X-Window driver displaylink_drv.so need help

[Jason Wu]

I have bought displaylink device and downloaded displaylink driver for
x-window
now it can be compiled and working ok,

Now i am trying to use another video device dongle hardware,
and try to modified displaylink driver to fit it,
the only different is, that USB-Video-dongle, doesn't have as much RAM as
displaylink device,
so the output goes black out, if x-window not keep output frame.
the output frame x-window keeps pumping out, goes thru function
"deferred_io"

Question is,
How do i modify displaylink.c so i can keep getting data output pumping
from x-window
doesn't matter my mouse or keyboard or any other input is triggering.
i just need it keeps output data to driver.

Can anybody help?
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.x.org/archives/xorg/attachments/20120326/ad86039a/attachment.html>