[PATCH] e1000: Fixed frame size logic

Simplified the logic used to assign the frame_size.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: John Ronciak <john.ronciak@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/e1000/e1000_ethtool.c

@@ -1401,7 +1401,7 @@ static void
 e1000_create_lbtest_frame(struct sk_buff *skb, unsigned int frame_size)
 {
 	memset(skb->data, 0xFF, frame_size);
-	frame_size = (frame_size % 2) ? (frame_size - 1) : frame_size;
+	frame_size &= ~1;
 	memset(&skb->data[frame_size / 2], 0xAA, frame_size / 2 - 1);
 	memset(&skb->data[frame_size / 2 + 10], 0xBE, 1);
 	memset(&skb->data[frame_size / 2 + 12], 0xAF, 1);
@@ -1410,7 +1410,7 @@ e1000_create_lbtest_frame(struct sk_buff *skb, unsigned int frame_size)
 static int
 e1000_check_lbtest_frame(struct sk_buff *skb, unsigned int frame_size)
 {
-	frame_size = (frame_size % 2) ? (frame_size - 1) : frame_size;
+	frame_size &= ~1;
 	if(*(skb->data + 3) == 0xFF) {
 		if((*(skb->data + frame_size / 2 + 10) == 0xBE) &&
 		   (*(skb->data + frame_size / 2 + 12) == 0xAF)) {