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Eric Anholt authored
If a CMA allocation failed, the partially constructed BO would be
unreferenced through the normal path, and we might choose to put it in
the BO cache.  If we then reused it before it expired from the cache,
the kernel would OOPS.

Signed-off-by: default avatarEric Anholt <eric@anholt.net>
Fixes: c826a6e1 ("drm/vc4: Add a BO cache.")
Reviewed-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170301185602.6873-2-eric@anholt.net
ca39b449
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