[Bug 215167] Bluetooth: hci0: command 0xfc05 tx timeout

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https://bugzilla.kernel.org/show_bug.cgi?id=215167

Arjan Veenstra (kernel@xxxxxxxx) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |kernel@xxxxxxxx

--- Comment #54 from Arjan Veenstra (kernel@xxxxxxxx) ---
(In reply to matoro from comment #44)
> 6.0.12 is good
> 6.0.15 is bad
> 6.1.1 is bad
> 
> Hardware:
> 07:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
>       Subsystem: Intel Corporation Wi-Fi 6 AX200NGW

I have the same controller on an Asus B550M-A (Wi-Fi):
09:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)

And I got the same error on kernel 6.5:
[   10.644458] Bluetooth: hci0: command 0xfc05 tx timeout
[   10.644685] Bluetooth: hci0: Reading Intel version command failed (-110)

6.4.14 is good
6.5.0 is bad
6.5.1 is bad

However, I checked back and for me kernel 6.0.14 and 6.0.15 both work, which 
made me suspect a firmware difference. So I grabbed to latest version from 
linux-firmware.git and tried again. Now 6.5.1 works again. So it seems the
issue
is specific to certain firmware / kernel combinations.

My previous firmware:
[    8.528961] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi
[    8.528974] Bluetooth: hci0: Boot Address: 0x24800
[    8.528976] Bluetooth: hci0: Firmware Version: 126-5.22
...
[   14.992585] Bluetooth: hci0: Found Intel DDC parameters:
intel/ibt-20-1-3.ddc
[   15.001435] Bluetooth: hci0: Applying Intel DDC parameters completed
[   15.006447] Bluetooth: hci0: Firmware revision 0.3 build 126 week 5 2022

The new firmware:
[    9.707218] Bluetooth: hci0: Found device firmware: intel/ibt-20-1-3.sfi
[    9.707231] Bluetooth: hci0: Boot Address: 0x24800
[    9.707233] Bluetooth: hci0: Firmware Version: 255-255.255
...
[   16.179006] Bluetooth: hci0: Found Intel DDC parameters:
intel/ibt-20-1-3.ddc
[   16.187931] Bluetooth: hci0: Applying Intel DDC parameters completed
[   16.192850] Bluetooth: hci0: Firmware revision 0.3 build 249 week 27 2023

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