linux-kernel - [PATCH v3 10/12] thermal: imx: Use scope-based cleanup helper

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Message-Id: <20250901085748.36795-11-zhangzihuan@kylinos.cn>
Date: Mon,  1 Sep 2025 16:57:46 +0800
From: Zihuan Zhang <zhangzihuan@...inos.cn>
To: "Rafael J . wysocki" <rafael@...nel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
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Cc: Ben Horgan <ben.horgan@....com>,
	zhenglifeng <zhenglifeng1@...wei.com>,
	Zhang Rui <rui.zhang@...el.com>,
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	Prasanna Kumar T S M <ptsm@...ux.microsoft.com>,
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	linux-pm@...r.kernel.org,
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	linux-kernel@...r.kernel.org,
	Zihuan Zhang <zhangzihuan@...inos.cn>
Subject: [PATCH v3 10/12] thermal: imx: Use scope-based cleanup helper

Replace the manual cpufreq_cpu_put() with __free(put_cpufreq_policy)
annotation for policy references. This reduces the risk of reference
counting mistakes and aligns the code with the latest kernel style.

No functional change intended.

Signed-off-by: Zihuan Zhang <zhangzihuan@...inos.cn>
---
 drivers/thermal/imx_thermal.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 38c993d1bcb3..8d5fd5ca39da 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -201,7 +201,6 @@ static struct thermal_soc_data thermal_imx7d_data = {
 
 struct imx_thermal_data {
 	struct device *dev;
-	struct cpufreq_policy *policy;
 	struct thermal_zone_device *tz;
 	struct thermal_cooling_device *cdev;
 	struct regmap *tempmon;
@@ -541,22 +540,20 @@ MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
 static int imx_thermal_register_legacy_cooling(struct imx_thermal_data *data)
 {
 	struct device_node *np;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(0);
 	int ret = 0;
 
-	data->policy = cpufreq_cpu_get(0);
-	if (!data->policy) {
+	if (!policy) {
 		pr_debug("%s: CPUFreq policy not found\n", __func__);
 		return -EPROBE_DEFER;
 	}
 
-	np = of_get_cpu_node(data->policy->cpu, NULL);
+	np = of_get_cpu_node(policy->cpu, NULL);
 
 	if (!np || !of_property_present(np, "#cooling-cells")) {
 		data->cdev = cpufreq_cooling_register(data->policy);
-		if (IS_ERR(data->cdev)) {
+		if (IS_ERR(data->cdev))
 			ret = PTR_ERR(data->cdev);
-			cpufreq_cpu_put(data->policy);
-		}
 	}
 
 	of_node_put(np);
@@ -567,7 +564,6 @@ static int imx_thermal_register_legacy_cooling(struct imx_thermal_data *data)
 static void imx_thermal_unregister_legacy_cooling(struct imx_thermal_data *data)
 {
 	cpufreq_cooling_unregister(data->cdev);
-	cpufreq_cpu_put(data->policy);
 }
 
 #else
-- 
2.25.1