[PATCH 14/19] powerpc: hvc enablement for CMO

=46rom: Robert Jennings [off-list ref]

Define a get_io_entitlement function so that it can function in a
Cooperative Memory Overcommitment (CMO) environment (it returns 0 to
indicate that no IO entitlement is required, as the driver does not
perform DMA operations).

Signed-off-by: Robert Jennings <redacted>

---
 drivers/char/hvc_vio.c |    6 ++++++
 1 file changed, 6 insertions(+)

Index: b/drivers/char/hvc_vio.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

--- a/drivers/char/hvc_vio.c
+++ b/drivers/char/hvc_vio.c

@@ -82,6 +82,11 @@ static struct hv_ops hvc_get_put_ops =3D {
 	.put_chars =3D hvc_put_chars,
 };

=20
+unsigned long hvc_io_entitlement(struct vio_dev *vdev)
+{
+	return 0;
+}
+
 static int __devinit hvc_vio_probe(struct vio_dev *vdev,
 				const struct vio_device_id *id)
 {

@@ -111,6 +116,7 @@ static struct vio_driver hvc_vio_driver=20
 	.id_table	=3D hvc_driver_table,
 	.probe		=3D hvc_vio_probe,
 	.remove		=3D hvc_vio_remove,
+	.get_io_entitlement =3D hvc_io_entitlement,
 	.driver		=3D {
 		.name	=3D hvc_driver_name,
 		.owner	=3D THIS_MODULE,