#include <linux/spinlock.h>
#include <linux/usb/composite.h>
#include <linux/videodev2.h>
+#include <linux/wait.h>
#include <media/v4l2-device.h>
#include <media/v4l2-dev.h>
struct usb_function func;
struct uvc_video video;
bool func_connected;
+ wait_queue_head_t func_connected_queue;
/* Descriptors */
struct {