[BK] Bluetooth fixes for 2.4.21-rc1

[Max Krasnyansky]

Hi Marcelo,

We've got several important BT fixes for 2.4.21.
Please pull from
        bk://linux-bt.bkbits.net/bt-2.4

This will update the following files:

 include/net/bluetooth/rfcomm.h |   10 ++++--
 net/bluetooth/l2cap.c          |    2 -
 net/bluetooth/rfcomm/core.c    |   60 ++++++++++++++++++++++++++++++++++++++---
 net/bluetooth/rfcomm/tty.c     |   23 ++++++++++-----
 4 files changed, 81 insertions(+), 14 deletions(-)

through these ChangeSets:

<[e-mail]> (03/04/26 1.1126.2.3)
   [Bluetooth] Fix race condition in RFCOMM session and dlc scheduler.
   This fixes random RFCOMM freezes reported by a few people.

<[e-mail]> (03/04/26 1.1126.2.2)
   [Bluetooth] Improved RFCOMM TTY buffer management. Don't buffer more data than
   we have credits for.
   Patch from David Woodhouse <[e-mail]>

<[e-mail]> (03/04/23 1.1006.23.2)
   [Bluetooth] Fix L2CAP binding to local address
   
   In the function l2cap_connect_ind() we compare the bounded
   address with the address of an incoming connection, but we
   have to compare it with the local address of the HCI device.

<[e-mail]> (03/03/30 1.1006.23.1)
   [Bluetooth] Respond correctly to RLS packets
   
   This patch adds the recognition and correct responding to the
   RFCOMM RLS packets to fulfill the requirements of the Bluetooth
   specification.

Thanks

Max

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