From 8a1a9c9e4503f246b1d4339c5be3485e14c31858 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Mon, 21 Sep 2015 14:32:00 -0500 Subject: [PATCH] usb: dwc3: gadget: start transfer on XFER_COMPLETE if by the time we get to XFER_COMPLETE we have pending requests to be processed, instead of waiting for a following XFER_NOT_READY, let's start the request right away and, maybe, save the time of a few NAKs due to lack of started transfers. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 201e12342447..c57e2002bcff 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1967,6 +1967,14 @@ static void dwc3_endpoint_transfer_complete(struct dwc3 *dwc, dwc->u1u2 = 0; } + + if (is_xfer_complete && !usb_endpoint_xfer_isoc(dep->endpoint.desc)) { + int ret; + + ret = __dwc3_gadget_kick_transfer(dep, 0, 1); + if (!ret || ret == -EBUSY) + return; + } } static void dwc3_endpoint_interrupt(struct dwc3 *dwc, -- 2.20.1