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Commit 7d0a038b authored by John Youn's avatar John Youn Committed by Felipe Balbi
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usb: dwc3: gadget: Account for link TRB in TRBs left 



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: default avatarJohn Youn <johnyoun@synopsys.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent 32db3d94

drivers/usb/dwc3/gadget.c

+3 −0
Original line number Diff line number Diff line
@@ -868,6 +868,9 @@ 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;

}