3w-xxxx: Pass through compat mode ioctls

This allows 32-bit userspace tools (tw_cli, smartctl) to work on a
64-bit system.  The command buffer is opaque to us, so, no word size
problems.

Signed-off-by: Ryan C. Underwood <nemesis@icequake.net>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/scsi/3w-xxxx.c b/drivers/scsi/3w-xxxx.c
index 2940bd769936..25aba1613e21 100644
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -1045,6 +1045,9 @@ static int tw_chrdev_open(struct inode *inode, struct file *file)
 static const struct file_operations tw_fops = {
         .owner          = THIS_MODULE,
         .unlocked_ioctl = tw_chrdev_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl   = tw_chrdev_ioctl,
+#endif
         .open           = tw_chrdev_open,
         .release        = NULL,
         .llseek         = noop_llseek,