diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index c3f67ea..4724693 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -26,19 +26,10 @@
 #include "w1.h"
 #include "w1_log.h"
 #include "w1_netlink.h"
+#include "w1_int.h"
 
 static u32 w1_ids = 1;
 
-extern struct device_driver w1_master_driver;
-extern struct bus_type w1_bus_type;
-extern struct device w1_master_device;
-extern int w1_max_slave_count;
-extern int w1_max_slave_ttl;
-extern struct list_head w1_masters;
-extern spinlock_t w1_mlock;
-
-extern int w1_process(void *);
-
 static struct w1_master * w1_alloc_dev(u32 id, int slave_count, int slave_ttl,
 				       struct device_driver *driver,
 				       struct device *device)
@@ -103,7 +94,7 @@
 	return dev;
 }
 
-void w1_free_dev(struct w1_master *dev)
+static void w1_free_dev(struct w1_master *dev)
 {
 	device_unregister(&dev->dev);
 }