[Bug 699382] v4l2: dmabuf handling is not complete

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=699382
  GStreamer | gst-plugins-good | git

--- Comment #35 from Michael Olbrich <m.olbrich at pengutronix.de> 2014-11-25 11:34:48 UTC ---
With current kernels we could probably call EXPBUF before REQBUFS. We should
get ENOTTY if it's not supported and EINVAL otherwise. I'm not sure how older
kernels would handle this though.

But I think it would be better if we talk to the kernel guys. Maybe we can get
a flag for this.

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