1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index d3f1a087ece..02362eccc58 100644
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -18,11 +18,12 @@
 #include <linux/kthread.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/memstick.h>
 
 #define DRIVER_NAME "mspro_block"
 
+static DEFINE_MUTEX(mspro_block_mutex);
 static int major;
 module_param(major, int, 0644);
 
@@ -180,7 +181,7 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
         struct mspro_block_data *msb = disk->private_data;
         int rc = -ENXIO;
 
-        lock_kernel();
+        mutex_lock(&mspro_block_mutex);
         mutex_lock(&mspro_block_disk_lock);
 
         if (msb && msb->card) {
@@ -192,7 +193,7 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
         }
 
         mutex_unlock(&mspro_block_disk_lock);
-        unlock_kernel();
+        mutex_unlock(&mspro_block_mutex);
 
         return rc;
 }
@@ -225,9 +226,9 @@ static int mspro_block_disk_release(struct gendisk *disk)
 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 {
         int ret;
-        lock_kernel();
+        mutex_lock(&mspro_block_mutex);
         ret = mspro_block_disk_release(disk);
-        unlock_kernel();
+        mutex_unlock(&mspro_block_mutex);
         return ret;
 }