Bluetooth: add quirk for broken address properties
authorJohan Hovold <johan+linaro@kernel.org>
Wed, 20 Mar 2024 07:55:53 +0000 (08:55 +0100)
committerLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Fri, 29 Mar 2024 13:48:37 +0000 (09:48 -0400)
commit39646f29b100566451d37abc4cc8cdd583756dfe
treec09897f5cbf83c1a2a5aaca5b7646a9a09a73317
parente12e28009e584c8f8363439f6a928ec86278a106
Bluetooth: add quirk for broken address properties

Some Bluetooth controllers lack persistent storage for the device
address and instead one can be provided by the boot firmware using the
'local-bd-address' devicetree property.

The Bluetooth devicetree bindings clearly states that the address should
be specified in little-endian order, but due to a long-standing bug in
the Qualcomm driver which reversed the address some boot firmware has
been providing the address in big-endian order instead.

Add a new quirk that can be set on platforms with broken firmware and
use it to reverse the address when parsing the property so that the
underlying driver bug can be fixed.

Fixes: 5c0a1001c8be ("Bluetooth: hci_qca: Add helper to set device address")
Cc: stable@vger.kernel.org # 5.1
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
include/net/bluetooth/hci.h
net/bluetooth/hci_sync.c