| Message ID | 1527681676-44003-1-git-send-email-prime.zeng@hisilicon.com |
|---|---|
| State | New |
| Headers | show |
| Series | usb: dwc2: gadget: fix missing process for isoc descriptor dma mode | expand |
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index f0d9ccf..48e3a48c 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -1365,6 +1365,9 @@ static int dwc2_hsotg_ep_queue(struct usb_ep *ep, struct usb_request *req, return 0; } + if (using_desc_dma(hs)) + return 0; + /* Update current frame number value. */ hs->frame_number = dwc2_hsotg_read_frameno(hs); while (dwc2_gadget_target_frame_elapsed(hs_ep)) {
If it's the first request to queue, and we are using descriptor dma mode for isoc transfer, we only need to add the request to the queue, and it will be processed in the future nak interrupt handler. Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com> --- drivers/usb/dwc2/gadget.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html