1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/block/DAC960.c b/drivers/block/DAC960.c
index c5f22bb0a48e..4e2c367fec11 100644
--- a/drivers/block/DAC960.c
+++ b/drivers/block/DAC960.c
@@ -79,23 +79,28 @@ static int DAC960_open(struct block_device *bdev, fmode_t mode)
         struct gendisk *disk = bdev->bd_disk;
         DAC960_Controller_T *p = disk->queue->queuedata;
         int drive_nr = (long)disk->private_data;
+        int ret = -ENXIO;
 
+        lock_kernel();
         if (p->FirmwareType == DAC960_V1_Controller) {
                 if (p->V1.LogicalDriveInformation[drive_nr].
                     LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
-                        return -ENXIO;
+                        goto out;
         } else {
                 DAC960_V2_LogicalDeviceInfo_T *i =
                         p->V2.LogicalDeviceInformation[drive_nr];
                 if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
-                        return -ENXIO;
+                        goto out;
         }
 
         check_disk_change(bdev);
 
         if (!get_capacity(p->disks[drive_nr]))
-                return -ENXIO;
-        return 0;
+                goto out;
+        ret = 0;
+out:
+        unlock_kernel();
+        return ret;
 }
 
 static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)