aboutsummaryrefslogtreecommitdiff
path: root/arch/m68k/mvme16x
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2008-05-20 19:16:22 +0200
committerJonathan Corbet <corbet@lwn.net>2008-07-02 15:06:23 -0600
commite3e8e59dcd63621e3ade03083c17b6363a8e2dc8 (patch)
tree696f8d6eb20d7b6f00a5ec72d3c41bd4941913c7 /arch/m68k/mvme16x
parentf9c8154f367d471f1af56742fe8534f8458adb98 (diff)
downloadlinux-e3e8e59dcd63621e3ade03083c17b6363a8e2dc8.tar.gz
mvme16x-rtc: BKL pushdown
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/m68k/mvme16x')
-rw-r--r--arch/m68k/mvme16x/rtc.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/m68k/mvme16x/rtc.c b/arch/m68k/mvme16x/rtc.c
index e341387787a..432a9f13b2e 100644
--- a/arch/m68k/mvme16x/rtc.c
+++ b/arch/m68k/mvme16x/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>
@@ -127,11 +128,14 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
static int rtc_open(struct inode *inode, struct file *file)
{
+ lock_kernel();
if( !atomic_dec_and_test(&rtc_ready) )
{
atomic_inc( &rtc_ready );
+ unlock_kernel();
return -EBUSY;
}
+ unlock_kernel();
return 0;
}