[media] mt9v032: register v4l2 asynchronous subdevice

Add support for registering the sensor subdevice using the v4l2-async API.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c
index 86c38338584706a10b97168f91150dad0e56973e..c8a40888a8e69cc75bce96e6631ce213284faaba 100644 (file)
--- a/drivers/media/i2c/mt9v032.c
+++ b/drivers/media/i2c/mt9v032.c
@@ -1010,10 +1010,19 @@ static int mt9v032_probe(struct i2c_client *client,
 
        mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE;
        ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0);
+       if (ret < 0)
+               goto err;
 
+       mt9v032->subdev.dev = &client->dev;
+       ret = v4l2_async_register_subdev(&mt9v032->subdev);
        if (ret < 0)
-               v4l2_ctrl_handler_free(&mt9v032->ctrls);
+               goto err;
+
+       return 0;
 
+err:
+       media_entity_cleanup(&mt9v032->subdev.entity);
+       v4l2_ctrl_handler_free(&mt9v032->ctrls);
        return ret;
 }
 
@@ -1022,6 +1031,7 @@ static int mt9v032_remove(struct i2c_client *client)
        struct v4l2_subdev *subdev = i2c_get_clientdata(client);
        struct mt9v032 *mt9v032 = to_mt9v032(subdev);
 
+       v4l2_async_unregister_subdev(subdev);
        v4l2_ctrl_handler_free(&mt9v032->ctrls);
        v4l2_device_unregister_subdev(subdev);
        media_entity_cleanup(&subdev->entity);