From patchwork Tue Oct 8 09:00:02 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 13826072 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C6E8CFB421 for ; Tue, 8 Oct 2024 09:06:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=adCWIIzBDnCRS+ya+uwdE4DOJNV+C/EsMYDSwCJFffY=; b=B6FPkR1HwIWW4Rib8/6ngf6XHq xVo00VVOWpfjJ317rp+t5WoD7w7474td1/4vCYL1EMdePC4ptpMK2OQGhMUrJPXuhgiR+ZX6lFotB utV+3DpU6vgEmeGGlLGjB5LcRhDcQsubKnVz8/Av1BV0GZS6hfJi6FAfYLdr6QKiCFvOnuMrn+/S3 uxqj+P9rUvDuejhX22Sr9TeUix/FRDqfhiL1KhUp0BtnEHvmhrddV0rI9btNINmbtKZsS3dhfUMlX ecWujkHojkMWSuwajm5BM/RGldhvy1vDpo4XeXCDz/6KN5n85h9OzMSsvr9VXIqZpYUVv0IK/eywm w0asXbfw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1sy6A9-00000005E0n-3EWm; Tue, 08 Oct 2024 09:05:49 +0000 Received: from mail-ed1-x534.google.com ([2a00:1450:4864:20::534]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1sy64t-00000005Bql-1XbP for linux-arm-kernel@lists.infradead.org; Tue, 08 Oct 2024 09:00:24 +0000 Received: by mail-ed1-x534.google.com with SMTP id 4fb4d7f45d1cf-5c87b2f1913so1017783a12.1 for ; Tue, 08 Oct 2024 02:00:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1728378021; x=1728982821; darn=lists.infradead.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=adCWIIzBDnCRS+ya+uwdE4DOJNV+C/EsMYDSwCJFffY=; b=hjZdxQqlkH0HogcLv4HAV+qowgXIkkAhixH0yjxKKq4yaORyDD0r1OVMzoSlcw32q3 8+v5EXPNeUdJrQOMePLMPvhPk/Oqn+Vcrb9P3bOT5pIAGmyL7tO2NTH8DEXyqhmU3yOp TzSsQ4/ZXbbj+dLppMQE36RO8axzVyslvFMxfraRhlA16pASnrOz9ELBXFpK5EYVKbsJ LdiNyr5JQiPtkSraFuV7oTFss+I3HOztOZHUhiAekIaVK6gCcth/dnjOUgY6kVIsMmQ8 6BPT4Ipvt6J1E/7NrZKV6pDucQ2NV/qoUJqZiipHTsrZRnDuqWP0hpnS+UKFDkUPQQgN vBkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1728378021; x=1728982821; 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=adCWIIzBDnCRS+ya+uwdE4DOJNV+C/EsMYDSwCJFffY=; b=McBRTbrEHjWRWmcVWuAtnYy5nhQvXi/3k+fCn1rLZYaZw9TzG/nTIIl4WKjYXElZg7 wTiK8EDa8G2kVMKHL83fZtFe5MuIw6xye6CpCwwptVIEpW80UBUO7ekf9F1TnS+lS/EN Bjn4Uejf16o5TGrQZA+krETZn3EfF9v2qhAwmvphyHXRqi/KKsKgassXDlZ+kjNkqIZT 0Akpx+Ak/Z0xgs03chq613T0X9lL7Ar11xN0GRd3K+Fw7P5keKeKKey2QJcdwM+XghwQ q3z5gkhKNBbxQp7+hLUYZDOvoboUoWFeRfaGFK2ooveJ2msbhjdMJwDt36T9plAGCvuK KT6g== X-Forwarded-Encrypted: i=1; AJvYcCUZDnVgTNp34U7NTr6O2ItUWajxRgTzA1HxwlO2U2/bxXFEYfMrWSgqhZjpfh+2uuPZWUZDOsWe+O+I6no8J5pg@lists.infradead.org X-Gm-Message-State: AOJu0YzYrTmkkYTQ2efdo8VPq5yGG3gDKG9jeMpR1q/hm48bA+RQKd5J a8e7mfDuvlS7jOT5VxXhfYbI7p7BOYhI69SeMV1xQVUB7/VrPHx77kIY4WxYUT8= X-Google-Smtp-Source: AGHT+IFyV5YlbliLB9Sn5wjUH6COxSzrncdb5qLhEV2J0ae0yBBiwgw0xI+8Arc8blW6t7WRxnafRg== X-Received: by 2002:a17:907:9443:b0:a99:482c:b2cf with SMTP id a640c23a62f3a-a99482cbc1emr374351766b.6.1728378021503; Tue, 08 Oct 2024 02:00:21 -0700 (PDT) Received: from [127.0.1.1] ([178.197.211.167]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a994e6e571asm294701166b.85.2024.10.08.02.00.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Oct 2024 02:00:21 -0700 (PDT) From: Krzysztof Kozlowski Date: Tue, 08 Oct 2024 11:00:02 +0200 Subject: [PATCH v3 2/6] thermal: of: Use scoped device node handling to simplify thermal_of_trips_init() MIME-Version: 1.0 Message-Id: <20241008-b4-cleanup-h-of-node-put-thermal-v3-2-825122398f71@linaro.org> References: <20241008-b4-cleanup-h-of-node-put-thermal-v3-0-825122398f71@linaro.org> In-Reply-To: <20241008-b4-cleanup-h-of-node-put-thermal-v3-0-825122398f71@linaro.org> To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Amit Kucheria , Thara Gopinath , Thierry Reding , Jonathan Hunter , Vasily Khoruzhick , Yangtao Li , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, Chen-Yu Tsai , Krzysztof Kozlowski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=1919; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=r5aPI6Cjn0TQVJCWexA1Rya/HBg2dq+HlU8Qr2gItOQ=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBnBPSceSnEJp2lwlWByHAa/bugTQ/6DRWAT9fJb uGRxYnCYsqJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZwT0nAAKCRDBN2bmhouD 17qJD/oDEDMG+qPpZYnaeRaztl0WT4abQ4WaCF2e5zgAu1S4llK2iQRYU0KB6Ddesl0KwXgMASd lmhBMg7VnYj8ZVR1cKExnTlws7HzVniO1HtKucpHlVo/1w9q/4nF5qusN2cj5/1NRIWgPA+U4CM GixsfXrDqjN7X2TaZ1eD9alLmIWjLXzyCiC2Hv4/E87ml31QZI8BM61nDrC23BRD9QnYUqkJMcU +j0H+99j9zNVohXBZrjDt/Nv6e6R1/tw/vgZgsomtaoO1Q6K2XYkl03q0ceZQS4jjqEq0Gmi0xV v0u2ZQlDTkKdB0oCeTuBwOqRsI62HW2J8tSnS6be7Otj2SDBNKEMT+D5O/6Dn3x1U2U81G9kZ6T 6EQQ8wQLExZprKqb89dkvyNw1gbBo5hKIaM+2PSXbxat3Jv+WpGq5mxrC2LfhzmFJmBqqjguyB/ k5+i9d46I76NJz63ak0t2QV8I+zn+aC10/+1CPDRO3V1laC+Zj3uoelmnA3gvgPYv+oFFOR1VyN q27M4IGIzUPAAl2t3IKzEqO9qFpl/Ba7gIHqUVDEWXzxbhd2ylR+H1sPz57KliloCQZmRJR+Q0W 1XqAaqaIAiFBXYKdSz/CZziyTsQTwHfi6k22ruGEkOWSbFJKBuyWMiQkDaWkCSH+YgwtHlvT2gw YynUKo3nC3wtIng== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241008_020023_488273_C962B11E X-CRM114-Status: GOOD ( 13.83 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Reviewed-by: Chen-Yu Tsai Signed-off-by: Krzysztof Kozlowski Reviewed-by: Jonathan Cameron --- Changes in v2: 1. Drop left-over of_node_put in regular exit path (Chen-Yu) --- drivers/thermal/thermal_of.c | 16 ++++------------ 1 file changed, 4 insertions(+), 12 deletions(-) diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index f0ffc0e335ba9406f4fd858d6c561f9d23f4b842..d7d6f62caa13d545e5f7fae4c8ac1e737bf4c4b1 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -96,10 +96,9 @@ static int thermal_of_populate_trip(struct device_node *np, static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *ntrips) { struct thermal_trip *tt; - struct device_node *trips; int ret, count; - trips = of_get_child_by_name(np, "trips"); + struct device_node *trips __free(device_node) = of_get_child_by_name(np, "trips"); if (!trips) { pr_err("Failed to find 'trips' node\n"); return ERR_PTR(-EINVAL); @@ -108,15 +107,12 @@ static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *n count = of_get_child_count(trips); if (!count) { pr_err("No trip point defined\n"); - ret = -EINVAL; - goto out_of_node_put; + return ERR_PTR(-EINVAL); } tt = kzalloc(sizeof(*tt) * count, GFP_KERNEL); - if (!tt) { - ret = -ENOMEM; - goto out_of_node_put; - } + if (!tt) + return ERR_PTR(-ENOMEM); *ntrips = count; @@ -127,15 +123,11 @@ static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *n goto out_kfree; } - of_node_put(trips); - return tt; out_kfree: kfree(tt); *ntrips = 0; -out_of_node_put: - of_node_put(trips); return ERR_PTR(ret); }