drm/i915: Compile-time concatenate WARN_ON macro strings
Using __stringify(x) instead of #x adds support for macros as a parameter and compile-time concatenation reduces the runtime overhead. Slightly increases the .text size but should not matter. v2: - Define I915_STATE_WARN_ON though I915_STATE_WARN (Bikeshed inspiration by Chris) v3: - More specific commit message v4: - Do not directly pass arbitary string as format, instead guard with "%s" (Dave) Cc: Rob Clark <robdclark@gmail.com> Cc: Dave Gordon <david.s.gordon@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> (v3) Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1450441647-23924-3-git-send-email-joonas.lahtinen@linux.intel.comSigned-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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