From 6bb4fe12ea089da98b89dc2630d2273d60fe0c29 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 28 Sep 2015 14:49:02 -0500 Subject: [PATCH] usb: dwc3: gadget: use update transfer command If we get a Xfer Not Ready event with reason "Transfer Active" it means endpoint is still transferring data and we can use that to issue update transfer for this particular endpoint in case we have pending requests in our queue. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index c57e2002bcff..ee3d05fa674d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2012,15 +2012,16 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) { dwc3_gadget_start_isoc(dwc, dep, event); } else { + int active; int ret; + active = event->status & DEPEVT_STATUS_TRANSFER_ACTIVE; + dwc3_trace(trace_dwc3_gadget, "%s: reason %s", - dep->name, event->status & - DEPEVT_STATUS_TRANSFER_ACTIVE - ? "Transfer Active" + dep->name, active ? "Transfer Active" : "Transfer Not Active"); - ret = __dwc3_gadget_kick_transfer(dep, 0, 1); + ret = __dwc3_gadget_kick_transfer(dep, 0, !active); if (!ret || ret == -EBUSY) return;