usb: dwc3: gadget: use evt->length as we should

Instead of always accessing the macro directly,
let's rely on evt->length which is the actual length
of current event buffer. While unlikely, we could
change event buffer's size at any time.

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

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 230ffa3..304653f 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2834,7 +2834,7 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3_event_buffer *evt)
                 * boundary so I worry about that once we try to handle
                 * that.
                 */
-               evt->lpos = (evt->lpos + 4) % DWC3_EVENT_BUFFERS_SIZE;
+               evt->lpos = (evt->lpos + 4) % evt->length;
                left -= 4;
 
                dwc3_writel(dwc->regs, DWC3_GEVNTCOUNT(0), 4);