From 9a8bd2f76cb78fd730337f1b3b9cbef101ce2dad Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 19:15:37 +0200
Subject: [PATCH] bf561-coreb: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/blackfin/mach-bf561/coreb.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/blackfin/mach-bf561/coreb.c b/arch/blackfin/mach-bf561/coreb.c
index 1b44e9e6dc3..852647801a0 100644
--- a/arch/blackfin/mach-bf561/coreb.c
+++ b/arch/blackfin/mach-bf561/coreb.c
@@ -32,6 +32,7 @@
 #include <linux/device.h>
 #include <linux/ioport.h>
 #include <linux/module.h>
+#include <linux/smp_lock.h>
 #include <linux/uaccess.h>
 #include <linux/fs.h>
 #include <asm/dma.h>
@@ -196,6 +197,7 @@ static loff_t coreb_lseek(struct file *file, loff_t offset, int origin)
 
 static int coreb_open(struct inode *inode, struct file *file)
 {
+	lock_kernel();
 	spin_lock_irq(&coreb_lock);
 
 	if (coreb_status & COREB_IS_OPEN)
@@ -204,10 +206,12 @@ static int coreb_open(struct inode *inode, struct file *file)
 	coreb_status |= COREB_IS_OPEN;
 
 	spin_unlock_irq(&coreb_lock);
+	unlock_kernel();
 	return 0;
 
  out_busy:
 	spin_unlock_irq(&coreb_lock);
+	unlock_kernel();
 	return -EBUSY;
 }
 
-- 
2.41.1