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6lowpan: fix error checking code

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Bool variable 'fail' is always non-negative, it indicates an error if it
is true.

The problem has been detected using coccinelle script
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Acked-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Andrzej Hajda 2016-02-24 09:32:13 +01:00 committed by Marcel Holtmann
parent 8790404de0
commit 4c23d87457
1 changed files with 1 additions and 1 deletions
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2
net/6lowpan/iphc.c
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@ -482,7 +482,7 @@ static int lowpan_uncompress_multicast_ctx_daddr(struct sk_buff *skb,
ipaddr->s6_addr[0] = 0xFF;
fail = lowpan_fetch_skb(skb, &ipaddr->s6_addr[1], 2);
fail |= lowpan_fetch_skb(skb, &ipaddr->s6_addr[12], 4);
if (fail < 0)
if (fail)
return -EIO;
/* take prefix_len and network prefix from the context */