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Commit c2df85ca authored by Paul Zimmerman's avatar Paul Zimmerman Committed by Felipe Balbi
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usb: dwc3: clear 'res_trans_idx' as soon as it becomes invalid 



Transfer resource index is cleared in hardware when XFERCOMPLETE
event is generated, so clear the driver's res_trans_idx variable
immediately after that event is received. The upcoming hibernation
patches depend on this change.

Signed-off-by: default avatarPaul Zimmerman <paulz@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 249a4569

drivers/usb/dwc3/ep0.c

+1 −0
Original line number Diff line number Diff line
@@ -617,6 +617,7 @@ static void dwc3_ep0_xfer_complete(struct dwc3 *dwc, 
	struct dwc3_ep		*dep = dwc->eps[event->endpoint_number];



	dep->flags &= ~DWC3_EP_BUSY;

	dep->res_trans_idx = 0;

	dwc->setup_packet_pending = false;



	switch (dwc->ep0state) {

drivers/usb/dwc3/gadget.c

+3 −3
Original line number Diff line number Diff line
@@ -1628,10 +1628,8 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, 
		status = -ECONNRESET;



	clean_busy = dwc3_cleanup_done_reqs(dwc, dep, event, status);

	if (clean_busy) {

	if (clean_busy)

		dep->flags &= ~DWC3_EP_BUSY;

		dep->res_trans_idx = 0;

	}



	/*

	 * WORKAROUND: This is the 2nd half of U1/U2 -> U0 workaround.
@@ -1736,6 +1734,8 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, 


	switch (event->endpoint_event) {

	case DWC3_DEPEVT_XFERCOMPLETE:

		dep->res_trans_idx = 0;



		if (usb_endpoint_xfer_isoc(dep->desc)) {

			dev_dbg(dwc->dev, "%s is an Isochronous endpoint\n",

					dep->name);