Re: git: 24ae172a5035 - main - ng_ubt(4): do not attach Realtek 87XX/88XX adaptors in bootloader mode.

On 07/11/2024 01:31, Vladimir Kondratyev wrote:
> The branch main has been updated by wulf:
> 
> URL: https://cgit.FreeBSD.org/src/commit/?id=24ae172a50352ad4fd22989477f29ecca5aed6e3
> 
> commit 24ae172a50352ad4fd22989477f29ecca5aed6e3
> Author:     Vladimir Kondratyev <wulf@FreeBSD.org>
> AuthorDate: 2024-11-06 23:28:11 +0000
> Commit:     Vladimir Kondratyev <wulf@FreeBSD.org>
> CommitDate: 2024-11-06 23:28:11 +0000
> 
>      ng_ubt(4): do not attach Realtek 87XX/88XX adaptors in bootloader mode.

Perhaps this change deserves an UPDATING entry?

Today I upgraded only to find out that my bluetooth related things stopped 
working.  It turned out that ng_ubt didn't attach to my USB bluetooth adapter.
Only then I discovered this change, installed the firmware package, etc.

As strange as it may seem, previously my adapter worked without uploading any 
extra firmware.

Some data points, just in case:
   idVendor = 0x0b05
   idProduct = 0x190e
   bcdDevice = 0x0200
   iManufacturer = 0x0001  <Realtek>
   iProduct = 0x0002  <ASUS USB-BT500>

rtlbt_is_realtek: found USB Realtek
rtlbt_dump_version: hci_version    0x0a
rtlbt_dump_version: hci_revision   0x000b
rtlbt_dump_version: lmp_version    0x0a
rtlbt_dump_version: lmp_subversion 0x8761
main: loading firmware /usr/local/share/rtlbt-firmware/rtl8761bu_fw.bin
main: loading config /usr/local/share/rtlbt-firmware/rtl8761bu_config.bin
main: Firmware download complete
rtlbt_dump_version: hci_version    0x0a
rtlbt_dump_version: hci_revision   0xdfc6
rtlbt_dump_version: lmp_version    0x0a
rtlbt_dump_version: lmp_subversion 0xd922
main: Firmware download is successful!

>      Attempt to initialize FreeBSD bluetooth stack while such a device is in
>      bootloader mode locks the adapter hardly so it requires power on/off
>      cycle to restore.
>      
>      This change blocks ng_ubt attachment unless operational firmware is
>      loaded thus preventing the lock up.
>      
>      Sponsored by:   Future Crew LLC
>      MFC after:      1 month
>      Differential Revision:  https://reviews.freebsd.org/D46738

-- 
Andriy Gapon