diff options
Diffstat (limited to 'drivers/thermal/cpu_cooling.c')
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 8 |
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); |