1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c
index 62e68707b07f..50ab431b24eb 100644
--- a/drivers/mtd/mtd_blkdevs.c
+++ b/drivers/mtd/mtd_blkdevs.c
@@ -29,7 +29,6 @@
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
 #include <linux/spinlock.h>
-#include <linux/smp_lock.h>
 #include <linux/hdreg.h>
 #include <linux/init.h>
 #include <linux/mutex.h>
@@ -38,6 +37,7 @@
 
 #include "mtdcore.h"
 
+static DEFINE_MUTEX(mtd_blkdevs_mutex);
 static LIST_HEAD(blktrans_majors);
 static DEFINE_MUTEX(blktrans_ref_mutex);
 
@@ -181,7 +181,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
         if (!dev)
                 return -ERESTARTSYS; /* FIXME: busy loop! -arnd*/
 
-        lock_kernel();
+        mutex_lock(&mtd_blkdevs_mutex);
         mutex_lock(&dev->lock);
 
         if (!dev->mtd) {
@@ -198,7 +198,7 @@ static int blktrans_open(struct block_device *bdev, fmode_t mode)
 unlock:
         mutex_unlock(&dev->lock);
         blktrans_dev_put(dev);
-        unlock_kernel();
+        mutex_unlock(&mtd_blkdevs_mutex);
         return ret;
 }
 
@@ -210,7 +210,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
         if (!dev)
                 return ret;
 
-        lock_kernel();
+        mutex_lock(&mtd_blkdevs_mutex);
         mutex_lock(&dev->lock);
 
         /* Release one reference, we sure its not the last one here*/
@@ -223,7 +223,7 @@ static int blktrans_release(struct gendisk *disk, fmode_t mode)
 unlock:
         mutex_unlock(&dev->lock);
         blktrans_dev_put(dev);
-        unlock_kernel();
+        mutex_unlock(&mtd_blkdevs_mutex);
         return ret;
 }
 
@@ -256,7 +256,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
         if (!dev)
                 return ret;
 
-        lock_kernel();
+        mutex_lock(&mtd_blkdevs_mutex);
         mutex_lock(&dev->lock);
 
         if (!dev->mtd)
@@ -271,7 +271,7 @@ static int blktrans_ioctl(struct block_device *bdev, fmode_t mode,
         }
 unlock:
         mutex_unlock(&dev->lock);
-        unlock_kernel();
+        mutex_unlock(&mtd_blkdevs_mutex);
         blktrans_dev_put(dev);
         return ret;
 }