diff options
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 30 |
1 files changed, 8 insertions, 22 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b76a114e67d8..4ad994972b19 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1233,20 +1233,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) list_add_tail(&req->list, &dep->request_list); /* - * If there are no pending requests and the endpoint isn't already - * busy, we will just start the request straight away. - * - * This will save one IRQ (XFER_NOT_READY) and possibly make it a - * little bit faster. - */ - if (!usb_endpoint_xfer_isoc(dep->endpoint.desc) && - !usb_endpoint_xfer_int(dep->endpoint.desc) && - !(dep->flags & DWC3_EP_BUSY)) { - ret = __dwc3_gadget_kick_transfer(dep, 0, true); - goto out; - } - - /* * There are a few special cases: * * 1. XferNotReady with empty list of requests. We need to kick the @@ -2529,14 +2515,6 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, dwc->u1u2 = 0; } - - if (!usb_endpoint_xfer_isoc(dep->endpoint.desc)) { - int ret; - - ret = __dwc3_gadget_kick_transfer(dep, 0, is_xfer_complete); - if (!ret || ret == -EBUSY) - return; - } } static void dwc3_endpoint_interrupt(struct dwc3 *dwc, @@ -2593,6 +2571,14 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, ? "Transfer Active" : "Transfer Not Active"); + /* + * If XFERNOTREADY interrupt is received with event + * status as TRANSFER ACTIVE, don't kick next transfer. + * otherwise data stall is seen on that endpoint. + */ + if (event->status & DEPEVT_STATUS_TRANSFER_ACTIVE) + return; + ret = __dwc3_gadget_kick_transfer(dep, 0, 1); if (!ret || ret == -EBUSY) return; |