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usbnet: remove invalid check 

skb->len is always non-negative.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrzej Hajda 2015-09-21 15:33:59 +02:00 committed by David S. Miller
parent 7e724da644
commit 227b9e8708
3 changed files with 0 additions and 15 deletions
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5
drivers/net/usb/lan78xx.c
View File

@ -2424,11 +2424,6 @@ static int lan78xx_rx(struct lan78xx_net *dev, struct sk_buff *skb)
skb_pull(skb, align_count);
}
if (unlikely(skb->len < 0)) {
netdev_warn(dev->net, "invalid rx length<0 %d", skb->len);
return 0;
}
return 1;
}

5
drivers/net/usb/smsc75xx.c
View File

@ -2185,11 +2185,6 @@ static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
skb_pull(skb, align_count);
}
if (unlikely(skb->len < 0)) {
netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
return 0;
}
return 1;
}

5
drivers/net/usb/smsc95xx.c
View File

@ -1815,11 +1815,6 @@ static int smsc95xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
skb_pull(skb, align_count);
}
if (unlikely(skb->len < 0)) {
netdev_warn(dev->net, "invalid rx length<0 %d\n", skb->len);
return 0;
}
return 1;
}