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Several people have reported seeing errors in the
messages file along the lines Ivtv OSD: DMA xfer from … of … bytes
failed with (-512) … As long as the number in the brackets is (-512) this
is harmless and we should probably stop this being an error in that case. Basically the code is waiting for a vsync interrupt (I’m
not sure that we should always do this for the prep frame code) and the wait
can be interrupted by a signal. If this happens the code returns -512 and the
call is then restarted by the kernel. So basically this particular error is not an error and
can be ignored. I will prepare a patch over the next few days to
remove the error in this particular case. John |
