diff mbox series

[v2,15/77] media: imx: capture: Register the video device after completing init

Message ID 20210215042741.28850-16-laurent.pinchart@ideasonboard.com
State Accepted
Commit 1f4e7241704baa2f9c52627439a32a92625e1f06
Headers show
Series [v2,01/77] media: imx: Drop dependency on I2C | expand

Commit Message

Laurent Pinchart Feb. 15, 2021, 4:26 a.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>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.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 78b6e592692f..cd0ad2b32bbf 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);