>The bug is around VIDIC_QBUF (FIF buffer queuing)/VIDIC_DQBUF (FIF
>buffer dequeuing).
>I don't know when to change the state of frames (frame->grabstate), and
>usbvision->curFrameNum too, and I think this is what breaks the code.
>I did not touch the decompression algorithm so this may not the problem.
>For the controls, I send the request to the I2C clients directly without
>controling the range.
I did confirm that the decompression is running when a device is used. So I think your right about
VIDIC_QBUF needs some love.

>I have no such error messages and I have a saa7113 decoder. Fortunately
>the saa7115 configures the decoder with default values. Another bug to
>find
Looks like it's just the range and values of the controls. Not a big issue.
Dwaine