Skip to content
Commit 3019a9d3 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

Bluetooth: qca: fix invalid device address check

commit 32868e12

 upstream.

Qualcomm Bluetooth controllers may not have been provisioned with a
valid device address and instead end up using the default address
00:00:00:00:5a:ad.

This was previously believed to be due to lack of persistent storage for
the address but it may also be due to integrators opting to not use the
on-chip OTP memory and instead store the address elsewhere (e.g. in
storage managed by secure world firmware).

According to Qualcomm, at least WCN6750, WCN6855 and WCN7850 have
on-chip OTP storage for the address.

As the device type alone cannot be used to determine when the address is
valid, instead read back the address during setup() and only set the
HCI_QUIRK_USE_BDADDR_PROPERTY flag when needed.

This specifically makes sure that controllers that have been provisioned
with an address do not start as unconfigured.

Reported-by: default avatarJanaki Ramaiah Thota <quic_janathot@quicinc.com>
Link: https://lore.kernel.org/r/124a7d54-5a18-4be7-9a76-a12017f6cce5@quicinc.com/
Fixes: 5971752d ("Bluetooth: hci_qca: Set HCI_QUIRK_USE_BDADDR_PROPERTY for wcn3990")
Fixes: e668eb1e ("Bluetooth: hci_core: Don't stop BT if the BD address missing in dts")
Fixes: 6945795b

 ("Bluetooth: fix use-bdaddr-property quirk")
Cc: stable@vger.kernel.org	# 6.5
Cc: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: default avatarJohan Hovold <johan+linaro@kernel.org>
Reported-by: default avatarJanaki Ramaiah Thota <quic_janathot@quicinc.com>
Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent cc6f5aa1
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment