On 02/11/2015 12:52 PM, Florian Echtler wrote:
> Hello again,
>
> does anyone have any suggestions why USERPTR still fails with dma-sg?
>
> Could I just disable the corresponding capability for the moment so that
> the patch could perhaps be merged, and investigate this separately?
I prefer to dig into this a little bit more, as I don't really understand
it. Set the videobuf2-core debug level to 1 and see what the warnings are.
Since 'buf.qbuf' fails in v4l2-compliance, it's something in the VIDIOC_QBUF
sequence that returns an error, so you need to pinpoint that.
If push comes to shove I can also merge the patch without USERPTR support,
but I really prefer not to do that.
Regards,
Hans
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