1 files changed, 20 insertions, 6 deletions

diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c
index c059aab3006b..4457b494882a 100644
--- a/drivers/block/paride/pf.c
+++ b/drivers/block/paride/pf.c
@@ -152,6 +152,7 @@ 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 <asm/uaccess.h>
 
 static DEFINE_SPINLOCK(pf_spin_lock);
@@ -266,7 +267,7 @@ static const struct block_device_operations pf_fops = {
         .owner          = THIS_MODULE,
         .open           = pf_open,
         .release        = pf_release,
-        .locked_ioctl   = pf_ioctl,
+        .ioctl          = pf_ioctl,
         .getgeo         = pf_getgeo,
         .media_changed  = pf_check_media,
 };
@@ -299,20 +300,26 @@ static void __init pf_init_units(void)
 static int pf_open(struct block_device *bdev, fmode_t mode)
 {
         struct pf_unit *pf = bdev->bd_disk->private_data;
+        int ret;
 
+        lock_kernel();
         pf_identify(pf);
 
+        ret = -ENODEV;
         if (pf->media_status == PF_NM)
-                return -ENODEV;
+                goto out;
 
+        ret = -EROFS;
         if ((pf->media_status == PF_RO) && (mode & FMODE_WRITE))
-                return -EROFS;
+                goto out;
 
+        ret = 0;
         pf->access++;
         if (pf->removable)
                 pf_lock(pf, 1);
-
-        return 0;
+out:
+        unlock_kernel();
+        return ret;
 }
 
 static int pf_getgeo(struct block_device *bdev, struct hd_geometry *geo)
@@ -342,7 +349,10 @@ static int pf_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, u
 
         if (pf->access != 1)
                 return -EBUSY;
+        lock_kernel();
         pf_eject(pf);
+        unlock_kernel();
+
         return 0;
 }
 
@@ -350,14 +360,18 @@ static int pf_release(struct gendisk *disk, fmode_t mode)
 {
         struct pf_unit *pf = disk->private_data;
 
-        if (pf->access <= 0)
+        lock_kernel();
+        if (pf->access <= 0) {
+                unlock_kernel();
                 return -EINVAL;
+        }
 
         pf->access--;
 
         if (!pf->access && pf->removable)
                 pf_lock(pf, 0);
 
+        unlock_kernel();
         return 0;
 
 }