From patchwork Mon May 17 13:59:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 440125 Delivered-To: patch@linaro.org Received: by 2002:a02:7a1b:0:0:0:0:0 with SMTP id a27csp1168636jac; Mon, 17 May 2021 08:02:35 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzS9J5Mp3zD7kKiLIkxcJT7TQFQK2nqx9/lzABok3XodYra6q8/RHehinbumgb+GTno+B6m X-Received: by 2002:a50:eb08:: with SMTP id y8mr524892edp.89.1621263755054; Mon, 17 May 2021 08:02:35 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1621263755; cv=none; d=google.com; s=arc-20160816; b=Sj4U58VN0tO1rIQkIP03DdIGJLRgffPSLQEGkwsLc87LUOCrhM4+MmLXaM5Pw9721X 7rShpeIsEAx/HB+n6l0tZWB259LmMjjlJNKFFHT+7tUp7wYrzXkff76sxDo8lsUHqZE8 bZIGNKTSCFSnHfUZnKCFzHbLXMpbWp5PIEan4BebHKfnfHFjYUWKKzn2kbKB/WaOxhs8 ENkTWXyHSZB1rSArFCiHT4H0s6ty0zYjH4LvTnH+ayR1WUvZ4Sa+CWtHTUzAVvaFJYm7 XAcUCTGo+SVNWE3kOwm4cHUO4y+ykQXzVCcEOekvtmudez1w4YHI1eroozGjpsJ+G7BI C64A== 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=TJQsoi5mMTqVvZ/Rwx23T/FRGxXJmQRdY8Pvn8C1lbbNrgDmJE3r9LryS79X7vnoya P8NSDGFjl9jxnIxZus5XlDTRQRKgfVH9CjuZCGIQR+HF4ciDOtjehw9qr24fBHM1zQWc CXkIJRcFQaDHlCIB1RuycPNW6DCq3z038P3CgDq6xbFxJQjdgHlGTFqdukIpf060iqQq 4sHJ4UKpy546Jktp9eDNAAuqVtnJY25u6rTd876djb31IDS0HHHNBt7vkcHl/m4k5Kty aQNBzUZn4eoOOkFHGV+z/ETQACg+7BN9hGxFlQiBs6cdbOjeMZ81eQB9DPdiTz07bp6V aSKQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=a6RYjBU+; 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 f22si13208552edx.581.2021.05.17.08.02.34; Mon, 17 May 2021 08:02:35 -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=a6RYjBU+; 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 S242528AbhEQPDt (ORCPT + 12 others); Mon, 17 May 2021 11:03:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:34144 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242123AbhEQPBs (ORCPT ); Mon, 17 May 2021 11:01:48 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 07B5F61361; Mon, 17 May 2021 14:27:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621261636; bh=b3RxAnqZyvSpqfjl9rUegzuE+IJ21GBgWwQc2A7a/zk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=a6RYjBU+hmPSXzcCvXevnZu9iYNCAGKfiRRjVqU2KBBpHbTHuZIVK10YWDJFsvcw2 fRWTuL/w8HQtXtyBqjhm5vr4zdGQAOZFmsw3XLXpWoxRH/mbYJL/NFRo5tK4cpXHSy uR3a77mtyPS81LHVqHwKQHQVuYYVZD97kE+CUgzU= 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 5.10 043/289] coresight: Do not scan for graph if none is present Date: Mon, 17 May 2021 15:59:28 +0200 Message-Id: <20210517140306.649036604@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210517140305.140529752@linuxfoundation.org> References: <20210517140305.140529752@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)