linux-kernel - [PATCH v4 03/10] cpufreq: intel_pstate: Use scope-based cleanup helper

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Message-Id: <20250903131733.57637-4-zhangzihuan@kylinos.cn>
Date: Wed,  3 Sep 2025 21:17:26 +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>,
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	Zihuan Zhang <zhangzihuan@...inos.cn>
Subject: [PATCH v4 03/10] cpufreq: intel_pstate: 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/cpufreq/intel_pstate.c | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index f366d35c5840..925efb1e65be 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -1209,6 +1209,17 @@ static bool hybrid_clear_max_perf_cpu(void)
 	return ret;
 }
 
+static struct freq_qos_request *intel_pstate_cpufreq_get_req(int cpu)
+{
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) =
+		cpufreq_cpu_get(cpu);
+
+	if (!policy)
+		return NULL;
+
+	return policy->driver_data;
+}
+
 static void __intel_pstate_get_hwp_cap(struct cpudata *cpu)
 {
 	u64 cap;
@@ -1698,19 +1709,13 @@ static ssize_t store_no_turbo(struct kobject *a, struct kobj_attribute *b,
 static void update_qos_request(enum freq_qos_req_type type)
 {
 	struct freq_qos_request *req;
-	struct cpufreq_policy *policy;
 	int i;
 
 	for_each_possible_cpu(i) {
 		struct cpudata *cpu = all_cpu_data[i];
 		unsigned int freq, perf_pct;
 
-		policy = cpufreq_cpu_get(i);
-		if (!policy)
-			continue;
-
-		req = policy->driver_data;
-		cpufreq_cpu_put(policy);
+		req = intel_pstate_cpufreq_get_req(i);
 
 		if (!req)
 			continue;
-- 
2.25.1