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Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq.c44
1 files changed, 11 insertions, 33 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 29e3ec9..3199b8d 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1092,28 +1092,6 @@ static int cpufreq_add_policy_cpu(struct cpufreq_policy *policy,
return 0;
}
-static struct cpufreq_policy *cpufreq_policy_restore(unsigned int cpu)
-{
- struct cpufreq_policy *policy;
- unsigned long flags;
-
- read_lock_irqsave(&cpufreq_driver_lock, flags);
- policy = per_cpu(cpufreq_cpu_data, cpu);
- read_unlock_irqrestore(&cpufreq_driver_lock, flags);
-
- if (likely(policy)) {
- /* Policy should be inactive here */
- WARN_ON(!policy_is_inactive(policy));
-
- down_write(&policy->rwsem);
- policy->cpu = cpu;
- policy->governor = NULL;
- up_write(&policy->rwsem);
- }
-
- return policy;
-}
-
static struct cpufreq_policy *cpufreq_policy_alloc(struct device *dev)
{
struct cpufreq_policy *policy;
@@ -1226,7 +1204,7 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
int ret = -ENOMEM;
struct cpufreq_policy *policy;
unsigned long flags;
- bool recover_policy = !sif;
+ bool recover_policy;
pr_debug("adding CPU %u\n", cpu);
@@ -1244,18 +1222,18 @@ static int cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
/* Check if this CPU already has a policy to manage it */
policy = per_cpu(cpufreq_cpu_data, cpu);
- if (policy && !policy_is_inactive(policy)) {
+ if (policy) {
WARN_ON(!cpumask_test_cpu(cpu, policy->related_cpus));
- ret = cpufreq_add_policy_cpu(policy, cpu, dev);
- return ret;
- }
+ if (!policy_is_inactive(policy))
+ return cpufreq_add_policy_cpu(policy, cpu, dev);
- /*
- * Restore the saved policy when doing light-weight init and fall back
- * to the full init if that fails.
- */
- policy = recover_policy ? cpufreq_policy_restore(cpu) : NULL;
- if (!policy) {
+ /* This is the only online CPU for the policy. Start over. */
+ recover_policy = true;
+ down_write(&policy->rwsem);
+ policy->cpu = cpu;
+ policy->governor = NULL;
+ up_write(&policy->rwsem);
+ } else {
recover_policy = false;
policy = cpufreq_policy_alloc(dev);
if (!policy)