diff --git a/kernel/busses/i2c-amd756-s4882.c b/kernel/busses/i2c-amd756-s4882.c
index d0cfa2c6..195da2ad 100644
--- a/kernel/busses/i2c-amd756-s4882.c
+++ b/kernel/busses/i2c-amd756-s4882.c
@@ -38,6 +38,7 @@
 #include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
+#include <asm/semaphore.h>
 
 #define DRV_NAME	"i2c-amd756-s4882"
 
diff --git a/kernel/busses/i2c-keywest.h b/kernel/busses/i2c-keywest.h
index 9e384a5c..906a6f12 100644
--- a/kernel/busses/i2c-keywest.h
+++ b/kernel/busses/i2c-keywest.h
@@ -1,6 +1,8 @@
 #ifndef __I2C_KEYWEST_H__
 #define __I2C_KEYWEST_H__
 
+#include <asm/semaphore.h>
+
 /* The Tumbler audio equalizer can be really slow sometimes */
 #define POLL_TIMEOUT		(2*HZ)