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
If we don't assign a TRB to ep0 requests, we won't be able to unmap the request later on resulting in starvation of DMA resources. Fixes: 4a71fcb8ac5f ("usb: dwc3: gadget: only unmap requests from DMA if mapped") Reported-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Tested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>