From: John Youn <johnyoun@xxxxxxxxxxxx> The TRBs left calculation didn't account for the link TRB taking up one spot. If the trb_dequeue < trb_enqueue, then the result includes the link TRB slot so it must be adjusted. Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx> Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> --- drivers/usb/dwc3/gadget.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index ad5c06fa9c0c..5284919fb283 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -846,6 +846,9 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) trbs_left = dep->trb_dequeue - dep->trb_enqueue; trbs_left %= DWC3_TRB_NUM; + if (dep->trb_dequeue < dep->trb_enqueue) + trbs_left--; + return trbs_left; } -- 2.8.3 --------------------------------------------------------------------- Intel Finland Oy Registered Address: PL 281, 00181 Helsinki Business Identity Code: 0357606 - 4 Domiciled in Helsinki This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
