--- zzzz-none-000/linux-3.10.107/net/bluetooth/hidp/hidp.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/net/bluetooth/hidp/hidp.h	2021-02-04 17:41:59.000000000 +0000
@@ -24,6 +24,7 @@
 #define __HIDP_H
 
 #include <linux/types.h>
+#include <linux/hid.h>
 #include <linux/kref.h>
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/l2cap.h>
@@ -128,6 +129,7 @@
 
 enum hidp_session_state {
 	HIDP_SESSION_IDLING,
+	HIDP_SESSION_PREPARING,
 	HIDP_SESSION_RUNNING,
 };
 
@@ -156,6 +158,7 @@
 	unsigned long idle_to;
 
 	/* device management */
+	struct work_struct dev_init;
 	struct input_dev *input;
 	struct hid_device *hid;
 	struct timer_list timer;
@@ -177,10 +180,13 @@
 
 	/* Used in hidp_output_raw_report() */
 	int output_report_success; /* boolean */
+
+	/* temporary input buffer */
+	u8 input_buf[HID_MAX_BUFFER_SIZE];
 };
 
 /* HIDP init defines */
-extern int __init hidp_init_sockets(void);
-extern void __exit hidp_cleanup_sockets(void);
+int __init hidp_init_sockets(void);
+void __exit hidp_cleanup_sockets(void);
 
 #endif /* __HIDP_H */