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Commit 5f46c2f2 authored by Alex Chiang's avatar Alex Chiang Committed by Len Brown
Browse files

ACPI: dock: convert sysfs attributes to an attribute_group 



As suggested by Dmitry Torokhov, convert the individual sysfs
attributes into an attribute group.

This change eliminates quite a bit of copy/paste code in the
error handling paths.

Signed-off-by: default avatarAlex Chiang <achiang@hp.com>
Reviewed-by: default avatarDmitry Torokhov <dtor@mail.ru>
Acked-by: default avatarShaohua Li <shaohua.li@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 012abeea

drivers/acpi/dock.c

+24 −57
Original line number Diff line number Diff line
@@ -936,6 +936,19 @@ static ssize_t show_dock_type(struct device *dev, 
}

static DEVICE_ATTR(type, S_IRUGO, show_dock_type, NULL);



static struct attribute *dock_attributes[] = {

	&dev_attr_docked.attr,

	&dev_attr_flags.attr,

	&dev_attr_undock.attr,

	&dev_attr_uid.attr,

	&dev_attr_type.attr,

	NULL

};



static struct attribute_group dock_attribute_group = {

	.attrs = dock_attributes

};



/**

 * dock_add - add a new dock station

 * @handle: the dock station handle
@@ -969,9 +982,8 @@ static int dock_add(acpi_handle handle) 
			dock_station_count, NULL, 0);

	dock_device = dock_station->dock_device;

	if (IS_ERR(dock_device)) {

		kfree(dock_station);

		dock_station = NULL;

		return PTR_ERR(dock_device);

		ret = PTR_ERR(dock_device);

		goto out;

	}

	platform_device_add_data(dock_device, &dock_station,

		sizeof(struct dock_station *));
@@ -986,47 +998,9 @@ static int dock_add(acpi_handle handle) 
	if (is_battery(handle))

		dock_station->flags |= DOCK_IS_BAT;



	ret = device_create_file(&dock_device->dev, &dev_attr_docked);

	if (ret) {

		printk(KERN_ERR "Error %d adding sysfs file\n", ret);

		platform_device_unregister(dock_device);

		kfree(dock_station);

		dock_station = NULL;

		return ret;

	}

	ret = device_create_file(&dock_device->dev, &dev_attr_undock);

	if (ret) {

		printk(KERN_ERR "Error %d adding sysfs file\n", ret);

		device_remove_file(&dock_device->dev, &dev_attr_docked);

		platform_device_unregister(dock_device);

		kfree(dock_station);

		dock_station = NULL;

		return ret;

	}

	ret = device_create_file(&dock_device->dev, &dev_attr_uid);

	if (ret) {

		printk(KERN_ERR "Error %d adding sysfs file\n", ret);

		device_remove_file(&dock_device->dev, &dev_attr_docked);

		device_remove_file(&dock_device->dev, &dev_attr_undock);

		platform_device_unregister(dock_device);

		kfree(dock_station);

		dock_station = NULL;

		return ret;

	}

	ret = device_create_file(&dock_device->dev, &dev_attr_flags);

	if (ret) {

		printk(KERN_ERR "Error %d adding sysfs file\n", ret);

		device_remove_file(&dock_device->dev, &dev_attr_docked);

		device_remove_file(&dock_device->dev, &dev_attr_undock);

		device_remove_file(&dock_device->dev, &dev_attr_uid);

		platform_device_unregister(dock_device);

		kfree(dock_station);

		dock_station = NULL;

		return ret;

	}

	ret = device_create_file(&dock_device->dev, &dev_attr_type);

	ret = sysfs_create_group(&dock_device->dev.kobj, &dock_attribute_group);

	if (ret)

		printk(KERN_ERR"Error %d adding sysfs file\n", ret);

		goto err_unregister;



	/* Find dependent devices */

	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
@@ -1036,10 +1010,8 @@ static int dock_add(acpi_handle handle) 
	/* add the dock station as a device dependent on itself */

	dd = alloc_dock_dependent_device(handle);

	if (!dd) {

		kfree(dock_station);

		dock_station = NULL;

		ret = -ENOMEM;

		goto dock_add_err_unregister;

		goto err_rmgroup;

	}

	add_dock_dependent_device(dock_station, dd);
@@ -1047,15 +1019,14 @@ static int dock_add(acpi_handle handle) 
	list_add(&dock_station->sibling, &dock_stations);

	return 0;



dock_add_err_unregister:

	device_remove_file(&dock_device->dev, &dev_attr_type);

	device_remove_file(&dock_device->dev, &dev_attr_docked);

	device_remove_file(&dock_device->dev, &dev_attr_undock);

	device_remove_file(&dock_device->dev, &dev_attr_uid);

	device_remove_file(&dock_device->dev, &dev_attr_flags);

err_rmgroup:

	sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);

err_unregister:

	platform_device_unregister(dock_device);

out:

	kfree(dock_station);

	dock_station = NULL;

	printk(KERN_ERR "%s encountered error %d\n", __func__, ret);

	return ret;

}
@@ -1076,11 +1047,7 @@ static int dock_remove(struct dock_station *dock_station) 
	    kfree(dd);



	/* cleanup sysfs */

	device_remove_file(&dock_device->dev, &dev_attr_type);

	device_remove_file(&dock_device->dev, &dev_attr_docked);

	device_remove_file(&dock_device->dev, &dev_attr_undock);

	device_remove_file(&dock_device->dev, &dev_attr_uid);

	device_remove_file(&dock_device->dev, &dev_attr_flags);

	sysfs_remove_group(&dock_device->dev.kobj, &dock_attribute_group);

	platform_device_unregister(dock_device);



	/* free dock station memory */