thermal: cpu_cooling: use cpufreq_dev_list instead of cpufreq_dev_count

As we already have a list of cpufreq_cooling_devices now, lets use it instead of
a local counter.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index d2e6f845fe7d..32ff6dc5efee 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -71,8 +71,6 @@ struct cpufreq_cooling_device {
 static DEFINE_IDR(cpufreq_idr);
 static DEFINE_MUTEX(cooling_cpufreq_lock);
 
-static unsigned int cpufreq_dev_count;
-
 static LIST_HEAD(cpufreq_dev_list);
 
 /**
@@ -419,10 +417,9 @@ __cpufreq_cooling_register(struct device_node *np,
         mutex_lock(&cooling_cpufreq_lock);
 
         /* Register the notifier for first cpufreq cooling device */
-        if (cpufreq_dev_count == 0)
+        if (list_empty(&cpufreq_dev_list))
                 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);
@@ -495,10 +492,9 @@ 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 */
-        if (cpufreq_dev_count == 0)
+        if (list_empty(&cpufreq_dev_list))
                 cpufreq_unregister_notifier(&thermal_cpufreq_notifier_block,
                                             CPUFREQ_POLICY_NOTIFIER);
         mutex_unlock(&cooling_cpufreq_lock);