From patchwork Thu Aug 1 06:13:50 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Carrasco X-Patchwork-Id: 13749728 Received: from mail-wr1-f54.google.com (mail-wr1-f54.google.com [209.85.221.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 606EF16D9CC; Thu, 1 Aug 2024 06:13:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492841; cv=none; b=mzyKooZ1pG9kk4B2QwlovoLqzfzFByHpIZh22j4V2Df7Oazwa6jaq8LJe968fp5ECB1ZMJEs1wj6mHVq9brWIaYuL6Hb07BOtQJoqIjv89xvTlmyzoFbdjRK95rcaGS7htCjywlmFdkxYyVvPKyrz6PIA714NQ2aNXlFubM7wu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722492841; c=relaxed/simple; bh=QFolg12C6V7SfGr1X/Q07nrFu7zCcR/xL99lde/5xoQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=XBV/a9NA3eA8K1I+HooYNyaYPt9hsAE1iW34qjm2QJz9f6/qYrt+m6sI0/4Hl+CLGRoa90XY+/7tiU+TLMgxI486hNOaEyjwlsOtsCSRX9yJ+PQiOyQoIUakwrKGlsCvgZ07y+GE3DjbXh8dhuSvZvG7nWtKeUnlEjGjlwYIG8M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=A1foEVOA; arc=none smtp.client-ip=209.85.221.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="A1foEVOA" Received: by mail-wr1-f54.google.com with SMTP id ffacd0b85a97d-3684407b2deso3294794f8f.1; Wed, 31 Jul 2024 23:13:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1722492837; x=1723097637; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=cZB0CSSKP7vKOy+3pwEVaiFc3nb6WEPjBuqxABKIpgI=; b=A1foEVOAZwu71P2Di3Iw//nZMpZ1EoMYh41DlfHJXChAft2EhgfRdo4PnQn74TSg5t hwsZE0WoSzo9F5XmughfeHfHK+JAPIaaXqFxVNmsR3bwfpf9jitQs/kzDKykh4cEo3hF hYaDS2HkfXAAfuq9VryRs25UGMXACc+HEoSIozO1ZKf9t/QnNUVEFA9Blv4AqgdY1t25 UIkHEP50dC7afypVWqp1fU4EH+Oeel6pPnv3DlLhCjTkiqeGXSLnOKREP4TqimNc+6IM jFAe1MBhpJW05xUK1gaX0zX7oG4Ta0qp+CEmv9U1YlMW9oHA7FMlH23gtvgRYnaUh2pq vKAA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722492837; x=1723097637; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cZB0CSSKP7vKOy+3pwEVaiFc3nb6WEPjBuqxABKIpgI=; b=m4VTROotavASzJUJoMUK94h/ULINTI2yAJgtovuOtDDma0b7yzBeeZPlzVXfZ+qK0k fKDhWIvH7iii1bcuMPUIhv04xMg7XGNZGiKak12wEnPtv/s9MF112wSqJt4iGeYuyVOw B9/7qm5iglpAlVpx7DWOc6eC5g4XLhA4N9qC5UUybc4O6H2ObvScTY+L3ZUB+oerDbSb EpK5+cuXkoO4+h6vp1mTDiTRFjnapg6xPnZbY8sUe7e/V+qHsF0TT1uYzLH6a3KjUig0 ukfMfuKpUEqfR9122Zefdn3YOKSkP2kAHpLPkUVfUP2G4FRdSbPdigcCaZLTlZWF8uIi 4eEA== X-Forwarded-Encrypted: i=1; AJvYcCVV0690kTQkJjq62flpopiPX3QD8HZwIu73Tvtc3/T5iyCEi+qXtxCGLgAb45dUYaWCaBQMB9soVlM=@vger.kernel.org, AJvYcCWFjcw8Y+G1felDH4MRJE0/NrxBWN/1fVUD+jGcZT1195vWuPFlripcqkHc5fWSC1ku/QOyXLJBwmahKg==@vger.kernel.org, AJvYcCWzgxi0pDtUC8lhAw8dHKLSi9haBvA5xRWP8GXv4afI+Wo0+CaDNF64O6NZTCi8jRSE/KQ2J0pu+wC/Wx3y@vger.kernel.org X-Gm-Message-State: AOJu0Yyrywe7OP1xPvzsEUVyX5jbNTi5AO1breJAZ+crHfn/L2KWRA6U hYJCf2W1UGg3MMI3+pkX0ZwKMWytnetPeuuKFBN5+J7XMqXg9TzPmF38s9Db X-Google-Smtp-Source: AGHT+IEDx1lFFvhyLYrfDWOf/SFm9wlq+0bhXem0FcY/UH1bEa05NtFSrSKuMhziSZBt3G1nrSYMEQ== X-Received: by 2002:adf:e7cc:0:b0:368:3f56:b24a with SMTP id ffacd0b85a97d-36baacd2ec4mr945016f8f.15.1722492837171; Wed, 31 Jul 2024 23:13:57 -0700 (PDT) Received: from [127.0.1.1] ([213.208.157.67]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36b367c032bsm18696455f8f.12.2024.07.31.23.13.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Jul 2024 23:13:56 -0700 (PDT) From: Javier Carrasco Date: Thu, 01 Aug 2024 08:13:50 +0200 Subject: [PATCH 1/4] coresight: cti: use device_* to iterate over device child nodes Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240801-device_child_node_access-v1-1-ddfa21bef6f2@gmail.com> References: <20240801-device_child_node_access-v1-0-ddfa21bef6f2@gmail.com> In-Reply-To: <20240801-device_child_node_access-v1-0-ddfa21bef6f2@gmail.com> To: Suzuki K Poulose , Mike Leach , James Clark , Alexander Shishkin , Michael Hennerich , Lars-Peter Clausen , Jonathan Cameron , Anand Ashok Dumbre , Michal Simek , Sakari Ailus , Pavel Machek , Lee Jones Cc: coresight@lists.linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, linux-leds@vger.kernel.org, Javier Carrasco X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=ed25519-sha256; t=1722492833; l=1565; i=javier.carrasco.cruz@gmail.com; s=20240312; h=from:subject:message-id; bh=QFolg12C6V7SfGr1X/Q07nrFu7zCcR/xL99lde/5xoQ=; b=o1NXng6xwZU2bsAiSqsuCOR2/JS3PHQwTAD/8n1zoxZLZQalnqVR3k0a7inWk8yVvTao6fOkF Ftyxo1QzuLrBzMoP0hIJSns2cTyVWLJ3s25EZVaOxbH6HTl1dTm64K8 X-Developer-Key: i=javier.carrasco.cruz@gmail.com; a=ed25519; pk=lzSIvIzMz0JhJrzLXI0HAdPwsNPSSmEn6RbS+PTS9aQ= Drop the manual access to the fwnode of the device to iterate over its child nodes. `device_for_each_child_node` macro provides direct access to the child nodes, and given that they are only required within the loop, the scoped variant of the macro can be used. Use the `device_for_each_child_node_scoped` macro to iterate over the direct child nodes of the device. Signed-off-by: Javier Carrasco --- drivers/hwtracing/coresight/coresight-cti-platform.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c index ccef04f27f12..d0ae10bf6128 100644 --- a/drivers/hwtracing/coresight/coresight-cti-platform.c +++ b/drivers/hwtracing/coresight/coresight-cti-platform.c @@ -416,20 +416,16 @@ static int cti_plat_create_impdef_connections(struct device *dev, struct cti_drvdata *drvdata) { int rc = 0; - struct fwnode_handle *fwnode = dev_fwnode(dev); - struct fwnode_handle *child = NULL; - if (IS_ERR_OR_NULL(fwnode)) + if (IS_ERR_OR_NULL(dev_fwnode(dev))) return -EINVAL; - fwnode_for_each_child_node(fwnode, child) { + device_for_each_child_node_scoped(dev, child) { if (cti_plat_node_name_eq(child, CTI_DT_CONNS)) - rc = cti_plat_create_connection(dev, drvdata, - child); + rc = cti_plat_create_connection(dev, drvdata, child); if (rc != 0) break; } - fwnode_handle_put(child); return rc; }