1 files changed, 24 insertions, 10 deletions

diff --git a/drivers/input/misc/hp_sdc_rtc.c b/drivers/input/misc/hp_sdc_rtc.c
index ad730e15afc0..e00a1cc79c0a 100644
--- a/drivers/input/misc/hp_sdc_rtc.c
+++ b/drivers/input/misc/hp_sdc_rtc.c
@@ -43,6 +43,7 @@
 #include <linux/proc_fs.h>
 #include <linux/poll.h>
 #include <linux/rtc.h>
+#include <linux/smp_lock.h>
 #include <linux/semaphore.h>
 
 MODULE_AUTHOR("Brian S. Julin <bri@calyx.com>");
@@ -64,8 +65,8 @@ static DECLARE_WAIT_QUEUE_HEAD(hp_sdc_rtc_wait);
 static ssize_t hp_sdc_rtc_read(struct file *file, char __user *buf,
                                size_t count, loff_t *ppos);
 
-static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file,
-                            unsigned int cmd, unsigned long arg);
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+                                      unsigned int cmd, unsigned long arg);
 
 static unsigned int hp_sdc_rtc_poll(struct file *file, poll_table *wait);
 
@@ -512,7 +513,7 @@ static int hp_sdc_rtc_read_proc(char *page, char **start, off_t off,
         return len;
 }
 
-static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file, 
+static int hp_sdc_rtc_ioctl(struct file *file, 
                             unsigned int cmd, unsigned long arg)
 {
 #if 1
@@ -659,14 +660,27 @@ static int hp_sdc_rtc_ioctl(struct inode *inode, struct file *file,
 #endif
 }
 
+static long hp_sdc_rtc_unlocked_ioctl(struct file *file,
+                                      unsigned int cmd, unsigned long arg)
+{
+        int ret;
+
+        lock_kernel();
+        ret = hp_sdc_rtc_ioctl(file, cmd, arg);
+        unlock_kernel();
+
+        return ret;
+}
+
+
 static const struct file_operations hp_sdc_rtc_fops = {
-        .owner =        THIS_MODULE,
-        .llseek =       no_llseek,
-        .read =         hp_sdc_rtc_read,
-        .poll =         hp_sdc_rtc_poll,
-        .ioctl =        hp_sdc_rtc_ioctl,
-        .open =         hp_sdc_rtc_open,
-        .fasync =       hp_sdc_rtc_fasync,
+        .owner =                THIS_MODULE,
+        .llseek =               no_llseek,
+        .read =                 hp_sdc_rtc_read,
+        .poll =                 hp_sdc_rtc_poll,
+        .unlocked_ioctl =       hp_sdc_rtc_ioctl,
+        .open =                 hp_sdc_rtc_open,
+        .fasync =               hp_sdc_rtc_fasync,
 };
 
 static struct miscdevice hp_sdc_rtc_dev = {