diff --git a/[refs] b/[refs]
index e29800848b64..fb91f63c4c54 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: f8f2c79d594463427f7114cedb1555110d547d89
+refs/heads/master: ee30d64e42ee1384a81d241b3962d3c1e6174992
diff --git a/trunk/arch/sparc/kernel/apc.c b/trunk/arch/sparc/kernel/apc.c
index d06a405ca718..6707422c9847 100644
--- a/trunk/arch/sparc/kernel/apc.c
+++ b/trunk/arch/sparc/kernel/apc.c
@@ -10,6 +10,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/miscdevice.h>
+#include <linux/smp_lock.h>
 #include <linux/pm.h>
 
 #include <asm/io.h>
@@ -75,6 +76,7 @@ static inline void apc_free(void)
 
 static int apc_open(struct inode *inode, struct file *f)
 {
+	cycle_kernel_lock();
 	return 0;
 }