ASIX: Simplify condition in rx_fixup()

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/asix.c

@@ -314,10 +314,9 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 	skb_pull(skb, 4);
 
 	while (skb->len > 0) {
-		if ((short)(header & 0x0000ffff) !=
-		    ~((short)((header & 0xffff0000) >> 16))) {
+		if ((header & 0xffff) != ((~header >> 16) & 0xffff))
 			netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
-		}
+
 		/* get the packet length */
 		size = (u16) (header & 0x0000ffff);