Question about bttv and V4L2_MEMORY_USEPTR

[Paco Camberos <pacocamberos@xxxxxxxxxxx>]

Hello,
I am using "SUSE Linux Enterprise Server 10 SP2 (i586)" with kernel 2.6.16.60-0.21-bigsmp and have one capture card:
 
* v4l2 device:  "/dev/video0"   module                  : "bttv"   card                    : "BT878 video (AVerMedia TVPhone "
 
   NOTE: The "bttv" module uses the "video_buf" module too.
My problem:
  I am unable to execute the V4l2 example program http://v4l2spec.bytesex.org/v4l2spec/capture.c using "application allocated buffer" (V4L2_MEMORY_USERPTR):
 
 # ./capture -u -d /dev/video0 VIDIOC_QBUF error 12, Cannot allocate memory
 
  NOTE: V4L2_MEMORY_MMAP or V4L2_MEMORY_READ run OK.
Question:  Does "bttv" module support "application allocated buffer" (V4L2_MEMORY_USERPTR)? Or may it be a bug into the "video_buf" module?
Thanks a lot,
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