From 4a7e79a7deab9718d51dc8d3ee938bd0eb789b7b Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 19:15:57 +0200
Subject: [PATCH] hdpu_cpustate: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/misc/hdpuftrs/hdpu_cpustate.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/hdpuftrs/hdpu_cpustate.c b/drivers/misc/hdpuftrs/hdpu_cpustate.c
index ff51ab67231c..176fe4e09d3f 100644
--- a/drivers/misc/hdpuftrs/hdpu_cpustate.c
+++ b/drivers/misc/hdpuftrs/hdpu_cpustate.c
@@ -17,6 +17,7 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/spinlock.h>
+#include <linux/smp_lock.h>
 #include <linux/miscdevice.h>
 #include <linux/proc_fs.h>
 #include <linux/hdpu_features.h>
@@ -151,7 +152,13 @@ static ssize_t cpustate_write(struct file *file, const char *buf,
 
 static int cpustate_open(struct inode *inode, struct file *file)
 {
-	return cpustate_get_ref((file->f_flags & O_EXCL));
+	int ret;
+
+	lock_kernel();
+	ret = cpustate_get_ref((file->f_flags & O_EXCL));
+	unlock_kernel();
+
+	return ret;
 }
 
 static int cpustate_release(struct inode *inode, struct file *file)
-- 
2.34.1