1 files changed, 5 insertions, 3 deletions

diff --git a/arch/cris/arch-v10/drivers/ds1302.c b/arch/cris/arch-v10/drivers/ds1302.c
index 884275629ef7..3d655dcc65da 100644
--- a/arch/cris/arch-v10/drivers/ds1302.c
+++ b/arch/cris/arch-v10/drivers/ds1302.c
@@ -19,7 +19,7 @@
 #include <linux/module.h>
 #include <linux/miscdevice.h>
 #include <linux/delay.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/bcd.h>
 #include <linux/capability.h>
 
@@ -34,6 +34,7 @@
 
 #define RTC_MAJOR_NR 121 /* local major, change later */
 
+static DEFINE_MUTEX(ds1302_mutex);
 static const char ds1302_name[] = "ds1302";
 
 /* The DS1302 might be connected to different bits on different products. 
@@ -357,9 +358,9 @@ static long rtc_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned lon
 {
         int ret;
 
-        lock_kernel();
+        mutex_lock(&ds1302_mutex);
         ret = rtc_ioctl(file, cmd, arg);
-        unlock_kernel();
+        mutex_unlock(&ds1302_mutex);
 
         return ret;
 }
@@ -387,6 +388,7 @@ print_rtc_status(void)
 static const struct file_operations rtc_fops = {
         .owner          = THIS_MODULE,
         .unlocked_ioctl = rtc_unlocked_ioctl,
+        .llseek         = noop_llseek,
 }; 
 
 /* Probe for the chip by writing something to its RAM and try reading it back. */