USB: sisusbvga: Remove the BKL from open

BKL is not needed here because necessary locking is already provided
by mutex sisusb->lock.

Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 9 deletions

diff --git a/drivers/usb/misc/sisusbvga/sisusb.c b/drivers/usb/misc/sisusbvga/sisusb.c
index 63a6070a478..30d930386b6 100644
--- a/drivers/usb/misc/sisusbvga/sisusb.c
+++ b/drivers/usb/misc/sisusbvga/sisusb.c
@@ -47,7 +47,6 @@
 #include <linux/spinlock.h>
 #include <linux/kref.h>
 #include <linux/usb.h>
-#include <linux/smp_lock.h>
 #include <linux/vmalloc.h>
 
 #include "sisusb.h"
@@ -2416,14 +2415,11 @@ sisusb_open(struct inode *inode, struct file *file)
         struct usb_interface *interface;
         int subminor = iminor(inode);
 
-        lock_kernel();
         if (!(interface = usb_find_interface(&sisusb_driver, subminor))) {
-                unlock_kernel();
                 return -ENODEV;
         }
 
         if (!(sisusb = usb_get_intfdata(interface))) {
-                unlock_kernel();
                 return -ENODEV;
         }
 
@@ -2431,13 +2427,11 @@ sisusb_open(struct inode *inode, struct file *file)
 
         if (!sisusb->present || !sisusb->ready) {
                 mutex_unlock(&sisusb->lock);
-                unlock_kernel();
                 return -ENODEV;
         }
 
         if (sisusb->isopen) {
                 mutex_unlock(&sisusb->lock);
-                unlock_kernel();
                 return -EBUSY;
         }
 
@@ -2446,13 +2440,11 @@ sisusb_open(struct inode *inode, struct file *file)
                         if (sisusb_init_gfxdevice(sisusb, 0)) {
                                 mutex_unlock(&sisusb->lock);
                                 dev_err(&sisusb->sisusb_dev->dev, "Failed to initialize device\n");
-                                unlock_kernel();
                                 return -EIO;
                         }
                 } else {
                         mutex_unlock(&sisusb->lock);
                         dev_err(&sisusb->sisusb_dev->dev, "Device not attached to USB 2.0 hub\n");
-                        unlock_kernel();
                         return -EIO;
                 }
         }
@@ -2465,7 +2457,6 @@ sisusb_open(struct inode *inode, struct file *file)
         file->private_data = sisusb;
 
         mutex_unlock(&sisusb->lock);
-        unlock_kernel();
 
         return 0;
 }