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Commit 6ce46a43 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Jonathan Corbet
Browse files

monreader: BKL pushdown 



[jmc: added <linux/smp_lock.h>]

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarJonathan Corbet <corbet@lwn.net>
parent 77149367

drivers/s390/char/monreader.c

+4 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 
#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/init.h>

#include <linux/smp_lock.h>

#include <linux/errno.h>

#include <linux/types.h>

#include <linux/kernel.h>
@@ -340,6 +341,7 @@ static int mon_open(struct inode *inode, struct file *filp) 
	/*

	 * only one user allowed

	 */

	lock_kernel();

	rc = -EBUSY;

	if (test_and_set_bit(MON_IN_USE, &mon_in_use))

		goto out;
@@ -377,6 +379,7 @@ static int mon_open(struct inode *inode, struct file *filp) 
	}

	P_INFO("open, established connection to *MONITOR service\n\n");

	filp->private_data = monpriv;

	unlock_kernel();

	return nonseekable_open(inode, filp);



out_path:
@@ -386,6 +389,7 @@ out_priv: 
out_use:

	clear_bit(MON_IN_USE, &mon_in_use);

out:

	unlock_kernel();

	return rc;

}