1 files changed, 21 insertions, 16 deletions

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index 1ab0018271c5..ad09e51ffae4 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -50,15 +50,14 @@ struct cpufreq_cooling_device {
         unsigned int cpufreq_state;
         unsigned int cpufreq_val;
         struct cpumask allowed_cpus;
+        struct list_head node;
 };
 static DEFINE_IDR(cpufreq_idr);
 static DEFINE_MUTEX(cooling_cpufreq_lock);
 
 static unsigned int cpufreq_dev_count;
 
-/* notify_table passes value to the CPUFREQ_ADJUST callback function. */
-#define NOTIFY_INVALID NULL
-static struct cpufreq_cooling_device *notify_device;
+static LIST_HEAD(cpufreq_dev_list);
 
 /**
  * get_idr - function to get a unique id.
@@ -287,15 +286,12 @@ static int cpufreq_apply_cooling(struct cpufreq_cooling_device *cpufreq_device,
 
         cpufreq_device->cpufreq_state = cooling_state;
         cpufreq_device->cpufreq_val = clip_freq;
-        notify_device = cpufreq_device;
 
         for_each_cpu(cpuid, mask) {
                 if (is_cpufreq_valid(cpuid))
                         cpufreq_update_policy(cpuid);
         }
 
-        notify_device = NOTIFY_INVALID;
-
         return 0;
 }
 
@@ -316,21 +312,28 @@ static int cpufreq_thermal_notifier(struct notifier_block *nb,
 {
         struct cpufreq_policy *policy = data;
         unsigned long max_freq = 0;
+        struct cpufreq_cooling_device *cpufreq_dev;
 
-        if (event != CPUFREQ_ADJUST || notify_device == NOTIFY_INVALID)
+        if (event != CPUFREQ_ADJUST)
                 return 0;
 
-        if (cpumask_test_cpu(policy->cpu, &notify_device->allowed_cpus))
-                max_freq = notify_device->cpufreq_val;
-        else
-                return 0;
+        mutex_lock(&cooling_cpufreq_lock);
+        list_for_each_entry(cpufreq_dev, &cpufreq_dev_list, node) {
+                if (!cpumask_test_cpu(policy->cpu,
+                                        &cpufreq_dev->allowed_cpus))
+                        continue;
+
+                if (!cpufreq_dev->cpufreq_val)
+                        cpufreq_dev->cpufreq_val = get_cpu_frequency(
+                                        cpumask_any(&cpufreq_dev->allowed_cpus),
+                                        cpufreq_dev->cpufreq_state);
 
-        /* Never exceed user_policy.max */
-        if (max_freq > policy->user_policy.max)
-                max_freq = policy->user_policy.max;
+                max_freq = cpufreq_dev->cpufreq_val;
 
-        if (policy->max != max_freq)
-                cpufreq_verify_within_limits(policy, 0, max_freq);
+                if (policy->max != max_freq)
+                        cpufreq_verify_within_limits(policy, 0, max_freq);
+        }
+        mutex_unlock(&cooling_cpufreq_lock);
 
         return 0;
 }
@@ -486,6 +489,7 @@ __cpufreq_cooling_register(struct device_node *np,
                 cpufreq_register_notifier(&thermal_cpufreq_notifier_block,
                                           CPUFREQ_POLICY_NOTIFIER);
         cpufreq_dev_count++;
+        list_add(&cpufreq_dev->node, &cpufreq_dev_list);
 
         mutex_unlock(&cooling_cpufreq_lock);
 
@@ -549,6 +553,7 @@ void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
 
         cpufreq_dev = cdev->devdata;
         mutex_lock(&cooling_cpufreq_lock);
+        list_del(&cpufreq_dev->node);
         cpufreq_dev_count--;
 
         /* Unregister the notifier for the last cpufreq cooling device */