Author: Andrzej Hajda <a.hajda@samsung.com> 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 Signed-off-by: David S. Miller — drivers/net/usb/lan78xx.c | 5 —– drivers/net/usb/smsc75xx.c | 5 —– drivers/net/usb/smsc95xx.c | 5 —– 3 files changed, 15 deletions(-) diff –git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 6a70a72..d2a5f3f 100644 — …