usb: dwc3: gadget: avoid memcpy()ing event buffer

We're only using the 4 byte events and memcpy()
will make us slower. We can easily avoid that.

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 2c4482f..1f64e7c 100644 (file)
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2223,7 +2223,8 @@ static irqreturn_t dwc3_process_event_buf(struct dwc3 *dwc, u32 buf)
        while (left > 0) {
                union dwc3_event event;
 
-               memcpy(&event.raw, (evt->buf + evt->lpos), sizeof(event.raw));
+               event.raw = *(u32 *) (evt->buf + evt->lpos);
+
                dwc3_process_event_entry(dwc, &event);
                /*
                 * XXX we wrap around correctly to the next entry as almost all