[PATCH v1 07/18] vfio/ccw: Flatten MDEV device (un)register

[Eric Farman <farman@xxxxxxxxxxxxx>]

The vfio_ccw_mdev_(un)reg routines are merely vfio-ccw routines that
pass control to mdev_(un)register_device. Since there's only one
caller of each, let's just call the mdev routines directly.

Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx>
---
 drivers/s390/cio/vfio_ccw_drv.c     |  4 ++--
 drivers/s390/cio/vfio_ccw_ops.c     | 12 +-----------
 drivers/s390/cio/vfio_ccw_private.h |  4 +---
 3 files changed, 4 insertions(+), 16 deletions(-)

diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 9d817aa2f1c4..3784eb4cda85 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -239,7 +239,7 @@ static int vfio_ccw_sch_probe(struct subchannel *sch)
 
 	private->state = VFIO_CCW_STATE_STANDBY;
 
-	ret = vfio_ccw_mdev_reg(sch);
+	ret = mdev_register_device(&sch->dev, &vfio_ccw_mdev_ops);
 	if (ret)
 		goto out_disable;
 
@@ -261,7 +261,7 @@ static void vfio_ccw_sch_remove(struct subchannel *sch)
 	struct vfio_ccw_private *private = dev_get_drvdata(&sch->dev);
 
 	vfio_ccw_sch_quiesce(sch);
-	vfio_ccw_mdev_unreg(sch);
+	mdev_unregister_device(&sch->dev);
 
 	dev_set_drvdata(&sch->dev, NULL);
 
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 4a64c176facb..497e1b7ffd61 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -656,18 +656,8 @@ struct mdev_driver vfio_ccw_mdev_driver = {
 	.remove = vfio_ccw_mdev_remove,
 };
 
-static const struct mdev_parent_ops vfio_ccw_mdev_ops = {
+const struct mdev_parent_ops vfio_ccw_mdev_ops = {
 	.owner			= THIS_MODULE,
 	.device_driver		= &vfio_ccw_mdev_driver,
 	.supported_type_groups  = mdev_type_groups,
 };
-
-int vfio_ccw_mdev_reg(struct subchannel *sch)
-{
-	return mdev_register_device(&sch->dev, &vfio_ccw_mdev_ops);
-}
-
-void vfio_ccw_mdev_unreg(struct subchannel *sch)
-{
-	mdev_unregister_device(&sch->dev);
-}
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 5c128eec596b..2e0744ac6492 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -117,12 +117,10 @@ struct vfio_ccw_private {
 	struct work_struct	crw_work;
 } __aligned(8);
 
-extern int vfio_ccw_mdev_reg(struct subchannel *sch);
-extern void vfio_ccw_mdev_unreg(struct subchannel *sch);
-
 extern int vfio_ccw_sch_quiesce(struct subchannel *sch);
 
 extern struct mdev_driver vfio_ccw_mdev_driver;
+extern const struct mdev_parent_ops vfio_ccw_mdev_ops;
 
 /*
  * States of the device statemachine.
-- 
2.32.0