Request API requires a media node. Add one to the vim2m driver so we can
use requests with it.

Signed-off-by: Alexandre Courbot <acour...@chromium.org>
---
 drivers/media/platform/vim2m.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c
index b01fba020d5f..a32e8a7950eb 100644
--- a/drivers/media/platform/vim2m.c
+++ b/drivers/media/platform/vim2m.c
@@ -140,6 +140,9 @@ static struct vim2m_fmt *find_format(struct v4l2_format *f)
 struct vim2m_dev {
        struct v4l2_device      v4l2_dev;
        struct video_device     vfd;
+#ifdef CONFIG_MEDIA_CONTROLLER
+       struct media_device     mdev;
+#endif
 
        atomic_t                num_inst;
        struct mutex            dev_mutex;
@@ -1001,6 +1004,13 @@ static int vim2m_probe(struct platform_device *pdev)
 
        spin_lock_init(&dev->irqlock);
 
+#ifdef CONFIG_MEDIA_CONTROLLER
+       dev->mdev.dev = &pdev->dev;
+       strlcpy(dev->mdev.model, "vim2m", sizeof(dev->mdev.model));
+       media_device_init(&dev->mdev);
+       dev->v4l2_dev.mdev = &dev->mdev;
+#endif
+
        ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
        if (ret)
                return ret;
@@ -1034,6 +1044,13 @@ static int vim2m_probe(struct platform_device *pdev)
                goto err_m2m;
        }
 
+#ifdef CONFIG_MEDIA_CONTROLLER
+       /* Register the media device node */
+       ret = media_device_register(&dev->mdev);
+       if (ret)
+               goto err_m2m;
+#endif
+
        return 0;
 
 err_m2m:
@@ -1050,6 +1067,13 @@ static int vim2m_remove(struct platform_device *pdev)
        struct vim2m_dev *dev = platform_get_drvdata(pdev);
 
        v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+       if (media_devnode_is_registered(dev->mdev.devnode))
+               media_device_unregister(&dev->mdev);
+       media_device_cleanup(&dev->mdev);
+#endif
+
        v4l2_m2m_release(dev->m2m_dev);
        del_timer_sync(&dev->timer);
        video_unregister_device(&dev->vfd);
-- 
2.16.0.rc1.238.g530d649a79-goog

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