1 files changed, 76 insertions, 93 deletions

diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index b0792361c52e..ec06b9989278 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -992,47 +992,27 @@ static struct led_classdev applesmc_backlight = {
 	.brightness_set		= applesmc_brightness_set,
 };
 
-static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
-
-static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
-static DEVICE_ATTR(calibrate, 0644,
-			applesmc_calibrate_show, applesmc_calibrate_store);
-
-static struct attribute *accelerometer_attributes[] = {
-	&dev_attr_position.attr,
-	&dev_attr_calibrate.attr,
-	NULL
+static struct applesmc_node_group info_group[] = {
+	{ "name", applesmc_name_show },
+	{ "key_count", applesmc_key_count_show },
+	{ "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store },
+	{ "key_at_index_name", applesmc_key_at_index_name_show },
+	{ "key_at_index_type", applesmc_key_at_index_type_show },
+	{ "key_at_index_data_length", applesmc_key_at_index_data_length_show },
+	{ "key_at_index_data", applesmc_key_at_index_read_show },
+	{ }
 };
 
-static const struct attribute_group accelerometer_attributes_group =
-	{ .attrs = accelerometer_attributes };
-
-static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
-
-static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
-static DEVICE_ATTR(key_at_index, 0644,
-		applesmc_key_at_index_show, applesmc_key_at_index_store);
-static DEVICE_ATTR(key_at_index_name, 0444,
-					applesmc_key_at_index_name_show, NULL);
-static DEVICE_ATTR(key_at_index_type, 0444,
-					applesmc_key_at_index_type_show, NULL);
-static DEVICE_ATTR(key_at_index_data_length, 0444,
-				applesmc_key_at_index_data_length_show, NULL);
-static DEVICE_ATTR(key_at_index_data, 0444,
-				applesmc_key_at_index_read_show, NULL);
-
-static struct attribute *key_enumeration_attributes[] = {
-	&dev_attr_key_count.attr,
-	&dev_attr_key_at_index.attr,
-	&dev_attr_key_at_index_name.attr,
-	&dev_attr_key_at_index_type.attr,
-	&dev_attr_key_at_index_data_length.attr,
-	&dev_attr_key_at_index_data.attr,
-	NULL
+static struct applesmc_node_group accelerometer_group[] = {
+	{ "position", applesmc_position_show },
+	{ "calibrate", applesmc_calibrate_show, applesmc_calibrate_store },
+	{ }
 };
 
-static const struct attribute_group key_enumeration_group =
-	{ .attrs = key_enumeration_attributes };
+static struct applesmc_node_group light_sensor_group[] = {
+	{ "light", applesmc_light_show },
+	{ }
+};
 
 static struct applesmc_node_group fan_group[] = {
 	{ "fan%d_label", applesmc_show_fan_position },
@@ -1115,8 +1095,10 @@ static int applesmc_create_accelerometer(void)
 	struct input_dev *idev;
 	int ret;
 
-	ret = sysfs_create_group(&pdev->dev.kobj,
-					&accelerometer_attributes_group);
+	if (!smcreg.has_accelerometer)
+		return 0;
+
+	ret = applesmc_create_nodes(accelerometer_group, 1);
 	if (ret)
 		goto out;
 
@@ -1153,7 +1135,7 @@ out_idev:
 	input_free_polled_device(applesmc_idev);
 
 out_sysfs:
-	sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
+	applesmc_destroy_nodes(accelerometer_group);
 
 out:
 	pr_warn("driver init failed (ret=%d)!\n", ret);
@@ -1163,10 +1145,45 @@ out:
 /* Release all ressources used by the accelerometer */
 static void applesmc_release_accelerometer(void)
 {
+	if (!smcreg.has_accelerometer)
+		return;
 	input_unregister_polled_device(applesmc_idev);
 	input_free_polled_device(applesmc_idev);
-	sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
+	applesmc_destroy_nodes(accelerometer_group);
 }
+
+static int applesmc_create_light_sensor(void)
+{
+	if (!smcreg.num_light_sensors)
+		return 0;
+	return applesmc_create_nodes(light_sensor_group, 1);
+}
+
+static void applesmc_release_light_sensor(void)
+{
+	if (!smcreg.num_light_sensors)
+		return;
+	applesmc_destroy_nodes(light_sensor_group);
+}
+
+static int applesmc_create_key_backlight(void)
+{
+	if (!smcreg.has_key_backlight)
+		return 0;
+	applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
+	if (!applesmc_led_wq)
+		return -ENOMEM;
+	return led_classdev_register(&pdev->dev, &applesmc_backlight);
+}
+
+static void applesmc_release_key_backlight(void)
+{
+	if (!smcreg.has_key_backlight)
+		return;
+	led_classdev_unregister(&applesmc_backlight);
+	destroy_workqueue(applesmc_led_wq);
+}
+
 static int applesmc_dmi_match(const struct dmi_system_id *id)
 {
 	return 1;
@@ -1234,15 +1251,10 @@ static int __init applesmc_init(void)
 	if (ret)
 		goto out_device;
 
-	ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
+	ret = applesmc_create_nodes(info_group, 1);
 	if (ret)
 		goto out_smcreg;
 
-	/* Create key enumeration sysfs files */
-	ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
-	if (ret)
-		goto out_name;
-
 	ret = applesmc_create_nodes(fan_group, smcreg.fan_count);
 	if (ret)
 		goto out_info;
@@ -1251,32 +1263,17 @@ static int __init applesmc_init(void)
 	if (ret)
 		goto out_fans;
 
-	if (smcreg.has_accelerometer) {
-		ret = applesmc_create_accelerometer();
-		if (ret)
-			goto out_temperature;
-	}
-
-	if (smcreg.num_light_sensors) {
-		/* Add light sensor file */
-		ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
-		if (ret)
-			goto out_accelerometer;
-	}
+	ret = applesmc_create_accelerometer();
+	if (ret)
+		goto out_temperature;
 
-	if (smcreg.has_key_backlight) {
-		/* Create the workqueue */
-		applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
-		if (!applesmc_led_wq) {
-			ret = -ENOMEM;
-			goto out_light_sysfs;
-		}
+	ret = applesmc_create_light_sensor();
+	if (ret)
+		goto out_accelerometer;
 
-		/* register as a led device */
-		ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
-		if (ret < 0)
-			goto out_light_wq;
-	}
+	ret = applesmc_create_key_backlight();
+	if (ret)
+		goto out_light_sysfs;
 
 	hwmon_dev = hwmon_device_register(&pdev->dev);
 	if (IS_ERR(hwmon_dev)) {
@@ -1289,25 +1286,17 @@ static int __init applesmc_init(void)
 	return 0;
 
 out_light_ledclass:
-	if (smcreg.has_key_backlight)
-		led_classdev_unregister(&applesmc_backlight);
-out_light_wq:
-	if (smcreg.has_key_backlight)
-		destroy_workqueue(applesmc_led_wq);
+	applesmc_release_key_backlight();
 out_light_sysfs:
-	if (smcreg.num_light_sensors)
-		sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
+	applesmc_release_light_sensor();
 out_accelerometer:
-	if (smcreg.has_accelerometer)
-		applesmc_release_accelerometer();
+	applesmc_release_accelerometer();
 out_temperature:
 	applesmc_destroy_nodes(temp_group);
 out_fans:
 	applesmc_destroy_nodes(fan_group);
 out_info:
-	sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
-out_name:
-	sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
+	applesmc_destroy_nodes(info_group);
 out_smcreg:
 	applesmc_destroy_smcreg();
 out_device:
@@ -1324,18 +1313,12 @@ out:
 static void __exit applesmc_exit(void)
 {
 	hwmon_device_unregister(hwmon_dev);
-	if (smcreg.has_key_backlight) {
-		led_classdev_unregister(&applesmc_backlight);
-		destroy_workqueue(applesmc_led_wq);
-	}
-	if (smcreg.num_light_sensors)
-		sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
-	if (smcreg.has_accelerometer)
-		applesmc_release_accelerometer();
+	applesmc_release_key_backlight();
+	applesmc_release_light_sensor();
+	applesmc_release_accelerometer();
 	applesmc_destroy_nodes(temp_group);
 	applesmc_destroy_nodes(fan_group);
-	sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
-	sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
+	applesmc_destroy_nodes(info_group);
 	applesmc_destroy_smcreg();
 	platform_device_unregister(pdev);
 	platform_driver_unregister(&applesmc_driver);