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yaml --- r: 192954 b: refs/heads/master c: dd1ad94 h: refs/heads/master v: v3
git-mirror · May 19, 2010 · df10f76 · df10f76
1 parent d7f7d30
commit df10f76
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Showing 2 changed files with 6 additions and 7 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 626e2acfdce76b5a6a1daa4bc8ef556d507f5941
+refs/heads/master: dd1ad942ac0b1bb7f72f9f3d822ec937aa07dc4d
diff --git a/trunk/Documentation/video4linux/v4l2-framework.txt b/trunk/Documentation/video4linux/v4l2-framework.txt
@@ -545,12 +545,11 @@ unregister them:
 This will remove the device nodes from sysfs (causing udev to remove them
 from /dev).
 
-After video_unregister_device() returns no new opens can be done.
-
-However, in the case of USB devices some application might still have one
-of these device nodes open. You should block all new accesses to read,
-write, poll, etc. except possibly for certain ioctl operations like
-queueing buffers.
+After video_unregister_device() returns no new opens can be done. However,
+in the case of USB devices some application might still have one of these
+device nodes open. So after the unregister all file operations will return
+an error as well, except for the ioctl and unlocked_ioctl file operations:
+those will still be passed on since some buffer ioctls may still be needed.
 
 When the last user of the video device node exits, then the vdev->release()
 callback is called and you can do the final cleanup there.