Issues #174
支持USB摄像头热插拔
Status:
Feedback
Priority:
Normal
Assignee:
-
Start date:
11/17/2022
Due date:
% Done:
0%
Estimated time:
目标版本:
LKD3568 Android SDK 1.0
Component_fae:
Probability:
High
Seriousness:
Problem Type:
Name:
Tel.:
Description
1)USB camera断开，清除设备节点
android-356x/kernel$ git diff drivers/media/v4l2-core/v4l2-dev.c
diff --git a/kernel/drivers/media/v4l2-core/v4l2-dev.c b/kernel/drivers/media/v4l2-core/v4l2-dev.c
index cc3e9001b0..a75dc5270d 100644
--- a/kernel/drivers/media/v4l2-core/v4l2-dev.c
+++ b/kernel/drivers/media/v4l2-core/v4l2-dev.c
@@ -1040,6 +1040,7 @@ void video_unregister_device(struct video_device *vdev)
*/
clear_bit(V4L2_FL_REGISTERED, &vdev->flags);
mutex_unlock(&videodev_lock);
+ devnode_clear(vdev);
device_unregister(&vdev->dev);
}
EXPORT_SYMBOL(video_unregister_device);
2)usb摄像头注册2个video设备，改为注册一个
android-356x/kernel$ git diff ./drivers/media/usb/uvc/uvc_driver.c
diff --git a/kernel/drivers/media/usb/uvc/uvc_driver.c b/kernel/drivers/media/usb/uvc/uvc_driver.c
index 0842a47c6b..9684dd07f3 100644
--- a/kernel/drivers/media/usb/uvc/uvc_driver.c
+++ b/kernel/drivers/media/usb/uvc/uvc_driver.c
@@ -2069,7 +2069,7 @@ static int uvc_register_terms(struct uvc_device *dev,
/* Register a metadata node, but ignore a possible failure,
* complete registration of video nodes anyway.
*/
- uvc_meta_register(stream);
+ //uvc_meta_register(stream);
term->vdev = &stream->vdev;