diff options
| author | John Youn <johnyoun@synopsys.com> | 2016-05-23 11:32:45 -0700 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-06-20 12:32:45 +0300 |
| commit | 3de2685f0c395a56b909dbefd40fb287c9df31b2 (patch) | |
| tree | 9e7deefa7c6e2fae28e63c594e690fba1e8b20b2 | |
| parent | 361572b5f7a95b341a92d34b9bf41f71bbdae34d (diff) | |
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>
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index fbc796892f6b..d0f74583c955 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -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--; |