diff options
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 9af14a8bbcdb..2417576393a6 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -183,6 +183,9 @@ err_out: struct cpufreq_policy *cpufreq_cpu_get(unsigned int cpu) { + if (cpufreq_disabled()) + return NULL; + return __cpufreq_cpu_get(cpu, false); } EXPORT_SYMBOL_GPL(cpufreq_cpu_get); @@ -201,6 +204,9 @@ static void __cpufreq_cpu_put(struct cpufreq_policy *data, bool sysfs) void cpufreq_cpu_put(struct cpufreq_policy *data) { + if (cpufreq_disabled()) + return; + __cpufreq_cpu_put(data, false); } EXPORT_SYMBOL_GPL(cpufreq_cpu_put); @@ -267,6 +273,9 @@ void cpufreq_notify_transition(struct cpufreq_freqs *freqs, unsigned int state) BUG_ON(irqs_disabled()); + if (cpufreq_disabled()) + return; + freqs->flags = cpufreq_driver->flags; pr_debug("notification %u of frequency transition to %u kHz\n", state, freqs->new); @@ -1408,6 +1417,9 @@ int cpufreq_register_notifier(struct notifier_block *nb, unsigned int list) { int ret; + if (cpufreq_disabled()) + return -EINVAL; + WARN_ON(!init_cpufreq_transition_notifier_list_called); switch (list) { @@ -1442,6 +1454,9 @@ int cpufreq_unregister_notifier(struct notifier_block *nb, unsigned int list) { int ret; + if (cpufreq_disabled()) + return -EINVAL; + switch (list) { case CPUFREQ_TRANSITION_NOTIFIER: ret = srcu_notifier_chain_unregister( @@ -1522,6 +1537,9 @@ int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu) { int ret = 0; + if (cpufreq_disabled()) + return ret; + if (!(cpu_online(cpu) && cpufreq_driver->getavg)) return 0; |