1 files changed, 9 insertions, 8 deletions

diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index 4457b494882a..635f25dd9e10 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -152,9 +152,10 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_LUN, D_DLY};
 #include <linux/spinlock.h>
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <asm/uaccess.h>
 
+static DEFINE_MUTEX(pf_mutex);
 static DEFINE_SPINLOCK(pf_spin_lock);
 
 module_param(verbose, bool, 0644);
@@ -302,7 +303,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode)
         struct pf_unit *pf = bdev->bd_disk->private_data;
         int ret;
 
-        lock_kernel();
+        mutex_lock(&pf_mutex);
         pf_identify(pf);
 
         ret = -ENODEV;
@@ -318,7 +319,7 @@ static int pf_open(struct block_device *bdev, fmode_t mode)
         if (pf->removable)
                 pf_lock(pf, 1);
 out:
-        unlock_kernel();
+        mutex_unlock(&pf_mutex);
         return ret;
 }
 
@@ -349,9 +350,9 @@ static int pf_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, u
 
         if (pf->access != 1)
                 return -EBUSY;
-        lock_kernel();
+        mutex_lock(&pf_mutex);
         pf_eject(pf);
-        unlock_kernel();
+        mutex_unlock(&pf_mutex);
 
         return 0;
 }
@@ -360,9 +361,9 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
 {
         struct pf_unit *pf = disk->private_data;
 
-        lock_kernel();
+        mutex_lock(&pf_mutex);
         if (pf->access <= 0) {
-                unlock_kernel();
+                mutex_unlock(&pf_mutex);
                 return -EINVAL;
         }
 
@@ -371,7 +372,7 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
         if (!pf->access && pf->removable)
                 pf_lock(pf, 0);
 
-        unlock_kernel();
+        mutex_unlock(&pf_mutex);
         return 0;
 
 }