diff mbox

[V2,09/20] cpufreq: Get rid of cpufreq_cpu_data_fallback

Message ID 931526f13b5213db72a6f6cc31730ee82ac9b780.1424345053.git.viresh.kumar@linaro.org
State New
Headers show

Commit Message

Viresh Kumar Feb. 19, 2015, 11:32 a.m. UTC 
We can extract the same information from cpufreq_cpu_data as it is also
available for inactive policies now.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/cpufreq.c | 25 ++++++-------------------
 1 file changed, 6 insertions(+), 19 deletions(-)
diff mbox

Patch

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index e27b2a7bd9b3..f849b2a33d3e 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -112,7 +112,6 @@  static LIST_HEAD(cpufreq_governor_list);
  */
 static struct cpufreq_driver *cpufreq_driver;
 static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data);
-static DEFINE_PER_CPU(struct cpufreq_policy *, cpufreq_cpu_data_fallback);
 static DEFINE_RWLOCK(cpufreq_driver_lock);
 DEFINE_MUTEX(cpufreq_governor_lock);
 
@@ -1092,13 +1091,14 @@  static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu)
 	unsigned long flags;
 
 	read_lock_irqsave(&cpufreq_driver_lock, flags);
-
-	policy = per_cpu(cpufreq_cpu_data_fallback, cpu);
-
+	policy = per_cpu(cpufreq_cpu_data, cpu);
 	read_unlock_irqrestore(&cpufreq_driver_lock, flags);
 
-	if (policy)
+	if (likely(policy)) {
+		/* Policy should be inactive here */
+		WARN_ON(!policy_is_inactive(policy));
 		policy->governor = NULL;
+	}
 
 	return policy;
 }
@@ -1394,11 +1394,8 @@  static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
 	if (cpufreq_driver->exit)
 		cpufreq_driver->exit(policy);
 err_set_policy_cpu:
-	if (recover_policy) {
-		/* Do not leave stale fallback data behind. */
-		per_cpu(cpufreq_cpu_data_fallback, cpu) = NULL;
+	if (recover_policy)
 		cpufreq_policy_put_kobj(policy);
-	}
 	cpufreq_policy_free(policy);
 
 nomem_out:
@@ -1412,21 +1409,11 @@  static int __cpufreq_remove_dev_prepare(struct device *dev,
 {
 	unsigned int cpu = dev->id, cpus;
 	int ret;
-	unsigned long flags;
 	struct cpufreq_policy *policy;
 
 	pr_debug("%s: unregistering CPU %u\n", __func__, cpu);
 
-	write_lock_irqsave(&cpufreq_driver_lock, flags);
-
 	policy = cpufreq_cpu_get_raw(cpu);
-
-	/* Save the policy somewhere when doing a light-weight tear-down */
-	if (cpufreq_suspended)
-		per_cpu(cpufreq_cpu_data_fallback, cpu) = policy;
-
-	write_unlock_irqrestore(&cpufreq_driver_lock, flags);
-
 	if (!policy) {
 		pr_debug("%s: No cpu_data found\n", __func__);
 		return -EINVAL;