[S390] dasd: enable compat ioctls

All of the ioctls are compatible. Just enable them.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 14 insertions, 3 deletions

diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index b82d816d9ef7..16e6ba462cb6 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -365,9 +365,9 @@ static int dasd_ioctl_readall_cmb(struct dasd_block *block, unsigned int cmd,
         return ret;
 }
 
-int
-dasd_ioctl(struct block_device *bdev, fmode_t mode,
-           unsigned int cmd, unsigned long arg)
+static int
+dasd_do_ioctl(struct block_device *bdev, fmode_t mode,
+              unsigned int cmd, unsigned long arg)
 {
         struct dasd_block *block = bdev->bd_disk->private_data;
         void __user *argp = (void __user *)arg;
@@ -420,3 +420,14 @@ dasd_ioctl(struct block_device *bdev, fmode_t mode,
                 return -EINVAL;
         }
 }
+
+int dasd_ioctl(struct block_device *bdev, fmode_t mode,
+               unsigned int cmd, unsigned long arg)
+{
+        int rc;
+
+        lock_kernel();
+        rc = dasd_do_ioctl(bdev, mode, cmd, arg);
+        unlock_kernel();
+        return rc;
+}