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From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Zhang Rui <rui.zhang@intel.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Amit Kucheria <amitk@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Orson Zhai <orsonzhai@gmail.com>,
	Baolin Wang <baolin.wang7@gmail.com>,
	Chunyan Zhang <zhang.lyra@gmail.com>,
	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Subject: [PATCH 1/2] thermal: imx_sc: add missing of_node_put for loop iteration
Date: Sun, 25 Apr 2021 19:48:30 +0200	[thread overview]
Message-ID: <20210425174831.164332-1-krzysztof.kozlowski@canonical.com> (raw)

Early exits from for_each_available_child_of_node() should decrement the
node reference counter.  Reported by Coccinelle:

  drivers/thermal/imx_sc_thermal.c:93:1-33: WARNING:
    Function "for_each_available_child_of_node" should have of_node_put() before return around line 97.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/thermal/imx_sc_thermal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
index b01d28eca7ee..8d76dbfde6a9 100644
--- a/drivers/thermal/imx_sc_thermal.c
+++ b/drivers/thermal/imx_sc_thermal.c
@@ -93,6 +93,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 	for_each_available_child_of_node(np, child) {
 		sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
 		if (!sensor) {
+			of_node_put(child);
 			of_node_put(sensor_np);
 			return -ENOMEM;
 		}
@@ -104,6 +105,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"failed to get valid sensor resource id: %d\n",
 				ret);
+			of_node_put(child);
 			break;
 		}
 
@@ -114,6 +116,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 		if (IS_ERR(sensor->tzd)) {
 			dev_err(&pdev->dev, "failed to register thermal zone\n");
 			ret = PTR_ERR(sensor->tzd);
+			of_node_put(child);
 			break;
 		}
 
-- 
2.25.1


WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
To: Zhang Rui <rui.zhang@intel.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Amit Kucheria <amitk@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	NXP Linux Team <linux-imx@nxp.com>,
	Orson Zhai <orsonzhai@gmail.com>,
	Baolin Wang <baolin.wang7@gmail.com>,
	Chunyan Zhang <zhang.lyra@gmail.com>,
	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Subject: [PATCH 1/2] thermal: imx_sc: add missing of_node_put for loop iteration
Date: Sun, 25 Apr 2021 19:48:30 +0200	[thread overview]
Message-ID: <20210425174831.164332-1-krzysztof.kozlowski@canonical.com> (raw)

Early exits from for_each_available_child_of_node() should decrement the
node reference counter.  Reported by Coccinelle:

  drivers/thermal/imx_sc_thermal.c:93:1-33: WARNING:
    Function "for_each_available_child_of_node" should have of_node_put() before return around line 97.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 drivers/thermal/imx_sc_thermal.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c
index b01d28eca7ee..8d76dbfde6a9 100644
--- a/drivers/thermal/imx_sc_thermal.c
+++ b/drivers/thermal/imx_sc_thermal.c
@@ -93,6 +93,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 	for_each_available_child_of_node(np, child) {
 		sensor = devm_kzalloc(&pdev->dev, sizeof(*sensor), GFP_KERNEL);
 		if (!sensor) {
+			of_node_put(child);
 			of_node_put(sensor_np);
 			return -ENOMEM;
 		}
@@ -104,6 +105,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 			dev_err(&pdev->dev,
 				"failed to get valid sensor resource id: %d\n",
 				ret);
+			of_node_put(child);
 			break;
 		}
 
@@ -114,6 +116,7 @@ static int imx_sc_thermal_probe(struct platform_device *pdev)
 		if (IS_ERR(sensor->tzd)) {
 			dev_err(&pdev->dev, "failed to register thermal zone\n");
 			ret = PTR_ERR(sensor->tzd);
+			of_node_put(child);
 			break;
 		}
 
-- 
2.25.1


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             reply	other threads:[~2021-04-25 17:48 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-25 17:48 Krzysztof Kozlowski [this message]
2021-04-25 17:48 ` [PATCH 1/2] thermal: imx_sc: add missing of_node_put for loop iteration Krzysztof Kozlowski
2021-04-25 17:48 ` [PATCH 2/2] thermal: sprd: " Krzysztof Kozlowski
2021-04-25 17:48   ` Krzysztof Kozlowski
2021-04-26  8:07   ` Chunyan Zhang
2021-04-26  8:07     ` Chunyan Zhang
2021-04-27  8:55 ` [PATCH 1/2] thermal: imx_sc: " Jacky Bai
2021-04-27  8:55   ` Jacky Bai

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