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caif: Allow cfpkt_extr_head to process empty message

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Allow NULL pointer in cfpkt_extr_head in order to
skip past header data.

Signed-off-by: Sjur Brændeland <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
[email protected] 2011-11-30 09:22:46 +00:00 • committed by David S. Miller
commit 200c5a3b38
1 changed files with 2 additions and 1 deletions
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3
net/caif/cfpkt_skbuff.c
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@ -144,7 +144,8 @@ int cfpkt_extr_head(struct cfpkt *pkt, void *data, u16 len)
}
from = skb_pull(skb, len);
from -= len;
memcpy(data, from, len);
if (data)
memcpy(data, from, len);
return 0;
}