Re: [PATCH v3] usb: dwc3: gadget: Prevent EP resource conflicts during StartTransfer

[Thinh Nguyen]

On Thu, Oct 08, 2026, Selvarasu Ganesan wrote:
> 
> > The End Transfer command not completing is also a separate issue. I
> > asked you to check whether the command would eventually complete with
> > the additional code, and it appears it doesn't.
>   We have confirmed that the completion event is never seen, once the 
> timeout occurs for end transfer. It appears the command is indeed 
> hanging in the hardware, as you suspected.
> 
> >
> > Can you provide some more info on your setup:
> >   * IP and version
> >   * connected speed
> >   * endpoint direction (is it always OUT?)
> >   * Is there any active transfer
> >   * tracepoints


> * IP and version : 0xc120:   0x33313130

and version (0xc1a0)?

> * connected speed : HS mode
> * endpoint direction (is it always OUT?) : Yes its always OUT
> * Is there any active transfer : No, There is evidences from the log to 
> say there is a active transfer.

The host may have sent data that would not appear in the log until
completion. Are there any active transfer on other endpoints?

> * tracepoints: There is no dwc3 traces for this issue as of now due to 
> its low reproduction rate in the customer's setup.
> 

I think you may need to file a case with our support team and provide
additional debug info such as scan dump to investigate this further.

Thanks,
Thinh