1 files changed, 6 insertions, 5 deletions

diff --git a/arch/cris/arch-v32/drivers/mach-a3/gpio.c b/arch/cris/arch-v32/drivers/mach-a3/gpio.c
index 2dcd27adbad4..50d1885c4794 100644
--- a/arch/cris/arch-v32/drivers/mach-a3/gpio.c
+++ b/arch/cris/arch-v32/drivers/mach-a3/gpio.c
@@ -23,7 +23,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/spinlock.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 
 #include <asm/etraxgpio.h>
 #include <hwregs/reg_map.h>
@@ -66,6 +66,7 @@ static int dp_cnt;
 #define DP(x)
 #endif
 
+static DEFINE_MUTEX(gpio_mutex);
 static char gpio_name[] = "etrax gpio";
 
 #ifdef CONFIG_ETRAX_VIRTUAL_GPIO
@@ -391,7 +392,7 @@ static int gpio_open(struct inode *inode, struct file *filp)
         if (!priv)
                 return -ENOMEM;
 
-        lock_kernel();
+        mutex_lock(&gpio_mutex);
         memset(priv, 0, sizeof(*priv));
 
         priv->minor = p;
@@ -414,7 +415,7 @@ static int gpio_open(struct inode *inode, struct file *filp)
                 spin_unlock_irq(&gpio_lock);
         }
 
-        unlock_kernel();
+        mutex_unlock(&gpio_mutex);
         return 0;
 }
 
@@ -667,9 +668,9 @@ static long gpio_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        long ret;
 
-       lock_kernel();
+       mutex_lock(&gpio_mutex);
        ret = gpio_ioctl_unlocked(file, cmd, arg);
-       unlock_kernel();
+       mutex_unlock(&gpio_mutex);
 
        return ret;
 }