I915_TILING_LAST 127 drivers/gpu/drm/i915/gem/i915_gem_tiling.c if (tiling > I915_TILING_LAST) I915_TILING_LAST 211 drivers/gpu/drm/i915/gem/i915_gem_tiling.c BUILD_BUG_ON(I915_TILING_LAST & STRIDE_MASK);