Re: [PATCH] drm/i915: make GEM_WARN_ON less terrible

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Quoting Matthew Auld (2018-03-19 18:08:54)
> GEM_WARN_ON() was originally intended to be used only as:
> 
>    if (GEM_WARN_ON(expr))
>         ...
> 
> but it just so happens to also work as simply:
> 
>    GEM_WARN_ON(expr);
> 
> since it just wraps WARN_ON, which is a little misleading since for
> !DRM_I915_DEBUG_GEM builds the second case will actually break the
> build. Given that there are some patches floating around which seem to
> miss this, it probably makes sense to just make it work for both cases.

That really was quite intentional. The only time to use GEM_WARN_ON() is
inside an if, otherwise what's the point?
-Chris
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