>From sparse: warning: cast truncates bits from constant value (100 becomes 0) The DWC3_TRB_NUM constant is too big for u8. Do the calculation a slightly different way that should still be optimized out for the case where DWC3_TRB_NUM == 256. Signed-off-by: John Youn <johnyoun@xxxxxxxxxxxx> --- drivers/usb/dwc3/gadget.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1bddc8d..a1180ea 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -896,7 +896,7 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) } trbs_left = dep->trb_dequeue - dep->trb_enqueue; - trbs_left %= DWC3_TRB_NUM; + trbs_left &= (DWC3_TRB_NUM - 1); if (dep->trb_dequeue < dep->trb_enqueue) trbs_left--; -- 2.8.2 -- 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
