[media] stk-webcam: add support for struct v4l2_device

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Arvydas Sidorenko <asido4@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/stkwebcam/stk-webcam.c

@@ -1294,7 +1294,7 @@ static int stk_register_video_device(struct stk_camera *dev)
 
 	dev->vdev = stk_v4l_data;
 	dev->vdev.debug = debug;
-	dev->vdev.parent = &dev->interface->dev;
+	dev->vdev.v4l2_dev = &dev->v4l2_dev;
 	err = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
 	if (err)
 		STK_ERROR("v4l registration failed\n");
@@ -1323,6 +1323,12 @@ static int stk_camera_probe(struct usb_interface *interface,
 		STK_ERROR("Out of memory !\n");
 		return -ENOMEM;
 	}
+	err = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
+	if (err < 0) {
+		dev_err(&udev->dev, "couldn't register v4l2_device\n");
+		kfree(dev);
+		return err;
+	}
 
 	spin_lock_init(&dev->spinlock);
 	init_waitqueue_head(&dev->wait_frame);
@@ -1383,6 +1389,7 @@ static int stk_camera_probe(struct usb_interface *interface,
 	return 0;
 
 error:
+	v4l2_device_unregister(&dev->v4l2_dev);
 	kfree(dev);
 	return err;
 }
@@ -1400,6 +1407,7 @@ static void stk_camera_disconnect(struct usb_interface *interface)
 		 video_device_node_name(&dev->vdev));
 
 	video_unregister_device(&dev->vdev);
+	v4l2_device_unregister(&dev->v4l2_dev);
 }
 
 #ifdef CONFIG_PM

drivers/media/usb/stkwebcam/stk-webcam.h

@@ -23,6 +23,7 @@
 #define STKWEBCAM_H
 
 #include <linux/usb.h>
+#include <media/v4l2-device.h>
 #include <media/v4l2-common.h>
 
 #define DRIVER_VERSION		"v0.0.1"
@@ -91,6 +92,7 @@ struct regval {
 };
 
 struct stk_camera {
+	struct v4l2_device v4l2_dev;
 	struct video_device vdev;
 	struct usb_device *udev;
 	struct usb_interface *interface;