On Tuesday 25 June 2013 13:20:33 Sarah Sharp wrote:
> I wonder if these webcams need a reset endpoint request sent to them,
> even though their endpoints aren't halted. The xHCI driver doesn't
> currently handle that very well. The device receives the reset endpoint
> request, but the xHCI command to reset the endpoints gets rejected by
> the hardware because the endpoint contexts are not in the halted state.
> Then the toggles are different in the host and device, and the device no
> longer sends data. When the camera app is closed, the alternate
> interface setting changes, which means the toggles get reset.
How does that cause a control transfer?
Regards
Oliver
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