diff mbox series

[16/75] media: imx: capture: Register the video device after completing init

Message ID 20210105152852.5733-17-laurent.pinchart@ideasonboard.com (mailing list archive)
State New
Headers show
Series media: imx: Miscellaneous fixes and cleanups for i.MX7 | expand

Commit Message

Laurent Pinchart Jan. 5, 2021, 3:27 p.m. UTC
When the video device is registered, it can get used by userspace
immediately. Its initialization must thus be fully complete. Ensure this
by registering the video device after all initialization steps.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 drivers/staging/media/imx/imx-media-capture.c | 37 +++++++++----------
 1 file changed, 18 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index e22d98ce5d1e..335cb74baa4c 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -723,27 +723,13 @@  int imx_media_capture_device_register(struct imx_media_video_dev *vdev)
 
 	vfd->v4l2_dev = v4l2_dev;
 
-	ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
-	if (ret) {
-		dev_err(priv->dev, "Failed to register video device\n");
-		return ret;
-	}
-
-	/* create the link from the src_sd devnode pad to device node */
-	ret = media_create_pad_link(&sd->entity, priv->src_sd_pad,
-				    &vfd->entity, 0, 0);
-	if (ret) {
-		dev_err(priv->dev, "failed to create link to device node\n");
-		goto unreg;
-	}
-
 	/* setup default format */
 	fmt_src.pad = priv->src_sd_pad;
 	fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE;
 	ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt_src);
 	if (ret) {
 		dev_err(priv->dev, "failed to get src_sd format\n");
-		goto unreg;
+		return ret;
 	}
 
 	vdev->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@@ -754,16 +740,29 @@  int imx_media_capture_device_register(struct imx_media_video_dev *vdev)
 	vdev->cc = imx_media_find_pixel_format(vdev->fmt.fmt.pix.pixelformat,
 					       PIXFMT_SEL_ANY);
 
+	/* Register the video device. */
+	ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
+	if (ret) {
+		dev_err(priv->dev, "Failed to register video device\n");
+		return ret;
+	}
+
 	dev_info(priv->dev, "Registered %s as /dev/%s\n", vfd->name,
 		 video_device_node_name(vfd));
 
-	/* add vdev to the video device list */
+	/* Create the link from the src_sd devnode pad to device node. */
+	ret = media_create_pad_link(&sd->entity, priv->src_sd_pad,
+				    &vfd->entity, 0, 0);
+	if (ret) {
+		dev_err(priv->dev, "failed to create link to device node\n");
+		video_unregister_device(vfd);
+		return ret;
+	}
+
+	/* Add vdev to the video devices list. */
 	imx_media_add_video_device(priv->md, vdev);
 
 	return 0;
-unreg:
-	video_unregister_device(vfd);
-	return ret;
 }
 EXPORT_SYMBOL_GPL(imx_media_capture_device_register);