X-Git-Url: http://git.cascardo.eti.br/?a=blobdiff_plain;f=drivers%2Fcpufreq%2Fcpufreq.c;h=01dde80597f7e35248c3c8fd0dbdc29faa795743;hb=9e42d0cf5020aaf217433cad1a224745241d212a;hp=8a67f16987db16582e87a49514cf3a99158d542e;hpb=4c0e799a9a6dc64426ddb6c03aea1a154357658f;p=cascardo%2Flinux.git

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 8a67f16987db..01dde80597f7 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
@@ -822,8 +827,8 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
 		dprintk("initialization failed\n");
 		goto err_out;
 	}
-	policy->user_policy.min = policy->cpuinfo.min_freq;
-	policy->user_policy.max = policy->cpuinfo.max_freq;
+	policy->user_policy.min = policy->min;
+	policy->user_policy.max = policy->max;
 
 	blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
 				     CPUFREQ_START, policy);
@@ -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;
 	}
@@ -1467,25 +1482,27 @@ int cpufreq_driver_target(struct cpufreq_policy *policy,
 			  unsigned int target_freq,
 			  unsigned int relation)
 {
-	int ret;
+	int ret = -EINVAL;
 
 	policy = cpufreq_cpu_get(policy->cpu);
 	if (!policy)
-		return -EINVAL;
+		goto no_policy;
 
 	if (unlikely(lock_policy_rwsem_write(policy->cpu)))
-		return -EINVAL;
+		goto fail;
 
 	ret = __cpufreq_driver_target(policy, target_freq, relation);
 
 	unlock_policy_rwsem_write(policy->cpu);
 
+fail:
 	cpufreq_cpu_put(policy);
+no_policy:
 	return ret;
 }
 EXPORT_SYMBOL_GPL(cpufreq_driver_target);
 
-int __cpufreq_driver_getavg(struct cpufreq_policy *policy)
+int __cpufreq_driver_getavg(struct cpufreq_policy *policy, unsigned int cpu)
 {
 	int ret = 0;
 
@@ -1493,8 +1510,8 @@ int __cpufreq_driver_getavg(struct cpufreq_policy *policy)
 	if (!policy)
 		return -EINVAL;
 
-	if (cpu_online(policy->cpu) && cpufreq_driver->getavg)
-		ret = cpufreq_driver->getavg(policy->cpu);
+	if (cpu_online(cpu) && cpufreq_driver->getavg)
+		ret = cpufreq_driver->getavg(policy, cpu);
 
 	cpufreq_cpu_put(policy);
 	return ret;
@@ -1717,13 +1734,17 @@ int cpufreq_update_policy(unsigned int cpu)
 {
 	struct cpufreq_policy *data = cpufreq_cpu_get(cpu);
 	struct cpufreq_policy policy;
-	int ret = 0;
+	int ret;
 
-	if (!data)
-		return -ENODEV;
+	if (!data) {
+		ret = -ENODEV;
+		goto no_policy;
+	}
 
-	if (unlikely(lock_policy_rwsem_write(cpu)))
-		return -EINVAL;
+	if (unlikely(lock_policy_rwsem_write(cpu))) {
+		ret = -EINVAL;
+		goto fail;
+	}
 
 	dprintk("updating policy for CPU %u\n", cpu);
 	memcpy(&policy, data, sizeof(struct cpufreq_policy));
@@ -1750,7 +1771,9 @@ int cpufreq_update_policy(unsigned int cpu)
 
 	unlock_policy_rwsem_write(cpu);
 
+fail:
 	cpufreq_cpu_put(data);
+no_policy:
 	return ret;
 }
 EXPORT_SYMBOL(cpufreq_update_policy);