drm/i915: Remove kmap/kunmap wrappers
As these are now both plain and simple kmap_atomic/kunmap_atomic pairs, we can remove the wrappers for a small gain of clarity (in particular, not hiding the atomic critical sections!). Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Reviewed-by: NMatthew Auld <matthew.auld@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170215084357.19977-7-chris@chris-wilson.co.uk
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