compat_ioctl: move drivers to compat_ptr_ioctl

Each of these drivers has a copy of the same trivial helper function to
convert the pointer argument and then call the native ioctl handler.

We now have a generic implementation of that, so use it.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 1 insertions, 11 deletions

diff --git a/drivers/vhost/test.c b/drivers/vhost/test.c
index 7804869c6a31..ec58a3330e5e 100644
--- a/drivers/vhost/test.c
+++ b/drivers/vhost/test.c
@@ -302,21 +302,11 @@ static long vhost_test_ioctl(struct file *f, unsigned int ioctl,
 	}
 }
 
-#ifdef CONFIG_COMPAT
-static long vhost_test_compat_ioctl(struct file *f, unsigned int ioctl,
-				   unsigned long arg)
-{
-	return vhost_test_ioctl(f, ioctl, (unsigned long)compat_ptr(arg));
-}
-#endif
-
 static const struct file_operations vhost_test_fops = {
 	.owner          = THIS_MODULE,
 	.release        = vhost_test_release,
 	.unlocked_ioctl = vhost_test_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl   = vhost_test_compat_ioctl,
-#endif
+	.compat_ioctl   = compat_ptr_ioctl,
 	.open           = vhost_test_open,
 	.llseek		= noop_llseek,
 };