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Bluetooth: Enable C2H ACL data flow control by default #20208

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Bluetooth: Enable C2H ACL data flow control by default #20208

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c3cf102
bluetooth: Enable C2H ACL data fc to avoid potential deadlocks
PavelVPV Feb 5, 2025
6af8b57
docs: release-notes: Fix fixed section in Bluetooth LE
PavelVPV Feb 17, 2025
1067af7
docs: release-notes: Add note about enabled C2H ACL FC by default
PavelVPV Feb 18, 2025
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8 changes: 6 additions & 2 deletions doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,12 @@ Amazon Sidewalk
Bluetooth® LE
-------------

* Fixed an issue where a flash operation executed on the system workqueue might result in ``-ETIMEDOUT``, if there is an active Bluetooth LE connection.
* Fixed an issue where Bluetooth applications built with the ``nordic-bt-rpc`` snippet (in the :ref:`ble_rpc` configuration) did not work on the nRF54H20 devices due to incorrect memory mapping.
* Fixed:

* An issue where a flash operation executed on the system workqueue might result in ``-ETIMEDOUT``, if there is an active Bluetooth LE connection.
* An issue where Bluetooth applications built with the ``nordic-bt-rpc`` snippet (in the :ref:`ble_rpc` configuration) did not work on the nRF54H20 devices due to incorrect memory mapping.

* Updated the :kconfig:option:`CONFIG_BT_HCI_ACL_FLOW_CONTROL` Kconfig option to be enabled by default to mitigate the risk of potential deadlocks in the Bluetooth Host.

Bluetooth Mesh
--------------
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8 changes: 8 additions & 0 deletions subsys/bluetooth/Kconfig
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Expand Up @@ -45,6 +45,14 @@ config BT_LONG_WQ_STACK_SIZE
default 1800 if (BT_ECC || BT_GATT_CACHING)
default 1024

if BT_CONN

config BT_HCI_ACL_FLOW_CONTROL
# Enabling this option by default for now to avoid potential deadlocks. See NCSDK-30959.
default y

endif # BT_CONN

rsource "controller/Kconfig"
rsource "host_extensions/Kconfig"

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