drm/cma: Fix recent regression of mmap() in the MMU case.
The stub get_unmapped_area() function was actually getting called, so all of our mmap()s failed. Cc: Yannick Fertre <yannick.fertre@st.com> Fixes: 97bf3a9a ("drm/cma: Update DEFINE_DRM_GEM_CMA_FOPS to add get_unmapped_area") Signed-off-by: Eric Anholt <eric@anholt.net> Link: http://patchwork.freedesktop.org/patch/msgid/20170417233124.18420-1-eric@anholt.netReviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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