1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 13d1d367f7f1..d7352aa73b5e 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -33,6 +33,7 @@
 #include <linux/errno.h>
 #include <linux/smp_lock.h>
 #include <linux/usb.h>
+#include <linux/mutex.h>
 
 #include <asm/io.h>
 #include <asm/scatterlist.h>
@@ -639,7 +640,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
         struct usb_bus *bus;
         struct usb_device *dev = NULL;
         
-        down(&usb_bus_list_lock);
+        mutex_lock(&usb_bus_list_lock);
         for (buslist = usb_bus_list.next;
              buslist != &usb_bus_list; 
              buslist = buslist->next) {
@@ -653,7 +654,7 @@ struct usb_device *usb_find_device(u16 vendor_id, u16 product_id)
                         goto exit;
         }
 exit:
-        up(&usb_bus_list_lock);
+        mutex_unlock(&usb_bus_list_lock);
         return dev;
 }