Merge tag 'usb-3.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB patches from Greg Kroah-Hartman:
 "Here are a number of USB patches, a bit more than I normally like this
  late in the -rc series, but given people's vacations (myself
  included), and the kernel summit, it seems to have happened this way.

  All are tiny, but they add up.  A number of gadget and xhci fixes, and
  a few new device ids.  All have been tested in linux-next.

  Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"

* tag 'usb-3.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
  usb: chipidea: udc: don't stall endpoint if request list is empty in isr_tr_complete_low
  usb: chipidea: cleanup dma_pool if udc_start() fails
  usb: chipidea: udc: fix error path in udc_start()
  usb: chipidea: udc: add pullup fuction, needed by the uvc gadget
  usb: chipidea: udc: fix setup of endpoint maxpacket size
  USB: option: replace ZTE K5006-Z entry with vendor class rule
  EHCI: Update qTD next pointer in QH overlay region during unlink
  USB: cdc-wdm: fix wdm_find_device* return value
  USB: ftdi_sio: do not claim CDC ACM function
  usb: dwc3: gadget: fix pending isoc handling
  usb: renesas_usbhs: fixup DMA transport data alignment
  usb: gadget: at91udc: Don't check for ep->ep.desc
  usb: gadget: at91udc: don't overwrite driver data
  usb: dwc3: core: fix incorrect usage of resource pointer
  usb: musb: musbhsdma: fix IRQ check
  usb: musb: tusb6010: fix error path in tusb_probe()
  usb: musb: host: fix for musb_start_urb Oops
  usb: gadget: dummy_hcd: add support for USB_DT_BOS on rh
  usb: gadget: dummy_hcd: fixup error probe path
  usb: gadget: s3c-hsotg.c: fix error return code
  ...

1 files changed, 17 insertions, 2 deletions

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 58fdfad96b4d..c2813c2b005a 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -263,8 +263,11 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
 	if (req->request.status == -EINPROGRESS)
 		req->request.status = status;
 
-	usb_gadget_unmap_request(&dwc->gadget, &req->request,
-			req->direction);
+	if (dwc->ep0_bounced && dep->number == 0)
+		dwc->ep0_bounced = false;
+	else
+		usb_gadget_unmap_request(&dwc->gadget, &req->request,
+				req->direction);
 
 	dev_dbg(dwc->dev, "request %p from %s completed %d/%d ===> %d\n",
 			req, dep->name, req->request.actual,
@@ -1026,6 +1029,7 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc,
 	if (list_empty(&dep->request_list)) {
 		dev_vdbg(dwc->dev, "ISOC ep %s run out for requests.\n",
 			dep->name);
+		dep->flags |= DWC3_EP_PENDING_REQUEST;
 		return;
 	}
 
@@ -1089,6 +1093,17 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
 	if (dep->flags & DWC3_EP_PENDING_REQUEST) {
 		int	ret;
 
+		/*
+		 * If xfernotready is already elapsed and it is a case
+		 * of isoc transfer, then issue END TRANSFER, so that
+		 * you can receive xfernotready again and can have
+		 * notion of current microframe.
+		 */
+		if (usb_endpoint_xfer_isoc(dep->endpoint.desc)) {
+			dwc3_stop_active_transfer(dwc, dep->number);
+			return 0;
+		}
+
 		ret = __dwc3_gadget_kick_transfer(dep, 0, true);
 		if (ret && ret != -EBUSY) {
 			struct dwc3	*dwc = dep->dwc;