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-rw-r--r--Documentation/video4linux/v4l2-framework.txt9
1 files changed, 6 insertions, 3 deletions
diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt
index 38d054aa0e0..3b483c1e012 100644
--- a/Documentation/video4linux/v4l2-framework.txt
+++ b/Documentation/video4linux/v4l2-framework.txt
@@ -392,13 +392,16 @@ You should also set these fields:
- v4l2_dev: set to the v4l2_device parent device.
- name: set to something descriptive and unique.
-- fops: set to the file_operations struct.
+- fops: set to the v4l2_file_operations struct.
- ioctl_ops: if you use the v4l2_ioctl_ops to simplify ioctl maintenance
(highly recommended to use this and it might become compulsory in the
future!), then set this to your v4l2_ioctl_ops struct.
-If you use v4l2_ioctl_ops, then you should set .unlocked_ioctl to
-__video_ioctl2 or .ioctl to video_ioctl2 in your file_operations struct.
+If you use v4l2_ioctl_ops, then you should set either .unlocked_ioctl or
+.ioctl to video_ioctl2 in your v4l2_file_operations struct.
+
+The v4l2_file_operations struct is a subset of file_operations. The main
+difference is that the inode argument is omitted since it is never used.
video_device registration