diff options
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 359824c871cd..76c383eecfd3 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1326,8 +1326,13 @@ static int __dwc3_gadget_kick_transfer(struct dwc3_ep *dep) int ret; u32 cmd; + /* + * Note that it's normal to have no new TRBs prepared (i.e. ret == 0). + * This happens when we need to stop and restart a transfer such as in + * the case of reinitiating a stream or retrying an isoc transfer. + */ ret = dwc3_prepare_trbs(dep); - if (ret <= 0) + if (ret < 0) return ret; starting = !(dep->flags & DWC3_EP_TRANSFER_STARTED); |