linux-kernel - Re: bluetooth issues since kernel 6.4 - not discovering other bt devices

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Date:   Tue, 3 Oct 2023 06:46:58 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Erik Dobák <erik.dobak@...il.com>,
        Linux Stable <stable@...r.kernel.org>,
        Linux Bluetooth <linux-bluetooth@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Linux Mediatek <linux-mediatek@...ts.infradead.org>,
        Linux Regressions <regressions@...ts.linux.dev>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Tomasz Moń <tomasz.mon@...dicsemi.no>
Subject: Re: bluetooth issues since kernel 6.4 - not discovering other bt
 devices - /linux/drivers/bluetooth/btusb.c

On Sun, Oct 01, 2023 at 07:47:54AM +0200, Erik Dobák wrote:
> Hello!
> 
> I bought a new laptop fujitsu life book and everything is going fine
> on artix just the bt makes trouble:
> 
> /var/log/error.log
> Sep 30 18:43:48 nexus bluetoothd[2266]:
> src/adapter.c:reset_adv_monitors_complete() Failed to reset Adv
> Monitors: Failed (0x03)
> Sep 30 18:43:48 nexus bluetoothd[2266]: Failed to clear UUIDs: Failed (0x03)
> Sep 30 18:43:48 nexus bluetoothd[2266]: Failed to add UUID: Failed (0x03)
> Sep 30 18:43:48 nexus bluetoothd[2266]: Failed to add UUID: Failed (0x03)
> 
> i searched a bit the webs and found a new commit at kernel org that
> does do the trouble:
> https://bugs.archlinux.org/task/78980
> 
> follow the linkeys inside the commits there or read this one:
> 
> ---------------before------------------------------------
> /* interface numbers are hardcoded in the spec */
>         if (intf->cur_altsetting->desc.bInterfaceNumber != 0) {
>                 if (!(id->driver_info & BTUSB_IFNUM_2))
>                         return -ENODEV;
>                 if (intf->cur_altsetting->desc.bInterfaceNumber != 2)
>                         return -ENODEV;
>         }
> -----------after----------------------------------------------------
> if ((id->driver_info & BTUSB_IFNUM_2) &&
>     (intf->cur_altsetting->desc.bInterfaceNumber != 0) &&
>     (intf->cur_altsetting->desc.bInterfaceNumber != 2))
> return -ENODEV;
> --------------------------------------------------------
> 
> the dude just hooked up 3 conditions in a row with && where before it
> was 2 conditions in 1 condition. + the comment was removed.
> 
> 

Try latest mainline first (currently v6.6-rc4). Because you have to
compile your own kernel, please refer to
Documentation/admin-guide/quickly-build-trimmed-linux.rst if you don't know how to do the compilation.

Also, don't top-post when replying; reply inline with appropriate context
instead.

Thanks.

-- 
An old man doll... just what I always wanted! - Clara

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