Re: [PATCH v3][RFC] add raw video stream support for Samsung SUR40

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