This is a note to let you know that I've just added the patch titled
Bluetooth: add quirk for broken address properties
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bluetooth-add-quirk-for-broken-address-properties.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 39646f29b100566451d37abc4cc8cdd583756dfe Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Wed, 20 Mar 2024 08:55:53 +0100
Subject: Bluetooth: add quirk for broken address properties
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
commit 39646f29b100566451d37abc4cc8cdd583756dfe upstream.
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@xxxxxxxxxxxxxxx # 5.1
Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/net/bluetooth/hci.h | 9 +++++++++
net/bluetooth/hci_sync.c | 5 ++++-
2 files changed, 13 insertions(+), 1 deletion(-)
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -175,6 +175,15 @@ enum {
*/
HCI_QUIRK_USE_BDADDR_PROPERTY,
+ /* When this quirk is set, the Bluetooth Device Address provided by
+ * the 'local-bd-address' fwnode property is incorrectly specified in
+ * big-endian order.
+ *
+ * This quirk can be set before hci_register_dev is called or
+ * during the hdev->setup vendor callback.
+ */
+ HCI_QUIRK_BDADDR_PROPERTY_BROKEN,
+
/* When this quirk is set, the duplicate filtering during
* scanning is based on Bluetooth devices addresses. To allow
* RSSI based updates, restart scanning if needed.
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -3293,7 +3293,10 @@ static void hci_dev_get_bd_addr_from_pro
if (ret < 0 || !bacmp(&ba, BDADDR_ANY))
return;
- bacpy(&hdev->public_addr, &ba);
+ if (test_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks))
+ baswap(&hdev->public_addr, &ba);
+ else
+ bacpy(&hdev->public_addr, &ba);
}
struct hci_init_stage {
Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are
queue-6.1/bluetooth-qca-fix-device-address-endianness.patch
queue-6.1/arm64-dts-qcom-sc7180-trogdor-mark-bluetooth-address-as-broken.patch
queue-6.1/revert-bluetooth-hci_qca-set-bda-quirk-bit-if-fwnode-exists-in-dt.patch
queue-6.1/bluetooth-add-quirk-for-broken-address-properties.patch
