drm/i915: Split alloc from init for lrc ...wrapping of do_switch_context (Daniel Vetter) (Daniel Vetter) ...nnecessary init flag & ring type test. (Daniel Vetter) Improve commit message (Daniel Vetter) Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>