From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Korsgaard Subject: [PATCH 2/4] dm9601: fix reception of full size ethernet frames on dm9620/dm9621a Date: Mon, 16 Dec 2013 11:35:33 +0100 Message-ID: <1387190135-17052-3-git-send-email-peter@korsgaard.com> References: <1387190135-17052-1-git-send-email-peter@korsgaard.com> Cc: joseph_chang@davicom.com.tw, Peter Korsgaard , To: netdev@vger.kernel.org, davem@davemloft.net Return-path: In-Reply-To: <1387190135-17052-1-git-send-email-peter@korsgaard.com> Sender: stable-owner@vger.kernel.org List-Id: netdev.vger.kernel.org dm9620/dm9621a require room for 4 byte padding even in dm9601 (3 byte header) mode. Cc: Signed-off-by: Peter Korsgaard --- 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 8e88572..aca0285 100644 --- a/drivers/net/usb/dm9601.c +++ b/drivers/net/usb/dm9601.c @@ -364,7 +364,12 @@ 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; -- 1.8.5.1