diff options
Diffstat (limited to 'drivers/media/platform')
| -rw-r--r-- | drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c index 5e1c25db7bc4..d993c09a4820 100644 --- a/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c +++ b/drivers/media/platform/sunxi/sun8i-a83t-mipi-csi2/sun8i_a83t_mipi_csi2.c @@ -536,6 +536,7 @@ sun8i_a83t_mipi_csi2_bridge_setup(struct sun8i_a83t_mipi_csi2_device *csi2_dev) struct v4l2_async_notifier *notifier = &bridge->notifier; struct media_pad *pads = bridge->pads; struct device *dev = csi2_dev->dev; + bool notifier_registered = false; int ret; mutex_init(&bridge->lock); @@ -573,12 +574,17 @@ sun8i_a83t_mipi_csi2_bridge_setup(struct sun8i_a83t_mipi_csi2_device *csi2_dev) notifier->ops = &sun8i_a83t_mipi_csi2_notifier_ops; ret = sun8i_a83t_mipi_csi2_bridge_source_setup(csi2_dev); - if (ret) + if (ret && ret != -ENODEV) goto error_v4l2_notifier_cleanup; - ret = v4l2_async_subdev_nf_register(subdev, notifier); - if (ret < 0) - goto error_v4l2_notifier_cleanup; + /* Only register the notifier when a sensor is connected. */ + if (ret != -ENODEV) { + ret = v4l2_async_subdev_nf_register(subdev, notifier); + if (ret < 0) + goto error_v4l2_notifier_cleanup; + + notifier_registered = true; + } /* V4L2 Subdev */ @@ -589,7 +595,8 @@ sun8i_a83t_mipi_csi2_bridge_setup(struct sun8i_a83t_mipi_csi2_device *csi2_dev) return 0; error_v4l2_notifier_unregister: - v4l2_async_nf_unregister(notifier); + if (notifier_registered) + v4l2_async_nf_unregister(notifier); error_v4l2_notifier_cleanup: v4l2_async_nf_cleanup(notifier); |