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The compat callback was missing and triggered failures in 32bits userspace when enabling/disable the perf stream. We don't require any particular processing here as these ioctls don't take any argument. Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Fixes:eec688e142("drm/i915: Add i915 perf infrastructure") Cc: linux-stable <stable@vger.kernel.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20171024152728.4873-1-lionel.g.landwerlin@intel.com (cherry picked from commit191f896085) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>