Add suspend-related notifications for CPU hotplug

[sfrench/cifs-2.6.git] / drivers / cpufreq / cpufreq.c

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index f52facc570f57c97841b7a4bd809f6929bbe88a8..eb37fba9b7efccf163badc70450aee38873b60d3 100644 (file)
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -768,6 +768,9 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
                unlock_policy_rwsem_write(cpu);
                goto err_out;
        }
+       policy->user_policy.min = policy->cpuinfo.min_freq;
+       policy->user_policy.max = policy->cpuinfo.max_freq;
+       policy->user_policy.governor = policy->governor;
 
 #ifdef CONFIG_SMP
        for_each_cpu_mask(j, policy->cpus) {
@@ -858,10 +861,13 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
 
        policy->governor = NULL; /* to assure that the starting sequence is
                                  * run in cpufreq_set_policy */
-       unlock_policy_rwsem_write(cpu);
 
        /* set default policy */
-       ret = cpufreq_set_policy(&new_policy);
+       ret = __cpufreq_set_policy(policy, &new_policy);
+       policy->user_policy.policy = policy->policy;
+
+       unlock_policy_rwsem_write(cpu);
+
        if (ret) {
                dprintk("setting policy failed\n");
                goto err_out_unregister;
@@ -1015,6 +1021,10 @@ static int cpufreq_remove_dev (struct sys_device * sys_dev)
 {
        unsigned int cpu = sys_dev->id;
        int retval;
+
+       if (cpu_is_offline(cpu))
+               return 0;
+
        if (unlikely(lock_policy_rwsem_write(cpu)))
                BUG();
 
@@ -1615,43 +1625,6 @@ error_out:
        return ret;
 }
 
-/**
- *     cpufreq_set_policy - set a new CPUFreq policy
- *     @policy: policy to be set.
- *
- *     Sets a new CPU frequency and voltage scaling policy.
- */
-int cpufreq_set_policy(struct cpufreq_policy *policy)
-{
-       int ret = 0;
-       struct cpufreq_policy *data;
-
-       if (!policy)
-               return -EINVAL;
-
-       data = cpufreq_cpu_get(policy->cpu);
-       if (!data)
-               return -EINVAL;
-
-       if (unlikely(lock_policy_rwsem_write(policy->cpu)))
-               return -EINVAL;
-
-
-       ret = __cpufreq_set_policy(data, policy);
-       data->user_policy.min = data->min;
-       data->user_policy.max = data->max;
-       data->user_policy.policy = data->policy;
-       data->user_policy.governor = data->governor;
-
-       unlock_policy_rwsem_write(policy->cpu);
-
-       cpufreq_cpu_put(data);
-
-       return ret;
-}
-EXPORT_SYMBOL(cpufreq_set_policy);
-
-
 /**
  *     cpufreq_update_policy - re-evaluate an existing cpufreq policy
  *     @cpu: CPU which shall be re-evaluated
@@ -1712,9 +1685,11 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
        if (sys_dev) {
                switch (action) {
                case CPU_ONLINE:
+               case CPU_ONLINE_FROZEN:
                        cpufreq_add_dev(sys_dev);
                        break;
                case CPU_DOWN_PREPARE:
+               case CPU_DOWN_PREPARE_FROZEN:
                        if (unlikely(lock_policy_rwsem_write(cpu)))
                                BUG();
 
@@ -1726,6 +1701,7 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
                        __cpufreq_remove_dev(sys_dev);
                        break;
                case CPU_DOWN_FAILED:
+               case CPU_DOWN_FAILED_FROZEN:
                        cpufreq_add_dev(sys_dev);
                        break;
                }