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Commit d4f1afe5 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: gadget: move requests to cancelled_list 



Whenever we have a request in flight, we can move it to the cancelled
list and later simply iterate over that list and skip over any TRBs we
find.

Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent d5443bbf

drivers/usb/dwc3/gadget.c

+14 −3
Original line number Diff line number Diff line
@@ -1498,6 +1498,17 @@ static void dwc3_gadget_ep_skip_trbs(struct dwc3_ep *dep, struct dwc3_request *r 
	}

}



static void dwc3_gadget_ep_cleanup_cancelled_requests(struct dwc3_ep *dep)

{

	struct dwc3_request		*req;

	struct dwc3_request		*tmp;



	list_for_each_entry_safe(req, tmp, &dep->cancelled_list, list) {

		dwc3_gadget_ep_skip_trbs(dep, req);

		dwc3_gadget_giveback(dep, req, -ECONNRESET);

	}

}



static int dwc3_gadget_ep_dequeue(struct usb_ep *ep,

		struct usb_request *request)

{
@@ -1534,8 +1545,9 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, 
			if (!r->trb)

				goto out0;



			dwc3_gadget_ep_skip_trbs(dep, r);

			goto out1;

			dwc3_gadget_move_cancelled_request(req);

			dwc3_gadget_ep_cleanup_cancelled_requests(dep);

			goto out0;

		}

		dev_err(dwc->dev, "request %pK was not queued to %s\n",

				request, ep->name);
@@ -1543,7 +1555,6 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, 
		goto out0;

	}



out1:

	dwc3_gadget_giveback(dep, req, -ECONNRESET);



out0: