diff -urN RC13-git7-hisax/drivers/net/smc91x.h RC13-git7-smc-undef/drivers/net/smc91x.h
--- RC13-git7-hisax/drivers/net/smc91x.h	2005-08-28 23:09:44.000000000 -0400
+++ RC13-git7-smc-undef/drivers/net/smc91x.h	2005-09-07 13:55:44.000000000 -0400
@@ -986,7 +986,7 @@
 	})
 #endif
 
-#if SMC_CAN_USE_DATACS
+#ifdef SMC_CAN_USE_DATACS
 #define SMC_PUSH_DATA(p, l)						\
 	if ( lp->datacs ) {						\
 		unsigned char *__ptr = (p);				\