[Intel-gfx] [RFC 2/3] drm/i915: Extend I915_PARAMS_FOR_EACH with default member value

[Chris Wilson]

Quoting Michal Wajdeczko (2017-09-22 15:27:25)
> By combining default value into helper macro we can initialize
> modparams struct in the same automatic way as it was declared.
> This will initialize members in the same order as declared
> and additionally will disallow declaring new member without
> proper default value for it.
> 
> Signed-off-by: Michal Wajdeczko <michal.wajdeczko at intel.com>
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>

Overall, I think this is a positive change. I'm not completely happy
that the param() macro is more readable than the struct assignment, but
that is offset by the reduction in duplication.

Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris