[Bug 218416] hci0: command 0xfc05 tx timeout in kernel 6.7.1

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=218416

--- Comment #35 from Priit O. (priit@ww.ee) ---
And yes, it is regression. also it does not work with kernel 6.6 (LTS).
However it does work perfectly well with kernel 6.1.92.

Linux Zen 6.1.92-1-MANJARO #1 SMP PREEMPT_DYNAMIC Mon May 27 03:37:00 UTC 2024
x86_64 GNU/Linux

$ dmesg | grep -i bluetooth
[    5.621856] Bluetooth: Core ver 2.22
[    5.621877] NET: Registered PF_BLUETOOTH protocol family
[    5.621878] Bluetooth: HCI device and connection manager initialized
[    5.621881] Bluetooth: HCI socket layer initialized
[    5.621883] Bluetooth: L2CAP socket layer initialized
[    5.621887] Bluetooth: SCO socket layer initialized
[    5.659250] Bluetooth: hci0: Bootloader revision 0.3 build 0 week 24 2017
[    5.661255] Bluetooth: hci0: Device revision is 1
[    5.661259] Bluetooth: hci0: Secure boot is enabled
[    5.661260] Bluetooth: hci0: OTP lock is enabled
[    5.661262] Bluetooth: hci0: API lock is enabled
[    5.661263] Bluetooth: hci0: Debug lock is disabled
[    5.661264] Bluetooth: hci0: Minimum firmware build 1 week 10 2014
[    5.663789] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi
[    5.663805] Bluetooth: hci0: Boot Address: 0x24800
[    5.663807] Bluetooth: hci0: Firmware Version: 132-3.24
[    6.464952] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    6.464954] Bluetooth: BNEP filters: protocol multicast
[    6.464957] Bluetooth: BNEP socket layer initialized
[    7.025995] Bluetooth: hci0: Waiting for firmware download to complete
[    7.026211] Bluetooth: hci0: Firmware loaded in 1330487 usecs
[    7.026245] Bluetooth: hci0: Waiting for device to boot
[    7.041215] Bluetooth: hci0: Device booted in 14630 usecs
[    7.041217] Bluetooth: hci0: Malformed MSFT vendor event: 0x02
[    7.041527] Bluetooth: hci0: Found Intel DDC parameters:
intel/ibt-20-1-3.ddc
[    7.047218] Bluetooth: hci0: Applying Intel DDC parameters completed
[    7.050221] Bluetooth: hci0: Firmware revision 0.3 build 132 week 3 2024
[    7.217324] Bluetooth: MGMT ver 1.22
[   18.841731] Bluetooth: RFCOMM TTY layer initialized
[   18.841737] Bluetooth: RFCOMM socket layer initialized
[   18.841740] Bluetooth: RFCOMM ver 1.11

sorry, but I have no time or will to install and test with every non-supported
kernel versions inbetween 6.1 and 6.6 to see where the error came back in.

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