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    Subject[PATCH 3.5 49/96] dm9601: fix reception of full size ethernet frames on dm9620/dm9621a
    Date
    3.5.7.29 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Peter Korsgaard <peter@korsgaard.com>

    commit 407900cfb54bdb2cfa228010b6697305f66b2948 upstream.

    dm9620/dm9621a require room for 4 byte padding even in dm9601 (3 byte
    header) mode.

    Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
    ---
    drivers/net/usb/dm9601.c | 7 ++++++-
    1 file changed, 6 insertions(+), 1 deletion(-)

    diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c
    index e55db3a..a1b1b67 100644
    --- a/drivers/net/usb/dm9601.c
    +++ b/drivers/net/usb/dm9601.c
    @@ -445,7 +445,12 @@ static int dm9601_bind(struct usbnet *dev, struct usb_interface *intf)
    dev->net->ethtool_ops = &dm9601_ethtool_ops;
    dev->net->hard_header_len += DM_TX_OVERHEAD;
    dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
    - dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD;
    +
    + /* dm9620/21a require room for 4 byte padding, even in dm9601
    + * mode, so we need +1 to be able to receive full size
    + * ethernet frames.
    + */
    + dev->rx_urb_size = dev->net->mtu + ETH_HLEN + DM_RX_OVERHEAD + 1;

    dev->mii.dev = dev->net;
    dev->mii.mdio_read = dm9601_mdio_read;
    --
    1.8.3.2


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