23.06.2010 15:43, Steven Toth kirjoitti:
Now, on each video interrupt, I know which SG list i need to read
from. At this stage i do need to copy the
buffers associated with each of the SG lists at once. In this
scenario, I don't see how videobuf could be used,
while I keep getting this feeling that a simple copy_to_user of the
entire buffer could do the whole job in a
better way, since the buffers themselves are already managed and
initialized already. Am I correct in thinking
so, or is it that I am overlooking something ?

How to activate DMA transfers only if there is empty space for the DMA transfer?



SAA7164 suffers from this. If you find a solution I'd love to hear it.


- Steve

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