HID: Use DIV_ROUND_UP

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/hid/usbhid/hid-core.c

@@ -278,7 +278,7 @@ static int hid_submit_ctrl(struct hid_device *hid)
 		usbhid->urbctrl->pipe = usb_rcvctrlpipe(hid_to_usb_dev(hid), 0);
 		maxpacket = usb_maxpacket(hid_to_usb_dev(hid), usbhid->urbctrl->pipe, 0);
 		if (maxpacket > 0) {
-			padlen = (len + maxpacket - 1) / maxpacket;
+			padlen = DIV_ROUND_UP(len, maxpacket);
 			padlen *= maxpacket;
 			if (padlen > usbhid->bufsize)
 				padlen = usbhid->bufsize;