Bluetooth: Fix missing retransmission action with RR(P=1)

The Bluetooth SIG Profile Tuning Suite Software uses the CSA1 spec
to run the L2CAP tests. The new 3.0 spec has a missing
Retransmit-I-Frames action when the Remote side is Busy.
We still start the retransmission timer if Remote is Busy and unacked
frames > 0. We do everything we did before this change plus the
Retransmission of I-frames.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Reviewed-by: João Paulo Rechi Vita <jprvita@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 8c9f577dd46d..7c2273732909 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -3405,8 +3405,8 @@ static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk)
                 pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
         }
 
-        if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY && pi->unacked_frames > 0)
-                __mod_retrans_timer();
+        if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY)
+                l2cap_retransmit_frames(sk);
 
         spin_lock_bh(&pi->send_lock);
         l2cap_ertm_send(sk);