dprintk("cpufreq_set for cpu %u, freq %u kHz\n", policy->cpu, freq);
- lock_cpu_hotplug();
mutex_lock(&userspace_mutex);
if (!cpu_is_managed[policy->cpu])
goto err;
err:
mutex_unlock(&userspace_mutex);
- unlock_cpu_hotplug();
return ret;
}
unsigned int event)
{
unsigned int cpu = policy->cpu;
+ int rc = 0;
+
switch (event) {
case CPUFREQ_GOV_START:
if (!cpu_online(cpu))
return -EINVAL;
BUG_ON(!policy->cur);
mutex_lock(&userspace_mutex);
+ rc = sysfs_create_file (&policy->kobj,
+ &freq_attr_scaling_setspeed.attr);
+ if (rc)
+ goto start_out;
+
cpu_is_managed[cpu] = 1;
cpu_min_freq[cpu] = policy->min;
cpu_max_freq[cpu] = policy->max;
cpu_cur_freq[cpu] = policy->cur;
cpu_set_freq[cpu] = policy->cur;
- sysfs_create_file (&policy->kobj, &freq_attr_scaling_setspeed.attr);
dprintk("managing cpu %u started (%u - %u kHz, currently %u kHz)\n", cpu, cpu_min_freq[cpu], cpu_max_freq[cpu], cpu_cur_freq[cpu]);
+start_out:
mutex_unlock(&userspace_mutex);
break;
case CPUFREQ_GOV_STOP:
mutex_unlock(&userspace_mutex);
break;
}
- return 0;
+ return rc;
}