X-Window driver displaylink_drv.so need help

[Jason Wu <jason.wu@xxxxxxxxxxxxxxx>]

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?

_______________________________________________
xorg@xxxxxxxxxxx: X.Org support
Archives: http://lists.freedesktop.org/archives/xorg
Info: http://lists.x.org/mailman/listinfo/xorg
Your subscription address: list-xorg@xxxxxxxxxxx