driver core: remove dev_attrs from struct class

Now that all in-kernel users of the dev_attrs field are converted to use
dev_groups, we can safely remove dev_attrs from struct class.
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/base/core.c

@@ -455,35 +455,6 @@ static ssize_t online_store(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RW(online);
 
-static int device_add_attributes(struct device *dev,
-				 struct device_attribute *attrs)
-{
-	int error = 0;
-	int i;
-
-	if (attrs) {
-		for (i = 0; attrs[i].attr.name; i++) {
-			error = device_create_file(dev, &attrs[i]);
-			if (error)
-				break;
-		}
-		if (error)
-			while (--i >= 0)
-				device_remove_file(dev, &attrs[i]);
-	}
-	return error;
-}
-
-static void device_remove_attributes(struct device *dev,
-				     struct device_attribute *attrs)
-{
-	int i;
-
-	if (attrs)
-		for (i = 0; attrs[i].attr.name; i++)
-			device_remove_file(dev, &attrs[i]);
-}
-
 static int device_add_bin_attributes(struct device *dev,
 				     struct bin_attribute *attrs)
 {
@@ -534,12 +505,9 @@ static int device_add_attrs(struct device *dev)
 		error = device_add_groups(dev, class->dev_groups);
 		if (error)
 			return error;
-		error = device_add_attributes(dev, class->dev_attrs);
-		if (error)
-			goto err_remove_class_groups;
 		error = device_add_bin_attributes(dev, class->dev_bin_attrs);
 		if (error)
-			goto err_remove_class_attrs;
+			goto err_remove_class_groups;
 	}
 
 	if (type) {
@@ -566,9 +534,6 @@ static int device_add_attrs(struct device *dev)
  err_remove_class_bin_attrs:
 	if (class)
 		device_remove_bin_attributes(dev, class->dev_bin_attrs);
- err_remove_class_attrs:
-	if (class)
-		device_remove_attributes(dev, class->dev_attrs);
  err_remove_class_groups:
 	if (class)
 		device_remove_groups(dev, class->dev_groups);
@@ -588,7 +553,6 @@ static void device_remove_attrs(struct device *dev)
 		device_remove_groups(dev, type->groups);
 
 	if (class) {
-		device_remove_attributes(dev, class->dev_attrs);
 		device_remove_bin_attributes(dev, class->dev_bin_attrs);
 		device_remove_groups(dev, class->dev_groups);
 	}

include/linux/device.h

@@ -325,7 +325,6 @@ int subsys_virtual_register(struct bus_type *subsys,
  * @owner:	The module owner.
  * @class_attrs: Default attributes of this class.
  * @dev_groups:	Default attributes of the devices that belong to the class.
- * @dev_attrs:	Default attributes of the devices belong to the class.
  * @dev_bin_attrs: Default binary attributes of the devices belong to the class.
  * @dev_kobj:	The kobject that represents this class and links it into the hierarchy.
  * @dev_uevent:	Called when a device is added, removed from this class, or a
@@ -354,7 +353,6 @@ struct class {
 	struct module		*owner;
 
 	struct class_attribute		*class_attrs;
-	struct device_attribute		*dev_attrs;	/* use dev_groups instead */
 	const struct attribute_group	**dev_groups;
 	struct bin_attribute		*dev_bin_attrs;
 	struct kobject			*dev_kobj;