bluetooth: classic: HFP_AG: Fix early SCO connection req sending
When creating the audio connection, the SCO connection request will be
sent before the response "OK" to AT command "AT+BCS" is issued.
It causes the issue that the HFP HF cannot response the SCO connection
request with the correct codec. Then the SCO connection cannot be
established properly.
Put all processing into the same context, thus avoiding non-sequential
execution caused by the different priorities of different threads.
Add a flag `BT_HFP_AG_AT_PROCESS` to flag the AT command is being
processed.
When the flag `BT_HFP_AG_AT_PROCESS` is set, put the pending
executions into temp list `tx_submit_pending`. After the AT response
`OK` or `ERROR` has been sent, move the pending executions from
`tx_submit_pending` to `tx_pending`.
Signed-off-by: Lyle Zhu <lyle.zhu@nxp.com>
3 files changed
