add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/net/wan/lapbether.c
..
..
@@ -341,6 +341,9 @@
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 	ASSERT_RTNL();
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+	if (dev->type != ARPHRD_ETHER)
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+		return -EINVAL;
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+
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 	ndev = alloc_netdev(sizeof(*lapbeth), "lapb%d", NET_NAME_UNKNOWN,
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 			    lapbeth_setup);
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 	if (!ndev)