diff options
| author | John Youn <John.Youn@synopsys.com> | 2015-12-22 12:23:20 -0800 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-12-22 21:58:26 -0600 |
| commit | d9261898a4b2c143c28568dc686a1becfc637a99 (patch) | |
| tree | 36926864944efeff0392a0005a452c7336579f69 | |
| parent | 746bfe63bba37ad55956b7377c9af494e7e28929 (diff) | |
| download | linux-d9261898a4b2c143c28568dc686a1becfc637a99.tar.gz | |
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: 04c03d10e507 ("usb: dwc3: gadget: handle request->zero")
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 64b2a8303d33..af023a81a0b0 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); |