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.
Signed-off-by: John Youn <[email protected]> --- drivers/usb/dwc3/gadget.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 64b2a83..af023a8 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -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); -- 2.6.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
