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path: root/drivers/cpufreq
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-rw-r--r--drivers/cpufreq/cpufreq.c42
1 files changed, 21 insertions, 21 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index c9701e9e53e4..de2c3e198b62 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -900,46 +900,31 @@ static int cpufreq_add_dev_interface(struct cpufreq_policy *policy,
struct freq_attr **drv_attr;
int ret = 0;
- /* prepare interface data */
- ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
- &dev->kobj, "cpufreq");
- if (ret)
- return ret;
-
/* 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_kobj_put;
+ return ret;
drv_attr++;
}
if (cpufreq_driver->get) {
ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr);
if (ret)
- goto err_out_kobj_put;
+ return ret;
}
ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr);
if (ret)
- goto err_out_kobj_put;
+ return ret;
if (cpufreq_driver->bios_limit) {
ret = sysfs_create_file(&policy->kobj, &bios_limit.attr);
if (ret)
- goto err_out_kobj_put;
+ return ret;
}
- ret = cpufreq_add_dev_symlink(policy);
- if (ret)
- goto err_out_kobj_put;
-
- return ret;
-
-err_out_kobj_put:
- kobject_put(&policy->kobj);
- wait_for_completion(&policy->kobj_unregister);
- return ret;
+ return cpufreq_add_dev_symlink(policy);
}
static void cpufreq_init_policy(struct cpufreq_policy *policy)
@@ -1198,6 +1183,8 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
goto err_set_policy_cpu;
}
+ down_write(&policy->rwsem);
+
/* related cpus should atleast have policy->cpus */
cpumask_or(policy->related_cpus, policy->related_cpus, policy->cpus);
@@ -1210,9 +1197,17 @@ static int __cpufreq_add_dev(struct device *dev, struct subsys_interface *sif)
if (!recover_policy) {
policy->user_policy.min = policy->min;
policy->user_policy.max = policy->max;
+
+ /* prepare interface data */
+ ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
+ &dev->kobj, "cpufreq");
+ if (ret) {
+ pr_err("%s: failed to init policy->kobj: %d\n",
+ __func__, ret);
+ goto err_init_policy_kobj;
+ }
}
- down_write(&policy->rwsem);
write_lock_irqsave(&cpufreq_driver_lock, flags);
for_each_cpu(j, policy->cpus)
per_cpu(cpufreq_cpu_data, j) = policy;
@@ -1303,6 +1298,11 @@ err_get_freq:
per_cpu(cpufreq_cpu_data, j) = NULL;
write_unlock_irqrestore(&cpufreq_driver_lock, flags);
+ if (!recover_policy) {
+ kobject_put(&policy->kobj);
+ wait_for_completion(&policy->kobj_unregister);
+ }
+err_init_policy_kobj:
up_write(&policy->rwsem);
if (cpufreq_driver->exit)
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