usb: dwc3: gadget: decrement trbs_left for each sg entry

If we don't, we will overwrite valid TRBs.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 3d2978c..d2884a4 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -924,7 +924,7 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep,
                        chain = false;
                }
 
-               if (!trbs_left)
+               if (!trbs_left--)
                        last = true;
 
                if (last)