1 files changed, 8 insertions, 5 deletions

diff --git a/drivers/char/applicom.c b/drivers/char/applicom.c
index a7424bf7eacf..63313a33ba5f 100644
--- a/drivers/char/applicom.c
+++ b/drivers/char/applicom.c
@@ -26,6 +26,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/errno.h>
+#include <linux/smp_lock.h>
 #include <linux/miscdevice.h>
 #include <linux/pci.h>
 #include <linux/wait.h>
@@ -106,8 +107,7 @@ static unsigned int DeviceErrorCount;	/* number of device error     */
 
 static ssize_t ac_read (struct file *, char __user *, size_t, loff_t *);
 static ssize_t ac_write (struct file *, const char __user *, size_t, loff_t *);
-static int ac_ioctl(struct inode *, struct file *, unsigned int,
-                    unsigned long);
+static long ac_ioctl(struct file *, unsigned int, unsigned long);
 static irqreturn_t ac_interrupt(int, void *);
 
 static const struct file_operations ac_fops = {
@@ -115,7 +115,7 @@ static const struct file_operations ac_fops = {
         .llseek = no_llseek,
         .read = ac_read,
         .write = ac_write,
-        .ioctl = ac_ioctl,
+        .unlocked_ioctl = ac_ioctl,
 };
 
 static struct miscdevice ac_miscdev = {
@@ -689,7 +689,7 @@ static irqreturn_t ac_interrupt(int vec, void *dev_instance)
 
 
 
-static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long ac_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
      
 {                               /* @ ADG ou ATO selon le cas */
         int i;
@@ -711,7 +711,8 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
                 kfree(adgl);
                 return -EFAULT;
         }
-        
+
+        lock_kernel();  
         IndexCard = adgl->num_card-1;
          
         if(cmd != 6 && ((IndexCard >= MAX_BOARD) || !apbs[IndexCard].RamIO)) {
@@ -721,6 +722,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
                         warncount--;
                 }
                 kfree(adgl);
+                unlock_kernel();
                 return -EINVAL;
         }
 
@@ -838,6 +840,7 @@ static int ac_ioctl(struct inode *inode, struct file *file, unsigned int cmd, un
         }
         Dummy = readb(apbs[IndexCard].RamIO + VERS);
         kfree(adgl);
+        unlock_kernel();
         return 0;
 }