From bca0beb9363f8487ac902931a50eb00180a2d14a Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut@gmail.com>
Date: Tue, 26 Jul 2011 16:44:47 +0000
Subject: ASIX: Use only 11 bits of header for data size

The AX88772B uses only 11 bits of the header for the actual size. The other bits
are used for something else. This causes dmesg full of messages:

	asix_rx_fixup() Bad Header Length

This patch trims the check to only 11 bits. I believe on older chips, the
remaining 5 top bits are unused.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/net/usb/asix.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'drivers')

diff --git a/drivers/net/usb/asix.c b/drivers/net/usb/asix.c
index d5b62a46340..c5c4b4def7f 100644
--- a/drivers/net/usb/asix.c
+++ b/drivers/net/usb/asix.c
@@ -314,11 +314,11 @@ static int asix_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 	skb_pull(skb, 4);
 
 	while (skb->len > 0) {
-		if ((header & 0xffff) != ((~header >> 16) & 0xffff))
+		if ((header & 0x07ff) != ((~header >> 16) & 0x07ff))
 			netdev_err(dev->net, "asix_rx_fixup() Bad Header Length\n");
 
 		/* get the packet length */
-		size = (u16) (header & 0x0000ffff);
+		size = (u16) (header & 0x000007ff);
 
 		if ((skb->len) - ((size + 1) & 0xfffe) == 0) {
 			u8 alignment = (unsigned long)skb->data & 0x3;
-- 
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