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include/net/genetlink.h: Allow genlmsg_cancel to accept a NULL argument

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nlmsg_cancel can accept NULL as its second argument, so for similarity,
this patch extends genlmsg_cancel to be able to accept a NULL second
argument as well.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julia Lawall 2011-01-28 05:43:40 +00:00 committed by David S. Miller
parent e2d57766e6
commit 38db9e1db1
1 changed files with 2 additions and 1 deletions
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include/net/genetlink.h
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@ -195,7 +195,8 @@ static inline int genlmsg_end(struct sk_buff *skb, void *hdr)
*/
static inline void genlmsg_cancel(struct sk_buff *skb, void *hdr)
{
nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
if (hdr)
nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
}
/**