10886 smatch debug macro cleanup in usr/src/uts

@@ -20,10 +20,12 @@
  */
 /*
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  *
+ * Copyright 2019 Joyent, Inc.
+ *
  * The "bscbus" driver provides access to the LOMlite2 virtual registers,
  * so that its clients (children) need not be concerned with the details
  * of the access mechanism, which in this case is implemented via a
  * packet-based protocol over a Xbus (similar to ebus) parallel link to the
  * H8 host interface registers.

@@ -402,11 +404,11 @@
                 (void) strlog(csp->ssp->majornum, csp->ssp->instance,
                     code, SL_TRACE, buf);
         }
 }
 #else /* DEBUG */
-#define bscbus_trace
+#define bscbus_trace(...) (void)(0)
 #endif /* DEBUG */
 
 static struct bscbus_state *
 bscbus_getstate(dev_info_t *dip, int instance, const char *caller)
 {