From patchwork Fri Aug 23 12:51:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 13775115 Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) (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 1C484188A1E for ; Fri, 23 Aug 2024 12:51:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724417509; cv=none; b=Ra8v5T6W9AuQ9HnbUjftiymMLDh6yx0RsaNeSkqSG7QvVx0+XpKE7TluiWZellrExRhi8drz9u8hiDOEpeLmfgdPeGEnh3eS397kq9TClqe5WMqYqtKi514UgZ4sbHiE/kOfL/LoPssdWJkXLYecXrbAT11eRMAvkDOuVJV7KD0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724417509; c=relaxed/simple; bh=XWmH+Hl1yGiIFL5fYsxLdEp7Bwy4xbJyw8YwEuJJ1k0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OnPS473gpmR62x3/nAouW9cvZlBZ/kJIhGIwaSYyZmTn+JTyU0nLVPevsFHcy9wsqJKpX0v271gg5TA7gKJ9vGAFQgEA3myrj2w+yAsbflp6Vuh5Y9f4Sg8l4c2UH/w2VSybzIfa1rPWrJ+HL2QgOlTczdu+P030Y/m4uLM/PPk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org; spf=pass smtp.mailfrom=linaro.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b=x4qi6NCJ; arc=none smtp.client-ip=209.85.208.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linaro.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="x4qi6NCJ" Received: by mail-lj1-f179.google.com with SMTP id 38308e7fff4ca-2f4020d2c65so3930621fa.1 for ; Fri, 23 Aug 2024 05:51:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1724417503; x=1725022303; 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=FrO9VIOVY0Ri5IaSOP2cHACmrrm/g6eQHTHu7wmBZg8=; b=x4qi6NCJSX+XEAbU9ZLxLI114O0P2vRFK2pHTLV5wjzDrprrTqFa5SdGSfKYFWyPOF C7xiwSx6Nfn7BVcsfsi4DnrzM71m1j2pc1jH1yLOoIMN+A1aLq35i/3LdE+3jLQzTbGG uA2Gjs8swZFsVVxmFsvRKF4Ewkfyv72FgXKyGQhmm4vJbQJa+t9LP6TsaI8v25dVJDUQ N9+qNYxASVh/SBmpnEvPMcuVmvVqwSo/7KcXvUNgFB2vhL7rGqn5wVh7IQaoYt40zo0k 2cbtWkXnkX6Jjw9q0aaXTymAcHKIQr12CXkIQ7cF9E/PxDbax4g68HG/N0rwNYMJ53bL ce8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724417503; x=1725022303; 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=FrO9VIOVY0Ri5IaSOP2cHACmrrm/g6eQHTHu7wmBZg8=; b=hcbkcvKg3rQtPCd10/U3csQ3padj16brWyhHvcNVWSbid/jqGqfS2L5AnOLV7KivmG 9NxwWJFHE3eTkALnKO7pjgBJnTJkYJ5JzwnRXUImYdQU3I/Yv2xVfzIPhlLUzVqzHvrc WDMskdpRXdmPw+qtAAwD3iOnpsSabGJ79K0RWXwOHwQQIUGClZSN/AQnp3DQbWz7aVNN EuqjNCYHDyzpS1DQ/zrBc3Kw85iTdXITCioQ3sOhPiNKxaHRZSX2TzgOB4h/o+x1Gzbo YP8ueKfKvW0xwAFdYZZU08Ew4LTOWdtSXN87LDS1hHqMNxElCjo39rqjI4IZwq5Ct0C9 +ZZQ== X-Forwarded-Encrypted: i=1; AJvYcCVZHQpYKswNpnZMZrzuZ/80qwo+u02wE6nOooafYgkwGnKN/Jff0DWtc2ZnR/Q6yl5k/LALBJSy9s5185IR@vger.kernel.org X-Gm-Message-State: AOJu0Yz9MmWEMlNm8XNzvQcjuOLbUcOAshTXPhPqdJbL2UBprS4LtECG 5ypktQVhyKFp41haxkrD2eZbqrbtHGxzWX9uT3BS+f7QrXXHUqa8epi7L/4xT6o= X-Google-Smtp-Source: AGHT+IHQt6XsQjCUfkUrlag0GNPSCDr9z/SiyDUFBx8p2vfO9ppalFsmm1bqmGaVYaUEm16X8IjYbw== X-Received: by 2002:a05:651c:2204:b0:2ef:17df:6314 with SMTP id 38308e7fff4ca-2f4f4932c8dmr7795291fa.4.1724417503135; Fri, 23 Aug 2024 05:51:43 -0700 (PDT) Received: from [127.0.1.1] ([178.197.222.82]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-a868f4f384bsm255931666b.192.2024.08.23.05.51.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Aug 2024 05:51:42 -0700 (PDT) From: Krzysztof Kozlowski Date: Fri, 23 Aug 2024 14:51:13 +0200 Subject: [PATCH 09/10] pmdomain: renesas: rcar-gen4-sysc: Use scoped device node handling to simplify error paths Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240823-cleanup-h-guard-pm-domain-v1-9-8320722eaf39@linaro.org> References: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> In-Reply-To: <20240823-cleanup-h-guard-pm-domain-v1-0-8320722eaf39@linaro.org> To: Ulf Hansson , Heiko Stuebner , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Bjorn Andersson , Konrad Dybcio , Geert Uytterhoeven , Magnus Damm Cc: linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-msm@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2725; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=XWmH+Hl1yGiIFL5fYsxLdEp7Bwy4xbJyw8YwEuJJ1k0=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmyIXMuhF/r6XYZvbssPimAH7xSy/VPxtyP2RAn SKx6v/2vH+JAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZsiFzAAKCRDBN2bmhouD 1xx0D/wOZ/Gin9mdDLVFXUWB37LsDCwOjzZhR9qfsq0n6W6JYFtvECA3bgQpv4nW/mYAB85dr+j ro8zgDq5YXul9FfRGG0ATZvZT2gcCHL/oAnDreUc8vfZLsSlJ1aX84TFJomiW+mQ3XXwCRmsZHB 1T0CJt70K1YB2eltp8jp0dig71yi2HdMF6UYhbDo/gYVGtlFtNiYB67Kwdw0UOeW9YzcmeFi6YK Tz8GvX3QEooih+bxbIDhHX8Z1IKftzyzty+quNuwmYUOyDi4eSZe2mp4j0/FoaW5MlY31kxW0rp 3S9JXPQfyAUVLKdG/0FQQEI8YLTvcupNPFisaS4Bby2Sn1U517UKrVFAFpZ9TDPTzWPFeQ7DUUe N8kAyUNMyWN+WNJx+ECpszWWFmk9bCNiZvIJN6pNvCy9N7GzJqATm4RWSxqwOZxL8H0sDTvlx5c SQz+eEInbU7p0zcJom64jgD1i2plMUsbuoINKbgMq1y+QdsEBmRi6astV/l1pDUIofIKm/A6u3Y N6sQEDEDv1e7tknn9+k5mh99Qk2SjG6+f2mhpMyv/XuC4yKpoHnihKWMMjM5xv97lj2iR1d0N26 3YLDkz0E6IEUTDsbNmc1w4Q/VgIsWFghm2U0TXGnTuF57hccO1BnQ1aFdYOM38AO3rCHpOxw96L jO9lsFhJ2yrQ1lw== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Obtain the device node reference with scoped/cleanup.h to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/pmdomain/renesas/rcar-gen4-sysc.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/drivers/pmdomain/renesas/rcar-gen4-sysc.c b/drivers/pmdomain/renesas/rcar-gen4-sysc.c index 66409cff2083..4ca85dbdedc2 100644 --- a/drivers/pmdomain/renesas/rcar-gen4-sysc.c +++ b/drivers/pmdomain/renesas/rcar-gen4-sysc.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -303,12 +304,12 @@ static int __init rcar_gen4_sysc_pd_init(void) const struct rcar_gen4_sysc_info *info; const struct of_device_id *match; struct rcar_gen4_pm_domains *domains; - struct device_node *np; void __iomem *base; unsigned int i; int error; - np = of_find_matching_node_and_match(NULL, rcar_gen4_sysc_matches, &match); + struct device_node *np __free(device_node) = + of_find_matching_node_and_match(NULL, rcar_gen4_sysc_matches, &match); if (!np) return -ENODEV; @@ -317,17 +318,14 @@ static int __init rcar_gen4_sysc_pd_init(void) base = of_iomap(np, 0); if (!base) { pr_warn("%pOF: Cannot map regs\n", np); - error = -ENOMEM; - goto out_put; + return -ENOMEM; } rcar_gen4_sysc_base = base; domains = kzalloc(sizeof(*domains), GFP_KERNEL); - if (!domains) { - error = -ENOMEM; - goto out_put; - } + if (!domains) + return -ENOMEM; domains->onecell_data.domains = domains->domains; domains->onecell_data.num_domains = ARRAY_SIZE(domains->domains); @@ -345,10 +343,8 @@ static int __init rcar_gen4_sysc_pd_init(void) n = strlen(area->name) + 1; pd = kzalloc(sizeof(*pd) + n, GFP_KERNEL); - if (!pd) { - error = -ENOMEM; - goto out_put; - } + if (!pd) + return -ENOMEM; memcpy(pd->name, area->name, n); pd->genpd.name = pd->name; @@ -357,7 +353,7 @@ static int __init rcar_gen4_sysc_pd_init(void) error = rcar_gen4_sysc_pd_setup(pd); if (error) - goto out_put; + return error; domains->domains[area->pdr] = &pd->genpd; @@ -369,14 +365,12 @@ static int __init rcar_gen4_sysc_pd_init(void) if (error) { pr_warn("Failed to add PM subdomain %s to parent %u\n", area->name, area->parent); - goto out_put; + return error; } } error = of_genpd_add_provider_onecell(np, &domains->onecell_data); -out_put: - of_node_put(np); return error; } early_initcall(rcar_gen4_sysc_pd_init);