1 files changed, 4 insertions, 0 deletions

diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c
index 8716f4d5314b..c1cbcd1a1398 100644
--- a/arch/ia64/sn/kernel/tiocx.c
+++ b/arch/ia64/sn/kernel/tiocx.c
@@ -14,6 +14,7 @@
 #include <linux/proc_fs.h>
 #include <linux/device.h>
 #include <linux/delay.h>
+#include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/sn/sn_sal.h>
 #include <asm/sn/addrs.h>
@@ -481,6 +482,9 @@ static int __init tiocx_init(void)
         cnodeid_t cnodeid;
         int found_tiocx_device = 0;
 
+        if (!ia64_platform_is("sn2"))
+                return -ENODEV;
+
         bus_register(&tiocx_bus_type);
 
         for (cnodeid = 0; cnodeid < MAX_COMPACT_NODES; cnodeid++) {