diff mbox

[21/26] cpu_cooling: create list of cpufreq_cooling_devices

Message ID 451cea6e5f417b0e76747ea8d8f3aa852f8bbf54.1417167599.git.viresh.kumar@linaro.org
State New
Headers show

Commit Message

Viresh Kumar Nov. 28, 2014, 9:44 a.m. UTC 
That will be used by later patches to iterate over all cpufreq cooling devices.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/thermal/cpu_cooling.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox

Patch

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index ddb97aa..f76a665 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -66,8 +66,11 @@  struct cpufreq_cooling_device {
 	unsigned int cpufreq_val;
 	unsigned int max_level;
 	struct cpumask allowed_cpus;
+	struct list_head head;
 };
+
 static DEFINE_IDR(cpufreq_idr);
+static LIST_HEAD(cpufreq_dev_list);
 static DEFINE_MUTEX(cooling_cpufreq_lock);
 
 static unsigned int cpufreq_dev_count;
@@ -372,6 +375,7 @@  __cpufreq_cooling_register(struct device_node *np,
 		goto remove_idr;
 
 	cpufreq_dev->cool_dev = cool_dev;
+	INIT_LIST_HEAD(&cpufreq_dev->head);
 
 	mutex_lock(&cooling_cpufreq_lock);
 
@@ -381,6 +385,7 @@  __cpufreq_cooling_register(struct device_node *np,
 					  CPUFREQ_POLICY_NOTIFIER);
 	cpufreq_dev_count++;
 
+	list_add(&cpufreq_dev->head, &cpufreq_dev_list);
 	mutex_unlock(&cooling_cpufreq_lock);
 
 	return cool_dev;
@@ -451,6 +456,7 @@  void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
 	cpufreq_dev = cdev->devdata;
 	mutex_lock(&cooling_cpufreq_lock);
 	cpufreq_dev_count--;
+	list_del(&cpufreq_dev->head);
 
 	/* Unregister the notifier for the last cpufreq cooling device */
 	if (cpufreq_dev_count == 0)