Re: [PATCH] drm/i915: Remove unreachable code

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On Fri, Jan 29, 2021 at 08:55:54PM +0000, Chris Wilson wrote:
> Quoting Vinicius Tinti (2021-01-29 18:15:19)
> > By enabling -Wunreachable-code-aggressive on Clang the following code
> > paths are unreachable.
> 
> That code exists as commentary and, especially for sdvo, library
> functions that we may need in future.

I would argue that this code could be removed since it is in git history.
It can be restored when needed.

This will make the code cleaner.

> The ivb-gt1 case => as we now set the gt level for ivb, should we not
> enable the optimisation for ivb unaffected by the w/a? Just no one has
> taken the time to see if it causes a regression.

I don't know. I just found out that the code is unreachable.

> For error state, the question remains whether we should revert to
> uncompressed data if the compressed stream is larger than the original.

I don't know too.

In this last two cases the code could be commented and the decisions
and problems explained in the comment section.

> -Chris
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