usb: dwc3: gadget: make to increment req->remaining in all cases

Sometimes, we might get a completion for a TRB which is left with HWO
bit. Even in these cases, we should increment req->remaining to
properly report total transferred size. I noticed this while debuggin
a separate problem seen with MSC tests from USBCV. Sometimes we would
erroneously report a completion for a 512-byte transfer when, in
reality, we transferred 0 bytes.

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

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 3db5eea..0d75158 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2189,12 +2189,12 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
                return 1;
        }
 
-       if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
-               return 1;
-
        count = trb->size & DWC3_TRB_SIZE_MASK;
        req->remaining += count;
 
+       if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
+               return 1;
+
        if (dep->direction) {
                if (count) {
                        trb_status = DWC3_TRB_SIZE_TRBSTS(trb->size);