usb: dwc3: gadget: stop processing on HWO set

stop consuming TRBs when we reach one with HWO bit
already set. This will prevent us from prematurely
retiring a TRB.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

1 files changed, 1 insertions, 10 deletions

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 7a4d4d2534d4..1f5597ef945d 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1979,16 +1979,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
                 trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
 
         if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
-                /*
-                 * We continue despite the error. There is not much we
-                 * can do. If we don't clean it up we loop forever. If
-                 * we skip the TRB then it gets overwritten after a
-                 * while since we use them in a ring buffer. A BUG()
-                 * would help. Lets hope that if this occurs, someone
-                 * fixes the root cause instead of looking away :)
-                 */
-                dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
-                                dep->name, trb);
+                return 1;
 
         count = trb->size & DWC3_TRB_SIZE_MASK;