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Thinh Nguyen authored
The current ZLP handling for ep0 requests is only for control IN requests. For OUT direction, DWC3 needs to check and setup for MPS alignment. Usually, control OUT requests can indicate its transfer size via the wLength field of the control message. So usb_request->zero is usually not needed for OUT direction. To handle ZLP OUT for control endpoint, make sure the TRB is MPS size. Cc: stable@vger.kernel.org Fixes: c7fcdeb2 ("usb: dwc3: ep0: simplify EP0 state machine") Fixes: d6e5a549 ("usb: dwc3: simplify ZLP handling") Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Signed-off-by: Felipe Balbi <balbi@kernel.org>
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