diff --git a/drivers/base/class.c b/drivers/base/class.c
index c3e5697..db65fd0 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -17,6 +17,7 @@
 #include <linux/string.h>
 #include <linux/kdev_t.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 #include "base.h"
 
 #define to_class_attr(_attr) container_of(_attr, struct class_attribute, attr)
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index 75ce871..08d9cc9 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -16,6 +16,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/bootmem.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include "base.h"
 
diff --git a/drivers/base/sys.c b/drivers/base/sys.c
index 3431eb6..66ed8f2 100644
--- a/drivers/base/sys.c
+++ b/drivers/base/sys.c
@@ -21,6 +21,7 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/pm.h>
+#include <asm/semaphore.h>
 
 extern struct subsystem devices_subsys;