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Commit d9261898 authored by John Youn's avatar John Youn Committed by Felipe Balbi
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usb: dwc3: gadget: don't send extra ZLP 



If the request->length is zero, a ZLP should already be sent due to that
and another ZLP is not needed to terminate the transfer.

Fixes: 04c03d10 ("usb: dwc3: gadget: handle request->zero")
Signed-off-by: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 746bfe63

drivers/usb/dwc3/gadget.c

+2 −1
Original line number Diff line number Diff line
@@ -1203,7 +1203,8 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, 
	 * extra usb_request ourselves so that it gets handled the same way as

	 * any other request.

	 */

	if (ret == 0 && request->zero && (request->length % ep->maxpacket == 0))

	if (ret == 0 && request->zero && request->length &&

	    (request->length % ep->maxpacket == 0))

		ret = __dwc3_gadget_ep_queue_zlp(dwc, dep);



	spin_unlock_irqrestore(&dwc->lock, flags);