From 122bc5eaf81a3870f6cc00d2e5e97f32f92e636b Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 19:15:42 +0200
Subject: [PATCH] bvme6000-rtc: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/m68k/bvme6000/rtc.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/m68k/bvme6000/rtc.c b/arch/m68k/bvme6000/rtc.c
index a812d03879f..e8ac3f7d72d 100644
--- a/arch/m68k/bvme6000/rtc.c
+++ b/arch/m68k/bvme6000/rtc.c
@@ -10,6 +10,7 @@
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/ioport.h>
 #include <linux/capability.h>
 #include <linux/fcntl.h>
@@ -140,10 +141,14 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 
 static int rtc_open(struct inode *inode, struct file *file)
 {
-	if(rtc_status)
+	lock_kernel();
+	if(rtc_status) {
+		unlock_kernel();
 		return -EBUSY;
+	}
 
 	rtc_status = 1;
+	unlock_kernel();
 	return 0;
 }
 
-- 
2.41.1