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authorArnd Bergmann <arnd@arndb.de>2008-05-20 19:15:42 +0200
committerJonathan Corbet <corbet@lwn.net>2008-06-20 14:05:55 -0600
commit122bc5eaf81a3870f6cc00d2e5e97f32f92e636b (patch)
tree71da3dd66fb3438dc01771ca3250b5e279246388 /arch
parent556889a4ae89d5f2adf98cac58ecf9326b0d0297 (diff)
bvme6000-rtc: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/m68k/bvme6000/rtc.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/m68k/bvme6000/rtc.c b/arch/m68k/bvme6000/rtc.c
index a812d03879f8..e8ac3f7d72df 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;
}