linux-kernel - [PATCH v2 09/18] cpufreq: powernv: Use __free(put_cpufreq

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Message-Id: <20250827023202.10310-10-zhangzihuan@kylinos.cn>
Date: Wed, 27 Aug 2025 10:31:53 +0800
From: Zihuan Zhang <zhangzihuan@...inos.cn>
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	Zihuan Zhang <zhangzihuan@...inos.cn>
Subject: [PATCH v2 09/18] cpufreq: powernv: Use __free(put_cpufreq_policy) for policy reference

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/powernv-cpufreq.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 7d9a5f656de8..782cf5a482c0 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -892,15 +892,15 @@ static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb,
 				unsigned long action, void *unused)
 {
 	int cpu;
-	struct cpufreq_policy *cpu_policy;
 
 	rebooting = true;
 	for_each_online_cpu(cpu) {
+		struct cpufreq_policy *cpu_policy __free(put_cpufreq_policy);
+
 		cpu_policy = cpufreq_cpu_get(cpu);
 		if (!cpu_policy)
 			continue;
 		powernv_cpufreq_target_index(cpu_policy, get_nominal_index());
-		cpufreq_cpu_put(cpu_policy);
 	}
 
 	return NOTIFY_DONE;
@@ -913,7 +913,6 @@ static struct notifier_block powernv_cpufreq_reboot_nb = {
 static void powernv_cpufreq_work_fn(struct work_struct *work)
 {
 	struct chip *chip = container_of(work, struct chip, throttle);
-	struct cpufreq_policy *policy;
 	unsigned int cpu;
 	cpumask_t mask;
 
@@ -928,6 +927,7 @@ static void powernv_cpufreq_work_fn(struct work_struct *work)
 	chip->restore = false;
 	for_each_cpu(cpu, &mask) {
 		int index;
+		struct cpufreq_policy *policy __free(put_cpufreq_policy);
 
 		policy = cpufreq_cpu_get(cpu);
 		if (!policy)
@@ -935,7 +935,6 @@ static void powernv_cpufreq_work_fn(struct work_struct *work)
 		index = cpufreq_table_find_index_c(policy, policy->cur, false);
 		powernv_cpufreq_target_index(policy, index);
 		cpumask_andnot(&mask, &mask, policy->cpus);
-		cpufreq_cpu_put(policy);
 	}
 out:
 	cpus_read_unlock();
-- 
2.25.1