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List:       linux-kernel
Subject:    Re: 5.16.0-rc7+ Bluetooth error
From:       Luiz Augusto von Dentz <luiz.dentz () gmail ! com>
Date:       2021-12-31 19:53:11
Message-ID: CABBYNZLc9Pj=LYhL5MUUVkhenHb_xfT59aDDkdk14k7+ojeUzw () mail ! gmail ! com
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Hi Chris,

On Fri, Dec 31, 2021 at 2:35 AM Chris Clayton <chris2553@googlemail.com> wrote:
> 
> On 30/12/2021 09:21, Chris Clayton wrote:
> > Hi,
> > 
> > I pulled the latest changes into my clone of Linus' tree and built and installed \
> > the kernel. (git describe gives v5.16-rc7-9-ge7c124bd0463). I'm seeing errors \
> > reported by the bluetooth subsystem that i don't see in 5.15.12 or 5.10.89 
> > The problem seems to occur twice during system startup and on each occasion I see \
> > a batch of identical error messages: 
> > [    3.980822] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.982812] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.984812] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.986608] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.987621] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.988606] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > [    3.989650] Bluetooth: hci0: Failed to read codec capabilities (-56)
> > 
> 
> Sorry, I should have said that despite the above errors, my bluetooth devices still \
> work fine.

Would be great to have the HCI trace (btmon).

@Kiran K Is this to be expected?

> 
> > A full dmesg log is attached. I've also attached Two files containing the output \
> > from "lsusb -v" run on 5.10.89 and 5.16-rc7.
> > 
> > Please let me know if I can provide any other diagnostic information or test any \
> > patches. You'll need to cc me on replies because I'm not subscribed to LKML or \
> > linux-bluetooth. 
> > Thanks



-- 
Luiz Augusto von Dentz


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