The output from VIDIOC_LOG_STATUS should be bracketed by a 'START STATUS' and
'END STATUS' line to clearly group the status report in the kernel log and to
make it possible for a tool like v4l2-ctl to easily find and show the status
output.
Often this was forgotten, so this is now done automatically as long as drivers
use the v4l2_device struct.
It was also added for the subdev nodes.
A new helper function was also added for drivers that just want to log the
current control values in the log.
Regards,
Hans
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