RE: [PATCH] usb: dwc3: gadget: issue a stop command for ISOC endpoint

[Felipe Balbi]

Hi,

"Zengtao (B)" <prime.zeng@xxxxxxxxxxxxx> writes:
>>-----Original Message-----
>>From: Felipe Balbi [mailto:felipe.balbi@xxxxxxxxxxxxxxx]
>>Sent: Monday, January 21, 2019 4:17 PM
>>To: Zengtao (B) <prime.zeng@xxxxxxxxxxxxx>
>>Cc: Zengtao (B) <prime.zeng@xxxxxxxxxxxxx>; Greg Kroah-Hartman
>><gregkh@xxxxxxxxxxxxxxxxxxx>; linux-usb@xxxxxxxxxxxxxxx;
>>linux-kernel@xxxxxxxxxxxxxxx
>>Subject: Re: [PATCH] usb: dwc3: gadget: issue a stop command for ISOC
>>endpoint
>>
>>* PGP Signed by an unknown key
>>
>>
>>Hi,
>>
>>Zeng Tao <prime.zeng@xxxxxxxxxxxxx> writes:
>>> For ISOC transfers, if there is no available data for a period, we
>>> need to stop the transfer by issue a stop command, otherwise, all the
>>> upcoming transfers will started by update transfer command, and will
>>> be dropped with MISS ISOC errors.
>>
>>We, actually, have code to handle missed isoc errors now. Have you tested
>>with that applied? Which kernel are you using? Can you share tracepoints
>>captured with v5.0-rc3?
>>
>
> Not v5.0-rc3, but I tested it based on 4.9 with backported dwc3 driver. And with
> UVC application, it's very easy to reproduce it.

Ok, so it could be that you missed patches while backporting, right? How
can I reproduce this? What do I need? Care to give detailed
instructions?

-- 
balbi

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