#ifndef __LINUX_FUNCTIONFS_H__#define __LINUX_FUNCTIONFS_H__ 1 #include <uapi/linux/usb/functionfs.h>  struct ffs_data;struct usb_composite_dev;struct usb_configuration;  static int  functionfs_init(void) __attribute__((warn_unused_result));static void functionfs_cleanup(void); static int functionfs_bind(struct ffs_data *ffs, struct usb_composite_dev *cdev)	__attribute__((warn_unused_result, nonnull));static void functionfs_unbind(struct ffs_data *ffs)	__attribute__((nonnull)); static int functionfs_bind_config(struct usb_composite_dev *cdev,				  struct usb_configuration *c,				  struct ffs_data *ffs)	__attribute__((warn_unused_result, nonnull));  static int functionfs_ready_callback(struct ffs_data *ffs)	__attribute__((warn_unused_result, nonnull));static void functionfs_closed_callback(struct ffs_data *ffs)	__attribute__((nonnull));static void *functionfs_acquire_dev_callback(const char *dev_name)	__attribute__((warn_unused_result, nonnull));static void functionfs_release_dev_callback(struct ffs_data *ffs_data)	__attribute__((nonnull));  #endif