--- zzzz-none-000/linux-3.10.107/include/net/bluetooth/rfcomm.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/net/bluetooth/rfcomm.h	2021-02-04 17:41:59.000000000 +0000
@@ -24,8 +24,6 @@
 #ifndef __RFCOMM_H
 #define __RFCOMM_H
 
-#define RFCOMM_PSM 3
-
 #define RFCOMM_CONN_TIMEOUT (HZ * 30)
 #define RFCOMM_DISC_TIMEOUT (HZ * 20)
 #define RFCOMM_AUTH_TIMEOUT (HZ * 25)
@@ -173,7 +171,7 @@
 	struct sk_buff_head   tx_queue;
 	struct timer_list     timer;
 
-	spinlock_t    lock;
+	struct mutex  lock;
 	unsigned long state;
 	unsigned long flags;
 	atomic_t      refcnt;
@@ -238,12 +236,14 @@
 								u8 channel);
 int  rfcomm_dlc_close(struct rfcomm_dlc *d, int reason);
 int  rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb);
+void rfcomm_dlc_send_noerror(struct rfcomm_dlc *d, struct sk_buff *skb);
 int  rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig);
 int  rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig);
 void rfcomm_dlc_accept(struct rfcomm_dlc *d);
+struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel);
 
-#define rfcomm_dlc_lock(d)     spin_lock(&d->lock)
-#define rfcomm_dlc_unlock(d)   spin_unlock(&d->lock)
+#define rfcomm_dlc_lock(d)     mutex_lock(&d->lock)
+#define rfcomm_dlc_unlock(d)   mutex_unlock(&d->lock)
 
 static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d)
 {
@@ -256,8 +256,8 @@
 		rfcomm_dlc_free(d);
 }
 
-extern void __rfcomm_dlc_throttle(struct rfcomm_dlc *d);
-extern void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d);
+void __rfcomm_dlc_throttle(struct rfcomm_dlc *d);
+void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d);
 
 static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d)
 {
@@ -295,11 +295,14 @@
 #define RFCOMM_LM_TRUSTED	0x0008
 #define RFCOMM_LM_RELIABLE	0x0010
 #define RFCOMM_LM_SECURE	0x0020
+#define RFCOMM_LM_FIPS		0x0040
 
 #define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk)
 
 struct rfcomm_pinfo {
 	struct bt_sock bt;
+	bdaddr_t src;
+	bdaddr_t dst;
 	struct rfcomm_dlc   *dlc;
 	u8     channel;
 	u8     sec_level;
@@ -321,11 +324,16 @@
 #define RFCOMMGETDEVINFO	_IOR('R', 211, int)
 #define RFCOMMSTEALDLC		_IOW('R', 220, int)
 
+/* rfcomm_dev.flags bit definitions */
 #define RFCOMM_REUSE_DLC      0
 #define RFCOMM_RELEASE_ONHUP  1
 #define RFCOMM_HANGUP_NOW     2
 #define RFCOMM_TTY_ATTACHED   3
-#define RFCOMM_TTY_RELEASED   4
+#define RFCOMM_DEFUNCT_BIT4   4	  /* don't reuse this bit - userspace visible */
+
+/* rfcomm_dev.status bit definitions */
+#define RFCOMM_DEV_RELEASED   0
+#define RFCOMM_TTY_OWNED      1
 
 struct rfcomm_dev_req {
 	s16      dev_id;