Commit 62e345ae authored Nov 30, 2015 by Felipe Balbi

usb: dwc3: gadget: don't prestart interrupt endpoints



Because interrupt endpoints usually transmit such
small amounts of data, it seems pointless to prestart
transfers and try to get speed improvements. This
patch also sorts out a problem with CDC ECM function
where its notification endpoint gets stuck in busy
state and we continuously issue Update Transfer
commands.

Fixes: 8a1a9c9e ("usb: dwc3: gadget: start transfer on XFER_COMPLETE")
Signed-off-by: Felipe Balbi <balbi@ti.com>

parent f74875dc

drivers/usb/dwc3/gadget.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1078,6 +1078,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep dep, struct dwc3_request req)
		* little bit faster.
		*/
		if (!usb_endpoint_xfer_isoc(dep->endpoint.desc) &&
		!usb_endpoint_xfer_int(dep->endpoint.desc) &&
		!(dep->flags & DWC3_EP_BUSY)) {
		ret = __dwc3_gadget_kick_transfer(dep, 0, true);
		goto out;