Currently, MEDIA_IOC_G_TOPOLOGY ioctl on cedrus fails due to incorrect
initialization order. Fix that by moving video_register_device() before
v4l2_m2m_register_media_controller() and while at it, fix error path.
Reported-by: Jonas Karlman <jo...@kwiboo.se>
Signed-off-by: Jernej Skrabec <jernej.skra...@siol.net>
---
drivers/staging/media/sunxi/cedrus/cedrus.c | 24 ++++++++++-----------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus.c
b/drivers/staging/media/sunxi/cedrus/cedrus.c
index b98add3cdedd..d0429c0e6b6b 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus.c
@@ -300,7 +300,7 @@ static int cedrus_probe(struct platform_device *pdev)
"Failed to initialize V4L2 M2M device\n");
ret = PTR_ERR(dev->m2m_dev);
- goto err_video;
+ goto err_v4l2;
}
dev->mdev.dev = &pdev->dev;
@@ -310,23 +310,23 @@ static int cedrus_probe(struct platform_device *pdev)
dev->mdev.ops = &cedrus_m2m_media_ops;
dev->v4l2_dev.mdev = &dev->mdev;
- ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd,
-
MEDIA_ENT_F_PROC_VIDEO_DECODER);
- if (ret) {
- v4l2_err(&dev->v4l2_dev,
- "Failed to initialize V4L2 M2M media controller\n");
- goto err_m2m;
- }
-
ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
- goto err_v4l2;
+ goto err_m2m;
}
v4l2_info(&dev->v4l2_dev,
"Device registered as /dev/video%d\n", vfd->num);
+ ret = v4l2_m2m_register_media_controller(dev->m2m_dev, vfd,
+
MEDIA_ENT_F_PROC_VIDEO_DECODER);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev,
+ "Failed to initialize V4L2 M2M media controller\n");
+ goto err_video;
+ }
+
ret = media_device_register(&dev->mdev);
if (ret) {
v4l2_err(&dev->v4l2_dev, "Failed to register media device\n");
@@ -339,10 +339,10 @@ static int cedrus_probe(struct platform_device *pdev)
err_m2m_mc:
v4l2_m2m_unregister_media_controller(dev->m2m_dev);
-err_m2m:
- v4l2_m2m_release(dev->m2m_dev);
err_video:
video_unregister_device(&dev->vfd);
+err_m2m:
+ v4l2_m2m_release(dev->m2m_dev);
err_v4l2:
v4l2_device_unregister(&dev->v4l2_dev);
--
2.21.0
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