diff options
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c99568eb4292..c2813c2b005a 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1029,6 +1029,7 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc, if (list_empty(&dep->request_list)) { dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n", dep->name); + dep->flags |= DWC3_EP_PENDING_REQUEST; return; } @@ -1092,6 +1093,17 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) if (dep->flags & DWC3_EP_PENDING_REQUEST) { int ret; + /* + * If xfernotready is already elapsed and it is a case + * of isoc transfer, then issue END TRANSFER, so that + * you can receive xfernotready again and can have + * notion of current microframe. + */ + if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { + dwc3_stop_active_transfer(dwc, dep->number); + return 0; + } + ret = __dwc3_gadget_kick_transfer(dep, 0, true); if (ret && ret != -EBUSY) { struct dwc3 *dwc = dep->dwc; |