Re: [RFC 14/15] drm/i915: Use new IS_GEN range helpers

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Quoting Tvrtko Ursulin (2018-02-08 14:34:38)
> 
> On 08/02/2018 14:22, Ville Syrjälä wrote:
> > On Thu, Feb 08, 2018 at 01:06:05PM +0000, Tvrtko Ursulin wrote:
> >> From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
> >>
> >> Coccinelle transformation:
> >>
> >>   @@
> >>   expression p, g;
> >>   @@
> >>   (
> >>   -INTEL_GEN(p) > g
> >>   +IS_GEN_GT(p, g)
> > 
> > I think this stuff makes the code pretty close to illegible.
> > In this particular case even more so because "GT" actually
> > means something very different to us.
> 
> Oh how true! And I did not realize it at all while writing it! :)
> 
> Anyway, something like this, regardless of a name, is needed if people 
> want this to be effective. Since the checks have to be moved to known at 
> compile time. Or a completely different approach will be needed.

IS_GEN_RANGE() doesn't cut it?

I think that people find it inconvenient to use, so some sugar is still
required.
-Chris
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