dwc3: gadget: Avoid processing of trb if HWO bit is set

HWO bit signifies that TRB is still pending with hardware. Hence
avoid processing of TRB if HWO bit is set.

Change-Id: I6d4068eb9e6934f68e7b6204cac8f6f3266dabf4
Signed-off-by: Mayank Rana <mrana@codeaurora.org>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 99bcfe2..41b79a6 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2157,6 +2157,11 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep,
                                dep->name, event->status);
                        return 1;
                }
+
+               /* Make sure that not to queue any TRB if HWO bit is set. */
+               if (req->trb->ctrl & DWC3_TRB_CTRL_HWO)
+                       return 0;
+
                i = 0;
                do {
                        slot = req->start_slot + i;