This patch replaces all remaining uses of cpufreq_cpu_get() with
the __free(cpufreq_cpu_put) annotation.

Motivation:
- Ensures automatic cleanup of policy references when they go out of scope,
  reducing the risk of forgetting to call cpufreq_cpu_put() on early return
  or error paths.
- Brings the code in line with the latest kernel coding style and best
  practices for managing reference-counted objects.
- No functional changes are introduced; behavior remains the same,
  but reference counting is now safer and easier to maintain.

Signed-off-by: Zihuan Zhang <redacted>
---
 arch/arm64/kernel/topology.c                  |  9 +++----
 arch/x86/kvm/x86.c                            | 10 ++++----
 drivers/acpi/processor_thermal.c              | 13 ++++------
 drivers/cpufreq/brcmstb-avs-cpufreq.c         |  4 +---
 drivers/cpufreq/cppc_cpufreq.c                |  4 +---
 drivers/cpufreq/intel_pstate.c                |  3 +--
 drivers/cpufreq/longhaul.c                    |  3 +--
 drivers/cpufreq/mediatek-cpufreq.c            |  6 ++---
 drivers/cpufreq/powernv-cpufreq.c             |  6 ++---
 drivers/cpufreq/s5pv210-cpufreq.c             |  3 +--
 drivers/cpufreq/tegra186-cpufreq.c            |  3 +--
 drivers/devfreq/governor_passive.c            | 19 ++++-----------
 drivers/gpu/drm/i915/gt/intel_llc.c           |  3 +--
 drivers/macintosh/windfarm_cpufreq_clamp.c    |  4 +---
 drivers/powercap/dtpm_cpu.c                   | 24 ++++++-------------
 drivers/thermal/imx_thermal.c                 |  7 ++----
 .../ti-soc-thermal/ti-thermal-common.c        |  5 +---
 kernel/power/energy_model.c                   |  7 ++----
 18 files changed, 40 insertions(+), 93 deletions(-)

diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index 5d07ee85bdae..e3cb6d54f35b 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c

@@ -307,17 +307,16 @@ int arch_freq_get_on_cpu(int cpu)
 		 */
 		if (!housekeeping_cpu(cpu, HK_TYPE_TICK) ||
 		    time_is_before_jiffies(last_update + msecs_to_jiffies(AMU_SAMPLE_EXP_MS))) {
-			struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+			struct cpufreq_policy *policy __free(put_cpufreq_policy);
 			int ref_cpu;
 
+			policy = cpufreq_cpu_get(cpu);
 			if (!policy)
 				return -EINVAL;
 
 			if (!cpumask_intersects(policy->related_cpus,
-						housekeeping_cpumask(HK_TYPE_TICK))) {
-				cpufreq_cpu_put(policy);
+						housekeeping_cpumask(HK_TYPE_TICK)))
 				return -EOPNOTSUPP;
-			}
 
 			for_each_cpu_wrap(ref_cpu, policy->cpus, cpu + 1) {
 				if (ref_cpu == start_cpu) {

@@ -329,8 +328,6 @@ int arch_freq_get_on_cpu(int cpu)
 					break;
 			}
 
-			cpufreq_cpu_put(policy);
-
 			if (ref_cpu >= nr_cpu_ids)
 				/* No alternative to pull info from */
 				return -EAGAIN;

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a1c49bc681c4..2a825f4ec701 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c

@@ -9492,16 +9492,14 @@ static void kvm_timer_init(void)
 		max_tsc_khz = tsc_khz;
 
 		if (IS_ENABLED(CONFIG_CPU_FREQ)) {
-			struct cpufreq_policy *policy;
+			struct cpufreq_policy *policy __free(put_cpufreq_policy);
 			int cpu;
 
 			cpu = get_cpu();
 			policy = cpufreq_cpu_get(cpu);
-			if (policy) {
-				if (policy->cpuinfo.max_freq)
-					max_tsc_khz = policy->cpuinfo.max_freq;
-				cpufreq_cpu_put(policy);
-			}
+			if (policy && policy->cpuinfo.max_freq)
+				max_tsc_khz = policy->cpuinfo.max_freq;
+
 			put_cpu();
 		}
 		cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block,

diff --git a/drivers/acpi/processor_thermal.c b/drivers/acpi/processor_thermal.c
index 1219adb11ab9..8367a81c4842 100644
--- a/drivers/acpi/processor_thermal.c
+++ b/drivers/acpi/processor_thermal.c

@@ -64,17 +64,14 @@ static int phys_package_first_cpu(int cpu)
 
 static int cpu_has_cpufreq(unsigned int cpu)
 {
-	struct cpufreq_policy *policy;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy);
 
 	if (!acpi_processor_cpufreq_init)
 		return 0;
 
 	policy = cpufreq_cpu_get(cpu);
-	if (policy) {
-		cpufreq_cpu_put(policy);
-		return 1;
-	}
-	return 0;
+
+	return !!policy;
 }
 
 static int cpufreq_get_max_state(unsigned int cpu)

@@ -95,7 +92,7 @@ static int cpufreq_get_cur_state(unsigned int cpu)
 
 static int cpufreq_set_cur_state(unsigned int cpu, int state)
 {
-	struct cpufreq_policy *policy;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy);
 	struct acpi_processor *pr;
 	unsigned long max_freq;
 	int i, ret;

@@ -127,8 +124,6 @@ static int cpufreq_set_cur_state(unsigned int cpu, int state)
 		max_freq = (policy->cpuinfo.max_freq *
 			    (100 - reduction_step(i) * cpufreq_thermal_reduction_pctg)) / 100;
 
-		cpufreq_cpu_put(policy);
-
 		ret = freq_qos_update_request(&pr->thermal_req, max_freq);
 		if (ret < 0) {
 			pr_warn("Failed to update thermal freq constraint: CPU%d (%d)\n",

diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c
index 5940d262374f..71450cca8e9f 100644
--- a/drivers/cpufreq/brcmstb-avs-cpufreq.c
+++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c

@@ -480,7 +480,7 @@ static bool brcm_avs_is_firmware_loaded(struct private_data *priv)
 
 static unsigned int brcm_avs_cpufreq_get(unsigned int cpu)
 {
-	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpu);
 	struct private_data *priv;
 
 	if (!policy)

@@ -488,8 +488,6 @@ static unsigned int brcm_avs_cpufreq_get(unsigned int cpu)
 
 	priv = policy->driver_data;
 
-	cpufreq_cpu_put(policy);
-
 	return brcm_avs_get_frequency(priv->base);
 }
 

diff --git a/drivers/cpufreq/cppc_cpufreq.c b/drivers/cpufreq/cppc_cpufreq.c
index 4a17162a392d..7183754b1f31 100644
--- a/drivers/cpufreq/cppc_cpufreq.c
+++ b/drivers/cpufreq/cppc_cpufreq.c

@@ -726,7 +726,7 @@ static int cppc_get_perf_ctrs_sample(int cpu,
 static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
 {
 	struct cppc_perf_fb_ctrs fb_ctrs_t0 = {0}, fb_ctrs_t1 = {0};
-	struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(cpu);
 	struct cppc_cpudata *cpu_data;
 	u64 delivered_perf;
 	int ret;

@@ -736,8 +736,6 @@ static unsigned int cppc_cpufreq_get_rate(unsigned int cpu)
 
 	cpu_data = policy->driver_data;
 
-	cpufreq_cpu_put(policy);
-
 	ret = cppc_get_perf_ctrs_sample(cpu, &fb_ctrs_t0, &fb_ctrs_t1);
 	if (ret) {
 		if (ret == -EFAULT)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index f366d35c5840..fb962140af56 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c

@@ -1698,7 +1698,7 @@ 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;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy);
 	int i;
 
 	for_each_possible_cpu(i) {

@@ -1710,7 +1710,6 @@ static void update_qos_request(enum freq_qos_req_type type)
 			continue;
 
 		req = policy->driver_data;
-		cpufreq_cpu_put(policy);
 
 		if (!req)
 			continue;

diff --git a/drivers/cpufreq/longhaul.c b/drivers/cpufreq/longhaul.c
index ba0e08c8486a..ae5596919671 100644
--- a/drivers/cpufreq/longhaul.c
+++ b/drivers/cpufreq/longhaul.c

@@ -950,7 +950,7 @@ static int __init longhaul_init(void)
 
 static void __exit longhaul_exit(void)
 {
-	struct cpufreq_policy *policy = cpufreq_cpu_get(0);
+	struct cpufreq_policy *policy __free(put_cpufreq_policy) = cpufreq_cpu_get(0);
 	int i;
 
 	for (i = 0; i < numscales; i++) {

@@ -968,7 +968,6 @@ static void __exit longhaul_exit(void)
 		}
 	}
 
-	cpufreq_cpu_put(policy);
 	cpufreq_unregister_driver(&longhaul_driver);
 	kfree(longhaul_table);
 }

diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index f3f02c4b6888..1fae060e16d9 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c

@@ -320,7 +320,7 @@ static int mtk_cpufreq_opp_notifier(struct notifier_block *nb,
 	struct dev_pm_opp *new_opp;
 	struct mtk_cpu_dvfs_info *info;
 	unsigned long freq, volt;
-	struct cpufreq_policy *policy;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy);
 	int ret = 0;
 
 	info = container_of(nb, struct mtk_cpu_dvfs_info, opp_nb);

@@ -354,11 +354,9 @@ static int mtk_cpufreq_opp_notifier(struct notifier_block *nb,
 
 			dev_pm_opp_put(new_opp);
 			policy = cpufreq_cpu_get(info->opp_cpu);
-			if (policy) {
+			if (policy)
 				cpufreq_driver_target(policy, freq / 1000,
 						      CPUFREQ_RELATION_L);
-				cpufreq_cpu_put(policy);
-			}
 		}
 	}
 

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 7d9a5f656de8..ea9d78bbeb38 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c

@@ -892,7 +892,7 @@ static int powernv_cpufreq_reboot_notifier(struct notifier_block *nb,
 				unsigned long action, void *unused)
 {
 	int cpu;
-	struct cpufreq_policy *cpu_policy;
+	struct cpufreq_policy *policy __free(put_cpufreq_policy);