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caif: move the dereference below the NULL test

The dereference should be moved below the NULL test.

spatch with a semantic match is used to found this.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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1 parent 2120c52 commit 566f26aa705609d05940289036ab914c8a3be707 Wei Yongjun committed with davem330 Sep 9, 2012
Showing with 3 additions and 2 deletions.
  1. +3 −2 net/caif/cfsrvl.c
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5 net/caif/cfsrvl.c
@@ -211,9 +211,10 @@ void caif_client_register_refcnt(struct cflayer *adapt_layer,
void (*put)(struct cflayer *lyr))
{
struct cfsrvl *service;
- service = container_of(adapt_layer->dn, struct cfsrvl, layer);
- WARN_ON(adapt_layer == NULL || adapt_layer->dn == NULL);
+ if (WARN_ON(adapt_layer == NULL || adapt_layer->dn == NULL))
+ return;
+ service = container_of(adapt_layer->dn, struct cfsrvl, layer);
service->hold = hold;
service->put = put;
}

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