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6lowpan: iphc: fix invalid case handling

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This patch fixes the return value in a case which should never occur.
Instead returning "-EINVAL" we return LOWPAN_IPHC_DAM_00 which is
invalid on context based addresses. Also change the WARN_ON_ONCE to
WARN_ONCE which was suggested by Dan Carpenter.

Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Alexander Aring <[email protected]>
Signed-off-by: Marcel Holtmann <[email protected]>
This commit is contained in:
Alexander Aring 2016-02-26 09:06:07 +01:00 • committed by Marcel Holtmann
commit 2306f65637
1 changed files with 2 additions and 2 deletions
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4
net/6lowpan/iphc.c
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@ -811,8 +811,8 @@ static u8 lowpan_compress_ctx_addr(u8 **hc_ptr, const struct in6_addr *ipaddr,
goto out;
}
WARN_ON_ONCE("context found but no address mode matched\n");
return -EINVAL;
WARN_ONCE(1, "context found but no address mode matched\n");
return LOWPAN_IPHC_DAM_00;
out:
if (sam)