Commit c0bed680 authored by Jonathan Corbet's avatar Jonathan Corbet
Browse files

raw: BKL pushdown 



Put explicit lock_kernel() calls into raw_open(), even though the existing
locking looks adequate.

Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent b8c71d7a

drivers/char/raw.c

+3 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include <linux/cdev.h>

#include <linux/device.h>

#include <linux/mutex.h>

#include <linux/smp_lock.h>



#include <asm/uaccess.h>
@@ -53,6 +54,7 @@ static int raw_open(struct inode *inode, struct file *filp) 
		return 0;

	}



	lock_kernel();

	mutex_lock(&raw_mutex);



	/*
@@ -79,6 +81,7 @@ static int raw_open(struct inode *inode, struct file *filp) 
			bdev->bd_inode->i_mapping;

	filp->private_data = bdev;

	mutex_unlock(&raw_mutex);

	unlock_kernel();

	return 0;



out2: