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usb: dwc3: gadget: always decrement by 1
[cascardo/linux.git]
/
drivers
/
usb
/
dwc3
/
gadget.c
diff --git
a/drivers/usb/dwc3/gadget.c
b/drivers/usb/dwc3/gadget.c
index
122e64d
..
7a8d3d8
100644
(file)
--- a/
drivers/usb/dwc3/gadget.c
+++ b/
drivers/usb/dwc3/gadget.c
@@
-884,12
+884,9
@@
static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep)
return DWC3_TRB_NUM - 1;
}
return DWC3_TRB_NUM - 1;
}
- trbs_left = dep->trb_dequeue - dep->trb_enqueue;
+ trbs_left = dep->trb_dequeue - dep->trb_enqueue
- 1
;
trbs_left &= (DWC3_TRB_NUM - 1);
trbs_left &= (DWC3_TRB_NUM - 1);
- if (dep->trb_dequeue < dep->trb_enqueue)
- trbs_left--;
-
return trbs_left;
}
return trbs_left;
}