diff --git a/drivers/usb/image/mdc800.c b/drivers/usb/image/mdc800.c
index dce4f7b69ac30e10a709fc76aa9849d005db9c39..e192e8f7c5601cdc7eda7c4ac72a1e425729a46b 100644
--- a/drivers/usb/image/mdc800.c
+++ b/drivers/usb/image/mdc800.c
@@ -96,7 +96,6 @@
 #include <linux/module.h>
 #include <linux/wait.h>
 #include <linux/mutex.h>
-#include <linux/smp_lock.h>
 
 #include <linux/usb.h>
 #include <linux/fs.h>
@@ -623,7 +622,6 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
 	int retval=0;
 	int errn=0;
 
-	lock_kernel();
 	mutex_lock(&mdc800->io_lock);
 	
 	if (mdc800->state == NOT_CONNECTED)
@@ -662,7 +660,6 @@ static int mdc800_device_open (struct inode* inode, struct file *file)
 
 error_out:
 	mutex_unlock(&mdc800->io_lock);
-	unlock_kernel();
 	return errn;
 }