3 files changed, 7 insertions, 50 deletions

diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c
index e90c8552cc31..344c2901a82b 100644
--- a/samples/vfio-mdev/mbochs.c
+++ b/samples/vfio-mdev/mbochs.c
@@ -1412,12 +1412,7 @@ static struct mdev_driver mbochs_driver = {
 	},
 	.probe = mbochs_probe,
 	.remove	= mbochs_remove,
-};
-
-static const struct mdev_parent_ops mdev_fops = {
-	.owner			= THIS_MODULE,
-	.device_driver		= &mbochs_driver,
-	.supported_type_groups	= mdev_type_groups,
+	.supported_type_groups = mdev_type_groups,
 };
 
 static const struct file_operations vd_fops = {
@@ -1462,7 +1457,7 @@ static int __init mbochs_dev_init(void)
 	if (ret)
 		goto err_class;
 
-	ret = mdev_register_device(&mbochs_dev, &mdev_fops);
+	ret = mdev_register_device(&mbochs_dev, &mbochs_driver);
 	if (ret)
 		goto err_device;
 
diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c
index fe5d43e797b6..e8c46eb2e246 100644
--- a/samples/vfio-mdev/mdpy.c
+++ b/samples/vfio-mdev/mdpy.c
@@ -723,12 +723,7 @@ static struct mdev_driver mdpy_driver = {
 	},
 	.probe = mdpy_probe,
 	.remove	= mdpy_remove,
-};
-
-static const struct mdev_parent_ops mdev_fops = {
-	.owner			= THIS_MODULE,
-	.device_driver          = &mdpy_driver,
-	.supported_type_groups	= mdev_type_groups,
+	.supported_type_groups = mdev_type_groups,
 };
 
 static const struct file_operations vd_fops = {
@@ -771,7 +766,7 @@ static int __init mdpy_dev_init(void)
 	if (ret)
 		goto err_class;
 
-	ret = mdev_register_device(&mdpy_dev, &mdev_fops);
+	ret = mdev_register_device(&mdpy_dev, &mdpy_driver);
 	if (ret)
 		goto err_device;
 
diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c
index a0e1a469bd47..f42a59ed2e3f 100644
--- a/samples/vfio-mdev/mtty.c
+++ b/samples/vfio-mdev/mtty.c
@@ -1208,37 +1208,10 @@ static long mtty_ioctl(struct vfio_device *vdev, unsigned int cmd,
 }
 
 static ssize_t
-sample_mtty_dev_show(struct device *dev, struct device_attribute *attr,
-		     char *buf)
-{
-	return sprintf(buf, "This is phy device\n");
-}
-
-static DEVICE_ATTR_RO(sample_mtty_dev);
-
-static struct attribute *mtty_dev_attrs[] = {
-	&dev_attr_sample_mtty_dev.attr,
-	NULL,
-};
-
-static const struct attribute_group mtty_dev_group = {
-	.name  = "mtty_dev",
-	.attrs = mtty_dev_attrs,
-};
-
-static const struct attribute_group *mtty_dev_groups[] = {
-	&mtty_dev_group,
-	NULL,
-};
-
-static ssize_t
 sample_mdev_dev_show(struct device *dev, struct device_attribute *attr,
 		     char *buf)
 {
-	if (mdev_from_dev(dev))
-		return sprintf(buf, "This is MDEV %s\n", dev_name(dev));
-
-	return sprintf(buf, "\n");
+	return sprintf(buf, "This is MDEV %s\n", dev_name(dev));
 }
 
 static DEVICE_ATTR_RO(sample_mdev_dev);
@@ -1328,13 +1301,7 @@ static struct mdev_driver mtty_driver = {
 	},
 	.probe = mtty_probe,
 	.remove	= mtty_remove,
-};
-
-static const struct mdev_parent_ops mdev_fops = {
-	.owner                  = THIS_MODULE,
-	.device_driver		= &mtty_driver,
-	.dev_attr_groups        = mtty_dev_groups,
-	.supported_type_groups  = mdev_type_groups,
+	.supported_type_groups = mdev_type_groups,
 };
 
 static void mtty_device_release(struct device *dev)
@@ -1385,7 +1352,7 @@ static int __init mtty_dev_init(void)
 	if (ret)
 		goto err_class;
 
-	ret = mdev_register_device(&mtty_dev.dev, &mdev_fops);
+	ret = mdev_register_device(&mtty_dev.dev, &mtty_driver);
 	if (ret)
 		goto err_device;
 	return 0;