diff -Nru a/drivers/serial/sn_console.c b/drivers/serial/sn_console.c
--- a/drivers/serial/sn_console.c	2004-08-13 15:50:37 -07:00
+++ b/drivers/serial/sn_console.c	2004-08-13 15:50:37 -07:00
@@ -50,6 +50,7 @@
 #include <linux/miscdevice.h>
 #include <linux/serial_core.h>
 
+#include <asm/io.h>
 #include <asm/sn/simulator.h>
 #include <asm/sn/sn2/sn_private.h>
 #include <asm/sn/sn_sal.h>
@@ -1085,7 +1086,9 @@
 			spin_unlock_irqrestore(&port->sc_port.lock, flags);
 
 			puts_raw_fixed(port->sc_ops->sal_puts_raw, s, count);
+#if defined(CONFIG_SMP) || defined(CONFIG_PREEMPT)
 		}
+#endif
 	}
 	else {
 		/* Not yet registered with serial core - simple case */