Signed-off-by: Arnd Bergmann <arnd@arndb.de>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/string.h>
static int mini_rtc_open(struct inode *inode, struct file *file)
{
static int mini_rtc_open(struct inode *inode, struct file *file)
{
- if (mini_rtc_status & RTC_IS_OPEN)
+ lock_kernel();
+ if (mini_rtc_status & RTC_IS_OPEN) {
+ unlock_kernel();
mini_rtc_status |= RTC_IS_OPEN;
mini_rtc_status |= RTC_IS_OPEN;