linux-kernel - [tip:bkl/arch] s390: Remove BKL from prng

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Date:	Wed, 14 Oct 2009 15:45:18 GMT
From:	tip-bot for Thomas Gleixner <tglx@...utronix.de>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	jang@...ux.vnet.ibm.com, schwidefsky@...ibm.com, tglx@...utronix.de
Subject: [tip:bkl/arch] s390: Remove BKL from prng

Commit-ID:  ca1b82ba0888e742a7efdb89ed8e2aab453e091f
Gitweb:     http://git.kernel.org/tip/ca1b82ba0888e742a7efdb89ed8e2aab453e091f
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Sat, 10 Oct 2009 10:21:03 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 14 Oct 2009 15:35:50 +0200

s390: Remove BKL from prng

cycle_kernel_lock() was added during the big BKL pushdown. It should
ensure the serializiation against driver init code. In this case there
is nothing to serialize. Remove it.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
LKML-Reference: <20091010153349.601625576@...utronix.de>
Acked-by: Jan Glauber <jang@...ux.vnet.ibm.com>

---
 arch/s390/crypto/prng.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/s390/crypto/prng.c b/arch/s390/crypto/prng.c
index b49c00c..a320990 100644
--- a/arch/s390/crypto/prng.c
+++ b/arch/s390/crypto/prng.c
@@ -6,7 +6,6 @@
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/smp_lock.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
@@ -49,7 +48,6 @@ static unsigned char parm_block[32] = {
 
 static int prng_open(struct inode *inode, struct file *file)
 {
-	cycle_kernel_lock();
 	return nonseekable_open(inode, file);
 }
 
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