issues with the DT. Cc: Mike Leach Cc: Leo Yan Signed-off-by: Suzuki K Poulose Link: https://lore.kernel.org/r/20210405164307.1720226-11-suzuki.poulose@arm.com Signed-off-by: Mathieu Poirier Signed-off-by: Sasha Levin --- drivers/hwtracing/coresight/coresight-platform.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.30.2 diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 3629b7885aca..c594f45319fc 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)