Commit 3914d379 authored by Viresh Kumar's avatar Viresh Kumar Committed by Rafael J. Wysocki

cpufreq: Get rid of cpufreq_cpu_data_fallback

We can extract the same information from cpufreq_cpu_data as it is also
available for inactive policies now. And so don't need
cpufreq_cpu_data_fallback anymore.

Also add a WARN_ON() for the case where we try to restore from an active
policy.
Acked-by: default avatarSaravana Kannan <skannan@codeaurora.org>
Signed-off-by: default avatarViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 988bed09
......@@ -101,7 +101,6 @@ 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);
......@@ -1081,13 +1080,14 @@ 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;
}
......@@ -1383,11 +1383,8 @@ 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:
......@@ -1401,21 +1398,11 @@ 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;
......
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