diff options
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 7a8d3d822b54..122e64df2f4d 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -884,9 +884,12 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) return DWC3_TRB_NUM - 1; } - trbs_left = dep->trb_dequeue - dep->trb_enqueue - 1; + trbs_left = dep->trb_dequeue - dep->trb_enqueue; trbs_left &= (DWC3_TRB_NUM - 1); + if (dep->trb_dequeue < dep->trb_enqueue) + trbs_left--; + return trbs_left; } |