From f5e46aa4a124bfac34a770c4cfe5023de99380d4 Mon Sep 17 00:00:00 2001 From: Michael Grzeschik Date: Wed, 1 Jul 2020 20:24:53 +0200 Subject: [PATCH] usb: dwc3: gadget: when the started list is empty stop the active xfer When we have nothing left to be queued after handling the last trb we have to stop the current transfer. This way we can ensure that the next request will be queued with a new and valid timestamp and will not directly run into an missed xfer. Reviewed-by: Thinh Nguyen Signed-off-by: Michael Grzeschik Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 779b17373929..e44bfc3b5096 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2738,7 +2738,9 @@ static bool dwc3_gadget_endpoint_trbs_complete(struct dwc3_ep *dep, if (dep->flags & DWC3_EP_END_TRANSFER_PENDING) goto out; - if (status == -EXDEV && list_empty(&dep->started_list)) + if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && + list_empty(&dep->started_list) && + (list_empty(&dep->pending_list) || status == -EXDEV)) dwc3_stop_active_transfer(dep, true, true); else if (dwc3_gadget_ep_should_continue(dep)) if (__dwc3_gadget_kick_transfer(dep) == 0) -- 2.11.0