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Message-Id: <1387190135-17052-3-git-send-email-peter@korsgaard.com>
Date: Mon, 16 Dec 2013 11:35:33 +0100
From: Peter Korsgaard <peter@...sgaard.com>
To: netdev@...r.kernel.org, davem@...emloft.net
Cc: joseph_chang@...icom.com.tw, Peter Korsgaard <peter@...sgaard.com>,
<stable@...r.kernel.org>
Subject: [PATCH 2/4] dm9601: fix reception of full size ethernet frames on dm9620/dm9621a
dm9620/dm9621a require room for 4 byte padding even in dm9601 (3 byte
header) mode.
Cc: <stable@...r.kernel.org>
Signed-off-by: Peter Korsgaard <peter@...sgaard.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 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
--
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