1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/macintosh/adb.c b/drivers/macintosh/adb.c
index bf64e49d996a..75049e765191 100644
--- a/drivers/macintosh/adb.c
+++ b/drivers/macintosh/adb.c
@@ -24,7 +24,6 @@
 #include <linux/fs.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
-#include <linux/smp_lock.h>
 #include <linux/adb.h>
 #include <linux/cuda.h>
 #include <linux/pmu.h>
@@ -55,6 +54,7 @@ extern struct adb_driver adb_iop_driver;
 extern struct adb_driver via_pmu_driver;
 extern struct adb_driver macio_adb_driver;
 
+static DEFINE_MUTEX(adb_mutex);
 static struct adb_driver *adb_driver_list[] = {
 #ifdef CONFIG_ADB_MACII
         &via_macii_driver,
@@ -647,7 +647,7 @@ static int adb_open(struct inode *inode, struct file *file)
         struct adbdev_state *state;
         int ret = 0;
 
-        lock_kernel();
+        mutex_lock(&adb_mutex);
         if (iminor(inode) > 0 || adb_controller == NULL) {
                 ret = -ENXIO;
                 goto out;
@@ -665,7 +665,7 @@ static int adb_open(struct inode *inode, struct file *file)
         state->inuse = 1;
 
 out:
-        unlock_kernel();
+        mutex_unlock(&adb_mutex);
         return ret;
 }
 
@@ -674,7 +674,7 @@ static int adb_release(struct inode *inode, struct file *file)
         struct adbdev_state *state = file->private_data;
         unsigned long flags;
 
-        lock_kernel();
+        mutex_lock(&adb_mutex);
         if (state) {
                 file->private_data = NULL;
                 spin_lock_irqsave(&state->lock, flags);
@@ -687,7 +687,7 @@ static int adb_release(struct inode *inode, struct file *file)
                         spin_unlock_irqrestore(&state->lock, flags);
                 }
         }
-        unlock_kernel();
+        mutex_unlock(&adb_mutex);
         return 0;
 }