Hi Thinh,
On Sat, Aug 21, 2021 at 02:57:07AM +0000, Thinh Nguyen wrote:
> I took a look at 24f779dac8f3 ("usb: gadget: f_uac2/u_audio: add
> feedback endpoint support") that Ferry reported the issue from
> bisection. I see at least a couple problems in the new UAC2 changes.
>
> 1) usb_ep_dequeue() is asynchronous. Don't free requests before the
> controller driver give them back.
>
> 2) Did you test with SuperSpeed? I don't see companion descriptor.
We caught this too when testing f_uac2 in SuperSpeed mode. I can
prepare a patch.
Thanks,
Jack
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