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Date: Fri, 5 Apr 2024 10:34:26 +0200
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Subject: Re: [PATCH] [PATCH] Bluetooth: btusb: Add support Mediatek MT7920
To: Mike Lothian <mike@fireburn.co.uk>, peter.tsao@mediatek.com
Cc: aaron.hou@mediatek.com, chris.lu@mediatek.com, deren.Wu@mediatek.com,
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References: <20240304144844.2042-1-peter.tsao@mediatek.com>
 <20240401144424.1714-1-mike@fireburn.co.uk>
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From: "Linux regression tracking (Thorsten Leemhuis)"
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[CCing the regression list, as it should be in the loop for regressions:
https://docs.kernel.org/admin-guide/reporting-regressions.html]

On 01.04.24 17:20, Mike Lothian wrote:
> On Mon, 1 Apr 2024 at 15:44, Mike Lothian <mike@fireburn.co.uk> wrote:
>>
>> I think this patch is causing issues with older firmware
>>
>> Bus 003 Device 002: ID 13d3:3563 IMC Networks Wireless_Device
>>
>> [    0.315064] Bluetooth: Core ver 2.22
>> [    0.315064] NET: Registered PF_BLUETOOTH protocol family
>> [    0.315064] Bluetooth: HCI device and connection manager initialized
>> [    0.315064] Bluetooth: HCI socket layer initialized
>> [    0.315064] Bluetooth: L2CAP socket layer initialized
>> [    0.315064] Bluetooth: SCO socket layer initialized
>> [    4.670811] Bluetooth: RFCOMM TTY layer initialized
>> [    4.671029] Bluetooth: RFCOMM socket layer initialized
>> [    4.671790] Bluetooth: RFCOMM ver 1.11
>> [    4.673416] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
>> [    4.673659] Bluetooth: BNEP filters: protocol multicast
>> [    4.673895] Bluetooth: BNEP socket layer initialized
>> [    4.674125] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
>> [    4.674360] Bluetooth: HIDP socket layer initialized
>> [    5.016365] bluetooth hci0: Direct firmware load for mediatek/BT_RAM_CODE_MT7961_1a_2_hdr.bin failed with error -2
>> [    5.017163] Bluetooth: hci0: Failed to load firmware file (-2)
>> [    5.017557] Bluetooth: hci0: Failed to set up firmware (-2)
>> [    5.018129] Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported.
>>
>> The correct name should be mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin
>>
>> Reverting this patch fixes things
> 
> If it helps, the device ID is 0x7961 and the fw_flavour is 24 or 0x18 in hex

Thanks for the report!

Peter, did you look into this?

Anyway: To be sure the issue doesn't fall through the cracks unnoticed,
I'm adding it to regzbot, the Linux kernel regression tracking bot:

#regzbot report:
https://lore.kernel.org/all/20240401144424.1714-1-mike@fireburn.co.uk/
#regzbot introduced: 1cb63d80fff6c4
#regzbot title: net: Bluetooth: firmware loading problems with older
firmware
#regzbot ignore-activity

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
That page also explains what to do if mails like this annoy you.