From 441993da47777d961300c070fe1210600af48ad8 Mon Sep 17 00:00:00 2001
From: Ondrej Zary <linux@rainbow-software.org>
Date: Sat, 11 Sep 2010 05:40:16 +0000
Subject: [PATCH] cx82310_eth: allow empty URBs
Empty received URBs are currently counted as errors but the device sends them
sometimes as part of regular traffic - so remove this check.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/cx82310_eth.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/net/usb/cx82310_eth.c b/drivers/net/usb/cx82310_eth.c
index 4d451789ea7c..8969f124c18c 100644
--- a/drivers/net/usb/cx82310_eth.c
+++ b/drivers/net/usb/cx82310_eth.c
@@ -150,11 +150,11 @@ static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf)
/*
* this must not include ethernet header as the device can send partial
- * packets with no header (URB is at least 2 bytes long, so 2 is OK)
+ * packets with no header (and sometimes even empty URBs)
*/
- dev->net->hard_header_len = 2;
+ dev->net->hard_header_len = 0;
/* we can send at most 1514 bytes of data (+ 2-byte header) per URB */
- dev->hard_mtu = CX82310_MTU + dev->net->hard_header_len;
+ dev->hard_mtu = CX82310_MTU + 2;
/* we can receive URBs up to 4KB from the device */
dev->rx_urb_size = 4096;
@@ -228,12 +228,6 @@ static int cx82310_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
return 1;
}
- if (skb->len < 2) {
- dev_err(&dev->udev->dev, "RX frame too short: %d B\n",
- skb->len);
- return 0;
- }
-
/* a skb can contain multiple packets */
while (skb->len > 1) {
/* first two bytes are packet length */
--
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