[PATCH 0/1][SRU][OEM-5.14/OEM-5.17/Jammy/Unstable] WCN6856 BT keep in OFF state after coldboot system

[You-Sheng Yang]

BugLink: https://bugs.launchpad.net/bugs/1967067

[Impact]

WCN6856 BT keep in OFF state after coldboot system.

[Fix]

Mainline commit 599ece4f8f07 ("Bluetooth: btusb: Improve stability for
QCA devices") added a 100ms delay for the underlying hw to apply
downloaded firmware.

[Test Case]

This can be reproduced and therefore verified by checkbox poweroff
stress test:

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

[Where problems could occur]

Unlikely to have side effect so far except slowing down boot process for
a tiny moment.

[Other Info]

While this is only in the v5.18 merge window, all the kernels in use are
affected and nominated here.

Zijun Hu (1):
  Bluetooth: btusb: Improve stability for QCA devices

 drivers/bluetooth/btusb.c | 8 ++++++++
 1 file changed, 8 insertions(+)

-- 
2.34.1