diff options
| author | John Youn <johnyoun@synopsys.com> | 2016-05-19 17:26:15 -0700 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2016-06-20 12:32:44 +0300 |
| commit | 7d0a038b130cde7265d6bbc5e148734cb127f341 (patch) | |
| tree | eaa98442860f754080f12d408711a993d2d281b9 /drivers/usb/dwc3 | |
| parent | 32db3d9437b6bd560daeef82a8325436a4ac3366 (diff) | |
| download | blackbird-op-linux-7d0a038b130cde7265d6bbc5e148734cb127f341.tar.gz blackbird-op-linux-7d0a038b130cde7265d6bbc5e148734cb127f341.zip | |
usb: dwc3: gadget: Account for link TRB in TRBs left
The TRBs left calculation didn't account for the link TRB taking up one
spot.
If the trb_dequeue < trb_enqueue, then the result includes the link
TRB slot so it must be adjusted.
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 4dea3e08f95c..3c4fd4854317 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -868,6 +868,9 @@ static u32 dwc3_calc_trbs_left(struct dwc3_ep *dep) trbs_left = dep->trb_dequeue - dep->trb_enqueue; trbs_left %= DWC3_TRB_NUM; + if (dep->trb_dequeue < dep->trb_enqueue) + trbs_left--; + return trbs_left; } |
