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

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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>
This commit is contained in:
Felipe Balbi 2017-03-08 13:56:37 +02:00
parent ef5e2fa9f6
commit 35b2719e72
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/dwc3/gadget.c
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@ -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);