[PATCH v5 6/6] PM: EM: Use scope-based cleanup helper

[Zihuan Zhang]

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 <zhangzih...@kylinos.cn>
---
 kernel/power/energy_model.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c
index ea7995a25780..5ec63b3e7d85 100644
--- a/kernel/power/energy_model.c
+++ b/kernel/power/energy_model.c
@@ -451,7 +451,6 @@ static void
 em_cpufreq_update_efficiencies(struct device *dev, struct em_perf_state *table)
 {
        struct em_perf_domain *pd = dev->em_pd;
-       struct cpufreq_policy *policy;
        int found = 0;
        int i, cpu;
 
@@ -465,7 +464,7 @@ em_cpufreq_update_efficiencies(struct device *dev, struct 
em_perf_state *table)
                return;
        }
 
-       policy = cpufreq_cpu_get(cpu);
+       struct cpufreq_policy *policy __free(put_cpufreq_policy) = 
cpufreq_cpu_get(cpu);
        if (!policy) {
                dev_warn(dev, "EM: Access to CPUFreq policy failed\n");
                return;
@@ -479,8 +478,6 @@ em_cpufreq_update_efficiencies(struct device *dev, struct 
em_perf_state *table)
                        found++;
        }
 
-       cpufreq_cpu_put(policy);
-
        if (!found)
                return;
 
@@ -787,21 +784,19 @@ static void em_check_capacity_update(void)
 
        /* Check if CPUs capacity has changed than update EM */
        for_each_possible_cpu(cpu) {
-               struct cpufreq_policy *policy;
                struct em_perf_domain *pd;
                struct device *dev;
 
                if (cpumask_test_cpu(cpu, cpu_done_mask))
                        continue;
 
-               policy = cpufreq_cpu_get(cpu);
+               struct cpufreq_policy *policy __free(put_cpufreq_policy) = 
cpufreq_cpu_get(cpu);
                if (!policy) {
                        pr_debug("Accessing cpu%d policy failed\n", cpu);
                        schedule_delayed_work(&em_update_work,
                                              msecs_to_jiffies(1000));
                        break;
                }
-               cpufreq_cpu_put(policy);
 
                dev = get_cpu_device(cpu);
                pd = em_pd_get(dev);
-- 
2.25.1