1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c
index bfc6c2eea647..f06f5dbc8cdc 100644
--- a/drivers/usb/core/file.c
+++ b/drivers/usb/core/file.c
@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/rwsem.h>
+#include <linux/slab.h>
 #include <linux/smp_lock.h>
 #include <linux/usb.h>
 
@@ -34,7 +35,6 @@ static int usb_open(struct inode * inode, struct file * file)
 	int err = -ENODEV;
 	const struct file_operations *old_fops, *new_fops = NULL;
 
-	lock_kernel();
 	down_read(&minor_rwsem);
 	c = usb_minors[minor];
 
@@ -53,7 +53,6 @@ static int usb_open(struct inode * inode, struct file * file)
 	fops_put(old_fops);
  done:
 	up_read(&minor_rwsem);
-	unlock_kernel();
 	return err;
 }