* @fn is allowed to do anything including calling back into class
* code. There's no locking restriction.
*/
-int class_for_each_device(struct class *class, struct device *start,
+int class_for_each_device(const struct class *class, const struct device *start,
void *data, int (*fn)(struct device *, void *))
{
struct class_dev_iter iter;
extern struct device *class_dev_iter_next(struct class_dev_iter *iter);
extern void class_dev_iter_exit(struct class_dev_iter *iter);
-extern int class_for_each_device(struct class *class, struct device *start,
+extern int class_for_each_device(const struct class *class, const struct device *start,
void *data,
int (*fn)(struct device *dev, void *data));
extern struct device *class_find_device(struct class *class,