diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 6773453..2231937 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -73,7 +73,7 @@
 static void l2cap_send_disconn_req(struct l2cap_conn *conn,
 				struct l2cap_chan *chan, int err);
 
-static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb);
+static int l2cap_ertm_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb);
 
 /* ---- L2CAP channels ---- */
 
@@ -4138,9 +4138,8 @@
 	return 0;
 }
 
-static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb)
+int l2cap_ertm_data_rcv(struct l2cap_chan *chan, struct sk_buff *skb)
 {
-	struct l2cap_chan *chan = l2cap_pi(sk)->chan;
 	u32 control;
 	u16 req_seq;
 	int len, next_tx_seq_offset, req_seq_offset;
@@ -4241,7 +4240,7 @@
 		break;
 
 	case L2CAP_MODE_ERTM:
-		l2cap_ertm_data_rcv(sk, skb);
+		l2cap_ertm_data_rcv(chan, skb);
 
 		goto done;