Remove the lock_kernel() call from chrdev_open()
Jonathan Corbet [Sun, 18 May 2008 21:40:00 +0000 (15:40 -0600)]
All in-kernel char device open() functions now either have their own
lock_kernel() calls or clearly do not need one.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>

fs/char_dev.c

index a54d693..3cb7cda 100644 (file)
@@ -394,11 +394,8 @@ static int chrdev_open(struct inode *inode, struct file *filp)
                cdev_put(p);
                return -ENXIO;
        }
-       if (filp->f_op->open) {
-               lock_kernel();
+       if (filp->f_op->open)
                ret = filp->f_op->open(inode,filp);
-               unlock_kernel();
-       }
        if (ret)
                cdev_put(p);
        return ret;