[S390] dasd: enable compat ioctls

[linux-block.git] / drivers / s390 / block / dasd_ioctl.c

diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index b82d816d9ef7adda1d7d9ddd3c6f463666dc041b..16e6ba462cb6d673f6122e93018d89a3c7d266ce 100644 (file)
--- 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;
+}