[PATCH v2 00/12] Bluetooth: btusb/btqca/hci_sync: Clean up btusb and fix several bugs

[Zijun Hu]

This series cleans up btusb in preparation for adding a new chip,
QCC2072, and fixes several pre-existing bugs found along the way.

Bug fixes:
- qca_set_bdaddr() waited for HCI_EV_VENDOR, but the controller replies
  with a Command Complete event.
- btusb_set_bdaddr_wcn6855() sent the BD_ADDR without byte-swapping it.
- btusb QCA populated devcoredump fields on devices where devcoredump is
  not enabled.
- BTUSB_IGNORE is a bitmask and must be tested with '&', not '=='.

Cleanups:
- Add __hci_reset_sync() helper and use it in qca_send_reset() and
  btusb_shutdown_qca() to drop open-coded HCI reset boilerplate.
- Simplify hci_reset_sync() and log an error in hci_cc_reset() on a
  non-zero reset status.
- Record the matched usb_device_id in struct btusb_data and move qca_dump
  into a dedicated struct btqca_data.
- Reduce a redundant assignment in btusb_probe().

Signed-off-by: Zijun Hu <zijun.hu@xxxxxxxxxxxxxxxx>
---
Changes in v2:
- Reorder the series so each helper is introduced before its users and
  related changes are grouped together.
- btqca: reword "Fix qca_set_bdaddr()", add the btmon (WCN7850) trace,
  and add Bartosz's Reviewed-by.
- btusb: add the btmon (WCN6855) trace to the BD_ADDR byte-order fix.
- btusb: rename and reword the devcoredump fix.
- hci_sync: simplify __hci_reset_sync() to return __hci_cmd_sync_status()
  directly; rename the patch to "Introduce __hci_reset_sync()".
- hci_sync: "Simplify hci_reset_sync()" now returns the status directly;
  drop the separate "Fix return value of hci_reset_sync()" patch.
- btqca: replace "Fix undetected error HCI status in qca_send_reset()"
  with "Simplify qca_send_reset() by using __hci_reset_sync()" (cleanup,
  not a fix; dropped the Fixes tag).
- btusb: reword "Simplify btusb_shutdown_qca()".
- btusb: rename "Initialize @priv_size at declaration" -> "Reduce a
  redundant assignment in btusb_probe()".
- New patch: "hci_event: Log error for HCI reset status error in
  hci_cc_reset()".
- Drop "Move struct btusb_data and macros into btusb.h"; deferred to a
  follow-up series.
- Link to v1: https://lore.kernel.org/r/20260622-bt_bugfix-v1-0-11f936d84e72@xxxxxxxxxxxxxxxx

---
Zijun Hu (12):
      Bluetooth: btqca: Fix qca_set_bdaddr() waiting for wrong HCI event
      Bluetooth: btusb: Fix BD_ADDR byte order in btusb_set_bdaddr_wcn6855()
      Bluetooth: btusb: Record matched usb_device_id into btusb_data
      Bluetooth: btusb: QCA: Fix populating devcoredump fields on unenabled devices
      Bluetooth: btusb: QCA: move qca_dump out of struct btusb_data
      Bluetooth: hci_sync: Introduce __hci_reset_sync() for device drivers
      Bluetooth: btqca: Simplify qca_send_reset() by using __hci_reset_sync()
      Bluetooth: btusb: Simplify btusb_shutdown_qca() by using __hci_reset_sync()
      Bluetooth: hci_sync: Simplify hci_reset_sync()
      Bluetooth: hci_event: Log error for HCI reset status error in hci_cc_reset()
      Bluetooth: btusb: Reduce a redundant assignment in btusb_probe()
      Bluetooth: btusb: Use & instead of == to test bitflag BTUSB_IGNORE

 drivers/bluetooth/btqca.c        | 25 ++----------
 drivers/bluetooth/btusb.c        | 86 +++++++++++++++++++++++-----------------
 include/net/bluetooth/hci_sync.h |  1 +
 net/bluetooth/hci_event.c        |  5 ++-
 net/bluetooth/hci_sync.c         | 16 ++++----
 5 files changed, 66 insertions(+), 67 deletions(-)
---
base-commit: cb20f6afc25b2b54c0fec61b45ac0ec9eb875d59
change-id: 20260622-bt_bugfix-fbb216ca1ff9

Best regards,
-- 
Zijun Hu <zijun.hu@xxxxxxxxxxxxxxxx>