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path: root/drivers/cpufreq
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Diffstat (limited to 'drivers/cpufreq')
-rw-r--r--drivers/cpufreq/cpufreq.c51
1 files changed, 33 insertions, 18 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 31d6f535a79..9044b911d8a 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -754,6 +754,11 @@ static struct kobj_type ktype_cpufreq = {
.release = cpufreq_sysfs_release,
};
+static struct kobj_type ktype_empty_cpufreq = {
+ .sysfs_ops = &sysfs_ops,
+ .release = cpufreq_sysfs_release,
+};
+
/**
* cpufreq_add_dev - add a CPU device
@@ -876,26 +881,36 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
memcpy(&new_policy, policy, sizeof(struct cpufreq_policy));
/* prepare interface data */
- ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, &sys_dev->kobj,
- "cpufreq");
- if (ret)
- goto err_out_driver_exit;
-
- /* set up files for this cpu device */
- drv_attr = cpufreq_driver->attr;
- while ((drv_attr) && (*drv_attr)) {
- ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr));
+ if (!cpufreq_driver->hide_interface) {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
- drv_attr++;
- }
- if (cpufreq_driver->get) {
- ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr);
- if (ret)
- goto err_out_driver_exit;
- }
- if (cpufreq_driver->target) {
- ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr);
+
+ /* set up files for this cpu device */
+ drv_attr = cpufreq_driver->attr;
+ while ((drv_attr) && (*drv_attr)) {
+ ret = sysfs_create_file(&policy->kobj,
+ &((*drv_attr)->attr));
+ if (ret)
+ goto err_out_driver_exit;
+ drv_attr++;
+ }
+ if (cpufreq_driver->get) {
+ ret = sysfs_create_file(&policy->kobj,
+ &cpuinfo_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ if (cpufreq_driver->target) {
+ ret = sysfs_create_file(&policy->kobj,
+ &scaling_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ } else {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_empty_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
}