1) In compat_drm_agp_info(), seems like it should be info64to32.
2) In compat_drm_getstats(), the assignments in the loop are inverted, it's
st32 which should be set to the values of st64, not the other way around.
3) In compat_drm_dma(), again inverted 32<->64, and there is no copyout (?).
4) In compat_drm_agp_enable(), m64 is uninitialized, everything is wrong in
this function it seems.