| Date | Wed, 09 Nov 2011 13:28:15 -0800 | From | Greg KH <> | Subject | [173/262] ASIX: Use only 11 bits of header for data size |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Marek Vasut <marek.vasut@gmail.com>
commit bca0beb9363f8487ac902931a50eb00180a2d14a upstream.
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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/usb/asix.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/usb/asix.c +++ b/drivers/net/usb/asix.c @@ -314,11 +314,11 @@ static int asix_rx_fixup(struct usbnet * 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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