usb: dwc3: ep0: switch over to IS_ALIGNED

IS_ALIGNED provides a much faster operation for
checking proper size alignment then a modulo
operation. Let's use it.

Reported-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 15ec36e..477127a 100644 (file)
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -799,7 +799,7 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
                ret = dwc3_ep0_start_trans(dwc, dep->number,
                                dwc->ctrl_req_addr, 0,
                                DWC3_TRBCTL_CONTROL_DATA);
-       } else if ((req->request.length % dep->endpoint.maxpacket)
+       } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket)
                        && (dep->number == 0)) {
                u32             transfer_size;