[PATCH 0/2][OEM-5.13/OEM-5.14/Impish/Jammy] Fix MT7921 failed to start WM firmware

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/1954300

[Impact]

MT7921 might fail at device probe at boot:

mt7921e 0000:03:00.0: WM Firmware Version: ____010000, Build Time:
20211014150922
IPv6: ADDRCONF(NETDEV_CHANGE): enp2s0: link becomes ready
mt7921e 0000:03:00.0: Message 80000002 (seq 9) timeout
mt7921e 0000:03:00.0: Failed to start WM firmware
mt7921e: probe of 0000:03:00.0 failed with error -110

[Fix]

Kernel fixes:
* 995d948cf2e4 ("Bluetooth: btusb: Return error code when getting patch status
  failed")
* 00c0ee9850b7 ("Bluetooth: btusb: Handle download_firmware failure cases")

And firmware:
* 948cad200e94 ("linux-firmware: update frimware for mediatek bluetooth
  chip (MT7921)")

[Test Case]

Run checkbox reboot stress tests to try trigger this issue:

  $ checkbox-cli run com.canonical.certification::stress/reboot

[Where problems could occur]

This imports fixes requiring both kernel driver and proprietary firmware
updates, the firmware part might cause instability or so.

[Other Info]

These patches are currently in bluetooth/bluetooth-next.git, and therefore
not yet available to any Ubuntu kernel. Nominated for all >= 5.13.

Mark Chen (2):
  UBUNTU: SAUCE: Bluetooth: btusb: Handle download_firmware failure
    cases
  UBUNTU: SAUCE: Bluetooth: btusb: Return error code when getting patch
    status failed

 drivers/bluetooth/btusb.c | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.32.0