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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Obtain the device node reference with scoped/cleanup.h and use scoped for_each_child_of_node_scoped() to reduce error handling and make the code a bit simpler. Signed-off-by: Krzysztof Kozlowski Acked-by: Matti Vaittinen --- drivers/regulator/bd718x7-regulator.c | 19 ++++++------------- 1 file changed, 6 insertions(+), 13 deletions(-) diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd71= 8x7-regulator.c index c3fb05dce40c..1bb048de3ecd 100644 --- a/drivers/regulator/bd718x7-regulator.c +++ b/drivers/regulator/bd718x7-regulator.c @@ -2,6 +2,7 @@ // Copyright (C) 2018 ROHM Semiconductors // bd71837-regulator.c ROHM BD71837MWV/BD71847MWV regulator driver =20 +#include #include #include #include @@ -1635,18 +1636,17 @@ static int get_special_regulators(struct device *de= v, unsigned int num_reg_data, int *info) { int ret; - struct device_node *np; - struct device_node *nproot =3D dev->of_node; int uv; =20 *info =3D 0; =20 - nproot =3D of_get_child_by_name(nproot, "regulators"); + struct device_node *nproot __free(device_node) =3D of_get_child_by_name(d= ev->of_node, + "regulators"); if (!nproot) { dev_err(dev, "failed to find regulators node\n"); return -ENODEV; } - for_each_child_of_node(nproot, np) { + for_each_child_of_node_scoped(nproot, np) { if (of_property_read_bool(np, "rohm,no-regulator-enable-control")) mark_hw_controlled(dev, np, reg_data, num_reg_data, info); @@ -1656,22 +1656,15 @@ static int get_special_regulators(struct device *de= v, if (ret =3D=3D -EINVAL) continue; else - goto err_out; + return ret; } =20 ret =3D setup_feedback_loop(dev, np, reg_data, num_reg_data, uv); if (ret) - goto err_out; + return ret; } =20 - of_node_put(nproot); return 0; - -err_out: - of_node_put(np); - of_node_put(nproot); - - return ret; } =20 static int bd718xx_probe(struct platform_device *pdev) --=20 2.43.0 From nobody Mon Feb 9 17:39:29 2026 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (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 D82971B3F36 for ; Wed, 14 Aug 2024 15:04:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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Wed, 14 Aug 2024 08:04:20 -0700 (PDT) Received: from [127.0.1.1] ([178.197.215.209]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-429ded7cfbasm22313425e9.45.2024.08.14.08.04.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 08:04:19 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 17:04:06 +0200 Subject: [PATCH 2/7] regulator: bd96801: Use scoped device node handling to simplify error paths Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240814-cleanup-h-of-node-put-regulator-v1-2-87151088b883@linaro.org> References: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> In-Reply-To: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> To: Matti Vaittinen , Liam Girdwood , Mark Brown , Krzysztof Kozlowski , Sudeep Holla , Cristian Marussi Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Obtain the device node reference with scoped/cleanup.h and use scoped for_each_child_of_node_scoped() to reduce error handling and make the code a bit simpler. Add also brackets {} over outer for loop for code readability. Signed-off-by: Krzysztof Kozlowski Acked-by: Matti Vaittinen --- drivers/regulator/bd96801-regulator.c | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/regulator/bd96801-regulator.c b/drivers/regulator/bd96= 801-regulator.c index ec5b1a6b19e8..9876cc05867e 100644 --- a/drivers/regulator/bd96801-regulator.c +++ b/drivers/regulator/bd96801-regulator.c @@ -34,6 +34,7 @@ * conflict in your downstream driver ;) */ =20 +#include #include #include #include @@ -453,15 +454,14 @@ static int bd96801_walk_regulator_dt(struct device *d= ev, struct regmap *regmap, int num) { int i, ret; - struct device_node *np; - struct device_node *nproot =3D dev->parent->of_node; =20 - nproot =3D of_get_child_by_name(nproot, "regulators"); + struct device_node *nproot __free(device_node) =3D + of_get_child_by_name(dev->parent->of_node, "regulators"); if (!nproot) { dev_err(dev, "failed to find regulators node\n"); return -ENODEV; } - for_each_child_of_node(nproot, np) + for_each_child_of_node_scoped(nproot, np) { for (i =3D 0; i < num; i++) { if (!of_node_name_eq(np, data[i].desc.of_match)) continue; @@ -476,11 +476,9 @@ static int bd96801_walk_regulator_dt(struct device *de= v, struct regmap *regmap, dev_err(dev, "Initializing voltages for %s failed\n", data[i].desc.name); - of_node_put(np); - of_node_put(nproot); - return ret; } + if (of_property_read_bool(np, "rohm,keep-on-stby")) { ret =3D regmap_set_bits(regmap, BD96801_ALWAYS_ON_REG, @@ -489,14 +487,11 @@ static int bd96801_walk_regulator_dt(struct device *d= ev, struct regmap *regmap, dev_err(dev, "failed to set %s on-at-stby\n", data[i].desc.name); - of_node_put(np); - of_node_put(nproot); - return ret; } } } - of_node_put(nproot); + } =20 return 0; } --=20 2.43.0 From nobody Mon Feb 9 17:39:29 2026 Received: from mail-lf1-f46.google.com (mail-lf1-f46.google.com [209.85.167.46]) (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 C3CF71B5801 for ; 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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/regulator/max8997-regulator.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/regulator/max8997-regulator.c b/drivers/regulator/max8= 997-regulator.c index cdbfb4561dd8..e77621b6466c 100644 --- a/drivers/regulator/max8997-regulator.c +++ b/drivers/regulator/max8997-regulator.c @@ -8,6 +8,7 @@ // This driver is based on max8998.c =20 #include +#include #include #include #include @@ -876,7 +877,7 @@ static int max8997_pmic_dt_parse_pdata(struct platform_= device *pdev, struct max8997_platform_data *pdata) { struct max8997_dev *iodev =3D dev_get_drvdata(pdev->dev.parent); - struct device_node *pmic_np, *regulators_np, *reg_np; + struct device_node *pmic_np, *reg_np; struct max8997_regulator_data *rdata; unsigned int i, dvs_voltage_nr =3D 1; =20 @@ -886,7 +887,8 @@ static int max8997_pmic_dt_parse_pdata(struct platform_= device *pdev, return -ENODEV; } =20 - regulators_np =3D of_get_child_by_name(pmic_np, "regulators"); 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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/regulator/s5m8767.c | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/regulator/s5m8767.c b/drivers/regulator/s5m8767.c index bfc0e143bf40..d25cd81e3f36 100644 --- a/drivers/regulator/s5m8767.c +++ b/drivers/regulator/s5m8767.c @@ -3,6 +3,7 @@ // Copyright (c) 2011 Samsung Electronics Co., Ltd // http://www.samsung.com =20 +#include #include #include #include @@ -521,7 +522,7 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_= device *pdev, struct sec_platform_data *pdata) { struct sec_pmic_dev *iodev =3D dev_get_drvdata(pdev->dev.parent); - struct device_node *pmic_np, *regulators_np, *reg_np; + struct device_node *pmic_np, *reg_np; struct sec_regulator_data *rdata; struct sec_opmode_data *rmode; unsigned int i, dvs_voltage_nr =3D 8, ret; @@ -532,7 +533,8 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_= device *pdev, return -ENODEV; } =20 - regulators_np =3D of_get_child_by_name(pmic_np, "regulators"); + struct device_node *regulators_np __free(device_node) =3D of_get_child_by= _name(pmic_np, + "regulators"); if (!regulators_np) { dev_err(iodev->dev, "could not find regulators sub-node\n"); return -EINVAL; @@ -544,18 +546,14 @@ static int s5m8767_pmic_dt_parse_pdata(struct platfor= m_device *pdev, rdata =3D devm_kcalloc(&pdev->dev, pdata->num_regulators, sizeof(*rdata), GFP_KERNEL); - if (!rdata) { - of_node_put(regulators_np); + if (!rdata) return -ENOMEM; - } =20 rmode =3D devm_kcalloc(&pdev->dev, pdata->num_regulators, sizeof(*rmode), GFP_KERNEL); - if (!rmode) { - of_node_put(regulators_np); + if (!rmode) return -ENOMEM; - } =20 pdata->regulators =3D rdata; pdata->opmode =3D rmode; @@ -581,7 +579,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_= device *pdev, rdata->ext_control_gpiod =3D NULL; } else if (IS_ERR(rdata->ext_control_gpiod)) { of_node_put(reg_np); - of_node_put(regulators_np); return PTR_ERR(rdata->ext_control_gpiod); } =20 @@ -603,8 +600,6 @@ static int s5m8767_pmic_dt_parse_pdata(struct platform_= device *pdev, rmode++; 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Wed, 14 Aug 2024 08:04:26 -0700 (PDT) Received: from [127.0.1.1] ([178.197.215.209]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-429ded7cfbasm22313425e9.45.2024.08.14.08.04.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 08:04:26 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 17:04:09 +0200 Subject: [PATCH 5/7] regulator: qcom-rpmh: Simplify with scoped for each OF child loop Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240814-cleanup-h-of-node-put-regulator-v1-5-87151088b883@linaro.org> References: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> In-Reply-To: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> To: Matti Vaittinen , Liam Girdwood , Mark Brown , Krzysztof Kozlowski , Sudeep Holla , Cristian Marussi Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/regulator/qcom-rpmh-regulator.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/regulator/qcom-rpmh-regulator.c b/drivers/regulator/qc= om-rpmh-regulator.c index 80e304711345..6b4cb7ba49c7 100644 --- a/drivers/regulator/qcom-rpmh-regulator.c +++ b/drivers/regulator/qcom-rpmh-regulator.c @@ -1537,7 +1537,6 @@ static int rpmh_regulator_probe(struct platform_devic= e *pdev) { struct device *dev =3D &pdev->dev; const struct rpmh_vreg_init_data *vreg_data; - struct device_node *node; struct rpmh_vreg *vreg; const char *pmic_id; int ret; @@ -1552,19 +1551,15 @@ static int rpmh_regulator_probe(struct platform_dev= ice *pdev) return ret; } =20 - for_each_available_child_of_node(dev->of_node, node) { + for_each_available_child_of_node_scoped(dev->of_node, node) { vreg =3D devm_kzalloc(dev, sizeof(*vreg), GFP_KERNEL); - if (!vreg) { - of_node_put(node); + if (!vreg) return -ENOMEM; - } =20 ret =3D rpmh_regulator_init_vreg(vreg, dev, node, pmic_id, vreg_data); 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Wed, 14 Aug 2024 08:04:28 -0700 (PDT) Received: from [127.0.1.1] ([178.197.215.209]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-429ded7cfbasm22313425e9.45.2024.08.14.08.04.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 08:04:28 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 17:04:10 +0200 Subject: [PATCH 6/7] regulator: qcom-smd: Simplify with scoped for each OF child loop Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240814-cleanup-h-of-node-put-regulator-v1-6-87151088b883@linaro.org> References: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> In-Reply-To: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> To: Matti Vaittinen , Liam Girdwood , Mark Brown , Krzysztof Kozlowski , Sudeep Holla , Cristian Marussi Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/regulator/qcom_smd-regulator.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/regulator/qcom_smd-regulator.c b/drivers/regulator/qco= m_smd-regulator.c index 3b7e06b9f5ce..6761ada0cf7d 100644 --- a/drivers/regulator/qcom_smd-regulator.c +++ b/drivers/regulator/qcom_smd-regulator.c @@ -1435,7 +1435,6 @@ static int rpm_reg_probe(struct platform_device *pdev) { struct device *dev =3D &pdev->dev; const struct rpm_regulator_data *vreg_data; - struct device_node *node; struct qcom_rpm_reg *vreg; struct qcom_smd_rpm *rpm; int ret; @@ -1455,18 +1454,14 @@ static int rpm_reg_probe(struct platform_device *pd= ev) if (!vreg_data) return -ENODEV; =20 - for_each_available_child_of_node(dev->of_node, node) { + for_each_available_child_of_node_scoped(dev->of_node, node) { vreg =3D devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL); - if (!vreg) { - of_node_put(node); + if (!vreg) return -ENOMEM; - } =20 ret =3D rpm_regulator_init_vreg(vreg, dev, node, vreg_data); 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Wed, 14 Aug 2024 08:04:30 -0700 (PDT) Received: from [127.0.1.1] ([178.197.215.209]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-429ded7cfbasm22313425e9.45.2024.08.14.08.04.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Aug 2024 08:04:29 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 14 Aug 2024 17:04:11 +0200 Subject: [PATCH 7/7] regulator: scmi: Simplify with scoped for each OF child loop Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240814-cleanup-h-of-node-put-regulator-v1-7-87151088b883@linaro.org> References: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> In-Reply-To: <20240814-cleanup-h-of-node-put-regulator-v1-0-87151088b883@linaro.org> To: Matti Vaittinen , Liam Girdwood , Mark Brown , Krzysztof Kozlowski , Sudeep Holla , Cristian Marussi Cc: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, arm-scmi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Krzysztof Kozlowski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Signed-off-by: Krzysztof Kozlowski --- drivers/regulator/scmi-regulator.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/regulator/scmi-regulator.c b/drivers/regulator/scmi-re= gulator.c index 29ab217297d6..9df726f10ad1 100644 --- a/drivers/regulator/scmi-regulator.c +++ b/drivers/regulator/scmi-regulator.c @@ -297,7 +297,7 @@ static int process_scmi_regulator_of_node(struct scmi_d= evice *sdev, static int scmi_regulator_probe(struct scmi_device *sdev) { int d, ret, num_doms; - struct device_node *np, *child; + struct device_node *np; const struct scmi_handle *handle =3D sdev->handle; struct scmi_regulator_info *rinfo; struct scmi_protocol_handle *ph; @@ -341,13 +341,11 @@ static int scmi_regulator_probe(struct scmi_device *s= dev) */ of_node_get(handle->dev->of_node); np =3D of_find_node_by_name(handle->dev->of_node, "regulators"); - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { ret =3D process_scmi_regulator_of_node(sdev, ph, child, rinfo); /* abort on any mem issue */ - if (ret =3D=3D -ENOMEM) { - of_node_put(child); + if (ret =3D=3D -ENOMEM) return ret; - } } of_node_put(np); /* --=20 2.43.0