Commit 3de2685f authored May 23, 2016 by John Youn Committed by Felipe Balbi Jun 20, 2016

usb: dwc3: gadget: Fix truncated cast issue



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

parent 361572b5

drivers/usb/dwc3/gadget.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -882,7 +882,7 @@ 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--;