NULL noise in drivers/net

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/skfp/smt.c b/drivers/net/skfp/smt.c
index ced2c8f..ffbfb1b 100644
--- a/drivers/net/skfp/smt.c
+++ b/drivers/net/skfp/smt.c
@@ -712,7 +712,7 @@
 			smc->mib.priv.fddiPRIVECF_Reply_Rx++ ;
 			DB_SMT("SMT: received ECF reply from %s\n",
 				addr_to_string(&sm->smt_source),0) ;
-			if (sm_to_para(smc,sm,SMT_P_ECHODATA) == 0) {
+			if (sm_to_para(smc,sm,SMT_P_ECHODATA) == NULL) {
 				DB_SMT("SMT: ECHODATA missing\n",0,0) ;
 				break ;
 			}